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Note: This page contains sample records for the topic "hdpe high-density polyethylene" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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1

Nondestructive Evaluation: NDE for High Density Polyethylene (HDPE) Pipe for Cold Fusion  

Science Conference Proceedings (OSTI)

Over the past several years, the Electric Power Research Institute (EPRI) has been investigating nondestructive evaluation (NDE) techniques to volumetrically examine butt fusion joints in high density polyethylene (HDPE) piping. The interest in this comes from AmerenUE’s Callaway Plant and Duke Energy‘s Catawba Plant both submitting relief requests to the U.S. Nuclear Regulatory Commission (NRC) for using HDPE in place of carbon steel piping in Section III, Class 3 systems in accordance with Code Case N-...

2009-11-30T23:59:59.000Z

2

High density polyethylene (HDPE) containers as an alternative to polyethylene terephthalate (PET) bottles for solar disinfection of drinking water in northern region, Ghana  

E-Print Network (OSTI)

The purpose of this study is to investigate the technical feasibility of high density polyethylene (HDPE) containers as an alternative to polyethylene terephthalate (PET) bottles for the solar disinfection of drinking water ...

Yazdani, Iman

2007-01-01T23:59:59.000Z

3

Vacuum Outgassing of High Density Polyethylene  

Science Conference Proceedings (OSTI)

A combination of thermogravimetric analysis (TGA) and temperature programmed decomposition (TPD) was employed to identify the outgassing species, the total amount of outgassing, and the outgassing kinetics of high density polyethylene (HDPE) in a vacuum environment. The isoconversional kinetic analysis was then used to analyze the outgassing kinetics and to predict the long-term outgassing of HDPE in vacuum applications at ambient temperature. H{sub 2}O and C{sub n}H{sub x} with n as high as 9 and x centering around 2n are the major outgassing species from solid HDPE, but the quantities evolved can be significantly reduced by vacuum baking at 368 K for a few hours prior to device assembly.

Dinh, L N; Sze, J; Schildbach, M A; Chinn, S C; Maxwell, R S; Raboin, P; McLean II, W

2008-08-11T23:59:59.000Z

4

Nondestructive Evaluation: High-Density Polyethylene NDE Technology  

Science Conference Proceedings (OSTI)

BackgroundThis report summarizes the results of a study to evaluate and document the process of creating a manufacturing specification for producing quantifiable cold fusion controlled flaws of varying severity in high-density polyethylene (HDPE) fusion joints. This report is a continuation of previous research where nondestructive evaluation (NDE) techniques and flaws representing inclusions and cold fusion were ...

2013-11-22T23:59:59.000Z

5

Fire Testing of High-Density Polyethylene Pipe  

Science Conference Proceedings (OSTI)

The results in this report are intended to demonstrate a method that can be used to protect high-density polyethylene (HDPE) piping located aboveground from postulated fire events. This includes protecting both pipe and pipe fittings (for example, elbows, tees, and valves) from the fire environmentincluding the heat transmitted from pipe supportsand preventing the fire environment from passing through building wall or floor penetrations. The report is intended to be complementary to other ongoing Electr...

2011-08-23T23:59:59.000Z

6

Applicability of High-Density Polyethylene in Nuclear Piping Systems with Internal Radionuclides  

Science Conference Proceedings (OSTI)

This report serves as a preliminary evaluation on the long-term impact of radiation on high-density polyethylene (HDPE) piping for nuclear power plant applications. A short literature review is provided on the impact of radiation on HDPE material, followed by a Monte Carlo N-Particle (MCNP) model of internal radiation exposure from radionuclides commonly encountered at nuclear power facilities. Ultimately, this work seeks to provide guidance on the applicability of HDPE piping in radioactive ...

2013-05-16T23:59:59.000Z

7

Nondestructive Evaluation: Ultrasonic Examination Techniques for High Density Polyethylene Pipes  

Science Conference Proceedings (OSTI)

High density polyethylene (HDPE) pipe has been used as a replacement material for buried carbon steel pipe in non-safety-related systems. Using the current butt fusion procedure that uses heat and pressure to melt and join two sections of plastic pipe, concerns have been raised that would indicate that the presence of decreased bond strength when the welding parameters for fusion set forth by the plastic pipe industry were not followed. Currently two utilities, Ameren UE at Callaway and Duke-Energy at Ca...

2011-11-15T23:59:59.000Z

8

PORTSMOUTH ON-SITE DISPOSAL CELL HIGH DENSITY POLYETHYLENE GEOMEMBRANE LONGEVITY  

Science Conference Proceedings (OSTI)

It is anticipated that high density polyethylene (HDPE) geomembranes will be utilized within the liner and closure cap of the proposed On-Site Disposal Cell (OSDC) at the Portsmouth Gaseous Diffusion Plant. The likely longevity (i.e. service life) of HDPE geomembranes in OSDC service is evaluated within the following sections of this report: (1) Section 2.0 provides an overview of HDPE geomembranes, (2) Section 3.0 outlines potential HDPE geomembranes degradation mechanisms, (3) Section 4.0 evaluates the applicability of HDPE geomembrane degradation mechanisms to the Portsmouth OSDC, (4) Section 5.0 provides a discussion of the current state of knowledge relative to the longevity (service life) of HDPE geomembranes, including the relation of this knowledge to the Portsmouth OSDC, and (5) Section 6.0 provides summary and conclusions relative to the anticipated service life of HDPE geomembranes in OSDC service. Based upon this evaluation it is anticipated that the service life of HDPE geomembranes in OSDC service would be significantly greater than the 200 year service life assumed for the OSDC closure cap and liner HDPE geomembranes. That is, a 200 year OSDC HDPE geomembrane service life is considered a conservative assumption.

Phifer, M.

2012-01-31T23:59:59.000Z

9

An Assessment of Industry Data Related to Essential Variables for Fusing High Density Polyethylene Pipe  

Science Conference Proceedings (OSTI)

The Nuclear Regulatory Commission has expressed concern about the essential variables used for fusing safety-related nuclear power plant piping systems constructed of high density polyethylene (HDPE). The essential variables detailed in the American Society of Mechanical Engineers (ASME) Code Case N-755-1, “Use of Polyethylene (PE) Plastic Pipe,” were considered to be incomplete. In addition, there were questions about using data in the Plastic Pipe Institute (PPI) report TR-33 ...

2013-07-31T23:59:59.000Z

10

Fracture behavior of kaolin-reinforced high density polyethylene  

SciTech Connect

The addition of the low-cost mineral filler kaolin to high-density polyethylene (HDPE) creates a composite with both improved stiffness and toughness properties. This study focuses on two aspects of the toughness of these composites: the fracture toughness increment produced by work at the fracture surface and the directionality induced by the injection molding fabrication process. The Essential Work of Fracture (EWF) method gives results which show that a higher volume fraction of kaolin produces more surface work, consistent with earlier work using Compact Tension (CT) tests. The EWF method also demonstrates that a lower volume fraction can produce a higher overall plastic work and apparent toughness. A heat treatment that removes the orientation of the matrix but not that of the particles was applied to study the effect of matrix crystallinity. The results indicate that the matrix supramolecular structure (crystallinity and skin-core effect) is responsible for the directionality of toughness, and that a heat treatment can be used to produce high toughness behavior in both major directions.

Wetherhold, R.C.; Mouzakis, D.E.

1999-10-01T23:59:59.000Z

11

Kinetics of Moisture Absorption for Alkali Extracted Steam-Exploded Fiber Filled High-Density Polyethylene Composites  

Science Conference Proceedings (OSTI)

Acacia mangium wood fiber derived from steam-explosion and fiber fractionation treatment was used as fillers for high-density polyethylene (HDPE). The alkali extracted steam-exploded fibers (AEF) obtained were acetylated to produce acetylated fibers (AAEF) having three different weight percent gain (WPG). Composites of AEF or AAEF and HDPE were prepared via 2-roll mill, compression molded and cut into dumbbell specimens. All samples were immersed in water at room temperature for 30 days. The process of absorption of water by all composites followed the kinetics and mechanisms described by the Fick's theory. Diffusion coefficient (D) values increased with filler loading but decreased with increasing WPG of the AAEF fiber. Further decrease was observed when maleated polyethylene (MAPE) was added to the composite system. This was due to improved fiber-matrix adhesion that restricts movement of water molecules from further penetrate inside the composite structures.

Taib, R. M.; Ramarad, S.; Ishak, Z. A. M. [School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang (Malaysia); Rozman, H. D. [School of Industrial Technology, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang (Malaysia)

2010-03-11T23:59:59.000Z

12

Current Activities Assessing Butt Fusion Joint Integrity in High Density Polyethylene Piping  

SciTech Connect

The Pacific Northwest National Laboratory (PNNL) in Richland, Washington, conducted initial studies to evaluate the effectiveness of nondestructive examinations (NDE) coupled with mechanical testing for assessing butt fusion joint integrity in high density polyethylene (HDPE) pipe. The work provided insightful information to the United States Nuclear Regulatory Commission (NRC) on the effectiveness of volumetric inspection techniques for detecting lack of fusion (LOF) conditions in the fusion joints. HDPE has been installed on a limited basis in American Society of Mechanical Engineers (ASME) Class 3, buried piping systems at several operating U.S. nuclear power plants and has been proposed for use in new construction. A comparison was made between the results from ultrasonic and microwave nondestructive examinations and the results from mechanical destructive evaluations, specifically the high-speed tensile test and the side-bend test, for determining joint integrity. The data comparison revealed that none of the NDE techniques detected all of the lack-of-fusion conditions that were revealed by the destructive tests. Follow-on work has recently been initiated at PNNL to accurately characterize the NDE responses from machined flaws of varying size and location in PE 4710 materials as well as the LOF condition. This effort is directed at quantifying the ability of volumetric NDE techniques to detect flaws in relation to the critical flaw size associated with joint integrity. A status of these latest investigations is presented.

Crawford, Susan L.; Cinson, Anthony D.; Doctor, Steven R.; Denslow, Kayte M.

2012-09-01T23:59:59.000Z

13

Dynamic Tensile Extrusion of High-density Polyethylene  

Science Conference Proceedings (OSTI)

Depending on the extrusion ratios and velocities HDPE damage varies gross ... Characterization of the Dynamic Behavior of Recycled Polypropylene-based Composites ... Shock Compression Behavior of Bi-material Powder Composites with ...

14

Form-stable crystalline polymer pellets for thermal energy storage: high density polyethylene intermediate products. Final report, October 1, 1977--January 31, 1978  

DOE Green Energy (OSTI)

The primary objectives of this program were to demonstrate: (1) that form-stable high density polyethylene (HDPE), which has been shown to have desirable properties as a phase-change type of thermal energy storage material, could be produced by processing in a polyethylene plant for a projected price near 26 cents/lb; and (2) that the raw material, ethylene, will be available in the very long-term from alternate sources (other than petroleum and natural gas). These objectives were accomplished. Production of useful, form-stable HDPE pellets by radiation cross-linking was demonstrated. Such pellets are estimated to be obtainable at 26 cents/lb, using large-volume (> or equal to 10,000,000 lb/yr) in-plant processing. Well-developed technologies exist for obtaining ethylene from coal and plant (or biomass) sources, thus assuring its long-term availability and therefore that of polyethylene. A cost-benefit analysis of the HDPE thermal energy storage system was conducted over its 120 to 140/sup 0/C optimum operating range which is most suited for absorption air conditioning. The HDPE is more cost effective than either rocks, ethylene glycol, or pressurized water and is even competitive with a hypothetical 5 cents/lb salt-hydrate melting in this temperature range. These results applied, as appropriate, to both air and liquid transfer systems.

Botham, R.A.; Ball, G.L. III; Jenkins, G.H.; Salyer, I.O.

1978-01-01T23:59:59.000Z

15

Enhancement of mechanical strength of TiO{sub 2}/high-density polyethylene composites for bone repair with silane-coupling treatment  

SciTech Connect

Mechanical properties of composites made up of high-density polyethylene (HDPE) and silanated TiO{sub 2} particles for use as a bone-repairing material were investigated in comparison with those of the composites of HDPE with unsilanized TiO{sub 2} particles. The interfacial morphology and interaction between silanated TiO{sub 2} and HDPE were analyzed by means of Fourier transform infrared (FT-IR) spectroscopy and scanning electron microscopy (SEM). The absorption in spectral bands related to the carboxyl bond in the silane-coupling agent, the vinyl group in the HDPE, and the formation of the ether bond was studied in order to assess the influence of the silane-coupling agent. The SEM micrograph showed that the 'bridging effect' between HDPE and TiO{sub 2} was brought about by the silane-coupling agent. The use of the silane-coupling agent and the increase of the hot-pressing pressure for shaping the composites facilitated the penetration of polymer into cavities between individual TiO{sub 2} particles, which increased the density of the composite. Therefore, mechanical properties such as bending yield strength and Young's modulus increased from 49 MPa and 7.5 GPa to 65 MPa and 10 GPa, respectively, after the silane-coupling treatment and increase in the hot-pressing pressure.

Hashimoto, Masami [Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta-ku, Nagoya 456-8587 (Japan)]. E-mail: masami@jfcc.or.jp; Takadama, Hiroaki [Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta-ku, Nagoya 456-8587 (Japan)]. E-mail: takadama@jfcc.or.jp; Mizuno, Mineo [Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta-ku, Nagoya 456-8587 (Japan)]. E-mail: mizuno@jfcc.or.jp; Kokubo, Tadashi [Research Institute for Science and Technology, Chubu University, 1200 Matsumoto-cho, Kasugai 487-8501 (Japan)]. E-mail: kokubo@isc.chubu.ac.jp

2006-03-09T23:59:59.000Z

16

Polyethylene Pipe Failure in the Arctic - Programmaster.org  

Science Conference Proceedings (OSTI)

In the current study, a new high density polyethylene (HDPE) pipe in the Arctic region of ... Heat Tint Effects on General Corrosion Resistance of Stainless Steels .

17

Effect of addition of soybean oil and gamma-ray cross-linking on the nanoporous HDPE membrane  

Science Conference Proceedings (OSTI)

A nanoporous high-density polyethylene (HDPE) membrane was prepared by a wet process. Soybean oil and dibutyl phthalate (DBP) were premixed as codiluents, and gamma-rays were used for the cross-linking of HDPE. The pore volume of the nanoporous HDPE ...

Jong-Seok Park; Jong-Bae Choi; Hui-Jeong Gwon; Youn-Mook Lim; Myung Seob Khil; Phil-Hyun Kang; Young-Chang Nho

2012-01-01T23:59:59.000Z

18

Design and Qualification of High-Density Polyethylene for ASME Safety Class 3 Piping Systems  

Science Conference Proceedings (OSTI)

This report identifies the activities necessary and recommends a plan to gather needed data to establish design and qualification methods that will serve as the basis for ASME and regulatory approvals for allowing the nuclear power industry to use high-density polyethylene for Safety Class 3 applications.

2005-12-23T23:59:59.000Z

19

Determination of unconverted HDPE in coal/plastics co-liquefaction stream samples  

DOE Green Energy (OSTI)

In several coal/plastics liquefaction runs performed by Hydrocarbon Technologies, Inc. (HTI), a substantial amount of incompletely converted high-density polyethylene (HDPE) was present in ash-free recycle resid streams when either the ROSE-SR unit was used in Run POC-2, or the pressure filter unit was used in Runs CMSL-8 and CMSL-9. This indicates that the HDPE is less reactive than coal at the liquefaction conditions used. In these ash-free streams, there is no solid organic or inorganic material arising from the coal, and the incompletely converted HDPE can be recovered by extraction and filtration with tetrahydrofuran (THF) at room temperature. The HDPE (or HDPE-like material, which could also consist of heavy waxes) is THF insoluble. However, in ashy streams, there are both inorganic ({open_quotes}ash{close_quotes}) and organic (unconverted coal) components present from liquefaction of the coal, that interfere with an easy and clean separation of the HDPE from the coal/plastics liquefaction stream sample. Therefore, CONSOL developed an analytical procedure for HDPE in the ashy stream samples based on extraction of HDPE from the sample using hot (150{degrees}C) decalin (decahydronaphthalene), in which the HDPE is soluble. The decalin extraction is both preceded and succeeded by extractions and washes with THF at room temperature, to remove the coal-derived components from the sample.

Robbins, G.A.; Winschel, R.A.; Burke, F.P.

1996-12-31T23:59:59.000Z

20

Profiles in garbage: Polyethylene terephthalate  

Science Conference Proceedings (OSTI)

Polyethylene terephthalate (PET) is a plastic resin used primarily to make bottles. Soft drinks -- along with salad dressing, fruit juices, peanut butter, and other household and consumer products -- use PET bottles. PET also is used for film, sheeting for cups and food trays, oven-safe trays, and other uses. PET is a relatively new packaging resin, first commercialized in the early 1970s. Because it is an ``engineered`` resin, PET is more expensive than commodity resins such as high-density polyethylene (HDPE) and, for the same reason, it is usually the highest valued plastic recyclable.

Miller, C. [Environmental Industry Associations, Washington, DC (United States)

1997-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Criticality Evaluation of Plutonium-239 Moderated by High-Density Polyethylene in Stainless Steel and Aluminum Containers Suitable for Non-Exclusive Use Transport  

SciTech Connect

Research is conducted at the Joint Actinide Shock Physics Experimental Facility (JASPER) on the effects of high pressure and temperature environments on plutonium-239, in support of the stockpile stewardship program. Once an experiment has been completed, it is necessary to transport the end products for interim storage or final disposition. Federal shipping regulations for nonexclusive use transportation require that no more than 180 grams of fissile material are present in at least 360 kilograms of contiguous non-fissile material. To evaluate the conservatism of these regulatory requirements, a worst-case scenario of 180g {sup 239}Pu and a more realistic scenario of 100g {sup 239}Pu were modeled using one of Lawrence Livermore National Laboratory's Monte Carlo transport codes known as COG 10. The geometry consisted of {sup 239}Pu spheres homogeneously mixed with high-density polyethylene surrounded by a cube of either stainless steel 304 or aluminum. An optimized geometry for both cube materials and hydrogen-to-fissile isotope (H/X) ratio were determined for a single unit. Infinite and finite 3D arrays of these optimized units were then simulated to determine if the systems would exceed criticality. Completion of these simulations showed that the optimal H/X ratio for the most reactive units ranged from 800 to 1600. A single unit of either cube type for either scenario would not reach criticality. An infinite array was determined to reach criticality only for the 180g case. The offsetting of spheres in their respective cubes was also considered and showed a considerable decrease in the number of close-packed units needed to reach criticality. These results call into question the current regulations for fissile material transport, which under certain circumstances may not be sufficient in preventing the development of a critical system. However, a conservative, theoretical approach was taken in all assumptions and such idealized configurations may not be likely to be encountered in actual packaging, transportation, and storage configurations. Modeling of realistic, as-built configurations is beyond the scope of this study.

Watson, T T

2007-08-10T23:59:59.000Z

22

ORIGINAL PAPER BambooFiber Filled High Density Polyethylene Composites  

E-Print Network (OSTI)

and China. Bamboo is one of the fastest renewable plants with a maturity cycle of 3­4 years. Bamboo has and low G. Han College of Material Science and Engineering, Northeast Forestry University, Harbin, China Y. Lei Á Q. Wu (&) School of Renewable Natural Resources, Louisiana State University Agricultural Center

23

Incipient and Progressive Damage in Polyethylene Under Extreme Tensile Conditions  

Science Conference Proceedings (OSTI)

The Dynamic-Tensile-Extrusion (Dyn-Ten-Ext) test was developed at LANL by Gray and coworkers to probe the tensile response of materials at large strains (>1) and high strain-rates (>1000/s) by firing projectiles through a conical die at 300-700 m/s. This technique has recently been applied to various polymers, such as the fluoropolymers PTFE (Teflon) and the chemically similar PCTFE, which respectively exhibited catastrophic fragmentation and distributed dynamic necking. This work details investigations of the Dyn-Ten-Ext response of high density polyethylene, both to failure and sub-critical conditions. At large extrusion ratios ({approx}7.4) and high velocities, such as those previously employed, HDPE catastrophically fragmented in a craze-like manner in the extruded jet. At more modest extrusion ratios and high velocities the specimen extruded a stable jet that ruptured cleanly, and at lower velocities was recovered intact after sustaining substantial internal damage. Thermomechanical finite element simulations showed that the damage corresponded to a locus of shear stress in the presence of hydrostatic tension. X-ray computed tomography corroborated the prediction of a shear damage mechanism by finding the region of partially damaged material to consist of macroscopic shear-mode cracks nearly aligned with the extrusion axis, originating from the location of damage inception.

Furmanski, Jevan [Los Alamos National Laboratory; Brown, Eric [Los Alamos National Laboratory; Trujillo, Carl P. [Los Alamos National Laboratory; Martinez, Daniel Tito [Los Alamos National Laboratory; Gray, George T. III [Los Alamos National Laboratory

2012-06-07T23:59:59.000Z

24

EVALUATION OF HDPE CONTAINERS FOR MACROENCAPSULATION OF MIXED WASTE DEBRIS  

SciTech Connect

Macroencapsulation is currently available at facilities permitted by the U.S. Environmental Protection agency for the treatment of radioactively contaminated hazardous waste. The U.S. Department of Energy is evaluating the use of high-density polyethylene containers to provide a simpler means of meeting macroencapsulation requirements. Macroencapsulation is used for the purpose of isolating waste from the disposal environment in order to meet the Land Disposal Restriction treatment standards for debris-like waste. The containers being evaluated have the potential of providing a long-term reduction in the leachability and subsequent mobility of both the hazardous and radioactive contaminants in this waste while at the same allowing treatment by the generator as the waste is being generated. While the testing discussed in this paper shows that further developmental work is necessary, these tests also indicate that these containers have the potential to reduce the cost, schedule, and complexity of meeting the treatment standard for mixed waste debris.

Eaton, David; Carlson, Tim; Gardner, Brad; Bushmaker, Robert; Battleson, Dan; Shaw, Mark; Bierce, Lawrence

2003-02-27T23:59:59.000Z

25

High density load bearing insulation peg  

DOE Patents (OSTI)

A high density peg is disclosed which can support a large load and exhibits excellent thermal resistance produced by a method wherein the peg is made in compliance with specified conditions of time, temperature and pressure. 4 figs.

Nowobilski, J.J.; Owens, W.J.

1985-01-29T23:59:59.000Z

26

High Density Fuel Development for Research Reactors  

SciTech Connect

An international effort to develop, qualify, and license high and very high density fuels has been underway for several years within the framework of multi-national RERTR programs. The current development status is the result of significant contributions from many laboratories, specifically CNEA in Argentina, AECL in Canada, CEA in France, TUM in Germany, KAERI in Korea, VNIIM, RDIPE, IPPE, NCCP and RIARR in Russia, INL, ANL and Y-12 in USA. These programs are mainly engaged with UMo dispersion fuels with densities from 6 to 8 gU/cm3 (high density fuel) and UMo monolithic fuel with density as high as 16 gU/cm3 (very high density fuel). This paper, mainly focused on the French & US programs, gives the status of high density UMo fuel development and perspectives on their qualification.

Daniel Wachs; Dennis Keiser; Mitchell Meyer; Douglas Burkes; Curtis Clark; Glenn Moore; Jan-Fong Jue; Totju Totev; Gerard Hofman; Tom Wiencek; Yeon So Kim; Jim Snelgrove

2007-09-01T23:59:59.000Z

27

High density load bearing insulation peg  

DOE Patents (OSTI)

A high density peg which can support a large load and exhibits excellent thermal resistance produced by a method wherein the peg is made in compliance with specified conditions of time, temperature and pressure.

Nowobilski, Jeffert J. (Orchard Park, NY); Owens, William J. (Kenmore, NY)

1985-01-01T23:59:59.000Z

28

Large-Strain Time-Temperature Equivalence and Adiabatic Heating of Polyethylene  

Science Conference Proceedings (OSTI)

Time-temperature equivalence is a well-known phenomenon in time-dependent material response, where rapid events at a moderate temperature are indistinguishable from some occurring at modest rates but elevated temperatures. However, there is as-yet little elucidation of how well this equivalence holds for substantial plastic strains. In this work, we demonstrate time-temperature equivalence over a large range in a previously studied high-density polyethylene formulation (HDPE). At strain-rates exceeding 0.1/s, adiabatic heating confounds the comparison of nominally isothermal material response, apparently violating time-temperature equivalence. Strain-rate jumps can be employed to access the instantaneous true strain rate without heating. Adiabatic heating effects were isolated by comparing a locus of isothermal instantaneous flow stress measurements from strain-rate jumps up to 1/s with the predicted equivalent states at 0.01/s and 0.001/s in compression. Excellent agreement between the isothermal jump condition locus and the quasi-static tests was observed up to 50% strain, yielding one effective isothermal plastic response for each material for a given time-temperature equivalent state. These results imply that time-temperature equivalence can be effectively used to predict the deformation response of polymers during extreme mechanical events (large strain and high strain-rate) from measurements taken at reduced temperatures and nominal strain-rates in the laboratory.

Furmanski, Jevan [Los Alamos National Laboratory; Brown, Eric [Los Alamos National Laboratory; Cady, Carl M. [Los Alamos National Laboratory

2012-06-06T23:59:59.000Z

29

Interaction of Polyethylene and Tritium Gas as Monitored by Raman Spectroscopy  

SciTech Connect

Irradiation of high-density polyethylene by ~1 atm overpressure of T2 gas at 23+- 2 degrees C has been shown to produce severe damage, about 200 MRad dose, within 6 months. Production rate of H2 gas from irradiation due to polymer incorporation of tritium increased quickly within the first 2 months, after which it slowed considerably. It is proposed that outgassing of H2 acted to inhibit diffusion of solubilized HT or T2 into the bulk, thereby limiting increases in polymer T incorporation and thus damage rate. Damage to the HDPE sample was found to be nonuniform. Laser fluorescence from the sample surface irradiated by the supply of T2 gas was ~10{sup}3-fold greater in the energy deposition layer than the fluroescence from bulk polymer after 2 months. This factor was within an order of magnitude of calculated dosages to surface and bulk. Fluorescence from the bulk, apparently caused by unsaturated polyene groups formed during irradiation, grew in time about proportionally to H2 generation and thus dose. An appreciable concentration of radical or ion-radical polyenes at room temperature could be recombined by bleaching for 15 minutes at ~150 degrees C; these species appeared to reform over night at room temperature.

Gill, J. T.

1985-12-31T23:59:59.000Z

30

High density laser-driven target  

DOE Patents (OSTI)

A high density target for implosion by laser energy composed of a central quantity of fuel surrounded by a high-Z pusher shell with a low-Z ablator-pusher shell spaced therefrom forming a region filled with low-density material.

Lindl, John D. (San Ramon, CA)

1981-01-01T23:59:59.000Z

31

Relation between the High Density Phase and the Very-High Density Phase of Amorphous Solid Water  

E-Print Network (OSTI)

Relation between the High Density Phase and the Very-High Density Phase of Amorphous Solid Water; published 18 March 2005) It has been suggested that high-density amorphous (HDA) ice is a structurally arrested form of high- density liquid (HDL) water, while low-density amorphous ice is a structurally

Sciortino, Francesco

32

Ohmically heated high-density Z pinch  

SciTech Connect

The gross properties of a high-density (n approximately equal to 10$sup 27$ m$sup -3$), small-radius, (r = 10$sup -4$ m) gas-imbedded Z pinch have been examined considering only classical processes. The rate equation using only ohmic heating along with bremsstrahlung and radial heat transport shows that ohmic heating will rapidly take the pinch to thermonuclear temperatures for currents, I, greater than 1 MA. The radial heat loss for the pinch is very small for I greater than 1.5 MA. This suggests that the pinch could tolerate being driven to a nearby wall by an m = 1 kink. The laser technology for initiation of the small-diameter filament and the high-voltage technology for giving a 30-ns rise to a MA or more are available now. Some reactor considerations have been included. (auth)

Hammel, J.E.

1976-01-01T23:59:59.000Z

33

Kinetics driving high-density chlorine plasmas  

Science Conference Proceedings (OSTI)

A simple fluid model was developed in order to investigate the driving kinetics of neutral and charged species in high-density chlorine plasmas. It was found that the dissociation degree of Cl{sub 2} molecules is directly linked to the power balance of the discharge which controls the electron density. The model was also used to identify those reactions that could be neglected in the particle balance of charged species and those that must be included. Our results further indicate that diffusion losses need to be considered up to a pressure that depends on magnetic-field intensity and reactor aspect ratio. Finally, it is shown that the dominant charged carriers are linked to the dissociation level of Cl{sub 2} molecules.

Stafford, L.; Margot, J.; Vidal, F.; Chaker, M.; Giroux, K.; Poirier, J.-S.; Quintal-Leonard, A.; Saussac, J. [Department de physique, Universite de Montreal, Montreal, Quebec (Canada); INRS-Energie, Materiaux et Telecommunications, Varennes, Quebec (Canada); Department de physique, Universite de Montreal, Montreal, Quebec (Canada)

2005-09-15T23:59:59.000Z

34

Inexpensive Production of High Density Thin Ceramic Films on ...  

Steven Visco, Lutgard DeJonghe, and Craig Jacobson have developed a simple, inexpensive method for producing high density, crack-free, thin ceramic ...

35

Phase diagram of amorphous solid water: Low-density, high-density, and very-high-density amorphous ices  

E-Print Network (OSTI)

for the understanding of the transformation between the different amorphous ices and the two hypothesized phasesPhase diagram of amorphous solid water: Low-density, high-density, and very-high-density amorphous ices Nicolas Giovambattista,1,2 H. Eugene Stanley,2 and Francesco Sciortino3 1 Department of Chemical

Sciortino, Francesco

36

Comparison between Bio-composite Based on Green HDPE/ Brazil ...  

Science Conference Proceedings (OSTI)

Development of Low-density Polyethylene (LDPE) Composites Reinforced ... Study of Recovery and Recrystallisation in ODS Ferritic Steel Powder ... Polypropylene Nanocomposites Reinforced with Organophilic Clay and Brazilian Nut Fibers.

37

Magnetic Fields in High-Density Stellar Matter  

E-Print Network (OSTI)

I briefly review some aspects of the effect of magnetic fields in the high density regime relevant to neutron stars, focusing mainly on compact star structure and composition, superconductivity, combustion processes, and gamma ray bursts.

German Lugones

2005-04-20T23:59:59.000Z

38

High-density Fuel Development for High Performance Research ...  

Science Conference Proceedings (OSTI)

Abstract Scope, High density UMo (7-12wt% Mo) fuel for high performance research ... High Energy X-ray Diffraction Study of Deformation Behavior of Alloy HT9.

39

Microsoft Word - SRS-WD-2010-001_R0_Final_9-30-10.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

HA Hazard Analysis HAW High Activity Waste HDPE High Density Polyethylene HEU Highly Enriched Uranium HM H-Modified hr hour(s) HRR Highly Radioactive Radionuclide HTF H-Tank Farm...

40

PREPARATION OF HIGH-DENSITY THORIUM OXIDE SPHERES  

DOE Patents (OSTI)

A method of preparing high-density thorium oxide spheres for use in pellet beds in nuclear reactors is presented. Sinterable thorium oxide is first converted to free-flowing granules by means such as compression into a compact and comminution of the compact. The granules are then compressed into cubes having a density of 5.0 to 5.3 grams per cubic centimeter. The cubes are tumbled to form spheres by attrition, and the spheres are then fired at 1250 to 1350 deg C. The fired spheres are then polished and fired at a temperature above 1650 deg C to obtain high density. Spherical pellets produced by this method are highly resistant to mechanical attrition hy water. (AEC)

McNees, R.A. Jr.; Taylor, A.J.

1963-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Neutron spectroscopy of high-density amorphous ice.  

DOE Green Energy (OSTI)

Vibrational spectra of high-density amorphous ice (hda-ice) for H{sub 2}O and D{sub 2}O samples were measured by inelastic neutron scattering. The measured spectra of hda-ice are closer to those for high-pressure phase ice-VI, but not for low-density ice-Ih. This result suggests that similar to ice-VI the structure of hda-ice should consist of two interpenetrating hydrogen-bonded networks having no hydrogen bonds between themselves.

Kolesnikov, A. I.

1998-07-17T23:59:59.000Z

42

A Cherenkov Radiation Detector with High Density Aerogels  

E-Print Network (OSTI)

We have designed a threshold Cherenkov detector at the Rutherford-Appleton Laboratory to identify muons with momenta between 230 and 350 MeV/c. We investigated the properties of three aerogels for the design. The nominal indexes of refraction were n = 1.03, 1.07, 1.12, respectively. Two of the samples are of high density aerogel not commonly used for Cherenkov light detection. We present results of an examination of some optical properties of the aerogel samples and present basic test beam results.

Cremaldi, Lucien; Sonnek, Peter; Summers, Donald J; Reidy, Jim

2009-01-01T23:59:59.000Z

43

High density electronic circuit and process for making  

DOE Patents (OSTI)

High density circuits with posts that protrude beyond one surface of a substrate to provide easy mounting of devices such as integrated circuits are disclosed. The posts also provide stress relief to accommodate differential thermal expansion. The process allows high interconnect density with fewer alignment restrictions and less wasted circuit area than previous processes. The resulting substrates can be test platforms for die testing and for multi-chip module substrate testing. The test platform can contain active components and emulate realistic operational conditions, replacing shorts/opens net testing. 8 figs.

Morgan, W.P.

1999-06-29T23:59:59.000Z

44

Reference material RM 7811-7 for identification cards with high coercivity high density magnetic stripes  

E-Print Network (OSTI)

Reference material RM 7811-7 for identification cards with high coercivity high density magnetic stripes

Albrecht, M

2003-01-01T23:59:59.000Z

45

Communal Polyethylene Biogas Systems.  

E-Print Network (OSTI)

?? In Lembang, a farming community on western Java, family-sized, plug-flow, polyethylene biogas systems fed with cow dung, are being used as an integrated solution… (more)

Stoddard, Isak

2010-01-01T23:59:59.000Z

46

Phase Diagram of Amorphous Solid Water: Low-Density, High-Density, and Very-High-Density Amorphous Ices  

E-Print Network (OSTI)

We describe the phase diagram of amorphous solid water by performing molecular dynamics simulations. Our simulations follow different paths in the phase diagram: isothermal compression/decompression, isochoric cooling/heating and isobaric cooling/heating. We are able to identify low-density amorphous (LDA), high-density amorphous (HDA), and very-high density amorphous (VHDA) ices. The density $\\rho$ of these glasses at different pressure $P$ and temperature $T$ agree well with experimental values. We also study the radial distribution functions of glassy water. We obtain VHDA by isobaric heating of HDA, as in experiment. We also find that ``other forms'' of glassy water can be obtained upon isobaric heating of LDA, as well as amorphous ices formed during the transformation of LDA to HDA. We argue that these other forms of amorphous ices, as well as VHDA, are not altogether new glasses but rather are the result of aging induced by heating. Samples of HDA and VHDA with different densities are recovered at normal $P$, showing that there is a continuum of glasses. Furthermore, the two ranges of densities of recovered HDA and recovered VHDA overlap at ambient $P$. Our simulations are consistent with the possibility of HDA$\\to$LDA and VHDA$\\to$LDA transformations, reproducing the experimental findings. We do not observe a VHDA$\\to$HDA transformation.

Nicolas Giovambattista; H. Eugene Stanley; Francesco Sciortino

2005-02-22T23:59:59.000Z

47

Polyethylene Encapsulated Depleted Uranium  

NLE Websites -- All DOE Office Websites (Extended Search)

Poly DU Poly DU Polyethylene Encapsulated Depleted Uranium Technology Description: Brookhaven National Laboratory (BNL) has completed preliminary work to investigate the feasibility of encapsulating DU in low density polyethylene to form a stable, dense product. DU loadings as high as 90 wt% were achieved. A maximum product density of 4.2 g/cm3 was achieved using UO3, but increased product density using UO2 is estimated at 6.1 g/cm3. Additional product density improvements up to about 7.2 g/cm3 were projected using DU aggregate in a hybrid technique known as micro/macroencapsulation.[1] A U.S. patent for this process has been received.[2] Figure 1 Figure 1: DU Encapsulated in polyethylene samples produced at BNL containing 80 wt % depleted UO3 A recent DU market study by Kapline Enterprises, Inc. for DOE thoroughly identified and rated potential applications and markets for DU metal and oxide materials.[3] Because of its workability and high DU loading capability, the polyethylene encapsulated DU could readily be fabricated as counterweights/ballast (for use in airplanes, helicopters, ships and missiles), flywheels, armor, and projectiles. Also, polyethylene encapsulated DU is an effective shielding material for both gamma and neutron radiation, with potential application for shielding high activity waste (e.g., ion exchange resins, glass gems), spent fuel dry storage casks, and high energy experimental facilities (e.g., accelerator targets) to reduce radiation exposures to workers and the public.

48

Effect of seawater environmental exposure on fatigue properties of polyethylene pipe  

DOE Green Energy (OSTI)

One laboratory study at NIT was reported to show an unexpected decrease in crystallinity for a polyethylene material exposed to fatigue loading in a synthetic seawater solution. High density polyethylene Sclairpipe, from the OTEC-1 cold water pipe, was evaluated for resistance to corrosion fatigue in natural seawater. Intermediate crystallinity measurements (via bulk density) showed no effect of corrosion fatigue exposure. Heat of fusion (a relative indicator of crystallinity) also showed no effect of the exposure. Seawater exposure produced no significant change in tensile strength. One failure was observed during the corrosion fatigue tests and was attributed to porosity observed by fractography. These data suggest that high density polyethylene is not significantly sensitive to degradation of fatigue strength in natural seawater.

Tipton, D G

1980-10-01T23:59:59.000Z

49

High-Density Infrared Surface Treatments of Refractories  

SciTech Connect

Refractory materials play a crucial role in all energy-intensive industries and are truly a crosscutting technology for the Industries of the Future (IOF). One of the major mechanisms for the degradation of refractories and a general decrease in their performance has been the penetration and corrosion by molten metals or glass. Methods and materials that would reduce the penetration, wetting, and corrosive chemistry would significantly improve refractory performance and also maintain the quality of the processed liquid, be it metal or glass. This report presents the results of an R&D project aimed at investigating the use of high-density infrared (HDI) heating to surface treat refractories to improve their performance. The project was a joint effort between Oak Ridge National Laboratory (ORNL) and the University of Missouri-Rolla (UMR). HDI is capable of heating the near-surface region of materials to very high temperatures where sintering, diffusion, and melting can occur. The intended benefits of HDI processing of refractories were to (1) reduce surface porosity (by essentially sealing the surface to prevent liquid penetration), (2) allow surface chemistry changes to be performed by bonding an adherent coating onto the underlying refractory (in order to inhibit wetting and/or improve corrosion resistance), and (3) produce noncontact refractories with high-emissivity surface coatings.

Tiegs, T.N.

2005-03-31T23:59:59.000Z

50

Tilescope: online analysis pipeline for high-density tiling microarray data Zhengdong D. Zhang1  

E-Print Network (OSTI)

1 Tilescope: online analysis pipeline for high-density tiling microarray data Zhengdong D. Zhang1 pipeline Key words: high-density tiling microarray, high-density oligonucleotide microarray, microarray processing pipeline for analyzing tiling array data (http://tilescope.gersteinlab.org). In a completely

Gerstein, Mark

51

Surface interactions involved in flashover with high density electronegative gases.  

Science Conference Proceedings (OSTI)

This report examines the interactions involved with flashover along a surface in high density electronegative gases. The focus is on fast ionization processes rather than the later time ionic drift or thermalization of the discharge. A kinetic simulation of the gas and surface is used to examine electron multiplication and includes gas collision, excitation and ionization, and attachment processes, gas photoionization and surface photoemission processes, as well as surface attachment. These rates are then used in a 1.5D fluid ionization wave (streamer) model to study streamer propagation with and without the surface in air and in SF6. The 1.5D model therefore includes rates for all these processes. To get a better estimate for the behavior of the radius we have studied radial expansion of the streamer in air and in SF6. The focus of the modeling is on voltage and field level changes (with and without a surface) rather than secondary effects, such as, velocities or changes in discharge path. An experiment has been set up to carry out measurements of threshold voltages, streamer velocities, and other discharge characteristics. This setup includes both electrical and photographic diagnostics (streak and framing cameras). We have observed little change in critical field levels (where avalanche multiplication sets in) in the gas alone versus with the surface. Comparisons between model calculations and experimental measurements are in agreement with this. We have examined streamer sustaining fields (field which maintains ionization wave propagation) in the gas and on the surface. Agreement of the gas levels with available literature is good and agreement between experiment and calculation is good also. Model calculations do not indicate much difference between the gas alone versus the surface levels. Experiments have identified differences in velocity between streamers on the surface and in the gas alone (the surface values being larger).

Hodge, Keith Conquest; Warne, Larry Kevin; Jorgenson, Roy Eberhardt; Wallace, Zachariah Red; Lehr, Jane Marie

2010-01-01T23:59:59.000Z

52

Replication of high density optical disc using injection mold with MEMS heater  

Science Conference Proceedings (OSTI)

In this study, an injection mold equipped with a MEMS heater was designed and constructed to raise the stamper surface temperature over the glass transition temperature during the filling stage of the injection molding. First, high density optical disc ... Keywords: High density optical disc, Injection mold, MEMS RTD sensor, MEMS heater, Solidified layer, Stamper surface temperature

Youngmin Kim; Yong Choi; Shinill Kang

2005-07-01T23:59:59.000Z

53

Street-facing Dwelling Units and Livability: The Impacts of Emerging Building Types in Vancouver's New High-density Residential Neighbourhoods  

E-Print Network (OSTI)

s New High-density Residential Neighbourhoods Elizabeths New High-density Residential Neighbourhoods ELIZABETHbuilding new high-density residential neighbourhoods around

Macdonald, Elizabeth

2006-01-01T23:59:59.000Z

54

Kaon condensation in neutron stars and high density behaviour of nuclear symmetry energy  

E-Print Network (OSTI)

We study the influence of a high density behaviour of the nuclear symmetry energy on a kaon condensation in neutron stars. We find that the symmetry energy typical for several realistic nuclear potentials, which decreases at high densities, inhibits kaon condensation for weaker kaon-nucleon couplings. There exists a threshold coupling above which the kaon condensate forms at densities exceeding some critical value. This is in contrast to the case of rising symmetry energy, as e.g. for relativistic mean field models, when the kaon condensate can form for any coupling at a sufficiently high density. Properties of the condensate are also different in both cases.

S. Kubis; M. Kutschera

1999-07-24T23:59:59.000Z

55

Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel  

NLE Websites -- All DOE Office Websites (Extended Search)

Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel Production: Fact Sheet | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Fact Sheets > Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel ... Fact Sheet Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel

56

Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel  

National Nuclear Security Administration (NNSA)

Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel Production: Fact Sheet | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Fact Sheets > Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel ... Fact Sheet Quadrilateral Cooperation on High-density Low-enriched Uranium Fuel

57

Short-Term Probabilistic Forecasts of Ceiling and Visibility Utilizing High-Density Surface Weather Observations  

Science Conference Proceedings (OSTI)

An automated statistical system that utilizes regional high-density surface observations to forecast low ceiling and visibility events in the upper Midwest is presented. The system is based solely upon surface observations as predictors, ...

Stephen M. Leyton; J. Michael Fritsch

2003-10-01T23:59:59.000Z

58

The final stage of gravitational collapse for high density fluid medium  

Science Conference Proceedings (OSTI)

The High density high density fluids can be represented by a stiff matter state equation P={rho} and also by the Hagedorn state equation. The first is constructed using a lagrangian that allows bare nucleons to interact attractively via scalar meson exchange, and repulsively by a more massive vector meson exchange; the second consider that for large mass the spectrum of hadrons grows exponentially, namely {rho}(m) {approx}exp(m/T{sub H}), where T{sub H} is the Hagedorn temperature, resulting the state equation P = P{sub 0}+{rho}{sub 0}ln({rho}/{rho}{sub 0}). We study the gravitational collapse for a high density fluid, considering a Hagedorn state equation in a presence of a vacuum component.

Souza, R. G. [Physics Department , Roraima Federal University, 69304-000 Boa Vista, RR (Brazil); De Campos, M. [Physics Department, Roraima Federal University, 69304-000 Boa Vista, RR (Brazil) and Astronomy Department, Sao Paulo University, 05508-900 Sao Paulo, SP (Brazil)

2013-03-25T23:59:59.000Z

59

Interplay between Spin Polarization and Color Superconductivity in High Density Quark Matter  

E-Print Network (OSTI)

Here, it is suggested that a four-point interaction of the tensor type may lead to spin polarization in quark matter at high density. It is found that the two-flavor superconducting phase and the spin polarized phase correspond to distinct local minima of a certain generalized thermodynamical potential. It follows that the transition from one to the other phase occurs passing through true minima with both a spin polarization and a color superconducting gap. It is shown that the quark spin polarized phase is realized at rather high density, while the two-flavor color superconducting phase is realized at a lower density region.

Y. Tsue; J. da Providencia; C. Providencia; M. Yamamura; H. Bohr

2012-11-27T23:59:59.000Z

60

Atomic Scale Deformation Mechanisms of Amorphous Polyethylene ...  

Science Conference Proceedings (OSTI)

Atomic Scale Deformation Mechanisms of Amorphous Polyethylene under Tensile Loading · Atomistic Predictions of Age Hardening in Al-Cu Alloys.

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

High density phase change data on flexible substrates by thermal curing type nanoimprint lithography  

Science Conference Proceedings (OSTI)

In this study, high density phase change nano-pillar device (Tera-bit per inch^2 data density) was fabricated on flexible substrates by thermal curing type nanoimprint lithography with high throughput at a relatively low temperature (120^oC). Phase change ... Keywords: Flexible nano-device, Nanoimprint lithography, Phase change memory, Phase change nano-pillar device, Tera-bit record

Sung-Hoon Hong; Jun-Ho Jeong; Kang-In Kim; Heon Lee

2011-08-01T23:59:59.000Z

62

Device and method for electron beam heating of a high density plasma  

DOE Patents (OSTI)

A device and method for relativistic electron beam heating of a high density plasma in a small localized region. A relativistic electron beam generator produces a high voltage electron beam which propagates along a vacuum drift tube and is modulated to initiate electron bunching within the beam. The beam is then directed through a low density gas chamber which provides isolation between the vacuum modulator and the relativistic electron beam target. The relativistic beam is then applied to a high density target plasma which typically comprises DT, DD, hydrogen boron or similar thermonuclear gas at a density of 10.sup.17 to 10.sup.20 electrons per cubic centimeter. The target plasma is ionized prior to application of the electron beam by means of a laser or other preionization source. Utilizing a relativistic electron beam with an individual particle energy exceeding 3 MeV, classical scattering by relativistic electrons passing through isolation foils is negligible. As a result, relativistic streaming instabilities are initiated within the high density target plasma causing the relativistic electron beam to efficiently deposit its energy into a small localized region within the high density plasma target.

Thode, Lester E. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

63

Argonne CNM Highlight: High density, high-aspect-ratio precision polyimide  

NLE Websites -- All DOE Office Websites (Extended Search)

High density, high-aspect-ratio precision polyimide nanofilters High density, high-aspect-ratio precision polyimide nanofilters Polyimide Nanofilter SEM of a polyimide film with holes ~250 nm in diameter and ~10 µm deep. The cross-sectional cut of the channels in the front are made visible by focused ion-beam milling. Collaborative users from Creatv MicroTech, Inc. and Los Alamos National Laboratory, working with CNM's Nanofabrication & Devices Group, have demonstrated a novel fabrication process that produces high-porosity polymer nanofilters with smooth, uniform. and straight pores and high aspect ratios. Nanofilters have a wide range of applications for various size-exclusion-based separations in bioseparation and nanomedicine, such as laboratory assays, removing bacteria and viruses, drug delivery devices,

64

Lattice Boltzmann Method for Multiphase Flows with High Density and Viscosity Ratios  

NLE Websites -- All DOE Office Websites (Extended Search)

Lattice Boltzmann Method for Multiphase Flows with High Density and Viscosity Ratios Lattice Boltzmann Method for Multiphase Flows with High Density and Viscosity Ratios Seckin Gokaltun, Dwayne McDaniel and David Roelant Florida International University, Miami, FL Background As a result of atomic weapons production, millions of gallons of radioactive waste was generated and stored in underground tanks at various U.S. Department of Energy sites. Department of Energy is currently in the process of transferring the waste from single shell tanks to double shell tanks. Various waste retrieval and processing methods are employed during the transfer of the waste. One such method, pulsed-air mixing, involves injection of discrete pulses of compressed air or inert gas at the bottom of the tank to produce large bubbles that rise due to buoyancy and mix the waste in the tank

65

Equation-of-state for fluids at high densities-hydrogen isotope measurements and thermodynamic derivations  

DOE Green Energy (OSTI)

Hydrogen isotopes play an important role in energy technologies, in particular, the compression to high densities for initiation of controlled thermonuclear fusion energy. At high densities the properties of the compressed hydrogen isotopes depart drastically from ideal thermodynamic predictions. The measurement of accurate data including the author's own recent measurements of n-H/sub 2/ and n-D/sub 2/ in the range 75 to 300 K and 0.2 to 2.0 GPa (2 to 20 kbar) is reviewed. An equation-of-state of the Benedict type is fit to these data with a double-process least-squares computer program. The results are reviewed and compared with existing data and with a variety of theoretical work reported for fluid hydrogens. A new heuristic correlation is presented for simplicity in predicting volumes and sound velocity at high pressures. 9 figures, 1 table.

Liebenberg, D.H.; Mills, R.L.; Bronson, J.C.

1977-01-01T23:59:59.000Z

66

Short-range tensor interaction and high-density nuclear symmetry energy  

E-Print Network (OSTI)

Effects of the short-range tensor interaction on the density-dependence of nuclear symmetry energy are examined by applying an approximate expression for the second-order tensor contribution to the symmetry energy derived earlier by G.E. Brown and R. Machleidt. It is found that the uncertainty in the short-range tensor force leads directly to a divergent high-density behavior of the nuclear symmetry energy.

Li, Ang

2011-01-01T23:59:59.000Z

67

HIGH-DENSITY MOLECULAR GAS PROPERTIES OF THE STARBURST GALAXY NGC 1614 REVEALED WITH ALMA  

Science Conference Proceedings (OSTI)

We present the results of HCN/HCO{sup +}/HNC J = 4-3 transition line observations of the nearby starburst galaxy NGC 1614, obtained with ALMA Cycle 0. We find that high density molecular gas traced with these lines shows a velocity structure such that the northern (southern) side of the nucleus is redshifted (blueshifted) with respect to the nuclear velocity of this galaxy. The redshifted and blueshifted emission peaks are offset by {approx}0.''6 at the northern and southern sides of the nucleus, respectively. At these offset positions, observations at infrared >3 {mu}m indicate the presence of active dusty starbursts, supporting the picture that high-density molecular gas is the site of active starbursts. The enclosed dynamical mass within the central {approx}2'' in radius, derived from the dynamics of the high-density molecular gas, is {approx}10{sup 9} M{sub Sun }, which is similar to previous estimates. Finally, the HCN emission is weaker than HCO{sup +} but stronger than HNC for J = 4-3 for all starburst regions of NGC 1614, as seen for J = 1-0 transition lines in starburst-dominated galaxies.

Imanishi, Masatoshi [Subaru Telescope, 650 North A'ohoku Place, Hilo, HI 96720 (United States); Nakanishi, Kouichiro, E-mail: masa.imanishi@nao.ac.jp [Joint ALMA Observatory, Alonso de Cordova 3107, Vitacura 763-0355, Santiago (Chile)

2013-09-15T23:59:59.000Z

68

Low temperature high density Si3N4 MIM capacitor technology for MMMIC and RF-MEMs applications  

Science Conference Proceedings (OSTI)

In this work, a novel, high quality, high-density, deposited at room temperature ultra thin 5 nm Si3N4 metal insulator metal (MIM) capacitor process for monolithic millimetre-wave integrated circuit (MMMIC) applications ... Keywords: RF MEMs, RF MIM capacitors, dielectric films, high density capacitors, room temperature ultra thin silicon nitride films metal insulator metal capacitors

K. Elgaid; H. Zhou; C. D. W. Wilkinson; I. G. Thayne

2004-06-01T23:59:59.000Z

69

A Novel VLSI Technology to Manufacture High-Density Thermoelectric Cooling Devices  

E-Print Network (OSTI)

This paper describes a novel integrated circuit technology to manufacture high-density thermoelectric devices on a semiconductor wafer. With no moving parts, a thermoelectric cooler operates quietly, allows cooling below ambient temperature, and may be used for temperature control or heating if the direction of current flow is reversed. By using a monolithic process to increase the number of thermoelectric couples, the proposed solid-state cooling technology can be combined with traditional air cooling, liquid cooling, and phase-change cooling to yield greater heat flux and provide better cooling capability.

H. Chen; L. Hsu; X. Wei

2008-01-07T23:59:59.000Z

70

A Microelectromechanical High-Density Energy Storage/Rapid Release System  

DOE Green Energy (OSTI)

One highly desirable characteristic of electrostatically driven microelectromechanical systems (MEMS) is that they consume very little power. The corresponding drawback is that the force they produce may be inadequate for many applications. It has previously been demonstrated that gear reduction units or microtransmissions can substantially increase the torque generated by microengines. Operating speed, however, is also reduced by the transmission gear ratio. Some applications require both high speed and high force. If this output is only required for a limited period of time, then energy could be stored in a mechanical system and rapidly released upon demand. We have designed, fabricated, and demonstrated a high-density energy storage/rapid release system that accomplishes this task. Built using a 5-level surface micromachining technology, the assembly closely resembles a medieval crossbow. Energy releases on the order of tens of nanojoules have already been demonstrated, and significantly higher energy systems are under development.

Rodgers, M. Steven; Allen, Jim J.; Meeks, Kent D.; Jensen, Brian D.; Miller, Sam L.

1999-07-21T23:59:59.000Z

71

A Model for the Origin of High Density in Loop-top X-ray Sources  

E-Print Network (OSTI)

Super-hot looptop sources, detected in some large solar flares, are compact sources of HXR emission with spectra matching thermal electron populations exceeding 30 megakelvins. High observed emission measure, as well as inference of electron thermalization within the small source region, both provide evidence of high densities at the looptop; typically more than an order of magnitude above ambient. Where some investigators have suggested such density enhancement results from a rapid enhancement in the magnetic field strength, we propose an alternative model, based on Petschek reconnection, whereby looptop plasma is heated and compressed by slow magnetosonic shocks generated self-consistently through flux retraction following reconnection. Under steady conditions such shocks can enhance density by no more than a factor of four. These steady shock relations (Rankine-Hugoniot relations) turn out to be inapplicable to Petschek's model owing to transient effects of thermal conduction. The actual density enhancemen...

Longcope, D W

2011-01-01T23:59:59.000Z

72

High Density Hydrogen Storage System Demonstration Using NaAlH4 Based Complex Compound Hydrides  

DOE Green Energy (OSTI)

This final report describes the motivations, activities and results of the hydrogen storage independent project "High Density Hydrogen Storage System Demonstration Using NaAlH4 Based Complex Compound Hydrides" performed by the United Technologies Research Center under the Department of Energy Hydrogen Program, contract # DE-FC36-02AL67610. The objectives of the project were to identify and address the key systems technologies associated with applying complex hydride materials, particularly ones which differ from those for conventional metal hydride based storage. This involved the design, fabrication and testing of two prototype systems based on the hydrogen storage material NaAlH4. Safety testing, catalysis studies, heat exchanger optimization, reaction kinetics modeling, thermochemical finite element analysis, powder densification development and material neutralization were elements included in the effort.

Daniel A. Mosher; Xia Tang; Ronald J. Brown; Sarah Arsenault; Salvatore Saitta; Bruce L. Laube; Robert H. Dold; Donald L. Anton

2007-07-27T23:59:59.000Z

73

Process and system for producing high-density pellets from a gaseous medium  

DOE Patents (OSTI)

A process and system for producing pellets of high density carbon dioxide or other gases utilize a chamber containing a plurality of cell-like freezing compartments within which ice is to be formed. A gas desired to be frozen into ice is introduced into the chamber while the internal pressure of the chamber is maintained at a level which is below the equilibrium triple pressure of the gas. The temperature of the freezing compartments is lowered to a temperature which is below the equilibrium vapor pressure temperature of the gas at the chamber pressure so that the gas condenses into ice within the compartments. The temperature of the freezing compartments is thereafter raised so that the ice is thereby released from and falls out of the compartments as pellets for collection.

Foster, Christopher A. (Clinton, TN)

1999-01-01T23:59:59.000Z

74

Behavior of a plasma in a high-density gas-embedded Z-pinch configuration  

Science Conference Proceedings (OSTI)

The theoretical analysis of a high density Z-pinch (HDZP) begins with an examination of the steady state energy balance between ohmic heating and bremsstrahlung radiation losses for a plasma column in pressure equilibrium. The model is then expanded to include the time-varying internal energy and results in a quasi-equilibrium prescription for the load current through a constant radius plasma channel. This set of current waveforms is useful in the design of experimental systems. The behavior of a plasma for physically realizable conditions is first examined by allowing adiabatic changes in the column radius. A more complete model is then developed by incorporating inertial effects into the momentum equation, and the resultant global MHD computational model is compared with more sophisticated, and costly, one- and two-dimensional computer simulations. These comparisons demonstrate the advantages of the global MHD description over previously developed zero-dimensional models.

Shlachter, J.S.

1982-05-01T23:59:59.000Z

75

Thermodynamics and Structural Properties of the High Density Gaussian Core Model  

E-Print Network (OSTI)

We numerically study thermodynamic and structural properties of the one-component Gaussian core model (GCM) at very high densities. The solid-fluid phase boundary is carefully determined. We find that the density dependence of both the freezing and melting temperatures obey the asymptotic relation, $\\log T_f$, $\\log T_m \\propto -\\rho^{2/3}$, where $\\rho$ is the number density, which is consistent with Stillinger's conjecture. Thermodynamic quantities such as the energy and pressure and the structural functions such as the static structure factor are also investigated in the fluid phase for a wide range of temperature above the phase boundary. We compare the numerical results with the prediction of the liquid theory with the random phase approximation (RPA). At high temperatures, the results are in almost perfect agreement with RPA for a wide range of density, as it has been already shown in the previous studies. In the low temperature regime close to the phase boundary line, although RPA fails to describe the structure factors and the radial distribution functions at the length scales of the interparticle distance, it successfully predicts their behaviors at shorter length scales. RPA also predicts thermodynamic quantities such as the energy, pressure, and the temperature at which the thermal expansion coefficient becomes negative, almost perfectly. Striking ability of RPA to predict thermodynamic quantities even at high densities and low temperatures is understood in terms of the decoupling of the length scales which dictate thermodynamic quantities from the interparticle distance which dominates the peak structures of the static structure factor due to the softness of the Gaussian core potential.

Atsushi Ikeda; Kunimasa Miyazaki

2011-04-18T23:59:59.000Z

76

Radioprotective effect of polyethylene glycol  

SciTech Connect

Polyethylene glycol of molecular weight 400 (PEG-400) had a radioprotective effect of about 20% against lethality when given ip 20 min prior to single or fractionated X-ray doses to the head and neck. Dose modification factors (DMF) based on LD50/15 values ranged from 1.14 to 1.24. A similar DMF of 1.12 based on LD50/30 values was obtained using single doses of whole-body X irradiation. Mice given head and neck irradiation had significantly reduced rectal temperatures (31.3 +/- 3.0/sup 0/C) 9 days post irradiation compared with unirradiated controls (35.4 +/- 0.6/sup 0/C). No such reduction was observed when PEG-400 was given with radiation (36.3 +/- 0.9/sup 0/C). PEG-400 also lessened, but not significantly, the frequency of shivering in irradiated animals. Histopathologic examination of the oral structures demonstrated only marginal protection by PEG-400. Estimation of the alpha/beta ratio from LD50 data on head and neck-irradiated mice yielded values of 4.4 +/- 1.9 (95% confidence limits) Gy without PEG-400 and 7.9 +/- 1.4 Gy with PEG-400. Since it is a non-thiol radioprotector, PEG-400 may be more useful when combined with more conventional thiol-containing radioprotectors.

Shaeffer, J.; Schellenberg, K.A.; Seymore, C.H.; Schultheiss, T.E.; el-Mahdi, A.M.

1986-07-01T23:59:59.000Z

77

High density quark matter in the Nambu-Jona-Lasinio model with dimensional versus cutoff regularization  

SciTech Connect

We investigate color superconducting phase at high density in the extended Nambu-Jona-Lasinio model for two-flavor quarks. Because of the nonrenormalizability of the model, physical observables may depend on the regularization procedure; that is why we apply two types of regularization, the cutoff and the dimensional one to evaluate the phase structure, the equation of state, and the relationship between the mass and the radius of a dense star. To obtain the phase structure we evaluate the minimum of the effective potential at finite temperature and chemical potential. The stress tensor is calculated to derive the equation of state. Solving the Tolman-Oppenheimer-Volkoff equation, we show the relationship between the mass and the radius of a dense star. The dependence on the regularization is found not to be small, interestingly. The dimensional regularization predicts color superconductivity phase at rather large values of {mu} (in agreement with perturbative QCD in contrast to the cutoff regularization), in the larger temperature interval, the existence of heavier and larger quark stars.

Fujihara, T.; Kimura, D.; Inagaki, T.; Kvinikhidze, A. [Department of Physics, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Information Media Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8521 (Japan); A. Razmadze Mathematical Institute of Georgian Academy of Sciences, M. Alexidze Str. 1, 380093 Tbilisi (Georgia)

2009-05-01T23:59:59.000Z

78

DEGAS 2 Neutral Transport Modeling of High Density, Low Temperature Plasmas  

E-Print Network (OSTI)

Neutral transport in the high density, low temperature plasma regime is examined using the degas 2 Monte Carlo neutral transport code. Degas 2 is shown to agree with an analytic fluid neutral model valid in this regime as long as the grid cell spacing is less than twice the neutral mean-free path. Using new atomic physics data provided by the collisional radiative code cramd, degas 2 is applied to a detached Alcator C-Mod discharge. A model plasma with electron temperature # 1 eV along detached flux tubes, between the target and the ionization front, is used to demonstrate that recombination is essential to matching the experimental data. With the cramd data, # 20% of the total recombination is due to molecular activated recombination. # Massachusetts Institute of Technology , Plasma Fusion Center, 167 Albany Street, Cambridge, MA 02139, USA + Also at I. V. Kurchatov Institute of Atomic Energy 1 Kurchatov Sq., Moscow 123098, Russia # Presently at McKinsey & Company, Inc., London...

D. P. Stotler; A. Yu. Pigarov; C. F. F. Karney; S. I. Krasheninnikov; B. LaBombard; B. Lipschultz; G. M. McCracken; A. Niemczewski; J. A. Snipes; J. L. Terry; R. A. Vesey

1997-01-01T23:59:59.000Z

79

High density array fabrication and readout method for a fiber optic biosensor  

DOE Patents (OSTI)

The invention relates to the fabrication and use of biosensors comprising a plurality of optical fibers each fiber having attached to its "sensor end" biological "binding partners" (molecules that specifically bind other molecules to form a binding complex such as antibody-antigen, lectin-carbohydrate, nucleic acid-nucleic acid, biotin-avidin, etc.). The biosensor preferably bears two or more different species of biological binding partner. The sensor is fabricated by providing a plurality of groups of optical fibers. Each group is treated as a batch to attach a different species of biological binding partner to the sensor ends of the fibers comprising that bundle. Each fiber, or group of fibers within a bundle, may be uniquely identified so that the fibers, or group of fibers, when later combined in an array of different fibers, can be discretely addressed. Fibers or groups of fibers are then selected and discretely separated from different bundles. The discretely separated fibers are then combined at their sensor ends to produce a high density sensor array of fibers capable of assaying simultaneously the binding of components of a test sample to the various binding partners on the different fibers of the sensor array. The transmission ends of the optical fibers are then discretely addressed to detectors--such as a multiplicity of optical sensors. An optical signal, produced by binding of the binding partner to its substrate to form a binding complex, is conducted through the optical fiber or group of fibers to a detector for each discrete test. By examining the addressed transmission ends of fibers, or groups of fibers, the addressed transmission ends can transmit unique patterns assisting in rapid sample identification by the sensor.

Pinkel, Daniel (Walnut Creek, CA); Gray, Joe (San Francisco, CA); Albertson, Donna G. (Lafayette, CA)

2002-01-01T23:59:59.000Z

80

High density array fabrication and readout method for a fiber optic biosensor  

DOE Patents (OSTI)

The invention relates to the fabrication and use of biosensors comprising a plurality of optical fibers each fiber having attached to its "sensor end" biological "binding partners" (molecules that specifically bind other molecules to form a binding complex such as antibody-antigen, lectin-carbohydrate, nucleic acid-nucleic acid, biotin-avidin, etc.). The biosensor preferably bears two or more different species of biological binding partner. The sensor is fabricated by providing a plurality of groups of optical fibers. Each group is treated as a batch to attach a different species of biological binding partner to the sensor ends of the fibers comprising that bundle. Each fiber, or group of fibers within a bundle, may be uniquely identified so that the fibers, or group of fibers, when later combined in an array of different fibers, can be discretely addressed. Fibers or groups of fibers are then selected and discretely separated from different bundles. The discretely separated fibers are then combined at their sensor ends to produce a high density sensor array of fibers capable of assaying simultaneously the binding of components of a test sample to the various binding partners on the different fibers of the sensor array. The transmission ends of the optical fibers are then discretely addressed to detectors--such as a multiplicity of optical sensors. An optical signal, produced by binding of the binding partner to its substrate to form a binding complex, is conducted through the optical fiber or group of fibers to a detector for each discrete test. By examining the addressed transmission ends of fibers, or groups of fibers, the addressed transmission ends can transmit unique patterns assisting in rapid sample identification by the sensor.

Pinkel, Daniel (Walnut Creek, CA); Gray, Joe (San Francisco, CA); Albertson, Donna G. (Lafayette, CA)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

High-density organic light emitting diodes by nanoimprint technology Krutarth Trivedi, Caleb Nelson, Li Tao, Mathew Goeckner, Walter Hua)  

E-Print Network (OSTI)

High-density organic light emitting diodes by nanoimprint technology Krutarth Trivedi, Caleb Nelson sources. Despite the considerable development of inorganic semiconductor based light emitting diodes of miniaturization to nanoscale. Organic light emitting diode (OLED) technology is immune to quantum confinement

Hu, Wenchuang "Walter"

82

Device and method for relativistic electron beam heating of a high-density plasma to drive fast liners  

DOE Patents (OSTI)

A device and method for relativistic electron beam heating of a high-density plasma in a small localized region. A relativistic electron beam generator or accelerator produces a high-voltage electron beam which propagates along a vacuum drift tube and is modulated to initiate electron bunching within the beam. The beam is then directed through a low-density gas chamber which provides isolation between the vacuum modulator and the relativistic electron beam target. The relativistic beam is then applied to a high-density target plasma which typically comprises DT, DD, hydrogen boron or similar thermonuclear gas at a density of 10.sup.17 to 10.sup.20 electrons per cubic centimeter. The target gas is ionized prior to application of the electron beam by means of a laser or other preionization source to form a plasma. Utilizing a relativistic electron beam with an individual particle energy exceeding 3 MeV, classical scattering by relativistic electrons passing through isolation foils is negligible. As a result, relativistic streaming instabilities are initiated within the high-density target plasma causing the relativistic electron beam to efficiently deposit its energy and momentum into a small localized region of the high-density plasma target. Fast liners disposed in the high-density target plasma are explosively or ablatively driven to implosion by a heated annular plasma surrounding the fast liner which is generated by an annular relativistic electron beam. An azimuthal magnetic field produced by axial current flow in the annular plasma, causes the energy in the heated annular plasma to converge on the fast liner.

Thode, Lester E. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

83

Development of critical surface diagnostic based on the ion acoustic decay instability in laser produced high density plasma  

SciTech Connect

We have developed a large angle, UV collective Thomson scattering (CTS) diagnostic for high density, hot plasma relevant to laser fusion. The CTS measured the basic parameters of the plasma waves (frequency, wave number), or the spectral density function for selected wave vectors of plasma waves, which were excited by the IADI (ion acoustic parametric decay instability). It is a good diagnostic tool for a local electron temperature measurement. The electron temperature was estimated by measuring either ion acoustic wave or electron plasma wave in the laser intensity window of 1high density plasma.

Mizuno, K.; DeGroot, J.S.; Drake, R.P.; Seka, W.; Craxton, R.S.; Estabrook, K.G.

1994-12-31T23:59:59.000Z

84

Integrating domain knowledge with statistical and data mining methods for high-density genomic SNP disease association analysis  

Science Conference Proceedings (OSTI)

Genome-wide association studies can help identify multi-gene contributions to disease. As the number of high-density genomic markers tested increases, however, so does the number of loci associated with disease by chance. Performing a brute-force test ... Keywords: Data integration, Data mining, False discovery rate (FDR), Genome-wide association (GWA), Pathway-based disease association, Single nucleotide polymorphisms (SNP)

Valentin Dinu; Hongyu Zhao; Perry L. Miller

2007-12-01T23:59:59.000Z

85

The use of electrochemical sensors for monitoring urban air quality in low-cost, high-density networks.  

E-Print Network (OSTI)

electrolyte reservoirs for increased long-term baseline stability, and larger integral batteries allowing operation for in excess of 3 months without intervention. In this case sensors were sealed with rubber O-rings on the bottom of the enclosure behind a... The use of electrochemical sensors for monitoring urban air quality in low-cost, high-density networks. M. I. Mead1*, O.A.M. Popoola1, G. B. Stewart1, P. Landshoff3, M. Calleja2, M. Hayes2, J. J. Baldovi1, T. F. Hodgson1, M. W. McLeod1, J. Dicks4...

Mead, M I; Popoola, O A M; Stewart, G B; Landshoff, P; Calleja, M; Hayes, M; Baldovi, J J; Hodgson, T F; McLeod, M W; Dicks, J; Lewis, A; Cohen, J; Baron, R; Saffell, J R; Jones, R L

86

A digital miniature x-ray tube with a high-density triode carbon nanotube field emitter  

Science Conference Proceedings (OSTI)

We have fabricated a digital miniature x-ray tube (6 mm in diameter and 32 mm in length) with a high-density triode carbon nanotube (CNT) field emitter for special x-ray applications. The triode CNT emitter was densely formed within a diameter of below 4 mm with the focusing-functional gate. The brazing process enables us to obtain and maintain a desired vacuum level for the reliable electron emission from the CNT emitters after the vacuum packaging. The miniature x-ray tube exhibited a stable and reliable operation over 250 h in a pulse mode at an anode voltage of above 25 kV.

Jeong, Jin-Woo; Kang, Jun-Tae; Choi, Sungyoul [Nano Electron-source Creative Research Center, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700 (Korea, Republic of)] [Nano Electron-source Creative Research Center, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700 (Korea, Republic of); Kim, Jae-Woo; Song, Yoon-Ho [Nano Electron-source Creative Research Center, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700 (Korea, Republic of) [Nano Electron-source Creative Research Center, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700 (Korea, Republic of); School of Advanced Device Engineering, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 305-350 (Korea, Republic of); Ahn, Seungjoon [Nano Electron-source Creative Research Center, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700 (Korea, Republic of) [Nano Electron-source Creative Research Center, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700 (Korea, Republic of); Department of Information Display, Sun Moon University, Kalsan-ri, Tangjeong-myoon, Asan-si, Chungnam 336-708 (Korea, Republic of)

2013-01-14T23:59:59.000Z

87

Plant Support Engineering: Innovative Technology Solutions Assessment  

Science Conference Proceedings (OSTI)

This project was established to look at opportunities to better employ new or alternative technologies as well as means to resolve obsolescence problems. For example, better monitoring or diagnostic equipment might be engaged to improve equipment reliability and minimize work-hours. Likewise, use of alternative technologies might be a great improvement over currently installed equipmentfor example, using high density polyethylene (HDPE) piping to replace carbon steel pipe damaged due to corrosion. Analog...

2007-03-26T23:59:59.000Z

88

Insight into Clustering in Poly(ethylene oxide) Solutions  

Science Conference Proceedings (OSTI)

... Introduction Poly(ethylene oxide) is one of the most ... other systems such as polyelectrolyte solutions, clay dispersions, living ... J. Colloid Interface Sci. ...

2011-02-28T23:59:59.000Z

89

Patterned functional carbon fibers from polyethylene  

SciTech Connect

Patterned, continuous carbon fibers with controlled surface geometry were produced from a novel melt-processible carbon precursor. This portends the use of a unique technique to produce such technologically innovative fibers in large volume for important applications. The novelties of this technique include ease of designing and fabricating fibers with customized surface contour, the ability to manipulate filament diameter from submicron scale to a couple of orders of magnitude larger scale, and the amenable porosity gradient across the carbon wall by diffusion controlled functionalization of precursor. The geometry of fiber cross-section was tailored by using bicomponent melt-spinning with shaped dies and controlling the melt-processing of the precursor polymer. Circular, trilobal, gear-shaped hollow fibers, and solid star-shaped carbon fibers of 0.5 - 20 um diameters, either in self-assembled bundle form, or non-bonded loose filament form, were produced by carbonizing functionalized-polyethylene fibers. Prior to carbonization, melt-spun fibers were converted to a char-forming mass by optimizing the sulfonation on polyethylene macromolecules. The fibers exhibited distinctly ordered carbon morphologies at the outside skin compared to the inner surface or fiber core. Such order in carbon microstructure can be further tuned by altering processing parameters. Partially sulfonated polyethylene-derived hollow carbon fibers exhibit 2-10 fold surface area (50-500 m2/g) compared to the solid fibers (10-25 m2/g) with pore sizes closer to the inside diameter of the filaments larger than the sizes on the outer layer. These specially functionalized carbon fibers hold promise for extraordinary performance improvements when used, for example, as composite reinforcements, catalyst support media, membranes for gas separation, CO2 sorbents, and active electrodes and current collectors for energy storage applications.

Hunt, Marcus A [ORNL; Saito, Tomonori [ORNL; Brown, Rebecca H [ORNL; Kumbhar, Amar S [University of North Carolina, Chapel Hill; Naskar, Amit K [ORNL

2012-01-01T23:59:59.000Z

90

High density photovoltaic  

DOE Green Energy (OSTI)

Photovoltaic technology can directly generate high voltages in a solid state material through the series interconnect of many photovoltaic diodes. We are investigating the feasibility of developing an electrically isolated, high-voltage power supply using miniature photovoltaic devices that convert optical energy to electrical energy.

Haigh, R.E.; Jacobson, G.F.; Wojtczuk, S. [Spire Corp., Bedford, MA (United States)

1997-10-14T23:59:59.000Z

91

HIGH DENSITY SLAG CONCRETE  

SciTech Connect

Test results are presented that show that a strong concrete weighing approximately 185 lb/ft/sup 3/ can be made using water, waste lead slag, and Ciment Fondu. Feasibility, materials, mortar tests, concrete tests, and Ciment Fondu concretes are discussed. A 24-in.-thick concrete shield wall would have to be increased in thickness by 5 in. if slag concrete is used in place of barytes or magnetite concrete. On a pound-for-pound basis, the waste lead slag concrete materials were 30% cheaper than barytes and magnetite concrete materials. (M.C.G.)

Northup, T.E.

1963-08-01T23:59:59.000Z

92

Production of high density fuel through low temperature devolatilization of fossil fuels with hydrogen and iron oxides  

DOE Patents (OSTI)

A method is provided for producing high-energy high-density fuels and valuable co-products from fossil fuel sources which comprises the low temperature devolatilization of a fossil fuel such as coal in a moving fluid-bed reactor at a temperature of about 450-650C in the presence of hydrogen and iron oxides. The method is advantageous in that high quality liquid fuels are obtained in addition to valuable co-products such as elemental iron, elemental sulfur and carbon black, and the process is carried out efficiently with a large number of recyclable steps. In addition, the hydropyrolysis of the present invention can produce a highly reactive low-sulfur char which is convertible into a slurry fuel. 1 fig.

Khan, M.R.

1990-01-29T23:59:59.000Z

93

Collective renovation : case study on the public / private relationship in high-density low-rise residential areas of central Tokyo  

E-Print Network (OSTI)

This thesis starts with the interest in the undefined open spaces of high-density low-rise (HDLR) residential areas in Tokyo. In these spaces, one can witness numerous examples of overlapping public and private uses. For ...

Mizuguchi, Saki

2012-01-01T23:59:59.000Z

94

Development of plastic heat exchangers for ocean thermal energy conversion. Final report, August 1976--December 1978  

DOE Green Energy (OSTI)

Materials and processes have been selected and design information obtained for plastic ocean thermal energy conversion (OTEC) heat exchangers as the result of a program comprising five types of laboratory experiments. Tests to evaluate the chemical resistance of seven commercially available thermoplastics to sea water and several possible working fluids were conducted with emphasis placed on compatibility with ammonia. Environmental rupture tests involving exposure of stressed specimens to sea water or liquid ammonia indicated that the high density polyethylene (HDPE) is the best suited candidate and produced an extrapolated 100,000 hour failure stress of 1060 psi for HDPE. Long term durability tests of extruded HDPE plate-tube panel confirmed that plastic heat transfer surface is mechanically reliable in an OTEC environment. Thermal conductivity measurements of acetylene black filled HDPE indicated that conductivity may be increased by 50% with a 35% by weight filler loading. The permeability coefficient measured for liquid ammonia through HDPE was higher than previous estimates. Test showed that the rate can be significantly reduced by sulfonation of HDPE. A review of biofouling mechanisms revealed that the permeable nature of the plastic heat exchanger surface may be used to control primary biofouling form formation by allowing incorporation of non-toxic organic repellents into the plastic. A preliminary design and fabrication development program suggests that construction of an ammonia condenser test unit is feasible using currently available materials and manufacturing techniques.

Hart, G.K.; Lee, C.O.; Latour, S.R.

1979-01-01T23:59:59.000Z

95

Monte Carlo calculations of the effective area and directional response of a polyethylene-moderated neutron counter  

Science Conference Proceedings (OSTI)

Two recent reports on Monte Carlo studies have examined the angular response of a multiple-rod neutron scintillator and the energy response of a moderated {sup 3}He neutron counter. This report extends those studies to provide calculations of the effective area and angular sensitivity of a polyethylene-moderated neutron detector that has multiple {sup 3}He tubes. The results (1) provide a more accurate and general determination of the sensor`s detection efficiency, (2) suggest new techniques for obtaining information about the source direction, and (3) allow evaluation of proposals to improve the high-energy detection efficiency by using the production of (n,2n) neutrons in high-density material added to the moderator.

Not Available

1995-01-01T23:59:59.000Z

96

LDRD ER Final Report: Recreating Planetary Cores in the Laboratory: New Techniques to Extremely High Density States  

DOE Green Energy (OSTI)

An accurate equation of state (EOS) for planetary constituents at extreme conditions is the key to any credible model of planets or low mass stars. However, very few materials have their high pressure (>few Mbar) EOS experimentally validated, and even then, only on the principal Hugoniot. For planetary and stellar interiors, compression occurs from gravitational force so that material states follow a line of isotropic compression (ignoring phase separation) to ultra-high densities. An example of the hydrogen phase space composing Jupiter and one particular Brown Dwarf is shown. At extreme densities, material states are predicted to have quite unearthly properties such as high temperature superconductivity and low temperature fusion. High density experiments on Earth are achieved with either static compression techniques (i.e. diamond anvil cells) or dynamic compression techniques using large laser facilities, gas guns, or explosives. The ultimate goal of this multi-directorate and multi-institutional proposal was to develop techniques that will enable us to understand material states that previously only existed at the core of giant planets, stars, or speculative theories. Our effort was a complete success, meeting all of the objectives set out in our proposals. First we focused on developing accurate Hugoniot techniques to be used for constraining the equation of state at high pressure/temperature. We mapped out an accurate water EOS and measured that the ionic->electronic conduction transition occurs at lower pressures than models predict. These data and their impact are fully described in the first enclosed paper ''The Equation of State and Optical Properties of Water Compressed by Strong Shock Waves.'' Currently models used to construct planetary isentropes are constrained by only the planet radius, outer atmospheric spectroscopy, and space probe gravitational moment and magnetic field data. Thus these data, which provide rigid constraints to these models, will have a significant impact on a broad community of planetary and condensed matter scientists, as well as our fundamental understanding of the giant planets. We then developed and tested precompressed and multiple shock techniques on water. Scientists around the world have teamed with us to conduct these complex and seminal high density experiments which allow access to the extreme core states of giant plants. Double shock experiments using a variety of anvils to compress water to densities higher and temperatures lower than accessible by single shock Hugoniot techniques. First a clear determination of the EOS and optical properties of the anvils needed to be measured. These properties for LiF and A1203 are written up in the second attached article, ''Shock-Induced Transformation of Sapphire and Lithium Fluoride into Semiconducting Liquids.'' An example double shock data record for water is shown. This data is being written up for publication.

Collins, G; Celliers, P; Hicks, D; Cauble, R; Bradley, D; MacKinnon, A; Moon, S; Young, D; Chau, R; Eggert, J; Willi, P; Pasley, J; Jeanloz, R; Lee, K; Bennedetti, R; Koenig, M; Benuzzi-Mounaix, A; Batani, D; Loubeyre, P; Hubbard, W

2003-02-07T23:59:59.000Z

97

High-density PhyloChip profiling of stimulated aquifer microbial communities reveals a complex response to acetate amendment  

Science Conference Proceedings (OSTI)

There is increasing interest in harnessing the functional diversity of indigenous microbial communities to transform and remediate a wide range of environmental contaminants. Understanding the response of communities to stimulation, including flanking taxa, presents important opportunities for optimizing remediation approaches. We used high-density PhyloChip microarray analysis to comprehensively determine community membership and abundance patterns amongst a suite of samples from U(VI) bioremediation experiments. Samples were unstimulated or collected during Fe(III) and sulfate reduction from an acetate-augmented aquifer in Rifle, Colorado, and from laboratory experiments using field-collected materials. Results showed the greatest diversity in abundant SRB lineages was present in naturally-reduced sediment. Desulfuromonadales and Desulfobacterales were consistently identified as the dominant Fe(III)- and sulfate-reducing bacteria (IRB and SRB) throughout acetate amendment experiments. Stimulated communities also exhibited a high degree of functional redundancy amongst enriched flanking members. Not surprisingly, competition for both sulfate and iron was evident amongst abundant taxa, but the distribution and abundance of these ancillary SRB (Peptococcaceae, Desulfovibrionales and Syntrophobacterales), and lineages containing IRB (excluding Desulfobacteraceae) was heterogeneous amongst sample types. Interesting, amongst the most abundant taxa, particularly during sulfate reduction, were Epsilonproteobacteria that perform microaerobic or nitrate-dependant sulfur oxidation, and a number of bacteria other than Geobacteraceae that may enzymatically reduce U(VI). Finally, in depth community probing with PhyloChip determined the efficacy of experimental approaches, notably revealing striking similarity amongst stimulated sediment (from drill cores and in-situ columns) and groundwater communities, and demonstrating that sediment-packed in-situ (down-well) columns served as an ideal method for subsurface biostimulation.

Handley, Kim M.; Wrighton, Kelly E.; Piceno, Y. M.; Anderson, Gary L.; DeSantis, Todd; Williams, Kenneth H.; Wilkins, Michael J.; N'Guessan, A. L.; Peacock, Aaron; Bargar, John R.; Long, Philip E.; Banfield, Jillian F.

2012-06-13T23:59:59.000Z

98

Highly Enriched Uranium Metal Annuli and Cylinders with Polyethylene Reflectors and/or Internal Polyethylene Moderator  

SciTech Connect

A variety of critical experiments were constructed of enriched uranium metal during the 1960s and 1970s at the Oak Ridge Critical Experiments Facility in support of criticality safety operations at the Y-12 Plant. The purposes of these experiments included the evaluation of storage, casting, and handling limits for the Y-12 Plant and providing data for verification of calculation methods and cross-sections for nuclear criticality safety applications. These included solid cylinders of various diameters, annuli of various inner and outer diameters, two and three interacting cylinders of various diameters, and graphite and polyethylene reflected cylinders and annuli. Of the hundreds of delayed critical experiments, experiments of uranium metal annuli with and without polyethylene reflectors and with the central void region either empty or filled with polyethylene were evaluated under ICSBEP Identifier HEU-MET-FAST-076. The outer diameter of the uranium annuli varied from 9 to 15 inches in two-inch increments. In addition, there were uranium metal cylinders with diameters varying from 7 to 15 inches with complete reflection and reflection on one flat surface to simulate floor reflection. Most of the experiments were performed between February 1964 and April 1964. Five partially reflected (reflected on the top only) experiments were assembled in November 1967, but are judged by the evaluators not to be of benchmark quality. Twenty-four of the twenty-five experiments have been determined to have fast spectra. The only exception has a mixed spectrum. Analyses were performed in which uncertainty associated with five different parameters associated with the uranium parts and three associated with the polyethylene parts was evaluated. Included were uranium mass, height, diameter, isotopic content, and impurity content and polyethylene mass, diameter, and impurity content. There were additional uncertainties associated with assembly alignment, support structure, and the value for ßeff. In addition to the idealizations made by the experimenters (removal of a diaphragm), a few simplifications were also made to the benchmark models that resulted in a small bias and additional uncertainty. Simplifications included omission of the support structure, possible surrounding equipment, and the walls, floor, and ceiling of the experimental cell. Bias values that result from these simplifications were determined and associated uncertainty in the bias values were included in the overall uncertainty in benchmark keff values. Bias values ranged from 0.0002 ?k to 0.0093 ?k below the experimental value. Overall uncertainties range from ? 0.0002 to ? 0.0011. Major contributors to the overall uncertainty include uncertainty in the support structure and the polyethylene parts. A comparison of experimental, benchmark-model, and MCNP-model keff values is shown in Figure 1. The experimental keff values are derived from the original reactivities reported by the principal experimentalist. The benchmark-model keff values are the experimental keff values adjusted to account for biases that were introduced by removing the support structure and surroundings. The MCNP-model keff values are simply the values found from MCNP calculations using the benchmark specifications and ENDF/B-VI cross-section data. Figure 1. Comparison of Experimental, Benchmark-Model and MCNP-Model keff value. Calculated results for most of the experiments are

Tyler Sumner; J. Blair Briggs; Leland Montierth

2007-05-01T23:59:59.000Z

99

Production of high-density high-temperature plasma by collapsing small solid-density plasma shell with two ultra-intense laser pulses  

Science Conference Proceedings (OSTI)

Three-dimensional particle-in-cell simulations show that the anisotropic collapse of a plasma microshell by impact of two oppositely directed intense laser pulses can create at the center of the shell cavity a submicron-sized plasma of high density and temperature suitable for generating fusion neutrons.

Xu, H. [National Laboratory for Parallel and Distributed Processing, School of Computer Science, National University of Defense Technology, Changsha 410073 (China); Research Center of Laser Fusion, Chinese Academy of Engineering Physics, Mianyang 621900 (China); Yu Wei [Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China); Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China); Yu, M. Y. [Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China); Institute for Theoretical Physics I, Ruhr University, Bochum D-44780 (Germany); Wong, A. Y. [Department of Physics, University of California, Los Angeles, California 90095 (United States); Sheng, Z. M.; Zhang, J. [Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Murakami, M. [Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan)

2012-04-02T23:59:59.000Z

100

Morphological, rheological and electrochemical studies of Poly(ethylene  

NLE Websites -- All DOE Office Websites (Extended Search)

Morphological, rheological and electrochemical studies of Poly(ethylene Morphological, rheological and electrochemical studies of Poly(ethylene oxide) electrolytes containing fumed silica nanoparticles Title Morphological, rheological and electrochemical studies of Poly(ethylene oxide) electrolytes containing fumed silica nanoparticles Publication Type Journal Article Year of Publication 2004 Authors Xie, Jiangbing, Robert G. Duan, Yong Bong Han, and John B. Kerr Journal Solid State Ionics Volume 175 Pagination 755-758 Keywords composite polymer electrolytes, nanoparticles, poly(ethylene oxide), rheology Abstract In this paper, the rheology and crystallization of composite Poly(ethylene oxide) (PEO) electrolytes were studied by dynamic mechanical analysis, DSC and polarized light microscopy. The effects of fumed silica nanoparticles on the conductivities of the polymer electrolytes at temperatures above and below their melting points were measured and related to their rheology and crystallization behavior, respectively. The electrolyte/electrode interfacial properties and cycling performances of the composite polymer electrolytes in Li/Li cells are also discussed. The measured electrochemical properties were found to depend heavily on the operational environments and sample processing history.

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

SiO2 - polyethylene reflected critical assembly  

SciTech Connect

The Planet universal critical assembly machine was used to perform a series of three critical experiments. This experiment used HEU foils reflected by polyethylene and interleaved with plates of SiO{sub 2} glass and polyethylene. Only the experiment performed using the SiO{sub 2} matrix material is evaluated in this report. The assembly was delayed critical with 33 HEU foils or 17 units (sets of HEU foils). The critical assembly has an intermediate neutron spectrum, with 51.2% of the fissions occurring between 0.625 eV and 100 keV. The calculational results show good agreement with the experimental results.

Brewer, R. W. (Roger W.); Sanchez, R. G. (Rene G.)

2001-01-01T23:59:59.000Z

102

Photoelectrochemical investigation of a poly(ethylene oxide) cell  

SciTech Connect

The photoelectrochemical properties of cells based on the solid polymer electrolyte (SPE) poly(ethylene oxide)/NaSCN with Na2S/S as a redox species are investigated experimentally. The preparation of the SPE is described in detail. Current/voltage curves or voltage/time are shown for cells using p-InP/SPE/conducting-glass, n-GaAs/SPE/conducting-glass, and p-InP/SPE/n-CdS structures. It is concluded that practical cells based on SPE of this type will require increases in the ionic conductivity of poly(ethylene oxide). 13 references.

Sammells, A.F.; Ang, G.P.

1984-03-01T23:59:59.000Z

103

Quaternary 1T-2MTJ Cell Circuit for a High-Density and a High-Throughput Nonvolatile Bit-Serial CAM  

Science Conference Proceedings (OSTI)

A compact quaternary cell circuit using a single MOS transistor and two magnetic tunnel junction devices (1T-2MTJ) is proposed for a high-density nonvolatile bit-serial content-addressable memory (CAM). The use of quaternary CAM-cell structure makes ... Keywords: Low-Power, Compact, Spintronics, Magnetic Tunnel Junction, MTJ, MOS/MTJ-hybrid, Logic-in-Memory, Fine-Grain, Power Gating

Shoun Matsunaga; Takahiro Hanyu

2012-05-01T23:59:59.000Z

104

Polyethylene composites containing a phase change material having a C14 straight chain hydrocarbon  

DOE Patents (OSTI)

A composite useful in thermal energy storage, said composite being formed of a polyethylene matrix having a straight chain alkyl hydrocarbon incorporated therein, said polyethylene being crosslinked to such a degree that said polyethylene matrix is form stable and said polyethylene matrix is capable of absorbing at least 10% by weight of said straight chain alkyl hydrocarbon; the composite is useful in forming pellets or sheets having thermal energy storage characteristics.

Salyer, Ival O. (Dayton, OH)

1987-01-01T23:59:59.000Z

105

Establishment of very uniform gas-flow pattern in the process chamber for microwave-excited high-density plasma by ceramic shower plate  

SciTech Connect

The authors developed a ceramic upper shower plate used in the microwave-excited high-density plasma process equipment incorporating a dual shower-plate structure to establish a very uniform gas-flow pattern in the process chamber. Thousands of very fine gas-injection holes are implemented on this Al{sub 2}O{sub 3} upper shower plate with optimized allocation to establish a uniform gas-flow pattern of plasma-excitation gases and radical-generation gases for generating intended radicals in the plasma-excitation region. The size of these fine holes must be 50 {mu}m or less in diameter and 8 mm or more in length because these holes perform an essential role: They completely avoid the plasma excitation in these fine holes and upper gas-supply regions resulting from the plasma penetration into these regions from excited high-density plasma, even if very high-density plasma greater than 1x10{sup 12} cm{sup -3} is excited just under the ceramic upper shower plate by microwaves supplied from the radial line slot antenna. On the other hand, various process gases, such as material gases for film formations and etching gases, are supplied from the lower shower plate installed in the diffusion plasma region to this very uniform gas-flow pattern region of plasma-excitation gases and radical-generation gases. As a result, the process gases are supplied to the wafer surface in a very effective manner without excess decomposition of those process gas molecules and undesired reaction-product deposition on the inner surface of the process chamber. The process results are improved drastically by introducing the newly developed ceramic upper shower plate. But also, process uniformity on the entire wafer is improved with drastically reducing reaction-product deposition on the inner surface of the process chamber.

Goto, Tetsuya; Inokuchi, Atsutoshi; Ishibashi, Kiyotaka; Yasuda, Seij; Nakanishi, Toshio; Kohno, Masayuki; Okesaku, Masahiro; Sasaki, Masaru; Nozawa, Toshihisa; Hirayama, Masaki; Ohmi, Tadahiro [New Industry Creation Hatchery Center, Tohoku University, Sendai 980-8579 (Japan); Tokyo Electron Ltd., Tokyo 107-6325 (Japan); Tokyo Electron Technology Development Institute, Inc., Hyogo 660-0891 (Japan); New Industry Creation Hatchery Center, Tohoku University, Sendai 980-8579 (Japan); Tokyo Electron AT Ltd., Hyogo 660-0891 (Japan); Hokuriku Seikei Industrial, Co., Ltd., Ishikawa 923-0157 (Japan); Tokyo Electron Technology Development Institute, Inc., Hyogo 660-0891 (Japan); New Industry Creation Hatchery Center, Tohoku University, Sendai 980-8579 (Japan)

2009-07-15T23:59:59.000Z

106

Study of the influence of a strong magnetic field on the composition of nuclear matter at high densities and zero temperature  

Science Conference Proceedings (OSTI)

Magnetars are neutron stars with a strong surface magnetic field. Observations of soft gamma-ray and anomalous X-ray pulsars pointed out that the surface magnetic field of magnetars is equal or even greater than 10{sup 15} G. In this work we study the influence of a strong magnetic field on the composition of nuclear matter at high densities and zero temperature. We describe the matter through a relativistic mean-field model with eight light baryons (baryon octet), electrons, muons and with magnetic field. As output of the numerical calculations, we obtain the relative population of each species of particles as function of baryon density.

Coelho, Eduardo L.; Chiapparini, Marcelo [Instituto de Fisica, Universidade do Estado do Rio de Janeiro, 20559-900, Rio de Janeiro, RJ (Brazil); Bracco, Mirian E. [Faculdade de Tecnologia, Universidade do Estado do Rio de Janeiro, 27537-000, Resende, RJ (Brazil)

2013-03-25T23:59:59.000Z

107

HIGH DENSITY NUCLEAR FUEL COMPOSITION  

DOE Patents (OSTI)

ABS>A nuclear fuel consisting essentially of uranium monocarbide and containing 2.2 to 4.6 wt% carbon, 0.1 to 2.3 wt% oxygen, 0.05 to 2.5 wt% nitrogen, and the balance uranium was developed. The maximum oxygen content was less than one-half the carbon content by weight and the carbon, oxygen, and nitrogen are present as a single phase substituted solid solution of UC, C, O, and N. A method of preparing the fuel composition is described. (AEC)

Litton, F.B.

1962-07-17T23:59:59.000Z

108

Efficient high density train operations  

DOE Patents (OSTI)

The present invention provides methods for preventing low train voltages and managing interference, thereby improving the efficiency, reliability, and passenger comfort associated with commuter trains. An algorithm implementing neural network technology is used to predict low voltages before they occur. Once voltages are predicted, then multiple trains can be controlled to prevent low voltage events. Further, algorithms for managing inference are presented in the present invention. Different types of interference problems are addressed in the present invention such as "Interference. During Acceleration", "Interference Near Station Stops", and "Interference During Delay Recovery." Managing such interference avoids unnecessary brake/acceleration cycles during acceleration, immediately before station stops, and after substantial delays. Algorithms are demonstrated to avoid oscillatory brake/acceleration cycles due to interference and to smooth the trajectories of closely following trains. This is achieved by maintaining sufficient following distances to avoid unnecessary braking/accelerating. These methods generate smooth train trajectories, making for a more comfortable ride, and improve train motor reliability by avoiding unnecessary mode-changes between propulsion and braking. These algorithms can also have a favorable impact on traction power system requirements and energy consumption.

Gordon, Susanna P. (Oakland, CA); Evans, John A. (Hayward, CA)

2001-01-01T23:59:59.000Z

109

Assessment of an ORION-based experimental platform for measuring the opacity of high-temperature and high-density plasma  

SciTech Connect

The following provides an assessment of an experimental platform based on the ORION laser at AWE Aldermasten, England, for measuring the opacity of high-temperature and high-density LTE plasmas. The specific points addressed are (1) the range of electron density and temperature that can be achieved with short-pulse beams alone, as well as (2) by means of compression with a long-pulse beam; (3) the accuracy with which electron density, electron temperature, and absolute emissivity can be measured; (4) the use of pulse shaping to increase the sample density to above solid density; (5) the effect that target materials and target design have on maintaining spatial uniformity of the sample, and (6) the need for additional diagnostics to produce and characterize samples for decisive measurements.

Beiersdorfer, P; Schneider, M; Shepherd, R

2012-06-11T23:59:59.000Z

110

The evaluation of a coal-derived liquid as a feedstock for the production of high-density aviation turbine fuel  

DOE Green Energy (OSTI)

The conversion of coal-derived liquids to transportation fuels has been the subject of many studies sponsored by the US Department of Energy and the US Department of Defense. For the most part, these studies evaluated conventional petroleum processes for the production of specification-grade fuels. Recently, however, the interest of these two departments expanded to include the evaluation of alternate fossil fuels as a feedstock for the production of high-density aviation turbine fuel. In this study, we evaluated five processes for their ability to produce intermediates from a coal-derived liquid for the production of high-density turbine fuel. These processes include acid-base extraction to reduce the heteroatom content of the middle distillate and the atmospheric and vacuum gas oils, solvent dewaxing to reduce the paraffin (alkane) content of the atmospheric and vacuum gas oils, Attapulgus clay treatment to reduce the heteroatom content of the middle distillate, coking to reduce the distillate range of the vacuum gas oil, and hydrogenation to remove heteroatoms and to saturate aromatic rings in the middle distillate and atmospheric gas oil. The chemical and physical properties that the US Air Force considers critical for the development of high-denisty aviation turbine fuel are specific gravity and net heat of combustion. The target minimum values for these properties are a specific gravity of at least 0.85 and a net heat of combustion of at least 130,000 Btu/gal. In addition, the minimum hydrogen content is 13.0 wt %, the maximum freeze point is {minus}53{degrees}F ({minus}47{degrees}C), the maximum amount of aromatics is about 25 to 30 vol %, and the maximum amount of paraffins is 10 vol %. 13 refs., 20 tabs.

Thomas, K.P.; Hunter, D.E.

1989-08-01T23:59:59.000Z

111

Pyrolysis Pathways of Sulfonated Polyethylene, an Alternative Carbon Fiber Precursor  

SciTech Connect

Sulfonated polyethylene is an emerging precursor for the production of carbon fibers. Pyrolysis of sulfonated polyethylene was characterized by thermogravimetric analysis (TGA). n-heptane-4-sulfonic acid (H4S) was selected as a model compound for the study of sulfonated polyethylene. Density functional theory and conventional transition state theory were used to determine the rate constants of pyrolysis for H4S from 300-1000 K. Multiple reaction channels from two different mechanisms were explored: 1) internal five-centered elimination (Ei 5) and 2) radical chain reaction. The pyrolysis of H4S was simulated with kinetic Monte Carlo (kMC) to obtain TGA plots that compared favorably to experiment. We observed that at tem- peratures < 550 K, the radical mechanism was dominant and yielded the trans-alkene, whereas cis-alkene was formed at higher temperatures from the internal elimination. The maximum rates of % mass loss became independent of initial OH radical concentration at 440-480 K. Experimentally, the maximum % mass loss occurred from 440-460 K (heating rate dependent). Activation energies derived from the kMC-simulated TGAs of H4S (26-29 kcal/mol) agreed with experiment for sulfonated polyethylene ( 31 kcal/mol). The simulations revealed that in this region, decomposition of radical HOSO2 became competitive to H abstraction by HOSO2, making OH the carrying radical for the reaction chain. The maximum rate of % mass loss for internal elimination was observed at temperatures > 600 K. Low-scale carbonization utilizes temperatures < 620 K; thus, internal elimination will not be competitive. Ei5 elimination has been studied for sulfoxides and sulfones, but this represents the first study of internal elimination in sulfonic acids. Nonlinear Arrhenius plots were found for all bimolecular reactions. The most significant nonlinear behavior was observed for reactions where the barrier was small. For reactions with low activation barriers, nonlinearity was traced to conflicting trends between the exponential temperature dependence of the energetic term and the temperature dependence of the vibrational partition function of the transitional modes.

Younker, Jarod M [ORNL; Saito, Tomonori [ORNL; Hunt, Marcus A [ORNL; Beste, Ariana [ORNL; Naskar, Amit K [ORNL

2013-01-01T23:59:59.000Z

112

Reduced Water Density in a Poly(ethylene oxide) Brush  

Science Conference Proceedings (OSTI)

A model poly(ethylene oxide) (PEO) brush system, prepared by spreading a poly(ethylene oxide)-poly(n-butyl acrylate) (PEO-PnBA) amphiphilic diblock copolymer onto an air-water interface, was investigated under various grafting density conditions by using the X-ray reflectivity (XR) technique. The overall electron density profiles of the PEO-PnBA monolayer in the direction normal to the air-water interface were determined from the XR data. From this analysis, it was found that inside of the PEO brush, the water density is significantly lower than that of bulk water, in particular, in the region close to the PnBA-water interface. Separate XR measurements with a PnBA homopolymer monolayer confirm that the reduced water density within the PEO-PnBA monolayer is not due to unfavorable contacts between the PnBA surface and water. The above result, therefore, lends support to the notion that PEO chains provide a hydrophobic environment for the surrounding water molecules when they exist as polymer brush chains.

Lee, Hoyoung; Kim, Dae Hwan; Park, Hae-Woong; Mahynski, Nathan A.; Kim, Kyungil; Meron, Mati; Lin, Binhua; Won, You-Yeon (Purdue); (UC)

2012-09-05T23:59:59.000Z

113

Degradation of degradable starch-polyethylene plastics in a compost environment  

Science Conference Proceedings (OSTI)

Degradable plastics have differing degradation rates. Three types of degradation of polyethylene in the starch-polyethylene polymers can occur: chemical degradation, photodegradation, and biological degradation. This study examines all three types of degradation in 11 commercially produced degradable starch-polyethylene bags. Different rates for chemical and photo-degradation were found within a 20 day or an 8-week period. Results indicated that both the 70[degree]C oven and HT-HH film treatments were appropriate methods to evaluate oxidative degradation. In a compost environment, oxygen tension on the surface of the film appears to be the rate-limiting component for both chemical and biological degradation. Levels of starch in all bags was similar, so the prooxidant additive was critical in promoting the oxidative degradation of polyethylene. The Fe-Mn additive displayed the best catalytic activity. This study overall confirms degradation of starch-polyethylene plastics in a natural environment. 17 refs., 6 figs., 2 tabs.

Johnson, K.E.; Pometto, A.L. III; Nikolov, Z.L. (Iowa State Univ., Ames (United States))

1993-04-01T23:59:59.000Z

114

The characterisation of two different degradable polyethylene (PE) sacks  

Science Conference Proceedings (OSTI)

The compostability of two different polyethylene (PE) products on the UK market under open-windrow composting conditions is explored within this paper. Chemical analysis of the PE bags has established their constituents in order to examine how the PE bags have an increased degradability depending on additives. Weight loss of the two different PE products within open-windrow composting conditions was recorded in order to establish the percentage weight loss as an indication of the degradability of the two products and their relative suitability for open-windrow composting. Scanning electron microscopy (SEM) of the PE products over the composting duration established the degradation processes for the PE products within the compost. These analyses concluded that one of the PE product mixes was more degradable than the other. However, neither product completed degraded within the timeframe of 12-14 weeks generally accepted for open-windrow composting in the UK.

Davis, G. [Engineering Management Group, University of Bristol (United Kingdom)]. E-mail: gudavis@cytanet.com.cy

2006-12-15T23:59:59.000Z

115

Temperature-responsive surface-functionalized polyethylene films  

E-Print Network (OSTI)

PE-PEG-Pyrene cooligomers were used to functionalize the surface of polyethylene films via an entrapment process. The resultant films yield a temperature responsive surface-solvent interface when immersed in water. The responsiveness of these films was characterized by fluorescence spectroscopy using pyrene as the fluorophore. Changes in the emission profile of pyrene (11/13) versus temperature displayed an interface micropolarity which was lower at high temperature and higher at low temperature. This suggests a surface-solvent interface in which the PEG oligomers are solvated and extended at low temperatures and collapsed at high temperatures. Repeated heating and cooling cycles (5'C-4 65'C-4 5'C) upon the same sample produced a semi-reversible behavior.

Ponder, Bill C.

1998-01-01T23:59:59.000Z

116

Mesophases in polyethylene, polypropylene, and poly(1-butene)  

Science Conference Proceedings (OSTI)

This paper contains new views about the amorphous and partially ordered phases of the three polymers listed in the title. The discussion is based on information on structure, thermodynamic stability, and large-amplitude molecular motion. Polyethylene is the basic backbone of all alkene polymers, and the other two are the first members of the vinyl polymers which have stereospecifically placed alkyl side chains. Their multiphase structures consist of metastable crystals, mesophases, and surrounding rigid and mobile amorphous fractions. All these phases have sizes ranging from micrometer dimensions down to nanometers. Besides the phase structures, information about the molecular coupling between the phases must be considered. Depending on temperature, the polymer phases can vary from solid (rigid) to liquid (mobile). New knowledge is also gained by cross-comparison of the title polymers. The experimental information was gained from (a) various forms of slow, fast, and temperature-modulated thermal analysis to identify equilibrium and non-equilibrium states, (b) measurement of structure and morphology at various length scales, and (c) tracing of the large-amplitude molecular motion, the kinetics of order/disorder changes, and the liquid/solid transitions (glass transitions). It is shown that much more needs to be known about the various phases and their coupling to characterize a given polymer and to fine-tune its properties for a given application.

Androsch, Rene J [ORNL; Di Lorenzo, Maria [ORNL; Schick, Christoph [Rostock University, Rostock, Germany; Wunderlich, Bernhard {nmn} [ORNL

2010-01-01T23:59:59.000Z

117

Hybrid Polyethylene Glycol Hydrogels for Tissue Engineering Applications  

E-Print Network (OSTI)

Currently, organ transplant procedures are insufficient to address the needs of the number of patients that suffer of organ failure related disease. In the United States alone, only around 19% of the patients are able to get an organ transplant surgery and 25% die while waiting for a suitable donor. Tissue engineering (TE) has emerged as an alternative to organ transplant; thus, the aim of the present study was to validate a poly(ethylene glycol) diacrylate (PEG-DA) hydrogel system as a model for material scaffolding in TE applications. This work explores the influence of scaffold material properties on cell behavior. Specifically, scaffold modulus, mesh size, and biochemical stimuli were characterized and their influence on cell response was analyzed at the biochemical, histological and microenvironmental levels. Three different TE targets were evaluated: vocal fold restoration, vascular grafts and osteochondral applications. Vocal fold fibroblast (VFF) phenotype and extracellular matrix (ECM) production were impacted by initial scaffold mesh size and modulus. The results showed increasing levels of SM-?-actin and collagen production with decreasing initial mesh size/increasing initial modulus, which indicated that VFFs were induced to take an undesirable myofibroblast-like phenotype. In addition, it was possible to preserve VFF phenotype in long-term cultured hydrogels containing high molecular weight hyaluronan (HAHMW). On the other hand, regarding vascular graft applications, smooth muscle cell (SMC) phenotype was enhanced by increasing scaffold mesh size and modulus. Finally, the effect of scaffold inorganic content (siloxane) on rat osteoblasts and mouse mesenchymal stem cells was evaluated. Interestingly, the impact of inorganic content on cell differentiation seemed to be highly dependent on the initial cell state. Specifically, mature osteoblasts underwent transdifferentiation into chondrocyte-like cells with increasing inorganic content. However, Mesenchymal stem cells appeared to be preferentially driven toward osteoblast-like cells with an associated increase in osteocalcin and collagen type I production.

Munoz Pinto, Dany 1981-

2011-05-01T23:59:59.000Z

118

LCA comparison of container systems in municipal solid waste management  

Science Conference Proceedings (OSTI)

The planning and design of integrated municipal solid waste management (MSWM) systems requires accurate environmental impact evaluation of the systems and their components. This research assessed, quantified and compared the environmental impact of the first stage of the most used MSW container systems. The comparison was based on factors such as the volume of the containers, from small bins of 60-80 l to containers of 2400 l, and on the manufactured materials, steel and high-density polyethylene (HDPE). Also, some parameters such as frequency of collections, waste generation, filling percentage and waste container contents, were established to obtain comparable systems. The methodological framework of the analysis was the life cycle assessment (LCA), and the impact assessment method was based on CML 2 baseline 2000. Results indicated that, for the same volume, the collection systems that use HDPE waste containers had more of an impact than those using steel waste containers, in terms of abiotic depletion, global warming, ozone layer depletion, acidification, eutrophication, photochemical oxidation, human toxicity and terrestrial ecotoxicity. Besides, the collection systems using small HDPE bins (60 l or 80 l) had most impact while systems using big steel containers (2400 l) had less impact. Subsequent sensitivity analysis about the parameters established demonstrated that they could change the ultimate environmental impact of each waste container collection system, but that the comparative relationship between systems was similar.

Rives, Jesus, E-mail: Jesus.Rives@uab.ca [SosteniPrA (UAB-IRTA), Institute of Environmental Science and Technology (ICTA), Universitat Autonoma de Barcelona - UAB, 08193 Bellaterra, Barcelona (Spain); Rieradevall, Joan; Gabarrell, Xavier [SosteniPrA (UAB-IRTA), Institute of Environmental Science and Technology (ICTA), Universitat Autonoma de Barcelona - UAB, 08193 Bellaterra, Barcelona (Spain); Department of Chemical Engineering, Universitat Autonoma de Barcelona - UAB, 08193 Bellaterra, Barcelona (Spain)

2010-06-15T23:59:59.000Z

119

Treatment of Wine Distillery Wastewater Using an Anaerobic Moving Bed Biofilm Reactor with Low Density of Polyethylene Support  

Science Conference Proceedings (OSTI)

An anaerobic moving bed biofilm reactor filled with small and low density polyethylene support as biofilm carrier was operated to treat wine distillery wastewater for nearly 8 months. The support packed in the reactor is Bioflow 30 with density 0.92g/cm3 ... Keywords: Anaerobic digestion, moving bed biofilm reactor, low density polyethylene support, wine distillery wastewater

Chai Sheli; Rene Moletta

2010-03-01T23:59:59.000Z

120

Effect of nano-fibers on the stress-strain behavior of semi-crystalline poly(ethylene terephthalate) at different strain rates  

E-Print Network (OSTI)

Uniaxial compression tests were performed on amorphous poly(ethylene terephthalate) (PET), amorphous poly(ethylene terephthalate)- glycol (PETG), semi-crystalline PET, and semicrystalline PET with various amounts of ...

Cohen, Ellann

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Stochastic model of lithium ion conduction in poly,,ethylene oxide... L. Gitelman,1  

E-Print Network (OSTI)

as described above. III. THE CONDUCTIVITY The basic electrochemistry of the lithium ion battery in- volves only the transfer of lithium ions between the two insertion electrodes. Typical lithium ion battery consistsStochastic model of lithium ion conduction in poly,,ethylene oxide... L. Gitelman,1 A. Averbuch,2,a

Averbuch, Amir

122

Characterization of mechanical properties: low-density polyethylene nanocomposite using nanoalumina particle as filler  

Science Conference Proceedings (OSTI)

Nanocomposites based on low-density polyethylene (LDPE), containing 0.5, 1, 2, 3, and 5wt% of nanoalumina, were prepared by melt-mixing at 125°C and hot melt-pressing to thin polymer film at 125°C. To enhance the interfacial interaction between ...

Ching Yern Chee, N. L. Song, Luqman Chuah Abdullah, Thomas S. Y. Choong, Azowa Ibrahim, T. R. Chantara

2012-01-01T23:59:59.000Z

123

High-Density-Infrared Transient Liquid Coatings  

Science Conference Proceedings (OSTI)

Infrared energy is the portion of the electromagnetic spectrum between 0.78 mm ..... that may bring to the market new materials that cannot be produced economically ... For more information, contact C.A. Blue, Oak Ridge National Laboratory, ...

124

Available Technologies: Ultra-High Density Diffraction ...  

The researchers have demonstrated that an extremely high diffraction intensity ... www.lbl.gov/Tech-Transfer/licensing/index ... OF ENERGY • OFFICE OF ...

125

Super-high density laser fusion CTR  

SciTech Connect

From sixth European conference on controlled fusion and plasma physics; Moscow, USSR (30 Jul 1973). A basic discussion of laser-induced fusion is presented. Implosion development and applications are described. Implosion and thermonuclear physics are discussed in some detail along with laser technology, laser fusion reactors, and fusion energy conversion. (MOW)

Thiessen, A.; Zimmerman, G.; Weaver, T.; Emmett, J.; Nuckolls, J.; Wood, L.

1973-09-01T23:59:59.000Z

126

A flexible high-density sensor network  

E-Print Network (OSTI)

This thesis explores building and deploying a scalable electronic sensate skin that was designed as a dense sensor network. Our skin is built from small (1" x 1") rigid circuit boards attached to their neighbors with ...

Mistree, Behram Farrokh Thomas

2008-01-01T23:59:59.000Z

127

Critical masses of highly enriched uranium diluted with Gd and polyethylene  

SciTech Connect

A series of experiments have been performed containing highly enriched uranium, hydrogenous moderator (polyethylene), and gadolinium as a neutron absorber. The purpose of the experiments is to provide additional criticality data that can be used to verify and validate criticality safety evaluations in support of the National Spent Fuel Program. In addition, the experiments were also designed to provide criticality data for heterogeneous systems as noted in reference 1.

Sanchez, R. G. (Rene G.); Loaiza, D. J. (David J.); Bennion, J. (John)

2001-01-01T23:59:59.000Z

128

Method for making a low density polyethylene waste form for safe disposal of low level radioactive material  

DOE Patents (OSTI)

In the method of the invention low density polyethylene pellets are mixed in a predetermined ratio with radioactive particulate material, then the mixture is fed through a screw-type extruder that melts the low density polyethylene under a predetermined pressure and temperature to form a homogeneous matrix that is extruded and separated into solid monolithic waste forms. The solid waste forms are adapted to be safely handled, stored for a short time, and safely disposed of in approved depositories.

Colombo, P.; Kalb, P.D.

1984-06-05T23:59:59.000Z

129

Treatability studies for polyethylene encapsulation of INEL low-level mixed wastes. Final report  

SciTech Connect

Treatability studies for polyethylene encapsulation of Idaho National Engineering Laboratory (INEL) low-level mixed wastes were conducted at Brookhaven National Laboratory. The treatability work, which included thermal screening and/or processibility testing, was performed on priority candidate wastes identified by INEL to determine the applicability of polyethylene encapsulation for the solidification and stabilization of these mixed wastes. The candidate wastes selected for this preliminary study were Eutectic Salts, Ion Exchange Resins, Activated Carbons, Freon Contaminated Rags, TAN TURCO Decon 4502, ICPP Sodium Bearing Liquid Waste, and HTRE-3 Acid Spill Clean-up. Thermal screening was conducted for some of these wastes to determine the thermal stability of the wastes under expected pretreatment and processing conditions. Processibility testing to determine whether the wastes were amenable to extrusion processing included monitoring feed consistency, extruder output consistency, waste production homogeneity, and waste form performance. Processing parameters were not optimized within the scope of this study. However, based on the treatability results, polyethylene encapsulation does appear applicable as a primary or secondary treatment for most of these wastes.

Lageraaen, P.R.; Patel, B.R.; Kalb, P.D.; Adams, J.W.

1995-10-01T23:59:59.000Z

130

2 x 2 Polyethylene Reflected and Moderated Highly Enriched Uranium System with Rhenium  

SciTech Connect

The 2 × 2 array HEU-Re experiment was performed on the Planet universal critical assembly machine on November 4th, 2003 at the Los Alamos Critical Experiments Facility (LACEF) at Los Alamos National Laboratory (LANL). For this experiment, there were 10 ½ units, each full unit containing four HEU foils and two rhenium foils. The top unit contained only two HEU foils and two rhenium foils. A total of 42 HEU foils were used for this experiment. Rhenium is a desirable cladding material for space nuclear power applications. This experiment consisted of HEU foils interleaved with rhenium foils and is moderated and reflected by polyethylene plates. A unit consisted of a polyethylene plate, which has a recess for rhenium foils, and four HEU foils in a single layer in the top recess of each polyethylene plate. The Planet universal criticality assembly machine has been previously used in experiments containing HEU foils interspersed with SiO2 (HEU-MET-THERM-001), Al (HEU-MET-THERM-008), MgO (HEU-MET-THERM-009), Gd foils (HEU-MET-THERM-010), 2 × 2 × 26 Al (HEU-MET-THERM-012), Fe (HEU-MET-THERM-013 and HEU-MET-THERM-015), 2 × 2 × 23 SiO2 (HEU-MET-THERM-014), 2 × 2 × 11 hastalloy plates (HEU-MET-THERM-016), and concrete (HEU-MET-THERM-018). The 2 × 2 array of HEU-Re is considered acceptable for use as a benchmark critical experiment.

A. Nichole Ellis; Jesson Hutchinson; John D. Bess; Dmitry N. Polyakov; Evgeny S. Glushkov; Alexey E. Glushkov

2010-09-01T23:59:59.000Z

131

CX-001507: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

507: Categorical Exclusion Determination 507: Categorical Exclusion Determination CX-001507: Categorical Exclusion Determination National Outdoor Leadership School Retrofit #2 CX(s) Applied: B5.1 Date: 04/01/2010 Location(s): Lander, Wyoming Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Energy Efficiency and Conservation Block Grant funds. The National Outdoor Leadership School proposes to install a 6.0 ton Ground Source Heat Pump at the National Outdoor leadership School in Lander, Wyoming. Project consists of 4 boreholes at 250 feet each comprised of high-density polyethylene (HDPE) piping, the boreholes will be encased in thermally enhance grout, and the system will use propylene glycol. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-001507.pdf More Documents & Publications

132

Comparison between HDPE/Clay and HDPE/Piassava Fiber/Clay ...  

Science Conference Proceedings (OSTI)

Nickel Recovery from Sukinda Chromite Overburden Using Shewanella Putrefaciens · Optimization of Process Parameters on the Siffusion Bonding of a ...

133

Polyethylene-Reflected Arrays of HEU(93.2) Metal Units Separated by Vermiculite  

SciTech Connect

This benchmark details the results of an experiment performed in the early 1970s as part of a series testing critical configurations in three dimensional arrays. For this experiment, cylinders of 93.2% enriched uranium metal were arranged in a 2x2x2 array inside of a polyethylene reflector. Layers of vermiculite of varying heights were surrounding each cylinder to achieve criticality variations. A total of four experimental configurations were tested by D.W. Magnuson, and detailed in his experimental report “Critical Three-Dimensional Arrays of Neutron Interacting Units: Part IV. Arrays of U(93.2) Metal Reflected by Concrete and Arrays Separated by Vermiculite and Reflected by Polyethylene.” The benchmark HEU-MET-FAST054 is closely related; the results of both experiments are discussed in the same report (Ref. 1) Closely related work has been recorded in HEU-MET-FAST-053, which is a benchmark evaluation of a different series of three dimensional array experiments with four different moderator materials. HEU-MET-FAST-023 and HEU-MET-FAST-026 are also related because they utilize the same metal cylinders as these experiments.

Mackenzie Gorham; J. Blair Briggs; John D. Bess; Virginia Dean; Davis Reed

2010-09-01T23:59:59.000Z

134

Absolute intensity calibration of flat-field space-resolved extreme ultraviolet spectrometer using radial profiles of visible and extreme ultraviolet bremsstrahlung continuum emitted from high-density plasmas in Large Helical Device  

Science Conference Proceedings (OSTI)

A precise absolute intensity calibration of a flat-field space-resolved extreme ultraviolet (EUV) spectrometer working in wavelength range of 60-400 A is carried out using a new calibration technique based on radial profile measurement of the bremsstrahlung continuum in Large Helical Device. A peaked vertical profile of the EUV bremsstrahlung continuum has been successfully observed in high-density plasmas (n{sub e}{>=} 10{sup 14} cm{sup -3}) with hydrogen ice pellet injection. The absolute calibration can be done by comparing the EUV bremsstrahlung profile with the visible bremsstrahlung profile of which the absolute value has been already calibrated using a standard lamp. The line-integrated profile of measured visible bremsstrahlung continuum is firstly converted into the local emissivity profile by considering a magnetic surface distortion due to the plasma pressure, and the local emissivity profile of EUV bremsstrahlung is secondly calculated by taking into account the electron temperature profile and free-free gaunt factor. The line-integrated profile of the EUV bremsstrahlung continuum is finally calculated from the local emissivity profile in order to compare with measured EUV bremsstrahlung profile. The absolute intensity calibration can be done by comparing measured and calculated EUV bremsstrahlung profiles. The calibration factor is thus obtained as a function of wavelength with excellent accuracy. It is also found in the profile analysis that the grating reflectivity of EUV emissions is constant along the direction perpendicular to the wavelength dispersion. Uncertainties on the calibration factor determined with the present method are discussed including charge-coupled device operation modes.

Dong Chunfeng; Wang Erhui [Department of Fusion Science, Graduate University for Advanced Studies, Toki 509-5292, Gifu (Japan); Morita, Shigeru; Goto, Motoshi [Department of Fusion Science, Graduate University for Advanced Studies, Toki 509-5292, Gifu (Japan); National Institute for Fusion Science, Toki 509-5292, Gifu (Japan)

2011-11-15T23:59:59.000Z

135

The compatibility of various polymeric liner and pipe materials with simulated double-shell slurry feed at 90/degree/C: Hanford Grout Technology Program  

SciTech Connect

The purpose of this study was to evaluate the compatibility of various polymeric liner and pipe materials with a low-level radioactive waste slurry called double-shell slurry feed (DSSF). The evaluation was necessary as part of the permitting process authorized by the Resource Conservation and Recovery Act (RCRA), PL-94-580. Materials that were examined included five flexible membrane liners (Hytrel/reg sign/ polyester, polyurethane, 8130 XR5/reg sign/, polypropylene, and high-density polyethylene) and high-density polyethylene (HDPE) pipe. The liner and pipe samples were immersed for 120 days in the synthetic DSSE at 90/degree/C, the maximum expected temperature in the waste disposal scenario. Physical properties of the liner and pipe samples were measured before immersion and every 30 days after immersion, in accordance with EPA Method 9090. In addition, some of the materials were exposed to four different radiation doses after 30 days of immersion. Physical properties of these materials were measured immediately after exposure and after an additional 90 days of immersion to determine each material's response to radiation, and whether radiation exposure affected the chemical compatibility of the material. 20 refs., 41 figs., 13 tabs.

Farnsworth, R.K.; Hymas, C.R.

1989-08-01T23:59:59.000Z

136

HANFORD SITE LOW EXPOSURE PIPELINE REPAIR USING A NON-METALLIC COMPOSITE SYSTEM  

Science Conference Proceedings (OSTI)

At the Department of Energy, Richland Operations (DOE-RL) Hanford site in eastern Washington, a 350 mm (14 inch) diameter high density polyethylene (HDPE) pump recirculation pipeline failed at a bonded joint adjacent to a radiologically and chemically contaminated groundwater storage basin. The responsible DOE-RL contractor, CH2MHill Plateau Remediation Company, applied a fiberglass reinforced plastic (composite) field repair system to the failed joint. The system was devised specifically for the HDPE pipe repair at the Hanford site, and had not been used on this type of plastic piping previously. This paper introduces the pipe failure scenario, describes the options considered for repair and discusses the ultimate resolution of the problem. The failed pipeline was successfully returned to service with minimal impact on waste water treatment plant operating capacity. Additionally, radiological and chemical exposures to facility personnel were maintained as low as reasonably achievable (ALARA). The repair is considered a success for the near term, and future monitoring will prove whether the repair can be considered for long term service and as a viable alternative for similar piping failures at the Hanford site.

HUTH RJ

2009-11-12T23:59:59.000Z

137

Predicted Effects of Tritium Exposures on Fast-Acting Piezoelectric Valves for Gas Fueling at TFTR  

SciTech Connect

The prospects for using piezoelectrically-driven valves with elastomeric or thermoplastic poppets in tritium gas service have been investigated. A modelling study of a typical valve incorporating ethylene-propylene rubber (EPR) or high density polyethylene (HDPE) was performed. Equations were developed linking applied voltage; ceramic bimorph preloading force, elastic deflection modulus, and specific deflection force (per volt applied); polymer elastic modulus, thickness, seal surface area, and compression (to make seal); elastomer compression set; thermoplastic creep modulus; and flow gap between seat and polymer tip. It was determined that, while EPR should seal the valve orifice more easily, HDPE should produce a valve flow rate vs. voltage curve less variant with time and exposure. Both should, however, be sealable and allow flow curves perturbed by less than or equal to 10% of full scale after ~100 days of exposure to 10{sup}5 Pa (1 atm) T{sub}2 gas (equivalent to ~7 x 10{sup}7 rad = 7 x 10{sup}5 Gy dosage).

Gill, J. T.; Pierce, C. W.

1985-04-01T23:59:59.000Z

138

1D-to-3D transition of photon heat conduction in polyethylene using molecular dynamics simulations  

E-Print Network (OSTI)

Experiments have demonstrated that the mechanical stretching of bulk polyethylene can increase its thermal conductivity by more than two orders of magnitude, from 0.35 W/mK to over 40W/mK, which is comparable to steel. ...

Henry, Asegun Sekou Famake

2009-01-01T23:59:59.000Z

139

Plasma Treatment of Polyethylene Powder Particles in Hollow Cathode Glow Discharge  

Science Conference Proceedings (OSTI)

Polyethylen (PE) is widely used in the production of foils, insulators, packaging materials, plastic bottles etc. Untreated PE is hydrophobic due to its unpolar surface. Therefore, it is hard to print or glue PE and the surface has to be modified before converting.In the present experiments a hollow cathode glow discharge is used as plasma source which is mounted in a spiral conveyor in order to ensure a combines transport of PE powder particles. With this set-up a homogeneous surface treatment of the powder is possible while passing the glow discharge. The plasma treatment causes a remarkable enhancement of the hydrophilicity of the PE powder which can be verified by contact angle measurements and X-ray photoelectron spectroscopy.

Wolter, Matthias; Quitzau, Meike; Bornholdt, Sven; Kersten, Holger [IEAP, University Kiel, Kiel (Germany)

2008-09-07T23:59:59.000Z

140

Tapanuli Organoclay Addition Into Linear Low Density Polyethylene-Pineapple Fiber Composites  

Science Conference Proceedings (OSTI)

Linear low density polyethylene-Tapanuli organoclay-pineapple fiber composites were succesfully synthesized by a melt intercalation method. The clay was modified as an organoclay by a cation exchange reaction using hexadecyl trimethyl ammonium bromide (HDTMABr) surfactant. The X-ray diffraction results of the organoclay exhibited a higher basal spacing of 1.87 nm compared to the unmodified clay of 1.46 nm. The composite tensile strength was enhanced up to 46.4% with the 1 wt% organoclay addition. Both tensile and flexural moduli increased up to 150.6% and 43% with the 3 wt% organoclay addition to the composites. However, the flexural strength of the composites was not improved with the organoclay addition. The addition of organoclay has also decreased the heat deflection temperature of the composites.

Adawiyah, Robiatul; Juwono, Ariadne L. [Department of Physics, Faculty of Mathematics and Natural Sciences, University of Indonesia, Depok 16424 (Indonesia); Roseno, Seto [Center of Material Technology, Agency for Assessment and Application of Technology, Jl. M.H. Thamrin No.8, Jakarta 10340 (Indonesia)

2010-12-23T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Computer-optimized design of polyethylene-moderated {sup 3}He counters for fast neutrons  

Science Conference Proceedings (OSTI)

Because polyethylene-moderated {sup 3}He counters are rugged and reliable, they are generally the instruments of choice for field detection of fast neutrons in gamma-ray backgrounds. Their main drawback is the bulky, massive moderator needed to reduce the incident neutron energies to the sensitive range of the {sup 3}He+n capture reaction. This report discusses an optimization approach that provides a detector with uniform angular response and the maximum detection efficiency per unit mass. The key assumption is that each parameter has a geometrical interpretation and its effect on the response can be evaluated independently from that of the others. Specifically, the detection efficiency can be written as a product of separate functions for the moderator mass, gas pressure, tube position, etc., and the uniformity of the angular response is determined by the symmetry of the moderator dimensions. This analytical model was tested by compiling a comprehensive database of detector efficiencies as functions of the different parameters, including one- versus two-tube detectors, moderator masses from 1 to 6 kg, gas pressures from 1 to 20 atm, etc. In general, the model reproduced both the magnitude and angular dependence of the efficiency to within about 10%. To a high degree, the most important parameters are polyethylene mass and the quantity of {sup 3}He gas; because of neutron diffusion out of the moderator, the optimum tube positions are near the center of the detector. The highest value of the efficiency per unit mass occurs near 3 kg, a result that requires the most compact detectors to use more than a single {sup 3}He tube. In this case, the optimum detector has two tubes and a total mass of 3.0 kg. Although they could use 4-atm tubes with 2.54-cm diameters, increasing the gas volume could easily provide a 20% increase in efficiency with no changes in other parameters.

R. C. Byrd

2000-05-01T23:59:59.000Z

142

Macroencapsulation of mixed waste debris at the Hanford Nuclear Reservation -- Final project report by AST Environmental Services, LLC  

Science Conference Proceedings (OSTI)

This report summarizes the results of a full-scale demonstration of a high density polyethylene (HDPE) package, manufactured by Arrow Construction, Inc. of Montgomery, Alabama. The HDPE package, called ARROW-PAK, was designed and patented by Arrow as both a method to macroencapsulation of radioactively contaminated lead and as an improved form of waste package for treatment and interim and final storage and/or disposal of drums of mixed waste. Mixed waste is waste that is radioactive, and meets the criteria established by the United States Environmental Protection Agency (US EPA) for a hazardous material. Results from previous testing conducted for the Department of Energy (DOE) at the Idaho National Engineering Laboratory in 1994 found that the ARROW-PAK fabrication process produces an HDPE package that passes all helium leak tests and drop tests, and is fabricated with materials impervious to the types of environmental factors encountered during the lifetime of the ARROW-PAK, estimated to be from 100 to 300 years. Arrow Construction, Inc. has successfully completed full-scale demonstration of its ARROW-PAK mixed waste macroencapsulation treatment unit at the DOE Hanford Site. This testing was conducted in accordance with Radiological Work Permit No. T-860, applicable project plans and procedures, and in close consultation with Waste Management Federal Services of Hanford, Inc.`s project management, health and safety, and quality assurance representatives. The ARROW-PAK field demonstration successfully treated 880 drums of mixed waste debris feedstock which were compacted and placed in 149 70-gallon overpack drums prior to macroencapsulation in accordance with the US EPA Alternate Debris Treatment Standards, 40 CFR 268.45. Based on all of the results, the ARROW-PAK process provides an effective treatment, storage and/or disposal option that compares favorably with current mixed waste management practices.

Baker, T.L.

1998-02-25T23:59:59.000Z

143

Measurement and Analysis of Fission Rates in a Spherical Mockup of Uranium and Polyethylene  

E-Print Network (OSTI)

Measurements of the reaction rate distribution were carried out using two kinds of Plate Micro Fission Chamber(PMFC). The first is a depleted uranium chamber and the second an enriched uranium chamber. The material in the depleted uranium chamber is strictly the same as the material in the uranium assembly. With the equation solution to conduct the isotope contribution correction, the fission rate of 238U and 235U were obtained from the fission rate of depleted uranium and enriched uranium. And then, the fission count of 238U and 235U in an individual uranium shell was obtained. In this work, MCNP5 and continuous energy cross sections ENDF/BV.0 were used for the analysis of fission rate distribution and fission count. The calculated results were compared with the experimental ones. The calculation of fission rate of DU and EU were found to agree with the measured ones within 10% except at the positions in polyethylene region and the two positions near the outer surface. Beacause the fission chamber was not co...

Tong-Hua, Zhu; Xin-Xin, Lu; Rong, Liu; Zi-Jie, Han; Li, Jiang; Mei, Wang

2013-01-01T23:59:59.000Z

144

Microscopic Description of Entanglements in Polyethylene Networks and Melts: Strong, Weak, Pairwise, and Collective Attributes  

E-Print Network (OSTI)

We present atomistic molecular dynamics simulations of two Polyethylene systems where all entanglements are trapped: a perfect network, and a melt with grafted chain ends. We examine microscopically at what level topological constraints can be considered as a collective entanglement effect, as in tube model theories, or as certain pairwise uncrossability interactions, as in slip-link models. A pairwise parameter, which varies between these limiting cases, shows that, for the systems studied, the character of the entanglement environment is more pairwise than collective. We employ a novel methodology, which analyzes entanglement constraints into a complete set of pairwise interactions, similar to slip links. Entanglement confinement is assembled by a plethora of links, with a spectrum of confinement strengths, from strong to weak. The strength of interactions is quantified through a link `persistence', which is the fraction of time for which the links are active. By weighting links according to their strength, we show that confinement is imposed mainly by the strong ones, and that the weak, trapped, uncrossability interactions cannot contribute to the low frequency modulus of an elastomer, or the plateau modulus of a melt. A self-consistent scheme for mapping topological constraints to specific, strong binary links, according to a given entanglement density, is proposed and validated. Our results demonstrate that slip links can be viewed as the strongest pairwise interactions of a collective entanglement environment. The methodology developed provides a basis for bridging the gap between atomistic simulations and mesoscopic slip link models.

Stefanos D. Anogiannakis; Christos Tzoumanekas; Doros N. Theodorou

2012-12-06T23:59:59.000Z

145

Conserving Waterlogged Rope: A Review of Traditional Methods and Experimental Research with Polyethylene Glycol  

E-Print Network (OSTI)

The excavation of Sieur de la Salle's ship, La Belle, yielded a large amount of waterlogged rope requiring conservation. A history of hemp and rope manufacture is reviewed to assist in the identification of the materials and rope-work recovered from the La Belle, as well as to assist in selecting an appropriate conservation treatment. A summary of several methods used to conserve cordage is presented. Time has shown that not all of these treatment methods have remained viable options, and that continued study and experimentation are needed so that the conservator has the tools to develop an appropriate conservation plan for each artifact. The majority of La Belle's cordage was conserved using the passivation polymers method developed by Dr. C. Wayne Smith and Dr. Donny L. Hamilton, both of Texas A&M University, in conjunction with Dow Corning Corporation, Midland, Michigan. An experiment applying knowledge gleaned from the passivation polymers process to polyethylene glycol (PEG) impregnation was conducted in an attempt to stabilize the PEG within the rope. The results were good; the rope retained some flexibility and appears stable with a slightly darker color than with silicone oil.

McCaskill, Jennifer R.

2009-05-01T23:59:59.000Z

146

Measurement of polyethylene pipe parameters during an ocean deployment. Final report  

DOE Green Energy (OSTI)

Data were acquired on the behavior of the polyethylene upwelling pipe for the GRI/DOE Marine Biomass Biological Test Farm during several phases of pipe assembly and ocean towing and deployment. The pipe is nominally 28 in O.D., 1400 feet long with wall thicknesses of 0.9 and 1.75 inches. The entire effort was conducted over a period of six weeks and was implemented on a strictly non-interference basis with the main Biomass Program. Three types of data were acquired during shore and ocean based operations conducted in the southern California area during the period from 15 September-27 September 1978. Axial strain data were obtained from two rows of 15 transducers each, separated circumferentially by 90/sup 0/ and distributed along the entire length of the pipe. Photographic data were also acquired from helicopter, boat and shore stationed cameras. The third type of data acquired were lowering line tension measurements made during the second successful deployment operation.

Hoppmann, R. F.; Ritchie, P. L.

1978-11-15T23:59:59.000Z

147

Equipment evaluation for low density polyethylene encapsulated nitrate salt waste at the Rocky Flats Plant  

SciTech Connect

Mixed wastes at the Rocky Flats Plant (RFP) are subject to regulation by the Resource Conservation and Recovery Act (RCRA). Polymer solidification is being developed as a final treatment technology for several of these mixed wastes, including nitrate salts. Encapsulation nitrate salts with low density polyethylene (LDPE) has been the preliminary focus of the RFP polymer solidification effort. Literature reviews, industry surveys, and lab-scale and pilot-scale tests have been conducted to evaluate several options for encapsulating nitrate salts with LDPE. Most of the effort has focused on identifying compatible drying and extrusion technologies. Other processing options, specifically meltration and non-heated compounding machines, were also investigated. The best approach appears to be pretreatment of the nitrate salt waste brine in either a vertical or horizontal thin film evaporator followed by compounding of the dried waste with LDPE in an intermeshing, co-rotating, twin-screw extruder. Additional pilot-scale tests planned for the fall of 1993 should further support this recommendation. Preliminary evaluation work indicates that meltration is not possible at atmospheric pressure with the LDPE (Chevron PE-1409) provided by RFP. However, meltration should be possible at atmospheric pressure using another LDPE formulation with altered physical and rheological properties: Lower molecular weight and lower viscosity (Epoline C-15). Contract modifications are now in process to allow a follow-on pilot scale demonstration. Questions regarding changed safety and physical properties of the resultant LDPE waste form due to use of the Epoline C-15 will be addressed. No additional work with non-heated mixer compounder machines is planned at this time.

Yamada, W.I.; Faucette, A.M.; Jantzen, R.C.; Logsdon, B.W.; Oldham, J.H.; Saiki, D.M.; Yudnich, R.J.

1993-08-30T23:59:59.000Z

148

Model institutional infrastructures for recycling of photovoltaic modules  

DOE Green Energy (OSTI)

This paper describes model approaches to designing an institutional infrastructure for the recycling of decommissioned photovoltaic modules; more detailed discussion of the information presented in this paper is contained in Reaven et al., (1996)[1]. The alternative approaches are based on experiences in other industries, with other products and materials. In the aluminum, scrap iron, and container glass industries, where recycling is a long-standing, even venerable practice, predominantly private, fully articulated institutional infrastructures exist. Nevertheless, even in these industries, arrangements are constantly evolving in response to regulatory changes, competition, and new technological developments. Institutional infrastructures are less settled for younger large- scale recycling industries that target components of the municipal solid waste (MSW) stream, such as cardboard and newspaper, polyethylene terephthalate (PET) and high-density polyethylene (HDPE) plastics, and textiles. In these industries the economics, markets, and technologies are rapidly changing. Finally, many other industries are developing projects to ensure that their products are recycled (and recyclable) e.g., computers, non-automotive batteries, communications equipment, motor and lubrication oil and oil filters, fluorescent lighting fixtures, automotive plastics and shredder residues, and bulk industrial chemical wastes. The lack of an an adequate recycling infrastructure, attractive end-markets, and clear the economic incentives, can be formidable impediments to a self- sustaining recycling system.

Moscowitz, P.D.; Reaven, J.; Fthenakis, V.M.

1996-07-01T23:59:59.000Z

149

WASTE CHARACTERIZATION OF POLYMERIC COMPONENTS EXPOSED TO TRITIUM GAS  

Science Conference Proceedings (OSTI)

A recent independent review led to uncertainty about the technical basis for characterizing the residual amount of tritium in polymer components used in the Savannah River Site Tritium Facilities that are sent for waste disposal. A review of a paper published in the open literature firmly establishes the basis of the currently used characterization, 10 Ci/cc. Information provided in that paper about exposure experiments performed at the DOE Mound Laboratory allows the calculation of the currently used characterization. These experiments involved exposure of high density polyethylene (HD-PE) to initially 1 atm tritium gas. In addition, a review of recent research at the Savannah River Site not only further substantiates this characterization, but also establishes its use for ultra-high molecular weight polyethylene (UHMW-PE), polytetrafluoroethylene (PTFE, a trade name is Teflon{reg_sign}), and Vespel{reg_sign} polyimide. 10 Ci/cc tritium is a representative characterization for any type of polymer components exposed at ambient temperature and at approximately 1 atm. tritium gas.

Clark, E

2008-02-15T23:59:59.000Z

150

The Advantages of HDPE Piping & Vaults in the  

E-Print Network (OSTI)

First in the world to produce 1600mm PE pipes Production of district heating pipes starts 1984 & telecom · Waste water treatment · House drainage · Under ground ventilation · Renovation · District heating & cooling · Special constructions · Marine intakes and outfalls · Welding, extrusion and blown

151

Membranes Obtained from PA6/HDPE Blends Via Precipitation by ...  

Science Conference Proceedings (OSTI)

The results showed the characteristic pores for microfiltration process. .... of Transparent Conductive Films of Magnesium Hydroxide Based Compounds.

152

Comparative Study of the Sugarcane Bagasse Fiber/HDPE ...  

Science Conference Proceedings (OSTI)

The composite samples obtained by extrusion and injection molding processes were irradiated at 50 and 90 kGy using either a 1.5 MeV electron beam ...

153

In vitro characterization of pluronic F127 and D-?-tocopheryl polyethylene glycol 1000 succinate mixed micelles as nanocarriers for targeted anticancer-drug delivery  

Science Conference Proceedings (OSTI)

Mixed micelles of Pluronic F127 and d-a-tocopheryl polyethylene glycol 1000 succinate (TPGS) in different molar ratios (10 : 0, 7 : 3, 5 : 5, and 3 : 7) were prepared to characterize this system as nanocarriers for targeted delivery of chemotherapeutic ...

Adeel Masood Butt, Mohd Cairul Iqbal Mohd Amin, Haliza Katas, Narong Sarisuta, Wasu Witoonsaridsilp, Ruthairat Benjakul

2012-01-01T23:59:59.000Z

154

High-density thermoelectric power generation and nanoscale thermal metrology  

E-Print Network (OSTI)

Thermoelectric power generation has been around for over 50 years but has seen very little large scale implementation due to the inherently low efficiencies and powers available from known materials. Recent material advances ...

Mayer, Peter (Peter Matthew), 1978-

2007-01-01T23:59:59.000Z

155

Hydrodynamical modeling of targets compression to high densities  

E-Print Network (OSTI)

by composite schemes on moving grid. Both models also include heat conductivity. The quotidian equation, E is total energy and heat flux W is given by W = - grad T (2) where T is temperature and is heat note that for most presented computations the heat conductivity is negligible. The above system

Limpouch, Jiri

156

Update on US High Density Fuel Fabrication Development  

SciTech Connect

Second generation uranium molybdenum fuel has shown excellent in-reactor irradiation performance. This metallic fuel type is capable of being fabricated at much higher loadings than any presently used research reactor fuel. Due to the broad range of fuel types this alloy system encompasses—fuel powder to monolithic foil and binary fuel systems to multiple element additions—significant amounts of research and development have been conducted on the fabrication of these fuels. This paper presents an update of the US RERTR effort to develop fabrication techniques and the fabrication methods used for the RERTR-9A miniplate test.

C.R. Clark; G.A. Moore; J.F. Jue; B.H. Park; N.P. Hallinan; D.M. Wachs; D.E. Burkes

2007-03-01T23:59:59.000Z

157

High density harp or wire scanner for particle beam diagnostics  

DOE Patents (OSTI)

A diagnostic detector head harp (23) used to detect and characterize high energy particle beams using an array of closely spaced detector wires (21), typically carbon wires, spaced less than 0.1 cm (0.040 inch) connected to a hybrid microcircuit (25) formed on a ceramic substrate (26). A method to fabricate harps (23) to obtain carbon wire spacing and density not previously available utilizing hybrid microcircuit technology. The hybrid microcircuit (25) disposed on the ceramic substrate (26) connects electrically between the detector wires (21) and diagnostic equipment (37) which analyzes pulses generated in the detector wires (21) by the high energy particle beams.

Fritsche, Craig T. (Overland Park, KS); Krogh, Michael L. (Lee' s Summit, MO)

1996-05-21T23:59:59.000Z

158

Inexpensive Production of High Density Thin Ceramic Films ...  

For Industry; For Researchers; Success Stories; About Us; Available Technologies. Browse By Category Advanced Materials; ... density of the ceramic ...

159

Application of a High-Density Oligonucleotide Microarray ...  

When uranium mining and processing for nuclear weapons ... (Santa Clara, CA), directly onto a 1.28-cm by 1.28-cm glassl; Applied Biosystems, Foster Ci ...

160

PREPARATION OF HIGH DENSITY UO$sub 2$  

DOE Patents (OSTI)

A method is presented for the preparation of highdensity UO/sub 2/ from UF/sub 6/. In accordance with the invention, UF/sub 6/ is reacted with water and concentrated ammonium hydroxide is added to the resulting aqueous solution of UO/ sub 2/F/sub 2/. The resulting precipitate is calcined to U/sub 3/O/sub 8/ an d the U/sub 3/O/sub 8/ is reduced to UO/sub 2/ with a gaseous mixture comprised of carbon monoxide and carbon dioxide at a temperature of from 1600 to 1900 deg C.

Googin, J.M.

1959-09-29T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

PREPARATION OF HIGH-DENSITY, COMPACTIBLE THORIUM OXIDE PARTICLES  

DOE Patents (OSTI)

A method is given for preparing millimeter-size, highdensity thorium oxide particles suitable for fabrication into nuclear reactor feel elements by means of vibratory compaction. A thorium oxide gel containing 3.7 to 7 weight per cent residual volatile nitrate and water is prepared by drying a thorium oxide sol. The gel is then slowly heated to a temperature of about 450DEC, and the resulting gel fragments are calcined. The starting sol is prepared by repeated dispersion of oxalate-source thorium oxide in a nitrate system or by dispersion of steam-denitrated thorium oxide in water. (AEC)

McCorkle, K.H.; Kleinsteuber, A.T.; Schilling, C.E.; Dean, O.C.

1962-05-22T23:59:59.000Z

162

Raman spectroscopy on simple molecular systems at very high density  

DOE Green Energy (OSTI)

We present an overview of how Raman spectroscopy is done on simple molecular substances at high pressures. Raman spectroscopy is one of the most powerful tools for studying these substances. It is often the quickest means to explore changes in crystal and molecular structures, changes in bond strength, and the formation of new chemical species. Raman measurements have been made at pressures up to 200 GPa (2 Mbar). Even more astonishing is the range of temperatures (4-5200/degree/K) achieved in various static and dynamic (shock-wave) pressure experiments. One point we particularly wish to emphasize is the need for a good theoretical understanding to properly interpret and use experimental results. This is particularly true at ultra-high pressures, where strong crystal field effects can be misinterpreted as incipient insulator-metal transitions. We have tried to point out apparatus, techniques, and results that we feel are particularly noteworthy. We have also included some of the /open quotes/oral tradition/close quotes/ of high pressure Raman spectroscopy -- useful little things that rarely or never appear in print. Because this field is rapidly expanding, we discuss a number of exciting new techniques that have been informally communicated to us, especially those that seem to open new possibilities. 58 refs., 18 figs.

Schiferl, D.; LeSar, R.S.; Moore, D.S.

1988-01-01T23:59:59.000Z

163

The Nuclear Equation of State at high densities  

E-Print Network (OSTI)

Ab inito calculations for the nuclear many-body problem make predictions for the density and isospin dependence of the nuclear equation-of-state (EOS) far away from the saturation point of nuclear matter. I compare predictions from microscopic and phenomenological approaches. Constraints on the EOS derived from heavy ion reactions, in particular from subthreshold kaon production, as well as constraints from neutron stars are discussed.

Christian Fuchs

2006-10-10T23:59:59.000Z

164

A High Density Polarized Hydrogen Gas Target for Storage Rings  

E-Print Network (OSTI)

in a storage ring to study the target characteristics (nuclear polarization, target thickness, radiation 10 13 ~ H/cm 2 . The target polarization was unaffected by prolonged exposure of the target to beams in the use of polarized gases as internal targets in particle storage rings 1 . The first application

165

Joint Statement on Quadrilateral Cooperation on High-density...  

NLE Websites -- All DOE Office Websites (Extended Search)

Mar 27, 2012 We, the leaders of Belgium, France, the United States and the Republic of Korea gathered in Seoul on the occasion of the Second Nuclear Security Summit recognize that...

166

Piezoelectric Films for High Density Switching Arrays for Logic  

Science Conference Proceedings (OSTI)

Specific to this work is the functionality of the high aspect ratio piezoelectric ... and Their Electrochemical Performance for Energy Storage Applications.

167

High-density nanopore array for selective biomolecule transport.  

SciTech Connect

Development of sophisticated tools capable of manipulating molecules at their own length scale enables new methods for chemical synthesis and detection. Although nanoscale devices have been developed to perform individual tasks, little work has been done on developing a truly scalable platform: a system that combines multiple components for sequential processing, as well as simultaneously processing and identifying the millions of potential species that may be present in a biological sample. The development of a scalable micro-nanofluidic device is limited in part by the ability to combine different materials (polymers, metals, semiconductors) onto a single chip, and the challenges with locally controlling the chemical, electrical, and mechanical properties within a micro or nanochannel. We have developed a unique construct known as a molecular gate: a multilayered polymer based device that combines microscale fluid channels with nanofluidic interconnects. Molecular gates have been demonstrated to selectively transport molecules between channels based on size or charge. In order to fully utilize these structures, we need to develop methods to actively control transport and identify species inside a nanopore. While previous work has been limited to creating electrical connections off-channel or metallizing the entire nanopore wall, we now have the ability to create multiple, separate conductive connections at the interior surface of a nanopore. These interior electrodes will be used for direct sensing of biological molecules, probing the electrical potential and charge distribution at the surface, and to actively turn on and off electrically driven transport of molecules through nanopores.

Patel, Kamlesh D.

2011-11-01T23:59:59.000Z

168

herbicides, burning, and high-density loblolly pine  

DOE Green Energy (OSTI)

Kudzu is an aggressive, nonnative vine that currently dominates an estimated 810,000 ha of mesic forest communities in the eastern United States. To test an integrated method of weed control, abundances of kudzu and other plant species were compared during 4 yr after six herbicide treatments (clopyralid, triclopyr, metsulfuron, picloram 1 2,4-D, tebuthiuron, and a nonsprayed check), in which loblolly pines were planted at three densities (0, 1, and 4 seedlings m22) to induce competition and potentially delay kudzu recovery. This split-plot design was replicated on each of the four kudzu-dominated sites near Aiken, SC. Relative light intensity (RLI) and soil water content (SWC) were measured periodically to identify mechanisms of interference among plant species. Two years after treatment (1999), crown coverage of kudzu averaged , 2% in herbicide plots compared with 93% in the nonsprayed check, and these differences were maintained through 2001, except in clopyralid plots where kudzu cover increased to 15%. In 2001, pine interference was associated with 33, 56, and 67% reductions in biomass of kudzu, blackberry, and herbaceous vegetation, respectively. RLI in kudzu-dominated plots (4 to 15% of full sun) generally was less than half that of herbicide-treated plots. SWC was greatest in tebuthiuron plots, where total vegetation cover averaged 26% compared with 77 to 111% in other plots. None of the treatments eradicated kudzu, but combinations of herbicides and induced pine competition delayed its recovery.

T.B. Harrington; L.T. Rader-Dixon; J.W. Taylor, Jr.

2003-11-01T23:59:59.000Z

169

High Density Nano-Electrode Array for Radiation Detection  

Science Conference Proceedings (OSTI)

Bulk single crystals of Cd1-xZnxTe (x=0.04 to x=0.2) compound semiconductor is used for room temperature radiation detection. The production of large volume of Cd1-xZnxTe with low defect density is expensive. As a result there is a growing research interest in the production of nanostructured compound semiconductors such as Cd1-xZnxTe in an electrochemical route. In this investigation, Cd1-xZnxTe ternary compound semiconductor, referred as CZT, was electrodeposited in the form of nanowires onto a TiO2 nanotubular template from propylene carbonate as the non-aqueous electrolyte, using a pulse-reverse electrodeposition process at 130 ºC. The template acted as a support in growing ordered nanowire of CZT which acts as a one dimensional conductor. Cyclic Voltammogram (CV) studies were conducted in determining the potentials for the growth of nanowires of uniform stoichiometry. The morphologies and composition of CZT were characterized by using SEM, TEM and XRD. The STEM mapping carried out on the nanowires showed the uniform distribution of Cd, Zn and Te elements. TEM image showed that the nanowires were polycrystalline in nature. The Mott-Schottky analysis carried on the nanowires showed that the nanowires were a p-type semiconductor. The carrier density, band gap and resistivity of the Cd0.9Zn0.1Te nanowires were 4.29x1013 cm-3, 1.56 eV and 2.76x1011?-cm respectively. The high resistivity was attributed to the presence of deep defect states such as cadmium vacancies or Te antisites which were created by the anodic cycle of the pulse-reverse electrodeposition process. Stacks of series connected CZT nanowire arrays were tested with different bias potentials. The background current was in the order of tens of picoamperes. When exposed to radiation source Amerecium-241 (60 KeV, 4 ?Ci), the stacked CZT nanowires arrays showed sensing behavior. The sensitivity of the nanowire arrays increased as the number of stacks increased. The preliminary results indicate that the CZT nanowire arrays can be used as a potential X-ray and low energy gamma ray detector material at room temperature with a much low bias potential (0.7 – 4V) as against 300 – 500 V applied in the commercial bulk detector materials.

Mano Misra

2010-05-07T23:59:59.000Z

170

Anomalously High Density of Adsorbed Hydrogen on Surface ...  

Science Conference Proceedings (OSTI)

The amount of adsorbed hydrogen at 20 K under relative pressure = 0.9 was about 11 mass%, indicating that the hydrogen density of the adsorbed state should ...

171

High Density Nanocrystalline Rare Earth and Dysprosium-free ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

172

Structural and Thermal Characterization of Ti+O Ion Implanted UltraHigh Molecular Weight Polyethylene (UHMWPE)  

SciTech Connect

In this work, Metal-Gas Hybrid Ion Implantation technique was used as a tool for the surface modification of Ultra High Molecular Weight Polyethylene (UHMWPE). Samples were Ti+O ion implanted by using Metal-Vapour Vacuum Arc (MEVVA) ion implanter to a fluence of 5x10{sup 16} ion/cm{sup 2} for each species and extraction voltage of 30 kV. Untreated and surface treated samples were investigated by Rutherford Back Scattering (RBS) Spectrometry, Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) Spectroscopy, Thermo Gravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). Results indicate that Ti+O ion implantation can be applied on UHMWPE surfaces successfully. ATR-FTIR spectra indicate that the C-H concentration on the surface decreased after Ti+O implantation. Thermal characterization with TGA and DSC shows that polymeric decomposition temperature is shifted after ion implantation.

Oztarhan, A.; Urkac, E. Sokullu; Kaya, N. [Bioengineering Department, Ege University, Bornova, Izmir 35100 (Turkey); Tihminlioglu, F. [Chemical Engineering Department, Izmir Institute of High Technology, Gulbahcekoyu Urla, Izmir (Turkey); Ila, D.; Chhay, B.; Muntele, C. [Center for Irradiation of Materials, Alabama A and M University, Normal, Huntsville AL 35762 (United States); Budak, S. [Department of Electrical Engineering, Alabama A and M University, Normal, AL 35762 (United States); Oks, E.; Nikolaev, A. [High Current Electrnonics, Institute , Tomsk (Russian Federation)

2009-03-10T23:59:59.000Z

173

Polyethylene passive samplers for measuring hydrophobic organic chemical concentrations in sediment porewaters and their use in predicting bioaccumulation in soft-shell clams (Mya arenaria) from sites near Boston, MA  

E-Print Network (OSTI)

In order to determine the hazards posed by hydrophobic organic compounds (HOCs) in sediment beds, the following areas of research were explored: (1) the use of polyethylene (PE) sheets as passive sampling devices in ...

Fernandez, Loretta A. (Loretta Ana)

2010-01-01T23:59:59.000Z

174

Experimental Verification of Thermo-Mechanical Models for Cross-Linked Polyethylene Cable in Pipes and Ducts: Interim Report on First Cable Test  

Science Conference Proceedings (OSTI)

In 2002, the Electric Power Research Institute (EPRI) began investigations of the thermo-mechanical (T-M) behavior of transmission-class cable systems with extruded insulation in duct-manhole and pipe systems and began work on a design guide. The project consisted primarily of two efforts: experimental measurement of cable parameters and development of a mathematical simulation of the thermal and mechanical behavior of transmission-class cable with extruded cross-linked polyethylene (XLPE) ...

2013-12-23T23:59:59.000Z

175

Program on Technology Innovation: Evaluation of Moisture Influence on Cross-Linked Polyethylene/Silica Nanodielectrics for Utility C able Applications  

Science Conference Proceedings (OSTI)

Water (electrochemical) treeing is a major failure mechanism of utility polymeric power cables. Before nanodielectrics can be seriously considered as cable insulation, it is imperative that their performance be examined in an aqueous environment. This report describes the processes of moisture migration in (filled) polymers, documents experimental work in the temporal and spatial migration of water in nanocomposites in comparison with conventional cross-linked polyethylene, and describes water treeing ch...

2010-12-23T23:59:59.000Z

176

Nuclear Magnetic Resonance Investigation of Dynamics in Poly(Ethylene Oxide) Based Lithium Polyether-ester-sulfonate Ionomers  

SciTech Connect

Nuclear magnetic resonance (NMR) spectroscopy has been utilized to investigate the dynamics of poly(ethylene oxide)-based lithium sulfonate ionomer samples that have low glass transition temperatures. 1H and 7Li spin-lattice relaxation times (T1) of the bulk polymer and lithium ions, respectively, were analyzed in samples with a range of ion contents. The temperature dependence of T1 values along with the presence of minima in T1 enabled correlation times and activation energies to be obtained for both the segmental motion of the polymer backbone and the hopping motion of lithium cations. Similar activation energies of both the polymer and lithium ions in the lower ion content samples indicate that the polymer segmental motion and lithium ion hopping motion are correlated even though their respective correlation times differ significantly. A divergent trend is observed for correlation times and activation energies of the highest ion content sample due to the presence of ionic aggregation. Details about the polymer and cation dynamics on the nanosecond timescale are discussed and complement the findings of X-ray scattering and Quasi Elastic Neutron Scattering experiments.

Roach, David J.; Dou, Shichen; Colby, Ralph H.; Mueller, Karl T.

2012-01-07T23:59:59.000Z

177

Influence of defects and processing parameters on the properties of indium tin oxide films on polyethylene napthalate substrate  

Science Conference Proceedings (OSTI)

Indium tin oxide (ITO) thin films were deposited on polyethylene napthalate (PEN) by rf sputtering using different rf powers (60 and 120 W) and at different substrate temperatures (room temperature and 100 deg. C). Selected PEN substrates were pretreated using an Ar plasma before ITO sputter deposition. Rutherford backscattering spectrometry was used to determine the oxygen content in the films. Hall effect measurements were used to evaluate the electrical properties. In this paper the influence of defect structure, sputtering conditions, and the effect of annealing on the electrical and optical properties of ITO on PEN have been investigated. Electrical properties such as carrier concentration, mobility, and resistivity of the ITO films varied with rf power and substrate temperature. The electrical and optical properties of the films changed after annealing in air. This study also describes how the as-deposited amorphous ITO changes from amorphous to crystalline as a result of heat treatment, and investigates the effects of Sn defect clustering on electrical and optical properties of the ITO films.

Han, H.; Zoo, Yeongseok; Bhagat, S. K.; Lewis, J. S.; Alford, T. L. [School of Materials, Arizona State University, Tempe, Arizona 85287-8706 (United States); Center for Materials and Electronic Technologies, RTI International, P.O. Box 12194, Research Triangle Park, North Carolina 27709-2194 (United States); School of Materials and Flexible Display Center, Arizona State University, Tempe, Arizona 85287-8706 (United States)

2007-09-15T23:59:59.000Z

178

Project: Service Life Prediction of Filled Polymers  

Science Conference Proceedings (OSTI)

... Aaron Forster has been active in ASME Section XI activities on high-density polyethylene pipe code development in the ASME Boiler and Pressure ...

2013-01-02T23:59:59.000Z

179

U.S . DEPARTl\\.IENT OF ENERGY EERE PROJECT MANAGElvlENT CENTER  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

obtained prior to project implementation .. This system employs high density polyethylene pipe that would be heat fused at the joints to preventminimize leaks. The system uses...

180

A characterization and evaluation of coal liquefaction process streams. Quarterly technical progress report, October 1--December 31, 1995  

DOE Green Energy (OSTI)

The objectives of this project are to support the DOE direct coal liquefaction process development program and to improve the useful application of analytical chemistry to direct coal liquefaction process development. Independent analyses by well-established methods will be obtained of samples produced in direct coal liquefaction processes under evaluation by DOE. Additionally, analytical instruments and techniques which are currently underutilized for the purpose of examining coal-derived samples will be evaluated. The data obtained from this study will be used to help guide current process development and to develop an improved data base on coal and coal liquids properties. During this reporting period, CONSOL completed analyses of 81 feed and process stream samples from HTI bench Run CMSL-9. HTI liquefaction bench unit Run CMSL-9 (227-87) was operated with all-dispersed catalyst and Black Thunder Mine (Wyodak and Anderson seam) coal, with and without mixed plastics or high density polyethylene (HDPE) as coprocessing feedstocks. The dispersed catalysts used were Molyvan A and HTI`s iron catalyst, a sulfated iron hydroxide. Results are discussed in this report.

Robbins, G.A.; Brandes, S.D.; Winschel, R.A.; Burke, F.P.

1996-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Final Clean Closure Report Site 300 Surface Impoundments Closure Lawrence Livermore National Laboratory Livermore, California  

Science Conference Proceedings (OSTI)

Lawrence Livermore National Laboratory operated two Class II surface impoundments that stored wastewater that was discharged from a number of buildings located on the Site 300 Facility (Site 300). The wastewater was the by-product of explosives processing. Reduction in the volume of water discharged from these buildings over the past several years significantly reduced the wastewater storage needs. In addition, the impoundments were constructed in 1984, and the high-density polyethylene (HDPE) geomembrane liners were nearing the end of their service life. The purpose of this project was to clean close the surface impoundments and provide new wastewater storage using above ground storage tanks at six locations. The tanks were installed and put into service prior to closure of the impoundments. This Clean Closure Report (Closure Report) complies with State Water Resources Control Board (SWRCB) Section 21400 of the California Code of Regulations Title 27 (27 CCR section 21400). As required by these regulations and guidance, this Closure Report provides the following information: (1) a brief site description; (2) the regulatory requirements relevant to clean closure of the impoundments; (3) the closure procedures; and (4) the findings and documentation of clean closure.

Haskell, K

2006-02-14T23:59:59.000Z

182

FINAL CLOSURE PLAN SURFACE IMPOUNDMENTS CLOSURE, SITE 300  

SciTech Connect

Lawrence Livermore National Laboratory of the University of California (LLNL) operates two Class II surface impoundments that store wastewater that is discharged from a number of buildings located on the Site 300 Facility (Site 300). The wastewater is the by-product of explosives processing. Reduction in the volume of water discharged from these buildings over the past several years has significantly reduced the wastewater storage needs. In addition, the impoundments were constructed in 1984, and the high-density polyethylene (HDPE) geomembrane liners are nearing the end of their service life. The purpose of this project is to clean close the surface impoundments and provide new wastewater storage using portable, above ground storage tanks at six locations. The tanks will be installed prior to closure of the impoundments and will include heaters for allowing evaporation during relatively cool weather. Golder Associates (Golder) has prepared this Final Closure Plan (Closure Plan) on behalf of LLNL to address construction associated with the clean closure of the impoundments. This Closure Plan complies with State Water Resources Control Board (SWRCB) Section 21400 of the California Code of Regulations Title 27 (27 CCR {section}21400). As required by these regulations and guidance, this Plan provides the following information: (1) A site characterization, including the site location, history, current operations, and geology and hydrogeology; (2) The regulatory requirements relevant to clean closure of the impoundments; (3) The closure procedures; and, (4) The procedures for validation and documentation of clean closure.

Lane, J E; Scott, J E; Mathews, S E

2004-09-29T23:59:59.000Z

183

Polyethylene under tensile load: strain energy storage and breaking of linear and knotted alkanes probed by first-principles molecular dynamics calculations  

E-Print Network (OSTI)

The mechanical resistance of a polyethylene strand subject to tension and the way its properties are affected by the presence of a knot is studied using first-principles molecular dynamics calculations. The distribution of strain energy for the knotted chains has a well-defined shape that is very different from the one found in the linear case. The presence of a knot significantly weakens the chain in which it is tied. Chain rupture invariably occurs just outside the entrance to the knot, as is the case for a macroscopic rope.

A. Marco Saitta; Michael L. Klein

1999-09-01T23:59:59.000Z

184

Demonstration of Commissioning Tests for Extra-High Voltage Cross-Linked Polyethylene Cable Systems at Los Angeles Department of Wat er and Power  

Science Conference Proceedings (OSTI)

Today, utilities are installing an increasing number of cross-linked polyethylene (XLPE) transmission cables with system voltages ranging from 115 kV up to 345 kV. This report summarizes field partial discharge measurements and high-voltage ac commissioning tests performed on a Los Angeles Department of Water and Power (LADWP) 230-kV XLPE transmission cable system. The commissioning tests were performed with a field transportable, variable frequency, series resonant test set at 1.4 times rated voltage.

2002-09-11T23:59:59.000Z

185

Polyethylene fiber drawing optimization  

E-Print Network (OSTI)

Polymer fiber drawing creates fibers with enhanced thermal conductivity and strength compared to bulk polymer because drawing aligns the molecular chains. I optimize the polymer fiber drawing method in order to achieve ...

Chiloyan, Vazrik

2011-01-01T23:59:59.000Z

186

Pilot Demonstration of Technology for the Production of High Value Materials from the Ultra-Fine (PM2.5) Fraction of Coal Combustion Ash  

Science Conference Proceedings (OSTI)

The overall objective of this research was to determine the feasibility of recovering a very fine fraction of fly ash, that is 5 microns in diameter or less and examining the characteristics of these materials in new or at least less traditional applications. These applications included as a polymer filler or as a 'super' pozzolanic concrete additive. As part of the effort the ash from 6 power plants was investigated and characterized. This work included collection from ESP Hoppers and ponds. The ash was thoroughly characterized chemically and physically. Froth flotation was used to reduce the carbon and testing showed that flotation could effectively reduce carbon to acceptable levels (i.e. 0.5% LOI) for most of the substrates tested. in order to enable eventual use as fillers. Hydraulic classification was used in the separation of the fine ash from the coarse ash. Hydraulic classification requires the ash to be dispersed to be effective and a range of dispersants were tested for adsorption as well as sedimentation rate. A wide range of dosages were required (0.3 to 10 g/kg). In general the ponded ash required less dispersant. A model was developed for hydraulic classification. A pilot-scale hydraulic classifier was also designed and operated for the project. Product yields of up to 21% of feed solids were achieved with recoveries of <5 {micro}m particles as high as 64%. Mean particle sizes (D{sub 50}) of the ultra fine ash (UFA) products varied from 3.7 to 10 {micro}m. A patent was filed on the classifier design. A conceptual design of a Process Demonstration Unit (PDU) with a feed rate of 2 tons of raw ash feed per hour was also completed. Pozzolanic activity was determined for the UFA ashes in mortars. In general the overall strength index was excellent with values of 90% achieved in 3 days and {approx}100% in 7 days. Three types of thermoplastic polymers were evaluated with the UFA as a filler: high density polyethylene, thermoplastic elastomer and polyethylene terphthalate filled polymers were prepared and subjected to SEM analysis to verify that the UFA was well dispersed. The addition of fillers increased the modulus of the HDPE composite, but decreased both the offset yield stress and offset yield strain, showing that the fillers essentially made the composite stiffer but the transition to plastic deformation occurred earlier in filled HDPE as stress was applied. Similar results were obtained with TPE, however, the decrease in either stress or strain at offset yield were not as significant. Dynamic mechanical analyses (DMA) were also completed and showed that although there were some alterations in the properties of the HDPE and TPE, the alterations are small, and more importantly, transition temperatures are not altered. The UFA materials were also tested in expanded urethanes, were improvements were made in the composites strength and stiffness, particularly for lighter weight materials. The results of limited flammability and fire safety testing were encouraging. A flowsheet was developed to produce an Ultra-Fine Ash (UFA) product from reclaimed coal-fired utility pond ash. The flowsheet is for an entry level product development scenario and additional production can be accommodated by increasing operating hours and/or installing replicate circuits. Unit process design was based on experimental results obtained throughout the project and cost estimates were derived from single vendor quotes. The installation cost of this plant is estimated to be $2.1M.

T. L. Robl; J. G. Groppo; R. Rathbone; B. Marrs; R. Jewell

2008-07-18T23:59:59.000Z

187

Damage to DNA thymine residues in CHO cells by hydrogen peroxide and copper, ascorbate and copper, hypochlorite, or other oxidants: Protection by low MW polyethylene glycol  

SciTech Connect

Polyethylene glycol (PEG) MW 200-600, has been shown to protect animals against oxidant and radiation damage. In order to study the mechanism the authors examined the effect of PEG on damage to thymine residues in the DNA of living Chinese hamster ovary (CHO) cells. After growing to confluence in the presence of (methyl{sup 3}H)thymidine, the cells were treated, usually for 1 hr, with various combinations of H{sub 2}O{sub 2}, Cu{sup ++}, Fe{sup ++}, Ocl{sup {minus}}, ascorbate UV or X-irradiation, and PEG MW 300. The oxidants H{sub 2}O{sub 2}/Cu{sup ++}, and OCL{sup {minus}} released {sup 3}H into the medium from DNA thymine, and also formed thymine glycol residues in the DNA that were assayed by alkaline borohydride. The presence of 10% PEG during treatment significantly reduced the release of {sup 3}H into the medium but did not prevent formation of thymine glycol residues bound to the DNA. PEG at 10% had no effect on the cloning efficiency of CHO cells.

Schellenberg, K.A.; Shaeffer, J. (Eastern Virginia Medical School, Norfolk (United States))

1991-03-11T23:59:59.000Z

188

Microwave-assisted pyrolysis of HDPE using an activated carbon bed  

E-Print Network (OSTI)

.5–45.3% aromatics, with the remainder primarily short-chain aliphatics. This oil was approximately three times lighter than that produced in the absence of catalyst, with a narrower range of molecular masses that matched those of the liquid transport fuels petrol...

Russell, Alan Donald

2013-04-16T23:59:59.000Z

189

Effect of Blending HDPE with Coke on the Reduction Behavior of a ...  

Science Conference Proceedings (OSTI)

This has led to the exploration of the possibility of using polymer/coke blends in the production of ferro-alloys, particularly High Carbon Ferromanganese (HC ...

190

High density of electronic excitation in nanometric scale: transformation of the matter.  

NLE Websites -- All DOE Office Websites (Extended Search)

density density of electronic excitation in nanometric scale: transformation of the matter. Marcel Toulemonde CIMAP, Caen, France Within the several possibilities of producing high electronic excitation, swift heavy ions allow to create a high electronic density in nanometer scale. The energy deposited on the electrons along the ion path comes down to the lattice and transform the matter in a cylinder of around 10 nm in diameter (figure on left) After a review of selected experimental results concerning insulating materials, a transient thermal process will be developed to quantify the track size. In this model, the energy given to the electrons relaxes to the lattice atoms via the electron-phonon interaction. When considering the input parameters in this model, the main one will be the electron-phonon mean free path that defines the length of energy that diffuses on the electrons prior

191

HIGH-DENSITY CONCRETE WITH CERAMIC AGGREGATE BASED ON DEPLETED URANIUM DIOXIDE  

NLE Websites -- All DOE Office Websites (Extended Search)

DENSITY CONCRETE WITH CERAMIC AGGREGATE BASED ON DEPLETED URANIUM DENSITY CONCRETE WITH CERAMIC AGGREGATE BASED ON DEPLETED URANIUM DIOXIDE S.G. Ermichev, V.I. Shapovalov, N.V.Sviridov (RFNC-VNIIEF, Sarov, Russia) V.K. Orlov, V.M. Sergeev, A. G. Semyenov, A.M. Visik, A.A. Maslov, A. V. Demin, D.D. Petrov, V.V. Noskov, V. I. Sorokin, O. I. Uferov (VNIINM, Moscow, Russia) L. Dole (ORNL, Oak Ridge, USA) Abstract - Russia is researching the production and testing of concretes with ceramic aggregate based on depleted uranium dioxide (UO 2 ). These DU concretes are to be used as structural and radiation-shielded material for casks for A-plant spent nuclear fuel transportation and storage. This paper presents the results of studies aimed at selection of ceramics and concrete composition, justification of their production technology, investigation of mechanical properties, and chemical stability.

192

Balancedenergy sleep scheduling scheme for high density cluster-based sensor networks  

E-Print Network (OSTI)

Abstract — In order to conserve battery power in very dense sensor networks, some sensor nodes may be put into the sleep state while other sensor nodes remain active for the sensing and communication tasks. However, determining which of the sensor nodes should be put into the sleep state is non-trivial. As the goal of allowing nodes to sleep is to extend network lifetime, we propose and analyze a Balanced-energy Scheduling (BS) scheme in the context of cluster-based sensor networks. The BS scheme aims to evenly distribute the energy load of the sensing and communication tasks among all the nodes in the cluster, thereby extending the time until the cluster can no longer provide adequate sensing coverage. Two related sleep scheduling schemes, the Distance-based Scheduling (DS) scheme and the Randomized Scheduling (RS) scheme are also studied in terms of the coefficient of variation of their energy consumption. Analytical and simulation results are presented to evaluate the proposed BS scheme. It is shown that the BS scheme extends the cluster’s overall network lifetime significantly while maintaining a similar sensing coverage compared with the DS and the RS schemes for sensor clusters. I.

Jing Deng; Yunghsiang S. Han; Wendi B. Heinzelman; Pramod K. Varshney

2004-01-01T23:59:59.000Z

193

High density flux of Co nanoparticles produced by a simple gas aggregation apparatus  

Science Conference Proceedings (OSTI)

Gas aggregation is a well known method used to produce clusters of different materials with good size control, reduced dispersion, and precise stoichiometry. The cost of these systems is relatively high and they are generally dedicated apparatuses. Furthermore, the usual sample production speed of these systems is not as fast as physical vapor deposition devices posing a problem when thick samples are needed. In this paper we describe the development of a multipurpose gas aggregation system constructed as an adaptation to a magnetron sputtering system. The cost of this adaptation is negligible and its installation and operation are both remarkably simple. The gas flow for flux in the range of 60-130 SCCM (SCCM denotes cubic centimeter per minute at STP) is able to completely collimate all the sputtered material, producing spherical nanoparticles. Co nanoparticles were produced and characterized using electron microscopy techniques and Rutherford back-scattering analysis. The size of the particles is around 10 nm with around 75 nm/min of deposition rate at the center of a Gaussian profile nanoparticle beam.

Landi, G. T.; Romero, S. A.; Santos, A. D. [Departamento de Fisica dos Materiais e Mecanica, Laboratorio de Materiais Magneticos, Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, 05314-970 Sao Paulo, SP (Brazil)

2010-03-15T23:59:59.000Z

194

Turbo-alternator-compressor design for supercritical high density working fluids  

DOE Patents (OSTI)

Techniques for generating power are provided. Such techniques involve a thermodynamic system including a housing, a turbine positioned in a turbine cavity of the housing, a compressor positioned in a compressor cavity of the housing, and an alternator positioned in a rotor cavity between the turbine and compressor cavities. The compressor has a high-pressure face facing an inlet of the compressor cavity and a low-pressure face on an opposite side thereof. The alternator has a rotor shaft operatively connected to the turbine and compressor, and is supported in the housing by bearings. Ridges extending from the low-pressure face of the compressor may be provided for balancing thrust across the compressor. Seals may be positioned about the alternator for selectively leaking fluid into the rotor cavity to reduce the temperature therein.

Wright, Steven A.; Fuller, Robert L.

2013-03-19T23:59:59.000Z

195

Experimental Studies of ICF Indirect-Drive Be and High Density C Candidate Ablators  

Science Conference Proceedings (OSTI)

To validate our modeling of the macroscopic and microscopic hydrodynamic and equation of state response of these candidate ablators to NIC-relevant x-ray drive, a multi-lab experimental program has been verifying the behavior of these new ablators. First, the pressures for onset and termination of melt for both Be and HDC under single or double shock drive has been measured at the Z and Omega facilities. Second, the level and effect of hard x-ray preheat has been quantified in scaled experiments at the Omega facility. Third, a long planar x-ray drive has been developed to check 2D and 3D perturbation growth at the ablation front upon acceleration. The concept has been extended to study growth at and near the ablator-ice interface upon deceleration. In addition, experimental designs for validating the expected low level of perturbation seeding due to possible residual microstructure after melt during first and second shock transit in Be and HDC have been completed. Results so far suggest both Be and HDC can remain ablator choices and have guided pulse shaping designs.

Landen, O L; Bradley, D K; Braun, D G; A.Smalyuk, V; Hicks, D G; Celliers, P M; Prisbrey, S; Page, R; Boehly, T R; Haan, S W; Munro, D H; Wallace, R G; Nikroo, A; Hamza, A; Biener, J; Wild, C; Woerner, E; Olson, R E; Rochau, G A; Knudson, M; Wilson, D C; Robey, H F; Collins, G W; Ho, D; Edwards, J; Marinak, M M; Hammel, B A; Meyerhofer, D D; MacGowan, B J

2007-09-05T23:59:59.000Z

196

THERMAL ANNEALING OF ZNO FILMS USING HIGH-DENSITY PLASMA ARC LAMPS  

Science Conference Proceedings (OSTI)

Nanostructured materials are rarely synthesized with appropriate phase and/or morphology. In this study, critical additional of as-synthesized nanostructured materials, such as annealing and/or activation of dopants, are addressed using infrared plasma arc lamps (PAL) over areas as large as 1,000 cm2. The broad spectral range of the PAL and the spectral variation of light absorption in nanostructured materials make the selection of processing parameters extremely difficult, posing a major technological barrier. In this study, the measurement of the surface temperature using various techniques for ZnO films on crystalline silicon wafers is discussed. An energy transport model for the simulation of rapid thermal processing using PAL is presented. The experimental and computational results show that the surface temperature cannot be measured directly and that computer simulation results are an effective tool for obtaining accurate data on processing temperatures.

Sabau, Adrian S [ORNL; Dinwiddie, Ralph Barton [ORNL; Xu, Jun [ORNL; Angelini, Joseph Attilio [ORNL; Harper, David C [ORNL

2011-01-01T23:59:59.000Z

197

LLNL/Linde 875 bar Liquid Hydrogen Pump for High Density Cryogenic...  

NLE Websites -- All DOE Office Websites (Extended Search)

3. Lemmon, E.W., McLinden, M.O., Huber, M.L., "REFPROP: NIST reference fluid thermodynamic and transport properties," National Institute of Standards and Technology, 2004....

198

Electrical protein detection in cell lysates using high-density peptide-aptamer microarrays  

E-Print Network (OSTI)

of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT, UK. †MRC Cancer Cell Unit, Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 2XZ, UK. ‡Leeds Institute of Molecular Medicine, St James’ University Hospital, Leeds LS9 7TF, UK... . Correspondence: Christoph Wälti. Email: c.walti@leeds.ac.uk Abstract Background: The dissection of biological pathways and of the molecular basis of disease requires devices to analyze simultaneously a staggering number of protein isoforms in a given cell under...

Evans, David; Johnson, Steve; Laurenson, Sophie; Davies, Giles; Ko Ferrigno, Paul; Walti, Christoph

2008-01-31T23:59:59.000Z

199

DEGAS 2 Neutral Transport Modeling of High Density, Low Temperature Plasmas  

E-Print Network (OSTI)

of Atomic Energy 1 Kurchatov Sq., Moscow 123098, Russia # Presently at McKinsey & Company, Inc., London SW1Y

200

Connecting neutron star observations to the high density equation of state of quasi-particle model  

E-Print Network (OSTI)

The observation of $1.97\\pm0.04$ solar-mass neutron-like star gives constraint on the equation of state (EOS) of cold, condensed matter. In this paper, the EOS for both pure quark star and hybrid star with a quark core described by quasi-particle model are considered. The parameters of quasi-particle model which affect the mass of both quark star and hybrid star can be constrained by the observation.

Yan Yan; Jing Cao; Xin-Lian Luo; Wei-Min Sun; Hongshi Zong

2012-12-08T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

High resolution and high density ion beam lithography employing HSQ resist  

Science Conference Proceedings (OSTI)

In the early stages of focused ion beam (FIB) development, ion beam lithography (IBL) employing organic resists showed potential advantages over electron beam lithography (EBL) (most notably less proximity effects and higher sensitivity [1,2]). However, ... Keywords: FIB, HSQ, IBL, LMIS, Nano patterning, Resist

L. Bruchhaus; S. Bauerdick; L. Peto; U. Barth; A. Rudzinski; J. Mussmann; J. Klingfus; J. Gierak; H. HöVel

2012-09-01T23:59:59.000Z

202

THE PHYSICS OF HIGH-DENSITY, HIGH-REVERSED-FIELD PINCH PLASMAS  

E-Print Network (OSTI)

. . . even more May it continue Lastly, I'd like to thank Agent Jack Bauer of the Counter-Terrorist Unit. You

Wisconsin at Madison, University of

203

High density packings of equal circles in rectangles with variable aspect ratio  

Science Conference Proceedings (OSTI)

Arranging a fixed number n of equal non-overlapping circles in a rectangle with variable aspect ratio is a non-standard packing problem. It arises if one has to decide how a certain number of circular items should be packed into a rectangular box when ... Keywords: Circle packing, Container design, Hexagonal grid, Rectangular container, Variable aspect ratio

E. Specht

2013-01-01T23:59:59.000Z

204

Fabrication and characterization of a new high density Sc/Si multilayer sliced grating  

SciTech Connect

State of the art soft x-ray spectroscopy techniques like Resonant Inelastic X-ray Scattering (RIXS) require diffraction gratings which can provide extremely high spectral resolution of 105-106. This problem may be addressed with a sliced multilayer grating with an ultra-high groove density (up to 50,000 mm-1) proposed in the recent publication [Voronov, D. L., Cambie, R., Feshchenko, R. M., Gullikson, E., Padmore, H. A., Vinogradov, A. V., Yashchuk, V. V., Proc. SPIE 6705, 67050E (2007)]. It has been suggested to fabricate such a grating by deposition of a soft x-ray multilayer on a substrate which is a blazed saw-tooth grating (echellette) with low groove density. Subsequent polishing applied to the coated grating removes part of the coating and forms an oblique-cut multiline structure that is a sliced multilayer grating. The resulting grating has a short-scale periodicity of lines (bilayers), which is defined by the multilayer period and the oblique-cut angle. We fabricated and tested a Sc/Si multilayer sliced grating suitable for EUV applications, which is a first prototype based on the suggested technique. In order to fabricate an echellette substrate, we used anisotropic KOH etching of a Si wafer. The etching regime was optimized to obtain smooth and flat echellette facets. A Sc/Si multilayer was deposited by dc-magnetron sputtering, and after that it was mechanically polished using a number of diamond pastes. The resulting sliced grating prototype with ~;;270 nm line period has demonstrated a dispersive ability in the 41-49 nm photon wavelength range with a diffraction efficiency of ~;;7percent for the optimized 38th order assigned to the echellette grating of 10 mu m period.

Advanced Light Source; Voronov, Dmitriy L.; Cambie, Rossana; Gullikson, Eric; Yashchuk, Valeriy; Padmore, Howard; Pershin, Yuri; Ponomarenko, Alexander; Kondratenko, Valeriy

2008-07-21T23:59:59.000Z

205

High Density Three-Dimensional Nanomagnetic Logic Systems Composed of Material with Crystalline Anisotropy  

E-Print Network (OSTI)

A. Symbols B Magnetic induction E: Energy H: Magnetic fieldfrom the total energy of the magnetic system according toeff :Effective magnetic field J: Dipolar coupling energy k:

Tian, Yuan

2013-01-01T23:59:59.000Z

206

High density growth of T7 expression strains with auto-induction option  

DOE Patents (OSTI)

A bacterial growth medium for promoting auto-induction of transcription of cloned DNA in cultures of bacterial cells grown batchwise is disclosed. The transcription is under the control of a lac repressor. Also disclosed is a bacterial growth medium for improving the production of a selenomethionine-containing protein or polypeptide in a bacterial cell, the protein or polypeptide being produced by recombinant DNA techniques from a lac or T7lac promoter, the bacterial cell encoding a vitamin B12-dependent homocysteine methylase. Finally, disclosed is a bacterial growth medium for suppressing auto-induction of expression in cultures of bacterial cells grown batchwise, said transcription being under the control of lac repressor.

Studier, F. William (Stony Brook, NY)

2010-07-20T23:59:59.000Z

207

High density growth of T7 expression strains with auto-induction option  

DOE Patents (OSTI)

A method for promoting and suppressing auto-induction of transcription of a cloned gene 1 of bacteriophage T7 in cultures of bacterial cells grown batchwise is disclosed. The transcription is under the control of a promoter whose activity can be induced by an exogenous inducer whose ability to induce said promoter is dependent on the metabolic state of said bacterial cells.

Studier, F. William

2013-03-19T23:59:59.000Z

208

Short-range wireless sensor networks for high density seismic monitoring  

E-Print Network (OSTI)

new oil and gas reservoir. The envisioned production peak of current oil and gas reservoirs is pushing for sub-surface diagnostic (for small earthquake monitoring) and exploration (for new oil and gas Receivers time Delivery time Source Receivers Shot Gas/Oil/Water Gas/Oil/Water Dip-slip fault Active seismic

Spagnolini, Umberto

209

Alcator C-Mod is the only high-field, high-density divertor tokamak...  

NLE Websites -- All DOE Office Websites (Extended Search)

Canberra (HELIAC) * ENEA - Frascatti, Italy * University of Quebec * Institute for Plasma Research, Gandhinagar,India * Ad Astra Rocket Company, Liberia,Costa Rica Appendix A...

210

High Density Three-Dimensional Nanomagnetic Logic Systems Composed of Material with Crystalline Anisotropy  

E-Print Network (OSTI)

List of Tables Table 1: Truth table of the MQCA majority14 Table 2: The truth table of our four-layer magnetic logicis NOR or NAND. The truth table of the MQCA majority gate is

Tian, Yuan

2013-01-01T23:59:59.000Z

211

Catalyzed Nano-Framework Stablized High Density Reversible Hydrogen Storage Systems  

Science Conference Proceedings (OSTI)

A wide range of high capacity on-board rechargeable material candidates have exhibited non-ideal behavior related to irreversible hydrogen discharge / recharge behavior, and kinetic instability or retardation. This project addresses these issues by incorporating solvated and other forms of complex metal hydrides, with an emphasis on borohydrides, into nano-scale frameworks of low density, high surface area skeleton materials to stabilize, catalyze, and control desorption product formation associated with such complex metal hydrides. A variety of framework chemistries and hydride / framework combinations were investigated to make a relatively broad assessment of the method'Â?s potential. In this project, the hydride / framework interactions were tuned to decrease desorption temperatures for highly stable compounds or increase desorption temperatures for unstable high capacity compounds, and to influence desorption product formation for improved reversibility. First principle modeling was used to explore heterogeneous catalysis of hydride reversibility by modeling H{sub 2} dissociation, hydrogen migration, and rehydrogenation. Atomic modeling also demonstrated enhanced NaTi(BH{sub 4}){sub 4} stabilization at nano-framework surfaces modified with multi-functional agents. Amine multi-functional agents were found to have more balanced interactions with nano-framework and hydride clusters than other functional groups investigated. Experimentation demonstrated that incorporation of Ca(BH{sub 4}){sub 2} and Mg(BH{sub 4}){sub 2} in aerogels enhanced hydride desorption kinetics. Carbon aerogels were identified as the most suitable nano-frameworks for hydride kinetic enhancement and high hydride loading. High loading of NaTi(BH{sub 4}){sub 4} ligand complex in SiO{sub 2} aerogel was achieved and hydride stability was improved with the aerogel. Although improvements of desorption kinetics was observed, the incorporation of Ca(BH{sub 4}){sub 2} and Mg(BH{sub 4}){sub 2} in nano-frameworks did not improve their H{sub 2} absorption due to the formation of stable alkaline earth B12H12 intermediates upon rehydrogenation. This project primarily investigated the effect of nano-framework surface chemistry on hydride properties, while the effect of pore size is the focus area of other efforts (e.g., HRL, Sandia National Laboratories (SNL) etc.) within the Metal Hydride Center of Excellence (MHCoE). The projects were complementary in gaining an overall understanding of the influence of nano-frameworks on hydride behavior.

Xia Tang , Susanne M. Opalka , Daniel A. Mosher, Bruce L. Laube, Ronald J. Brown, Thomas H. Vanderspurt, Sarah Arsenault, Robert Wu, Jamie Strickler, Ewa. Ronnebro, Tim. Boyle and Joseph Cordaro

2010-06-30T23:59:59.000Z

212

A laser-driven target of high-density nuclear polarized hydrogen gas  

E-Print Network (OSTI)

We report the best figure-of-merit achieved for an internal nuclear polarized hydrogen gas target and a Monte Carlo simulation of spin-exchange optical pumping. The dimensions of the apparatus were optimized using the simulation and the experimental results were in good agreement with the simulation. The best result achieved for this target was 50.5% polarization with 58.2% degree of dissociation of the sample beam exiting the storage cell at a hydrogen flow rate of $1.1\\times 10^{18}$ atoms/s.

Clasie, B; Dutta, D; Gao, H; Seely, J; Xu, W

2006-01-01T23:59:59.000Z

213

SubstrateSubstrate Commercially available high density -alumina plate (14x14 mm2)  

E-Print Network (OSTI)

supported on MOx·H2O supported on carbon Pt MOx e- carbon H+ OO H+ H+ Nafion H+ O2 O H2O Catalyst development via electrochemical and structural analysis #12;Naval Research Lab DOE review 19May2003 Pt-MOx

Azad, Abdul-Majeed

214

Anomalous evolution of Ar metastable density with electron density in high density Ar discharge  

SciTech Connect

Recently, an anomalous evolution of argon metastable density with plasma discharge power (electron density) was reported [A. M. Daltrini, S. A. Moshkalev, T. J. Morgan, R. B. Piejak, and W. G. Graham, Appl. Phys. Lett. 92, 061504 (2008)]. Although the importance of the metastable atom and its density has been reported in a lot of literature, however, a basic physics behind the anomalous evolution of metastable density has not been clearly understood yet. In this study, we investigated a simple global model to elucidate the underlying physics of the anomalous evolution of argon metastable density with the electron density. On the basis of the proposed simple model, we reproduced the anomalous evolution of the metastable density and disclosed the detailed physics for the anomalous result. Drastic changes of dominant mechanisms for the population and depopulation processes of Ar metastable atoms with electron density, which take place even in relatively low electron density regime, is the clue to understand the result.

Park, Min; Chang, Hong-Young [Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of); You, Shin-Jae; Kim, Jung-Hyung [Center for Vacuum Technology, Korea Research Institute of Standards and Science, Daejeon, 305-306 (Korea, Republic of); Shin, Yong-Hyeon

2011-10-15T23:59:59.000Z

215

DESTRUCTION OF NEUTRAL PARTICLES IN A DEVICE FOR PRODUCING A HIGH DENSITY PLASMA  

DOE Patents (OSTI)

A method and apparatus are described for burning out neutral particles in an evacuated region and within a strong magnetic field. The method comprises injecting energetic molecular ions into the region perpendicular to the magnetic field and into the path of a dissociating, energetic arc discharge, the atomic ions formed in the dissociating process being trapped by the magnetic field, and then increasing the value of the trapped atomic ion current to such a value that the neutral particles are destroyed faster than they are formed, thereby causing a dense, energetic plasma to be built up and sustained by the magnetic field. (AEC)

Simon, A.

1962-05-01T23:59:59.000Z

216

COMMENTS ON ANOMALOUS EFFECTS IN CHARGING OF PD POWDERS WITH HIGH DENSITY HYDROGEN ISOTOPES  

DOE Green Energy (OSTI)

In Kitamura, et al, Pd-containing materials are exposed to isotopes of hydrogen and anomalous results obtained. These are claimed to be a replication of another experiment conducted by Arata and Zhang. Erroneous basic assumptions are pointed out herein that alter the derived conclusions significantly. The final conclusion is that the reported results are likely normal chemistry combined with noise. Thus the claim to have proven that cold fusion is occurring in these systems is both premature and unlikely.

Shanahan, K.

2009-10-01T23:59:59.000Z

217

Testing of a High-Density Concrete as Neutron Shielding Material  

Science Conference Proceedings (OSTI)

Shielding / Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 2) / Radiation Protection

Eduardo Gallego; Alfredo Lorente; Héctor René Vega-Carrillo

218

Fermionic superfluids : from cold atoms to high density QCD : gapless (breached pair) superfluidity and kaon condensation  

E-Print Network (OSTI)

In this thesis, we explore aspects of fermionic superfluidity through a mean-field approximation. Our framework is extremely general, includes both pairing and Hartree-Fock contributions, and is derived rigorously from a ...

Forbes, Michael McNeil

2005-01-01T23:59:59.000Z

219

High-Resolution Simulations of Gas-Solids Jet Penetration Into a High Density Riser Flow  

SciTech Connect

High-resolution simulations of a gas-solids jet in a 0.3 m diameter and 15.9 m tall circulating fluidized bed (CFB) riser were conducted with the open source software-MFIX. In the numerical simulations, both gas and solids injected through a 1.6 cm diameter radial-directed tube 4.3 m above the bottom distributor were tracked as tracers, which enable the analysis of the characteristics of a two-phase jet. Two jetting gas velocities of 16.6 and 37.2 m/s were studied with the other operating conditions fixed. Reasonable flow hydrodynamics with respect to overall pressure drop, voidage, and solids velocity distributions were predicted. Due to the different dynamic responses of gas and particles to the crossflow, a significant separation of gas and solids within the jet region was predicted for both cases. In addition, the jet characteristics based on tracer concentration and tracer mass fraction profiles at different downstream levels are discussed. Overall, the numerical predictions compare favorably to the experimental measurements made at NETL.

Li, Tingwen

2011-05-01T23:59:59.000Z

220

High density hexagonal boron nitride prepared by hot isostatic pressing in refractory metal containers  

DOE Patents (OSTI)

Boron nitride powder with less than or equal to the oxygen content of starting powder (down to 0.5% or less) is hot isostatically pressed in a refractory metal container to produce hexagonal boron nitride with a bulk density greater than 2.0 g/cc. The refractory metal container is formed of tantalum, niobium, tungsten, molybdenum or alloys thereof in the form of a cansister or alternatively plasma sprayed or chemical vapor deposited onto a powder compact. Hot isostatic pressing at 1800{degrees}C and 30 KSI (206.8 MPa) argon pressure for four hours produces a bulk density of 2.21 g/cc. Complex shapes can be made.

Hoenig, C.L.

1990-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

High Density Hydrogen Storage Systems Demonstration Using NaAIH4  

NLE Websites -- All DOE Office Websites (Extended Search)

Density Hydrogen Storage Density Hydrogen Storage System Demonstration Using NaAlH 4 Complex Compound Hydrides D. Mosher, X. Tang, S. Arsenault, B. Laube, M. Cao, R. Brown, S. Saitta, J. Costello United Technologies Research Center East Hartford, Connecticut Report to the U.S. Department of Energy (DOE) Contract Number: DE-FC36-02AL-67610 December 19, 2006 * * Presented to the DOE and the FreedomCAR & Fuel Partnership Hydrogen Storage Tech Team This presentation does not contain proprietary or confidential information 2 Overview Objective: Identify and overcome the critical technical barriers in developing complex hydride based storage systems, especially those which differ from conventional metal hydride systems, to meet DOE system targets. Approach: Design, fabricate and test a sequence of subscale and full scale

222

Fueling With Edge Recycling to High Density in DIII-D (A27324)  

E-Print Network (OSTI)

Proc. Of 20th Plasma Surface Interactions In Controlled Fusion Devices, Aachen, Germany (2012); To Be Published In J. Nucl. Mater.20th International Conference on Plasma Surface Interactions in Controlled Fusion Devices Aachen, DE, 2012999619115

Leonard, A.W.

2012-06-11T23:59:59.000Z

223

Biomaterials Engineering  

Science Conference Proceedings (OSTI)

Oct 20, 2011 ... Developing Specific Fluorescent Chemo-Sensors for Detecting Nitric ... fold increase in fatigue life compared to HA powder in high density polyethylene. ... led on rats, strongly presuming its biocompatibility and resorbability.

224

u.s. DEPARHvIENT OF ENERGY EERE PROJECT MANAG EMENT CEN T ER  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

to withstand cracking from temperature changes, will use high density polyethylene pipe that is heat fused at the joints to minimize the risk of leaks, and will use a...

225

Defect Analysis of Vehicle Compressed Natural Gas Composite Cylinder  

NLE Websites -- All DOE Office Websites (Extended Search)

Defect Analysis of Vehicle Defect Analysis of Vehicle Compressed Natural Gas Composite Cylinder A China Paper on Type 4 Cylinder, translated and presented by J. P. Hsu, PhD, Smart Chemistry Reason for Defect Analysis of CNG Composite Cylinder * Safety Issue - Four explosion accidents of auto used CNG composite material cylinders resulting huge personnel and vehicles loss. * Low Compliance Rate - Inspect 12119 Auto used CNG composite cylinders and only 3868 are qualified with compliance rate of 32%. Plastic CNG Composite Cylinder Process Fitting Internal Plastic Liner External Composite Layer Metal Fitting HDPE Cylinder Liner * HDPE has a high density, great stiffness, good anti-permeability and high melting point, but poor environmental stress cracking Resistance (ESCR). * The defects of cylinder liner quality can be

226

UV degradation of hdpe and pvc geomembranes in laboratory exposure So Paulo State University (UNESP) -Ilha Solteira (Brazil)  

E-Print Network (OSTI)

University (UNESP) - Ilha Solteira (Brazil) Bueno, B.S. University of State of São Paulo (USP) at São Carlos (Brazil) Zornberg, J.G. University of Texas (UT) at Austin (USA) Keywords: UV degradation, weathering International Conference on Geosynthetics, Brazil, 2010 821 3 #12;were used like a guide: ASTM D638 (Standard

Zornberg, Jorge G.

227

Design and analysis of recycled content sign blanks  

E-Print Network (OSTI)

This report documents a study of the feasibility of using sign blanks constructed of reclaimed materials instead of conventional high-grade plywood and aluminum. This study presents the engineering techniques necessary for judicious use of recycled materials in roadside sign applications. Various types of recycled materials were solicited from commercial manufacturers and subjected to an array of laboratory tests and numerical simulations. Materials that were received were manufactured from a variety of materials including high density polyethylene (HDPE), polycarbonate, polyvinyl chloride, and calcium carbonate. This study encompasses analysis, performance, and properties of tested materials. A total of seven recycled materials were tested in flexure, uni-axial tension, creep, free vibration, and exposure to ultraviolet radiation. Corollaries of this study are development of performance-based specifications and a new design procedure for sign blanks. A preliminary design procedure is developed for two-pole supported and tee-pole supported sign substrates. The procedure is based on simple mechanics of materials bending formulae for a variety of deflection criteria. Design environmental loads are determined using ASCE 7-95 Minimum Design Loadsfor Buildings and Other Structures. A design example for a two-pole sign is performed for one of the recycled materials collected during the study. Adequacy of the preliminary design is checked using a finite element model of the structure in conjunction with a set of performance-based specifications. In addition, a combined laboratory and numerical procedure for duplicating wind induced vibrations is developed using a frequency domain-based method. Numerical simulation of a wind loading is carried out using two dynamic wind events. The response of several locations on the sign are recorded and converted to the frequency domain using fast Fourier transform. Simultaneously, a full-scale laboratory model is constructed and an electromechanical actuator is connected to the supporting structure. The laboratory structure is struck at the actuator connection with the same impact hammer used to analyze the field model. From a complex frequency response function an actuator time history is produced that elicits a structural response at a particular node that closely approximates the response obtained by finite element analysis. This procedure is capable of modeling dynamic response in the substrate to nearly any dynamic wind event, including impulse events caused by large highway vehicles. A brief listing of estimated cost for some of the recycled materials that were tested in the laboratory is included for quantities varying by order of magnitude from 1,000 to 1,000,000 sheets.

Harrison, Ben Frank

1996-01-01T23:59:59.000Z

228

High-Intensity and High-Density Charge-Exchange Injection Studies into the CERN PS Booster at Intermediate Energies  

E-Print Network (OSTI)

For the high brilliance LHC ultimate beam and the high intensity CNGS beam, single batch injections into the CERN Proton Synchrotron (PS) will be used to increase the overall machine intensity compared with the present double batch injections. Charge-exchange injection into the PS Booster with a new linac at intermediate energies is thus examined. A key parameter to consider is the energy dependence of beam incoherent tune shifts at injection. Increasing the linac energy from the present 50 MeV to 160 MeV should yield a safer tune shift. For each PS Booster ring, a charge-exchange injection scheme is envisaged inside a proper straight section, redesigned with new bends to make a local bump and using the existing fast bump magnets for horizontal phase-space painting. ACCSIM simulations for charge-exchange injection at 160 MeV have been investigated for both LHC and CNGS beams. After optimizing the parameters that are used for the space charge tracking routines, the results of the simulations agree well with ex...

Martini, M

2004-01-01T23:59:59.000Z

229

Interaction between a high density-low temperature plasma and a frozen hydrogen pellet in a railgun injector  

DOE Green Energy (OSTI)

A model has been developed which describes the ablation process of frozen hydrogen pellets in an electromagnetic railgun. The model incorporates the neutral gas shielding model in which the pellet surface is heated by incident electrons from the plasma arc. The heated surface then ablates, forming a neutral cloud which attenuates the incoming electrons. The energy lost in the cloud by the electrons heats the ablatant material as it flows into the plasma arc. Under steady-state conditions, a scaling law for the ablation rate was derived as a function of plasma-arc temperature and density. In addition, flow conditions and the criteria for the existence of a steady-state solution were formulated and subsequently examined under simplifying assumptions. Comparison with experimentally observed ablation rates shows good qualitative agreement.

Grapperhaus, M.J. [Illinois Univ., Urbana, IL (United States)

1993-10-01T23:59:59.000Z

230

Design of low-power permanent-magnet synchronous motor for use in high-density heat pump  

E-Print Network (OSTI)

An analytical model for the functionality of a permanent-magnet synchronous motor is developed. Taking as input a specific geometry, it predicts steady-state losses of a design at an average rate of 0.85 seconds per analysis, ...

Jenicek, David P. (David Pierre)

2011-01-01T23:59:59.000Z

231

Advanced Metal-Hydrides-Based Thermal Battery: A New Generation of High Density Thermal Battery Based on Advanced Metal Hydrides  

Science Conference Proceedings (OSTI)

HEATS Project: The University of Utah is developing a compact hot-and-cold thermal battery using advanced metal hydrides that could offer efficient climate control system for EVs. The team’s innovative designs of heating and cooling systems for EVs with high energy density, low-cost thermal batteries could significantly reduce the weight and eliminate the space constraint in automobiles. The thermal battery can be charged by plugging it into an electrical outlet while charging the electric battery and it produces heat and cold through a heat exchanger when discharging. The ultimate goal of the project is a climate-controlling thermal battery that can last up to 5,000 charge and discharge cycles while substantially increasing the driving range of EVs, thus reducing the drain on electric batteries.

None

2011-12-01T23:59:59.000Z

232

High Density n-Si/n-TiO2 Core/Shell Nanowire Arrays with Enhanced Photoactivity  

DOE Green Energy (OSTI)

There are currently great needs to develop low-cost inorganic materials that can efficiently perform solar water splitting as photoelectrolysis of water into hydrogen and oxygen has significant potential to provide clean energy. We investigate the Si/TiO2 nanowire heterostructures to determine their potential for the photooxidation of water. We observed that highly dense Si/TiO2 core/shell nanowire arrays enhanced the photocurrent by 2.5 times compared to planar Si/TiO2 structure due to their low reflectance and high surface area. We also showed that n-Si/n-TiO2 nanowire arrays exhibited a larger photocurrent and open circuit voltage than p-Si/n-TiO2 nanowires due to a barrier at the heterojunction.

Hwang, Yun Jeong; Boukai, Akram; Yang, Peidong

2008-11-15T23:59:59.000Z

233

Expansion of a plasma layer near a barrier irradiated by a laser in high-density gases  

SciTech Connect

The time dependence of shock waves in a laser-produced plasma are studied for a Nd laser with an energy of 80 J. (AIP)

Nemchinov, I.V.; Petrukhin, A.I.; Pleshanov, Y.E.; Rybakov, V.A.

1979-08-01T23:59:59.000Z

234

Feasibility of High-Density Climate Reconstruction Based on Forest Inventory and Analysis (FIA) Collected Tree-Ring Data  

Science Conference Proceedings (OSTI)

This study introduces a novel tree-ring dataset, with unparalleled spatial density, for use as a climate proxy. Ancillary Douglas fir and piñon pine tree-ring data collected by the U.S. Forest Service Forest Inventory and Analysis Program (FIA ...

R. Justin DeRose; Shih-Yu Wang; John D. Shaw

2013-02-01T23:59:59.000Z

235

Utilizing upper hybrid resonance for high density plasma production and negative ion generation in a downstream region  

Science Conference Proceedings (OSTI)

Localized wave-induced resonances are created by microwaves launched directly into a multicusp (MC) plasma device in the k Up-Tack B mode, where k is the wave vector and B is the static magnetic field. The resonance zone is identified as upper hybrid resonance (UHR), and lies r = {approx}22 mm away from the MC boundary. Measurement of radial wave electric field intensity confirms the right hand cutoff of the wave (r = 22.5-32.1 mm) located near the UHR zone. A sharp rise in the corresponding electron temperature in the resonance region by {approx}13 eV from its value away from resonance at r = 0, is favorable for the generation of vibrationally excited molecules of hydrogen. A transverse magnetic filter allows cold electrons ({approx}1-2 eV) to pass into the downstream region where they generate negative ions by dissociative attachment. Measurements of electron energy distribution function (EEDF) support the viewpoint. H{sup -} current density of {approx}0.26 mA/cm{sup 2} is obtained at a wave power density of {approx}3 W/cm{sup 2} at 2.0 mTorr pressure, which agrees reasonably well with results obtained from a steady state model using particle balance equations.

Sahu, Debaprasad; Bhattacharjee, Sudeep [Department of Physics, Indian Institute of Technology, Kanpur 208016 (India)

2012-09-15T23:59:59.000Z

236

ANTHEM simulation of the early time magnetic field penetration of the plasma surrounding a high density Z-pinch  

SciTech Connect

The early time penetration of magnetic field into the low density coronal plasma of a Z-pinch fiber is studied with the implicit plasma simulation code ANTHEM. Calculations show the emission of electrons from the cathode, pinching of the electron flow, magnetic insulation of the electrons near the anode, and low density ion blow off. PIC-particle ion calculations show a late time clumping of the ion density not seen with a fluid ion treatment. 4 refs., 4 figs.

Mason, R.J.

1989-01-01T23:59:59.000Z

237

Threshold jumping and wrap-around scan techniques toward efficient tag identification in high density RFID systems  

Science Conference Proceedings (OSTI)

With the emergence of wireless RFID technologies, the problem of Anti-Collision has been arousing attention and instigated researchers to propose different heuristic algorithms for advancing RFID systems operated in more efficient manner. However, there ... Keywords: Query tree, Tag anti-collision, Threshold jumping, Wrap-around scan

Ching-Hsien Hsu; Han-Chieh Chao; Jong Hyuk Park

2011-09-01T23:59:59.000Z

238

Innovative Technique Accelerates Waste Disposal at Idaho Site | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Innovative Technique Accelerates Waste Disposal at Idaho Site Innovative Technique Accelerates Waste Disposal at Idaho Site Innovative Technique Accelerates Waste Disposal at Idaho Site May 15, 2013 - 12:00pm Addthis A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. Macro-packs from the Idaho site are shown here safely and compliantly disposed. Macro-packs from the Idaho site are shown here safely and compliantly disposed. A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. Macro-packs from the Idaho site are shown here safely and compliantly disposed. IDAHO FALLS, Idaho - An innovative treatment and disposal technique is enabling the Idaho site to accelerate shipments of legacy nuclear waste for

239

Innovative Technique Accelerates Waste Disposal at Idaho Site | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Innovative Technique Accelerates Waste Disposal at Idaho Site Innovative Technique Accelerates Waste Disposal at Idaho Site Innovative Technique Accelerates Waste Disposal at Idaho Site May 15, 2013 - 12:00pm Addthis A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. Macro-packs from the Idaho site are shown here safely and compliantly disposed. Macro-packs from the Idaho site are shown here safely and compliantly disposed. A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. Macro-packs from the Idaho site are shown here safely and compliantly disposed. IDAHO FALLS, Idaho - An innovative treatment and disposal technique is enabling the Idaho site to accelerate shipments of legacy nuclear waste for

240

Micro-Scratching of UHMW Polyethylene Surfaces  

Science Conference Proceedings (OSTI)

Design of Pre-Weakening and Evaluation of Structural Safety for Explosive ... Crystallization Temperature of Pd-Cu-Si System Using Integrated Thin Film Samples ... Mechanical Properties of 5083 Aluminium Welds after Manual and Automatic ...

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

BEST MANAGEMENT PRACTICES & GUIDANCE MANUAL: DESERT  

E-Print Network (OSTI)

is not a water well. Closed-loop bores are drilled, a high-density polyethylene plastic u-bend tube is put in place, and then the hole is immediately grouted. The work to drill, install tubing, and grout the hole. Noise pollution in local areas could be reduced where steam boiler or gas turbines are used less

242

Analysis of pulsed high-density HBr and Cl{sub 2} plasmas: Impact of the pulsing parameters on the radical densities  

Science Conference Proceedings (OSTI)

The dynamic of charged particles in pulsed plasma is relatively well known since the 1990s. In contrast, works reporting on the impact of the plasma modulation frequency and duty cycle on the radicals' densities are scarce. In this work, we analyze the impact of these modulation parameters on the radicals' composition in Cl{sub 2} and HBr plasmas. The radicals' densities are measured by broad-band UV and vacuum-ultraviolet (VUV) absorption spectroscopy and modulated-beam mass spectrometry. We show that pulsing the rf power allows controlling the plasma chemistry and gives access to the plasma conditions that cannot be reached in continuous wave plasmas. In particular, we show that above 500 Hz, the pulsing frequency has no influence on the plasma chemistry, whereas in contrast the duty cycle is an excellent knob to control the fragmentation of the parent gas, thus the chemical reactivity of the discharge. At low duty cycle, a reduced gas fragmentation combined with a large ion flux leads to new etching conditions, compared to cw plasmas and the expected consequences on pulsed-etching processes are discussed.

Bodart, P.; Brihoum, M.; Cunge, G.; Joubert, O.; Sadeghi, N. [Laboratoire des Technologies de la Microelectronique, CNRS-LTM, 17 rue des Martyrs, Grenoble 38054 (France)

2011-12-01T23:59:59.000Z

243

An experiment to demonstrate a nitrogen recombination X-ray amplifier using high-density planar gas jet laser target. Final report  

Science Conference Proceedings (OSTI)

The results of an experiment to search for lasing in atomic transitions at x-ray energies in N{sub 2} gas target plasmas using ultra-short laser pulses is presented. Particular emphasis was placed on a search for a predicted 24.7 nm optical-field-ionization (OFI) induced lasing line from the Li-like nitrogen (N{sup 4+}, 3d {yields} 2p) transition. The excitation laser was a multi-terawatt Cr:LiSrAlF{sub 6} laser system operating at a wavelength of 825 nm and a pulse duration of 135 fs located at the Lawrence Livermore National Laboratory. Experimental conditions were optimized and a series of Li-like (including the 24.7 rm N{sup 4+} 3d {yields} 2p) lines were observed and identified. Further experimental studies are required before an attempt at measurement of any potential lasing gain can be made.

Pronko, J.G.; Kohler, D.

1996-03-31T23:59:59.000Z

244

Validation of TRMM and Other Rainfall Estimates with a High-Density Gauge Dataset for West Africa. Part II: Validation of TRMM Rainfall Products  

Science Conference Proceedings (OSTI)

Gauge data from a West African network of 920 stations are used to assess Tropical Rainfall Measuring Mission (TRMM) satellite and blended rainfall products for 1998. In this study, mean fields, scattergrams, and latitudinal transects for the ...

S. E. Nicholson; B. Some; J. McCollum; E. Nelkin; D. Klotter; Y. Berte; B. M. Diallo; I. Gaye; G. Kpabeba; O. Ndiaye; J. N. Noukpozounkou; M. M. Tanu; A. Thiam; A. A. Toure; A. K. Traore

2003-10-01T23:59:59.000Z

245

Method of forming high density oxide pellets by hot pressing at 50$sup 0$ to 100$sup 0$C above the cubic to monoclinic phase transformation temperature  

DOE Patents (OSTI)

A process for low temperature sintering of rare earth and actinide oxides which have a cubic to monoclinic transformation is described. The process involves hot pressing a powder compact at a temperature just above the transformation temperature. (auth)

Pasto, A.E.

1975-08-01T23:59:59.000Z

246

CX-002538: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

538: Categorical Exclusion Determination 538: Categorical Exclusion Determination CX-002538: Categorical Exclusion Determination Tangent Grant Application for American Recovery and Reinvestment Act Business Development Program CX(s) Applied: B5.1 Date: 05/27/2010 Location(s): Aurora, Illinois Office(s): Energy Efficiency and Renewable Energy, Golden Field Office The Illinois Department of Commerce and Economic Opportunity is providing $1,599,000 in Recovery Act funds to Tangent Technologies, LLC (Tangent) to offset Tangent's new plastics material processing operation within its 130,000 square foot industrial park facility at 1001 Sullivan Road, Aurora, Illinois. The new processing operation will help Tangent recover 17,280 tons per year (4,000 pounds per hour) of post consumer HDPE (High-Density

247

Greek petrochemicals finds buyers for plants  

SciTech Connect

Greek Petrochemicals (Athens) has found buyers for two polyethylene (PE) plants it ordered from U.K. contractors 10 years ago and that are currently stored in Manchester. It is understood that Thai Polyethylene (Bangkok) has been selected to acquire the 70,000-m.t./year ICI process low-density PE plant engineered by Simon-Carves. Reliance Industries is in talks to by the 50,000-m.t./year Union Carbide Unipol process high-density PE unit. The plants are to be installed at Map Ta Put, Thailand and Hazira, India, respectively.

Alperowicz, N.

1993-02-17T23:59:59.000Z

248

Molecular simulation of crystal growth in alkane and polyethylene melts  

E-Print Network (OSTI)

Molecular simulation has become a very powerful tool for understanding the process of polymer crystallization. By using carefully constructed simulations, one can independently observe the two phenomena responsible for ...

Waheed, Numan

2005-01-01T23:59:59.000Z

249

Adsorption of Polypropylene and Polyethylene on Liquid Chromatographic  

E-Print Network (OSTI)

that use mo- lecular dynamics (MD) simulations have been put forward.14,22Ã?32 The groups of Garrison.; Reisler, H.; Wittig, C. Chem. Phys. Lett. 2000, 326, 11. (34) Johari, G. P.; Andersson, O. Thermochim

Li, Jing

250

Atomistic simulations of octacyclopentyl polyhedral oligomeric silsesquioxane polyethylene nanocomposites  

E-Print Network (OSTI)

As the scientific community develops the ability to create composites which incorporate nanoscopic filler particles, the detailed atomic arrangement and atomic interactions become significant in determining the composite ...

Capaldi, Franco Mario, 1977-

2005-01-01T23:59:59.000Z

251

I25 Antioxidant Extracted from Clove Oil for Polyethylene Film  

Science Conference Proceedings (OSTI)

D14 Gold Nanoparticles in Red Ruby Glasses Used for Decoration in Thailand · D15 Soft Magnetic Properties of Nanocrystalline Fe-based P/M Cores Mixed ...

252

Graphene Reinforced Ultra High Molecular Weight Polyethylene for ...  

Science Conference Proceedings (OSTI)

UHMWPE is the clinically used acetabular cup liner material for last few ... Effect of P2O5 on sintering behavior of Na2O-CaO–Al2O3-SiO2 glass ceramic system.

253

Femtosecond Laser Direct Joining of Copper with Polyethylene ...  

Science Conference Proceedings (OSTI)

Direct Colloidal Joining and Co-firing for Anode-Supported SOFCs · Dissimilar Materials Joining · Effect of Age Hardening on Corrosion Behavior of Friction Stir

254

Recycling of Cross-linked Polyethylene Cable Waste via Mechanical ...  

Science Conference Proceedings (OSTI)

Cable industry in UAE contributes in large amount of plastic waste, where the .... Production of Heavy Pipeline Plate for Submarine Gas Transmission Lines at ...

255

Research on the Process of Alkaline Pressure Oxidation for ...  

Science Conference Proceedings (OSTI)

Characterization of Fluorescent Lamp Glass Waste Powders for ... Comparison between HDPE/Clay and HDPE/Piassava Fiber/Clay Treated by ... Effects of Rare Earth Pr on the Mechanical and Electrochemical Properties of Pb-based Alloys.

256

Reduced Building-Vat-Size-Design for Process Parameter ...  

Science Conference Proceedings (OSTI)

To minimize total powder usage of costly powders as well as processing time and ... Comparison between HDPE/Clay and HDPE/Piassava Fiber/Clay Treated by ... Pr on the Mechanical and Electrochemical Properties of Pb-based Alloys.

257

Phase Diagram Calculation and Its Applications to Materials Design ...  

Science Conference Proceedings (OSTI)

... Silver Powder Addition to Polypropylene Feedstock for Injection Molding ... Membranes Obtained from PA6/HDPE Blends Via Precipitation by Immersion.

258

Manufacture and Properties of Cold Spray Deposited Large ...  

Science Conference Proceedings (OSTI)

... Silver Powder Addition to Polypropylene Feedstock for Injection Molding ... Membranes Obtained from PA6/HDPE Blends Via Precipitation by Immersion.

259

Gridded Hourly Precipitation Analysis from High-Density Rain Gauge Network over the Yangtze–Huai Rivers Basin during the 2007 Mei-Yu Season and Comparison with CMORPH  

Science Conference Proceedings (OSTI)

Heavy rainfall hit the Yangtze–Huai Rivers basin (YHRB) of east China several times during the prolonged 2007 mei-yu season, causing the worst flood since 1954. There has been an urgent need for attaining and processing high-quality, kilometer-...

Yali Luo; Weimiao Qian; Renhe Zhang; Da-Lin Zhang

2013-08-01T23:59:59.000Z

260

Percolation and excitonic luminescence in SiO{sub 2}/ZnO two-phase structures with a high density of quantum dots randomly distributed over a spherical surface  

Science Conference Proceedings (OSTI)

The results of studies of structures formed of silica (SiO{sub 2}) nanospheres and ZnO quantum dots randomly distributed over the nanosphere surface to cover an {approx}0.45 fraction of the surface area are given. Because of the large surface energy of the spheres, the quantum dots formed on their surface are shaped as disks, wherein charge carriers are influenced by the quantum-confinement effect despite the large disk radii. The disk height is calculated by the effective mass method. The height is found to be comparable with the diameter of excitons in bulk ZnO. Analysis of the optical spectra shows that, at the above-indicated surface area covered with quantum dots, excitons in the array of quantum dots are above the percolation level. The use of some concepts of the percolation theory and knowledge of the topological arrangement of the samples make it possible to obtain quantitative parameters that describe this phenomenon.

Bondar, N. V., E-mail: jbond@iop.kiev.ua [National Academy of Sciences of Ukraine, Institute of Physics (Ukraine)

2011-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

A new electron temperature diagnostic of critical surface based on the ion acoustic decay instability in hot, high density plasma relevant to laser fusion. Semiannual report, April 1--September 29, 1994  

Science Conference Proceedings (OSTI)

The authors made analysis of the IADI experiments previously made using OMEGA laser system. They obtained two important new results: the first direct observation of the epw excited by the Ion Acoustic Decay Instability, and the first study of the IADI in a plasma that approaches laser-fusion conditions, in the sense of having a density scale length of order 1 mm and an electron temperature, T{sub e}, in excess of 1 keV. Previous observations of the epw`s have been based on the second harmonic emission, from which little can be inferred because the emission is produced by unknown pairs of epw`s, integrated in a complicated way over wavenumber space and real space. In contrast, they have directly observed the epw by using the 90{degree}, collective Thomson scattering (CTS) of a UV laser (at the third harmonic of the pump) from the epw`s. Because the ratio of probe frequency to electron plasma frequency is only about three, the scattering is collective (i.e. k{sub epw}{lambda}{sub De} is small, where k{sub epw} is the epw wave number and {lambda}{sub De} is the Debye length),m even though the scattering angle is large. The electron temperature can then be deduced from the ion sound velocity, obtained from the measurement of the frequency at which growth is maximum at the scattering wavenumber.

Mizuno, K.; DeGroot, J.S.; Drake, R.P.; Seka, W.; Craxton, R.S.; Estabrook, K.G.

1994-12-31T23:59:59.000Z

262

Validation of TRMM and Other Rainfall Estimates with a High-Density Gauge Dataset for West Africa. Part I: Validation of GPCC Rainfall Product and Pre-TRMM Satellite and Blended Products  

Science Conference Proceedings (OSTI)

Gauge data over North Africa are used to provide an assessment of satellite and blended rainfall products for 1988–94 and for 1998. A comparison is also made with the Global Precipitation Climatology Center (GPCC) gauge dataset. For the 1988–94 ...

S. E. Nicholson; B. Some; J. McCollum; E. Nelkin; D. Klotter; Y. Berte; B. M. Diallo; I. Gaye; G. Kpabeba; O. Ndiaye; J. N. Noukpozounkou; M. M. Tanu; A. Thiam; A. A. Toure; A. K. Traore

2003-10-01T23:59:59.000Z

263

Iron catalyst for preparation of polymethylene from synthesis gas and method for producing the catalyst  

DOE Patents (OSTI)

This invention relates to a process for synthesizing hydrocarbons; more particularly, the invention relates to a process for synthesizing long-chain hydrocarbons known as polymethylene from carbon monoxide and hydrogen or from carbon monoxide and water or mixtures thereof in the presence of a catalyst comprising iron and platinum or palladium or mixtures thereof which may be supported on a solid material, preferably an inorganic refractory oxide. This process may be used to convert a carbon monoxide containing gas to a product which could substitute for high density polyethylene.

Sapienza, R.S.; Slegeir, W.A.

1990-05-15T23:59:59.000Z

264

New iron catalyst for preparation of polymethylene from synthesis gas  

DOE Patents (OSTI)

This invention relates to a process for synthesizing hydrocarbons; more particularly, the invention relates to a process for synthesizing long-chain hydrocarbons known as polymethylene from carbon monoxide and hydrogen or from carbon monoxide and water or mixtures thereof in the presence of a catalyst comprising iron and platinum or palladium or mixtures thereof which may be supported on a solid material, preferably an inorganic refractory oxide. This process may be used to convert a carbon monoxide containing gas to a product which could substitute for high density polyethylene.

Sapienza, R.S.; Slegeir, W.A.

1988-03-31T23:59:59.000Z

265

Ultra high vacuum broad band high power microwave window  

DOE Patents (OSTI)

An improved high vacuum microwave window has been developed that utilizes high density polyethylene coated on two sides with SiOx, SiNx, or a combination of the two. The resultant low dielectric and low loss tangent window creates a low outgassing, low permeation seal through which broad band, high power microwave energy may be passed. No matching device is necessary and the sealing technique is simple. The features of the window are broad band transmission, ultra-high vacuum compatibility with a simple sealing technique, low voltage standing wave ratio, high power transmission and low cost.

Nguyen-Tuong, Viet (Seaford, VA); Dylla, III, Henry Frederick (Yorktown, VA)

1997-01-01T23:59:59.000Z

266

Ultra high vacuum broad band high power microwave window  

DOE Patents (OSTI)

An improved high vacuum microwave window has been developed that utilizes high density polyethylene coated on two sides with SiOx, SiNx, or a combination of the two. The resultant low dielectric and low loss tangent window creates a low outgassing, low permeation seal through which broad band, high power microwave energy may be passed. No matching device is necessary and the sealing technique is simple. The features of the window are broad band transmission, ultra-high vacuum compatibility with a simple sealing technique, low voltage standing wave ratio, high power transmission and low cost. 5 figs.

Nguyen-Tuong, V.; Dylla, H.F. III

1997-11-04T23:59:59.000Z

267

Measurements of ultracold neutron upscattering and absorption in polyethylene and vanadium  

E-Print Network (OSTI)

The study of neutron cross sections for elements used as efficient ``absorbers'' of ultracold neutrons (UCN) is crucial for many precision experiments in nuclear and particle physics, cosmology and gravity. In this context, ``absorption'' includes both the capture and upscattering of neutrons to the energies above the UCN energy region. The available data, especially for hydrogen, do not agree between themselves or with the theory. In this report we describe measurements performed at the Los Alamos National Laboratory UCN facility of the UCN upscattering cross sections for vanadium and for hydrogen in CH$_2$ using simultaneous measurements of the radiative capture cross sections for these elements. We measured $\\sigma_{up}=1972\\pm130$ b for hydrogen in CH$_2$, which is below theoretical expectations, and $\\sigma_{up} < 25\\pm9$ b for vanadium, in agreement with the expectation for the neutron heating by thermal excitations in solids.

E. I. Sharapov; C. L. Morris; M. Makela; A. Saunders; Evan R. Adamek; Yelena Bagdasarova; L. J. Broussard; C. B. Cude-Woods; Deon E Fellers; Peter Geltenbort; S. I. Hasan; K. P. Hickerson; G. Hogan; A. T. Holley; Chen-Yu Liu; M. P. Mendenhall; J. Ortiz; R. W. Pattie Jr.; D. G. Phillips; J. Ramsey; D. J. Salvat; S. J. Seestrom; E. Shaw; Sky Sjue; W. E. Sondheim; B. VornDick; Z. Wang; T. L. Womack; A. R. Young; B. A. Zeck

2013-06-05T23:59:59.000Z

268

Pyrolysis and hydrolysis of mixed polymer waste comprising polyethyleneterephthalate and polyethylene to sequentially recover  

DOE Patents (OSTI)

A process of using fast pyrolysis in a carrier gas to convert a plastic waste feedstream having a mixed polymeric composition in a manner such that pyrolysis of a given polymer to its high value monomeric constituent occurs prior to pyrolysis of other plastic components therein comprising: selecting a first temperature program range to cause pyrolysis of said given polymer to its high value monomeric constituent prior to a temperature range that causes pyrolysis of other plastic components; selecting a catalyst and support for treating said feed streams with said catalyst to effect acid or base catalyzed reaction pathways to maximize yield or enhance separation of said high value monomeric constituent in said temperature program range; differentially heating said feed stream at a heat rate within the first temperature program range to provide differential pyrolysis for selective recovery of optimum quantities of the high value monomeric constituent prior to pyrolysis of other plastic components; separating the high value monomeric constituents; selecting a second higher temperature range to cause pyrolysis of a different high value monomeric constituent of said plastic waste and differentially heating the feedstream at the higher temperature program range to cause pyrolysis of the different high value monomeric constituent; and separating the different high value monomeric constituent.

Evans, Robert J. (Lakewood, CO); Chum, Helena L. (Arvada, CO)

1998-01-01T23:59:59.000Z

269

Thermal Behaviour of W+C Ion Implanted Ultra High Molecular Weight Polyethylene (UHMWPE)  

SciTech Connect

The aim of this work was to examine thermal behavior of the surface modified Ultra High Molecular Weight Poly Ethylene (UHMWPE ) in order to understand the effect of ion implantation on the properties of this polymer which is widely used especially for biomedical applications. UHMWPE samples were Tungsten and Carbon (W+C) hybrid ion implanted by using Metal Vapour Vacuum Arc (MEVVA) ion implantation technique with a fluence of 10 17 ions/cm2 and extraction voltage of 30 kV. Untreated and surface-treated samples were investigated by Rutherford Back Scattering (RBS) Analysis, Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) Spectrometry, Thermo Gravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). This study has shown that ion implantation represents a powerful tool on modifying thermal properties of UHMWPE surfaces. This combination of properties can make implanted UHMWPE a preferred material for biomedical applications.

Urkac, E. Sokullu; Oztarhan, A. [Bioengineering Department, Ege University, Bornova, Izmir 35100 (Turkey); Tihminlioglu, F. [Chemical Engineering Department, Izmir Institute of High Technology, Gulbahcekoyu Urla, Izmir (Turkey); Ila, D.; Chhay, B.; Muntele, C. [Center for Irradiation of Materials, Alabama A and M University, Normal, Huntsville AL 35762 (United States); Budak, S. [Department of Electrical Engineering, Alabama A and M University, Normal, AL 35762 (United States); Oks, E.; Nikolaev, A. [High Current Electrnonics, Institute, Tomsk (Russian Federation)

2009-03-10T23:59:59.000Z

270

Viscoelasticity and primitive path analysis of entangled polymer liquids: From f-actin to polyethylene  

E-Print Network (OSTI)

We combine computer simulations and scaling arguments to develop a unified view of polymer entanglement based on the primitive path analysis (PPA) of the microscopic topological state. Our results agree with experimentally measured plateau moduli for three different polymer classes over a wide rangeof reduced polymer densities: (i) semi-dilute theta solutions of synthetic polymers, (ii) the corresponding dense melts above the glass transition or crystallization temperature, and (iii) solutions of semi-flexible (bio)polymers such as f-actin or suspensions of rodlike viruses. Together these systems cover the entire range from loosely to tightly entangled polymers. In particular, we argue that the primitive path analysis renormalizes a loosely to a tightly entangled system and provide a new explanation of the successful Lin-Noolandi packing conjecture for polymer melts.

Nariya Uchida; Gary S. Grest; Ralf Everaers

2007-11-28T23:59:59.000Z

271

The Conformation of the Poly(ethylene glycol) Chain in Mono ...  

Science Conference Proceedings (OSTI)

... of the lysozyme conjugates, as determined by CD (data not ... instrument NG327 and at Oak Ridge National Laboratory (ORNL) using the 30 ...

2012-02-03T23:59:59.000Z

272

Interaction of Polyethylene and Tritium Gas as Monitored by Raman Spectroscopy  

Science Conference Proceedings (OSTI)

Material Interaction / Proceedings of the Second National Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Dayton, Ohio, April 30 to May 2, 1985)

J. T. Gill

273

TiO2 Photocatalyst Thin-Film Coatings on Polyethylene Terephthalate  

Science Conference Proceedings (OSTI)

Approaching Multimaterial 3D Nanostructured Gas Phase Nanoxerographic Printers · Carbon Nanotube Coatings Laser Power and Energy Measurements.

274

Factors affecting degradation of polyethylene terephthalate (PET) during pre-flotation conditioning  

Science Conference Proceedings (OSTI)

In general, plastics are exposed to different degrading agents in every procedure involved in their recovery from waste mixture and from subsequent recycling. In this study, two methods of pre-flotation conditioning were used to determine how these methods affect the general properties of the pre-conditioned PET particles to be recovered from the PET-PVC mixture. The first method comprised the conditioning of PET samples using an alkaline solution of nonionic surfactant (Triton X-100) based on the patent by the Goodyear Tire and Rubber Company. The second method, developed in this study, was a conditioning process which used an alkali-less solution of the same nonionic surfactant (Triton X-100) used in the first method. The following analytical methods were used to characterize properties of the pre-conditioned PET samples that were correlated to relative degradation of the samples: differential scanning calorimetry (DSC), for thermal behavior of the samples; FT-IR spectroscopy, for functional groups present in the samples; and, Pohl's method, for carboxyl end-group concentration count. Results show that in addition to water the presence of NaOH in the conditioning solution contributes to the further degradation of the polymer.

Caparanga, Alvin R. [School of Chemical Engineering and Chemistry, Mapua Institute of Technology, Intramuros, Manila 1002 (Philippines); School of Graduate Studies, Mapua Institute of Technology, Intramuros, Manila 1002 (Philippines)], E-mail: arcaparanga@mapua.edu.ph; Basilia, Blessie A. [School of Chemical Engineering and Chemistry, Mapua Institute of Technology, Intramuros, Manila 1002 (Philippines); School of Graduate Studies, Mapua Institute of Technology, Intramuros, Manila 1002 (Philippines); Dagbay, Kevin B. [School of Chemical Engineering and Chemistry, Mapua Institute of Technology, Intramuros, Manila 1002 (Philippines); Salvacion, Jonathan W.L. [School of Graduate Studies, Mapua Institute of Technology, Intramuros, Manila 1002 (Philippines)

2009-09-15T23:59:59.000Z

275

Measurements of ultracold neutron upscattering and absorption in polyethylene and vanadium  

E-Print Network (OSTI)

The study of neutron cross sections for elements used as efficient ``absorbers'' of ultracold neutrons (UCN) is crucial for many precision experiments in nuclear and particle physics, cosmology and gravity. In this context, ``absorption'' includes both the capture and upscattering of neutrons to the energies above the UCN energy region. The available data, especially for hydrogen, do not agree between themselves or with the theory. In this report we describe measurements performed at the Los Alamos National Laboratory UCN facility of the UCN upscattering cross sections for vanadium and for hydrogen in CH$_2$ using simultaneous measurements of the radiative capture cross sections for these elements. We measured $\\sigma_{up}=1972\\pm130$ b for hydrogen in CH$_2$, which is below theoretical expectations, and $\\sigma_{up} heating by thermal excitations in solids.

Sharapov, E I; Makela, M; Saunders, A; Adamek, Evan R; Bagdasarova, Yelena; Broussard, L J; Cude-Woods, C B; Fellers, Deon E; Geltenbort, Peter; Hasan, S I; Hickerson, K P; Hogan, G; Holley, A T; Liu, Chen-Yu; Mendenhall, M P; Ortiz, J; Pattie, R W; Phillips, D G; Ramsey, J; Salvat, D J; Seestrom, S J; Shaw, E; Sjue, Sky; Sondheim, W E; VornDick, B; Wang, Z; Womack, T L; Young, A R; Zeck, B A

2013-01-01T23:59:59.000Z

276

Anomalous heat conduction in polyethylene chains: Theory and molecular dynamics simulations  

E-Print Network (OSTI)

In 1955 Fermi, Pasta, and Ulam showed that a simple model for a nonlinear one-dimensional chain of particles can be nonergodic, which implied infinite thermal conductivity. A more recent investigation of a realistic model ...

Henry, Asegun

277

Effects of select fluids on the friction of metal-on-polyethylene joint replacement surfaces  

E-Print Network (OSTI)

Lubricants are important factors in the tribology of total joint arthroplasty (TJA) surfaces, which are primarily comprised of a polished metallic or ceramic component articulating on an Ultra-High Molecular Weight ...

Chang, Timothy C. (Timothy Chan), 1979-

2005-01-01T23:59:59.000Z

278

Municipal Incineration of Refuse with 2 Percent and 4 Percent Additions of Four Plastics: Polyethylene, Polyurethane,  

E-Print Network (OSTI)

was mercury adsorption onto calcium sulfate (CaSO4), a byproduct of the flue gas desulfurization (FGD) wet., Powers K.W., and Pitoniak E.R. (2004) Method for Purifying Flue Gases from Combustion Sources. PatentCoupling of Advanced Oxidation and Adsorption Processes onto Silica-Titania Composites for Low

Columbia University

279

Characterization of Minerals, Metals and Materials 2014  

Science Conference Proceedings (OSTI)

Jul 15, 2013... carbon, electronic, magnetic and optical materials, energy materials, ... Comparison between Bio-composite Based on Green HDPE/ Brazil ...

280

Characterization of Soft Materials - Programmaster.org  

Science Conference Proceedings (OSTI)

Mar 7, 2013 ... This work evaluates changes in morphological, mechanical and thermo- mechanical properties of electron-beam irradiated HDPE/nanoclay and ...

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Characterization of Carbon and Soft Materials  

Science Conference Proceedings (OSTI)

Mar 15, 2012... (HRTEM), X-ray powder diffraction (XRD), and Raman spectroscopy studies. .... Comparative Study of the Sugarcane Bagasse Fiber/HDPE ...

282

Development and Characterization of Milled Silver Powder Addition ...  

Science Conference Proceedings (OSTI)

In order to add the milled Ag powders to granular PP feedstock two different .... Membranes Obtained from PA6/HDPE Blends Via Precipitation by Immersion.

283

Recovery of Precious Metals by Means of Adsorption Using ...  

Science Conference Proceedings (OSTI)

... CPT and QAPT, respectively, while the original persimmon tannin extract as PT powder. ... Effect of Blending HDPE with Coke on the Reduction Behavior of a ...

284

Characterization of Soft Materials II  

Science Conference Proceedings (OSTI)

Comparison between Bio-composite Based on Green HDPE/ Brazil Nut Shell Fiber (BNSF) Treated and Non Treated by Electron-beam Radiation: Rejane de ...

285

1D-to-3D transition of phonon heat conduction in polyethylene using molecular dynamics simulations  

E-Print Network (OSTI)

The thermal conductivity of nanostructures generally decreases with decreasing size because of classical size effects. The axial thermal conductivity of polymer chain lattices, however, can exhibit the opposite trend, ...

Henry, Asegun

286

EM News Flashes | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

May 15, 2013 May 15, 2013 A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. Innovative Technique Accelerates Waste Disposal at Idaho Site IDAHO FALLS, Idaho - An innovative treatment and disposal technique is enabling the Idaho site to accelerate shipments of legacy nuclear waste for permanent disposal. May 13, 2013 Front row, left to right, NuVision Engineering Vice President Laurie Judd, EM Lead International Affairs Specialist Ana Han, EM Associate Principal Deputy Assistant Secretary Alice Williams and United Kingdom Nuclear Decommissioning Authority (NDA) Head of International Relations John Mathieson; back row, left to right, NDA Sellafield Site Deputy Head Graham Jonsson and EM Deputy Assistant Secretary for Tank Waste and Nuclear Material Management Ken Picha.

287

CX-003887: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3887: Categorical Exclusion Determination 3887: Categorical Exclusion Determination CX-003887: Categorical Exclusion Determination Design and Implementation of Geothermal Energy Systems at West Chester University CX(s) Applied: A9, B5.1 Date: 09/01/2010 Location(s): Pennsylvania Office(s): Energy Efficiency and Renewable Energy, Golden Field Office West Chester University of Pennsylvania proposes to use federal funds to design and install an extension to the West Rosedale Avenue geothermal system. They plan to use 1,300 feet of twin high density polyethylene supply/return piping along the road to connect into the central well field and to the main academic quad. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-003887.pdf More Documents & Publications CX-005376: Categorical Exclusion Determination CX-005375: Categorical Exclusion Determination

288

CX-002335: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

35: Categorical Exclusion Determination 35: Categorical Exclusion Determination CX-002335: Categorical Exclusion Determination Energy Efficiency and Conservation Block Grant (EECBG) Project DE-EE0000727 Dodge City Unified School District Heating, Ventilation, and Air Conditioning (HVAC) Retrofit with Ground Source Heat (GSH) Upgrade CX(s) Applied: A9, B5.1 Date: 05/13/2010 Location(s): Dodge City, Kansas Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Dodge City, Kansas is proposing to install a 100 ton Ground Source Heat Pump to service the local Northwest Elementary school. The system will be installed on the school's old playground. The system will be closed loop and will circulate propylene glycol as a heat transfer medium. High-density polyethylene piping will be used and all piping will be fusion welded and

289

CX-005375: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5: Categorical Exclusion Determination 5: Categorical Exclusion Determination CX-005375: Categorical Exclusion Determination Design and Implementation of Geothermal Energy Systems at West Chester University - 1 CX(s) Applied: A9, B5.1, B5.2 Date: 02/28/2011 Location(s): Pennsylvania Office(s): Energy Efficiency and Renewable Energy, Golden Field Office West Chester University (WCU) would install twin high density polyethylene geo-exchange distribution supply/return piping that would extend existing mains and connect to several campus buildings. In addition, a pump house would be built to move geo-exchange water through the well field and to the buildings capable of using it. Some of these buildings would be converted to geo-exchange heating and cooling as well. New wells would be drilled to support the extra building loads.

290

Microwavable thermal energy storage material  

DOE Patents (OSTI)

A microwavable thermal energy storage material is provided which includes a mixture of a phase change material and silica, and a carbon black additive in the form of a conformable dry powder of phase change material/silica/carbon black, or solid pellets, films, fibers, moldings or strands of phase change material/high density polyethylene/ethylene-vinyl acetate/silica/carbon black which allows the phase change material to be rapidly heated in a microwave oven. The carbon black additive, which is preferably an electrically conductive carbon black, may be added in low concentrations of from 0.5 to 15% by weight, and may be used to tailor the heating times of the phase change material as desired. The microwavable thermal energy storage material can be used in food serving applications such as tableware items or pizza warmers, and in medical wraps and garments.

Salyer, Ival O. (Dayton, OH)

1998-09-08T23:59:59.000Z

291

Microwavable thermal energy storage material  

DOE Patents (OSTI)

A microwavable thermal energy storage material is provided which includes a mixture of a phase change material and silica, and a carbon black additive in the form of a conformable dry powder of phase change material/silica/carbon black, or solid pellets, films, fibers, moldings or strands of phase change material/high density polyethylene/ethylene vinyl acetate/silica/carbon black which allows the phase change material to be rapidly heated in a microwave oven. The carbon black additive, which is preferably an electrically conductive carbon black, may be added in low concentrations of from 0.5 to 15% by weight, and may be used to tailor the heating times of the phase change material as desired. The microwavable thermal energy storage material can be used in food serving applications such as tableware items or pizza warmers, and in medical wraps and garments. 3 figs.

Salyer, I.O.

1998-09-08T23:59:59.000Z

292

CX-005376: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6: Categorical Exclusion Determination 6: Categorical Exclusion Determination CX-005376: Categorical Exclusion Determination Design and Implementation of Geothermal Energy Systems at West Chester University - 2 CX(s) Applied: A9, B5.1, B5.2 Date: 02/28/2011 Location(s): Pennsylvania Office(s): Energy Efficiency and Renewable Energy, Golden Field Office West Chester University (WCU) would install twin high density polyethylene geo-exchange distribution supply/return piping that would extend existing mains and connect to several campus buildings. In addition, a pump house would be built to move geo-exchange water through the well field and to the buildings capable of using it. Some of these buildings would be converted to geo-exchange heating and cooling as well. New wells would be drilled to support the extra building loads.

293

CX-003990: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0: Categorical Exclusion Determination 0: Categorical Exclusion Determination CX-003990: Categorical Exclusion Determination Greenhouse Gas to Energy Projects CX(s) Applied: B5.1 Date: 09/22/2010 Location(s): Robeson County, North Carolina Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Robeson County is proposing to use Energy Efficiency and Conservation Block Grant funding to expand the existing landfill gas collection system and construct an electricity-generating facility onsite. The gas collection system construction will consist primarily of installing 24 new extraction wells, approximately 9,000 linear feet of high-density polyethylene piping, a condensate removal vessel and 4 isolation valves. Funding will also be used for the electricity generating facility which will have an estimated

294

CX-001512: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2: Categorical Exclusion Determination 2: Categorical Exclusion Determination CX-001512: Categorical Exclusion Determination Birmingham Recreation Center Ground Source Heat Pump Installation CX(s) Applied: A9, B5.1 Date: 04/01/2010 Location(s): Birmingham, Alabama Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Energy Efficiency and Conservation Block Grant funds. The City of Birmingham is proposing to install 12 sets of 25 ton Ground Source Heat Pumps at 8 locations at local recreation centers across Birmingham. Each system will consist of 16 boreholes at a depth of 500 feet with a spacing of each borehole at 25x25 feet. The systems will circulate potable water as a heat transfer median and the boreholes will be comprised of High Density Polyethylene and completely encased in a thermally enhanced grout top to

295

Ph.D Viva 20072008 Name Deptt/Center Date/TimeVenue Title  

E-Print Network (OSTI)

& Engineering August 1, 2008, 11:30 AM Committee Room, CPSE Studies on PSU/HDPE Blends and Mica Reinforced, Dept.of Civil Engg. Liquefaction resistance and dynamic properties of coal ash. Ms Rekha Centre

Kumar, M. Jagadesh

296

Environmental Management Waste Management Facility (EMWMF) at...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

covered with a 305-mm-thick soil protective layer. Leachate drains from the cells by gravity through double-wall HDPE pipes that penetrate the liner system. These pipes are...

297

Cement Composites Reinforced by Short Curaua Fibers  

Science Conference Proceedings (OSTI)

Consolidation of Nanostructured Al-Powder Alloys by Hot Extrusion: Grain Size ... Shell Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... with Malealated Polypropylene (MAPP) Produced by Reactive Extrusion

298

Nanostructured Magnesium Hydride Prepared by Cold Rolling and ...  

Science Conference Proceedings (OSTI)

Carbothermal Production of Zrb2-Zro2 Composite Powder from Zro2-B2O3/B System ... Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... with Malealated Polypropylene (MAPP) Produced by Reactive Extrusion.

299

The Effects of Cooling Rate on the Microstructure and Hardness of ...  

Science Conference Proceedings (OSTI)

Electron Backscatter Diffraction of Ni and Cu Powder Particles Impacted at High Velocity ... Membranes Obtained from PA6/HDPE Blends Via Precipitation by Immersion ... Preparation and Current Distribution Performance of Pb-Al Layered

300

PROCESSING AND MICROSTRUCTURAL CHARACTERISATION ...  

Science Conference Proceedings (OSTI)

Powder was obtained by water atomization and characterized by apparent density, ... Silver Powder Addition to Polypropylene Feedstock for Injection Molding ... Membranes Obtained from PA6/HDPE Blends Via Precipitation by Immersion.

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Zro 2 Composite Powder from Zro 2 - Programmaster.org  

Science Conference Proceedings (OSTI)

Presentation Title, Carbothermal Production of Zrb2-Zro2 Composite Powder from ... Nut Shell Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with ...

302

Thermal Decomposition Reaction Mechanisms and Kinetics of ...  

Science Conference Proceedings (OSTI)

Comparison between Bio-composite Based on Green HDPE/ Brazil Nut ... In Situ X-ray Diffraction Study of Recovery and Recrystallisation in ODS Ferritic Steel Powder ... Polypropylene Nanocomposites Reinforced with Organophilic Clay and ...

303

Study on the Microstructure Evolution of Fe-6.5wt.%Si Powders ...  

Science Conference Proceedings (OSTI)

Si Powders Fabricated by High Pressure Gas Atomization ... Characterization of Milled Silver Powder Addition to Polypropylene Feedstock for Injection Molding ... Membranes Obtained from PA6/HDPE Blends Via Precipitation by Immersion.

304

U.S. DOE Webinar Series - 2011-2012 Hydrogen Student Design Contest  

NLE Websites -- All DOE Office Websites (Extended Search)

HDPE Other 7% 14% 28% 8% 12% 14% 17% Wood Yard Waste Paper Rubber Plastic Food Compost Metal, Glass, Other 34 University of Maryland Energy Research Center Pipeline NG as...

305

Fundamental investigation of slag/carbon interactions in electric arc furnace steelmaking process.  

E-Print Network (OSTI)

??This work investigates the interactions of carbonaceous materials (metallurgical coke, natural graphite and HDPE/coke blends) with three EAF slags [FeO: 24% to 32%]. Experiments were… (more)

Rahman, Muhammad Mahfuzur

2010-01-01T23:59:59.000Z

306

Poly(ethylene glycol)-based open-channel blockers for the acetylcholine receptor : mechanistic and structure-function studies at the single-channel level  

E-Print Network (OSTI)

Ion channels are essential mediators in nervous signaling pathways. Because hyperactivation of ion channels can lead to pathological disorders such as congenital myasthenic syndromes and neurodegeneration, channel inhibitors ...

Lin, Wan-Chen, Ph. D. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

307

Quantitative Study of Stoichiometric Proton Imbalance in Phototrophic Algal Growth.  

E-Print Network (OSTI)

??The high production of algae based biofuel requires high density of algae culture. One of the important issues associated with high density algae cultivation is… (more)

Wang, Jun

2013-01-01T23:59:59.000Z

308

Effects of simulant mixed waste on EPDM and butyl rubber  

Science Conference Proceedings (OSTI)

The authors have developed a Chemical Compatibility Testing Program for the evaluation of plastic packaging components which may be used in transporting mixed waste forms. In this program, they have screened 10 plastic materials in four liquid mixed waste simulants. These plastics were butadiene-acrylonitrile copolymer (Nitrile) rubber, cross-linked polyethylene, epichlorohydrin rubber, ethylene-propylene (EPDM) rubber, fluorocarbons (Viton and Kel-F{trademark}), polytetrafluoro-ethylene (Teflon), high-density polyethylene, isobutylene-isoprene copolymer (Butyl) rubber, polypropylene, and styrene-butadiene (SBR) rubber. The selected simulant mixed wastes were (1) an aqueous alkaline mixture of sodium nitrate and sodium nitrite; (2) a chlorinated hydrocarbon mixture; (3) a simulant liquid scintillation fluid; and (4) a mixture of ketones. The screening testing protocol involved exposing the respective materials to approximately 3 kGy of gamma radiation followed by 14-day exposures to the waste simulants at 60 C. The rubber materials or elastomers were tested using Vapor Transport Rate measurements while the liner materials were tested using specific gravity as a metric. The authors have developed a chemical compatibility program for the evaluation of plastic packaging components which may be incorporated in packaging for transporting mixed waste forms. From the data analyses performed to date, they have identified the thermoplastic, polychlorotrifluoroethylene, as having the greatest chemical compatibility after having been exposed to gamma radiation followed by exposure to the Hanford Tank simulant mixed waste. The most striking observation from this study was the poor performance of polytetrafluoroethylene under these conditions. In the evaluation of the two elastomeric materials they have concluded that while both materials exhibit remarkable resistance to these environmental conditions, EPDM has a greater resistance to this corrosive simulant mixed waste.

Nigrey, P.J.; Dickens, T.G.

1997-11-01T23:59:59.000Z

309

Block copolymer electrolytes for lithium batteries  

E-Print Network (OSTI)

of poly(ethylene oxide) molten-salt rubbery electrolytes.of poly(ethylene oxide) molten-salt rubbery electrolytes.

Hudson, William Rodgers

2011-01-01T23:59:59.000Z

310

Microsoft Word - WH-MM-767B NEPA.docx  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

67B 67B Title: Replace WH Brine Disposal System Header from MOV-51's to WHT-14/15 Brine Tanks with HDPE Pipe Description: Subcontractor shall provide all labor, tools, materials, equipment and supervision required to replace the WH brine disposal system header from MOV-51's to WHT-14/15 brine tanks with HDPE pipe. Tasks include demolishing existing piping, installing two new pipe support foundations, pipe support steel, pipe shoes and pipe supports, and HDPE piping. Subcontractor shall reuse existing pipe support foundations, pipe support steel and pipe shoes, and existing tank pipe supports. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has

311

MHK Technologies/Microturbine River In Stream | Open Energy Information  

Open Energy Info (EERE)

Microturbine River In Stream Microturbine River In Stream < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Microturbine River In Stream.png Technology Profile Primary Organization Whitestone Power Communications Project(s) where this technology is utilized *MHK Projects/Microturbine River In Stream Technology Resource Click here Current/Tidal Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 5/6: System Integration and Technology Laboratory Demonstration Technology Description HDPE blades are the only moving parts in the water.This gives the turbine high resistance to silty or salty water. Blades designed to survive impact of 1500 lb object. HDPE provides flexibility and strength. Blades penetrate water 24 inches allowing for deep and shallow operation. Mounting design allows for variable depth operation for varying river conditions.All submerged prime-mover parts constructed from HDPE. No underwater gearboxes, generators or electrical cables. Velocity of blades 50% of velocity of river current.

312

Nuclear heat-load limits for above-grade storage of solid transuranium wastes  

SciTech Connect

Nuclear safety and heat load limits were established for above-grade storage of transuranium (TRU) wastes. Nuclear safety limits were obtained from a study by J.L. Forstner and are summarized. Heat load limits are based on temperature calculations for TRU waste drums stored in concrete containers (hats), and results are summarized. Waste already in storage is within these limits. The limiting factors for individual drum heat load limits were (1) avoidance of temperatures in excess of 190/sup 0/F (decomposition temperature of anion resin) when anion resin is present in a concrete hat, and (2) avoidance of temperatures in excess of 450/sup 0/F (ignition temperature of paper) at any point inside a waste drum. The limiting factor for concrete had heat load limits was avoidance of temperatures in excess of 265/sup 0/F (melt point of high density polyethylene) at the drum liners. A temperature profile for drums and hats filled to recommended limits is shown. Equations and assumptions used were conservative.

Clontz, B.G.

1978-06-01T23:59:59.000Z

313

Portable Gamma and Thermal Neutron Detector Using LiI(Eu) Crystals  

Science Conference Proceedings (OSTI)

Simultaneous detection of gamma rays and neutrons emanating from an unknown source has been of special significance and importance to consequence management and first responders since the earliest days of the program. Bechtel Nevada scientists have worked with 6LiI(Eu) crystals and 6Li glass to develop field-operable dual sensors that detect gamma rays and neutrons simultaneously. The prototype 6LiI(Eu) counter, which has been built and tested, is designed to collect data for periods of one second to more than eight hours. The collection time is controlled by thumbwheel switches. A fourpole, high pass filter at 90 KHz reduces microphonic noise from shock or vibration. 6LiI(Eu) crystals generate completely separable gamma-ray and thermal neutron responses. The 6LiI(Eu) rate meter consists of a single crystal 3.8 x 3.8 cm (1.5 x 1.5 in) with a 2.54-cm-(1-in-) thick, annular, high-density, polyethylene ring around the cylinder. Special features are (1) thermal and epithermal neutron detection (0.025eV to 250keV) and (2) typical gamma resolution of 8% at 661.6 keV. Monte Carlo N-Particle calculations for characteristics of gamma spectral behavior, neutron attenuation length, relative neutron and gamma detection efficiency are reported.

S. Mukhopadhyay

2003-06-01T23:59:59.000Z

314

Design and optimization of 6li neutron-capture pulse mode ion chamber  

E-Print Network (OSTI)

The purpose of this research is to design and optimize the performance of a unique, inexpensive 6Li neutron-capture pulse-mode ion chamber (LiPMIC) for neutron detection that overcomes the fill-gas contamination stemming from outgas of detector components. This research also provides a demonstration of performance of LiPMICs. Simulations performed with GARFIELD, a drift-chamber simulation package for ion transport in an electrostatic field, have shown that argon-methane mixtures of fill-gas allow maintenance of electron drift velocity through a surprisingly wide range of fill-gas content. During the design stage of LiPMIC development, the thicknesses of lithium metallization layer, the neutron energy conversion site of the detector, and the thickness of neutron moderator, the high-density polyethylene body, are optimized through analytical and MCNPX calculations. Also, a methodology of obtaining the suitable combination of electric field strength, electron drift velocity, and fill-gas mixtures has been tested and simulated using argon-methane gas mixtures. The LiPMIC is shown to have comparable efficiency to 3He proportional counters at a fraction of cost. Six-month long baseline measurements of overall detector performance shows there is a 3% reduction in total counts for 252Cf sources, which provides a good indicator for the longevity of the detector.

Chung, Kiwhan

2008-08-01T23:59:59.000Z

315

Flexible ocean upwelling pipe  

DOE Patents (OSTI)

In an ocean thermal energy conversion facility, a cold water riser pipe is releasably supported at its upper end by the hull of the floating facility. The pipe is substantially vertical and has its lower end far below the hull above the ocean floor. The pipe is defined essentially entirely of a material which has a modulus of elasticity substantially less than that of steel, e.g., high density polyethylene, so that the pipe is flexible and compliant to rather than resistant to applied bending moments. The position of the lower end of the pipe relative to the hull is stabilized by a weight suspended below the lower end of the pipe on a flexible line. The pipe, apart from the weight, is positively buoyant. If support of the upper end of the pipe is released, the pipe sinks to the ocean floor, but is not damaged as the length of the line between the pipe and the weight is sufficient to allow the buoyant pipe to come to a stop within the line length after the weight contacts the ocean floor, and thereafter to float submerged above the ocean floor while moored to the ocean floor by the weight. The upper end of the pipe, while supported by the hull, communicates to a sump in the hull in which the water level is maintained below the ambient water level. The sump volume is sufficient to keep the pipe full during heaving of the hull, thereby preventing collapse of the pipe.

Person, Abraham (Los Alamitos, CA)

1980-01-01T23:59:59.000Z

316

Design and cost of near-term OTEC (Ocean Thermal Energy Conversion) plants for the production of desalinated water and electric power. [Ocean Thermal Energy Conversion (OTEC)  

DOE Green Energy (OSTI)

There currently is an increasing need for both potable water and power for many islands in the Pacific and Caribbean. The Ocean Thermal Energy Conversion (OTEC) technology fills these needs and is a viable option because of the unlimited supply of ocean thermal energy for the production of both desalinated water and electricity. The OTEC plant design must be flexible to meet the product-mix demands that can be very different from site to site. This paper describes different OTEC plants that can supply various mixes of desalinated water and vapor -- the extremes being either all water and no power or no water and all power. The economics for these plants are also presented. The same flow rates and pipe sizes for both the warm and cold seawater streams are used for different plant designs. The OTEC plant designs are characterized as near-term because no major technical issues need to be resolved or demonstrated. The plant concepts are based on DOE-sponsored experiments dealing with power systems, advanced heat exchanger designs, corrosion and fouling of heat exchange surfaces, and flash evaporation and moisture removal from the vapor using multiple spouts. In addition, the mature multistage flash evaporator technology is incorporated into the plant designs were appropriate. For the supply and discharge warm and cold uncertainties do exist because the required pipe sizes are larger than the maximum currently deployed -- 40-inch high-density polyethylene pipe at Keahole Point in Hawaii. 30 refs., 6 figs., 8 tabs.

Rabas, T.; Panchal, C.; Genens, L.

1990-01-01T23:59:59.000Z

317

Hanford Permanent Isolation Barrier Program: Asphalt technology development  

SciTech Connect

An important component of the Hanford Permanent Isolation Barrier is the use of a two-layer composite asphalt system, which provides backup water diversion capabilities if the primary capillary barrier fails to meet infiltration goals. Because of asphalt`s potential to perform to specification over the 1000-year design life criterion, a composite asphalt barrier (HMAC/fluid-applied polymer-modified asphalt) is being considered as an alternative to the bentonite clay/high density poly(ethylene) barriers for the low-permeability component of the Hanford Permanent Isolation Barrier. The feasibility of using asphalt as a long-term barrier is currently being studied. Information that must be known is the ability of asphalt to retain desirable physical properties over a period of 1000 years. This paper presents the approach for performing accelerated aging tests and evaluating the performance of samples under accelerated conditions. The results of these tests will be compared with asphalt artifact analogs and the results of modeling the degradation of the selected asphalt composite to make life-cycle predictions.

Freeman, H.D.; Romine, R.A.

1994-11-01T23:59:59.000Z

318

Finite element analyses of continuous filament ties for masonry applications:final report for the Arquin Corporation.  

Science Conference Proceedings (OSTI)

Finite-element analyses were performed to simulate the response of a hypothetical masonry shear wall with and without continuous filament ties to various lateral loads. The loads represented three different scenarios: (1) 100 mph wind, (2) explosive attack, and (3) an earthquake. In addition, a static loading analysis and cost comparison were performed to evaluate optimal materials and designs for the spacers affixed to the filaments. Results showed that polypropylene, ABS, and polyethylene (high density) were suitable materials for the spacers based on performance and cost, and the short T-spacer design was optimal based on its performance and functionality. Results of the shear-wall loading simulations revealed that simulated walls with the continuous filament ties yielded factors of safety that were at least ten times greater than those without the ties. In the explosive attack simulation (100 psi), the simulated wall without the ties failed (minimum factor of safety was less than one), but the simulated wall with the ties yielded a minimum factor of safety greater than one. Simulations of the walls subject to lateral loads caused by 100 mph winds (0.2 psi) and seismic events with a peak ground acceleration of 1 ''g'' (0.66 psi) yielded no failures with or without the ties. Simulations of wall displacement during the seismic scenarios showed that the wall with the ties resulted in a maximum displacement that was 20% less than the wall without the ties.

Quinones, Armando (Arquin Corporation, La Luz, NM); Bibeau, Tiffany A.; Ho, Clifford Kuofei

2006-06-01T23:59:59.000Z

319

Finite element analyses of continuous filament ties for masonry applications : final report for the Arquin Corporation.  

Science Conference Proceedings (OSTI)

Finite-element analyses were performed to simulate the response of a hypothetical vertical masonry wall subject to different lateral loads with and without continuous horizontal filament ties laid between rows of concrete blocks. A static loading analysis and cost comparison were also performed to evaluate optimal materials and designs for the spacers affixed to the filaments. Results showed that polypropylene, ABS, and polyethylene (high density) were suitable materials for the spacers based on performance and cost, and the short T-spacer design was optimal based on its performance and functionality. Simulations of vertical walls subject to static loads representing 100 mph winds (0.2 psi) and a seismic event (0.66 psi) showed that the simulated walls performed similarly and adequately when subject to these loads with and without the ties. Additional simulations and tests are required to assess the performance of actual walls with and without the ties under greater loads and more realistic conditions (e.g., cracks, non-linear response).

Quinones, Armando, Sr. (Arquin Corporation, La Luz, NM); Bibeau, Tiffany A.; Ho, Clifford Kuofei

2008-08-01T23:59:59.000Z

320

Mix Masters: NIST Scientists Image the Molecular Structure of ...  

Science Conference Proceedings (OSTI)

... Imaging the molecular structure of polyethylene blends with broadband coherent Raman microscopy. ACS Macro Lett. ...

2012-11-29T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Encapsulant Material For Solar Cell Module And Laminated Glass Applications  

SciTech Connect

An encapsulant material includes a layer of metallocene polyethylene disposed between two layers of an acid copolymer of polyethylene. More specifically, the layer of metallocene polyethylene is disposed adjacent a rear surface of the first layer of the acid copolymer of polyethylene, and a second layer of the acid copolymer of polyethlene is disposed adjacent a rear surface of the layer of metallocene polyethylene. The encapsulant material can be used in solar cell module and laminated glass applications.

Hanoka, Jack I. (Brookline, MA); Klemchuk, Peter P. (Watertown, CT)

2001-02-13T23:59:59.000Z

322

The First Pan American Geosynthetics Conference & Exhibition 2-5 March 2008, Cancun, Mexico  

E-Print Network (OSTI)

and mechanical tests of PVC and HDPE geomembranes that were exposed to weathering (solar radiation, humidity of puncture and tear tests showed some increases with aging. Some decreases were verified in the deformation, they can degrade when in contact with sunlight. Sharma & Lewis (1994) report that geomembranes exposed

Zornberg, Jorge G.

323

James F. Ely -Curriculum Vitae Page 1 of 12  

E-Print Network (OSTI)

(material, diameter, spacing, and burial depth), (4) system flow rates, (5) heat transfer fluid properties2 · heat transfer fluid = 42% propylene glycol @ a flow rate of 22 l/s · heat pump model = Water was specified as the heat transfer fluid with a total flow rate of 57 l/s. A borehole diameter of 125 mm, HDPE U

Ely, James F.

324

CX-010712: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

Replace West Hackberry Brine Disposal System Header from MOV-51’s to WHT-14/15 Brine Tanks with HDPE Pipe CX(s) Applied: B5.2 Date: 07/03/2013 Location(s): Louisiana Offices(s): Strategic Petroleum Reserve Field Office

325

Effects of Microstructure on the Fatigue Crack Growth Behavior of ...  

Science Conference Proceedings (OSTI)

Carbothermal Production of Zrb2-Zro2 Composite Powder from Zro2-B2O3/B System by ... Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with ...

326

Ultrafine Grained Structure Development in Steels with Different ...  

Science Conference Proceedings (OSTI)

Carbothermal Production of Zrb2-Zro2 Composite Powder from Zro2-B2O3/B System by ... Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with ...

327

Dynamic Punch Test in the SHPB apparatus for Calibration of A ...  

Science Conference Proceedings (OSTI)

Carbothermal Production of Zrb2-Zro2 Composite Powder from Zro2-B2O3/B System by ... Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with ...

328

Coupling Advanced Characterization with First-Principles ...  

Science Conference Proceedings (OSTI)

Carbothermal Production of Zrb2-Zro2 Composite Powder from Zro2-B2O3/B System by ... Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with ...

329

About this Abstract  

Science Conference Proceedings (OSTI)

Carbothermal Production of Zrb2-Zro2 Composite Powder from Zro2-B2O3/B System by ... Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with ...

330

Sustainability, Recycling, and Waste Treatment in the Aluminum ...  

Science Conference Proceedings (OSTI)

Carbothermal Production of Zrb2-Zro2 Composite Powder from Zro2-B2O3/B System by ... Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with ...

331

Process monitoring and cure control applied in RTM production of ...  

Science Conference Proceedings (OSTI)

Carbothermal Production of Zrb2-Zro2 Composite Powder from Zro2-B2O3/B System by ... Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with ...

332

Thermal Stability and Mechanical Properties of Ultrafine-Grained ...  

Science Conference Proceedings (OSTI)

Carbothermal Production of Zrb2-Zro2 Composite Powder from Zro2-B2O3/B System by ... Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with ...

333

In situ Fe K-edge X-ray absorption fine structure of a pyrite electrode in a Li/polyethylene oxide (LiClO{sub 4})/FeS{sub 2} battery environment  

DOE Green Energy (OSTI)

Electronic and structural properties of materials generated by the reduction and subsequent oxidation of pyrite in a lithium-based solid polymer electrolyte have been examined by in situ fluorescence Fe K-edge X-ray absorption fine structure (XAFS) in a FeS{sub 2}/Li battery environment. The XAFS results obtained are consistent with the formation of metallic iron as one of the products of the full (4-electron) discharge, in agreement with information reported in other laboratories. Extended X-ray absorption fine structure (EXAFS) data reveal that a subsequent 2-electron or 4-electron recharge generates a species with a Fe-S bond distance identical to that of pyrite, d(Fe-S) = 2.259 {angstrom}, with no other clearly detectable interactions due to more distant atoms. Based on the similarities between the metrical parameters and other features in the X-ray absorption near edge structure (XANES), the ferrous sites in these species appear to be tetrahedrally coordinated, as in chalcopyrite (CuFeS{sub 2}), for which d(Fe-S) is 2.257 {angstrom}, and, thus, different than in Li{sub 2} FeS{sub 2}, a material that exhibits longer Fe-S distances.

Totir, D.; Bae, I.T.; Hu, Y.; Scherson, D.A. [Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Chemistry; Antonio, M.R. [Argonne National Lab., IL (United States). Chemistry Div.

1996-12-31T23:59:59.000Z

334

TransForum v8n1 - New X-ray Technique May Lead to Better Fuel...  

NLE Websites -- All DOE Office Websites (Extended Search)

The liquid breakup of a high-density stream from a fuel injector as imaged with ultrafast synchrotron x-ray full-field phase contrast imaging The liquid breakup of a high-density...

335

Shocking Results from Diamond Anvil Cell Experiments  

Shocked behavior in microscopic samples can consist of the behavior of shocked explosives before chemistry begins or the high density, ...

336

--No Title--  

NLE Websites -- All DOE Office Websites (Extended Search)

photovoltaics, ultra-high density information storage and high-temperature superconductors. "Such nanocomposite films with different overall composition,...

337

Ferroelectric and Piezoelectric Properties of Sol-Gel-Processed ...  

Science Conference Proceedings (OSTI)

Piezoelectric Films for High Density Switching Arrays for Logic ... Processing and Their Electrochemical Performance for Energy Storage Applications · Synthesis ...

338

Thermodynamics and Ionic Conductivity of Block Copolymer Electrolytes  

E-Print Network (OSTI)

of Poly(Ethylene Oxide) Molten-Salt Rubbery Electrolytes.Imides: A New Family of Molten Salts and Conductive Plasticof Poly(Ethylene Oxide) Molten-Salt Rubbery Electrolytes.

Wanakule, Nisita Sidra

2010-01-01T23:59:59.000Z

339

A characterization and evaluation of coal liquefaction process streams. Quarterly technical progress report, July 1--September 30, 1995  

Science Conference Proceedings (OSTI)

The objectives of this project are to support the DOE direct coal liquefaction process development program and to improve the useful application of analytical chemistry to direct coal liquefaction process development. Independent analyses by well-established methods will be obtained of samples produced in direct coal liquefaction processes under evaluation by DOE. Additionally, analytical instruments and techniques which are currently underutilized for the purpose of examining coal-derived samples will be evaluated. The data obtained from this study will be used to help guide current process development and to develop an improved data base on coal and coal liquids properties. A sample bank will be established and maintained for use in this project and will be available for use by other researchers. The reactivity of the non-distillable resids toward hydrocracking at liquefaction conditions (i.e., resid reactivity) will be examined. From the literature and data experimentally obtained, a mathematical kinetic model of resid conversion will be constructed. It is anticipated that such a model will provide insights useful for improving process performance and thus the economics of direct coal liquefaction. Some of the contract activities for this quarter are: We completed many of the analyses on the 81 samples received from HTI bench-scale run CMSL-9, in which coal, coal/mixed plastics, and coal/high density polyethylene were fed; Liquid chromatographic separations of the 15 samples in the University of Delaware sample set were completed; and WRI completed CP/MAS {sup 13}C-NMR analyses on the Delaware sample set.

Robbins, G.A.; Brandes, S.D.; Winschel, R.A.; Burke, F.P.

1995-12-01T23:59:59.000Z

340

Monte Carlo Simulations Of The Dose Distributions From Carbon Microbeams Used In An Experimental Radiation Therapy Method  

SciTech Connect

Recent upgrades of the MCNPX Monte Carlo code include transport of heavy ions. We employed the new code to simulate the energy and dose distributions produced by carbon beams in rabbit's head in and around a brain tumor. The work was within our experimental technique of interlaced carbon microbeams, which uses two 90 deg. arrays of parallel, thin planes of carbon beams (microbeams) interlacing to produce a solid beam at the target. A similar version of the method was earlier developed with synchrotron-generated x-ray microbeams. We first simulated the Bragg peak in high density polyethylene and other materials, where we could compare the calculated carbon energy deposition to the measured data produced at the NASA Space Radiation Laboratory (NSRL) at Brookhaven National Laboratory (BNL). The results showed that new MCNPX code gives a reasonable account of the carbon beam's dose up to {approx}200 MeV/nucleon beam energy. At higher energies, which were not relevant to our project, the model failed to reproduce the Bragg-peak's extent of increasing nuclear breakup tail. In our model calculations we determined the dose distribution along the beam path, including the angular straggling of the microbeams, and used the data for determining the optimal values of beam spacing in the array for producing adequate beam interlacing at the target. We also determined, for the purpose of Bragg-peak spreading at the target, the relative beam intensities of the consecutive exposures with stepwise lower beam energies, and simulated the resulting dose distribution in the spread out Bragg-peak. The details of the simulation methods used and the results obtained are presented.

Dioszegi, I. [Nonproliferation and National Security Department, Brookhaven National Laboratory, Upton, New York 11973 (United States); Rusek, A.; Chiang, I. H. [NASA Space Radiation Laboratory, Brookhaven National Laboratory, Upton, NY 11973 (United States); Dane, B. R. [Medical School, State University of New York at Stony Brook, Stony Brook, NY 11794 (United States); Meek, A. G. [Department of Radiation Oncology, State University of New York at Stony Brook, Stony Brook, NY 11794 (United States); Dilmanian, F. A. [Department of Radiation Oncology, State University of New York at Stony Brook, Stony Brook, NY 11794 (United States); Medical Department, Brookhaven National Laboratory, Upton, NY 11973 (United States)

2011-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Extended storage of low-level radioactive waste: potential problem areas  

DOE Green Energy (OSTI)

If a state or state compact does not have adequate disposal capacity for low-level radioactive waste (LLRW) by 1986 as required by the Low-Level Waste Policy Act, then extended storage of certain LLRW may be necessary. The issue of extended storage of LLRW is addressed in order to determine for the Nuclear Regulatory Commission the areas of concern and the actions recommended to resolve these concerns. The focus is on the properties and behavior of the waste form and waste container. Storage alternatives are considered in order to characterize the likely storage environments for these wastes. The areas of concern about extended storage of LLRW are grouped into two categories: 1. Behavior of the waste form and/or container during storage, e.g., radiolytic gas generation, radiation-enhanced degradation of polymeric materials, and corrosion. 2. Effects of extended storage on the properties of the waste form and/or container that are important after storage (e.g., radiation-induced oxidative embrittlement of high-density polyethylene and the weakening of steel containers resulting from corrosion by the waste). The additional information and actions required to address these concerns are discussed and, in particular, it is concluded that further information is needed on the rates of corrosion of container material by Class A wastes and on the apparent dose-rate dependence of radiolytic processes in Class B and C waste packages. Modifications to the guidance for solidified wastes and high-integrity containers in NRC's Technical Position on Waste Form are recommended. 27 references.

Siskind, B.; Dougherty, D.R.; MacKenzie, D.R.

1985-01-01T23:59:59.000Z

342

NCWM 2010 Annual Report - SP1115  

Science Conference Proceedings (OSTI)

... DOC|PDF; Appendix H: Agricultural Seed Count Rule DOC|PDF; Appendix I: Polyethylene Sheeting DOC|PDF; Appendix ...

2013-07-09T23:59:59.000Z

343

Aerosol Containers 19  

Science Conference Proceedings (OSTI)

... L. Label 155. Lacquers 43. Linear ... 39. Packages Labeled by Volume 33. Paint, Lacquers, Varnish 44. Polyethylene Sheeting 76. ...

2012-11-14T23:59:59.000Z

344

Massively Parallel Simulations of Materials Response  

Science Conference Proceedings (OSTI)

Atomic Scale Deformation Mechanisms of Amorphous Polyethylene under Tensile Loading · Atomistic Predictions of Age Hardening in Al-Cu Alloys.

345

Atomistic Predictions of Age Hardening in Al-Cu Alloys  

Science Conference Proceedings (OSTI)

Atomic Scale Deformation Mechanisms of Amorphous Polyethylene under Tensile Loading · Atomistic Predictions of Age Hardening in Al-Cu Alloys.

346

Atoms-to-Continuum (AtC): A User Package for LAMMPS  

Science Conference Proceedings (OSTI)

Atomic Scale Deformation Mechanisms of Amorphous Polyethylene under Tensile Loading · Atomistic Predictions of Age Hardening in Al-Cu Alloys.

347

Open Source Discrete Element Simulations of Granular Materials ...  

Science Conference Proceedings (OSTI)

Atomic Scale Deformation Mechanisms of Amorphous Polyethylene under Tensile Loading · Atomistic Predictions of Age Hardening in Al-Cu Alloys.

348

ABSTRACTSOFCURRENTLITERATURE The following Technical Reports cover work done under the DARPA research described on page 136.  

E-Print Network (OSTI)

-413 Bechtold JE, Kubic V, Søballe K (2002). Bone ingrowth in the presence of particulate polyethylene. J Bone

349

Hydrogen Tank Project Q2 Report - FY 11  

DOE Green Energy (OSTI)

Quarterly report that represents PNNL's results of HDPE, LDPE, and industrial polymer materials testing. ASTM D638 type 3 samples were subjected to a high pressure hydrogen environment between 3000 and 4000 PSI. These samples were tested using an instron load frame and were analyzed using a proprietary set of excel macros to determine trends in data. The development of an in-situ high pressure hydrogen tensile testing apparatus is discussed as is the stress modeling of the carbon fiber tank exterior.

Johnson, Kenneth I.; Alvine, Kyle J.; Skorski, Daniel C.; Nguyen, Ba Nghiep; Kafentzis, Tyler A.; Dahl, Michael E.; Pitman, Stan G.

2011-05-15T23:59:59.000Z

350

CX-007700: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Exclusion Determination CX-007700: Categorical Exclusion Determination University of Utah - A New Generation High Density Thermal Battery Based on Advanced Metal Hydrides CX(s)...

351

Abstract for Bao-An Li  

NLE Websites -- All DOE Office Websites (Extended Search)

The emphasis will be on identifying experimental observables that are sensitive to the high density behavior of nuclear symmetry energy. Back to the theory seminar page....

352

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

audit-report-ig-0837 Download CX-004733: Categorical Exclusion Determination High-Density Nanopore Array for Selective Biomolecular Transport Date: 11032010 Location(s):...

353

From: "Shenai, Krishna" To ...  

Science Conference Proceedings (OSTI)

... amplifiers, light-emitting diodes (LEDs), solar cells, lasers ... based material technologies in energy- and communication ... to a very high density of native ...

2012-11-06T23:59:59.000Z

354

Session VII  

Science Conference Proceedings (OSTI)

Sponsored by: TMS: Energy Conversion and Storage Committee .... Also, the TiO2(B) nanorods had high-density pores that were uniformly-distributed on the ...

355

Passively-aligned Optical Transceiver for Light Peak Application.  

E-Print Network (OSTI)

??The aim of this dissertation is to fabricate miniaturized active optical cable (AOCs) based on precision positioning property of MT ferrule High density multimedia interface… (more)

Yang, Dung-Chin

2013-01-01T23:59:59.000Z

356

Human and Natural Causes of Variation of Forage Species on Nearshore Rocky Reefs  

E-Print Network (OSTI)

Interactions between corals and algae on a temperate zonestates with minimal foliose algae and high densities of seaby encrusting coralline algae and have urchin densities as

Levenbach, Stuart

2004-01-01T23:59:59.000Z

357

Premium Power Corporation | Open Energy Information  

Open Energy Info (EERE)

Massachusetts Zip 1845 Product Specialises in the design and manufacture of high-density energy storage, utility service management and power quality systems. References Premium...

358

Business Case Slide 15: High-Volume: Casks - DU/Steel Cermet  

NLE Websites -- All DOE Office Websites (Extended Search)

DUSteel Cermet Previous Slide Next Slide Table of Contents High-Volume: Casks - DUSteel Cermet Functions Radiation Shielding Gamma: High-Density DUO2Other Neutron Moderation...

359

Pulse Thermal Processing of Functional Materials Using a Directed Plasma Arc  

Using pulses of high density infrared light from a directed plasma arc, ORNL researchersinvented a method to thermally process thin films and other ...

360

ATP Project Brief - 90-01-0121  

Science Conference Proceedings (OSTI)

... to benefiting the electronics and semiconductor industries, the technology would have important applications in high-density plasma research, x-ray ...

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Fusion Cladding of Corrosion Resistant Alloys for HTHP Applications  

Science Conference Proceedings (OSTI)

Current methods for producing clad pipe are either very slow, such as weld ... Fusion cladding, a new process utilizing high density infrared heat sources to fuse ...

362

U.S. Department of Energy Categorical Exclusion Determination...  

NLE Websites -- All DOE Office Websites (Extended Search)

work is consistent with the goal of ADEPT: fundamental advances in soft magnetics, high voltage switches, and reliable, high-density charge storage. Proposed work consists...

363

U.S. Department of Energy Categorical Exclusion Determination...  

NLE Websites -- All DOE Office Websites (Extended Search)

The work is consistent with the goal of ADEPT: fundamental advances in soft magnetics, high voltage switches, and reliable, high-density charge storage. Work consists entirely...

364

U.S. Department of Energy Categorical Exclusion Determination...  

NLE Websites -- All DOE Office Websites (Extended Search)

work is consistent with the goals of ADEPT: fundamental advances in soft magnetics, high voltage switches, and reliable, high-density charge storage. Proposed work consists...

365

Thermal hydraulics analysis of the MIT research reactor in support of a low enrichment uranium (LEU) core conversion.  

E-Print Network (OSTI)

??The MIT research reactor (MITR) is converting from the existing high enrichment uranium (HEU) core to a low enrichment uranium (LEU) core using a high-density… (more)

Ko, Yu-Chih, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

366

Cold Welding Discovery at the Nanoscale - Materials Technology ...  

Science Conference Proceedings (OSTI)

Feb 25, 2010 ... The discovery of these phenomena could be useful in development of high- density electronic devices, since heat-induced welds on the ...

367

Method for Making Flat, High Performance Thin Membrane ...  

For Industry; For Researchers; Success Stories; About Us; ... Inexpensive Production of High Density Thin Ceramic Films on Rigid or Porous Substrates, ...

368

Low Cost Fabrication of Thin-Film Ceramic Membranes for ...  

For Industry; For Researchers; Success Stories; About Us; ... Inexpensive Production of High Density Thin Ceramic Films on Rigid or Porous Substrates, ...

369

Fail-Safe, Inexpensive Electrochemical Device Stack Design  

For Industry; For Researchers; Success Stories; About Us; ... Inexpensive Production of High Density Thin Ceramic Films on Rigid or Porous Substrates, ...

370

Solid Oxide Fuel Cell Technologies: Surface Additives for ...  

For Industry; For Researchers; Success Stories; About Us; ... Inexpensive Production of High Density Thin Ceramic Films on Rigid or Porous Substrates, ...

371

arpa-e funding and fellowship  

Science Conference Proceedings (OSTI)

“Batteries for Electrical Energy Storage in Transportation (BEEST),” where the objective is to “develop a new generation of ultra-high density, low-cost battery ...

372

NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Philadelphia,Pennsylvania AIMCO CHP Projects Under PA Green Energy Works Combined Heat and Power - Install eight CHP systems at four high density residential properties. The...

373

BNL Biology Department - Patents Issued  

NLE Websites -- All DOE Office Websites (Extended Search)

Biology Staff For information about patents consult the US Patent Office. For scientific background follow links to investigator's pages. Studier, F. W., Inventor. High Density...

374

Quantum rotation of H2 in SWNT  

Science Conference Proceedings (OSTI)

... interest recently due to reports of high density hydrogen storage at room ... placed under dynamic vacuum for ~12 h with a mechanical pump (~10 -3 ...

375

Unexpectedly Long-Range Effects in Advanced Magnetic ...  

Science Conference Proceedings (OSTI)

... The data read heads on modern high-density disk drives usually exploit a version of the giant magnetoresistance (GMR) effect, which uses such ...

2012-10-18T23:59:59.000Z

376

Benthic Microbial Fuel Cell Persistent power supply for in-water ...  

Benthic Microbial Fuel Cell Persistent power supply for in-water sensors ... and high-density sensor arrays where the cost of battery replacement is high.

377

Researchers use light to create rare uranium molecule  

NLE Websites -- All DOE Office Websites (Extended Search)

to create rare uranium molecule Uranium nitride materials show promise as advanced nuclear fuels due to their high density, high stability, and high thermal conductivity. July...

378

1F - Solaris Kernel Cryptographic Framework Software FIPS ...  

Science Conference Proceedings (OSTI)

... HD High Density HMAC (Keyed-) Hash-based Message Authentication Code KAT Known Answer Test LED Light Emitting Diode MAC Message ...

2013-12-12T23:59:59.000Z

379

Mr. J. C. Delaney  

Office of Legacy Management (LM)

UO2 Dissolution ... 5-a 3: High Density UO2 Dissolution ... 6-a 4. Allowable Interactions With U02 Feed ... 6-a ., Table 1' .:...

380

Success Stories: Berkeley HeartLab  

... he might have eliminated his need for emergency surgery. HDL-S 3 GGE™ separates the high density lipoproteins (HDL), also know n ...

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

TANK 40 FINAL SLUDGE BATCH 8 CHEMICAL CHARACTERIZATION RESULTS  

SciTech Connect

A sample of Sludge Batch 8 (SB8) was pulled from Tank 40 in order to obtain radionuclide inventory analyses necessary for compliance with the Waste Acceptance Product Specifications (WAPS). The SB8 WAPS sample was also analyzed for chemical composition, including noble metals, and fissile constituents, and these results are reported here. These analyses along with the WAPS radionuclide analyses will help define the composition of the sludge in Tank 40 that is currently being fed to the Defense Waste Processing Facility (DWPF) as SB8. At SRNL, the 3-L Tank 40 SB8 sample was transferred from the shipping container into a 4-L high density polyethylene bottle and solids were allowed to settle. Supernate was then siphoned off and circulated through the shipping container to complete the transfer of the sample. Following thorough mixing of the 3-L sample, a 553 g sub-sample was removed. This sub-sample was then utilized for all subsequent slurry sample preparations. Eight separate aliquots of the slurry were digested, four with HNO{sub 3}/HCl (aqua regia) in sealed Teflon? vessels and four with NaOH/Na{sub 2}O{sub 2} (alkali or peroxide fusion) using Zr crucibles. Two Analytical Reference Glass ? 1 (ARG-1) standards were digested along with a blank for each preparation. Each aqua regia digestion and blank was diluted to 1:100 mL with deionized water and submitted to Analytical Development (AD) for inductively coupled plasma ? atomic emission spectroscopy (ICP-AES) analysis, inductively coupled plasma ? mass spectrometry (ICP-MS) analysis, atomic absorption spectroscopy (AA) for As and Se, and cold vapor atomic absorption spectroscopy (CV-AA) for Hg. Equivalent dilutions of the alkali fusion digestions and blank were submitted to AD for ICP-AES analysis. Tank 40 SB8 supernate was collected from a mixed slurry sample in the SRNL Shielded Cells and submitted to AD for ICP-AES, ion chromatography (IC), total base/free OH-/other base, total inorganic carbon/total organic carbon (TIC/TOC) analyses. Weighted dilutions of slurry were submitted for IC, TIC/TOC, and total base/free OH-/other base analyses. Activities for U-233, U-235, and Pu-239 were determined from the ICP-MS data for the aqua regia digestions of the Tank 40 WAPS slurry using the specific activity of each isotope. The Pu-241 value was determined from a Pu-238/-241 method developed by SRNL AD and previously described.

Bannochie, C.

2013-09-19T23:59:59.000Z

382

SILENE Benchmark Critical Experiments for Criticality Accident Alarm Systems  

SciTech Connect

In October 2010 a series of benchmark experiments was conducted at the Commissariat a Energie Atomique et aux Energies Alternatives (CEA) Valduc SILENE [1] facility. These experiments were a joint effort between the US Department of Energy (DOE) and the French CEA. The purpose of these experiments was to create three benchmarks for the verification and validation of radiation transport codes and evaluated nuclear data used in the analysis of criticality accident alarm systems (CAASs). This presentation will discuss the geometric configuration of these experiments and the quantities that were measured and will present some preliminary comparisons between the measured data and calculations. This series consisted of three single-pulsed experiments with the SILENE reactor. During the first experiment the reactor was bare (unshielded), but during the second and third experiments it was shielded by lead and polyethylene, respectively. During each experiment several neutron activation foils and thermoluminescent dosimeters (TLDs) were placed around the reactor, and some of these detectors were themselves shielded from the reactor by high-density magnetite and barite concrete, standard concrete, and/or BoroBond. All the concrete was provided by CEA Saclay, and the BoroBond was provided by Y-12 National Security Complex. Figure 1 is a picture of the SILENE reactor cell configured for pulse 1. Also included in these experiments were measurements of the neutron and photon spectra with two BICRON BC-501A liquid scintillators. These two detectors were provided and operated by CEA Valduc. They were set up just outside the SILENE reactor cell with additional lead shielding to prevent the detectors from being saturated. The final detectors involved in the experiments were two different types of CAAS detectors. The Babcock International Group provided three CIDAS CAAS detectors, which measured photon dose and dose rate with a Geiger-Mueller tube. CIDAS detectors are currently in use at Y-12 in the newly constructed Highly Enriched Uranium Materials Facility. The second CAAS detector used a {sup 6}LiF TLD to absorb neutrons and a silicon detector to count the charge particles released by these absorption events. Lawrence Livermore National Laboratory provided four of these detectors, which had formerly been used at the Rocky Flats facility in the United States.

Miller, Thomas Martin [ORNL; Reynolds, Kevin H. [Y-12 National Security Complex

2011-01-01T23:59:59.000Z

383

Attenuation of dilute aromatic hydrocarbon transport by a block copolymer in a compacted vertisol  

E-Print Network (OSTI)

Municipal solid waste landfills in the United States are built with a composite bottom liner consisting of a flexible membrane liner of high-density polyethylene overlying a compacted soil liner. Hydrocarbons have been shown to pass through the flexible membrane liner by diffusion. Flexible membrane liners often have flaws allowing direct contact between the leachate and the compacted soil liner. The transmission of hydrocarbons to the compacted soil liner presents a threat to groundwater supplies. The study was performed to determine if the modification of a compacted soil liner with a thermoplastic elastomer block copolymer could successfully sequester benzene, toluene, ethylbenzene, and xylenes and meet the United States Environmental Protection Agency's saturated hydraulic conductivity requirement of 1x10?? cm sec?¹. Compacted Ships clay modified with 0, 1, 3, 5, and 10% weight of a thermoplastic elastomer block copolymer was tested for saturated hydraulic conductivity using 10.2 cm fixed wall permeameters. The compacted Ships clay met the United States Environmental Protection Agency's mandated saturated hydraulic conductivity of 10?? cm sec?¹ at polymer contents of 3% (wt) polymer or less. The presence of dissolved aromatic hydrocarbons had no effect on the saturated hydraulic conductivity. The ability of the polymer to attenuate the transport of dilute aromatic hydrocarbons was tested by permeating the compacted soil/polymer treatments with a 0.01N CaSO4 solution contaminated with benzene, toluene, ethylbenzene, and xylenes. Leachate from permeameters packed with soil containing more than 1% (wt) polymer had BTEX concentrations below the drinking water standard for 3 or more pore volumes. The findings of this research were applied to a hypothetical compacted soil liner constructed with Ships clay modified to include 3% (wt) polymer and having a saturated hydraulic conductivity of 4.23 x 10?? cm sec?¹. It was assumed that the soil liner was in direct contact with landfill leachate. The hypothetical liner would protect the groundwater from contamination above the maximum contamination limit for drinking water by benzene for 350 years, toluene for 140 years, and ethylbenzene for 260 years.

Akin, James Browning

2001-01-01T23:59:59.000Z

384

Tank 40 Final SB7b Chemical Characterization Results  

SciTech Connect

A sample of Sludge Batch 7b (SB7b) was taken from Tank 40 in order to obtain radionuclide inventory analyses necessary for compliance with the Waste Acceptance Product Specifications (WAPS). The SB7b WAPS sample was also analyzed for chemical composition including noble metals and fissile constituents. At the Savannah River National Laboratory (SRNL) the 3-L Tank 40 SB7b sample was transferred from the shipping container into a 4-L high density polyethylene bottle and solids were allowed to settle over the weekend. Supernate was then siphoned off and circulated through the shipping container to complete the transfer of the sample. Following thorough mixing of the 3-L sample, a 558 g sub-sample was removed. This sub-sample was then utilized for all subsequent analytical samples. Eight separate aliquots of the slurry were digested, four with HNO{sub 3}/HCl (aqua regia) in sealed Teflon? vessels and four with NaOH/Na{sub 2}O{sub 2} (alkali or peroxide fusion) using Zr crucibles. Two Analytical Reference Glass ? 1 (ARG-1) standards were digested along with a blank for each preparation. Each aqua regia digestion and blank was diluted to 1:100 mL with deionized water and submitted to Analytical Development (AD) for inductively coupled plasma ? atomic emission spectroscopy (ICP-AES) analysis, inductively coupled plasma ? mass spectrometry (ICP-MS) analysis, atomic absorption spectroscopy (AA) for As and Se, and cold vapor atomic absorption spectroscopy (CV-AA) for Hg. Equivalent dilutions of the alkali fusion digestions and blank were submitted to AD for ICP-AES analysis. Tank 40 SB7b supernate was collected from a mixed slurry sample in the SRNL Shielded Cells and submitted to AD for ICP-AES, ion chromatography (IC), total base/free OH{sup -}/other base, total inorganic carbon/total organic carbon (TIC/TOC) analyses, and Cs-137 gamma scan. Weighted dilutions of slurry were submitted for IC, TIC/TOC, and total base/free OH-/other base analyses. Activities for U-233, U-235, and Pu-239 were determined from the ICP-MS data for the aqua regia digestions of the Tank 40 WAPS slurry using the specific activity of each isotope. The Pu-241 value was determined from a Pu-238/-241 method.

Bannochie, C. J.

2012-11-06T23:59:59.000Z

385

THE CALCULATION OF BURNABLE POISON CORRECTION FACTORS FOR PWR FRESH FUEL ACTIVE COLLAR MEASUREMENTS  

SciTech Connect

Verification of commercial low enriched uranium light water reactor fuel takes place at the fuel fabrication facility as part of the overall international nuclear safeguards solution to the civilian use of nuclear technology. The fissile mass per unit length is determined nondestructively by active neutron coincidence counting using a neutron collar. A collar comprises four slabs of high density polyethylene that surround the assembly. Three of the slabs contain {sup 3}He filled proportional counters to detect time correlated fission neutrons induced by an AmLi source placed in the fourth slab. Historically, the response of a particular collar design to a particular fuel assembly type has been established by careful cross-calibration to experimental absolute calibrations. Traceability exists to sources and materials held at Los Alamos National Laboratory for over 35 years. This simple yet powerful approach has ensured consistency of application. Since the 1980's there has been a steady improvement in fuel performance. The trend has been to higher burn up. This requires the use of both higher initial enrichment and greater concentrations of burnable poisons. The original analytical relationships to correct for varying fuel composition are consequently being challenged because the experimental basis for them made use of fuels of lower enrichment and lower poison content than is in use today and is envisioned for use in the near term. Thus a reassessment of the correction factors is needed. Experimental reassessment is expensive and time consuming given the great variation between fuel assemblies in circulation. Fortunately current modeling methods enable relative response functions to be calculated with high accuracy. Hence modeling provides a more convenient and cost effective means to derive correction factors which are fit for purpose with confidence. In this work we use the Monte Carlo code MCNPX with neutron coincidence tallies to calculate the influence of Gd{sub 2}O{sub 3} burnable poison on the measurement of fresh pressurized water reactor fuel. To empirically determine the response function over the range of historical and future use we have considered enrichments up to 5 wt% {sup 235}U/{sup tot}U and Gd weight fractions of up to 10 % Gd/UO{sub 2}. Parameterized correction factors are presented.

Croft, Stephen [Los Alamos National Laboratory; Favalli, Andrea [Los Alamos National Laboratory; Swinhoe, Martyn T. [Los Alamos National Laboratory

2012-06-19T23:59:59.000Z

386

CX-008993: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CX-008993: Categorical Exclusion Determination "Continuous Processing of High Thermal Conductivity Polyethylene Fibers and Sheets CX(s) Applied: A9, B3.6 Date: 08222012...

387

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... MD Baro, J. Sort, J. Nogues, Proc. MMM-Intermag Conf. 113, 17, 17B531, 2013. 4, Deep Hydration: Poly(ethylene glycol) Mw ...

388

Sequential pyrolysis of plastic to recover polystyrene, HCl and terephthalic acid  

DOE Patents (OSTI)

A process is described for pyrolyzing plastic waste feed streams containing polyvinyl chloride, polyethylene terephthalate, polystyrene and polyethylene to recover polystyrene, HCl and terephthalic acid comprising: heating the plastic waste feed stream to a first temperature; adding an acid or base catalyst on an oxide or carbonate support; heating the plastic waste feed stream to pyrolyze polyethylene terephthalate and polyvinyl chloride; separating terephthalic acid or HCl; heating to a second temperature to pyrolyze polystyrene; separating styrene; heating the waste feed stream to a third temperature to pyrolyze polyethylene; and separating hydrocarbons. 83 figs.

Evans, R.J.; Chum, H.L.

1995-11-07T23:59:59.000Z

389

Journal of Research Volume 80A  

Science Conference Proceedings (OSTI)

... Heat capacities of polyethylene ... for the electronic energies of charge-transfer complexes between ... Modulus of natural rubber cross-linked by dicumyl ...

2012-10-05T23:59:59.000Z

390

Annual Conference on Fire Research  

Science Conference Proceedings (OSTI)

... of trans and gauche polyethylene, a hydro carbon sludge ... US and international standards for auto matic sprinkler ... documents in the trunk of their car. ...

2008-11-19T23:59:59.000Z

391

Development of an injection augmentation program at the Dixie...  

Open Energy Info (EERE)

water rights, rehabilitating an irrigation well, and constructing a polyethylene pipeline to a dedicated injector.During the first two years of this program four different...

392

Building and Fire Publications  

Science Conference Proceedings (OSTI)

... Using diesel oil and polyethylene beads as fuel, tests were conducted at 0.5 ... these tests, effective reduction in smoke and heat from peak values to ...

393

Celgard LLC | Open Energy Information  

Open Energy Info (EERE)

search Name Celgard LLC Place Charlotte, North Carolina Zip 28273 Product Celgard battery separators are polypropylene andor polyethylene electrolytic membranes used in high...

394

Browse wiki | Open Energy Information  

Open Energy Info (EERE)

energy company profile. OpenEIPageKeyword Celgard LLC + , Energy Company + , Celgard battery separators are polypropylene andor polyethylene electrolytic membranes used in high...

395

Revised version Environmental Chemistry Letters 10, 1-4, 2012. doi : 10.1007/s10311-011-0333-3  

E-Print Network (OSTI)

) Aguilar, F 2001, 'Polyethylene biodigesters: production of biogas and organic fertilizer from animal manure', PowerPoint presentation, viewed 14 December 2010, biogas

Paris-Sud XI, Université de

396

Biopolymers and Surface Modifications  

Science Conference Proceedings (OSTI)

Oct 18, 2011 ... Our results show ceramic-polymer and ceramic-metal hybrid materials ... stability of current polyethylene liner-based load-bearing implants.

397

Image provided by  

E-Print Network (OSTI)

single layer of highly reflective aluminum foil sandwiched between two layers of polyethylene bubbles for use as a radiant barrier for concrete slab foundations.

Covertech Fabricating Inc; Humberline Dr; Th Line

2007-01-01T23:59:59.000Z

398

ANNUAL REPORT CIRACooperative Institute for Research in the Atmosphere  

E-Print Network (OSTI)

(1/4 in., Pt-RTD). The aerosol input line (1/2 in. polyethylene tubing) is inserted toward the bottom

399

Effect of Gold Nanorod Surface Chemistry on Cellular Response  

E-Print Network (OSTI)

Gold nanorods (GNRs) stabilized with cetyltrimethylammonium bromide (CTAB) and GNR functionalized via a ligand exchange method with either thiolated polyethylene glycol (PEG5000) or mercaptohexadecanoic acid (MHDA) were ...

Grabinski, Christin

400

AOCS Recommended Practice Ca 16-75  

Science Conference Proceedings (OSTI)

Polyethylene in Fats and Oils AOCS Recommended Practice Ca 16-75 Methods Methods and Analyses Analytical Chemistry Methods Downloads Methods Downloads AOCS DEFINITION This method determine

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

2  

NLE Websites -- All DOE Office Websites (Extended Search)

in producing products such as polyethylene, polypropylene, methanol, diesel, naphtha and LPG, etc. NETL CO2 Capture Technology Meeting, July 9-12, 2012 in Pittsburgh, PA CHINA...

402

Fermilab | Take Five for Goal Zero | Gloves | Plastic Gloves  

NLE Websites -- All DOE Office Websites (Extended Search)

Gloves Plastic Gloves Description Color Finish Chemical Compatibility FNAL Stock Number Disposable polyethylene gloves Non-sterile, for food contact Clear Smooth, seamless Chemical...

403

Thermal conductivity and other properties of cementitious grouts  

DOE Green Energy (OSTI)

The thermal conductivity and other properties cementitious grouts have been investigated in order to determine suitability of these materials for grouting vertical boreholes used with geothermal heat pumps. The roles of mix variables such as water/cement ratio, sand/cement ratio and superplasticizer dosage were measured. In addition to thermal conductivity, the cementitious grouts were also tested for bleeding, permeability, bond to HDPE pipe, shrinkage, coefficient of thermal expansion, exotherm, durability and environmental impact. This paper summarizes the results for selected grout mixes. Relatively high thermal conductivities were obtained and this leads to reduction in predicted bore length and installation costs. Improvements in shrinkage resistance and bonding were achieved.

Allan, M.

1998-08-01T23:59:59.000Z

404

THERMAL CONDUCTIVITY AND OTHER PROPERTIES OF CEMENTITIOUS GROUTS  

DOE Green Energy (OSTI)

The thermal conductivity and other properties cementitious grouts have been investigated in order to determine suitability of these materials for grouting vertical boreholes used with geothermal heat pumps. The roles of mix variables such as water/cement ratio, sand/cement ratio and superplasticizer dosage were measured. In addition to thermal conductivity, the cementitious grouts were also tested for bleeding, permeability, bond to HDPE pipe, shrinkage, coefficient of thermal expansion, exotherm, durability and environmental impact. This paper summarizes the results for selected grout mixes. Relatively high thermal conductivities were obtained and this leads to reduction in predicted bore length and installation costs. Improvements in shrinkage resistance and bonding were achieved.

ALLAN,M.

1998-05-01T23:59:59.000Z

405

Design of efficient filter on liquid crystal polymer substrate for 5 GHz wireless LAN applications  

Science Conference Proceedings (OSTI)

Next generation wireless communications terminals will demand the use of advanced component integration processes and high density packaging technologies in order to reduce size and to increase performance. This paper presents high-density multilayer ... Keywords: LCP, MCM, RF front-end, bandpass filter, low noise amplifier, quality factor

Yasar Amin; Hannu Tenhunen; Habibullah Jamal; Li-Rong Zheng

2005-03-01T23:59:59.000Z

406

Modeling and simulation of power cable insulation  

Science Conference Proceedings (OSTI)

The use of power cables for transmission and distribution of electrical power have increased since the advent of suitable, reliable and economical polymeric insulating material; such as cross-linked polyethylene (XLPE). Power cables plays crucial role ... Keywords: cross-linked polyethylene (XLPE), imperfect insulation, local defects, lossy insulation, partial discharge (PD)

K. D. Patil; A. A. Bhole; W. Z. Gandhare

2010-02-01T23:59:59.000Z

407

Optical properties of CdS nanocrystal covered by polymer chains on the surface  

Science Conference Proceedings (OSTI)

We prepared novel CdS nanocrystal by colloid technique; CdS nanocrystal possessing polyethylene glycol tethered chains (PEG-TC) on the surface. A relatively sharp optical absorption peak was observed at around 3.4 eV. The size of the nanocrystal was ... Keywords: CdS, nanocrystals, photoluminescence, polyethylene glycol, quantum dot

I. Umezu; R. Koizumi; K. Mandai; T. Aoki-Matsumoto; K. Mizuno; M. Inada; A. Sugimura; Y. Sunaga; T. Ishii; Y. Nagasaki

2003-05-01T23:59:59.000Z

408

Abbreviations, Symbols, and Tradenames  

Science Conference Proceedings (OSTI)

...ratio LDPE low-density polyethylene LED light-emitting diode LEFM linear-elastic fracture mechanics LFM liquid-film migration LIM liquid injection molding LLDPE linear low-density polyethylene ln natural logarithm (base e) log common logarithm (base 10) LOI limiting oxygen index LPS liquid-phase sintering...

409

Radiolytic gas production in the alpha particle degradation of plastics  

DOE Green Energy (OSTI)

Net gas generation due to alpha particle irradiation of polyethylene and polyvinyl chloride was investigated. Experiments were performed in an air environment at 30, 60, and 100{degree}C. The predominant radiolytic degradation products of polyethylene were hydrogen and carbon dioxide with a wide variety of trace organic species noted. Irradiation of polyvinyl chloride resulted in the formation of HCl in addition to the products observed for polyethylene. For both plastic materials, a strong enhancement of net yields was noted at 100{degree}C.

Reed, D.T.; Hoh, J.; Emery, J. [Argonne National Lab., IL (United States); Hobbs, D. [Westinghouse Savannah River Co., Aiken, SC (United States)

1992-05-01T23:59:59.000Z

410

Radiolytic gas production in the alpha particle degradation of plastics  

DOE Green Energy (OSTI)

Net gas generation due to alpha particle irradiation of polyethylene and polyvinyl chloride was investigated. Experiments were performed in an air environment at 30, 60, and 100{degree}C. The predominant radiolytic degradation products of polyethylene were hydrogen and carbon dioxide with a wide variety of trace organic species noted. Irradiation of polyvinyl chloride resulted in the formation of HCl in addition to the products observed for polyethylene. For both plastic materials, a strong enhancement of net yields was noted at 100{degree}C.

Reed, D.T.; Hoh, J.; Emery, J. (Argonne National Lab., IL (United States)); Hobbs, D. (Westinghouse Savannah River Co., Aiken, SC (United States))

1992-01-01T23:59:59.000Z

411

Multiscale Analysis of the 7 December 1998 Great Salt Lake–Effect Snowstorm  

Science Conference Proceedings (OSTI)

The large-scale and mesoscale structure of the Great Salt Lake–effect snowstorm of 7 December 1998 is examined using radar analyses, high-density surface observations, conventional meteorological data, and a simulation by the Pennsylvania State ...

W. James Steenburgh; Daryl J. Onton

2001-06-01T23:59:59.000Z

412

Other Related Alloys and Properties  

Science Conference Proceedings (OSTI)

Mar 15, 2012 ... The lethality of depleted uranium (DU) as a kinetic energy penetrator (KEP) is ascribed to its high density 18.95 g/cm3 and its ability to undergo ...

413

The Effect of Heat Waves and Drought on Surface Wind Circulations in the Northeast of the Iberian Peninsula during the Summer of 2003  

Science Conference Proceedings (OSTI)

Variations in the diurnal wind pattern associated with heat waves and drought conditions are investigated climatologically at a regional level (northeast of the Iberian Peninsula). The study, based on high-density observational evidence and fine ...

Pedro A. Jiménez; Jordi Vilà-Guerau de Arellano; J. Fidel González-Rouco; Jorge Navarro; Juan P. Montávez; Elena García-Bustamante; Jimy Dudhia

2011-10-01T23:59:59.000Z

414

Relativistic electron beam transport for fast ignition relevant scenarios  

E-Print Network (OSTI)

A crucial issue surrounding the feasibility of fast ignition, an alternative inertial confinement fusion scheme, is the ability to efficiently couple energy from an incident short-pulse laser to a high-density, pre-compressed ...

Cottrill, Larissa A

2009-01-01T23:59:59.000Z

415

Magnetic Nanostructures in Modern Technology: Spintronics, Magnetic MEMS and Recording, 1st edition  

Science Conference Proceedings (OSTI)

A team of outstanding scientists in the field of modern magnetic nanotechnologies illustrates the state of the art in several areas of advanced magneto-electronic devices, magnetic micro-electromechanical systems and high density information storage ...

Bruno Azzerboni; Giovanni Asti; Luigi Pareti; Massimo Ghidini

2007-10-01T23:59:59.000Z

416

A Spatial Analytic Method for the Preliminary Design of a District Energy Network Utilizing Waste Heat in Mixed-Use Jurisdictions.  

E-Print Network (OSTI)

??A city’s characteristics of mixed-use zoning, diverse built form, high-density development, and residual heat generation by urban processes, present potential for optimizing the thermal energy… (more)

Ronn, Dave

2011-01-01T23:59:59.000Z

417

Meso-? Scale Perturbations of the Wind Field by Thunderstorm Cells  

Science Conference Proceedings (OSTI)

Analysis of data from the high density storm-scale rawinsonde network of SESAME during the storm events on 2 May 1979 showed the existence of persistent and strong regions of tropospheric convergence and divergence which were detectable on the ...

Stan L. Ulanski; Gerald M. Heymsfield

1986-04-01T23:59:59.000Z

418

Real-time analog acquisition of electrophysiological signals with Soma  

E-Print Network (OSTI)

Soma is a high-density recording system for real-time acquisition and analysis of extracellular electrophysiological signals. Here I describe the design, implementation, and evaluation of the Soma Acquisition Board, an ...

Jonas, Eric Michael

2009-01-01T23:59:59.000Z

419

Materials Built from Ultra-Light Elements. Final Scientific/Technical Report  

DOE Green Energy (OSTI)

applications including gas storage and separation and catalysis. These include lithium-based metal-organic frameworks, magnesium-based metal-organic frameworks, and high gas uptake in porous frameworks with high density of open donor sites.

Feng, Pingyun

2014-01-10T23:59:59.000Z

420

Social congestion in Shanghai : an urban housing project designed on its sections  

E-Print Network (OSTI)

The new housing developments of Shanghai rely on high-rise building, demolishing the prevailing low-rise high-density housing, known as Lilong housing, built in the early 20th century, and known as Lilong housing. The ...

Ge, Wenjun, S.M. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Thermal hydraulics analysis of the MIT research reactor in support of a low enrichment uranium (LEU) core conversion  

E-Print Network (OSTI)

The MIT research reactor (MITR) is converting from the existing high enrichment uranium (HEU) core to a low enrichment uranium (LEU) core using a high-density monolithic UMo fuel. The design of an optimum LEU core for the ...

Ko, Yu-Chih, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

422

On the use of NAND flash memory in high-performance relational databases  

E-Print Network (OSTI)

High-density NAND flash storage has become relatively inexpensive due to the popularity of various consumer electronics. Recently, several manufacturers have released IDE-compatible NAND flash-based drives in sizes up to ...

Myers, Daniel (Daniel Sumers)

2008-01-01T23:59:59.000Z

423

Well blowout rates in California Oil and Gas District 4--Update and Trends  

E-Print Network (OSTI)

high density of steam injection wells for thermal recovery.kilometres 20 miles Steam-injection wells per km 2 (mi 2 )average number of steam injection well blowouts and blowouts

Benson, Sally M.

2010-01-01T23:59:59.000Z

424

One Hundred Inches in One Hundred Hours: Evolution of a Wasatch Mountain Winter Storm Cycle  

Science Conference Proceedings (OSTI)

Synoptic, orographic, and lake-effect precipitation processes during a major winter storm cycle over the Wasatch Mountains of northern Utah are examined using radar imagery, high-density surface data, and precipitation observations from Alta Ski ...

W. James Steenburgh

2003-12-01T23:59:59.000Z

425

Energy storage in carbon nanotube super-springs  

E-Print Network (OSTI)

A new technology is proposed for lightweight, high density energy storage. The objective of this thesis is to study the potential of storing energy in the elastic deformation of carbon nanotubes (CNTs). Prior experimental ...

Hill, Frances Ann

2008-01-01T23:59:59.000Z

426

Business Case Slide 16: High-Volume: Casks - Basis  

NLE Websites -- All DOE Office Websites (Extended Search)

Basis Previous Slide Next Slide Table of Contents High-Volume: Casks - Basis Basis Storage casks with high-density shielding can be directly loaded in reactor pools Eliminates a...

427

Fear and loathing in Massachusetts : Chapter 40B, community opposition, and residential property value  

E-Print Network (OSTI)

This thesis asks and answers an important question in the heated debate concerning M.G.L.c. 40B, the state's Comprehensive Permit Law: "Do large-scale, high-density Chapter 40B multi- family rental developments negatively ...

Ritchay, David J. (David James), 1976-

2004-01-01T23:59:59.000Z

428

A queuing model of airport congestion and policy implications at JFK and EWR  

E-Print Network (OSTI)

Since the phasing-out of the High Density Rule, access to major commercial airports in the United States has been unconstrained or, in the case of the airports of New York, weakly constrained. This largely unregulated ...

Jacquillat, Alexandre

2012-01-01T23:59:59.000Z

429

Energy Research at The State University of New York  

E-Print Network (OSTI)

among high-density deer herds. Deer can foster Lyme Disease, a tick-borne disease that can years, there is evidence that deer ticks (Ixodes scapularis), the primary vector for Lyme Disease

Suzuki, Masatsugu

430

Plasma and Ion Sources in Large Area Coatings: A Review  

E-Print Network (OSTI)

A. Popov, “High Density Plasma Sources,” Park Ridge, N.J. :et al. , IEEE Trans. Plasma Sci. 26 (1998) J. Pelletier, “R. Winter, and J. Engemann, Plasma Sources Sci. Technol. I.

Anders, Andre

2005-01-01T23:59:59.000Z

431

Structural and economic analysis of capesize bulk carriers  

E-Print Network (OSTI)

Structural failures of bulk carriers continue to account for the loss of many lives every year. Capes are particularly vulnerable to cracking because of their large length, their trade in high density cargos, and the high ...

Hadjiyiannis, Nicholas

2010-01-01T23:59:59.000Z

432

The synthesis of highly aligned cupric oxide nanowires by heating copper foil  

Science Conference Proceedings (OSTI)

We have investigated the effects of grain size and orientation of copper substrates for the growth of cupric oxide nanowires by thermal oxidation method. Long, less-roughness, high-density, and aligned cupric oxide nanowires have been synthesized by ...

Jianbo Liang; Naoki Kishi; Tetsuo Soga; Takashi Jimbo

2011-01-01T23:59:59.000Z

433

Batteries - Next-generation Li-ion batteries Breakout session  

NLE Websites -- All DOE Office Websites (Extended Search)

power, stability) * Lack of new high-energy intercalation materials * Lack of stable high-voltage electrolytes * Lack of cycleable, high-density anode (e.g. metallic lithium)...

434

MST eNews: Los Alamos National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

materials From David's Desk Researchers demonstrate hot-pressing of LiTaO3 ferroelectic ceramic with high density New explorations in the effect of temperature on grain boundary...

435

????????????? ??????????? ??????????...  

National Nuclear Security Administration (NNSA)

of VNIIEF. Physics and technology of high density energy" V.2 (RFNC-VNIIEF Publishing House, Sarov, 2011) p. 268-297. Acknowledgements This work was performed in Institute of...

436

Design automation and analysis of three-dimensional integrated circuits  

E-Print Network (OSTI)

This dissertation concerns the design of circuits and systems for an emerging technology known as three-dimensional integration. By stacking individual components, dice, or whole wafers using a high-density electromechanical ...

Das, Shamik, 1977-

2004-01-01T23:59:59.000Z

437

Atrium House solar revitalization  

E-Print Network (OSTI)

The idea behind the Atrium House Solar Revitalization project, may be briefly presented as: energy conserving, low rise, high density, related- to- the-sky residences. The proposed system consists of a reticulate grid - ...

Malamuceanu, Dan Roland

1984-01-01T23:59:59.000Z

438

An experimental investigation of heat transfer to hydrogen peroxide in microtubes  

E-Print Network (OSTI)

Because of its strong oxidizing properties, high density, low-toxicity and environmentally friendly decomposition products, concentrated hydrogen peroxide has regained popularity as a propellant in many rocket applications. ...

Bernier, Mathieu, 1979-

2004-01-01T23:59:59.000Z

439

Field solver technologies for variation-aware interconnect parasitic extraction  

E-Print Network (OSTI)

Advances in integrated circuit manufacturing technologies have enabled high density onchip integration by constantly scaling down the device and interconnect feature size. As a consequence of the ongoing technology scaling ...

El-Moselhy, Tarek Ali

2010-01-01T23:59:59.000Z

440

A Physical Formulation of Atmospheric Transmittances for the Massive Assimilation of Satellite Infrared Radiances  

Science Conference Proceedings (OSTI)

A continuous assimilation of high-density global satellite observations is required in order to improve numerical weather prediction analyses used to start forecasts. Until now, it was assumed that efficiency requirements imposed the use of ...

L. Garand; D. S. Turner; C. Chouinard; J. Hallé

1999-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Commercialization of germanium based nanocrystal memory  

E-Print Network (OSTI)

This thesis explores the commercialization of germanium-based nanocrystal memories. Demand for smaller and faster electronics and embedded systems supports the development of high-density, low-power non-volatile electronic ...

Seow, Kian Chiew

2007-01-01T23:59:59.000Z

442

Superhydrophobic Properties of Polymethylmethacrylate (PMMA)  

Science Conference Proceedings (OSTI)

Abstract Scope, Recent works has shown that natural phenomena seen in some ... Optical Thin Films for Gas Sensing in Advanced Coal Fired Power Plants ... Ferrite (S-BaFe) Nanoparticles for Ultra High-Density Information Data Storage.

443

CX-010399: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

High Density Fuel Material for Light Water Reactors CX(s) Applied: B1.31 Date: 04/25/2013 Location(s): Idaho Offices(s): Idaho Operations Office

444

CX-010059: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

High Density Fuel Material for Light Water Reactors (LWRs) CX(s) Applied: B1.31 Date: 01/14/2013 Location(s): Idaho Offices(s): Nuclear Energy

445

Energy and quality scalable wireless communication  

E-Print Network (OSTI)

Nodes for emerging, high-density wireless networks will face the dual challenges of continuous, multi-year operation under diverse and challenging operating conditions. The wireless communication subsystem, a substantial ...

Min, Rex K. (Rex Kee), 1976-

2003-01-01T23:59:59.000Z

446

Sparse dictionary methods for EEG signal classification in face perception  

E-Print Network (OSTI)

This paper presents a systematic application of machine learning techniques for classifying high-density EEG signals elicited by face and non-face stimuli. The two stimuli used here are derived from the vase-faces illusion ...

Shariat, Shahriar

447

Address generation for nanowire decoders  

Science Conference Proceedings (OSTI)

Nanoscale crossbars built from nanowires can form high density memories and programmable logic devices. To integrate such nanoscale devices with CMOS circuits, nanowire decoders were invented. Due to the stochastic nature of the nanoscale fabrication, ... Keywords: decoder, nanowire, testing

Jia Wang; Ming-Yang Kao; Hai Zhou

2007-03-01T23:59:59.000Z

448

Synthetic HDL created  

Science Conference Proceedings (OSTI)

Scientists at Northwestern University (Evanston, Illinois, USA) have created a promising new weapon-synthetic high-density lipoprotein (HDL), the "good" cholesterol-that could help fight chronically high cholesterol levels. Synthetic HDL created ...

449

Neighborhood design for Cambridge  

E-Print Network (OSTI)

This thesis examines the problem of modest high-density low-rise housing design for a site in Cambridge, Massachusetts. It considers first the general changes in housing demand and the housing industry which have made it ...

Reynolds, Margaret (Margaret Philpott Ray), 1953-

1981-01-01T23:59:59.000Z

450

D- PRODUCTION BY MULTIPLE CHARGE-TRANSFER COLLISIONS IN METAL-VAPOR TARGETS  

E-Print Network (OSTI)

an oven, a jet, or a heat pipe. An oven is usually easy tocan be difficult. A heat pipe allows high densities,of target (jet, oven, heat pipe, etc). Factors to consider

Schlachter, A.S.

2010-01-01T23:59:59.000Z

451

A hybrid data structure for dense keys in in-memory database systems  

E-Print Network (OSTI)

This thesis presents a data structure which performs well for in-memory indexing of keys that are unevenly distributed into clusters with a high density of keys. This pattern is prevalent, for example, in systems that use ...

Muñiz Navarro, José Alberto

2010-01-01T23:59:59.000Z

452

Rational control of hydrothermal nanowire synthesis and its applications  

E-Print Network (OSTI)

Hydrothermal nanowire synthesis is a rapidly emerging nanowire discipline that enables low temperature growth and batch process. It has a major impact on the development of novel energy conversion devices, high density ...

Joo, Jaebum

2010-01-01T23:59:59.000Z

453

Strategies and Methodologies for Integrating Design Computation...  

NLE Websites -- All DOE Office Websites (Extended Search)

Methodologies for Integrating Design Computation into the Design of High Density Quality Living Environment Speaker(s): Jin Yeu Tsou Date: October 9, 2002 - 12:00pm Location:...

454

Stabilization of highly polarized PbTiO[subscript 3] nanoscale capacitors due to in-plane symmetry breaking at the interface  

E-Print Network (OSTI)

Stable ferroelectric (FE) phases in nanometer-thick films would enable ultra-high density and fast FE field effect transistors (FeFETs), and the stability of ferroelectricity in ultrathin films has been under intense ...

Polanco, Miguel Angel Mendez

455

Topographic Distortion of a Cold Front over the Snake River Plain and Central Idaho Mountains  

Science Conference Proceedings (OSTI)

The topographic distortion of a cold front over the Snake River Plain (SRP) and central Idaho Mountains on 3 December 1998 is described using high-density surface observations from MesoWest, a collection of meteorological networks over the ...

W. James Steenburgh; Thomas R. Blazek

2001-06-01T23:59:59.000Z

456

Development of a strong field helicon plasma source  

Science Conference Proceedings (OSTI)

We developed a high-density helicon plasma source with a very strong field of up to 10 kG. Using a double-loop antenna wound around a quartz tube, 9.5 cm in inner diameter and 90 cm in axial length, initial plasmas with a high density more than 10{sup 13} cm{sup -3} were successfully produced with a radio frequency power less than a few kilowatts, and with changing magnetic fields, fill pressures, and gas species.

Shinohara, Shunjiro; Mizokoshi, Hiroshi [Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580 (Japan)

2006-03-15T23:59:59.000Z

457

New polymeric biomaterial interfaces for biosensor applications  

E-Print Network (OSTI)

To fabricate living cell-based immunological sensors, we have examined two PEO-based biomaterials that can be patterned to generate cellular array templates: poly(allylamine)-g- poly(ethylene glycol) graft-copolymer and ...

Kim, Heejae

2005-01-01T23:59:59.000Z

458

Battery having electrode with hydrophilic polymer binder  

SciTech Connect

In a preferred embodiment is disclosed a zinc electrode for an alkaline zinc-nickel hydroxide cell wherein zinc-rich active electrode material is bonded to a conductive grid with hydrophilic polyethylene fibers.

Meibuhr, S.G.; Witherspoon, R.R.

1982-07-13T23:59:59.000Z

459

Journal of Applied  

E-Print Network (OSTI)

and other research outputs A small-angle X-ray scattering study of the effect of chain architecture on the shear-induced crystallization of branched and linear poly(ethylene terephthalate)

Tracey Hanley; A David Sutton; A Ellen Heeley; B Graeme Moad C; Knott A

2007-01-01T23:59:59.000Z

460

PUMICE AGGREGATES FOR INTERNAL WATER CURING  

Science Conference Proceedings (OSTI)

... Quartz sand, 0-4 mm 1409 kg/m3 1281 kg/m3 1171 kg ... 3.2 Autogenous strain The mortars were cast into corrugated, tight, low-density polyethylene ...

2004-04-02T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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

Pumice Aggregates for Internal Water Curing  

Science Conference Proceedings (OSTI)

... Quartz sand, 0-4 mm 1409 kg/m3 1281 kg/m3 1171 kg ... 3.2 Autogenous strain The mortars were cast into corrugated, tight, low-density polyethylene ...

2004-12-06T23:59:59.000Z

462

Effect of oxide nanoparticles on thermal and mechanical properties of electrospun separators for lithium-ion batteries  

Science Conference Proceedings (OSTI)

This study reports the fabrication and characterization of poly(ethylene oxide) (PEO) and poly(vinylidenefluoride-cochlorotrifluoroethylene) (PVDF-CTFE) nanofibrous separators for lithium-ion batteries loaded with different amounts of fumedsilica and ...

Marco Zaccaria, Chiara Gualandi, Davide Fabiani, Maria Letizia Focarete, Fausto Croce

2012-01-01T23:59:59.000Z

463

The effect of P-selectin pattern width on HL-60 cell rolling behavior  

E-Print Network (OSTI)

The effect of varying the width of P-selectin band patterns on the rolling behavior of HL- 60 myeloid cells along edges of the band patterns was studied. The P-selectin and polyethylene glycol (PEG) pattern was produced ...

Sung, Minhee

2010-01-01T23:59:59.000Z

464

Test Protocols for Calculation Validation and Assessment of Parameters Affecting the TMB Failure Mode of HPFF Systems  

Science Conference Proceedings (OSTI)

This report recommends methods for measuring the thermomechanical performance of transmission-class cables with extruded cross-linked polyethylene (XLPE) insulation that are installed in duct-manhole systems.

2008-12-11T23:59:59.000Z

465

Hydrophobic Polycationic Coatings Disinfect Poliovirus and Rotavirus Solutions  

E-Print Network (OSTI)

Coating surfaces with N-alkylated polyethylenimines (PEIs), namely branched N,N-hexyl,methyl-PEI via covalent attachment to glass or linear N,N-dodecyl,methyl-PEI by physical deposition (“painting”) onto polyethylene, ...

Larson, Alyssa Maxine

466

Investigating the stability of viscoelastic stagnation flows in T-shaped microchannels  

E-Print Network (OSTI)

We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) solution using T-shaped microchannels. The precise flow rate control and well-defined geometries achievable with microfluidic ...

Soulage, Johannes

467

OUTLINE  

Science Conference Proceedings (OSTI)

... Poly(ethylene oxide) in d-ethanol phase separated (2-phase) mixed phase (1-phase) ... d-Water Fraction PEO in d-ethanol/d-water Mixtures UCST ...

2013-06-12T23:59:59.000Z

468

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... May 29 3 S. Shin, B. 14414 Salt effect on clustering 10CB Hammouda Hammouda, D. Ho, R. NIST of poly(ethylene oxide) Briber in Ethanol Jun 1 ...

469

Presentation and accessibility of surface bound ligands on amphiphilic graft copolymer films  

E-Print Network (OSTI)

Amphiphilic comb-type graft copolymers comprising a poly(methyl methacrylate) (PMMA) backbone and short, polyethylene oxide (PEO) side chains, PMMA-g-PEO, are proposed to self-organize at the polymer/water interface, ...

Kuhlman, William A

2007-01-01T23:59:59.000Z

470

Iterated Stretching, Extensional Rheology and Formation of Beads-on-a-String Structures in Polymer Solutions  

E-Print Network (OSTI)

The transient extensional rheology and the dynamics of elastocapillary thinning in aqueous solutions of polyethylene oxide (PEO) are studied with high-speed digital video microscopy. At long times, the evolution of the ...

Oliveira, Monica S. N.

2005-12-01T23:59:59.000Z

471

Solvothermal synthesis of Gd2O3: Eu3+ luminescent nanowires  

Science Conference Proceedings (OSTI)

Uniform Gd2O3 : Eu3+ luminescent nanowires were prepared on a large scale by a facile solvothermal method using polyethylene glycol (PEG-2000) as template and ethanol as solvent; the properties and the structure were ...

Guixia Liu; Song Zhang; Xiangting Dong; Jinxian Wang

2010-01-01T23:59:59.000Z

472

Surface-Modified Membrane as A Separator for Lithium-Ion Polymer Battery  

E-Print Network (OSTI)

This paper describes the fabrication of novel modified polyethylene (PE) membranes using plasma technology to create high-performance and cost-effective separator membranes for practical applications in lithium-ion polymer ...

Kim, Jun Young

473

Variation in joint fluid composition and its effect on the tribology of replacement joint articulation  

E-Print Network (OSTI)

Polyethylene wear is a significant clinical problem limiting the long-term survival of joint replacement prostheses, particularly in total hip arthroplasty (THA) and total knee arthroplasty (TKA). Although the tribology ...

Mazzucco, Daniel Clarke, 1976-

2003-01-01T23:59:59.000Z

474

STUDY OF ACCELERATED AGING OF 15 kV XLPE AND EPR CABLE INSULATION BY SWITCHING IMPULSES AND ELEVATED AC VOLTAGE.  

E-Print Network (OSTI)

?? Accelerated aging of 15 kV Cross-linked Polyethylene (XLPE) and Ethylene Propylene Rubber (EPR) power cables was carried out in the experiments set for the… (more)

Cao, Linfeng

2010-01-01T23:59:59.000Z

475

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... D. Ho, R. NIST of poly(ethylene oxide) Briber in Ethanol Jun 1 1 A Norman+ H King To be announced 10CB Butler (ExxonMobil) EXM Jun 2 3 H ...

476

Zwitterionic Group VIII transition metal initiators supported by olefin ligands  

DOE Patents (OSTI)

A zwitterionic Group VIII transition metal complex containing the simple and relatively small 3-(arylimino)-but-1-en-2-olato ligand that catalyzes the formation of polypropylene and high molecular weight polyethylene. A novel feature of this catalyst is that the active species is stabilized by a chelated olefin adduct. The present invention also provides methods of polymerizing olefin monomers using zwitterionic catalysts, particularly polypropylene and high molecular weight polyethylene.

Bazan, Guillermo C. (Goleta, CA); Chen, Yaofeng (Shanghai, CN)

2011-10-25T23:59:59.000Z

477

Nano-Composite Dielectrics on Medium-Voltage Model Cables  

Science Conference Proceedings (OSTI)

EPRI early recognized the potential for nanotechnology in power distribution and started a program in 2003 to explore the possibilities of using the technology to enhance the properties of high-voltage (HV) cable dielectrics based on both polyethylene and on ethylene-propylene rubber. This research resulted in encouraging findings, particularly for a formulation based on functionalized silicon dioxide nanoparticles in a cross-linked polyethylene (XLPE) polymer. Following this success, EPRI entered into a...

2007-12-19T23:59:59.000Z

478

Critical masses of highly enriched uranium diluted with matrix material.  

SciTech Connect

Radioactive waste containing fissile material is frequently encountered in decontamination and decommissioning activities. For the most part, this waste is placed in containers or drums and stored in storage facilities. The amount of fissile material in each drum is generally small because of criticality safety limits that have been calculated with computer transport codes such as MCNP,1 KENO,2 or ONEDANT.3 To the best of our knowledge, no experimental critical mass data are available to verify the accuracy of these calculations or any calculations for systems containing fissile material (U-235, Pu-239, U-233) in contact with matrix material such as Al2O3, CaO, SiO2, Al, MgO, etc. The experiments presented in this paper establish the critical masses of highly enriched uranium foils diluted to various X/235U ratios with polyethylene and SiO2, polyethylene and aluminum, polyethylene and MgO, polyethylene and Gd, polyethylene and Fe, and moderated and reflected with polyethylene. In addition, these critical mass experimental data will be used to validate cross section data.

Sanchez, R. G. (Rene G.); Loaiza, D. J. (David J.); Kimpland, R. H. (Robert H.)

2002-01-01T23:59:59.000Z

479

GEOTHERMAL HEAT PUMP GROUTING MATERIALS  

DOE Green Energy (OSTI)

The thermal conductivity of cementitious grouts has been investigated in order to determine suitability of these materials for grouting vertical boreholes used with geothermal heat pumps. The roles of mix variables such as water/cement ratio, sand/cement ratio and superplasticizer dosage were measured. The cement-sand grouts were also tested for rheological characteristics, bleeding, permeability, bond to HDPE pipe, shrinkage, coefficient of thermal expansion, exotherm, durability and environmental impact. This paper summarizes the thermal conductivity, permeability, bonding and exotherm data for selected cementitious grouts. The theoretical reduction in bore length that could be achieved with the BNL-developed cement-sand grouts is examined. Finally, the FY 98 research and field trials are discussed.

ALLAN,M.

1998-04-01T23:59:59.000Z

480

Geothermal heat pump grouting materials  

Science Conference Proceedings (OSTI)

The thermal conductivity of cementitious grouts has been investigated in order to determine suitability of these materials for grouting vertical boreholes used with geothermal heat pumps. The roles of mix variables such as water/cement ratio, sand/cement ratio and superplasticizer dosage were measured. The cement-sand grouts were also tested for rheological characteristics, bleeding, permeability, bond to HDPE pipe, shrinkage, coefficient of thermal expansion, exotherm, durability and environmental impact. This paper summarizes the thermal conductivity, permeability, bonding and exotherm data for selected cementitious grouts. The theoretical reduction in bore length that could be achieved with the BNL-developed cement-sand grouts is examined. Finally, the FY 98 research and field trials are discussed.

Allan, M.

1998-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "hdpe high-density polyethylene" 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.


481

Review of encapsulation technologies  

SciTech Connect

The use of encapsulation technology to produce a compliant waste form is an outgrowth from existing polymer industry technology and applications. During the past 12 years, the Department of Energy (DOE) has been researching the use of this technology to treat mixed wastes (i.e., containing hazardous and radioactive wastes). The two primary encapsulation techniques are microencapsulation and macroencapsulation. Microencapsulation is the thorough mixing of a binding agent with a powdered waste, such as incinerator ash. Macroencapsulation coats the surface of bulk wastes, such as lead debris. Cement, modified cement, and polyethylene are the binding agents which have been researched the most. Cement and modified cement have been the most commonly used binding agents to date. However, recent research conducted by DOE laboratories have shown that polyethylene is more durable and cost effective than cements. The compressive strength, leachability, resistance to chemical degradation, etc., of polyethylene is significantly greater than that of cement and modified cement. Because higher waste loads can be used with polyethylene encapsulant, the total cost of polyethylene encapsulation is significantly less costly than cement treatment. The only research lacking in the assessment of polyethylene encapsulation treatment for mixed wastes is pilot and full-scale testing with actual waste materials. To date, only simulated wastes have been tested. The Rocky Flats Environmental Technology Site had planned to conduct pilot studies using actual wastes during 1996. This experiment should provide similar results to the previous tests that used simulated wastes. If this hypothesis is validated as anticipated, it will be clear that polyethylene encapsulation should be pursued by DOE to produce compliant waste forms.

Shaulis, L.

1996-09-01T23:59:59.000Z

482

Cotton Electric Coop, Inc | Open Energy Information  

Open Energy Info (EERE)

Cotton Electric Coop, Inc Cotton Electric Coop, Inc Place Oklahoma Utility Id 4401 Utility Location Yes Ownership C NERC Location SPP NERC SPP Yes RTO SPP Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial Service High Density-Single Phase Commercial Commercial Service High Density-Three Phase Commercial Commercial Service-Single Phase Commercial Commercial Service-Three Phase Commercial Commercial Time -Of- Use Service-Single Phase Commercial Commercial Time -Of- Use Service-Three Phase Commercial Cotton Gins Industrial General Service High Density-Single Phase Residential

483

Parallel data transfer network controlled by a dynamically reconfigurable serial network  

DOE Patents (OSTI)

This patent is a real time high density data communication system designed to operate efficiently in a dynamically configurable, multiprocessor parallel processing environment. In this design a serial communication network is utilized to disseminate commands from a master processor to the slave processors, to control transmission of high density data, to effect communication protocol, and to monitor the status of each slave processor. A parallel channel communication network is utilized in conjunction with two triple port memories at each processor node in the system to efficiently transmit high density data for sustained or burst intervals without having to interleave communication control messages. Each processor node includes a transputer, a digital signal processor, a parallel transfer controller. A very low software overhead time for starting and ending the transfer of data is incurred using this design in contrast with a scalable coherent interface system in which 25% of transmission time is devoted to the communication protocol.

Crosetto, D.B.

1992-01-01T23:59:59.000Z

484

Nanoscale Engineering Of Radiation Tolerant Silicon Carbide  

Science Conference Proceedings (OSTI)

Radiation tolerance is determined by how effectively the microstructure can remove point defects produced by irradiation. Engineered nanocrystalline SiC with a high-density of stacking faults (SFs) has significantly enhanced recombination of interstitials and vacancies, leading to selfhealing of irradiation-induced defects. While single crystal SiC readily undergoes an irradiationinduced crystalline to amorphous transformation at room temperature, the nano-engineered SiC with a high-density of SFs exhibits more than an order of magnitude increase in radiation resistance. Molecular dynamics simulations of collision cascades show that the nano-layered SFs lead to enhanced mobility of interstitial Si atoms. The remarkable radiation resistance in the nano-engineered SiC is attributed to the high-density of SFs within nano-sized grain structures that significantly enhance point defect annihilation.

Zhang, Yanwen; Ishimaru, Manabu; Varga, Tamas; Oda, Takuji; Hardiman, Christopher M.; Xue, Haizhou; Katoh, Yutai; Shannon, Steven; Weber, William J.

2012-08-14T23:59:59.000Z

485

Critical masses of uranium diluted with matrix material  

SciTech Connect

Critical masses of square-prisms of highly enriched uranium diluted in various X/235U ratios with matrix material and polyethylene were measured. The Configuration cores were 22.86-cm and 45.72-cm square and were reflected with 8.1 3-cm and 10.1 6-cm thick side polyethylene reflectors, respectively. The configurations had 10.1 6-cm thick top and bottom polyethylene reflectors. For some configurations, the Rossi-a, which is an eigenvalue value characteristic for a particular configuration, was measured to establish a reactivity scale based on the degree of subcriticality . Finally, the critical mass experiments are compared with values calculated with MCNP and ENDF/B-VI cross-sections.

Sanchez, R. G. (Rene G.); Loaiza, D. J. (David J.); Kimpland, R. H. (Robert H.)

2002-01-01T23:59:59.000Z

486

Process for separating and recovering an anionic dye from an aqueous solution  

DOE Patents (OSTI)

A solid/liquid phase process for the separation and recovery of an anionic dye from an aqueous solution is disclosed. The solid phase comprises separation particles having surface-bonded poly(ethylene glycol) groups, whereas the aqueous solution from which the anionic dye molecules are separated contains a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved lyotropic salt. After contact between the aqueous solution and separation particles, the anionic dye is bound to the particles. The bound anionic dye molecules are freed from the separation particles by contacting the anionic dye-bound particles with an aqueous solution that does not contain a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved lyotropic salt to form an aqueous anionic dye solution whose anionic dye concentration is preferably higher than that of the initial dye-containing solution.

Rogers, Robin (DeKalb, IL); Horwitz, E. Philip (Naperville, IL); Bond, Andrew H. (Tallahassee, FL)

1998-01-01T23:59:59.000Z

487

Process for separating and recovering an anionic dye from an aqueous solution  

DOE Patents (OSTI)

A solid/liquid phase process for the separation and recovery of an anionic dye from an aqueous solution is disclosed. The solid phase comprises separation particles having surface-bonded poly(ethylene glycol) groups, whereas the aqueous solution from which the anionic dye molecules are separated contains a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved lyotropic salt. After contact between the aqueous solution and separation particles, the anionic dye is bound to the particles. The bound anionic dye molecules are freed from the separation particles by contacting the anionic dye-bound particles with an aqueous solution that does not contain a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved lyotropic salt to form an aqueous anionic dye solution whose anionic dye concentration is preferably higher than that of the initial dye-containing solution. 7 figs.

Rogers, R.; Horwitz, E.P.; Bond, A.H.

1998-01-13T23:59:59.000Z

488

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer were selected from the class consisting of ethylene and polyethylene glycols, propylene and polypropylene glycols, P-dioxanone, 1,5 dioxepan-2-one, 1,4 -oxathialan-2-one, 1,4-dioxide and mixtures. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide where the high molecular weight polyethylene oxide is present in the range of from about 2% by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures to an agricultural site is also disclosed.

Bonsignore, P.V.; Coleman, R.D.

1994-11-01T23:59:59.000Z

489

Mechanical properties of cables exposed to simultaneous thermal and radiation aging  

SciTech Connect

Sandia National Laboratories is conducting long-term aging research on representative samples of nuclear power plant Class 1E cables. The objectives of this program are to determine the suitability of these cables for extended life (beyond the 40-year design basis) and to assess various cable condition monitoring (CM) techniques for predicting remaining cable life. This paper provides the results of mechanical measurements that were performed on cable specimens cross-linked polyethylene neoprene jackets: chlorinated polyethylene jackets, fiberglass braid jackets, and chlorosulfonated polyethylene jackets aged at relatively mild, simultaneous thermal and radiation exposure conditions for periods of up to nine months. After aging, some of the aged samples, as well as some unaged samples, were exposed to accident gamma radiation at ambient temperature. The mechanical measurements discussed in this paper include tensile strength, ultimate elongation, and compressive modulus. 10 refs., 22 figs., 2 tabs.

Jacobus, M.J. (Sandia National Labs., Albuquerque, NM (USA)); Fuehrer, G.F. (Science and Engineering Associates, Inc., Albuquerque, NM (USA))

1990-01-01T23:59:59.000Z

490

Special concrete shield selection using the analytic hierarchy process  

SciTech Connect

Special types of concrete radiation shields that depend on locally available materials and have improved properties for both neutron and gamma-ray attenuation were developed by using plastic materials and heavy ores. The analytic hierarchy process (AHP) is implemented to evaluate these types for selecting the best biological radiation shield for nuclear reactors. Factors affecting the selection decision are degree of protection against neutrons, degree of protection against gamma rays, suitability of the concrete as building material, and economic considerations. The seven concrete alternatives are barite-polyethylene concrete, barite-polyvinyl chloride (PVC) concrete, barite-portland cement concrete, pyrite-polyethylene concrete, pyrite-PVC concrete, pyrite-portland cement concrete, and ordinary concrete. The AHP analysis shows the superiority of pyrite-polyethylene concrete over the others.

Abulfaraj, W.H. (King Abdulaziz Univ., Jeddah (Saudi Arabia). Nuclear Engineering Dept.)

1994-08-01T23:59:59.000Z

491

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene and polyethylene glycols, propylene and polypropylene glycols, P-dioxanone, 1,5 dioxepan-2-one, 1,4 -oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide wherein the high molecular weight polyethylene oxide is present in the range of from about 2% by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures thereof to an agricultural site is also disclosed.

Bonsignore, Patrick V. (Joliet, IL); Coleman, Robert D. (Wheaton, IL)

1994-01-01T23:59:59.000Z

492

CX-004733: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3: Categorical Exclusion Determination 3: Categorical Exclusion Determination CX-004733: Categorical Exclusion Determination High-Density Nanopore Array for Selective Biomolecular Transport Date: 11/03/2010 Location(s): Illinois Office(s): Sandia Site Office Sandia National Laboratories/California proposes to establish a university partnership Laboratory Directed Research and Development to support a fellowship student whose project, titled "High-Density Nanopore Array for Selective Biomolecular Transport," develop an understanding of the nanoscale phenomena of transporting molecules with electric fields through nanopores which act like selective gates. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-004733.pdf More Documents & Publications CX-004734: Categorical Exclusion Determination CX-004736: Categorical Exclusion Determination

493

Color Superconductivity in Asymmetric Matter  

E-Print Network (OSTI)

The influence of different chemical potential for different flavors on color superconductivity is analyzed. It is found that there is a first order transition as the asymmetry grows. This transition proceeds through the formation of bubbles of low density, flavor asymmetric normal phase inside a high density, superconducting phase with a gap {\\it larger} than the one found in the symmetric case. For small fixed asymmetries the system is normal at low densities and superconducting only above some critical density. For larger asymmetries the two massless quarks system stays in the mixed state for arbitrarily high densities.

Paulo F. Bedaque

1999-10-06T23:59:59.000Z

494

Molecular Hydrogen Formation on Ice Under Interstellar Conditions  

E-Print Network (OSTI)

The results of experiments on the formation of molecular hydrogen on low density and high density amorphous ice surfaces are analyzed using a rate equation model. The activation energy barriers for the relevant diffusion and desorption processes are obtained. The more porous morphology of the low density ice gives rise to a broader spectrum of energy barriers compared to the high density ice. Inserting these parameters into the rate equation model under steady state conditions we evaluate the production rate of molecular hydrogen on ice-coated interstellar dust grains.

Hagai B. Perets; Ofer Biham; Giulio Manico; Valerio Pirronello; Joe Roser; Sol Swords; Gianfranco Vidali

2004-12-09T23:59:59.000Z

495

Characterization of thermal performance of fibrous insulations subject to a humid environment  

SciTech Connect

The insulating capability of a typical Fiberglas insulation slab exposed to different types of environment on each side of the slab was evaluated, based on theory that takes into account heat conduction, natural convection, phase changes, and gas infiltration. The results are analyzed and combined with recent theoretical work to find useful heat transfer characteristics for each of the material studied. These included RA-24 insulation, high-density wool; R-11 Batt insulation, low-density wool; RA-22 insulation, low-density board; and roof deck insulation, high-density board. 5 refs.

Vafai, K. (Ohio State Univ., Columbus (United States))

1993-03-01T23:59:59.000Z

496

STRUCTURE FORMATION IN THE SYMMETRON MODEL  

SciTech Connect

Scalar fields, strongly coupled to matter, can be present in nature and still be invisible to local experiments if they are subject to a screening mechanism. The symmetron is one such mechanism that relies on restoration of a spontaneously broken symmetry in regions of high density to shield the scalar fifth force. We have investigated structure formation in the symmetron model by using N-body simulations and find observable signatures in both the linear and nonlinear matter power spectrum and on the halo mass function. The mechanism for suppressing the scalar fifth force in high-density regions is also found to work very well.

Davis, Anne-Christine; Li Baojiu [DAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom); Mota, David F.; Winther, Hans A. [Institute of Theoretical Astrophysics, University of Oslo, 0315 Oslo (Norway)

2012-03-20T23:59:59.000Z

497

Process for recovering chaotropic anions from an aqueous solution also containing other ions  

DOE Patents (OSTI)

A solid/liquid process for the separation and recovery of chaotropic anions from an aqueous solution is disclosed. The solid support comprises separation particles having surface-bonded poly(ethylene glycol) groups, whereas the aqueous solution from which the chaotropic anions are separated contains a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved salt (lyotrope). A solid/liquid phase admixture of separation particles containing bound chaotropic anions in such an aqueous solution is also contemplated, as is a chromatography apparatus containing that solid/liquid phase admixture. 19 figs.

Rogers, R.; Horwitz, E.P.; Bond, A.H.

1999-03-30T23:59:59.000Z

498

Process for recovering chaotropic anions from an aqueous solution also containing other ions  

DOE Patents (OSTI)

A solid/liquid process for the separation and recovery of chaotropic anions from an aqueous solution is disclosed. The solid support comprises separation particles having surface-bonded poly(ethylene glycol) groups, whereas the aqueous solution from which the chaotropic anions are separated contains a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved salt (lyotrope). A solid/liquid phase admixture of separation particles containing bound chaotropic anions in such an aqueous solution is also contemplated, as is a chromatography apparatus containing that solid/liquid phase admixture.

Rogers, Robin (DeKalb, IL); Horwitz, E. Philip (Naperville, IL); Bond, Andrew H. (Tallahassee, FL)

1999-01-01T23:59:59.000Z

499

Using a Borated Panel to Form a Dual Neutron-Gamma Detector  

SciTech Connect

A borated polyethylene plane placed between a neutron source and a gamma spectrometer is used to form a dual neutron-gamma detection system. The polyethylene thermalizes the source neutrons so that they are captured by {sup 10}B to produce a flux of 478 keV gamma-rays that radiate from the plane. This results in a buildup of count rate in the detector over that from a disk of the same diameter as the detector crystal (same thickness as the panel). Radiation portal systems are a potential application of this technique.

Scott Wilde; Raymond Keegan

2008-06-20T23:59:59.000Z

500

pH-sensitive methacrylic copolymer gels and the production thereof  

DOE Patents (OSTI)

The present invention provides novel gel forming methacrylic blocking copolymers that exhibit cationic pH-sensitive behavior as well as good water solubility. The copolymers are constructed by polymerization of a tertiary amine methacrylate with either a (poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) polymer, such as the commercially available Pluronic.RTM. polymers, or a poly(ethylene glycol)methyl ether polymer. The polymers may be used for drug and gene delivery, protein separation, as structural supplements, and more.

Mallapragada, Surya K. (Ames, IA); Anderson, Brian C. (Lake Bluff, IA)

2007-05-15T23:59:59.000Z