National Library of Energy BETA

Sample records for lead acid model

  1. Ris-R-1515(EN) Lifetime Modelling of Lead Acid Batteries

    E-Print Network [OSTI]

    Risø-R-1515(EN) Lifetime Modelling of Lead Acid Batteries Henrik Bindner, Tom Cronin, Per Lundsager Baring-Gould Title: Lifetime Modelling of Lead Acid Batteries Department: VEA, VES Risø-R-1515 April 2005 storage in batteries are an important part of many renewable based energy systems. Not only do batteries

  2. ENERGY MODELING OF A LEAD-ACID BATTERY WITHIN HYBRID WIND / PHOTOVOLTAIC SYSTEMS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ENERGY MODELING OF A LEAD-ACID BATTERY WITHIN HYBRID WIND / PHOTOVOLTAIC SYSTEMS O. GERGAUD, G Abstract: Within the scope of full-scale energy modeling of a hybrid wind / photovoltaic system coupled-power hybrid wind/photovoltaic production system (20 ASE modules for a 2- kW polycrystalline silicon peak

  3. A two-dimensional mathematical model of a porous lead dioxide electrode in a lead-acid cell 

    E-Print Network [OSTI]

    Dimpault-Darcy, Eric Christophe

    1987-01-01

    to the pore structure. Hence, for this volume element, the potentials in the solid, 4, , and in the electrolyte, Cs, represent averaged quantities. These variables coincide spatially because the electrode is treated as a superposition of two continua... from Fig. 7-9, the greatest porosity occurs at the center line. At TABLE V. Parameter values held fixed Parameter (reference number) Symbol Value Acid Electrolyte conductivity at 25 'C (2) Acid diffusion coefficient at 25 'C (16) Applied current...

  4. A Mathematical Model of the Lead-Acid Battery to Address the Effect of Corrosion

    E-Print Network [OSTI]

    Subramanian, Venkat

    plate. Three different modeling approaches are used to incorporate the effect of corrosion in the first-principles the requirements for traditional automobile industry to modern plug-in hybrid electric vehicles. Though other the electrons generated at the positive active materials need to over- come additional resistances to flow

  5. Primer on lead-acid storage batteries

    SciTech Connect (OSTI)

    1995-09-01

    This handbook was developed to help DOE facility contractors prevent accidents caused during operation and maintenance of lead-acid storage batteries. Major types of lead-acid storage batteries are discussed as well as their operation, application, selection, maintenance, and disposal (storage, transportation, as well). Safety hazards and precautions are discussed in the section on battery maintenance. References to industry standards are included for selection, maintenance, and disposal.

  6. Lightweight, durable lead-acid batteries

    DOE Patents [OSTI]

    Lara-Curzio, Edgar (Lenoir City, TN); An, Ke (Knoxville, TX); Kiggans, Jr., James O. (Oak Ridge, TN); Dudney, Nancy J. (Knoxville, TN); Contescu, Cristian I. (Knoxville, TN); Baker, Frederick S. (Oak Ridge, TN); Armstrong, Beth L. (Clinton, TN)

    2011-09-13

    A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).

  7. Lightweight, durable lead-acid batteries

    DOE Patents [OSTI]

    Lara-Curzio, Edgar; An, Ke; Kiggans, Jr., James O; Dudney, Nancy J; Contescu, Cristian I; Baker, Frederick S; Armstrong, Beth L

    2013-05-21

    A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).

  8. Closure device for lead-acid batteries

    DOE Patents [OSTI]

    Ledjeff, Konstantin (Schwalbach, DE)

    1983-01-01

    A closure device for lead-acid batteries includes a filter of granulated activated carbon treated to be hydrophobic combined with means for preventing explosion of emitted hydrogen and oxygen gas. The explosion prevention means includes a vertical open-end tube within the closure housing for maintaining a liquid level above side wall openings in an adjacent closed end tube. Gases vent from the battery through a nozzle directed inside the closed end tube against an impingement surface to remove acid droplets. The gases then flow through the side wall openings and the liquid level to quench any possible ignition prior to entering the activated carbon filter. A wick in the activated carbon filter conducts condensed liquid back to the closure housing to replenish the liquid level limited by the open-end tube.

  9. Anaerobic microbial dissolution of lead and production of organic acids

    DOE Patents [OSTI]

    Francis, A.J.; Dodge, C.; Chendrayan, K.; Quinby, H.L.

    1987-04-16

    The present invention related to an anaerobic bacterial culture of Clostridium sp. ATCC No. 53464 which solubilizes lead oxide under anaerobic conditions in coal and industrial wastes and therefore presents a method of removing lead from such wastes before they are dumped into the environment. The rat of lead dissolution during logarithmic growth of the bacteria in 40 ml medium containing 3.32 ..mu..moles of lead as lead oxide was 0.042 ..mu..moles m1/sup /-/1/ hr/sup /-/1/. Dissolution of lead oxide by the bacterial isolate is due to the production of metabolites and acidity in the culture medium. The major metabolites are acetic, butyric and lactic acid. The major metabolites are acetic, butyric and lactic acid. Clostridium sp. ATCC No. 53464 can be used in the recovery of the strategic metals from ores and wastes and also for the production of lactic acid for commercial purposes. The process yields large quantities of lactic acid as well as lead complexed in a stable form with said acids. 4 figs., 3 tabs.

  10. Anaerobic microbial dissolution of lead and production of organic acids

    DOE Patents [OSTI]

    Francis, Arokiasamy J. (Middle Island, NY); Dodge, Cleveland (Wading River, NY); Chendrayan, Krishnachetty (Coimbatore Tamil Nadu, IN); Quinby, Helen L. (Cambridge, MD)

    1988-01-01

    The present invention relates to an anaerobic bacterial culture of Clostridium sp. ATCC No. 53464 which solubilizes lead oxide under anaerobic conditions in coal and industrial wastes and therefore presents a method of removing lead from such wastes before they are dumped into the environment. The rate of lead dissolution during logarithmic growth of the bacteria in 40 ml medium containing 3.32 .mu.moles of lead as lead oxide was 0.042 .mu.moles ml.sup.-1 hr.sup.-1. Dissolution of lead oxide by the bacterial isolate is due to the production of metabolites and acidity in the culture medium. The major metabolites are acetic, butyric and lactic acid. Clostridium sp. ATCC No. 53464 can be used in the recovery of strategic metals from ores and wastes and also for the production of lactic acid for commercial purposes. The process yields large quantities of lactic acid as well as lead complexed in a stable form with said acids.

  11. System for agitating the acid in a lead-acid battery

    DOE Patents [OSTI]

    Weintraub, Alvin (Schenectady, NY); MacCormack, Robert S. (Glenville, NY)

    1987-01-01

    A system and method for agitating the acid in a large lead-sulfuric acid storage battery of the calcium type. An air-lift is utilized to provide the agitation. The air fed to the air-lift is humidified prior to being delivered to the air-lift.

  12. SUBMARINE LEAD-ACID BATTERY PERFORMANCE To appear in the (refereed) proceedings of the Mathematics-in-Industry

    E-Print Network [OSTI]

    McGuinness, Mark

    SUBMARINE LEAD-ACID BATTERY PERFORMANCE To appear in the (refereed) proceedings of the Mathematics and Basil Benjamin2 The lead-acid batteries used to power conventional submarines while they are submerged to calculate state of charge and to predict the per- formance of these batteries. Three models are considered

  13. Short communication Real-time estimation of lead-acid battery parameters: A dynamic

    E-Print Network [OSTI]

    Ray, Asok

    squares) have been applied to lead-acid [1] and lithium-ion [2] batteries. This paper proposes a dynamicShort communication Real-time estimation of lead-acid battery parameters: A dynamic data of State of charge (SOC) and State of health (SOH) in lead-acid batteries. Algorithm development based

  14. Effect of Sn and Ca doping on the corrosion of Pb anodes in lead acid batteries

    E-Print Network [OSTI]

    Popov, Branko N.

    Effect of Sn and Ca doping on the corrosion of Pb anodes in lead acid batteries Dragan Slavkova corrosion rate as compared to pure lead anodes. In the present investigation, the dissolution of Pb reserved. Keywords: Corrosion; Pb anodes; Lead acid batteries; Doping tin; Calcium 1. Introduction

  15. Anaerobic microbial dissolution of lead and production of organic acids

    DOE Patents [OSTI]

    Francis, A.J.; Dodge, C.; Chendrayan, K.

    1986-02-28

    The present invention relates to a method of solubilizing lead, in the form of lead oxide, found in industrial wastes, before these wastes are dumped into the environment. The lead is solubilized by dissolving the lead oxide in the wastes through contact with an anaerobic bacterial culture containing the bacterium ATCC No. 53464. The solubilized lead can then be removed from the wastes by chemical separation. It could also be removed by extending the contact period with the bacterial culture. As the culture grows, the solubilized lead is removed from the wastes by bioaccumulation by the microorganism or by immobilization by a polymer-like material produced by the microorganism. At this point, the lead is then removed from the wastes when the waste material is separated from the bacterial culture. If desired, the bacterial culture could be digested at this point to yield relatively pure lead for further industrial use.

  16. Effect of Sn and Ca doping on the corrosion of Pb anodes in lead acid batteries

    E-Print Network [OSTI]

    Popov, Branko N.

    or lead calcium binaries. The use of pure lead gives rise to a strong oxide passive layer formation oxide film is prevented in antimony based lead grids due to the solubility of different antimony sulfateEffect of Sn and Ca doping on the corrosion of Pb anodes in lead acid batteries Dragan Slavkova

  17. Quadratic voltage profiles in lead acid cells during slow, steady processes 

    E-Print Network [OSTI]

    Haaser, Robert Anthony

    1999-01-01

    It is standard lore that the voltage profile varies linearly in space within the electrolyte of a lead acid cell under slow, steady discharge. However, this hypothesis has never been put to the test. A recent theory predicts ...

  18. AVTA: 2010 Honda Civic HEV with Experimental Ultra Lead Acid Battery Testing Results

    Broader source: Energy.gov [DOE]

    The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research and development. The following reports describe results of testing done on a 2010 Civic hybrid electric vehicle with an advanced experimental ultra-lead acid battery, an experimental vehicle not for sale. The baseline performance testing provides a point of comparison for the other test results. Taken together, these reports give an overall view of how this vehicle functions under extensive testing. This research was conducted by Idaho National Laboratory.

  19. Modeling of Acid Fracturing in Carbonate Reservoirs 

    E-Print Network [OSTI]

    Al Jawad, Murtada s

    2014-06-05

    The acid fracturing process is a thermal, hydraulic, mechanical, and geochemical (THMG)-coupled phenomena in which the behavior of these variables are interrelated. To model the flow behavior of an acid into a fracture, mass and momentum balance...

  20. Humic acid preparation, properties and interactions with metals lead and cadmium

    E-Print Network [OSTI]

    Coles, Cynthia

    Humic acid preparation, properties and interactions with metals lead and cadmium Cynthia A. Coles a of HAs Engineering Geology 85 (2006) 26­32 www.elsevier.com/locate/enggeo Corresponding author. Tel.: +1 in the early stages of decomposition (Yong and Mourato, 1988), is derived from lignin in woody plants (Rashid

  1. Recycle Batteries CSM recycles a variety of battery types including automotive, sealed lead acid, nickel

    E-Print Network [OSTI]

    Recycle Batteries CSM recycles a variety of battery types including automotive, sealed lead acid, and alkaline batteries. All batteries need to be sorted by battery type. Each battery type must be accumulated in a clearly labeled receptacle to identify the acceptable battery type. Batteries can be dropped off

  2. Fuzzy Logic-Based State-of-Health Determination of Lead Acid Batteries Pritpal Singh

    E-Print Network [OSTI]

    Singh, Pritpal

    Fuzzy Logic-Based State-of-Health Determination of Lead Acid Batteries Pritpal Singh Villanova) of uninterruptible power supply (UPS) batteries using impedance measurements has been demonstrated by several extracted equivalent circuit parameters to correlate with battery SOH. This is a computationally extensive

  3. The Programming Model and Practice Technical Lead

    E-Print Network [OSTI]

    Cortes, Corinna

    -Grbovic Software Engineer Tutorials, June 19th 2009 #12;Yet another MapReduce tutorial? Some tutorials you might for popular queries, e.g. Google Trend Processing of satellite imagery data Language model processing in a new GMail cluster Similar servers running GMail elsware not affected Same version of the software

  4. Lead

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

    topic Lead 8:00 AM 8:15 AM Welcome and Webinar Rules Maloy 8:15 AM 8:30 AM NE Materials Introduction Lesica 8:30 AM 9:00 AM Advanced Reactor Concepts Sham 9:00 AM 9:30 AM SMR...

  5. Research, development and demonstration of lead-acid batteries for electric vehicle propulsion. Annual report, 1979

    SciTech Connect (OSTI)

    Not Available

    1980-06-01

    This report describes work performed from October 1, 1978 to September 30, 1979. The approach for development of both the Improved State-of-the-Art (ISOA) and Advanced lead-acid batteries is three pronged. This approach concentrates on simultaneous optimization of battery design, materials, and manufacturing processing. The 1979 fiscal year saw the achievement of significant progress in the program. Some of the major accomplishments of the year are outlined. 33 figures, 13 tables. (RWR)

  6. Numerical Model for Conduction-Cooled Current Lead Heat Loads

    SciTech Connect (OSTI)

    White, M.J.; Wang, X.L.; Brueck, H.D.; /DESY

    2011-06-10

    Current leads are utilized to deliver electrical power from a room temperature junction mounted on the vacuum vessel to a superconducting magnet located within the vacuum space of a cryostat. There are many types of current leads used at laboratories throughout the world; however, conduction-cooled current leads are often chosen for their simplicity and reliability. Conduction-cooled leads have the advantage of using common materials, have no superconducting/normal state transition, and have no boil-off vapor to collect. This paper presents a numerical model for conduction-cooled current lead heat loads. This model takes into account varying material and fluid thermal properties, varying thicknesses along the length of the lead, heat transfer in the circumferential and longitudinal directions, electrical power dissipation, and the effect of thermal intercepts. The model is validated by comparing the numerical model results to ideal cases where analytical equations are valid. In addition, the XFEL (X-Ray Free Electron Laser) prototype current leads are modeled and compared to the experimental results from testing at DESY's XFEL Magnet Test Stand (XMTS) and Cryomodule Test Bench (CMTB).

  7. Synthesis of uniform nano-structured lead oxide by sonochemical method and its application as cathode and anode of lead-acid batteries

    SciTech Connect (OSTI)

    Karami, Hassan [Department of Chemistry, Payame Noor University, Abhar (Iran, Islamic Republic of)], E-mail: karami_h@yahoo.com; Karimi, Mohammad Ali; Haghdar, Saeed [Department of Chemistry, Payame Noor University, Ardakan (Iran, Islamic Republic of)

    2008-11-03

    This paper discusses the results of a research aimed at investigating the synthesis of nano-structured lead oxide through reaction of lead nitrate solution and sodium carbonate solution by the sonochemical method. At the first, lead carbonate was obtained in a synthesized solution and then, after filtration, it was calcinated at the temperature of 320 deg. C so that nano-structured lead oxide can be produced. The effects of different parameters on particle size and morphology of final lead oxide powder were optimized by a 'one at a time' method. The prepared lead oxide powder was characterized by scanning electron microscopy (SEM), transmission electron spectroscopy (TEM) and X-ray diffraction (XRD). Under optimum conditions, uniformed and homogeneous nano-structured lead oxide powder with more spongy morphology and particle size of 20-40 nm was obtained. The synthesized lead oxide, as anode and cathode of lead-acid batteries, showed an excellent discharge capacity (140 mA h/g)

  8. Lead Sorption onto Ferrihydrite. 2. Surface Complexation Modeling

    E-Print Network [OSTI]

    Sparks, Donald L.

    A R A S T R I V E D I , N O E L C . S C R I V N E R , A N D D O N A L D L . S P A R K S DepartmentLead Sorption onto Ferrihydrite. 2. Surface Complexation Modeling J A M E S A . D Y E R , * , , P

  9. Development of Fuzzy Logic-Based Lead Acid Battery Management Techniques with Applications to 42V Systems

    E-Print Network [OSTI]

    Singh, Pritpal

    on changing battery conditions. Finally, the fuzzy logic methodology lends itself well to rapid system designDevelopment of Fuzzy Logic-Based Lead Acid Battery Management Techniques with Applications to 42V volt systems is being phased into commercial vehicles, the battery technology is being developed

  10. Epidemiological-environemental study of lead acid battery workers. III. Chronic effects of sulfuric acid on the respiratory system and teeth

    SciTech Connect (OSTI)

    Gamble, J.; Jones, W.; Hancock, J.; Meckstroth, R.L.

    1984-10-01

    The effects of long-term exposure to sulfuric acid mist on the teeth and respiratory system were studied in 248 workers in five plants manufacturing lead acid batteries. The prevalence of cough, phlegm, dyspnea, and wheezing as determined by questionnaire were not associated with estimates of cumulative acid exposure. There was only one case of irregular opacities seen on the chest radiographs. There was no statistically significant association of reduced FEV/sub 1/ peak flow, FEF/sub 50/, and FEF/sub 75/ with acid exposure although the higher exposed group had lower mean values. FVC in the high exposure group showed a statistically significant reductioon compared to the low exposure group but there was no significant association when exposure was analyzed as a continuous variable. The ratio of observed to expected prevalence of teeth etching and erosion was about four times greater in the high acid-exposure group. The earliest case of etching occured after 4 months exposure to an estimated average exposure of 0.23 mg/m/sup 3/ sulfuric acid.

  11. Integrated 3D Acid Fracturing Model for Carbonate Reservoir Stimulation 

    E-Print Network [OSTI]

    Wu, Xi

    2014-06-23

    and illustrates the application of the approach with examples. The results from this study show that the new model can successfully design and optimize acid fracturing treatments....

  12. Changes in Model Lung Surfactant Monolayers Induced by Palmitic Acid

    E-Print Network [OSTI]

    Zasadzinski, Joseph A.

    Changes in Model Lung Surfactant Monolayers Induced by Palmitic Acid Frank Bringezu, Junqi Ding of model lung surfactant lipid monolayers. Adding increasing fractions of palmitic acid (PA) to a 77/23 (wt to the rational design of replacement lung surfactants for the treatment of respiratory distress syndrome

  13. 3-D Structural Modeling of Humic Acids through Experimental

    E-Print Network [OSTI]

    Goddard III, William A.

    for a "typical" soilHA.SchlutenandSchnitzer(11)havecombinedelemental analysis, 13C NMR, pyrolysis mass Structure Elucidation and Atomistic Simulations. 1. Chelsea Soil Humic Acid M A M A D O U S . D I A L L O to the CASE program SIGNATURE to generate all 3-D structural models for Chelsea soil humic acid (HA

  14. A Ferroelastic Switching Model for Lead Zirconate-Titanate (PZT)

    E-Print Network [OSTI]

    or presence of thermal relaxation are respectively determined by minimizing the Gibbs energy or balancing the Gibbs and rel- ative thermal energies using Boltzmann principles. Macroscopic models suitable, theory of thermally activated processes, and stochastic homogenization techniques to characterize

  15. A Novel Model for Fracture Acidizing with Important Thermal Effects 

    E-Print Network [OSTI]

    Lyons, John

    2013-12-05

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1.3 LB Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3. MODELING REACTIVE TRANSPORT . . . . . . . . . . . . . . . . . . . . . 14 3.1 LB Method: Fluid Velocity Update . . . . . . . . . . . . . . . . . . . . . 14 3.2 LB... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 6.2 Diffusion and Reaction in a Closed Box . . . . . . . . . . . . . . . . . . 37 6.3 Advection, Diffusion and Reaction in an Open Channel . . . . . . . . . . 38 7. THERMAL FRACTURE ACIDIZING MODEL . . . . . . . . . . . . . . . . . 40 7.1 Velocity...

  16. Research, development, and demonstration of lead-acid batteries for electric vehicle propulsion. Annual report for 1980

    SciTech Connect (OSTI)

    Not Available

    1981-03-01

    Work performed during Oct. 1, 1979 to Sept. 30, 1980 for the development of lead-acid batteries for electric vehicle propulsion is described. During this report period many of the results frpm Globe Battery's design, materials and process development programs became evident in the achievement of the ISOA (Improved State of Art) specific energy, specific power, and energy efficiency goals while testing in progress also indicates that the cycle life goal can be met. These programs led to the establishment of a working pilot assembly line which produced the first twelve volt ISOA modules. Five of these modules were delivered to the National Battery Test Laboratory during the year for capacity, power and life testing, and assembly is in progress of three full battery systems for installation in vehicles. In the battery subsystem area, design of the acid circulation system for a ninety-six volt ISOA battery pack was completed and assembly of the first such system was initiated. Charger development has been slowed by problems encountered with reliability of some circuits but a prototype unit is being prepared which will meet the charging requirements of our ninety-six volt pack. This charger will be available during the 1981 fiscal year.

  17. Research, development, and demonstration of lead-acid batteries for electric-vehicle propulsion. Annual report, 1980

    SciTech Connect (OSTI)

    Not Available

    1981-03-01

    The first development effort in improving lead-acid batteries fore electric vehicles was the improvement of electric vehicle batteries using flat pasted positive plates and the second was for a tubular long life positive plate. The investigation of 32 component variables based on a flat pasted positive plate configuration is described. The experiment tested 96 - six volt batteries for characterization at 0, 25, and 40/sup 0/C and for cycle life capability at the 3 hour discharge rate with a one cycle, to 80% DOD, per day regime. Four positive paste formulations were selected. Two commercially available microporous separators were used in conjunction with a layer of 0.076 mm thick glass mat. Two concentrations of battery grade sulfuric acid were included in the test to determine if an increase in concentration would improve the battery capacity sufficient to offset the added weight of the more concentrated solution. Two construction variations, 23 plate elements with outside negative plates and 23 plate elements with outside positive plates, were included. The second development effort was an experiment designed to study the relationship of 32 component variables based on a tubular positive plate configuration. 96-six volt batteries were tested at various discharge rates at 0, 25, and 40/sup 0/C along with cycle life testing at 80% DOD of the 3 hour rate. 75 batteries remain on cycle life testing with 17 batteries having in excess of 365 life cycles. Preliminary conclusions indicate: the tubular positive plate is far more capable of withstanding deep cycles than is the flat pasted plate; as presently designed 40 Whr/kg can not be achieved, since 37.7 Whr/kg was the best tubular data obtained; electrolyte circulation is impaired due to the tight element fit in the container; and a redesign is required to reduce the battery weight which will improve the Whr/kg value. This redesign is complete and new molds have been ordered.

  18. Proceedings of the 2007 Aging Aircraft Conference Cost Model for Assessing the Transition to Lead-Free Electronics

    E-Print Network [OSTI]

    Sandborn, Peter

    Proceedings of the 2007 Aging Aircraft Conference Cost Model for Assessing the Transition to Lead the cost ramifications of the transition from tin- lead to lead-free electronic parts. All tin-lead, all lead-free and mixed assembly approaches are considered. The model makes basic assumptions of a fixed

  19. Understanding sensitization behavior of lead selenide photoconductive detectors by charge separation model

    SciTech Connect (OSTI)

    Zhao, Lihua, E-mail: lihua.zhao@ou.edu, E-mail: shi@ou.edu; Qiu, Jijun; Weng, Binbin; Chang, Caleb; Yuan, Zijian; Shi, Zhisheng, E-mail: lihua.zhao@ou.edu, E-mail: shi@ou.edu [School of Electrical and Computer Engineering, University of Oklahoma, Norman, Oklahoma 73019 (United States)

    2014-02-28

    We introduce a charge separation model in this work to explain the mechanism of enhanced photoconductivity of polycrystalline lead salt photoconductors. Our results show that this model could clarify the heuristic fabrication processes of such lead salt detectors that were not well understood and often considered mysterious for nearly a century. The improved lifetime and performance of the device, e.g., responsivity, are attributed to the spatial separation of holes and electrons, hence less possibility of carrier recombination. This model shows that in addition to crystal quality the size of crystallites, the depth of outer conversion layer, and doping concentration could all affect detector performance. The simulation results agree well with experimental results and thus offer a very useful tool for further improvement of lead salt detectors. The model was developed with lead salt family of photoconductors in mind, but may well be applicable to a wider class of semiconducting films.

  20. A comparison of lead-acid and lithium-based battery behavior and capacity fade in off-grid renewable charging applications

    E-Print Network [OSTI]

    Arnold, Craig B.

    September 2013 Keywords: Off-grid renewables Lead-acid Lithium-ion Capacity fade Wind Variable charge a b phosphate) cells charged with wind-based charging protocols. Poor pulse charge acceptance, particularly have electricity away from the grid typically rely on diesel generators, renewable energy systems

  1. CX-EWS: A new process for the electrochemical treatment of the spent lead-acid batteries by obtaining electrolytic lead and elemental sulphur

    SciTech Connect (OSTI)

    Olper, M. [Ecowin S.r.l., Milan (Italy); Morocutti, S. [Engitec Impianti S.p.A., Milan (Italy)

    1995-12-31

    After two years of extensive research a new and innovative modification to the CX-EW process has been exploited. This process, called CX-EWS, avoids completely all the critical aspects of the previous process which affected the cost of the energy, of the chemicals and of the maintenance of the insoluble anodes. All these benefits reflect a saving of about 30% of the operating costs compared to the present traditional production and allow for a total operating costs of less than 6.5 cts/lb. lead (net of raw material cost). With this new technology it is allowed for the first time the treatment in the same plant facilities of both primary lead sulfide concentrate and spent batteries. The paper describes the technical and economical aspect of the new process with a Feasibility study for 150.000 t/y spent battery facility throughput.

  2. Modeling acid-gas generation from boiling chloride brines

    SciTech Connect (OSTI)

    Zhang, Guoxiang; Spycher, Nicolas; Sonnenthal, Eric; Steefel, Carl

    2009-11-16

    This study investigates the generation of HCl and other acid gases from boiling calcium chloride dominated waters at atmospheric pressure, primarily using numerical modeling. The main focus of this investigation relates to the long-term geologic disposal of nuclear waste at Yucca Mountain, Nevada, where pore waters around waste-emplacement tunnels are expected to undergo boiling and evaporative concentration as a result of the heat released by spent nuclear fuel. Processes that are modeled include boiling of highly concentrated solutions, gas transport, and gas condensation accompanied by the dissociation of acid gases, causing low-pH condensate. Simple calculations are first carried out to evaluate condensate pH as a function of HCl gas fugacity and condensed water fraction for a vapor equilibrated with saturated calcium chloride brine at 50-150 C and 1 bar. The distillation of a calcium-chloride-dominated brine is then simulated with a reactive transport model using a brine composition representative of partially evaporated calcium-rich pore waters at Yucca Mountain. Results show a significant increase in boiling temperature from evaporative concentration, as well as low pH in condensates, particularly for dynamic systems where partial condensation takes place, which result in enrichment of HCl in condensates. These results are in qualitative agreement with experimental data from other studies. The combination of reactive transport with multicomponent brine chemistry to study evaporation, boiling, and the potential for acid gas generation at the proposed Yucca Mountain repository is seen as an improvement relative to previously applied simpler batch evaporation models. This approach allows the evaluation of thermal, hydrological, and chemical (THC) processes in a coupled manner, and modeling of settings much more relevant to actual field conditions than the distillation experiment considered. The actual and modeled distillation experiments do not represent expected conditions in an emplacement drift, but nevertheless illustrate the potential for acid-gas generation at moderate temperatures (<150 C).

  3. Modeling Reactive Flows in Porous Media Peter Lichtner (lead PI), Los Alamos National Laboratory

    E-Print Network [OSTI]

    Mills, Richard

    and reactive transport in porous media. Apply it to field-scale studies of Geologic CO2 sequestrationModeling Reactive Flows in Porous Media Peter Lichtner (lead PI), Los Alamos National Laboratory NCCS Users Meeting March 28, 2007 #12;Introduction Companion to SciDAC-II project, "Modeling

  4. Air Dispersion Modeling of Mine Waste in the Southeast Missouri Old Lead Belt

    SciTech Connect (OSTI)

    Abbott, Michael Lehman

    1999-10-01

    Past lead ore processing conducted in the Southeast Missouri Old Lead Belt since the 1700s has left numerous large areas of lead contamination in elevated piles of fine gravel waste called “chat” and dried-out tailings ponds. Wind suspension and atmospheric dispersion are known to transport these materials to the surrounding communities where the lead could pose a human health threat through inhalation or ingestion of the deposited contamination. The purpose of this study was to estimate potential wind suspension rates, perform dispersion modeling of the tailings and chat sources, and determine ground surface deposition rates and potential soil concentrations of lead in the surrounding areas. The results can be used to prioritize soil sampling locations, site air monitors, help identify the source of soil lead contamination, and to help develop remediation plans. Numerous, large complex sources in the region were parameterized into 33 area sources with the aid of digital aerial photos, digitized typographic maps, Geographic Information Systems (GIS) software, and site inspections. An AP-42 particulate emission model was used to estimate lower- and upper-bound hourly emission rates using six years of hourly wind speed data obtained from the St. Louis Airport. The emissions model accounted for wind speed, precipitation, source-specific aggregate size, fraction of vegetation cover, and site-specific lead concentrations. An alternative simplified method to calculate emissions from elevated chat piles was developed. The Fugitive Dust Model (FDM) was then used to calculate long-term average and maximum 24-hour deposition rates of lead over a 200 km2 region. Soil concentrations were estimated from modeled deposition rates, time of deposition (80 y) and an assumed surface (0-5.08 cm) mixing depth. Model performance was evaluated by comparing lower- and upper- bound modeled predictions to both air and soil sampling data obtained at two sites. The predicted-to-observed (P/O) ratios calculated using the geometric mean of the lower- and upper-bound modeled concentrations ranged from a low of 0.84 at 300 m to a high of 1.4 at 1800 m, with an average of 1.1. The P/O ratios tended to increase slightly at distances beyond about 1 km. These P/O ratios demonstrate exceptional model performance for the particular sampling transect (location and direction) investigated.

  5. Introduction Weakly electric fish (Fig.1A) have been a leading model system

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    2501 Introduction Weakly electric fish (Fig.1A) have been a leading model system within sensory, cockroaches and fish, among others (Chiel et al., 2009; Nishikawa et al., 2007; Cowan and Fortune, 2007 fish including the African mormyrids. The mechanics exhibited by mormyrids differs greatly from

  6. Shape coexistence in Lead isotopes in the interacting boson model with Gogny energy density functional

    E-Print Network [OSTI]

    K. Nomura; R. Rodriguez-Guzman; L. M. Robledo; N. Shimizu

    2012-08-23

    We investigate the emergence and evolution of shape coexistence in the neutron-deficient Lead isotopes within the interacting boson model (IBM) plus configuration mixing with microscopic input based on the Gogny energy density functional (EDF). The microscopic potential energy surface obtained from the constrained self-consistent Hartree-Fock-Bogoliubov method employing the Gogny-D1M EDF is mapped onto the coherent-state expectation value of the configuration-mixing IBM Hamiltonian. In this way, the parameters of the IBM Hamiltonian are fixed for each of the three relevant configurations (spherical, prolate and oblate) associated to the mean field minima. Subsequent diagonalization of the Hamiltonian provides the excitation energy of the low-lying states and transition strengths among them. The model predictions for the $0^{+}$ level energies and evolving shape coexistence in the considered Lead chain are consistent both with experiment and with the indications of the Gogny-EDF energy surfaces.

  7. Degenerate limit thermodynamics beyond leading order for models of dense matter

    E-Print Network [OSTI]

    Constantinou, Constantinos; Prakash, Madappa; Lattimer, James M

    2015-01-01

    Analytical formulas for next-to-leading order temperature corrections to the thermal state variables of interacting nucleons in bulk matter are derived in the degenerate limit. The formalism developed is applicable to a wide class of non-relativistic and relativistic models of hot and dense matter currently used in nuclear physics and astrophysics (supernovae, proto-neutron stars and neutron star mergers) as well as in condensed matter physics. We consider the general case of arbitrary dimensionality of momentum space and an arbitrary degree of relativity (for relativistic mean-field theoretical models). For non-relativistic zero-range interactions, knowledge of the Landau effective mass suffices to compute next-to-leading order effects, but in the case of finite-range interactions, momentum derivatives of the Landau effective mass function up to second order are required. Numerical computations are performed to compare results from our analytical formulas with the exact results for zero- and finite-range pot...

  8. CONCEPTUAL AND NUMERICAL MODELS OF OXYGEN DIFFUSION, SULPHIDE OXIDATION AND ACID MINE DRAINAGE WITHIN

    E-Print Network [OSTI]

    Aubertin, Michel

    CONCEPTUAL AND NUMERICAL MODELS OF OXYGEN DIFFUSION, SULPHIDE OXIDATION AND ACID MINE DRAINAGE The generation and transport of acid mine drainage (AMD) through discretely fractured porous media is simulated. RÉSUMÉ La génération et le transport des produits issus du drainage minier acide (DMA) dans un milieu

  9. Modeling Acid Transport and Non-Uniform Etching in a Stochastic Domain in Acid Fracturing 

    E-Print Network [OSTI]

    Mou, Jianye

    2010-10-12

    Success of acid fracturing depends on uneven etching along the fracture surfaces caused by heterogeneities such as variations in local mineralogy and variations in leakoff behavior. The heterogeneities tend to create channeling characteristics...

  10. How does trench coupling lead to mountain building in the Subandes? A viscoelastoplastic finite element model

    E-Print Network [OSTI]

    Liu, Mian

    How does trench coupling lead to mountain building in the Subandes? A viscoelastoplastic finite cause of the Andean mountain building. The present-day crustal shortening in the Andes is clear from the cyclic trench coupling leads to long-term mountain building, which has been concentrated in the Subandes

  11. A model for matrix acidizing of long horizontal well in carbonate reservoirs 

    E-Print Network [OSTI]

    Mishra, Varun

    2009-06-02

    ..................................... 40 4.4 Acid placement profiles for different values of PV bt ........................................ 40 4.5 Pressure responses during acid injection......................................................... 41 4.6 PV bt versus V i during... simulation using Buijse Model with PV bt-opt =1.5 ........... 41 4.7 Comparison of wormhole distributions from volumetric and Buijse?s models. 42 4.8 Distribution of perforation length along the wellbore...................................... 44 4...

  12. Understanding the function and performance of carbon-enhanced lead-acid batteries : milestone report for the DOE Energy Storage Systems program (FY11 Quarter 2: January through March 2011).

    SciTech Connect (OSTI)

    Shane, R. (East Penn Manufacturing, Lyon Station, PA); Enos, David George; Hund, Thomas D.

    2011-05-01

    This report describes the status of research being performed under CRADA No. SC10/01771.00 (Lead/Carbon Functionality in VRLA Batteries) between Sandia National Laboratories and East Penn Manufacturing, conducted for the U.S. Department of Energy's Energy Storage Systems Program. The Quarter 2 Milestone was completed on time. The milestone entails an ex situ analysis of the four carbons that have been added to the negative active material of valve-regulated lead-acid (VRLA) batteries for the purposes of this study. The four carbons selected for this study were a graphitic carbon, a carbon black, an activated carbon, and acetylene black. The morphology, crystallinity, and impurity contents of each of the four carbons were analyzed; results were consistent with previous data. Cycling on a subset of the received East Penn cells containing different carbons (and a control) has been initiated. Carbon has been explored as an addition to lead-acid battery electrodes in a number of ways. Perhaps the most notable to date has been the hybrid 'Ultrabattery' developed by CSIRO where an asymmetric carbon-based electrochemical capacitor is combined with a lead-acid battery into a single cell, dramatically improving high-rate partial-state-of-charge (HRPSoC) operation. As illustrated below, the 'Ultrabattery' is a hybrid device constructed using a traditional lead-acid battery positive plate (i.e., PbO{sub 2}) and a negative electrode consisting of a carbon electrode in parallel with a lead-acid negative plate. This device exhibits a dramatically improved cycle life over traditional VRLA batteries, as well as increased charge power and charge acceptance. The 'Ultrabattery' has been produced successfully by both The Furukawa Battery Co. and East Penn Manufacturing. An example illustrating the dramatic improvement in cycle life of the Ultrabattery over a conventional VRLA battery is shown.

  13. Understanding the function and performance of carbon-enhanced lead-acid batteries : milestone report for the DOE Energy Storage Systems program (FY11 Quarter 1: October through December 2010).

    SciTech Connect (OSTI)

    Shane, R. (East Penn Manufacturing, Lyon Station, PA); Enos, David George; Hund, Thomas D.

    2011-05-01

    This report describes the status of research being performed under CRADA No. SC10/01771.00 (Lead/Carbon Functionality in VRLA Batteries) between Sandia National Laboratories and East Penn Manufacturing, conducted for the U.S. Department of Energy's Energy Storage Systems Program. The Quarter 1 Milestone was completed on time. The milestone entails conducting a thorough literature review to establish the current level of understanding of the mechanisms through which carbon additions to the negative active material improve valve-regulated lead-acid (VRLA) batteries. Most studies have entailed phenomenological research observing that the carbon additions prevent/reduce sulfation of the negative electrode; however, no understanding is available to provide insight into why certain carbons are successful while others are not. Impurities were implicated in one recent review of the electrochemical behavior of carbon additions. Four carbon samples have been received from East Penn Manufacturing and impurity contents have been analyzed. Carbon has been explored as an addition to lead-acid battery electrodes in a number of ways. Perhaps the most notable to date has been the hybrid 'Ultrabattery' developed by CSIRO where an asymmetric carbon-based electrochemical capacitor is combined with a lead-acid battery into a single cell, dramatically improving high-rate partial-state-of-charge (HRPSoC) operation. As illustrated below, the 'Ultrabattery' is a hybrid device constructed using a traditional lead-acid battery positive plate (i.e., PbO{sub 2}) and a negative electrode consisting of a carbon electrode in parallel with a lead-acid negative plate. This device exhibits a dramatically improved cycle life over traditional VRLA batteries, as well as increased charge power and charge acceptance. The 'Ultrabattery' has been produced successfully by both The Furukawa Battery Co. and East Penn Manufacturing. An example illustrating the dramatic improvement in cycle life of the Ultrabattery over a conventional VRLA battery is shown in the graph.

  14. Modeling acid-gas generation from boiling chloride brines

    E-Print Network [OSTI]

    Zhang, Guoxiang

    2010-01-01

    solutions, Journal of nuclear technology 2008, 164:180– 35.Modeling and Analysis. Nuclear Technology 1993, 104: 418- 2.

  15. Corrosion Test of US Steels in Lead-Bismuth Eutectic (LBE) and Kinetic Modeling of Corrosion in LBE Systems

    E-Print Network [OSTI]

    McDonald, Kirk

    316/316L, D9, ferritic/martensitic steels HT-9 and T- 410 and Russian martensitic steel EP823 were are thin compared to the oxides on ferritic/martensitic steels, which have pronounced double layer1 Corrosion Test of US Steels in Lead-Bismuth Eutectic (LBE) and Kinetic Modeling of Corrosion

  16. Global modeling of cancer gene expression signa-Cancer leads to permanent changes in cell's physiological state and various

    E-Print Network [OSTI]

    Kaski, Samuel

    Global modeling of cancer gene expression signa- tures Cancer leads to permanent changes in cell cancer types. Less is known about the underlying biological processes, or relationships between different cancer types with respect to these changes. While each specific cancer type has a set of unique

  17. Stabilization of Water-in-Oil Emulsions by Naphthenic Acids and Their Salts: Model Compounds, Role of pH, and Soap : Acid Ratio#

    E-Print Network [OSTI]

    Kilpatrick, Peter K.

    Stabilization of Water-in-Oil Emulsions by Naphthenic Acids and Their Salts: Model Compounds, Role cyclic and branched aliphatic carboxylic acids, are interfacially active and adsorb at water­oil in petroleum production is the resulting stabilization of water-in-oil emulsions, which can cause problems

  18. Modeling uranium transport in acidic contaminated groundwater with base addition

    SciTech Connect (OSTI)

    Zhang, Fan [Institute of Tibetan Plateau Research, Chinese Academy of Sciences; Luo, Wensui [ORNL; Parker, Jack C. [University of Tennessee, Knoxville (UTK); Brooks, Scott C [ORNL; Watson, David B [ORNL; Jardine, Philip [University of Tennessee, Knoxville (UTK); Gu, Baohua [ORNL

    2011-01-01

    This study investigates reactive transport modeling in a column of uranium(VI)-contaminated sediments with base additions in the circulating influent. The groundwater and sediment exhibit oxic conditions with low pH, high concentrations of NO{sub 3}{sup -}, SO{sub 4}{sup 2-}, U and various metal cations. Preliminary batch experiments indicate that additions of strong base induce rapid immobilization of U for this material. In the column experiment that is the focus of the present study, effluent groundwater was titrated with NaOH solution in an inflow reservoir before reinjection to gradually increase the solution pH in the column. An equilibrium hydrolysis, precipitation and ion exchange reaction model developed through simulation of the preliminary batch titration experiments predicted faster reduction of aqueous Al than observed in the column experiment. The model was therefore modified to consider reaction kinetics for the precipitation and dissolution processes which are the major mechanism for Al immobilization. The combined kinetic and equilibrium reaction model adequately described variations in pH, aqueous concentrations of metal cations (Al, Ca, Mg, Sr, Mn, Ni, Co), sulfate and U(VI). The experimental and modeling results indicate that U(VI) can be effectively sequestered with controlled base addition due to sorption by slowly precipitated Al with pH-dependent surface charge. The model may prove useful to predict field-scale U(VI) sequestration and remediation effectiveness.

  19. Adsorption of small weak organic acids on goethite: Modeling of mechanisms

    SciTech Connect (OSTI)

    Filius, J.D.; Hiemstra, T.; Riemsdijk, W.H. Van

    1997-11-15

    The adsorption of lactate, oxalate, malonate, phthalate, and citrate has been determined experimentally as a function of concentration, pH, and ionic strength. The data have been described with the CD-MUSIC model of Hiemstra and Van Riemsdijk which allows a distribution of charge of the organic molecule over the surface and the Stern layer. Simultaneously, the concentration, pH, and salt dependency as well as the basic charging behavior of goethite could be described well. On the basis of model calculations, a distinction is made between inner and outer sphere complexation of weak organic acids by goethite. The results indicate that the affinity of the organic acids is dominated by the electrostatic attraction. The intrinsic affinity constants for the exchange reaction of surface water groups and organic acids, expressed per bond, increases with increasing number of reactive groups on the organic molecule. Ion pair formation between noncoordinated carboxylic groups of adsorbed organic acids and cations of the background electrolyte proved to be important for the salt dependency. The knowledge obtained may contribute to the interpretation of the binding of larger organic acids like fulvic and humic acids.

  20. Characterization and CPDM modeling of volatile fatty acid fermentation with cotton gin trash and chicken manrure as substrates 

    E-Print Network [OSTI]

    Han, Joseph

    2013-02-22

    . Maximum product concentrations when using GT and CM at a temperature of 55?C were 22 g of total acid/L with acetic acid constituting 78 % of the total acids. The Continuum Particle Distribution Modeling (CPDM) method is also applied to data collected...

  1. Modeling and centralization of strategic inventory for repairable and long lead-time spare parts

    E-Print Network [OSTI]

    Duncan, Tyeliah Elaine

    2011-01-01

    This thesis develops an optimal inventory model for repairable and long leadtime spare parts for an Engine overhaul business. In addition, it presents a business case for centralization of inventory. Pratt & Whitney purchased ...

  2. Local Dosing in a 3-Mercaptopropionic Acid Chemically-Induced Epileptic Seizure Model with Microdialysis Sampling

    E-Print Network [OSTI]

    Mayer, Andrew Philip

    2010-12-31

    Dosing in a 3-Mercaptopropionic Acid Chemically-Induced Epileptic Seizure Model with Microdialysis Sampling By Andrew Philip Mayer B.A. Franklin and Marshall College Lancaster, PA, 2006 Submitted to the graduate degree program in Chemistry... ________________________________ Bob Dunn ________________________________ Michael Johnson ________________________________ Ivan Osorio Date Defended: November 23, 2010 ii The Dissertation Committee for Andrew Philip Mayer certifies that this is the approved...

  3. The Expression of Gender in Synthetic Actors: Modeling and Motion Control Over Invariant Perceptual Cues Leading to Gender Recognition 

    E-Print Network [OSTI]

    McLaughlin, Timothy David

    1994-01-01

    -1 THE EXPRESSION OF GENDER IN SYNTHETIC ACTORS: MODELING AND MOTION CONTROL OVER INVARIANT PERCEPTUAL CUES LEADING TO GENDER RECOGNITION A Thesis by TIMOTHY DAVID MCLAUGHLIN Submitted to the Office of Graduate Studies of Texas A&M University in partial... Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: 7fa //Ik Louis G. Tassinary (Co-Chair of Committee) Tarek Alameldin (Member) Susan Van Baerle (Co...

  4. Standard operating procedure for the laboratory analysis of lead in paint, bulk dust, and soil by ultrasonic, acid digestion and inductively coupled plasma emission spectrometric measurement

    SciTech Connect (OSTI)

    Grohse, P.M.; Gutknecht, W.F.; Luk, K.K.; Wilson, B.M.; Van Hise, C.C.

    1997-09-01

    The details and performance of a simplified extraction procedure and analysis for three media are provided. Paint, bulk dust, and soil are collected using standard or referenced methods. Up to 0.25 g of paint, bulk dust, or soil weighted out and placed in a 50-mL centrifuge tube. Five mL of 25% (v/v) nitric acid is added and the sample is ultrasonicated for 30 minutes.

  5. Investigating fatty acid biosynthesis within the algal chloroplast using Chlamydomonas reinhardtii as a model

    E-Print Network [OSTI]

    Blatti, Jillian L.

    2012-01-01

    acid biosynthesis in microalgae for sustainable biodiesel. (acid biosynthesis in microalgae for biofuel through protein-acid biosynthesis in microalgae through protein-protein

  6. Improved Multivariate Calibration Models for Corn Stover Feedstock and Dilute-Acid Pretreated Corn Stover

    SciTech Connect (OSTI)

    Wolfrum, E. J.; Sluiter, A. D.

    2009-01-01

    We have studied rapid calibration models to predict the composition of a variety of biomass feedstocks by correlating near-infrared (NIR) spectroscopic data to compositional data produced using traditional wet chemical analysis techniques. The rapid calibration models are developed using multivariate statistical analysis of the spectroscopic and wet chemical data. This work discusses the latest versions of the NIR calibration models for corn stover feedstock and dilute-acid pretreated corn stover. Measures of the calibration precision and uncertainty are presented. No statistically significant differences (p = 0.05) are seen between NIR calibration models built using different mathematical pretreatments. Finally, two common algorithms for building NIR calibration models are compared; no statistically significant differences (p = 0.05) are seen for the major constituents glucan, xylan, and lignin, but the algorithms did produce different predictions for total extractives. A single calibration model combining the corn stover feedstock and dilute-acid pretreated corn stover samples gave less satisfactory predictions than the separate models.

  7. A statistical model approximation for perovskite solid-solutions: a Raman study of lead-zirconate- titanate single crystal

    SciTech Connect (OSTI)

    Frantti, Johannes [Aalto University, Finland; Fujioka, Y [Aalto University, Finland; Puretzky, Alexander A [ORNL; Xie, Y [Simon Fraser University, Canada; Glazer, A [Clarendon Laboratory, Department of Physics, University of Oxford

    2013-01-01

    Lead titanate (PbTiO3) is a classical example of a ferroelectric perovskite oxide illustrating a displacive phase transition accompanied by a softening of a symmetry-breaking mode. The underlying assumption justifying the soft-mode theory is that the crystal is macroscopically sufficiently uniform so that a meaningful free energy function can be formed. In contrast to PbTiO3, experimental studies show that the phase transition behaviour of lead-zirconate-titanate solid solution (PZT) is far more subtle. Most of the studies on the PZT system have been dedicated to ceramic or powder samples, in which case an unambiguous soft-mode study is not possible, as modes with different symmetries appear together. Our Raman scattering study on titanium-rich PZT single crystal shows that the phase transitions in PZT cannot be described by a simple soft-mode theory. In strong contrast to PbTiO3, splitting of transverse E-symmetry modes reveals that there are different locally-ordered regions. The role of crystal defects, random distribution of Ti and Zr at the B- cation site and Pb ions shifted away from their ideal positions, dictates the phase transition mechanism. A statistical model explaining the observed peak splitting and phase transformation to a complex state with spatially varying local order in the vicinity of the morphotropic phase boundary is given.

  8. Single event kinetic modeling of solid acid alkylation of isobutane with butenes over proton-exchanged Y-Zeolites 

    E-Print Network [OSTI]

    Martinis Coll, Jorge Maximiliano

    2006-04-12

    Complex reaction kinetics of the solid acid alkylation of isobutane with butenes over a proton-exchanged Y-zeolite has been modeled at the elementary step level. Starting with a computer algorithm that generated the reaction network based...

  9. Trends in Formic Acid Decomposition on Model Transition Metal Surfaces: A Density Functional Theory Study

    SciTech Connect (OSTI)

    Herron, Jeffrey A.; Scaranto, Jessica; Ferrin, Peter A.; Li, Sha; Mavrikakis, Manos

    2014-12-05

    We present a first-principles, self-consistent periodic density functional theory (PW91-GGA) study of formic acid (HCOOH) decomposition on model (111) and (100) facets of eight fcc metals (Au, Ag, Cu, Pt, Pd, Ni, Ir, and Rh) and (0001) facets of four hcp (Co, Os, Ru, and Re) metals. The calculated binding energies of key formic acid decomposition intermediates including formate (HCOO), carboxyl (COOH), carbon monoxide (CO), water (H2O), carbon dioxide (CO2), hydroxyl (OH), carbon (C), oxygen (O), and hydrogen (H; H2) are presented. Using these energetics, we develop thermochemical potential energy diagrams for both the carboxyl-mediated and the formate-mediated dehydrogenation mechanisms on each surface. We evaluate the relative stability of COOH, HCOO, and other isomeric intermediates (i.e., CO + OH, CO2 + H, CO + O + H) on these surfaces. These results provide insights into formic acid decomposition selectivity (dehydrogenation versus dehydration), and in conjunction with calculated vibrational frequency modes, the results can assist with the experimental search for the elusive carboxyl (COOH) surface intermediate. Results are compared against experimental reports in the literature.

  10. ELLIPSOMETRY OF SURFACE LAYERS ON LEAD AND LITHIUM

    E-Print Network [OSTI]

    Peters, Richard Dudley

    2011-01-01

    Surface Layers on Lead and Lithium By Richard Dudley Peterssulfuric acid and and lithium to water, Acid concentrationsbeen observed in the reaction of lithium with water vapor. i

  11. Dissolution of lead paint in aqueous solutions

    SciTech Connect (OSTI)

    Barnes, G.L.; Davis, A.P.

    1996-07-01

    An analysis of the rate and extent of lead leaching from a lead-based paint was completed. At low-solution pH, dissolution was rapid and approached 80% of the total lead. Residual lead can be estimated based on the predicted solubility of lead carbonate and basic lead carbonate. Release of lead from the paint was slower than that from pure basic lead carbonate due to inhibition by the paint matrix. Although the dissolved concentration of lead in solution at neutral/high pH was low, the paint binder was apparently destroyed at these pH values, releasing colloidal lead pigment particles. The presence of ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA) enhanced both the rate and degree of lead dissolution, while benzoic acid had a minimal effect.

  12. Understanding the function and performance of carbon-enhanced lead-acid batteries : milestone report for the DOE Energy Storage Systems Program (FY11 Quarter 4: July through September 2011).

    SciTech Connect (OSTI)

    Ferreira, Summer Rhodes; Shane, Rodney (East Penn Manufacturing, Lyon Station, PA); Enos, David George

    2011-10-01

    This report describes the status of research being performed under CRADA No. SC10/01771.00 (Lead/Carbon Functionality in VRLA Batteries) between Sandia National Laboratories and East Penn Manufacturing, conducted for the U.S. Department of Energy's Energy Storage Systems Program. The Quarter 4 Milestone was completed on time. The milestone entails the initiation of high rate, partial state of charge (HRPSoC) cycling of the carbon enhanced batteries. The morphology, porosity, and porosity distribution within the plates after 1k and 10k cycles were documented, illustrating the changes which take place in the early life of the carbon containing batteries, and as the battery approaches failure due to hard sulfation for the control battery. Longer term cycling on a subset of the received East Penn cells containing different carbons (and a control) continues, and will progress into FY12. Carbon has been explored as an addition to lead-acid battery electrodes in a number of ways. Perhaps the most notable to date has been the hybrid 'Ultrabattery' developed by CSIRO where an asymmetric carbon-based electrochemical capacitor is combined with a lead-acid battery into a single cell, dramatically improving high-rate partial-state-of-charge (HRPSoC) operation. As illustrated below, the 'Ultrabattery' is a hybrid device constructed using a traditional lead-acid battery positive plate (i.e., PbO2) and a negative electrode consisting of a carbon electrode in parallel with a lead-acid negative plate. This device exhibits a dramatically improved cycle life over traditional VRLA batteries, as well as increased charge power and charge acceptance. The 'Ultrabattery' has been produced successfully by both The Furukawa Battery Co. and East Penn Manufacturing. An example illustrating the dramatic improvement in cycle life of the Ultrabattery over a conventional VRLA battery is shown in a graph. In addition to the aforementioned hybrid device, carbon has also been added directly to traditional VRLA batteries as an admixture in both the positive and negative plates, the latter of which has been found to result in similar improvements to battery performance under high-rate partial-state-of-charge (HRPSoC) operation. It is this latter construction, where carbon is added directly to the negative active material (NAM) that is the specific incarnation being evaluated through this program. Thus, the carbon-modified (or Pb-C) battery (termed the 'Advanced' VRLA battery by East Penn Manufacturing) is a traditional VRLA battery where an additional component has been added to the negative electrode during production of the negative plate. The addition of select carbon materials to the NAM of VRLA batteries has been demonstrated to increase cycle life by an order of magnitude or more under (HRPSoC) operation. Additionally, battery capacity increases on cycling and, in fact, exceeds the performance of the batteries when new.

  13. A 1:1000 scale model of the digital world: Global connectivity can lead to the extinction of local networks

    E-Print Network [OSTI]

    Kleineberg, Kaj-Kolja

    2015-01-01

    The overwhelming success of online social networks, the key actors in the cosmos of the Web 2.0, has reshaped human interactions on a worldwide scale. To understand the fundamental mechanisms which determine the fate of online social networks at the system level, we recently introduced a general ecological theory of the digital world. In this paper, we discuss the impact of heterogeneity in the network intrinsic fitness and present how the general theory can be applied to understand the competition between an international network, like Facebook, and local services. To this end, we construct a 1:1000 scale model of the digital world enclosing the 80 countries with most Internet users. We find that above a certain threshold the level of global connectivity can lead to the extinction of local networks. In addition, we reveal the complex role the tendency of individuals to engage in more active networks plays for the probability of local networks to become extinct and provide insights into the conditions under w...

  14. Modeling of the formation of short-chain acids in propane flames F. Battin-Leclerc , 1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Modeling of the formation of short-chain acids in propane flames F. Battin-Leclerc , 1 , A. Simulations of lean (equivalence ratios from 0.9 to 0.48) laminar premixed flames of propane stabilized in a combustion apparatus which can easily be modeled, a laminar premixed flame of propane at atmospheric pressure

  15. Three-dimensional Modeling of Acid Transport and Etching in a Fracture 

    E-Print Network [OSTI]

    Oeth, Cassandra V

    2013-11-25

    Acid fracture stimulation generates higher well production but requires engineering design for treatment optimization. To quantify the cost and benefit of a particular acid fracture treatment an engineer must predict the resulting fracture’s...

  16. An Improved Model for Sandstone Acidizing and Study of the Effect of Mineralogy and Temperature on Sandstone Acidizing Treatments and Simulation 

    E-Print Network [OSTI]

    Agarwal, Amit Kumar

    2013-01-14

    Sandstone acidizing is a complex operation because the acidizing fluid reacts with a variety of minerals present in the formation that results in a wide range of reaction products. The hydrofluoric acid (HF) reaction rate differs widely from mineral...

  17. Ice formation on nitric acid coated dust particles: Laboratory and modeling studies

    SciTech Connect (OSTI)

    Kulkarni, Gourihar R.; Zhang, Kai; Zhao, Chun; Nandasiri, Manjula I.; Shutthanandan, V.; Liu, Xiaohong; Fast, Jerome D.; Berg, Larry K.

    2015-08-16

    Changes in the ice nucleation characteristics of atmospherically relevant mineral dust particles due to nitric acid coating are not well understood. Further, the atmospheric implications of dust coating on ice-cloud properties under different assumptions of primary ice nucleation mechanisms are unknown. We investigated ice nucleation ability of Arizona test dust, illite, K-feldspar and quartz as a function of temperature (-25 to -30°C) and relative humidity with respect to water (75 to 110%). Particles were size selected at 250 nm and transported (bare or coated) to the ice nucleation chamber to determine the fraction of particles nucleating ice at various temperature and water saturation conditions. All dust nucleated ice at water-subsaturated conditions, but the coated particles showed a reduction in their ice nucleation ability compared to bare particles. However, at water-supersaturated conditions, we observed that bare and coated particles had nearly similar ice nucleation characteristics. X-ray diffraction patterns indicated that structural properties of bare dust particles modified after acid treatment. We found that lattice parameters were slightly different, but crystallite sizes of the coated particles were reduced compared to bare particles. Next, single-column model results show that simulated ice crystal number concentrations mostly depends upon fraction of particles that are coated, primary ice nucleation mechanisms, and the competition between ice nucleation mechanisms to nucleate ice. In general, we observed that coating modify the ice-cloud properties and the picture of ice and mixed-phase cloud evolution is complex when different primary ice nucleation mechanisms are competing for fixed water vapor mass.

  18. Modeling of the formation of short-chain acids in propane flames

    E-Print Network [OSTI]

    Battin-Leclerc, Frédérique; Jaffrezo, J L; Legrand, M

    2009-01-01

    In order to better understand their potential formation in combustion systems, a detailed kinetic mechanism for the formation of short-chain monocarboxylic acids, formic (HCOOH), acetic (CH3COOH), propionic (C2H5COOH) and propenic (C2H3COOH)) acids, has been developed. Simulations of lean (equivalence ratios from 0.9 to 0.48) laminar premixed flames of propane stabilized at atmospheric pressure with nitrogen as diluent have been performed. It was found that amounts up to 25 ppm of acetic acid, 15 ppm of formic acid and 1 ppm of C3 acid can be formed for some positions in the flames. Simulations showed that the more abundant C3 acid formed is propenic acid. A quite acceptable agreement has been obtained with the scarce results from the literature concerning oxygenated compounds, including aldehydes (CH2O, CH3CHO) and acids. A reaction pathways analysis demonstrated that each acid is mainly derived from the aldehyde of similar structure.

  19. ELLIPSOMETRY OF SURFACE LAYERS ON LEAD AND LITHIUM

    E-Print Network [OSTI]

    Peters, Richard Dudley

    2011-01-01

    obtained from corrosion of lead in sulfuric acid. DimensionlC2.430 References L Bode, Lead teries (Wiley-Interscienceof Surface Layers on Lead and Lithium By Richard Dudley

  20. Integration of the predictions of two models with dose measurements in a case study of children exposed to the emissions of a lead smelter

    E-Print Network [OSTI]

    Bonnard, R.

    2010-01-01

    Hubicki L. 1999. Blood lead levels in children: epidemiologyscreening of childhood lead poisoning around industrialyoung children's overall lead exposure in France: Integrated

  1. 1-4244-0665-X/06/$20.00 2006 IEEE 781 2006 Electronics Packaging Technology Conference Development of Life Prediction Model for Lead-free Solder at Chip Resistor

    E-Print Network [OSTI]

    Berlin,Technische Universität

    of Life Prediction Model for Lead-free Solder at Chip Resistor Changwoon Han and Byeongsuk Song-mail : cw_han@keti.re.kr Abstract An accelerated thermal cycling test to assess the reliability of lead-free solders at chip resistor has been conducted. Test results indicate that the life of lead-free solder

  2. A Stochastic Model of Nonenzymatic Nucleic Acid Replication: ``Elongators'' Sequester Replicators

    E-Print Network [OSTI]

    Fernando, Chrisantha

    (polymerase chain reaction) acting on nucleic acid polymers, allowing their self-replication. However), but there is no replication, because templates do not recycle by unzipping (Kovac et al. 2003). Short oligonucleotide

  3. Investigating fatty acid biosynthesis within the algal chloroplast using Chlamydomonas reinhardtii as a model

    E-Print Network [OSTI]

    Blatti, Jillian L.

    2012-01-01

    biomass feedstocks and yields of biomass feedstocks a) Amount of land requiredOil yields of leading biomass feedstocks. (Adapted from the

  4. INCREASED LEAD ABSORPTION AND LEAD POISONING

    E-Print Network [OSTI]

    INCREASED LEAD ABSORPTION AND LEAD POISONING IN YOUNG CHILDREN A STATDIE:"IT BY THE CEJde slnt:t! the Surgeon GenerJi's Statement. "~edicJI Aspects of Childhood Lead POisoning," was issued:ld absorption Jnd lead poisoning. Such JCtivities for children will continue to be necessary until sources

  5. Soluble Lead Flow Battery: Soluble Lead Flow Battery Technology

    SciTech Connect (OSTI)

    2010-09-01

    GRIDS Project: General Atomics is developing a flow battery technology based on chemistry similar to that used in the traditional lead-acid battery found in nearly every car on the road today. Flow batteries store energy in chemicals that are held in tanks outside the battery. When the energy is needed, the chemicals are pumped through the battery. Using the same basic chemistry as a traditional battery but storing its energy outside of the cell allows for the use of very low cost materials. The goal is to develop a system that is far more durable than today’s lead-acid batteries, can be scaled to deliver megawatts of power, and which lowers the cost of energy storage below $100 per kilowatt hour.

  6. Investigating fatty acid biosynthesis within the algal chloroplast using Chlamydomonas reinhardtii as a model

    E-Print Network [OSTI]

    Blatti, Jillian L.

    2012-01-01

    18:1-ACP and FatB TEs siphon a range of saturated acyl-suggesting that the CrTE can siphon a range of acyl-ACPthat the CrTE is able to siphon 16:0- ACPs. Fatty acid

  7. Use of a 3D liver microreactor as an in vitro model for the study of bile acid synthesis and hepatobiliary circulation

    E-Print Network [OSTI]

    Llamas Vidales, Jose Ricardo

    2009-01-01

    The liver regulates a myriad of vital functions including bile acid synthesis, hepatobiliary circulation, cholesterol homeostasis, drug metabolism, etc. This thesis focuses on the use of a 3D in vitro model of liver to ...

  8. Models of the formation of oxide phases in nanostructured materials based on lead chalcogenides subjected to treatment in oxygen and iodine vapors

    SciTech Connect (OSTI)

    Maraeva, E. V., E-mail: jenvmar@mail.ru; Moshnikov, V. A.; Tairov, Yu. M. [St. Petersburg State Electrotechnical University 'LETI' (Russian Federation)] [St. Petersburg State Electrotechnical University 'LETI' (Russian Federation)

    2013-10-15

    Model concepts concerning control over the formation of oxide layers during the course of oxidation are developed on the basis of experimental results of studies of systematic features of the formation of nanostructured layers after diffusion annealing. Data on a variation in the composition of oxide phases as the extent of deviation from stoichiometry is changed in the initial lead chalcogenide are presented. Model concepts related to the possibility of varying the thickness of the coating oxide phases using annealing in an oxygen-containing medium are developed. It is shown that annealing in an iodine atmosphere ensures the effective penetration of oxygen into the grains, which is necessary for an increase in the photoluminescence efficiency.

  9. A placement model for matrix acidizing of vertically extensive, multilayer gas reservoirs 

    E-Print Network [OSTI]

    Nozaki, Manabu

    2008-10-10

    Data fit in experiment 17 (from Shukla, 2002) ................................. 14 Fig. 2.6c Data fit in experiment 22 (from Shukla, 2002) ................................. 15 Fig. 2.6d Data fit in experiment 30 (from Shukla, 2002...) ................................. 15 Fig. 2.6e Data fit in experiment 31 (from Shukla, 2002) ................................. 16 Fig. 3.1 Schematic of a section of a slanted well during acidizing ................ 19 Fig. 3.2 Interface movement in the wellbore...

  10. Displacement of Hexanol by the Hexanoic Acid Overoxidation Product in Alcohol Oxidation on a Model Supported Palladium Nanoparticle Catalyst

    SciTech Connect (OSTI)

    Buchbinder, Avram M. [Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Center for Catalysis and Surface Science; Inst. for Catalysis in Energy Processes; Ray, Natalie A. [Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Center for Catalysis and Surface Science; Lu, Junling [Argonne National Lab. (ANL), Argonne, IL (United States). Energy System Division; Van Duyne, Richard P. [Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Center for Catalysis and Surface Science; Inst. for Catalysis in Energy Processes; Stair, Peter C. [Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Center for Catalysis and Surface Science; Inst. for Catalysis in Energy Processes; Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division; Weitz, Eric [Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Center for Catalysis and Surface Science; Inst. for Catalysis in Energy Processes; Geiger, Franz M. [Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Center for Catalysis and Surface Science; Inst. for Catalysis in Energy Processes

    2011-11-09

    This work characterizes the adsorption, structure, and binding mechanism of oxygenated organic species from cyclohexane solution at the liquid/solid interface of optically flat alumina-supported palladium nanoparticle surfaces prepared by atomic layer deposition (ALD). The surface-specific nonlinear optical vibrational spectroscopy, sum-frequency generation (SFG), was used as a probe for adsorption and interfacial molecular structure. 1-Hexanoic acid is an overoxidation product and possible catalyst poison for the aerobic heterogeneous oxidation of 1-hexanol at the liquid/solid interface of Pd/Al?O? catalysts. Single component and competitive adsorption experiments show that 1-hexanoic acid adsorbs to both ALD-prepared alumina surfaces and alumina surfaces with palladium nanoparticles, that were also prepared by ALD, more strongly than does 1-hexanol. Furthermore, 1-hexanoic acid adsorbs with conformational order on ALD-prepared alumina surfaces, but on surfaces with palladium particles the adsorbates exhibit relative disorder at low surface coverage and become more ordered, on average, at higher surface coverage. Although significant differences in binding constant were not observed between surfaces with and without palladium nanoparticles, the palladium particles play an apparent role in controlling adsorbate structures. The disordered adsorption of 1-hexanoic acid most likely occurs on the alumina support, and probably results from modification of binding sites on the alumina, adjacent to the particles. In addition to providing insight on the possibility of catalyst poisoning by the overoxidation product and characterizing changes in its structure that result in only small adsorption energy changes, this work represents a step toward using surface science techniques that bridge the complexity gap between fundamental studies and realistic catalyst models.

  11. Model reaction for the in situ characterization of the hydrogenating and acid properties of industrial hydrocracking catalysts

    SciTech Connect (OSTI)

    Guisnet, M.; Thomazeau, C.; Lemberton, J.L. [Laboratoire de Catalyse en Chimie Organique, Poitiers (France)] [Laboratoire de Catalyse en Chimie Organique, Poitiers (France); Mignard, S. [Institut Francais du Petrole, Rueil-Malmaison (France)] [Institut Francais du Petrole, Rueil-Malmaison (France)

    1995-01-01

    A kinetic study of o-xylene transformation was carried out on a sulfided NiMo on Y zeolite catalyst during the hydrocracking of a model compound (n-heptane) under the following conditions of the process: high hydrogen pressure (5.7 MPa), presence of nitrogen and sulfur-containing compounds. o-Xylene inhibits n-heptane transformation, which can be explained by a competition for the adsorption on the acid sites between o-xylene and the olefinic intermediates of hydrocracking. The products of o-xylene transformation are the following: p- and m-xylenes (isomerization), toluene and trimethylbenzenes (disproportionation), and saturated C{sub 8} naphthenes (dimethylcyclohexane and trimethylcyclopentanes). It is shown that 1,3- and 1,4-dimethylcyclohexanes (and trimethylcyclopentanes) result from the isomerization of m- and p-xylenes. Therefore, the hydrogenating activity of hydrocracking catalysts can be characterized by the formation of dimethylyclohexanes and trimethylcyclopentanes. Furthermore, the isomerization of xylenes, which occurs through an acid mechanism, can be used for characterizing the acid activity of hydrocracking catalysts. This is not the case for disproportion whose rate depends on hydrogen pressure. The validity of o-xylene transformation for characterizing the acid and hydrogenating activities of bifunctional hydrocracking catalysts was confirmed by the use of a series of catalysts having either the same content of NiMo and different contents of zeolite or the same content of zeolite and different contents of NiMo. While the isomerization activity is strictly proportional to the zeolite content and independent of the NiMo content, and the hydrogenating activity is proportional to the NiMo content and independent of the zeolite content. 27 refs., 17 figs., 3 tabs.

  12. LEAD POISONING PREVENTION INFORMATION

    E-Print Network [OSTI]

    Families AreForever LEAD POISONING PREVENTION INFORMATION FOR PARENTS & PROSPECTIVE-lead levels There is no safe level of lead in the body. Often, symptoms are not obvious, so lead poisoning's medical examination in the U.S. or contact your state or local Childhood Lead Poisoning Prevention Program

  13. Oxidation kinetics of methylphosphonic acid in supercritical water : experimental measurements and model development

    E-Print Network [OSTI]

    Sullivan, Patricia A. (Patricia Ann), 1978-

    2004-01-01

    (cont.) at well-defined operating conditions and to develop. both microscopic and macroscopic models, ranging from regressed global models to an elementary reaction mechanism, to quantify MPA oxidation kinetics in supercritical ...

  14. Conceptual Model of Uranium in the Vadose Zone for Acidic and Alkaline Wastes Discharged at the Hanford Site Central Plateau

    SciTech Connect (OSTI)

    Truex, Michael J.; Szecsody, James E.; Qafoku, Nikolla; Serne, R. Jeffrey

    2014-09-01

    Historically, uranium was disposed in waste solutions of varying waste chemistry at the Hanford Site Central Plateau. The character of how uranium was distributed in the vadose zone during disposal, how it has continued to migrate through the vadose zone, and the magnitude of potential impacts on groundwater are strongly influenced by geochemical reactions in the vadose zone. These geochemical reactions can be significantly influenced by the disposed-waste chemistry near the disposal location. This report provides conceptual models and supporting information to describe uranium fate and transport in the vadose zone for both acidic and alkaline wastes discharged at a substantial number of waste sites in the Hanford Site Central Plateau. The conceptual models include consideration of how co-disposed acidic or alkaline fluids influence uranium mobility in terms of induced dissolution/precipitation reactions and changes in uranium sorption with a focus on the conditions near the disposal site. This information, when combined with the extensive information describing uranium fate and transport at near background pH conditions, enables focused characterization to support effective fate and transport estimates for uranium in the subsurface.

  15. A metabolic model of the mitochondrion and its use in modelling diseases of the tricarboxylic acid cycle.

    E-Print Network [OSTI]

    Smith, Anthony C; Robinson, Alan J

    2011-06-29

    , the next step is to use this model with further development to simulate and understand these conditions. We believe that our model can be used as framework for integrating genomics, proteomics, meta- bolomics and clinical data and so contribute...

  16. Identifying key controls on the behavior of an acidic-U(VI) plume in the Savannah River Site using reactive transport modeling

    E-Print Network [OSTI]

    Hubbard, Susan

    online 1 May 2013 Acidic low-level waste radioactive waste solutions were discharged to three unlined reactive transport modeling Sergio A. Bea a, , Haruko Wainwright a,1 , Nicolas Spycher a,2 , Boris treatments. This paper presents a reactive transport (RT) model and uncertainty quantification (UQ) analyses

  17. Eliminating Lead Poisoning

    E-Print Network [OSTI]

    Eliminating Childhood Lead Poisoning: A Federal Strategy Targeting Lead Paint Hazards President Poisoning: A Federal Strategy Targeting Lead Paint Hazards February 2000 President`s Task Force poisoning can be prevented by identifying whether lead hazards in a home are present and by learning how

  18. Modeling of Plug-in Electric Vehicles Interactions with a Sustainable Community Grid in the Azores

    E-Print Network [OSTI]

    Mendes, Goncalo

    2013-01-01

    Lead-Acid), TS - Thermal storage, ST - Solar thermal, PV -Lead-Acid), TS - Thermal storage. All parameters are

  19. REACTIVE FLOW IN VUGGY CARBONATES: METHODS AND MODELS APPLIED TO MATRIX ACIDIZING OF CARBONATES 

    E-Print Network [OSTI]

    Izgec, Omer

    2010-07-14

    studied: Richardson Petroleum Engineering Building Office 714, Barnes & Noble Bookstore, It?s a Grind Caf?, Coffee Station Caf?, Evans Library, Poor Yorick?s Caf?; places I lived: Mill Creek Condos, Renaissance Park Apartments, University Commons (The...) .....................................................................................................91 Figure 5. 8 Models used in connectivity investigation ....................................................92 Figure 5. 9 Connectivity investigation: change in effective permeability of the domain (keff) as a function of connectivity...

  20. Sandstone Acidizing Using Chelating Agents and their Interaction with Clays 

    E-Print Network [OSTI]

    George, Noble Thekkemelathethil 1987-

    2013-01-09

    in the application of acidizing, coreflood tests were performed on Berea and Bandera sandstone cores. Another disadvantage of mud acid has been the fast spending at clay mineral surfaces leading to depletion of acid strength, migration of fines, and formation...

  1. Solvent dependence of the carbon kinetic isotope effect on the decarboxylation of 4-pyridylacetic acid. A model for enzymatic decarboxylations

    SciTech Connect (OSTI)

    Marlier, J.F.; O'Leary, M.H.

    1986-08-06

    Carbon kinetic isotope effects have been measured for the decarboxylation of 4-pyridylacetic acid in pure water and in water-dioxane mixtures at 25/sup 0/C. The isotope effects are k/sup 12//k/sup 13/ = 1.064 in 75% dioxane, 1.060 in 50% dioxane, 1.056 in 25% dioxane, and 1.057 in pure water. The decrease in kinetic isotope effect parallels a more dramatic 4000-fold decrease in the observed first-order rate constant on going from 75% dioxane to pure water. No solvent isotope effect is observed in 50% water/dioxane, and as expected, the carbon isotope effect is the same in 50% D/sub 2/O/dioxane as in 50% H/sub 2/O/dioxane. The reaction appears to occur in a single step, without appreciable proton movement. The variation in rate is attributed to variations in the degree of transition-state solvation with only very small changes in ground-state effects and in the degree of carbon-carbon bond breaking in the transition state. These results indicate that the magnitudes of isotope effects observed in model reactions in H/sub 2/O are an appropriate model for magnitudes of isotope effects in enzymatic decarboxylations.

  2. Generating Energy Efficiency Project Leads and Allocating Leads...

    Energy Savers [EERE]

    Generating Energy Efficiency Project Leads and Allocating Leads to Contractors Generating Energy Efficiency Project Leads and Allocating Leads to Contractors Better Buildings...

  3. Modeling Proton Jumps in HY Zeolite: Effects of Acid Site Heterogeneity Usha Viswanathan, Justin T. Fermann, Leanna K. Toy, Scott M. Auerbach,*,,

    E-Print Network [OSTI]

    Auerbach, Scott M.

    Modeling Proton Jumps in HY Zeolite: Effects of Acid Site Heterogeneity Usha Viswanathan, Justin T; In Final Form: September 21, 2007 We have computed the total mean rate coefficient for proton transfer in bare H-Y zeolite, for comparison with NMR experiments and previous calculations. We computed proton

  4. Soluble epoxide hydrolase inhibitor trans-4-[4-(3-adamantan-1-yl-ureido)-cyclohexyloxy]-benzoic acid is neuroprotective in rat model of

    E-Print Network [OSTI]

    Hammock, Bruce D.

    , and at 180 min after reperfusion. Neuroprotective effects of t-AUCB were evaluated in primary rat neuronal-AUCB may exert its neuroprotective effects by affecting multiple components of neurovascular unit including]-benzoic acid is neuroprotective in rat model of ischemic stroke Jafar Sadik B. Shaik,1 Muzamil Ahmad,3 Wenjin

  5. Understanding the function and performance of carbon-enhanced lead-acid batteries : milestone report for the DOE energy storage systems program (FY11 Quarter 3: April through June 2011).

    SciTech Connect (OSTI)

    Ferreira, Summer Rhodes; Shane, Rodney (East Penn Manufacturing, Lyon Station, PA); Enos, David George

    2011-09-01

    This report describes the status of research being performed under CRADA No. SC10/01771.00 (Lead/Carbon Functionality in VRLA Batteries) between Sandia National Laboratories and East Penn Manufacturing, conducted for the U.S. Department of Energy's Energy Storage Systems Program. The Quarter 3 Milestone was completed on time. The milestone entails an ex situ analysis of a control as well as three carbon-containing negative plates in the raw, as cast form as well as after formation. The morphology, porosity, and porosity distribution within each plate was evaluated. In addition, baseline electrochemical measurements were performed on each battery to establish their initial performance. These measurements included capacity, internal resistance, and float current. The results obtained for the electrochemical testing were in agreement with previous evaluations performed at East Penn manufacturing. Cycling on a subset of the received East Penn cells containing different carbons (and a control) has been initiated.

  6. THE CHEMISTRY OF COAL MODEL COMPOUNDS -CLEAVAGE OF ALIPHATIC BRIDGES BETWEEN AROMATIC NUCLEI CATALYSED BY LEWIS ACIDS

    E-Print Network [OSTI]

    Taylor, Newell D.

    2011-01-01

    and Background I. II. III. IV. II. Coal Liquefaction . •Coal Structure • • . Lewis Acid Catalysts. Scope andOrganic Structure of Bituminous Coal", Proceedings, Stanford

  7. Leading neutron spectra

    E-Print Network [OSTI]

    A. B. Kaidalov; V. A. Khoze; A. D. Martin; M. G. Ryskin

    2006-05-27

    It is shown that the observation of the spectra of leading neutrons from proton beams can be a good probe of absorptive and migration effects. We quantify how these effects modify the Reggeized pion-exchange description of the measurements of leading neutrons at HERA. We are able to obtain a satisfactory description of all the features of these data. We also briefly discuss the corresponding data for leading baryons produced in hadron-hadron collisions.

  8. Lead, Communications Specialist

    Broader source: Energy.gov [DOE]

    A successful candidate in this position will: Serve as Lead, Communications Specialist for the Communications Team. Assists the Communications Director in planning, coordinating and implementing...

  9. Lead carbonate scintillator materials

    DOE Patents [OSTI]

    Derenzo, Stephen E. (Pinole, CA); Moses, William W. (Berkeley, CA)

    1991-01-01

    Improved radiation detectors containing lead carbonate or basic lead carbonate as the scintillator element are disclosed. Both of these scintillators have been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to other known scintillator materials. The radiation detectors disclosed are favorably suited for use in general purpose detection and in medical uses.

  10. JOURNAL OF RESEARCH IN SCIENCE TEACHING VOL. 48, NO. 4, PP. 396413 (2011) College Chemistry Students' Mental Models of Acids and Acid Strength

    E-Print Network [OSTI]

    Talanquer, Vicente A.

    2011-01-01

    on intuitively appealing, but many times mistaken, concept associations rather than as cognitive tools: chemistry; college education; explanations; mental models; reasoning Research in science education in general, and in chemistry education in particular, at the college level over the past 30 years has been

  11. Insight from molecular modelling: does the polymer side chain length matter for transport properties of perfluorosulfonic acid membranes?

    SciTech Connect (OSTI)

    Devanathan, Ramaswami; Dupuis, Michel

    2012-08-28

    We present a detailed analysis of the nanostructure of short side chain (SSC) perfluorosulfonic acid membrane and its effect on H{sub 2}O network percolation, H{sub 3}O{sup +} and H{sub 2}O diffusion, and mean residence times of H{sub 3}O{sup +} and H{sub 2}O near SO{sub 3}{sup -} groups based on molecular dynamics simulations. We studied a range of hydration levels ({lambda}) at temperatures of 300 and 360 K, and compare the results to our previous findings in the benchmark Nafion membrane at 300 K. The water channel diameter is about 20% larger in Nafion, while the extent of SO3- clustering is more in SSC membrane. The calculated channel diameter is in excellent agreement with the recently proposed cylindrical water channel model of these membranes. The H{sub 2}O network percolation occurs at comparable hydration levels, and the diffusion coefficients of H{sub 2}O and H{sub 3}O{sup +} are similar in SSC and Nafion membranes. Raising the temperature of the SSC membrane from 300 to 360 K provides a much bigger increase in proton vehicular diffusion coefficient (by a factor of about 4) than changing the side chain length. H3O+ ions are found to exchange more frequently with SO{sub 3}{sup -} partners at the higher temperature. Our key findings are that (a) the hydrophobic-hydrophilic separation in the two membranes is surprisingly similar; (b) at all hydration levels studied, the longer side chain of Nafion is bent and is effectively equivalent to a short side chain in terms of extension into the water domain; and (c) proton transport along the centre of the channel is improbable and vehicular proton transport occurs between SO{sub 3}{sup -} groups. The simulations are validated by good agreement with corresponding experimental values for the simulated membrane density and diffusion coefficients of H{sub 2}O.

  12. Lead carbonate scintillator materials

    DOE Patents [OSTI]

    Derenzo, S.E.; Moses, W.W.

    1991-05-14

    Improved radiation detectors containing lead carbonate or basic lead carbonate as the scintillator element are disclosed. Both of these scintillators have been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to other known scintillator materials. The radiation detectors disclosed are favorably suited for use in general purpose detection and in medical uses. 3 figures.

  13. PREDICTING TEMPERATURE BEHAVIOR IN CARBONATE ACIDIZING TREATMENTS 

    E-Print Network [OSTI]

    Tan, Xuehao

    2010-01-16

    ........................................................................................ 4 1.4 Objective and Procedures .................................................................. 4 1.5 Outline .............................................................................................. 5 2. ACID INJECTION PROBLEM.......................................................... 10 2.4 Wormhole Growth Model.................................................................. 11 2.5 Modified Volumetric Model .............................................................. 14 2.6 Solution of Acid Injection Problem...

  14. Corrosion by liquid lead and lead-bismuth: experimental results review and analysis

    SciTech Connect (OSTI)

    Zhang, Jinsuo

    2008-01-01

    Liquid metal technologies for liquid lead and lead-bismuth alloy are under wide investigation and development for advanced nuclear energy systems and waste transmutation systems. Material corrosion is one of the main issues studied a lot recently in the development of the liquid metal technology. This study reviews corrosion by liquid lead and lead bismuth, including the corrosion mechanisms, corrosion inhibitor and the formation of the protective oxide layer. The available experimental data are analyzed by using a corrosion model in which the oxidation and scale removal are coupled. Based on the model, long-term behaviors of steels in liquid lead and lead-bismuth are predictable. This report provides information for the selection of structural materials for typical nuclear reactor coolant systems when selecting liquid lead or lead bismuth as heat transfer media.

  15. Grant Reference Lead / Sole

    E-Print Network [OSTI]

    Rank Overall Score Grant Reference Lead / Sole Grant Grant Holder Research Organisation Project of Birmingham Controls on Soil Carbon Export revealed by Novel Tracers on multiple timescales (SCENT) Standard Grant DEC12 8 8 NE/K011871/1 N Melanie Leng NERC British Geological Survey A 500,000-year environmental

  16. Sandia National Laboratories: Due Diligence on Lead Acid Battery...

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

    are processed and recycled legally under a regularly audited New Mexico hazardous waste management permit, Pollution Prevention (P2) was prompted to perform a due diligence audit...

  17. Sandia National Laboratories: Due Diligence on Lead Acid Battery Recycling

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-ThroughputUpcoming Release of thePrograms: Center forFacebook Twitter YouTube

  18. Advanced Lead Acid Battery Consortium | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: Energy Resources JumpAdelan UK LtdWisconsin:Missouri:LLCLead

  19. Enrichment of plasma lipid subfractions with varying dietary levels of N-3 fatty acids in the canine model 

    E-Print Network [OSTI]

    Spencer, Angela Leah

    1999-01-01

    In an attempt to better understand how varying levels of dietary n-3 fatty acids affected enrichment of plasma lipid subfractions, the current study was undertaken. Adult dogs were fed one of two basal diets with the addition of beef tallow...

  20. Chapter 1 Childhood Lead Poisoning Childhood Lead Poisoning

    E-Print Network [OSTI]

    Chapter 1 Childhood Lead Poisoning 1 Childhood Lead Poisoning in the United States The problem of childhood lead poisoning. Child- hood lead poisoning is a major, preventable environmental health problem in the United States before 1978 still contain some lead- ScreeningfYoungfChildrenf orfLeadfPoisoning 13 #12

  1. Nucleation, growth and transport modelling of helium bubbles under nuclear irradiation in lead-lithium with the Self-consistent nucleation theory and surface tension corrections

    E-Print Network [OSTI]

    Fradera, Jorge

    2013-01-01

    Helium (He) nucleation in liquid metal breeding blankets of a DT fusion reactor may have a significant impact regarding system design, safety and operation. Large He production rates are expected due to tritium (T) fuel self-sufficiency requirement, as both, He and T, are produced at the same rate. Low He solubility, local high concentrations, radiation damage and fluid discontinuities, among other phenomena, may yield the necessary conditions for He nucleation. Hence, He nucleation may have a significant impact on T inventory and may lower the T breeding ratio. A model based on the self-consistent nucleation theory (SCT) with a surface tension curvature correction model has been implemented in OpenFoam(r) CFD code. A modification through a single parameter of the necessary nucleation condition is proposed in order to take into account all the nucleation triggering phenomena, specially radiation induced nucleation. Moreover, the kinetic growth model has been adapted so as to allow for the transition from a cr...

  2. Toolbox Safety Talk Lead Awareness

    E-Print Network [OSTI]

    Pawlowski, Wojtek

    Toolbox Safety Talk Lead Awareness Environmental Health & Safety Facilities Safety & Health Section Health & Safety for recordkeeping. Lead based paint is commonly found in homes built before 1978 and many industrial paints today still contain lead. Lead overexposure is one of the leading causes of workplace

  3. The risk of lead toxicity in homes with lead paint hazard

    SciTech Connect (OSTI)

    Schwartz, J.; Levin, R. )

    1991-02-01

    While lead paint has long been known to be a major source of lead poisoning, only a few small epidemiologic studies have attempted to assess directly the relative risk of lead poisoning due to the presence of lead paint. Using data from over 200,000 screening tests of children in the city of Chicago performed between 1976 and 1980, the relative risks can be quantified for children living in a major urban area. Lead paint was found to be a significant predictor of the probability of a child having lead toxicity. As expected, the reduction in leaded gasoline sales during the period reduced mean blood lead levels and increased the percentage of lead toxic children whose toxicity could be attributed to paint lead. Poisson regression models indicated that with the elimination of leaded gasoline, the relative risk of lead toxicity given lead paint exposure was 5.70 (95% CI, 4.13-7.86) during the winter and fall. The relative risk rose to 12.81 (95% CI, 7.33-22.4) in the spring and 15.8 (95% CI, 8.90-28.1) in the summer, probably due to increased exposure to window wells.

  4. Cardiovascular effects of lead exposure.

    E-Print Network [OSTI]

    Vaziri, N D; Gonick, H C

    2008-01-01

    air quality standards for lead exposure, 2006. ReferencesM, Wen SW. Environmental lead level and pregnancy-inducedDong W, Poulter N. Blood lead and blood pressure: evidence

  5. Cardiovascular effects of lead exposure.

    E-Print Network [OSTI]

    Vaziri, N D; Gonick, H C

    2008-01-01

    Ding Y. Effect of lead on nitric oxide synthase expressionND. Lead-induced hypertension: interplay of nitric oxide andZ. Nitric oxide synthase expression in the course of lead-

  6. Home refinishing, lead paint, and infant blood lead levels

    SciTech Connect (OSTI)

    Rabinowitz, M.; Leviton, A.; Bellinger, D.

    1985-04-01

    The blood lead levels of 249 infants were measured semi-annually from birth to two years of age; the home paint was sampled and any recent home refinishing activity recorded. Mean blood lead from birth to age 2 years did not vary systematically with age but did correlate significantly with the amount of lead in the indoor paint. Refinishing activity in homes with high lead paint was associated with elevations of blood lead averaging 69 per cent.

  7. Hydrochloric Acid-Catalyzed Levulinic Acid Formation from Cellulose: Data and Kinetic

    E-Print Network [OSTI]

    California at Riverside, University of

    Hydrochloric Acid-Catalyzed Levulinic Acid Formation from Cellulose: Data and Kinetic Model.com). In this study, the kinetics of the acid catalyzed hydrolysis of microcrystalline cellulose (Avicel PH101 of conditions: 160­200 C, hydrochloric acid concentrations of 0.309­0.927 M (11.3­33.8 g/l), cellulose

  8. Guidance Document SafeHandlingofHydrofluoricAcid

    E-Print Network [OSTI]

    -sleeved, buttoned lab coat, long pants and closed-toe shoes. Other PPE may be required, such as face shield, foot hydrofluoric acid in containers made of polyethylene, polypropylene, Teflon, lead or platinum. Do not use

  9. A Model pH Induced Drug-Delivery System Based on Poly(methacrylic acid) and its Interpolymer complex

    E-Print Network [OSTI]

    Murugan, K Durai; Natarajan, P

    2015-01-01

    The dynamics and structural aspects of polymethacrylic acid bound rhodamine-123 (PMAA-R123) and its interpolymer complex with poly(vinylpyrrolidone) were investigated and the results show that these complexes have potential for use as drug-delivery system under physiological conditions. The time resolved fluorescence anisotropy decay of PMAA-R123 at different pH exhibits an associated anisotropy decay behavior characteristic of two different environments experienced by the fluorophore and decays with one shorter and another longer lifetime components. The anisotropy decay retains normal bi-exponential behavior under neutral pH. Fluorescence correlation spectroscopic investigation reveals that the attached fluorophore undergoes hydrolysis under basic condition which results in the release of the fluorophore from the polymer backbone. Shrinkage in the hydrodynamic radius of PMAA is observed on addition of the complementary polymer PVP which is attributed to the formation compact solubilised nanoparticle like ag...

  10. Protocol for analytical ultracentrifugation sample preparation: 1. Provide partial specific volume (v-bar) of the proteins. If v-bar is not available, send complete amino acid

    E-Print Network [OSTI]

    Chan, Hue Sun

    -Propanol Acetic Acid Acetone Ammonium chloride Ammonium hydroxide Ammonium sulfate Barium chloride Cadmium chloride Cadmium sulfate Calcium chloride Cesium chloride Citric acid Cobaltous chloride Creatinine Cupric Guanidine hydrochloride Hydrochloric acid Inulin Lactic acid Lactose Lanthanum nitrate Lead nitrate Lithium

  11. Breakthrough: Lead-free Solder

    SciTech Connect (OSTI)

    Anderson, Iver

    2012-01-01

    Ames Laboratory senior metallurgist Iver Anderson explains the importance of lead-free solder in taking hazardous lead out of the environment by eliminating it from discarded computers and electronics that wind up in landfills. Anderson led a team that developed a tin-silver-copper replacement for traditional lead-tin solder that has been adopted by more than 50 companies worldwide.

  12. Breakthrough: Lead-free Solder

    ScienceCinema (OSTI)

    Anderson, Iver

    2013-03-01

    Ames Laboratory senior metallurgist Iver Anderson explains the importance of lead-free solder in taking hazardous lead out of the environment by eliminating it from discarded computers and electronics that wind up in landfills. Anderson led a team that developed a tin-silver-copper replacement for traditional lead-tin solder that has been adopted by more than 50 companies worldwide.

  13. Hydroxycarboxylic acids and salts

    SciTech Connect (OSTI)

    Kiely, Donald E; Hash, Kirk R; Kramer-Presta, Kylie; Smith, Tyler N

    2015-02-24

    Compositions which inhibit corrosion and alter the physical properties of concrete (admixtures) are prepared from salt mixtures of hydroxycarboxylic acids, carboxylic acids, and nitric acid. The salt mixtures are prepared by neutralizing acid product mixtures from the oxidation of polyols using nitric acid and oxygen as the oxidizing agents. Nitric acid is removed from the hydroxycarboxylic acids by evaporation and diffusion dialysis.

  14. A method to attenuate U(VI) mobility in acidic waste plumes using humic acids

    E-Print Network [OSTI]

    Wan, J.

    2011-01-01

    base properties of a goethite surface model: A theoreticalcomplexation of U(VI) on goethite (alpha-FeOOH). Geochim.acid and humic-acid on goethite, gibbsite and imogolite. J.

  15. Lead-based paint assessment

    SciTech Connect (OSTI)

    Lorie, C.; Cowdery, J.W.

    1994-12-31

    In 1977, The US consumer product safety commission banned the use of lead-based paint (LBP) in all industries, except the maritime industry which still has certain privileged uses. Unfortunately for property and building owners, the ban did not come soon enough. In response to this heightened awareness, several environmental market sectors addressing the issues have emerged. These include: residential; soil; commercial; water; and structures. The first and most important step in addressing the concerns posed by the existence of lead based contamination is to quantify the amount of lead-based product, to determine the location of the lead based product and the extent, if any, of lead based contamination, and to make recommendations for the remediation or abatement of the lead product and resultant contamination. In narrowing the focus of these issues, this paper discusses lead-based paint assessment; preparing and organizing the assessment, the regulatory considerations, assessment methodology, and presentation of results.

  16. Lead isotopes in sediments of the Loire River (France): natural versus anthropogenic origin

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Lead isotopes in sediments of the Loire River (France): natural versus anthropogenic origin France) were investigated by means of lead isotopes determined on the labile sediment fraction, or acid-extractable matter (AEM). The combination of trace elements and lead isotopes allows deciphering the origin

  17. FOR MORE INFORMATION, CONTACT: TP Straatsma, Initiative Lead

    E-Print Network [OSTI]

    FOR MORE INFORMATION, CONTACT: TP Straatsma, Initiative Lead 509-375-2802 tps@pnl.gov www.pnl.gov e Development of Exascale Algorithms for Molecular Modeling Lead investigator: Dr. Karol Kowalski Researchers Optimizations for Extreme Scale Systems Lead investigator: Dr. Daniel Chavarria Exascale systems will provide

  18. Computational Fluid Dynamics Modeling of a Lithium/Thionyl Chloride Battery with Electrolyte Flow

    E-Print Network [OSTI]

    Wang, Chao-Yang

    Computational Fluid Dynamics Modeling of a Lithium/Thionyl Chloride Battery with Electrolyte Flow W-dimensional model is developed to simulate discharge of a primary lithium/thionyl chloride battery. The model to the first task with important examples of lead-acid,1-3 nickel-metal hydride,4-8 and lithium-based batteries

  19. Results from the Cooler and Lead Tests

    E-Print Network [OSTI]

    Green, Michael A

    2010-01-01

    and D. Gupta, “Current Leads and Optimized Thermal Packagingtube Gas Cooled Electrical Leads for the g-2 Superconductinga pair of flexible copper leads attached. Figure 5. The Lead

  20. Mixed molecular motor traffic on nucleic acid tracks: models of transcriptional interference and regulation of gene expression

    E-Print Network [OSTI]

    Ghosh, Soumendu; Ghanti, Dipanwita; Chowdhury, Debashish

    2015-01-01

    While polymerizing a RNA molecule, a RNA polymerase (RNAP) walks step-by-step on the corresponding single-stranded DNA (ssDNA) template in a specific direction. Thus, a RNAP can be regarded as a molecular motor for which the ssDNA template serves as the track. The sites of start and stop of its walk on the DNA mark the two ends of the genetic message that it transcribes into RNA. Interference of transcription of two overlapping genes can strongly influence the levels of their expression, i.e., the overall rate of the synthesis of the corresponding full-length RNA molecules, through suppressive effect of one on the other. Here we model this process as a mixed traffic of two groups of RNAP motors that are characterized by two distinct pairs of on- and off-ramps. Each group polymerizes identical copies of a RNA while the RNAs polymerized by the two groups are different. These models, which may also be viewed as two interfering totally asymmetric simple exclusion processes, account for all modes of transcriptiona...

  1. Mixed molecular motor traffic on nucleic acid tracks: models of transcriptional interference and regulation of gene expression

    E-Print Network [OSTI]

    Bameta, Tripti; Ghanti, Dipanwita; Ghosh, Soumendu

    2015-01-01

    RNA polymerase (RNAP) is molecular machine that polymerizes a RNA molecule, a linear heteropolymer, using a single stranded DNA (ssDNA) as the corresponding template; the sequence of monomers of the RNA is dictated by that of monomers on the ssDNA template. While polymerizing a RNA, the RNAP walks step-by-step on the ssDNA template in a specific direction. Thus, a RNAP can be regarded also as a molecular motor and the sites of start and stop of its walk on the DNA mark the two ends of the genetic message that it transcribes into RNA. Interference of transcription of two overlapping genes is believed to regulate the levels of their expression, i.e., the overall rate of the corresponding RNA synthesis, through suppressive effect of one on the other. Here we model this process as a mixed traffic of two groups of RNAP motors that are characterized by two distinct pairs of start and stop sites. Each group polymerizes identical copies of a RNA while the RNAs polymerized by the two groups are different. These models...

  2. High temperature superconductor current leads

    DOE Patents [OSTI]

    Hull, John R. (Hinsdale, IL); Poeppel, Roger B. (Glen Ellyn, IL)

    1995-01-01

    An electrical lead having one end for connection to an apparatus in a cryogenic environment and the other end for connection to an apparatus outside the cryogenic environment. The electrical lead includes a high temperature superconductor wire and an electrically conductive material distributed therein, where the conductive material is present at the one end of the lead at a concentration in the range of from 0 to about 3% by volume, and at the other end of the lead at a concentration of less than about 20% by volume. Various embodiments are shown for groups of high temperature superconductor wires and sheaths.

  3. Lead-free primary explosives

    DOE Patents [OSTI]

    Huynh, My Hang V.

    2010-06-22

    Lead-free primary explosives of the formula (cat).sub.Y[M.sup.II(T).sub.X(H.sub.2O).sub.6-X].sub.Z, where T is 5-nitrotetrazolate, and syntheses thereof are described. Substantially stoichiometric equivalents of the reactants lead to high yields of pure compositions thereby avoiding dangerous purification steps.

  4. Waste Management Coordinating Lead Authors

    E-Print Network [OSTI]

    Columbia University

    10 Waste Management Coordinating Lead Authors: Jean Bogner (USA) Lead Authors: Mohammed Abdelrafie Ahmed, C. Diaz, A. Faaij, Q. Gao, S. Hashimoto, K. Mareckova, R. Pipatti, T. Zhang, Waste Management University Press, Cambridge, United Kingdom and New York, NY, USA. #12;586 Waste Management Chapter 10 Table

  5. Comparison of Optimal Thermodynamic Models of the Tricarboxylic Acid Cycle from Heterotrophs, Cyanobacteria, and Green Sulfur Bacteria

    SciTech Connect (OSTI)

    Thomas, Dennis G.; Jaramillo Riveri, Sebastian I.; Baxter, Douglas J.; Cannon, William R.

    2014-12-15

    We have applied a new stochastic simulation approach to predict the metabolite levels, energy flow, and material flux in the different oxidative TCA cycles found in E. coli and Synechococcus sp. PCC 7002, and in the reductive TCA cycle typical of chemolithoautotrophs and phototrophic green sulfur bacteria such as Chlorobaculum tepidum. The simulation approach is based on equations of state and employs an assumption similar to that used in transition state theory. The ability to evaluate the thermodynamics of metabolic pathways allows one to understand the relationship between coupling of energy and material gradients in the environment and the selforganization of stable biological systems, and it is shown that each cycle operates in the direction expected due to its environmental niche. The simulations predict changes in metabolite levels and flux in response to changes in cofactor concentrations that would be hard to predict without an elaborate model based on the law of mass action. In fact, we show that a thermodynamically unfavorable reaction can still have flux in the forward direction when it is part of a reaction network. The ability to predict metabolite levels, energy flow and material flux should be significant for understanding the dynamics of natural systems and for understanding principles for engineering organisms for production of specialty chemicals, such as biofuels.

  6. Thermal Stability of Acetohydroxamic Acid/Nitric Acid Solutions

    SciTech Connect (OSTI)

    Rudisill, T.S.

    2002-03-13

    The transmutation of transuranic actinides and long-lived fission products in spent commercial nuclear reactor fuel has been proposed as one element of the Advanced Accelerator Applications Program. Preparation of targets for irradiation in an accelerator-driven subcritical reactor would involve dissolution of the fuel and separation of uranium, technetium, and iodine from the transuranic actinides and other fission products. The UREX solvent extraction process is being developed to reject and isolate the transuranic actinides in the acid waste stream by scrubbing with acetohydroxamic acid (AHA). To ensure that a runaway reaction will not occur between nitric acid and AHA, an analogue of hydroxyl amine, thermal stability tests were performed to identify if any processing conditions could lead to a runaway reaction.

  7. Carbonic Acid Pretreatment of Biomass

    SciTech Connect (OSTI)

    G. Peter van Walsum; Kemantha Jayawardhana; Damon Yourchisin; Robert McWilliams; Vanessa Castleberry

    2003-05-31

    This project sought to address six objectives, outlined below. The objectives were met through the completion of ten tasks. 1) Solidify the theoretical understanding of the binary CO2/H2O system at reaction temperatures and pressures. The thermodynamics of pH prediction have been improved to include a more rigorous treatment of non-ideal gas phases. However it was found that experimental attempts to confirm theoretical pH predictions were still off by a factor of about 1.8 pH units. Arrhenius experiments were carried out and the activation energy for carbonic acid appears to be substantially similar to sulfuric acid. Titration experiments have not yet confirmed or quantified the buffering or acid suppression effects of carbonic acid on biomass. 2) Modify the carbonic acid pretreatment severity function to include the effect of endogenous acid formation and carbonate buffering, if necessary. It was found that the existing severity functions serve adequately to account for endogenous acid production and carbonate effects. 3) Quantify the production of soluble carbohydrates at different reaction conditions and severity. Results show that carbonic acid has little effect on increasing soluble carbohydrate concentrations for pretreated aspen wood, compared to pretreatment with water alone. This appears to be connected to the release of endogenous acids by the substrate. A less acidic substrate such as corn stover would derive benefit from the use of carbonic acid. 4) Quantify the production of microbial inhibitors at selected reaction conditions and severity. It was found that the release of inhibitors was correlated to reaction severity and that carbonic acid did not appear to increase or decrease inhibition compared to pretreatment with water alone. 5) Assess the reactivity to enzymatic hydrolysis of material pretreated at selected reaction conditions and severity. Enzymatic hydrolysis rates increased with severity, but no advantage was detected for the use of carbonic acid compared to water alone. 6) Determine optimal conditions for carbonic acid pretreatment of aspen wood. Optimal severities appeared to be in the mid range tested. ASPEN-Plus modeling and economic analysis of the process indicate that the process could be cost competitive with sulfuric acid if the concentration of solids in the pretreatment is maintained very high (~50%). Lower solids concentrations result in larger reactors that become expensive to construct for high pressure applications.

  8. Long range transport of acid rain precursors

    E-Print Network [OSTI]

    Fay, James A.

    1983-01-01

    A model of the long range transport of primary and secondary pollutants derived by Fay and Rosenzweig (1) is applied to the problem of the transport of acid rain precursors. The model describes the long term average (annual ...

  9. Review: The Great Lead Water Pipe Disaster

    E-Print Network [OSTI]

    Karalus, Daniel E

    2010-01-01

    Review: The Great Lead Water Pipe Disaster By WernerUSA Troesken, Werner. The Great Lead Water Pipe Disaster.paper. Alkaline paper. Lead poisoning usually conjures

  10. 2-Aminoimidazole Amino Acids as Inhibitors of the Binuclear Manganese Metalloenzyme Human Arginase I

    SciTech Connect (OSTI)

    Ilies, M.; Di Costanzo, L; North, M; Scott, J; Christianson, D

    2010-01-01

    Arginase, a key metalloenzyme of the urea cycle that converts L-arginine into L-ornithine and urea, is presently considered a pharmaceutical target for the management of diseases associated with aberrant L-arginine homeostasis, such as asthma, cardiovascular diseases, and erectile dysfunction. We now report the design, synthesis, and evaluation of a series of 2-aminoimidazole amino acid inhibitors in which the 2-aminoimidazole moiety serves as a guanidine mimetic. These compounds represent a new class of arginase inhibitors. The most potent inhibitor identified in this study, 2-(S)-amino-5-(2-aminoimidazol-1-yl)pentanoic acid (A1P, 10), binds to human arginase I with K{sub d} = 2 {micro}M and significantly attenuates airways hyperresponsiveness in a murine model of allergic airways inflammation. These findings suggest that 2-aminoimidazole amino acids represent new leads for the development of arginase inhibitors with promising pharmacological profiles.

  11. LEAD PAINT DISCLOSURE Housing built before 1978 may contain lead-based paint. Lead from paint, paint chips, and dust

    E-Print Network [OSTI]

    Royer, Dana

    LEAD PAINT DISCLOSURE Housing built before 1978 may contain lead-based paint. Lead from paint, paint chips, and dust can pose health hazards if not taken care of properly. Lead exposure is especially the presence of known lead-based paint and lead-based paint hazards in the dwelling. Tenants must also receive

  12. Impact of Fe (III) on the Performance of Viscoelastic Surfactant-Based Acids 

    E-Print Network [OSTI]

    Shu, Yi

    2013-08-02

    Viscoelastic surfactant (VES)-based acid systems have been used successfully in matrix and acid fracturing treatments. However, the existence of Fe (III) as a contaminant in such systems may lead to many problems, due to interactions between VES...

  13. Industrial lead paint removal specifications

    SciTech Connect (OSTI)

    Stone, R.C.

    1997-06-01

    The purpose of this paper is to inform the reader as to some of the pertinent rules and regulations promulgated by the Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA) that may effect an industrial lead paint removal project. The paper discusses a recommended schedule of procedures and preparations to be followed by the lead paint removal specification writer when analyzing the possible impact of the project on the environment, the public and workers. Implications of the Clean Air Act, the Clean Water Act and the Resource Conservation and Recovery Act (RCRA) along with hazardous waste handling, manifesting, transporting and disposal procedures are discussed with special emphasis placed as to their impact on the writer and the facility owner. As the rules and regulations are highly complex, the writer has attempted to explain the methodology currently being used in state-of-the-art industrial lead abatement specifications.

  14. Acid Violence in Pakistan

    E-Print Network [OSTI]

    Zia, Taiba

    2013-01-01

    Jordan. “Acid Attacks: Bangladesh’s Efforts to Stop thesubcontinent, especially in Bangladesh and Pakistan, and inon acid crimes in Bangladesh, for instance). Reliable data

  15. SIMULATING TRANSPORT AND GEOCHEMICAL EVOLUTION OF ACID MINE DRAINAGE THROUGH

    E-Print Network [OSTI]

    Aubertin, Michel

    SIMULATING TRANSPORT AND GEOCHEMICAL EVOLUTION OF ACID MINE DRAINAGE THROUGH DISCRETELY FRACTURED Waste Management ABSTRACT A modelling study is performed to assess the evolution of acid mine drainage-geochemical and geo-mechanical models for predicting environmental impacts of acid mine drainage in complex mining

  16. Design, set up, and testing of a matrix acidizing apparatus 

    E-Print Network [OSTI]

    Nevito Gomez, Javier

    2006-10-30

    , compared to hydraulic fracturing, and suitability to both generate extra production capacity and to restore original productivity in damaged wells. The acidizing process leads to increased economic reserves, improving the ultimate recovery in both sandstone...

  17. Asphaltene damage in matrix acidizing 

    E-Print Network [OSTI]

    Hinojosa, Roberto Antonio

    1996-01-01

    were acidized with three stage treatments of 15% hydrochloric acid (HCl), 12% HCL-3% hydrofluoric acid (HF) and 15% HCL. No additives were used in the acid. Comparisons were made between cores acidized with a variety of saturating fluids. Petrographic...

  18. Thermal conductivity of bulk nanostructured lead telluride

    SciTech Connect (OSTI)

    Hori, Takuma [Department of Mechanical Engineering, The University of Tokyo, Bunkyo, Tokyo 113-8656 (Japan); Chen, Gang [Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Shiomi, Junichiro, E-mail: shiomi@photon.t.u-tokyo.ac.jp [Department of Mechanical Engineering, The University of Tokyo, Bunkyo, Tokyo 113-8656 (Japan); PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012 (Japan)

    2014-01-13

    Thermal conductivity of lead telluride with embedded nanoinclusions was studied using Monte Carlo simulations with intrinsic phonon transport properties obtained from first-principles-based lattice dynamics. The nanoinclusion/matrix interfaces were set to completely reflect phonons to model the maximum interface-phonon-scattering scenario. The simulations with the geometrical cross section and volume fraction of the nanoinclusions matched to those of the experiment show that the experiment has already reached the theoretical limit of thermal conductivity. The frequency-dependent analysis further identifies that the thermal conductivity reduction is dominantly attributed to scattering of low frequency phonons and demonstrates mutual adaptability of nanostructuring and local disordering.

  19. Lead Slowing Down Spectrometer Status Report

    SciTech Connect (OSTI)

    Warren, Glen A.; Anderson, Kevin K.; Bonebrake, Eric; Casella, Andrew M.; Danon, Yaron; Devlin, M.; Gavron, Victor A.; Haight, R. C.; Imel, G. R.; Kulisek, Jonathan A.; O'Donnell, J. M.; Weltz, Adam

    2012-06-07

    This report documents the progress that has been completed in the first half of FY2012 in the MPACT-funded Lead Slowing Down Spectrometer project. Significant progress has been made on the algorithm development. We have an improve understanding of the experimental responses in LSDS for fuel-related material. The calibration of the ultra-depleted uranium foils was completed, but the results are inconsistent from measurement to measurement. Future work includes developing a conceptual model of an LSDS system to assay plutonium in used fuel, improving agreement between simulations and measurement, design of a thorium fission chamber, and evaluation of additional detector techniques.

  20. Isotopic generator for bismuth-212 and lead-212 from radium

    DOE Patents [OSTI]

    Atcher, Robert W. (Kensington, MD); Friedman, Arnold M. (Park Forest, IL); Hines, John (Glen Ellyn, IL)

    1987-01-01

    A method and apparatus for providing radionuclides of bismuth-212 and lead-212. Thorium-228 and carrier solution starting material is input to a radiologically contained portion of an isotopic generator system, and radium-224 is separated from thorium-228 which is retained by a strongly basic anion exchange column. The separated radium-224 is transferred to an accessible, strongly acidic cationic exchange column. The cationic column retains the radium-224, and natural radioactive decay generates bismuth-212 and lead-212. The cationic exchange column can also be separated from the contained portion of the system and utilized without the extraordinary safety measures necessary in the contained portion. Furthermore, the cationic exchange column provides over a relatively long time period the short lived lead-212 and bismuth-212 radionuclides which are useful for a variety of medical therapies.

  1. CONDITIONBIASOF HUNTER-SHOTRING-NECKEDDUCKS EXPOSEDTO LEAD

    E-Print Network [OSTI]

    McCracken, Kevin G.

    CONDITIONBIASOF HUNTER-SHOTRING-NECKEDDUCKS EXPOSEDTO LEAD KEVING. McCRACKEN,U.S. Geological-neckedducks(Aythyacollaris)exposedto lead by testing the null hypothesis that ducks shot by hunters do not differ in physiological condition lead. Collection type-by-concentration of blood lead and age-by-sex-by-concentration of blood lead

  2. What is lead-based paint

    SciTech Connect (OSTI)

    Vernon, L.S.

    1994-03-01

    The number of variety of lead-abatement regulations and requirements make it difficult and confusing to identify and properly respond to dangerous levels of lead in every situation. Definitions of lead-based paint'' and three test methods for lead detection are described to help determine when and how to test for the presence of lead.

  3. Characterization of acid river dilution and associated trace element behavior through hydrogeochemical modeling: A case study of the Banyu Pahit River

    E-Print Network [OSTI]

    McKenzie, Jeffrey M.

    Gill University, 3450 University Street, Montreal, Quebec, Canada H3A 2A7 a r t i c l e i n f o Article history, through mining, milling, or smelting of ores (Parsons et al., 2001), application of agricultural and Matschullat, 2006). A combination of these processes is at work in the case of acid mine drainage, where

  4. One Vaccine Leads to Another

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeeding access toOctober 1996Technologies / OmbudsmanOne Vaccine Leads to Another

  5. One Vaccine Leads to Another

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeeding access toOctober 1996Technologies / OmbudsmanOne Vaccine Leads to

  6. One Vaccine Leads to Another

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesseworkSURVEY UNIVERSEHowScientificOmbuds OfficeOne Vaccine Leads to Another

  7. CEC3002012003LCD LEAD COMMISSIONER DRAFT

    E-Print Network [OSTI]

    APRIL 2012 CEC3002012003LCD LEAD COMMISSIONER DRAFT GUIDEBOOK RENEWABLE ENERGY PROGRAM OVERALL PROGRAM GUIDEBOOK Fourth Edition Lead Commissioner Draft Guidebook CALIFORNIA ENERGY COMMISSION, California 95814 M Staff Proposed Errata to the Lead Commissioner Draft Renewables Portfolio Standard

  8. Lead-Safe Housing Policy Guidance

    E-Print Network [OSTI]

    Lead-Safe Housing Policy Guidance #12;ACKNOWLEDGEMENTS This guidance was prepared by the Alliance Gumm. The Alliance thanks the Childhood Lead Poisoning Prevention Branch of the Centers for Disease..............................................................................................................................1 PART I Basic Lead-Safe Housing Standards

  9. Cadmium, lead and mercury exposure in non smoking pregnant women

    SciTech Connect (OSTI)

    Hinwood, A.L., E-mail: a.hinwood@ecu.edu.au [Centre for Ecosystem Management, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027 (Australia); Callan, A.C.; Ramalingam, M.; Boyce, M. [Centre for Ecosystem Management, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027 (Australia)] [Centre for Ecosystem Management, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027 (Australia); Heyworth, J. [School Population Health, The University of Western Australia, 35 Stirling Highway Crawley, WA 6009 (Australia)] [School Population Health, The University of Western Australia, 35 Stirling Highway Crawley, WA 6009 (Australia); McCafferty, P. [ChemCentre, PO Box 1250, Bentley, WA 6983 (Australia)] [ChemCentre, PO Box 1250, Bentley, WA 6983 (Australia); Odland, J.Ø. [Department of Community Medicine, University of Tromsø, N-9037 Tromsø (Norway)] [Department of Community Medicine, University of Tromsø, N-9037 Tromsø (Norway)

    2013-10-15

    Recent literature suggests that exposure to low concentrations of heavy metals may affect both maternal and child health. This study aimed to determine the biological heavy metals concentrations of pregnant women as well as environmental and dietary factors that may influence exposure concentrations. One hundred and seventy three pregnant women were recruited from Western Australia, each providing a sample of blood, first morning void urine, residential soil, dust and drinking water samples. Participants also completed a questionnaire which included a food frequency component. All biological and environmental samples were analysed for heavy metals using ICP-MS. Biological and environmental concentrations of lead and mercury were generally low (Median Pb Drinking Water (DW) 0.04 µg/L; Pb soil <3.0 µg/g; Pb dust 16.5 µg/g; Pb blood 3.67 µg/L; Pb urine 0.55; µg/L Hg DW <0.03; Hg soil <1.0 µg/g; Hg dust <1.0 µg/g; Hg blood 0.46 µg/L; Hg urine <0.40 µg/L). Cadmium concentrations were low in environmental samples (Median CdDW 0.02 µg/L; Cdsoil <0.30 ug/g; Cddust <0.30) but elevated in urine samples (Median 0.55 µg/L, creatinine corrected 0.70 µg/g (range <0.2–7.06 µg/g creatinine) compared with other studies of pregnant women. Predictors of increased biological metals concentrations in regression models for blood cadmium were residing in the Great Southern region of Western Australia and not using iron/folic acid supplements and for urinary cadmium was having lower household annual income. However, these factors explained little of the variation in respective biological metals concentrations. The importance of establishing factors that influence low human exposure concentrations is becoming critical in efforts to reduce exposures and hence the potential for adverse health effects. -- Highlights: • Biological heavy metals concentrations in women in their 3rd trimester of pregnancy. • Exposure assessment including environmental, lifestyle and activity data. • Urinary cadmium concentrations were elevated in this group of pregnant women. • Blood lead and mercury concentrations were below recommended biological guideline values.

  10. Where Is Lead Found? Paint in many homes built before 1978 may contain lead.

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Where Is Lead Found? · Paint in many homes built before 1978 may contain lead. · Soil surrounding a home may have lead from exterior paint dust or from leaded gasoline in cars. · Household dust can contain lead from deteriorating lead- based paint or from soil containing lead that is tracked

  11. Lead phosphate glass compositions for optical components

    DOE Patents [OSTI]

    Sales, Brian C. (Oak Ridge, TN); Boatner, Lynn A. (Oak Ridge, TN)

    1987-01-01

    A lead phosphate glass to which has been added indium oxide or scandium oe to improve chemical durability and provide a lead phosphate glass with good optical properties.

  12. Power Marketing Administrations Leading the Nation's Transition...

    Energy Savers [EERE]

    Leading the Nation's Transition to a 21st Century Electric Grid Power Marketing Administrations Leading the Nation's Transition to a 21st Century Electric Grid November 19, 2012 -...

  13. Cities Leading through Energy Analysis and Planning

    Broader source: Energy.gov [DOE]

    The Cities Leading through Energy Analysis and Planning (Cities-LEAP) project delivers standardized, localized energy data and analysis that enables cities to lead clean energy innovation and...

  14. Replica amplification of nucleic acid arrays

    DOE Patents [OSTI]

    Church, George M. (Brookline, MA); Mitra, Robi D. (Chestnut Hill, MA)

    2010-08-31

    Disclosed are improved methods of making and using immobilized arrays of nucleic acids, particularly methods for producing replicas of such arrays. Included are methods for producing high density arrays of nucleic acids and replicas of such arrays, as well as methods for preserving the resolution of arrays through rounds of replication. Also included are methods which take advantage of the availability of replicas of arrays for increased sensitivity in detection of sequences on arrays. Improved methods of sequencing nucleic acids immobilized on arrays utilizing single copies of arrays and methods taking further advantage of the availability of replicas of arrays are disclosed. The improvements lead to higher fidelity and longer read lengths of sequences immobilized on arrays. Methods are also disclosed which improve the efficiency of multiplex PCR using arrays of immobilized nucleic acids.

  15. Formic Acid Mechanical,

    E-Print Network [OSTI]

    Lee, Tonghun

    that make building block chemicals. Ethanol is blended with gasoline, reducing our dependence on petroleum for high valued products, including: Aspartic acid Glucaric acid Glycerol Sorbitol Some companies already

  16. Plant fatty acid hydroxylases

    DOE Patents [OSTI]

    Somerville, Chris (Portola Valley, CA); Broun, Pierre (Burlingame, CA); van de Loo, Frank (Lexington, KY)

    2001-01-01

    This invention relates to plant fatty acyl hydroxylases. Methods to use conserved amino acid or nucleotide sequences to obtain plant fatty acyl hydroxylases are described. Also described is the use of cDNA clones encoding a plant hydroxylase to produce a family of hydroxylated fatty acids in transgenic plants. In addition, the use of genes encoding fatty acid hydroxylases or desaturases to alter the level of lipid fatty acid unsaturation in transgenic plants is described.

  17. On mobilization of lead and arsenic in groundwater in response to CO2 leakage from deep geological storage

    E-Print Network [OSTI]

    Zheng, L.

    2010-01-01

    Sigg, 1991. Adsorption of Lead(ll) on the Goethite Surface:A. , 1992. Determination of lead in sea-water by inductivelyModeling of copper(II) and lead(II) adsorption on kaolinite-

  18. The LEAD Roadmap: an Integrative Framework for Utilizing and Sharing Community Resources to Enhance Understanding and Impact of Weather1

    E-Print Network [OSTI]

    Plale, Beth

    1 The LEAD Roadmap: an Integrative Framework for Utilizing and Sharing Community Resources ................................................................................................ 10 Introduction Linked Environments for Atmospheric Discovery (LEAD; Plale et al. 2004, 2006, assimilation, modeling, mining, and cyberinfrastructure systems. LEAD empowers researchers and students

  19. Results from the Cooler and Lead Tests

    SciTech Connect (OSTI)

    Green, Michael A

    2010-06-10

    The report presents the results of testing MICE spectrometer magnet current leads on a test apparatus that combines both the copper leads and the high temperature superconducting (HTS) leads with a single Cryomech PT415 cooler and liquid helium tank. The current is carried through the copper leads from 300 K to the top of the HTS leads. The current is then carried through the HTS leads to a feed-through from the vacuum space to the inside of a liquid helium tank. The experiment allows one to measure the performance of both cooler stages along with the performance of the leads. While the leads were powered we measured the voltage drops through the copper leads, through the HTS leads, through spliced to the feed-through, through the feed-through and through the low-temperature superconducting loop that connects one lead to the other. Measurements were made using the leads that were used in spectrometer magnet 1A and spectrometer magnet 2A. These are the same leads that were used for Superbend and Venus magnets at LBNL. The IL/A for these leads was 5.2 x 10{sup 6} m{sup -1}. The leads turned out to be too long. The same measurements were made using the leads that were installed in magnet 2B. The magnet 2B leads had an IL/A of 3.3 x 10{sup 6} A m{sup -1}. This report discusses the cooler performance and the measured electrical performance of the lead circuit that contains the copper leads and the superconducting leads. All of the HTS leads that were installed in magnet 2B were current tested using this apparatus.

  20. EPA Lead Safety for Renovation, Repair and

    E-Print Network [OSTI]

    Tennessee, University of

    EPA Lead Safety for Renovation, Repair and Painting (RRP) Course Certified Renovators Class, CSP, CHMM, Certified Lead Paint Inspector.; Certified Renovator; EPA Ac- credited Lead RRP trainer or fax registratio Registration Form Cash Method of Payment Check Name Mailing Address Phone Lead Safety

  1. APPENDIX F Partition Coefficients For Lead

    E-Print Network [OSTI]

    APPENDIX F Partition Coefficients For Lead #12;Appendix F Partition Coefficients For Lead F.1.0 Background The review of lead Kd data reported in the literature for a number of soils led to the following important conclusions regarding the factors which influence lead adsorption on minerals, soils

  2. LEAD at Unidata Status Update, April 2009

    E-Print Network [OSTI]

    LEAD at Unidata Status Update, April 2009 Mohan Ramamurthy The LEAD project is currently in the no-cost extension period and nearing the end of its period of performance as an NSF Large ITR award. LEAD has and networking to huge data sets, human decision making and complex virtual organizations ­ LEAD functionality

  3. Henry and Fred Learn about Lead

    E-Print Network [OSTI]

    Holsinger, Kent

    Henry and Fred Learn about Lead Joan Bothell Activity book #12;Henry and Fred Learn about Lead the children's storybook Henry and Fred Learn about Lead/Enrique y Federico aprenden sobre el plomo (2003 of this activity book. The Henry and Fred storybook is about keeping children safe from lead poisoning, a serious

  4. Childhood Lead Poisoning What Is the Problem?

    E-Print Network [OSTI]

    CS239775 Childhood Lead Poisoning What Is the Problem? Approximately 500,000 U.S. children aged 1. Lead poisoning can affect nearly every system in the body. Because lead poisoning often occurs with no obvious symptoms, it frequently goes unrecognized. Lead poisoning can cause learning disabilities

  5. Chapter 6: Research Priorities Childhood Lead Poisoning

    E-Print Network [OSTI]

    Chapter 6: Research Priorities 6 Childhood Lead Poisoning Prevention Research Priorities If we are to improve lead poisoning prevention strategies, we need additional research in the following areas: 1 to control lead hazards in housing. · The effectiveness of family education about lead poisoning prevention

  6. Nucleic acid detection assays

    DOE Patents [OSTI]

    Prudent, James R.; Hall, Jeff G.; Lyamichev, Victor I.; Brow, Mary Ann; Dahlberg, James E.

    2005-04-05

    The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

  7. Nucleic acid detection compositions

    DOE Patents [OSTI]

    Prudent, James R. (Madison, WI); Hall, Jeff G. (Madison, WI); Lyamichev, Victor I. (Madison, WI); Brow, Mary Ann (Madison, WI); Dahlberg, James L. (Madison, WI)

    2008-08-05

    The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

  8. Cleavage of nucleic acids

    DOE Patents [OSTI]

    Prudent, James R. (Madison, WI); Hall, Jeff G. (Waunakee, WI); Lyamichev, Victor I. (Madison, WI); Brow; Mary Ann D. (Madison, WI); Dahlberg, James E. (Madison, WI)

    2010-11-09

    The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

  9. Cleavage of nucleic acids

    DOE Patents [OSTI]

    Prudent, James R. (Madison, WI); Hall, Jeff G. (Madison, WI); Lyamichev, Victor L. (Madison, WI); Brow, Mary Ann D. (Madison, WI); Dahlberg, James E. (Madison, WI)

    2007-12-11

    The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

  10. Lead exposure at uncovered outdoor firing ranges

    SciTech Connect (OSTI)

    Goldberg, R.L.; Hicks, A.M.; O'Leary, L.M.; London, S. (University of Southern California School of Medicine, Los Angeles (USA))

    1991-06-01

    Excessive lead exposure in shooting instructors at indoor firing ranges and covered outdoor firing ranges has been documented. The City of Los Angeles assessed exposure of its full-time shooting instructors at uncovered outdoor ranges via air monitoring and blood lead-level measurements. Results of these tests revealed that significant lead exposure and absorption can occur at outdoor firing ranges. The use of copper-jacketed ammunition may decrease air lead levels and decrease lead absorption by range instructors.

  11. Lead Safety Awareness This Bulletin provides information on the safe handling of lead

    E-Print Network [OSTI]

    Lead Safety Awareness PURPOSE This Bulletin provides information on the safe handling of lead and lead compounds during use and storage. Improper handling of lead and lead compounds may impact operations at Department of Energy (DOE) facilities. BACKGROUND Lead is found in batteries, pipes, solder

  12. Nucleic acid detection kits

    DOE Patents [OSTI]

    Hall, Jeff G.; Lyamichev, Victor I.; Mast, Andrea L.; Brow, Mary Ann; Kwiatkowski, Robert W.; Vavra, Stephanie H.

    2005-03-29

    The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof. The present invention further relates to methods and devices for the separation of nucleic acid molecules based on charge. The present invention also provides methods for the detection of non-target cleavage products via the formation of a complete and activated protein binding region. The invention further provides sensitive and specific methods for the detection of nucleic acid from various viruses in a sample.

  13. Microorganisms for producing organic acids

    DOE Patents [OSTI]

    Pfleger, Brian Frederick; Begemann, Matthew Brett

    2014-09-30

    Organic acid-producing microorganisms and methods of using same. The organic acid-producing microorganisms comprise modifications that reduce or ablate AcsA activity or AcsA homolog activity. The modifications increase tolerance of the microorganisms to such organic acids as 3-hydroxypropionic acid, acrylic acid, propionic acid, lactic acid, and others. Further modifications to the microorganisms increase production of such organic acids as 3-hydroxypropionic acid, lactate, and others. Methods of producing such organic acids as 3-hydroxypropionic acid, lactate, and others with the modified microorganisms are provided. Methods of using acsA or homologs thereof as counter-selectable markers are also provided.

  14. An assessment of acid fog

    SciTech Connect (OSTI)

    Lipfert, F.W.

    1992-12-31

    Airborne particles have long been associated with adverse effects on public health, begin with the notorious air pollution disasters of several decades ago. Although H{sub 2}SO{sub 4} was identified early on as a potential causal factors during these episodes (in part because of concern for potential health effects of particle acidity per se has intensified only recently. Most of the recent aerometric research in the US on acid fog has focused on the ability of clouds and fog to deliver acidity to vegetation and ecosystems. Strong acids are characterized chemically by their pH or H{sup +} concentration. For fog, concentrations are referred to the droplet liquid content; for other (i.e., ``clear air``) aerosols, to the volume of air sampled. A useful measure of the relationship between aerosol and fog is obtained by comparing their mass concentrations on the basis of the same volume of air, by multiplying fogwater concentrations by liquid water content (LWC). This paper reviews fog measurement capability, physical properties and chemistry, and presents a simple urban airshed model which is used to simulate the evolution of fog and aerosol concentrations under urban stagnation conditions.

  15. Reproductive toxicity of low-level lead exposure in men

    SciTech Connect (OSTI)

    Telisman, Spomenka Colak, Bozo; Pizent, Alica; Jurasovic, Jasna; Cvitkovic, Petar

    2007-10-15

    Parameters of semen quality, seminal plasma indicators of secretory function of the prostate and seminal vesicles, sex hormones in serum, and biomarkers of lead, cadmium, copper, zinc, and selenium body burden were measured in 240 Croatian men 19-52 years of age. The subjects had no occupational exposure to metals and no known other reasons suspected of influencing male reproductive function or metal metabolism. After adjusting for age, smoking, alcohol, blood cadmium, and serum copper, zinc, and selenium by multiple regression, significant (P<0.05) associations of blood lead (BPb), {delta}-aminolevulinic acid dehydratase (ALAD), and/or erythrocyte protoporphyrin (EP) with reproductive parameters indicated a lead-related increase in immature sperm concentration, in percentages of pathologic sperm, wide sperm, round sperm, and short sperm, in serum levels of testosterone and estradiol, and a decrease in seminal plasma zinc and in serum prolactin. These reproductive effects were observed at low-level lead exposure (BPb median 49 {mu}g/L, range 11-149 {mu}g/L in the 240 subjects) common for general populations worldwide. The observed significant synergistic effect of BPb and blood cadmium on increasing serum testosterone, and additive effect of a decrease in serum selenium on increasing serum testosterone, may have implications on the initiation and development of prostate cancer because testosterone augments the progress of prostate cancer in its early stages.

  16. Recovery of organic acids

    DOE Patents [OSTI]

    Verser, Dan W. (Golden, CO); Eggeman, Timothy J. (Lakewood, CO)

    2009-10-13

    A method is disclosed for the recovery of an organic acid from a dilute salt solution in which the cation of the salt forms an insoluble carbonate salt. A tertiary amine and CO.sub.2 are introduced to the solution to form the insoluble carbonate salt and a complex between the acid and an amine. A water immiscible solvent, such as an alcohol, is added to extract the acid/amine complex from the dilute salt solution to a reaction phase. The reaction phase is continuously dried and a product between the acid and the solvent, such as an ester, is formed.

  17. Recovery of organic acids

    DOE Patents [OSTI]

    Verser, Dan W. (Menlo Park, CA); Eggeman, Timothy J. (Lakewood, CO)

    2011-11-01

    A method is disclosed for the recovery of an organic acid from a dilute salt solution in which the cation of the salt forms an insoluble carbonate salt. A tertiary amine and CO.sub.2 are introduced to the solution to form the insoluble carbonate salt and a complex between the acid and an amine. A water immiscible solvent, such as an alcohol, is added to extract the acid/amine complex from the dilute salt solution to a reaction phase. The reaction phase is continuously dried and a product between the acid and the solvent, such as an ester, is formed.

  18. Reversible Acid Gas Capture

    ScienceCinema (OSTI)

    Dave Heldebrant

    2012-12-31

    Pacific Northwest National Laboratory scientist David Heldebrant demonstrates how a new process called reversible acid gas capture works to pull carbon dioxide out of power plant emissions.

  19. HYDROFLUORIC ACID Safety Office

    E-Print Network [OSTI]

    Davis, Lloyd M.

    in industrial processes: glass etching, metal cleaning, laboratory reagents, etc. Can be found in household products: rust removers, automotive detailing products, stain removers. #12;Hydrofluoric Acid ­ Chemical

  20. Lead Exposure Alters the Development of Agonistic

    E-Print Network [OSTI]

    Delville, Yvon

    Lead Exposure Alters the Development of Agonistic Behavior in Golden Hamsters M. Catalina Cervantes@mail.utexas.edu ABSTRACT: We tested the effects of exposure to different doses of lead acetate (either 0, 25, 100, or 400-specific effect of lead exposure on the development of aggression during puberty at doses resulting in blood

  1. LEAD COMMISSIONER REPORT RENEWABLE POWER IN

    E-Print Network [OSTI]

    LEAD COMMISSIONER REPORT RENEWABLE POWER IN CALIFORNIA: STATUS AND ISSUES DECEMBER 2011 CEC1502011002LCFREV1 #12;CALIFORNIA ENERGY COMMISSION 2011 INTEGRATED ENERGY POLICY REPORT LEAD COMMISSIONER of the 2011 Integrated Energy Policy Report Lead Commissioner. It does not necessarily represent the views

  2. ELLIPSOMETRY OF SULFATE FILMS ON LEAD

    E-Print Network [OSTI]

    Muller, R. H.

    2011-01-01

    Of SUlfATE fILMS ON LEAD R. H. Muller R. D. Peters May 1979be due to changes on the lead surface (instead of in theELLIPSOMETRY OF SULFATE FILMS ON LEAD R. H. Muller and R. D.

  3. Safety Policy LEAD IN PAINT POLICY

    E-Print Network [OSTI]

    Powers, Robert

    Safety Policy (10/96) LEAD IN PAINT POLICY://ehs.unl.edu/) Purpose: Lead is a recognized health hazard, and consequently, regulations have been developed to assure protection from excessive exposure to lead. Paints and coatings manufactured prior to 1978 often contained

  4. LEAD at Unidata Status Update, October 2009

    E-Print Network [OSTI]

    LEAD at Unidata Status Update, October 2009 Mohan Ramamurthy The official period of performance for the LEAD project ended on 30 September 2009 after a one-year the no-cost extension period. The six year ITR computing and networking to huge data sets, human decision making and complex virtual organizations ­ LEAD

  5. Appendix C.1 THE LEAD LABORATORY

    E-Print Network [OSTI]

    Appendix C.1 THE LEAD LABORATORY By PATRICK J. PARSONS, Ph.D.1 J. JULIAN CHISOLM, JR., M.D.2 Role of the Laboratory Laboratories measure lead concentrations in either clinical samples between the clinical and environmental lead laboratories and the issues that they face. Often

  6. Influence of age and water stress upon organic acid content and nitrogen metabolism of Gossypium hirsutum L 

    E-Print Network [OSTI]

    Coon, Craig Nelson

    1970-01-01

    formed protein. Significant. increases were obtained for aspartic acid, proline, serine, and valine, while concentrations of alanine and glutamic acid decreased. Praline in leaf blades of stressed plants was present in concentra- tions thirty times... of this decrease proves to vary greatly, which leads to an appreciable age variation in the ratios of the individual components of the amino acid fraction (10, 29, 33, 35, 52). Alanine, aspartic acid, and glutamic acid decrease in mature leaves and are somewhat...

  7. Volatile organic acids and microbial processes in the Yegua formation, east-central Texas

    E-Print Network [OSTI]

    Grossman, Ethan L.

    , 1982). Volatile organic acids such as acetic, propionic, iso- butyric, n-butyric, iso-valeric, and n volatile organic acids (VOA) in the Yegua formation. Acetic and propionic acid concentrations in mudstones modeled to estimate acetic acid transport from aquitard to aquifer. Assuming that SRB completely respire

  8. Leading the Way Leading the WayUniversity of Colorado Catalog

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    Leading the Way Leading the WayUniversity of Colorado Catalog Leading the Way Boulder 2002­03 #12 children in the village of San Pablo, Belize, don't haul water up a steep hill in buckets anymore because

  9. Zonal Jet Structure and the Leading Mode of Variability SCOTT J. EICHELBERGER AND DENNIS L. HARTMANN

    E-Print Network [OSTI]

    Hartmann, Dennis

    Zonal Jet Structure and the Leading Mode of Variability SCOTT J. EICHELBERGER AND DENNIS L the effects of the zonal jet structure on the leading mode of variability in the Northern Hemisphere. Model-driven and subtropical jets. When the jets are well separated, the leading mode of variability describes latitudinal

  10. Controlling acid rain

    E-Print Network [OSTI]

    Fay, James A.

    1983-01-01

    High concentrations of sulfuric and nitric acid in raTn fn the northeastern USA are caused by the large scale combustion of fossil fuels within this region. Average precipitation acidity is pH 4.2, but spatial and temporal ...

  11. An Instability Leading to Failure of Polyethylene in Uniaxial Creep

    E-Print Network [OSTI]

    An Instability Leading to Failure of Polyethylene in Uniaxial Creep L. J. ZAPAS and J. M. CRISSMAN model, a point of instability is pre- dicted for the uniaxial creep of high density polyethylene. From dead load experiments it has been found that the instabil- ity occurs for linear -polyethylene

  12. How Policy Analytics Leads to Changes "in the Culture"

    E-Print Network [OSTI]

    of Boats to Boat Stations ·Container Inspection at Ports ·Sports Stadium Security ·Nuclear DetectionHow Policy Analytics Leads to Changes "in the Culture": Examples from "Homeland Security" Fred security ·In each case, policy analytics (data-driven modeling and simulation) led to changes in policy

  13. Validation of a 20-year forecast of US childhood lead poisoning: Updated prospects for 2010

    SciTech Connect (OSTI)

    Jacobs, David E. . E-mail: dejacobs@starpower.net; Nevin, Rick

    2006-11-15

    We forecast childhood lead poisoning and residential lead paint hazard prevalence for 1990-2010, based on a previously unvalidated model that combines national blood lead data with three different housing data sets. The housing data sets, which describe trends in housing demolition, rehabilitation, window replacement, and lead paint, are the American Housing Survey, the Residential Energy Consumption Survey, and the National Lead Paint Survey. Blood lead data are principally from the National Health and Nutrition Examination Survey. New data now make it possible to validate the midpoint of the forecast time period. For the year 2000, the model predicted 23.3 million pre-1960 housing units with lead paint hazards, compared to an empirical HUD estimate of 20.6 million units. Further, the model predicted 498,000 children with elevated blood lead levels (EBL) in 2000, compared to a CDC empirical estimate of 434,000. The model predictions were well within 95% confidence intervals of empirical estimates for both residential lead paint hazard and blood lead outcome measures. The model shows that window replacement explains a large part of the dramatic reduction in lead poisoning that occurred from 1990 to 2000. Here, the construction of the model is described and updated through 2010 using new data. Further declines in childhood lead poisoning are achievable, but the goal of eliminating children's blood lead levels {>=}10 {mu}g/dL by 2010 is unlikely to be achieved without additional action. A window replacement policy will yield multiple benefits of lead poisoning prevention, increased home energy efficiency, decreased power plant emissions, improved housing affordability, and other previously unrecognized benefits. Finally, combining housing and health data could be applied to forecasting other housing-related diseases and injuries.

  14. Quality Support G. Q. Kirk, Lead (4)

    E-Print Network [OSTI]

    Quality Support G. Q. Kirk, Lead (4) R. L. Bullock (4) A. C. Hendricks (4) G. H. Henkel (4) D. L. Ramsey B. F. Siefken Electrical/I&C D. S. Wilder, Lead D. S. Asquith (5) B. L. Coday B. P. Ducamp C. D Technology J. K. Keith, Jr., Lead J. L. Anderson (8) M. B. Anderson (5) C. F. Guyett (8) S. N. Hammonds

  15. Pulmonary and gastric lead burden assessment for lead-recycling plant , J.J Sauvain2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Pulmonary and gastric lead burden assessment for lead-recycling plant workers Uzu, G.1 , J Chimiques des Métaux, 30 Avenue de Fondeyre 31200 Toulouse, France Key words: bioaccessibility, DTT, lead) and origin (furnace, refining and channeled emissions), lead toxicity and bioaccessibility assessment were

  16. Lead(ii) Detection An Exceptionally Selective Lead(ii)-Regulatory

    E-Print Network [OSTI]

    He, Chuan

    Lead(ii) Detection An Exceptionally Selective Lead(ii)-Regulatory Protein from Ralstonia Metallidurans: Development of a Fluorescent Lead(ii) Probe** Peng Chen, Bill Greenberg, Safiyh Taghavi, Christine Romano, Daniel van der Lelie, and Chuan He* Lead contamination is a serious threat to human health

  17. Identification of sources of lead exposure in French children by lead isotope analysis: a cross-

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Identification of sources of lead exposure in French children by lead isotope analysis: a cross://www.ehjournal.net/content/10/1/75 (28 August 2011) #12;RESEARCH Open Access Identification of sources of lead exposure in French children by lead isotope analysis: a cross- sectional study Youssef Oulhote1,2,3* , Barbara Le Bot

  18. Compatibility of PETN with lead azide

    SciTech Connect (OSTI)

    Hurd, R.; Fronabarger, J.W.; Johnson, R.; Fleming, W.

    1983-01-01

    The compatibility of PETN with lead azide at elevated temperatures has been investigated. Ramped and isothermal DSC methods were used to obtain energies of activation at temperatures above the melting point of PETN. Mixtures were found to show exothermic activity at lower temperatures than pure PETN. High Pressure Liquid Chromatography was used to follow the decomposition of PETN and PETN/lead azide mixtures at temperatures below the melting point. Reaction below 120/sup 0/C appeared minimal, while at higher temperatures, both PETN and PETN/lead azide mixtures showed degradation. A PETN/lead azide sample exploded at or near the melting point of PETN.

  19. Thermal conductivity of bulk nanostructured lead telluride

    E-Print Network [OSTI]

    Hori, Takuma

    Thermal conductivity of lead telluride with embedded nanoinclusions was studied using Monte Carlo simulations with intrinsic phonon transport properties obtained from first-principles-based lattice dynamics. The ...

  20. LEAD SUBSTITUTION AND ELIMINATION STUDY, PART II

    SciTech Connect (OSTI)

    T. MARTINEZ; M. COURNOYER

    2001-01-01

    Within the Nuclear Materials Technology Division of Los Alamos National Laboratory, lead is used as shielding for a variety of operations, including actinide chemistry, weapons production, radiochemistry, and analytical chemistry. In this study, waste minimization issues associated with replacing lead shielding with non-hazardous materials are addressed. These include institutional program available to support this effort, the hazards and accompanying controls grouped with lead shielding, operations that use lead bricks and how this effects the selection of the substitute. Life cycle management issues are also examined. As a final step, an approach to get buy-in from both technical and budget minded employees is presented.

  1. Electrical Engineer (Power Electronics, Lead Engineer) | Princeton...

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

    Engineer (Power Electronics, Lead Engineer) Department: Engineering Supervisor(s): Albert von Halle Requisition Number: 1500733 The Princeton University Plasma Physics Laboratory...

  2. Downregulation of Cinnamyl Alcohol Dehydrogenase (CAD) Leads...

    Office of Scientific and Technical Information (OSTI)

    of Cinnamyl Alcohol Dehydrogenase (CAD) Leads to Improved Saccharification Efficiency in Switchgrass Citation Details In-Document Search Title: Downregulation of Cinnamyl...

  3. Technoeconomic Modeling of Battery Energy Storage in SAM

    SciTech Connect (OSTI)

    DiOrio, Nicholas; Dobos, Aron; Janzou, Steven; Nelson, Austin; Lundstrom, Blake

    2015-09-01

    Detailed comprehensive lead-acid and lithium-ion battery models have been integrated with photovoltaic models in an effort to allow System Advisor Model (SAM) to offer the ability to predict the performance and economic benefit of behind the meter storage. In a system with storage, excess PV energy can be saved until later in the day when PV production has fallen, or until times of peak demand when it is more valuable. Complex dispatch strategies can be developed to leverage storage to reduce energy consumption or power demand based on the utility rate structure. This document describes the details of the battery performance and economic models in SAM.

  4. Saturation of the leading spike growth in backward Raman amplifiers

    SciTech Connect (OSTI)

    Malkin, V. M.; Fisch, N. J. [Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08540 (United States); Toroker, Z. [Department of Electrical Engineering, Technion Israel Institute of Technology, Haifa 32000 (Israel)

    2014-09-15

    Backward Raman amplification of laser pulses in plasmas can produce nearly relativistic unfocused output intensities and multi-exawatt powers in compact devices. The largest achievable intensity depends on which of major competitive processes set this limit. It is shown here that the relativistic electron nonlinearity can cause saturation of the leading amplified spike intensity before filamentation instabilities develop. A simple analytical model for the saturation, which supports numerical simulations, is suggested. The upper limit for the leading output spike unfocused intensity is calculated.

  5. INVESTIGATIONS ON THE USE OF ANODIC STRIPPING VOLTAMMETRY FOR THE ANALYSES OF LEAD IN SALINE ENVIRONMENTS

    E-Print Network [OSTI]

    Case, Charles W.

    2011-01-01

    A - Lead Data . . . . . . . . . . . . . . . . . . . . .10 Lead ..of Lead . . . . . . . . . . . . . . . . . . . . . 119 -2ce

  6. Coordination chemistry of two heavy metals: I, Ligand preferences in lead(II) complexation, toward the development of therapeutic agents for lead poisoning: II, Plutonium solubility and speciation relevant to the environment

    SciTech Connect (OSTI)

    Neu, M.P.

    1993-11-01

    The coordination chemistry and solution behavior of the toxic ions lead(II) and plutonium(IV, V, VI) have been investigated. The ligand pK{sub a}s and ligand-lead(II) stability constants of one hydroxamic acid and four thiohydroaxamic acids were determined. Solution thermodynamic results indicate that thiohydroxamic acids are more acidic and slightly better lead chelators than hydroxamates, e.g., N-methylthioaceto-hydroxamic acid, pK{sub a} = 5.94, log{beta}{sub 120} = 10.92; acetohydroxamic acid, pK{sub a} = 9.34, log{beta}{sub l20} = 9.52. The syntheses of lead complexes of two bulky hydroxamate ligands are presented. The X-ray crystal structures show the lead hydroxamates are di-bridged dimers with irregular five-coordinate geometry about the metal atom and a stereochemically active lone pair of electrons. Molecular orbital calculations of a lead hydroxamate and a highly symmetric pseudo octahedral lead complex were performed. The thermodynamic stability of plutonium(IV) complexes of the siderophore, desferrioxamine B (DFO), and two octadentate derivatives of DFO were investigated using competition spectrophotometric titrations. The stability constant measured for the plutonium(IV) complex of DFO-methylterephthalamide is log{beta}{sub 110} = 41.7. The solubility limited speciation of {sup 242}Pu as a function of time in near neutral carbonate solution was measured. Individual solutions of plutonium in a single oxidation state were added to individual solutions at pH = 6.0, T = 30.0, 1.93 mM dissolved carbonate, and sampled over intervals up to 150 days. Plutonium solubility was measured, and speciation was investigated using laser photoacoustic spectroscopy and chemical methods.

  7. Fatty Acid Carcass Mapping 

    E-Print Network [OSTI]

    Turk, Stacey N.

    2010-01-14

    We hypothesized that subcutaneous (s.c.) adipose tissue would differ in monounsaturated (MUFA) and saturated fatty acid (SFA) composition among different depots throughout a beef carcass. To test this, 50 carcasses from a variety of breed types...

  8. Photoproduction at HERA with a Leading Proton

    E-Print Network [OSTI]

    Photoproduction at HERA with a Leading Proton Hanna Mahlke­Kr¨uger H1 Collaboration, DESY Abstract. The total cross­section for the semi­inclusive photoproduction process with a leading proton in the final­sections refer to the kinematic range with transverse momenta of the scattered proton restricted to p T Ÿ 0:2 Ge

  9. Managing lead-based paint abatement wastes

    SciTech Connect (OSTI)

    Steele, N.L.C.

    1994-12-31

    Renovation, remodeling, demolition, and surface preparation for painting, in addition to specified lead abatement, are all activities that have the potential to produce hazardous wastes if a property was painted with lead-based paint. Lead-based paint was used on residential structures until 1978, when most residential uses were banned by the Consumer Products Safety Council. Prior to the 1950s, paints for residential uses may have contained up to 50% lead by weight. Today, commercial and military paints may still contain lead and can be used on non-residential structures. The lead content of residential paints is limited to 0.06% lead (by weight) in the dried film. This paper provides an overview of some of the information needed to properly manage lead-based paint abatement wastes. The issues covered in this paper include waste classification, generator status, treatment, and land disposal restrictions. The author assumes that the reader is familiar with the provision of the Health and Safety Code and the California Code of Regulations that pertain to generation and management of hazardous wastes. Citations provided herein do not constitute an exhaustive list of all the regulations with which a generator of hazardous waste must comply.

  10. Fan-fold shielded electrical leads

    DOE Patents [OSTI]

    Rohatgi, R.R.; Cowan, T.E.

    1996-06-11

    Disclosed are fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate. 3 figs.

  11. Atmospheric lead in downtown Guatemala City

    SciTech Connect (OSTI)

    Durando, M.L.; Aragon, S.R.

    1982-01-01

    Atomic absorption (AA) analysis was employed to determine, for the first time in this country, lead concentrations in aerosols collected in Nuclepore filter media during the months of February and March (1980) in Guatemala City, Guatemala. In particular, the lead in the atmospheric fine particulate was measured in different downtown locations around noontime and in a single location at 1-h intervals throughout the day. The first was used to study short-term variations from one location to the other, and the second one was used to correlate parameters such as traffic density and wind velocity with the levels of airborne lead on the same day. In addition, this paper presents a brief discussion of the lead content in Guatemalan gasoline, the lead levels in street dusts, and the total suspended particulate matter in downtown Guatemala City.

  12. Fan-fold shielded electrical leads

    DOE Patents [OSTI]

    Rohatgi, Rajeev R. (Mountain View, CA); Cowan, Thomas E. (Livermore, CA)

    1996-01-01

    Fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate.

  13. Collective aspects of protein folding illustrated by a toy model

    SciTech Connect (OSTI)

    Stillinger, F.H. [AT& T Bell Laboratories, Murray Hill, New Jersey 07974 (United States)] [AT& T Bell Laboratories, Murray Hill, New Jersey 07974 (United States); Head-Gordon, T. [Life Sciences Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States)] [Life Sciences Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States)

    1995-09-01

    A simple toy model for polypeptides serves as a testbed to illuminate some nonlocal, or collective, aspects of protein folding phenomena. The model is two dimensional and has only two amino acids, but involves a continuous range of backbone bend angles. Global potential energy minima and their folding structures have been determined for leading members of two special and contrasting polypeptide sequences, center doped and Fibonacci, named descriptively for their primary structures. The results display the presence of spontaneous symmetry breaking, elastic strain, and substantial conformational variation for specific embedded amino acid strings. We conclude that collective variables generated by the primary amino acid structure may be required for fully effective protein folding predictors, including those based on neural networks.

  14. CORROSION OF LEAD SHIELDING IN NUCLEAR MATERIALS PACKAGES

    SciTech Connect (OSTI)

    Subramanian, K; Kerry Dunn, K; Joseph Murphy, J

    2008-07-18

    Inspection of United States-Department of Energy (US-DOE) model 9975 nuclear materials shipping package revealed corrosion of the lead shielding that was induced by off-gas constituents from organic components in the package. Experiments were performed to determine the corrosion rate of lead when exposed to off-gas or degradation products of these organic materials. The results showed that the room temperature vulcanizing (RTV) sealant was the most corrosive organic species used in the construction of the packaging, followed by polyvinyl acetate (PVAc) glue. Fiberboard material, also used in the construction of the packaging induced corrosion to a much lesser extent than the PVAc glue and RTV sealant, and only in the presence of condensed water. The results indicated faster corrosion at temperatures higher than ambient and with condensed water. In light of these corrosion mechanisms, the lead shielding was sheathed in a stainless steel liner to mitigate against corrosion.

  15. IMPROVED PROCESSES TO REMOVE NAPHTHENIC ACIDS

    SciTech Connect (OSTI)

    Aihua Zhang; Qisheng Ma; William A. Goddard; Yongchun Tang

    2004-04-28

    In the first year of this project, we have established our experimental and theoretical methodologies for studies of the catalytic decarboxylation process. We have developed both glass and stainless steel micro batch type reactors for the fast screening of various catalysts with reaction substrates of model carboxylic acid compounds and crude oil samples. We also developed novel product analysis methods such as GC analyses for organic acids and gaseous products; and TAN measurements for crude oil. Our research revealed the effectiveness of several solid catalysts such as NA-Cat-1 and NA-Cat-2 for the catalytic decarboxylation of model compounds; and NA-Cat-5{approx}NA-Cat-9 for the acid removal from crude oil. Our theoretical calculations propose a three-step concerted oxidative decarboxylation mechanism for the NA-Cat-1 catalyst.

  16. Adsorption of fulvic acid on goethite

    SciTech Connect (OSTI)

    Filius, J.D.; Lumsdon, D.G.; Meeussen, J.C.L.; Hiemstra, T.; Riemsduk, W.H. van

    2000-01-01

    The adsorption of fulvic acid by goethite was determined experimentally as a function of concentration, pH, and ionic strength. The data were described with the CD-MUSIC model of Hiemstra and Van Riemsdijk (1996), which allows the distribution of charge of the bound fulvate molecule over a surface region. Simultaneously, the concentration, pH, and salt dependency of the binding of fulvic acid can be described. Using the same parameters, the basic charging behavior of the goethite in the absence of fulvic acid could be described well. The surface species used in the model indicate that inner sphere coordination of carboxylic groups of the fulvate molecule is important at low pH, whereas at high pH the outer sphere coordination with reactive groups of the fulvate molecule with high proton affinity is important.

  17. Lead-210 as a tracer for acidic deposition in areas of complex topography 

    E-Print Network [OSTI]

    Mourne, Richard W. (Richard William)

    1994-01-01

    This thesis reports an investigation into methods of determining the long term deposition field for atmospheric aerosols in areas of complex topography using the soil inventories of atmospherically derived radionuclides. ...

  18. Research, development, and demonstration of lead-acid batteries for electric vehicle propulsion. Annual report, 1980

    SciTech Connect (OSTI)

    Not Available

    1981-03-01

    The progress and status of Eltra's Electric Vehicle Battery Program during FY-80 are presented under five divisional headings: Research on Components and Processes; Development of Cells and Modules for Electric Vehicle Propulsion; Sub-Systems; Pilot Line Production of Electric Vehicle Battery Prototypes; and Program Management.

  19. Research, development, and demonstration of lead-acid batteries for electric vehicle propulsion. Annual report, 1979

    SciTech Connect (OSTI)

    Not Available

    1980-06-01

    The initial phase of work comprises three factorial experiments to evaluate a variety of component combinations. Goals to be met by these batteries include the following: capacity at 3 h discharge, 20 to 30 kWh; specific energy, 40 Wh/kg; specific power, 1000 W/kg for 15 s; cycle life, 800 cycles to 80% depth; price, $50/kWh. The status of the factorial experiments is reviewed. The second phase of work, design of an advanced battery, has the following goals: 30 to 40 kWh; 60 Wh/kg; 150 W/kg for 15 s; 1000 cycles to 80% depth; $40/kWh. It is not yet possible to say whether these goals can be met. Numerous approaches are under study to increase the utilization of battery chemicals. A battery design with no live electrical connection above the battery is being developed. 52 figures, 52 tables. (RWR)

  20. A Study of Lead-Acid Battery Efficiency Near Top-of-Charge

    Office of Scientific and Technical Information (OSTI)

    of charge for the specific battery under test. Specific charge versus state of charge information is particularly important for systems where a very large battery (that is, one...

  1. Fact Sheet: Carbon-Enhanced Lead-Acid Batteries (October 2012) | Department

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRD Report to Congress MoreHyd rog enOffice| Department of2013) |of

  2. A Study of Lead-Acid Battery Efficiency Near Top-of-Charge

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding accessby a contractor of the(TechnicalConnectTimothy791

  3. DOE-HDBK-1084-95; Primer on Lead-Acid Storage Batteries

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 2015 GATEWAY TakestoFlex Bulletin028-2009 June

  4. DOE-SPEC-3018-96; Flooded-Type Lead-Acid Storage Batteries

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 2015 GATEWAY6.1viii ACRONYMS,4-97NE-STD-1004-928-96 August

  5. DOE-SPEC-3019-96; Valve-Regulated Type Lead-Acid Storage Batteries

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 2015 GATEWAY6.1viii ACRONYMS,4-97NE-STD-1004-928-96

  6. Fact Sheet: Carbon-Enhanced Lead-Acid Batteries (October 2012)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12, 2015Executive Order14, 20111,FY 2007TrafficDepartmentin

  7. Fact Sheet: Carbon-Enhanced Lead-Acid Batteries (October 2012) | Department

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12, 2015Executive Order14, 20111,FY 2007TrafficDepartmentinof Energy

  8. SU-E-J-110: TG 51 Dosimetry : With Or Without Lead

    SciTech Connect (OSTI)

    Shah, M [A Meigooni, Comprehensive cancer center of Nevada - Las Vegas, NV (United States)

    2014-06-01

    TG-51 Dosimetry: With or Without Lead. Purpose: In this project, an analytical method has been introduced for adjustment of the TG-51 recommended KQ in order to produce accurate dosimetric data for high energy photons without the lead foil. Methods: These investigations were performed using a 30 cm × 30 cm × 30 cm CIVCO water tank, A12 EXRADIN Water proof Farmer Chamber, a Standard Imaging MAX 4000 electrometer, and 1 mm thick lead foil from Standard Imaging. Complete TG-51 was performed every month with and without lead. The results were analyzed and an analytical model has been developed for comparing the values of KQ. TG-51 Table I was used to obtain KQ values. Results: The dosimetric evaluations were obtained for Varian Linear accelerators Model 21ix and 21ex. These results indicates that the measured data with lead foil in place as recommended by TG-51 is in excellent agreement (within 0.1%) with the calculated data obtained by the new model, from our dosimetry data without-lead. If equation 15 of the TG-51 report is used without any adjustments, it will lead to differences of about 1.6 % (on the average) in relative data which will Resultin differences of about 0.3 % (on the average) in the KQ Values. The KQ value for 18 MV obtained consistently with the equation of TG-51 “with lead” and “without lead” were 0.971 and 0.974, respectively. The 0.3 % higher results for KQ without lead eventually will lead to 0.3% larger output. However, by considering this model the KQ value was found to be 0.971 for dosimetry without lead. Conclusion: The analytical model that was introduced in this project was able to reproduce the dosimetric data of the high energy linear accelerators to within 0.1% without the use of the lead foil.

  9. Method for measuring lead concentrations in blood

    DOE Patents [OSTI]

    Nogar, Nicholas S. (Los Alamos, NM)

    2001-01-01

    Method for measuring lead concentrations in blood. The present invention includes the use of resonant laser ablation to analyze .ltoreq.1 .mu.L (or equivalent mass) samples of blood for lead content. A typical finger prick, for example, yields about 10 .mu.L. Solid samples may also readily be analyzed by resonant laser ablation. The sample is placed on a lead-free, electrically conducting substrate and irradiated with a single, focused laser beam which simultaneously vaporizes, atomizes, and resonantly ionizes an analyte of interest in a sample. The ions are then sorted, collected and detected using a mass spectrometer.

  10. Sustainability Peer Educator Group Lead Positions Position: Sustainability Peer Educators Group Lead

    E-Print Network [OSTI]

    Boonstra, Rudy

    Sustainability Peer Educator Group Lead Positions Position: Sustainability Peer Educators Group times) Term of position: September 2013 ­ April 2014 Position Summary: Working with the Sustainability Project Coordinator, the Sustainability Peer Educator Group Leads will be responsible

  11. Measurement of the production of neighbouring jets in lead-lead...

    Office of Scientific and Technical Information (OSTI)

    Measurement of the production of neighbouring jets in lead-lead collisions at sNN2.76 TeV with the ATLAS detector Citation Details In-Document Search Title: Measurement of the...

  12. Coordinated development of leading biomass pretreatment technologies

    E-Print Network [OSTI]

    California at Riverside, University of

    recycle, controlled pH, dilute acid, flowthrough, and lime approaches were applied to prepare corn stover Renewable Energy Laboratory, Purdue University, and Texas A&M University. An Agri- cultural and Industrial to power a transportation sector that is almost totally dependent on oil (>96%). Further, transportation

  13. Electron transport in lead selenide nanocrystal arrays

    E-Print Network [OSTI]

    Schriver, Maria C

    2005-01-01

    I have investigated electrical properties of arrays of lead selenide (PbSe) nanocrystals (NC's) of approximately 6nm diameter. The films become substantially more conducting when annealed at 400K, although no chemical ...

  14. Comparison of soy protein concentrates produced by membrane filtration and acid precipitation 

    E-Print Network [OSTI]

    Kim, Hyun Jung

    2003-01-01

    The recovery of proteins using ultrafiltration (UF) process is an attractive alternative compared to conventional acid precipitation method. The mild processing condition, which leads to less protein denaturation, may be ...

  15. EFFECTS OF NITRIC ACID ON CRITICALITY SAFETY ANALYSIS

    SciTech Connect (OSTI)

    Williamson, B.

    2011-08-18

    As nitric acid molarity is increased, there are two competing phenomena affecting the reactivity of the system. First, there is interaction between each of the 10 wells in the basket-like insert. As the molarity of the nitric acid solution is increased (it moves from 100% water to 100% HNO{sub 3}), the hydrogen atom density decreases by about 80%. However, it remains a relatively efficient moderator. The moderating ratio of nitric acid is about 90% that of water. As the media between the wells is changed from 100% water to 100% nitric acid, the density of the media increases by 50%. A higher density typically leads to a better reflector. However, when the macroscopic scattering cross sections are considered, nitric acid is a much worse reflector than water. The effectiveness of nitric acid as a reflector is about 40% that of water. Since the media between the wells become a worse reflector and still remains an effective moderator, interaction between the wells increases. This phenomenon will cause reactivity to increase as nitric acid molarity increases. The seond phenomenon is due to the moderating ratio changing in the high concentration fissile-nitric acid solution in the 10 wells. Since the wells contain relatively small volumes of high concentration solutions, a small decrease in moderating power has a large effect on reactivity. This is due to the fact that neutrons are more likely to escape the high concentration fissile solution before causing another fission event. The result of this phenomenon is that as nitric acid molarity increases, reactivity decreases. Recent studies have shown that the second phenomenon is indeed the dominating force in determining reactivity changes in relation to nitric acid molarity changes. When considering the system as a whole, as nitric acid molarity increases, reactivity decreases.

  16. Synthesis of acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters

    DOE Patents [OSTI]

    Moens, Luc (Lakewood, CO)

    2003-06-24

    A process of preparing an acid addition salt of delta-aminolevulinc acid comprising: a) dissolving a lower alkyl 5-bromolevulinate and hexamethylenetetramine in a solvent selected from the group consisting of water, ethyl acetate, chloroform, acetone, ethanol, tetrahydrofuran and acetonitrile, to form a quaternary ammonium salt of the lower alkyl 5-bromolevulinate; and b) hydrolyzing the quaternary ammonium salt with an inorganic acid to form an acid addition salt of delta-aminolevulinic acid.

  17. LEAD COMMISSIONER DRAFT GUIDEBOOK NEW SOLAR HOMES PARTNERSHIP

    E-Print Network [OSTI]

    LEAD COMMISSIONER DRAFT GUIDEBOOK NEW SOLAR HOMES PARTNERSHIP GUIDEBOOK Seventh Edition Lead COMMISSION Edmund G. Brown, Jr., Governor #12;CALIFORNIA ENERGY COMMISSION Andrew McAllister Lead

  18. Effect of dietary asorbic acid on cholesterol metabolism of the chicken 

    E-Print Network [OSTI]

    Johnstone, Barbara Jean

    1987-01-01

    system of collagen synthesis. The lack of asco(bic acid results in underhydroxyiated proline molecules in tr opocollagen and an impai( ed cross-linking system leading to the formation of insoluble collagen fibers and a reduction in connective tissue... ix REVIEW OF LITERATURE Historical Perspective Chemistry and Biosynthesis Absorption, Tissue Transport and Distribution Biochemical Functions of Ascorbic Acid Ascorbic Acid and Atherosclerosis 15 MATERIALS AND METHODS 33 Experiments 1 and 2...

  19. Variation in Morphology, Hygroscopicity, and Optical Properties of Soot Particles Coated by Dicarboxylic Acids 

    E-Print Network [OSTI]

    Xue, Huaxin

    2010-07-14

    occurred. Coating of soot with glutaric acid, on the other hand, leads to a strong size shrinking with a diameter growth factor ~0.60, even after the acid has been removed by heating suggesting the strong restructuring of the soot agglomerate...

  20. Plant fatty acid hydroxylase

    DOE Patents [OSTI]

    Somerville, Chris (Portola Valley, CA); van de Loo, Frank (Lexington, KY)

    2000-01-01

    The present invention relates to the identification of nucleic acid sequences and constructs, and methods related thereto, and the use of these sequences and constructs to produce genetically modified plants for the purpose of altering the composition of plant oils, waxes and related compounds.

  1. Fatty acid-producing hosts

    DOE Patents [OSTI]

    Pfleger, Brian F; Lennen, Rebecca M

    2013-12-31

    Described are hosts for overproducing a fatty acid product such as a fatty acid. The hosts include an exogenous nucleic acid encoding a thioesterase and, optionally, an exogenous nucleic acid encoding an acetyl-CoA carboxylase, wherein an acyl-CoA synthetase in the hosts are functionally delected. The hosts prefereably include the nucleic acid encoding the thioesterase at an intermediate copy number. The hosts are preferably recominantly stable and growth-competent at 37.degree. C. Methods of producing a fatty acid product comprising culturing such hosts at 37.degree. C. are also described.

  2. Studies on the chemical synthesis and characterization of lead oxide nanoparticles with different organic capping agents

    SciTech Connect (OSTI)

    Arulmozhi, K. T., E-mail: arulsheelphy@gmail.com [Physics Wing (DDE), Annamalai University, Tamil Nadu, India - 608 002 (India); Mythili, N. [Department of Physics, Annamalai University, Tamil Nadu, India - 608 002 (India)] [Department of Physics, Annamalai University, Tamil Nadu, India - 608 002 (India)

    2013-12-15

    Lead oxide (PbO) nanoparticles were chemically synthesized using Lead (II) acetate as precursor. The effects of organic capping agents such as Oleic acid, Ethylene Diamine Tetra Acetic acid (EDTA) and Cetryl Tri Methyl Butoxide (CTAB) on the size and morphology of the nanoparticles were studied. Characterization techniques such as X-ray diffraction (XRD), Fourier Transform-Infrared spectroscopy (FT-IR), Photoluminescence (PL) Field Emission Scanning Electron Microscopy (FE-SEM), Energy Dispersive Spectroscopy (EDS) and Transmission Electron Microscopy (TEM) were used to analyse the prepared nanoparticles for their physical, structural and optical properties. The characterization studies reveal that the synthesized PbO nanoparticles had well defined crystalline structure and sizes in the range of 25 nm to 36 nm for capping agents used and 40 nm for pure PbO nanoparticles.

  3. Acidizing of Sandstone Reservoirs Using HF and Organic Acids 

    E-Print Network [OSTI]

    Yang, Fei

    2012-10-19

    Mud acid, which is composed of HCl and HF, is commonly used to remove the formation damage in sandstone reservoirs. However, many problems are associated with HCl, especially at high temperatures. Formic-HF acids have served as an alternative...

  4. Feather lead concentrations and (207)Pb/(206)Pb ratios reveal lead exposure history of California Condors (Gymnogyps californianus).

    E-Print Network [OSTI]

    2010-01-01

    A. R. Stable isotope labeling of lead compartments inrats with ultralow lead concentrations. Environ. Res. 1992,Royle, J. A. ; Smith, M. R. Lead poisoning in captive Andean

  5. Properly engineer lead paint removal projects

    SciTech Connect (OSTI)

    Kaelin, A.B.

    1996-01-01

    Deciding how to mitigate the hazards during lead paint removal is complex and requires consideration of many variables. Assessment of public health risk, environmental impact, and emissions potential of the operations must be considered. Additionally, the removal technique, containment system, and monitoring criteria must be developed. This article presents an integrated approach to identifying lead hazards, assessing risks to workers, the environment, and the public, developing the appropriate maintenance strategy, and selecting paint removal and containment systems. Also considered are guidelines for selecting a third party to design the overall project. This approach is based on a decision path that provides criteria for project assessment in an orderly fashion. The design of lead paint management projects in industrial applications requires consideration of the variables shown in the decision path.

  6. Reactive Distillation for Esterification of Bio-based Organic Acids

    SciTech Connect (OSTI)

    Fields, Nathan; Miller, Dennis J.; Asthana, Navinchandra S.; Kolah, Aspi K.; Vu, Dung; Lira, Carl T.

    2008-09-23

    The following is the final report of the three year research program to convert organic acids to their ethyl esters using reactive distillation. This report details the complete technical activities of research completed at Michigan State University for the period of October 1, 2003 to September 30, 2006, covering both reactive distillation research and development and the underlying thermodynamic and kinetic data required for successful and rigorous design of reactive distillation esterification processes. Specifically, this project has led to the development of economical, technically viable processes for ethyl lactate, triethyl citrate and diethyl succinate production, and on a larger scale has added to the overall body of knowledge on applying fermentation based organic acids as platform chemicals in the emerging biorefinery. Organic acid esters constitute an attractive class of biorenewable chemicals that are made from corn or other renewable biomass carbohydrate feedstocks and replace analogous petroleum-based compounds, thus lessening U.S. dependence on foreign petroleum and enhancing overall biorefinery viability through production of value-added chemicals in parallel with biofuels production. Further, many of these ester products are candidates for fuel (particularly biodiesel) components, and thus will serve dual roles as both industrial chemicals and fuel enhancers in the emerging bioeconomy. The technical report from MSU is organized around the ethyl esters of four important biorenewables-based acids: lactic acid, citric acid, succinic acid, and propionic acid. Literature background on esterification and reactive distillation has been provided in Section One. Work on lactic acid is covered in Sections Two through Five, citric acid esterification in Sections Six and Seven, succinic acid in Section Eight, and propionic acid in Section Nine. Section Ten covers modeling of ester and organic acid vapor pressure properties using the SPEAD (Step Potential Equilibrium and Dynamics) method.

  7. Asthmatic responses to airborne acid aerosols

    SciTech Connect (OSTI)

    Ostro, B.D.; Lipsett, M.J.; Wiener, M.B.; Selner, J.C. )

    1991-06-01

    Controlled exposure studies suggest that asthmatics may be more sensitive to the respiratory effects of acidic aerosols than individuals without asthma. This study investigates whether acidic aerosols and other air pollutants are associated with respiratory symptoms in free-living asthmatics. Daily concentrations of hydrogen ion (H+), nitric acid, fine particulates, sulfates and nitrates were obtained during an intensive air monitoring effort in Denver, Colorado, in the winter of 1987-88. A panel of 207 asthmatics recorded respiratory symptoms, frequency of medication use, and related information in daily diaries. We used a multiple regression time-series model to analyze which air pollutants, if any, were associated with health outcomes reported by study participants. Airborne H+ was found to be significantly associated with several indicators of asthma status, including moderate or severe cough and shortness of breath. Cough was also associated with fine particulates, and shortness of breath with sulfates. Incorporating the participants' time spent outside and exercise intensity into the daily measure of exposure strengthened the association between these pollutants and asthmatic symptoms. Nitric acid and nitrates were not significantly associated with any respiratory symptom analyzed. In this population of asthmatics, several outdoor air pollutants, particularly airborne acidity, were associated with daily respiratory symptoms.

  8. Cytotoxicity of lead on oligodendroglia, astroglia, and meningeal fibroblasts in culture: effects on viability and glycerolphosphate dehydrogenase activity 

    E-Print Network [OSTI]

    Wu, Jo-Nan

    1986-01-01

    into acid-precipitable proteins. The percentages of astroglia and fibroblaste excluding dye were unaffected by lead acetate, whereas the percentage of oligodendroglia excluding dye decreased significantly (p( 0. 01) after exposure to 100 uM lead acetate... cells were reseeded in culture dishes (corresponding to postnatal day 13-16), culture medium was removed, and the medium containing Pb acetate (MCB, Gibbstown, NJ) was added into culture dishes. Three concentrations of Pb acetate were tested: 1 uM...

  9. Are You Pregnant? Prevent Lead Poisoning. Start Now.

    E-Print Network [OSTI]

    Are You Pregnant? Prevent Lead Poisoning. Start Now. Lead poisoning is caused by breathing to keep your baby safe from lead poisoning. Here's what you can do: 1 Watch out for lead in your home

  10. Nonaqueous solution synthesis process for preparing oxide powders of lead zirconate titanate and related materials

    DOE Patents [OSTI]

    Voigt, James A. (Corrales, NM); Sipola, Diana L. (Albuquerque, NM); Tuttle, Bruce A. (Albuquerque, NM); Anderson, Mark T. (Woodbury, MN)

    1999-01-01

    A process for producing powders of perovskite-type compounds which comprises mixing a metal alkoxide solution with a lead acetate solution to form a homogeneous, clear metal solution, adding an oxalic acid/n-propanol solution to this metal solution to form an easily filterable, free-flowing precursor powder and then calcining this powder. This process provides fine perovskite-phase powders with ferroelectric properties which are particularly useful in a variety of electronic applications.

  11. Nonaqueous solution synthesis process for preparing oxide powders of lead zirconate titanate and related materials

    DOE Patents [OSTI]

    Voigt, J.A.; Sipola, D.L.; Tuttle, B.A.; Anderson, M.T.

    1999-06-01

    A process is disclosed for producing powders of perovskite-type compounds which comprises mixing a metal alkoxide solution with a lead acetate solution to form a homogeneous, clear metal solution, adding an oxalic acid/n-propanol solution to this metal solution to form an easily filterable, free-flowing precursor powder and then calcining this powder. This process provides fine perovskite-phase powders with ferroelectric properties which are particularly useful in a variety of electronic applications. 4 figs.

  12. Acid Placement in Acid Jetting Treatments in Long Horizontal Wells 

    E-Print Network [OSTI]

    Sasongko, Hari

    2012-07-16

    In the Middle East, extended reach horizontal wells (on the order of 25,000 feet of horizontal displacement) are commonly acid stimulated by jetting acid out of drill pipe. The acid is jetted onto the face of the openhole wellbore as the drill pipe...

  13. Acid placement and coverage in the acid jetting process 

    E-Print Network [OSTI]

    Mikhailov, Miroslav I.

    2009-05-15

    Many open-hole acid treatments are being conducted by pumping acid through jetting ports placed at the end of coiled tubing or drill pipe. The filter-cake on the bore-hole is broken by the jet; the acid-soluble material is dissolved, creating...

  14. Gluon saturation and Feynman scaling in leading neutron production

    E-Print Network [OSTI]

    Carvalho, F; Spiering, D; Navarra, F S

    2015-01-01

    In this paper we extend the color dipole formalism to the study of leading neutron production in $e + p \\rightarrow e + n + X$ collisions at high energies and estimate the related observables, which were measured at HERA and may be analysed in future electron-proton ($ep$) colliders. In particular, we calculate the Feynman $x_F$ distribution of leading neutrons, which is expressed in terms of the pion flux and the photon-pion total cross section. In the color dipole formalism, the photon-pion cross section is described in terms of the dipole-pion scattering amplitude, which contains information about the QCD dynamics at high energies and gluon saturation effects. We consider different models for the scattering amplitude, which have been used to describe the inclusive and diffractive $ep$ HERA data. Moreover, the model dependence of our predictions with the description of the pion flux is analysed in detail. We show that the recently released H1 leading neutron spectra can be reproduced using the color dipole ...

  15. Worker lead exposures during renovation of homes with lead-based paint

    SciTech Connect (OSTI)

    Sussell, A.; Gittleman, J.; Singal, M.

    1998-11-01

    The authors evaluated lead exposures among full-time home renovators and part-time volunteers working primarily in pre-1960 homes with lead-based paint. Potentially hazardous lead exposures were measured during two tasks: exterior dry scraping and wet scraping. Maximum exposures were 120 and 63 {micro}g/m{sup 3}, respectively. Exposures during other tasks, including general repair, weatherization, exterior scraping/painting, window replacement, demolition, and plumbing, were low, as were all 13 full-shift personal exposures. Blood lead levels for full-time workers ranged up to 17.5 {micro}g/dl, with a GM of 5.2 {micro}g/dl; the GM for volunteers was 3.2 {micro}g/dl. All of the paint samples collected from work surfaces had detectable amounts of lead, with 65% of the work surfaces tested having an average lead concentration of >0.5%.

  16. Chemical sensor development leading to an glucose detection method

    E-Print Network [OSTI]

    Caballero, Jonathan Bano

    2008-01-01

    Overetching leads to undercutting of the oxide below thecan lead to inconsistencies in the gate oxide. Figure 2-11 –

  17. Childhood Lead Poisoning Prevention Program Community Awareness Pilot

    E-Print Network [OSTI]

    Childhood Lead Poisoning Prevention Program Community Awareness Pilot #12;1 THE GOOD NEWS- Exposure to Lead is Preventable Lead Poisoning Is a REAL Problem; Did You Know? Lead is a highly toxic substance the effects of lead poisoning, but lead poisoning is much more frequent in children than in adults. For many

  18. Supplemental Information Mechanisms Leading to Oligomers and SOA through

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    : Insights from OH Radical Oxidation of Acetic Acid Y. Tan1* , Y. B. Lim1 , K. E. Altieri2 , S. P. Seitzinger-mail: turpin@envsci.rutgers.edu #12;2 0 2 4 6 20 M acetic acid + OH 0 5 10 15 20 100 M acetic acid + OH Concentration(M) 0 50 100 150 200 250 300 0 30 60 90 120 1 mM acetic acid + OH Time (min) Fig. S1. Oxalic acid

  19. River Sediment Analysis by Slurry Sampling FAAS: Determination of Copper, Zinc and Lead Flvia L. Alves, Solange Cadore, Wilson F. Jardim and Marco A. Z. Arruda*

    E-Print Network [OSTI]

    Jardim, Wilson de Figueiredo

    Article River Sediment Analysis by Slurry Sampling FAAS: Determination of Copper, Zinc and Lead sediment analysis was developed. Using this procedure, copper, zinc and lead were determined. The influence of the nitric acid concentration on the slurry preparation, as well as the sediment particle size

  20. Reaction of Simple Organic Acid with Calcite: Effect of Reversible Reactions 

    E-Print Network [OSTI]

    Punase, Abhishek

    2015-04-28

    as acetic acid, formic acid, lactic acid, etc.), it was observed that the dissolution rates estimated by the different models gave distinct results and varied in two order of magnitudes from each other. This large variation can be attributed to the fact...

  1. NUMERICAL SIMULATIONS OF LONG TERM UNSATURATED FLOW AND ACID MINE DRAINAGE AT WASTE ROCK PILES

    E-Print Network [OSTI]

    Aubertin, Michel

    NUMERICAL SIMULATIONS OF LONG TERM UNSATURATED FLOW AND ACID MINE DRAINAGE AT WASTE ROCK PILES Omar present a numerical modeling study of unsaturated water flow and acid mine drainage in idealized (but of oxygen diffusion and acid mine drainage through the waste rock piles showed that oxygen is generally

  2. A NEW NEURAL NETWORK FOR -TURN PREDICTION: THE EFFECT OF SITE-SPECIFIC AMINO ACID PREFERENCE

    E-Print Network [OSTI]

    Wong, Limsoon

    , a property ignored in previous training models. We showed that the statistics of amino acid preference occurring in protein structures. Based on the number of their constituent amino acid residues, tight turns of four consecutive amino acid residues, the prediction for -turn can be performed based

  3. Lead-203 as a label for radioimaging

    DOE Patents [OSTI]

    Srivastava, Suresh C. (Setauket, NY); Meinken, George E. (Middle Island, NY)

    1990-01-01

    A radiopharmaceutical composition comprising a radioactive isotope of lead (Pb-203) in combination with a pharmaceutical or an antibody or antibody fragment and a bifunctional chelating agent. These compositions are especially useful in the imaging and diagnosis of tumors and tumor metastases.

  4. Leading Edge Bacterial Genomics and Pathogen Evolution

    E-Print Network [OSTI]

    Mekalanos, John

    Leading Edge Review Bacterial Genomics and Pathogen Evolution David M. Raskin,1 Rekha Seshadri,2 Medical School, Boston, MA 02115, USA 2 The Institute for Genomic Research, 9712 Medical Center Drive.02.002 The availability of hundreds of bacterial genome sequences has altered the study of bacte- rial pathogenesis

  5. LEADING THE WAY September 5, 2012

    E-Print Network [OSTI]

    , dual-enrollment program Focused on students successfully completing their degrees Students benefit from,000 into these efforts 16 #12;Focused on Engaged Learning Activities INTERNSHIPS RESEARCH HONORS Developed a programMNOA LEADING THE WAY September 5, 2012 1 #12;HGI: CHALLENGES FOR STUDENT SUCCESS 2 #12;"Leavers

  6. study engineering in English at a leading

    E-Print Network [OSTI]

    Doty, Sharon Lafferty

    in Aero-mechanics is jointly run by 3 leading French Engineering Schools (Grandes Ecoles): ENAC, ENSICA in the middle of French style education: // a different way to tackle problems (the big picture, from theory in small teams in one of our labs Airbus380­Airbus380assemblyplant EXE DOC APPEL SPRING SEM. 9/03/07 9

  7. Hanford Leads the Way for Greener Classrooms

    Broader source: Energy.gov [DOE]

    EM’s Richland Operations Office and contractor Mission Support Alliance (MSA) are leading the way to greener classrooms by developing a totally paperless class at the HAMMER Federal Training Facility at the Hanford site. MSA manages HAMMER on behalf of EM.

  8. Conformal constraints for anomalous dimensions of leading twist operators

    E-Print Network [OSTI]

    A. N. Manashov; M. Strohmaier

    2015-03-16

    Leading-twist operators have a remarkable property that their divergence vanishes in a free theory. Recently it was suggested that this property can be used for an alternative technique to calculate anomalous dimensions of leading-twist operators and allows one to gain one order in perturbation theory so that, i.e., two-loop anomalous dimensions can be calculated from one-loop Feynman diagrams, etc. In this work we study feasibility of this program on a toy-model example of the $\\varphi^3$ theory in six dimensions. Our conclusion is that this approach is valid, although it does not seem to present considerable technical simplifications as compared to the standard technique. It does provide one, however, with a very nontrivial check of the calculation as the structure of the contributions is very different.

  9. Carboxylic acid sorption regeneration process

    DOE Patents [OSTI]

    King, C.J.; Poole, L.J.

    1995-05-02

    Carboxylic acids are sorbed from aqueous feedstocks into an organic liquid phase or onto a solid adsorbent. The acids are freed from the sorbent phase by treating it with aqueous alkylamine thus forming an alkylammonium carboxylate which is dewatered and decomposed to the desired carboxylic acid and the alkylamine. 10 figs.

  10. Pantothenic acid biosynthesis in zymomonas

    DOE Patents [OSTI]

    Tao, Luan; Tomb, Jean-Francois; Viitanen, Paul V.

    2014-07-01

    Zymomonas is unable to synthesize pantothenic acid and requires this essential vitamin in growth medium. Zymomonas strains transformed with an operon for expression of 2-dehydropantoate reductase and aspartate 1-decarboxylase were able to grow in medium lacking pantothenic acid. These strains may be used for ethanol production without pantothenic acid supplementation in seed culture and fermentation media.

  11. Recent developments in lead based cleanup criteria at hazardous waste sites

    SciTech Connect (OSTI)

    Ahlert, W.K.; Williams, B.C. [Lawler, Matusky, & Skelly Engineers, Pearl River, NY (United States)

    1995-12-31

    This paper briefly compares the requirements and application of two guidance documents issued by the US Environmental Protection Agency (US EPA) to address soil lead contamination. The Office of Solid Waste & Emergency Response (OSWER) Revised Interim Soil Lead Guidance recommends a risk-based screening level for lead in soil for residential use and the use of the Integrated Exposure Uptake Biokinetics Model to evaluate potential risks to humans from environmental exposure to lead at hazardous waste sites in residential settings. The Office of Prevention, Pesticides, and Toxic Substances (OPPTS) issued guidelines to reduce lead-based paint hazards, including lead contaminated soils in residential areas. Both of these guidance documents identify 400 ppm as the level in soil below which no further action is necessary. However, the OPPTS guidance identifies concentrations between 400-5000 ppm as the levels in soil which necessitate only interim controls. In the past, the final record of decision issued by the US EPA for most Superfund sites, where the primary contaminant of concern was lead, used the OSWER guidance to determine the final lead cleanup level for the site. In many cases the RODs issued by EPA required the removal of lead contaminated soils that contained levels of lead between 400-5000 ppm. Even though the OPPTS guidance is applicable to residential areas where soils have been contaminanted with lead as a result of LBP, if applied to hazardous waste sites many remedial actions required by EPA in the past would not be necessary under this guidance.

  12. Estimating the Lead Time Distribution of Priority Lots in a Semiconductor Factory

    E-Print Network [OSTI]

    Bonvik, Asbjoern M.

    We consider the lead time of priority lots in a semiconductor factory. The main cause of delays is waiting for repairs of failed machines, and the failures are mainly caused by power disturbances. This can be modeled as ...

  13. Extending the Matrix Element Method to Next-to-Leading Order

    E-Print Network [OSTI]

    John M. Campbell; Walter T. Giele; Ciaran Williams

    2012-05-15

    We discuss the extension of the matrix element method (MEM) to Next-to-Leading Order (NLO) in perturbation theory. In particular we focus on the production of a Standard Model Higgs boson which decays into four leptons.

  14. Boundary element simulation of oscillating foil with leading-edge separation

    E-Print Network [OSTI]

    Dong, Xiaoxia, S.M. Massachusetts Institute of Technology

    2007-01-01

    In this thesis, we develop a numerical model to account for the leading-edge separation for the boundary element simulation of the oscillating foil with potential flow assumption. Similar to the trailing-edge separation, ...

  15. Logistics Network Design with Differentiated Delivery Lead-Time: Benefits and Insights

    E-Print Network [OSTI]

    Cheong, Michelle L.F.

    Most logistics network design models assume exogenous customer demand that is independent of the service time or level. This paper examines the benefits of segmenting demand according to lead-time sensitivity of customers. ...

  16. Composition for nucleic acid sequencing

    DOE Patents [OSTI]

    Korlach, Jonas (Ithaca, NY); Webb, Watt W. (Ithaca, NY); Levene, Michael (Ithaca, NY); Turner, Stephen (Ithaca, NY); Craighead, Harold G. (Ithaca, NY); Foquet, Mathieu (Ithaca, NY)

    2008-08-26

    The present invention is directed to a method of sequencing a target nucleic acid molecule having a plurality of bases. In its principle, the temporal order of base additions during the polymerization reaction is measured on a molecule of nucleic acid, i.e. the activity of a nucleic acid polymerizing enzyme on the template nucleic acid molecule to be sequenced is followed in real time. The sequence is deduced by identifying which base is being incorporated into the growing complementary strand of the target nucleic acid by the catalytic activity of the nucleic acid polymerizing enzyme at each step in the sequence of base additions. A polymerase on the target nucleic acid molecule complex is provided in a position suitable to move along the target nucleic acid molecule and extend the oligonucleotide primer at an active site. A plurality of labelled types of nucleotide analogs are provided proximate to the active site, with each distinguishable type of nucleotide analog being complementary to a different nucleotide in the target nucleic acid sequence. The growing nucleic acid strand is extended by using the polymerase to add a nucleotide analog to the nucleic acid strand at the active site, where the nucleotide analog being added is complementary to the nucleotide of the target nucleic acid at the active site. The nucleotide analog added to the oligonucleotide primer as a result of the polymerizing step is identified. The steps of providing labelled nucleotide analogs, polymerizing the growing nucleic acid strand, and identifying the added nucleotide analog are repeated so that the nucleic acid strand is further extended and the sequence of the target nucleic acid is determined.

  17. Invasive cleavage of nucleic acids

    DOE Patents [OSTI]

    Prudent, James R. (Madison, WI); Hall, Jeff G. (Madison, WI); Lyamichev, Victor I. (Madison, WI); Brow, Mary Ann D. (Madison, WI); Dahlberg, James E. (Madison, WI)

    2002-01-01

    The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

  18. Lead magnesium niobate actuator for micropositioning

    DOE Patents [OSTI]

    Swift, Charles D. (Livermore, CA); Bergum, John W. (Concord, CA)

    1994-01-01

    An improved lead magnesium niobate actuator is disclosed comprising a cylindrical lead magnesium niobate crystal stack mounted in a cylindrical casing wherein a bias means, such as one or more belleville washers, is located between one end of the crystal stack and a partially closed end of the casing; and adjustment means are provided which bear against the opposite end of the crystal stack, whereby an adjustable compressive force is constantly applied against the crystal stack, whether the crystal stack is actuated in an extended position, or is in an unactuated contracted position. In a preferred embodiment, cooling ports are provided for the circulation of coolant in the actuator to cool the crystal stack, and provision is made for removal and replacement of the crystal stack without disconnecting the actuator from the external device being actuated.

  19. IMPROVED PROCESSES TO REMOVE NAPHTHENIC ACIDS

    SciTech Connect (OSTI)

    Aihua Zhang; Qisheng Ma; Kangshi Wang, William A. Goddard, Yongchun Tang

    2005-05-05

    In the second year of this project, we continued our effort to develop low temperature decarboxylation catalysts and investigate the behavior of these catalysts at different reaction conditions. We conducted a large number of dynamic measurements with crude oil and model compounds to obtain the information at different reaction stages, which was scheduled as the Task2 in our work plan. We developed a novel adsorption method to remove naphthenic acid from crude oil using naturally occurring materials such as clays. Our results show promise as an industrial application. The theoretical modeling proposed several possible reaction pathways and predicted the reactivity depending on the catalysts employed. From all of these studies, we obtained more comprehensive understanding about catalytic decarboxylation and oil upgrading based on the naphthenic acid removal concept.

  20. Composition of White Lead and Paints. 

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1908-01-01

    EXPERIMENT 8TATIONS. BULLETIN NO. 114 NOVEMBER, 1908. Composition of White lead and Paints. G. S. FRAPS, PH. D,, Chemist. POSTOFFICE : COLLEGE STATION, BRAZOS COUNTY, TEXAS. AUSTIY, TEXAS: VON BOECKMANN-JONES COMPANY, PRINTERS TEXAS AGRICULTURAL EXPE...\\gricultural a M'echanicnl College, in Brazos connty. The posfofEw :>rltlrris iq College SCati Texas. Reports and bulletins are sent free upon application to the Director. TABLE OF CONTENTS . Paint Materials...

  1. Isotopic generator for bismuth-212 and lead-212 based on radium

    DOE Patents [OSTI]

    Hines, J.J.; Atcher, R.W.; Friedman, A.M.

    1985-01-30

    Disclosed are method and apparatus for providing radionuclides of bismuth-212 and lead-212. Thorium-228 and carrier solution starting material is input to a radiologically contained portion of an isotopic generator system, and radium-224 is separated from thorium-228 which is retained by a strongly basic anion exchange column. The separated radium-224 is transferred to an accessible, strongly acidic cationic exchange column. The cationic column retains the radium-224, and natural radioactive decay generates bismuth-212 and lead-212. The cationic exchange column can also be separated from the contained portion of the system and utilized without the extraordinary safety measures necessary in the contained portion. Furthermore, the cationic exchange column provides over a relatively long time period the short lived lead-212 and bismuth-212 radionuclides which are useful for a variety of medical therapies.

  2. Mass balance for lead in the California South Coast Air Basin: An update

    SciTech Connect (OSTI)

    Lankey, R.L.; Davidson, C.I.; McMichael, F.C. [Carnegie Mellon Univ., Pittsburgh, PA (United States)] [Carnegie Mellon Univ., Pittsburgh, PA (United States)

    1998-08-01

    A mass balance for lead for the year 1989 in the South Coast Air Basin has inputs to the atmosphere of 600 {+-} 190 kg/day and outputs of 580 {+-} 160 kg/day, showing rough agreement. Stationary sources are responsible for only about 5% of the total lead emissions. The bulk of the lead is emitted from vehicles using leaded gasoline (37%) and unleaded gasoline (15%), as well as from resuspension of previously deposited lead on roads (43%). Over half of the total emitted lead deposits on roads and nearby soil, while about one-third is carried out of the basin by wind. A small amount, less than 10%, is deposited on surfaces throughout the basin. These percentages are approximately the same as those in a mass balance for the same region calculated for 1972, when lead emissions from leaded gasoline were about a factor of 70 greater than leaded gas emissions in 1989. When the lead emissions re used as inputs o a simple continuously stirred flow reactor model for the basin, reasonable, agreement is obtained between calculated and measured concentrations.

  3. XRD, lead equivalent and UV-VIS properties study of Ce and Pr lead silicate glasses

    SciTech Connect (OSTI)

    Alias, Nor Hayati, E-mail: norhayati@nuclearmalaysia.gov.my; Abdullah, Wan Shafie Wan, E-mail: norhayati@nuclearmalaysia.gov.my; Isa, Norriza Mohd, E-mail: norhayati@nuclearmalaysia.gov.my; Isa, Muhammad Jamal Md, E-mail: norhayati@nuclearmalaysia.gov.my; Zali, Nurazila Mat; Abdullah, Nuhaslinda Ee [Malaysian Nuclear Agency, 43000, Bangi, Kajang, Selangor (Malaysia); Muhammad, Azali [Malaysian Society for Non-Destructive Testing (Malaysia)

    2014-02-12

    In this work, Cerium (Ce) and Praseodymium (Pr) containing lead silicate glasses were produced with 2 different molar ratios low (0.2 wt%) and high (0.4wt%). These types of glasses can satisfy the characteristics required for radiation shielding glasses and minimize the lead composition in glass. The radiation shielding properties of the synthesized glasses is explained in the form of lead equivalent study. The XRD diffraction and UV-VIS analysis were performed to observe the structural changes of the synthesis glasses at 1.5 Gy gamma radiation exposures.

  4. Lead Content of Brass Plumbing Components J Barry Maynard

    E-Print Network [OSTI]

    Maynard, J. Barry

    Lead Content of Brass Plumbing Components J Barry Maynard University of Cincinnati 2008 Water are leaded brass and hence comprise a potential source of Pb in compliance testing under the Lead and Copper be marketed as "lead free". In true no-lead brasses, Bi and Se are used in place of Pb (http

  5. Know the Facts Lead poisoning is caused by swallowing or

    E-Print Network [OSTI]

    Know the Facts Lead poisoning is caused by swallowing or breathing lead. Children under 6 years old problems.FACT Lead poisoning hurts the brain and nervous system. Some of the effects of lead poisoning may and speech · Make it hard to pay attention and learn FACT Most children get lead poisoning from paint

  6. Modelling the effects of acid deposition and climate change on soil and run-off chemistry at Risdalsheia, Norway Hydrology and Earth System Sciences, 5(3), 487498 (2001) EGS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2001-01-01

    , carbon (C) sequestration and uptake of N. Increased temperatures, on the other hand, may lead for corresponding author: j.p.mol@alterra.wag-ur.nl Abstract Elevated carbon dioxide levels, caused by anthropogenic emissions of carbon dioxide to the atmosphere, and higher temperature may lead to increased plant growth

  7. Improved Processes to Remove Naphthenic Acids

    SciTech Connect (OSTI)

    Aihua Zhang; Qisheng Ma; Kangshi Wang; Yongchun Tang; William A. Goddard

    2005-12-09

    In the past three years, we followed the work plan as we suggested in the proposal and made every efforts to fulfill the project objectives. Based on our large amount of creative and productive work, including both of experimental and theoretic aspects, we received important technical breakthrough on naphthenic acid removal process and obtained deep insight on catalytic decarboxylation chemistry. In detail, we established an integrated methodology to serve for all of the experimental and theoretical work. Our experimental investigation results in discovery of four type effective catalysts to the reaction of decarboxylation of model carboxylic acid compounds. The adsorption experiment revealed the effectiveness of several solid materials to naphthenic acid adsorption and acidity reduction of crude oil, which can be either natural minerals or synthesized materials. The test with crude oil also received promising results, which can be potentially developed into a practical process for oil industry. The theoretical work predicted several possible catalytic decarboxylation mechanisms that would govern the decarboxylation pathways depending on the type of catalysts being used. The calculation for reaction activation energy was in good agreement with our experimental measurements.

  8. Energy Policy 29 (2001) 11331143 Ethanol as a lead replacement: phasing out leaded gasoline in Africa

    E-Print Network [OSTI]

    Thomas, Valerie

    2001-01-01

    lead with ethanol using primarily their by-product molasses production include Zimbabwe, Kenya, Egypt proponents have typically focused on the benefits of ethanol in terms of greenhouse gas emissions, local

  9. Asian anthropogenic lead contamination in the North Pacific Ocean as evidenced by stable lead isotopic compositions

    E-Print Network [OSTI]

    Zurbrick, Cheryl Marie

    2014-01-01

    and North Central Pacific Ocean. Deep Sea Res. Part II Top.Lead Within the Northwest Pacific Ocean Evidenced by Leadventilation flux of the Pacific Ocean. J. Geophys. Res. 106(

  10. Non-lead hollow point bullet

    DOE Patents [OSTI]

    Vaughn, Norman L. (Knoxville, TN); Lowden, Richard A. (Clinton, TN)

    2003-04-15

    The non-lead hollow point bullet of the instant invention comprises a mixed construction slug further comprising, a monolithic metal insert having a tapered (preferred conical) hollow point tip and a tapered (preferred conical) tail protrusion, and an unsintered powdered metal composite core in tandem alignment with the insert. The core has a hollow tapered (preferred conical) cavity tip portion coupled with the tapered (preferred conical) tail protrusion on the insert. An open tip jacket envelops at least a portion of the insert and the core. The jacket is swaged at the open tip.

  11. Novel lead-iron phosphate glass

    DOE Patents [OSTI]

    Boatner, L.A.; Sales, B.C.

    1989-07-11

    The invention described and claimed in the specification relates to the discovery that effective addition of Fe[sub 2]O[sub 3] to a lead phosphate glass results in a glass having enhanced chemical durability and physical stability, and consists essentially of the glass resulting from melting a mixture consisting essentially of, in weight percent, 40--66 percent PbO, 30--55 percent P[sub 2]O[sub 5] and an effective concentration up to 12 percent Fe[sub 2]O[sub 3].

  12. Zerkle to lead LANL's Information Technology organization

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAboutXu Named| Princeton Plasma PhysicsZacharyZerkle to lead

  13. Events leading to the Manhattan Project

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAboutXuRod Hunt (208) 386-5254 Washington575MAYEvents leading to

  14. Lead Software Engineer | Princeton Plasma Physics Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and-E C H N I C A L TA L K < <CloudLead

  15. Nucleic acid detection methods

    DOE Patents [OSTI]

    Smith, C.L.; Yaar, R.; Szafranski, P.; Cantor, C.R.

    1998-05-19

    The invention relates to methods for rapidly determining the sequence and/or length a target sequence. The target sequence may be a series of known or unknown repeat sequences which are hybridized to an array of probes. The hybridized array is digested with a single-strand nuclease and free 3{prime}-hydroxyl groups extended with a nucleic acid polymerase. Nuclease cleaved heteroduplexes can be easily distinguish from nuclease uncleaved heteroduplexes by differential labeling. Probes and target can be differentially labeled with detectable labels. Matched target can be detected by cleaving resulting loops from the hybridized target and creating free 3-hydroxyl groups. These groups are recognized and extended by polymerases added into the reaction system which also adds or releases one label into solution. Analysis of the resulting products using either solid phase or solution. These methods can be used to detect characteristic nucleic acid sequences, to determine target sequence and to screen for genetic defects and disorders. Assays can be conducted on solid surfaces allowing for multiple reactions to be conducted in parallel and, if desired, automated. 18 figs.

  16. Nucleic Acid Detection Methods

    DOE Patents [OSTI]

    Smith, Cassandra L. (Boston, MA); Yaar, Ron (Brookline, MA); Szafranski, Przemyslaw (Boston, MA); Cantor, Charles R. (Boston, MA)

    1998-05-19

    The invention relates to methods for rapidly determining the sequence and/or length a target sequence. The target sequence may be a series of known or unknown repeat sequences which are hybridized to an array of probes. The hybridized array is digested with a single-strand nuclease and free 3'-hydroxyl groups extended with a nucleic acid polymerase. Nuclease cleaved heteroduplexes can be easily distinguish from nuclease uncleaved heteroduplexes by differential labeling. Probes and target can be differentially labeled with detectable labels. Matched target can be detected by cleaving resulting loops from the hybridized target and creating free 3-hydroxyl groups. These groups are recognized and extended by polymerases added into the reaction system which also adds or releases one label into solution. Analysis of the resulting products using either solid phase or solution. These methods can be used to detect characteristic nucleic acid sequences, to determine target sequence and to screen for genetic defects and disorders. Assays can be conducted on solid surfaces allowing for multiple reactions to be conducted in parallel and, if desired, automated.

  17. GEOPHYSICAL RESEARCHLETTERS, VOL. 27, NO. 8, PAGES 1179-1182,APRIL 15,2000 An investigation of the link between lead-induced

    E-Print Network [OSTI]

    Bush, John W.M.

    of the link between lead-induced thermohaline convection and arctic eddies John W. M. Bush Department developowing to lead-inducedconvection. The model predicts that, in the absenceof strong currents, lead The production of polar ice from seawater leads to the rejection of relatively saline water and so to ther

  18. Neighborhood level health risk assessment of lead paint removal activities from elevated steel bridges

    SciTech Connect (OSTI)

    Conway, R.F.; Cohen, J.T.; Bowers, T.

    1999-07-01

    The New York City Department of Transportation (NYCDOT) has adopted strict containment and monitoring procedures during paint removal activities on its bridges because of the increasing awareness about lead poisoning in children in urban environments and the potential risk of lead-based paint releases during those activities. NYCDOT owns nearly 800 bridges scattered throughout New York City. Before undertaking paint removal activities as part of its ongoing preventive maintenance and rehabilitation program, NYCDOT recently conducted an analysis to determine the public health risk posed to children living near them. The analysis the first of its kind to assess the actual public health risk potential during both routine operations and upset conditions, or accidental releases evaluated the total and incremental blood lead levels from paint removal activities on more than 5,000 children from 6 months to 6 years old. Increases in baseline blood lead levels were estimated using several models, including EPA's Integrated Exposure Uptake Biokinetic (IEUBK) Model. This model estimates steady-state blood lead levels in children, reflecting exposure to lead in multiple media over an extended period of time. Increases in lead exposure from paint removal activities in the area surrounding the bridges was estimated using EPA's Industrial Source Complex (ISC3) model to calculate ambient air and deposition levels. Potential releases from the containment and ancillary equipment used in the paint removal process were modeled based on different release scenarios ranging from routine operations to complete failure of containment. To estimate the paint removal activities' contribution to long-term exterior dust lead levels (and its related interior component), a stochastic simulation model was developed for each block in the study area.

  19. Communications and Outreach K. L. Bethea1 Team Lead/

    E-Print Network [OSTI]

    05/20/2014 Communications and Outreach K. L. Bethea1 Team Lead/ Lead Science Writer D. I. Brownlee1 Lead Science and Technology Systems K. White4, Group Leader M. Johnson4, Admin. Assistant #12;

  20. Lead Toxicity Resulting from Chronic Ingestion of Opium

    E-Print Network [OSTI]

    Jalili, Mohammad; Azizkhani, Reza

    2009-01-01

    real danger to Paloucek FP. Lead poisoning. Am Pharm. 1993;al. The decline of blood lead levels in the United States:BL, Leng CK, Hsii FP, et al. Lead Poisoning From Examination

  1. SOUTHERN CALIFORNIA EDISON Leading the Way in Electricity

    E-Print Network [OSTI]

    SOUTHERN CALIFORNIA EDISON Leading the Way in Electricity 1 Southern California Edison Leading the Way in Electricity 1 Distributed Energy Resource 21, 2013 #12;SOUTHERN CALIFORNIA EDISON Leading the Way in Electricity 2

  2. Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs widely in

    E-Print Network [OSTI]

    Maynard, J. Barry

    Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs widely in our environment. The chief sources of exposure are from (1) Lead paint ­ commonly present in house interiors (2) Leaded gasoline ­ soils along major roadways are strongly enriched in lead

  3. Collisions of deformable cells lead to collective migration

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Löber, Jakob; Ziebert, Falko; Aranson, Igor S.

    2015-03-17

    Collective migration of eukaryotic cells plays a fundamental role in tissue growth, wound healing and immune response. The motion, arising spontaneously or in response to chemical and mechanical stimuli, is also important for understanding life-threatening pathologies, such as cancer and metastasis formation. We present a phase-field model to describe the movement of many self-organized, interacting cells. The model takes into account the main mechanisms of cell motility – acto-myosin dynamics, as well as substrate-mediated and cell-cell adhesion. It predicts that collective cell migration emerges spontaneously as a result of inelastic collisions between neighboring cells: collisions lead to a mutual alignmentmore »of the cell velocities and to the formation of coherently-moving multi-cellular clusters. Small cell-to-cell adhesion, in turn, reduces the propensity for large-scale collective migration, while higher adhesion leads to the formation of moving bands. Our study provides valuable insight into biological processes associated with collective cell motility.« less

  4. Transport moments beyond the leading order

    E-Print Network [OSTI]

    Gregory Berkolaiko; Jack Kuipers

    2011-07-11

    For chaotic cavities with scattering leads attached, transport properties can be approximated in terms of the classical trajectories which enter and exit the system. With a semiclassical treatment involving fine correlations between such trajectories we develop a diagrammatic technique to calculate the moments of various transport quantities. Namely, we find the moments of the transmission and reflection eigenvalues for systems with and without time reversal symmetry. We also derive related quantities involving an energy dependence: the moments of the Wigner delay times and the density of states of chaotic Andreev billiards, where we find that the gap in the density persists when subleading corrections are included. Finally, we show how to adapt our techniques to non-linear statistics by calculating the correlation between transport moments. In each setting, the answer for the $n$-th moment is obtained for arbitrary $n$ (in the form of a moment generating function) and for up to the three leading orders in terms of the inverse channel number. Our results suggest patterns which should hold for further corrections and by matching with the low order moments available from random matrix theory we derive likely higher order generating functions.

  5. Secretary Bodman to Lead Presidential Delegation to Baku, Azerbaijan...

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

    Secretary Bodman to Lead Presidential Delegation to Baku, Azerbaijan for 2008 Energy Summit Secretary Bodman to Lead Presidential Delegation to Baku, Azerbaijan for 2008 Energy...

  6. Dow Chemical Company: Assessment Leads to Steam System Energy...

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

    Dow Chemical Company: Assessment Leads to Steam System Energy Savings in a Petrochemical Plant Dow Chemical Company: Assessment Leads to Steam System Energy Savings in a...

  7. Discovery of Weyl Semimetals May Lead to Novel Future Spintronic...

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

    Discovery of Weyl Semimetals May Lead to Novel Future Spintronic Applications Discovery of Weyl Semimetals May Lead to Novel Future Spintronic Applications Print Wednesday, 09...

  8. Volunteers Leading Technology, A Case Study: Chewonki Renewable...

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

    Volunteers Leading Technology, A Case Study: Chewonki Renewable Hydrogen Project Volunteers Leading Technology, A Case Study: Chewonki Renewable Hydrogen Project This presentation...

  9. Solar Decathlon 2015: Nation's Leading Sustainable Home Design...

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

    Nation's Leading Sustainable Home Design Competition on the Horizon Solar Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon July 13, 2015 - 2:15pm...

  10. Solar Decathlon 2015: Nation's Leading Sustainable Home Design...

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

    Solar Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon Solar Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon...

  11. Anthropogenic Lead Emissions in the Ocean: The Evolving Global Experiment

    E-Print Network [OSTI]

    Lee, Jong-Mi

    We review the current distribution of lead and lead isotopes in the ocean with regard to the evolving pattern of human emissions during the past decades and centuries.

  12. Lead Slowing Down Spectrometry Analysis of Data from Measurements...

    Office of Scientific and Technical Information (OSTI)

    Lead Slowing Down Spectrometry Analysis of Data from Measurements on Nuclear Fuel Citation Details In-Document Search Title: Lead Slowing Down Spectrometry Analysis of Data from...

  13. Energy Department to Lead Workshop on Tribal Renewable Energy...

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

    Energy Department to Lead Workshop on Tribal Renewable Energy Development in Oklahoma Energy Department to Lead Workshop on Tribal Renewable Energy Development in Oklahoma June 1,...

  14. Leading the Charge: Jana Ganion Advances Blue Lake Rancheria...

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

    Leading the Charge: Jana Ganion Advances Blue Lake Rancheria's Climate Action Agenda Leading the Charge: Jana Ganion Advances Blue Lake Rancheria's Climate Action Agenda February...

  15. Prabhat Steps In as DAS Group LeadPage

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

    Group Lead September 1, 2014 prabhat Prabhat has been named Group Lead of the Data and Analytics Services (DAS) Group at the Department of Energy's National Energy Research...

  16. Acidic gas capture by diamines

    DOE Patents [OSTI]

    Rochelle, Gary (Austin, TX); Hilliard, Marcus (Missouri City, TX)

    2011-05-10

    Compositions and methods related to the removal of acidic gas. In particular, the present disclosure relates to a composition and method for the removal of acidic gas from a gas mixture using a solvent comprising a diamine (e.g., piperazine) and carbon dioxide. One example of a method may involve a method for removing acidic gas comprising contacting a gas mixture having an acidic gas with a solvent, wherein the solvent comprises piperazine in an amount of from about 4 to about 20 moles/kg of water, and carbon dioxide in an amount of from about 0.3 to about 0.9 moles per mole of piperazine.

  17. Next-to-Leading-Order Event Generators

    E-Print Network [OSTI]

    Paolo Nason; Bryan Webber

    2012-02-06

    We review the methods developed for combining the parton shower approximation to QCD with fixed-order perturbation theory, in such a way as to achieve next-to-leading-order (NLO) accuracy for inclusive observables. This has made it possible to generate fully-simulated hadronic final states with the precision and stability of NLO calculations. We explain the underlying theory of the existing methods, MC@NLO and POWHEG, together with their similarities, differences, achievements and limitations. For illustration we mainly compare results on Higgs boson production at the LHC, with particular emphasis on the residual uncertainties arising from the different treatment of effects beyond NLO. We also briefly summarize the difference between these NLO + parton shower methods and matrix-element + parton shower matching, and current efforts to combine the two approaches.

  18. LOFT lead rod test results evaluation. [PWR

    SciTech Connect (OSTI)

    Driskell, W.B.; Tolman, E.L.

    1980-07-30

    The purpose for evaluating the LOFT Lead Rod Test (simulations of large break, loss-of-coolant accidents) data was to determine; (a) if the centerline thermocouple and fuel rod elongation sensor data show indications of the collapsed fuel rod cladding, (b) the capability of the FRAP-T5 computer code to accurately predict cladding collapse, and (c) if cladding surface thermocouples enhance fuel rod cooling. With consideration to unresolved questions on data integrity, it was concluded that: the fuel rod centerline thermocouple and elongation sensor data do show indications of the fuel rod cladding collapse; the FRAP-T5 code conservatively predicts cladding collapse; and there is an indication that cladding surface thermocouples are enhancing fuel rod cooling.

  19. Lead paint abatement -- A technological review

    SciTech Connect (OSTI)

    Draper, A.C. III; Kapuscik, D.

    1994-12-31

    Abatement of lead from various surfaces proves to be a rapidly developing industry. Removal techniques and effectiveness varies greatly with varying substrates (wood, concrete, steel, etc.) and surface configurations including interior/exterior considerations, habitability and anticipated retrofit. Numerous technologies advances, and/or adaptations of long accepted removal techniques have recently emerged. Some of the more commonly used removal procedures including vacuum blasting, chemical stripping, scarifiers, grinders, sanders, etc. will be reviewed. Specific emphasis will be placed upon mode of application, positive and negative environmental aspects, and varying emissions generated. Personnel sampling data will be discussed with respect to associated personal protective equipment impact to derive the most cost productive environmentally conscious alternatives.

  20. The utilization of tricarboxylic acid cycle acids and the uptake of succinic acid by Neurospora crassa 

    E-Print Network [OSTI]

    Gilliland, Patti Lynn

    1978-01-01

    molecules not directly involved in the TCA cycle, aspartate and glutamate, have been the subject of several investigations, primarily in relation to amino acid transport. The uptake of the dicarboxylic amino acids is fre- quently studied in conjunction... with the uptake of the structurally similar TCA cycle compounds (22, 44, 76). In 1968, Jacobson snd Metzenberg (29) reported that aspartate and glutamate uptake by N. crassa was gene-controlled. Pall (44) has described a mycelial amino acid transport system...

  1. Evaluation of lead/carbon devices for utility applications : a study for the DOE Energy Storage Program.

    SciTech Connect (OSTI)

    Walmet, Paula S.

    2009-06-01

    This report describes the results of a three-phase project that evaluated lead-based energy storage technologies for utility-scale applications and developed carbon materials to improve the performance of lead-based energy storage technologies. In Phase I, lead/carbon asymmetric capacitors were compared to other technologies that used the same or similar materials. At the end of Phase I (in 2005) it was found that lead/carbon asymmetric capacitors were not yet fully developed and optimized (cost/performance) to be a viable option for utility-scale applications. It was, however, determined that adding carbon to the negative electrode of a standard lead-acid battery showed promise for performance improvements that could be beneficial for use in utility-scale applications. In Phase II various carbon types were developed and evaluated in lead-acid batteries. Overall it was found that mesoporous activated carbon at low loadings and graphite at high loadings gave the best cycle performance in shallow PSoC cycling. Phase III studied cost/performance benefits for a specific utility application (frequency regulation) and the full details of this analysis are included as an appendix to this report.

  2. Hydrogen Bond Switching among Flavin and Amino Acids Determines the Nature of Proton-Coupled Electron Transfer in BLUF

    E-Print Network [OSTI]

    van Stokkum, Ivo

    Hydrogen Bond Switching among Flavin and Amino Acids Determines the Nature of Proton results from a hydrogen bond switch between the flavin and its surrounding amino acids that preconfigures a rearrangement of the hydrogen bond network around the flavin takes place leading to a 10-15 nm red shift

  3. Mechanism of the Acid-Catalyzed Si-O Bond Cleavage in Siloxanes and Siloxanols. A Theoretical Study

    E-Print Network [OSTI]

    Apeloig, Yitzhak

    Marek Cypryk*, and Yitzhak Apeloig Center of Molecular and Macromolecular Studies of Polish Academy. Introduction Acid-catalyzed condensation of silanol groups is the most important reaction leading considerable interest of theoreticians.5 Kinetic studies showed that in acidic media silanol condensation

  4. ANTIBODY PURIFICATION USING CAPRYLIC ACID In mildly acidic conditions, the addition of short-chain fatty acids such as caprylic

    E-Print Network [OSTI]

    Mecham, Robert

    ANTIBODY PURIFICATION USING CAPRYLIC ACID In mildly acidic conditions, the addition of short-chain fatty acids such as caprylic acid to serum will precipitate most serum proteins with the exception or ammonium sulfate precipitation, caprylic acid will yield a relatively pure antibody preparation. 1. Measure

  5. A ACID RAIN Audrey Gibson

    E-Print Network [OSTI]

    Toohey, Darin W.

    account for about 70 percent of annual SO2 emissions and 30 percent of NOx emissions in the United States acid and nitric acid. Sunlight increases the rate of most of these reactions. Electric utility plants and NOx are harmful to the lungs and can cause disease and premature death. Thursday, April 29, 2010 #12

  6. Testing for Lead Poisoning Are we testing the right kids?

    E-Print Network [OSTI]

    Testing for Lead Poisoning Are we testing the right kids? City of Atlanta 2005 September 25, 2006September 25, 2006 Ambarish Vaidyanathan, MSEnvE Forrest Staley, MUP, MPHc #12;Objective To assess lead testing of children at high risk for lead poisoning in the city of Atlanta #12;Rationale · Childhood Lead

  7. Lead Exposure Management Plan 1.0. Policy

    E-Print Network [OSTI]

    de Lijser, Peter

    Lead Exposure Management Plan 1.0. Policy CSUF has developed the Lead Exposure Management Plan to reduce occupational and environmental exposure to lead, a potent neurotoxin and carcinogen that causes considers the nature of the task involved, confirmed and presumed exposures, and the lead content

  8. Faculty of Education LEAD Teacher Candidate and Associate Handbook1

    E-Print Network [OSTI]

    Faculty of Education LEAD Teacher Candidate and Associate Handbook1 Welcome to the LEAD "Field Experience" Welcome to the LEAD field experience component of the program. Past graduates often describe Teacher/Mentors often report that the presence of LEAD teacher candidates in their classroom adds

  9. Get the lead out! removing lead-based paint on hydro plant structures

    SciTech Connect (OSTI)

    Johnson, M.L.

    1996-05-01

    This article describes a hydroblasting technology used to remove lead-based surface coatings from the steel associated with the flood gates at the Wirtz Dam. Using this technology and an advanced moisture-cured urethane coating, the Lower Colorado River Authority was able to save more than $250,000 in materials, labor, and waste disposal costs.

  10. Ultrasound in lead-bismuth eutectic

    SciTech Connect (OSTI)

    Dierckx, M.; Van Dyck, D.

    2011-07-01

    The Belgian Nuclear Research Centre (SCK.CEN) is in the process of designing MYRRHA, a new multi-purpose irradiation facility to replace the ageing BR2. MYRRHA is a fast spectrum reactor cooled with lead-bismuth eutectic (LBE). As liquid metal is opaque to visual light, ultrasonic measurement techniques are selected to fulfill essential tasks that, according to our assessment, will be demanded by licensing authorities, in particular: fuel assembly identification and localization of a lost fuel assembly. To that end, a considerable research effort at SCK.CEN is devoted to study ultrasonic propagation in LBE. As ultrasonic experiments in LBE are elaborate and expensive to set up, we are particularly interested in to what extent experiments in water can be extrapolated to LBE - one of the main focuses of this article. We describe and present results of a first experiment with this goal which shows that the signal to noise ratio is better in LBE and that we even see small diffuse reflections up to 40 deg. off normal. On the other hand, we do not see internal reflections in stainless steel objects in LBE which we do in water. Therefore, we conclude that experiments in water can be used to validate algorithms for LBE on the condition that they do not rely on internal reflections. We also present solutions to tackle the essential tasks: fuel assembly identification and lost object localization. The requirements for the ultrasonic equipment implementing these solutions are also discussed. (authors)

  11. Metabolism of Thioctic Acid in Algae

    E-Print Network [OSTI]

    Grisebach, Hans; Fuller, R.C.; Calvin, M.

    1956-01-01

    METABOLISM OF THlOCTlC ACID IN ALGAE TWO-WEEK LOAN COPY ThisMETABOLISM OF THIOCTIC ACID IN ALGAE Hans Grisebach, R. , C.METABOLISM OF THIOCTIC ACID IN ALGAE Hans Grisebach, R. C.

  12. Does gravitational collapse lead to singularities?

    E-Print Network [OSTI]

    Ernst Fischer

    2013-03-23

    According to conventional modelling by general relativity the collapse of radially symmetric gravitating objects may end in a singular state. But by inclusion of potential energy into the energy tensor, which is required to guarantee global energy conservation, the occurrence of singularities is avoided. Instead the final states of the collapse of mass concentrations of arbitrary size are nuclear matter objects, from which jets of matter can be recycled into space. The mysterious dark energy, supposed as the main constituent of the universe, may even be the potential energy of matter itself.

  13. Carbonic Acid Shows Promise in Geology, Biology

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

    The Surprising Secrets of Carbonic Acid Probing the Surprising Secrets of Carbonic Acid Berkeley Lab Study Holds Implications for Geological and Biological Processes October 23,...

  14. In vivo incorporation of unnatural amino acids

    DOE Patents [OSTI]

    Schultz, Peter G. (La Jolla, CA); Wang, Lei (San Diego, CA); Anderson, John Christopher (San Diego, CA); Chin, Jason W. (Cambridge, GB); Liu, David R. (Lexington, MA); Magliery, Thomas J. (North Haven, CT); Meggers, Eric L. (Philadelphia, PA); Mehl, Ryan Aaron (Lancaster, PA); Pastrnak, Miro (San Diego, CA); Santoro, Stephen William (Cambridge, MA); Zhang, Zhiwen (San Diego, CA)

    2012-05-08

    The invention provides methods and compositions for in vivo incorporation of unnatural amino acids. Also provided are compositions including proteins with unnatural amino acids.

  15. In vivo incorporation of unnatural amino acids

    DOE Patents [OSTI]

    Schultz, Peter (La Jolla, CA); Wang, Lei (San Diego, CA); Anderson, John Christopher (San Diego, CA); Chin, Jason W. (Cambridge, GB); Liu, David R. (Lexington, MA); Magliery, Thomas J. (North Haven, CT); Meggers, Eric (Philadelphia, PA); Mehl, Ryan Aaron (Lancaster, PA); Pastrnak, Miro (San Diego, CA); Santoro, Stephen William (Cambridge, MA); Zhang, Zhiwen (San Diego, CA)

    2011-03-29

    The invention provides methods and compositions for in vivo incorporation of unnatural amino acids. Also provided are compositions including proteins with unnatural amino acids.

  16. In vivo incorporation of unnatural amino acids

    DOE Patents [OSTI]

    Schultz, Peter (La Jolla, CA); Wang, Lei (San Diego, CA); Anderson, John Christopher (San Diego, CA); Chin, Jason W. (Cambridge, GB); Liu, David R. (Lexington, MA); Magliery, Thomas J. (North Haven, CT); Meggers, Eric (Philadelphia, PA); Mehl, Ryan Aaron (Lancaster, PA); Pastrnak, Miro (San Diego, CA); Santoro, Steven William (Cambridge, MA); Zhang, Zhiwen (San Diego, CA)

    2008-05-06

    The invention provides methods and compositions for in vivo incorporation of unnatural amino acids. Also provided are compositions including proteins with unnatural amino acids.

  17. In vivo incorporation of unnatural amino acids

    DOE Patents [OSTI]

    Schultz, Peter G. (La Jolla, CA); Wang, Lei (San Diego, CA); Anderson, John Christopher (San Diego, CA); Chin, Jason W. (Cambridge, GB); Liu, David R. (Lexington, MA); Magliery, Thomas J. (North Haven, CT); Meggers, Eric L. (Philadelphia, PA); Mehl, Ryan Aaron (Lancaster, PA); Pastrnak, Miro (San Diego, CA); Santoro, Stephen William (Cambridge, MA); Zhang, Zhiwen (San Diego, CA)

    2012-02-14

    The invention provides methods and compositions for in vivo incorporation of unnatural amino acids. Also provided are compositions including proteins with unnatural amino acids.

  18. In vivo incorporation of unnatural amino acids

    DOE Patents [OSTI]

    Schultz, Peter G. (La Jolla, CA); Wang, Lei (San Diego, CA); Anderson, John Christopher (San Diego, CA); Chin, Jason W. (Cambridge, GB); Liu, David R. (Lexington, MA); Magliery, Thomas J. (North Haven, CT); Meggers, Eric L. (Philadelphia, PA); Mehl, Ryan Aaron (Lancaster, PA); Pastrnak, Miro (San Diego, CA); Santoro, Stephen William (Cambridge, MA); Zhang, Zhiwen (San Diego, CA)

    2011-10-04

    The invention provides methods and compositions for in vivo incorporation of unnatural amino acids. Also provided are compositions including proteins with unnatural amino acids.

  19. In vivo incorporation of unnatural amino acids

    DOE Patents [OSTI]

    Schultz, Peter (La Jolla, CA); Wang, Lei (San Diego, CA); Anderson, John Christopher (San Diego, CA); Chin, Jason W. (Cambridge, GB); Liu, David R. (Lexington, MA); Magliery, Thomas J. (North Haven, CT); Meggers, Eric (Philadelphia, PA); Mehl, Ryan Aaron (Lancaster, PA); Pastrnak, Miro (San Diego, CA)

    2009-12-29

    The invention provides methods and compositions for in vivo incorporation of unnatural amino acids. Also provided are compositions including proteins with unnatural amino acids

  20. QCD analysis and effective temperature of direct photons in lead-lead collisions at the LHC

    E-Print Network [OSTI]

    M. Klasen; C. Klein-Bösing; F. König; J. P. Wessels

    2014-09-11

    We present a systematic theoretical analysis of the ALICE measurement of low-$p_T$ direct-photon production in central lead-lead collisions at the LHC with a centre-of-mass energy of $\\sqrt{s_{NN}}=2.76$ TeV. Using next-to-leading order of perturbative QCD, we compute the relative contributions to prompt-photon production from different initial and final states and the theoretical uncertainties coming from independent variations of the renormalisation and factorisation scales, the nuclear parton densities and the fragmentation functions. Based on different fits to the unsubtracted and prompt-photon subtracted ALICE data, we consistently find an exponential, possibly thermal, photon spectrum from the quark-gluon plasma (or hot medium) with slope $T=304\\pm 58$ MeV and $309\\pm64$ MeV at $p_T\\in[0.8;2.2]$ GeV and $p_T\\in[1.5;3.5]$ GeV as well as a power-law ($p_T^{-4}$) behavior for $p_T>4$ GeV as predicted by QCD hard scattering.

  1. Evidence for the incorporation of lead into barite from waste rock pile materials

    E-Print Network [OSTI]

    COURTIN-NOMADE, ALEXANDRA

    2009-01-01

    waste rock associated with acid drainage at the Penn Mine,in urban runoff, acid mine drainage, and contaminatedof waters affected by acid mine drainage and nonaffected

  2. Controlling acid rain : policy issues

    E-Print Network [OSTI]

    Fay, James A.

    1983-01-01

    The policy and regulatory ramifications of U.S. acid rain control programs are examined; particularly, the alternative of a receptor-oriented strategy as constrasted to emission-oriented proposals (e.g., the Mitchell bill) ...

  3. Nitrate and Prussic Acid Poisoning 

    E-Print Network [OSTI]

    Stichler, Charles; Reagor, John C.

    2001-09-05

    Nitrate and prussic acid poisoning in cattle are noninfectious conditions that can kill livestock. This publication explains the causes and symptoms of these conditions as well as preventive measures and sampling and testing steps....

  4. Seasonalepisodic control of acid deposition

    E-Print Network [OSTI]

    Fay, James A.

    1988-01-01

    This report contains the climatological, technical and economic factors for episodic and seasonal control of emissions in existing power plants. Analyzing a large data set of acid deposition for the years 1982-85, we find ...

  5. Phosphonic acid based exchange resins

    DOE Patents [OSTI]

    Horwitz, E.P.; Alexandratos, S.D.; Gatrone, R.C.; Chiarizia, R.

    1995-09-12

    An ion exchange resin is described for extracting metal ions from a liquid waste stream. An ion exchange resin is prepared by copolymerizing a vinylidene diphosphonic acid with styrene, acrylonitrile and divinylbenzene. 10 figs.

  6. Phosphonic acid based exchange resins

    DOE Patents [OSTI]

    Horwitz, E. Philip (Naperville, IL); Alexandratos, Spiro D. (Knoxville, TN); Gatrone, Ralph C. (Naperville, IL); Chiarizia, Ronato (Oak Park, IL)

    1995-01-01

    An ion exchange resin for extracting metal ions from a liquid waste stream. An ion exchange resin is prepared by copolymerizing a vinylidene diphosphonic acid with styrene, acrylonitrile and divinylbenzene.

  7. OCRWM Selects Sandia as Lead Laboratory | Department of Energy

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

    OCRWM Selects Sandia as Lead Laboratory OCRWM Selects Sandia as Lead Laboratory January 18, 2006 - 10:45am Addthis Also reserves building at Idaho National Laboratory as future...

  8. New Eligibility Guidelines Lead to Increase in LM's EEOICPA Requests...

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

    New Eligibility Guidelines Lead to Increase in LM's EEOICPA Requests for FY 2014 New Eligibility Guidelines Lead to Increase in LM's EEOICPA Requests for FY 2014 January 14, 2015 -...

  9. Dayrl Briggs Task Leader/Lead Cleanroom Engineer

    E-Print Network [OSTI]

    Pennycook, Steve

    Dayrl Briggs Task Leader/Lead Cleanroom Engineer Nanofabrication Research Laboratory Center Experience: 2006­Present Task Leader, Lead Cleanroom Engineer, Lab Space Manager Center for Nanophase sensitivity. Professional Activities 1. Cleanroom Technical Operations · Manage the daily operation of the NRL

  10. Systems Engineering Leading Indicators Guide, Version 1.0

    E-Print Network [OSTI]

    Lean Advancement Initiative

    2013-10-31

    The Systems Engineering Leading Indicators guide set reflects the initial subset of possible indicators that were considered to be the highest priority for evaluating effectiveness before the fact. A leading indicator is ...

  11. A Study of Lead Ingot Cargoes from Ancient Mediterranean Shipwrecks 

    E-Print Network [OSTI]

    Brown, Heather Gail

    2011-10-21

    Lead is often relegated to a footnote or sidebar in the study of ancient metals. However, the hundreds of lead ingots discovered in underwater sites over the past half-century have attested to the widespread production and ...

  12. Ames Laboratory to Lead New Research Effort to Address Shortages...

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

    Ames Laboratory to Lead New Research Effort to Address Shortages in Rare Earth and Other Critical Materials Ames Laboratory to Lead New Research Effort to Address Shortages in Rare...

  13. Distributed Wind Market Report: Small Turbines Lead to Big Growth...

    Energy Savers [EERE]

    Distributed Wind Market Report: Small Turbines Lead to Big Growth in Exports Distributed Wind Market Report: Small Turbines Lead to Big Growth in Exports August 18, 2014 - 12:13pm...

  14. Solar Decathlon Team Leading the Way Toward Sustainable Living...

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

    Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the Wake of Disasters Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the Wake of...

  15. Spotlight on Rutland County, Vermont: How Local Ties Lead to...

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

    Rutland County, Vermont: How Local Ties Lead to Local Wins Spotlight on Rutland County, Vermont: How Local Ties Lead to Local Wins Spotlight on Rutland County, Vermont: How Local...

  16. Leading by Example on Climate Change: Our New Federal Sustainability...

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

    Leading by Example on Climate Change: Our New Federal Sustainability Plan Leading by Example on Climate Change: Our New Federal Sustainability Plan March 19, 2015 - 3:15pm Addthis...

  17. Fatal pediatric poisoning from leaded paint--Wisconsin, 1990

    SciTech Connect (OSTI)

    Not Available

    1991-03-29

    Although fatal lead poisoning among children occurs rarely in the United States, it represents a medical and public health emergency. This report summarizes the investigation of a child who died from poisoning associated with ingestion of lead-based paint.

  18. Title: Early Warning of Network Catastrophes Lead Laboratory: ITL

    E-Print Network [OSTI]

    1 Title: Early Warning of Network Catastrophes Lead Laboratory: ITL Proposal Champions: Kevin Mills, and content distribution networks, in which interactions among millions of components lead to dynamic global drive systems from normal operating ranges to congested states, leading to widespread outages

  19. The Global Anthropogenic Lead Experiment Earth, Atmospheric and Planetary Sciences

    E-Print Network [OSTI]

    Einat, Aharonov

    The Global Anthropogenic Lead Experiment Ed Boyle Earth, Atmospheric and Planetary Sciences Reuer Rick Kayser Boyle Lab, arriving in Rio at the end of EN 367 #12;The Global Anthropogenic Lead Experiment · Lead is a volatile element and it is emitted by high temperature industrial activities (smelting

  20. GUIDELINES FOR THE IDENTIFICATION AND MANAGEMENT OF LEAD EXPOSURE IN

    E-Print Network [OSTI]

    GUIDELINES FOR THE IDENTIFICATION AND MANAGEMENT OF LEAD EXPOSURE IN PREGNANT AND LACTATING WOMEN;GUIDELINES FOR THE IDENTIFICATION AND MANAGEMENT OF LEAD EXPOSURE IN PREGNANT AND LACTATING WOMEN and Disease Registry Christopher Portier, PhD Director Healthy Homes and Lead Poisoning

  1. Regional Lead Agents and County Coordinators 2011 RESPONSIBILITY NAME COUNTY

    E-Print Network [OSTI]

    Bolding, M. Chad

    #12;Regional Lead Agents and County Coordinators 2011 RESPONSIBILITY NAME COUNTY REGION 1 Regional Lead Millie Davenport HGIC County Coordinator Matt Burns Pickens County Coordinator Marty Watt Anderson County Coordinator Morris Warner Oconee REGION 2 Regional Lead Danny Howard Greenville County Coordinator

  2. Demand and Production Management with Uniform Guaranteed Lead Time

    E-Print Network [OSTI]

    Swaminathan, Jayashankar M.

    Demand and Production Management with Uniform Guaranteed Lead Time Uday S. Rao Jayashankar M Recently, innovation-oriented firms have been competing along dimensions other than price - lead time being one such dimension. Increasingly, customers are favoring lead time guarantees as a means to hedge

  3. Foliar Lead Uptake by Lettuce Exposed to Atmospheric Fallouts

    E-Print Network [OSTI]

    Mailhes, Corinne

    Foliar Lead Uptake by Lettuce Exposed to Atmospheric Fallouts G A ¨E L L E U Z U , S O P H I E S O gardens near industrial plants. The mechanisms of foliar uptake of lead by lettuce (Lactuca sativa) exposed to the atmospheric fallouts of a lead-recycling plant were studied. After43daysofexposure

  4. THE LEAD AND COPPER RULE Anne Sandvig, HDR-EES

    E-Print Network [OSTI]

    Maynard, J. Barry

    THE LEAD AND COPPER RULE Anne Sandvig, HDR-EES 2008 Historical Background The 1986 Safe Drinking Water Act required the use of "lead-free" pipes, solders, pipe fittings or plumbing fixtures in the 1986 Amendment and were required to meet "voluntary standards." The term "lead-free" was defined

  5. Lead User's theory adapted to services: Towards Service User's Toolkit

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Lead User's theory adapted to services: Towards Service User's Toolkit E. Stevens Prof under the perspective of networks and communities. Lead User's theory (LUT) focused mainly is to adapt lead user's theory and practice to the specific case of the intangible processes and services

  6. Overview of Lead Scale Formation and Solubility J. Barry Maynard

    E-Print Network [OSTI]

    Maynard, J. Barry

    Overview of Lead Scale Formation and Solubility J. Barry Maynard University of Cincinnati 2008 The response of lead source materials in premise and distribution systems to changes in water treatment. These determinations are particularly critical for lead compounds, of which there have been many reported. Knowledge

  7. Lead-Free Surface Finishes for Electronic Components

    E-Print Network [OSTI]

    Lead-Free Surface Finishes for Electronic Components: Tin Whisker Growth METALS This project degraded by the switch to lead- free technology. In particular, the state of compressive stress and the localized creep response (whisker growth) of tin-based lead-free electrodeposits are being measured

  8. Chapter 2. Assessment and Remediation of Residential Lead Exposure

    E-Print Network [OSTI]

    Chapter 2. Assessment and Remediation of Residential Lead Exposure Prepared by Thomas D. Matte, MD of Residential Lead Exposure Table 2.1. Summary of Recommendations for Assessment and Remediation of Residential Lead Exposure Make prompt and effective environmental management for children with EBLLs the highest

  9. www.bitmix.co.ui .NET DEVELOPMENT LEAD

    E-Print Network [OSTI]

    Kasparian, Azniv

    iCt www.bitmix.co.ui .NET DEVELOPMENT LEAD We are looking for motivated, positive team players. Responsibilities: - Lead development of an innovative set of services and tools in the mobile space; - Be ready to lead on all angles, including people, process, and technology; - Get the best from a true team

  10. RECORD OF DESIGNATED SUBSTANCE ASSESSMENT SUBSTANCE: LEAD (plates and Gamma

    E-Print Network [OSTI]

    Thompson, Michael

    RECORD OF DESIGNATED SUBSTANCE ASSESSMENT SUBSTANCE: LEAD (plates and Gamma Source holder) DATE Direct / Indirect Per Month / Year Lead Mechanical Indirect No change Engineering CONCLUSIONS Read the plant? Product Title: Lead Type of Container: none Size of Container: not applicable 2. Is this form

  11. High Frequency Lead/lag Relationships Empirical facts

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    High Frequency Lead/lag Relationships Empirical facts Nicolas Huth Frédéric Abergel November 28, 2011 Abstract Lead/lag relationships are an important stylized fact at high frequency. Some assets, narrow bid/ask spread, small volatility, high turnover) tend to lead smaller stocks. However, the most

  12. The Value of Lead Logistics Services Oliver Schneider1

    E-Print Network [OSTI]

    Boyer, Edmond

    The Value of Lead Logistics Services Oliver Schneider1 , André Lindner2 1 ETH Zurich, Center Schindellegi, Switzerland andre.lindner@kuehne-nagel.com Abstract. Logistics Services are one of the most was developed in a collaborative action research project with a world leading provider of lead logistics

  13. Application of the Software as a Service Model to the Control of Complex Building Systems

    E-Print Network [OSTI]

    Stadler, Michael

    2012-01-01

    Zinc-bromine flow battery (%) Heat storage (%) Chargingyears) Lead-acid battery Generic heat storage Zinc-bromineInput to Battery Electricity Load without Storage Figure 9.

  14. Getting the lead out: Citizen involvement in the Williamsburg Bridge lead paint removal project

    SciTech Connect (OSTI)

    Forker, T.R.

    1997-08-01

    This paper examines the process and results of citizen involvement in developing new environmental control and compliance procedures used by the New York City Department of Transportation (NYC DOT) for lead paint removal on the Williamsburg Bridge and other structures. As a case study of the effects of public involvement in environmental decision-making, the study identifies and discusses the factors that produced failures or successes in satisfying the citizen`s concerns about health risks and the effectiveness of the selected pollution control technology.

  15. Pyrite oxidation in saturated and Unsaturated Porous Media Flow: A Comparison of alternative mathematical modeling approaches

    E-Print Network [OSTI]

    Xu, Tianfu; White, Stephen P.; Pruess, Karsten

    2008-01-01

    is the primary source of acid drainage from mines and waste1981, Biogeochemistry of acid mine drainage and a method toR. , 1995, Modeling Acid Mine Drainage in Waste Rock Dumps,

  16. Eolian inputs of lead to the North Pacific

    SciTech Connect (OSTI)

    Jones, C.E.; Halliday, A.N.; Rea, D.K.; Owen, R.M.

    2000-04-01

    The authors evaluate the importance of natural eolian Pb to the dissolved oceanic Pb budget by measuring the isotopic composition of Pb in 35 Holocene and late Quaternary sediment samples from the North Pacific and in 10 samples of Chinese loess. When the Pacific is divided into sediments provinces based on published {var_epsilon}{sub Nd} and sedimentological data, Pb from the central North Pacific tends to be the most radiogenic and homogeneous due to the dominance of eolian Chinese loess. Lead from the marginal North Pacific and the sparsely sampled regions south of 5{degree}N are less radiogenic and more variable owing to hemipelagic inputs from various volcanic arcs and older continental crust located around the Pacific Rim. {sup 208}Pb/{sup 204}Pb ratios provide the most distinctive provenance information due to the relatively high ratios in Chinese loess. The Chinese loess samples come from 3 localities and span up to 2 Myr of time. Acetic-acid leachate, bulk loess, and loess silicate fractions were analyzed separately. Leachate Pb is considerably less radiogenic than silicate Pb. The isotopic composition of the silicate component closely matches the sediment data from the central North Pacific, confirming the dominance of eolian loess in this region. The authors divided up a suite of published hydrogenous Pb-isotope data from the Pacific Ocean according to their locations within the three independently defined sediment provinces. These data define three distinct fields differentiated primarily by their {sup 206}Pb/{sup 204}Pb ratios, which increase going form the Central to Southern to Marginal provinces. This relationship with sediment province strongly suggests that natural eolian and probably hemipelagic inputs significantly impact the seawater Pb budget. Direct support for the dominance of eolian Chinese loess in the central North Pacific dissolved Pb budget comes from the close match between loess leachate Pb and the Central Province hydrogenous Pb data. Eolian inputs are likely to dominate local seawater Pb budgets only where eolian Pb fluxes are high relative to hemipelagic Pb fluxes and where the flux of Pb carried by deep water advection is low.

  17. Acid sorption regeneration process using carbon dioxide

    DOE Patents [OSTI]

    King, C. Judson (Kensington, CA); Husson, Scott M. (Anderson, SC)

    2001-01-01

    Carboxylic acids are sorbed from aqueous feedstocks onto a solid adsorbent in the presence of carbon dioxide under pressure. The acids are freed from the sorbent phase by a suitable regeneration method, one of which is treating them with an organic alkylamine solution thus forming an alkylamine-carboxylic acid complex which thermally decomposes to the desired carboxylic acid and the alkylamine.

  18. Cluster formation probability in the trans-tin and trans-lead nuclei

    E-Print Network [OSTI]

    K. P. Santhosh; R. K. Biju; Sabina Sahadevan

    2010-05-10

    Within our fission model, the Coulomb and proximity potential model (CPPM) cluster formation probabilities are calculated for different clusters ranging from carbon to silicon for the parents in the trans-tin and trans- lead regions. It is found that in trans-tin region the 12^C, 16^O, 20^Ne and 24^Mg clusters have maximum cluster formation probability and lowest half lives as compared to other clusters. In trans-lead region the 14^C, 18, 20^O, 23^F, 24,26^Ne, 28,30^Mg and 34^Si clusters have the maximum cluster formation probability and minimum half life, which show that alpha like clusters are most probable for emission from trans-tin region while non-alpha clusters are probable from trans-lead region. These results stress the role of neutron proton symmetry and asymmetry of daughter nuclei in these two cases.

  19. CBER-DETR Nevada Coincident and Leading Employment Benchmark Revisions in Employment Data Lead to Positive News

    E-Print Network [OSTI]

    Ahmad, Sajjad

    CBER-DETR Nevada Coincident and Leading Employment Indexes1 Benchmark Revisions in Employment Data Lead to Positive News The Nevada Coincident Employment Index measures the ups and downs of the Nevada economy using an index of employment variables. The Nevada Leading Employment Index also measures the ups

  20. H e a v y o i l 1116 The Leading Edge September 2008

    E-Print Network [OSTI]

    H e a v y o i l 1116 The Leading Edge September 2008 Modeling studies of heavy oil--in between solid and fluid properties Rocks filled with heavy oil do not comply with established theories for porous media. Heavy oils demonstrate a blend of both purely viscous and purely elastic properties, also

  1. Method for production of petroselinic acid and OMEGA12 hexadecanoic acid in transgenic plants

    DOE Patents [OSTI]

    Ohlrogge, J.B.; Cahoon, E.B.; Shanklin, J.; Somerville, C.R.

    1995-07-04

    The present invention relates to a process for producing lipids containing the fatty acid, petroselinic acid, in plants. The production of petroselinic acid is accomplished by genetically transforming plants which do not normally accumulate petroselinic acid with a gene for a {omega}12 desaturase from another species which does normally accumulate petroselinic acid. 19 figs.

  2. Method for production of petroselinic acid and OMEGA12 hexadecanoic acid in transgenic plants

    DOE Patents [OSTI]

    Ohlrogge, John B. (Okemos, MI); Cahoon, Edgar B. (Lansing, MI); Shanklin, John (Upton, NY); Somerville, Christopher R. (Okemos, MI)

    1995-01-01

    The present invention relates to a process for producing lipids containing the fatty acid petroselinic acid in plants. The production of petroselinic acid is accomplished by genetically transforming plants which do not normally accumulate petroselinic acid with a gene for a .omega.12 desaturase from another species which does normally accumulate petroselinic acid.

  3. Acidizing High-Temperature Carbonate Formations Using Methanesulfonic Acid 

    E-Print Network [OSTI]

    Ortega, Alexis

    2015-03-25

    Hydrochloric acid (HCl) is the most commonly used stimulation fluid for high-temperature wells drilled in carbonate reservoirs due to its high dissolving power and low cost. However, the high corrosion rate of HCl on well tubulars could make its use...

  4. Research, development, and demonstration of lead-acid batteries for electric-vehicle propulsion. Annual report, 1981

    SciTech Connect (OSTI)

    1982-03-01

    The progress of the design and development program is detailed. Results of drop tests, characteristics tests, and life cycle tests are presented and discussed. Results of tests of mechanical agitation of the electrolyte by air bubbling and an air lift pump are reported. Work on the electrode designs and electrolyte circulation systems is reported. (WHK)

  5. Macro-ions collapse leading to hybrid bio-nanomaterials.

    SciTech Connect (OSTI)

    Achyuthan, Komandoor E.

    2009-10-01

    I used supramolecular self-assembling cyanine and the polyamine spermine binding to Escherichia coli genomic DNA as a model for DNA collapse during high throughput screening. Polyamine binding to DNA converts the normally right handed B-DNA into left handed Z-DNA conformation. Polyamine binding to DNA was inhibited by the supramolecular self-assembling cyanine. Self-assembly of cyanine upon DNA scaffold was likewise competitively inhibited by spermine as signaled by fluorescence quench from DNA-cyanine ensemble. Sequence of DNA exposure to cyanine or spermine was critical in determining the magnitude of fluorescence quench. Methanol potentiated spermine inhibition by >10-fold. The IC{sub 50} for spermine inhibition was 0.35 {+-} 0.03 {micro}M and the association constant Ka was 2.86 x 10{sup -6}M. Reversibility of the DNA-polyamine interactions was evident from quench mitigation at higher concentrations of cyanine. System flexibility was demonstrated by similar spermine interactions with {lambda}DNA. The choices and rationale regarding the polyamine, the cyanine dye as well as the remarkable effects of methanol are discussed in detail. Cyanine might be a safer alternative to the mutagenic toxin ethidium bromide for investigating DNA-drug interactions. The combined actions of polyamines and alcohols mediate DNA collapse producing hybrid bio-nanomaterials with novel signaling properties that might be useful in biosensor applications. Finally, this work will be submitted to Analytical Sciences (Japan) for publication. This journal published our earlier, related work on cyanine supramolecular self-assembly upon a variety of nucleic acid scaffolds.

  6. Apparatus and methods for monitoring the concentrations of hazardous airborne substances, especially lead

    DOE Patents [OSTI]

    Zaromb, Solomon

    2004-07-13

    Air is sampled at a rate in excess of 100 L/min, preferably at 200-300 L/min, so as to collect therefrom a substantial fraction, i.e., at least 20%, preferably 60-100%, of airborne particulates. A substance of interest (analyte), such as lead, is rapidly solubilized from the the collected particulates into a sample of liquid extractant, and the concentration of the analyte in the extractant sample is determined. The high-rate air sampling and particulate collection may be effected with a high-throughput filter cartridge or with a recently developed portable high-throughput liquid-absorption air sampler. Rapid solubilization of lead is achieved by a liquid extractant comprising 0.1-1 M of acetic acid or acetate, preferably at a pH of 5 or less and preferably with inclusion of 1-10% of hydrogen peroxide. Rapid determination of the lead content in the liquid extractant may be effected with a colorimetric or an electroanalytical analyzer.

  7. Compound-Specific Radiocarbon Analyses of Phospholipid Fatty Acids and n-Alkanes in Ocean Sediments

    E-Print Network [OSTI]

    2010-01-01

    Monica Basin surface sediment: a model based on compound-ACIDS AND n-ALKANES IN OCEAN SEDIMENTS Ellen R M Druffel 1 •organic matter in ocean sediments from the northeast Pacific

  8.  COMPOUND-SPECIFIC RADIOCARBON ANALYSES OF PHOSPHOLIPID FATTY ACIDS AND n -ALKANES IN OCEAN SEDIMENTS

    E-Print Network [OSTI]

    2010-01-01

    Monica Basin surface sediment: a model based on compound-ACIDS AND n-ALKANES IN OCEAN SEDIMENTS Ellen R M Druffel 1 •organic matter in ocean sediments from the northeast Pacific

  9. Vapor cooled current lead for cryogenic electrical equipment

    DOE Patents [OSTI]

    Vansant, James H. (Tracy, CA)

    1983-01-01

    Apparatus and method are provided for conducting electric current to cryogenic electrical equipment devices. A combination of inner and outer tubes together form a plurality of hollow composite tubes housed in a sheath. Top and bottom block mounting means are fitted to hold the composite tubes and are affixed to the ends of the sheath. This combination forms a current lead. The current lead is attached to a cryogenic device housing a fluid coolant which moves through the current lead, cooling the current lead as the fluid travels.

  10. Robert C. Seamans, Jr. Appointed to Lead Nuclear Weapons Program...

    National Nuclear Security Administration (NNSA)

    C. Seamans, Jr. Appointed to Lead Nuclear Weapons Program | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile...

  11. Sandia Energy - Novel Nanoparticle Production Method Could Lead...

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

    Novel Nanoparticle Production Method Could Lead to Better Lights, Lenses, Solar Cells Home Energy Solid-State Lighting Facilities Capabilities CINT News Energy Efficiency News &...

  12. Data, Feedback, & Awareness Lead to Big Energy Savings | Department...

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

    Data, Feedback, & Awareness Lead to Big Energy Savings Fact sheet describes how the Navy Region Southwest Metro San Diego Area (NRSMSD) regional energy management team achieved...

  13. Weerts to lead Physical Sciences and Engineering directorate...

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

    Weerts to lead Physical Sciences and Engineering directorate By Lynn Tefft Hoff * August 10, 2015 Tweet EmailPrint Hendrik (Harry) Joseph Weerts has been named the associate...

  14. Combined Heat and Power System Enables 100% Reliability at Leading...

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

    buildings on nearly 1,000 acres. Photo courtesy of Thermal Energy Corporation Combined Heat and Power System Enables 100% Reliability at Leading Medical Campus Recovery Act...

  15. A Boring Material "Stretched" Could Lead to an Electronics Revolution...

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

    to APS Science Highlights rss feed A Boring Material "Stretched" Could Lead to an Electronics Revolution SEPTEMBER 30, 2010 Bookmark and Share Predicted effect of biaxial strain...

  16. Paul Langan to lead ORNL's Neutron Sciences Directorate | ornl...

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

    science activities, which include two leading DOE Office of Science user facilities for neutron scattering analysis: The Spallation Neutron Source (SNS) and the High Flux Isotope...

  17. West Africa Emerges as Leading Region in Africa for Renewable...

    Open Energy Info (EERE)

    West Africa Emerges as Leading Region in Africa for Renewable Energy and Energy Efficiency Home > Groups > Clean and Renewable Energy Dc's picture Submitted by Dc(266) Contributor...

  18. New Director to lead Technology Development and Commercialization...

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

    New Director to lead Technology Development and Commercialization division April 2, 2015 Tweet EmailPrint Suresh Sunderrajan has been appointed Director of Argonne's Technology...

  19. GE leads the way in photonics research | GE Global Research

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

    leads a global team of over 500 scientists and engineers, responsible for advanced technology development in the areas of semiconductor devices and packaging, electronics,...

  20. Testing your home for lead in paint, dust, and soil

    SciTech Connect (OSTI)

    1998-10-01

    This publication is for anyone who is considering having a home or residence tested for lead in paint, dust, or soil by a professional. It explains the technical aspects of lead testing without overwhelming the reader. The first section tells why you would test for lead, the approaches for testing for lead, and what information you will get from each approach. The second section answers specific questions about how paint, soil, and dust sampling are conducted by the professional in your home. Finally, the last section answers other questions about testing, including questions about home test kits and testing of water and ceramics.

  1. NREL Leads Effort to Get Traffic Moving in Right Direction -...

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

    NREL Leads Effort to Get Traffic Moving in Right Direction Connected Traveler project will guide travelers in energy-efficient manner August 17, 2015 The Energy Department's...

  2. Update on Establishing the Feasibility of Lead Slowing Down Spectrosco...

    Office of Scientific and Technical Information (OSTI)

    of Lead Slowing Down Spectroscopy for Direct Measurement of Plutonium in Used Fuel Citation Details In-Document Search Title: Update on Establishing the Feasibility of...

  3. Huizenga leads safety of spent fuel management, radioactive waste...

    National Nuclear Security Administration (NNSA)

    Huizenga leads safety of spent fuel management, radioactive waste management meeting in Vienna | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People...

  4. Process for forming sulfuric acid

    DOE Patents [OSTI]

    Lu, Wen-Tong P. (Upper St. Clair, PA)

    1981-01-01

    An improved electrode is disclosed for the anode in a sulfur cycle hydrogen generation process where sulfur dioxie is oxidized to form sulfuric acid at the anode. The active compound in the electrode is palladium, palladium oxide, an alloy of palladium, or a mixture thereof. The active compound may be deposited on a porous, stable, conductive substrate.

  5. An Experimental and Kinetic Modeling Study of Methyl Decanoate Combustion

    SciTech Connect (OSTI)

    Sarathy, S M; Thomson, M J; Pitz, W J; Lu, T

    2010-02-19

    Biodiesel is typically a mixture of long chain fatty acid methyl esters for use in compression ignition engines. Improving biofuel engine performance requires understanding its fundamental combustion properties and the pathways of combustion. This research study presents new combustion data for methyl decanoate in an opposed-flow diffusion flame. An improved detailed chemical kinetic model for methyl decanoate combustion is developed, which serves as the basis for deriving a skeletal mechanism via the direct relation graph method. The novel skeletal mechanism consists of 648 species and 2998 reactions. This mechanism well predicts the methyl decanoate opposed-flow diffusion flame data. The results from the flame simulations indicate that methyl decanoate is consumed via abstraction of hydrogen atoms to produce fuel radicals, which lead to the production of alkenes. The ester moiety in methyl decanoate leads to the formation of low molecular weight oxygenated compounds such as carbon monoxide, formaldehyde, and ketene.

  6. Characterization of Small Scale Heterogeneity for Prediction of Acid Fracture Performance 

    E-Print Network [OSTI]

    Beatty, Cassandra Vonne

    2010-10-12

    have shown that the differential etching necessary to create lasting fracture conductivity is caused by the heterogeneous distributions of permeability and mineralogy along the fracture faces. To predict the conductivity that can be created by acid... of permeability and mineralogy in a carbonate formation. The correlation length parameters are a first step in being able to couple acid transport and rock dissolution models at reservoir scale with a model of fracture conductivity based on channels...

  7. Biosorption of Lead and Nickel by Biomass of Marine Algae

    E-Print Network [OSTI]

    Volesky, Bohumil

    Biosorption of Lead and Nickel by Biomass of Marine Algae Z.R. Holan and B. Volesky" Department 22, 1993 Screening tests of different marine algae biomass types revealed a high passive biosorptive uptake of lead up to 270 mg Pb/g of biomass in some brown marine algae. Members of the order Fucales

  8. Search for spontaneous muon emission from lead nuclei

    E-Print Network [OSTI]

    L. Arrabito; D. Autiero; E. Barbuto; C. Bozza; S. Cecchini; L. Consiglio; M. Cozzi; N. D'Ambrosio; Y. Declais; G. De Lellis; G. De Rosa; M. De Serio; D. Di Ferdinando; A. Di Giovanni; N. Di Marco; L. S. Esposito; G. Giacomelli; M. Giorgini; G. Grella; M. Hauger; M. Ieva; D. B. Ion; I. Janicsko; F. Juget; I. Laktineh; G. Mandrioli; S. Manzoor; A. Margiotta; P. Migliozzi; P. Monacelli; M. T. Muciaccia; L. Patrizii; C. Pistillo; V. Popa; G. Romano; G. Rosa; P. Royole-Degieux; S. Simone; M. Sioli; C. Sirignano; G. Sirri; G. Sorrentino; M. Spurio; V. Tioukov

    2005-08-05

    We describe a possible search for muonic radioactivity from lead nuclei using the base elements ("bricks" composed by lead and nuclear emulsion sheets) of the long-baseline OPERA neutrino experiment. We present the results of a Monte Carlo simulation concerning the expected event topologies and estimates of the background events. Using few bricks, we could reach a good sensitivity level.

  9. Law Update Cover 2,3 No More Spreading Lead

    E-Print Network [OSTI]

    Hutyra, Lucy R.

    Receipt Did You Know? Page 4 Not All Lead Base Paint is a Hazard Calendar Page 5 Upcoming Meetings News Sullivan, Attorney Page Deanna Boufford, Financial Services Page 7 Organized by and for Rental Property Compliance Project (RCCP). The RCCP provides education on federal lead-based paint requirements. He now

  10. Nitrided Metallic Bipolar Plates M.P. Brady (project lead)

    E-Print Network [OSTI]

    Nitrided Metallic Bipolar Plates M.P. Brady (project lead) P. F. Tortorelli Oak Ridge National - $2480 K · ORNL (Lead) · Allegheny Ludlum · Funding for Year 2 · Arizona State University - $2050 K wt.% ­ pre-oxidation key to protective surface nitride formation ­ V segregation into Cr-oxide makes

  11. History of Lead Pollution Recorded in East China Sea Sediments

    E-Print Network [OSTI]

    Huh, Chih-An

    inner-shelf cores were expected to shed light on the source and transport of pollutants associatedHistory of Lead Pollution Recorded in East China Sea Sediments CHIH-AN HUH* and HUNG-YU CHEN concentrations to establish sediment chronologies and unravel the history of lead pollution. The data show

  12. CDC Lead Poisoning Prevention and Treatment Recommendations for Refugee Children

    E-Print Network [OSTI]

    CDC Lead Poisoning Prevention and Treatment Recommendations for Refugee Children 1. Background of elevated blood lead levels is much higher among newly resettled refugee children in the United States than poisoning, regardless of the age of their housing. This occurrence is common among certain refugee

  13. World-leading research advancing the frontiers of technology

    E-Print Network [OSTI]

    Department of Physics World-leading research advancing the frontiers of technology inspiring the Departments of Physics, Chemistry and Electronics, and has world-class facilities for nanoscale fabrication CONTENTS World-leading research in a dynamic environment 4 Teaching excellence 6 Graduation studies 7

  14. Water supplier copes with lead paint removal regs

    SciTech Connect (OSTI)

    Becker, C.E. ); Lovejoy, D.R.; Bryck, J.L.; Rockensies, W.H.

    1993-12-01

    This article examines new paint removal methods that minimize releasing of paints containing lead to the environment and lead free coating systems for tank corrosion protection used in the Village of Freeport in Long Island, New York. The topics of the article include coating failures, removal tools and methods, paint and application methods.

  15. Total Acid Value Titration of Hydrotreated Biomass Fast Pyrolysis Oil: Determination of Carboxylic Acids and Phenolics with Multiple End-Point Detection

    SciTech Connect (OSTI)

    Christensen, E.; Alleman, T. L.; McCormick, R. L.

    2013-01-01

    Total acid value titration has long been used to estimate corrosive potential of petroleum crude oil and fuel oil products. The method commonly used for this measurement, ASTM D664, utilizes KOH in isopropanol as the titrant with potentiometric end point determination by pH sensing electrode and Ag/AgCl reference electrode with LiCl electrolyte. A natural application of the D664 method is titration of pyrolysis-derived bio-oil, which is a candidate for refinery upgrading to produce drop in fuels. Determining the total acid value of pyrolysis derived bio-oil has proven challenging and not necessarily amenable to the methodology employed for petroleum products due to the different nature of acids present. We presented an acid value titration for bio-oil products in our previous publication which also utilizes potentiometry using tetrabutylammonium hydroxide in place of KOH as the titrant and tetraethylammonium bromide in place of LiCl as the reference electrolyte to improve the detection of these types of acids. This method was shown to detect numerous end points in samples of bio-oil that were not detected by D664. These end points were attributed to carboxylic acids and phenolics based on the results of HPLC and GC-MS studies. Additional work has led to refinement of the method and it has been established that both carboxylic acids and phenolics can be determined accurately. Use of pH buffer calibration to determine half-neutralization potentials of acids in conjunction with the analysis of model compounds has allowed us to conclude that this titration method is suitable for the determination of total acid value of pyrolysis oil and can be used to differentiate and quantify weak acid species. The measurement of phenolics in bio-oil is subject to a relatively high limit of detection, which may limit the utility of titrimetric methodology for characterizing the acidic potential of pyrolysis oil and products.

  16. Method for fabricating fan-fold shielded electrical leads

    DOE Patents [OSTI]

    Rohatgi, R.R.; Cowan, T.E.

    1994-12-27

    Fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate. 3 figures.

  17. Method for fabricating fan-fold shielded electrical leads

    DOE Patents [OSTI]

    Rohatgi, Rajeev R. (Mountain View, CA); Cowan, Thomas E. (Livermore, CA)

    1994-01-01

    Fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate.

  18. Replica amplification of nucleic acid arrays

    DOE Patents [OSTI]

    Church, George M. (Brookline, MA)

    2002-01-01

    A method of producing a plurality of a nucleic acid array, comprising, in order, the steps of amplifying in situ nucleic acid molecules of a first randomly-patterned, immobilized nucleic acid array comprising a heterogeneous pool of nucleic acid molecules affixed to a support, transferring at least a subset of the nucleic acid molecules produced by such amplifying to a second support, and affixing the subset so transferred to the second support to form a second randomly-patterned, immobilized nucleic acid array, wherein the nucleic acid molecules of the second array occupy positions that correspond to those of the nucleic acid molecules from which they were amplified on the first array, so that the first array serves as a template to produce a plurality, is disclosed.

  19. Recovery of mercury from acid waste residues

    DOE Patents [OSTI]

    Greenhalgh, W.O.

    1987-02-27

    Mercury can be recovered from nitric acid-containing fluids by reacting the fluid with aluminum metal to produce mercury metal, and thence quenching the reactivity of the nitric acid prior to nitration of the mercury metal. 1 fig.

  20. Fuel cell electrolyte membrane with acidic polymer

    DOE Patents [OSTI]

    Hamrock, Steven J. (Stillwater, MN); Larson, James M. (Saint Paul, MN); Pham, Phat T. (Little Canada, MN); Frey, Matthew H. (Cottage Grove, MN); Haugen, Gregory M. (Edina, MN); Lamanna, William M. (Stillwater, MN)

    2009-04-14

    An electrolyte membrane is formed by an acidic polymer and a low-volatility acid that is fluorinated, substantially free of basic groups, and is either oligomeric or non-polymeric.

  1. LABORATORY STUDIES ON THE FORMATION OF FORMIC ACID (HCOOH) IN INTERSTELLAR AND COMETARY ICES

    SciTech Connect (OSTI)

    Bennett, Chris J.; Kim, Yong Seol; Kaiser, Ralf I.; Hama, Tetsuya; Kawasaki, Masahiro

    2011-01-20

    Mixtures of water (H{sub 2}O) and carbon monoxide (CO) ices were irradiated at 10 K with energetic electrons to simulate the energy transfer processes that occur in the track of galactic cosmic-ray particles penetrating interstellar ices. We identified formic acid (HCOOH) through new absorption bands in the infrared spectra at 1690 and 1224 cm{sup -1} (5.92 and 8.17 {mu}m, respectively). During the subsequent warm-up of the irradiated samples, formic acid is evident from the mass spectrometer signal at the mass-to-charge ratio, m/z = 46 (HCOOH{sup +}) as the ice sublimates. The detection of formic acid was confirmed using isotopically labeled water-d2 with carbon monoxide, leading to formic acid-d2 (DCOOD). The temporal fits of the reactants, reaction intermediates, and products elucidate two reaction pathways to formic acid in carbon monoxide-water ices. The reaction is induced by unimolecular decomposition of water forming atomic hydrogen (H) and the hydroxyl radical (OH). The dominating pathway to formic acid (HCOOH) was found to involve addition of suprathermal hydrogen atoms to carbon monoxide forming the formyl radical (HCO); the latter recombined with neighboring hydroxyl radicals to yield formic acid (HCOOH). To a lesser extent, hydroxyl radicals react with carbon monoxide to yield the hydroxyformyl radical (HOCO), which recombined with atomic hydrogen to produce formic acid. Similar processes are expected to produce formic acid within interstellar ices, cometary ices, and icy satellites, thus providing alternative processes for the generation of formic acid whose abundance in hot cores such as Sgr-B2 cannot be accounted for solely by gas-phase chemistry.

  2. A new XRF method for measuring lead in paint

    SciTech Connect (OSTI)

    Grodzins, L.; Parsons, C.; Sackett, D.; Shefsky, S.; Tannian, B.

    1995-12-31

    The traditional field testing method for lead paint is the use of x-ray fluorescence, where the K shell fluorescence x-rays of lead (at 73 and 75 MeV) are measured. Although the K shell method can suffer from substrate effects and hence low sensitivity around the action level of 1 mg/cm{sup 2} of lead, it has been the industry choice because the effects of the overlying paint matrix on the K-shell x-rays are negligible. L shell x-rays of lead, at L{sub {alpha}} = 10.5 keV and L{sub {beta}} = 12.6 keV, provide much greater sensitivity and are free of substrate effects, but corrections for the absorption of the L-shell x-rays by the overlying non-lead paint matrix must be made. Such corrections were thought to be impossible without knowledge of the composition and thickness of the overlying paint matrix. NITON has developed a new method that makes it possible to use L-shell x-rays to accurately and quickly determine the absolute concentration of lead in buried lead paint (in mg/cm{sup 2}) without knowledge of the composition or thickness of the layers overlying the lead. The invention makes use of the fact that the ratio of the mass attenuation coefficients for the L{sub {alpha}} at 10.5 keV to the L{sub {beta}} at 12.6 keV is effectively independent of the elemental composition of paint layers. The new method also gives a measure of the depth of the lead beneath the surface. Theory and confirming experimental data will be presented. The authors will describe the NITON XL, a portable XRF device which uses the invention to give the lead concentration and its depth beneath the surface of paint.

  3. SU-E-P-09: Radiation Transmission Measurements and Evaluation of Diagnostic Lead-Based and Lead-Free Aprons

    SciTech Connect (OSTI)

    Syh, J

    2014-06-01

    Purpose: This study was conducted to ensure that various lead shield apron manufacturers provided accurate attenuation factors regardless of whether the apron was made of lead-based or lead-free equivalent material. Methods: A calibrated ionization survey meter was placed at chest height and 36 cm horizontally away from a solid water phantom on a simulator couch. Measurements were done with or without apron. Radiation field was set to 24cmx24cm with the phantom at 100cm source-to-surface distance. Irradiation time was set for 1 minute at voltages of 60, 80, 100 and 120 kVp. Current was set at 6mA. Results: Between 60 kVp and 120 kVp, the transmission through 0.50 mm of lead-based apron was between 1.0% and 6.5% with a mean value of 3.2% and a standard deviation (s.d.) of 1.4%. The transmissions through the 0.50 mm lead-free aprons were 1.0 % to 12.0% with a mean value of 6.1% and s.d. of 2.6%. At 120 kVp, the transmission value was 6.5% for 0.50 mm lead-based apron and 11.1% to 12.0% for 0.50 mm lead-free aprons. The radiation transmissions at 80 kVp, measured in two different 0.5 mm lead-free aprons, were 4.3% each. However, only 1.4% transmission was found through the lead-based apron. Overall, the radiation transmitted through the lead-based apron was 1/3 transmission of lead-free at 80kVp, and half value of lead-free aprons at 100 and 120 kVp. Conclusion: Even though lead-based and lead-free aprons all claimed to have the same lead equivalent thickness, the transmission might not be the same. The precaution was needed to exercise diligence in quality assurance program to assure adequate protection to staff who wear it during diagnostic procedures. The requirement for aprons not only should be in certain thickness to meet state regulation but also to keep reasonably achievable low exposure with the accurate labeling from manufacturers.

  4. Chemical Additive Selection in Matrix Acidizing 

    E-Print Network [OSTI]

    Weidner, Jason 1981-

    2011-05-09

    critical detail of weak acid chemistry. One concern when using any acid in oilfield operations is the corrosion of well tubulars. Thus operators often choose to pump corrosion inhibitor, a chemical additive electrostatically attracted... to the negative charge of the well casing or production tubing, to decrease the rate at which the acid accesses well tubular surfaces (Crowe and Minor 1985). A typical working concentration of corrosion inhibitor is 1-2 wt% of injected acid (Smith et al. 1978...

  5. Production of high molecular weight polylactic acid

    DOE Patents [OSTI]

    Bonsignore, Patrick V. (Joilet, IL)

    1995-01-01

    A degradable high molecular weight poly(lactic acid). A poly(lactic acid) has a terminal end group of one of carboxyl or hydroxyl groups with low molecular weight poly(lactic acid) units coupled with linking agents of di-isocyanates, bis-epoxides, bis-oxazolines and bis-ortho esters. The resulting high molecular weight poly(lactic acid) can be used for applications taking advantage of the improved physical properties.

  6. Production of high molecular weight polylactic acid

    DOE Patents [OSTI]

    Bonsignore, P.V.

    1995-11-28

    A degradable high molecular weight poly(lactic acid) is described. The poly(lactic acid) has a terminal end group of one of carboxyl or hydroxyl groups with low molecular weight poly(lactic acid) units coupled with linking agents of di-isocyanates, bis-epoxides, bis-oxazolines and bis-ortho esters. The resulting high molecular weight poly(lactic acid) can be used for applications taking advantage of the improved physical properties.

  7. Metabolically active eukaryotic communities in extremely acidic mine drainage

    E-Print Network [OSTI]

    Baker, Brett J; Lutz, M A; Dawson, S C; Bond, P L; Banfield, J F

    2004-01-01

    Microbial communities in acid mine drainage. FEMS Microbiol.Biogeochem- istry of acid mine drainage at Iron Mountain,in an extreme acid mine drainage environment. Appl. Environ.

  8. Lactic acid-producing yeast cells having nonfunctional L- or D-lactate:ferricytochrome C oxidoreductase cells

    DOE Patents [OSTI]

    Miller, Matthew (Boston, MA); Suominen, Pirkko (Maple Grove, MN); Aristidou, Aristos (Highland Ranch, CO); Hause, Benjamin Matthew (Currie, MN); Van Hoek, Pim (Camarillo, CA); Dundon, Catherine Asleson (Minneapolis, MN)

    2012-03-20

    Yeast cells having an exogenous lactate dehydrogenase gene ae modified by reducing L- or D-lactate:ferricytochrome c oxidoreductase activity in the cell. This leads to reduced consumption of lactate by the cell and can increase overall lactate yields in a fermentation process. Cells having the reduced L- or D-lactate:ferricytochrome c oxidoreductase activity can be screened for by resistance to organic acids such as lactic or glycolic acid.

  9. Lead poisoning of waterfowl is neither a new disease nor a subject without controversy. The use of lead shot for water-

    E-Print Network [OSTI]

    Lead 317 Chapter 43 Lead Synonym Plumbism Lead poisoning of waterfowl is neither a new disease nor of lead shot for nonwaterfowl hunt- ing. The first documented reports within the United States of lead-poisoned deposited in environments where birds feed assure that lead poisoning will remain a common bird disease

  10. Unnatural reactive amino acid genetic code additions

    SciTech Connect (OSTI)

    Deiters, Alexander; Cropp, T. Ashton; Chin, Jason W.; Anderson, J. Christopher; Schultz, Peter G.

    2014-08-26

    This invention provides compositions and methods for producing translational components that expand the number of genetically encoded amino acids in eukaryotic cells. The components include orthogonal tRNAs, orthogonal aminoacyl-tRNA synthetases, orthogonal pairs of tRNAs/synthetases and unnatural amino acids. Proteins and methods of producing proteins with unnatural amino acids in eukaryotic cells are also provided.

  11. Unnatural reactive amino acid genetic code additions

    DOE Patents [OSTI]

    Deiters, Alexander (La Jolla, CA); Cropp, T. Ashton (San Diego, CA); Chin, Jason W. (Cambridge, GB); Anderson, J. Christopher (San Francisco, CA); Schultz, Peter G. (La Jolla, CA)

    2011-02-15

    This invention provides compositions and methods for producing translational components that expand the number of genetically encoded amino acids in eukaryotic cells. The components include orthogonal tRNAs, orthogonal aminoacyl-tRNA synthetases, orthogonal pairs of tRNAs/synthetases and unnatural amino acids. Proteins and methods of producing proteins with unnatural amino acids in eukaryotic cells are also provided.

  12. Unnatural reactive amino acid genetic code additions

    DOE Patents [OSTI]

    Deiters, Alexander (La Jolla, CA); Cropp, T. Ashton (Bethesda, MD); Chin, Jason W. (Cambridge, GB); Anderson, J. Christopher (San Francisco, CA); Schultz, Peter G. (La Jolla, CA)

    2011-08-09

    This invention provides compositions and methods for producing translational components that expand the number of genetically encoded amino acids in eukaryotic cells. The components include orthogonal tRNAs, orthogonal aminoacyl-tRNAsyn-thetases, pairs of tRNAs/synthetases and unnatural amino acids. Proteins and methods of producing proteins with unnatural amino acids in eukaryotic cells are also provided.

  13. Unnatural reactive amino acid genetic code additions

    DOE Patents [OSTI]

    Deiters, Alexander; Cropp, Ashton T; Chin, Jason W; Anderson, Christopher J; Schultz, Peter G

    2013-05-21

    This invention provides compositions and methods for producing translational components that expand the number of genetically encoded amino acids in eukaryotic cells. The components include orthogonal tRNAs, orthogonal aminoacyl-tRNA synthetases, pairs of tRNAs/synthetases and unnatural amino acids. Proteins and methods of producing proteins with unnatural amino acids in eukaryotic cells are also provided.

  14. Synthesis of an acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters

    DOE Patents [OSTI]

    Moens, L.

    1999-05-25

    A process is disclosed for preparing an acid addition salt of delta-aminolevulinic acid comprising. The process involves dissolving a lower alkyl 5-bromolevulinate and an alkali metal diformylamide in an organic solvent selected from the group consisting of acetonitrile, methanol, tetrahydrofuran, 2-methyltetrahydrofuran and methylformate or mixtures to form a suspension of an alkyl 5-(N,N-diformylamino) levulinate ester; and hydrolyzing the alkyl 5-(N,N-diformylamino) levulinate with an inorganic acid to form an acid addition salt of delta-amino levulinic acid.

  15. Synthesis of an acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters

    DOE Patents [OSTI]

    Moens, Luc (Lakewood, CO)

    1999-01-01

    A process of preparing an acid addition salt of delta-aminolevulinic acid comprising: dissolving a lower alkyl 5-bromolevulinate and an alkali metal diformylamide in an organic solvent selected from the group consisting of acetonitrile, methanol, tetrahydrofuran, 2-methyltetrahydrofuran and methylformate or mixtures thereof to form a suspension of an alkyl 5-(N,N-diformylamino) levulinate ester; and hydrolyzing said alkyl 5-(N,N-diformylamino) levulinate with an inorganic acid to form an acid addition salt of delta-amino levulinic acid.

  16. Prediction of liquid-liquid equilibrium for systems of vegetable oils, fatty acids, and ethanol

    SciTech Connect (OSTI)

    Batista, E.; Monnerat, S.; Stragevitch, L.; Pina, C.G.; Goncalves, C.B.; Meirelles, A.J.A.

    1999-12-01

    Group interaction parameters for the UNIFAC and ASOG models were specially adjusted for predicting liquid-liquid equilibrium (LLE) for systems of vegetable oils, fatty acids, and ethanol at temperatures ranging from 20 to 45 C. Experimental liquid-liquid equilibrium data for systems of triolein, oleic acid, and ethanol and of triolein, stearic acid, and ethanol were measured and utilized in the adjustment. The average percent deviation between experimental and calculated compositions was 0.79% and 0.52% for the UNIFAC and ASOG models, respectively. The prediction of liquid-liquid equilibrium for systems of vegetable oils, fatty acids, and ethanol was quite successful, with an average deviation of 1.31% and 1.32% for the UNIFAC and ASOG models, respectively.

  17. Thermal Stability Of Formohydroxamic Acid

    SciTech Connect (OSTI)

    Fondeur, F. F.; Rudisill, T. S.

    2011-10-21

    The thermal stability of formohydroxamic acid (FHA) was evaluated to address the potential for exothermic decomposition during storage and its use in the uranium extraction process. Accelerating rate calorimetry showed rapid decomposition at a temperature above 65 {degree}?C; although, the rate of pressure rise was greater than two orders of magnitude less than the lower bound for materials which have no explosive properties with respect to transportation. FHA solutions in water and nitric acid did not reach runaway conditions until 150 {degree}?C. Analysis by differential scanning calorimetry showed that FHA melted at 67 {degree}?C and thermally decomposed at 90 {degree}?C with an enthalpy of -1924 J/g. The energics of the FHA thermal decomposition are comparable to those measured for aqueous solutions of hydroxylamine nitrate. Solid FHA should be stored in a location where the temperature does not exceed 20-25 {degree}?C. As a best practice, the solid material should be stored in a climate-controlled environment such as a refrigerator or freezer. FHA solutions in water are not susceptible to degradation by acid hydrolysis and are the preferred way to handle FHA prior to use.

  18. Acid Diversion in Carbonate Reservoirs Using Polymer-Based In-Situ Gelled Acids 

    E-Print Network [OSTI]

    Gomaa, Ahmed Mohamed Mohamed

    2012-07-16

    and determine factors that impact its performance. Lab test of polymer-based in-situ gelled acids reveal that polymer and other additives separate out of the acid when these acids are prepared in high salinity water. In coreflood tests, in-situ gelled acid...

  19. Quench propagation in High Temperature Superconducting materials integrated in high current leads

    E-Print Network [OSTI]

    Milani, D

    2001-01-01

    High temperature superconductors (HTS) have been integrated in the high current leads for the Large Hadron Collider (LHC), under construction at CERN, in order to reduce the heat leak into the liquid helium bath due to the joule effect. The use of the HTS technology in the lower part of the current leads allowed to significantly reduce the heat charge on the cryogenic system. Hybrid current leads have been designed to fulfill the LHC requirements with respect to thermal load; several tests have been performed to study the lead behavior especially during a quench transient. Quench experiments have been performed at CERN on 13 kA prototypes to determine the adequate design and protection. In all the tests it is possible to know the temperature profile of the HTS only with the help of quench simulations that model the thermo-hydraulic processes during quench. The development of a theoretical model for the simulation allows reducing the number of test to perform and to scale the experimental result to other curre...

  20. How to implement a gasoline pool lead phase-down

    SciTech Connect (OSTI)

    Al-Mutaz, I.S. [King Saud Univ., Riyadh (Saudi Arabia)

    1996-02-01

    Some operational changes can be made for immediate reduction of lead concentration of gasoline that require no capital investment. For a further lead reduction, installing new refinery units and/or modifications to existing ones are required. The production of unleaded gasoline in the Riyadh refinery required improvement of the clear research octane number (RON) of light naphtha, light isomerate and reformate. However, only a once-through isomerization unit is needed if MTBE blending is planned. The paper describes how the Riyadh refinery in Saudi Arabia phased lead from their gasoline production.

  1. Zinc halogen battery electrolyte composition with lead additive

    DOE Patents [OSTI]

    Henriksen, Gary L. (Troy, MI)

    1981-01-01

    This disclosure relates to a zinc halogen battery electrolyte composition containing an additive providing improved zinc-on-zinc recyclability. The improved electrolyte composition involves the use of a lead additive to inhibit undesirable irregular plating and reduce nodular or dendritic growth on the electrode surface. The lead-containing electrolyte composition of the present invention appears to influence not only the morphology of the base plate zinc, but also the morphology of the zinc-on-zinc replate. In addition, such lead-containing electrolyte compositions appear to reduce hydrogen formation.

  2. Method for sequencing nucleic acid molecules

    DOE Patents [OSTI]

    Korlach, Jonas; Webb, Watt W.; Levene, Michael; Turner, Stephen; Craighead, Harold G.; Foquet, Mathieu

    2006-06-06

    The present invention is directed to a method of sequencing a target nucleic acid molecule having a plurality of bases. In its principle, the temporal order of base additions during the polymerization reaction is measured on a molecule of nucleic acid, i.e. the activity of a nucleic acid polymerizing enzyme on the template nucleic acid molecule to be sequenced is followed in real time. The sequence is deduced by identifying which base is being incorporated into the growing complementary strand of the target nucleic acid by the catalytic activity of the nucleic acid polymerizing enzyme at each step in the sequence of base additions. A polymerase on the target nucleic acid molecule complex is provided in a position suitable to move along the target nucleic acid molecule and extend the oligonucleotide primer at an active site. A plurality of labelled types of nucleotide analogs are provided proximate to the active site, with each distinguishable type of nucleotide analog being complementary to a different nucleotide in the target nucleic acid sequence. The growing nucleic acid strand is extended by using the polymerase to add a nucleotide analog to the nucleic acid strand at the active site, where the nucleotide analog being added is complementary to the nucleotide of the target nucleic acid at the active site. The nucleotide analog added to the oligonucleotide primer as a result of the polymerizing step is identified. The steps of providing labelled nucleotide analogs, polymerizing the growing nucleic acid strand, and identifying the added nucleotide analog are repeated so that the nucleic acid strand is further extended and the sequence of the target nucleic acid is determined.

  3. Method for sequencing nucleic acid molecules

    DOE Patents [OSTI]

    Korlach, Jonas; Webb, Watt W.; Levene, Michael; Turner, Stephen; Craighead, Harold G.; Foquet, Mathieu

    2006-05-30

    The present invention is directed to a method of sequencing a target nucleic acid molecule having a plurality of bases. In its principle, the temporal order of base additions during the polymerization reaction is measured on a molecule of nucleic acid, i.e. the activity of a nucleic acid polymerizing enzyme on the template nucleic acid molecule to be sequenced is followed in real time. The sequence is deduced by identifying which base is being incorporated into the growing complementary strand of the target nucleic acid by the catalytic activity of the nucleic acid polymerizing enzyme at each step in the sequence of base additions. A polymerase on the target nucleic acid molecule complex is provided in a position suitable to move along the target nucleic acid molecule and extend the oligonucleotide primer at an active site. A plurality of labelled types of nucleotide analogs are provided proximate to the active site, with each distinguishable type of nucleotide analog being complementary to a different nucleotide in the target nucleic acid sequence. The growing nucleic acid strand is extended by using the polymerase to add a nucleotide analog to the nucleic acid strand at the active site, where the nucleotide analog being added is complementary to the nucleotide of the target nucleic acid at the active site. The nucleotide analog added to the oligonucleotide primer as a result of the polymerizing step is identified. The steps of providing labelled nucleotide analogs, polymerizing the growing nucleic acid strand, and identifying the added nucleotide analog are repeated so that the nucleic acid strand is further extended and the sequence of the target nucleic acid is determined.

  4. Surface dust wipes are the best predictors of blood leads in young children with elevated blood lead levels

    SciTech Connect (OSTI)

    Gulson, Brian, E-mail: brian.gulson@mq.edu.au [Graduate School of the Environment, Macquarie University, North Ryde NSW 2109 (Australia) [Graduate School of the Environment, Macquarie University, North Ryde NSW 2109 (Australia); CSIRO Earth Science and Resource Engineering, North Ryde NSW 2113 (Australia); Anderson, Phil [Information and Statistics Group, Australian Institute of Health and Welfare, Canberra ACT 2601 (Australia) [Information and Statistics Group, Australian Institute of Health and Welfare, Canberra ACT 2601 (Australia); Faculty of Health, University of Canberra, Canberra ACT 2601 (Australia); Taylor, Alan [Department of Psychology, Macquarie University, Sydney NSW 2109 (Australia)] [Department of Psychology, Macquarie University, Sydney NSW 2109 (Australia)

    2013-10-15

    Background: As part of the only national survey of lead in Australian children, which was undertaken in 1996, lead isotopic and lead concentration measurements were obtained from children from 24 dwellings whose blood lead levels were ?15 µg/dL in an attempt to determine the source(s) of their elevated blood lead. Comparisons were made with data for six children with lower blood lead levels (<10 µg/dL). Methods: Thermal ionisation and isotope dilution mass spectrometry were used to determine high precision lead isotopic ratios ({sup 208}Pb/{sup 206}Pb, {sup 207}Pb/{sup 206}Pb and {sup 206}Pb/{sup 204}Pb) and lead concentrations in blood, dust from floor wipes, soil, drinking water and paint (where available). Evaluation of associations between blood and the environmental samples was based on the analysis of individual cases, and Pearson correlations and multiple regression analyses based on the whole dataset. Results and discussion: The correlations showed an association for isotopic ratios in blood and wipes (r=0.52, 95% CI 0.19–0.74), blood and soil (r=0.33, 95% CI ?0.05–0.62), and blood and paint (r=0.56, 95% CI 0.09–0.83). The regression analyses indicated that the only statistically significant relationship for blood isotopic ratios was with dust wipes (B=0.65, 95% CI 0.35–0.95); there were no significant associations for lead concentrations in blood and environmental samples. There is a strong isotopic correlation of soils and house dust (r=0.53, 95% CI 0.20–0.75) indicative of a common source(s) for lead in soil and house dust. In contrast, as with the regression analyses, no such association is present for bulk lead concentrations (r=?0.003, 95% CI ?0.37–0.36), the most common approach employed in source investigations. In evaluation of the isotopic results on a case by case basis, the strongest associations were for dust wipes and blood. -- Highlights: • Children with elevated blood lead ?15 µg/dL compared with a group with <10 µg/dL. • High precision lead isotopic ratios in blood, house dust wipes, soil, water, paint. • Associations for isotopic measures of blood and dust, blood and soil, blood and paint. • Regressions gave significance for isotopic measures of blood/dust and dust/soil.

  5. Solid-state actinide acid phosphites from phosphorous acid melts

    SciTech Connect (OSTI)

    Oh, George N. [Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, IN 46556 (United States); Burns, Peter C., E-mail: pburns@nd.edu [Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, IN 46556 (United States); Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556 (United States)

    2014-07-01

    The reaction of UO{sub 3} and H{sub 3}PO{sub 3} at 100 °C and subsequent reaction with dimethylformamide (DMF) produces crystals of the compound (NH{sub 2}(CH{sub 3}){sub 2})[UO{sub 2}(HPO{sub 2}OH)(HPO{sub 3})]. This compound crystallizes in space group P2{sub 1}/n and consists of layers of uranyl pentagonal bipyramids that share equatorial vertices with phosphite units, separated by dimethylammonium. In contrast, the reaction of phosphorous acid and actinide oxides at 210 °C produces a viscous syrup. Subsequent dilution in solvents and use of standard solution-state methods results in the crystallization of two polymorphs of the actinide acid phosphites An(HPO{sub 2}OH){sub 4} (An=U, Th) and of the mixed acid phosphite–phosphite U(HPO{sub 3})(HPO{sub 2}OH){sub 2}(H{sub 2}O)·2(H{sub 2}O). ?- and ?-An(HPO{sub 2}OH){sub 4} crystallize in space groups C2/c and P2{sub 1}/n, respectively, and comprise a three-dimensional network of An{sup 4+} cations in square antiprismatic coordination corner-sharing with protonated phosphite units, whereas U(HPO{sub 3})(HPO{sub 2}OH){sub 2}(H{sub 2}O){sub 2}·(H{sub 2}O) crystallizes in a layered structure in space group Pbca that is composed of An{sup 4+} cations in square antiprismatic coordination corner-sharing with protonated phosphites and water ligands. We discuss our findings in using solid inorganic reagents to produce a solution-workable precursor from which solid-state compounds can be crystallized. - Graphical abstract: Reaction of UO{sub 3} and H{sub 3}PO{sub 3} at 100 °C and subsequent reaction with DMF produces crystals of (NH{sub 2}(CH{sub 3}){sub 2})[UO{sub 2}(HPO{sub 2}OH)(HPO{sub 3})] with a layered structure. Reaction of phosphorous acid and actinide oxides at 210 °C produces a viscous syrup and further solution-state reactions result in the crystallization of the actinide acid phosphites An(HPO{sub 2}OH){sub 4} (An=U, Th), with a three-dimensional network structure, and the mixed acid phosphite–phosphite U(HPO{sub 3})(HPO{sub 2}OH){sub 2}(H{sub 2}O){sub 2}·(H{sub 2}O) with a layered structure. - Highlights: • U(VI), U(IV) and Th(IV) phosphites were synthesized by solution-state methods. • A new uranyl phosphite structure is based upon uranyl phosphite anionic sheets. • New U and Th phosphites have framework structures.

  6. Solubility and spectroscopic studies of the interaction of palladium with simple carboxylic acids and fulvic acid at low temperature

    SciTech Connect (OSTI)

    Wood, S.A. (Univ. of Idaho, Moscow, ID (United States)); Tait, C.D.; Janecky, D.R. (Los Alamos National Laboratory, NM (United States)); Vlassopoulos, D. (California Institute of Technology, Pasadena, CA (United States))

    1994-01-01

    The interaction of Pd with some O-donor organic acid anions has been investigated using solubility measurements and a variety of spectroscopic techniques (UV-visible, Raman, FTIR, [sup 13]C NMR). Some of the ligands investigated (acetate, oxalate, and fulvic acid) occur naturally in relatively high concentrations, whereas others (phthalate and salicylate) serve as models of potential binding sites on humic and fulvic acids. Solubility measurements show that the presence of acetate, phthalate, salicylate, and fulvic acid (oxalate was not studied via solubility methods) can increase the mobility of Pd over various pH ranges, depending on the organic ligand. In the case of acetate, UV-visible and Raman spectroscopy provide strong evidence for the formation of electrostatically bound, possibly outer-sphere palladium acetate complexes. Oxalate was confirmed by UV-visible and FTIR spectroscopy to compete favorably with chloride (0.56 M NaCl) for Pd even at oxalate concentrations as low as 1 mM at pH = 6-7. Available data from the literature suggest that oxalate may have an influence on Pd mobility at free oxalate concentrations as low as 10[sup [minus]8]=10[sup [minus]9] M. UV-visible spectroscopy provides evidence of an initially rapid, followed by a slower, reaction between PdCl[sup 2-][sub 4] and o-phthalate ion. These findings lend support to the idea that similar bindings sites on fulvic acid may be capable of complexing and solubilizing Pd in the natural environment. Although thermodynamic data are required to fully quantify the extent, it is concluded that simple carboxylic acid anions and/or fulvic and humic acids should be capable of significantly enhancing Pd transport in the surficial environment by forming truly dissolved complexes. On the other hand, flocculation of fulvic/humic acids, owing to changing ionic strengths or pH, or adsorption of these acids onto mineral surfaces, may also provide effective means of immobilizing Pd.

  7. Get the LEAD Out!Most lead-containing autoclave tape has stripes running across at an angle ( / / / / / / ); if it has very faint text (the word "autoclaved"), it most likely is a lead-free alternative.

    E-Print Network [OSTI]

    Ford, James

    Get the LEAD Out!Most lead-containing autoclave tape has stripes running across at an angle ( / / / / / / ); if it has very faint text (the word "autoclaved"), it most likely is a lead-free alternative. ADDITIONAL Programs Office (650.723.0110) REPLACE lead-containing rolls of auto- clave tape with a non-lead containing

  8. Titanha Alloy Wwfacturbi: L'ivinien Hatioml Lead Camparw Box...

    Office of Legacy Management (LM)

    Llcm No. c- 3u3 xmAtdr cktebor 24, lp55 Titanha Alloy Wwfacturbi: L'ivinien Hatioml Lead Camparw Box C, Widgr, Station Uagara F&lb, New York Attention; &. steprmn F, Ijrbw...

  9. The impact of lead time on truckload transportation rates

    E-Print Network [OSTI]

    Caldwell, Erik R. (Erik Russell)

    2008-01-01

    The objective of this thesis was to analyze truckload shipment transactions in order to determine if rates are impacted by tender lead time, which is the amount of time between when a carrier is offered a load to when the ...

  10. Engineer Russ Feder leads development of diagnostic tools for...

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

    Engineer Russ Feder leads development of diagnostic tools for US ITER as physicist Dave Johnson shifts to part-time work By John Greenwald March 16, 2015 Tweet Widget Google Plus...

  11. The effects of part commonality on product development lead time

    E-Print Network [OSTI]

    Svensson, Nicholas, 1965-

    2005-01-01

    Nortel Networks, a leading global supplier of telecommunications equipment, is engaged in an increasingly competitive global market place. Within this market, Nortel Networks is positioning itself as the leader of global ...

  12. Mechanisms of lead transport in two intestinal epithelial cell lines 

    E-Print Network [OSTI]

    Dekaney, Christopher Matthew

    1996-01-01

    Toxic effects of lead (Pb) have been recognized for as long as the heavy metal has been used in society; however, Pb toxicity is still a problem today in humans and animals. The primary targets of Pb toxicity are the ...

  13. WPN 08-6: Interim Lead-Safe Weatherization Guidance

    Broader source: Energy.gov [DOE]

    To provide additional guidance for an LSW component of a health and safety plan. This guidance builds on the foundation provided in WPN 02-6, Weatherization Activities and Federal Lead Based Paint Regulations.

  14. Direct printing of lead zirconate titanate thin films

    E-Print Network [OSTI]

    Bathurst, Stephen, 1980-

    2008-01-01

    Thus far, use of lead zirconate titanate (PZT) in MEMS has been limited due to the lack of process compatibility with existing MEMS manufacturing techniques. Direct printing of thin films eliminates the need for photolithographic ...

  15. Leading change management projects in international cross-cultural settings

    E-Print Network [OSTI]

    Repoux, Charles

    2014-01-01

    In an increasingly complex world for Multinational Companies, it is difficult for managers to keep a firm grasp over the global projects they are tasked to implement. Many of them lead teams operating across country borders, ...

  16. Does Partisan Polarization Lead to Policy Gridlock in California?

    E-Print Network [OSTI]

    Kousser, Thad B

    2010-01-01

    10.2202/1944-4370.1071 Kousser: Does Partisan Polarization10.2202/1944-4370.1071 Kousser: Does Partisan PolarizationPolicy Volume 2, Issue 2 Does Partisan Polarization Lead to

  17. DOE Leading by Example with Green Button, American Energy Data...

    Open Energy Info (EERE)

    DOE Leading by Example with Green Button, American Energy Data Challenge contest 4 Home > Groups > OpenEI Community Central NickL's picture Submitted by NickL(127) Contributor 5...

  18. Leading Edge Spinning the Web of Cell Fate

    E-Print Network [OSTI]

    Corces, Victor G.

    Leading Edge Minireview Spinning the Web of Cell Fate Kevin Van Bortle1 and Victor G. Corces1,* 1 involved in spinning the web of cell fate. Chromatin at the Nuclear Lamina The nuclear lamina is a thin

  19. Method and apparatus for diagnosis of lead toxicity

    DOE Patents [OSTI]

    Rosen, John F. (Riverside, CT); Slatkin, Daniel N. (Bayside, NY); Wielopolski, Lucian (Shirley, NY)

    1989-01-01

    Improved methods and apparatus for in vivo measurement of the skeletal lead burden of a patient and for diagnosis of lead toxicity are disclosed. The apparatus comprises an x-ray tube emitting soft low energy x-rays from a silver anode, a polarizer for polarizing the emitted x-rays, and a detector for detecting photons fluoresced from atoms in the patient's tibia upon irradiation by the polarized x-rays. The fluoresced photons are spectrally analyzed to determine their energy distribution. Peaks indicating the presence of lead are identified if the patient has relatively high bone lead content. The data may be compared to data recorded with respect to a similar test performed on patients having also had the conventional EDTA chelation tests performed thereon in order to correlate the test results with respect to a particular patient to the conventionally accepted EDTA chelation test.

  20. Eliot Feibush leads new Princeton consortium to visualize Big...

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

    Eliot Feibush leads new Princeton consortium to visualize Big Data By John Greenwald April 22, 2015 Tweet Widget Google Plus One Share on Facebook Eliot Feibush (Photo by Elle...

  1. Lead IT Specialist (Systems Analysis/Systems Administration)

    Broader source: Energy.gov [DOE]

    The incumbent in this position will serve as a Lead IT Specialist (Systems Analysis/Systems Administration) in the Data Center Services organization of Information Technology. The Data Center...

  2. Electroluminescence from Organometallic Lead Halide Perovskite - Conjugated Polymer Diodes

    E-Print Network [OSTI]

    Sadhanala, Aditya; Kumar, Abhishek; Pathak, Sandeep; Rao, Akshay; Steiner, Ullrich; Greenham, Neil C.; Snaith, Henry J.; Friend, Richard H.

    2015-02-19

    Organometallic lead perovskite-based solar cells can be converted to light-emitting diodes by engineering the current density. Diodes are fabricated with adjacent perovskite and conjugated polymer layers using orthogonal solvents. Under forward bias...

  3. Cornell dots research collaboration leads to $10M cancer center...

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

    Cornell dots research collaboration leads to 10M cancer center September 24th, 2015 ProvidedWiesner Lab A rendering of the molecular structure of a Cornell dot, which is...

  4. Characterization of phase evolution during lead immobilization by synthetic hydroxyapatite

    SciTech Connect (OSTI)

    Mavropoulos, Elena [CBPF, Rio de Janeiro (Brazil); Rocha, Nilce C.C. [IQ/UFRJ, Rio de Janeiro (Brazil); Moreira, Josino C. [ENSP/FIOCRUZ, Rio de Janeiro (Brazil); Rossi, Alexandre M. [CBPF, Rio de Janeiro (Brazil); Soares, Gloria A. [Metallurgical and Materials Engineering Department, Federal University of Rio de Janeiro, P.O. Box 68505, Rio de Janeiro, 21941-972, RJ (Brazil)]. E-mail: Gloria@ufrj.br

    2004-09-15

    Immobilization of toxic metals by calcium phosphates is a promising technology for treating contaminated soil, water and wastes. A detailed study on the mechanisms of lead immobilization by hydroxyapatite has been carried out using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). For this, synthetic hydroxyapatite powder were submitted to a sorption process through exposure to an aqueous solution containing 917 mg L{sup -1} of lead for times that varied from 3 min to 54 h. The results obtained reinforce the hypothesis that hydroxypyromorphite formation is the end of a kinetic process in which the hydroxyapatite crystals are continuously dissolved and recrystallized in order to form more stable structures with higher lead content. Consequently, the use of calcium phosphates to immobilize lead ions seems to be technically viable.

  5. Microfluidic devices and Block Copolymer Nanolithography Lead: D. Angelescu

    E-Print Network [OSTI]

    Baudoin, Geneviève

    Microfluidic devices and Block Copolymer Nanolithography Lead: D. Angelescu Permanent members: B, X. Yuan One of our activities in microfluidics involves the design of a microfluidic system which measures pressure drops along microfluidic channels involving different types of constrictions using

  6. Acid Fracture and Fracture Conductivity Study of Field Rock Samples 

    E-Print Network [OSTI]

    Underwood, Jarrod

    2013-11-15

    Acid fracturing is a well stimulation strategy designed to increase the productivity of a producing well. The parameters of acid fracturing and the effects of acid interaction on specific rock samples can be studied experimentally. Acid injection...

  7. Micro-electro-mechanical systems phosphoric acid fuel cell

    DOE Patents [OSTI]

    Sopchak, David A. (Livermore, CA); Morse, Jeffrey D. (Martinez, CA); Upadhye, Ravindra S. (Pleasanton, CA); Kotovsky, Jack (Oakland, CA); Graff, Robert T. (Modesto, CA)

    2010-08-17

    A phosphoric acid fuel cell system comprising a porous electrolyte support, a phosphoric acid electrolyte in the porous electrolyte support, a cathode electrode contacting the phosphoric acid electrolyte, and an anode electrode contacting the phosphoric acid electrolyte.

  8. Micro-electro-mechanical systems phosphoric acid fuel cell

    DOE Patents [OSTI]

    Sopchak, David A. (Livermore, CA); Morse, Jeffrey D. (Martinez, CA); Upadhye, Ravindra S. (Pleasanton, CA); Kotovsky, Jack (Oakland, CA); Graff, Robert T. (Modesto, CA)

    2010-12-21

    A phosphoric acid fuel cell system comprising a porous electrolyte support, a phosphoric acid electrolyte in the porous electrolyte support, a cathode electrode contacting the phosphoric acid electrolyte, and an anode electrode contacting the phosphoric acid electrolyte.

  9. Lead Coolant Test Facility - Design Concept and Requirements

    SciTech Connect (OSTI)

    Soli Khericha, Ph. D.

    2011-08-01

    The Idaho National Laboratory prepared a preliminary technical and functional requirements (T&FR), thermal hydraulic design and cost estimate for a lead coolant test facility. The purpose of this small scale facility is to simulate lead coolant fast reactor (LFR) coolant flow in an open lattice geometry core using seven electrical rods and liquid lead or lead-bismuth eutectic. Based on review of current world lead or lead-bismuth test facilities and research need listed in the Generation IV Roadmap, five broad areas of requirements are identified in this paper: (1) Develop and Demonstrate Feasibility of Submerged Heat Exchanger; (2) Develop and Demonstrate Open-lattice Flow in Electrically Heated Core; (3) Develop and Demonstrate Chemistry Control; (4) Demonstrate Safe Operation; and (5) Provision for Future Testing Across these five broad areas are supported by twenty-one specific requirements. The purpose of this facility is to focus the lead fast reactor community domestically on the requirements for the next unique state of the art test facility. The facility thermal hydraulic design is based on the maximum simulated core power using seven electrical heater rods of 420 kW; average linear heat generation rate of 300 W/cm. The core inlet temperature for liquid lead or Pb/Bi eutectic is 4200C. The design includes approximately seventy-five data measurements such as pressure, temperature, and flow rates. The preliminary estimated cost of construction of the facility is $3.7M (in 2006 $). It is also estimated that the facility will require two years to be constructed and ready for operation.

  10. Trace determination of lead by helium-4 activation analysis 

    E-Print Network [OSTI]

    Vargas Bernal, Maria E.

    1984-01-01

    TRACE DETERMINATION OF LEAD BY HELIUM-4 ACTIVATION ANALYSIS A Thesis by MARIA E. VARGAS BERNAL Submitted to the Graduate College of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August... 1984 Major Subject: Chemistry TRACE DETERMINATION OF LEAD BY HELIUM-4 ACTIVATION ANALYSIS A Thesis by MARIA E. VARGAS BERNAL Approved as to style and format by: Emile A. Schweikert (Chairman of Committee) Marvin W. Rowe (Member) Gerald A. Sc...

  11. Forecasting potential project risks through leading indicators to project outcome 

    E-Print Network [OSTI]

    Choi, Ji Won

    2007-09-17

    for the degree of MASTER OF SCIENCE May 2007 Major Subject: Civil Engineering FORECASTING POTENTIAL PROJECT RISKS THROUGH LEADING INDICATORS TO PROJECT OUTCOME A Thesis by JI WON CHOI... Guikema Head of Department, David Rosowsky May 2007 Major Subject: Civil Engineering iii ABSTRACT Forecasting Potential Project Risks through Leading Indicators to Project Outcome. (May 2007) Ji Won Choi, B.S., Han-Yang University...

  12. Glass composition development for stabilization of lead based paints

    SciTech Connect (OSTI)

    Marra, J.C.

    1996-10-01

    Exposure to lead can lead to adverse health affects including permanent damage to the central nervous system. Common means of exposure to lead are from ingestion of lead paint chips or breathing of dust from deteriorating painted surfaces. The U.S. Army has over 101 million square feet of buildings dating to World War II or earlier. Many of these structures were built before the 1978 ban on lead based paints. The U.S. Army Corps of Engineers CERL is developing technologies to remove and stabilize lead containing organic coatings. Promising results have been achieved using a patented flame spray process that utilizes a glass frit to stabilize the hazardous constituents. When the glass frit is sprayed onto the paint containing substrate, differences in thermal expansion coefficients between the frit and the paint results in spalling of the paint from the substrate surface. The removed fragments are then collected and remelted to stabilize the hazardous constituents and allow for disposal as non-hazardous waste. Similar successful results using a patented process involving microwave technology for paint removal have also been achieved. In this process, the painted surface is coated with a microwave coupling compound that when exposed to microwave energy results in the spalling of the hazardous paint from the surface. The fragments can again be accumulated and remelted for stabilization and disposal.

  13. MERCURY AND LEAD SAMPLING AT MINNESOTA POWER'S BOSWELL ENERGY CENTER

    SciTech Connect (OSTI)

    Dennis L. Laudal

    2000-08-01

    At the request of the Minnesota Power, Inc., the Energy & Environmental Research Center (EERC) sampled for lead at the stack (or duct directly leading to the stack) for three units at the Boswell Energy Center. All sampling was done in triplicate using U.S. Environmental Protection Agency (EPA) Method 12, with sampling procedures following EPA Methods 1 through 4. During the test program, lead sampling was done using EPA Method 12 in the duct at the outlet of the baghouse serving Unit 2 and the duct at the outlet of the wet particulate scrubber serving Unit 3. For Unit 4, lead sampling was done at the stack. The specific objective for the project was to determine the concentration of lead in the flue gas being emitted into the atmosphere from the Boswell Energy Center. The test program was performed during the period of May 8 through 11, 2000. This report presents the test data, sample calculations, and results, and a discussion of the lead sampling performed at the Boswell Energy Center. The detailed test data and test results, raw test data, process data, laboratory reports, and equipment calibration records are provided in Appendices A, B, and C.

  14. Vitrification of lead-based paint using thermal spray

    SciTech Connect (OSTI)

    Kumar, A.; Covey, S.W.; Lattimore, J.L.; Boy, J.H.

    1996-12-31

    Lead-based paint (LBP) primers have been used to protect steel structures from corrosion. Abrasive blasting is currently used to remove old LBP. During abrasive blasting a containment structure is required to keep the hazardous lead dust from contaminating air, soil, or water. A thermal spray vitrification (TSV) process to remove LBP was developed. Dried glass powder is melted in the high temperature flame of the thermal spray torch. When the glass strikes the substrate it is molten and reacts with the paint on the substrate. The organic components of the paint are pyrolyzed, while the lead ions are trapped on the surface of glass. The quenching stresses in the glass cause the glass to crack and spall off the substrate. The crumbled glass fragments can be collected and remelted, immobilizing the lead ions within the glass network, thereby preventing leaching. The resulting glass can be disposed of as non-hazardous waste. The process is dust-free, eliminating the need for containment. The volume of residue waste is less than for abrasive blasting and is nonhazardous. The concept and techniques of using the thermal spray vitrification process for the removal and the containment of lead from a section of a bridge containing lead-based paint have been successfully demonstrated.

  15. Movement of outdoor particles to the indoor environment: An analysis of the Arnhem Lead Study

    SciTech Connect (OSTI)

    Layton, D.W. [Lawrence Livermore National Lab., CA (United States); Thatcher, T.L. [Univ. of California, Berkeley, CA (United States). Dept. of Civil Engineering

    1995-03-01

    This paper analyzes the role of soil tracking as a source of indoor particles and quantifies key parameters influencing the transport of soil-derived particles (resuspension rates for particulate matter on floors, deposition velocities of suspended particles in indoor and outdoor air). The paper begins with a brief review of studies of particle transport processes and presents a simple model for studying the transport of particles in the indoor environment. The model is used to examine data on Pb distributions in the indoor and outdoor environments of community adjacent to a secondary lead smelter.

  16. Double stranded nucleic acid biochips

    DOE Patents [OSTI]

    Chernov, Boris; Golova, Julia

    2006-05-23

    This invention describes a new method of constructing double-stranded DNA (dsDNA) microarrays based on the use of pre-synthesized or natural DNA duplexes without a stem-loop structure. The complementary oligonucleotide chains are bonded together by a novel connector that includes a linker for immobilization on a matrix. A non-enzymatic method for synthesizing double-stranded nucleic acids with this novel connector enables the construction of inexpensive and robust dsDNA/dsRNA microarrays. DNA-DNA and DNA-protein interactions are investigated using the microarrays.

  17. ARM - Lesson Plans: Acid Rain

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments?govInstrumentsnoaacrnBarrow, Alaska Outreach Home Room News Publications TraditionalPlans OutreachAcid

  18. The design of a functionally graded composite for service in high temperature lead and lead-bismuth cooled nuclear reactors

    E-Print Network [OSTI]

    Short, Michael Philip

    2010-01-01

    A material that resists lead-bismuth eutectic (LBE) attack and retains its strength at 700°C would be an enabling technology for LBE-cooled reactors. No single alloy currently exists that can economically meet the required ...

  19. Effects of Relativity Lead to"Warp Speed" Computations

    SciTech Connect (OSTI)

    Vay, J.-L.

    2007-11-01

    A scientist at Lawrence Berkeley National Laboratory has discovered that a previously unnoticed consequence of Einstein's special theory of relativity can lead to speedup of computer calculations by orders of magnitude when applied to the computer modeling of a certain class of physical systems. This new finding offers the possibility of tackling some problems in a much shorter time and with far more precision than was possible before, as well as studying some configurations in every detail for the first time. The basis of Einstein's theory is the principle of relativity, which states that the laws of physics are the same for all observers, whether the 'observer' is a turtle 'racing' with a rabbit, or a beam of particles moving at near light speed. From the invariance of the laws of physics, one may be tempted to infer that the complexity of a system is independent of the motion of the observer, and consequently, a computer simulation will require the same number of mathematical operations, independently of the reference frame that is used for the calculation. Length contraction and time dilation are well known consequences of the special theory of relativity which lead to very counterintuitive effects. An alien observing human activity through a telescope in a spaceship traveling in the Vicinity of the earth near the speed of light would see everything flattened in the direction of propagation of its spaceship (for him, the earth would have the shape of a pancake), while all motions on earth would appear extremely slow, slowed almost to a standstill. Conversely, a space scientist observing the alien through a telescope based on earth would see a flattened alien almost to a standstill in a flattened spaceship. Meanwhile, an astronaut sitting in a spaceship moving at some lower velocity than the alien spaceship with regard to earth might see both the alien spaceship and the earth flattened in the same proportion and the motion unfolding in each of them at the same speed. Let us now assume that each protagonist (the alien, the space scientist and the astronaut) is to run a computer simulation describing the motion of all of them in a single calculation. In order to model a physical system on a computer, scientists often divide space and time into small chunks. Since the computer must calculated some things for each chunk, having a large system containing numerous small chunks translates to long calculations requiring many computational steps on supercomputers. Let us assume that each protagonist of our intergalactic story uses the space and time slicing as described and chooses to perform the calculation in its own frame of reference. For the alien and the space scientist, the slicing of space and time results in an exceedingly large number of chunks, due to the wide disparity of spatial and time scales needed to describe both their own environment and motion together with the other extremely flattened environment and slowed motion. Since the disparity of scales is reduced for the astronaut, who is traveling at an intermediate velocity, the number of computer operations needed to complete the calculation in his frame of reference will be significantly lower, possibly by many orders of magnitude. Analogously, the new discovery at Lawrence Berkeley National Laboratory shows that there exists a frame of reference minimizing the number of computational operations needed for studying the interaction of beams of particles or light (lasers) interacting at, or near, light speed with other particles or with surrounding structures. Speedups ranging from ten to a million times or more are predicted for the modeling of beams interacting with electron clouds, such as those in the upcoming Large Hadron Collider 'atom smasher' accelerator at CERN (Switzerland), and in free electron lasers and tabletop laser wakefield accelerators. The discovery has surprised many physicists and was received initially with much skepticism. It sounded too much like a 'free lunch'. Yet, the demonstration of a speedup of a stunning one thousand times in a te

  20. Lead Exposure: A Contributing Cause of the Current Breast Cancer Epidemic in Nigerian Women

    E-Print Network [OSTI]

    Alatise, Olusegun I.; Schrauzer, Gerhard N.

    2010-01-01

    Keywords Breast cancer . Lead . Cadmium . Tin . Chromium .selenium and low doses of lead on mammary tumor development2001) Prevalence of elevated blood lead levels in Nigerian