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Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Evaluation of agricultural residues for paper manufacture  

SciTech Connect (OSTI)

Five agricultural residues-olive tree fellings, wheat straw, sunflower stalks, vine shoots, and cotton stalks-were evaluated for use as raw materials for paper manufacture. The untreated raw materials and their pulps were tested for hot-water solubles, 1%-NaOH solubles, alcohol-benzene extractables, ash, holocellulose, lignin, [alpha]-cellulose, and pentosans. Handsheets were tested for breaking length, stretch, burst index, and tear index. The results showed wheat straw to be the most promising material. Vine shoots showed the least promise.

Alcaide, L.J.; Baldovin, F.L.; Herranz, J.L.F. (Univ. of Cordoba (Spain))

1993-03-01T23:59:59.000Z

2

Modeling Sustainable Agricultural Residue Removal at the Subfield Scale  

SciTech Connect (OSTI)

This study developed a computational strategy that utilizes data inputs from multiple spatial scales to investigate how variability within individual fields can impact sustainable residue removal for bioenergy production. Sustainable use of agricultural residues for bioenergy production requires consideration of the important role that residues play in limiting soil erosion and maintaining soil C, health, and productivity. Increased availability of subfield-scale data sets such as grain yield data, high-fidelity digital elevation models, and soil characteristic data provides an opportunity to investigate the impacts of subfield-scale variability on sustainable agricultural residue removal. Using three representative fields in Iowa, this study contrasted the results of current NRCS conservation management planning analysis with subfield-scale analysis for rake-and-bale removal of agricultural residue. The results of the comparison show that the field-average assumptions used in NRCS conservation management planning may lead to unsustainable residue removal decisions for significant portions of some fields. This highlights the need for additional research on subfield-scale sustainable agricultural residue removal including the development of real-time variable removal technologies for agricultural residue.

Muth, D.J.; McCorkle, D.S.; Koch, J.B.; Bryden, K.M.

2012-05-02T23:59:59.000Z

3

E-Print Network 3.0 - agricultural residues Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Use in the United States Summary: , livestock commodities, agricultural residues, and bioenergy crops. Drawing on ORNL and APAC county... , developed and maintained at the...

4

residual magnetism  

Science Journals Connector (OSTI)

The magnetization, i.e., the magnetic polarization, that remains in a magnetized material after all attempts to remove the magnetization have been made. Note: An example of residual magnetization is the magnetiza...

2001-01-01T23:59:59.000Z

5

Using a Decision Support System to Optimize Production of Agricultural Crop Residue Biofeedstock  

SciTech Connect (OSTI)

For several years the Idaho National Laboratory (INL) has been developing a Decision Support System for Agriculture (DSS4Ag) which determines the economically optimum recipe of various fertilizers to apply at each site in a field to produce a crop, based on the existing soil fertility at each site, as well as historic production information and current prices of fertilizers and the forecast market price of the crop at harvest, for growing a crop such as wheat, potatoes, corn, or cotton. In support of the growing interest in agricultural crop residues as a bioenergy feedstock, we have extended the capability of the DSS4Ag to develop a variable-rate fertilizer recipe for the simultaneous economically optimum production of both grain and straw, and have been conducting field research to test this new DSS4Ag. In this paper we report the results of two years of field research testing and enhancing the DSS4Ag’s ability to economically optimize the fertilization for the simultaneous production of both grain and its straw, where the straw is an agricultural crop residue that can be used as a biofeedstock.

Reed L. Hoskinson; Ronald C. Rope; Raymond K. Fink

2007-04-01T23:59:59.000Z

6

Charcoal from agricultural residues as alternative reducing agent in metal recycling  

Science Journals Connector (OSTI)

Typical carbonization units have the target to produce a charcoal which is in nearly all cases used as energy carrier for the production of heat in different forms. These often very old and not efficient processes are in most cases operated at temperatures between 350 and 500 °C and generate a charcoal with only medium quality. To realize an application of charcoals as CO2-neutral reducing agent in metallurgical processes special high quality charcoals are needed, which meet metallurgical requirements - fixed carbon content of more than 85%, low ash amount and low content of volatiles. Therefore carbonization processes at higher temperature are required. The performed carbonization experiments with agricultural residues at temperatures up to 1000 °C show the possibility of the production of a charcoal which meets the requirements of various metallurgical processes and can act in these industry sector as reducing agent and substitute the so far used fossil coals and cokes. This was realized with some first reduction tests of heavy metal containing residues where charcoals showed a better performance than petroleum coke typically used in such reduction processes. The charcoal application in metal production and recycling processes as substitute of fossil carbon carriers leads to an enormous potential of saved fossil based CO2-emissions because of the high energy and reducing agent demands in these industry sector. So the metal industry has the opportunity to fulfill environmental regulations and restrictions to reduce their CO2-footprint and guarantee the supply of metals in Central Europe in future.

Thomas Griessacher; Jürgen Antrekowitsch; Stefan Steinlechner

2012-01-01T23:59:59.000Z

7

Results with a bench scale downdraft biomass gasifier for agricultural and forestry residues  

Science Journals Connector (OSTI)

A small scale fixed bed downdraft gasifier system to be fed with agricultural and forestry residues has been designed and constructed. The downdraft gasifier has four consecutive reaction zones from the top to the bottom, namely drying, pyrolysis, oxidation and reduction zones. Both the biomass fuel and the gases move in the same direction. A throat has been incorporated into the design to achieve gasification with lower tar production. The experimental system consists of the downdraft gasifier and the gas cleaning unit made up by a cyclone, a scrubber and a filter box. A pilot burner is utilized for initial ignition of the biomass fuel. The product gases are combusted in the flare built up as part of the gasification system. The gasification medium is air. The air to fuel ratio is adjusted to produce a gas with acceptably high heating value and low pollutants. Within this frame, different types of biomass, namely wood chips, barks, olive pomace and hazelnut shells are to be processed. The developed downdraft gasifier appears to handle the investigated biomass sources in a technically and environmentally feasible manner. This paper summarizes selected design related issues along with the results obtained with wood chips and hazelnut shells.

Hayati Olgun; Sibel Ozdogan; Guzide Yinesor

2011-01-01T23:59:59.000Z

8

Anaerobic fermentation of agricultural residue: potential for improvement and implementation. Final report, Volume II  

SciTech Connect (OSTI)

Earlier studies have shown that although large quantities of agricultural residues are generated on small farms, it was difficult to economically justify use of conventional anaerobic digestion technology, such as used for sewage sludge digestion. A simple, unmixed, earthen-supported structure appeared to be capable of producing significant quantities of biogas at a cost that would make it competitive with many existing fuels. The goal of this study was to define and demonstrate a methane fermentation technology that could be practical and economically feasible on small farms. This study provides the first long term, large scale (reactor volumes of 34 m/sup 3/) parallel testing of the major theory, design, construction, and operation of a low cost approach to animal manure fermentation as compared to the more costly and complex designs. The main objectives were to define the lower limits for successful fermentor operation in terms of mixing, insulation, temperature, feed rate, and management requirements in a cold climate with both pilot scale and full scale fermentors. Over a period of four years, innovative fermentation processes for animal manures were developed from theoretical concept to successful full scale demonstration. Reactors were sized for 50 to 65 dairy animals, or for the one-family dairy size. The results show that a small farm biogas generation system that should be widely applicable and economically feasible was operated successfully for nearly two years. Although this low cost system out-performed the completely mixed unit throughout the study, perhaps the greatest advantage of this approach is its ease of modification, operation, and maintenance.

Jewell, W. J.; Dell'orto, S.; Fanfoni, K. J.; Hayes, T. D.; Leuschner, A. P.; Sherman, D. F.

1980-04-01T23:59:59.000Z

9

15th International Conference Ramiran, May 3-6, 2013, Versailles Assessing fertilising practices with organic residues in agriculture: a life  

E-Print Network [OSTI]

with organic residues in agriculture: a life cycle assessment perspective Pradel Marilys1* (1) Irstea, UR TSCF A large part of the environmental impacts in agriculture are due to the emissions of chemicals, eutrophication and global warming). In this paper, we achieve a LCA study for 45 sewage sludge spreading

Paris-Sud XI, Université de

10

Materials - Recycling - Shredder Residue  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Recovering Materials from Shredder Residue Recovering Materials from Shredder Residue Obsolete automobiles, home appliances and other metal-containing scrap are shredded for the recovery of metals. More than 50% of the material shredded is automobiles. In the United States, shredders generate about 5 million tons of shredder residue every year. Similar amounts are produced in Europe and in the Pacific Rim. Because recycling shredder waste has not been profitable, most of it ends up in landfills; smaller amounts are incinerated. Argonne researchers have developed and tested a process to recover polymers and metals from shredder residue. A 2-ton/hr pilot plant, consisting of a mechanical separation facility and a six-stage wet density/froth flotation plant, was built at Argonne. In the mechanical part of the plant, the shredder waste was separated into five primary components: a polymer fraction (about 45% by weight), a residual metals concentrate (about 10% by weight), a polyurethane foam portion (about 5% by weight), an organic-rich fraction (about 25% by weight) and a metal oxides fraction (about 15% by weight). The polymer fraction was then separated further in the wet density/froth flotation system to recover individual plastic types or compatible families of polymers.

11

Assessment of secondary crop residues. Final report  

SciTech Connect (OSTI)

This report is the first of three reports assessing the feasibility of converting secondary agricultural residues to energy in the form of either methane gas or ethyl alcohol. Secondary agricultural residues are defined in this study as those residues resulting from biomass processing to produce primary products; e.g., whey from cheese processing, vegetable processing wastes, residues from paper pulping, etc. This report summarizes the first two phases of this study, data compilation, and evaluation. Subsequent reports will analyze the technical and economic feasibility of converting these residues to energy and the implementability of this technology. The industries for which data has been compiled in this report include vegetable, fruit, seafood, meat, poultry, and dairy processing and the pulp, paper, and paperboard industry. The data collected include raw product input, final processed product output, residue types, and quantity, residue concentration, biodegradability, seasonality of production, and geographic distribution of processing facilities. In general, these industries produce a relatively solid residue ranging in total solids concentration from 10 to 50% and a dilute liquid residue with an organic content (measured as COD or BOD) ranging from a few hundred to a few thousand mg/l. Due to the significant quantities of residues generated in each of the industries, it appears that the potential exists for generating a substantial quantity of energy. For a particular industry this quantity of energy can range from only one percent upwards to nearly thirty-five percent of the total processing energy required. The total processing energy required for the industries included in this study is approximately 2.5 quads per year. The potential energy which can be generated from these industrial residues will be 0.05 to 0.10 quads per year or approximately 2 to 4 percent of the total demand.

Ashare, E.; Leuschner, A.P.; West, C.E.; Langton, B.

1981-03-01T23:59:59.000Z

12

Hanford Tank Waste Residuals  

Broader source: Energy.gov (indexed) [DOE]

Hanford Hanford Tank Waste Residuals DOE HLW Corporate Board November 6, 2008 Chris Kemp, DOE ORP Bill Hewitt, YAHSGS LLC Hanford Tanks & Tank Waste * Single-Shell Tanks (SSTs) - ~27 million gallons of waste* - 149 SSTs located in 12 SST Farms - Grouped into 7 Waste Management Areas (WMAs) for RCRA closure purposes: 200 West Area S/SX T TX/TY U 200 East Area A/AX B/BX/BY C * Double-Shell Tanks (DSTs) - ~26 million gallons of waste* - 28 DSTs located in 6 DST Farms (1 West/5 East) * 17 Misc Underground Storage Tanks (MUST) * 43 Inactive MUST (IMUST) 200 East Area A/AX B/BX/BY C * Volumes fluctuate as SST retrievals and 242-A Evaporator runs occur. Major Regulatory Drivers * Radioactive Tank Waste Materials - Atomic Energy Act - DOE M 435.1-1, Ch II, HLW - Other DOE Orders * Hazardous/Dangerous Tank Wastes - Hanford Federal Facility Agreement and Consent Order (TPA) - Retrieval/Closure under State's implementation

13

Essential Substrate Residues for Action of Endopeptidases  

Science Journals Connector (OSTI)

Endopeptidases, which are influenced in their specificity primarily by basic residues of arginine or lysine are treated in seven sections, according to the position of the essential residue: ...

Prof. Dr. Borivoj Keil

1992-01-01T23:59:59.000Z

14

DISSOLUTION OF NEPTUNIUM OXIDE RESIDUES  

SciTech Connect (OSTI)

This report describes the development of a dissolution flowsheet for neptunium (Np) oxide (NpO{sub 2}) residues (i.e., various NpO{sub 2} sources, HB-Line glovebox sweepings, and Savannah River National Laboratory (SRNL) thermogravimetric analysis samples). Samples of each type of materials proposed for processing were dissolved in a closed laboratory apparatus and the rate and total quantity of off-gas were measured. Samples of the off-gas were also analyzed. The quantity and type of solids remaining (when visible) were determined after post-dissolution filtration of the solution. Recommended conditions for dissolution of the NpO{sub 2} residues are: Solution Matrix and Loading: {approx}50 g Np/L (750 g Np in 15 L of dissolver solution), using 8 M nitric acid (HNO{sub 3}), 0.025 M potassium fluoride (KF) at greater than 100 C for at least 3 hours. Off-gas: Analysis of the off-gas indicated nitric oxide (NO), nitrogen dioxide (NO{sub 2}) and nitrous oxide (N{sub 2}O) as the only identified components. No hydrogen (H{sub 2}) was detected. The molar ratio of off-gas produced per mole of Np dissolved ranged from 0.25 to 0.4 moles of gas per mole of Np dissolved. A peak off-gas rate of {approx}0.1 scfm/kg bulk oxide was observed. Residual Solids: Pure NpO{sub 2} dissolved with little or no residue with the proposed flowsheet but the NpCo and both sweepings samples left visible solid residue after dissolution. For the NpCo and Part II Sweepings samples the residue amounted to {approx}1% of the initial material, but for the Part I Sweepings sample, the residue amounted to {approx}8 % of the initial material. These residues contained primarily aluminum (Al) and silicon (Si) compounds that did not completely dissolve under the flowsheet conditions. The residues from both sweepings samples contained minor amounts of plutonium (Pu) particles. Overall, the undissolved Np and Pu particles in the residues were a very small fraction of the total solids.

Kyser, E

2009-01-12T23:59:59.000Z

15

Residuals, Sludge, and Composting (Maine) | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Residuals, Sludge, and Composting (Maine) Residuals, Sludge, and Composting (Maine) Residuals, Sludge, and Composting (Maine) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Maine Program Type Siting and Permitting Provider Department of Environmental Protection The Maine Department of Environmental Protection's Residuals, Sludge, and Composting program regulates the land application and post-processing of organic wastes, including sewage sludge, septage, food waste, and wood

16

Residual stresses in annealed zircaloy  

SciTech Connect (OSTI)

Neutron diffraction has been used to measure the lattice constants of single crystal and rod-textured polycrystalline Zircaloy-2 in the temperature range 300-900 K. While the single crystal remains strain-free during heating or cooling, large residual grain-interaction strains occur in the polycrystalline sample as the result of compatibility being maintained among grains with anisotropic thermal expansion coefficients. These residual thermal strains have been determined as a function of temperature from the difference between the single and polycrystal lattice constants. Analysis of the data has been done using a polycrystalline deformation model, QUEST, which accounts for anisotropic elasticity, plasticity and thermal expansion, and for crystallographic texture of the sample. It is found that slow cooling from 900 K introduces residual stresses of the order of 100 MPa in the polycrystalline sample. The calculations demonstrate that these residual stresses can explain not only the difference in the proportional limits in tension and compression (strength differential) but also differences in the initial work hardening behaviour when Zircaloy-2 is deformed in tension or compression.

Tome, C.; Faber, J.; MacEwen, S.R.

1989-03-01T23:59:59.000Z

17

Evaluation of residue drum storage safety risks  

SciTech Connect (OSTI)

A study was conducted to determine if any potential safety problems exist in the residue drum backlog at the Rocky Flats Plant. Plutonium residues stored in 55-gallon drums were packaged for short-term storage until the residues could be processed for plutonium recovery. These residues have now been determined by the Department of Energy to be waste materials, and the residues will remain in storage until plans for disposal of the material can be developed. The packaging configurations which were safe for short-term storage may not be safe for long-term storage. Interviews with Rocky Flats personnel involved with packaging the residues reveal that more than one packaging configuration was used for some of the residues. A tabulation of packaging configurations was developed based on the information obtained from the interviews. A number of potential safety problems were identified during this study, including hydrogen generation from some residues and residue packaging materials, contamination containment loss, metal residue packaging container corrosion, and pyrophoric plutonium compound formation. Risk factors were developed for evaluating the risk potential of the various residue categories, and the residues in storage at Rocky Flats were ranked by risk potential. Preliminary drum head space gas sampling studies have demonstrated the potential for formation of flammable hydrogen-oxygen mixtures in some residue drums.

Conner, W.V.

1994-06-17T23:59:59.000Z

18

Residue management at Rocky Flats  

SciTech Connect (OSTI)

Past plutonium production and manufacturing operations conducted at the Rocky Flats Environmental Technology Site (RFETS) produced a variety of plutonium-contaminated by-product materials. Residues are a category of these materials and were categorized as {open_quotes}materials in-process{close_quotes} to be recovered due to their inherent plutonium concentrations. In 1989 all RFETS plutonium production and manufacturing operations were curtailed. This report describes the management of plutonium bearing liquid and solid wastes.

Olencz, J.

1995-12-31T23:59:59.000Z

19

Transforms for prediction residuals in video coding  

E-Print Network [OSTI]

Typically the same transform, the 2-D Discrete Cosine Transform (DCT), is used to compress both image intensities in image coding and prediction residuals in video coding. Major prediction residuals include the motion ...

Kam??l?, Fatih

2010-01-01T23:59:59.000Z

20

Process to recycle shredder residue  

DOE Patents [OSTI]

A system and process for recycling shredder residue, in which separating any polyurethane foam materials are first separated. Then separate a fines fraction of less than about 1/4 inch leaving a plastics-rich fraction. Thereafter, the plastics rich fraction is sequentially contacted with a series of solvents beginning with one or more of hexane or an alcohol to remove automotive fluids; acetone to remove ABS; one or more of EDC, THF or a ketone having a boiling point of not greater than about 125.degree. C. to remove PVC; and one or more of xylene or toluene to remove polypropylene and polyethylene. The solvents are recovered and recycled.

Jody, Bassam J. (Chicago, IL); Daniels, Edward J. (Oak Lawn, IL); Bonsignore, Patrick V. (Channahon, IL)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Savannah River Tank Waste Residuals  

Broader source: Energy.gov (indexed) [DOE]

Savannah Savannah River Savannah River Tank Waste Residuals HLW Corporate Board November 6, 2008 1 November 6, 2008 Presentation By Sherri R. Ross Department of Energy Savannah River Operations Office The Issue * How clean is clean? * Ultimate Challenge - Justify highly radioactive radionuclides have been removed to the maximum extent practical? 2 removed to the maximum extent practical? - Building compelling regulatory documentation that will withstand intense scrutiny §3116 Requirements 1. Does not require disposal in deep geological repository 2. Highly radioactive radionuclides removed to the maximum extent practical 3. Meet the performance objectives in 10 CFR Part 3 3. Meet the performance objectives in 10 CFR Part 61, Subpart C 4. Waste disposed pursuant to a State-approved closure plan or permit Note: If it is anticipated that Class C disposal limits will be exceeded, additional

22

Residual stress patterns in steel welds  

SciTech Connect (OSTI)

Neutron strain scanning of residual stress is a valuable nondestructive tool for evaluation of residual stress in welds. The penetrating characteristic of neutrons permits mapping of strain patterns with a spatial resolution approaching 1mm at depths of 20mm in steels. While the overall patterns of the residual stress tensor in a weld are understood, the detailed patterns depend on welding process parameters and the effects of solid state transformation. The residual strain profiles in two multi-pass austenitic welds and a ferritic steel weld are presented. The stress-free lattice parameters within the fusion zone and the adjacent heat affected zone in the two austenitic welds show that the interpretation of residual stress from strains are affected by welding parameters. An interpretation of the residual strain pattern in the ferritic steel plate can be made using the strain measurements of a Gleeble test bar which has undergone the solid state austenite decomposition.

Spooner, S.; Hubbard, C.R.; Wang, X.L.; David, S.A.; Holden, T.M. [Oak Ridge National Lab., TN (United States); Root, J.H.; Swainson, I. [Atomic Energy of Canada Ltd., Chalk River, ON (Canada)

1994-12-31T23:59:59.000Z

23

Residual Toxicities of Insecticides to Cotton Insects.  

E-Print Network [OSTI]

the effects of simulated wind and rain on the residues. Tempera- ture and humidity conditions incident to the holding period were sufficient to destroy most of the residual toxicity of this material. Effect of Simulated Wind Among the chlorinated... hydrocarbon insecticides, there was little difference between the effects of simu- lated wind and rain on residual toxicities. However, it is likely that under field conditions the effects of rain would be more noticeable. Simulated wind was less damaging...

Hightower, B. G.; Gaines, J. C.

1960-01-01T23:59:59.000Z

24

Residual Gas Mobility in Ormen Lange.  

E-Print Network [OSTI]

?? The topic of this report is "Mobility of Residual Gas in Ormen Lange" and it has been prepared as a part of the course… (more)

Undeland, Elisabeth

2012-01-01T23:59:59.000Z

25

,,,"Residual Fuel Oil(b)",,,," Alternative...  

U.S. Energy Information Administration (EIA) Indexed Site

Standard Errors for Table 10.5;" " Unit: Percents." ,,,"Residual Fuel Oil(b)",,,," Alternative Energy Sources(c)" ,,,"Coal Coke" "NAICS"," ","Total","...

26

Methods of separating particulate residue streams  

DOE Patents [OSTI]

A particulate residue separator and a method for separating a particulate residue stream may include an air plenum borne by a harvesting device, and have a first, intake end and a second, exhaust end; first and second particulate residue air streams that are formed by the harvesting device and that travel, at least in part, along the air plenum and in a direction of the second, exhaust end; and a baffle assembly that is located in partially occluding relation relative to the air plenum and that substantially separates the first and second particulate residue air streams.

Hoskinson, Reed L. (Rigby, ID); Kenney, Kevin L. (Idaho Falls, ID); Wright, Christopher T. (Idaho Falls, ID); Hess, J. Richard (Idaho Falls, ID)

2011-04-05T23:59:59.000Z

27

Predicting protein residue–residue contacts using deep networks and boosting  

Science Journals Connector (OSTI)

......structure prediction, protein residue-residue contacts...i.e. homologous proteins with known structure...train large boosted ensembles of DN classifiers achieving...advanced search of the Protein Data Bank filtering...contained fewer than 20% disordered residues (i.e. coordinates......

Jesse Eickholt; Jianlin Cheng

2012-12-01T23:59:59.000Z

28

Seismic Travel-Time Residuals and Plates  

Science Journals Connector (OSTI)

......United States, Canada and Greenland under the auspices of Project Vela Uniform (Long Range Seismic Measurements 1966). Arrival...1 that if we plot residuals on the focal sphere, we are at liberty to ascribe these residuals to source effects, receiver effects......

D. Davies; D. P. McKenzie

1969-09-01T23:59:59.000Z

29

Mapping Residual Structure in Intrinsically Disordered Proteins at Residue Resolution Using Millisecond Hydrogen/Deuterium Exchange and Residue Averaging  

Science Journals Connector (OSTI)

Measurement of residual structure in intrinsically disordered proteins can provide insights into the mechanisms by which such proteins undergo coupled binding and folding. The present ... describes an approach to...

Theodore R. Keppel; David D. Weis

2014-12-01T23:59:59.000Z

30

Predicting residual stresses in gas turbine components  

Science Journals Connector (OSTI)

This article describes work carried out by a major aircraft-engine builder and one of its suppliers to validate the numerical prediction of heat-treatment-induced residual stresses. For verification, the proje...

R. A. Wallis Ph.D.; I. W. Craighead B.Sc. Eng.

1995-10-01T23:59:59.000Z

31

SAR impulse response with residual chirps.  

SciTech Connect (OSTI)

A Linear Frequency-Modulated (LFM) chirp is a function with unit amplitude and quadratic phase characteristic. In a focused Synthetic Aperture Radar (SAR) image, a residual chirp is undesired for targets of interest, as it coarsens the manifested resolution. However, for undesired spurious signals, a residual chirp is often advantageous because it spreads the energy and thereby diminishes its peak value. In either case, a good understanding of the effects of a residual LFM chirp on a SAR Impulse Response (IPR) is required to facilitate system analysis and design. This report presents an analysis of the effects of a residual chirp on the IPR. As reference, there is a rich body of publications on various aspects of LFM chirps. A quick search reveals a plethora of articles, going back to the early 1950s. We mention here purely as trivia one of the earlier analysis papers on this waveform by Klauder, et al.

Doerry, Armin Walter

2009-06-01T23:59:59.000Z

32

Mechanisms of hydrocracking of heavy oil residues  

Science Journals Connector (OSTI)

Based on research data, a technology of low-pressure residual fuel oil hydrocracking with a suspended catalyst has been developed. The process has been refined on a laboratory setup. The reaction kinetics has ...

Kh. I. Abad-zade; F. M. Velieva…

2009-07-01T23:59:59.000Z

33

Residual stress in nanocrystalline nickel tungsten electrodeposits  

E-Print Network [OSTI]

Characterizing the residual stress of thick nanocrystalline electrodeposits poses several unique challenges due to their fine grain structure, thickness distribution, and matte surface. We employ a three-dimensional ...

Ziebell, Tiffany D. (Tiffany Dawn)

2011-01-01T23:59:59.000Z

34

ABSTRACT: Bioenergy Harvesting Technologies to Supply Crop Residues...  

Broader source: Energy.gov (indexed) [DOE]

ABSTRACT: Bioenergy Harvesting Technologies to Supply Crop Residues In a Densified Large Square Bale Format ABSTRACT: Bioenergy Harvesting Technologies to Supply Crop Residues In a...

35

Disposal of Rocky Flats residues as waste  

SciTech Connect (OSTI)

Work is underway at the Rocky Flats Plant to evaluate alternatives for the removal of a large inventory of plutonium-contaminated residues from the plant. One alternative under consideration is to package the residues as transuranic wastes for ultimate shipment to the Waste Isolation Pilot Plant. Current waste acceptance criteria and transportation regulations require that approximately 1000 cubic yards of residues be repackaged to produce over 20,000 cubic yards of WIPP certified waste. The major regulatory drivers leading to this increase in waste volume are the fissile gram equivalent, surface radiation dose rate, and thermal power limits. In the interest of waste minimization, analyses have been conducted to determine, for each residue type, the controlling criterion leading to the volume increase, the impact of relaxing that criterion on subsequent waste volume, and the means by which rules changes may be implemented. The results of this study have identified the most appropriate changes to be proposed in regulatory requirements in order to minimize the costs of disposing of Rocky Flats residues as transuranic wastes.

Dustin, D.F.; Sendelweck, V.S. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant; Rivera, M.A. [Lamb Associates, Inc., Rockville, MD (United States)

1993-03-01T23:59:59.000Z

36

Disposal of Rocky Flats residues as waste  

SciTech Connect (OSTI)

Work is underway at the Rocky Flats Plant to evaluate alternatives for the removal of a large inventory of plutonium-contaminated residues from the plant. One alternative under consideration is to package the residues as transuranic wastes for ultimate shipment to the Waste Isolation Pilot Plant. Current waste acceptance criteria and transportation regulations require that approximately 1000 cubic yards of residues be repackaged to produce over 20,000 cubic yards of WIPP certified waste. The major regulatory drivers leading to this increase in waste volume are the fissile gram equivalent, surface radiation dose rate, and thermal power limits. In the interest of waste minimization, analyses have been conducted to determine, for each residue type, the controlling criterion leading to the volume increase, the impact of relaxing that criterion on subsequent waste volume, and the means by which rules changes may be implemented. The results of this study have identified the most appropriate changes to be proposed in regulatory requirements in order to minimize the costs of disposing of Rocky Flats residues as transuranic wastes.

Dustin, D.F.; Sendelweck, V.S. (EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant); Rivera, M.A. (Lamb Associates, Inc., Rockville, MD (United States))

1993-01-01T23:59:59.000Z

37

DEVELOPMENT OF A SUPPLEMENTAL RESIDUAL CONTAMINATION GUIDELINE  

Office of Legacy Management (LM)

DEVELOPMENT OF A SUPPLEMENTAL RESIDUAL CONTAMINATION GUIDELINE DEVELOPMENT OF A SUPPLEMENTAL RESIDUAL CONTAMINATION GUIDELINE FOR THE NFSS CENTRAL DRAINAGE DITCH DECEMBER 1986 Prepared for UNITED STATES DEPARTMENT OF ENERGY OAK RIDGE OPERATIONS OFFICE Under Contract No. DE-AC05-81OR20722 By Bechtel National, Inc. Oak Ridge, Tennessee Bechtel Job No. 14501 I 1.0 INTRODUCTION AND SUMMARY 1.1 OBJECTIVE AND SCOPE The objective of this report is to describe the methodology used for establishing a supplemental residual contamination guideline for the NFSS vicinity property known as the Central Drainage Ditch (CDD). Supplemental guidelines may exceed authorized guidelines if the resultant dose will not exceed the DOE radiation protection standard of 100 mrem/yr (Ref. 1). This evaluation is based on realistic exposure pathways that were

38

Minimal Residual Disease in Chronic Myeloid Leukemia  

Science Journals Connector (OSTI)

...treatment with chemotherapy. In a hematologic complete remission, we know that a large portion of the leukemic cells remain out of sight. These cells, invisible to the microscopist, are the components of an important clinical problem termed "minimal residual disease." The concept of minimal residual disease... For many years hematologists have used the microscope to identify a complete remission of leukemia after treatment with chemotherapy. In a hematologic complete remission, we know that a large portion of the leukemic cells remain out of sight. These cells, ...

Löwenberg B.

2003-10-09T23:59:59.000Z

39

Chemical Stabilization of Hanford Tank Residual Waste  

SciTech Connect (OSTI)

Three different chemical treatment methods were tested for their ability to stabilize residual waste from Hanford tank C-202 for reducing contaminant release (Tc, Cr, and U in particular). The three treatment methods tested were lime addition [Ca(OH)2], an in-situ Ceramicrete waste form based on chemically bonded phosphate ceramics, and a ferrous iron/goethite treatment. These approaches rely on formation of insoluble forms of the contaminants of concern (lime addition and ceramicrete) and chemical reduction followed by co-precipitation (ferrous iron/goethite incorporation treatment). The results have demonstrated that release of the three most significant mobile contaminants of concern from tank residual wastes can be dramatically reduced after treatment compared to contact with simulated grout porewater without treatment. For uranium, all three treatments methods reduced the leachable uranium concentrations by well over three orders of magnitude. In the case of uranium and technetium, released concentrations were well below their respective MCLs for the wastes tested. For tank C-202 residual waste, chromium release concentrations were above the MCL but were considerably reduced relative to untreated tank waste. This innovative approach has the potential to revolutionize Hanford’s tank retrieval process, by allowing larger volumes of residual waste to be left in tanks while providing an acceptably low level of risk with respect to contaminant release that is protective of the environment and human health. Such an approach could enable DOE to realize significant cost savings through streamlined retrieval and closure operations.

Cantrell, Kirk J.; Um, Wooyong; Williams, Benjamin D.; Bowden, Mark E.; Gartman, Brandy N.; Lukens, Wayne W.; Buck, Edgar C.; Mausolf, Edward J.

2014-03-01T23:59:59.000Z

40

Automatic Methods for Predicting Functionally Important Residues  

E-Print Network [OSTI]

Pazos and Alfonso Valencia* Protein Design Group National Center for Biotechnology, Cantoblanco Madrid of protein families into subfamilies in the search for those positions that could have some functional families, testing the statistical meaning of the Tree-determinant residues predicted by three different

Pazos, Florencio

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Residual Stresses in Weldments by Neutron Diffraction  

E-Print Network [OSTI]

Residual Stresses in Weldments by Neutron Diffraction Shanmukha Rao M, Jon James, Shirley Northover :- The neutron diffraction is determined from Bragg's law. When neutron propagate through crystal sample, Coherent, Incoherent and Absorption Scattering phenomena take place Weld MaterialsPlate materials Stress

Bandara, Arosha

42

Specific Nucleoprotein Residues Affect Influenza Virus Morphology  

Science Journals Connector (OSTI)

...these residues to the crystal structure of NP, we...in the production of spherical virions, as indicated...WSN-AichiM1 virus. (A) Crystal structure of NP highlighting...M1 to form straight or bent elongated ribbons and...filamentous virions to spherical ones. We anticipate...

Kristy M. Bialas; Kendra A. Bussey; Raychel L. Stone; Toru Takimoto

2013-12-11T23:59:59.000Z

43

E-Print Network 3.0 - automotive shredder residue Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

residue Search Powered by Explorit Topic List Advanced Search Sample search results for: automotive shredder residue...

44

E-Print Network 3.0 - automotive shredder residues Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

residues Search Powered by Explorit Topic List Advanced Search Sample search results for: automotive shredder residues...

45

Immobilization of Rocky Flats Graphite Fines Residues  

SciTech Connect (OSTI)

The Savannah River Technology Center (SRTC) is developing an immobilization process for graphite fines residues generated during nuclear materials production activities at the Rocky Flats Environmental Technology Site (Rocky Flats). The continued storage of this material has been identified as an item of concern. The residue was generated during the cleaning of graphite casting molds and potentially contains reactive plutonium metal. The average residue composition is 73 wt percent graphite, 15 wt percent calcium fluoride (CaF2), and 12 wt percent plutonium oxide (PuO2). Approximately 950 kilograms of this material are currently stored at Rocky Flats. The strategy of the immobilization process is to microencapsulate the residue by mixing with a sodium borosilicate (NBS) glass frit and heating at nominally 700 degrees C. The resulting waste form would be sent to the Waste Isolation Pilot Plant (WIPP) for disposal. Since the PuO2 concentration in the residue averages 12 wt percent, the immobilization process was required to meet the intent of safeguards termination criteria by limiting plutonium recoverability based on a test developed by Rocky Flats. The test required a plutonium recovery of less than 4 g/kg of waste form when a sample was leached using a nitric acid/CaF2 dissolution flowsheet. Immobilization experiments were performed using simulated graphite fines with cerium oxide (CeO2) as a surrogate for PuO2 and with actual graphite fines residues. Small-scale surrogate experiments demonstrated that a 4:1 frit to residue ratio was adequate to prevent recovery of greater than 4 g/kg of cerium from simulated waste forms. Additional experiments investigated the impact of varying concentrations of CaF2 and the temperature/heating time cycle on the cerium recovery. Optimal processing conditions developed during these experiments were subsequently demonstrated at full-scale with surrogate materials and on a smaller scale using actual graphite fines.In general, the recovery of cerium from the full-scale waste forms was higher than for smaller scale experiments. The presence of CaF2 also caused a dramatic increase in cerium recovery not seen in the small-scale experiments. However, the results from experiments with actual graphite fines were encouraging. A 4:1 frit to residue ratio, a temperature of 700 degrees C, and a 2 hr heating time produced waste forms with plutonium recoveries of 4 plus/minus 1 g/kg. With an increase in the frit to residue ratio, waste forms fabricated at this scale should meet the Rocky Flats product specification. The scale-up of the waste form fabrication process to nominally 3 kg is expected to require a 5:1 to 6:1 frit to residue ratio and maintaining the waste form centerline temperature at 700 degrees C for 2 hr.

Rudisill, T. S.

1998-11-06T23:59:59.000Z

46

Chapter 8 - Coal Combustion Residue Disposal Options  

Science Journals Connector (OSTI)

Abstract Coal combustion residues (CCRs) are presently regulated as solid waste (Subtitle D) under the Resource Conservation Recovery Act. Such classification promotes beneficial use by end-users i.e. mitigating excessive liability. According to the US Environmental Protection agency (USEPA), about 131 million tons of coal combustion residuals—including 71 million tons of fly ash, 20 million tons of bottom ash and boiler slag, and 40 million tons of flue gas desulfurization (FGD) material—were generated in the US in 2007. Of this, approximately 36% was disposed of in landfills, 21% was disposed of in surface impoundments, 38% was beneficially reused, and 5% was used as minefill. Stringent regulation, as Subtitle C (hazardous waste), would impose a perceived liability upon end-users; greatly reducing beneficial use opportunities. Mandatory use of synthetic liners—would not have prevented dike wall failure and fails to consider inherent engineering characteristics of CCRs.

Richard W. Goodwin

2014-01-01T23:59:59.000Z

47

Thin layer chromatography residue applicator sampler  

DOE Patents [OSTI]

A thin layer chromatograph residue applicator sampler. The residue applicator sampler provides for rapid analysis of samples containing high explosives, chemical warfare, and other analyses of interest under field conditions. This satisfied the need for a field-deployable, small, hand-held, all-in-one device for efficient sampling, sample dissolution, and sample application to an analytical technique. The residue applicator sampler includes a sampling sponge that is resistant to most chemicals and is fastened via a plastic handle in a hermetically sealed tube containing a known amount of solvent. Upon use, the wetted sponge is removed from the sealed tube and used as a swiping device across an environmental sample. The sponge is then replaced in the hermetically sealed tube where the sample remains contained and dissolved in the solvent. A small pipette tip is removably contained in the hermetically sealed tube. The sponge is removed and placed into the pipette tip where a squeezing-out of the dissolved sample from the sponge into the pipette tip results in a droplet captured in a vial for later instrumental analysis, or applied directly to a thin layer chromatography plate for immediate analysis.

Nunes, Peter J. (Danville, CA); Kelly, Fredrick R. (Modesto, CA); Haas, Jeffrey S. (San Ramon, CA); Andresen, Brian D. (Livermore, CA)

2007-07-24T23:59:59.000Z

48

Site clean up of coal gasification residues  

SciTech Connect (OSTI)

The coal gasification plant residues tested in this research consists of various particle sizes of rock, gravel, tar-sand agglomerates, fine sand and soil. Most of the soils particles were tar free. One of the fractions examined contained over 3000 ppM polyaromatic hydrocarbons (PAHs). The residues were subjected to high pressure water jet washing, float and sink tests, and soil washing. Subsequent PAH analyses found less than 1 ppM PAHs in the water jet washing water. Soils washed with pure water lowered PAH concentrations to 276 ppM; the use of surfactants decreased PAHs to 47, 200, and 240 ppM for different test conditions. In the 47 ppM test, the surfactant temperature had been increased to 80 C, suggesting that surfactant washing efficiency can be greatly improved by increasing the solution temperature. The coal tar particles were not extracted by the surfactants used. Coke and tar-sand agglomerates collected from the float and sink gravimetric separation were tested for heating value. The tar exhibited a very high heating value, while the coke had a heating value close to that of bituminous coal. These processes are believed to have the potential to clean up coal gasification plant residues at a fairly low cost, pending pilot-scale testing and a feasibility study.

Wilson, J.W.; Ding, Y. [Univ. of Missouri, Rolla, MO (United States)

1995-12-31T23:59:59.000Z

49

In-Situ Method for Treating Residual Sodium  

DOE Patents [OSTI]

A unique process for deactivating residual sodium in Liquid Metal Fast Breeder Reactor (LMFBR) systems which uses humidified (but not saturated) carbon dioxide at ambient temperature and pressure to convert residual sodium into solid sodium bicarbonate.

Sherman, Steven R.; Henslee, S. Paul

2005-07-19T23:59:59.000Z

50

In-situ method for treating residual sodium  

SciTech Connect (OSTI)

A unique process for deactivating residual sodium in Liquid Metal Fast Breeder Reactor (LMFBR) systems which uses humidified (but not saturated) carbon dioxide at ambient temperature and pressure to convert residual sodium into solid sodium bicarbonate.

Sherman, Steven R. (Idaho Falls, ID); Henslee, S. Paul (Idaho Falls, ID)

2005-07-19T23:59:59.000Z

51

A Practical Model for Mobile, Residual, and Entrapped NAPL in...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A Practical Model for Mobile, Residual, and Entrapped NAPL in Water-Wet Porous Media. A Practical Model for Mobile, Residual, and Entrapped NAPL in Water-Wet Porous Media....

52

Heat transport by residual gases in multilayer vacuum insulation  

Science Journals Connector (OSTI)

The results of an experimental investigation of residual gas heat-transfer in multilayer vacuum insulation are reported. The “thermal paradox” observed ... variation of the residual gas pressure in the insulation

R. S. Mikhal'chenko; A. G. Gerzhin; V. T. Arkhipov…

1968-01-01T23:59:59.000Z

53

Quantifying Residual Strains in Specimens Prepared by Additive Layer Manufacturing  

Science Journals Connector (OSTI)

Residual stresses and strains are prevalent in many components, especially those that are made using additive layer manufacturing. The residual strains are superposed onto any ... analysis may lead to inaccurate ...

A. N. Okioga; R. J. Greene; R. A. Tomlinson

2014-01-01T23:59:59.000Z

54

Testing regression models with residuals as data by Xia Hua.  

E-Print Network [OSTI]

Abstract In polynomial regression ... . In this thesis, I developed a residual based test, the turning point test for residuals, which tests the hypothesis that the kth order polynomial regression holds with ... while the ...

Hua, Xia, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

55

NEURAL NETWORK RESIDUAL STOCHASTIC COSIMULATION FOR ENVIRONMENTAL DATA ANALYSIS  

E-Print Network [OSTI]

on radioactive soil contamination from the Chernobyl fallout. Introduction The problem of analysing environmentalNEURAL NETWORK RESIDUAL STOCHASTIC COSIMULATION FOR ENVIRONMENTAL DATA ANALYSIS V. Demyanov, M original method of stochastic simulation of environmental data -- Neural Network Residual Sequential

56

1-D Transforms for the Motion Compensation Residual  

E-Print Network [OSTI]

Transforms used in image coding are also commonly used to compress prediction residuals in video coding. Prediction residuals have different spatial characteristics from images, and it is useful to develop transforms that ...

Kamisli, Fatih

57

Bioassays of weathered residues of several organic phosphorus insecticides  

E-Print Network [OSTI]

residues on fruit, forage crops, and animals. The effects of temperature, relative humid? ity, light, wind, and simulated rain on the residual toxicities of many of the chlorinated hydrocarbon insecticides used for the control of cotton insects were... humidity. Sunlight was found to be an important factor in reducing the residual effectiveness of dieldrin. Wind and simulated rain reduced the period of residual effectiveness of many of the compounds tested. These investigators have shown...

Hightower, Billie Gene

2013-10-04T23:59:59.000Z

58

Ashot Minasyan SQ-universality and residual properties. . . -slide #1 The SQ-universality and residual properties of  

E-Print Network [OSTI]

Ashot Minasyan SQ-universality and residual properties. . . - slide #1 The SQ-universality Main Results Ashot Minasyan SQ-universality and residual properties. . . - slide #2 SQ-universality and residual properties. . . - slide #2 SQ-universality A group G is called SQ-universal if any countable group

Minasyan, Ashot

59

Kaisheng Biomass Residue Power Co Ltd | Open Energy Information  

Open Energy Info (EERE)

Kaisheng Biomass Residue Power Co Ltd Kaisheng Biomass Residue Power Co Ltd Jump to: navigation, search Name Kaisheng Biomass Residue Power Co., Ltd. Place Nanping City, Fujian Province, China Zip 365001 Sector Biomass Product Chinese developer of a CDM registered biomass plant. References Kaisheng Biomass Residue Power Co., Ltd.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Kaisheng Biomass Residue Power Co., Ltd. is a company located in Nanping City, Fujian Province, China . References ↑ "[ Kaisheng Biomass Residue Power Co., Ltd.]" Retrieved from "http://en.openei.org/w/index.php?title=Kaisheng_Biomass_Residue_Power_Co_Ltd&oldid=347879" Categories: Clean Energy Organizations

60

Washing treatment of automotive shredder residue (ASR)  

Science Journals Connector (OSTI)

Abstract Worldwide, the amount of end-of-life vehicles (ELVs) reaches 50 million units per year. Once the ELV has been processed, it may then be shredded and sorted to recover valuable metals that are recycled in iron and steelmaking processes. The residual fraction, called automotive shredder residue (ASR), represents 25% of the ELV and is usually landfilled. In order to deal with the leachable fraction of ASR that poses a potential threat to the environment, a washing treatment before landfilling was applied. To assess the potential for full-scale application of washing treatment, tests were carried out in different conditions (L/S = 3 and 5 L/kgTS; t = 3 and 6 h). Moreover, to understand whether the grain size of waste could affect the washing efficiency, the treatment was applied to ground (<4 mm) and not-ground samples. The findings obtained revealed that, on average, washing treatment achieved removal rates of more than 60% for dissolved organic carbon (DOC), chemical oxygen demand (COD) and total Kjeldahl nitrogen (TKN). With regard to metals and chlorides, sulphates and fluoride leachable fraction, a removal efficiency of approximately 60% was obtained, as confirmed also by EC values. The comparison between the results for ground and not-ground samples did not highlight significant differences.

Raffaello Cossu; Tiziana Lai

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Measurement and correlation of conditions for entrapment and mobilization of residual oil. Final report  

SciTech Connect (OSTI)

Six tasks are reported: capillary number relationships for rock samples, residual oil saturation near wellbore, residual oil structure, effect of gravity on residual saturation, magnitude of residual oil saturation, and effects of wettability on capillary number relationships. (DLC)

Morrow, N.R.

1981-10-01T23:59:59.000Z

62

Chapter 9 - Zinc and Residue Recycling  

Science Journals Connector (OSTI)

Abstract Annual global production of zinc is more than 13 million tons. More than 50% of this amount is used for galvanizing while the rest is mainly split into brass production, zinc-based alloys, semi manufacturers and zinc compounds such as zinc oxide and zinc sulfate. For the zinc and steel industries, recycling of zinc-coated steel provides an important new source of raw material. Historically, the generation of zinc-rich dusts from steel recycling was a source of loss from the life-cycle (landfill); however, technologies today provide incentive for steel recyclers to minimize waste. Thus, the recycling loop is endless—both zinc and steel can be recycled again and again without losing any of their physical or chemical properties. Depending on the composition of the scrap being recycled, it can either be remelted or returned to the refining process. This chapter describes the main processes for zinc recycling from different scraps and residues.

Jürgen Antrekowitsch; Stefan Steinlechner; Alois Unger; Gernot Rösler; Christoph Pichler; Rene Rumpold

2014-01-01T23:59:59.000Z

63

California: Agricultural Residues Produce Renewable Fuel  

Office of Energy Efficiency and Renewable Energy (EERE)

Logos Technologies and EERE are partnering with Edeniq of Visalia to build a plant that will produce cellulosic ethanol from switchgrass, wood chips, and corn leaves, stalks, and husks--all plentiful, nonfood feedstock sources in California.

64

Fluidized bed gasification of agricultural residue  

E-Print Network [OSTI]

studied to develop a process which can convert organic waste matter into fuel gas. Hammond et al. (1974) described a fixed bed gasifier which operated at 1800 F (1256 K) and atmos- pheric pressure. When woodchips were used as the feed material...

Groves, John David

1979-01-01T23:59:59.000Z

65

California: Agricultural Residues Produce Renewable Fuel | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

that validated the viability of this technology platform for producing cellulosic ethanol from corn stover at reasonable yields. The California Energy Commission has awarded...

66

The usability of switchgrass, rice straw, and logging residue as feedstocks for power generation in East Texas  

E-Print Network [OSTI]

This thesis examines the economic implications of using agriculturally based feedstock for bio-energy production in East Texas. Specifically I examined the use of switchgrass, rice straw, and logging residue as a feedstock for electrical power...

Hong, Sung Wook

2007-09-17T23:59:59.000Z

67

Table 19. U.S. Refiner Residual Fuel Oil Prices  

U.S. Energy Information Administration (EIA) Indexed Site

Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1996...

68

Table 19. U.S. Refiner Residual Fuel Oil Prices  

U.S. Energy Information Administration (EIA) Indexed Site

Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1997...

69

Posters Residual Analysis of Surface Spectral Radiances Between...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 Posters Residual Analysis of Surface Spectral Radiances Between Instrument Observations and Line-by-Line Calculations S. A. Clough and P. D. Brown Atmospheric and Environmental...

70

Water dynamics clue to key residues in protein folding  

SciTech Connect (OSTI)

A computational method independent of experimental protein structure information is proposed to recognize key residues in protein folding, from the study of hydration water dynamics. Based on all-atom molecular dynamics simulation, two key residues are recognized with distinct water dynamical behavior in a folding process of the Trp-cage protein. The identified key residues are shown to play an essential role in both 3D structure and hydrophobic-induced collapse. With observations on hydration water dynamics around key residues, a dynamical pathway of folding can be interpreted.

Gao, Meng [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Zhu, Huaiqiu, E-mail: hqzhu@pku.edu.cn [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Yao, Xin-Qiu [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China) [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Department of Biophysics, Kyoto University, Sakyo Kyoto 606-8502 (Japan); She, Zhen-Su, E-mail: she@pku.edu.cn [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)

2010-01-29T23:59:59.000Z

71

Residual Stresses for Structural Analysis and Fatigue Life Prediction...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Analysis and Fatigue Life Prediction in Vehicle Components: Success stories from the High Temperature Materials Laboratory (HTML) User Program Residual Stresses for Structural...

72

Disappearance of fusionlike residues and the nuclear equation of state  

SciTech Connect (OSTI)

The cross sections for massive residues from {sup 40}Ca+{sup 40}Ca and {sup 40}Ar+{sup 27}Al collisions were calculated with an improved Boltzmann-Uehling-Uhlenbeck equation. The calculated residue cross sections decrease with incident energy, an effect which does not appear related to the residue excitation energy. Larger residue cross sections result from calculations with larger in-medium nucleon-nucleon cross sections or with equations of state which are less attractive at subnuclear density. This dual sensitivity may be eliminated by measurements of observables associated with the coincident light particles.

Xu, H.M.; Lynch, W.G.; Danielewicz, P.; Bertsch, G.F. (National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI (USA) Department of Physics, Michigan State University, East Lansing, MI (USA))

1990-08-13T23:59:59.000Z

73

Phase Chemistry of Tank Sludge Residual Components  

SciTech Connect (OSTI)

The US Department of Energy (DOE) has millions of gallons of high level nuclear waste stored in underground tanks at Hanford, Washington and Savannah River, South Carolina. These tanks will eventually be emptied and decommissioned. This will leave a residue of sludge adhering to the interior tank surfaces that may contaminate nearby groundwaters with radionuclides and RCRA metals. Performance assessment (PA) calculations must be carried out prior to closing the tanks. This requires developing radionuclide release models from the sludges so that the PA calculations can be based on credible source terms. These efforts continued to be hindered by uncertainties regarding the actual nature of the tank contents and the distribution of radionuclides among the various phases. In particular, it is of vital importance to know what radionuclides are associated with solid sludge components. Experimentation on actual tank sludges can be difficult, dangerous and prohibitively expensive. The research funded under this grant for the past three years was intended to provide a cost-effective method for developing the needed radionuclide release models using non-radioactive artificial sludges. Insights gained from this work will also have more immediate applications in understanding the processes responsible for heel development in the tanks and in developing effective technologies for removing wastes from the tanks.

J.L. Krumhansl

2002-04-02T23:59:59.000Z

74

Phytoplankton biomass and residual nitrate in the pelagic ecosystem  

Science Journals Connector (OSTI)

...research-article Research Article Phytoplankton biomass and residual nitrate in the pelagic ecosystem...are linked to changes in the chlorophyll biomass. The model can be treated analytically...Mathematical bounds are found for the autotrophic biomass and the residual nitrate in terms of the...

2003-01-01T23:59:59.000Z

75

Maximum Residual Energy Routing with Reverse Energy Cost  

E-Print Network [OSTI]

node consumes energy, but the receiving node does not. This assumption is not true if acknowledgementsMaximum Residual Energy Routing with Reverse Energy Cost Qiling Xie, Chin-Tau Lea, Mordecai J-The Maximum Residual Energy Path (MREP) routing has been shown an effective routing scheme for energy

Fleischer, Rudolf

76

AIAA-2001-0025 SPECTRUM FATIGUE LIFETIME AND RESIDUAL STRENGTH  

E-Print Network [OSTI]

fit of the two. Direct lifetime under a variety of loads spectra for wind tests of residual strength for a modified standard wind bone coupons were manufactured, tested and favorably turbine spectrum. When a single and residual strength. Over 900 tests spectrum loading and fatigue lifetimes of a typical wind have been run

77

MINIMIZING WASTE AND COST IN DISPOSITION OF LEGACY RESIDUES  

SciTech Connect (OSTI)

Research is being conducted at the Los Alamos National Laboratory (LANL) which is directed toward development of a quantitative basis for disposition of actinide-bearing process residues (both legacy residues and residues generated from ongoing programmatic operations). This research is focused in two directions: (1) identifying minimum negative consequence (waste, dose, cost) dispositions working within regulatory safeguards termination criteria, and (2) evaluating logistics/consequences of across-the-board residue discards such as authorized at Rocky Flats under a safeguards termination variance. The first approach emphasizes Laboratory commitments to environmental stewardship, worker safety, and fiscal responsibility. This approach has been described as the Plutonium Disposition Methodology (PDM) in deference to direction provided by DOE Albuquerque. The second approach is born of the need to expedite removal of residues from storage for programmatic and reasons and residue storage safety concerns. Any disposition path selected must preserve the legal distinction between residues as Special Nuclear Material (SNM) and discardable materials as waste in order to insure the continuing viability of Laboratory plutonium processing facilities for national security operations.

J. BALKEY; M. ROBINSON

2001-05-01T23:59:59.000Z

78

Characterisation of rotary kiln residues from the pyrolysis of shredder residues: Issues with lead  

Science Journals Connector (OSTI)

Stringent legislation is being to be implemented across Europe relating to heavy metal contamination into the environment. This study thus focuses on developing a method for reliably determining the lead content of automotive shredder residue (ASR). The material is first pyrolysed to remove organic fractions. Different analytical methods were then used to investigate the concentrations of heavy metals in the burned char, which varies from chunks of metals in larger sized fractions to fine powders of mostly non-metals. By considering results from ICP-MS, EDXRF, WDXRF and a portable EDXRF, it was found that varying values were obtained but that consistent ‘consensus values’ could be determined. Such ‘consensus’ values of lead, copper, iron and zinc are thus reported, and show that properly depolluted \\{ELVs\\} have significantly lower lead levels than normal shredder residue (SR) feed ?8000 ppm versus 16,000 ppm. The finest fraction, <850 ?m, makes up around half of the mass of the SR and has only 2700 ppm and 5400 ppm lead concentration values for depolluted \\{ELVs\\} and normal SR, respectively, making it of interest for further work to develop uses as a feed in other industries.

Osric T. Forton; Lucas McGrady; M.M. Singh; E.R.M. Taylor; Norman R. Moles; Marie K. Harder

2007-01-01T23:59:59.000Z

79

Pesticide and heavy metal residues in Louisiana river otter  

E-Print Network [OSTI]

chromatography. Hercury levels averaged 1. 29 porn in liver (N=100) and 3. 88 ppm in hair (N=24), Liver and hair mercury residues were highly correlated (r=0. 98). Fetal whole body mercury levels averaged 0. 07 ppm (N=4). Fetal and maternal mercury levels... correlations between ani- mal weights and residue levels were observed for mercury, dieldrin, and mirex. There were no apparent relationships between residue levels of mercury and liver weight or liver:carcass weight ratio. There was no significant...

Beck, Debra Lynn

2012-06-07T23:59:59.000Z

80

Automobile Shredder Residue (ASR) destruction in a plasma gasification reactor  

Science Journals Connector (OSTI)

Test results on Automobile Shredder Residue (ASR), or car fluff, demonstrated destruction efficiency and safe conversion to synthesis gas and a glass residue, in a plasma gasification system. The synthesis gas consists primarily of hydrogen and carbon monoxide in the range between 20 and 22 vol-% respectively, or 45 and 55 vol-% dry basis, when corrected for nitrogen. In dry reforming operation, carbon dioxide conversion approached 90%. The system is designed to work with oxygen in autothermal conditions, reducing thus the electric power requirement for the plasma reactor. The vitrified residue leach rate makes the product suitable for construction works.

Marco G. Tellini; Paolo Centola; James A. Batdorf; William J. Quapp

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

A manual for implementing residual radioactive material guidelines  

SciTech Connect (OSTI)

This manual presents information for implementing US Department of Energy (DOE) guidelines for residual radioactive material at sites identified by the Formerly Utilized Sites Remedial Action Program (FUSRAP) and the Surplus Facilities Management Program (SFMP). It describes the analysis and models used to derive site-specific guidelines for allowable residual concentrations of radionuclides in soil and the design and use of the RESRAD computer code for calculating guideline values. It also describes procedures for implementing DOE policy for reducing residual radioactivity to levels that are as low as reasonably achievable. 36 refs., 16 figs, 22 tabs.

Gilbert, T.L.; Yu, C.; Yuan, Y.C.; Zielen, A.J.; Jusko, M.J.; Wallo, A. III

1989-06-01T23:59:59.000Z

82

The investigation of the effects of wettability on residual oil after water flooding  

E-Print Network [OSTI]

THE INVESTIGATION OF THE EFFECTS OF WETTABILITY ON RESIDUAL OIL AFTER WATER FLOODING A Thesis BY E. 0, BUR JA Approved as to style and content by: (Cha rman of C mmittee (Head of Department) (Mo th (Year) THE INVESTIGATION OF THE EFFECTS... OF WETTABILITY ON RESIDUAL OIL AFTER WATER FLOODING By E. O. Burja A Thesis Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Major Subject...

Burja, Edward Oscar

1953-01-01T23:59:59.000Z

83

Sustainable Heat and Electricity from Sugarcane Residues Gasification in Brazil  

Science Journals Connector (OSTI)

Sugarcane residues, in the form of bagasse and cane tops and leaves, represent a large renewable biomass energy resource in Brazil. Bagasse is currently used to satisfy the energy needs of the sugar and alcohol i...

Ausilio Bauen

2002-01-01T23:59:59.000Z

84

Infrared thermography to detect residual ceramic in gas turbine blades  

Science Journals Connector (OSTI)

A serious problem in the production of gas turbine blades is the detection of residual ceramic cores inside the cooling passages; in ... the presence of even small ceramic pieces affects turbine performance and m...

C. Meola; G.M. Carlomagno; M. Di Foggia; O. Natale

2008-06-01T23:59:59.000Z

85

Erratum to: Crop Residue Considerations for Sustainable Bioenergy Feedstock Supplies  

Science Journals Connector (OSTI)

Two regrettable errors occurred in citing a critical funding source for the multi-location research summarized in the 2014 article entitled “Crop Residue Considerations for Sustainable Bioenergy Feedstock Supplie...

Douglas L. Karlen; Jane M. F. Johnson

2014-09-01T23:59:59.000Z

86

FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999  

E-Print Network [OSTI]

FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999 After completion of all deliverables required under a fixed-price award, after costs in fulfilling the requirements of the award have been

Weston, Ken

87

Tropical Residual Soils Geological Society Engineering Group Working Party Report  

Science Journals Connector (OSTI)

...Clanan, M. B. 1982. Settlement of a tower on residual soil. Proceedings of Conference...i trench [ ] ~-~=___ ,~'A dolly ;' ;i i [ l Jacking undisturbed core-cutter sampler. excavation...

88

Modeling, Optimization and Economic Evaluation of Residual Biomass Gasification  

E-Print Network [OSTI]

Gasification is a thermo-chemical process which transforms biomass into valuable synthesis gas. Integrated with a biorefinery it can address the facility’s residue handling challenges and input demands. A number of feedstock, technology, oxidizer...

Georgeson, Adam

2012-02-14T23:59:59.000Z

89

Present safeguards in Great Britain against pesticide residues and hazards  

Science Journals Connector (OSTI)

A description of the direct legislative measures taken in Great Britain to protect the public from contamination of food by pesticide residues would be brief for, today, but two regulations exist, specifying t...

H. Martin

1963-01-01T23:59:59.000Z

90

An urban infill : a residual site in Boston  

E-Print Network [OSTI]

This thesis is concerned with the treatment of residual sites in the context of the urban environment and in particular with the wounds inflicted by the passage of the Massachusetts Turnpike through the city of Boston. The ...

Savvides, Andreas L. (Andreas Loucas)

1996-01-01T23:59:59.000Z

91

RetroFILL : residual spaces as urban infill  

E-Print Network [OSTI]

In any city there are small slivers and chunks of awkward spaces - in between buildings, occupying edge conditions, not large enough to warrant many forms of traditional use - which can be termed residual. These areas of ...

Kobel, Marika

2010-01-01T23:59:59.000Z

92

RELATIVE RESIDUAL BOUNDS FOR INDEFINITE SINGULAR HERMITIAN MATRICES  

E-Print Network [OSTI]

residual bounds, indefinite Hermitian matrix, eigen- values, perturbation theory, relative perturbations. These theorems are proper generalization of results on a semi-definite Hermitian matrix SIAM Journal on Matrix

Truhar, Ninoslav

93

GEOCHEMICAL TESTING AND MODEL DEVELOPMENT - RESIDUAL TANK WASTE TEST PLAN  

SciTech Connect (OSTI)

This Test Plan describes the testing and chemical analyses release rate studies on tank residual samples collected following the retrieval of waste from the tank. This work will provide the data required to develop a contaminant release model for the tank residuals from both sludge and salt cake single-shell tanks. The data are intended for use in the long-term performance assessment and conceptual model development.

CANTRELL KJ; CONNELLY MP

2010-03-09T23:59:59.000Z

94

Residual strain measurements on drill cores from Reydarfjordur, Iceland  

E-Print Network [OSTI]

RESIDUAL STRAIN MEASUREMENTS ON DRILL CORES FROM REYDARFJORDUR, ICELAND A Thesis BESIM BASLANGIC Submitted to the Office oi' Graduate Studies of Texas A&M University in partial fulfillment of the requirements I' or the degree of MAST...'ER OF SCIENCE May 1989 Major Subject: Geophysics RESIDUAL STRAIN MEASLREMENTS ON DRILL CORES FROM REYDARFJORDUR, ICELAVD A Thesis BESIM BASLANGIC Approved as to style and content by: Earl R. Hoskins (Chair of Committee) Richard L. Carlson (Member...

Baslangic, Besim

2012-06-07T23:59:59.000Z

95

Opportunities and Challenges for Nondestructive Residual Stress Assessment  

SciTech Connect (OSTI)

For a long time, nondestructive residual stress assessment has been one of the greatest opportunities as well as one of the greatest challenges for the NDE community, and probably it will remain so in the foreseeable future. The most critical issue associated with nondestructive residual stress assessment seems to be that of selectivity. Numerous NDE methods have been found to be sufficiently sensitive to the presence of residual stress, but unfortunately also rather sensitive to other spurious variations that usually accompany residual stresses, such as anisotropic texture, microstructural inhomogeneity, plastic deformation, etc., which could interfere with, or even overshadow, the elastic strain caused by the sought residual stress. The only sufficiently selective NDE method that is more or less immune from these spurious effects is X-ray diffraction measurement, which however does not have the required penetration depth in most applications unless high-energy neutron radiation is used. It is timely for the community to sit back and ask where we are in this important area. This paper presents an overview of the various indirect techniques that have been used to measure residual stress in the past. It is shown that traditional techniques have a number of limitations, which have spurred several recent research programs. Some of the new techniques that are presently being examined in the NDE community are reviewed and the current status of these research efforts is assessed.

Nagy, P. B. [Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221-0070 (United States)

2006-03-06T23:59:59.000Z

96

Hanford tank residual waste – contaminant source terms and release models  

SciTech Connect (OSTI)

Residual waste is expected to be left in 177 underground storage tanks after closure at the U.S. Department of Energy’s Hanford Site in Washington State (USA). In the long term, the residual wastes represent a potential source of contamination to the subsurface environment. Residual materials that cannot be completely removed during the tank closure process are being studied to identify and characterize the solid phases and estimate the release of contaminants from these solids to water that might enter the closed tanks in the future. As of the end of 2009, residual waste from five tanks has been evaluated. Residual wastes from adjacent tanks C-202 and C-203 have high U concentrations of 24 and 59 wt%, respectively, while residual wastes from nearby tanks C-103 and C-106 have low U concentrations of 0.4 and 0.03 wt%, respectively. Aluminum concentrations are high (8.2 to 29.1 wt%) in some tanks (C-103, C-106, and S-112) and relatively low (<1.5 wt%) in other tanks (C-202 and C-203). Gibbsite is a common mineral in tanks with high Al concentrations, while non-crystalline U-Na-C-O-P±H phases are common in the U-rich residual wastes from tanks C-202 and C-203. Iron oxides/hydroxides have been identified in all residual waste samples studied to date. Contaminant release from the residual wastes was studied by conducting batch leach tests using distilled deionized water, a Ca(OH)2-saturated solution, or a CaCO3-saturated water. Uranium release concentrations are highly dependent on waste and leachant compositions with dissolved U concentrations one or two orders of magnitude higher in the tests with high U residual wastes, and also higher when leached with the CaCO3-saturated solution than with the Ca(OH)2-saturated solution. Technetium leachability is not as strongly dependent on the concentration of Tc in the waste, and it appears to be slightly more leachable by the Ca(OH)2-saturated solution than by the CaCO3-saturated solution. In general, Tc is much less leachable (<10 wt% of the available mass in the waste) than previously predicted. This may be due to the coprecipitation of trace concentrations of Tc in relatively insoluble phases such as Fe oxide/hydroxide solids.

Deutsch, William J.; Cantrell, Kirk J.; Krupka, Kenneth M.; Lindberg, Michael J.; Serne, R. Jeffrey

2011-08-23T23:59:59.000Z

97

Measuring depth profiles of residual stress with Raman spectroscopy  

SciTech Connect (OSTI)

Knowledge of the variation of residual stress is a very important factor in understanding the properties of machined surfaces. The nature of the residual stress can determine a part`s susceptibility to wear deformation, and cracking. Raman spectroscopy is known to be a very useful technique for measuring residual stress in many materials. These measurements are routinely made with a lateral resolution of 1{mu}m and an accuracy of 0.1 kbar. The variation of stress with depth; however, has not received much attention in the past. A novel technique has been developed that allows quantitative measurement of the variation of the residual stress with depth with an accuracy of 10nm in the z direction. Qualitative techniques for determining whether the stress is varying with depth are presented. It is also demonstrated that when the stress is changing over the volume sampled, errors can be introduced if the variation of the stress with depth is ignored. Computer aided data analysis is used to determine the depth dependence of the residual stress.

Enloe, W.S.; Sparks, R.G.; Paesler, M.A.

1988-12-01T23:59:59.000Z

98

GIS mapping of rice straw residue for bioenergy purpose in a rural area of Assam, India  

Science Journals Connector (OSTI)

Abstract Agricultural residues are a promising source of biomass energy. However, agricultural residues are seasonally available and loosely distributed over large geographical areas and hence require spatio-temporal assessment. Satellite image is a handy input for such assessment and high resolution image could increase the preciseness of estimation. In the present study, rice cropland is mapped using high resolution WorldView-2 satellite image in a rural area of Assam, India. The rice cropland map in combination with agricultural statistics is then analyzed in GIS in order to assess rice straw availability for potential bioenergy generation. About 54% land of study area belongs to rice cropland, which can contribute 5360 tonnes surplus rice straw per annum (equivalent to 83,296 GJ). Potential electric power capacity from the surplus rice straw in the study area is 523.50 kW. However, at individual village level the potential varies from 4.45 kW to 28.69 kW. Considering the power crisis in India, the findings of this work are expected to assist policy makers and biomass energy developers in decision making process. Particularly, this paper generated information on village level rice straw residue availability and subsequently potential electric power capacity. Such information is limited in the India expect for few states.

Moonmoon Hiloidhari; D.C. Baruah

2014-01-01T23:59:59.000Z

99

Evidence for residual elastic strain in deformed natural quartz  

SciTech Connect (OSTI)

Residual elastic strain in naturally deformed, quartz-containing rocks can be measured quantitatively in a petrographic thin section with high spatial resolution using Laue microdiffraction with white synchrotron x-rays. The measurements with a resolution of one micrometer allow the quantitative determination of the deviatoric strain tensor as a function of position within the crystal investigated. The observed equivalent strain values of 800-1200 microstrains represent a lower bound of the actual preserved residual strain in the rock, since the stress component perpendicular to the cut sample surface plane is released. The measured equivalent strain translates into an equivalent stress in the order of {approx} 50 MPa.

Kunz, Martin; Chen, Kai; Tamura,Nobumichi; Wenk, Hans-Rudolf

2009-01-30T23:59:59.000Z

100

A Residual Mass Ballistic Testing Method to Compare Armor Materials or Components (Residual Mass Ballistic Testing Method)  

SciTech Connect (OSTI)

A statistics based ballistic test method is presented for use when comparing multiple groups of test articles of unknown relative ballistic perforation resistance. The method is intended to be more efficient than many traditional methods for research and development testing. To establish the validity of the method, it is employed in this study to compare test groups of known relative ballistic performance. Multiple groups of test articles were perforated using consistent projectiles and impact conditions. Test groups were made of rolled homogeneous armor (RHA) plates and differed in thickness. After perforation, each residual projectile was captured behind the target and its mass was measured. The residual masses measured for each test group were analyzed to provide ballistic performance rankings with associated confidence levels. When compared to traditional V50 methods, the residual mass (RM) method was found to require fewer test events and be more tolerant of variations in impact conditions.

Benjamin Langhorst; Thomas M Lillo; Henry S Chu

2014-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Assessment of dry residual biomass potential for use as alternative energy source in the party of General Pueyrredón, Argentina  

Science Journals Connector (OSTI)

Abstract The present article assesses the residual biomass availability and its energy potential in the Party of General Pueyrredón, a region located southeast of the province of Buenos Aires, Argentina. These were considered herbaceous and vegetable residues derived from the agricultural activity developed in the region, and forest residues resulting from the pruning of urban trees and garden maintenance. The estimates were based on statistical information of the 2011–2012 harvest and a series of parameters obtained from an extensive literature review. The calculations resulted in an availability of residual biomass of 204,536 t/year, implying an energy potential of 2605 TJ/year. If this biomass is used to generate electricity, it could supply 76,000 users from Mar del Plata city, the largest consumer center in the region. If the same available biomass is used for heat generation, 25,160 users could be supplied by the available residual biomass. The authors concluded that the residual biomass energy potential is significant in the studied region, but a more detailed study must be conducted to assess the techno-economic feasibility of using the available residual biomass as alternative energy source.

Justo José Roberts; Agnelo Marotta Cassula; Pedro Osvaldo Prado; Rubens Alves Dias; José Antonio Perrella Balestieri

2015-01-01T23:59:59.000Z

102

Residual Fuel Oil Prices, Average - Sales to End Users  

U.S. Energy Information Administration (EIA) Indexed Site

Product/Sales Type: Residual Fuel, Average - Sales to End Users Residual Fuel, Average - Sales for Resale Sulfur Less Than or Equal to 1% - Sales to End Users Sulfur Less Than or Equal to 1% - Sales for Resale Sulfur Greater Than 1% - Sales to End Users Sulfur Greater Than 1% - Sales for Resale Period: Monthly Annual Product/Sales Type: Residual Fuel, Average - Sales to End Users Residual Fuel, Average - Sales for Resale Sulfur Less Than or Equal to 1% - Sales to End Users Sulfur Less Than or Equal to 1% - Sales for Resale Sulfur Greater Than 1% - Sales to End Users Sulfur Greater Than 1% - Sales for Resale Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Product/Sales Type Area Apr-13 May-13 Jun-13 Jul-13 Aug-13 Sep-13 View History U.S. - - - - - - 1983-2013 East Coast (PADD 1) - - - - - - 1983-2013 New England (PADD 1A) - - - - - - 1983-2013 Connecticut - - - - - - 1983-2013 Maine - - - - - - 1983-2013 Massachusetts - - - - - - 1983-2013

103

Automotive shredder residue (ASR) characterization for a valuable management  

Science Journals Connector (OSTI)

Car fluff is the waste produced after end-of-life-vehicles (ELVs) shredding and metal recovery. It is made of plastics, rubber, glass, textiles and residual metals and it accounts for almost one-third of a vehicle mass. Due to the approaching of Directive 2000/53/EC recycling targets, 85% recycling rate and 95% recovery rate in 2015, the implementation of automotive shredder residue (ASR) sorting and recycling technologies appears strategic. The present work deals with the characterization of the shredder residue coming from an industrial plant, representative of the Italian situation, as for annual fluxes and technologies involved. The aim of this study is to characterize ASR in order to study and develop a cost effective and environmentally sustainable recycling system. Results show that almost half of the residue is made of fines and the remaining part is mainly composed of polymers. Fine fraction is the most contaminated by mineral oils and heavy metals. This fraction produces also up to 40% ashes and its LHV is lower than the plastic-rich one. Foam rubber represents around half of the polymers share in car fluff. Moreover, some chemical–physical parameters exceed the limits of some parameters fixed by law to be considered refuse derived fuel (RDF). As a consequence, ASR needs to be pre-treated in order to follow the energy recovery route.

Luciano Morselli; Alessandro Santini; Fabrizio Passarini; Ivano Vassura

2010-01-01T23:59:59.000Z

104

Pyrolysis of automotive shredder residues: a lumped kinetic characterization  

Science Journals Connector (OSTI)

A lumped kinetic model for the pyrolysis of industrial wastes of unknown chemical composition is developed. The model is applied to the pyrolysis of automotive shredder residues (ASRs), studied by means of thermogravimetric and calorimetric analyses, in isothermal and non-isothermal conditions.

Oreste Patierno; Paola Cipriani; Fausto Pochetti; Massimiliano Giona

1998-01-01T23:59:59.000Z

105

Removal of heavy metals from samples of residual sludge  

Science Journals Connector (OSTI)

Nitric acid leaching processes were evaluated for removal of heavy metals from samples of residual sludge from an industrial and municipal wastewater plant. The study showed that an acid:water ratio of 1:1 and a nitric acid concentration of 2 mol 1?1 gave efficient removal of 86.7%, 100% and 100% of copper, nickel and arsenic.

Jose Abrego

1996-01-01T23:59:59.000Z

106

Removal of residual particulate matter from filter media  

DOE Patents [OSTI]

A method for removing residual filter cakes that remain adhered to a filter after typical particulate removal methodologies have been employed, such as pulse-jet filter element cleaning, for all cleanable filters used for air pollution control, dust control, or powder control.

Almlie, Jay C; Miller, Stanley J

2014-11-11T23:59:59.000Z

107

COMMUNICATION Are Residues in a Protein Folding Nucleus  

E-Print Network [OSTI]

COMMUNICATION Are Residues in a Protein Folding Nucleus Evolutionarily Conserved? Yan Yuan Tseng is the hallmark of life. It is important to understand how protein folding and evolution influence each other in protein folding nucleus as measured by experi- mental f-value and selection pressure as measured by v

Dai, Yang

108

Microwave calcination for plutonium immobilization and residue stabilization  

SciTech Connect (OSTI)

In the late 1980`s development was begun on a process using microwave energy to vitrify low level mixed waste sludge and transuranic mixed waste sludge generated in Building 374 at Rocky Flats. This process was shown to produce a dense, highly durable waste form. With the cessation of weapons production at Rocky Flats, the emphasis has changed from treatment of low level and TRU wastes to stabilizaiton of plutonium oxide and residues. This equipment is versatile and can be used as a heat source to calcine, react or vitrify many types of residues and oxides. It has natural economies in that it heats only the material to be treated, significantly reducing cycle times over conventional furnaces. It is inexpensive to operate in that most of the working components remain outside of any necessary contamination enclosure and therefore can easily be maintained. Limited testing has been successfully performed on cerium oxide (as a surrogate for plutonium oxide), surrogate electrorefining salts, surrogate residue sludge and residue ash. Future plans also include tests on ion exchange resins. In an attempt to further the usefullness of this technology, a mobile, self-contained microwave melting system is currently under development and expected to be operational at Rocky Flats Enviromental Technology Site by the 4th quarter of FY96.

Harris, M.J.; Rising, T.L.; Roushey, W.J.; Sprenger, G.S. [Kaiser-Hill Co., Golden, CO (United States)

1995-12-01T23:59:59.000Z

109

Sorption characteristics of polycyclic aromatic hydrocarbons in aluminum smelter residues  

SciTech Connect (OSTI)

High temperature carbon oxidation in primary aluminum smelters results in the release of polycyclic aromatic hydrocarbons (PAH) into the environment. The main source of PAH are the anodes, which are composed of petroleum coke (black carbon, BC) and coal tar pitch. To elucidate the dominant carbonaceous phase controlling the environmental fate of PAH in aluminum smelter residues (coke BC and/or coal tar), the sorptive behavior of PAHs has been determined, using passive samplers and infinite-sink desorption methods. Samples directly from the wet scrubber were studied as well as ones from an adjacent 20-year old storage lagoon and roof dust from the smelter. Carbon-normalized distribution coefficients of native PAHs were 2 orders of magnitude higher than expected based on amorphous organic carbon (AOC)/water partitioning, which is in the same order of magnitude as reported literature values for soots and charcoals. Sorption isotherms of laboratory-spiked deuterated phenanthrene showed strong (about 100 times stronger than AOC) but nonetheless linear sorption in both fresh and aged aluminum smelter residues. The absence of nonlinear behavior typical for adsorption to BC indicates that PAH sorption in aluminum smelter residues is dominated by absorption into the semi-solid coal tar pitch matrix. Desorption experiments using Tenax showed that fresh smelter residues had a relatively large rapidly desorbing fraction of PAH (35-50%), whereas this fraction was strongly reduced (11-16%) in the lagoon and roof dust material. Weathering of the coal tar residue and/or redistribution of PAH between coal tar and BC phases could explain the reduced availability in aged samples. 38 refs., 5 figs., 1 tab.

Gijs D. Breedveld; Emilien Pelletier; Richard St. Louis; Gerard Cornelissen [Norwegian Geotechnical Institute, Oslo (Norway)

2007-04-01T23:59:59.000Z

110

Removal of wool wax, nonylphenol ethoxylates and pesticide residues from wool scour effluent  

Science Journals Connector (OSTI)

The aqueous scouring of raw wool produces a highly polluting effluent that primarily contains emulsified wool wax, together with high levels of nonionic detergents and trace levels of various agricultural pesticides. The SIROLAN CF chemical flocculation process transferred over 95% of the wool wax and detergent and greater than 98% of the pesticide residues from the wastewater stream to a spadeable sludge that was used as a starting material to produce a high quality compost. During the composting process the nonionic detergents and organophosphorus pesticide residues were degraded to below detectable levels while the pyrethroid pesticides, cypermethrin and cyhalothrin, together with the organochlorine pesticide, lindane were degraded to below 15% of their initial levels.

F.William Jones; David J Westmoreland

1999-01-01T23:59:59.000Z

111

Residual Stresses in 21-6-9 Stainless Steel Warm Forgings  

SciTech Connect (OSTI)

Forging residual stresses are detrimental to the production and performance of derived machined parts due to machining distortions, corrosion drivers and fatigue crack drivers. Residual strains in a 21-6-9 stainless steel warm High Energy Rate Forging (HERF) were measured via neutron diffraction. The finite element analysis (FEA) method was used to predict the residual stresses that occur during forging and water quenching. The experimentally measured residual strains were used to calibrate simulations of the three-dimensional residual stress state of the forging. ABAQUS simulation tools predicted residual strains that tend to match with experimental results when varying yield strength is considered.

Everhart, Wesley A.; Lee, Jordan D.; Broecker, Daniel J.; Bartow, John P.; McQueen, Jamie M.; Switzner, Nathan T.; Neidt, Tod M.; Sisneros, Thomas A.; Brown, Donald W.

2012-11-14T23:59:59.000Z

112

FIRST DRAFT OF OUTLINE: RPSEA 1 RESIDUAL OIL ZONE RESEARCH  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Commercial Exploitation and the Origin of Commercial Exploitation and the Origin of Residual Oil Zones: Developing a Case History in the Permian Basin of New Mexico and West Texas RPSEA PROJECT NUMBER.FINAL Commercial Exploitation and the Origin of Residual Oil Zones: Developing a Case History in the Permian Basin of New Mexico and West Texas Contract 81.089 08123-19-RPSEA June 28, 2012 Dr. Robert Trentham Director, Center for Energy and Economic Diversification The University of Texas of the Permian Basin Odessa, Texas 79762 L. Steven Melzer Melzer Consulting Midland, Texas 79701 David Vance Arcadis, U. S. Midland, Texas 79701 LEGAL NOTICE This report was prepared by Dr Robert Trentham as an account of work sponsored by the Research Partnership to Secure Energy for America, RPSEA. Neither RPSEA

113

The Particle Adventure | What holds it together? | Residual EM force  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EM force EM force Residual EM force Atoms usually have the same numbers of protons and electrons. They are electrically neutral, therefore, because the positive protons cancel out the negative electrons. Since they are neutral, what causes them to stick together to form stable molecules? The answer is a bit strange: we've discovered that the charged parts of one atom can interact with the charged parts of another atom. This allows different atoms to bind together, an effect called the residual electromagnetic force. So the electromagnetic force is what allows atoms to bond and form molecules, allowing the world to stay together and create the matter you interact with all of the time. Amazing, isn't it? All the structures of the world exist simply because protons and electrons have opposite charges!

114

In situ ultrahigh vacuum residual gas analyzer 'calibration'  

SciTech Connect (OSTI)

Knowing the residual gas spectrum is essential for many applications and research in ultrahigh vacuum (UHV). Residual gas analyzers (RGAs) are used for both qualitative and quantitative gas analyses, where the quadrupole mass analyzers are now the most popular. It was found that RGAs supplied by different manufacturers are not necessarily well calibrated for quantitative gas analysis. A procedure applied for in situ RGA 'calibration' against a calibrated UHV total pressure gauge is described in this article. It was found that special attention should be paid to H{sub 2} calibration, as RGAs are usually much more sensitive to H{sub 2} than ionization gauges. The calibration coefficients are quite reproducible in Faraday cup mode, however, using the secondary electron multiplier requires frequent checks of the calibration coefficients. The coefficients obtained for the RGA allow the use of the RGA as an accurate device for gas spectrum analysis.

Malyshev, O. B.; Middleman, K. J. [ASTeC, STFC Daresbury Laboratory, Warrington WA4 4AD (United Kingdom)

2008-11-15T23:59:59.000Z

115

Vacuum pyrolysis of bark residues and primary sludges  

SciTech Connect (OSTI)

Black spruce bark residues and primary sludges derived from the operation of the Daishowa pulp and paper plant in Quebec City, PQ, were processed by vacuum pyrolysis in a laboratory-scale batch reactor. The pyrolysis oil, water, charcoal, and gas were recovered and analyzed. The bark residues yielded 30.6% oil and 34.1% charcoal, and the primary sludges gave 40.1% oil and 30.1% charcoal on a feedstock air-dry basis. The oil phases recovered from the two pyrolysis experiments were fractionated into eight fractions; they were analyzed by gas chromatography/mass spectrometry. Both pyrolysis oil samples had a high content of phenolic compounds. These oils contained various fine chemicals that have possible commercial potential. Aliphatic and aromatic hydrocarbons, as well as long- and short-chain carboxylic acids, are also present in both pyrolysis oils.

Pakdel, H.; Couture, G.; Roy, C. (Univ. Laval, Ste-Foy, Quebec (Canada))

1994-07-01T23:59:59.000Z

116

Combustion of textile residues in a packed bed  

SciTech Connect (OSTI)

Textile is one of the main components in the municipal waste which is to be diverted from landfill for material and energy recovery. As an initial investigation for energy recovery from textile residues, the combustion of cotton fabrics with a minor fraction of polyester was investigated in a packed bed combustor for air flow rates ranging from 117 to 1638 kg/m{sup 2} h (0.027-0.371 m/s). Tests were also carried out in order to evaluate the co-combustion of textile residues with two segregated waste materials: waste wood and cardboard. Textile residues showed different combustion characteristics when compared to typical waste materials at low air flow rates below 819 kg/m{sup 2} h (0.186 m/s). The ignition front propagated fast along the air channels randomly formed between packed textile particles while leaving a large amount of unignited material above. This resulted in irregular behaviour of the temperature profile, ignition rate and the percentage of weight loss in the ignition propagation stage. A slow smouldering burn-out stage followed the ignition propagation stage. At air flow rates of 1200-1600 kg/m{sup 2} h (0.272-0.363 m/s), the bed had a maximum burning rate of about 240 kg/m{sup 2} h consuming most of the combustibles in the ignition propagation stage. More uniform combustion with an increased burning rate was achieved when textile residues were co-burned with cardboard that had a similar bulk density. (author)

Ryu, Changkook; Phan, Anh N.; Sharifi, Vida N.; Swithenbank, Jim [Sheffield University Waste Incineration Centre (SUWIC), Department of Chemical and Process Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom)

2007-08-15T23:59:59.000Z

117

Wave induced residual pore-water pressures in sandbeds  

E-Print Network [OSTI]

for her help in typing and proofreading the text, and especially for her undying moral support during our stay in College Station. ACKNOWLED6NENTS The author is grateful to Drs. John B. Herbich and Wayne A. Dunlap for their advice and guidance... Size Analysis for Glass Beads . . . . . . . . 24 Waterproof Housing for Pressure Transducers 27 10 Experiment 1 Experiment 2 Experiment 3 Experiment 4 Experiment 5 Experiment 6 32 33 34 35 36 37 12 13 Effect of Residual Pore...

DeVries, Jack Walter

2012-06-07T23:59:59.000Z

118

Type Ia Supernova Hubble Residuals and Host-Galaxy Properties  

SciTech Connect (OSTI)

Kim et al. (2013) [K13] introduced a new methodology for determining peak- brightness absolute magnitudes of type Ia supernovae from multi-band light curves. We examine the relation between their parameterization of light curves and Hubble residuals, based on photometry synthesized from the Nearby Supernova Factory spec- trophotometric time series, with global host-galaxy properties. The K13 Hubble residual step with host mass is 0.013 ? 0.031 mag for a supernova subsample with data coverage corresponding to the K13 training; at ? 1?, the step is not significant and lower than previous measurements. Relaxing the data coverage requirement the Hubble residual step with host mass is 0.045 ? 0.026 mag for the larger sample; a calculation using the modes of the distributions, less sensitive to outliers, yields a step of 0.019 mag. The analysis of this article uses K13 inferred luminosities, as distinguished from previous works that use magnitude corrections as a function of SALT2 color and stretch param- eters: Steps at> 2? significance are found in SALT2 Hubble residuals in samples split by the values of their K13 x(1) and x(2) light-curve parameters. x(1) affects the light- curve width and color around peak (similar to the?m15 and stretch parameters), and x(2) affects colors, the near-UV light-curve width, and the light-curve decline 20 to 30 days after peak brightness. The novel light-curve analysis, increased parameter set, and magnitude corrections of K13 may be capturing features of SN Ia diversity arising from progenitor stellar evolution.

Nearby Supernova Factory; Kim, A. G.; Aldering, G.; Antilogus, P.; Aragon, C.; Bailey, S.; Baltay, C.; Bongard, S.; Buton, C.; Canto, A.; Cellier-Holzem, F.; Childress, M.; Chotard, N.; Copin, Y.; Fakhouri, H. K.; Feindt, U.; Fleury, M.; Gangler, E.; Greskovic, P.; Guy, J.; Kowalski, M.; Lombardo, S.; Nordin, J.; Nugent, P.; Pain, R.; Pecontal, E.; Pereira, R.; Perlmutter, S.; Rabinowitz, D.; Rigault, M.; Runge, K.; Saunders, C.; Scalzo, R.; Smadja, G.; Tao, C.; Thomas, R. C.; Weaver, B. A.

2014-01-17T23:59:59.000Z

119

Diesel engine lubrication with poor quality residual fuel  

SciTech Connect (OSTI)

The quality of marine residual fuel is declining. This is being caused by a gradual trend towards production of heavier crudes and increased residuum conversion processes in refineries to meet light product demand while holding down crude runs. Additionally, more stringent inland fuel sulfur regulations have caused the higher sulfur residues to be used for marine residual fuel blending. Engine manufacturers are making major efforts in design so that their engines can burn these fuels at high efficiency with minimum adverse effects. The oil industry is developing improved lubricants to reduce as much as possible the increased wear and deposit formation caused by these poor quality fuels. To guide the development of improved lubricants, knowledge is required about the impact of the main fuel characteristics on lubrication. This paper summarizes work conducted to assess the impact of fuel sulfur, Conradson carbon and asphaltenes on wear and deposit formation in engines representative of full scale crosshead diesel engines and medium speed trunk piston engines. Results obtained with improved lubricants in these engines are reviewed.

Van der Horst, G.W.; Hold, G.E.

1983-01-01T23:59:59.000Z

120

Residual Stress Evaluation within a Crimped Splice Connector Assembly  

SciTech Connect (OSTI)

In power transmission, connectors play an important role in the efficiency and reliability of the system. Due to the increase of power demand and lack of new infrastructure, existing overhead power transmission lines often need to operate at temperatures higher than the original design criteria. However, this had led to the accelerated aging and degradation of splice connectors, which has been manifested by the formation of hot-spots that have been revealed by infrared imaging during inspection of transmission lines operating at elevated temperatures. The implications of connector aging is two-fold: (1) significant increase in resistivity of the splice connector (i.e., less efficient transmission of electricity) and (2) significant reduction in the connector clamping strength, which ultimately results in separation of the power transmission line at the joint. Therefore, the splice connector has become the weakest link in the electric power transmission infrastructure. The compressive residual stresses induced by the crimping process within the splice provide the clamping forces to secure the conductor and therefore, the determination of the state of residual stresses in splice connectors is a necessary requirement to provide an accurate estimate of their service lifetime. This paper presents a protocol of utilizing finite-element analysis and neutron scattering experiments for evaluating the residual stress fields within a crimped single-stage splice connector assembly.

Wang, Jy-An John [ORNL; An, Ke [ORNL; Lara-Curzio, Edgar [ORNL; Hubbard, Camden R [ORNL; King Jr, Thomas J [ORNL; Graziano, Joe [Tennessee Valley Authority (TVA); Chan, John [Electric Power Research Institute (EPRI)

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Washing of Rocky Flats Combustible Residues (Conducted March - May 1995)  

SciTech Connect (OSTI)

The scope of this project is to determine the feasibility of washing plutonium-containing combustible residues using ultrasonic disruption as a method for dislodging particulate. Removal of plutonium particulate and, to a lesser extent, solubilized plutonium from the organic substrate should substantially reduce potential fire, explosion or radioactive release hazards due to radiolytic hydrogen generation or high flammability. Tests were conducted on polypropylene filters which were used as pre-filters in the rich-residue ion-exchange process at the Los Alamos Plutonium Facility. These filters are similar to the Ful-Flo{reg_sign} cartridges used at Rocky Flats that make up a substantial fraction of the combustible residues with the highest hazard rating. Batch experiments were run on crushed filter material in order to determine the amount of Pu removed by stirring, stirring and sonication, and stirring and sonication with the introduction of Pu-chelating water-soluble polymers or surfactants. Significantly more Pu is removed using sonication and sonication with chelators than is removed with mechanical stirring alone.

Mary E. Barr; Ann R. Schake; David A. Romero; Gordon D. Jarvinen

1999-03-01T23:59:59.000Z

122

Crop Residue Removal for Bioenergy Reduces Soil Carbon Pools: How Can We Offset Carbon Losses?  

Science Journals Connector (OSTI)

Crop residue removal for bioenergy can deplete soil organic carbon (SOC) ... been, however, widely discussed. This paper reviews potential practices that can be used to offset the SOC lost with residue removal. Literature

Humberto Blanco-Canqui

2013-03-01T23:59:59.000Z

123

A Systematic Investigation for Reducing Shredder Residue for Complex Automotive Seat Subassemblies  

Science Journals Connector (OSTI)

Automotive shredder residue is a byproduct of the automotive recycling infrastructure and represents 15% of the ... in order to remove a large portion of automotive shredder residue before the shredding process i...

Siobhan Barakat; Jill Urbanic

2011-01-01T23:59:59.000Z

124

Making Photosynthetic Biofuel Renewable: Recovering Phosphorus from Residual Biomass J. M. Gifford and P. Westerhoff  

E-Print Network [OSTI]

Making Photosynthetic Biofuel Renewable: Recovering Phosphorus from Residual Biomass J. M. Gifford to global warming. Biofuel from phototrophic microbes like algae and bacteria provides a viable substitute improves biofuel sustainability by refining phosphorus recycling. Biomass Production Residual Biomass

Hall, Sharon J.

125

Bioenergy Production via Microbial Conversion of Residual Oil to Natural Gas  

Science Journals Connector (OSTI)

...Microbiology May 15, 2008 ARTICLE PHYSIOLOGY AND BIOTECHNOLOGY Bioenergy Production via Microbial Conversion of Residual Oil to Natural...alkanes by anaerobic microorganisms. Nature 401: 266-269. Bioenergy production via microbial conversion of residual oil to natural...

Lisa M. Gieg; Kathleen E. Duncan; Joseph M. Suflita

2008-03-31T23:59:59.000Z

126

Techniques for identifying long-range residue correlations in the fifth binding module of LDLR  

E-Print Network [OSTI]

The study of correlations between residues in distal regions of a protein structure may provide insights into the mechanism of protein folding. Such long-range correlations may exist between distant residues that are ...

Lin, Jennifer W

2006-01-01T23:59:59.000Z

127

E-Print Network 3.0 - air-pollution-control residues leaching...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

leaching Search Powered by Explorit Topic List Advanced Search Sample search results for: air-pollution-control residues leaching Page: << < 1 2 3 4 5 > >> 1 Solid Residues from...

128

Residual Strain Distribution in Bent Composite Boiler Tubes  

SciTech Connect (OSTI)

Kraft recovery boilers are typically constructed of carbon steel boiler tubes clad with a corrosion resistant layer, and these composite tubes are bent and welded together to form air port panels which enable the combustion air to enter the boiler. In this paper, the through-thickness residual strain in the carbon steel layer of non-heat-treated and heat-treated composite bent tubes were measured by neutron diffraction techniques and modeled by finite element modeling. The results can be used to optimize material selection and manufacturing processes to prevent stress corrosion and corrosion fatigue cracking in the boiler tubes.

Hubbard, Camden R [ORNL; Gorti, Sarma B [ORNL; Tang, Fei [ORNL

2006-01-01T23:59:59.000Z

129

Sorption Characteristics of Polycyclic Aromatic Hydrocarbons in Aluminum Smelter Residues  

Science Journals Connector (OSTI)

Carbon-normalized distribution coefficients of native PAHs were 2 orders of magnitude higher than expected based on amorphous organic carbon (AOC)/water partitioning, which is in the same order of magnitude as reported literature values for soots and charcoals. ... Desorption experiments using Tenax showed that fresh smelter residues had a relatively large rapidly desorbing fraction of PAH (35?50%), whereas this fraction was strongly reduced (11?16%) in the lagoon and roof dust material. ... To determine the BC levels, the Gelinas modification (15) of the chemo-thermal oxidation (CTO) method by Gustafsson (16) was applied. ...

Gijs D. Breedveld; Émilien Pelletier; Richard St. Louis; Gerard Cornelissen

2007-02-17T23:59:59.000Z

130

Heavy residue properties in intermediate energy nuclear collisions with gold  

SciTech Connect (OSTI)

We have measured the target fragment production cross sections and angular distributions for the interaction of 32, 44 and 93 MeV/nucleon argon, 35 and 43 MeV/nucleon krypton with gold. The fragment isobaric yield distributions, moving frame angular distributions and velocities have been deduced from these data. This fission cross section decreases with increasing projectile energy and the heavy residue cross section increases. The ratio v{sub {parallel}}/v{sub cn} increases approximately linearly with mass removed from the target. 21 refs., 8 figs.

Aleklett, K.; Sihver, L. (Uppsala Univ., Nykoeping (Sweden). Studsvik Neutron Research Lab.); Loveland, W. (Oregon State Univ., Corvallis, OR (USA)); Liljenzin, J.O. (Chalmers Univ. of Tech., Goeteborg (Sweden)); Seaborg, G.T. (Lawrence Berkeley Lab., CA (USA). Nuclear Science Div.)

1990-10-01T23:59:59.000Z

131

Subsidiary Regge Trajectories with Singular Residues. Nucleon-Nucleon Scattering  

Science Journals Connector (OSTI)

It is pointed out that the existence of secondary Regge trajectories with intercepts ?(0) which differ by integers from that of the leading trajectory at t=0, and residues which are singular at that point, is a very general phenomenon which should occur both in the scattering of particles with spin, and in the scattering of particles of unequal mass. Rules are given for determining if such trajectories exist, and for determining their properties. The case of nucleon-nucleon scattering is discussed as an example.

Loyal Durand; III

1967-01-09T23:59:59.000Z

132

Comparative Life Cycle Assessment (LCA) of Construction and Demolition (C&D) Derived Biomass and U.S. Northeast Forest Residuals Gasification for Electricity Production  

Science Journals Connector (OSTI)

Comparative Life Cycle Assessment (LCA) of Construction and Demolition (C&D) Derived Biomass and U.S. Northeast Forest Residuals Gasification for Electricity Production ... Various types of organic waste including (a) agriculture and forestry residues and (b) municipal and industrial wastes (i.e., biodegradable municipal solid waste, plastic waste, construction and demolition (C&D) waste, and sewage sludge) are considered as potential feedstock for bioenergy and chemicals production. ...

Philip Nuss; Kevin H. Gardner; Jenna R. Jambeck

2013-03-15T23:59:59.000Z

133

The prospects of energy forestry and agro-residues in the Lithuania's domestic energy supply  

Science Journals Connector (OSTI)

Recent restructuring of the European agricultural sector should reduce the volume of traditional agricultural production dramatically and withdraw huge areas of arable land from turnover. As a result there is a great potential in breeding short rotation forestry (SRF) and short rotation coppice (SRC) plantations in uncultivated land of good agrarian condition. Lithuania (LIT) has a great potential for expanding local biofuel market and reap the derivative effects in relation to energy and environment on faster growing biomass like SRF, SRC and straw. Energy forestry and agro-residues lessen the environmental impact connected to energy production and consumption and contribute to meeting Lithuania's international obligations for the discharge of greenhouse gasses (CO2, CH4, N2O), sustainability and biodiversity. This review contains practical information on the experience acquired by establishing SRF plantations in LIT as well as utilisation of energy forestry and agro-residues for heat and power. The paper details cultivation and harvesting of SRF, rationality of production, types and applications of industrial combustion systems. It was carefully compiled on the basis of available literature sources, national information and experiences and suggestions from local farmers. Other important issues, including support and incentive mechanisms as well as examples of successful implementation, are also discussed.

Laurencas Raslavi?ius; Vytautas Ku?inskas; Algirdas Jasinskas

2013-01-01T23:59:59.000Z

134

Alternative cooling resource for removing the residual heat of reactor  

SciTech Connect (OSTI)

The Recirculated Cooling Water (RCW) system of a Candu reactor is a closed cooling system which delivers demineralized water to coolers and components in the Service Building, the Reactor Building, and the Turbine Building and the recirculated cooling water is designed to be cooled by the Raw Service Water (RSW). During the period of scheduled outage, the RCW system provides cooling water to the heat exchangers of the Shutdown Cooling System (SDCS) in order to remove the residual heat of the reactor, so the RCW heat exchangers have to operate at all times. This makes it very hard to replace the inlet and outlet valves of the RCW heat exchangers because the replacement work requires the isolation of the RCW. A task force was formed to prepare a plan to substitute the recirculated water with the chilled water system in order to cool the SDCS heat exchangers. A verification test conducted in 2007 proved that alternative cooling was possible for the removal of the residual heat of the reactor and in 2008 the replacement of inlet and outlet valves of the RCW heat exchangers for both Wolsong unit 3 and 4 were successfully completed. (authors)

Park, H. C.; Lee, J. H.; Lee, D. S.; Jung, C. Y.; Choi, K. Y. [Korea Hydro and Nuclear Power Co., Ltd., 260 Naa-ri Yangnam-myeon Gyeongju-si, Gyeonasangbuk-do, 780-815 (Korea, Republic of)

2012-07-01T23:59:59.000Z

135

Estimating Residual Solids Volume In Underground Storage Tanks  

SciTech Connect (OSTI)

The Savannah River Site liquid waste system consists of multiple facilities to safely receive and store legacy radioactive waste, treat, and permanently dispose waste. The large underground storage tanks and associated equipment, known as the 'tank farms', include a complex interconnected transfer system which includes underground transfer pipelines and ancillary equipment to direct the flow of waste. The waste in the tanks is present in three forms: supernatant, sludge, and salt. The supernatant is a multi-component aqueous mixture, while sludge is a gel-like substance which consists of insoluble solids and entrapped supernatant. The waste from these tanks is retrieved and treated as sludge or salt. The high level (radioactive) fraction of the waste is vitrified into a glass waste form, while the low-level waste is immobilized in a cementitious grout waste form called saltstone. Once the waste is retrieved and processed, the tanks are closed via removing the bulk of the waste, chemical cleaning, heel removal, stabilizing remaining residuals with tailored grout formulations and severing/sealing external penetrations. The comprehensive liquid waste disposition system, currently managed by Savannah River Remediation, consists of 1) safe storage and retrieval of the waste as it is prepared for permanent disposition; (2) definition of the waste processing techniques utilized to separate the high-level waste fraction/low-level waste fraction; (3) disposition of LLW in saltstone; (4) disposition of the HLW in glass; and (5) closure state of the facilities, including tanks. This paper focuses on determining the effectiveness of waste removal campaigns through monitoring the volume of residual solids in the waste tanks. Volume estimates of the residual solids are performed by creating a map of the residual solids on the waste tank bottom using video and still digital images. The map is then used to calculate the volume of solids remaining in the waste tank. The ability to accurately determine a volume is a function of the quantity and quality of the waste tank images. Currently, mapping is performed remotely with closed circuit video cameras and still photograph cameras due to the hazardous environment. There are two methods that can be used to create a solids volume map. These methods are: liquid transfer mapping / post transfer mapping and final residual solids mapping. The task is performed during a transfer because the liquid level (which is a known value determined by a level measurement device) is used as a landmark to indicate solids accumulation heights. The post transfer method is primarily utilized after the majority of waste has been removed. This method relies on video and still digital images of the waste tank after the liquid transfer is complete to obtain the relative height of solids across a waste tank in relation to known and usable landmarks within the waste tank (cooling coils, column base plates, etc.). In order to accurately monitor solids over time across various cleaning campaigns, and provide a technical basis to support final waste tank closure, a consistent methodology for volume determination has been developed and implemented at SRS.

Clark, Jason L.; Worthy, S. Jason; Martin, Bruce A.; Tihey, John R.

2014-01-08T23:59:59.000Z

136

Mineral Sequestration Utilizing Industrial By-Products, Residues, and Minerals  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

J. Fauth and Yee Soong J. Fauth and Yee Soong U.S. Department of Energy National Energy Technology Laboratory Pittsburgh PA, 15236-0940 Mineral Sequestration Workshop National Energy Technology Laboratory August 8, 2001 Mineral Sequestration Utilizing Industrial By-Products, Residues, and Minerals Mineral Sequestration Workshop, U.S. Department of Energy, NETL, August 8, 2001 Overview * Introduction - Objective - Goals - NETL Facilities * Effect of Solution Chemistry on Carbonation Efficiency - Buffered Solution + NaCl - Buffered Solution + MEA * Effect of Pretreatment on Carbonation Efficiency - Thermal Treatments - Chemical Treatments * Carbonation Reaction with Ultramafic Minerals - Serpentine - Olivine Mineral Sequestration Workshop, U.S. Department of Energy, NETL, August 8, 2001 Overview * Carbonation Reaction with Industrial By-products

137

Residual energy in magnetohydrodynamic turbulence and in the solar wind  

E-Print Network [OSTI]

Recent observations indicate that kinetic and magnetic energies are not in equipartition in the solar wind turbulence. Rather, magnetic fluctuations are more energetic and have somewhat steeper energy spectrum compared to the velocity fluctuations. This leads to the presence of the so-called residual energy E_r=E_v-E_b in the inertial interval of turbulence. This puzzling effect is addressed in the present paper in the framework of weak turbulence theory. Using a simple model of weakly colliding Alfv\\'en waves, we demonstrate that the kinetic-magnetic equipartition indeed gets broken as a result of nonlinear interaction of Alfv\\'en waves. We establish that magnetic energy is indeed generated more efficiently as a result of these interactions, which proposes an explanation for the solar wind observations.

Stanislav Boldyrev; Jean Carlos Perez; Vladimir Zhdankin

2011-08-30T23:59:59.000Z

138

Quantification of residual stress from photonic signatures of fused silica  

SciTech Connect (OSTI)

A commercially available grey-field polariscope (GFP) instrument for photoelastic examination is used to assess impact damage inflicted upon the outer-most pane of Space Shuttle windows made from fused silica. A method and apparatus for calibration of the stress-optic coefficient using four-point bending is discussed. The results are validated on known material (acrylic) and are found to agree with literature values to within 6%. The calibration procedure is then applied to fused-silica specimens and the stress-optic coefficient is determined to be 2.43 ± 0.54 × 10{sup ?12} Pa{sup ?1}. Fused silica specimens containing impacts artificially made at NASA’s Hypervelocity Impact Technology Facility (HIT-F), to simulate damage typical during space flight, are examined. The damage sites are cored from fused silica window carcasses and examined with the GFP. The calibrated GFP measurements of residual stress patterns surrounding the damage sites are presented.

Cramer, K. Elliott; Yost, William T. [NASA Langley Research Center, Hampton, VA 23681 (United States); Hayward, Maurice [College of William and Mary, Williamsburg, VA 23185 (United States)

2014-02-18T23:59:59.000Z

139

Evaluation of the residue from microset on various metal surfaces.  

SciTech Connect (OSTI)

Fast-curing impression materials are sometimes used to cast negative-mold replications of physical defects on material surfaces. The negative-mold impressions can then be used for further measurements to record the nature of the defect. These impression materials have been designed to cure quickly, and with very low adhesion, so that they can be easily removed from the surface leaving little residual contamination. Unfortunately, some contaminant is retained by the substrate material. This investigation seeks to identify the composition and quantity of the remaining material upon removal of Microset Synthetic Rubber Replicating Compound from several material surfaces. Coe-Flex was used as a relative comparison to Microset. On fifteen different substrate materials the Microset leaves no visible trace of contaminant, however, X-ray photoelectron spectroscopy shows evidence of a thin silicone-based contaminant film of approximately 2 nm thickness.

Brumbach, Michael Todd

2011-04-01T23:59:59.000Z

140

Residual Stress Determination for A Ferritic Steel Weld Plate  

SciTech Connect (OSTI)

The primary objective of this experiment is to demonstrate the capability of neutron diffraction technique to reproducibly map residual strains in a ferritic steel weld. The objective includes the identification of corrections for variations in metal composition due to the welding process which produces changes in lattice parameter that are not due to mechanical effects. The second objective is to develop and demonstrate a best practice for neutron diffraction strain mapping of steel welds. The appropriate coordinate system for the measurement of a weld, which is strongly distorted from planar geometry, has to be defined. The coordinate system is important in determining the procedures for mounting and positioning of the weld so that mapping details, especially in regions of high gradients, can be conveniently inter-compared between laboratories.

Wang, D.-Q.; Hubbard, C.R.; Spooner, S.

1999-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Residue temperatures in intermediate energy nucleus-nucleus collisions  

SciTech Connect (OSTI)

With an improved Boltzmann-Uehling-Uhlenbeck (BUU) model, we have investigated the reaction dynamics leading to the thermal freeezout for [sup 40]Ar+[sup 124]Sn collisions. Several criteria are assessed for defining the proper thermal freezout time which separates preequilibrium processes from equilbrium processes. One of these criteria, the time dependence of the thermal excitation energy, provides consistent results for defining the thermal freezeout. The other two criteria, the emission rate of nucleons and the quadrupole moment of the momentum distributions, do not consistently provide accurate freezeout times due to the existence of long time scale collective vibrations. The predicted values for the excitation energies and temperatures, obtained assuming Fermi gas level densities, are quite sensitive to the equation of state and the impact parameter. Surprisingly, both the thermal excitation energies and the residue temperatures, in the limit of a large ensemble of parallel collisions, show little sensitivity to the in-medium nucleon-nucleon cross section.

Xu, H.M.; Lynch, W.G.; Danielewicz, P. (National Superconducting Cyclotron Laboratory and Department of Physics, Michigan State University, East Lansing, Michigan 48824 (United States) Cyclotron Institute, Texas A M University, College Station, Texas 77843 (United States))

1994-09-01T23:59:59.000Z

142

E-Print Network 3.0 - automobile shredder residue Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: automobile shredder residue Page: << < 1 2 3 4 5 > >> 1 NASHVILLE INCINERATOR PERFORMANCE TESTS...

143

Recycling waste polymers from automotive shredder residue (ASR); application in iron making.  

E-Print Network [OSTI]

??An investigation was performed on characterisation of automotive shredder residue which resulted in application of its polymeric fraction as a substitute for coke, as reducing… (more)

Fahandej Sadi, Seyed Habib

2013-01-01T23:59:59.000Z

144

Methods of analysis modified size exchange chromatography method for analysis of heavy oil residues  

Science Journals Connector (OSTI)

A modified size exchange chromatography method is used to obtain molecular weight distributions, average molecular weight, and other characteristics of heavy oil residues: coal asphalt, petroleum asphalt, vacu...

Changming Zhang; Adnan Alhajji…

2012-09-01T23:59:59.000Z

145

An Experimental Investigation into Additive Manufacturing-Induced Residual Stresses in 316L Stainless Steel  

Science Journals Connector (OSTI)

Additive manufacturing (AM) technology provides unique opportunities for...i.e., neutron diffraction). Good agreement between the two measurement techniques is observed. Furthermore, a reduction in residual stres...

Amanda S. Wu; Donald W. Brown; Mukul Kumar…

2014-12-01T23:59:59.000Z

146

A SAFEGUARDED DUAL WEIGHTED RESIDUAL METHOD RICARDO H. NOCHETTO, ANDREAS VEESER, AND MARCO VERANI  

E-Print Network [OSTI]

A SAFEGUARDED DUAL WEIGHTED RESIDUAL METHOD RICARDO H. NOCHETTO, ANDREAS VEESER, AND MARCO VERANI safeguarded by additional asymptotically higher order a posteriori terms. In particular, the enhanced

Nochetto, Ricardo H.

147

E-Print Network 3.0 - acs residual ischemic Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Sample search results for: acs residual ischemic Page: << < 1 2 3 4 5 > >> 1 Brain Research 961 (2003) 2231 www.elsevier.comlocatebrainres Summary: further...

148

E-Print Network 3.0 - acid residues required Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering, Columbia University Collection: Engineering ; Biology and Medicine 13 Protein folding with stochastic L-systems Gemma Danks1 Summary: 70 amino acid residues to 1000s...

149

E-Print Network 3.0 - acid residues determine Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering, Columbia University Collection: Engineering ; Biology and Medicine 14 Protein folding with stochastic L-systems Gemma Danks1 Summary: 70 amino acid residues to 1000s...

150

Residual Stress Evaluation of Materials Manufactured by High-Energy Process  

Science Journals Connector (OSTI)

This paper presents several applications of the step by step hole drillling method for measuring residual stress distribution introduced in different components manufactured by the high energy process.

J. F. Flavenot; J. Lu

1990-01-01T23:59:59.000Z

151

The preparation of a cabbage candidate reference material to be certified for residues of agrochemicals  

Science Journals Connector (OSTI)

A new cabbage candidate reference material has been prepared for the determination of residues of agrochemicals. The cabbage was grown with deliberate application...

Rolf Zeisler; Vladimir Strachnov…

152

E-Print Network 3.0 - africa quantifying residual Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: africa quantifying residual Page: << < 1 2 3 4 5 > >> 1 Satellite observations of the...

153

"Table A10. Total Consumption of LPG, Distillate Fuel Oil, and Residual Fuel"  

U.S. Energy Information Administration (EIA) Indexed Site

0. Total Consumption of LPG, Distillate Fuel Oil, and Residual Fuel" 0. Total Consumption of LPG, Distillate Fuel Oil, and Residual Fuel" " Oil for Selected Purposes by Census Region and Economic Characteristics of the" " Establishment, 1991" " (Estimates in Barrels per Day)" ,,,," Inputs for Heat",,," Primary Consumption" " "," Primary Consumption for all Purposes",,," Power, and Generation of Electricity",,," for Nonfuel Purposes",,,"RSE" ," ------------------------------------",,," ------------------------------------",,," -------------------------------",,,"Row" "Economic Characteristics(a)","LPG","Distillate(b)","Residual","LPG","Distillate(b)","Residual","LPG","Distillate(b)","Residual","Factors"

154

Effect of crop residue harvest on long-term crop yield, soil erosion, and carbon balance: tradeoffs for a sustainable bioenergy feedstock  

SciTech Connect (OSTI)

Agricultural residues are a potential feedstock for bioenergy production, if residue harvest can be done sustainably. The relationship between crop residue harvest, soil erosion, crop yield and carbon balance was modeled with the Erosion Productivity Impact Calculator/ Environment Policy Integrated Climate (EPIC) using a factorial design. Four crop rotations (winter wheat [Triticum aestivum (L.)] – sunflower [Helianthus annuus]; spring wheat [Triticum aestivum (L.)] – canola [Brassica napus]; corn [Zea mays L.] – soybean [Glycine max (L.) Merr.]; and cotton [Gossypium hirsutum] – peanut [Arachis hypogaea]) were simulated at four US locations each, under different topographies (0-10% slope), and management practices [crop residue removal rates (0-75%), conservation practices (no till, contour cropping, strip cropping, terracing)].

Gregg, Jay S.; Izaurralde, Roberto C.

2010-08-26T23:59:59.000Z

155

Gas Generation Test Support for Transportation and Storage of Plutonium Residue Materials - Part 1: Rocky Flats Sand, Slag, and Crucible Residues  

SciTech Connect (OSTI)

The purpose of this report is to present experimental results that can be used to establish one segment of the safety basis for transportation and storage of plutonium residue materials.

Livingston, R.R.

1999-08-24T23:59:59.000Z

156

POST-OPERATIONAL TREATMENT OF RESIDUAL NA COOLLANT IN EBR-2 USING CARBONATION  

SciTech Connect (OSTI)

At the end of 2002, the Experimental Breeder Reactor Two (EBR-II) facility became a U.S. Resource Conservation and Recovery Act (RCRA) permitted site, and the RCRA permit1 compelled further treatment of the residual sodium in order to convert it into a less reactive chemical form and remove the by-products from the facility, so that a state of RCRA 'closure' for the facility may be achieved (42 U.S.C. 6901-6992k, 2002). In response to this regulatory driver, and in recognition of project budgetary and safety constraints, it was decided to treat the residual sodium in the EBR-II primary and secondary sodium systems using a process known as 'carbonation.' In early EBR-II post-operation documentation, this process is also called 'passivation.' In the carbonation process (Sherman and Henslee, 2005), the system containing residual sodium is flushed with humidified carbon dioxide (CO{sub 2}). The water vapor in the flush gas reacts with residual sodium to form sodium hydroxide (NaOH), and the CO{sub 2} in the flush gas reacts with the newly formed NaOH to make sodium bicarbonate (NaHCO{sub 3}). Hydrogen gas (H{sub 2}) is produced as a by-product. The chemical reactions occur at the exposed surface of the residual sodium. The NaHCO{sub 3} layer that forms is porous, and humidified carbon dioxide can penetrate the NaHCO{sub 3} layer to continue reacting residual sodium underneath. The rate of reaction is controlled by the thickness of the NaHCO{sub 3} surface layer, the moisture input rate, and the residual sodium exposed surface area. At the end of carbonation, approximately 780 liters of residual sodium in the EBR-II primary tank ({approx}70% of original inventory), and just under 190 liters of residual sodium in the EBR-II secondary sodium system ({approx}50% of original inventory), were converted into NaHCO{sub 3}. No bare surfaces of residual sodium remained after treatment, and all remaining residual sodium deposits are covered by a layer of NaHCO{sub 3}. From a safety standpoint, the inventory of residual sodium in these systems was greatly reduced by using the carbonation process. From a regulatory standpoint, the process was not able to achieve deactivation of all residual sodium, and other more aggressive measures will be needed if the remaining residual sodium must also be deactivated to meet the requirements of the existing environmental permit. This chapter provides a project history and technical summary of the carbonation of EBR-II residual sodium. Options for future treatment are also discussed.

Sherman, S.; Knight, C.

2011-03-08T23:59:59.000Z

157

Modelling of a downdraft gasifier fed by agricultural residues  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Development of software for downdraft gasification simulation. Black-Right-Pointing-Pointer Prediction of the syngas concentration. Black-Right-Pointing-Pointer Prediction of the syngas heating value. Black-Right-Pointing-Pointer Investigation of the temperature effect in reduction zone in syngas concentration. - Abstract: A non-stoichiometric model for a downdraft gasifier was developed in order to simulate the overall gasification process. Mass and energy balances of the gasifier were calculated and the composition of produced syngas was predicted. The capacity of the modeled gasifier was assumed to be 0.5 MW, with an Equivalence Ratio (EQ) of 0.45. The model incorporates the chemical reactions and species involved, while it starts by selecting all species containing C, H, and O, or any other dominant elements. Olive wood, miscanthus and cardoon were tested in the formulated model for a temperature range of 800-1200 Degree-Sign C, in order to examine the syngas composition and the moisture impact on the supplied fuel. Model results were then used in order to design an olive wood gasification reactor.

Antonopoulos, I.-S., E-mail: jantonop@aix.meng.auth.gr [Laboratory of Heat Transfer and Environmental Engineering, Department of Mechanical Engineering, Aristotle University of Thessaloniki, Box 483, GR-54124, Thessaloniki (Greece); Karagiannidis, A.; Gkouletsos, A.; Perkoulidis, G. [Laboratory of Heat Transfer and Environmental Engineering, Department of Mechanical Engineering, Aristotle University of Thessaloniki, Box 483, GR-54124, Thessaloniki (Greece)

2012-04-15T23:59:59.000Z

158

Global bioenergy potential from high-lignin agricultural residue  

Science Journals Connector (OSTI)

...addition to ash, tar condensation arises from biomass...volatile tars by using water scrubbers...the possibility of recovery and recycling...access to the basic water, sewage, transport...results in degraded atmospheric quality because...projections of regional water scarcity, climate change...

Venugopal Mendu; Tom Shearin; J. Elliott Campbell; Jr; Jozsef Stork; Jungho Jae; Mark Crocker; George Huber; Seth DeBolt

2012-01-01T23:59:59.000Z

159

Global bioenergy potential from high-lignin agricultural residue  

Science Journals Connector (OSTI)

...commodities as the proportion of each grid cell. Energy content of the drupe endocarp...virgatum), 18.5 MJ/kg; and hybrid poplar (Populus sp.) 19.3 MJ/kg...per person. The geospatial grid display uses 10 quantiles...developing decentralized energy infrastructure requires capital investment...

Venugopal Mendu; Tom Shearin; J. Elliott Campbell; Jr; Jozsef Stork; Jungho Jae; Mark Crocker; George Huber; Seth DeBolt

2012-01-01T23:59:59.000Z

160

Global bioenergy potential from high-lignin agricultural residue  

Science Journals Connector (OSTI)

...Ridge Natl Lab , Oak Ridge, TN ) Available at http://www1.eere.energy.gov/industry/distributedenergy...Oak Ridge Natl Lab, Oak Ridge, TN). http://www1.eere.energy.gov/industry/distributedenergy/pdfs/chp...

Venugopal Mendu; Tom Shearin; J. Elliott Campbell; Jr; Jozsef Stork; Jungho Jae; Mark Crocker; George Huber; Seth DeBolt

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Global bioenergy potential from high-lignin agricultural residue  

Science Journals Connector (OSTI)

...The geospatial grid display uses...proportion of each grid cell. Energy content of the drupe endocarp...MJ/kg; and hybrid poplar (Populus...The geospatial grid display uses...comparative energy portfolio contribution...decentralized energy infrastructure requires capital...

Venugopal Mendu; Tom Shearin; J. Elliott Campbell; Jr; Jozsef Stork; Jungho Jae; Mark Crocker; George Huber; Seth DeBolt

2012-01-01T23:59:59.000Z

162

Global bioenergy potential from high-lignin agricultural residue  

Science Journals Connector (OSTI)

...A proper treatment of the wastewater...gasification system has been...processing plants or urban...Either the waste stream from...pruning, weed control, pesticide...1999 ) Integrated biomass...Gasification systems . Energy Convers...Physico-chemical treatment of tar-containing...gasification plants . World Acad...farming systems and socio-economic...service by waste collection . Municipal...

Venugopal Mendu; Tom Shearin; J. Elliott Campbell; Jr; Jozsef Stork; Jungho Jae; Mark Crocker; George Huber; Seth DeBolt

2012-01-01T23:59:59.000Z

163

Global bioenergy potential from high-lignin agricultural residue  

Science Journals Connector (OSTI)

...net greenhouse-gas flux for bioenergy...cycle (IBGCC) power generation concept: The...Mill Wastes-Fired Power Generation Systems and...Waste IX (Inst Gas Technol, Chicago...cycle (IBGCC) power generation concept: The...

Venugopal Mendu; Tom Shearin; J. Elliott Campbell; Jr; Jozsef Stork; Jungho Jae; Mark Crocker; George Huber; Seth DeBolt

2012-01-01T23:59:59.000Z

164

Global bioenergy potential from high-lignin agricultural residue  

Science Journals Connector (OSTI)

...Huber Seth DeBolt a Department of Horticulture and d Center for Applied Energy Research...secure the supply of electricity for lighting, cooking, and other...allowances exist. | Department of Horticulture, University of Kentucky, Lexington...

Venugopal Mendu; Tom Shearin; J. Elliott Campbell; Jr; Jozsef Stork; Jungho Jae; Mark Crocker; George Huber; Seth DeBolt

2012-01-01T23:59:59.000Z

165

Global bioenergy potential from high-lignin agricultural residue  

Science Journals Connector (OSTI)

...production systems has a global bioenergy production potential of 4.1...efficiency (15–40%) of the bioenergy into actual electricity...Costa Rica, Chile, and Argentina (coconut, olive, mango...2000 (17, 18). Modeling Bioenergy Based on Geospatial Data Shows...

Venugopal Mendu; Tom Shearin; J. Elliott Campbell; Jr; Jozsef Stork; Jungho Jae; Mark Crocker; George Huber; Seth DeBolt

2012-01-01T23:59:59.000Z

166

Global bioenergy potential from high-lignin agricultural residue  

Science Journals Connector (OSTI)

...black walnut nut industry, nut markets...by means of gasification process of...Agriculturaland wood waste potentials...Pilot-Plant gasification of olive stone...Bbiomass and Waste IX (Inst Gas...Integrated biomass gasification combined cycle...energy.gov/industry/distributedenergy...

Venugopal Mendu; Tom Shearin; J. Elliott Campbell; Jr; Jozsef Stork; Jungho Jae; Mark Crocker; George Huber; Seth DeBolt

2012-01-01T23:59:59.000Z

167

Continued development of the residue baler. Final report  

SciTech Connect (OSTI)

The baling concept discussed in this report has evolved from work started in 1975. The objective of this activity was to develop a method for transporting entire above ground portions of both pine and hardwood stems to a mill or centralized processing point in a form that was compatible with truck, trailer, rail and barge hauls and with sufficient bulk density to optimize load sizes on the various carriers while expending a minimum amount of capital and energy in the woods operations. The year's work resulted in the baling concept and a prototype baler being tested under a wide variety of field conditions material types and operating scenarios. The work in the Pacific Northwest demonstrated that baling offers a means of preparing forest residues for transport which results in a near maximum solid wood content in a load. The reworking of the hydraulic circuits significantly reduced the cycle time on the prototype without increasing the power requirements. The installation of the wire feed assembly moved the development of an automatic banding and tying system one step closer. Both sets of field trials also pointed out that a true field demonstration of the commercial ability of the baline concept will have to await the construction of a second generation prototype producing a larger bale and designed to accept several different infeed types. 7 figures, 3 tables.

Stuart, W.B.

1984-01-01T23:59:59.000Z

168

Catalytic gasification of automotive shredder residues with hydrogen generation  

Science Journals Connector (OSTI)

Hydrogen is a clean and new energy carrier to generate power through the Proton exchange membrane fuel cell (PEMFC) system. Hydrogen can be effectively turned out through the catalytic gasification of organic material such as automotive shredder residues (ASR). The main objective of this manuscript is to present an analysis of the catalytic gasification of ASR for the generation of high-purity hydrogen in a lab-scale fixed-bed downdraft gasifier using 15 wt.% NiO/Al2O3 catalysts at 760–900 K. In the catalytic gasification process, reduction of Ni(II) catalyst into Ni(0) has been confirmed through XANES spectra and consequently EXAFS data shows that the central Ni atoms have Ni–O and Ni–Ni bonds with bond distances of 2.03 ± 0.05 and 2.46 ± 0.05 Å, respectively. ASR is partially oxidized and ultimately converts into hydrogen rich syngas (CO and H2) and increases of the reaction temperature are favored the generation of hydrogen with decomposition of the CO. As well, approximately 220 kg h?1 of ASR would be catalytically gasified at 760–900 K and 46.2 atm with the reactor volume 0.27 m3 to obtain approximately 3.42 × 105 kcal h?1 of thermal energy during over 87% syngas generation with the generation of 100 kW electric powers.

Kuen-Song Lin; Sujan Chowdhury; Ze-Ping Wang

2010-01-01T23:59:59.000Z

169

Analysis of lead content in automotive shredder residue (ASR)  

Science Journals Connector (OSTI)

Automotive shredder residue (ASR) is a very heterogeneous waste, which could have a very high metal content on finest fractions ?  < 6 mm produced by the shredding of end of live vehicles. The approval of Directive 2000/53/EC and its transposition to the European Union member states requires an analytical technique for in-situ checking of the content of some metals in ASR wastes. The objective of this study is the evaluation of total Pb content in the different fractions using a rapid measurement method to easily accomplish the current legislation. An experimental Energy Dispersive X-ray Fluorescence (EDXRF) spectrometer with tri-axial geometry was used to analyse the ASR in order to test the feasibility of this analytical technique. Likewise, a correction of the intensities by the incoherent scattering (Compton) radiation was made to compensate the matrix effects. The results show that values in the smaller fractions are bigger (11,600 mg kg?1 in the fraction <125 ?m) than in the coarser fractions (4600 mg kg?1 in the fraction between 2 and 6 mm) and that such type of instrumentation enables a fast measurement with a limit of detection of 1.1 mg kg?1 for 1000 s measurement).

Oscar Gonzalez-Fernandez; Sofia Pessanha; Ignacio Queralt; Maria Luisa Carvalho

2009-01-01T23:59:59.000Z

170

Valorization of automotive shredder residue in building materials  

Science Journals Connector (OSTI)

Every year in EU nations, it is estimated that 3 million tonnes of automotive shredder residue (ASR) are generated. Half of the ASR is composed of rubber, textiles and plastics, which can be either transformed into alternative fuel or recycled. The second half, which is landfilled, is incombustible and has not yet been valorized. This waste contains 30% organic matter, as well as inorganic compounds such as quartz, calcite, magnetite, hematite, and anhydrite. It is also very rich in zinc (1–3.5%) and lead (0.7–3.3%). These elements are powerful retarders of ordinary Portland cement. For this reason, two ways of processing of this waste have been investigated: (1) transformation into aggregates after a thermal treatment followed by a chemical treatment or (2) directly into concrete with the use of calcium sulfoaluminate cement. This second way is especially very interesting for engineers and scientists. As established by leaching tests, zinc and lead are integrated and fixed in the structure of ettringite, the main hydration product of calcium sulfoaluminate cement. Therefore, it is possible to produce concrete for some applications including road construction from this currently landfilled “waste” (i.e., the ASR is shown to be useful recyclable material that can be converted into an environmentally friendly “green” concrete).

J. Péra; J. Ambroise; M. Chabannet

2004-01-01T23:59:59.000Z

171

Auto shredder residue recycling: Mechanical separation and pyrolysis  

Science Journals Connector (OSTI)

Directive 2000/53/EC sets a goal of 85% material recycling from end-of-life vehicles (ELVs) by the end of 2015. The current ELV recycling rate is around 80%, while the remaining waste is called automotive shredder residue (ASR), or car fluff. In Europe, this is mainly landfilled because it is extremely heterogeneous and often polluted with car fluids. Despite technical difficulties, in the coming years it will be necessary to recover materials from car fluff in order to meet the ELV Directive requirement. This study deals with ASR pretreatment and pyrolysis, and aims to determine whether the ELV material recycling target may be achieved by car fluff mechanical separation followed by pyrolysis with a bench scale reactor. Results show that flotation followed by pyrolysis of the light, organic fraction may be a suitable ASR recycling technique if the oil can be further refined and used as a chemical. Moreover, metals are liberated during thermal cracking and can be easily separated from the pyrolysis char, amounting to roughly 5% in mass. Lastly, pyrolysis can be a good starting point from a “waste-to-chemicals” perspective, but further research should be done with a focus on oil and gas refining, in order both to make products suitable for the chemical industry and to render the whole recycling process economically feasible.

Alessandro Santini; Fabrizio Passarini; Ivano Vassura; David Serrano; Javier Dufour; Luciano Morselli

2012-01-01T23:59:59.000Z

172

Production of aggregate from non-metallic automotive shredder residues  

Science Journals Connector (OSTI)

In this paper, the results of an experimentation on the production of granules suitable to be used as aggregates in cementitious or asphalt mixes are presented and discussed. The granules were obtained by granulating the non-metallic fraction of automotive shredder residues. In a preliminary separation step the fluff fraction containing mainly inert and non-metallic materials was sieved and analyzed for the metal content. In the following granulation step, the sieved fraction was mixed with binding materials, fly ash and a densifier agent, to produce granules of 5–30 mm of diameter and up to 1400 kg/m3 of specific weight. The granulation was carried out at room temperature in a rotating tank. Concrete samples prepared using as aggregates the produced granules showed a specific weight up to 1800 kg/m3 and a compressive strength up to about 55% of reference samples prepared using a calcareous aggregate, depending on the fluff content of the mixes, and on the nature of the binder and of the other components used.

Vito Alunno Rossetti; Luca Di Palma; Franco Medici

2006-01-01T23:59:59.000Z

173

Recovery of flexible polyurethane foam from shredder residue.  

SciTech Connect (OSTI)

Argonne National Laboratory has developed a patented, continuous process for the recovery of flexible polyurethane foam (PUF) from auto shredder residue (ASR). To test the process, Argonne researchers conceived of, designed, and built a continuous foam washing and drying system that was pilot-tested at a shredder facility for six months. Economic analysis of the process, using manufacturers' quotes and operating data from Argonne's pilot plant, indicates a payback of less than two years for a plant producing about 1,000 ton/yr of foam. Samples of clean foam were shipped to three major foam reprocessors; all three indicated that the quality of the PUF recovered by the Argonne process met their requirements. Tests of the recovered foam by an independent testing laboratory showed that the recycled foam met the specifications for several automotive applications, including carpet padding, headliner, and sound-suppression support materials. Recovery of foam reduces the mass and the volume of material going to the landfill by about 5% and 30%, respectively. Annually, recovery will save about 1.2 x 10{sup 12} Btu of energy, cut the amount of solid waste being landfilled by about 150,000 tons, and eliminate the emission of about 250 tons of volatile organic compounds (VOCs) into the air.

Daniels, E. J.; Jody, b. J.

1999-06-29T23:59:59.000Z

174

Experimental program to assess the effect of residual stresses on fracture behavior  

SciTech Connect (OSTI)

A series of ``model material`` tests were previously undertaken on aluminium alloy tensile loaded plate specimens containing a central through-thickness crack to investigate the effect of in-plane self-balancing residual stresses on ductile tearing behavior in the context of the R6 methodology. Residual stresses were generated by an electron-beam welding method and this resulted in stress levels of the order of 1/3 yield stress in the test specimens. Provisional results of these tests were presented at the 1993 ASME PVP conference. The value of 1/3 yield is commonly considered as the level of residual stress for fracture assessments of structural components which have been stress relieved. For non stress relieved components, higher values of residual stress need to be considered. A new design of test specimen has therefore been developed. Further ductile tearing experiments have been undertaken on this new design of specimen. The results obtained from these, and the previous tests, have quantitatively demonstrated the influence of residual stress on fracture behavior in terms of both the level of residual stress and the region under consideration on the R6 failure assessment diagram. The general conservatism of the current R6 method for dealing with residual stresses has been confirmed for the type of geometry, loading and residual stress field under consideration.

Sharples, J.K.; Sanderson, D.J.; Bowdler, B.R.; Wightman, A.P. [AEA Technology, Risley (United Kingdom). Technical Services Division; Ainsworth, R.A. [Nuclear Electric plc, Berkeley (United Kingdom)

1995-11-01T23:59:59.000Z

175

Residual stress and self-assembly during deposition and etching of MEMS  

E-Print Network [OSTI]

with no residual stresses. Residual stresses are investigated as a means of self-assembling MEMS and NEMS during material deposition and etching. The assembly of two components is considered: one component is subjected to deposition or etching and is modeled...

Mani, Sathyanarayanan

2012-06-07T23:59:59.000Z

176

Residual Magnetic Flux Leakage: A Possible Tool for Studying Pipeline Defects  

E-Print Network [OSTI]

Residual Magnetic Flux Leakage: A Possible Tool for Studying Pipeline Defects Vijay Babbar1 weaker flux signals. KEY WORDS: Magnetic flux leakage; residual magnetization; pipeline defects; pipeline pipelines, which may develop defects such as corrosion pits as they age in service.(1) Under the ef- fect

Clapham, Lynann

177

U.S. Department of Energy Guidelines for Residual Radioactive Material at  

Broader source: Energy.gov (indexed) [DOE]

U.S. Department of Energy Guidelines for Residual Radioactive U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites (Revision 2, March 1987) U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites (Revision 2, March 1987) More Documents & Publications

178

Vast Energy Resource in Residual Oil Zones, FE Study Says | Department of  

Broader source: Energy.gov (indexed) [DOE]

Vast Energy Resource in Residual Oil Zones, FE Study Says Vast Energy Resource in Residual Oil Zones, FE Study Says Vast Energy Resource in Residual Oil Zones, FE Study Says July 20, 2012 - 1:00pm Addthis Washington, DC - Billions of barrels of oil that could increase domestic supply, help reduce imports, and increase U.S. energy security may be potentially recoverable from residual oil zones, according to initial findings from a study supported by the U.S. Department of Energy's Office of Fossil Energy (FE). The recently completed study, conducted by researchers at the University of Texas-Permian Basin (UTPB), is one of several FE-supported research projects providing insight that will help tap this valuable-but-overlooked resource. Residual oil zones, called ROZs, are areas of immobile oil found below the oil-water contact of a reservoir. ROZs are similar to reservoirs in the

179

U.S. Department of Energy Guidelines for Residual Radioactive Material at  

Broader source: Energy.gov (indexed) [DOE]

U.S. Department of Energy Guidelines for Residual Radioactive U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites (Revision 2, March 1987) U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites (Revision 2, March 1987) More Documents & Publications

180

Model for Gasification of Residual Fuels from Petroleum Refineries Using the Equation Oriented (EO) Approach  

Science Journals Connector (OSTI)

An attractive way to use residual fuels from petroleum refineries (vacuum residue and petcoke) is their gasification to produce syngas, which contains mainly H2, CO and small quantities of CH4, CO2, as well as nitrogen and sulfur compounds. ... Vacuum residue and petroleum coke (petcoke) are, respectively, heavy liquid and solid byproducts from crude oil refining, they are often used as fuel in boilers for power production, natural gas has been more commonly used in the past few years in power generation; reducing the market for both vacuum residue and petcoke. ... Regarding petroleum refinery residuals Uson et al.(1) developed a model for cogasification of coal, petcoke and biomass, based on reaction kinetics. ...

Jorge E. Marin-Sanchez; Miguel A. Rodriguez-Toral

2010-07-29T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Experimental determination of residual stress by neutron diffraction in a boiling water reactor core shroud  

SciTech Connect (OSTI)

Residual strains in a 51 mm (2-inch) thick 304L stainless steel plate have been measured by neutron diffraction and interpreted in terms of residual stress. The plate, measuring (300 mm) in area, was removed from a 6m (20-ft.) diameter unirradiated boiling water reactor core shroud, and included a multiple-pass horizontal weld which joined two of the cylindrical shells which comprise the core shroud. Residual stress mapping was undertaken in the heat affected zone, concentrating on the outside half of the plate thickness. Variations in residual stresses with location appeared consistent with trends expected from finite element calculations, considering that a large fraction of the residual hoop stress was released upon removal of the plate from the core shroud cylinder.

Payzant, A.; Spooner, S.; Zhu, Xiaojing; Hubbard, C.R. [and others

1996-06-01T23:59:59.000Z

182

EA-1120: Solid Residues Treatment, Repackaging and Storage at the Rocky  

Broader source: Energy.gov (indexed) [DOE]

0: Solid Residues Treatment, Repackaging and Storage at the 0: Solid Residues Treatment, Repackaging and Storage at the Rocky Flats Environmental Technology Site, Golden, Colorado EA-1120: Solid Residues Treatment, Repackaging and Storage at the Rocky Flats Environmental Technology Site, Golden, Colorado SUMMARY This EA evaluates the environmental impacts of the proposal to stabilize, if necessary, and/or repackage the residues for safe interim storage at the Site while awaiting the completion and opening of a suitable repository to which they would be shipped for disposal from the U.S. Department of Energy Rocky Flats Environmental Technology Site in Golden, Colorado. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD April 1, 1996 EA-1120: Finding of No Significant Impact Solid Residues Treatment, Repackaging and Storage at the Rocky Flats

183

Tidal Residual Eddies and their Effect on Water Exchange in Puget Sound  

SciTech Connect (OSTI)

Tidal residual eddies are one of the important hydrodynamic features in tidally dominant estuaries and coastal bays, and they could have significant effects on water exchange in a tidal system. This paper presents a modeling study of tides and tidal residual eddies in Puget Sound, a tidally dominant fjord-like estuary in the Pacific Northwest coast, using a three-dimensional finite-volume coastal ocean model. Mechanisms of vorticity generation and asymmetric distribution patterns around an island/headland were analyzed using the dynamic vorticity transfer approach and numerical experiments. Model results of Puget Sound show that a number of large twin tidal residual eddies exist in the Admiralty Inlet because of the presence of major headlands in the inlet. Simulated residual vorticities near the major headlands indicate that the clockwise tidal residual eddy (negative vorticity) is generally stronger than the anticlockwise eddy (positive vorticity) because of the effect of Coriolis force. The effect of tidal residual eddies on water exchange in Puget Sound and its sub-basins were evaluated by simulations of dye transport. It was found that the strong transverse variability of residual currents in the Admiralty Inlet results in a dominant seaward transport along the eastern shore and a dominant landward transport along the western shore of the Inlet. A similar transport pattern in Hood Canal is caused by the presence of tidal residual eddies near the entrance of the canal. Model results show that tidal residual currents in Whidbey Basin are small in comparison to other sub-basins. A large clockwise residual circulation is formed around Vashon Island near entrance of South Sound, which can potentially constrain the water exchange between the Central Basin and South Sound.

Yang, Zhaoqing; Wang, Taiping

2013-08-30T23:59:59.000Z

184

Residual turbulence from velocity shear stabilized interchange instabilities  

SciTech Connect (OSTI)

The stabilizing effect of velocity shear on the macroscopic, broad bandwidth, ideal interchange instability is studied in linear and nonlinear regimes. A 2D dissipative magnetohydrodynamic (MHD) code is employed to simulate the system. For a given flow shear, V Prime , linear growth rates are shown to be suppressed to below the shear-free level at both the small and large wavelengths. With increasing V Prime , the unstable band in wavenumber-space shrinks so that the peak growth results for modes that correspond to relatively high wavenumbers, on the scale of the density gradient. In the nonlinear turbulent steady state, a similar turbulent spectrum obtains, and the convection cells are roughly circular. In addition, the density fluctuation level and the degree of flattening of the initial inverted density profile are found to decrease as V Prime increases; in fact, unstable modes are almost completely stabilized and the density profile reverts to laminar when V Prime is a few times the classic interchange growth rate. Moreover, the turbulent particle flux diminishes with increasing velocity shear such that all the flux is carried by the classical diffusive flux in the asymptotic limit. The simulations are compared with measurements of magnetic fluctuations from the Maryland Centrifugal Experiment, MCX, which investigated interchange modes in the presence of velocity shear. The experimental spectral data, taken in the plasma edge, are in general agreement with the numerical data obtained in higher viscosity simulations for which the level of viscosity is chosen consistent with MCX Reynolds numbers at the edge. In particular, the residual turbulence in both cases is dominated by elongated convection cells. Finally, concomitant Kelvin-Helmholtz instabilities in the system are also examined. Complete stability to interchanges is obtained only in the parameter space wherein the generalized Rayleigh inflexion theorem is satisfied.

Hung, C. P.; Hassam, A. B. [University of Maryland at College Park, College Park, Maryland 20742 (United States)

2013-01-15T23:59:59.000Z

185

A process for incorporating automotive shredder residue into thermoplastic mouldings  

Science Journals Connector (OSTI)

This paper describes a process for utilising the waste that remains when all of the economically reclaimable materials have been recovered from automobiles that have reached the end of their lives. This waste material, known as automotive shredder residue (ASR), is currently disposed of in landfill sites but forthcoming environmental legislation in the European Union and elsewhere will drastically restrict the amount that can be disposed of in this way. By 2015, 80% of the ASR currently going to landfill must be recycled. The dual injection moulding process is used to mould a skin of virgin polymer over a compound containing the ASR which forms the core of a new component. Polypropylene (PP) was used as the skin material and also as the material to compound with the ASR. A 50%/50% mix by volume of PP and ASR granules was found to produce good results as the core material. Experiments were performed to vary the skin to core ratio in order to establish the effect of varying the proportion of ASR on the mechanical properties of mouldings. It was found that mouldings produced containing 25% by volume of ASR were visually excellent due to the pure PP skin. Inclusion of higher proportions of ASR by decreasing the skin:core thickness ratio was found to produce “breakthrough” of the ASR particles into the skin and test results were highly inconsistent. Using smaller proportions of ASR can be predicted to produce better mechanical properties but would have been contrary to the aim of developing a process capable of disposing of large quantities of ASR. It is concluded that recycling of ASR by using it as a core material in the dual injection moulding process is a feasible option for mouldings requiring good visual appearance but is not suited to components requiring significant strength.

S. Robson; T.C. Goodhead

2003-01-01T23:59:59.000Z

186

PCB (polychlorinated biphenyl) residues in transformer carcasses: Final report  

SciTech Connect (OSTI)

This project had three objectives. The first was to assess the population of PCB-containing transformers remaining in service in the US in 1988. While this could not be done with great precision, it appears that the population of oil-filled transformers containing > 50 /mu/g PCB/g oil has decreased by some 15% since 1982 and that the population of askarel-filled transformers has decreased by some 40% in the same time period. This progress could be continued and accelerated if additional reliable and accepted routes for disposal of PCBs contained in transformers would be developed. The second and third objectives of this project have been to examine two simplified approaches to this end. The second objective was to determine if, by draining PCB-containing oil from transformers and refilling with PCB-free oil, a level of PCBs below 50 ppM (/mu/g/g oil) could be reached with assurance. It appears that reclassification of ''PCB-contaminated'' oil-filled transformers (50--500 /mu/g PCB/g oil) of all ratings by draining and refilling could be done routinely. The third objective was to determine the level of residual PCBs left on the metallic surfaces of askarel-filled transformers which, if these units were refilled with PCB-free mineral transformer oil, would have resulted in concentrations of <50 /mu/g PCB/g oil. It appears that cleaning the surfaces of the metallic components, after careful separation and disposal of the liquid and impregnated solid insulations, to a level of 400 /mu/gPCB/100 cm/sup 2/ would result in transformer carcasses of all sizes which would contain less PCBs than would be found were these transformers to have contained oil at the level of 50 /mu/gPCB/g oil. 7 refs., 6 figs., 9 tabs.

Rouse, T.O.; Raymond, C.T.; Fessler, W.A.

1989-08-01T23:59:59.000Z

187

Pretreatment of automobile shredder residue (ASR) for fuel utilization  

Science Journals Connector (OSTI)

Automobile shredder residue (ASR) was pretreated to improve its quality for fuel utilization. Composition analysis revealed that ASR components could be classified into four groups: (1) urethane and textile—light fraction and combustibles containing low levels of ash and Cl; (2) plastics and rubber—light or heavy fraction and combustibles containing high levels of Cl; (3) metals and electrical wire—heavy fraction and incombustibles, and (4) particles smaller than 5.6 mm with high ash contents. Based on these results, we successively performed sieving to remove particles smaller than 5.6 mm, float and sink separations to reject the heavy fraction and plastics and rubber containing Cl, thermal treatment under an inert atmosphere to remove Cl derived from PVC, and char washing to remove soluble chlorides. This series of pretreatments enabled the removal of 78% of the ash and 91% of the Cl from ASR. Sieving using a 5.6-mm mesh removed a considerable amount of ash. Product quality was markedly improved after the float and sink method. Specifically, the sink process using a 1.1 g cm?3 medium fluid rejected almost all rubber containing Cl and a large amount of PVC. The remaining Cl in char, after heating at 300 °C under an inert atmosphere and washing, was considered to be present as insoluble chlorides that volatilized at temperatures above 300 °C. Based on a tradeoff relationship between product quality and treatment cost, ASR may be utilized as a form of refuse plastic fuel or char.

I.H. Hwang; S. Yokono; T. Matsuto

2008-01-01T23:59:59.000Z

188

Effects of the components of coal hydro-liquefaction residue on its rheological characteristics  

SciTech Connect (OSTI)

Four kinds of typical coal liquefaction residue samples, coming from Shenhua coal liquefaction pilot plant, were used to investigate the effects of components of residue, separation time, and temperature on its rheological characteristics. Coal liquefaction residue is a non-Newtonian pseudoplastic fluid whose apparent viscosity decreases with increasing shear rate. Moreover, the residue has high viscosity at the initial softening temperature, and its viscosity drops greatly with increasing temperature. The oil content in residue has a great effect on the decline of the apparent viscosity of residue. The asphaltene can increase the apparent viscosity at lower temperatures but decrease it at higher temperatures. However, the solid only increases the apparent viscosity as it can be neither softened nor dissolved to become fluid. After simulating the separation condition, it is found that prolonging the separation time and enhancing the separation temperature will increase the apparent viscosity of residue, which is bad for preventing pipes from being blocked. So choosing the right separation time and separation temperature is necessary to actual industrial production.

Ren, Y.; Jin, S.; Xu, Y.; Wei, A.; Zhang, D.; Gao, J. [East China University of Science & Technology, Shanghai (China)

2009-07-01T23:59:59.000Z

189

Repair welding influence on offshore pipelines residual stress fields: An experimental study  

Science Journals Connector (OSTI)

Abstract Repair welds, are frequently used in steel structures either to remedy initial fabrication defects, or to rectify in-service degradations of the components. Some previous investigations indicated that repair welding is likely to pose adverse effects on the long-term integrity of the structure exposed to high pressure and temperature actions. It is believed that high residual stresses, associated with the repair process, most probably play an important role in many of subsequent failures. Repair welds might aggravate the size, magnitude and distribution of the tensile residual stresses in the weldments. These adversely affect the component structural integrity and remaining life. So far, no generally accepted guideline is available to provide reliable evaluations on the possible side effects from the repair welding in offshore oil/gas pipelines. This paper reports the result of residual stress measurement on single/double and partial/full repair welds in offshore pipelines. The semi destructive blind hole drilling and destructive sectioning methods have been employed to measure the residual stress fields in each case. In general, the results of the two measurement methods are in reasonable agreement. Residual stresses which are caused by full and partial repairs in the studied samples slightly increased the residual stress distribution when compared to the as-welded condition. Repetition of repair welding in same area influenced the residual stresses' magnitude and distribution especially in areas close to the weld centre line.

M. Zeinoddini; S. Arnavaz; A.P. Zandi; Y. Alizadeh Vaghasloo

2013-01-01T23:59:59.000Z

190

Injection, flow, and mixing of CO2 in porous media with residual gas.  

SciTech Connect (OSTI)

Geologic structures associated with depleted natural gas reservoirs are desirable targets for geologic carbon sequestration (GCS) as evidenced by numerous pilot and industrial-scale GCS projects in these environments world-wide. One feature of these GCS targets that may affect injection is the presence of residual CH{sub 4}. It is well known that CH{sub 4} drastically alters supercritical CO{sub 2} density and viscosity. Furthermore, residual gas of any kind affects the relative permeability of the liquid and gas phases, with relative permeability of the gas phase strongly dependent on the time-history of imbibition or drainage, i.e., dependent on hysteretic relative permeability. In this study, the effects of residual CH{sub 4} on supercritical CO{sub 2} injection were investigated by numerical simulation in an idealized one-dimensional system under three scenarios: (1) with no residual gas; (2) with residual supercritical CO{sub 2}; and (3) with residual CH{sub 4}. We further compare results of simulations that use non-hysteretic and hysteretic relative permeability functions. The primary effect of residual gas is to decrease injectivity by decreasing liquid-phase relative permeability. Secondary effects arise from injected gas effectively incorporating residual gas and thereby extending the mobile gas plume relative to cases with no residual gas. Third-order effects arise from gas mixing and associated compositional effects on density that effectively create a larger plume per unit mass. Non-hysteretic models of relative permeability can be used to approximate some parts of the behavior of the system, but fully hysteretic formulations are needed to accurately model the entire system.

Oldenburg, C.M.; Doughty, C.A.

2010-09-01T23:59:59.000Z

191

Development of the Neutron Diffraction Technique for the Determination of Near Surface Residual Stresses in Critical Gas Turbine Components  

Science Journals Connector (OSTI)

Near surface residual stresses contribute significantly to the life of structural engineering components. A method of producing compressive residual stresses in the surface region of components to give improve...

A. N. Ezeilo; P. S. Webster; G. A. Webster…

1992-01-01T23:59:59.000Z

192

Determination of an acceptable assimilable organic carbon (AOC) level for biological stability in water distribution systems with minimized chlorine residual  

Science Journals Connector (OSTI)

There is considerable interest in minimizing the chlorine residual in Japan because of increasing complaints about a chlorinous odor in drinking water. However, minimizing the chlorine residual causes the microbi...

Yumiko Ohkouchi; Bich Thuy Ly; Suguru Ishikawa…

2013-02-01T23:59:59.000Z

193

Fractionation and transport of nutrients among coal ash residues and in soil covered with fly ash-amended organic compost  

Science Journals Connector (OSTI)

Coal-fired power plants generate different types of ash residues and discharge small particles and vapors to the atmosphere. The ash residues which account for the major part ... the byproducts are collected and ...

M. P. Menon; K. S. Sajwan; G. S. Ghuman; J. James…

1993-07-01T23:59:59.000Z

194

Microstructure and residual stress evaluation of ductile cast iron using the critically refracted longitudinal (Lcr) wave propagation technique  

E-Print Network [OSTI]

Residual stress and microstructure evaluation of ductile cast iron using a nondestructive method (Critically Refracted Longitudinal Ultrasonic Wave Technique) was approached. Residual stresses, both good and bad graphite nodules, and different...

Bennett, Robert Jeffrey

2012-06-07T23:59:59.000Z

195

Experimental and theoretical study on the characteristics of vacuum residue gasification in an entrained-flow gasifier  

Science Journals Connector (OSTI)

About 200,000 bpd (barrel/day) vacuum residue oil is produced from oil refineries in Korea. These are supplied to use asphalt, high sulfur fuel oil, and upgrading residue hydro-desulfurization units. High sulfur ...

Young-Chan Choi; Jae-Goo Lee; Sang-Jun Yoon…

2007-01-01T23:59:59.000Z

196

The Third Law of Thermodynamics and the residual entropy of ice: "Stillwater" or ?SH2Of,T=0 = 0  

Science Journals Connector (OSTI)

The Third Law of Thermodynamics and the residual entropy of ice: "Stillwater" or ?SH2Of,T=0 = 0 ... This paper will explore the connection between the third law of thermodynamics and the residual entropy of ice. ... Thermodynamics ...

Maureen M. Julian; Frank H. Stillinger; Roger R. Festa

1983-01-01T23:59:59.000Z

197

Evaluation of low-residue soldering for military and commercial applications: A report from the Low-Residue Soldering Task Force  

SciTech Connect (OSTI)

The LRSTF combined the efforts of industry, military, and government to evaluate low-residue soldering processes for military and commercial applications. These processes were selected for evaluation because they provide a means for the military to support the presidential mandate while producing reliable hardware at a lower cost. This report presents the complete details and results of a testing program conducted by the LRSTF to evaluate low-residue soldering for printed wiring assemblies. A previous informal document provided details of the test plan used in this evaluation. Many of the details of that test plan are contained in this report. The test data are too massive to include in this report, however, these data are available on disk as Excel spreadsheets upon request. The main purpose of low-residue soldering is to eliminate waste streams during the manufacturing process.

Iman, R.L.; Anderson, D.J. [Sandia National Labs., Albuquerque, NM (United States); Burress, R.V. [SEHO (United States)] [and others

1995-06-01T23:59:59.000Z

198

,"U.S. Total Sales of Residual Fuel Oil by End Use"  

U.S. Energy Information Administration (EIA) Indexed Site

Residual Fuel Oil by End Use" Residual Fuel Oil by End Use" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","U.S. Total Sales of Residual Fuel Oil by End Use",8,"Annual",2012,"6/30/1984" ,"Release Date:","11/15/2013" ,"Next Release Date:","10/31/2014" ,"Excel File Name:","pet_cons_821rsd_dcu_nus_a.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/pet/pet_cons_821rsd_dcu_nus_a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.gov"

199

Fundamentals of Petroleum Residue Cracking Gasification for Coproduction of Oil and Syngas  

Science Journals Connector (OSTI)

Fundamentals of Petroleum Residue Cracking Gasification for Coproduction of Oil and Syngas ... Thus, the terminology of heavy oil or heavy residue can be also used to indicate all such heavy petroleum oils. ... Notwithstanding, for the RCG process it is ideal to develop the catalyst that has moderate cracking activity for heavy residues or heavy oils but meanwhile good activity for catalyzing the deposited coke gasification so that the gasification can be at reasonably low temperatures to maintain the catalytic activity for cracking heavy fractions. ...

Yuming Zhang; Deping Yu; Wangliang Li; Yin Wang; Shiqiu Gao; Guangwen Xu

2012-10-23T23:59:59.000Z

200

Potential of crop residue in India as a source of energy  

Science Journals Connector (OSTI)

Here is given an estimate of crop residue production and different recycling options as a source of renewable energy. India produces 388 Tg crop residues but only 182 Tg equivalent to 2818 PJ is usable. Recycling as manure can replace 15% of 595 PJ national fertiliser energy. Recycling in digester can produce 20.32 billion m³ biogas. It can be converted into 182 Tg of biocoal generating 156â??258.3 billion unit (kWh) electricity. It can lead to 16 billion dm³ ethanol productions. Having less environmental consequences, different recycling options can make the crop residue an environmentally sound sustainable energy system.

Apurba Sarkar

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

,"U.S. Adjusted Sales of Residual Fuel Oil by End Use"  

U.S. Energy Information Administration (EIA) Indexed Site

Residual Fuel Oil by End Use" Residual Fuel Oil by End Use" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","U.S. Adjusted Sales of Residual Fuel Oil by End Use",8,"Annual",2012,"6/30/1984" ,"Release Date:","11/15/2013" ,"Next Release Date:","10/31/2014" ,"Excel File Name:","pet_cons_821rsda_dcu_nus_a.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/pet/pet_cons_821rsda_dcu_nus_a.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.gov"

202

Smoking Status and Occupational Exposure Affects Oxidative DNA Injury in Boilermakers Exposed to Metal Fume and Residual Oil Fly Ash  

Science Journals Connector (OSTI)

...sensitization by residual oil fly ash particles...composition of residual oil fly ash determines...coupled plasma sector field mass spectrometry...particulate-mediated cytokine production in lung epithelial...et al. Residual oil fly ash induces cytotoxicity...probably through cumulative oxidative DNA damage...

Sutapa Mukherjee; Lyle J. Palmer; Jee Young Kim; David B. Aeschliman; Robert S. Houk; Mark A. Woodin; and David C. Christiani

2004-03-01T23:59:59.000Z

203

EIS-0277: Management of Certain Plutonium Residues and Scrub Alloy Stored  

Broader source: Energy.gov (indexed) [DOE]

77: Management of Certain Plutonium Residues and Scrub Alloy 77: Management of Certain Plutonium Residues and Scrub Alloy Stored at the Rocky Flats Environmental Technology Site EIS-0277: Management of Certain Plutonium Residues and Scrub Alloy Stored at the Rocky Flats Environmental Technology Site SUMMARY This EIS evaluates the potential alternatives and impacts associated with a proposal to process certain plutonium residues and all of the scrub alloy currently stored at Rocky Flats. While ongoing stabilization activities at Rocky Flats are addressing immediate health and safety concerns associated with existing storage conditions, the indefinite storage of these materials, even after stabilization, would continue to present health and safety concerns that could only be eliminated by disposal or other disposition of the materials. Thus, this

204

EA-1120: Solid Residues Treatment, Repackaging and Storage at the Rocky  

Broader source: Energy.gov (indexed) [DOE]

20: Solid Residues Treatment, Repackaging and Storage at the 20: Solid Residues Treatment, Repackaging and Storage at the Rocky Flats Environmental Technology Site, Golden, Colorado EA-1120: Solid Residues Treatment, Repackaging and Storage at the Rocky Flats Environmental Technology Site, Golden, Colorado SUMMARY This EA evaluates the environmental impacts of the proposal to stabilize, if necessary, and/or repackage the residues for safe interim storage at the Site while awaiting the completion and opening of a suitable repository to which they would be shipped for disposal from the U.S. Department of Energy Rocky Flats Environmental Technology Site in Golden, Colorado. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD April 1, 1996 EA-1120: Finding of No Significant Impact

205

U.S. DEPARTMENT OF ENERGY GUIDELINES FOR RESIDUAL RADIOACTIVE MATERIAL AT  

Broader source: Energy.gov (indexed) [DOE]

I I U.S. DEPARTMENT OF ENERGY GUIDELINES FOR RESIDUAL RADIOACTIVE MATERIAL AT FORMERLY UTILIZED SITES REMEDIAL ACTION PROGRAM AHD REMOTE SURPLUS FACILITIES MANAGEMENT PROGRAM SITES (Revision 2, March 1987) A. INTRODUCTION This document presents U.S. Department of Energy (DOE) radiological protection guidelines for cleanup of residual radioactive material and management of the resulting wastes and residues. It is applicable to si~es - "C-- identified by the Formerly Utilized Sites l{emedia1 Ac:tionProgram (FUSRAP) .and remote sites identified by the Surplus Facilities Management Program (SFMP).* The topics covered are basic dose limits, guidelines and authorized limits for allowable levels of residual radioactive material, and requirements for

206

Hanford Tank 241-S-112 Residual Waste Composition and Leach Test Data  

SciTech Connect (OSTI)

This report presents the results of laboratory characterization and testing of two samples (designated 20406 and 20407) of residual waste collected from tank S-112 after final waste retrieval. These studies were completed to characterize the residual waste and assess the leachability of contami¬nants from the solids. This is the first report from this PNNL project to describe the composition and leach test data for residual waste from a salt cake tank. All previous PNNL reports (Cantrell et al. 2008; Deutsch et al. 2006, 2007a, 2007b, 2007c) describing contaminant release models, and characterization and testing results for residual waste in single-shell tanks were based on samples from sludge tanks.

Cantrell, Kirk J.; Krupka, Kenneth M.; Geiszler, Keith N.; Lindberg, Michael J.; Arey, Bruce W.; Schaef, Herbert T.

2008-08-29T23:59:59.000Z

207

An X-ray study of residual macrostresses in protective coatings for gas-turbine blades  

Science Journals Connector (OSTI)

The x-ray method is used to determine residual macrostresses in the surface layer of protective coatings on high-temperature alloys. Coatings deposited by the high-energy vacuum-plasma (HEVP) method were subje...

Yu. D. Yagodkin; K. M. Pastukhov; E. V. Milyaeva…

1997-11-01T23:59:59.000Z

208

Recovery of the Shear Modulus and Residual Stress of Hyperelastic Soft Tissues by Inverse Spectral Techniques  

E-Print Network [OSTI]

frequencies of the vessel wall material. As the IVUS is interrogating inside the artery, it produces small amplitude, high frequency time harmonic vibrations superimposed on the quasistatic deformation of the blood pressure pre-stressed and residually...

Gou, Kun 1981-

2012-11-15T23:59:59.000Z

209

Treating electrolytic manganese residue with alkaline additives for stabilizing manganese and removing ammonia  

Science Journals Connector (OSTI)

Electrolytic manganese residue (EMR) from the electrolytic manganese industry is a solid waste containing mainly calcium sulfate dihydrate and quartzite. It is impossible to directly use the EMR as a building mat...

Changbo Zhou; Jiwei Wang; Nanfang Wang

2013-11-01T23:59:59.000Z

210

ABSTRACT: Bioenergy Harvesting Technologies to Supply Crop Residues In a Densified Large Square Bale Format  

Broader source: Energy.gov [DOE]

This abstract from AGCO presents the project objectives for the integration of advanced logistical systems and focused bioenergy harvesting technologies that supply crop residues and energy crops in a large bale format.

211

Reburning Characteristics of Residual Carbon in Fly Ash from CFB Boilers  

Science Journals Connector (OSTI)

The content of residual carbon in fly ash of CFB boilers is a litter high especially when ... of fly ash through collection, recirculation in CFB furnace or external combustor is a possibly ... ash and correspond...

S. H. Zhang; H. H. Luo; H. P. Chen…

2010-01-01T23:59:59.000Z

212

E-Print Network 3.0 - atp binding residues Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: atp binding residues Page: << < 1 2 3 4 5 > >> 1 Asymmetric deceleration of ClpB or Hsp104...

213

Determination of metals in heavy oil residues by inductively coupled plasma atomic emission spectroscopy  

Science Journals Connector (OSTI)

A method is proposed for the sample preparation of heavy oil residues characterized by viscosity of more than 700 mm2/sec at 100°C to study their elemental composition. It is shown that a wide range of elements c...

T. A. Maryutina; N. S. Musina

2012-10-01T23:59:59.000Z

214

Hydroconversion of polyethylene and tire rubber in a mixture with heavy oil residues  

Science Journals Connector (OSTI)

The results of studies on the processing of solid polymer wastes in a mixture with the heavy petroleum residues by hydroconversion with the use of the precursors of nanosized catalysts are given. It was found ...

Kh. M. Kadiev; A. U. Dandaev; A. M. Gyul’maliev; A. E. Batov…

2013-03-01T23:59:59.000Z

215

Table 42. Residual Fuel Oil Prices by PAD District and State  

Gasoline and Diesel Fuel Update (EIA)

55.1 47.1 W W 55.1 46.2 See footnotes at end of table. 42. Residual Fuel Oil Prices by PAD District and State Energy Information Administration Petroleum...

216

Polybrominated diphenyl ethers in combusted residues and soils from an open burning site of electronic wastes  

Science Journals Connector (OSTI)

Polybrominated diphenyl ethers (PBDEs) are ubiquitous environmental contaminants due to their extensive use. Combusted residue from electronic waste (e-waste) combustion is one of the contamination sources ... tr...

Qian Luo; Ming Hong Wong; Zijian Wang; Zongwei Cai

2013-08-01T23:59:59.000Z

217

Feature-incorporated alignment based ligand-binding residue prediction for carbohydrate-binding modules  

Science Journals Connector (OSTI)

......of hydrogen bonding in the interaction between a xylan binding module and xylan. Biochemistry (2001) 40:5700-5707. Yang...predicted ligand-binding residues residing on the surface in the hypothetical structures were verified to......

Wei-Yao Chou; Wei-I Chou; Tun-Wen Pai; Shu-Chuan Lin; Ting-Ying Jiang; Chuan-Yi Tang; Margaret Dah-Tsyr Chang

2010-04-15T23:59:59.000Z

218

Experimental Study on Co-gasification of Coal Liquefaction Residue and Petroleum Coke  

Science Journals Connector (OSTI)

An experimental study on co-gasification of coal liquefaction residue and petroleum coke in carbon dioxide was investigated by thermogravimetric analysis. The temperature of the experiment was 1173–1323 K, and the isothermal (1273 K) kinetics were ...

Xin Liu; Zhi-jie Zhou; Qi-jing Hu; Zheng-hua Dai; Fu-chen Wang

2011-06-20T23:59:59.000Z

219

Laser surface-contouring and spline data-smoothing for residual stress measurement  

Science Journals Connector (OSTI)

We describe non-contact scanning with a confocal laser probe to measure surface contours for application to residual stress measurement. (In the recently introduced contour method, a part is cut in two with a ...

M. B. Prime; R. J. Sebring; J. M. Edwards; D. J. Hughes…

2004-04-01T23:59:59.000Z

220

E-Print Network 3.0 - acceptable residual magnetic Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in the shaking coils was set to 35 mA at 200 Hz. Profiles of the residual magnetic field measured along... shielding factor of only 8. Figure 3 shows results of compensating...

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Multispectral detection of organic residues on poultry processing plant equipment based on hyperspectral reflectance imaging technique  

Science Journals Connector (OSTI)

Diluted organic residues, such as feces, ingesta and other biological substances on poultry processing plant equipment surfaces, not easily discernible by human eye, are potential contamination sources for poultry carcasses. Development of sensitive ... Keywords: Fecal contamination, Hyperspectral, Multispectral, Reflectance image

Byoung-Kwan Cho; Yud-Ren Chen; Moon S. Kim

2007-07-01T23:59:59.000Z

222

The influence of calcium on the inhibition of arsenic desorption from treatment residuals in extreme environments  

E-Print Network [OSTI]

the surface properties of the oxy-hydroxide solid in solution. Results show that calcium enhances the removal by iron oxides and prevents the leaching of arsenic from the residuals. Isotherm experiments show that arsenic adsorption can be described...

Camacho, Julianna G.

2006-04-12T23:59:59.000Z

223

Ecotoxicological Implications of Aquatic Disposal of Coal Combustion Residues In the United States: A Review  

Science Journals Connector (OSTI)

We provide an overview of research related to environmental effects of disposal of coal combustion residues (CCR) in sites in the United States. Our focus is on aspects of CCR that have the potential to negati...

Christopher L. Rowe; William A. Hopkins…

2002-12-01T23:59:59.000Z

224

Microstructure and nanoindentation measurement of residual stress in Fe-based coating by laser cladding  

Science Journals Connector (OSTI)

Laser cladding is a surface modification technique for improving ... always originated, which can create cracks in cladding coatings. The through-thickness residual stresses in Fe-based coating prepared by laser

Li-Na Zhu; Bin-Shi Xu; Hai-Dou Wang; Cheng-Biao Wang

2012-03-01T23:59:59.000Z

225

Experimental study of the residual stress-induced self-assembly of MEMS structures during deposition  

E-Print Network [OSTI]

The possibility of using residual stresses favorably as a means of self-assembling MEMS during material deposition is experimentally investigated. Two atomic force microscope cantilevers are placed in contact at their free ends. Material...

Kim, Sang-Hyun

2005-11-01T23:59:59.000Z

226

Abundant and Stable Char Residues in Soils: Implications for Soil Fertility and Carbon Sequestration  

Science Journals Connector (OSTI)

Abundant and Stable Char Residues in Soils: Implications for Soil Fertility and Carbon Sequestration ... Large-scale soil application of biochar may enhance soil fertility, increasing crop production for the growing human population, while also sequestering atmospheric carbon. ...

J.-D. Mao; R. L. Johnson; J. Lehmann; D. C. Olk; E. G. Neves; M. L. Thompson; K. Schmidt-Rohr

2012-07-27T23:59:59.000Z

227

Table A3. Refiner/Reseller Prices of Distillate and Residual...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Fuel Oils, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) Geographic Area Year No. 1 Distillate No. 2 Distillate a No. 4 Fuel b Residual Fuel Oil Sales to End...

228

Evaluation of residual stress gradients in ductile cast iron using critical refracted longitudinal (Lcr) wave technique  

E-Print Network [OSTI]

improper or unnecessary heat-treatments extremely costly. Knowledge of the residual stress ipudient can make production of the component much more efficient and economicaL This knowledge could also be used to predict service life of components...

Pfluger, Ron Atlan

1995-01-01T23:59:59.000Z

229

An HPLC Method for the Determination of Bromadiolone Plasma Kinetics and its Residues in Hen Eggs  

Science Journals Connector (OSTI)

......residues of this compound, which is dangerous for human health. Previous studies on warfarin...transmitted to Italian Ministry of Health. A flock (n = 48) of laying...were monitored daily for general health by qualified personnel supervised......

Mario Giorgi; Grazia Mengozzi

2010-10-01T23:59:59.000Z

230

Vehicle Technologies Office Merit Review 2014: Residual Stress of Bimetallic Joints and Characterization  

Broader source: Energy.gov [DOE]

Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about residual stress...

231

E-Print Network 3.0 - acetylated lysine residues Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

575586, March, 2002, Copyright 2002 by Cell Press Structural Basis of Lysine-Acetylated HIV-1 Summary: ). Peptide residues flanking the acetyl-lysine contact the protein.to...

232

Using mobile distributed pyrolysis facilities to deliver a forest residue resource for bio-fuel production.  

E-Print Network [OSTI]

??Distributed mobile conversion facilities using either fast pyrolysis or torrefaction processes can be used to convert forest residues to more energy dense substances (bio-oil, bio-slurry… (more)

Brown, Duncan

2013-01-01T23:59:59.000Z

233

Swelling related to ettringite crystal formation in chromite ore processing residue  

Science Journals Connector (OSTI)

Several million tons of Chromite Ore Processing Residue (COPR) were deposited at two sites in New Jersey and Maryland, USA, and over time they exhibited extensive heaving phenomena. Ettringite, a needle-shaped mi...

Deok Hyun Moon; Dimitris Dermatas; Mahmoud Wazne…

2007-08-01T23:59:59.000Z

234

Evaluation of ettringite-related swelling mechanisms for treated chromite ore processing residue  

Science Journals Connector (OSTI)

Accelerated one-dimensional unconfined swell tests were conducted for ferrous sulfate chromite ore processing residue (COPR) field-treated samples. The field-treated samples were subjected to wet and dry cycle...

Deok Hyun Moon; Mahmoud Wazne…

2014-09-01T23:59:59.000Z

235

Evaluation of Residual Stresses in the Bulk of Materials by High Energy Synchrotron Diffraction  

Science Journals Connector (OSTI)

High energy synchrotron diffraction is introduced as a new ... for residual stress analysis in the bulk of materials. It is shown that energy dispersive measurements are sufficiently precise so that...?4...can be...

W. Reimers; M. Broda; G. Brusch; D. Dantz…

1998-09-01T23:59:59.000Z

236

Evaluation of residual stresses in the bulk of materials by high energy synchrotron diffraction  

Science Journals Connector (OSTI)

High energy synchrotron diffraction is introduced as a new ... for residual stress analysis in the bulk of materials. It is shown that energy dispersive measurements are sufficiently precise so that...?4...can be...

W. Reimers; M. Broda; G. Brusch; D. Dantz…

1998-09-01T23:59:59.000Z

237

Control of residual aluminum from conventional treatment to improve reverse osmosis performance  

E-Print Network [OSTI]

2005. The Role of Dissolved Aluminum in Silica Chemistry forDraft Public Health Goal for Aluminum in Drinking Water .1994. Control of Residual Aluminum in Filtered Water . AWWA,

Gabelich, C J; Ishida, K P; Gerringer, F W; Evangelista, R; Kalyan, M; Suffet, I H

2006-01-01T23:59:59.000Z

238

Residual thermal stresses in an unsymmetrical cross-ply graphite/epoxy laminate  

E-Print Network [OSTI]

RESIDUAL THERMAL STRESSES IN AN UNSYMMETRICAL CROSS-PLY GRAPHITE/EPOXY LAMINATE A Thesis by BRIAN DOUGLAS HARPER Submitted to the Graduate College of Texas A&M University in parrial fulfillment of the requirement for the degree of MASTER... OF SCIENCE August 1980 Major Subject: Mechanical Engineering RESIDUAL THERMAL STRESSES IN AN UNSYMMETRICAL CROSS-PLY GRAPHITE/EPOXY LAMINATE A Thesis by BRIAN DOUGLAS HARPER Approved as to style and content by: r. Y. N itsman (Chair of Committee) Dr...

Harper, Brian Douglas

2012-06-07T23:59:59.000Z

239

Development of source functions for modeling dissolution of residual DNAPL fingers in the saturated zone  

E-Print Network [OSTI]

DEVELOPMENT OF SOURCE FUNCTIONS FOR MODELING DISSOLUTION OF RESIDUAL DNAPL FINGERS IN THE SATURATED ZONE A Thesis by BRIAN SCOTT JOHNSON Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1993 Major Subject: Geology DEVELOPMENT OF SOURCE FUNCTIONS FOR MODELING DISSOLUTION OF RESIDUAL DNAPL FINGERS IN THE SATURATED ZONE A Thesis by BRIAN SCOTI' JOHNSON Submitted to Texas Agt...

Johnson, Brian Scott

2012-06-07T23:59:59.000Z

240

Time dependent ellipsoidal residual velocity distributions for self-gravitating systems of collisionless particles  

E-Print Network [OSTI]

TIME DEPENDENT ELLIPSOIDAL RESIDUAL VELOCITY DISTRIBUTIONS FOR SELF-GRAVITATING SYSTEMS OF COLLISIONLESS PARTICLES A Thesis by FRANK ROBERT SINS Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE May 1973 Major Subject: Physi cs TIME DEPENDENT ELLIPSOIDAL RESIDUAL VELOCITY DISTRIBUTIONS FOR SELF-GRAVITATING SYSTEMS OF COLLISIONLESS PARTICLES A Thesis by FRANK ROBERT SIMMS Approved as to style...

Simms, Frank Robert

1973-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Residual stress measurement on ductile cast iron using critically refracted longitudinal (Lcr) wave technique  

E-Print Network [OSTI]

using ultrasonics was approached. Residual stresses in castings are developed for various reasons. The presence of these stresses, coupled with applied stresses in service, sometimes results in the yield of material and subsequent failure of component.... Present work was focussed on development of an ultrasonic technique using critically refracted longitudinal (L g waves for evaluating residual stresses in ductile cast iron. An L probe suitable to work with ductile cast iron was designed and fabricated...

Chundu, Srinivasulu Naidu

2012-06-07T23:59:59.000Z

242

Investigation of the effect of gel residue on hydraulic fracture conductivity using dynamic fracture conductivity test  

E-Print Network [OSTI]

INVESTIGATION OF THE EFFECT OF GEL RESIDUE ON HYDRAULIC FRACTURE CONDUCTIVITY USING DYNAMIC FRACTURE CONDUCTIVITY TEST A Thesis by FIVMAN MARPAUNG Submitted to the Office of Graduate Studies of Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2007 Major Subject: Petroleum Engineering INVESTIGATION OF THE EFFECT OF GEL RESIDUE ON HYDRAULIC FRACTURE CONDUCTIVITY USING DYNAMIC FRACTURE CONDUCTIVITY TEST A...

Marpaung, Fivman

2008-10-10T23:59:59.000Z

243

Conversion of Residual Biomass into Liquid Transportation Fuel: An Energy Analysis  

Science Journals Connector (OSTI)

Conversion of Residual Biomass into Liquid Transportation Fuel: An Energy Analysis ... An energy balance, in broad outline, is presented for the production of a high-quality liquid transportation fuel from residual crop biomass. ... That is, 40% of the initial energy in the biomass will be found in the final liquid fuel after subtracting out external energy supplied for complete processing, including transportation as well as material losses. ...

J. Manganaro; B. Chen; J. Adeosun; S. Lakhapatri; D. Favetta; A. Lawal; R. Farrauto; L. Dorazio; D. J. Rosse

2011-04-20T23:59:59.000Z

244

Ocean Sequestration of Crop Residue Carbon: Recycling Fossil Fuel Carbon Back to Deep Sediments  

Science Journals Connector (OSTI)

burial of crop residues in the deep ocean (hereafter, CROPS: Crop Residue Oceanic Permanent Sequestration). ... As long as fuels exist with higher energy yield-to-carbon content (E/C) ratios than biomass, it will always be more energy efficient and less carbon polluting to sequester the biomass in the deep oceans, and use those fuels with higher E/C ratios for power generation, rather than to burn biomass for power generation. ...

Stuart E. Strand; Gregory Benford

2009-01-12T23:59:59.000Z

245

A survey of DDT residues in fish from the Brazos and Navasota Rivers and Somerville Reservoir  

E-Print Network [OSTI]

residues found in fish. Land along the Navasota River bottom is almost exclusively rangeland. The soil has not been exposed to agrochemicals, at least not in the last 37 50 years. In general, samples of fish reflect this absence of extensive... residues found in fish. Land along the Navasota River bottom is almost exclusively rangeland. The soil has not been exposed to agrochemicals, at least not in the last 37 50 years. In general, samples of fish reflect this absence of extensive...

Kramer, Robert Edwin

2012-06-07T23:59:59.000Z

246

Interlaboratory comparisons of petrography of liquefaction residues from three Argonne premium coals  

Science Journals Connector (OSTI)

Three Argonne Premium coal samples, the Beulah-Zap lignite (North Dakota), the high volatile A bituminous Stockton (West Virginia), and the low volatile Pocahontas No. 3 Virginia), were ground to three initial sizes: ?20 mesh, ?100 mesh, and “micronized”. The samples were each subjected to liquefaction at 673 K for 30 min at a 2:1 tetralin: coal ratio and in an H2 atmosphere at 13.79 \\{MPa\\} (?2000 psi). Polished pellets of the uncoverted residues were circulated to three laboratories for a study designed to determine, albeit on a limited scale, the interlaboratory consistency in constituent identification and the problem areas in maceral/neo-maceral/mineral recognition. Within broad categories, the agreement for the Beulah-Zap and Pocahontas No. 3 residues is good. The high volatile A bituminous Stockton coal was the most plastic and most altered, resulting in a residue lending itself to more subjective interpretations. The biggest discrepancy between the laboratories is in the distinction of granular residue and mineral matter and in the transitions between “partially reacted macerals” and “vitroplast” and between “vitroplast” and “granular residue”. The initial size of the feed coal appears to influence the recognition of material in the residue.

James C. Hower; Ken B. Anderson; Glenda Mackay; Henrique Pinheiro; Deolinda Flores; Manuel J. Lemos de Sousa

1995-01-01T23:59:59.000Z

247

Effects of residual stresses on the fracture toughness of Zircaloy-2 tubes  

SciTech Connect (OSTI)

Data applicable to evaluating the fracture toughness of Zircaloy-2 pressure tubes were evaluated according to the criteria in ASTM Standards E399 and E813. It was found that the data did not meet the criteria specified in the standards, thus making it necessary to account for residual stress in determining the fracture toughness of the tubes. Therefore, residual stress in pressure tube specimens was experimentally determined to allow the incorporation of residual stresses in the calculation of fracture toughness. Sections of as fabricated 82.5 mm OD Zircaloy-2 tubes in the 30% cold worked condition were used in testing. Electrochemical Machining (ECM) was used to remove material from the interior of the tube, while measuring the resulting change in strain on the exterior of the tube with delta rosette strain gages. Utilization of this technique to reduce the cross sectional area of a tube without introducing additional stresses offers an accurate procedure for obtaining data to calculate the residual stress distribution. Assuming elastic anisotropy, the stress equations developed by Voyiadjis, Kiousis, and Hartley were used to determine the residual tangential, radial, and longitudinal stresses as a function of wall thickness. Additionally, these equations allow the determination of the shear stress and subsequently the principal stress profiles. It was found that the measured residual stress level was high enough that it must be accounted for when determining the fracture toughness of the subject Zircaloy-2 tubes. 7 refs., 7 figs.

Mohamadian, H.P.; Mirshams, A.R. (Southern Univ., Baton Rouge, LA (USA). Dept. of Mechanical Engineering); Cunningham, M.E. (Pacific Northwest Lab., Richland, WA (USA))

1991-05-01T23:59:59.000Z

248

Utilization of palm solid residue as a source of renewable and sustainable energy in Malaysia  

Science Journals Connector (OSTI)

Abstract Today, global energy consumers are addicted to fossil fuels such as natural gas, oil and coal. Although it has been anticipated that fossil fuels will be depleted soon, these fuels are still dominant as the primary source of energy in the world. Recently, many efforts have been done to substitute renewable alternative fuels to reduce dependency on fossil fuels. Biomass as one of the earliest energy sources appears to be the most promising renewable energy source due to its numerous resources and its environmentally sound characteristics. Since Malaysia is agriculture based tropical country, many crops such as palm, paddy rice and sugarcane are cultivated in this region. Malaysian palm oil industry generate huge amounts of palm solid residue (PSR) biomass such as empty fruit bunches (EFB), palm fiber, shell, trunks and fronds as byproducts which are capable to be taken into account in the energy mix of the country. In this paper, an overview of the PSR generation from Malaysian palm oil industries and its social and economic effects has been given. Indeed, performance of the direct combustion of PSR in terms of PSR composition, properties, heating value, emissions and its effects on the equipment or the components of the boilers have been reviewed. It has been found that the very high moisture content of PSR of palm industry makes their collection and transportation expensive, therefore energy conversion process could be inefficient and utilization of these materials inside the palm oil mills seems more beneficial.

Seyed Ehsan Hosseini; Mazlan Abdul Wahid

2014-01-01T23:59:59.000Z

249

Thermodynamic Model for Uranium Release from Hanford Site Tank Residual Waste  

SciTech Connect (OSTI)

A thermodynamic model of U phase solubility and paragenesis was developed for Hanford tank residual waste that will remain after tank closure. The model was developed using a combination of waste composition data, waste leach test data, and thermodynamic modeling of the leach test data. The testing and analyses were conducted using actual Hanford tank residual waste. Positive identification of the U phases by X-ray diffraction (XRD) was generally not possible because solids in the waste were amorphous, or below the detection limit of XRD for both as-received residual waste and leached residual waste. Three leachant solutions were used in the studies, dionized water, CaCO3 saturated solution, and Ca(OH)2 saturated solution. Thermodynamic modeling verified that equilibrium between U phases in the initial residual waste samples and the leachants was attained in less than a month. The paragenetic sequence of secondary phases that occur as waste leaching progresses for two closure scenarios was identified. These results have significant implications for tank closure design.

Cantrell, Kirk J.; Deutsch, William J.; Lindberg, Michael J.

2011-01-26T23:59:59.000Z

250

A hierarchical structure through imprinting of a polyimide precursor without residual layers  

Science Journals Connector (OSTI)

A patterned polyimide without a residual layer is obtained by imprinting with the assistance of a residual solvent. The effects of the wetting behaviors of the poly-amic acid (PAA) solution coated on various surfaces are examined and the formation of hierarchical patterns without residual layers is demonstrated. polydimethylsiloxane (PDMS) and PEI/PDMS are used as imprinting molds with Si and 300 nm SiO2/Si as substrates. The results indicate that the various ambits of patterns without a residual layer are formed due to the dewetting phenomena caused by surface tension (Suh 2006 Small 2 832). During imprinting, PDMS with a low surface energy makes the PAA solution flow away from its surface exposing the contact area due to dewetting. Self-organized hierarchical structures are also obtained from this process due to effective dewetting. The present study provides a new approach for fabricating patterns without residual layers and the consequent preparation of hierarchical structures, which is considered to be impossible using the lithographic technique.

I-Ting Pai; Ing-Chi Leu; Min-Hsiung Hon

2008-01-01T23:59:59.000Z

251

Cofiring lignite with hazelnut shell and cotton residue in a pilot-scale fluidized bed combustor  

SciTech Connect (OSTI)

In this study, cofiring of high ash and sulfur content lignite with hazelnut shell and cotton residue was investigated in 0.3 MWt METU Atmospheric Bubbling Fluidized Bed Combustion (ABFBC) Test Rig in terms of combustion and emission performance of different fuel blends. The results reveal that cofiring of hazelnut shell and cotton residue with lignite increases the combustion efficiency and freeboard temperatures compared to those of lignite firing with limestone addition only. CO{sub 2} emission is not found sensitive to increase in hazelnut shell and cotton residue share in fuel blend. Cofiring lowers SO{sub 2} emissions considerably. Cofiring of hazelnut shell reduces NO and N{sub 2}O emissions; on the contrary, cofiring cotton residue results in higher NO and N{sub 2}O emissions. Higher share of biomass in the fuel blend results in coarser cyclone ash particles. Hazelnut shell and cotton residue can be cofired with high ash and sulfur-containing lignite without operational problems. 32 refs., 12 figs., 11 tabs.

Zuhal Gogebakan; Nevin Selcuk [Middle East Technical University, Ankara (Turkey). Department of Chemical Engineering

2008-05-15T23:59:59.000Z

252

Stabilization of Rocky Flats combustible residues contaminated with plutonium metal and organic solvents  

SciTech Connect (OSTI)

This report describes tests on a proposed flowsheet designed to stabilize combustible residues that were generated at the Rocky Flats Environmental Technology Site (RFETS) during the machining of plutonium metal. Combustible residues are essentially laboratory trash contaminated with halogenated organic solvents and plutonium metal. The proposed flowsheet, designed by RFETS, follows a glovebox procedure that includes (1) the sorting and shredding of materials, (2) a low temperature thermal desorption of solvents from the combustible materials, (3) an oxidation of plutonium metal with steam, and (4) packaging of the stabilized residues. The role of Los Alamos National Laboratory (LANL) in this study was to determine parameters for the low temperature thermal desorption and steam oxidation steps. Thermal desorption of carbon tetrachloride (CCl{sub 4}) was examined using a heated air stream on a Rocky Flats combustible residue surrogate contaminated with CCl{sub 4}. Three types of plutonium metal were oxidized with steam in a LANL glovebox to determine the effectiveness of this procedure for residue stabilization. The results from these LANL experiments are used to recommend parameters for the proposed RFETS stabilization flowsheet.

Bowen, S.M.; Cisneros, M.R.; Jacobson, L.L.; Schroeder, N.C.; Ames, R.L.

1998-09-30T23:59:59.000Z

253

Agro-industry sugarcane residues disposal: The trends of their conversion into energy carriers in Cuba  

Science Journals Connector (OSTI)

The goal of the present work was to carry out a review of the disposal practices for the agro-industry’s sugarcane residue and the trends of energy use in Cuba. The lack of an alternative energy carrier to electricity with storage capability for use in off-season has to date been an unsolvable question. The improvement of cogeneration capacity via implementation of CEST or BIG/GTCC and the barriers for their implementation, the introduction of a medium size (3 ton/h) fast pyrolysis module (FPM3) as a solution for off-season energy demand in the agro-industry, and an assessment of the energy required to do so, were also analyzed. Bio-oil production from bagasse and sugarcane agriculture residues (SCAR) and their particularities at the sugar mill are treated. The influence of sugar facility production process configuration is analyzed. The fast pyrolysis products and the trends of their end uses in Cuba are presented. The production cost of a ton of Bio-oil for FPM3 conditions was calculated at 155 USD/ton and the payback time as a function of selling price between 160 and 110 USD/ton was estimated to be from 1.5 to 4 years. The economic feasibility of the FPM3 was estimated, comparing the added values for three scenarios: 1st case, currently-used sugar production, 16.5 USD/ton of cane; 2nd case, factoring in the cogeneration improvement, 27 USD/ton of cane; and 3rd case, with cogeneration improvement and Bio-oil production, 40 USD/ton of cane. The energy use of SCAR and the introduction of FPM3 in the sugar mill are promising improvements that could result in a potential surplus of 80 kW he/ton of cane in-season, or 6 × 106 ton of Bio-oil (LHV=15 MJ/kg) for use off-season in a milling season of 4 million tons of raw sugar.

W. Alonso Pippo; P. Garzone; G. Cornacchia

2007-01-01T23:59:59.000Z

254

,,,,"Reasons that Made Residual Fuel Oil Unswitchable"  

U.S. Energy Information Administration (EIA) Indexed Site

5 Relative Standard Errors for Table 10.25;" 5 Relative Standard Errors for Table 10.25;" " Unit: Percents." ,,,,"Reasons that Made Residual Fuel Oil Unswitchable" " "," ",,,,,,,,,,,,," " ,,"Total Amount of ","Total Amount of","Equipment is Not","Switching","Unavailable ",,"Long-Term","Unavailable",,"Combinations of " "NAICS"," ","Residual Fuel Oil ","Unswitchable Residual","Capable of Using","Adversely Affects ","Alternative","Environmental","Contract ","Storage for ","Another","Columns F, G, " "Code(a)","Subsector and Industry","Consumed as a Fuel","Fuel Oil Fuel Use","Another Fuel","the Products","Fuel Supply","Restrictions(b)","in Place(c)","Alternative Fuels(d)","Reason","H, I, J, and K","Don't Know"

255

Residual stress profiles for mitigating fretting fatigue in gas turbine engine disks  

Science Journals Connector (OSTI)

The driving force for fretting fatigue in engine disks is the contact stresses generated by fretting of the blade and the disk surfaces in the attachment region. This paper examines the use of different residual compressive stress profiles to counteract the undesirable effects of contact stresses and to mitigate fretting fatigue. A global finite-element analysis of the disk blade assembly is first performed. The contact pressure and shear traction at the attachment region are extracted from the FEM results and used to compute the contact stress distribution. The contact stresses are then combined with the residual stresses and the bulk stresses. The overall stress distribution is then utilized in a probabilistic crack growth model to predict the risk of disk failure for a military engine under simulated loading conditions. The results are used to identify the minimum residual stress profile for mitigating fretting fatigue in engine disks.

Kwai S. Chan; Michael P. Enright; Jonathan P. Moody; Patrick J. Golden; Ramesh Chandra; Alan C. Pentz

2010-01-01T23:59:59.000Z

256

Method for using global optimization to the estimation of surface-consistent residual statics  

DOE Patents [OSTI]

An efficient method for generating residual statics corrections to compensate for surface-consistent static time shifts in stacked seismic traces. The method includes a step of framing the residual static corrections as a global optimization problem in a parameter space. The method also includes decoupling the global optimization problem involving all seismic traces into several one-dimensional problems. The method further utilizes a Stochastic Pijavskij Tunneling search to eliminate regions in the parameter space where a global minimum is unlikely to exist so that the global minimum may be quickly discovered. The method finds the residual statics corrections by maximizing the total stack power. The stack power is a measure of seismic energy transferred from energy sources to receivers.

Reister, David B. (Knoxville, TN); Barhen, Jacob (Oak Ridge, TN); Oblow, Edward M. (Knoxville, TN)

2001-01-01T23:59:59.000Z

257

The National Nuclear Laboratory's Approach to Processing Mixed Wastes and Residues - 13080  

SciTech Connect (OSTI)

The National Nuclear Laboratory (NNL) treats a wide variety of materials produced as by-products of the nuclear fuel cycle, mostly from uranium purification and fuel manufacture but also including materials from uranium enrichment and from the decommissioning of obsolete plants. In the context of this paper, treatment is defined as recovery of uranium or other activity from residues, the recycle of uranium to the fuel cycle or preparation for long term storage and the final disposal or discharge to the environment of the remainder of the material. NNL's systematic but flexible approach to residue assessment and treatment is described in this paper. The approach typically comprises up to five main phases. The benefits of a systematic approach to waste and residue assessments and processing are described in this paper with examples used to illustrate each phase of work. Benefits include early identification of processing routes or processing issues and the avoidance of investment in inappropriate and costly plant or processes. (authors)

Greenwood, Howard; Docrat, Tahera; Allinson, Sarah J.; Coppersthwaite, Duncan P.; Sultan, Ruqayyah; May, Sarah [National Nuclear Laboratory, Springfields, Preston, UK, PR4 0XJ (United Kingdom)] [National Nuclear Laboratory, Springfields, Preston, UK, PR4 0XJ (United Kingdom)

2013-07-01T23:59:59.000Z

258

Geochemical Modeling of Leaching from MSWI Air-Pollution-Control Residues  

Science Journals Connector (OSTI)

Abbreviations are:? gyp, gypsum; bar, barite; Ba(S,Cr)O4(1), XCr = 0.23; cal, calcite; ett, ettringite; leu, leucite; por, porlandite; qtz, quartz; wai, wairakite; wol, wollastonite. ... Comparing measured data with the solubilities of Al(OH)3, Al2O3, and ettringite (Ca6Al2(SO4)3OH12·26H2O), it was found that ettringite likely controlled Al leaching at pH-values above 9.5?10 for both residues. ... Al(OH)3, Al2O3, and ettringite have previously been identified in waste incineration APC residues (13, 22); however, only amorphous Al(OH)3 has been suggested to control leaching in nonstabilized APC residues (13, 18). ...

Thomas Astrup; Joris J. Dijkstra; Rob N. J. Comans; Hans A. van der Sloot; Thomas H. Christensen

2006-04-27T23:59:59.000Z

259

Recovery of Plutonium from Refractory Residues Using a Sodium Peroxide Pretreatment Process  

SciTech Connect (OSTI)

The recycle of plutonium from refractory residues is a necessary activity for the nuclear weapon production complex. Traditionally, high-fired plutonium oxide (PuO2) was leached from the residue matrix using a nitric acid/fluoride dissolving flowsheet. The recovery operations were time consuming and often required multiple contacts with fresh dissolving solution to reduce the plutonium concentration to levels where residual solids could be discarded. Due to these drawbacks, the development of an efficient process for the recovery of plutonium from refractory materials is desirable. To address this need, a pretreatment process was developed. The development program utilized a series of small-scale experiments to optimize processing conditions for the fusion process and demonstrate the plutonium recovery efficiency using ceramic materials developed as potential long-term storage forms for PuO2 and an incinerator ash from the Rocky Flats Environmental Technology Site (Rocky Flats) as te st materials.

Rudisill, T.S.

2003-10-23T23:59:59.000Z

260

Neutron diffraction determination of the residual stress redistribution in cracked autofrettaged tubing  

SciTech Connect (OSTI)

Neutron diffraction has been used to measure the residual stress distributions in uncracked and fatigue cracked rings taken from a high strength, low alloy steel autofrettage tube with a bore diameter of 60mm and a wall thickness of 32mm. Stresses were determined to a precision of {plus minus} 10MPa. Three crack sixes were examines. No appreciable stress redistribution was observed until the crack was grown into a region which originally contained tensile residual hoop stress. When this occurred an increase in residual hoop tension was observed ahead of the crick tip. Qualitative agreement was achieved between the measured hoop stress distribution and values predicted using a boundary element method. 9 refs., 12 figs.

Bourke, M.A. (Los Alamos National Lab., NM (USA)); McGillivray, H.J.; Webster, G.A. (Imperial Coll. of Science, Technology and Medicine, London (UK). Dept. of Mechanical Engineering); Webster, P.J. (Salford Univ. (UK). Dept. of Civil Engineering)

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Constant residual electrostatic electron plasma mode in Vlasov-Ampere system  

SciTech Connect (OSTI)

In a collisionless Vlasov-Poisson (V-P) electron plasma system, two types of modes for electric field perturbation exist: the exponentially Landau damped electron plasma waves and the initial-value sensitive ballistic modes. Here, the V-P system is modified slightly to a Vlasov-Ampere (V-A) system. A new constant residual mode is revealed. Mathematically, this mode comes from the Laplace transform of an initial electric field perturbation, and physically represents that an initial perturbation (e.g., external electric field perturbation) would not be damped away. Thus, this residual mode is more difficult to be damped than the ballistic mode.

Xie, Hua-sheng [Institute for Fusion Theory and Simulation, Department of Physics, Zhejiang University, Hangzhou 310027 (China)] [Institute for Fusion Theory and Simulation, Department of Physics, Zhejiang University, Hangzhou 310027 (China)

2013-11-15T23:59:59.000Z

262

Distribution and fate of technical chlordane and mirex residues in a central Texas aquatic ecosystem  

E-Print Network [OSTI]

DIST!(IDU!'IO;l AitlD l=A! E OF TEC;lN!CAL CNLOROAN. Al, 'D illREX RESIDUES IiN A CEiNTRAL TLXAS AQUA IC ECOSYSTEH A Thesis by HAROLD ERLE JANSSEN, JR. Submitted to the Graduate College o F Texas Anil Universi ty in partia1 fulfillment... of the requirement for the dec!ree of NASTER OF SC1El&CE Nay 1976 Najor Subject: Civil Engineering DISTRIBUTION AND FATE OF TECHNICAL CHLORDAI'lE AND llIREX RESIDUES IN A CENTRAl TEXAS AQUATIC ECOSYSTEM A Thesis by HAROLD ERLE JANSSEN, JR. Approved...

Janssen, Harold Erle

1976-01-01T23:59:59.000Z

263

Hanford Site Tank 241-C-108 Residual Waste Contaminant Release Models and Supporting Data  

SciTech Connect (OSTI)

This report presents the results of laboratory characterization, testing, and analysis for a composite sample (designated 20578) of residual waste collected from single-shell tank C-108 during the waste retrieval process after modified sluicing. These studies were completed to characterize concentration and form of contaminant of interest in the residual waste; assess the leachability of contaminants from the solids; and develop release models for contaminants of interest. Because modified sluicing did not achieve 99% removal of the waste, it is expected that additional retrieval processing will take place. As a result, the sample analyzed here is not expected to represent final retrieval sample.

Cantrell, Kirk J.; Krupka, Kenneth M.; Geiszler, Keith N.; Arey, Bruce W.; Schaef, Herbert T.

2010-06-18T23:59:59.000Z

264

Identification of the amino acid residues at the active site of E. coli carbamyl phosphate synthetase  

E-Print Network [OSTI]

IDENTIFICATION OF THE AMINO ACID RESIDUES AT THE ACTIVE SITE OF E. COLI CARBAMYL PHOSPHATE SYNTHETASE A Thesis by HEJUNG YOUN Submitted to the Office of Graduate Studies of Texas A8tM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1989 Major Subject: Chemistry IDENTIFICATION OF THE AMINO ACID RESIDUES AT THE ACTIVE SITE OF E. COLI CARBAMYL PHOSPHATE SYNTHETASE A Thesis by HEJUNG YOUN Approved as to style and content by: Frank M...

Youn, Hejung

1989-01-01T23:59:59.000Z

265

An active carbon catalyst prevents coke formation from asphaltenes during the hydrocracking of vacuum residue  

SciTech Connect (OSTI)

Active carbons were prepared by the steam activation of a brown coal char. The active carbon with mesopores showed greater adsorption selectivity for asphaltenes. The active carbon was effective at suppressing coke formation, even with the high hydrocracking conversion of vacuum residue. The analysis of the change in the composition of saturates, aromatics, resins, and asphaltenes in the cracked residue with conversion demonstrated the ability of active carbon to restrict the transformation of asphaltenes to coke. The active carbon that was richer in mesopores was presumably more effective at providing adsorption sites for the hydrocarbon free-radicals generated initially during thermal cracking to prevent them from coupling and polycondensing.

Fukuyama, H.; Terai, S. [Toyo Engineering Corp., Chiba (Japan). Technological Research Center

2007-07-01T23:59:59.000Z

266

Application of the residue number system to the matrix multiplication problem  

E-Print Network [OSTI]

Global Considerations 96 97 98 98 100 Design Comparison 6. 4. 1 Comparison Structure 101 102 TABLE OF CONTENTS (Continued) 6. d. 2 Time and Area Comparison VII CONCLUSION Page 103 105 7. 1 Contributions 7. 2 Future Research 106 108... to Residue 2. 4 The Chinese Remainder Theorem 2. 5 Sign Representation of a Residue Number 2. 6 Introduction to Matrix Multiplication 15 16 18 19 21 22 2. 7 The Matrix Multiplication Algorithm 2. 7. 1 The Multiply and Add Cell 2. 7. 2 Formulation...

Chard, Gary Franklin

2012-06-07T23:59:59.000Z

267

Approaching zero cellulose loss in cellulose nanocrystal (CNC) production: recovery and characterization of cellulosic solid residues (CSR) and CNC  

Science Journals Connector (OSTI)

This study demonstrated the potential of simultaneously recovering cellulosic solid residues (CSR) and producing cellulose nanocrystals (CNCs) by strong sulfuric acid hydrolysis to minimize cellulose loss to near...

Q. Q. Wang; J. Y. Zhu; R. S. Reiner; S. P. Verrill; U. Baxa; S. E. McNeil

2012-12-01T23:59:59.000Z

268

Use of Residual Solids from Pulp and Paper Mills for Enhancing Strength and Durability of Ready-Mixed Concrete  

SciTech Connect (OSTI)

This research was conducted to establish mixture proportioning and production technologies for ready-mixed concrete containing pulp and paper mill residual solids and to study technical, economical, and performance benefits of using the residual solids in the concrete. Fibrous residuals generated from pulp and paper mills were used, and concrete mixture proportions and productions technologies were first optimized under controlled laboratory conditions. Based on the mixture proportions established in the laboratory, prototype field concrete mixtures were manufactured at a ready-mixed concrete plant. Afterward, a field construction demonstration was held to demonstrate the production and placement of structural-grade cold-weather-resistant concrete containing residual solids.

Tarun R. Naik; Yoon-moon Chun; Rudolph N. Kraus

2003-09-18T23:59:59.000Z

269

Evaluation of the residual gas tolerance of homogeneous combustion processes with high exhaust-gas recirculation rates  

Science Journals Connector (OSTI)

The development of concepts with low emissions and fuel consumption for gasoline engines requires an early knowledge of the combustion process’ residual gas tolerance. At the Institute...

Dipl.-Ing. Dr. techn. Thomas Lauer…

2008-02-01T23:59:59.000Z

270

RCS pressure under reduced inventory conditions following a loss of residual heat removal  

SciTech Connect (OSTI)

The thermal-hydraulic response of a closed-reactor coolant system to loss of residual heat removal (RHR) cooling is investigated. The processes examined include: core coolant boiling and steam generator reflux condensation, pressure increase on the primary side, heat transfer mechanisms on the steam generator primary and secondary sides, and effects of noncondensible gas on heat transfer processes.

Palmrose, D.E.; Hughes, E.D.; Johnsen, G.W.

1992-08-01T23:59:59.000Z

271

Molecular gas in early-type galaxies: Fuel for residual star formation  

E-Print Network [OSTI]

Abstract: Molecular gas in early-type galaxies: Fuel for residual star formation Timothy A. Davis Survey 2. The ATLAS3D CARMA Survey 3. Kinematic Misalignments 4. Origin of the molecular gas The ATLAS3D is to determine how (major and minor) mergers, gas, star formation and feedback affect the transformation

Bureau, Martin

272

Cold drawn steel wires--processing, residual stresses and ductility Part II: Synchrotron and neutron diffraction  

E-Print Network [OSTI]

Cold drawn steel wires--processing, residual stresses and ductility Part II: Synchrotron Received in final form 29 September 2005 ABSTRACT Cold drawing of steel wires leads to an increase proposed that cold drawing would induce a phase transformation of the steel, possibly a martensitic

273

PROTEIN FOLD RECOGNITION USING RESIDUE-BASED ALIGNMENTS OF SEQUENCE AND SECONDARY STRUCTURE  

E-Print Network [OSTI]

PROTEIN FOLD RECOGNITION USING RESIDUE-BASED ALIGNMENTS OF SEQUENCE AND SECONDARY STRUCTURE Zafer methods [3,4]. Index Terms- protein fold recognition, secondary structure alignment, amino acid alignment &sabanciuniv.edu culated for each sequence-structure alignment. Protein fold recog- nition problem can

Erdogan, Hakan

274

Estimates of the Loss of Main-Chain Conformational Entropy of Different Residues on Protein Folding  

E-Print Network [OSTI]

Estimates of the Loss of Main-Chain Conformational Entropy of Different Residues on Protein Folding energy of protein folding is not well understood. We have developed empirical scales for the loss; protein folding; pro- tein engineering INTRODUCTION When a protein folds into a compact globule, the resi

Pal, Debnath

275

Logging Residue Volumes and Characteristics following Integrated Roundwood and Energy-Wood  

E-Print Network [OSTI]

considered waste material. In recent years, however, the reemergence of the bioenergy industry has revived the market for these residues, and demand for this ma- terial is likely to increase with increasing oil are projected to provide one-third of the billion-ton biomass feedstock needed for the emerging bioenergy

Wagner, Robert G.

276

Investigation of residual stresses induced during the selective laser melting process  

E-Print Network [OSTI]

jean-claude.boyer@insa-lyon.fr Keywords: Selective laser melting, layer additional method, Residual stresses. Abstract. The selective laser melting process (SLM), belonging to the family of additive manufacturing processes, can create complex geometry parts from a CAD file. Previously, only prototypes were

Paris-Sud XI, Université de

277

Nuclear reactor with makeup water assist from residual heat removal system  

DOE Patents [OSTI]

A pressurized water nuclear reactor uses its residual heat removal system to make up water in the reactor coolant circuit from an in-containment refueling water supply during staged depressurization leading up to passive emergency cooling by gravity feed from the refueling water storage tank, and flooding of the containment building. When depressurization commences due to inadvertence or a manageable leak, the residual heat removal system is activated manually and prevents flooding of the containment when such action is not necessary. Operation of the passive cooling system is not impaired. A high pressure makeup water storage tank is coupled to the reactor coolant circuit, holding makeup coolant at the operational pressure of the reactor. The staged depressurization system vents the coolant circuit to the containment, thus reducing the supply of makeup coolant. The level of makeup coolant can be sensed to trigger opening of successive depressurization conduits. The residual heat removal pumps move water from the refueling water storage tank into the coolant circuit as the coolant circuit is depressurized, preventing reaching the final depressurization stage unless the makeup coolant level continues to drop. The residual heat removal system can also be coupled in a loop with the refueling water supply tank, for an auxiliary heat removal path.

Corletti, Michael M. (New Kensington, PA); Schulz, Terry L. (Murrysville, PA)

1993-01-01T23:59:59.000Z

278

SOLID PHASE MICROEXTRACTION SAMPLING OF FIRE DEBRIS RESIDUES IN THE PRESENCE OF RADIONUCLIDE SURROGATE METALS  

SciTech Connect (OSTI)

The Federal Bureau of Investigation (FBI) Laboratory currently does not have on site facilities for handling radioactive evidentiary materials and there are no established FBI methods or procedures for decontaminating highly radioactive fire debris (FD) evidence while maintaining evidentiary value. One experimental method for the isolation of FD residue from radionuclide metals involves using solid phase microextraction (SPME) fibers to remove the residues of interest. Due to their high affinity for organics, SPME fibers should have little affinity for most (radioactive) metals. The focus of this research was to develop an examination protocol that was applicable to safe work in facilities where high radiation doses are shielded from the workers (as in radioactive shielded cells or ''hot cells''). We also examined the affinity of stable radionuclide surrogate metals (Co, Ir, Re, Ni, Ba, Cs, Nb, Zr and Nd) for sorption by the SPME fibers. This was done under exposure conditions that favor the uptake of FD residues under conditions that will provide little contact between the SPME and the FD material (such as charred carpet or wood that contains commonly-used accelerants). Our results from mass spectrometric analyses indicate that SPME fibers show promise for use in the room temperature head space uptake of organic FD residue (namely, diesel fuel oil, kerosene, gasoline and paint thinner) with subsequent analysis by gas chromatography (GC) with mass spectrometric (MS) detection. No inorganic forms of ignitable fluids were included in this study.

Duff, M; Keisha Martin, K; S Crump, S

2007-03-23T23:59:59.000Z

279

CSER 96-027: storage of cemented plutonium residue containers in 55 gallon drums  

SciTech Connect (OSTI)

A nuclear criticality safety analysis has been performed for the storage of residual plutonium cementation containers, produced at the Plutonium Finishing Plant, in 55 gallon drums. This CSER increases the limit of total plutonium stored in each 55 gallon drum from 100 to 200 grams.

Watson, W.T.

1997-01-20T23:59:59.000Z

280

Relationship between Hot Spot Residues and Ligand Binding Hot Spots in Protein-Protein Interfaces  

E-Print Network [OSTI]

, while identification of a hot spot by alanine scanning establishes the potential to generate substantial, termed "hot spots", that comprise the subset of residues that contribute the bulk of the binding free proposed as prime targets for drug binding.1,4 The established approach to the identification of such hot

Vajda, Sandor

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Repeat Brachytherapy for Patients With Residual or Recurrent Tumors of Oral Cavity  

SciTech Connect (OSTI)

Purpose: To analyze data from patients receiving repeat brachytherapy (re-BT) for the treatment of residual or recurrent tumor in the oral cavity. Methods and Materials: Between January 2003 and December 2007, 62 patients who had undergone definitive BT as an initial treatment of oral cancer subsequently underwent re-BT for the treatment of residual or recurrent tumors at the diagnostic radiology and oncology department (Tokyo Medical and Dental University Hospital). Re-BT was performed 0.9-73 months (median, 5.7) after the initial BT. Au-198 grains were used as the re-BT source in all 62 patients, and an area of 0.8-6.3 cm{sup 2} (median, 3.1) was permanently irradiated with 60-110 Gy (median, 83) according to the system of Paterson-Parker. Results: The 2-year local control and overall survival rate was 53% and 66%, respectively, and local control significantly affected overall survival. Both local control and overall survival were affected by the initial tumor characteristics and the macroscopic appearance of the residual or recurrent tumor. Grade 3 or 4 complications were seen in 5 patients. The incidence of mandibular and mucosal complications was significantly related to a biologic effective dose of {alpha}/{beta} of 3 Gy to the surface of the gingiva and mucosa, respectively. Conclusion: Re-BT using Au-198 grains for the treatment of residual or recurrent tumor after definitive BT in the oral cavity is effective and well tolerated.

Yoshimura, Ryo-ichi, E-mail: ysmrmrad@tmd.ac.jp [Department of Diagnostic Radiology and Oncology, Tokyo Medical and Dental University, Tokyo (Japan); Shibuya, Hitoshi; Hayashi, Keiji; Nakagawa, Keiko; Toda, Kazuma [Department of Diagnostic Radiology and Oncology, Tokyo Medical and Dental University, Tokyo (Japan); Watanabe, Hiroshi [Department of Oral and Maxillofacial Radiology, Tokyo Medical and Dental University, Tokyo (Japan); Kaida, Atushi; Miura, Masahiko [Department of Oral Radiation Oncology, Tokyo Medical and Dental University, Tokyo (Japan)

2012-07-15T23:59:59.000Z

282

Variance Decomposition Sensitivity Analysis of a Passive Residual Heat Removal System Model  

E-Print Network [OSTI]

for improved reliability and safety. Sensitivity analysis can provide relevant insights on the responseVariance Decomposition Sensitivity Analysis of a Passive Residual Heat Removal System Model YU Yua Removal system (RHRs) in the High Temperature Gas-Cooled Reactor (HTGR). Keywords: Uncertainty

Paris-Sud XI, Université de

283

Determination of residual monomers resulting from the chemical polymerization process of dental materials  

SciTech Connect (OSTI)

The residual monomer present in post-polymerized dental materials encourages premature degradation of the reconstructed tooth. That is why the residual monomer should be quantified in a simple, fast, accurate and reproducible manner. In our work we propose such an approach for accurate determination of the residual monomer in dental materials which is based on low-field nuclear magnetic resonance (NMR) relaxometry. The results of the NMR approach are compared with those of the high performance liquid chromatography (HPLC) technique. The samples under study contain the main monomers (2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane and triethylene glycol dimethacrylate) constituting the liquid phase of most dental materials and an initiator. Two samples were analyzed with different ratios of chemical initiation systems: N,N-dimethyl-p-toluide: benzoyl peroxide (1:2 and 0.7:1.2). The results obtained by both techniques highlight that by reducing the initiator the polymerization process slows down and the amount of residual monomer reduces. This prevents the premature degradation of the dental fillings and consequently the reduction of the biomaterial resistance.

Boboia, S. [Babes Bolyai University, Raluca Ripan Chemistry Research Institute, Department of Polymer Composites, 400294 Cluj-Napoca, Romania and Technical University of Cluj-Napoca, Physics and Chemistry Department, 400114 Cluj-Napoca (Romania)] [Babes Bolyai University, Raluca Ripan Chemistry Research Institute, Department of Polymer Composites, 400294 Cluj-Napoca, Romania and Technical University of Cluj-Napoca, Physics and Chemistry Department, 400114 Cluj-Napoca (Romania); Moldovan, M. [Babes Bolyai University, Raluca Ripan Chemistry Research Institute, Department of Polymer Composites, 400294 Cluj-Napoca (Romania)] [Babes Bolyai University, Raluca Ripan Chemistry Research Institute, Department of Polymer Composites, 400294 Cluj-Napoca (Romania); Ardelean, I. [Technical University of Cluj-Napoca, Physics and Chemistry Department, 400114 Cluj-Napoca (Romania)] [Technical University of Cluj-Napoca, Physics and Chemistry Department, 400114 Cluj-Napoca (Romania)

2013-11-13T23:59:59.000Z

284

Engineered Heart Tissue Enables Study of Residual Undifferentiated Embryonic Stem Cell Activity in a  

E-Print Network [OSTI]

ARTICLE Engineered Heart Tissue Enables Study of Residual Undifferentiated Embryonic Stem Cell, Canada, M5S 3G9 6 Heart and Stroke/Richard Lewar Centre of Excellence, Toronto, Ontario, Canada, M5S 3G9 cell survival. As an alternative, we have used an engineered heart tissue (EHT) based on neonatal rat

Zandstra, Peter W.

285

A Fuzzy Formal Logic for Interval-valued Residuated Lattices B. Van Gasse  

E-Print Network [OSTI]

that this truth- functional approach, along with the residu- ation principle, has some consequences that seem truth values instead of only `true' and `false'. A wide range of such logics were introduced cases it may be preferable to work with graded truth values, e.g. for propositions like `a cat

Gent, Universiteit

286

From residue matching patterns to protein folding topographies: General model and bovine  

E-Print Network [OSTI]

From residue matching patterns to protein folding topographies: General model and bovine pancreatic-grained model for protein-folding dynamics is introduced based on a discretized representation of torsional, pattern recognition, and general characteristics of protein folding kinetics. Topology here implies

Berry, R. Stephen

287

Incineration of Residue from Paint Stripping Operations Using Plastic Media Blasting  

E-Print Network [OSTI]

i INCINERATION OF RESIDUE FROH PAINT STRIPPING OPERATIONS USING PLASTIC MEDIA BLASTING J. E. HELT N. MALLYA Group Leader Chemist Chemical Technology Division Chemical Technology Division Argonne National Laboratory Argonne National... Laboratory Argonne, Illinois Argonne, Illinois ABSTRACT A preliminary investigation has been performed on the environmental consequences of incinerating plastic-media-blasting (PHB) wastes from paint removal operations. PHB is similar to sandblasting...

Helt, J. E.; Mallya, N.

288

Hydrodesulfurization and hydrodemetallization of different origin vacuum residues: New modeling approach  

E-Print Network [OSTI]

, such as sulfur or metals. Residue hydrotreatment in fixed beds, under high hydrogen pressure can achieve high,version1-13Jun2014 Author manuscript, published in "Fuel 129 (2014) 267-277" #12;2 hydrotreatment kinetic Model, Hydrodesulfurization, Hydrodemetallization, reactor modeling 1. INTRODUCTION Upgrading petroleum

Boyer, Edmond

289

PETROPHYSICS 217June 2011 Assessment of Residual Hydrocarbon Saturation with the Combined  

E-Print Network [OSTI]

, and neutron logs. Initial estimates of residual hydrocarbon saturation and parametric relative permeability refine initial estimates of water saturation, porosity, and permeability until securing a good match and water saturation in capillary equilibrium. Application examples are described for the cases of tight

Torres-Verdín, Carlos

290

Nutrient release from combustion residues of two contrasting herbaceous vegetation types  

E-Print Network [OSTI]

(muffle and flame burning) to combust herbaceous biomass from contrasting nutrient level sites to estimate caused by a fire is the combustion and charring of vegetation. Both C and N contained in plant biomassNutrient release from combustion residues of two contrasting herbaceous vegetation types Benjamin A

Florida, University of

291

Evaluation of Patient Residual Deviation and Its Impact on Dose Distribution for Proton Radiotherapy  

SciTech Connect (OSTI)

The residual deviations after final patient repositioning based on bony anatomy and the impact of such deviations on the proton dose distributions was investigated. Digitally reconstructed radiographs (DRRs) and kilovoltage (kV) 'portal verification' images from 10 patients treated with passively scattered proton radiotherapy was used to estimate the residual deviation. These changes were then applied to the location of isocenter points that, in effect, moved the isocenter relative to the apertures and compensators. A composite verification plan was obtained and compared with the original clinical treatment plan to evaluate any changes in dose distributions. The residual deviations were fitted to a Gaussian distribution with {mu} = -0.9 {+-} 0.1 mm and {sigma} = 2.55 {+-} 0.07 mm. The dose distribution showed under- and overcovered dose spots with complex dose distributions both in the target volumes and in the organs at risk. In some cases, this amounts to 63.5% above the intended clinical plan. Although patient positioning is carefully verified before treatment delivery and setup uncertainties are accounted for by using compensator smearing and aperture margins, a residual shift in a patient's position can considerably affect the dose distribution.

Arjomandy, Bijan, E-mail: arjomandy_2000@yahoo.com

2011-10-01T23:59:59.000Z

292

Polynomial Maps over p -Adics and Residual Properties of Mapping Tori of Group Endomorphisms  

Science Journals Connector (OSTI)

......Since has a 5-subgroup of index 6, has a 5-subgroup of index at most some constant M 2...homomorphisms , H has a subgroup of index at most M 2 which is residually...not in but in the p-adic completion of that group. Here we use......

Alexander Borisov; Mark Sapir

2009-01-01T23:59:59.000Z

293

FISHERY WASTE EFFLUENTS: A METHOD TO DETERMINE RELATIONSHIPS BETWEEN CHEMICAL OXYGEN DEMAND AND RESIDUE  

E-Print Network [OSTI]

FISHERY WASTE EFFLUENTS: A METHOD TO DETERMINE RELATIONSHIPS BETWEEN CHEMICAL OXYGEN DEMAND effluents, especially for total suspended and settleable solids, and oil and grease. The relationship between chemical oxygen demand and residue was determined on a limited number of samples from four types

294

Stereochemistry Determination by Powder X-ray Diffraction Analysis and NMR Spectroscopy Residual Dipolar Couplings  

SciTech Connect (OSTI)

A matter of technique: For a new steroidal lactol, jaborosalactol 24 (1), isolated from Jaborosa parviflora, NMR spectroscopy residual dipolar couplings and powder X-ray diffraction analysis independently gave the same stereochemistry at C23-C26. Conventional NMR spectroscopic techniques, such as NOE and {sup 3}J coupling-constant analysis failed to unambiguously determine this stereochemistry.

Garcia, M.; Pagola, S; Navarro-Vasquez, A; Phillips, D; Gayathri, C; Krakauer, H; Stephens, P; Nicotra, V; Gil, R

2009-01-01T23:59:59.000Z

295

The Effect of Weld Residual Stress on Life of Used Nuclear Fuel Dry Storage Canisters  

SciTech Connect (OSTI)

With the elimination of Yucca Mountain as the long-term storage facility for spent nuclear fuel in the United States, a number of other storage options are being explored. Currently, used fuel is stored in dry-storage cask systems constructed of steel and concrete. It is likely that used fuel will continue to be stored at existing open-air storage sites for up to 100 years. This raises the possibility that the storage casks will be exposed to a salt-containing environment for the duration of their time in interim storage. Austenitic stainless steels, which are used to construct the canisters, are susceptible to stress corrosion cracking (SCC) in chloride-containing environments if a continuous aqueous film can be maintained on the surface and the material is under stress. Because steel sensitization in the canister welds is typically avoided by avoiding post-weld heat treatments, high residual stresses are present in the welds. While the environment history will play a key role in establishing the chemical conditions for cracking, weld residual stresses will have a strong influence on both crack initiation and propagation. It is often assumed for modeling purposes that weld residual stresses are tensile, high and constant through the weld. However, due to the strong dependence of crack growth rate on stress, this assumption may be overly conservative. In particular, the residual stresses become negative (compressive) at certain points in the weld. The ultimate goal of this research project is to develop a probabilistic model with quantified uncertainties for SCC failure in the dry storage casks. In this paper, the results of a study of the residual stresses, and their postulated effects on SCC behavior, in actual canister welds are presented. Progress on the development of the model is reported.

Ronald G. Ballinger; Sara E. Ferry; Bradley P. Black; Sebastien P. Teysseyre

2013-08-01T23:59:59.000Z

296

IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 22, NO. 4, NOVEMBER 2007 1563 Transmission-Constrained Residual Demand  

E-Print Network [OSTI]

, IEEE Abstract--The residual demand derivative plays a central role in constructing the best response is obtained straightforwardly by taking the derivative of the residual demand function with respect to price elastic supplies/demands at some buses in the system. We verified our results in three examples: a two

Baldick, Ross

297

Mobilisation of arsenic from bauxite residue (red mud) affected soils: Effect of pH and redox conditions  

E-Print Network [OSTI]

). Typically, it comprises residual iron oxides, quartz, sodium aluminosilicates, titanium dioxide, calciumMobilisation of arsenic from bauxite residue (red mud) affected soils: Effect of pH and redox elements, including arsenic. Aerobic and anaer- obic batch experiments were prepared using soils from near

Burke, Ian

298

Microbial community response to a release of neat ethanol onto residual hydrocarbons in a pilot-scale  

E-Print Network [OSTI]

Microbial community response to a release of neat ethanol onto residual hydrocarbons in a pilot ethanol release (E100, 76 l) onto residual hydrocarbons in sandy soil was evaluated in a continuous-flow 8 shifts were assessed using quantitative real-time PCR analysis. High ethanol concentrations

Alvarez, Pedro J.

299

WEEE and portable batteries in residual household waste: Quantification and characterisation of misplaced waste  

SciTech Connect (OSTI)

Highlights: • We analyse 26.1 Mg of residual waste from 3129 Danish households. • We quantify and characterise misplaced WEEE and portable batteries. • We compare misplaced WEEE and batteries to collection through dedicated schemes. • Characterisation showed that primarily small WEEE and light sources are misplaced. • Significant amounts of misplaced batteries were discarded as built-in WEEE. - Abstract: A total of 26.1 Mg of residual waste from 3129 households in 12 Danish municipalities was analysed and revealed that 89.6 kg of Waste Electrical and Electronic Equipment (WEEE), 11 kg of batteries, 2.2 kg of toners and 16 kg of cables had been wrongfully discarded. This corresponds to a Danish household discarding 29 g of WEEE (7 items per year), 4 g of batteries (9 batteries per year), 1 g of toners and 7 g of unidentifiable cables on average per week, constituting 0.34% (w/w), 0.04% (w/w), 0.01% (w/w) and 0.09% (w/w), respectively, of residual waste. The study also found that misplaced WEEE and batteries in the residual waste constituted 16% and 39%, respectively, of what is being collected properly through the dedicated special waste collection schemes. This shows that a large amount of batteries are being discarded with the residual waste, whereas WEEE seems to be collected relatively successfully through the dedicated special waste collection schemes. Characterisation of the misplaced batteries showed that 20% (w/w) of the discarded batteries were discarded as part of WEEE (built-in). Primarily alkaline batteries, carbon zinc batteries and alkaline button cell batteries were found to be discarded with the residual household waste. Characterisation of WEEE showed that primarily small WEEE (WEEE directive categories 2, 5a, 6, 7 and 9) and light sources (WEEE directive category 5b) were misplaced. Electric tooth brushes, watches, clocks, headphones, flashlights, bicycle lights, and cables were items most frequently found. It is recommended that these findings are taken into account when designing new or improving existing special waste collection schemes. Improving the collection of WEEE is also recommended as one way to also improve the collection of batteries due to the large fraction of batteries found as built-in. The findings in this study were comparable to other western European studies, suggesting that the recommendations made in this study could apply to other western European countries as well.

Bigum, Marianne, E-mail: mkkb@env.dtu.dk [Technical University of Denmark, Department of Environmental Engineering, Miljøvej 113, 2500 Kgs. Lyngby (Denmark); Petersen, Claus, E-mail: claus_petersen@econet.dk [Econet A/S, Strandboulevarden 122, 5, 2100 København Ø (Denmark); Christensen, Thomas H., E-mail: thho@env.dtu.dk [Technical University of Denmark, Department of Environmental Engineering, Miljøvej 113, 2500 Kgs. Lyngby (Denmark); Scheutz, Charlotte, E-mail: chas@env.dtu.dk [Technical University of Denmark, Department of Environmental Engineering, Miljøvej 113, 2500 Kgs. Lyngby (Denmark)

2013-11-15T23:59:59.000Z

300

Rocky Flats Environmental Technology Site Mixed Residue Consent Order, September 24, 1999 Summary  

Broader source: Energy.gov (indexed) [DOE]

9-09-24-01 9-09-24-01 State Colorado Agreement Type Consent Order Legal Driver(s) RCRA Scope Summary Substitute this Consent Order for the MR Consent Order; establish requirements for mixed residues management. Parties DOE ; Kaiser-Hill Company, LLC; Safe Sites of Colorado, LLC; Rocky Mountain Remediation Services, LLC; Colorado Department of Public Health and Environment Date 9/24/1999 SCOPE * Substitute this Consent Order for the MR Consent Order by modifying in its entirety the Settlement Agreement and Compliance Order on Consent, number 93-04-23-01, (the "MR Consent Order"). * Establish requirements for certain activities involving mixed residues management. * Establish enforceable commitment dates. ESTABLISHING MILESTONES * Provisions regarding enforceable commitment dates and the procedures to add

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Effects of residues from municipal solid waste landfill on corn yield and heavy metal content  

SciTech Connect (OSTI)

The effects of residues from municipal solid waste landfill, Khon Kaen Municipality, Thailand, on corn (Zea mays L.) yield and heavy metal content were studied. Field experiments with randomized complete block design with five treatments (0, 20, 40, 60 and 80% v/v of residues and soil) and four replications were carried out. Corn yield and heavy metal contents in corn grain were analyzed. Corn yield increased by 50, 72, 85 and 71% at 20, 40, 60 and 80% treatments as compared to the control, respectively. All heavy metals content, except cadmium, nickel and zinc, in corn grain were not significantly different from the control. Arsenic, cadmium and zinc in corn grain were strongly positively correlated with concentrations in soil. The heavy metal content in corn grain was within regulated limits for human consumption.

Prabpai, S. [Suphan Buri Campus Establishment Project, Kasetsart University, 50 U Floor, Administrative Building, Paholyothin Road, Jatujak, Bangkok 10900 (Thailand)], E-mail: s.prabpai@hotmail.com; Charerntanyarak, L. [Department of Epidemiology, Faculty of Public Health, Khon Kaen University, Khon Kaen 40002 (Thailand)], E-mail: lertchai@kku.ac.th; Siri, B. [Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002 (Thailand)], E-mail: boonmee@kku.ac.th; Moore, M.R. [The University of Queensland, The National Research Center for Environmental Toxicology, 39 Kessels Road, Coopers Plans, Brisbane, Queensland 4108 (Australia)], E-mail: m.moore@uq.edu.au; Noller, Barry N. [The University of Queensland, Centre for Mined Land Rehabilitation, Brisbane, Queensland 4072 (Australia)], E-mail: b.noller@uq.edu.au

2009-08-15T23:59:59.000Z

302

Characteristics of naphthenic and paraffinic hydrocarbons of residual oil from West Siberian crudes  

SciTech Connect (OSTI)

This article examines the naphthenic/paraffinic hydrocarbons segregated by liquid chromatography from a residual oil after removal of the resins and solid hydrocarbons. The studied hydrocarbons were fractionated on the basis of molecular weight (by molecular distillation) and on the basis of the content of rings (by thermal diffusion separation in a laboratory column). The results of mass-spectrometric analysis indicate that the first fraction consists mainly of isoparaffins and naphthenes with few rings. The polycyclic condensed naphthenes are concentrated in the last fraction. The content of isoparaffins drops off and the content of condensed polycyclic naphthenic structures increases from the second fraction to the next to the last. It is concluded that the naphthenic/paraffinic hydrocarbons of the residual oil from mixed West Siberian crudes have a relatively narrow composition and therefore have similar physicochemical properties.

Detusheva, E.P.; Khramtsova, L.P.; Muchinskii, T.D.; Shkol'nikov, V.M.

1984-05-01T23:59:59.000Z

303

Method for improving x-ray diffraction determinations of residual stress in nickel-base alloys  

DOE Patents [OSTI]

A process for improving the technique of measuring residual stress by x-ray diffraction in pieces of nickel-base alloys is discussed. Part of a predetermined area of the surface of a nickel-base alloy is covered with a dispersion. This exposes the covered and uncovered portions of the surface of the alloy to x-rays by way of an x-ray diffractometry apparatus, making x-ray diffraction determinations of the exposed surface, and measuring the residual stress in the alloy based on these determinations. The dispersion is opaque to x-rays and serves a dual purpose, since it masks off unsatisfactory signals such that only a small portion of the surface is measured, and it supplies an internal standard by providing diffractogram peaks comparable to the peaks of the nickel alloy so that the alloy peaks can be very accurately located regardless of any sources of error external to the sample. 2 figs.

Berman, R.M.; Cohen, I.

1988-04-26T23:59:59.000Z

304

Gauge fixing and residual symmetries in gauge/gravity theories with extra dimensions  

SciTech Connect (OSTI)

We study compactified pure gauge/gravitational theories with gauge-fixing terms and show that these theories possess quantum mechanical supersymmetriclike symmetries between unphysical degrees of freedom. These residual symmetries are global symmetries and generated by quantum mechanical N=2 supercharges. Also, we establish a new one-parameter family of gauge choices for higher-dimensional gravity and calculate as a check of its validity one graviton exchange amplitude in the lowest tree-level approximation. We confirm that the result is indeed {xi} independent and the cancellation of the {xi} dependence is ensured by the residual symmetries. We also give a simple interpretation of the van Dam-Veltman-Zakharov discontinuity, which arises in the lowest tree-level approximation, from the supersymmetric point of view.

Lim, C. S.; Sakamoto, Makoto [Department of Physics, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501 (Japan); Nagasawa, Tomoaki [Anan National College of Technology, 265 Aoki, Minobayashi, Anan 774-0017 (Japan); Ohya, Satoshi; Sakamoto, Kazuki [Graduate School of Science, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501 (Japan)

2008-03-15T23:59:59.000Z

305

Gauge-Fixing and Residual Symmetries in Gauge/Gravity Theories with Extra Dimensions  

E-Print Network [OSTI]

We study compactified pure gauge/gravitational theories with gauge-fixing terms and show that these theories possess quantum mechanical SUSY-like symmetries between unphysical degrees of freedom. These residual symmetries are global symmetries and generated by quantum mechanical N=2 supercharges. Also, we establish new one-parameter family of gauge choices for higher-dimensional gravity, and calculate as a check of its validity one graviton exchange amplitude in the lowest tree-level approximation. We confirm that the result is indeed $\\xi$-independent and the cancellation of the $\\xi$-dependence is ensured by the residual symmetries. We also give a simple interpretation of the vDVZ-discontinuity, which arises in the lowest tree-level approximation, from the supersymmetric point of view.

C. S. Lim; Tomoaki Nagasawa; Satoshi Ohya; Kazuki Sakamoto; Makoto Sakamoto

2008-01-06T23:59:59.000Z

306

Gauge-Fixing and Residual Symmetries in Gauge/Gravity Theories with Extra Dimensions  

E-Print Network [OSTI]

We study compactified pure gauge/gravitational theories with gauge-fixing terms and show that these theories possess quantum mechanical SUSY-like symmetries between unphysical degrees of freedom. These residual symmetries are global symmetries and generated by quantum mechanical N=2 supercharges. Also, we establish new one-parameter family of gauge choices for higher-dimensional gravity, and calculate as a check of its validity one graviton exchange amplitude in the lowest tree-level approximation. We confirm that the result is indeed $\\xi$-independent and the cancellation of the $\\xi$-dependence is ensured by the residual symmetries. We also give a simple interpretation of the vDVZ-discontinuity, which arises in the lowest tree-level approximation, from the supersymmetric point of view.

Lim, C S; Ohya, Satoshi; Sakamoto, Kazuki; Sakamoto, Makoto

2008-01-01T23:59:59.000Z

307

Analysis in support of storage of residues in the pipe overpack container  

SciTech Connect (OSTI)

The disposition of the large backlog of plutonium residues at the Rocky Flats Environmental Technology Site (Rocky Flats) will require interim storage and subsequent shipment to a waste repository. Current plans call for disposal at the Waste Isolation Pilot Plant (WIPP) and the transportation to WIPP in the TRUPACT-II. The transportation phase will require the residues to be packaged in a container that is more robust than a standard 55 gallon waste drum. Rocky Flats has designed the Pipe Overpack Container to meet this need. The potential for damage to this container during onsite storage in unhardened structures for several hypothetical accident scenarios has been addressed using finite element calculations. This report will describe the initial conditions and assumptions for these analyses and the predicted response of the container.

Ludwigsen, J.S.; Ammerman, D.J.; Radloff, H.D.

1998-04-01T23:59:59.000Z

308

Long-term risk stabilization of the Rocky Flats Plant residues  

SciTech Connect (OSTI)

The liquid and solid residues continue to be a concern at Rocky Flats, primarily due to safety aspects of long-term storage and of the need for processing them into a form for ultimate disposal. Currently, Rocky Flats is processing the low-level solutions from bottles and tanks by direct cementation for storage and disposal. Plans for actinide precipitation of the high-level solutions are being finalized with an anticipated completion date of 2 to 3 yr. The solid residues present a more difficult challenge because of the numerous forms that these exist. Rocky Flats is developing several strategies to handle these materials for safe long-term storage and eventual disposal.

Melberg, T.A. [Dept. of Energy, Golden, CO (United States)

1994-12-31T23:59:59.000Z

309

Technoeconomic Comparison of Biofuels: Ethanol, Methanol, and Gasoline from Gasification of Woody Residues (Presentation)  

SciTech Connect (OSTI)

This presentation provides a technoeconomic comparison of three biofuels - ethanol, methanol, and gasoline - produced by gasification of woody biomass residues. The presentation includes a brief discussion of the three fuels evaluated; discussion of equivalent feedstock and front end processes; discussion of back end processes for each fuel; process comparisons of efficiencies, yields, and water usage; and economic assumptions and results, including a plant gate price (PGP) for each fuel.

Tarud, J.; Phillips, S.

2011-08-01T23:59:59.000Z

310

CO2 Sequestration by Direct Gas?Solid Carbonation of Air Pollution Control (APC) Residues  

Science Journals Connector (OSTI)

CO2 Sequestration by Direct Gas?Solid Carbonation of Air Pollution Control (APC) Residues ... Furthermore, because fossil fuels are projected to be a dominant energy resource in the 21st century,1 technologies for sequestering emissions from fossil fuel combustion in a safe and definitive manner are being developed and implemented. ... According to these authors, the solution containing free calcium could then be used in a carbonation process for capturing CO2 directly from air. ...

Renato Baciocchi; Alessandra Polettini; Raffaella Pomi; Valentina Prigiobbe; Viktoria Nikulshina Von Zedwitz; Aldo Steinfeld

2006-07-07T23:59:59.000Z

311

Engineering evaluation of alternatives for the disposition of Niagara Falls Storage Site, its residues and wastes  

SciTech Connect (OSTI)

The final disposition scenarios selected by DOE for assessment in this document are consistent with those stated in the Notice of Intent to prepare an Environmental Impact Statement (EIS) for the Niagara Falls Storage Site (NFSS) (DOE, 1983d) and the modifications to the alternatives resulting from the public scoping process. The scenarios are: take no action beyond interim remedial measures other than maintenance and surveillance of the NFSS; retain and manage the NFSS as a long-term waste management facility for the wastes and residues on the site; decontaminate, certify, and release the NFSS for other use, with long-term management of the wastes and residues at other DOE sites; and partially decontaminate the NFSS by removal and transport off site of only the more radioactive residues, and upgrade containment of the remaining wastes and residues on site. The objective of this document is to present to DOE the conceptual engineering, occupational radiation exposure, construction schedule, maintenance and surveillance requirements, and cost information relevant to design and implementation of each of the four scenarios. The specific alternatives within each scenario used as the basis for discussion in this document were evaluated on the bases of engineering considerations, technical feasibility, and regulatory requirements. Selected alternatives determined to be acceptable for each of the four final disposition scenarios for the NFSS were approved by DOE to be assessed and costed in this document. These alternatives are also the subject of the EIS for the NFSS currently being prepared by Argonne National Laboratory (ANL). 40 figures, 38 tables.

Not Available

1984-01-01T23:59:59.000Z

312

Production-scale plutonium-neptunium separation and residue recovery at Rocky Flats Plant  

SciTech Connect (OSTI)

An anion exchange process to recover plutonium from plutonium - 0.5% neptunium residues has been investigated on a production scale. The plutonium was effectively recovered and separated from neptunium using Rohm and Haas Amberlite IRA-938 (20 to 50 mesh) macroreticular anion exchange resin. During this process, 58.3 kg of plutonium containing less than 100 g Np/g Pu has been recovered.

Martella, L.L.; Guyer, R.H.; Leak, W.C.; Thomas, R.L. (eds.)

1987-05-26T23:59:59.000Z

313

Cofiring Lignite with Hazelnut Shell and Cotton Residue in a Pilot-Scale Fluidized Bed Combustor  

Science Journals Connector (OSTI)

The absence of studies on cofiring of indigenous lignite with hazelnut shell/cotton residue blends in fluid bed combustors on one hand and the recent trend in utilization of biomass with local reserves in industry and utility boilers on the other necessitate investigation of combustion and emission characteristics of these fuel blends. ... However, the effect of recycle on gaseous emissions from combustion of Turkish lignites with high ash, volatile matter, and sulfur contents has not been investigated to date. ...

Zuhal Gogebakan; Nevin Selçuk

2008-03-26T23:59:59.000Z

314

Residual oil saturation, Annex VI-1. Venezuela-MEM/USA-DOE fossil energy report VI-1  

SciTech Connect (OSTI)

This report, dealing with the US/Venezuela Cooperative exchange agreement on residual oil saturation (Annex VI), contains the results of efforts by scientists from both countries to improve the state of present technology for accurately measuring the amount of residual oil remaining in a particular reservoir of interest. To date, those efforts have resulted in an exchange of ideas through a sharing of technical literature and bibliographic listings pertinent to the subject, reciprocal visits to the laboratories and field sites where residual oil saturation measurement R and D is in progress, an exchange of ideas through workshops held in each country, and open discussions covering areas of future cooperative R and D. The text of the basic agreement , Annex VI and all amendments, are appended to the report. In addition to a chronicle of events detailing progress under Annex VI, this report also inlcudes a discussion of future work to be performed in the areas of subsidence accompanying the extraction of oil and interwell oil saturation measurement. A meeting was held in Bartlesville May 10 and 11 to formulate plans in this area.

Wesson, T.C.; VonDomselaar, H.

1983-04-01T23:59:59.000Z

315

Residue-free fabrication of high-performance graphene devices by patterned PMMA stencil mask  

SciTech Connect (OSTI)

Two-dimensional (2D) atomic crystals and their hybrid structures have recently attracted much attention due to their potential applications. The fabrication of metallic contacts or nanostructures on 2D materials is very common and generally achieved by performing electron-beam (e-beam) lithography. However, e-beam lithography is not applicable in certain situations, e.g., cases in which the e-beam resist does not adhere to the substrates or the intrinsic properties of the 2D materials are greatly altered and degraded. Here, we present a residue-free approach for fabricating high-performance graphene devices by patterning a thin film of e-beam resist as a stencil mask. This technique can be generally applied to substrates with varying surface conditions, while causing negligible residues on graphene. The technique also preserves the design flexibility offered by e-beam lithography and therefore allows us to fabricate multi-probe metallic contacts. The graphene field-effect transistors fabricated by this method exhibit smooth surfaces, high mobility, and distinct magnetotransport properties, confirming the advantages and versatility of the presented residue-free technique for the fabrication of devices composed of 2D materials.

Shih, Fu-Yu [Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China); Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan (China); Chen, Shao-Yu; Wu, Tsuei-Shin; Wang, Wei-Hua, E-mail: wwang@sinica.edu.tw [Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan (China); Liu, Cheng-Hua; Chen, Yang-Fang [Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China); Ho, Po-Hsun; Chen, Chun-Wei [Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan (China)

2014-06-15T23:59:59.000Z

316

The effects of machine parameters on residual stress determined using micro-Raman spectroscopy  

SciTech Connect (OSTI)

The effects of machine parameters on residual stresses in single point diamond turned silicon and germanium have been investigated using micro-Raman spectroscopy. Residual stresses were sampled across ductile feed cuts in < 100 > silicon and germanium which were single point diamond turned using a variety of feed rates, rake angles and clearance angles. High spatial resolution micro-Raman spectra (1{mu}m spot) were obtained in regions of ductile cutting where no visible surface damage was present. The use of both 514-5nm and 488.0nm excitation wavelengths, by virtue of their differing characteristic penetration depths in the materials, allowed determinations of stress profiles as a function of depth into the sample. Previous discussions have demonstrated that such Raman spectra will exhibit asymmetrically broadened peaks which are characteristic of the superposition of a continuum of Raman scatterers from the various depths probed. Depth profiles of residual stress were obtained using computer deconvolution of the resulting asymmetrically broadened raman spectra.

Sparks, R.G.; Enloe, W.S.; Paesler, M.A.

1988-12-01T23:59:59.000Z

317

Manual for implementing residual radioactive material guidelines using RESRAD, Version 5.0  

SciTech Connect (OSTI)

This manual presents information for implementing US Department of Energy (DOE) guidelines for residual radioactive material. It describes the analysis and models used to derive site-specific guidelines for allowable residual concentrations of radionuclides in soil and the design and use of the RESRAD computer code for calculating doses, risks, and guideline values. It also describes procedures for implementing DOE policy for reducing residual radioactivity to levels that are as low as reasonably achievable. Two new pathways, radon inhalation and soil ingestion, have been added to RESRAD. Twenty-seven new radionuclides have also been added, and the cutoff half-life for associated radionuclides has been reduced to six months. Other major improvements to the RESRAD code include the ability to run sensitivity analyses, the addition of graphical output, user-specified dose factors, updated databases, an improved groundwater transport model, optional input of a groundwater concentration and a solubility constant, special models for tritium and carbon-14, calculation of cancer incidence risk, and the use of a mouse with menus.

Yu, C.; Zielen, A.J.; Cheng, J.J. [and others

1993-09-01T23:59:59.000Z

318

Isomer residual ratio of odd-odd isotope {sup 180}Ta in supernova nucleosynthsis  

SciTech Connect (OSTI)

The nucleosynthesis of {sup 180}Ta has remained an unsolved problem and as its origin many nucleosynthesis mechanisms have been proposed. This isotope has the unique feature that the naturally occurring abundance of {sup 180}Ta is actually a meta-stable isomer (half-life of >=10{sup 15} yr), while the ground state is a 1{sup +} unstable state which beta-decays with a half-life of only 8.15 hr. We have made a new time-dependent calculation of {sup 180}Ta meta-stable isomer residual ratio after supernova neutrino-induced reactions. This residual isomer ratio is crucial for understanding the production and survival of this naturally occurring rare isotope. We have constructed a new model under temperature evolution after type II supernova explosion. We include the explicit linking between the isomer and all known excited states and found that the residual ratio is insensitive to astrophysical parameters such as neutrino energy spectrum, explosion energy, decay time constant. We find that the explicit time evolution of the synthesis of {sup 180}Ta avoids the overproduction relative to {sup 138}La for a neutrino process neutrino temperature of 4 MeV.

Hayakawa, Takehito [Japan Atomic Energy Agency, Kizugawa, Kyoto 619-0215 (Japan); Kajino, Toshitaka [National Astronomical Observatory, Osawa, Mitaka, Tokyo 181-8588 (Japan); Chiba, Satoshi [Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-11 (Japan); Mathews, Grant [Enter for Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)

2010-06-01T23:59:59.000Z

319

An evaluation on the environmental consequences of residual CFCs from obsolete household refrigerators in China  

SciTech Connect (OSTI)

Chlorofluorocarbons (CFCs) contained in household refrigerators consist mainly of CFC-11 and CFC-12, which will be eventually released into the environment. Consequentially, environmental releases of these refrigerants will lead to ozone depletion and contribute significantly to the greenhouse effect, if waste refrigerators are not disposed of properly. In the present paper, the potential release of residual CFCs and their substitutes from obsolete household refrigerators in China is examined, and their contributions to ozone depletion and greenhouse effect are compared with those of other recognized ozone-depleting substances (ODS) and greenhouse gases (GHGs). The results imply that annual potential amounts of released residual CFC-11 and CFC-12 will reach their maximums at 4600 and 2300 tons, respectively in 2011, and then decrease gradually to zero until 2020. Meanwhile, the amounts of their most widely used substitutes HCFC-141b and HFC-134a will keep increasing. Subsequently, the contribution ratio of these CFCs and their substitutes to ozone depletion will remain at 25% through 2011, and reach its peak value of 34% by 2018. The contribution to greenhouse effect will reach its peak value of 0.57% by 2010. Moreover, the contribution ratio of these CFCs to the total global release of CFCs will steadily increase, reaching its peak of 15% by 2018. Thus, this period from 2010 to 2018 is a crucial time during which residual CFCs and their substitutes from obsolete household refrigerators in China will contribute significantly to ozone depletion.

Zhao Xiangyang; Duan Huabo [Department of Environmental Science and Engineering, Tsinghua University, Beijing (China); Li Jinhui, E-mail: jinhui@tsinghua.edu.cn [Department of Environmental Science and Engineering, Tsinghua University, Beijing (China)

2011-03-15T23:59:59.000Z

320

Indicator-based economic, environmental, and social sustainability assessment of a small gasification bioenergy system fuelled with food processing residues from the Mediterranean agro-industrial sector  

Science Journals Connector (OSTI)

Abstract Small-scale gasification systems coupled with internal combustion engines could be innovative alternatives for combined heat and power production when fuelled with agricultural residues, providing benefits related to both food processing waste management and sustainable agriculture. In the present study, an indicator-based estimation of sustainability was performed for a gasification-based bioenergy system considering not only economic but also environmental and social issues. The analysed scenario consisted of an installed capacity of 40 kWel, with an investment cost estimated to be approximately 1520 €/kWhel and a net profit up to 20,000 €/year. However, commercial success depends on instruments of reducing capital investment, such as subsidies, electricity feed-in tariffs, and biomass prices. Additional benefits such as low- or zero-cost feedstock and zero-cost biomass logistics suggest that small-scale gasification systems based on agricultural residues are likely to play an important role in future energy supplies for Mediterranean countries.

P. Manara; A. Zabaniotou

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

International Conference on Engineering for Waste and Biomass Valorisation September 10-13, 2012 Porto, Portugal USE OF AUTO SHREDDER RESIDUES GENERATED BY POST  

E-Print Network [OSTI]

-13, 2012 � Porto, Portugal USE OF AUTO SHREDDER RESIDUES GENERATED BY POST SHREDDER TECHNOLOGY of plastics and residuals metals. This fraction undergoes Post-Shredder Treatments, to extract 30-50 wt characterization of fractions sampled on an industrial line of treatment of automotive residues. The results feed

Paris-Sud XI, Université de

322

Control of residual stresses in tests of technological processes of producing compressor blades for gas turbine engines  

Science Journals Connector (OSTI)

The article describes experience with inducing and controlling residual surface stresses in compressor blades made of titanium alloys. It was established that these stresses have a substantial effect on the fa...

V. A. Boguslaev

1991-03-01T23:59:59.000Z

323

Improving fatigue strength by producing residual stresses on surface of parts of gas-turbine engines using processing treatments  

Science Journals Connector (OSTI)

The paper deals with a comparison of results of measuring residual stresses and with the study of their ... effect on the fatigue strength of parts of gas-turbine engines after finish treatments by grinding, poli...

M. G. Yakovlev

2014-07-01T23:59:59.000Z

324

Microstructure, residual stress, and mechanical properties of thin film materials for a microfabricated solid oxide fuel cell  

E-Print Network [OSTI]

The microstructure and residual stress of sputter-deposited films for use in microfabricated solid oxide fuel cells are presented. Much of the work focuses on the characterization of a candidate solid electrolyte: Yttria ...

Quinn, David John, Sc. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

325

Characterization of air emissions and residual ash from open burning of electronic wastes during simulated rudimentary recycling operations  

Science Journals Connector (OSTI)

Air emissions and residual ash samples were collected and analyzed during experiments of open, uncontrolled combustion of electronic waste (e-waste), simulating practices associated with rudimentary e-waste recyc...

Brian K. Gullett; William P. Linak…

2007-03-01T23:59:59.000Z

326

Coupling of solar-assisted advanced oxidative and biological treatment for degradation of agro-residue-based soda bleaching effluent  

Science Journals Connector (OSTI)

This study evaluates the effect of integrated solar-assisted advanced oxidation process (AOP) and biological...1) stages of soda pulp bleaching in agro-residue-based pulp and paper mill. Biodegradation of the eff...

Amit Dhir; Nagaraja Tejo Prakash…

2012-11-01T23:59:59.000Z

327

Evaluation of Gastrointestinal Solubilization of Petroleum Hydrocarbon Residues in Soil Using an In Vitro Physiologically Based Model  

Science Journals Connector (OSTI)

Petroleum hydrocarbon residues in weathered soils may pose risks to humans through the ingestion pathway. To understand the factors controlling their gastrointestinal (GI) absorption, a newly developed experimental extraction protocol was used to model ...

Hoi-Ying N. Holman; Regine Goth-Goldstein; David Aston; Mao Yun; Jenny Kengsoontra

2002-02-14T23:59:59.000Z

328

The Role of Sustainability Standards in the Energetic Use of Palm Oil Plantation Residues: Case Study of Cameroon  

Science Journals Connector (OSTI)

This chapter aims to discuss the sustainability aspects of using residual wood from plantations for the production of electricity and heat. ... There are continuous debates about the potential of biomass feedstoc...

Michael Schmidt; Berthold Hansmann; Pia Dewitz

2014-01-01T23:59:59.000Z

329

Estimation of the Residual Magnetic Field Strength Inside a Pipeline after Testing by a Magnetic Flaw Detector  

Science Journals Connector (OSTI)

The residual magnetic field strength inside a pipeline after testing by a magnetic flaw detector ... demagnetizing local joint-pipe sections in carrying out repair-welding works is proposed.

R. V. Zagidulin; V. F. Muzhitskii

2003-07-01T23:59:59.000Z

330

Cost, energy and carbon dioxide (CO2) effectiveness of a harvesting and transporting system for residual forest biomass  

Science Journals Connector (OSTI)

The purpose of this study is to examine the feasibility of a system to harvest logging residues (or slashes) as a new resource for energy in Japan. A harvesting and transporting system ... the system is discussed...

Takuyuki Yoshioka; Kazuhiro Aruga; Hideo Sakai…

2002-08-01T23:59:59.000Z

331

Secondary wastes and high explosive residues generated during production of main high explosive charges for nuclear weapons. Revision 1  

SciTech Connect (OSTI)

This study identifies the sources of high-explosive (HE) residues and hazardous and nonhazardous wastes generated during the production of the main HE charges for nuclear weapons, and estimates their quantities and characteristics. The results can be used as a basis for design of future handling and treatment systems for solid and liquid HE residues and wastes at any proposed new HE production facilities. This paper outlines a general methodology for documenting and estimating the volumes and characteristics of the solid and liquid HE residues and hazardous and nonhazardous wastes. To facilitate the estimating, we separated the HE main-charge production process into ten discrete unit operations and four support operations, and identified the corresponding solid and liquid HE residues and waste quantities. Four different annual HE main-charge production rates of 100, 500, 1000, and 2000 HE units/yr were assumed to develop the volume estimates and to establish the sensitivity of the estimates to HE production rates. The total solids (HE residues and hazardous and nonhazardous wastes) estimated range from 800 to 2800 ft{sup 3}/yr and vary uniformly with the assumed HE production rate. The total liquids estimated range from 73,000 to 1,448.000 gal/yr and also vary uniformly with the assumed production rate. Of the estimated solids, the hazardous wastes (e.g., electrical vehicle batteries and light tubes) were about 2% of the total volumes. The generation of solid HE residues varied uniformly with the HE production rates and ranged from about 20% of the total solids volume for the 100 HE units/yr case to about 60% for the 2000 units/yr case. The HE machining operations generated 60 to 80% of the total solid HE residues, depending on the assumed production rate, and were also the sources of the most concentrated HE residues.

Jardine, L.J.; McGee, J.T.

1995-01-01T23:59:59.000Z

332

Distribution of polycyclic aromatic hydrocarbons in fly ash during coal and residual char combustion in a pressurized fluidized bed  

SciTech Connect (OSTI)

To investigate the distribution of polycyclic aromatic hydrocarbons (PAHs) in fly ash, the combustion of coal and residual char was performed in a pressurized spouted fluidized bed. After Soxhlet extraction and Kuderna-Danish (K-D) concentration, the contents of 16 PAHs recommended by the United States Environmental Protection Agency (U.S. EPA) in coal, residual char, and fly ash were analyzed by a high-performance liquid chromatography (HPLC) coupled with fluorescence and diode array detection. The experimental results show that the combustion efficiency is lower and the carbon content in fly ash is higher during coal pressurized combustion, compared to the residual char pressurized combustion at the pressure of 0.3 MPa. Under the same pressure, the PAH amounts in fly ash produced from residual char combustion are lower than that in fly ash produced from coal combustion. The total PAHs in fly ash produced from coal and residual char combustion are dominated by three- and four-ring PAHs. The amounts of PAHs in fly ash produced from residual char combustion increase and then decrease with the increase of pressure in a fluidized bed. 21 refs., 1 fig., 4 tabs.

Hongcang Zhou; Baosheng Jin; Rui Xiao; Zhaoping Zhong; Yaji Huang [Nanjing University of Information Science and Technology, Nanjing (China)

2009-04-15T23:59:59.000Z

333

Zinc and cadmium residues in striped bass from Cherokee, Norris, and Watts Bar reservoirs  

SciTech Connect (OSTI)

Zinc and cadmium concentrations in muscle, liver, and kidney were measured in striped bass (Morone saxatilis) from Cherokee, Norris, and Watts Bar reservoirs in East Tennessee to determine if these metals had contributed to fish kills observed in Cherokee during the 1970's. The range of mean concentrations of zinc from collections of Cherokee striped bass (muscle 11-14, liver 98-106, kidney 88-105 mg Zn/kg dry weight) were comparable to ranges in fish from Norris and Watts Bar (muscle 12-13, liver 83-132, kidney 96-108 mg/kg dry weight). With the exception of concentrations in the kidneys of one collection, cadmium residues from Cherokee striped bass (muscle 0.02-0.09, liver 0.3-0.7, kidney 0.2-4.0 mg Cd/kg dry weight) were also similar to residues from Norris and Watts Bar fish (muscle 0.05-0.13, liver 0.3-2.1, kidney 0.3-0.5 mg Cd/kg dry weight). There were significant differences in tissue residues among seasons (summer 1979, spring 1980, summer 1980) in Cherokee Reservoir, as well as significant differences among the three reservoirs (Cherokee, Norris, Watts Bar) during the same season (spring 1980). All concentrations, however, were well below those reported for fish exposed to the maximum non-harmful concentrations of zinc and the lowest potentially harmful concentration of cadmium and moreover, were within the range typically reported for fish tissues. It is, therefore, believed that in at least the last two years, zinc and cadmium in the tissues of striped bass from Cherokee Reservoir have not been harmful to the fish.

Tisa, M.S.; Strange, R.J.

1981-10-01T23:59:59.000Z

334

Evaluation of an eastern shale oil residue as an asphalt additive  

SciTech Connect (OSTI)

An evaluation of eastern shale oil (ESO) residue as an asphalt additive to reduce oxidative age hardening and moisture susceptibility was conducted by Western Research Institute (WRI). The ESO residue, have a viscosity of 23.9 Pa{lg_bullet}s at 60{degree}C (140{degree}F), was blended with three different petroleum-derived asphalts, ASD-1, AAK-1, and AAM-1, which are known to be very susceptible to oxidative aging. Rheological and infrared analyses of the unaged and aged asphalts and the blends were then conducted to evaluate oxidative age hardening. In addition, the petroleum-derived asphalts and the blends were coated onto three different aggregates, Lithonia granite (RA), a low-absorption limestone (RD), and a siliceous Gulf Coast gravel (RL), and compacted into briquettes. Successive freeze-thaw cycling was then conducted to evaluate the moisture susceptibility of the prepared briquettes. The rheological analyses of the unaged petroleum-derived asphalts and their respective blends indicate that the samples satisfy the rutting requirement. However, the aging indexes for the rolling thin film oven (RTFO)-aged and RTFO/pressure aging vessel (PAV)-aged samples indicate that the blends are stiffer than the petroleum-derived asphalts. This means that when in service the blends will be more prone to pavement embrittlement and fatigue cracking than the petroleum-derived asphalts. Infrared analyses were also conducted on the three petroleum-derived asphalts and the blends before and after RTFO/PAV aging. In general, upon RTFO/PAV aging, the amounts of carbonyls and sulfoxides in the samples increase, indicating that the addition of the ESO residue does not mitigate the chemical aging (oxidation) of the petroleum-derived asphalts. This information correlates with the rheological data and the aging indexes that were calculated for the petroleum-derived asphalts and the blends.

Thomas, K.P.; Harnsberger, P.M.

1995-09-01T23:59:59.000Z

335

Residual stress and damage-induced critical fracture on CO2 laser treated fused silica  

SciTech Connect (OSTI)

Localized damage repair and polishing of silica-based optics using mid- and far-IR CO{sub 2} lasers has been shown to be an effective method for increasing optical damage threshold in the UV. However, it is known that CO{sub 2} laser heating of silicate surfaces can lead to a level of residual stress capable of causing critical fracture either during or after laser treatment. Sufficient control of the surface temperature as a function of time and position is therefore required to limit this residual stress to an acceptable level to avoid critical fracture. In this work they present the results of 351 nm, 3 ns Gaussian damage growth experiments within regions of varying residual stress caused by prior CO{sub 2} laser exposures. Thermally stressed regions were non-destructively characterized using polarimetry and confocal Raman microscopy to measure the stress induced birefringence and fictive temperature respectively. For 1 {approx} 40s square pulse CO{sub 2} laser exposures created over 0.5-1.25 kW/cm{sup 2} with a 1-3 mm 1/e{sup 2} diameter beam (T{sub max} {approx} 1500-3000 K), the critical damage site size leading to fracture increases weakly with peak temperature, but shows a stronger dependence on cooling rate, as predicted by finite element hydrodynamics simulations. Confocal micro-Raman was used to probe structural changes to the glass over different thermal histories and indicated a maximum fictive temperature of 1900K for T{sub max} {ge} 2000 K. The effect of cooling rate on fictive temperature caused by CO{sub 2} laser heating are consistent with finite element calculations based on a Tool-Narayanaswamy relaxation model.

Matthews, M; Stolken, J; Vignes, R; Norton, M

2009-11-02T23:59:59.000Z

336

Residual sweeping effects in the swept frame of reference in Kinematic Simulations  

E-Print Network [OSTI]

It has been suggested that sweeping effects make Lagrangian properties in Kinematic Simulations (KS) unreliable. Here we show through a novel analysis based upon analysing neighbouring particle trajectories in a frame of reference moving with the large energy contining scales that the residual sweeping error in the turbulent pair diffusivity ($K$) in KS is $e_K\\sim dt/\\tau_s$, where $dt$ is the numerical timestep and $\\tau_s$ is the time scale of the sweeping through local eddies. Thus, provided that $dt\\ll \\tau_s$, then $e_K\\ll 1$ and the Lagrangian properties in KS are reliable.

Malik, Nadeem A

2015-01-01T23:59:59.000Z

337

Cleaning residual NaK in the fast flux test facility fuel storage cooling system  

SciTech Connect (OSTI)

The Fast Flux Test Facility (FFTF), located on the U.S. Department of Energy's Hanford Reservation, is a liquid metal-cooled test reactor. The FFTF was constructed to support the U.S. Liquid Metal Fast Breeder Reactor Program. The bulk of the alkali metal (sodium and NaK) has been drained and will be stored onsite prior to final disposition. Residual NaK needed to be removed from the pipes, pumps, heat exchangers, tanks, and vessels in the Fuel Storage Facility (FSF) cooling system. The cooling system was drained in 2004 leaving residual NaK in the pipes and equipment. The estimated residual NaK volume was 76 liters in the storage tank, 1.9 liters in the expansion tank, and 19-39 liters in the heat transfer loop. The residual NaK volume in the remainder of the system was expected to be very small, consisting of films, droplets, and very small pools. The NaK in the FSF Cooling System was not radiologically contaminated. The portions of the cooling system to be cleaned were divided into four groups: 1. The storage tank, filter, pump, and associated piping; 2. The heat exchanger, expansion tank, and associated piping; 3. Argon supply piping; 4. In-vessel heat transfer loop. The cleaning was contracted to Creative Engineers, Inc. (CEI) and they used their superheated steam process to clean the cooling system. It has been concluded that during the modification activities (prior to CEI coming onsite) to prepare the NaK Cooling System for cleaning, tank T-914 was pressurized relative to the In-Vessel NaK Cooler and NaK was pushed from the tank back into the Cooler and that on November 6, 2005, when the gas purge through the In-Vessel NaK Cooler was increased from 141.6 slm to 283.2 slm, NaK was forced from the In-Vessel NaK Cooler and it contacted water in the vent line and/or scrubber. The gases from the reaction then traveled back through the vent line coating the internal surface of the vent line with NaK and NaK reaction products. The hot gases also exited the scrubber through the stack and due to the temperature of the gas, the hydrogen auto ignited when it mixed with the oxygen in the air. There was no damage to equipment, no injuries, and no significant release of hazardous material. Even though the FSF Cooling System is the only system at FFTF that contains residual NaK, there are lessons to be learned from this event that can be applied to future residual sodium removal activities. The lessons learned are: - Before cleaning equipment containing residual alkali metal the volume of alkali metal in the equipment should be minimized to the extent practical. As much as possible, reconfirm the amount and location of the alkali metal immediately prior to cleaning, especially if additional evolutions have been performed or significant time has passed. This is especially true for small diameter pipe (<20.3 centimeters diameter) that is being cleaned in place since gas flow is more likely to move the alkali metal. Potential confirmation methods could include visual inspection (difficult in all-metal systems), nondestructive examination (e.g., ultrasonic measurements) and repeating previous evolutions used to drain the system. Also, expect to find alkali metal in places it would not reasonably be expected to be. - Staff with an intimate knowledge of the plant equipment and the bulk alkali metal draining activities is critical to being able to confirm the amount and locations of the alkali metal residuals and to safely clean the residuals. - Minimize the potential for movement of alkali metal during cleaning or limit the distance and locations into which alkali metal can move. - Recognize that when working with alkali metal reactions, occasional pops and bangs are to be anticipated. - Pre-plan emergency responses to unplanned events to assure responses planned for an operating reactor are appropriate for the deactivation phase.

Burke, T.M.; Church, W.R. [Fluor Hanford, PO Box 1000, Richland, Washington, 99352 (United States); Hodgson, K.M. [Fluor Government Group, PO Box 1050, Richland, Washington, 99352 (United States)

2008-01-15T23:59:59.000Z

338

Naphthenic/paraffinic hydrocarbons of residual lube stock from West Siberian crudes  

SciTech Connect (OSTI)

The lube stocks from West Siberian crudes are characterized by high contents of aromatic hydrocarbons and by high viscosity indexes of the naphthenic/paraffinic and aromatic hydrocarbons. Mass spectrometric analysis showed that isoparaffins account for one-third of the total naphthenic/paraffinic hydrocarbons. The study showed that the naphthenic/paraffinic hydrocarbons of the residual lube stock from West Siberia crudes, even with a variation of molecular weight over broad limits, are relatively uniform in composition. They consist mainly of isoparaffinic and monocyclic and noncondensed naphthenic structures.

Detusheva, E.P.; Bogdanov, Sh.K.; Khramtsova, L.P.; Nekrasova, A.V.; Shkol'nikov, V.M.

1983-03-01T23:59:59.000Z

339

A test for market power exertion in the credit card industry with the dual solow residual  

E-Print Network [OSTI]

the causes, given the effect (X), equal non-zero. Y ~X ~Z Figure 3. 2: Causal inverted fork The common effects do not screen off associations between the joint causes. Directed acyclic graphs illustrate conditional independence as in n Pr(xi, xn xn... successfully. 20 Roeger's derivation, the dual residual under imperfect competition is developed from a unit cost function that presumes constant returns to scale. Equation (9) illustrates the functional form. (9) G(Wtt. Wrt)Yt C(Wtt, Wrt, Y?Et) = where...

Meurisse, Mark P

2012-06-07T23:59:59.000Z

340

Effect of residual stress and surface roughness on the fatigue behaviour of aluminium matrix composites  

Science Journals Connector (OSTI)

In this investigation the fatigue properties of specimens manufactured with different turning parameters were investigated in stress-controlled constant amplitude tests at ambient temperature. The change of feed rate and depth of cut lead to a change in the near surface microstructure. Hence the fatigue properties were influenced significantly due to different surface roughness and surface residual stress resulting from the unequal turning processes. The cyclic deformation behaviour of AMC225xe is characterised by pronounced initial cyclic hardening. Continuous load increase tests allow a reliable estimation of the endurance limit of AMC225xe with one single specimen on the basis of cyclic deformation, temperature and electrical resistance data.

M Smaga; D Eifler

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Nondestructive Induced Residual Stress Assessment in Superalloy Turbine Engine Components Using Induced Positron Annihilation (IPA)  

SciTech Connect (OSTI)

Induced Positron Analysis (IPA) has demonstrated the ability to nondestructively quantify shot peening/surface treatments and relaxation effects in single crystal superalloys, steels, titanium and aluminum with a single measurement as part of a National Science Foundation SBIR program and in projects with commercial companies. IPA measurement of surface treatment effects provides a demonstrated ability to quantitatively measure initial treatment effectiveness along with the effect of operationally induced changes over the life of the treated component. Use of IPA to nondestructively quantify surface and subsurface residual stresses in turbine engine materials and components will lead to improvements in current engineering designs and maintenance procedures.

Rideout, C. A.; Ritchie, S. J.; Denison, A. [Positron Systems, Inc., 411 S. Fifth St., Boise, Idaho 83702 (United States)

2007-03-21T23:59:59.000Z

342

ASSESSMENT OF RESIDUAL STRESSES IN SRS AND HANFORD 3013 INNER AND CONVENIENCE CANS  

SciTech Connect (OSTI)

Chloride stress corrosion cracking (SCC) is a plausible corrosion mechanism for the stainless steel 3013 containers during their lifetime for plutonium material storage if sufficient electrolyte is present within the container. Contributing factors for SCC, such as fabrication and welding residual stresses, are present in the 3013 cans. Convenience and inner cans from both Hanford and SRS are made by a flow form process, which cold works the stainless steel during fabrication. Additionally, the inner cans also are sealed at the can top with a closure weld to the sealing plug. Only SRS and Hanford were tested since moisture levels were significant for SCC. As part of the 3013 corrosion plan for FY09, testing in a boiling magnesium chloride solution was performed on actual 3013 convenience and inner cans to determine if the residual stresses were sufficient for the initiation and propagation of SCC. Additional testing in a 40% calcium chloride solution was also performed on 304L stainless steel SCC coupons, i.e. stressed teardrop-shaped samples (teardrops), and an inner can welded top to provide comparative results and to assess the effect of residual stresses in a less aggressive environment. The testing performed under this task consisted of 3013 inner and convenience cans and 304L teardrops exposed to a boiling magnesium chloride solutions per ASTM G36 and a 40% calcium chloride solution at 100 C following the guidance of ASTM G123. Cracking occurred in all can types including the inner can bottom and welded top and the bottoms of the SRS and Hanford convenience cans when exposed to the boiling magnesium chloride solution at 155 C. Cracking occurred at different times indicative of the residual stress levels in the cans. 304L teardrops cracked in the shortest time interval and therefore provide a conservative estimate for can performance. Testing in a 40% calcium chloride solution at 100 C demonstrated that cracking occurs in a less aggressive environment but at significantly longer times than in the boiling magnesium chloride. Vapor space cracking was also found to occur in the inner can welded top exposed over the boiling magnesium chloride solution and on 304L teardrops exposed over a hot calcium chloride solution.

Mickalonis, J.

2009-03-01T23:59:59.000Z

343

Standoff Hyperspectral Imaging of Explosives Residues Using Broadly Tunable External Cavity Quantum Cascade Laser Illumination  

SciTech Connect (OSTI)

We describe experimental results on the detection of explosives residues using active hyperspectral imaging by illumination of the target surface using an external cavity quantum cascade laser (ECQCL) and imaging using a room temperature microbolometer camera. The active hyperspectral imaging technique forms an image hypercube by recording one image for each tuning step of the ECQCL. The resulting hyperspectral image contains the full absorption spectrum produced by the illumination laser at each pixel in the image which can then be used to identify the explosive type and relative quantity using spectral identification approaches developed initially in the remote sensing community.

Bernacki, Bruce E.; Phillips, Mark C.

2010-05-01T23:59:59.000Z

344

An assessment of the potential for coal/residual oil coprocessing  

SciTech Connect (OSTI)

Among the promising new techniques to produce liquid hydrocarbon fuels from coal is coal/petroleum coprocessing based upon the use of heavy oil, tar sand bitumen and petroleum residua as ''solvents'' for the conversion of coal. Coprocessing is the simultaneous hydrogenation of coal and heavy oil fractions in specially designed reactors with coal contents by weight ranging from as low as 1% to potentially as high as 50-60% depending upon the technology employed. The results of a study on the potential for coal/residual oil coprocessing in the United States are addressed in this paper.

Huber, D.A.; Lee, Q.; Thomas, R.L.; Frye, K.; Rudins, G.

1986-09-01T23:59:59.000Z

345

Neutron diffraction measurements of residual stresses in welds fabricated from highly anisotropic materials  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

neutron diffraction to neutron diffraction to engineering problems T.M. Holden Northern Stress Technologies Deep River, Ontario, Canada Oak Ridge National Laboratory, 13 nd June 2011 Reference material * "Introduction to the characterization of residual stress by neutron diffraction". M.T. Hutchings, P.J. Withers, T.M. Holden and T. Lorentzen, (Taylor and Francis: Boca Raton) 2005 * "Introduction to diffraction in Materials Science and Engineering", A.D. Krawitz (John Wiley and Sons ,Inc.: New York) 2001 * "Non-destructive testing-Standard Test Method for

346

,"U.S. Residual Fuel Oil Refiner Sales Volumes"  

U.S. Energy Information Administration (EIA) Indexed Site

Refiner Sales Volumes" Refiner Sales Volumes" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","U.S. Residual Fuel Oil Refiner Sales Volumes",2,"Monthly","9/2013","1/15/1983" ,"Release Date:","12/2/2013" ,"Next Release Date:","1/2/2014" ,"Excel File Name:","pet_cons_refres_c_nus_eppr_mgalpd_m.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/pet/pet_cons_refres_c_nus_eppr_mgalpd_m.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.gov"

347

In situ recovery from residually heated sections in a hydrocarbon containing formation  

DOE Patents [OSTI]

Methods of treating a tar sands formation is described herein. The methods may include providing heat to a first section of a hydrocarbon layer in the formation from a plurality of heaters located in the first section of the formation. Heat is transferred from the heaters so that at least a first section of the formation reaches a selected temperature. At least a portion of residual heat from the first section transfers from the first section to a second section of the formation. At least a portion of hydrocarbons in the second section are mobilized by providing a solvation fluid and/or a pressurizing fluid to the second section of the formation.

Vinegar, Harold J. (Bellaire, TX); Karanikas, John Michael (Houston, TX); Ryan, Robert Charles (Houston, TX)

2010-12-14T23:59:59.000Z

348

Contaminant Release Data Package for Residual Waste in Single-Shell Hanford Tanks  

SciTech Connect (OSTI)

The Hanford Federal Facility Agreement and Consent Order requires that a Resource Conservation and Recovery Act (RCRA) Facility Investigation report be submitted to the Washington State Department of Ecology. The RCRA Facility Investigation report will provide a detailed description of the state of knowledge needed for tank farm performance assessments. This data package provides detailed technical information about contaminant release from closed single-shell tanks necessary to support the RCRA Facility Investigation report. It was prepared by Pacific Northwest National Laboratory (PNNL) for CH2M HILL Hanford Group, Inc., which is tasked by the U.S. Department of Energy (DOE) with tank closure. This data package is a compilation of contaminant release rate data for residual waste in the four Hanford single-shell tanks (SSTs) that have been tested (C-103, C-106, C-202, and C-203). The report describes the geochemical properties of the primary contaminants of interest from the perspective of long-term risk to groundwater (uranium, technetium-99, iodine-129, chromium, transuranics, and nitrate), the occurrence of these contaminants in the residual waste, release mechanisms from the solid waste to water infiltrating the tanks in the future, and the laboratory tests conducted to measure release rates.

Deutsch, William J.; Cantrell, Kirk J.; Krupka, Kenneth M.

2007-12-01T23:59:59.000Z

349

Gasification behavior of carbon residue in bed solids of black liquor gasifier  

SciTech Connect (OSTI)

Steam gasification of carbon residue in bed solids of a low-temperature black liquor gasifier was studied using a thermogravimetric system at 3 bar. Complete gasification of the carbon residue, which remained unreactive at 600 C, was achieved in about 10 min as the temperature increased to 800 C. The rate of gasification and its temperature dependence were evaluated from the non-isothermal experiment results. Effects of particle size and adding H{sub 2} and CO to the gasification agent were also studied. The rate of steam gasification could be taken as zero order in carbon until 80% of carbon was gasified, and for the rest of the gasification process the rate appeared to be first order in carbon. The maximum rate of carbon conversion was around 0.003/s and the activation energy was estimated to be in the range of 230-300 kJ/mol. The particle size did not show significant effect on the rate of gasification. Hydrogen and carbon monoxide appeared to retard the onset of the gasification process. (author)

Preto, Fernando; Zhang, Xiaojie (Frank); Wang, Jinsheng [CANMET Energy Technology Centre, Natural Resources (Canada)

2008-07-15T23:59:59.000Z

350

The water footprint of biofuel produced from forest wood residue via a mixed alcohol gasification process  

Science Journals Connector (OSTI)

Forest residue has been proposed as a feasible candidate for cellulosic biofuels. However, the number of studies assessing its water use remains limited. This work aims to analyze the impacts of forest-based biofuel on water resources and quality by using a water footprint approach. A method established here is tailored to the production system, which includes softwood, hardwood, and short-rotation woody crops. The method is then applied to selected areas in the southeastern region of the United States to quantify the county-level water footprint of the biofuel produced via a mixed alcohol gasification process, under several logistic systems, and at various refinery scales. The results indicate that the blue water sourced from surface or groundwater is minimal, at 2.4 liters per liter of biofuel (l/l). The regional-average green water (rainfall) footprint falls between 400 and 443 l/l. The biofuel pathway appears to have a low nitrogen grey water footprint averaging 25 l/l at the regional level, indicating minimal impacts on water quality. Feedstock mix plays a key role in determining the magnitude and the spatial distribution of the water footprint in these regions. Compared with other potential feedstock, forest wood residue shows promise with its low blue and grey water footprint.

Yi-Wen Chiu; May Wu

2013-01-01T23:59:59.000Z

351

Logistics cost analysis of rice residues for second generation bioenergy production in Ghana  

Science Journals Connector (OSTI)

Abstract This study explores the techno-economic potential of rice residues as a bioenergy resource to meet Ghana’s energy demands. Major rice growing regions of Ghana have 70–90% of residues available for bioenergy production. To ensure cost-effective biomass logistics, a thorough cost analysis was made for two bioenergy routes. Logistics costs for a 5 MWe straw combustion plant were 39.01, 47.52 and 47.89 USD/t for Northern, Ashanti and Volta regions respectively. Logistics cost for a 0.25 MWe husk gasification plant (with roundtrip distance 10 km) was 2.64 USD/t in all regions. Capital cost (66–72%) contributes significantly to total logistics costs of straw, however for husk logistics, staff (40%) and operation and maintenance costs (46%) dominate. Baling is the major processing logistic cost for straw, contributing to 46–48% of total costs. Scale of straw unit does not have a large impact on logistic costs. Transport distance of husks has considerable impact on logistic costs.

Pooja Vijay Ramamurthi; Maria Cristina Fernandes; Per Sieverts Nielsen; Clemente Pedro Nunes

2014-01-01T23:59:59.000Z

352

Infrared birefringence imaging of residual stress and bulk defects in multicrystalline silicon  

SciTech Connect (OSTI)

This manuscript concerns the application of infrared birefringence imaging (IBI) to quantify macroscopic and microscopic internal stresses in multicrystalline silicon (mc-Si) solar cell materials. We review progress to date, and advance four closely related topics. (1) We present a method to decouple macroscopic thermally-induced residual stresses and microscopic bulk defect related stresses. In contrast to previous reports, thermally-induced residual stresses in wafer-sized samples are generally found to be less than 5 MPa, while defect-related stresses can be several times larger. (2) We describe the unique IR birefringence signatures, including stress magnitudes and directions, of common microdefects in mc-Si solar cell materials including: {beta}-SiC and {beta}-Si{sub 3}N{sub 4} microdefects, twin bands, nontwin grain boundaries, and dislocation bands. In certain defects, local stresses up to 40 MPa can be present. (3) We relate observed stresses to other topics of interest in solar cell manufacturing, including transition metal precipitation, wafer mechanical strength, and minority carrier lifetime. (4) We discuss the potential of IBI as a quality-control technique in industrial solar cell manufacturing.

Ganapati, Vidya; Schoenfelder, Stephan; Castellanos, Sergio; Oener, Sebastian; Koepge, Ringo; Sampson, Aaron; Marcus, Matthew A.; Lai, Barry; Morhenn, Humphrey; Hahn, Giso; Bagdahn, Joerg; Buonassisi1, Tonio

2010-05-05T23:59:59.000Z

353

Sustainability assessment of industrial waste treatment processes: The case of automotive shredder residue  

Science Journals Connector (OSTI)

To date numerous environmental, economic and societal indicators have been applied to evaluate and compare the sustainability of products and processes. This study presents a set of ad hoc sustainability indicators suitable for assessing and comparing processes for the treatment of industrial waste streams and for allowing to address efficiently all aspects of sustainability. This set consists of the following indicators: energy intensity, material intensity, water consumption, land use, global warming, human toxicity and treatment cost. The application of these indicators to industrial waste treatment processes is discussed in depth. A distinction is made between direct contributions to sustainability, occurring at the process level itself, and indirect contributions related to the production of auxiliaries and the recovery of end products. The proposed sustainability assessment method is applied to treatment processes for automotive shredder residue (ASR), a complex and heterogeneous waste stream with hazardous characteristics. Although different strategies for recycling and valorization of ASR were developed, with some of them already commercialized, large quantities of ASR are still commonly landfilled. This study concludes that for ASR the most sustainable alternative to the present landfill practice, both in short and long term perspective, consists of recycling combined with energetic valorization of the residual fraction.

Isabel Vermeulen; Chantal Block; Jo Van Caneghem; Wim Dewulf; Subhas K. Sikdar; Carlo Vandecasteele

2012-01-01T23:59:59.000Z

354

Recycling of automobile shredder residue with a microwave pyrolysis combined with high temperature steam gasification  

Science Journals Connector (OSTI)

Presently, there is a growing need for handling automobile shredder residues – ASR or “car fluff”. One of the most promising methods of treatment ASR is pyrolysis. Apart of obvious benefits of pyrolysis: energy and metals recovery, there is serious concern about the residues generated from that process needing to be recycled. Unfortunately, not much work has been reported providing a solution for treatment the wastes after pyrolysis. This work proposes a new system based on a two-staged process. The ASR was primarily treated by microwave pyrolysis and later the liquid and solid products become the feedstock for the high temperature gasification process. The system development is supported within experimental results conducted in a lab-scale, batch-type reactor at the Royal Institute of Technology (KTH). The heating rate, mass loss, gas composition, LHV and gas yield of producer gas vs. residence time are reported for the steam temperature of 1173 K. The sample input was 10 g and the steam flow rate was 0.65 kg/h. The conversion reached 99% for liquids and 45–55% for solids, dependently from the fraction. The H2:CO mol/mol ratio varied from 1.72 solids and 1.4 for liquid, respectively. The average LHV of generated gas was 15.8 MJ/N m3 for liquids and 15 MJ/N m3 for solids fuels.

Pawel Donaj; Weihong Yang; W?odzimierz B?asiak; Christer Forsgren

2010-01-01T23:59:59.000Z

355

Comparative thermodynamic and experimental study of some heavy metal behaviours during automotive shredder residues incineration  

Science Journals Connector (OSTI)

Experimental and theoretical studies of the behaviour of some heavy metals were undertaken during Automotive Shredder Residues (ASR) incineration. A thermodynamic study at equilibrium was performed using a software minimizing the free Gibbs energy. The metals studied were barium, copper, lead and zinc. The studies were performed mostly at two temperatures: 1123 and 1373 K. The thermodynamic study showed that the chlorine content is the most important parameter influencing the volatility of the studied metals. It also showed that in default of chlorine in a system containing several metals, barium chloride in its condensed form is the most easily formed. Other metals remained in their metallic form or in the form of oxides. The presence of hydrogen in the system has a general limiting influence on the metal volatility because, especially at high temperatures, hydrogen chloride is more likely to be formed. In the experimental field, the behaviours of metals were studied using commercial polymers as waste models: a PVC mastic, a polyurethane mastic and a rubber powder. Copper and barium presented a non volatile behaviour during the incineration of waste matrixes as ASR, being present also in residual ash. On the other hand, lead was completely formed in the gas phase and zinc showed an equal partitioning between the two principal phases of the treatment. ©

G. Trouve; A. Kauffmann; L. Delfosse

1998-01-01T23:59:59.000Z

356

Simulation of tides, residual flow and energy budget in the Gulf of California  

Science Journals Connector (OSTI)

With the application of a two-dimensional nonlinear hydrodynamical-numerical semi-implicit model, the principal tides M2, S2, K2, N2, K1, P1 and O1 were studied. Energy budgets of the semi-diurnal M2 and S2 were calculated separately. The linear sum of these budgets was compared with the tidal energy budget obtained when these two tidal constituents interact. Since a quadratic form for the bottom friction was used, remarkable differences were found. The results show that in the area of the Colorado River delta, the dissipation of tidal energy is very strong. Intense tidal currents were observed in the same region and over the Salsipuedes Sill. Energy budgets calculated for forcing waves of different periods, but of the same amplitude, were used to estimate the principal periods of resonance. Although the topography of the Gulf is very complex, the model reproduced observed sea-surface elevation and current patterns. To study spring tide conditions, the above seven tidal constituents were simulated. Estimates of residual currents reveal the presence of several intense cyclonic and anticyclonic gyres. Over the Salsipuedes Sill, residual currents of the M2 tide reach values of more than 15 cm s?1. Horizontal distributions of dissipation rates of tidal energy and of kinetic energy were also obtained.

Noel Carbajal; Jan O. Backhaus

1998-01-01T23:59:59.000Z

357

Evaluation of an eastern shale oil residue as an asphalt additive  

SciTech Connect (OSTI)

An evaluation of eastern shale oil (ESO) residue as an asphalt additive to reduce oxidative age-hardening and moisture susceptibility was conducted. The ESO residue, having a viscosity of 23.9 Pa{sm_bullet}s at 60{degrees}C (140{degrees}F), was blended with three different petroleum-derived asphalts, AAD-1, AAK-1, and AAM-1, that are known to be very susceptible to oxidative aging. Rheological and infrared analyses of the unaged and aged asphalts and the blends were then conducted to evaluate oxidative age-hardening. In addition, the petroleum-derived asphalts and the blends were coated onto three different aggregates, Lithonia granite (RA), a low-absorption limestone (RD), and a silicious Gulf Coast gravel (RL), and compacted into briquets. Successive freeze-thaw cycling was then conducted to evaluate the moisture susceptibility of the prepared briquets. The abbreviations used above for the asphalts and the aggregates are part of the Strategic Highway Research Program nomenclature.

Thomas, K.P.; Harnsberger, P.M.

1995-12-19T23:59:59.000Z

358

Strengthening, Crack Arrest And Multiple Cracking In Brittle Materials Using Residual Stresses.  

DOE Patents [OSTI]

Embodiments include a method for forming a glass which displays visible cracking prior to failure when subjected to predetermined stress level that is greater than a predetermined minimum stress level and less than a failure stress level. The method includes determining a critical flaw size in the glass and introducing a residual stress profile to the glass so that a plurality of visible cracks are formed prior to failure when the glass is subjected to a stress that is greater than the minimum stress level and lower than the critical stress. One method for forming the residual stress profile includes performing a first ion exchange so that a first plurality of ions of a first element in the glass are exchanged with a second plurality of ions of a second element that have a larger volume than the first ions. A second ion exchange is also performed so that a plurality of the second ions in the glass are exchanged back to ions of the first element.

Green, David J. (State College, PA); Sglavo, Vincenzo M. (Roncegno, IT); Tandon, Rajan (Fremont, CA)

2003-02-11T23:59:59.000Z

359

Inspecting the minefield and residual explosives by fast neutron activation method  

SciTech Connect (OSTI)

As an upgrade of a robotic mobile system for antipersonnel land-mine clearance, a fast neutron probe has been considered for the detection of mines and explosive residues. Laboratory tests were made by using the 14 MeV 6 x 10{sup 7} neutrons/sec beam with the associated alpha particle detection and with a LaBr{sub 3} gamma ray detector. Simulant of the anti-personal mine was used as a target. Several measurements were made with the target buried into the soil at different depths. For each depth minimal time measurement was estimated for false negative 0.4 % and false positive equal to 10 %. Tests showed that is possible to detect buried land-mine as well as residual explosives; however, in order to reach the optimal speed of 10 cm/s for de-mining vehicle it is necessarily to use several sealed tube neutron generators and few tens of LaBr{sub 3} gamma ray detectors. (authors)

Sudac, D. [Rudjer Boskovic Inst., Bijenicka c. 54, 10000 Zagreb (Croatia); Majetic, S. [DOK-ING Ltd., Kanalski put 1, 10000 Zagreb (Croatia); Kollar, R. [A.C.T. D.o.o., Prilesje 4, 10000 Zagreb (Croatia); Nad, K.; Obhodas, J. [Rudjer Boskovic Inst., Bijenicka c. 54, 10000 Zagreb (Croatia); Valkovic, V. [A.C.T. D.o.o., Prilesje 4, 10000 Zagreb (Croatia)

2011-07-01T23:59:59.000Z

360

Applications of RESRAD family of computer codes to sites contaminated with radioactive residues.  

SciTech Connect (OSTI)

The RESIL4D family of computer codes was developed to provide a scientifically defensible answer to the question ''How clean is clean?'' and to provide useful tools for evaluating human health risk at sites contaminated with radioactive residues. The RESRAD codes include (1) RESRAD for soil contaminated with radionuclides; (2) RESRAD-BUILD for buildings contaminated with radionuclides; (3) RESRAD-CHEM for soil contaminated with hazardous chemicals; (4) RESRAD-BASELINE for baseline risk assessment with measured media concentrations of both radionuclides and chemicals; (5) RESRAD-ECORISK for ecological risk assessment; (6) RESRAD-RECYCLE for recycle and reuse of radiologically contaminated metals and equipment; and (7) RESRAD-OFFSITE for off-site receptor radiological dose assessment. Four of these seven codes (RESRAD, RESRAD-BUILD, RESRAD-RECYCLE, and RESRAD-OFFSITE) also have uncertainty analysis capabilities that allow the user to input distributions of parameters. RESRAD has been widely used in the United States and abroad and approved by many federal and state agencies. Experience has shown that the RESRAD codes are useful tools for evaluating sites contaminated with radioactive residues. The use of RESRAD codes has resulted in significant savings in cleanup cost. Analysis of 19 site-specific uranium guidelines is discussed in the paper.

Yu, C.; Kamboj, S.; Cheng, J.-J.; LePoire, D.; Gnanapragasam, E.; Zielen, A.; Williams, W. A.; Wallo, A.; Peterson, H.

1999-10-21T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

A study of residual stresses in Zircaloy-2 with rod texture  

SciTech Connect (OSTI)

Zircaloy-2 is a zirconium alloy used for components of fuel channels in nuclear reactors. The development of high grain-to-grain interactions in Zircaloy-2 polycrystals is due to the anisotropy of the thermal, elastic and plastic properties of the constituent grains. These residual stresses modify the mechanical performance of the material, as well as its response under neutron irradiation. Here the authors simulate the evolution of internal stresses in Zircaloy-2 with rod texture, when the aggregate is cooled down from the annealing temperature, and also when it is subjected to tensile and compressive deformation. They implement for that purpose an elasto-plastic self-consistent scheme that accounts for grain interactions, and compare the predictions with experimental determinations of residual strains obtained by neutron diffraction. The results are in good quantitative agreement with the experimental evidence, and represent a qualitative improvement over the predictions of the more rigid upper-bound approach. They discuss the role that slip and twinning systems play in the macroscopic response of the aggregate and in the evolution of internal stresses.

Turner, P.A.; Tome, C.N. (Inst. de Fisica Rosario (Argentina))

1994-12-01T23:59:59.000Z

362

Measuring multiple residual-stress components using the contour method and multiple cuts  

SciTech Connect (OSTI)

The conventional contour method determines one component of stress over the cross section of a part. The part is cut into two, the contour of the exposed surface is measured, and Bueckner's superposition principle is analytically applied to calculate stresses. In this paper, the contour method is extended to the measurement of multiple stress components by making multiple cuts with subsequent applications of superposition. The theory and limitations are described. The theory is experimentally tested on a 316L stainless steel disk with residual stresses induced by plastically indenting the central portion of the disk. The stress results are validated against independent measurements using neutron diffraction. The theory has implications beyond just multiple cuts. The contour method measurements and calculations for the first cut reveal how the residual stresses have changed throughout the part. Subsequent measurements of partially relaxed stresses by other techniques, such as laboratory x-rays, hole drilling, or neutron or synchrotron diffraction, can be superimposed back to the original state of the body.

Prime, Michael B [Los Alamos National Laboratory; Swenson, Hunter [Los Alamos National Laboratory; Pagliaro, Pierluigi [U. PALERMO; Zuccarello, Bernardo [U. PALERMO

2009-01-01T23:59:59.000Z

363

Simulation of Distortion and Residual Stress Development During Heat Treatment of Steel Castings  

SciTech Connect (OSTI)

Heat treatment and associated processing, such as quenching, are critical during high strength steel casting production. These processes must be managed closely to prevent thermal and residual stresses that may result in distortion, cracking (particularly after machining), re-work, and weld repair. The risk of casting distortion limits aggressive quenching that can be beneficial to the process and yield an improved outcome. As a result of these distortions, adjustments must be made to the casting or pattern design, or tie bars must be added. Straightening castings after heat treatments can be both time-consuming and expensive. Residual stresses may reduce a casting���¢��������s overall service performance, possibly resulting in catastrophic failure. Stress relieving may help, but expends additional energy in the process. Casting software is very limited in predicting distortions during heat treatment, so corrective measures most often involve a tedious trial-and-error procedure. An extensive review of existing heat treatment residual stress and distortion modeling revealed that it is vital to predict the phase transformations and microstructure of the steel along with the thermal stress development during heat treatment. After reviewing the state-of-the-art in heat treatment residual stress and distortion modeling, an existing commercial code was selected because of its advanced capabilities in predicting phase transformations, the evolving microstructure and related properties along with thermal stress development during heat treatment. However, this software was developed for small parts created from forgings or machined stock, and not for steel castings. Therefore, its predictive capabilities for heat treatment of steel castings were investigated. Available experimental steel casting heat treatment data was determined to be of insufficient detail and breadth, and so new heat treatment experiments were designed and performed, casting and heat treating modified versions of the Navy-C ring (a classical test shape for heat treatment experiments) for several carbon and low alloy steels in order to generate data necessary to validate the code. The predicted distortions were in reasonable agreement with the experimentally measured values. However, the final distortions in the castings were small, making it difficult to determine how accurate the predictions truly are. It is recommended that further validation of the software be performed with the aid of additional experiments with large production steel castings that experience significant heat treatment distortions. It is apparent from this research that the mechanical properties of the bonded sand used for cores and sand molds are key in producing accurate stress simulation results. Because of this, experiments were performed to determine the temperature-dependent elastic modulus of a resin-bonded sand commonly utilized in the steel casting industry. The elastic modulus was seen to vary significantly with heating and cooling rates. Also, the retained room temperature elastic modulus after heating was seen to degrade significantly when the sand was heated above 125�������°C. The elastic modulus curves developed in this work can readily be utilized in casting simulation software. Additional experiments with higher heating rates are recommended to determine the behavior of the elastic modulus in the sand close to the mold-metal interface. The commercial heat treatment residual stress and distortion code, once fully validated, is expected to result in an estimated energy savings of 2.15 trillion BTU���¢��������s/year. Along with these energy savings, reduction of scrap and improvement in casting yield will result in a reduction of the environmental emissions associated with the melting and pouring of the metal which will be saved as a result of this technology.

Christoph Beckermann; Kent Carlson

2011-07-22T23:59:59.000Z

364

Secondary wastes and high explosive residues generated during production of main high explosive charges for nuclear weapons  

SciTech Connect (OSTI)

This study identifies the sources of high-explosive (HE) residues and hazardous and nonhazardous wastes generated during the production of the main HE charges for nuclear weapons, and estimates their quantities and characteristics. The results can be used as a basis for design of future handling and treatment systems for solid and liquid HE residues and wastes at any proposed new HE production facilities. This paper outlines a general methodology for documenting and estimating the volumes and characteristics of the solid and liquid HE residues and hazardous and nonhazardous wastes. We prepared volume estimates by applying this method to actual past Pantex plant HE production operations. To facilitate the estimating, we separated the HE main-charge production process into ten discrete unit operations and four support operations, and identified the corresponding solid and liquid HE residues and waste quantities. Four different annual HE main-charge production rates of 100, 500, 1000, and 2000 HE units/yr were assumed to develop the volume estimates and to establish the sensitivity of the estimates to HE production rates. The total solids (HE residues and hazardous and nonhazardous wastes) estimated range from 800 to 2800 ft{sup 3}/yr and vary uniformly with the assumed HE production rate. The total liquids estimated range from 73,000 to 1,448,000 gal/yr and also vary uniformly with the assumed production rate.

Jardine, L.J.; McGee, J.T.

1994-02-01T23:59:59.000Z

365

On the Influence of Laser Cladding and Post-processing Strategies on Residual Stresses in Steel Specimens  

Science Journals Connector (OSTI)

Abstract Thermal cycles during laser cladding can alter mechanical properties of the original part significantly. In case of cyclically loaded parts residual stresses are suspected to be a property strongly determining fatigue life. Therefore, in this paper the influence of processing and post-processing strategies on resulting residual stresses are determined by neutron-diffraction. A low-alloy as well as a high-alloy steel have been considered within this study, both cladded with the Co-based superalloy Stellite 21. Processing speed and post-treatment by laser annealing and by deep rolling strategies have been tested. Residual stresses in low-alloyed steel show high sensitivity on applied treatment strategies. In the present study only deep rolling induced compressive residual stress close to the part surface. In high-alloy steel compressive stress in this area resulted directly after laser cladding, where its magnitude depends on processing speed. A compressive residual stress statewhich is suspected to be beneficial for fatigue strength could be achieved at the two representative steels.

H. Köhler; R. Rajput; P. Khazan; J. Rebelo Kornmeier

2014-01-01T23:59:59.000Z

366

Single-well experimental design for studying residual trapping of superciritcal carbon dioxide  

SciTech Connect (OSTI)

The objective of our research is to design a single-well injection-withdrawal test to evaluate residual phase trapping at potential CO{sub 2} geological storage sites. Given the significant depths targeted for CO{sub 2} storage and the resulting high costs associated with drilling to those depths, it is attractive to develop a single-well test that can provide data to assess reservoir properties and reduce uncertainties in the appraisal phase of site investigation. The main challenges in a single-well test design include (1) difficulty in quantifying the amount of CO{sub 2} that has dissolved into brine or migrated away from the borehole; (2) non-uniqueness and uncertainty in the estimate of the residual gas saturation (S{sub gr}) due to correlations among various parameters; and (3) the potential biased S{sub gr} estimate due to unaccounted heterogeneity of the geological medium. To address each of these challenges, we propose (1) to use a physical-based model to simulation test sequence and inverse modeling to analyze data information content and to quantify uncertainty; (2) to jointly use multiple data types generated from different kinds of tests to constrain the Sgr estimate; and (3) to reduce the sensitivity of the designed tests to geological heterogeneity by conducting the same test sequence in both a water-saturated system and a system with residual gas saturation. To perform the design calculation, we build a synthetic model and conduct a formal analysis for sensitivity and uncertain quantification. Both parametric uncertainty and geological uncertainty are considered in the analysis. Results show (1) uncertainty in the estimation of Sgr can be reduced by jointly using multiple data types and repeated tests; and (2) geological uncertainty is essential and needs to be accounted for in the estimation of S{sub gr} and its uncertainty. The proposed methodology is applied to the design of a CO{sub 2} injection test at CO2CRC's Otway Project Site, Victoria, Australia.

Zhang, Y.; Freifeld, B.; Finsterle, S.; Leahy, M.; Ennis-King, J.; Paterson, L.; Dance, T.

2010-06-15T23:59:59.000Z

367

Successful application of the Top-Layer-Sintering Process for recycling of ferrous residuals contaminated with organic substances  

SciTech Connect (OSTI)

The value of by-products and residues from steel production processes stem from their metal content and their inherent heat of combustion. However, the organic contents of sludge, scale and of other ferrous residuals make it difficult to recycle them via the conventional sinter process due to low burning rates. Insufficient burning rates will increase the dust load, could harm the ESTP and is responsible for the formation of the blue haze. The Top-Layer-Sintering Process using a second ignition hood which ignites the second layer on top of the main sinterbed has opened an economical and ecologically clean way for returning waste materials to valuable blast furnace burden by sintering. In pot grate test series and semi industrial tests the process was optimized. An industrial recycling plant for treatment of organic containing residuals is now in operation.

Kinzel, J.; Pammer, O. [Voest-Alpine Industrieanlagenbau GmbH, Linz (Austria); Trimmel, W. [Voest-Alpine Stahl Linz GmbH (Austria); Zellner, H. [Voest-Alpine Stahl Donawitz GmbH, Leoben-Donawitz (Austria)

1997-12-31T23:59:59.000Z

368

,"U.S. Sales to End Users Refiner Residual Fuel Oil and No. 4 Fuel Sales Volumes"  

U.S. Energy Information Administration (EIA) Indexed Site

Residual Fuel Oil and No. 4 Fuel Sales Volumes" Residual Fuel Oil and No. 4 Fuel Sales Volumes" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","U.S. Sales to End Users Refiner Residual Fuel Oil and No. 4 Fuel Sales Volumes",4,"Monthly","9/2013","1/15/1983" ,"Release Date:","12/2/2013" ,"Next Release Date:","1/2/2014" ,"Excel File Name:","pet_cons_refres_d_nus_vtr_mgalpd_m.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/pet/pet_cons_refres_d_nus_vtr_mgalpd_m.htm" ,"Source:","Energy Information Administration"

369

,"U.S. Sales for Resale Refiner Residual Fuel Oil and No. 4 Fuel Sales Volumes"  

U.S. Energy Information Administration (EIA) Indexed Site

Residual Fuel Oil and No. 4 Fuel Sales Volumes" Residual Fuel Oil and No. 4 Fuel Sales Volumes" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","U.S. Sales for Resale Refiner Residual Fuel Oil and No. 4 Fuel Sales Volumes",4,"Monthly","9/2013","1/15/1983" ,"Release Date:","12/2/2013" ,"Next Release Date:","1/2/2014" ,"Excel File Name:","pet_cons_refres_d_nus_vwr_mgalpd_m.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/pet/pet_cons_refres_d_nus_vwr_mgalpd_m.htm" ,"Source:","Energy Information Administration"

370

Heavy metals' content of automotive shredder residues (ASR): Evaluation of environmental risk  

Science Journals Connector (OSTI)

Every year between 8 and 9 millions of vehicles in the European Union arrive to their end of life. Car wastes can have a very high metal content, falling into hazardous waste class. A preliminary evaluation of these wastes could be made by metals' leaching test runs which is the main objective of the present study. Evaluation of the total metal content was carried out by X-ray fluorescence and the mobility of these metals using two simple standardized extractions such as the TCLP (Toxicity Characterisation Leaching Procedure) of the US EPA and the German leaching test DIN 38414–S4. Additionally, an extraction test with acetone was performed in order to recognise metals bounded to organic matter. The results show that the total metal content of the ASR can overpass the established values for inert residues. Lead and zinc contents are fairly well correlated with grain-size, whilst other metals' contents do not exhibit clear grain-size dependence.

O. Gonzalez-Fernandez; M. Hidalgo; E. Margui; M.L. Carvalho; I. Queralt

2008-01-01T23:59:59.000Z

371

Pressurized thermal and hydrothermal decomposition of algae, wood chip residue, and grape marc: A comparative study  

Science Journals Connector (OSTI)

Abstract Pressurized thermal decomposition of two marine algae, Pinus radiata chip residue and grape marc using high temperature, high pressure reactions has been studied. The yields and composition of the products obtained from liquefactions under CO of a mixture of biomass and H2O (with or without catalyst) were compared with products from liquefaction of dry biomass under N2, at different temperatures, gas pressures and for CO runs, water to biomass ratios. Thermochemical reactions of algae produced significantly higher dichloromethane solubles and generally higher product yields to oil and asphaltene than Pinus radiata and grape marc under the reaction conditions used. Furthermore, the biofuels derived from algae contained significant concentrations of aliphatic hydrocarbons as opposed to those from radiata pine and grape marc which were richer in aromatic compounds. The possibility of air transport fuel production from algae thus appears to have considerable advantages over that from radiata pine and grape marc.

Dirgarini J.N. Subagyono; Marc Marshall; W. Roy Jackson; Alan L. Chaffee

2014-01-01T23:59:59.000Z

372

Removal of residual uranium in simulated radwaste solution by TBP extraction  

SciTech Connect (OSTI)

The extraction behavior of uranium in a multicomponent system simulated on the basis of high-level liquid waste was examined in order to find effective conditions for the removal of residual uranium in a simulated radwaste solution by the TBP solvent extraction method. While the conventional semiempirical equation for the distribution coefficient of uranium could be used in a system composed of only uranium and nitric acid, it was found to be unsuitable for a multicomponent system where the concentration of uranium is not dominant. Uranium extractability by TBP was found to be limited in multicomponents systems regardless of high TBP concentration, phase ratio, and extraction times because of the presence of neodymium and iron together with uranium in the systems.

Kim, Kwang-Wook; Lee, Eil-Hee; Shin, Young-Joon [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)] [and others

1995-10-01T23:59:59.000Z

373

Mapping residual stress fields from Vickers hardness indents using Raman microprobe spectroscopy  

SciTech Connect (OSTI)

Micro-Raman spectroscopy is used to map the residual stress fields in the vicinity of Vickers hardness indents. Both 514.5 and 488.0 nm, light is used to excite the effect and the resulting shifted and broadened Raman peaks are analyzed using computer deconvolution. Half-wave plates are used to vary the orientation of the incident later light`s polarization state with respect to crystal orientation. The Raman scattered light is then analyzed for polarization dependences which are indicative of the various components of the Raman scattering tensor. Such studies can yield valuable information about the orientation of stress components in a well known stress field. The results can then be applied to the determination of stress components in machined semiconductor materials.

Sparks, R.G.; Enloe, W.S.; Paesler, M.A.

1988-12-01T23:59:59.000Z

374

Ettringite-Induced Heave in Chromite Ore Processing Residue (COPR) upon Ferrous Sulfate Treatment  

Science Journals Connector (OSTI)

Ettringite-Induced Heave in Chromite Ore Processing Residue (COPR) upon Ferrous Sulfate Treatment ... The pH increase caused initially precipitated gypsum (CaSO4·2H2O) to progressively convert to ettringite (Ca6Al2(SO4)3·32H2O) and its associated volume expansion under both in situ and ex situ conditions, with a maximum of 0.8 m vertical swell within 40 days of curing. ... While Cr(VI) treatment remains a challenge, the intentional exhaustion of the heave potential of COPR by transforming all Al sources to ettringite emerges as a possible solution to delayed ettringite formation, which would hamper site redevelopment. ...

Dimitris Dermatas; Maria Chrysochoou; Deok Hyun Moon; Dennis G. Grubb; Mahmoud Wazne; Christos Christodoulatos

2006-08-10T23:59:59.000Z

375

Impact of forest biomass residues to the energy supply chain on regional air quality  

Science Journals Connector (OSTI)

Abstract The increase of the share of renewable energy in Portugal can be met from different sources, of which forest biomass residues (FBR) can play a main role. Taking into account the demand for information about the strategy of FBR to energy, and its implications on the Portuguese climate policy, the impact of energy conversion of FBR on air quality is evaluated. Three emission scenarios were defined and a numerical air quality model was selected to perform this evaluation. The results reveal that the biomass thermal plants contribute to an increment of the pollutant concentrations in the atmosphere, however restricted to the surrounding areas of the thermal plants, and most significant for NO2 and O3.

S. Rafael; L. Tarelho; A. Monteiro; E. Sá; A.I. Miranda; C. Borrego; M. Lopes

2015-01-01T23:59:59.000Z

376

Measurement of evaporation residue excitation functions for the F19 + Pt194,196,198 reactions  

Science Journals Connector (OSTI)

Experimental measurements of evaporation residue (ER) cross sections for the F19 + Pt194,196,198 reactions forming Fr213,215,217 compound nuclei are reported. The cross sections are measured at beam energies in the range of 101–137.3 MeV. The survival probability of the Fr213 compound nucleus with neutron number N=126 is found to be lower than the survival probabilities of Fr215 and Fr217 with neutron numbers N=128 and 130 respectively. Statistical model analysis of the ER cross sections show that an excitation energy dependent scaling of the finite-range rotating liquid drop model fission barrier is necessary to fit the experimental data. The fitted scaling factors for Fr213 are found to be smaller than those of Fr215 and Fr217 for almost the entire range of excitation energies.

Varinderjit Singh; B. R. Behera; Maninder Kaur; A. Kumar; K. P. Singh; N. Madhavan; S. Nath; J. Gehlot; G. Mohanto; A. Jhingan; Ish Mukul; T. Varughese; Jhilam Sadhukhan; Santanu Pal; S. Goyal; A. Saxena; S. Santra; S. Kailas

2014-02-18T23:59:59.000Z

377

Demonstration of a computer model for residual radioactive material guidelines, RESRAD  

SciTech Connect (OSTI)

A computer model was developed to calculate residual radioactive material guidelines for the US Department of Energy (DOE). This model, called RESRAD, can be run on IBM or IBM-compatible microcomputer. Seven potential exposure pathways from contaminated soil are analyzed, including external radiation exposure and internal radiation exposure from inhalation and food digestion. The RESRAD code has been applied to several DOE sites to derive soil cleanup guidelines. The experience gained indicates that a comprehensive set of site-specific hydrogeologic and geochemical input parameters must be used for a realistic pathway analysis. The RESRAD code is a useful tool; it is easy to run and very user-friendly. 6 refs., 12 figs.

Yu, C.; Yuan, Y.C.; Zielen, A.J.; Wallo, A. III (Argonne National Lab., IL (USA); USDOE, Washington, DC (USA))

1989-01-01T23:59:59.000Z

378

,"U.S. Residual Fuel Oil Prices by Sales Type"  

U.S. Energy Information Administration (EIA) Indexed Site

Prices by Sales Type" Prices by Sales Type" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Residual Fuel Oil Average",2,"Monthly","9/2013","1/15/1983" ,"Data 2","Sulfur Less Than or Equal to 1%",2,"Monthly","9/2013","1/15/1983" ,"Data 3","Sulfur Greater Than 1%",2,"Monthly","9/2013","1/15/1983" ,"Release Date:","12/2/2013" ,"Next Release Date:","1/2/2014" ,"Excel File Name:","pet_pri_resid_dcu_nus_m.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/pet/pet_pri_resid_dcu_nus_m.htm"

379

,"Residual Fuel Oil Sales to End Users Refiner Sales Volumes"  

U.S. Energy Information Administration (EIA) Indexed Site

Sales to End Users Refiner Sales Volumes" Sales to End Users Refiner Sales Volumes" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Residual Fuel Oil Sales to End Users Refiner Sales Volumes",9,"Monthly","9/2013","1/15/1983" ,"Release Date:","12/2/2013" ,"Next Release Date:","1/2/2014" ,"Excel File Name:","pet_cons_refres_a_eppr_vtr_mgalpd_m.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/pet/pet_cons_refres_a_eppr_vtr_mgalpd_m.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.gov"

380

Residual oil saturation determination. Wilmington micellar-polymer project. Final report  

SciTech Connect (OSTI)

The City of Long Beach, California conducted a program to obtain residual oil saturation (ROS) data in the HX/sub a/ Sand, Fault Block VB, Wilmington Field. This program utilized many complementary techniques for determining the ROS in a watered-out unconsolidated sand, typical of many reservoirs in the California Coastal Province. This program was to be performed in two stages. The first, Phase 1, was intended to determine the ROS in an area which had been flooded out during the course of a peripheral waterflood and to make a comparative analysis of current methods for determination of in-situ oil in place. The second stage, Phase 2 of the ROS program, was intended to measure the ROS after tertiary recovery by a micellar-polymer flood; however, the second phase was not carried out for lack of funds. This report describes the diagnostic tools and techniques which have been used to establish ROS. It then presents a comparative analysis of the results obtained using the different techniques. Inasmuch as the determination of in-situ oil saturation is directly dependent upon the in-situ value for porosity, it is required that the pore volume as a fraction of the reservoir rock be determined before the residual oil equation can be solved. Because of this, much of the study necessarily was concerned with measurement of porosity of the unconsolidated sand. The method finally used to obtain a very good core recovery in this highly unconsolidated sand is described. Present oil saturation and oil content of the HX/sub a/ sand in the Pilot is now believed to be better defined. This conclusion is supported by results obtained for electrical log analysis, analysis of full sized native state cores run under stress conditions, plug core analysis under stressed conditions and a Single-Well Tracer Survey. 15 references, 18 figures, 16 tables.

Staub, H.L.

1983-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Residual biomass recovery from fully-mechanized delayed thinnings on Spanish Pinus spp. plantations  

Science Journals Connector (OSTI)

Abstract In Spain, five million hectares of conifer plantations require thinning. As only a small part produces pulpwood, they are a major potential biomass resource. A time-study is performed on the recovery of logging residues in a Pinus plantation on gentle terrain in order to analyze the main factors affecting the productivity and cost of biomass and pulpwood harvesting. The first factor is the branches and tops piling method, either using the forest harvester head to bunch them along the strip road sides (method S) while processing the timber, or leaving them on the strip road centre (method C) and using a 175 HP bulldozer with a raking implement to pile them up afterwards. The second factor is the top diameter separating pulpwood and biomass, 8 or 10 cm. Mechanized felling-processing productivity is greater for the method C and the smaller diameter. Hauling biomass off with forwarder is also significantly more productive when piled by bulldozer. Productivity equations were fitted for pulpwood and biomass forwarding. The direct cost of biomass recovery ranged from €29.7 to €31.5 per green tonne (H = 51%). The roundwood and biomass effective yields – per hectare – were measured. This allowed evaluating the cost balance for roundwood/roundwood plus biomass harvesting, based on the net income per hectare. Under the 2013 Spanish market conditions, recovery of residual biomass is economically preferable to harvesting only roundwood in the studied stands. The greater net income balance corresponds to the piling method using the bulldozer (C) and the larger top diameter (10 cm).

E. Tolosana; R. Laina; Y. Ambrosio; M. Martín

2014-01-01T23:59:59.000Z

382

Quasifission and difference in formation of evaporation residues in the $^{16}$O+$^{184}$W and $^{19}$F+$^{181}$Ta reactions  

E-Print Network [OSTI]

The excitation functions of capture, complete fusion, and evaporation residue formation in the $^{16}$O+$^{184}$W and $^{19}$F+$^{181}$Ta reactions leading to the same $^{200}$Pb compound nucleus has been studied theoretically to explain the experimental data showing more intense yield of evaporation residue in the former reaction in comparison with that in the latter reaction. The observed difference is explained by large capture cross section in the former and by increase of the quasifission contribution to the yield of fission-like fragments in the $^{19}$F+$^{181}$Ta reaction at large excitation energies. The probability of compound nucleus formation in the $^{16}$O+$^{184}$W reaction is larger but compound nuclei formed in both reactions have similar angular momentum ranges at the same excitation energy. The observed decrease of evaporation residue cross section normalized to the fusion cross section in the $^{19}$F+$^{181}$Ta reaction in comparison with the one in the $^{16}$O+$^{184}$W reaction at high excitation energies is explained by the increase of hindrance in the formation of compound nucleus connected with more quick increase of the quasifission contribution in the $^{19}$F induced reaction. The spin distributions of the evaporation residue cross sections for the two reactions are also presented.

A. K. Nasirov; G. Mandaglio; M. Manganaro; A. I. Muminov; G. Fazio; G. Giardina

2009-08-13T23:59:59.000Z

383

Journal of Nondestructive Evaluation, Vol. 23, No. 3, September 2004 ( C 2004) Eddy Current Assessment of Near-Surface Residual  

E-Print Network [OSTI]

reason why nickel-base superalloys, which are often used in the most critical gas-turbine engine applications, including gas-turbine engines. Modern aircraft turbine engine components are designed using Assessment of Near-Surface Residual Stress in Shot-Peened Nickel-Base Superalloys Mark P. Blodgett1 and Peter

Nagy, Peter B.

384

Cold drawn steel wires--processing, residual stresses and ductility--part I: metallography and finite element analyses  

E-Print Network [OSTI]

Cold drawn steel wires--processing, residual stresses and ductility--part I: metallography form 29 September 2005 ABSTRACT Cold drawing steel wires lead to an increase of their mechanical that, though the steel wires are plastically deformed up to strain levels as high as 3.5, a significant

385

EIS-0109: Long-Term Management of the Existing Radioactive Wastes and Residues at the Niagara Falls Storage Site  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy developed this statement to evaluate the environmental impacts of several alternatives for management and control of the radioactive wastes and residues at the Niagara Falls Storage Site, including a no action alternative, an alternative to manage wastes on-site, and two off-site management alternatives.

386

Neutron and x-ray scattering studies of the metallurgical condition and residual stresses in Weldalite welds  

SciTech Connect (OSTI)

Weldalite is a lithium-containing aluminum alloy which is being considered for aerospace applications because its favorable strength-to-weight ratio. Successful welding of this alloy depends on the control of the metallurgical condition and residual stresses in the heat affected zone. Neutron and x-ray scattering methods of residual stress measurement were applied to plasma arc welds made in aluminum-lithium alloy test panels as part of an evaluation of materials for use in welded structures. In the course of these studies discrepancies between x-ray and neutron results from the heat affected zone (HAZ) of the weld were found. Texture changes and recovery from the cold work, indicated in peak widths, were found in the HAZ as well. The consideration of x-ray and neutron results leads to the conclusion that there is a change in solute composition which modifies the d-spacings in the HAZ which affects the neutron diffraction determination of residual stresses. The composition changes give the appearance of significant compressive strains in the HAZ. This effect and sharp gradients in the texture give severe anomalies in the neutron measurement of residual stress. The use of combined x-ray and neutron techniques and the solution to the minimizing of the neutron diffraction anomalies are discussed.

Spooner, S. [Oak Ridge National Lab., TN (United States); Pardue, E.B.S. [Technology for Energy Corp., Knoxville, TN (United States)

1995-12-31T23:59:59.000Z

387

Solid waste management of coal conversion residuals from a commercial-size facility: environmental engineering aspects. Final report  

SciTech Connect (OSTI)

Major residuals generated by the conversion process and its auxiliary operations include: (a) coal preparation wastes; (b) gasifier ash; (c) liquefaction solids-char; (d) tail gas or flue gas desulfurization sludge; (e) boiler flyash and bottom ash; (f) raw water treatment sludge, and; (g) biosludges from process wastewater treatment. Recovered sulfur may also require disposal management. Potential environmental and health impacts from each of the residues are described on the basis of characterization of the waste in the perspective of water quality degradation. Coal gasification and liquefaction systems are described in great detail with respect to their associated residuals. Management options are listed with the conclusion that land disposal of the major residual streams is the only viable choice. On-site versus off-site disposal is analyzed with the selection of on-site operations to reduce political, social and institutional pressures, and to optimize the costs of the system. Mechanisms for prevention of leachate generation are described, and various disposal site designs are outlined. It is concluded that co-disposal feasibility of some waste streams must be established in order to make the most preferred solid waste management system feasible. Capacity requirements for the disposal operation were calculated for a 50,000 bbl/day coal liquefaction plant or 250 million SCF/day gasification operation.

Bern, J.; Neufeld, R. D.; Shapiro, M. A.

1980-11-30T23:59:59.000Z

388

Characterization of contaminants in oil shale residuals and the potential for their management to meet environmental quality standards. Final report  

SciTech Connect (OSTI)

Some general aspects of various oil shale processes developed for scale-up to commercial size modular units are described. The overall magnitude of an envisioned commercial shale oil operation and the magnitude of resulting potentially polluting residues in particular solid residues from retorting oil shale and associated operations and wastewater from retort streams and other sources are considered. The potential problems ensuing from self-oxidation of stockpiles of oil shale and from residual carbonaceous retorted oil shale disposed above ground and/or from in situ retorting operations are examined. Some methods for managing self-heating processes are suggested. The most plausible method of avoiding potential self-heating for retorted oil shale is to oxidize as much as possible of the organic carbon present by utilizing a process that will produce low carbon or carbon-free retorted oil shale residues. In the case of unretorted oil shale, the dimensions and shapes of the stockpiles should be designed such that heat build-up is eliminated or kept to a minimum.

Schmidt-Collerus, J.J.

1984-02-01T23:59:59.000Z

389

Prediction of machining induced residual stresses in turning of titanium and nickel based alloys with experiments and finite element simulations  

E-Print Network [OSTI]

such as in aircraft/industrial gas turbine engines. Particularly, IN100 nickel-based alloy manufactured via powder-mechanical load on the workpiece material is released, the residual stresses that remain in the material after stress, which is considered detrimental to the fatigue life of the component, the machined component

Ozel, Tugrul

390

Evaluation of improved materials for stationary diesel engines operating on residual and coal based fuels. Final report  

SciTech Connect (OSTI)

Experimental results to date from an on-going research program on improved materials for stationary diesel engines using residual or coal-based fuels are presented with little discussion of conclusions about these results. Information is included on ring and liner wear, fuel oil qualities, ceramic materials, coatings, test procedures and equipment, and tribology test results. (LCL)

Not Available

1980-01-01T23:59:59.000Z

391

CONDENSATION/ADSORPTION AND EVACUATION OF RESIDUAL GASES IN THE SRF SYSTEM FOR THE CESR LUMINOSITY UPGRADE  

E-Print Network [OSTI]

cavity RBT transition HOM absorber FBT transition Nb waveguide Heat exchanger 270 l/s ion pump RF windowCONDENSATION/ADSORPTION AND EVACUATION OF RESIDUAL GASES IN THE SRF SYSTEM FOR THE CESR LUMINOSITY coupler performance in a superconducting RF system. It is there- fore important to understand condensation/adsorption

Geng, Rong-Li

392

Residual Stress in CVD-grown 3C-SiC Films on Si Substrates Alex A. Volinsky1  

E-Print Network [OSTI]

on 50 mm (100) and (111) Si substrates in a hot-wall CVD reactor. The film tensile residual stress was non-uniform, having a linear profile along the growth direction. This presented a challenge of using to deposit SiC on Si wafers due to their high quality and low cost, in comparison to SiC substrates. However

Volinsky, Alex A.

393

Mutual Information Analysis Reveals Coevolving Residues in Tat That Compensate for Two Distinct Functions in HIV-1  

E-Print Network [OSTI]

, Xiamen University, Xiamen 361005, China Background: It is not well understood how HIV-1 Tat performs, Tat variants that mimic HIV-1 subtypes B or C at sites 35 and 39 have evolved orthogonal strengthsMutual Information Analysis Reveals Coevolving Residues in Tat That Compensate for Two Distinct

Schaffer, David V.

394

Simultaneous Determination of 16 Pyrethroid Residues in Tea Samples Using Gas Chromatography and Ion Trap Mass Spectrometry  

Science Journals Connector (OSTI)

......67-64-1 Acetone | Acetone Gas Chromatography-Mass...are widely used in tea production, and pesticide residues...Analysis was performed by gas chromatography with ion...chroma- tography (LC), gas chromatography (GC...sensitive, and low- cost detection for pyrethroids......

Kuang Hua; Miao Hong; Hou Xiaolin; Zhao Yunfeng; Wu Yongning; Xu Chuanlai

2010-10-01T23:59:59.000Z

395

Experimental and finite-element study of residual stresses in Zircaloy-4(R) and OFHC copper tubes  

SciTech Connect (OSTI)

Nonhomogeneous plastic deformation associated with metal-forming operations results in a state of residual stress in the final product. In the experimental phase of this study, residual stress distribution in Zr-4(R) and copper tubes is determined by electropolishing the outer (or inner) and surface of the tubes while measuring the developed strains at the inner (or outer) surface. Material removal by electropolishing proved to be an efficient and suitable technique due to its constant mass removal rate under conditions which do not alter the patter of residual stresses in the specimen. In the case of Zr-4(R) specimens, experiments were conducted on the as-received (stress relieved) as well as specimens annealed at 500 C for one hour. The effect of various degrees of cold working on the residual stress patterns of drawn copper tubing is determined by performing similar experiments on soft, 1/4-hard, 1/2-hard, and hard temper, OFHC copper specimens. In the second phase of this investigation, an elastic-plastic finite-element code (ABAQUS) is employed in a parametric study to determined the optimum processing conditions for drawing copper tubes.

Rasty, J.

1987-01-01T23:59:59.000Z

396

UNLOCKING ANCIENT DIET: USING STARCH GRANULES IN FOOD RESIDUE FROM COOKING CERAMICS TO ANALYZE PRE-COLUMBIAN ERA CADDO DIET  

E-Print Network [OSTI]

This thesis examines the nature of food residues on sherds of ancient Caddoan ceramic cooking vessels from East Texas, which was the homeland of Caddoan peoples for more than 2,000 years. Interior surfaces of some ceramic cooking vessels retain...

Skrla, Amy

2011-04-28T23:59:59.000Z

397

Equivalent CPT Method for Calculating Shallow Foundation Settlements in the Piedmont Residual Soils Based on the DMT Constrained Modulus Approach.  

E-Print Network [OSTI]

Equivalent CPT Method for Calculating Shallow Foundation Settlements in the Piedmont Residual Soils the Piedmont physiographic province, an equivalent method has been developed for the CPT to obtain constrained to the measured cone tip resistance (qc), particularly in fine sandy soils (e.g., M' = 2 qc). This too utililized

Mayne, Paul W.

398

Leachability of automotive shredder residues burned in a fluidized bed system  

Science Journals Connector (OSTI)

This paper presents the results of the study of a combustible fraction of automotive shredder residues (CASRs) and the corresponding ashes generated by combustion on a fluidized bed pilot with the aim to understand the influence of thermal treatment regarding properties for final disposal, such as landfilling. The chemical composition was evaluated and the leachability behaviour of ashes and CASR was investigated using the three more commonly used tests: the European Standard EN 12457, the US TCLP-EPA 1311 and the Dutch availability test EA NEN 7371. Different results were obtained depending on the specific conditions of the methods employed. It was found that both the CASR and the ashes contained large amounts of toxic metals and other undesirable elements, such as Cl and S. For the CASR, in addition to the leachability of organic matter above the limit set for hazardous materials, the release of heavy metals, either under alkaline and acidic conditions was significant, revealing the serious risks associated to the landfilling practices still being undertaken worldwide. Release of organic matter from ashes was insignificant, but solubility of sulphates increased and chlorides exceed the hazardous limits in the case of fly ashes. Toxic metals were found to leach from the ashes only under acidic conditions, except Pb and Cu which also leached from finer ashes at alkaline pH. Cr also leached from ashes at alkaline pH values. Both the Dutch availability and TCLP revealed much higher leaching intensities than the European Standard due to the acidity of leachants. However, it was found that ashes may be more resistant to acidification because they exhibit much higher acid neutralization capacity (ANC) than the untreated CASR. The study undertaken shows that thermal valorisation of the combustible fraction of ASR may avoid the risks associated with their landfilling; however, care has to be taken with the ashes because they also behave as hazardous residues. Although, the mass reduction provided by thermal treatment may make landfilling less expensive, a more profitable reutilization of the ashes should be developed.

M.H. Lopes; M. Freire; M. Galhetas; I. Gulyurtlu; I. Cabrita

2009-01-01T23:59:59.000Z

399

Test for consistence of a flyby anomaly simulation with the observed Doppler residuals for the Messenger flybys of Mercury  

E-Print Network [OSTI]

In 2007, the observed Earth flyby anomalies have been successfully simulated using an empirical formula (H. J. Busack, 2007). This simulation has led to the prediction of anomaly values, to be expected for the Rosetta flybys of Mars in 2007, and following twice of Earth in 2007 and 2009. While the data for the Mars flyby are yet under evaluation, the predictions of the formula for the last two Earth flybys of Rosetta are fully confirmed now. This is remarkable, since an alternatively proposed formula (Anderson et al., 2007) failed to predict the correct values for the recent flybys. For the Mercury flybys of the Messenger spacecraft, this alternative formula predicts a null result. In the meantime, Doppler residuals of these flybys on 14.01.2008 and 06.10.2008 are availabel. On both flybys, significant residuals were observed, using gravity data derived by Mariner 10 on Mercury (D. E. Smith et al., 2009). According to the authors, these residuals cannot be eliminated totally by adjustment of the second degree gravity coefficients and by assumption of irregular mass concentrations of acceptable value on Mercury. In this investigation, I adapt the output of the simulation program to compare with the measured Doppler residuals of the Mercury flybys without changing the formerly derived parameters for the Earth flybys. The simulation with these parameters leads to Doppler residuals of the Mercury flybys compatible with the measured curves. Additionally, the expected flyby anomalies are calculated. Since the gravity field of Mercury is not explored yet with sufficient accuracy, this result cannot be falsified or confirmed until the evaluation of the coming Mercury orbits of Messenger will be finished. If the proposed empirical formula would be confirmed then again, this would be a strong indication of an underlying physical reality.

Hans-Juergen Busack

2010-03-07T23:59:59.000Z

400

A weak acceleration effect due to residual gravity in a multiply connected universe  

E-Print Network [OSTI]

Could cosmic topology imply dark energy? We use a weak field (Newtonian) approximation of gravity and consider the gravitational effect from distant, multiple copies of a large, collapsed (virialised) object today (i.e. a massive galaxy cluster), taking into account the finite propagation speed of gravity, in a flat, multiply connected universe, and assume that due to a prior epoch of fast expansion (e.g. inflation), the gravitational effect of the distant copies is felt locally, from beyond the naively calculated horizon. We find that for a universe with a $T^1xR^2$ spatial section, the residual Newtonian gravitational force (to first order) provides an anisotropic effect that repels test particles from the cluster in the compact direction, in a way algebraically similar to that of dark energy. For a typical test object at comoving distance $\\chi$ from the nearest dense nodes of the cosmic web of density perturbations, the pressure-to-density ratio $w$ of the equation of state in an FLRW universe, is w \\sim - (\\chi/L)^3, where $L$ is the size of the fundamental domain, i.e. of the universe. Clearly, |w|dark energy, but the amplitude of the effect at the present epoch is too small to explain the observed dark energy density and its anisotropy makes it an unrealistic candidate for the observed dark energy.

Boudewijn F. Roukema; Stanislaw Bajtlik; Marek Biesiada; Agnieszka Szaniewska; Helena Jurkiewicz

2006-12-08T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Modelling of automobile shredder residue recycling in the Japanese legislative context  

Science Journals Connector (OSTI)

Abstract End-of-life vehicles (ELVs) represent one of the most important waste flows in Japan and 3.58 million was processed only in fiscal year 2008. In an attempt to reduce waste originating from ELVs, the Japanese Government introduced the ELV Recycling Law in 2002. Automobile shredder residue (ASR) recycling is essential to achieving the goals of the ELV Recycling Law and represents a major concern for the Japanese vehicle recycling industry. This paper proposes the tactical ASR recycling planning model, which can be used to assist Japanese vehicle recyclers to improve their profitability and ASR recycling efficiency. A numerical study is conducted in order to illustrate the potentials and applicability of the proposed modelling approach, and to gain insights into the performances of the Japanese vehicle recycling system and into the influence of the ELV Recycling Law. Sensitivity analyses demonstrate and validate the approach and its potentials. ELV Recycling Law influence is found to be crucial for the decision making on ASR recycling, as the 20% increase in valid recycling quota will cause approximately 50% decrease in the quantity of disposed ASR. We show that the stringent ASR recycling quota is easily attainable and present many interesting insights.

Vladimir Simic; Branka Dimitrijevic

2013-01-01T23:59:59.000Z

402

Review of Italian experience on automotive shredder residue characterization and management  

Science Journals Connector (OSTI)

Abstract Automotive Shredder Residue (ASR) is a special waste that can be classified as either hazardous or non hazardous depending on the amount of hazardous substances and on the features of leachate gathered from EN12457/2 test. However both the strict regulation concerning landfills and the EU targets related to End-of-Life Vehicles (ELVs) recovery and recycling rate to achieve by 2015 (Directive 2000/53/EC), will limit current landfilling practice and will impose an increased efficiency of \\{ELVs\\} valorization. The present paper considers \\{ELVs\\} context in Italy, taking into account \\{ASRs\\} physical–chemical features and current processing practice, focusing on the enhancement of secondary materials recovery. The application in waste-to-energy plants, cement kilns or metallurgical processes is also analyzed, with a particular attention to the possible connected environmental impacts. Pyrolysis and gasification are considered as emerging technologies although the only use of ASR is debatable; its mixing with other waste streams is gradually being applied in commercial processes. The environmental impacts of the processes are acceptable, but more supporting data are needed and the advantage over (co-)incineration remains to be proven.

R. Cossu; S. Fiore; T. Lai; A. Luciano; G. Mancini; B. Ruffino; P. Viotti; M.C. Zanetti

2014-01-01T23:59:59.000Z

403

Synthesis of Al-substituted 11 A tobermorite from newsprint recycling residue: a feasibility study  

SciTech Connect (OSTI)

Newsprint recycling is responsible for significant volumes of secondary waste material for which further reprocessing and market development would be beneficial. In response to this problem, a layer lattice, ion exchange material, Al-substituted 11 A tobermorite, has been synthesised from newsprint recycling residue comprising gehlenite (Ca{sub 2}Al{sub 2}SiO{sub 7}), akermanite (Ca{sub 2}MgSi{sub 2}O{sub 7}), {beta}-dicalcium silicate (Ca{sub 2}SiO{sub 4}) and anorthite (CaAl{sub 2}Si{sub 2}O{sub 8}) under hydrothermal conditions at 100 deg. C in the presence of NaOH. The hydrogarnet phase, katoite (Ca{sub 3}Al{sub 2}SiO{sub 12}H{sub 8}), was also formed. Similar treatment regimes in the presence of LiOH and KOH did not yield significant quantities of Al-substituted 11 A tobermorite. A batch sorption study confirmed that the Al-substituted 11 A tobermorite-bearing product was effective in the exclusion of Cd{sup 2+}, Pb{sup 2+} and Zn{sup 2+} from acidified aqueous media. The potential to enhance the yield of Al-substituted 11 A tobermorite relative to that of katoite and thus optimise the ion exchange efficiency of the product is discussed with respect to its application to heavy metal-contaminated wastewater treatment.

Coleman, Nichola J.; Brassington, David S

2003-02-20T23:59:59.000Z

404

Advanced thermal treatment of auto shredder residue and refuse derived fuel  

Science Journals Connector (OSTI)

The disposal of End-of-Life Vehicles (ELVs) results in a highly heterogeneous polymeric waste stream of Automobile shredder residue (ASR). Within Europe, strict legislation, such as the End-of-Life Vehicle Directive and the Landfill Directive, has imposed targets for reducing this waste stream and diverting the material away from landfill. One pathway open to recyclers is to thermally process these wastes, but the presence of chlorine and metallic species can present challenges to traditional incineration technologies. This paper discusses the use of Gasplasma®, an advanced thermal treatment technology, comprising fluidised bed oxy-steam gasification followed by plasma treatment, for ASR, refuse derived fuel (RDF) and blends of ASR and RDF wastes. The work demonstrates the ability to process these highly heterogeneous materials achieving high energy conversion (87–94%) and virtually complete carbon conversion, producing a calorific synthetic gas (syngas) capable of being used for power generation or as a chemical feedstock. The actual conversion efficiency achieved is dependent on feed chemistry and properties. The study also shows that ash components of the feed material can be transformed into an environmentally stable vitrified product.

Richard Taylor; Ruby Ray; Chris Chapman

2013-01-01T23:59:59.000Z

405

Investigation of coal char-slag transition during oxidation: effect of temperature and residual carbon  

SciTech Connect (OSTI)

The transition of coal char to molten slag at high conversion was studied for a bituminous coal using a laminar entrained-flow reactor under oxidizing conditions. Post-oxidized char particles were analyzed by various techniques including loss-on-ignition, gas adsorption analysis, and scanning electron microscopy to determine carbon content, internal surface area and pore size distribution, and char morphology, respectively. These analyses provide information concerning the effect of temperature and residual carbon on the transition from porous char to molten slag. Results showed that, at temperatures above the ash flow temperature, the transition from porous char to molten slag occurred at about 90% conversion for the coal used in this study. No transition occurred at temperatures below the ash flow temperature. This finding explains previous observations that there is a coal-dependent critical carbon conversion at which the ash stickiness increases dramatically. This result also indicates that surface area can be used as a criterion for determining the critical conversion of the transition. In addition, it was found that the randomly overlapping pore model cannot be directly applied to predict the surface area evolution of char particles during the transition without considering the reopening of closed micropores during the initial reaction and the ash fusion effect. 33 refs., 9 figs., 2 tabs.

Suhui Li; Kevin J. Whitty [University of Utah, Salt Lake City, UT (United States). Institute for Clean and Secure Energy

2009-04-15T23:59:59.000Z

406

Size distribution of metals in particulate matter formed during combustion of residual fuel oil  

SciTech Connect (OSTI)

Between July 1992 and January 1993 three full-scale test programs were performed by Carnot for the Electric Power Research Institute and the Fuel Oil Users` Support (FOUS) Group, as part of a program for development and testing of various stack emissions models. One of the components of the program was determination of the concentrations of individual elements as a function of the size of particles suspended in flue gas. The size distributions of species are important because several aspects of system performance depend upon particulate matter size and composition: (1) the rate of ash deposition in the convection section, and activity of deposits for high temperature corrosion and SO{sub 3} formation, (2) the efficiency of precipitators for collection of individual elements, and (3) scattering of visible light and contribution of particles to stack plume opacity. Size distributions of major ash constituents were measured at the entrance and exit of the dust collectors during each of the field tests. To the authors` knowledge, these are the first reports of such measurements in residual oil-fired utility boilers. The focus, in the present paper, is on the composition of the particles entering the dust collectors.

Walsh, P. [Pennsylvania State Univ., University Park, PA (United States); Rovesti, W.C. [Electric Power Research Institute, Washington, DC (United States); Freeman, R.F. [Niagara Mohawk Power Corp., Oswego, NY (United States); Olen, K.R.; Washington, K.T.; Patrick, S.T.; Campbell, G.L.; Harper, D.S. [Florida Power & Light Co., West Palm Beach, FL (United States); Teetz, R.D.; Bennett, T.E. [Long Island Lighting Co., Glenwood Landing, NY (United States)] [and others

1994-08-01T23:59:59.000Z

407

Risk management considerations for seismic upgrading of an older facility for short-term residue stabilization  

SciTech Connect (OSTI)

Building 707 and its addition, Building 707A, were selected, after the production mission of Rocky Flats was terminated a few years ago, to stabilize many of the plutonium residues remaining at the site by 2002. The facility had undergone substantial safety improvements to its safety systems and conduct of operations for resumption of plutonium operations in the early 1990s and appeared ideally suited for this new mission to support accelerated Site closure. During development of a new authorization basis, a seismic evaluation was performed. This evaluation addressed an unanalyzed expansion joint and suspect connection details for the precast concrete tilt-up construction and concluded that the seismic capacity of the facility is less than half of that determined by previous analysis. Further, potential seismic interaction was identified between a collapsing Building 707 and the seismically upgraded Building 707A, possibly causing the partial collapse of the latter. Both the operating contractor and the Department of Energy sought a sound technical basis for deciding how to proceed. This paper addresses the risks of the as-is facility and possible benefits of upgrades to support a decision on whether to upgrade the seismic capacity of Building 707, accept the risk of the as-is facility for its short remaining mission, or relocate critical stabilization missions. The paper also addresses the Department of Energy`s policy on natural phenomena.

Additon, S.L.; Peregoy, W.L. [TENERA Rocky Flats, LLC, Golden, CO (United States); Foppe, T.L. [Foppe and Associates, Inc., Golden, CO (United States)

1999-06-01T23:59:59.000Z

408

Allowable Residual Contamination Levels in soil for decommissioning the Shippingport Atomic Power Station site  

SciTech Connect (OSTI)

As part of decommissioning the Shippingport Atomic Power Station, a fundamental concern is the determination of Allowable Residual Contamination Levels (ARCL) for radionuclides in the soil at the site. The ARCL method described in this report is based on a scenario/exposure-pathway analysis and compliance with an annual dose limit for unrestricted use of the land after decommissioning. In addition to naturally occurring radionuclides and fallout from weapons testing, soil contamination could potentially come from five other sources. These include operation of the Shippingport Station as a pressurized water reactor, operations of the Shippingport Station as a light-water breeder, operation of the nearby Beaver Valley reactors, releases during decommissioning, and operation of other nearby industries, including the Bruce-Mansfield coal-fired power plants. ARCL values are presented for 29 individual radionculides and a worksheet is provided so that ARCL values can be determined for any mixture of the individual radionuclides for any annual dose limit selected. In addition, a worksheet is provided for calculating present time soil concentration value that will decay to the ARCL values after any selected period of time, such as would occur during a period of restricted access. The ARCL results are presented for both unconfined (surface) and confined (subsurface) soil contamination. The ARCL method and results described in this report provide a flexible means of determining unrestricted-use site release conditions after decommissioning the Shippingport Atomic Power Station.

Kennedy, W.E. Jr.; Napier, B.A.; Soldat, J.K.

1983-09-01T23:59:59.000Z

409

The Rocky Flats Plant Waste Stream and Residue Identification and Characterization Program (WSRIC): Progress and achievements  

SciTech Connect (OSTI)

The Waste Stream and Residue Identification and Characterization (WSRIC) Program, as described in the WSRIC Program Description delineates the process knowledge used to identify and characterize currently-generated waste from approximately 5404 waste streams originating from 576 processes in 288 buildings at Rocky Flats Plant (RFP). Annual updates to the WSRIC documents are required by the Federal Facilities Compliance Agreement between the US Department of Energy, the Colorado Department of Health and the Environmental Protection Agency. Accurate determination and characterization of waste is a crucial component in RFP`s waste management strategy to assure compliance with Resource Conservation and Recovery Act (RCRA) storage and treatment requirements, as well as disposal acceptance criteria. The WSRIC Program was rebaselined in September 1992, and serves as the linchpin for documenting process knowledge in RFP`s RCRA operating record. Enhancements to the WSRIC include strengthening the waste characterization rationale, expanding WSRIC training for waste generators, and incorporating analytical information into the WSRIC building books. These enhancements will improve credibility with the regulators and increase waste generators` understanding of the basis for credible waste characterizations.

Ideker, V.L. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant; Doyle, G.M. [USDOE Rocky Flats Office, Golden, CO (United States)

1994-02-01T23:59:59.000Z

410

Involvement of ATP synthase residues aArg-376, bArg-182, and bLys-155 in Pi binding  

E-Print Network [OSTI]

Involvement of ATP synthase residues aArg-376, bArg-182, and bLys-155 in Pi binding Zulfiqar AhmadArg-182 are catalytically important ATP synthase residues that were proposed to be in- volved in substrate Pi binding and subsequent steps of ATP syn- thesis [Senior, A.E., Nadanaciva, S. and Weber, J. (2002

Zulfiqar Ahmad

411

arXiv:1011.4739v2[math.GR]16Dec2010 APPROXIMATING THE FIRST L2-BETTI NUMBER OF RESIDUALLY  

E-Print Network [OSTI]

arXiv:1011.4739v2[math.GR]16Dec2010 APPROXIMATING THE FIRST L2-BETTI NUMBER OF RESIDUALLY FINITE GROUPS W. L¨UCK, D. OSIN Abstract. We show that the first L2 -betti number of a finitely generated residually finite group can be estimated from below by using ordinary first betti numbers of finite index

Lück, Wolfgang

412

HST Residue Analysis Data 5/21/99 13:27 MADWEB Home EurecaData HST Data M&D Links Help  

E-Print Network [OSTI]

of abbreviations 1. HST Hubble Space Telescope SA Solar Array 2. SPA Solar Panel Assembly 3. EPMA Electron Probe-made debris or micrometeoroides, ESTEC decided to disassemble two of the ten solar panel assemblies ANALYSIS Data MLI Solar Cell Other Surfaces Residue Analysis Residue Analysis Reports Report

413

A critical review of developments in the pyrolysis of automotive shredder residue  

Science Journals Connector (OSTI)

Worldwide, automotive shredder residue (ASR) is considered an increasingly problematic mixture of materials that needs the development of a processing solution. Pyrolysis is a process that has many advantages to offer, but despite many studies and developments in recent years at various levels of commercialisation, it is still generally considered unproven for this purpose. This paper critically considers developmental work published in the field, presents new results, and suggests that a major reason for the lack of development is the complexity of the landscape created by strong, competing, economic, legislative, environmental and commercial drivers, which in turn make it unclear which products and processes are optimal. This is made doubly complex by the natural variation in the material composition of ASR, with contaminants that can critically affect its potential fate to anywhere in the range from hazardous waste, to energy source, to useful raw material for major cement or steel industries. New data on critical factors such as levels of chlorine and metals in raw and pyrolysed ASR are presented, alongside a much-needed summary of previously published values from references that are often difficult to source. The summaries emphasise the variation in the material, but also indicate rough boundaries for values, which are needed for the design of any potentially successful process. It is suggested that the heterogeneity seen across ASR types implies that specialised processing of SR on its own is unlikely. It is pointed out that small-scale processes that could be suitable for local requirements should be considered for development as they could be able to optimise a process sufficiently to make it viable, e.g. specialised local waste streams of paper pulp and a particular fraction of SR.

Marie K. Harder; Osric Tening Forton

2007-01-01T23:59:59.000Z

414

Differential Function of Lip Residues in the Mechanism and Biology of an Anthrax Hemophore  

SciTech Connect (OSTI)

To replicate in mammalian hosts, bacterial pathogens must acquire iron. The majority of iron is coordinated to the protoporphyrin ring of heme, which is further bound to hemoglobin. Pathogenic bacteria utilize secreted hemophores to acquire heme from heme sources such as hemoglobin. Bacillus anthracis, the causative agent of anthrax disease, secretes two hemophores, IsdX1 and IsdX2, to acquire heme from host hemoglobin and enhance bacterial replication in iron-starved environments. Both proteins contain NEAr-iron Transporter (NEAT) domains, a conserved protein module that functions in heme acquisition in Gram-positive pathogens. Here, we report the structure of IsdX1, the first of a Gram-positive hemophore, with and without bound heme. Overall, IsdX1 forms an immunoglobin-like fold that contains, similar to other NEAT proteins, a 3{sub 10}-helix near the heme-binding site. Because the mechanistic function of this helix in NEAT proteins is not yet defined, we focused on the contribution of this region to hemophore and NEAT protein activity, both biochemically and biologically in cultured cells. Site-directed mutagenesis of amino acids in and adjacent to the helix identified residues important for heme and hemoglobin association, with some mutations affecting both properties and other mutations affecting only heme stabilization. IsdX1 with mutations that reduced the ability to associate with hemoglobin and bind heme failed to restore the growth of a hemophore-deficient strain of B. anthracis on hemoglobin as the sole iron source. These data indicate that not only is the 3{sub 10}-helix important for NEAT protein biology, but also that the processes of hemoglobin and heme binding can be both separate as well as coupled, the latter function being necessary for maximal heme-scavenging activity. These studies enhance our understanding of NEAT domain and hemophore function and set the stage for structure-based inhibitor design to block NEAT domain interaction with upstream ligands.

Ekworomadu, MarCia T.; Poor, Catherine B.; Owens, Cedric P.; Balderas, Miriam A.; Fabian, Marian; Olson, John S.; Murphy, Frank; Balkabasi, Erol; Honsa, Erin S.; He, Chuan; Goulding, Celia W.; Maresso, Anthony W. (Baylor); (UCI); (Cornell); (Rice); (UC)

2014-10-02T23:59:59.000Z

415

Redox-active tyrosine residue in the microcin J25 molecule  

SciTech Connect (OSTI)

Research highlights: {yields} Cyclic voltammetry measurements showed irreversible oxidation of MccJ25 and MccJ25 (Y9F). {yields} Infrared spectroscopy studies showed that only Tyr9 could be deprotonated upon chemical oxidation. {yields} Formation of a long-lived tyrosyl radical in the native MccJ25 oxidized by H{sub 2}O{sub 2} was demonstrated. {yields} Tyr9 but not Tyr20 can be easily oxidized and form a tyrosyl radical. -- Abstract: Microcin J25 (MccJ25) is a 21 amino acid lasso-peptide antibiotic produced by Escherichia coli and composed of an 8-residues ring and a terminal 'tail' passing through the ring. We have previously reported two cellular targets for this antibiotic, bacterial RNA polymerase and the membrane respiratory chain, and shown that Tyr9 is essential for the effect on the membrane respiratory chain which leads to superoxide overproduction. In the present paper we investigated the redox behavior of MccJ25 and the mutant MccJ25 (Y9F). Cyclic voltammetry measurements showed irreversible oxidation of both Tyr9 and Tyr20 in MccJ25, but infrared spectroscopy studies demonstrated that only Tyr9 could be deprotonated upon chemical oxidation in solution. Formation of a long-lived tyrosyl radical in the native MccJ25 oxidized by H{sub 2}O{sub 2} was demonstrated by Electron Paramagnetic Resonance Spectroscopy; this radical was not detected when the reaction was carried out with the MccJ25 (Y9F) mutant. These results show that the essential Tyr9, but not Tyr20, can be easily oxidized and form a tyrosyl radical.

Chalon, Miriam C. [Departamento de Bioquimica de la Nutricion, Instituto Superior de Investigaciones Biologicas (Consejo Nacional de Investigaciones Cientificas y Tecnicas-Universidad Nacional de Tucuman) and Instituto de Quimica Biologica 'Dr Bernabe Bloj', Chacabuco 461, 4000 San Miguel de Tucuman, Tucuman (Argentina)] [Departamento de Bioquimica de la Nutricion, Instituto Superior de Investigaciones Biologicas (Consejo Nacional de Investigaciones Cientificas y Tecnicas-Universidad Nacional de Tucuman) and Instituto de Quimica Biologica 'Dr Bernabe Bloj', Chacabuco 461, 4000 San Miguel de Tucuman, Tucuman (Argentina); Wilke, Natalia [CIQUIBIC, Dpto. de Quimica Biologica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba, Pabellon Argentina, Ciudad Universitaria, X5000HUA, Cordoba (Argentina)] [CIQUIBIC, Dpto. de Quimica Biologica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba, Pabellon Argentina, Ciudad Universitaria, X5000HUA, Cordoba (Argentina); Pedersen, Jens; Rufini, Stefano [Department of Biology, University of Rome Tor Vergata 00133, Rome (Italy)] [Department of Biology, University of Rome Tor Vergata 00133, Rome (Italy); Morero, Roberto D.; Cortez, Leonardo; Chehin, Rosana N.; Farias, Ricardo N. [Departamento de Bioquimica de la Nutricion, Instituto Superior de Investigaciones Biologicas (Consejo Nacional de Investigaciones Cientificas y Tecnicas-Universidad Nacional de Tucuman) and Instituto de Quimica Biologica 'Dr Bernabe Bloj', Chacabuco 461, 4000 San Miguel de Tucuman, Tucuman (Argentina)] [Departamento de Bioquimica de la Nutricion, Instituto Superior de Investigaciones Biologicas (Consejo Nacional de Investigaciones Cientificas y Tecnicas-Universidad Nacional de Tucuman) and Instituto de Quimica Biologica 'Dr Bernabe Bloj', Chacabuco 461, 4000 San Miguel de Tucuman, Tucuman (Argentina); Vincent, Paula A., E-mail: pvincent@fbqf.unt.edu.ar [Departamento de Bioquimica de la Nutricion, Instituto Superior de Investigaciones Biologicas (Consejo Nacional de Investigaciones Cientificas y Tecnicas-Universidad Nacional de Tucuman) and Instituto de Quimica Biologica 'Dr Bernabe Bloj', Chacabuco 461, 4000 San Miguel de Tucuman, Tucuman (Argentina)

2011-03-18T23:59:59.000Z

416

Spectral Modeling of Residual Stress and Stored Elastic Strain Energy in Thermal Barrier Coatings  

SciTech Connect (OSTI)

Solutions to the thermoelastic problem are important for characterizing the response under temperature change of refractory systems. This work extends a spectral fast Fourier transform (FFT) technique to analyze the thermoelastic behavior of thermal barrier coatings (TBCs), with the intent of probing the local origins of failure in TBCs. The thermoelastic FFT (teFFT) approach allows for the characterization of local thermal residual stress and strain fields, which constitute the origins of failure in TBC systems. A technique based on statistical extreme value theory known as peaks-over-threshold (POT) is developed to quantify the extreme values ("hot spots") of stored elastic strain energy (i.e., elastic energy density, or EED). The resolution dependence of the teFFT method is assessed through a sensitivity study of the extreme values in EED. The sensitivity study is performed both for the local (point-by-point) #12;eld distributions as well as the grain scale #12;eld distributions. A convergence behavior to a particular distribution shape is demonstrated for the local #12;elds. The grain scale fields are shown to exhibit a possible convergence to a maximum level of EED. To apply the teFFT method to TBC systems, 3D synthetic microstructures are created to approximate actual TBC microstructures. The morphology of the grains in each constituent layer as well as the texture is controlled. A variety of TBC materials, including industry standard materials and potential future materials, are analyzed using the teFFT. The resulting hot spots are quantified using the POT approach. A correlation between hot spots in EED and interface rumpling between constituent layers is demonstrated, particularly for the interface between the bond coat (BC) and the thermally grown oxide (TGO) layer.

Donegan, Sean; Rolett, Anthony

2013-12-31T23:59:59.000Z

417

Jute fiber composites from coal, super clean coal, and petroleum vacuum residue-modified phenolic resin  

SciTech Connect (OSTI)

Jute fiber composites were prepared with novolac and coal, phenolated-oxidized super clean coal (POS), petroleum vacuum residue (XVR)-modified phenol-formaldehyde (novolac) resin. Five different type of resins, i.e., coal, POS, and XVR-modified resins were used by replacing (10% to 50%) with coal, POS, and XVR. The composites thus prepared have been characterized by tensile strength, hardness, thermogravimetric analysis (TGA), Fourier-transfer infrared (FT-IR), water absorption, steam absorption, and thickness swelling studies. Twenty percent POS-modified novolac composites showed almost the same tensile strength as that of pure novolac composites. After 30% POS incorporation, the tensile strength decreased to 25.84MPa from 33.96MPa in the case of pure novolac resin composites. However, after 50% POS incorporation, the percent retention of tensile strength was appreciable, i.e., 50.80% retention of tensile strength to that of pure novolac jute composites. The tensile strength of coal and XVR-rnodified composites showed a trend similar to that shown by POS-modified novolac resin composites. However, composites prepared from coal and XVR-modified resin with 50% phenol replacement showed 25.4% and 42% tensile strength retention, respectively, compared to that of pure novolac jute composites. It was found that the hardness of the modified composites slightly decreased with an increase in coal, POS, and XVR incorporation in the resin. The XVR-modified composites showed comparatively lower steam absorption than did coal or POS-modified composites. The thermal stability of the POS-modified composites was the highest among the composites studied. The detailed results obtained are being reported.

Ahmaruzzaman, M.; Sharma, D.K. [Indian Institute of Technology, New Delhi (India). Center of Energy Studies

2005-07-01T23:59:59.000Z

418

Allowable residual-contamination levels for decommissioning facilities in the 100 areas of the Hanford Site  

SciTech Connect (OSTI)

This report contains the results of a study sponsored by UNC Nuclear Industries to determine Allowable Residual Contamination Levels (ARCL) for five generic categories of facilities in the 100 Areas of the Hanford Site. The purpose of this study is to provide ARCL data useful to UNC engineers in conducting safety and cost comparisons for decommissioning alternatives. The ARCL results are based on a scenario/exposure-pathway analysis and compliance with an annual dose limit for three specific modes of future use of the land and facilities. These modes of use are restricted, controlled, and unrestricted. The information on ARCL values for restricted and controlled use provided by this report is intended to permit a full consideration of decommissioning alternatives. ARCL results are presented both for surface contamination remaining in facilities (in dpm/100 cm/sup 2/), and for unconfined surface and confined subsurface soil conditions (in pCi/g). Two confined soil conditions are considered: contamination at depths between 1 and 4 m, and contamination at depths greater than or equal to 5 m. A set of worksheets are presented in an appendix for modifying the ARCL values to accommodate changes in the radionuclide mixture or concentrations, to consider the impacts of radioactive decay, and to predict instrument responses. Finally, a comparison is made between the unrestricted release ARCL values for the 100 Area facilities and existing decommissioning and land disposal regulations. For surface contamination, the comparison shows good agreement. For soil contamination, the comparison shows good agreement if reasonable modification factors are applied to account for the differences in modeling soil contamination and licensed low-level waste.

Kennedy, W.E. Jr.; Napier, B.A.

1983-07-01T23:59:59.000Z

419

An observational study of the potential for human exposures to pet-borne diazinon residues following lawn applications  

SciTech Connect (OSTI)

This study examined the potential for pet dogs to be an important pathway for transporting diazinon residues into homes and onto its occupants following residential lawn applications. The primary objectives were to investigate the potential exposures of occupants and their pet dogs to diazinon after an application to turf at their residences and to determine if personal contacts between occupants and their pet dogs resulted in measurable exposures. It was conducted from April to August 2001 before the Agency phased out all residential uses of diazinon in December 2004. Six families and their pet dogs were recruited into the study. Monitoring was conducted at pre-, 1, 2, 4, and 8 days post-application of a commercial, granular formulation of diazinon to the lawn by the homeowner. Environmental samples collected included soil, indoor air, carpet dust, and transferable residues from lawns and floors. Samples collected from the pet dogs consisted of paw wipes, fur clippings, and transferable residues from the fur by a technician or child wearing a cotton glove(s). First morning void (FMV) urine samples were collected from each child and his/her parent on each sampling day. Diazinon was analyzed in all samples, except urine, by GC-MS. The metabolite 2-isopropyl-4-methyl-6-hydroxypyrimidine (IMPy) was analyzed in the urine samples by HPLC-MS/MS. Mean airborne residues of diazinon on day 1 post-application were at least six times higher in both the living rooms (235{+-}267 ng/m{sup 3}) and children's bedrooms (179{+-}246 ng/m{sup 3}) than at pre-application. Mean loadings of diazinon in carpet dust samples were at least 20 times greater on days 2, 4, and 8 post-application than mean loadings (0.03{+-}0.04 ng/cm{sup 2}) at pre-application. The pet dogs had over 900 times higher mean loadings of diazinon residues on their paws on day 1 post-application (88.1{+-}100.1 ng/cm{sup 2}) compared to mean loadings (<0.09 ng/cm{sup 2}) at pre-application. The mean diazinon loadings on the fur clippings were at least 14 times higher on days 1, 2, 4, and 8 post-application than mean loadings (0.8{+-}0.4 ng/cm{sup 2}) at pre-application. For transferable residues from dog fur, the mean loadings of diazinon on the technician's cotton glove samples were the lowest before application (0.04{+-}0.08 ng/cm{sup 2}) and the highest on day 1 post-application (10.4{+-}23.9 ng/cm{sup 2}) of diazinon to turf. Urinary IMPy concentrations for the participants ranged from <0.3 to 5.5 ng/mL before application and <0.3-12.5 ng/mL after application of diazinon. The mean urinary IMPy concentrations for children or adults were not statistically different (p>0.05) at pre-application compared to post-application of diazinon to turf. The results showed that the participants and their pet dogs were likely exposed to low levels of diazinon residues from several sources (i.e., air, dust, and soil), through several pathways and routes, after lawn applications at these residences. Lastly, the pet dog appears to be an important pathway for the transfer and translocation of diazinon residues inside the homes and likely exposed occupants through personal contacts (i.e., petting)

Morgan, Marsha K. [USEPA, National Exposure Research Laboratory, Research Triangle Park, NC 27709 (United States)], E-mail: morgan.marsha@epa.gov; Stout, Daniel M.; Jones, Paul A. [USEPA, National Exposure Research Laboratory, Research Triangle Park, NC 27709 (United States); Barr, Dana B. [National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA (United States)

2008-07-15T23:59:59.000Z

420

Recycling of Flue Gas Desulfurization residues in gneiss based hot mix asphalt: Materials characterization and performances evaluation  

Science Journals Connector (OSTI)

Abstract On the one hand, huge amount of Flue Gas Desulfurization (FGD) residues, produced during scrubbing flue gas, is discarded as solid waste. Such solid waste would cause serious environmental problems. One the other hand, high quality aggregates, such as limestone and basalt, are running out due to the rapid development of highway construction. Ungraded aggregates such as gneiss are therefore considered in China to replace the high quality aggregates. The application of FGD residues as a filler in gneiss based asphalt mixture has benefits both in environmental and economic sides. The main objective of this research was to visualize the raw materials characterization and evaluate the effect of FGD residues on the performance of gneiss based asphalt mixture. X-ray diffraction (XRD), X-ray fluorescence (XRF), Scanning Electron Microscope (SEM), Differential Scanning Calorimetric & Thermal gravimetric (DSC–TG) were used to investigate the features of raw materials. The performance of gneiss based asphalt mixture including high-temperature deformation resistance, low-temperature crack resistance and moisture-induced damage resistance were evaluated. Dynamic creep test, three-point bending test, Retained Marshall Stability (RMS), Tensile Strength Ratio (TSR), Indirect Tensile (IDT) strength and Resilient Modulus (MR) test were conducted and analyzed. Dissipated Creep Strain Energy to fracture (DCSEf) ratio, fracture energy and model analysis were also used to evaluate moisture resistance, crack resistance and deformation resistance of asphalt mixture respectively. Research results indicate that FGD residues can partly improve the moisture resistance and crack resistance of gneiss asphalt mixture, while it might worse the high-temperature deformation resistance.

Zongwu Chen; Shaopeng Wu; Fuzhou Li; Juyong Chen; Zhehuan Qin; Ling Pang

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Mechanistic Examination of C?–C? Bond Cleavages of Tryptophan Residues during Dissociations of Molecular Peptide Radical Cations  

SciTech Connect (OSTI)

In this study, we used collision-induced dissociation (CID) to examine the gas-phase fragmentations of [GnW]•+ (n = 2-4) and [GXW]•+ (X = C, S, L, F, Y, Q) species. The C?–C? bond cleavage of a C-terminal decarboxylated tryptophan residue ([M - CO2]•+) can generate [M - CO2 - 116]+, [M - CO2 - 117]•+, and [1H-indole]•+ (m/z 117) species as possible product ions. Competition between the formation of [M - CO2 - 116]+ and [1H-indole]•+ systems implies the existence of a proton-bound dimer formed between the indole ring and peptide backbone. Formation of such a proton-bound dimer is facile via a protonation of the tryptophan ?-carbon atom as suggested by density functional theory (DFT) calculations. DFT calculations also suggested the initially formed ion 2--the decarboxylated species that is active against C?–C? bond cleavage -can efficiently isomerize to form a more-stable -radical isomer (ion 9) as supported by Rice-Ramsperger-Kassel-Marcus (RRKM) modeling. The C?–C? bond cleavage of a tryptophan residue also can occur directly from peptide radical cations containing a basic residue. CID of [WGnR]•+ (n = 1-3) radical cations consistently resulted in predominant formation of [M-116]+ product ions. It appears that the basic arginine residue tightly sequesters the proton and allows the charge-remote C?–C? bond cleavage to prevail over the charge-directed one. DFT calculations predicted the barrier for the former is 6.2 kcal mol -1 lower than that of the latter. Furthermore, the pathway involving a salt-bridge intermediate also was accessible during such a bond cleavage event.

Song, Tao; Ma, Ching-Yung; Chu, Ivan K.; Siu, Chi-Kit; Laskin, Julia

2013-02-14T23:59:59.000Z

422

E-Print Network 3.0 - agricultural crop residues Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

that crop rotation makes intuitive sense and it works... will be necessary to minimize wind and water erosion. Crop ... Source: Brummer, E. Charles - Department of Crop and Soil...

423

Radioactive residues associated with water treatment, use and disposal in Australia.  

E-Print Network [OSTI]

??Water resources are known to contain radioactive materials, either from natural or anthropogenic sources. Treatment, including wastewater treatment, of water for drinking, domestic, agricultural and… (more)

Kleinschmidt, Ross Ivan

2011-01-01T23:59:59.000Z

424

On the Feasibility of Eddy Current Characterization of the Near-Surface Residual Stress Distribution in Nickel-Base Superalloys  

SciTech Connect (OSTI)

In light of its frequency-dependent penetration depth, the measurement of eddy current conductivity has been suggested as a possible means to allow the nondestructive evaluation of subsurface residual stresses in shot-peened specimens. This technique is based on the so-called electroelastic effect, i.e., the stress-dependence of the electrical conductivity. Unfortunately, the relatively small ({approx}1%) change in electrical conductivity caused by the presence of compressive residual stresses is often distorted, or even completely overshadowed, by the accompanying conductivity loss caused by cold work and surface roughness effects. Recently, it was observed that, in contrast with most other materials, shot-peened Waspaloy and IN100 specimens exhibit an apparent increase in electrical conductivity at increasing inspection frequencies. This observation by itself indicates that in these materials the measured conductivity change is probably dominated by residual stress effects, since both surface roughness and increased dislocation density are known to decrease rather than increase the conductivity and the presence of crystallographic texture does not affect the electrical conductivity of these materials, which crystallize in cubic symmetry. Our preliminary experiments indicate that probably there exists a unique 'window of opportunity' for eddy current NDE in nickel-base superalloys. We identified five major effects that contribute to this fortunate constellation of material properties, which will be reviewed in this presentation.

Blodgett, Mark P. [Metals, Ceramics, and NDE Division, AFRL, Wright-Patterson Air Force Base, Dayton, Ohio 45433-7817 (United States); Nagy, Peter B. [Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221-0070 (United States)

2004-02-26T23:59:59.000Z

425

Derivation of residual radioactive material guidelines for uranium in soil at the Middlesex Sampling Plant Site, Middlesex, New Jersey  

SciTech Connect (OSTI)

Residual radioactive material guidelines for uranium in soil were derived for the Middlesex Sampling Plant (MSP) site in Middlesex, New Jersey. This site has been designated for remedial action under the Formerly Utilized Sites Remedial Action Program (FUSRAP) of the US Department of Energy. The site became contaminated from operations conducted in support of the Manhattan Engineer District (MED) and the Atomic Energy Commission (AEC) between 1943 and 1967. Activities conducted at the site included sampling, storage, and shipment of uranium, thorium, and beryllium ores and residues. Uranium guidelines for single radioisotopes and total uranium were derived on the basis of the requirement that the 50-year committed effective dose equivalent to a hypothetical individual living or working in the immediate vicinity of the MSP site should not exceed a dose of 30 mrem/yr following remedial action for the current-use and likely future-use scenarios or a dose of 100 mrem/yr for less likely future-use scenarios. The RESRAD computer code, which implements the methodology described in the DOE manual for establishing residual radioactive material guidelines, was used in this evaluation. Four scenarios were considered for the site. These scenarios vary regarding future land use at the site, sources of water used, and sources of food consumed.

Dunning, D.E. [Argonne National Lab., IL (United States). Environmental Assessment Div.

1995-02-01T23:59:59.000Z

426

Significance of changes in residual stresses and mechanical properties due to SMAW repair of girth welds in linepipe  

SciTech Connect (OSTI)

This program assessed the effects of SMAW repair welding on changes in surface residual stress distribution, fracture toughness and hardness around girth weld joints in linepipe. The following types of repair welds were studied: a part wall repair, a multiple part wall repair and full wall repair. The results were compared with a non-repaired weld sample. It was found that for the weld samples studied in this program, the full wall repair produced the most severe residual stress distribution followed by the multiple and single part wall repairs. The single repair only slightly increased the residual stress distribution when compared to the as-welded condition. Dramatic reductions in toughness were found in the multiple and full repairs due to coarse-grained regions produced during the repair operations. The single part wall repair exhibited an increase in toughness as a result of the addition of a cosmetic capping pass which resulted in greater grain refinement. This suggests that repair procedures utilizing a stringer or temper bead technique may reduce the effect of weld repairs on toughness.

McGaughy, T.; Boyles, L.

1990-10-31T23:59:59.000Z

427

Environmental assessment, finding of no significant impact, and response to comments. Sold residue treatment, repackaging, and storage  

SciTech Connect (OSTI)

From its founding in 1952 through the cessation of production in 1989, the United States Department of Energy`s (DOE) Rocky Flats Plant (now the Rocky Flats Environmental Technology Site [the Site]) produced components for nuclear weapons. Some of those components were made of plutonium. As a result of the processes used to recover and purify plutonium and manufacture the components, a variety of materials became contaminated with plutonium. If the level of contamination were low, the material was considered waste. However, if the concentration of plutonium in the material exceeded the {open_quotes}economic discard limit,{close_quotes} the materials were classified as {open_quotes}residue{close_quotes} rather than{open_quotes}Waste{close_quotes} and were stored for later recovery of the plutonium. While large quantities of residues were processed, others, primarily those more difficult to process, accumulated at the Site in storage. Two important events regarding residues have occurred at the Site since production activities ceased. One event was the end of the Cold War in 1991, which made the return to production of nuclear weapons, with their Rocky Flats-made components, unnecessary. This event led to DOE`s decision to permanently cease production at the Site, clean up and remove radioactive and chemical contamination at the Site, and find alternative uses for the Site. This document describes methods for processing of the wastes for safe interim storage. Environmental impacts from the processing and storage are discussed.

NONE

1996-04-01T23:59:59.000Z

428

Effect of substrate temperature on crystal orientation and residual stress in radio frequency sputtered gallium–nitride films  

Science Journals Connector (OSTI)

The crystal orientation and residual stress in gallium nitride(GaN)filmsdeposited on a single-crystal (0001) sapphire substrate using a sputtering system are examined through x-ray diffraction measurements as part of a study of low-temperaturesputtering techniques for GaN. The rf sputtering system has an isolated deposition chamber to prevent contamination with impurities and is expected to produce high-purity nitride films.GaNfilms are deposited at various substrate temperatures and constant gas pressure and input power. This system is found to produce GaNfilms with good crystal orientation with the c axes of GaN crystals oriented normal to the substrate surface. The crystal size of filmsdeposited at high temperature is larger than that deposited at low T s . All films except that deposited at 973 K exhibit compressive residual stress and this residual stress is found to decrease with increasing temperature. Finally the filmdeposited at 973 K was tinged with white and the surface contained numerous microcracks.

Kazuya Kusaka; Takao Hanabusa; Kikuo Tominaga; Noriyoshi Yamauchi

2004-01-01T23:59:59.000Z

429

Accurate and direct quantification of native brucite in serpentine ores—New methodology and implications for CO2 sequestration by mining residues  

Science Journals Connector (OSTI)

Abstract An original method was developed to accurately quantify brucite content in mining residues whereby the thermal decomposition of pure brucite, olivine, serpentine and mining residues was comprehensively studied. The simultaneous dehydroxylation of brucite and various serpentine minerals was investigated using a combination of isothermal and nonisothermal thermogravimetric analyses with mass spectrometry. The dehydroxylation rate of brucite was highly influenced by its particle size distribution. However, the technique proposed here revealed similar particle size distributions of native brucite irrespective of the analyzed mining residue samples. This suggests the technique could also be extended to coarse mining residue particle samples containing invariant brucite size distributions. Native brucite dehydroxylation was shown to start at lower temperatures than serpentines. The weight loss due to dehydroxylation registered for brucite-doped olivine and residues revealed a quasi-linear correlation with brucite content (R2 = 1) and provided a reliable and straightforward approach for the quantification of free brucite in single minerals as well as in mining residues. The accuracy was higher than most of the current techniques used for brucite quantification. The uncertainties were as low as ?0.05 wt% for mining residues and ?0.02 wt% for single minerals rendering this method a promising tool for native brucite quantification.

Gnouyaro P. Assima; Faïçal Larachi; John Molson; Georges Beaudoin

2013-01-01T23:59:59.000Z

430

Nuclear magnetic resonance solution structure of hirudin(1–51) and comparison with corresponding three-dimensional structures determined using the complete 65-residue hirudin polypeptide chain  

Science Journals Connector (OSTI)

The three-dimensional structure of the N-terminal 51-residue domain of recombinant hirudin in aqueous solution was determined by 1H nuclear magnetic resonance (NMR) spectroscopy, and the resulting high-quality solution structure was compared with corresponding structures obtained from studies with the intact, 65-residue polypeptide chain of hirudin. On the basis of 580 distance constraints derived from nuclear Overhauser effects and 109 dihedral angle constraints, a group of 20 conformers representing the solution structure of hirudin(1–51) was computed with the program DIANA and energyminimized with a modified version of the program AMBER. Residues 3 to 30 and 37 to 48 form a well-defined molecular core with two antiparallel ?-sheets composed of residues 14 to 16 and 20 to 22, and 27 to 31 and 36 to 40, and three reverse turns at residues 8 to 11 (type II), 17 to 20 (type II?) and 23 to 26 (type II). The average root-mean-square deviation of the individual NMR conformers relative to their mean co-ordinates is 0.38 Å for the backbone atoms and 0.77 Å for all heavy atoms of these residues. Increased structural disorder was found for the N-terminal dipeptide segment, the loop at residues 31 to 36, and the C-terminal tripeptide segment. The solution structure of hirudin(1–51) has the same molecular architecture as the corresponding polypeptide segment in natural hirudin and recombinant desulfatohirudin. It is also closely similar to the crystal structure of the N-terminal 51-residue segment of hirudin in a hirudin-thrombin complex, with root-mean-square deviations of the crystal structure relative to the mean solution structure of 0.61 Å for the backbone atoms and 0.91 Å for all heavy atoms of residues 3 to 30 and 37 to 48. Further coincidence is found for the loop formed by residues 31 to 36, which shows increased structural disorder in all available solution structures of hirudin, and of which residues 32 to 35 are not observable in the electron density map of the thrombin complex. Significant local structural differences between hirudin(1–51) in solution and hirudin in the crystalline thrombin complex were identified mainly for the N-terminal tripeptide segment and residues 17 to 21. These are further analyzed in an accompanying paper.

T. Szyperski; P. Güntert; S.R. Stone; K. Wüthrich

1992-01-01T23:59:59.000Z

431

Environmental impact of APC residues from municipal solid waste incineration: Reuse assessment based on soil and surface water protection criteria  

SciTech Connect (OSTI)

Highlights: > The Dutch Building Material Decree (BMD) was used to APC residues from MSWI. > BMD is a straightforward tool to calculate expectable loads to the environment of common pollutants. > Chloride load to the environment lead to classification of building material not allowed. > At least a pre-treatment (e.g. washing) is required in order to remove soluble salts. > The stabilization with phosphates or silicates eliminate the problem of heavy metals. - Abstract: Waste management and environmental protection are mandatory requirements of modern society. In our study, air pollution control (APC) residues from municipal solid waste incinerators (MSWI) were considered as a mixture of fly ash and fine particulate solids collected in scrubbers and fabric filters. These are hazardous wastes and require treatment before landfill. Although there are a number of treatment options, it is highly recommended to find practical applications rather than just dump them in landfill sites. In general, for using a construction material, beyond technical specifications also soil and surface water criteria may be used to ensure environmental protection. The Dutch Building Materials Decree (BMD) is a valuable tool in this respect and it was used to investigate which properties do not meet the threshold criteria so that APC residues can be further used as secondary building material. To this end, some scenarios were evaluated by considering release of inorganic species from unmoulded and moulded applications. The main conclusion is that the high amount of soluble salts makes the APC residues a building material prohibited in any of the conditions tested. In case of moulding materials, the limits of heavy metals are complied, and their use in Category 1 would be allowed. However, also in this case, the soluble salts lead to the classification of 'building material not allowed'. The treatments with phosphates or silicates are able to solve the problem of heavy metals, but difficulties with the soluble salts are still observed. This analysis suggests that for APC residues to comply with soil and surface water protection criteria to be further used as building material at least a pre-treating for removing soluble salts is absolutely required.

Quina, Margarida J., E-mail: guida@eq.uc.pt [Research Centre on Chemical Processes Engineering and Forest Products, Department of Chemical Engineering, University of Coimbra, Rua Silvio Lima, 3030-790 Coimbra (Portugal); Bordado, Joao C.M. [Department of Chemical and Biological Engineering, IBB, Instituto Superior Tecnico, Av. Rovisco Pais, 1049-001 Lisboa (Portugal); Quinta-Ferreira, Rosa M. [Research Centre on Chemical Processes Engineering and Forest Products, Department of Chemical Engineering, University of Coimbra, Rua Silvio Lima, 3030-790 Coimbra (Portugal)

2011-09-15T23:59:59.000Z

432

Analysis of macroscopic gunshot residues by Raman spectroscopy to assess the weapon memory effect  

Science Journals Connector (OSTI)

Abstract Gunshot residues (GSR) are valuable evidence which provide the forensic analyst with useful information about a crime scene when proper analytical methods are used. Nowadays, the method of choice for analyzing GSR is scanning electron microscopy coupled with energy dispersive X-ray analysis (SEM/EDX). However, SEM/EDX presents limitations when the GSR identification of “non-toxic” ammunition types is performed. To overcome this drawback, Raman spectroscopy has been recently proposed as a complementary technique to SEM/EDX. However, for the time being, it can only be used in a limited number of casework (e.g. examining the macroscopic GSR produced at short distance over victim's clothes) and further research to know when this technique could support SEM–EDX results is required. In the present work, the memory effect of the weapon, which plays an important role to link the GSR found and the ammunition fired, is studied. Twenty shots were fired at close distance (?30 cm) at paper targets using the same weapon with two different types of ammunition. The first, third, ninth, and twentieth shots were fired with the first ammunition and the shots among them using the second ammunition. The macroscopic GSR produced by the first ammunition were analyzed using Raman spectroscopy. First, the spectra obtained were visually differentiated by taking into account the band at about 1342 cm?1. This first approach shown that in the first shot were no GSR particles from the second ammunition, but 1.5–7.5% of analyzed particles corresponded to the second ammunition in the third, ninth, and twentieth shots. Additionally, the same differentiation was then performed by discriminant analysis using the spectral range from 1800 to 800 cm?1. Although using this second approach only one GSR was identified as the second ammunition, was remarkable that after the shots with different ammunition the GSR obtained shows greater variability. The results obtained suggest that the memory effect of the weapon has not a significant influence when the organic analysis of macroscopic GSR on targets by Raman spectroscopy is performed.

María López-López; Juan Jose Delgado; Carmen García-Ruiz

2013-01-01T23:59:59.000Z

433

Strategies for the enhancement of automobile shredder residues (ASRs) recycling: Results and cost assessment  

Science Journals Connector (OSTI)

Abstract With reference to the European regulation about the management of End-of-Life Vehicles (ELVs), Directive 2000/53/EC imposes the achievement of a recycling target of 85%, and 95% of total recovery by 2015. Over the last few years many efforts have been made to find solutions to properly manage the waste coming from \\{ELVs\\} with the aim of complying with the targets fixed by the Directive. This paper focuses on the economical evaluation of a treatment process, that includes physical (size and density), magnetic and electrical separations, performed on the light fraction of the automobile shredder residue (ASR) with the aim of reducing the amount of waste to dispose of in a landfill and enhancing the recovery of valuable fractions as stated by the EU Directive. The afore mentioned process is able to enhance the recovery of ferrous and non-ferrous metals of an amount equal to about 1% b.w. (by weight) of the ELV weight, and to separate a high energetic-content product suitable for thermal valorization for an amount close to (but not higher than) 10% b.w. of the ELV weight. The results of the economical assessment led to annual operating costs of the treatment ranging from 300,000 €/y to 350,000 €/y. Since the considered plant treats about 13,500 metric tons of ASR per year, this would correspond to an operating cost of approximately 20–25 €/t. Taking into account the amount and the selling price of the scrap iron and of the non magnetic metal recovered by the process, thus leading to a gain of about 30 €/t per ton of light ASR treated, the cost of the recovery process is balanced by the profit from the selling of the recovered metals. On the other hand, the proposed treatment is able to achieve the fulfillment of the targets stated by Directive 2000/53/EC concerning thermal valorization and reduce the amount of waste generated from ELV shredding to landfill.

Barbara Ruffino; Silvia Fiore; Maria Chiara Zanetti

2014-01-01T23:59:59.000Z

434

Computation Of The Residual Radionuclide Activity Within Three Natural Waterways At The Savannah River Site  

SciTech Connect (OSTI)

In 2010 a Composite Analysis (CA) of the U.S. Department of Energy’s (DOE’s) Savannah River Site (SRS) was completed. This investigation evaluated the dose impact of the anticipated SRS End State residual sources of radionuclides to offsite members of the public. Doses were assessed at the locations where SRS site streams discharge into the Savannah River at the perimeter of the SRS. Although the model developed to perform this computation indicated that the dose constraint of 0.3 mSv/yr (30 mrem/yr), associated with CA, was not approached at the Points of Assessment (POAs), a significant contribution to the total computed dose was derived from the radionuclides (primarily Cs-137) bound-up in the soil and sediment of the drainage corridors of several SRS streams. DOE’s Low Level Waste Federal Review Group (LFRG) reviewed the 2010 CA and identified several items to be addressed in the SRS Maintenance Program. One of the items recognized Cs-137 in the Lower Three Runs (LTR) Integrator Operable Unit (IOU), as a significant CA dose driver. The item made the recommendation that SRS update the estimated radionuclide inventory, including Cs-137, in the LTR IOU. That initial work has been completed and its radionuclide inventory refined. There are five additional streams at SRS and the next phase of the response to the LFRG concern was to obtain a more accurate inventory and distribution of radionuclides in three of those streams, Fourmile Branch (FMB), Pen Branch (PB) and Steel Creek (SC). Each of these streams is designated as an IOU, which are defined for the purpose of this investigation as the surface water bodies and associated wetlands, including the channel sediment, floodplain sed/soil, and related biota. If present, radionuclides associated with IOUs are adsorbed to the streambed sediment and soils of the shallow floodplains that lie immediately adjacent to stream channels. The scope of this effort included the evaluation of any previous sampling and analysis data that had been collected for various SRS investigations, as well as the additional streambed and floodplain sampling and analysis data acquired more recently as part of the ongoing SRS IOU program, and associated specifically with the FMB, PB, and SC IOUs. Samples have been acquired along the waterways, within the stream channels themselves and in the adjacent floodplain zones. While Cs-137 is the most significant and abundant radionuclide associated with the SRS waterways, it is not the only radionuclide, hence work was conducted to evaluate all radionuclides present.

Hiergesell, R. A.; Phifer, M. A.

2014-01-07T23:59:59.000Z

435

Characterize and Quantify Residual Steelhead in the Clearwater River, Idaho, 1999-2000 Progress Report.  

SciTech Connect (OSTI)

During 1999-2002 we determined whether size at release and release site influenced emigration success and survival of hatchery steelhead smolts raised at Dworshak National Fish Hatchery and released into the Clearwater River drainage. We marked 4,500 smolts each year with Passive Integrated Transponder Tags (PIT-tags) which enabled us to track emigration and estimate survival through mainstem Snake and Columbia river dams. Hatchery steelhead raised in System I freshwater were significantly smaller than those raised in warmer System II re-use water (196 mm, 206 mm, 198 mm and 201 mm System I; 215 mm, 213 mm, 206 mm and 209 mm System II). However, there was no significant difference in detection rates to mainstem observation sites between the two groups (65%, 58%, 78% and 55% System I; 69%, 59%, 74% and 53% System II). Survival estimates to Lower Granite Dam were also not significant between the two groups (72%, 81%, 80% and 77% System I; 77%, 79%, 77%, and 72% System II). Smolts less than 180 mm FL were less likely to be detected than larger smolts. Hatchery steelhead smolts released into Clear Creek, the South Fork Clearwater River and the Clearwater River at Dworshak National Fish Hatchery had significantly different lengths each year, but there was no discernible pattern due to random egg takes and rearing systems. Detection rates to mainstem observation sites for smolts released into Clear Creek were significantly less than the other two groups in all years except 2002 (62%, 57%, 71%, and 57% Clear Creek; 68%, 63%, 73% and 61% South Fork Clearwater River; 70%, 59%, 78% and 55% Clearwater River). However, survival rates to Lower Granite Dam were not significantly different (73%, 65%, 78%, and 77% Clear Creek; 79%, 72%, 79% and 76% South Fork Clearwater River; 81%, 76%, 80% and 83% Clearwater River). Similar to the size at release group, smolts less than 180 mm FL were less likely to get detected than larger smolts. Smolts from both size at release and release site groups that were mature at tagging rarely migrated downstream. If smolts migrated they did it in the same year they were released, as less than 0.02% were observed migrating the second year. We sampled the Clearwater River, North Fork Clearwater River, Bedrock Creek, Big Canyon Creek, Cottonwood Creek, Jacks Creek and the Dworshak National Fish Hatchery adult ladder to collect residual hatchery steelhead. We PIT-tagged and released 3,651 hatchery steelhead and collected 645 hatchery steelhead for coded wire tags. Most residual hatchery steelhead were caught within 4 rkm of Dworshak National Fish Hatchery. Hatchery steelhead sampled in the North Fork Clearwater River and the Dworshak Hatchery adult ladder were significantly larger than those sampled in the Clearwater River and lower tributaries in all years except 2001 (205 mm, 205 mm, 223 mm and 238 mm North Fork Clearwater River; 190 mm, 182 mm, 226 mm and 189 mm Clearwater River). Of the hatchery steelhead we PIT-tagged, only 12% were observed at downstream observation sites. Most migrants were tagged in the Clearwater River (91%) and were smaller than hatchery steelhead that were tagged but were not detected. Most migrants were detected in the same year they were tagged, but 14% held over and migrated in the second year after tagging. We documented migration outside of the normal window, as one detection occurred on October 31 at Lower Granite Dam. We recaptured 130 individual hatchery steelhead that we had tagged during sampling. Over 77% of the recaptures were within one km of where they were tagged, and 67% of the recaptures were tagged in the North Fork Clearwater River and the Dworshak Hatchery adult ladder. We calculated a mean growth rate of 0.27 mm/day for fish we recaptured. For those hatchery steelhead we PIT-tagged, the proportion of males was 13%, the rest we could not ascertain gender. All the males were precocious. Over 97% of the coded-wire tag recoveries came from hatchery steelhead released at Dworshak National Fish Hatchery. The Contribution group (random egg take and rearing system) comp

Brostrom, Jody K. (US Fish and Wildlife Service, Idaho Fishery Resource Office, Ahsahka, ID)

2006-08-01T23:59:59.000Z

436

Marine residual fuel sorption and desorption kinetics by alkali treated rice husks  

Science Journals Connector (OSTI)

An oil absorbent material has been produced from waste biomass with an alkali treatment process. The simple yet effective process is carried out on the agricultural biowaste at 90 °C and ambient pressure. The pre...

Alireza Bazargan; Chi Wai Hui; Gordon Mckay

2014-06-01T23:59:59.000Z

437

Method for estimation of the average local working temperatures and the residual resource of metal coatings of gas-turbine blades  

Science Journals Connector (OSTI)

A new method is proposed for estimation of the average local operating temperatures and the residual service life (resource) of protective MCrAlY metal coatings of gas-turbine blades after a certain time of opera...

P. G. Krukovskii; K. A. Tadlya

2007-05-01T23:59:59.000Z

438

Studies on rejuvenation of spent residue hydroprocessing catalysts by leaching of foulant metals: influence of inorganic salt additives on the leaching efficiency of organic acids  

Science Journals Connector (OSTI)

A comparative study has been made on the efficiency of oxalic, malonic and acetic acids for selective removal of metal foulants (e.g. vanadium) from spent residue hydrotreating catalysts in the presence and ab...

M. Marafi; A. Stanislaus; C. J. Mumford

1993-01-01T23:59:59.000Z

439

226Ra, 232Th and 40K radionuclides enhancement rate and dose assessment for residues of lignite-fired thermal power plants in Turkey  

Science Journals Connector (OSTI)

......found in residues resulting from coal combustion in thermal power plants can widely depend on mineral ingredients of coal. Coal and ash activity concentrations...Radium 7440-29-1 Thorium | Coal Ash chemistry Environmental Exposure analysis......

A. Parmaksiz; P. Arikan; M. Vural; E. Yeltepe; I. Tükenmez

2011-11-01T23:59:59.000Z

440

RELAP5/MOD3 simulation of the loss of residual heat removal during midloop operation experiment conducted at the ROSA-IV/ Large Scale Test Facility  

E-Print Network [OSTI]

The modeling of the complex thermal hydraulics Of reactor systems involves the use Of experimental test systems as well as numerical codes. A simulation of the loss of residual heat removal (RHR) during midloop operations was performed using...

Banerjee, Sibashis Sanatkumar

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

On the role of residual Ag in nanoporous Au catalysts for CO oxidation: A combined micro-reactor and TAP reactor study  

E-Print Network [OSTI]

of Materials Physics and Technology, D-21073 Hamburg, Germany, and Helmholtz-Centre Geesthacht, Institute of Materials Mechanics, D-21502 Geesthacht, Germany Abstract The influence of residual Ag on the formation

Pfeifer, Holger

442

Three-Dimensional Imaging of the Crust and Upper Mantle in the Long Valley-Mono Craters Region, California, Using Teleseismic P-Wave Residuals  

Science Journals Connector (OSTI)

Teleseismic travel time residuals measured at 90 seismic stations centered on the Long Valley caldera in eastern California were inverted to ... resolved mid-crustal low-velocity bodies in the Long Valley region....

P. B. Dawson; H. M. Iyer; J. R. Evans

1992-01-01T23:59:59.000Z

443

Build Rocky Flats Environmental Technology site production prototype modular treatment system for stand alone core capability for residue unpack, sort, assay, repack  

SciTech Connect (OSTI)

This document describes a portable and modular suit of equipment that upfront and near-term accomplishes a sorting process that documents and removes Rocky Flats Environmental Technology Site (RFETS) residue and waste from site inventory.

Hildner, R.A.; Zygmunt, S.J.

1997-01-01T23:59:59.000Z

444

The effects of petroleum residues and the associated degrading bacteria on the development and survival of the larvae of Penaeus aztecus ives  

E-Print Network [OSTI]

THE EFFECTS OF PETROLEUM RESIDUES AND THE ASSOCIATED DEGRADING BACTERIA ON THE DEVELOPMENT AND SURVIVAL OF THE LARVAE OF PENAEUS AZTECUS IVES A Thesis by JOHN CURTIS GLARY III Submitted to the Graduate College of Texas A&M University... in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1983 Major Subject: Biology THE EFFECTS OF PETROLEUM RESIDUES AND THE ASSOCIATED DEGRADING BACTERIA ON THE DEVELOPMENT AND SURVIVAL OF THE LARVAE OF PENAEUS AZTECUS...

Clary, John Curtis

1983-01-01T23:59:59.000Z

445

Microcracks, residual strain, velocity, and elastic properties of igneous rocks from a geothermal test-hole at Fenton Hill, New Mexico  

E-Print Network [OSTI]

MICROCRACKS, RESIDUAL STRAIN, VELOCITY, AND ELASTIC PROPERTIES OF IGNEOUS ROCKS FRCM A GEOTHERMAL TEST-HOLE AT FENTON HILL, NEW MEXICO A Thesis JOHN DAVID CIAMPA Submitted to the Graduate College of Texas A8M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE August 1980 Major Subject: Geophysics MICROCRACKS, RESIDUAL STRAIN, VELOCITY, AND ELASTIC PROPERTIES OF IGNEOUS ROCKS FROM A GEOTHERMAL TEST-HOLE AT FENTON HILL, NEW MEXICO A Thesis by JOHN DAVID CIAMPA...

Ciampa, John David

2012-06-07T23:59:59.000Z

446

An atypical residue in the pore of the Varroa destructor GABA-activated RDL receptors affects picrotoxin block and thymol modulation Insect Biochemistry and Molecular Biology  

E-Print Network [OSTI]

. However there has 263 9 been some interest in the contribution of residues around the 20’ location. Residues at 264 20’ and 21’ in GABAA receptors have been shown by substituted cysteine 265 accessibility mutagenesis to be water accessible... -366. Waliwitiya, R., Belton, P., Nicholson, R.A., Lowenberger, C.A., 2010. Effects of the essential oil constituent thymol and other neuroactive chemicals on flight motor activity and wing beat frequency in the blowfly Phaenicia sericata. Pest management...

Price, Kerry; Lummis, Sarah C. R.

2014-10-18T23:59:59.000Z

447

RESIDUES FROM COAL CONVERSION AND UTILIZATION: ADVANCED MINERALOGICAL CHARACTERIZATION AND DISPOSED BYPRODUCT DIAGENESIS  

SciTech Connect (OSTI)

Prior to the initiation of this study, understanding of the long-term behavior of environmentally-exposed Coal Combustion By-Products (CCBs) was lacking in (among others) two primary areas addressed in this work. First, no method had been successfully applied to achieve full quantitative analysis of the partitioning of chemical constituents into reactive or passive crystalline or noncrystalline compounds. Rather, only semi-quantitative methods were available, with large associated errors. Second, our understanding of the long-term behavior of various CCBs in contact with the natural environment was based on a relatively limited set of study materials. This study addressed these areas with two objectives, producing (1) a set of protocols for fully quantitative phase analysis using the Rietveld Quantitative X-ray Diffraction (RQXRD) method and (2) greater understanding of the hydrologic and geochemical nature of the long-term behavior of disposed and utilized CCBs. The RQXRD technique was initially tested using (1) mixtures of National Institute of Standards and Technology (NIST) crystalline standards, and (2) mixtures of synthetic reagents simulating various CCBs, to determine accuracy and precision of the method, and to determine the most favorable protocols to follow in order to efficiently quantify multi-phase mixtures. Four sets of borehole samples of disposed or utilized CCBs were retrieved and analyzed by RQXRD according to the protocols developed under the first objective. The first set of samples, from a Class F ash settling pond in Kentucky disposed for up to 20 years, showed little mineralogical alteration, as expected. The second set of samples, from an embankment in Indiana containing a mixture of chain-grate (stoker) furnace ash and fluidized bed combustion (FBC) residues, showed formation of the mineral thaumasite, as observed in previously studied exposed FBC materials. Two high-calcium CCBs studied, including a dry-process flue gas desulfurization (FGD) by-product disposed in the Midwest, and a mixture of Class C fly ash and wet process FGD by-product codisposed in North Dakota, appeared relatively unchanged mineralogically over the up to 5 and 17 years of emplacement, respectively. Each of these two materials contained mineralogies consistent with short-term hydration products of their respective starting (dry) materials. The hydration product ettringite persisted throughout the duration of emplacement at each site, and the diagenetic ash alteration product thaumasite did not form at either site. Explanations for the absence of thaumasite in these two sites include a lack of significant carbonate, sulfate, and alkalinity sources in the case of the North Dakota site, and a lack of sulfate, alkalinity, and sufficient moisture in the Midwest site. Potential for future thaumasite formation in these materials may exist if placed in contact with cold, wet materials containing the missing components listed above. In the presence of the sulfite scrubber mineral hannebachite, the ettringites formed had crystallographic unit cell dimensions smaller than those of pure sulfate ettringite, suggesting either incorporation of sulfite ions into the ettringite structure, or incorporation of silicon and carbonate ions, forming a solid solution towards thaumasite.

Gregory J. McCarthy; Dean G. Grier

2001-01-01T23:59:59.000Z

448

Environmental impacts of residual Municipal Solid Waste incineration: A comparison of 110 French incinerators using a life cycle approach  

SciTech Connect (OSTI)

Highlights: • 110 French incinerators are compared with LCA based on plant-specific data. • Environmental impacts vary as a function of plants energy recovery and NO{sub x} emissions. • E.g. climate change impact ranges from ?58 to 408 kg CO{sub 2}-eq/tonne of residual MSW. • Implications for LCA of waste management in a decision-making process are detailed. - Abstract: Incineration is the main option for residual Municipal Solid Waste treatment in France. This study compares the environmental performances of 110 French incinerators (i.e. 85% of the total number of plants currently in activity in France) in a Life Cycle Assessment perspective, considering 5 non-toxic impact categories: climate change, photochemical oxidant formation, particulate matter formation, terrestrial acidification and marine eutrophication. Mean, median and lower/upper impact potentials are determined considering the incineration of 1 tonne of French residual Municipal Solid Waste. The results highlight the relatively large variability of the impact potentials as a function of the plant technical performances. In particular, the climate change impact potential of the incineration of 1 tonne of waste ranges from a benefit of ?58 kg CO{sub 2}-eq to a relatively large burden of 408 kg CO{sub 2}-eq, with 294 kg CO{sub 2}-eq as the average impact. Two main plant-specific parameters drive the impact potentials regarding the 5 non-toxic impact categories under study: the energy recovery and delivery rate and the NO{sub x} process-specific emissions. The variability of the impact potentials as a function of incinerator characteristics therefore calls for the use of site-specific data when required by the LCA goal and scope definition phase, in particular when the study focuses on a specific incinerator or on a local waste management plan, and when these data are available.

Beylot, Antoine, E-mail: a.beylot@brgm.fr; Villeneuve, Jacques

2013-12-15T23:59:59.000Z

449

Combined cycle power plants: A comparison between two different dynamic models to evaluate transient behaviour and residual life  

Science Journals Connector (OSTI)

Abstract The deregulated energy market and the increasing quota of electrical capacity covered by non-predictable renewable sources require strongly irregular and discontinuous operation of thermoelectric plants to satisfy users demand and compensate the variability of renewable sources. As a consequence, due to thermo-mechanical fatigue, creep and corrosion, a lifetime reduction of the most critical components occurs. The availability of a procedure able to predict the residual life of plant devices is necessary to assist the management decisions about power plants’ operation and maintenance scheduling. The first step of this procedure is the capability of simulating the plant behaviour versus time by evaluating the trends of the main thermodynamic parameters that describe the plant operation during different transient periods. In this context, the main contribution of the present paper is to propose a complete procedure able to simulate the plant dynamic behaviour and estimate the residual life reduction of some components. Indeed, two different models, developed by two different research groups, of the same single pressure heat recovery steam generator unit are presented and utilized to characterize the dynamic behaviour of the above mentioned power plant. The main thermodynamic variables during different transient operation conditions are predicted and good correspondence between the two methods is obtained. It can be also noted that, when the geometry and size of the devices are considered, the thermal inertia related to heat exchangers tubes, pipes and other physical masses causes a delay in the system response. Moreover, a residual life estimation of the most stressed component is presented.

Alberto Benato; Anna Stoppato; Stefano Bracco

2014-01-01T23:59:59.000Z

450

Leaching behavior and possible resource recovery from air pollution control residues of fluidized bed combustion of municipal solid waste  

SciTech Connect (OSTI)

Ash residues are generated at several points during combustion of municipal solid waste (MSW), i.e., in cyclones, electrostatic precipitators and fabric filters. Such residues are of a complex physical and chemical nature and are often enriched in soluble salts and heavy metals such as Pb, Cd and Zn. Fluidized bed combustion (FBC) of MSW is a relatively new technique and very little information is available about the leaching behavior of its residues. In this study, the total elemental composition, mineralogy and leaching behavior of cyclone and bag-house filter ashes from a bubbling fluidized bed (BFB) boiler fired with municipal solid waste have been investigated. In addition, the possibilities of recovery heavy metals from these ashes were studied. The long-term leaching behavior of the ash constituents was evaluated using a two-step batch leaching test known as the CEN-test, whereas short and medium term leaching behavior was evaluated using a Column test. The extraction of elements from cyclone and filter ashes with various acidic solutions was also investigated. The leaching behavior of acid washed ashes was evaluated using the CEN test. The cyclone ash was mainly composed of aluminosilicate minerals, whereas the filter ash consisted of chlorides and hydroxides of alkali and alkaline earth metals. The concentration of heavy metals such as Zn, Cu, Cd and Pb was higher in the filter ash than in the cyclone ash. The leached amounts of sulfates and Pb from the cyclone ash decreased with leaching test contact time, indicating the formation of secondary mineral phases. Large amounts of chlorides, sulfates, Ca, Cu and Pb were leached from the filter ash. Acid extraction removed large amounts ({gt}50%) of Zn, Pb and Cu from the filter ash and approximately 56% of the total amount of Zn present in the cyclone ash. An efficient removal of heavy metal species from these types of ashes can probably be achieved by application of a recycling or multi-step process.

Abbas, Z.; Andersson, B.A.; Steenari, B.M.

1999-07-01T23:59:59.000Z

451

Agricultural  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Resources News & Events Expand News & Events Skip navigation links Smart Grid Demand Response Agricultural Residential Demand Response Commercial & Industrial Demand Response...

452

Analysis of residual spectra and the monopole spectrum for 3 K blackbody radiation by means of non-extensive thermostatistics  

E-Print Network [OSTI]

We analyze residual spectra of 3 K blackbody radiation (CMB) using non-extensive thermostatistics with a parameter q-1. The limits of |q-1|<1.2x10^{-5} and the temperature fluctuation |delta T|<(1.6-4.3)x10^{-5} are smaller than those by Tsallis et al. Moreover, analyzing the monopole spectrum by a formula including the chemical potential mu, we obtain the limits |q-1|<2.3x10^{-5} and |mu|<1.6x10^{-4}. |q-1| is comparable with the Sunyaev-Zeldovich effect y.

Minoru Biyajima; Takuya Mizoguchi

2012-10-22T23:59:59.000Z

453

Effect of residual gases in high vacuum on the energy-level alignment at noble metal/organic interfaces  

SciTech Connect (OSTI)

The energy-level alignment at metal/organic interfaces has traditionally been studied using ultraviolet photoelectron spectroscopy (UPS) in ultra-high vacuum (UHV). However, since most devices are fabricated in high vacuum (HV), these studies do not accurately reflect the interfaces in real devices. We demonstrate, using UPS measurements of samples prepared in HV and UHV and current-voltage measurements of devices prepared in HV, that the small amounts of residual gases that are adsorbed on the surface of clean Cu, Ag, and Au (i.e., the noble metals) in HV can significantly alter the energy-level alignment at metal/organic interfaces.

Helander, M. G.; Wang, Z. B.; Lu, Z. H.

2011-10-31T23:59:59.000Z

454

Effect of sewage sludge content on gas quality and solid residues produced by cogasification in an updraft gasifier  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Cogasification of sewage sludge with wood pellets in updraft gasifier was analysed. Black-Right-Pointing-Pointer The effects of sewage sludge content on the gasification process were examined. Black-Right-Pointing-Pointer Sewage sludge addition up to 30 wt.% reduces moderately the process performance. Black-Right-Pointing-Pointer At high sewage sludge content slagging and clinker formation occurred. Black-Right-Pointing-Pointer Solid residues produced resulted acceptable at landfills for non-hazardous waste. - Abstract: In the present work, the gasification with air of dehydrated sewage sludge (SS) with 20 wt.% moisture mixed with conventional woody biomass was investigated using a pilot fixed-bed updraft gasifier. Attention was focused on the effect of the SS content on the gasification performance and on the environmental impact of the process. The results showed that it is possible to co-gasify SS with wood pellets (WPs) in updraft fixed-bed gasification installations. However, at high content of sewage sludge the gasification process can become instable because of the very high ash content and low ash fusion temperatures of SS. At an equivalent ratio of 0.25, compared with wood pellets gasification, the addition of sewage sludge led to a reduction of gas yield in favor of an increase of condensate production with consequent cold gas efficiency decrease. Low concentrations of dioxins/furans and PAHs were measured in the gas produced by SS gasification, well below the limiting values for the exhaust gaseous emissions. NH{sub 3}, HCl and HF contents were very low because most of these compounds were retained in the wet scrubber systems. On the other hand, high H{sub 2}S levels were measured due to high sulfur content of SS. Heavy metals supplied with the feedstocks were mostly retained in gasification solid residues. The leachability tests performed according to European regulations showed that metals leachability was within the limits for landfilling inert residues. On the other hand, sulfate and chloride releases were found to comply with the limits for non-hazardous residues.

Seggiani, Maurizia, E-mail: m.seggiani@diccism.unipi.it [Department of Chemical Engineering, Industrial Chemistry and Material Science, University of Pisa, Largo Lucio Lazzarino 1, 56126 Pisa (Italy); Puccini, Monica, E-mail: m.puccini@diccism.unipi.it [Department of Chemical Engineering, Industrial Chemistry and Material Science, University of Pisa, Largo Lucio Lazzarino 1, 56126 Pisa (Italy); Raggio, Giovanni, E-mail: g.raggio@tiscali.it [Italprogetti Engineering SPA, Lungarno Pacinotti, 59/A, 56020 San Romano (Pisa) (Italy); Vitolo, Sandra, E-mail: s.vitolo@diccism.unipi.it [Department of Chemical Engineering, Industrial Chemistry and Material Science, University of Pisa, Largo Lucio Lazzarino 1, 56126 Pisa (Italy)

2012-10-15T23:59:59.000Z

455

Toxicity of Emamectin Benzoate Foliar Dislodgeable Residues to Two Beneficial Insects  

Science Journals Connector (OSTI)

Box 450, Three Bridges, New Jersey 08887-0450; Agricultural Research and Development, Merck Research Laboratories, 7555 North Del Mar Avenue, Suite 204, Fresno, California 93711; Wildlife International Ltd., 8598 Commerce Drive, Easton, Maryland 21601; Agricultural and Veterinary Analytical Research and Development, Merck Research Laboratories, Rahway New Jersey 07065-0900; and Department of Drug Metabolism, Merck Research Laboratories, P.O. ... In addition, complete weather data including wind speed and direction, solar irradiance, cloud cover, and maximum, minimum, and average daily temperatures were also collected and recorded on a Campbell Scientific CR10 DataLogger. ...

Amechi C. Chukwudebe; David L. Cox; Susan J. Palmer; Leslie A. Morneweck; Lori D. Payne; Dennis M. Dunbar; Peter G. Wislocki

1997-09-15T23:59:59.000Z

456

Economics of biomass fuels for electricity production: a case study with crop residues  

E-Print Network [OSTI]

will play a major role in determining the future degree of bioelectricity production: the price of coal and the future price of carbon emissions. Using The Forest and Agricultural Sector Optimization Model—Green House Gas version (FASOMGHG) in a case study...

Maung, Thein Aye

2009-05-15T23:59:59.000Z

457

Low damage and residue?free dry etching of 6H–SiC using electron cyclotron resonance plasma  

Science Journals Connector (OSTI)

Dry etching?inducedsurface damage and contamination on SiC have been investigated for electron cyclotron resonance (ECR) plasma etching and conventional reactive ion etching (RIE) using a CF4/O2 gas mixture. Auger electron spectroscopy shows that there is no residue on the ECR etchedsurfaces and sidewalls of the etched structures. In contrast the conventional RIE process leaves residues containing large amounts of Al F and O impurities on the surfaces and the etched sidewalls. Pd Schottky diodes on the ECR etchedsurface show a near?ideal diode characteristics with ideality factor of 1.06 indicating a good surface quality. Pd Schottky diodes on the conventional RIE etchedsurface however have a substantially reduced barrier height from 1.05 eV for the as?grown sample to 0.64 eV and a high ideality factor of 1.27 indicating a substantially damaged surface. Significant free?carrier reduction is observed in the RIE etched sample.

K. Xie; J. R. Flemish; J. H. Zhao; W. R. Buchwald; L. Casas

1995-01-01T23:59:59.000Z

458

Addendum to the East Tennessee Technology Park Site-Wide Residual Contamination Remedial Investigation Work Plan Oak Ridge, Tennessee  

SciTech Connect (OSTI)

The East Tennessee Technology Park Site-Wide Residual Contamination Remedial Investigation Work Plan (DOE 2004) describes the planned fieldwork to support the remedial investigation (RI) for residual contamination at the East Tennessee Technology Park (ETTP) not addressed in previous Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) decisions. This Addendum describes activities that will be conducted to gather additional information in Zone 1 of the ETTP for groundwater, surface water, and sediments. This Addendum has been developed from agreements reached in meetings held on June 23, 2010, August 25, 2010, October 13, 2010, November 13, 2010, December 1, 2010, and January 13, 2011, with representatives of the U. S. Department of Energy (DOE), U. S. Environmental Protection Agency (EPA), and Tennessee Department of Environment and Conservation (TDEC). Based on historical to recent groundwater data for ETTP and the previously completed Sitewide Remedial Investigation for the ETTP (DOE 2007a), the following six areas of concern have been identified that exhibit groundwater contamination downgradient of these areas above state of Tennessee and EPA drinking water maximum contaminant levels (MCLs): (1) K-720 Fly Ash Pile, (2) K-770 Scrap Yard, (3) Duct Island, (4) K-1085 Firehouse Burn/J.A. Jones Maintenance Area, (5) Contractor's Spoil Area (CSA), and (6) Former K-1070-A Burial Ground. The paper presents a brief summary of the history of the areas, the general conceptual models for the observed groundwater contamination, and the data gaps identified.

SAIC

2011-04-01T23:59:59.000Z

459

Greenhouse gases emissions accounting for typical sewage sludge digestion with energy utilization and residue land application in China  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer GHGs emissions from sludge digestion + residue land use in China were calculated. Black-Right-Pointing-Pointer The AD unit contributes more than 97% of total biogenic GHGs emissions. Black-Right-Pointing-Pointer AD with methane recovery is attractive for sludge GHGs emissions reduction. - Abstract: About 20 million tonnes of sludge (with 80% moisture content) is discharged by the sewage treatment plants per year in China, which, if not treated properly, can be a significant source of greenhouse gases (GHGs) emissions. Anaerobic digestion is a conventional sewage sludge treatment method and will continue to be one of the main technologies in the following years. This research has taken into consideration GHGs emissions from typical processes of sludge thickening + anaerobic digestion + dewatering + residue land application in China. Fossil CO{sub 2}, biogenic CO{sub 2}, CH{sub 4,} and avoided CO{sub 2} as the main objects is discussed respectively. The results show that the total CO{sub 2}-eq is about 1133 kg/t DM (including the biogenic CO{sub 2}), while the net CO{sub 2}-eq is about 372 kg/t DM (excluding the biogenic CO{sub 2}). An anaerobic digestion unit as the main GHGs emission source occupies more than 91% CO{sub 2}-eq of the whole process. The use of biogas is important for achieving carbon dioxide emission reductions, which could reach about 24% of the total CO{sub 2}-eq reduction.

Niu Dongjie, E-mail: niudongjie@tongji.edu.cn [Key Laboratory of Yangtze Aquatic Environment, Ministry of Education, College of Environmental Science and Engineering of Tongji University, 1239 Siping Road, Shanghai 200092 (China); UNEP-Tongji Institute of Environment for Sustainable Development, 1239 Siping Road, Shanghai 200092 (China); Huang Hui [Key Laboratory of Yangtze Aquatic Environment, Ministry of Education, College of Environmental Science and Engineering of Tongji University, 1239 Siping Road, Shanghai 200092 (China); Dai Xiaohu [Key Laboratory of Yangtze Aquatic Environment, Ministry of Education, College of Environmental Science and Engineering of Tongji University, 1239 Siping Road, Shanghai 200092 (China); National Engineering Research Center for Urban Pollution Control, Shanghai 200092 (China); Zhao Youcai [Key Laboratory of Yangtze Aquatic Environment, Ministry of Education, College of Environmental Science and Engineering of Tongji University, 1239 Siping Road, Shanghai 200092 (China)

2013-01-15T23:59:59.000Z

460

Methylmercury in fish: a review of residue levels, fish consumption and regulatory action in the United States  

SciTech Connect (OSTI)

The dangers associated with the consumption of large amounts of methylmercury in fish are well recognized, and there is some evidence to suggest that methylmercury may be the cause of subtle neurological impairments when ingested at even low to moderate levels, particularly the prenatal and early childhood periods. This concern has prompted a continuing assessment of the risk of methylmercury toxicity among fish consumers in the US as well as other countries. The toxicokinetics of methylmercury in humans are reviewed and used to estimate body burdens associated with toxic effects. To determine seafood consumption patterns among the continental US population the Food and Drug Administration (FDA) has analyzed data from a diary study commissioned by the Tuna Research Foundation. Mercury residue levels in domestic fish sampled by the FDA were used to determine the level of exposure to methylmercury. Until evidence is presented that substantially lowers the known body burden of methylmercury which causes toxicity, calculations indicate that the current 1.0 ppm regulatory level provides adequate protection for the average fish consumer, for young children, and for a significant number of consumers exceeding the acceptable daily intake. However, additional studies are being carried out in a continuing process to ensure that safe levels of prenatal exposure to mercury residues in fish are maintained.

Tollefson, L.; Cordle, F.

1986-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues agricultural residues" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

The functions of the flavin contact residues, ?Arg249 and ?Tyr16, in human electron transfer flavoprotein  

Science Journals Connector (OSTI)

Arg249 in the large (?) subunit of human electron transfer flavoprotein (ETF) heterodimer is absolutely conserved throughout the ETF superfamily. The guanidinium group of ?Arg249 is within van der Waals contact distance and lies perpendicular to the xylene subnucleus of the flavin ring, near the region proposed to be involved in electron transfer with medium chain acyl-CoA dehydrogenase. The backbone amide hydrogen of ?Arg249 is within hydrogen bonding distance of the carbonyl oxygen at the flavin C(2). ?Arg249 may modulate the potentials of the two flavin redox couples by hydrogen bonding the carbonyl oxygen at C(2) and by providing delocalized positive charge to neutralize the anionic semiquinone and anionic hydroquinone of the flavin. The potentials of the oxidized/semiquinone and semiquinone/hydroquinone couples decrease in an ?R249K mutant ETF generated by site directed mutagenesis and expression in Escherichia coli, without major alterations of the flavin environment as judged by spectral criteria. The steady state turnover of medium chain acyl-CoA dehydrogenase and glutaryl-CoA dehydrogenase decrease greater than 90% as a result of the ?R249Ks mutation. In contrast, the steady state turnover of short chain acyl-CoA dehydrogenase was decreased about 38% when ?R249K ETF was the electron acceptor. Stopped flow absorbance measurements of the oxidation of reduced medium chain acyl-CoA dehydrogenase/octenoyl-CoA product complex by wild type human ETF at 3°C are biphasic (t1/2=12 ms and 122 ms). The rate of oxidation of this reduced binary complex of the dehydrogenase by the ?R249K mutant ETF is extremely slow and could not be reasonably estimated. ?Asp253 is proposed to function with ?Arg249 in the electron transfer pathway from medium chain acyl-CoA dehydrogenase to ETF. The steady state kinetic constants of the dehydrogenase were not altered when ETF containing an ?D253A mutant was the substrate. However, t1/2 of the rapid phase of oxidation of the reduced medium chain acyl-CoA dehydrogenase/octenoyl-CoA charge transfer complex almost doubled. ?Tyr16 lies on a loop near the C(8) methyl group, and is also near the proposed site for interflavin electron transfer with medium chain acyl-CoA dehydrogenase. The tyrosine residue makes van der Waals contact with the C(8) methyl group of the flavin in human ETF and Paracoccus denitrificans ETF (as ?Tyr13) and lies at a 30°C angle with the plane of the flavin. Human ?Tyr16 was substituted with leucine and alanine residues to investigate the role of this residue in the modulation of the flavin redox potentials and in electron transfer to ETF. In ?Y16L ETF, the potentials of the flavin were slightly reduced, and steady state kinetic constants were modestly altered. Substitution of an alanine residue for ?Tyr16 yields an ETF with potentials very similar to the wild type but with steady state kinetic properties similar to ?Y16L ETF. It is unlikely that the ? methyl group of the alanine residue interacts with the flavin C(8) methyl. Neither substitution of ?Tyr16 had a large effect on the fast phase of ETF reduction by medium chain acyl-CoA dehydrogenase.

Timothy M. Dwyer; Lening Zhang; Michelle Muller; Fedri Marrugo; Frank Frerman

1999-01-01T23:59:59.000Z

462

Neutron Diffraction Residual Strain Tensor Measurements Within The Phase IA Weld Mock-up Plate P-5  

SciTech Connect (OSTI)

Oak Ridge National Laboratory (ORNL) has worked with NRC and EPRI to apply neutron and X-ray diffraction methods to characterize the residual stresses in a number of dissimilar metal weld mockups and samples. The design of the Phase IA specimens aimed to enable stress measurements by several methods and computational modeling of the weld residual stresses. The partial groove in the 304L stainless steel plate was filled with weld beads of Alloy 82. A summary of the weld conditions for each plate is provided in Table 1. The plates were constrained along the long edges during and after welding by bolts with spring-loaded washers attached to the 1-inch thick Al backing plate. The purpose was to avoid stress relief due to bending of the welded stainless steel plate. The neutron diffraction method was one of the methods selected by EPRI for non-destructive through thickness strain and stress measurement. Four different plates (P-3 to P-6) were studied by neutron diffraction strain mapping, representing four different welding conditions. Through thickness neutron diffraction strain mappings at NRSF2 for the four plates and associated strain-free d-zero specimens involved measurement along seven lines across the weld and at six to seven depths. The mountings of each plate for neutron diffraction measurements were such that the diffraction vector was parallel to each of the three primary orthogonal directions of the plate: two in-plane directions, longitudinal and transverse, and the direction normal to the plate (shown in left figure within Table 1). From the three orthogonal strains for each location, the residual stresses along the three plate directions were calculated. The principal axes of the strain and stress tensors, however, need not necessarily align with the plate coordinate system. To explore this, plate P-5 was selected for examination of the possibility that the principal axes of strain are not along the sample coordinate system axes. If adequate data could be collected the goal would be to determine the strain tensor's orientation and magnitude of strain along each principle axis direction.

Hubbard, Camden R [ORNL

2011-09-01T23:59:59.000Z

463

Residues of lead, cadmium, and arsenic in livers of Mexican free-tailed bats  

SciTech Connect (OSTI)

Since 1936, the size of the summer population of Mexican free-tailed bats, Tadarida brasiliensisat Carlsbad Caverns, New Mexico, declined from an estimated 8.7 million to 700,000 in 1991. This decline has been attributed primarily to human disturbance and the heavy agricultural use of organochlorine pesticides. Members of this species forage extensively over heavily agricultural areas, feeding on insects potentially contaminated with high levels of insecticides and trace metals. However, contamination from elements such as lead, cadmium, and arsenic have not been examined. The accumulation of these elements in wild vertebrates is often a primary reflection of contamination of the food supply. The presence of elemental contaminants in body tissues of bats is poorly documented. The objectives of this study were to examine and compare lead, cadmium, and arsenic contamination in livers of adult T. Brasiliensis from Carlsbad Caverns and Vickery Cave, a maternity colony in northwestern Oklahoma. Lead, cadmium, and arsenic were specifically selected because of their documented toxic and/or reproductive effects and their potential availability to this species. Large quantities of tetraethyl lead have been released into the environment and other lead compounds continue to be released by industrial manufacturing and petroleum refinement processes. Cadmium is used in a number of industrial processes such as metal plating and fabrication of alloys and is released from phosphate fertilizers and combusted coals. Teratogenicity appears to be greater for cadmium than for other elements. Arsenical compounds have been commonly used as herbicides and defoliants. These compounds have been demonstrated to cause abnormal embryonic development, degenerative tissue changes, cancer, chromosomal damage, and death in domestic animals.

Thies, M.; Gregory, D. (Oklahoma State Univ., Stillwater (United States))

1994-05-01T23:59:59.000Z

464

Evaluation of a zirconium additive for the mitigation of molten ash formation during combustion of residual fuel oil  

SciTech Connect (OSTI)

Florida Power & Light Company (FP&L) currently fires a residual fuel oil (RFO) containing catalyst fines, which results in a troublesome black aluminosilicate liquid phase that forms on heat-transfer surfaces, remains molten, and flows to the bottom of the boiler. When the unit is shut down for a scheduled outage, this liquid phase freezes to a hard black glass that damages the contracting waterwalls of the boiler. Cleaning the boiler bottom and repairing damaged surfaces increase the boiler downtime, at a significant cost to FP&L. The Energy & Environmental Research Center (EERC) proposed to perform a series of tests for FP&L to evaluate the effectiveness of a zirconium additive to modify the mechanism that forms this liquid phase, resulting in the formation of a dry refractory phase that may be easily handled during cleanup of the boiler.

NONE

1996-12-01T23:59:59.000Z

465

Characterization of solids in residual wastes from single-shell tanks at the Hanford site, Washington, USA.  

SciTech Connect (OSTI)

Solid phase physical and chemical characterization methods have been used in an ongoing study of residual wastes from several single-shell underground waste tanks at the U.S. Department of Energy's Hanford Site in southeastern Washington State. Because these wastes are highly-radioactive dispersible powders and are chemically-complex assemblages of crystalline and amorphous solids that contain contaminants as discrete phases and/or co-precipitated within oxide phases, their detailed characterization offers an extraordinary technical challenge. X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive x-ray spectroscopy (SEM/EDS) are the two principal methods used, along with a limited series of analyses by synchrotron-based methods, to characterize solid phases and their contaminant associations in these wastes.

Krupka, K. M.; Cantrell, K. J.; Todd Schaef, H.; Arey, B. W.; Heald, S. M.; Deutsch, W. J.; Lindberg, M. J. (X-Ray Science Division); ( PSC-US