Sample records for development wet chemistry

  1. Conventional Wet Chemistry ICP-AES Development for RPP-WTP AY-102/C-106 Melter Feed Slurry Simulants - A Statistical Review of the Results from the Phase I Study

    SciTech Connect (OSTI)

    Edwards, Thomas B.

    2005-04-30T23:59:59.000Z

    The River Protection Project (RPP)--Hanford Waste Treatment and Immobilization Plant (WTP) is to prepare and process High Level Waste (HLW) streams into glass waste forms that will meet HLW disposal requirements. Samples of HLW sludge and samples of this sludge mixed with glass-forming chemicals are to be taken and analyzed for process control. Glass characterization from the melter is not included in the scope. The development of viable analytical protocols to provide the required elemental analyses of these samples with rapid turnaround times (before and after addition of the glass-forming chemicals) has been defined as an RPP statement of work for the Analytical Development Section (ADS) of the Savannah River National Laboratory (SRNL). Wet chemistry is serving as the baseline comparison to laser ablation for method development. One of the simulants used in this study by ADS was AY-102/C-106 melter feed slurry simulant, a simulant used to represent HLW samples after the addition of glass-forming chemicals. Several different dissolution methods were used by ADS in preparing samples of this simulant for elemental analyses by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). The measurements generated by this process were provided to SRNL's Statistical Consulting Section (SCS) for analysis. The measurement data generated for samples of the RPP-WTP AY-102/C-106 melter feed slurry simulant are presented in this report and the different approaches used to prepare the samples are statistically compared. Comparisons among three of the dissolution methods are highlighted in this analysis. The methods are: sodium peroxide fusion in nickel crucibles, acidification with HNO{sub 3}/HCL at room temperature, and cesium carbonate fusion in zirconium crucibles. A summary table of the measurement averages generated by the three methods is presented. The cesium carbonate fusion method yielded measurements with significantly different mean values from the other two preparation methods for several of the elements.

  2. Mars Surveyor Program '01 Mars Environmental Compatibility Assessment wet chemistry lab

    E-Print Network [OSTI]

    Kounaves, Samuel P.

    Mars Surveyor Program '01 Mars Environmental Compatibility Assessment wet chemistry lab: A sensor] The Mars Environmental Compatibility Assessment (MECA) instrument was designed, built, and flight qualified as the potential habitability of its regolith. INDEX TERMS: 6225 Planetology: Solar System Objects: Mars; 6297

  3. THE MARS ENVIRONMENTAL COMPATIBILITY ASSESSMENT (MECA) WET CHEMISTRY EXPERIMENT ON THE MARS '01 LANDER

    E-Print Network [OSTI]

    Kounaves, Samuel P.

    THE MARS ENVIRONMENTAL COMPATIBILITY ASSESSMENT (MECA) WET CHEMISTRY EXPERIMENT ON THE MARS '01, Morgantown, WV, 26507 Introduction. The Mars Environmental Compatibility Assessment (MECA) is an instrument of acquiring information relevant to HEDS, the WCL will assess the chemical composition and properties

  4. Development of a Wet Logistics System for Bulk Corn Stover

    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 DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E T A * S HBatteries1000: Development of a Wet Logistics

  5. Nitrogen-doped TiO{sub 2} nanotubes with enhanced photocatalytic activity synthesized by a facile wet chemistry method

    SciTech Connect (OSTI)

    Geng Jiaqing; Yang Dong; Zhu Juhong; Chen Daimei [Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072 (China); Jiang Zhongyi [Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072 (China)], E-mail: zhyjiang@tju.edu.cn

    2009-01-08T23:59:59.000Z

    Nitrogen-doped TiO{sub 2} nanotubes with enhanced photocatalytic activity were synthesized using titanate nanotubes as raw material by a facile wet chemistry method. The resulting nanotubes were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR) spectroscopy, and UV-vis absorption spectroscopy, etc. The photocatalytic activity of nitrogen-doped TiO{sub 2} nanotubes was evaluated by the decomposition of methylene blue under artificial solar light. And it was found that nitrogen-doped TiO{sub 2} nanotubes exhibited much higher photocatalytic activity than undoped titanate nanotubes.

  6. Rye Patch geothermal development, hydro-chemistry of thermal...

    Open Energy Info (EERE)

    development, hydro-chemistry of thermal water applied to resource definition Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Rye Patch geothermal...

  7. Development studies for a novel wet oxidation process. Phase 2

    SciTech Connect (OSTI)

    NONE

    1994-07-01T23:59:59.000Z

    DETOX{sup SM} is a catalyzed wet oxidation process which destroys organic materials in an acidic water solution of iron at 373 to 473 K. The solution can be used repeatedly to destroy great amounts of organic materials. Since the process is conducted in a contained vessel, air emissions from the process can be well controlled. The solution is also capable of dissolving and concentrating many heavy and radioactive metals for eventual stabilization and disposal. The Phase 2 effort for this project is site selection and engineering design for a DETOX demonstration unit. Site selection was made using a set of site selection criteria and evaluation factors. A survey of mixed wastes at DOE sites was conducted using the Interim Mixed Waste Inventory Report. Sites with likely suitable waste types were identified. Potential demonstration sites were ranked based on waste types, interest, regulatory needs, scheduling, ability to provide support, and available facilities. Engineering design for the demonstration unit is in progress and is being performed by Jacobs Applied Technology. The engineering design proceeded through preliminary process flow diagrams (PFDs), calculation of mass and energy balances for representative waste types, process and instrumentation diagrams (P and IDs), preparation of component specifications, and a firm cost estimate for fabrication of the demonstration unit.

  8. Development studies for a novel wet oxidation process

    SciTech Connect (OSTI)

    Dhooge, P.M.; Hakim, L.B.

    1994-01-01T23:59:59.000Z

    A catalytic wet oxidation process (DETOX), which uses an acidic iron solution to oxidize organic compounds to carbon dioxide, water, and other simple products, was investigated as a potential method for the treatment of multicomponent hazardous and mixed wastes. The organic compounds picric acid, poly(vinyl chloride), tetrachlorothiophene, pentachloropyridine, Aroclor 1260 (a polychlorinated biphenyl), and hexachlorobenzene were oxidized in 125 ml reaction vessels. The metals arsenic, barium, beryllium, cadmium, cerium (as a surrogate for plutonium), chromium, lead, mercury, neodymium (as a surrogate for uranium), nickel, and vanadium were tested in the DETOX solution. Barium, beryllium, cerium, chromium, mercury, neodymium, nickel, and vanadium were all found to be very soluble (>100 g/l) in the DETOX chloride-based solution. Arsenic, barium, cadmium, and lead solubilities were lower. Lead could be selectively precipitated from the DETOX solution. Chromium(VI) was reduced to relatively non-toxic chromium(III) by the solution. Six soils were contaminated with arsenic, barium, beryllium, chromium, lead, and neodymium oxides at approximately 0.1% by weight, and benzene, trichloroethene, mineral oil, and Aroclor 1260 at approximately 5% by weight total, and 5.g amounts treated with the DETOX solution in unstirred 125. ml reaction bombs. It is felt that soil treatment in a properly designed system is entirely possible despite incomplete oxidation of the less volatile organic materials in these unstirred tests.

  9. Analysis Of Post-Wet-Chemistry Heat Treatment Effects On Nb SRF Surface Resistance

    SciTech Connect (OSTI)

    Dhakal, Pashupati; Ciovati, Gianluigi; Kneisel, Peter K.; Myneni, Ganapati Rao

    2014-02-01T23:59:59.000Z

    Most of the current research in superconducting radio frequency (SRF) cavities is focused on ways to reduce the construction and operating cost of SRF-based accelerators as well as on the development of new or improved cavity processing techniques. The increase in quality factors is the result of the reduction of the surface resistance of the materials. A recent test on a 1.5 GHz single cell cavity made from ingot niobium of medium purity and heat treated at 1400 deg C in a ultra-high vacuum induction furnace resulted in a residual resistance of ~ 1n{Omega} and a quality factor at 2.0 K increasing with field up to ~ 5×10{sup 10} at a peak magnetic field of 90 mT. In this contribution, we present some results on the investigation of the origin of the extended Q{sub 0}-increase, obtained by multiple HF rinses, oxypolishing and heat treatment of ?all Nb? cavities.

  10. Calcination/dissolution chemistry development Fiscal year 1995

    SciTech Connect (OSTI)

    Delegard, C.H.

    1995-09-01T23:59:59.000Z

    The task {open_quotes}IPC Liaison and Chemistry of Thermal Reconstitution{close_quotes} is a $300,000 program that was conducted in Fiscal Year (FY) 1995 with U.S. Department of Energy (DOE) Office of Research and Development (EM-53) Efficient Separations and Processing Crosscutting Program supported under technical task plan (TTP) RL4-3-20-04. The principal investigator was Cal Delegard of the Westinghouse Hanford Company (WHC). The task encompassed the following two subtasks related to the chemistry of alkaline Hanford Site tank waste: (1) Technical Liaison with the Institute of Physical Chemistry of the Russian Academy of Science (IPC/RAS) and its research into the chemistry of transuranic elements (TRU) and technetium (Tc) in alkaline media. (2) Laboratory investigation of the chemistry of calcination/dissolution (C/D) (or thermal reconstitution) as an alternative to the present reference Hanford Site tank waste pretreatment flowsheet, Enhanced Sludge Washing (ESW). This report fulfills the milestone for the C/D subtask to {open_quotes}Provide End-of-Year Report on C/D Laboratory Test Results{close_quotes} due 30 September 1995. A companion report, fulfilling the milestone to provide an end-of-year report on the IPC/RAS liaison, also has been prepared.

  11. Chemistry

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

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  12. Chemistry

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMForms AboutRESEARCH CAPABILITIES Thematerials | CenterChemistry

  13. Chemistry {ampersand} Materials Science progress report summary of selected research and development topics, FY97

    SciTech Connect (OSTI)

    Newkirk, L.

    1997-12-01T23:59:59.000Z

    This report contains summaries of research performed in the Chemistry and Materials Science division. Topics include Metals and Ceramics, High Explosives, Organic Synthesis, Instrument Development, and other topics.

  14. DEVELOPMENT OF WET-OXIDATION TREATMENT SYSTEM FOR FILTER BACKWASH SLUDGE AND ION EXCHANGE RESINS

    SciTech Connect (OSTI)

    Miyamoto, T.; Motoyama, M.; Shibuya, M.; Wada, H.; Yamazaki, K.

    2003-02-27T23:59:59.000Z

    Decomposition of organic compounds contained in filter backwash sludge and spent ion exchange resins is considered effective in reducing the waste volume. A system using the wet-oxidation process has been studied for the treatment of the sludge and resins stored at Tsuruga Power Station Unit 1, 357MWe BWR, owned by The Japan Atomic Power Company. Compared with various processes for treating sludge and resin, the wet-oxidation system is rather simple and the process conditions are mild. Waste samples collected from storage tanks were processed by wet-oxidation and appropriate decomposition of the organic compounds was verified. After the decomposition the residue can be solidified with cement or bitumen for final disposal. When compared with direct solidification without decomposition, the number of waste packages can be reduced by a factor of a few dozens for the sludge and three for the resin. Additional measures for conditioning secondary waste products have also been studied, and their applicability to the Tsuruga Power Station was verified. Some of the conditions studied were specific to the Tsuruga Power Station, but it is expected that the system will provide an effective solution for sludge and resin treatment at other NPPs.

  15. Temperature Modeling for Reaction Development in Microwave-Assisted Chemistry

    E-Print Network [OSTI]

    Yakovlev, Vadim

    of exposure of the reactants to the electromagnetic (EM) field. The microwave parts of those systems are-scale resonator-type reactor in a 3D model capable of monitoring electromagnetic and thermal processes field. I. INTRODUCTION Microwave-assisted chemistry has recently emerged as a rapidly growing field

  16. Chemical Processing in High-Pressure Aqueous Environments. 7. Process Development for Catalytic Gasification of Wet Biomass

    E-Print Network [OSTI]

    Gasification of Wet Biomass Feedstocks Douglas C. Elliott,* Gary G. Neuenschwander, Todd R. Hart, R. Scott the preliminary results of continuous-flow reactor studies with wet biomass feedstocks using new catalyst systems of con- tinuous reactor tests with biomass feedstocks provide preliminary short-term processing results,8

  17. FULL-SCALE TESTING OF ENHANCED MERCURY CONTROL TECHNOLOGIES FOR WET FGD SYSTEMS

    SciTech Connect (OSTI)

    D.K. McDonald; G.T. Amrhein; G.A. Kudlac; D. Madden Yurchison

    2003-05-07T23:59:59.000Z

    Wet flue gas desulfurization (wet FGD) systems are currently installed on about 25% of the coal-fired utility generating capacity in the U.S., representing about 15% of the number of coal-fired units. Depending on the effect of operating parameters such as mercury content of the coal, form of mercury (elemental or oxidized) in the flue gas, scrubber spray tower configuration, liquid-to-gas ratio, and slurry chemistry, FGD systems can provide cost-effective, near-term mercury emissions control options with a proven history of commercial operation. For boilers already equipped with FGD systems, the incremental cost of any vapor phase mercury removal achieved is minimal. To be widely accepted and implemented, technical approaches that improve mercury removal performance for wet FGD systems should also have low incremental costs and have little or no impact on operation and SO{sub 2} removal performance. The ultimate goal of the Full-scale Testing of Enhanced Mercury Control for Wet FGD Systems Program was to commercialize methods for the control of mercury in coal-fired electric utility systems equipped with wet flue gas desulfurization (wet FGD). The program was funded by the U.S. Department of Energy's National Energy Technology Laboratory, the Ohio Coal Development Office within the Ohio Department of Development, and Babcock & Wilcox. Host sites and associated support were provided by Michigan South Central Power Agency (MSCPA) and Cinergy. Field-testing was completed at two commercial coal-fired utilities with wet FGD systems: (1) MSCPA's 55 MW{sub e} Endicott Station and (2) Cinergy's 1300 MW{sub e} Zimmer Station. Testing was conducted at these two locations because of the large differences in size and wet scrubber chemistry. Endicott employs a limestone, forced oxidation (LSFO) wet FGD system, whereas Zimmer uses Thiosorbic{reg_sign} Lime (magnesium enhanced lime) and ex situ oxidation. Both locations burn Ohio bituminous coal.

  18. Development of an advanced concept of dry/wet cooling of power-generating plants. Interim report

    SciTech Connect (OSTI)

    Johnson, B.M. (ed.)

    1981-02-01T23:59:59.000Z

    A large-scale test of dry/wet cooling using the ammonia phase-charge system, designated the Advanced Concepts Test, is being constructed at Pacific Gas and Electric Company's Kern Station at Bakersfield. The test facility described in this document will be capable of condensing 60,000 lbs/h of steam from a small house turbine and will use only 25% of the water normally required to reject this heat load in evaporative cooling towers. Two different modes of combining dry and evaporative cooling are being tested. One uses deluge cooling in which water is allowed to flow over the heat exchanger on hot days. The other uses a separate evaporative condenser in parallel to the dry heat exchanger. The design of the cooling system and major components is described and the technology developed to support the design is summarized. The facility is scheduled for completion April 1981. An extensive period of operational acceptance tests will follow. Research testing is anticipated to begin about the middle of 1981.

  19. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Life Cycle Assessment of Chemistry Building North Block

    E-Print Network [OSTI]

    ­ the UBC LCA Project ­ which aims to support the development of the field of life cycle assessment (LCA at rob.sianchuk@gmail.com #12;Running head: Life Cycle Assessment of Chemistry Building North Block CIVL 498 ­ Life Cycle Assess Life Cycle Assessment of Chemistry Building North Block Minge Weng November 18

  20. Categorical Exclusion 4497: Lithium Wet Chemistry Project

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

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  1. Chemical Processing in High-Pressure Aqueous Environments. 7. Process Development for Catalytic Gasification of Wet Biomass Feedstocks

    SciTech Connect (OSTI)

    Elliott, Douglas C.; Neuenschwander, Gary G.; Hart, Todd R.; Butner, Scott S.; Zacher, Alan H.; Engelhard, Mark H.; Young, James S.; McCready, David E.

    2004-07-01T23:59:59.000Z

    Through the use of a metal catalyst, gasification of wet biomass can be accomplished with high levels of carbon conversion to gas at relatively low temperature (350 C). In the pressurized-water environment (20 MPa) near-total conversion of the organic structure of biomass to gases has been accomplished in the presence of a ruthenium metal catalyst. The process is essentially steam reforming as there is no added oxidizer or reagent other than water. In addition, the gas produced is a medium-heating value gas due to the synthesis of high-levels of methane, as dictated by thermodynamic equilibrium. Biomass trace components cause processing difficulties using the fixed catalyst bed tubular reactor system. Results are described for both bench-scale and scaled-up reactor systems.

  2. 147Chemistry Chemistry (Chem)

    E-Print Network [OSTI]

    Dresden, Gregory

    147Chemistry Chemistry (Chem) Bayly Foundation PROFESSORS FRANCE, PLEVA ASSOCIATE PROFESSORS ALty A student may complete only one of the majors listed in the Department of Chemistry. The major in chemistry leading to a Bachelor of Arts degree requires completion of 44 credits as follows: 1. Chemistry 111, 112

  3. Dynamic wetting on superhydrophobic surfaces: Droplet impact and wetting hysteresis

    E-Print Network [OSTI]

    Smyth, Katherine M.

    We study the wetting energetics and wetting hysteresis of sessile and impacting water droplets on superhydrophobic surfaces as a function of surface texture and surface energy. For sessile drops, we find three wetting ...

  4. Marquette University Department of Chemistry

    E-Print Network [OSTI]

    Reid, Scott A.

    Analysis Inorganic Chemistry Lecture Inorganic Synthesis Lab #12;Our Curriculum Physical Chemistry Lecture.... Directly influence the lives of others? Develop new materials with enhanced flame- retardant properties

  5. Breakdown in the Wetting Transparency of Graphene

    E-Print Network [OSTI]

    Shih, Chih-Jen

    We develop a theory to model the van der Waals interactions between liquid and graphene, including quantifying the wetting behavior of a graphene-coated surface. Molecular dynamics simulations and contact angle measurements ...

  6. Development of statistical wet weather model to evaluate frictional properties at the pavement-tire interface on hot mix asphalt concrete

    E-Print Network [OSTI]

    Bedi, Harpreet

    2001-01-01T23:59:59.000Z

    Skid resistance on wet pavements is influenced by friction at the tire-pavement interface as well as overall hot mix asphalt (HMA) performance. It is important to control aggregate, asphalt, and mix properties to achieve desirable frictional...

  7. Adam Benoit Medicinal Chemistry

    E-Print Network [OSTI]

    Thomas, David D.

    #12;Adam Benoit Medicinal Chemistry Ph.D. Thesis Title: Synthesis and Evaluation of Acridine Country: United States #12;Amit Gangar Medicinal Chemistry Ph.D. Thesis Title: Design and Development Wagner Home Country: India #12;Dan Wang Medicinal Chemistry M.S. Thesis Title: Synthesis and Evaluation

  8. Elucidating the mysteries of wetting.

    SciTech Connect (OSTI)

    Webb, Edmund Blackburn, III (,; ); Bourdon, Christopher Jay; Grillet, Anne Mary; Sackinger, Philip A.; Grest, Gary Stephen; Emerson, John Allen; Ash, Benjamin Jesse; Heine, David R.; Brooks, Carlton, F.; Gorby, Allen D.

    2005-11-01T23:59:59.000Z

    Nearly every manufacturing and many technologies central to Sandia's business involve physical processes controlled by interfacial wetting. Interfacial forces, e.g. conjoining/disjoining pressure, electrostatics, and capillary condensation, are ubiquitous and can surpass and even dominate bulk inertial or viscous effects on a continuum level. Moreover, the statics and dynamics of three-phase contact lines exhibit a wide range of complex behavior, such as contact angle hysteresis due to surface roughness, surface reaction, or compositional heterogeneities. These thermodynamically and kinetically driven interactions are essential to the development of new materials and processes. A detailed understanding was developed for the factors controlling wettability in multicomponent systems from computational modeling tools, and experimental diagnostics for systems, and processes dominated by interfacial effects. Wettability probed by dynamic advancing and receding contact angle measurements, ellipsometry, and direct determination of the capillary and disjoining forces. Molecular scale experiments determined the relationships between the fundamental interactions between molecular species and with the substrate. Atomistic simulations studied the equilibrium concentration profiles near the solid and vapor interfaces and tested the basic assumptions used in the continuum approaches. These simulations provide guidance in developing constitutive equations, which more accurately take into account the effects of surface induced phase separation and concentration gradients near the three-phase contact line. The development of these accurate models for dynamic multicomponent wetting allows improvement in science based engineering of manufacturing processes previously developed through costly trial and error by varying material formulation and geometry modification.

  9. 148 Chemistry/Chinese Chemistry 347 (3)--Advanced Organic Chemistry

    E-Print Network [OSTI]

    Dresden, Gregory

    148 Chemistry/Chinese Chemistry 347 (3)--Advanced Organic Chemistry Prerequisite: Chemistry 242,syntheticmethodology,mod- ernsyntheticreactions,protectinggroups,naturalprod- uctssynthesis,andcombinatorialchemistry.France. Spring Chemistry 350 (3)--Advanced Inorganic Chemistry Prerequisites: Chemistry 250, 252, and 262. Anintro

  10. Gaseous Chemistry and Aerosol Mechanism Developments for Version 3.5.1 of the Online Regional Model, WRF-Chem

    SciTech Connect (OSTI)

    Archer-Nicholls, Scott; Lowe, Douglas; Utembe, Steve; Allan, James D.; Zaveri, Rahul A.; Fast, Jerome D.; Hodnebrog, Oivind; Denier van der Gon, Hugo; McFiggans, Gordon

    2014-11-08T23:59:59.000Z

    We have made a number of developments in the regional coupled model WRF-Chem, with the aim of making the model more suitable for prediction of atmospheric composition and of interactions between air quality and weather. We have worked on the European domain, with a particular focus on making the model suitable for the study of night time chemistry and oxidation by the nitrate radical in the UK atmosphere. A reduced form of the Common Reactive Intermediates gas-phase chemical mechanism (CRIv2-R5) has been implemented to enable more explicit simulation of VOC degradation. N2O5 heterogeneous chemistry has been added to the existing sectional MOSAIC aerosol module, and coupled to both the CRIv2-R5 and existing CBM-Z gas phase scheme. Modifications have also been made to the sea-spray aerosol emission representation, allowing the inclusion of primary organic material in sea-spray aerosol. Driven by appropriate emissions, wind fields and chemical boundary conditions, implementation of the different developments is illustrated in order to demonstrate the impact that these changes have in the North-West European domain. These developments are now part of the freely available WRF-Chem distribution.

  11. Atmospheric Chemistry

    E-Print Network [OSTI]

    Finlayson-Pitts, B. J

    2010-01-01T23:59:59.000Z

    in our understanding of important chemistry and highlightedin our knowledge. In summary, the chemistry occurring in theBJ, Pitts JN, Jr (2000) Chemistry of the Upper and Lower

  12. CLUSTER CHEMISTRY

    E-Print Network [OSTI]

    Muetterties, Earl L.

    2013-01-01T23:59:59.000Z

    Advanced Inorganic Chemistry, 11 Wiley Huetterties and C. M.Submitted to the Journal of Organometallic ChemistryCLUSTER CHEMISTRY Earl L. Muetterties TWO-WEEK LOAN COPY May

  13. EPA/600/R-99/029 Innovative Urban Wet-Weather

    E-Print Network [OSTI]

    Pitt, Robert E.

    EPA/600/R-99/029 Innovative Urban Wet-Weather Flow Management Systems By James P. Heaney Department Laboratory #12;iv Abstract This research project describes innovative methods to develop improved wet weather

  14. Optical wet steam monitor

    DOE Patents [OSTI]

    Maxey, L.C.; Simpson, M.L.

    1995-01-17T23:59:59.000Z

    A wet steam monitor determines steam particle size by using laser doppler velocimeter (LDV) device to produce backscatter light. The backscatter light signal is processed with a spectrum analyzer to produce a visibility waveform in the frequency domain. The visibility waveform includes a primary peak and a plurality of sidebands. The bandwidth of at least the primary frequency peak is correlated to particle size by either visually comparing the bandwidth to those of known particle sizes, or by digitizing the waveform and comparing the waveforms electronically. 4 figures.

  15. Optical wet steam monitor

    DOE Patents [OSTI]

    Maxey, Lonnie C. (Powell, TN); Simpson, Marc L. (Knoxville, TN)

    1995-01-01T23:59:59.000Z

    A wet steam monitor determines steam particle size by using laser doppler velocimeter (LDV) device to produce backscatter light. The backscatter light signal is processed with a spectrum analyzer to produce a visibility waveform in the frequency domain. The visibility waveform includes a primary peak and a plurality of sidebands. The bandwidth of at least the primary frequency peak is correlated to particle size by either visually comparing the bandwidth to those of known particle sizes, or by digitizing the waveform and comparing the waveforms electronically.

  16. Chemistry research and development. Progress report, December 1978-May 1979. [Component, pilot plant, instrumentation

    SciTech Connect (OSTI)

    Miner, F. J.

    1980-06-30T23:59:59.000Z

    Progress and activities are reported on component development, pilot plant development, and instrumentation and statistical systems. Specific items studied include processing of pond sludge, transport of radioactive materials and wastes, corrosion, decontamination and cleaning, fluidized-bed incineration, Pu contamination of soils, chemical analysis, radiometric analysis, security. (DLC)

  17. Modeling the wet bulb globe temperature using standard meteorological measurements.

    SciTech Connect (OSTI)

    Liljegren, J. C.; Carhart, R. A.; Lawday, P.; Tschopp, S.; Sharp, R.; Decision and Information Sciences

    2008-10-01T23:59:59.000Z

    The U.S. Army has a need for continuous, accurate estimates of the wet bulb globe temperature to protect soldiers and civilian workers from heat-related injuries, including those involved in the storage and destruction of aging chemical munitions at depots across the United States. At these depots, workers must don protective clothing that increases their risk of heat-related injury. Because of the difficulty in making continuous, accurate measurements of wet bulb globe temperature outdoors, the authors have developed a model of the wet bulb globe temperature that relies only on standard meteorological data available at each storage depot for input. The model is composed of separate submodels of the natural wet bulb and globe temperatures that are based on fundamental principles of heat and mass transfer, has no site-dependent parameters, and achieves an accuracy of better than 1 C based on comparisons with wet bulb globe temperature measurements at all depots.

  18. Environmental Chemistry II (Atmospheric Chemistry)

    E-Print Network [OSTI]

    Dibble, Theodore

    SYLLABUS FOR Environmental Chemistry II (Atmospheric Chemistry) FCH 511 Fall 2013 Theodore S/explaining the trends in J as a function of altitude and solar zenith angle. The second involves analyzing real

  19. Investigation of Mineral Transformations in Wet Supercritical...

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

    Mineral Transformations in Wet Supercritical CO2 by Electron Microscopy. Investigation of Mineral Transformations in Wet Supercritical CO2 by Electron Microscopy. Abstract: The...

  20. Laboratory Studies of the Reactive Chemistry and Changing CCN Properties of Secondary Organic Aerosol, Including Model Development

    SciTech Connect (OSTI)

    Scot Martin

    2013-01-31T23:59:59.000Z

    The chemical evolution of secondary-organic-aerosol (SOA) particles and how this evolution alters their cloud-nucleating properties were studied. Simplified forms of full Koehler theory were targeted, specifically forms that contain only those aspects essential to describing the laboratory observations, because of the requirement to minimize computational burden for use in integrated climate and chemistry models. The associated data analysis and interpretation have therefore focused on model development in the framework of modified kappa-Koehler theory. Kappa is a single parameter describing effective hygroscopicity, grouping together several separate physicochemical parameters (e.g., molar volume, surface tension, and van't Hoff factor) that otherwise must be tracked and evaluated in an iterative full-Koehler equation in a large-scale model. A major finding of the project was that secondary organic materials produced by the oxidation of a range of biogenic volatile organic compounds for diverse conditions have kappa values bracketed in the range of 0.10 +/- 0.05. In these same experiments, somewhat incongruently there was significant chemical variation in the secondary organic material, especially oxidation state, as was indicated by changes in the particle mass spectra. Taken together, these findings then support the use of kappa as a simplified yet accurate general parameter to represent the CCN activation of secondary organic material in large-scale atmospheric and climate models, thereby greatly reducing the computational burden while simultaneously including the most recent mechanistic findings of laboratory studies.

  1. Combustion chemistry

    SciTech Connect (OSTI)

    Brown, N.J. [Lawrence Berkeley Laboratory, CA (United States)

    1993-12-01T23:59:59.000Z

    This research is concerned with the development and use of sensitivity analysis tools to probe the response of dependent variables to model input variables. Sensitivity analysis is important at all levels of combustion modeling. This group`s research continues to be focused on elucidating the interrelationship between features in the underlying potential energy surface (obtained from ab initio quantum chemistry calculations) and their responses in the quantum dynamics, e.g., reactive transition probabilities, cross sections, and thermal rate coefficients. The goals of this research are: (i) to provide feedback information to quantum chemists in their potential surface refinement efforts, and (ii) to gain a better understanding of how various regions in the potential influence the dynamics. These investigations are carried out with the methodology of quantum functional sensitivity analysis (QFSA).

  2. Hydrothermal Processing of Wet Wastes

    Broader source: Energy.gov [DOE]

    Breakout Session 3A—Conversion Technologies III: Energy from Our Waste—Will we Be Rich in Fuel or Knee Deep in Trash by 2025? Hydrothermal Processing of Wet Wastes James R. Oyler, President, Genifuel Corporation

  3. Organophosphorus chemistry

    E-Print Network [OSTI]

    Hanson, Paul R.

    2014-09-04T23:59:59.000Z

    2087 Organophosphorus chemistry Paul R. Hanson Editorial Open Access Address: Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582, USA Email: Paul R. Hanson - phanson@ku.edu. Keywords: organophosphorus... Beilstein J. Org. Chem. 2014, 10, 2087–2088. doi:10.3762/bjoc.10.217 Received: 28 July 2014 Accepted: 06 August 2014 Published: 04 September 2014 This article is part of the Thematic Series "Organophosphorus chemistry" Guest Editor: P. R. Hanson © 2014...

  4. Chemistry and materials science progress report. Weapons-supporting research and laboratory directed research and development: FY 1995

    SciTech Connect (OSTI)

    NONE

    1996-04-01T23:59:59.000Z

    This report covers different materials and chemistry research projects carried out a Lawrence Livermore National Laboratory during 1995 in support of nuclear weapons programs and other programs. There are 16 papers supporting weapons research and 12 papers supporting laboratory directed research.

  5. US PRACTICE FOR INTERIM WET STORAGE OF RRSNF

    SciTech Connect (OSTI)

    Vinson, D.

    2010-08-05T23:59:59.000Z

    Aluminum research reactor spent nuclear fuel is currently being stored or is anticipated to be returned to the United States and stored at Department of Energy storage facilities at the Savannah River Site and the Idaho Nuclear Technology and Engineering Center. This paper summarizes the current practices to provide for continued safe interim wet storage in the U.S. Aluminum fuel stored in poor quality water is subject to aggressive corrosion attack and therefore water chemistry control systems are essential to maintain water quality. Fuel with minor breaches are safely stored directly in the basin. Fuel pieces and heavily damaged fuel is safely stored in isolation canisters.

  6. Assessment and development of an industrial wet oxidation system for burning waste and low upgrade fuels. Final report, Phase 2B: Pilot demonstration of the MODAR supercritical water oxidation process

    SciTech Connect (OSTI)

    Not Available

    1994-01-01T23:59:59.000Z

    Stone & Webster Engineering Corporation is Project Manager for the Development and Demonstration of an Industrial Wet Oxidation System for Burning Wastes and Low Grade Fuel. This program has been ongoing through a Cooperative Agreement sponsored by the Department of Energy, initiated in June 1988. This report presents a comprehensive discussion of the results of the demonstration project conducted under this cooperative agreement with the overall goal of advancing the state-of-the-art in the practice of Supercritical Water Oxidation (SCWO). In recognition of the Government`s support of this project, we have endeavored to include all material and results that are not proprietary in as much detail as possible while still protecting MODAR`s proprietary technology. A specific example is in the discussion of materials of construction where results are presented while, in some cases, the specific materials are not identified. The report presents the results chronologically. Background material on the earlier phases (Section 2) provide an understanding of the evolution of the program, and bring all reviewers to a common starting point. Section 3 provides a discussion of activities from October 1991 through July 1992, during which the pilot plant was designed; and various studies including computational fluid dynamic modeling of the reactor vessel, and a process HAZOP analyses were conducted. Significant events during fabrication are presented in Section 4. The experimental results of the test program (December 1992--August 1993) are discussed in Section 5.

  7. he Impact of Primary Marine Aerosol on Atmospheric Chemistry, Radiation and Climate: A CCSM Model Development Study

    SciTech Connect (OSTI)

    Keene, William C. [University of Virginia] [University of Virginia; Long, Michael S. [University of Virginia] [University of Virginia

    2013-05-20T23:59:59.000Z

    This project examined the potential large-scale influence of marine aerosol cycling on atmospheric chemistry, physics and radiative transfer. Measurements indicate that the size-dependent generation of marine aerosols by wind waves at the ocean surface and the subsequent production and cycling of halogen-radicals are important but poorly constrained processes that influence climate regionally and globally. A reliable capacity to examine the role of marine aerosol in the global-scale atmospheric system requires that the important size-resolved chemical processes be treated explicitly. But the treatment of multiphase chemistry across the breadth of chemical scenarios encountered throughout the atmosphere is sensitive to the initial conditions and the precision of the solution method. This study examined this sensitivity, constrained it using high-resolution laboratory and field measurements, and deployed it in a coupled chemical-microphysical 3-D atmosphere model. First, laboratory measurements of fresh, unreacted marine aerosol were used to formulate a sea-state based marine aerosol source parameterization that captured the initial organic, inorganic, and physical conditions of the aerosol population. Second, a multiphase chemical mechanism, solved using the Max Planck Institute for Chemistryâ??s MECCA (Module Efficiently Calculating the Chemistry of the Atmosphere) system, was benchmarked across a broad set of observed chemical and physical conditions in the marine atmosphere. Using these results, the mechanism was systematically reduced to maximize computational speed. Finally, the mechanism was coupled to the 3-mode modal aerosol version of the NCAR Community Atmosphere Model (CAM v3.6.33). Decadal-scale simulations with CAM v.3.6.33, were run both with and without reactive-halogen chemistry and with and without explicit treatment of particulate organic carbon in the marine aerosol source function. Simulated results were interpreted (1) to evaluate influences of marine aerosol production on the microphysical properties of aerosol populations and clouds over the ocean and the corresponding direct and indirect effects on radiative transfer; (2) atmospheric burdens of reactive halogen species and their impacts on O3, NOx, OH, DMS, and particulate non-sea-salt SO42-; and (3) the global production and influences of marine-derived particulate organic carbon. The model reproduced major characteristics of the marine aerosol system and demonstrated the potential sensitivity of global, decadal-scale climate metrics to multiphase marine-derived components of Earthâ??s troposphere. Due to the combined computational burden of the coupled system, the currently available computational resources were the limiting factor preventing the adequate statistical analysis of the overall impact that multiphase chemistry might have on climate-scale radiative transfer and climate.

  8. Chemistry-nuclear chemistry division. Progress report, October 1979-September 1980

    SciTech Connect (OSTI)

    Ryan, R.R. (comp.)

    1981-05-01T23:59:59.000Z

    This report presents the research and development programs pursued by the Chemistry-Nuclear Chemistry Division of the Los Alamos National Laboratory. Topics covered include advanced analytical methods, atmospheric chemistry and transport, biochemistry, biomedical research, element migration and fixation, inorganic chemistry, isotope separation and analysis, atomic and molecular collisions, molecular spectroscopy, muonic x rays, nuclear cosmochemistry, nuclear structure and reactions, radiochemical separations, theoretical chemistry, and unclassified weapons research.

  9. Wetting and lubricating film instabilities in microchannels

    E-Print Network [OSTI]

    Cubaud, Thomas

    , and silicone oils . Dynamic wetting transitions: a pearl flow thick lubricating film , b spider flow thinWetting and lubricating film instabilities in microchannels Thomas Cubaud Department of Mechanical of partially wetting threads in planar microchannels of height h=100 or 250 m fluids: ethanol, mineral oils

  10. Position: Assistant Professor of Chemistry, Physical Chemistry

    E-Print Network [OSTI]

    John Grey Position: Assistant Professor of Chemistry, Physical Chemistry Email: jkgrey@unm.edu Phone: 505.277.1658; Fax: 505.277.2609 Office: Clark Hall B70 Homepage: http://chemistry.unm.edu/faculty_web/jgrey Education B.S. in Chemistry, 1999, Michigan Technological University, Houghton, MI Ph.D. in Chemistry

  11. Green Chemistry and Workers

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    J. Warner. 1998. Green Chemistry: Theory and Practice. NewNew Science, Green Chemistry and Environmental Health.abstract.html 5. American Chemistry Council. 2003. Guide to

  12. UCLA CHEMISTRY & BIOCHEMISTRY

    E-Print Network [OSTI]

    Levine, Alex J.

    UCLA CHEMISTRY & BIOCHEMISTRY ORIENTATION HANDBOOK 2012-2013 #12;Table of Contents Introduction .............................................................................................................................................2 Chemistry & Biochemistry Undergraduate Office ..................................................................................................3 Majors in Chemistry

  13. Analytical Chemistry Laboratory Progress Report for FY 1994

    SciTech Connect (OSTI)

    Green, D.W.; Boparai, A.S.; Bowers, D.L. [and others

    1994-12-01T23:59:59.000Z

    The purpose of this report is to summarize the activities of the Analytical Chemistry Laboratory (ACL) at Argonne National Laboratory (ANL) for Fiscal Year (FY) 1994 (October 1993 through September 1994). This annual report is the eleventh for the ACL and describes continuing effort on projects, work on new projects, and contributions of the ACL staff to various programs at ANL. The Analytical Chemistry Laboratory is a full-cost-recovery service center, with the primary mission of providing a broad range of analytical chemistry support services to the scientific and engineering programs at ANL. The ACL also has a research program in analytical chemistry, conducts instrumental and methods development, and provides analytical services for governmental, educational, and industrial organizations. The ACL handles a wide range of analytical problems. Some routine or standard analyses are done, but it is common for the Argonne programs to generate unique problems that require significant development of methods and adaption of techniques to obtain useful analytical data. The ACL has four technical groups -- Chemical Analysis, Instrumental Analysis, Organic Analysis, and Environmental Analysis -- which together include about 45 technical staff members. Talents and interests of staff members cross the group lines, as do many projects within the ACL. The Chemical Analysis Group uses wet- chemical and instrumental methods for elemental, compositional, and isotopic determinations in solid, liquid, and gaseous samples and provides specialized analytical services. Major instruments in this group include an ion chromatograph (IC), an inductively coupled plasma/atomic emission spectrometer (ICP/AES), spectrophotometers, mass spectrometers (including gas-analysis and thermal-ionization mass spectrometers), emission spectrographs, autotitrators, sulfur and carbon determinators, and a kinetic phosphorescence uranium analyzer.

  14. The microrheology of wet forms

    SciTech Connect (OSTI)

    Kraynik, A.M. [Sandia National Labs., Albuquerque, NM (United States); Reinelt, D.A. [Southern Methodist Univ., Dallas, TX (United States). Dept. of Mathematics

    1996-05-01T23:59:59.000Z

    The Kelvin cell is the only known topology for stable, perfectly ordered, dry foams. During topological transitions (T1s) associated with large elastic-plastic deformations, these cells switch neighbors and some faces gain or lose two sides, but the resulting bubbles with different shape are still Kelvin cells. The bubbles in a stable, perfectly ordered. wet foam are not limited to one topology (or even the two described here). The topological transitions considered here result in gain or loss of two dry films per bubble. The transition from Kelvin to RD topology is triggered by films shrinking in area, as in the dry case. However, the reverse transition from RD to Kelvin topology involves a different mechanism--opposite interfaces of an eight-way vertex touch and a new film grows from the point of contact as the foam is compressed. Microrheological analysis based on 2D models of foam structure has been useful preparation for 3D, despite obvious differences between 2D and 3D. Linear elastic behavior is anisotropic for perfectly ordered 3D foams--nonlinear elastic behavior is isotropic for 2D foams with polydisperse hexagonal structure. The shear moduli of a wet Kelvin foam decrease with increasing {phi}--the shear modulus of a wet 2D foam (with three-way Plateau borders) does not depend on {phi} at all. The effective isotropic shear moduli G of perfectly ordered wet foams tend to decrease with increasing {phi} but do not exhibit linear dependence, which may stem from the disorder of real systems.

  15. Actinide Chemistry

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProducts (VAP) VAP7-0973 1 IntroductionActinide Chemistry Actinide chemistry

  16. Dry purification of aspirational air in coke-sorting systems with wet slaking of coke

    SciTech Connect (OSTI)

    T.F. Trembach; A.G. Klimenko [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

    2009-07-15T23:59:59.000Z

    Coke transportation after wet slaking is accompanied by the release of dust in the production building and in the surrounding atmosphere. Wet methods are traditionally used to purify very humid air. Giprokoks has developed designs for highly efficient dry dust-removal methods in such conditions.

  17. Stochastic modeling of hourly dry-bulb and wet-bulb temperatures

    SciTech Connect (OSTI)

    Kline, D.E.; Woeste, F.E.

    1984-01-01T23:59:59.000Z

    A stochastic model of hourly dry-bulb and wet-bulb temperatures was developed. The periodic variations over the course of a year were estimated by least-square approximation. A multisite Markov model was used to simulate the stochastic nature of the data. These two models were combined to simulate years of hourly dry-bulb and wet-bulb temperatures.

  18. Coal combustion by wet oxidation

    SciTech Connect (OSTI)

    Bettinger, J.A.; Lamparter, R.A.; McDowell, D.C.

    1980-11-15T23:59:59.000Z

    The combustion of coal by wet oxidation was studied by the Center for Waste Management Programs, of Michigan Technological University. In wet oxidation a combustible material, such as coal, is reacted with oxygen in the presence of liquid water. The reaction is typically carried out in the range of 204/sup 0/C (400/sup 0/F) to 353/sup 0/C (650/sup 0/F) with sufficient pressure to maintain the water present in the liquid state, and provide the partial pressure of oxygen in the gas phase necessary to carry out the reaction. Experimental studies to explore the key reaction parameters of temperature, time, oxidant, catalyst, coal type, and mesh size were conducted by running batch tests in a one-gallon stirred autoclave. The factors exhibiting the greatest effect on the extent of reaction were temperature and residence time. The effect of temperature was studied from 204/sup 0/C (400/sup 0/F) to 260/sup 0/C (500/sup 0/F) with a residence time from 600 to 3600 seconds. From this data, the reaction activation energy of 2.7 x 10/sup 4/ calories per mole was determined for a high-volatile-A-Bituminous type coal. The reaction rate constant may be determined at any temperature from the activation energy using the Arrhenius equation. Additional data were generated on the effect of mesh size and different coal types. A sample of peat was also tested. Two catalysts were evaluated, and their effects on reaction rate presented in the report. In addition to the high temperature combustion, low temperature desulfurization is discussed. Desulfurization can improve low grade coal to be used in conventional combustion methods. It was found that 90% of the sulfur can be removed from the coal by wet oxidation with the carbon untouched. Further desulfurization studies are indicated.

  19. Chemistry 106X -Fall 2010 General Chemistry

    E-Print Network [OSTI]

    Wagner, Diane

    Chemistry 106X - Fall 2010 General Chemistry Instructor: Christopher Iceman Class: MWF 9 bookstore or elsewhere: · Chemistry and Chemical Reactivity 7th Ed. by Kotz, Treichel, and Townsend-0-495-38703-9 Electronic Book - ISBN 978-0-495-68043-7 · OWL pin number for Chemistry and Chemical Reactivity 7th Ed. (1

  20. Chemistry 411/611 Inorganic Chemistry (2011)

    E-Print Network [OSTI]

    Mather, Patrick T.

    2011-01-01T23:59:59.000Z

    1 Chemistry 411/611 Inorganic Chemistry (2011) Instructor: Assistant Professor Mathew M. Maye Chemistry", 5th Edition, Freeman Press. Available at SU bookstore. The solution manual is optional. (Suggested for CHE611 Students pursuing Inorganic) Huheey, "Inorganic Chemistry: Principles of Structure

  1. Chemistry 106X -Spring 2011 General Chemistry

    E-Print Network [OSTI]

    Wagner, Diane

    Chemistry 106X - Spring 2011 General Chemistry Instructor: Christopher Iceman Class: MWF 1 and can be purchased in the UAF bookstore or elsewhere: · Chemistry and Chemical Reactivity 7th Ed for Chemistry and Chemical Reactivity 7th Ed. (1 or 2 semester) · TurningPoint Technologies ResponseCard RF

  2. Carbon nanotube fiber spun from wetted ribbon

    DOE Patents [OSTI]

    Zhu, Yuntian T; Arendt, Paul; Zhang, Xiefei; Li, Qingwen; Fu, Lei; Zheng, Lianxi

    2014-04-29T23:59:59.000Z

    A fiber of carbon nanotubes was prepared by a wet-spinning method involving drawing carbon nanotubes away from a substantially aligned, supported array of carbon nanotubes to form a ribbon, wetting the ribbon with a liquid, and spinning a fiber from the wetted ribbon. The liquid can be a polymer solution and after forming the fiber, the polymer can be cured. The resulting fiber has a higher tensile strength and higher conductivity compared to dry-spun fibers and to wet-spun fibers prepared by other methods.

  3. School of Chemistry CHEM3100: Chemistry at a Molecular Level

    E-Print Network [OSTI]

    Rzepa, Henry S.

    School of Chemistry CHEM3100: Chemistry at a Molecular Level Tutorial Groups 2013/14 Name Programme Tutor Ahmed, Zacher Medicinal Chemistry Arif, Saboor Chemistry Bagnall, Samuel Chemistry Barbara, David Chemistry Beaumont, Nicholas Chemistry Quinn, Michael J Chemistry Bennett, Matthew Chemistry Booth, Natalie

  4. Estimating Wet Bulb Globe Temperature Using Standard Meteorological Measurements

    SciTech Connect (OSTI)

    Hunter, C.H.

    1999-11-18T23:59:59.000Z

    The heat stress management program at the Department of Energy''s Savannah River Site (SRS) requires implementation of protective controls on outdoor work based on observed values of wet bulb globe temperature (WBGT). To ensure continued compliance with heat stress program requirements, a computer algorithm was developed which calculates an estimate of WBGT using standard meteorological measurements. In addition, scripts were developed to generate a calculation every 15 minutes and post the results to an Intranet web site.

  5. CHEMISTRY CURRICULUM SEMESTER I

    E-Print Network [OSTI]

    Srinivasan, N.

    CHEMISTRY CURRICULUM SEMESTER ­ I Chemistry-I: Physical principles (2:1) Atomic structure-state approximation, Arrhenius equation and collision theory and catalysis. SEMESTER ­ II Chemistry-II: Structure orbital theory: polyatomic molecules - Walsh diagram; Main group chemistry: periodic properties, chemistry

  6. Numerical study of perfect wetting in quenched QCD

    SciTech Connect (OSTI)

    Brower, R. (Physics Department, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215 (United States)); Huang, S. (Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States)); Potvin, J. (Physics Department, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215 (United States) Department of Science and Mathematics, Parks College of Saint Louis University, Cahokia, Illinois 62206 (United States)); Rebbi, C.; Ross, J. (Physics Department, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215 (United States))

    1992-11-15T23:59:59.000Z

    In the quenched approximation of QCD, the high-temperature phase (or gluon plasma phase) will be found in one of three degenerate vacua characterized by the average value of the Polyakov loop. Such vacua can coexist separated by a sharp interface. As {ital T}{r arrow}{ital T}{sub {ital c}}{sup +} (the confinement temperature) confined or glueball matter may be able to grow as a layer along this interface. QCD is said to obey {ital perfect} {ital wetting} if these layers are planar, or {ital imperfect} {ital wetting} if they are shaped like lenses. Evidence for perfect wetting in quenched QCD is studied from a calculation of the surface tension {alpha}{sub {ital p},}{ital p}/{ital T}{sup 3} between two high-temperature plasma phases at {ital T}{sub {ital c}} on a 16{sup 2}{times}32{times}4 lattice. By comparison with the value of the surface tension of a hadron-plasma interface, the data suggest that planar slabs or at least very long lenses develop along the interface, implying that QCD obeys perfect wetting.

  7. Assessment of an Industrial Wet Oxidation System for Burning Waste and Low-Grade Fuels 

    E-Print Network [OSTI]

    Bettinger, J.; Koppel, P.; Margulies, A.

    1988-01-01T23:59:59.000Z

    "Stone & Webster Engineering Corporation, under Department of Energy sponsorship, is developing a wet oxidation system to generate steam for industrial processes by burning industrial waste materials and low-grade fuels. The program involves...

  8. Predictive modeling of reactive wetting and metal joining.

    SciTech Connect (OSTI)

    van Swol, Frank B.

    2013-09-01T23:59:59.000Z

    The performance, reproducibility and reliability of metal joints are complex functions of the detailed history of physical processes involved in their creation. Prediction and control of these processes constitutes an intrinsically challenging multi-physics problem involving heating and melting a metal alloy and reactive wetting. Understanding this process requires coupling strong molecularscale chemistry at the interface with microscopic (diffusion) and macroscopic mass transport (flow) inside the liquid followed by subsequent cooling and solidification of the new metal mixture. The final joint displays compositional heterogeneity and its resulting microstructure largely determines the success or failure of the entire component. At present there exists no computational tool at Sandia that can predict the formation and success of a braze joint, as current capabilities lack the ability to capture surface/interface reactions and their effect on interface properties. This situation precludes us from implementing a proactive strategy to deal with joining problems. Here, we describe what is needed to arrive at a predictive modeling and simulation capability for multicomponent metals with complicated phase diagrams for melting and solidification, incorporating dissolutive and composition-dependent wetting.

  9. Green Chemistry and Workers

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    19. P. Anastas, J. Warner. 1998. Green Chemistry: Theory andto Advance New Science, Green Chemistry and EnvironmentalChronicle Extra: Guide to Green Jobs. Field with a Future.

  10. The Governance of Clean Development Working Paper 007 July 2010

    E-Print Network [OSTI]

    Matthews, Adrian

    Development Mechanism CERC Central Electricty Regulartory Commission C-WET Centre for Wind Energy Technology

  11. Department of Chemistry "Supramolecular Chemistry in Polymeric

    E-Print Network [OSTI]

    Mark, James E.

    Department of Chemistry "Supramolecular Chemistry in Polymeric Systems: From Nanoassemblies to Dynamic Materials" Presented by: Professor Stuart J. Rowan Case Western Reserve University Departmental Colloquium Friday, May 15, 2009 3:00 p.m. 502 Rieveschl #12;Supramolecular Chemistry in Polymeric Systems

  12. Chemistry 411/611 Inorganic Chemistry (2010)

    E-Print Network [OSTI]

    Mather, Patrick T.

    2010-01-01T23:59:59.000Z

    -ligand reactivity, and the chemical synthesis of coordination compounds and other "solid" state materials 1 Chemistry 411/611 Inorganic Chemistry (2010) Instructor: Assistant Professor Mathew M. Maye: M-W 4:00-5:00, and by appointment Credits: 3 Text: (Required) Shriver & Atkins, "Inorganic Chemistry

  13. FACULTY POSITION IN INORGANIC CHEMISTRY Department of Chemistry

    E-Print Network [OSTI]

    Doyle, Robert

    FACULTY POSITION IN INORGANIC CHEMISTRY Department of Chemistry Syracuse University The Department of Chemistry at Syracuse University invites applications for a tenure track faculty position at the Assistant Professor level in inorganic chemistry with specialization in materials chemistry (broadly defined

  14. Order of wetting transitions in electrolyte solutions

    SciTech Connect (OSTI)

    Ibagon, Ingrid, E-mail: ingrid@is.mpg.de; Bier, Markus, E-mail: bier@is.mpg.de; Dietrich, S. [Max-Planck-Institut für Intelligente Systeme, Heisenbergstr. 3, 70569 Stuttgart, Germany and IV. Institut für Theoretische Physik, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart (Germany)] [Max-Planck-Institut für Intelligente Systeme, Heisenbergstr. 3, 70569 Stuttgart, Germany and IV. Institut für Theoretische Physik, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart (Germany)

    2014-05-07T23:59:59.000Z

    For wetting films in dilute electrolyte solutions close to charged walls we present analytic expressions for their effective interface potentials. The analysis of these expressions renders the conditions under which corresponding wetting transitions can be first- or second-order. Within mean field theory we consider two models, one with short- and one with long-ranged solvent-solvent and solvent-wall interactions. The analytic results reveal in a transparent way that wetting transitions in electrolyte solutions, which occur far away from their critical point (i.e., the bulk correlation length is less than half of the Debye length) are always first-order if the solvent-solvent and solvent-wall interactions are short-ranged. In contrast, wetting transitions close to the bulk critical point of the solvent (i.e., the bulk correlation length is larger than the Debye length) exhibit the same wetting behavior as the pure, i.e., salt-free, solvent. If the salt-free solvent is governed by long-ranged solvent-solvent as well as long-ranged solvent-wall interactions and exhibits critical wetting, adding salt can cause the occurrence of an ion-induced first-order thin-thick transition which precedes the subsequent continuous wetting as for the salt-free solvent.

  15. Identification of High Collision Concentration Locations Under Wet Weather Conditions

    E-Print Network [OSTI]

    Hwang, Taesung; Chung, Koohong; Ragland, David; Chan, Chin-Yao

    2008-01-01T23:59:59.000Z

    conducted under wet weather conditions. Observations fromLeahy, M. , and Suggett, J. Weather as a Chronic Hazard forLocations Under Wet Weather Conditions Taesung Hwang,

  16. Epoxy Nanocomposites - Curing Rheokinetics, Wetting and Adhesion to Fibers

    SciTech Connect (OSTI)

    Ilyin, S. O.; Kotomin, S. V.; Kulichikhin, V. G. [A.V.Topchiev Institute of Petrochemical Synthesis, 29, Leninskii Prospect, Moscow, 119991 (Russian Federation)

    2010-06-02T23:59:59.000Z

    Epoxy nanocomposites considered as challenging polymeric matrix for advanced reinforced plastics. Nanofillers change rheokinetics of epoxy resin curing, affect wetting and adhesion to aramid and carbon fibers. In all cases extreme dependence of adhesive strength vs filler content in the binder was observed. New experimental techniques were developed to study wettability and fiber-matrix adhesion interaction, using yarn penetration path length, aramid fiber knot pull-up test and electrical admittance of the fracture surface of CFRP.

  17. Chemistry-Nuclear Chemistry Division. Progress report, October 1980-September 1981

    SciTech Connect (OSTI)

    Ryan, R.R. (comp.)

    1982-05-01T23:59:59.000Z

    This report describes major progress in the research and development programs pursued by the Chemistry-Nuclear Chemistry Division of the Los Alamos National Laboratory during FY 1981. Topics covered include advanced analytical methods, atmospheric chemistry and transport, biochemistry, biomedical research, medical radioisotopes research, element migration and fixation, nuclear waste isolation research, inorganic and structural chemistry, isotope separation, analysis and applications, the newly established Nuclear Magnetic Resonance Center, atomic and molecular collisions, molecular spectroscopy, nuclear cosmochemistry, nuclear structure and reactions, pion charge exchange, radiochemical separations, theoretical chemistry, and unclassified weapons research.

  18. Maintenance of Stormwater Wetlands and Wet Ponds

    E-Print Network [OSTI]

    Hunt, William F.

    constructed across North Carolina. OVERVIEW As its name implies, a stormwater wetland is a wetland system of stormwater wetlands and wet ponds is performed to achieve four goals: efficient hydraulic flow and pollutant

  19. Wet/dry cooling tower and method

    DOE Patents [OSTI]

    Glicksman, Leon R. (Lynnfield, MA); Rohsenow, Warren R. (Waban, MA)

    1981-01-01T23:59:59.000Z

    A wet/dry cooling tower wherein a liquid to-be-cooled is flowed along channels of a corrugated open surface or the like, which surface is swept by cooling air. The amount of the surface covered by the liquid is kept small compared to the dry part thereof so that said dry part acts as a fin for the wet part for heat dissipation.

  20. Graduate Profile Chemistry & PhysiCs

    E-Print Network [OSTI]

    Graduate Profile Chemistry & PhysiCs "...I am helping to develop low-cost solar technology." Ricky to develop low-cost solar technology. The aim of my project is to achieve increased light absorption in thin

  1. Molten fluoride fuel salt chemistry

    SciTech Connect (OSTI)

    Toth, L.M.; Del Cul, G.D.; Dai, S.; Metcalf, D.H. [Oak Ridge National Lab., TN (United States). Chemical Technology Div.

    1994-09-01T23:59:59.000Z

    The chemistry of molten fluorides is traced from their development as fuels in the Molten Salt Reactor Experiment with important factors in their selection being discussed. Key chemical characteristics such as solubility, redox behavior, and chemical activity are explained as they relate to the behavior of molten fluoride fuel systems. Fission product behavior is described along with processing experience. Development requirements for fitting the current state of the chemistry to modern nuclear fuel system are described. It is concluded that while much is known about molten fluoride behavior, processing and recycle of the fuel components is a necessary factor if future systems are to be established.

  2. Why chemistry? Chemistry is fundamental: it is the enabling

    E-Print Network [OSTI]

    Sussex, University of

    Chemistry Why chemistry? Chemistry is fundamental: it is the enabling science that underlies many technology. A chemistry degree gives you the understanding to contribute to our future in very topical areas) in Chemistry BSc (Hons) in Chemistry MChem (Hons) in Chemistry (with an industrial placement year) MChem (Hons

  3. WETTABILITY AND IMBIBITION: MICROSCOPIC DISTRIBUTION OF WETTING AND ITS CONSEQUENCES AT THE CORE AND FIELD SCALES

    SciTech Connect (OSTI)

    Jill S. Buckley; Norman R. Morrow; Chris Palmer; Purnendu K. Dasgupta

    2003-02-01T23:59:59.000Z

    The questions of reservoir wettability have been approached in this project from three directions. First, we have studied the properties of crude oils that contribute to wetting alteration in a reservoir. A database of more than 150 different crude oil samples has been established to facilitate examination of the relationships between crude oil chemical and physical properties and their influence on reservoir wetting. In the course of this work an improved SARA analysis technique was developed and major advances were made in understanding asphaltene stability including development of a thermodynamic Asphaltene Solubility Model (ASM) and empirical methods for predicting the onset of instability. The CO-Wet database is a resource that will be used to guide wettability research in the future. The second approach is to study crude oil/brine/rock interactions on smooth surfaces. Contact angle measurements were made under controlled conditions on mica surfaces that had been exposed to many of the oils in the CO-Wet database. With this wealth of data, statistical tests can now be used to examine the relationships between crude oil properties and the tendencies of those oils to alter wetting. Traditionally, contact angles have been used as the primary wetting assessment tool on smooth surfaces. A new technique has been developed using an atomic forces microscope that adds a new dimension to the ability to characterize oil-treated surfaces. Ultimately we aim to understand wetting in porous media, the focus of the third approach taken in this project. Using oils from the CO-Wet database, experimental advances have been made in scaling the rate of imbibition, a sensitive measure of core wetting. Application of the scaling group to mixed-wet systems has been demonstrated for a range of core conditions. Investigations of imbibition in gas/liquid systems provided the motivation for theoretical advances as well. As a result of this project we have many new tools for studying wetting at microscopic and macroscopic scales and a library of well-characterized fluids for use in studies of crude oil/brine/rock interactions.

  4. Carbon Chemistry in interstellar clouds

    E-Print Network [OSTI]

    Maryvonne Gerin; David Fosse; Evelyne Roueff

    2002-12-03T23:59:59.000Z

    We discuss new developments of interstellar chemistry, with particular emphasis on the carbon chemistry. We confirm that carbon chains and cycles are ubiquitous in the ISM and closely chemically related to ea ch other, and to carbon. Investigation of the carbon budget in shielded and UV illuminated gas shows that the inventory of interstellar molecules is not complete and more complex molecules with 4 or more carbon atoms must be present. Finally we discuss the consequences for the evolution of clouds and conclude that the ubiquitous presence of carbon chains and cycles is not a necessary consequence of a very young age for interstellar clouds.

  5. Wet powder seal for gas containment

    DOE Patents [OSTI]

    Stang, Louis G. (Sayville, NY)

    1982-01-01T23:59:59.000Z

    A gas seal is formed by a compact layer of an insoluble powder and liquid filling the fine interstices of that layer. The smaller the particle size of the selected powder, such as sand or talc, the finer will be the interstices or capillary spaces in the layer and the greater will be the resulting sealing capacity, i.e., the gas pressure differential which the wet powder layer can withstand. Such wet powder seal is useful in constructing underground gas reservoirs or storage cavities for nuclear wastes as well as stopping leaks in gas mains buried under ground or situated under water. The sealing capacity of the wet powder seal can be augmented by the hydrostatic head of a liquid body established over the seal.

  6. Computational Chemistry Robots

    E-Print Network [OSTI]

    Townsend, Joseph A; Murray-Rust, Peter; Tyrrell, Simon M; Zhang, Yong

    Computational Chemistry Robots ACS Sep 2005 Computational Chemistry Robots J. A. Townsend, P. Murray-Rust, S. M. Tyrrell, Y. Zhang jat45@cam.ac.uk Can high-throughput computation provide a reliable “experimental” resource for molecular...

  7. Why chemistry? Chemistry is fundamental: it is the enabling science

    E-Print Network [OSTI]

    Sussex, University of

    Chemistry Why chemistry? Chemistry is fundamental: it is the enabling science that underlies many technology. A chemistry degree allows you to understand and to contribute to our future. Chemistry is challenging: understanding the very fabric of matter is both stimulating and rewarding. Studying chemistry

  8. Chemistry Division Department of Biological

    E-Print Network [OSTI]

    Heller, Barbara

    1 Chemistry Division Department of Biological and Chemical Sciences, Illinois Institute-13 Chemistry Division invites nominations for Kilpatrick Fellowship for the academic year 2012's Chemistry Department from 1947­1960. Mary Kilpatrick was a chemistry faculty member from 1947

  9. Chaoticity of the Wet Granular Gas

    E-Print Network [OSTI]

    A. Fingerle; S. Herminghaus; V. Yu. Zaburdaev

    2007-05-22T23:59:59.000Z

    In this work we derive an analytic expression for the Kolmogorov-Sinai entropy of dilute wet granular matter, valid for any spatial dimension. The grains are modelled as hard spheres and the influence of the wetting liquid is described according to the Capillary Model, in which dissipation is due to the hysteretic cohesion force of capillary bridges. The Kolmogorov-Sinai entropy is expanded in a series with respect to density. We find a rapid increase of the leading term when liquid is added. This demonstrates the sensitivity of the granular dynamics to humidity, and shows that the liquid significantly increases the chaoticity of the granular gas.

  10. Controllable underwater anisotropic oil-wetting

    SciTech Connect (OSTI)

    Yong, Jiale; Chen, Feng, E-mail: chenfeng@mail.xjtu.edu.cn; Yang, Qing; Farooq, Umar; Bian, Hao; Du, Guangqing; Hou, Xun [State Key Laboratory for Manufacturing System Engineering and Key Laboratory of Photonics Technology for Information of Shaanxi Province, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049 (China)

    2014-08-18T23:59:59.000Z

    This Letter demonstrates a simple method to achieve underwater anisotropic oil-wetting using silicon surfaces with a microgroove array produced by femtosecond laser ablation. The oil contact angles along the direction perpendicular to the grooves are consistently larger than those parallel to the microgroove arrays in water because the oil droplet is restricted by the energy barrier that exists between the non-irradiated domain and the trapped water in the laser-ablated microgrooves. This underwater anisotropic oil-wetting is able to be controlled, and the anisotropy can be tuned from 0° to ?20° by adjusting the period of the microgroove arrays.

  11. Chemistry and Biochemistry Scholarships

    E-Print Network [OSTI]

    Almor, Amit

    Chemistry and Biochemistry Scholarships Complete Scholarship Name Application Deadline Date Contact Endowment Fund To provide support for undergraduate biomedical research in the Department of Chemistry/or the purchase of supplies. Yes w/recommendation s from faculty Call goes out in February to all chemistry

  12. CHEMISTRY DEPARTMENT HANDBOOKFOR STUDENTS

    E-Print Network [OSTI]

    Hardy, Christopher R.

    CHEMISTRY DEPARTMENT HANDBOOKFOR STUDENTS Millersville University Millersville, Pennsylvania in the ChemistryDepartment. It brings together material not collected in other places and is not meant Resources 2 Programs in Chemistry and The General Education Curriculum Record Form 3 The Major Requirements

  13. Chemistry and Biochemistry Scholarships

    E-Print Network [OSTI]

    Almor, Amit

    Chemistry and Biochemistry Scholarships Complete Scholarship Name Application Deadline Date Contact to Chemistry and Biochemistry entering graduate students who have asked for consideration to serve as research@chem.sc.edu Hiram and Lawanda Allen Scholarship for Excellence in Chemistry This award is given to a graduating

  14. Ensuring message embedding in wet paper steganography

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Ensuring message embedding in wet paper steganography Daniel Augot1, Morgan Barbier1, and Caroline as a method to stealthily embed a message in a cover-medium through the use of bounded decoding. In 2005-medium and the message. Unfortunately, almost all existing methods solving the bounded decoding syndrome problem

  15. Organic Chemistry 51B -Winter 2013 Organic Chemistry Peer Tutoring Program Chemistry 51B Reactions List

    E-Print Network [OSTI]

    Rose, Michael R.

    Organic Chemistry 51B - Winter 2013 Organic Chemistry Peer Tutoring Program Chemistry 51B Reactions(s). Chapter 7: Nucleophilic Substitution + + NaOH CH3O- #12;Organic Chemistry 51B - Winter 2013 Organic Chemistry Peer Tutoring Program Chapter 8: Elimination Reactions #12;Organic Chemistry 51B - Winter 2013

  16. Use of roof temperature modeling to predict necessary conditions for locating wet insulation with infrared thermography

    SciTech Connect (OSTI)

    Childs, K.W.

    1985-11-01T23:59:59.000Z

    In low-sloped roofing systems using porous insulation, the presence of water can significantly degrade thermal performance. For this reason, it is desirable to develop a reliable method for detecting the presence of water in a roofing system. Because of the different thermal characteristics of wet and dry insulation, there is often a surface temperature differential between areas containing wet insulation and areas containing dry insulation. Under the right circumstances, the areas of wet insulation can be detected by means of infrared sensing techniques. These techniques have already gained widespread acceptance, but there is still some uncertainty as to what are appropriate environmental conditions for viewing. To better define the conditions under which infrared techniques can distinguish between areas of wet and dry insulation, a one-dimensional, transient heat transfer model of a roofing system was developed. The model considers conduction through the roof, insolation on the surface, radiant exchange between the roof and sky, convective heat transfer between the roof and air, and the influence of trapped moisture on the thermal properties of the insulation. A study was undertaken using this model to develop an easily-applied technique for prediction of necessary conditions for locating wet roof insulation using infrared thermography.

  17. Advanced Chemistry Basins Model

    SciTech Connect (OSTI)

    Blanco, Mario; Cathles, Lawrence; Manhardt, Paul; Meulbroek, Peter; Tang, Yongchun

    2003-02-13T23:59:59.000Z

    The objective of this project is to: (1) Develop a database of additional and better maturity indicators for paleo-heat flow calibration; (2) Develop maturation models capable of predicting the chemical composition of hydrocarbons produced by a specific kerogen as a function of maturity, heating rate, etc.; assemble a compositional kinetic database of representative kerogens; (3) Develop a 4 phase equation of state-flash model that can define the physical properties (viscosity, density, etc.) of the products of kerogen maturation, and phase transitions that occur along secondary migration pathways; (4) Build a conventional basin model and incorporate new maturity indicators and data bases in a user-friendly way; (5) Develop an algorithm which combines the volume change and viscosities of the compositional maturation model to predict the chemistry of the hydrocarbons that will be expelled from the kerogen to the secondary migration pathways; (6) Develop an algorithm that predicts the flow of hydrocarbons along secondary migration pathways, accounts for mixing of miscible hydrocarbon components along the pathway, and calculates the phase fractionation that will occur as the hydrocarbons move upward down the geothermal and fluid pressure gradients in the basin; and (7) Integrate the above components into a functional model implemented on a PC or low cost workstation.

  18. Analysis of Wet Weather Related Collision Concentration Locations: Empirical Assessment of Continuous Risk Profile

    E-Print Network [OSTI]

    Oh, Soonmi; Chung, Koohong; Ragland, David R; Chan, Ching-Yao

    2009-01-01T23:59:59.000Z

    Analysis of Wet Weather Related Collision ConcentrationThe CRP plot displays wet weather related collision profilefactors responsible for wet weather related collisions is

  19. Evaporation-induced non-wetting droplets on superhydrophilic surfaces

    E-Print Network [OSTI]

    Adera, Solomon (Solomon E.)

    2012-01-01T23:59:59.000Z

    A droplet deposited on a rough, lyophilic surface satisfying the imbibition condition, results in spontaneous spreading and hence complete wetting. However, in this thesis, we demonstrate that this wetting behavior can be ...

  20. actinides separation chemistry: Topics by E-print Network

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

    for those course guides came largely from Chuck Spuches of the Instructional Development Dibble, Theodore 228 Student Orientation Guide Organic Chemistry Engineering Websites...

  1. actinide chemistry: Topics by E-print Network

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

    for those course guides came largely from Chuck Spuches of the Instructional Development Dibble, Theodore 189 Student Orientation Guide Organic Chemistry Engineering Websites...

  2. actinide chemistry progress: Topics by E-print Network

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

    for those course guides came largely from Chuck Spuches of the Instructional Development Dibble, Theodore 210 Student Orientation Guide Organic Chemistry Engineering Websites...

  3. TCD-IISc Symposium "Chemistry & Chemical Biology"

    E-Print Network [OSTI]

    O'Mahony, Donal E.

    actinide chemistry, with a focus on coordination and organometallic uranium chemistry. Paula ColavitaTCD-IISc Symposium "Chemistry & Chemical Biology" Trinity College Clive Williams, Dean of Chemistry. Research areas include supramolecular organic and inorganic chemistry and medicinal chemistry

  4. Bond anisotropy and cohesion of wet granular materials

    E-Print Network [OSTI]

    Boyer, Edmond

    -R, Domaine Universitaire, B.P. 53, 38041 Grenoble, Cedex 9, France. We analyze the Coulomb cohesion of wet. The contact dynamics simulations of a wet material, in which a capillary force law is prescribed, shear strength, Coulomb cohesion, jamming, fragile behavior 1. Introduction Wet granular materials

  5. Accepted Manuscript Variational formulations for surface tension, capillarity and wetting

    E-Print Network [OSTI]

    Frey, Pascal

    Accepted Manuscript Variational formulations for surface tension, capillarity and wetting Gustavo C formulations for surface tension, capillarity and wetting, Comput. Methods Appl. Mech. Engrg. (2011), doi: 10 formulations for surface tension, capillarity and wetting Gustavo C. Buscagliaa,b, , Roberto F. Ausasa,b a

  6. www.kostic.niu.edu/DRnanofluids Wet-Nanotechnology

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    1 www.kostic.niu.edu/DRnanofluids Wet-Nanotechnology: nanofluids at NIU www.kostic.niu.edu/DRnanofluids Dry- vs. Wet-nanotechnology · Fluids (gases & liquids) vs. Solids in Nature and (Chemical & Bio, and processes · Synergy of dry-nanotechnology (solid-state) & wet-nanotechnology (POLY-nanofluids) #12;2 www

  7. Sustainable Development

    E-Print Network [OSTI]

    Brierley, Andrew

    160 Sustainable Development Sustainable Development Degree options BSc or MA (Single Honours Degree) Sustainable Development Contributing Schools Biology; Chemistry; Computer Science; Geography & Geosciences in arts subjects as partner subjects within Sustainable Development, then you should apply for the MA

  8. Erosion dynamics of a wet granular medium

    E-Print Network [OSTI]

    Gautier Lefebvre; Pierre Jop

    2014-12-08T23:59:59.000Z

    Liquid may give strong cohesion properties to a granular medium, and confer a solid-like behavior. We study the erosion of a fixed circular aggregate of wet granular matter subjected to a flow of dry grains inside a half-filled rotating drum. During the rotation, the dry grains flow around the fixed obstacle. We show that its diameter decreases linearly with time for low liquid content, as wet grains are pulled-out of the aggregate. This erosion phenomenon is governed by the properties of the liquids. The erosion rate decreases exponentially with the surface tension while it depends on the viscosity to the power -1. We propose a model based on the force fluctuations arising inside the flow, explaining both dependencies: the capillary force acts as a threshold and the viscosity controls the erosion time scale. We also provide experiments using different flowing grains confirming our model.

  9. Isotope and Nuclear Chemistry Division annual report, FY 1983

    SciTech Connect (OSTI)

    Heiken, J.H.; Lindberg, H.A. (eds.)

    1984-05-01T23:59:59.000Z

    This report describes progress in the major research and development programs carried out in FY 1983 by the Isotope and Nuclear Chemistry Division. It covers radiochemical diagnostics of weapons tests; weapons radiochemical diagnostics research and development; other unclassified weapons research; stable and radioactive isotope production, separation, and applications (including biomedical applications); element and isotope transport and fixation; actinide and transition metal chemistry; structural chemistry, spectroscopy, and applications; nuclear structure and reactions; irradiation facilities; advanced analytical techniques; development and applications; atmospheric chemistry and transport; and earth and planetary processes.

  10. CHEMISTRY 450 Spring, 2009

    E-Print Network [OSTI]

    Stuart, Steven J.

    CHEMISTRY 450 Spring, 2009 Gautam Bhattacharyya, 363 Hunter Labs, phone: 656-1356 gautamb. This course does NOT have a separate laboratory meeting time. Course Goals CH 450 is the Chemistry Capstone to change. #12;CH 450 Spring, 2009 -2- Course Outline (Tentative) Journal due dates are designated each week

  11. Microbial Enhanced Oil Recovery in Fractional-Wet Systems: A Pore-Scale Investigation

    SciTech Connect (OSTI)

    Armstrong, Ryan T.; Wildenschild, Dorthe (Oregon State U.)

    2012-10-24T23:59:59.000Z

    Microbial enhanced oil recovery (MEOR) is a technology that could potentially increase the tertiary recovery of oil from mature oil formations. However, the efficacy of this technology in fractional-wet systems is unknown, and the mechanisms involved in oil mobilization therefore need further investigation. Our MEOR strategy consists of the injection of ex situ produced metabolic byproducts produced by Bacillus mojavensis JF-2 (which lower interfacial tension (IFT) via biosurfactant production) into fractional-wet cores containing residual oil. Two different MEOR flooding solutions were tested; one solution contained both microbes and metabolic byproducts while the other contained only the metabolic byproducts. The columns were imaged with X-ray computed microtomography (CMT) after water flooding, and after MEOR, which allowed for the evaluation of the pore-scale processes taking place during MEOR. Results indicate that the larger residual oil blobs and residual oil held under relatively low capillary pressures were the main fractions recovered during MEOR. Residual oil saturation, interfacial curvatures, and oil blob sizes were measured from the CMT images and used to develop a conceptual model for MEOR in fractional-wet systems. Overall, results indicate that MEOR was effective at recovering oil from fractional-wet systems with reported additional oil recovered (AOR) values between 44 and 80%; the highest AOR values were observed in the most oil-wet system.

  12. CHEMISTRY 1010 CHEMISTRY, HUMANITY AND ENVIRONMENT

    E-Print Network [OSTI]

    Simons, Jack

    day to add classes, select C/NC option or to audit a class is Jan. 23. 3. The last day to withdraw. The University of Utah seeks to provide equal access to its programs, services and activities for people: Chemistry 1010 aims to promote understanding of the basic environmental ingredients, energy, atoms

  13. IN-PACKAGE CHEMISTRY ABSTRACTION

    SciTech Connect (OSTI)

    E. Thomas

    2005-07-14T23:59:59.000Z

    This report was developed in accordance with the requirements in ''Technical Work Plan for Postclosure Waste Form Modeling'' (BSC 2005 [DIRS 173246]). The purpose of the in-package chemistry model is to predict the bulk chemistry inside of a breached waste package and to provide simplified expressions of that chemistry as a function of time after breach to Total Systems Performance Assessment for the License Application (TSPA-LA). The scope of this report is to describe the development and validation of the in-package chemistry model. The in-package model is a combination of two models, a batch reactor model, which uses the EQ3/6 geochemistry-modeling tool, and a surface complexation model, which is applied to the results of the batch reactor model. The batch reactor model considers chemical interactions of water with the waste package materials, and the waste form for commercial spent nuclear fuel (CSNF) waste packages and codisposed (CDSP) waste packages containing high-level waste glass (HLWG) and DOE spent fuel. The surface complexation model includes the impact of fluid-surface interactions (i.e., surface complexation) on the resulting fluid composition. The model examines two types of water influx: (1) the condensation of water vapor diffusing into the waste package, and (2) seepage water entering the waste package as a liquid from the drift. (1) Vapor-Influx Case: The condensation of vapor onto the waste package internals is simulated as pure H{sub 2}O and enters at a rate determined by the water vapor pressure for representative temperature and relative humidity conditions. (2) Liquid-Influx Case: The water entering a waste package from the drift is simulated as typical groundwater and enters at a rate determined by the amount of seepage available to flow through openings in a breached waste package.

  14. Selenium Speciation and Management in Wet FGD Systems

    SciTech Connect (OSTI)

    Searcy, K; Richardson, M; Blythe, G; Wallschlaeger, D; Chu, P; Dene, C

    2012-02-29T23:59:59.000Z

    This report discusses results from bench- and pilot-scale simulation tests conducted to determine the factors that impact selenium speciation and phase partitioning in wet FGD systems. The selenium chemistry in wet FGD systems is highly complex and not completely understood, thus extrapolation and scale-up of these results may be uncertain. Control of operating parameters and application of scrubber additives have successfully demonstrated the avoidance or decrease of selenite oxidation at the bench and pilot scale. Ongoing efforts to improve sample handling methods for selenium speciation measurements are also discussed. Bench-scale scrubber tests explored the impacts of oxidation air rate, trace metals, scrubber additives, and natural limestone on selenium speciation in synthetic and field-generated full-scale FGD liquors. The presence and concentration of redox-active chemical species as well as the oxidation air rate contribute to the oxidation-reduction potential (ORP) conditions in FGD scrubbers. Selenite oxidation to the undesirable selenate form increases with increasing ORP conditions, and decreases with decreasing ORP conditions. Solid-phase manganese [Mn(IV)] appeared to be the significant metal impacting the oxidation of selenite to selenate. Scrubber additives were tested for their ability to inhibit selenite oxidation. Although dibasic acid and other scrubber additives showed promise in early clear liquor (sodium based and without calcium solids) bench-scale tests, these additives did not show strong inhibition of selenite oxidation in tests with higher manganese concentrations and with slurries from full-scale wet FGD systems. In bench-tests with field liquors, addition of ferric chloride at a 250:1 iron-to-selenium mass ratio sorbed all incoming selenite to the solid phase, although addition of ferric salts had no impact on native selenate that already existed in the field slurry liquor sample. As ORP increases, selenite may oxidize to selenate more rapidly than it sorbs to ferric solids. Though it was not possible to demonstrate a decrease in selenium concentrations to levels below the project�¢����s target of 50 ���µg/L during pilot testing, some trends observed in bench-scale testing were evident at the pilot scale. Specifically, reducing oxidation air rate and ORP tends to either retain selenium as selenite in the liquor or shift selenium phase partitioning to the solid phase. Oxidation air flow rate control may be one option for managing selenium behavior in FGD scrubbers. Units that cycle load widely may find it more difficult to impact ORP conditions with oxidation air flow rate control alone. Because decreasing oxidation air rates to the reaction tank showed that all �¢����new�¢��� selenium reported to the solids, the addition of ferric chloride to the pilot scrubber could not show further improvements in selenium behavior. Ferric chloride addition did shift mercury to the slurry solids, specifically to the fine particles. Several competing pathways may govern the reporting of selenium to the slurry solids: co-precipitation with gypsum into the bulk solids and sorption or co-precipitation with iron into the fine particles. Simultaneous measurement of selenium and mercury behavior suggests a holistic management strategy is best to optimize the fate of both of these elements in FGD waters. Work conducted under this project evaluated sample handling and analytical methods for selenium speciation in FGD waters. Three analytical techniques and several preservation methods were employed. Measurements of selenium speciation over time indicated that for accurate selenium speciation, it is best to conduct measurements on unpreserved, filtered samples as soon after sampling as possible. The capital and operating costs for two selenium management strategies were considered: ferric chloride addition and oxidation air flow rate control. For ferric chloride addition, as migh

  15. National Chemistry Week Theme: "Candy: The Sweet Side of Chemistry"

    E-Print Network [OSTI]

    Stephens, Jacqueline

    National Chemistry Week Theme: "Candy: The Sweet Side of Chemistry" Super Science Saturday Saturday-on chemistry and science demonstrations! All students & families are welcome! Fun & educational for all ages! Sponsored by: American Chemical Society LSU Department of Chemistry LSU Athletic Department Free admission

  16. I. Required core Chemistry Courses (1905 & 1925) Chemistry

    E-Print Network [OSTI]

    Advisor: Advisee: I. Required core Chemistry Courses (1905 & 1925) Chemistry CH 111 PY 211 _____ PY 212 _____ (or PY 242 _____ or PY 252 ______) II. Chemistry Options (one required) 1905 (Concentration in Chemistry) Option A (2 advanced CH courses, 401 or higher, only one may

  17. Wet-dry cooling demonstration. Test results

    SciTech Connect (OSTI)

    Allemann, R.T.; DeBellis, D.E.; Werry, E.V.; Johnson, B.M.

    1986-05-01T23:59:59.000Z

    A large-scale test of dry/wet cooling using the ammonia phase-change system, designated the Advanced Concepts Test (ACT), has been operated at Pacific Gas and Electric Company's Kern Station at Bakersfield, California. The facility is capable of condensing 60,000 lbs/h of steam from a small house turbine. Two different modes of combining dry and evaporative cooling have been tested. One uses deluge cooling in which water is allowed to flow over the fins of the dry (air-cooled) heat exchanger on hot days; the other uses a separate evaporative condenser in parallel to the dry heat exchanger. A third mode of enhancing the dry cooling system, termed capacitive cooling has been tested. In this system, the ammonia-cooled steam condenser is supplemented by a parallel conventional water-cooled condenser with water supplied from a closed system. This water is cooled during off-peak hours each night by an ammonia heat pump which rejects heat through the ACT Cooling Tower. If operated over the period of a year, each of the wet/dry systems would use only 25% of the water normally required to reject this heat load in an evaporative cooling tower. The third would consume no water, the evaporative cooling being replaced by the delayed cooling of the closed system water supply.

  18. A round robin evaluation of the corrosiveness of wet residential insulation by electrochemical measurements

    SciTech Connect (OSTI)

    Stansbury, E.E. (Stansbury (E.E.), Knoxville, TN (United States))

    1991-10-01T23:59:59.000Z

    The results of a round cabin evaluation of the use of an electrochemical method of calculating the corrosion rate of low carbon steel in environments related to cellulosic building insulations are reported. Environments included the leachate from a wet cellulosic insulation and solutions based on pure and commercial grades of borax, ammonium sulfate and aluminum sulfate. The pH values of these environments were in the range of 2.5 to 9.5. Electrochemical measurements were made using a direct reading corrosion rate instrument. The calculated corrosion rates were compared with those determined directly by weight loss measurements. Electrochemical measurements were made over a period of 48 hours and weight loss exposures were for two weeks. Poor agreement was observed for the corrosion rates determined electrochemically and the values were consistently larger than those based on weight loss. Reasons proposed for these results included the complex nature of the corrosion product deposits and the control these deposits have on oxygen diffusion to the metal interface. Both factors influence the validity of the calculation of the corrosion rate by the direct reading instrument. It was concluded that development of a viable electrochemical method of general applicability to the evaluation of the corrosiveness of wet residential building thermal insulations were doubtful. Because of the controlling influence of dissolved oxygen on the corrosion rate in the insulation leachate, an alternate evaluation method is proposed in which a thin steel specimen is partially immersed in wet insulation for three weeks. The corrosiveness of the wet insulation is evaluated in terms of the severity of attack near the metal-air-wet insulation interface. With thin metal specimens, complete penetration along the interface is proposed as a pass/fail criterion. An environment of sterile cotton wet with distilled water is proposed as a comparative standard. 9 refs., 2 figs., 3 tabs.

  19. Develop & evaluate materials & additives that enhance thermal...

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

    characteristics of different cell chemistries. Identify and develop more stable cell materials that will lead to more inherently abuse tolerant cell chemistries. Secure sufficient...

  20. Develop & Evaluate Materials & Additives that Enhance Thermal...

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

    of different cell chemistries. Identify and develop more stable cell materials that will lead to more inherently abuse tolerant cell chemistries. Secure...

  1. Wet Gasification of Ethanol Residue: A Preliminary Assessment

    SciTech Connect (OSTI)

    Brown, Michael D.; Elliott, Douglas C.

    2008-09-22T23:59:59.000Z

    A preliminary technoeconomic assessment has been made of several options for the application of catalytic hydrothermal gasification (wet gasification) to ethanol processing residues.

  2. Optimizing wettability of externally wetted microfabricated silicon electrospray thrusters

    E-Print Network [OSTI]

    Garza, Tanya Cruz

    2007-01-01T23:59:59.000Z

    Electrospray propulsion devices with externally wetted architectures have shown favorable performance. The design of microfabricated silicon thrusters and their feed systems requires an understanding of propellant flow ...

  3. Macromolecular Chemistry and Physics

    E-Print Network [OSTI]

    Guo, John Zhanhu

    Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA E-mail: zhanhu.guo@lamar.edu Y. Li, S. Wei Department of Chemistry and Biochemistry, Lamar

  4. Macromolecular Chemistry and Physics

    E-Print Network [OSTI]

    Guo, John Zhanhu

    Engineering, Lamar University, Beaumont, TX 77710, USA E-mail: suying.wei@lamar.edu; zhanhu.guo@lamar.edu Q. He, Prof. S. Wei Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710, USA

  5. Chemistry 455 Chemical Nanotechnology

    E-Print Network [OSTI]

    Rohs, Remo

    Chemistry 455 Chemical Nanotechnology 4 units Prof. Richard Brutchey, Fall 2014 (Lecture = 12:00­12:50 pm MWF) CHEM 455 is an upper-division undergraduate course in Chemical Nanotechnology. The intent

  6. Single-Molecule Studies Supramolecular Chemistry at the Single-Molecule

    E-Print Network [OSTI]

    Bielefeld, Universität

    Single-Molecule Studies Supramolecular Chemistry at the Single-Molecule Level** Rainer Eckel, Robert Ros, Björn Decker, Jochen Mattay,* and Dario Anselmetti* In supramolecular chemistry[1 design, specificity, and molecular switching opens up the development of new molecular materials

  7. Kinetics of wet sodium vapor complex plasma

    SciTech Connect (OSTI)

    Mishra, S. K., E-mail: nishfeb@rediffmail.com [Institute for Plasma Research (IPR), Gandhinagar 382428 (India); Sodha, M. S. [Centre of Energy Studies, Indian Institute of Technology Delhi (IITD), New Delhi 110016 (India)] [Centre of Energy Studies, Indian Institute of Technology Delhi (IITD), New Delhi 110016 (India)

    2014-04-15T23:59:59.000Z

    In this paper, we have investigated the kinetics of wet (partially condensed) Sodium vapor, which comprises of electrons, ions, neutral atoms, and Sodium droplets (i) in thermal equilibrium and (ii) when irradiated by light. The formulation includes the balance of charge over the droplets, number balance of the plasma constituents, and energy balance of the electrons. In order to evaluate the droplet charge, a phenomenon for de-charging of the droplets, viz., evaporation of positive Sodium ions from the surface has been considered in addition to electron emission and electron/ion accretion. The analysis has been utilized to evaluate the steady state parameters of such complex plasmas (i) in thermal equilibrium and (ii) when irradiated; the results have been graphically illustrated. As a significant outcome irradiated, Sodium droplets are seen to acquire large positive potential, with consequent enhancement in the electron density.

  8. BERYLLIUM MEASUREMENT IN COMMERCIALLY AVAILABLE WET WIPES

    SciTech Connect (OSTI)

    Youmans-Mcdonald, L.

    2011-02-18T23:59:59.000Z

    Analysis for beryllium by fluorescence is now an established method which is used in many government-run laboratories and commercial facilities. This study investigates the use of this technique using commercially available wet wipes. The fluorescence method is widely documented and has been approved as a standard test method by ASTM International and the National Institute for Occupational Safety and Health (NIOSH). The procedure involves dissolution of samples in aqueous ammonium bifluoride solution and then adding a small aliquot to a basic hydroxybenzoquinoline sulfonate fluorescent dye (Berylliant{trademark} Inc. Detection Solution Part No. CH-2) , and measuring the fluorescence. This method is specific to beryllium. This work explores the use of three different commercial wipes spiked with beryllium, as beryllium acetate or as beryllium oxide and subsequent analysis by optical fluorescence. The effect of possible interfering metals such as Fe, Ti and Pu in the wipe medium is also examined.

  9. Wetting of metals and glasses on Mo

    SciTech Connect (OSTI)

    Saiz, Eduardo; Tomsia, Antoni P.; Saiz, Eduardo; Lopez-Esteban, Sonia; Benhassine, Mehdi; de Coninck, Joel; Rauch, Nicole; Ruehle, Manfred

    2008-01-08T23:59:59.000Z

    The wetting of low melting point metals and Si-Ca-Al-Ti-O glasses on molybdenum has been investigated. The selected metals (Au, Cu, Ag) form a simple eutectic with Mo. Metal spreading occurs under nonreactive conditions without interdiffusion or ridge formation. The metals exhibit low (non-zero) contact angles on Mo but this requires temperatures higher than 1100 C in reducing atmospheres in order to eliminate a layer of adsorbed impurities on the molybdenum surface. By controlling the oxygen activity in the furnace, glass spreading can take place under reactive or nonreactive conditions. We have found that in the glass/Mo system the contact angle does not decrease under reactive conditions. In all cases, adsorption from the liquid seems to accelerate the diffusivity on the free molybdenum surface.

  10. Chemistry Student Handbook College of Science

    E-Print Network [OSTI]

    Hickman, Mark

    Chemistry Student Handbook College of Science React. Science #12;Contents 2 Welcome to the Department of Chemistry 2 Course Advice 3 What is Chemistry? 4 Career Profiles in Chemistry 5 An Undergraduate Degree in Chemistry 6 Chemistry Streams 13 Chemistry Honours Programme 14 Research

  11. Method for wetting a boron alloy to graphite

    DOE Patents [OSTI]

    Storms, E.K.

    1987-08-21T23:59:59.000Z

    A method is provided for wetting a graphite substrate and spreading a a boron alloy over the substrate. The wetted substrate may be in the form of a needle for an effective ion emission source. The method may also be used to wet a graphite substrate for subsequent joining with another graphite substrate or other metal, or to form a protective coating over a graphite substrate. A noneutectic alloy of boron is formed with a metal selected from the group consisting of nickel (Ni), palladium (Pd), and platinum (Pt) with excess boron, i.e., and atomic percentage of boron effective to precipitate boron at a wetting temperature of less than the liquid-phase boundary temperature of the alloy. The alloy is applied to the substrate and the graphite substrate is then heated to the wetting temperature and maintained at the wetting temperature for a time effective for the alloy to wet and spread over the substrate. The excess boron is evenly dispersed in the alloy and is readily available to promote the wetting and spreading action of the alloy. 1 fig.

  12. Wave Energy Test Site (WETS) Marine Corps Base Hawaii (MCBH)

    E-Print Network [OSTI]

    Wave Energy Test Site (WETS) Marine Corps Base Hawaii (MCBH) Alexandra DeVisser, NAVFAC-EXWC Brian June 10, 2013 #12;Wave Energy Test Site (WETS) Objective: Provide location for year-long in Cable, Sound & Sea Technology (SST) Luis A. Vega, HNEI-University of Hawaii Energy Ocean International

  13. Chemistry at the Dirac Point of Graphene

    E-Print Network [OSTI]

    Sarkar, Santanu

    2013-01-01T23:59:59.000Z

    Haddon, R. C. Covalent Chemistry for Graphene Electronics.P. K. ; Yang, J. X. The Chemistry of Graphene. J. Mater.R. C. Organometallic Chemistry of Extended Periodic ?-

  14. CMR: Chemistry and Metallurgy Research Facility

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

    CMR: Chemistry and Metallurgy Research Facility CMR: Chemistry and Metallurgy Research Facility The Los Alamos National Laboratory (LANL) Chemistry and Metallurgy Research (CMR)...

  15. Chemistry | More Science | ORNL

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamosCharacterization ofChemistry and TransportChemistry of

  16. Chemistry | ornl.gov

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z CPlasma of theChemistry OxideChemistry Soft Matter

  17. Recovery Boiler Corrosion Chemistry

    E-Print Network [OSTI]

    Das, Suman

    11/13/2014 1 Recovery Boiler Corrosion Chemistry Sandy Sharp and Honghi Tran Symposium on Corrosion of a recovery boiler each cause their own forms of corrosion and cracking Understanding the origin of the corrosive conditions enables us to operate a boiler so as to minimize corrosion and cracking select

  18. Chemistry Portfolio (Revised August, 2011)

    E-Print Network [OSTI]

    Baltisberger, Jay H.

    at or above the 75th percentile on the American Chemical Society (ACS) Introductory Chemistry Exami- nation

  19. MAC 560 --Tropospheric Chemistry I Spring, 2009

    E-Print Network [OSTI]

    Miami, University of

    chemistry · to learn the atmospheric chemistry behind well-known phenomena such as smog, acid rain.3. Sulfur chemistry and acid rain 5.4. Nitrogen chemistry 5.5. Organic acids 5.6. Ecological and structural

  20. Chemistry Department Colloquium: Spring, 2012

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Chemistry Department Colloquium: Spring, 2012 Friday, March 16; 3:30 Seminar Hall (room 1315 Chemistry) Lost in Translation: How Regulators Use Science and How Scientists Can Help Bridge Gaps Stephanie to combine her Chemistry background with a legal education to improve the use of science in environmental

  1. Wetting heterogeneity in mixed-wet porous media controls flow dissipation

    E-Print Network [OSTI]

    Julie Murison; Benoît Semin; Jean-Christophe Baret; Stephan Herminghaus; Matthias Schröter; Martin Brinkmann

    2014-07-03T23:59:59.000Z

    Pressure controlled displacement of an oil/water interface is studied in dense packings of functionalized glass beads with well-defined spatial wettability correlations. An enhanced dissipation is observed if the typical extension $\\xi$ of the same-type wetting domains is smaller than the average bead diameter $d$. Three dimensional imaging using X-ray microtomography shows that the frequency $n(s)$ of residual droplet volumes $s$ for different $\\xi$ collapse onto the same curve. This indicates that the additional dissipation for small $\\xi$ is due to contact line pinning rather than an increase of capillary break-up/coalescence events.

  2. THE ADVANCED CHEMISTRY BASINS PROJECT

    SciTech Connect (OSTI)

    William Goddard; Peter Meulbroek; Yongchun Tang; Lawrence Cathles III

    2004-04-05T23:59:59.000Z

    In the next decades, oil exploration by majors and independents will increasingly be in remote, inaccessible areas, or in areas where there has been extensive shallow exploration but deeper exploration potential may remain; areas where the collection of data is expensive, difficult, or even impossible, and where the most efficient use of existing data can drive the economics of the target. The ability to read hydrocarbon chemistry in terms of subsurface migration processes by relating it to the evolution of the basin and fluid migration is perhaps the single technological capability that could most improve our ability to explore effectively because it would allow us to use a vast store of existing or easily collected chemical data to determine the major migration pathways in a basin and to determine if there is deep exploration potential. To this end a the DOE funded a joint effort between California Institute of Technology, Cornell University, and GeoGroup Inc. to assemble a representative set of maturity and maturation kinetic models and develop an advanced basin model able to predict the chemistry of hydrocarbons in a basin from this input data. The four year project is now completed and has produced set of public domain maturity indicator and maturation kinetic data set, an oil chemistry and flash calculation tool operable under Excel, and a user friendly, graphically intuitive basin model that uses this data and flash tool, operates on a PC, and simulates hydrocarbon generation and migration and the chemical changes that can occur during migration (such as phase separation and gas washing). The DOE Advanced Chemistry Basin Model includes a number of new methods that represent advances over current technology. The model is built around the concept of handling arbitrarily detailed chemical composition of fluids in a robust finite-element 2-D grid. There are three themes on which the model focuses: chemical kinetic and equilibrium reaction parameters, chemical phase equilibrium, and physical flow through porous media. The chemical kinetic scheme includes thermal indicators including vitrinite, sterane ratios, hopane ratios, and diamonoids; and a user-modifiable reaction network for primary and secondary maturation. Also provided is a database of type-specific kerogen maturation schemes. The phase equilibrium scheme includes modules for primary and secondary migration, multi-phase equilibrium (flash) calculations, and viscosity predictions.

  3. Nanocrystal/J-aggregate constructs : chemistry, energy transfer, and applications

    E-Print Network [OSTI]

    Walker, Brian J. (Brian Jacob)

    2011-01-01T23:59:59.000Z

    The interaction of light with matter is one of the most central subjects to modern chemistry. Two types of materials, semiconductor nanocrystals and J-aggregates of cyanine dyes, have been developed chiefly due to their ...

  4. Chemistry & Biology Genome-Wide High-Throughput Mining

    E-Print Network [OSTI]

    Yin, Jun

    Chemistry & Biology Article Genome-Wide High-Throughput Mining of Natural-Product Biosynthetic Gene.01.006 SUMMARY We have developed a phage-display method for high-throughput mining of bacterial gene clus- ters

  5. ames wet oxidation process: Topics by E-print Network

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

    ZnO thin films using wet-chemical etching processes on application for organic light emitting diode (OLED) devices Engineering Websites Summary: Fabrication of the ZnO thin films...

  6. assessment meca wet: Topics by E-print Network

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

    the variation of the surface Paris-Sud XI, Universit de 216 Wireless Engineering and Technology, 2013, 4, 117-123 doi:10.4236wet.2013.420018 Published Online April 2013...

  7. Impact of emissions, chemistry, and climate on atmospheric carbon monoxide : 100-year predictions from a global chemistry-climate model

    E-Print Network [OSTI]

    Wang, Chien.; Prinn, Ronald G.

    The possible trends for atmospheric carbon monoxide in the next 100 yr have been illustrated using a coupled atmospheric chemistry and climate model driven by emissions predicted by a global economic development model. ...

  8. Develop and Evaluate Materials and Additives that Enhance Thermal...

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

    of different cell chemistries. Identify and develop more stable cell materials that will lead to more inherently abuse tolerant cell chemistries. Secure...

  9. Dilution physics modeling: Dissolution/precipitation chemistry

    SciTech Connect (OSTI)

    Onishi, Y.; Reid, H.C.; Trent, D.S.

    1995-09-01T23:59:59.000Z

    This report documents progress made to date on integrating dilution/precipitation chemistry and new physical models into the TEMPEST thermal-hydraulics computer code. Implementation of dissolution/precipitation chemistry models is necessary for predicting nonhomogeneous, time-dependent, physical/chemical behavior of tank wastes with and without a variety of possible engineered remediation and mitigation activities. Such behavior includes chemical reactions, gas retention, solids resuspension, solids dissolution and generation, solids settling/rising, and convective motion of physical and chemical species. Thus this model development is important from the standpoint of predicting the consequences of various engineered activities, such as mitigation by dilution, retrieval, or pretreatment, that can affect safe operations. The integration of a dissolution/precipitation chemistry module allows the various phase species concentrations to enter into the physical calculations that affect the TEMPEST hydrodynamic flow calculations. The yield strength model of non-Newtonian sludge correlates yield to a power function of solids concentration. Likewise, shear stress is concentration-dependent, and the dissolution/precipitation chemistry calculations develop the species concentration evolution that produces fluid flow resistance changes. Dilution of waste with pure water, molar concentrations of sodium hydroxide, and other chemical streams can be analyzed for the reactive species changes and hydrodynamic flow characteristics.

  10. New MV cable design for wet environments in underground distribution systems

    SciTech Connect (OSTI)

    Teixeira, M.D.R. Jr. (Ficap Fios e Cabos Plasticos do Brasil SA, Rio De Janeiro (BR))

    1990-04-01T23:59:59.000Z

    This paper describes the development of new wet design MV power cables, up to 35 kV, using EPDM compound as insulation and longitudinal water tightness. The combination of the cable design and the type of insulation compound allow for reduction of the insulation thickness in such a way, as to have an electrical stress at the conductor of 4 kV/mm which is significantly greater than used in MV distribution cables. Following a methodology established, at the author's company, the reliability of this design, cable and EPDM's formulation, in wet location, without metallic water barriers, was well demonstrated. Mini-installation of model cables in service-like conditions, to estimate the ageing rate, are presented and discussed.

  11. Coupled modeling of non-isothermal multiphase flow, solutetransport and reactive chemistry in porous and fractured media: 1. ModelDevelopment and Validation

    SciTech Connect (OSTI)

    Xu, Tianfu; Pruess, Karsten

    1998-09-01T23:59:59.000Z

    Coupled modeling of subsurface multiphase fluid and heat flow, solute transport and chemical reactions can be used for the assessment of acid mine drainage remediation, mineral deposition, waste disposal sites, hydrothermal convection, contaminant transport, and groundwater quality. Here they present a numerical simulation model, TOUGHREACT, which considers non-isothermal multi-component chemical transport in both liquid and gas phases. A wide range of subsurface thermo-physical-chemical processes is considered. The model can be applied to one-, two- or three-dimensional porous and fractured media with physical and chemical heterogeneity. The model can accommodate any number of chemical species present in liquid, gas and solid phases. A variety of equilibrium chemical reactions is considered, such as aqueous complexation, gas dissolution/exsolution, cation exchange, and surface complexation. Mineral dissolution/precipitation can proceed either subject to local equilibrium or kinetic conditions. The coupled model employs a sequential iteration approach with reasonable computing efficiency. The development of the governing equations and numerical approach is presented along with the discussion of the model implementation and capabilities. The model is verified for a wide range of subsurface physical and chemical processes. The model is well suited for flow and reactive transport in variably saturated porous and fractured media. In the second of this two-part paper, three applications covering a variety of problems are presented to illustrate the capabilities of the model.

  12. Jacob P. Brenner Design Specifications for Wet-Bulb Aspirator Apparatus

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    Jacob P. Brenner Thesis: Design Specifications for Wet-Bulb Aspirator Apparatus Project Description the concentration of water vapor in the air is the wet-bulb temperature. The wet-bulb temperature along with the dry-bulb for the testing of HVAC&R equipment. The focus of this research is on the accurate measurement of the wet-bulb

  13. Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems

    SciTech Connect (OSTI)

    Gary Blythe; Conor Braman; Katherine Dombrowski; Tom Machalek

    2010-12-31T23:59:59.000Z

    This document is the final technical report for Cooperative Agreement DE-FC26-04NT41992, 'Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems,' which was conducted over the time-period January 1, 2004 through December 31, 2010. The objective of this project has been to demonstrate at pilot scale the use of solid catalysts and/or fixed-structure mercury sorbents to promote the removal of total mercury and oxidation of elemental mercury in flue gas from coal combustion, followed by wet flue gas desulfurization (FGD) to remove the oxidized mercury at high efficiency. The project was co-funded by the U.S. DOE National Energy Technology Laboratory (DOE-NETL), EPRI, Great River Energy (GRE), TXU Energy (now called Luminant), Southern Company, Salt River Project (SRP) and Duke Energy. URS Group was the prime contractor. The mercury control process under development uses fixed-structure sorbents and/or catalysts to promote the removal of total mercury and/or oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone FGD systems. Oxidized mercury not adsorbed is removed in the wet FGD absorbers and leaves with the byproducts from the FGD system. The project has tested candidate materials at pilot scale and in a commercial form, to provide engineering data for future full-scale designs. Pilot-scale catalytic oxidation tests have been completed for periods of approximately 14 to19 months at three sites, with an additional round of pilot-scale fixed-structure sorbent tests being conducted at one of those sites. Additionally, pilot-scale wet FGD tests have been conducted downstream of mercury oxidation catalysts at a total of four sites. The sites include the two of three sites from this project and two sites where catalytic oxidation pilot testing was conducted as part of a previous DOE-NETL project. Pilot-scale wet FGD tests were also conducted at a fifth site, but with no catalyst or fixed-structure mercury sorbent upstream. This final report presents and discusses detailed results from all of these efforts, and makes a number of conclusions about what was learned through these efforts.

  14. Sandia National Laboratories: atmospheric chemistry

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

    and atmospheric chemistry that is expected to benefit auto and engine manufacturers, oil and gas utilities, and other industries that employ combustion models. A paper...

  15. Sandia National Laboratories: combustion chemistry

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

    and atmospheric chemistry that is expected to benefit auto and engine manufacturers, oil and gas utilities, and other industries that employ combustion models. A paper...

  16. Chemistry and materials science research report

    SciTech Connect (OSTI)

    Not Available

    1990-05-31T23:59:59.000Z

    The research reported here in summary form was conducted under the auspices of Weapons-Supporting Research (WSR) and Institutional Research and Development (IR D). The period covered is the first half of FY90. The results reported here are for work in progress; thus, they may be preliminary, fragmentary, or incomplete. Research in the following areas are briefly described: energetic materials, tritium, high-Tc superconductors, interfaces, adhesion, bonding, fundamental aspects of metal processing, plutonium, synchrotron-radiation-based materials science, photocatalysis on doped aerogels, laser-induced chemistry, laser-produced molecular plasmas, chemistry of defects, dta equipment development, electronic structure study of the thermodynamic and mechanical properties of Al-Li Alloys, and the structure-property link in sub-nanometer materials.

  17. agricultural chemistry: Topics by E-print Network

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

    of Chemistry Honors in Chemistry Research Instructions (Seniors only) Materials Science Websites Summary: Department of Chemistry Honors in Chemistry Research Instructions...

  18. Environmental Soil Chemistry Second Edition Environmental Soil Chemistry illustrates fundamental principles of soil

    E-Print Network [OSTI]

    Sparks, Donald L.

    Environmental Soil Chemistry Second Edition Environmental Soil Chemistry illustrates fundamental principles of soil chemistry with respect to environmental reactions between soils and other natural contemporary training in the basics of soil chemistry and applications to real-world environmental concerns

  19. Chemistry Major and Minor At A Glance

    E-Print Network [OSTI]

    Schmitt, William R.

    Chemistry Major and Minor At A Glance Major I ­ Pre-professional (Medicine, Dentistry, Business, Law, Engineering) Major II ­ ACS Certified e.g. Graduate Study or Entry Level Chemistry Employment. Major III ­ Forensic Chemistry Major IV** ­ Biochemistry Option Chemistry Minor General Chemistry I & II

  20. Chemistry and Biochemistry Graduate Student Spring 2012

    E-Print Network [OSTI]

    Chemistry and Biochemistry Graduate Student Tutors Spring 2012 (All arrangements are solely between.axelrod@mail.utexas.edu Organic Chemistry Chris Bates chrismbates@gmail.com General Chemistry Lecture/Lab Organic Chemistry Amy Bonaparte abonaparte@mail.utexas.edu General and Organic Chemistry Shelly Casciato slcasciato

  1. Chemistry UMass Lowell Commonwealth Honors Track

    E-Print Network [OSTI]

    Massachusetts at Lowell, University of

    Chemistry UMass Lowell Commonwealth Honors Track Scholarship Rises. Freshman Year/ Fall Semester Cr) Honors Chemistry I 3 84.136 (H) Honors Chemistry II 3 84.123 (H) Honors Chemistry I Lab 1 84.124 (H) Honors Chemistry II Lab 1 92.131 Calculus I 4 92.132 Honors Calculus II 4 Hon 110 Honors FYSH (AH) 3 Gen

  2. Chemistry and Biochemistry Graduate Student Summer 2012

    E-Print Network [OSTI]

    Chemistry and Biochemistry Graduate Student Tutors Summer 2012 (All arrangements are solely between.axelrod@mail.utexas.edu Organic Chemistry Chris Bates chrismbates@gmail.com General Chemistry Lecture/Lab Organic Chemistry Amy Bonaparte abonaparte@mail.utexas.edu General and Organic Chemistry Shelly Casciato slcasciato

  3. Analytical Chemistry Laboratory: Progress report for FY 1988

    SciTech Connect (OSTI)

    Green, D.W.; Heinrich, R.R.; Graczyk, D.G.; Lindahl, P.C.; Erickson, M.D.

    1988-12-01T23:59:59.000Z

    The purpose of this report is to summarize the activities of the Analytical Chemistry Laboratory (ACL) at Argonne National Laboratory (ANL) for fiscal year 1988 (October 1987 through September 1988). The Analytical Chemistry Laboratory is a full-cost recovery service center, with the primary mission of providing a broad range of analytical chemistry support services to the scientific and engineering programs at ANL. In addition, the ACL conducts a research program in analytical chemistry, works on instrumental and methods development, and provides analytical services for governmental, educational, and industrial organizations. The ACL handles a wide range of analytical problems, from routine standard analyses to unique problems that require significant development of methods and techniques.

  4. Analytical Chemistry Laboratory progress report for FY 1991

    SciTech Connect (OSTI)

    Green, D.W.; Heinrich, R.R.; Graczyk, D.G.; Lindahl, P.C.; Boparai, A.S.

    1991-12-01T23:59:59.000Z

    The purpose of this report is to summarize the activities of the Analytical Chemistry Laboratory (ACL) at Argonne National Laboratory (ANL) for Fiscal Year 1991 (October 1990 through September 1991). This is the eighth annual report for the ACL. The Analytical Chemistry Laboratory is a full-cost-recovery service center, with the primary mission of providing a broad range of analytical chemistry support services to the scientific and engineering programs at ANL. In addition, the ACL conducts a research program in analytical chemistry, works on instrumental and methods development, and provides analytical services for governmental, educational, and industrial organizations. The ACL handles a wide range of analytical problems, from routine standard analyses to unique problems that require significant development of methods and techniques.

  5. Exploiting locality in quantum computation for quantum chemistry

    E-Print Network [OSTI]

    Jarrod R. McClean; Ryan Babbush; Peter J. Love; Alán Aspuru-Guzik

    2014-07-29T23:59:59.000Z

    Accurate prediction of chemical and material properties from first principles quantum chemistry is a challenging task on traditional computers. Recent developments in quantum computation offer a route towards highly accurate solutions with polynomial cost, however this solution still carries a large overhead. In this perspective, we aim to bring together known results about the locality of physical interactions from quantum chemistry with ideas from quantum computation. We show that the utilization of spatial locality combined with the Bravyi-Kitaev transformation offers an improvement in the scaling of known quantum algorithms for quantum chemistry and provide numerical examples to help illustrate this point. We combine these developments to improve the outlook for the future of quantum chemistry on quantum computers.

  6. Analytical Chemistry Laboratory progress report for FY 1989

    SciTech Connect (OSTI)

    Green, D.W.; Heinrich, R.R.; Graczyk, D.G.; Lindahl, P.C.; Erickson, M.D.

    1989-12-01T23:59:59.000Z

    The purpose of this report is to summarize the activities of the Analytical Chemistry Laboratory (ACL) at Argonne National Laboratory (ANL) for Fiscal Year 1989 (October 1988 through September 1989). The Analytical Chemistry Laboratory is a full-cost-recovery service center, with the primary mission of providing a broad range of analytical chemistry support services to the scientific and engineering programs at ANL. In addition, the ACL conducts a research program in analytical chemistry, works on instrumental and methods development, and provides analytical services for governmental, educational, and industrial organizations. The ACL handles a wide range of analytical problems, from routine standard analyses to unique problems that require significant development of methods and techniques.

  7. Advanced wet-dry cooling tower concept

    E-Print Network [OSTI]

    Snyder, Troxell Kimmel

    The purpose of this years' work has been to test and analyze the new dry cooling tower surface previously developed. The model heat transfer test apparatus built last year has been instrumented for temperature, humidity ...

  8. Development of Novel Front Contract Pastes for Crystalline Silicon Solar Cells

    SciTech Connect (OSTI)

    Duty, C.; Jellison, D. G.E. P.; Joshi, P.

    2012-04-05T23:59:59.000Z

    In order to improve the efficiencies of silicon solar cells, paste to silicon contact formation mechanisms must be more thoroughly understood as a function of paste chemistry, wafer properties and firing conditions. Ferro Corporation has been involved in paste development for over 30 years and has extensive expertise in glass and paste formulations. This project has focused on the characterization of the interface between the top contact material (silver paste) and the underlying silicon wafer. It is believed that the interface between the front contact silver and the silicon wafer plays a dominant role in the electrical performance of the solar cell. Development of an improved front contact microstructure depends on the paste chemistry, paste interaction with the SiNx, and silicon (“Si”) substrate, silicon sheet resistivity, and the firing profile. Typical front contact ink contains silver metal powders and flakes, glass powder and other inorganic additives suspended in an organic medium of resin and solvent. During fast firing cycles glass melts, wets, corrodes the SiNx layer, and then interacts with underlying Si. Glass chemistry is also a critical factor in the development of an optimum front contact microstructure. Over the course of this project, several fundamental characteristics of the Ag/Si interface were documented, including a higher-than-expected distribution of voids along the interface, which could significantly impact electrical conductivity. Several techniques were also investigated for the interfacial analysis, including STEM, EDS, FIB, EBSD, and ellipsometry.

  9. Recent developments in zinc oxide target chemistry

    SciTech Connect (OSTI)

    Heaton, R.C.; Taylor, W.A.; Phillips, D.R.; Jamriska, D.J. Sr.; Garcia, J.B.

    1994-04-01T23:59:59.000Z

    Zinc oxide targets irradiated with high energy protons at the Los Alamos Meson Physics Facility (LAMPF) contain a number of radioactive spallation products in quantities large enough to warrant recovery. This paper describes methods for recovering {sup 7}Be, {sup 46}Sc, and {sup 48}V from such targets and offers suggestions on possible ways to recover additional isotopes. The proposed methods are based on traditional precipitation and ion exchange techniques, are readily adaptable to hot cell use, and produce no hazardous waste components. The products are obtained in moderate to high yields and have excellent radiopurity.

  10. BA in CHEMISTRY (692827) MAP Sheet Department of Chemistry and Biochemistry

    E-Print Network [OSTI]

    Seamons, Kent E.

    BA in CHEMISTRY (692827) MAP Sheet Department of Chemistry and Biochemistry For students entering Chemistry and Biochemistry Department requires the final 10 hours of required chemistry credit to be taken for graduation. Complete the following: Chem 111* Honors Principles of Chemistry Chem 112 Principles of Chemistry

  11. Chemistry -Bachelor of Science (SCHUG) Total Credits Required: 128 Chemistry -ACS Certified

    E-Print Network [OSTI]

    Chemistry - Bachelor of Science (SCHUG) Total Credits Required: 128 Chemistry - ACS Certified Major of the following courses Course Credits Course Credits CH1150 University Chemistry I AND 3 CH4110 Pharmaceutical Chemistry: Drug Action 3 CH1151 University Chemistry Lab 1 AND 1 CH4120 Pharmaceutical Chemistry: Drug

  12. Chemistry -Bachelor of Science (SCH1UG) Total Credits Required: 128 Chemistry/Polymers -ACS Certified

    E-Print Network [OSTI]

    Chemistry - Bachelor of Science (SCH1UG) Total Credits Required: 128 Chemistry/Polymers - ACS credits Course Credits Course Credits CH1150 University Chemistry I AND 3 CH4610 Intro to Polymer Science 3 CH1151 University Chemistry Lab 1 AND 1 CH4620 Polymer Chemistry 3 CH1153 University Chemistry

  13. Wetting of soap bubbles on hydrophilic, hydrophobic and superhydrophobic surfaces

    E-Print Network [OSTI]

    Steve Arscott

    2013-03-26T23:59:59.000Z

    Wetting of sessile bubbles on solid and liquid surfaces has been studied. A model is presented for the contact angle of a sessile bubble based on a modified Young equation - the experimental results agree with the model. A hydrophilic surface results in a bubble contact angle of 90 deg whereas on a superhydrophobic surface one observes 134 deg. For hydrophilic surfaces, the bubble angle diminishes with bubble radius - whereas on a superhydrophobic surface, the bubble angle increases. The size of the Plateau borders governs the bubble contact angle - depending on the wetting of the surface.

  14. Wetting of soap bubbles on hydrophilic, hydrophobic and superhydrophobic surfaces

    E-Print Network [OSTI]

    Arscott, Steve

    2013-01-01T23:59:59.000Z

    Wetting of sessile bubbles on solid and liquid surfaces has been studied. A model is presented for the contact angle of a sessile bubble based on a modified Young equation - the experimental results agree with the model. A hydrophilic surface results in a bubble contact angle of 90 deg whereas on a superhydrophobic surface one observes 134 deg. For hydrophilic surfaces, the bubble angle diminishes with bubble radius - whereas on a superhydrophobic surface, the bubble angle increases. The size of the Plateau borders governs the bubble contact angle - depending on the wetting of the surface.

  15. Course Syllabus: Chemistry 3AL Course Information

    E-Print Network [OSTI]

    Alvarez-Cohen, Lisa

    Course Syllabus: Chemistry 3AL Course Information Course Name Chemistry 3AL Course Instructor are online. Chemistry 3AL Syllabus https://elearning.berkeley.edu/AngelUploads/Content/2013SUC... 1 of 5 5

  16. Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems

    SciTech Connect (OSTI)

    Gary M. Blythe

    2006-03-31T23:59:59.000Z

    This document summarizes progress on Cooperative Agreement DE-FC26-04NT41992, ''Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems'', during the time-period January 1 through March 31, 2006. The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in flue gas from coal combustion, and the use of a wet flue gas desulfurization (FGD) system downstream to remove the oxidized mercury at high efficiency. The project is being co-funded by the U.S. DOE National Energy Technology Laboratory, EPRI, Great River Energy (GRE), TXU Generation Company LP, the Southern Company, and Duke Energy. URS Group is the prime contractor. The mercury control process under development uses honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone FGD systems. Oxidized mercury is removed in the wet FGD absorbers and leaves with the byproducts from the FGD system. The current project is testing previously identified catalyst materials at pilot scale and in a commercial form to provide engineering data for future full-scale designs. The pilot-scale tests will continue for approximately 14 months or longer at each of two sites to provide longer-term catalyst life data. Pilot-scale wet FGD tests are being conducted periodically at each site to confirm the ability to scrub the catalytically oxidized mercury at high efficiency. This is the ninth reporting period for the subject Cooperative Agreement. During this period, project efforts primarily consisted of operating the catalyst pilot units at the TXU Generation Company LP's Monticello Steam Electric Station and at Georgia Power's Plant Yates. Two catalyst activity measurement trips were made to Plant Yates during the quarter. This Technical Progress Report presents catalyst activity results from the oxidation catalyst pilot unit at Plant Yates and discusses the status of the pilot unit at Monticello.

  17. Screen Electrode Materials & Cell Chemistries and Streamlining...

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

    & Cell Chemistries and Streamlining Optimization of Electrode Screen Electrode Materials & Cell Chemistries and Streamlining Optimization of Electrode 2010 DOE Vehicle Technologies...

  18. Cetane Performance and Chemistry Comparing Conventional Fuels...

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

    Performance and Chemistry Comparing Conventional Fuels and Fuels Derived from Heavy Crude Sources Cetane Performance and Chemistry Comparing Conventional Fuels and Fuels...

  19. Nanostructure, Chemistry and Crystallography of Iron Nitride...

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

    Nanostructure, Chemistry and Crystallography of Iron Nitride Magnetic Materials by Ultra-High-Resolution Electron Microscopy and Related Methods Nanostructure, Chemistry and...

  20. A chemistry tale of two carbons | EMSL

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

    A chemistry tale of two carbons A chemistry tale of two carbons Released: September 03, 2012 Comprehensive field study of urban, natural emissions interacting to affect climate...

  1. Water chemistry of breeder reactor steam generators. [LMFBR

    SciTech Connect (OSTI)

    Simpson, J.L.; Robles, M.N.; Spalaris, C.N.; Moss, S.A.

    1980-08-01T23:59:59.000Z

    The water quality requirements will be described for breeder reactor steam generators, as well as specifications for balance of plant protection. Water chemistry details will be discussed for the following power plant conditions: feedwater and recirculation water at above and below 5% plant power, refueling or standby, makeup water, and wet layup. Experimental data will be presented from tests which included a departure from nucleate boiling experiment, the Few Tube Test, with a seven tube evaporator and three tube superheater, and a verification of control and on-line measurement of sodium ion in the ppB range. Sampling and instrumentation requirements to insure adherence to the specified water quality will be described. Evaporator cleaning criteria and data from laboratory testing of chemical cleaning solutions with emphasis on flow, chemical composition, and temperature will be discussed.

  2. Directional Wetting in Anisotropic Inverse Opals Katherine R. Phillips,

    E-Print Network [OSTI]

    Aizenberg, Joanna

    the nano- to microscale voids. Here, we investigate how liquid wetting in highly ordered inverse opals template of colloidal particles. This highly ordered structure acts as a photonic crystal, strongly or not a given liquid will fill the structure spontaneously upon contact. Using alkylchlorosi- lanes,18 silica

  3. Interference evaluation between manifold and wet Christmas tree CP systems

    SciTech Connect (OSTI)

    Brasil, S.L.D.C.; Baptista, W.

    2000-05-01T23:59:59.000Z

    Offshore production wells are controlled by valves installed in the marine soil, called wet Christmas trees (WCTs). A manifold receives the production of several wells and transports it to the platform. The manifold is cathodically protected by Al anodes and the WCT by Zn anodes. A computer simulation was carried out to evaluate the interference between the equipment cathodic protection systems.

  4. Thermo-Wetting and Friction Reduction Characterization of

    E-Print Network [OSTI]

    Hidrovo, Carlos H.

    such surfaces include frost prevention on aircraft flight surfaces to self-cleaning features on solar energy panels [1,5]. One way to achieve superhydrophobicity is through the micro- geometry modification of low energy surfaces. Two models repre- sent the wetting behavior of such microtextured surfaces: the Wenzel

  5. Dry/wet performance of a plate-fin air-cooled heat exchanger with continuous corrugated fins

    SciTech Connect (OSTI)

    Hauser, S.G.; Kreid, D.K.; Johnson, B.M.

    1981-01-01T23:59:59.000Z

    The performance and operating characteristics of a plate-fin heat exchanger in dry/wet or deluge operations was experimentally determined. Development of the deluge heat/mass transfer model continued. The experiments were conducted in a specially-designed wind tunnel at the PNL. Air that was first heated and humidified to specified conditions was circulated at a controlled rate through a 2 ft x 6 ft heat exchanger module. The heat exchanger used in the tests was a wavy surface, plate fin on tube configuration. Hot water was circulated through the tubes at high flow rates to maintain an essentially isothermal condition on the tube side. Deionized water sprayed on the top of the vertically oriented plate fins was collected at the bottom of the core and recirculated. Instrumentation was provided for measurement of flow rates and thermodynamic conditions in the air, in the core circulation water, and in the deluge water. Measurements of the air side pressure drop and heat rejection rate were made as a function of air flow rate, air inlet temperature and humidity, deluge water flow rate, and the core inclination from the vertical. An overall heat transfer coefficient and an effective deluge film convective coefficient was determined. The deluge model, for predicting heat transfer from a wet finned heat exchanger was further developed and refined, and a major extension of the model was formulated that permits simultaneous calculation of both the heat transfer and evaporation rates from the wetted surface. The experiments showed an increase in the heat rejection rate due to wetting, accompanied by a proportional increase in the air side pressure drop. For operation at the same air side pressure drop, the enhancement ratio Q/sub w//Q/sub d/ varied between 2 and 5 for the conditions tested. Thus, the potential enhancement of heat transfer due to wetting can be substantial.

  6. Adsorption calorimetry of water-wet and oil-wet minerals

    SciTech Connect (OSTI)

    Noll, L.A.

    1986-03-01T23:59:59.000Z

    This project is a continuation of a research program designed to understand and model adsorption of enhanced oil recovery (EOR) chemical flooding material onto reservoir minerals. The understanding and modeling of adsorption will ultimately lead to an effective way to select EOR chemicals which are most cost effective. This report describes progress made from October 1, 1984 to September 30, 1985. It is divided into three parts: (1) modeling of adsorption, (2) adsorption of surfactants from solutions of brine and aqueous cosurfactant, and (3) proving the usefulness of titration calorimetry. In the first part, the surface described was water-wet; in the other parts, surfaces of different wettability were used in the investigations. The adsorption of cosurfactant from hydrocarbon onto silica is modeled by a Langmuir isotherm. This model indicates that the adsorption is driven by enthalpy, taking place with an unfavorable entropy change. It is physical adsorption and does not exceed monolayer coverage. Strong brine seems to have little effect on the adsorption of nonionic surfactant, except in the case of Florisil, a magnesia containing silica. In the presence of cosurfactant, the energy of adsorption is in general higher than that from pure water. All of these enthalpies of adsorption are negative, thus implying lower adsorption as temperature is raised. The titration calorimeter has proved to be a useful instrument for studying adsorption. The measurement of the interaction of nonionic surfactant with silica show satisfactory agreement with the results of the flow calorimeter. Adsorption on kaolin, bentonite, and sandstone can be measured with this instrument, whereas these solids are not amenable to flow calorimetry. 10 figs. 6 tabs.

  7. Isotope and Nuclear Chemistry Division annual report FY 1986, October 1985-September 1986

    SciTech Connect (OSTI)

    Heiken, J.H. (ed.)

    1987-06-01T23:59:59.000Z

    This report describes progress in the major research and development programs carried out in FY 1986 by the Isotope and Nuclear Chemistry Division. The report includes articles on radiochemical diagnostics and weapons tests; weapons radiochemical diagnostics research and development; other unclassified weapons research; stable and radioactive isotope production and separation; chemical biology and nuclear medicine; element and isotope transport and fixation; actinide and transition metal chemistry; structural chemistry, spectroscopy, and applications; nuclear structure and reactions; irradiation facilities; advanced concepts and technology; and atmospheric chemistry.

  8. Forsterite [Mg2SiO4)] Carbonation in Wet Supercritical CO2: An...

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

    Forsterite Mg2SiO4) Carbonation in Wet Supercritical CO2: An in situ High Pressure X-Ray Diffraction Study. Forsterite Mg2SiO4) Carbonation in Wet Supercritical CO2: An in situ...

  9. Analytical Chemistry Laboratory. Progress report for FY 1996

    SciTech Connect (OSTI)

    Green, D.W.; Boparai, A.S.; Bowers, D.L.

    1996-12-01T23:59:59.000Z

    The purpose of this report is to summarize the activities of the Analytical Chemistry Laboratory (ACL) at Argonne National Laboratory (ANL) for Fiscal Year (FY) 1996. This annual report is the thirteenth for the ACL. It describes effort on continuing and new projects and contributions of the ACL staff to various programs at ANL. The ACL operates in the ANL system as a full-cost-recovery service center, but has a mission that includes a complementary research and development component: The Analytical Chemistry Laboratory will provide high-quality, cost-effective chemical analysis and related technical support to solve research problems of our clients -- Argonne National Laboratory, the Department of Energy, and others -- and will conduct world-class research and development in analytical chemistry and its applications. Because of the diversity of research and development work at ANL, the ACL handles a wide range of analytical chemistry problems. Some routine or standard analyses are done, but the ACL usually works with commercial laboratories if our clients require high-volume, production-type analyses. It is common for ANL programs to generate unique problems that require significant development of methods and adaption of techniques to obtain useful analytical data. Thus, much of the support work done by the ACL is very similar to our applied analytical chemistry research.

  10. National Nuclear Chemistry Summer School

    Broader source: Energy.gov [DOE]

    The Division of Nuclear Chemistry and Technology of the American Chemical Society (ACS) is sponsoring two INTENSIVE six-week Summer Schools in Nuclear and Radiochemistry for undergraduates. Funding is provided by the US Department of Energy.

  11. National Nuclear Chemistry Summer School

    Broader source: Energy.gov [DOE]

    he Division of Nuclear Chemistry and Technology of the American Chemical Society (ACS) is sponsoring two INTENSIVE six-week Summer Schools in Nuclear and Radiochemistry for undergraduates. Funding...

  12. Computer simulations of the wetting properties of neon on heterogeneous surfaces Stefano Curtarolo,1,2,

    E-Print Network [OSTI]

    Curtarolo, Stefano

    Computer simulations of the wetting properties of neon on heterogeneous surfaces Stefano Curtarolo Received 31 August 1998 We use the grand canonical Monte Carlo method to study the nature of wetting the grand canonical Monte Carlo method of statistical mechanics to compute the nature of wetting transitions

  13. CHEMISTRY 2011 Academic regulations for the Bachelor's degree in Chemistry 2011

    E-Print Network [OSTI]

    CHEMISTRY 2011 Academic regulations for the Bachelor's degree in Chemistry 2011 1. Framework) in Chemistry. Academic line and main subject areas of the degree The Bachelor's degree in Chemistry students a basic introduction to the Chemistry disciplines. In addition, the Bachelor's degree programme

  14. Investigation of combined heat and mass transfer from a wet heat exchanger. Part 2. Experimental results and operational characteristics of heat exchangers in dry/wet operations

    SciTech Connect (OSTI)

    Hauser, S.G.; Kreid, D.K.; Johnson, B.M.

    1981-04-01T23:59:59.000Z

    This second part of a two-part paper summarizes the experimental evaluation of a plate finned heat exchanger both with and without the surface wetted by a flowing film of water. The results indicate an increase in heat transfer during wet operation of two to five times over that of dry operation for the same meteorological conditions. The deluge model is shown to accurately predict the wet performance using an experimentally determined deluge film coefficient and the dry performance characteristics.

  15. Direct Use of Wet Ethanol in a Homogeneous Charge Compression Ignition (HCCI) Engine: Experimental and Numerical Results

    E-Print Network [OSTI]

    Mack, John Hunter; Flowers, Daniel L; Aceves, Salvador M; Dibble, Robert W

    2007-01-01T23:59:59.000Z

    The energy balance of corn ethanol revisited, Transaction offor autoignition. The wet ethanol modeling study [REF] usedengine running on wet ethanol. Fuel mixtures studied range

  16. Wetting and free surface flow modeling for potting and encapsulation.

    SciTech Connect (OSTI)

    Brooks, Carlton, F.; Brooks, Michael J. (Los Alamos National Laboratory, Los Alamos, NM); Graham, Alan Lyman (Los Alamos National Laboratory, Los Alamos, NM); Noble, David F. (David Frederick) (.; )); Notz, Patrick K.; Hopkins, Matthew Morgan; Castaneda, Jaime N.; Mahoney, Leo James (Kansas City Plant, Kansas City, MO); Baer, Thomas A.; Berchtold, Kathryn (Los Alamos National Laboratory, Los Alamos, NM); Adolf, Douglas Brian; Wilkes, Edward Dean; Rao, Rekha Ranjana; Givler, Richard C.; Sun, Amy Cha-Tien; Cote, Raymond O.; Mondy, Lisa Ann; Grillet, Anne Mary; Kraynik, Andrew Michael

    2007-06-01T23:59:59.000Z

    As part of an effort to reduce costs and improve quality control in encapsulation and potting processes the Technology Initiative Project ''Defect Free Manufacturing and Assembly'' has completed a computational modeling study of flows representative of those seen in these processes. Flow solutions are obtained using a coupled, finite-element-based, numerical method based on the GOMA/ARIA suite of Sandia flow solvers. The evolution of the free surface is solved with an advanced level set algorithm. This approach incorporates novel methods for representing surface tension and wetting forces that affect the evolution of the free surface. In addition, two commercially available codes, ProCAST and MOLDFLOW, are also used on geometries representing encapsulation processes at the Kansas City Plant. Visual observations of the flow in several geometries are recorded in the laboratory and compared to the models. Wetting properties for the materials in these experiments are measured using a unique flowthrough goniometer.

  17. PILOT TESTING OF MERCURY OXIDATION CATALYSTS FOR UPSTREAM OF WET FGD SYSTEMS

    SciTech Connect (OSTI)

    Gary M. Blythe

    2003-05-01T23:59:59.000Z

    This document summarizes progress on Cooperative Agreement DE-FC26-01NT41185, ''Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems,'' during the time period January 1, 2003 through March 31, 2003. The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. The project is being funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-01NT41185. EPRI, Great River Energy (GRE), and City Public Service (CPS) of San Antonio are project cofunders. URS Group is the prime contractor. The mercury control process under development uses catalyst materials applied to honeycomb substrates to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone flue gas desulfurization (FGD) systems. Oxidized mercury is removed in the wet FGD absorbers and co-precipitates with the byproducts from the FGD system. The current project is testing previously identified, effective catalyst materials at a larger, pilot scale and in a commercial form, to provide engineering data for future full-scale designs. The pilot-scale tests will continue for up to 14 months at each of two sites to provide longer-term catalyst life data. This is the sixth full reporting period for the subject Cooperative Agreement. During this period, project efforts included continued operation of the pilot unit with three catalysts, conducting catalyst activity measurements, and procuring the fourth catalyst, all for the GRE Coal Creek pilot unit site. Laboratory efforts were also conducted to support catalyst selection for the second pilot unit site, at CPS' Spruce Plant. This technical progress report provides an update on these efforts.

  18. PILOT TESTING OF MERCURY OXIDATION CATALYSTS FOR UPSTREAM OF WET FGD SYSTEMS

    SciTech Connect (OSTI)

    Gary M. Blythe

    2002-10-04T23:59:59.000Z

    This document summarizes progress on Cooperative Agreement DE-FC26-01NT41185, Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems, during the time period July 1, 2002 through September 30, 2002. The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. The project is being funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-01NT41185. EPRI, Great River Energy (GRE), and City Public Service (CPS) of San Antonio are project co-funders. URS Group is the prime contractor. The mercury catalytic oxidation process under development uses catalyst materials applied to honeycomb substrates to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone flue gas desulfurization (FGD) systems. Oxidized mercury is removed in the wet FGD absorbers and co-precipitates in a stable form with the byproducts from the FGD system. The coprecipitated mercury does not appear to adversely affect the disposal or reuse properties of the FGD byproduct. The current project will test previously identified, effective catalyst materials at a larger, pilot scale and in a commercial form, so as to provide engineering data for future full-scale designs. The pilot-scale tests will continue for up to 14 months at each of two sites to provide longer-term catalyst life data. This is the fourth full reporting period for the subject Cooperative Agreement. During this period, most of the project efforts were related to completing, installing and starting up the pilot unit, completing laboratory runs to size catalysts, and procuring catalysts for the pilot unit. This technical progress report provides an update on these efforts.

  19. PILOT TESTING OF MERCURY OXIDATION CATALYSTS FOR UPSTREAM OF WET FGD SYSTEMS

    SciTech Connect (OSTI)

    Gary M. Blythe

    2003-07-01T23:59:59.000Z

    This document summarizes progress on Cooperative Agreement DE-FC26-01NT41185, ''Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems,'' during the time-period April 1, 2003 through June 30, 2003. The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. The project is being funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-01NT41185. EPRI, Great River Energy (GRE), and City Public Service (CPS) of San Antonio are project cofunders. URS Group is the prime contractor. The mercury control process under development uses catalyst materials applied to honeycomb substrates to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone flue gas desulfurization (FGD) systems. Oxidized mercury is removed in the wet FGD absorbers and co-precipitates with the byproducts from the FGD system. The current project is testing previously identified, effective catalyst materials at a larger, pilot scale and in a commercial form, to provide engineering data for future full-scale designs. The pilot-scale tests will continue for approximately 14 months at each of two sites to provide longer-term catalyst life data. This is the seventh full reporting period for the subject Cooperative Agreement. During this period, project efforts included continued operation of the first pilot unit, conducting catalyst activity measurements, installing sonic horns for on-line catalyst cleaning, and installing the fourth catalyst, all for the GRE Coal Creek site. CPS began installation of the second mercury oxidation catalyst pilot unit at their Spruce Plant during the quarter. Laboratory efforts were conducted to support catalyst selection for that second pilot unit. This technical progress report provides an update on these efforts.

  20. PILOT TESTING OF MERCURY OXIDATION CATALYSTS FOR UPSTREAM OF WET FGD SYSTEMS

    SciTech Connect (OSTI)

    Gary M. Blythe

    2002-07-17T23:59:59.000Z

    This document summarizes progress on Cooperative Agreement DE-FC26-01NT41185, Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems, during the time period April 1, 2002 through June 30, 2002. The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. The project is being funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-01NT41185. EPRI, Great River Energy (GRE), and City Public Service (CPS) of San Antonio are project co-funders. URS Group is the prime contractor. The mercury catalytic oxidation process under development uses catalyst materials applied to honeycomb substrates to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone flue gas desulfurization (FGD) systems. Oxidized mercury is removed in the wet FGD absorbers and co-precipitates in a stable form with the byproducts from the FGD system. The co-precipitated mercury does not appear to adversely affect the disposal or reuse properties of the FGD byproduct. The current project will test previously identified, effective catalyst materials at a larger, pilot scale and in a commercial form, so as to provide engineering data for future full-scale designs. The pilot-scale tests will continue for up to 14 months at each of two sites to provide longer-term catalyst life data. This is the third full reporting period for the subject Cooperative Agreement. During this period, most of the project efforts were related to constructing the pilot unit and conducting laboratory runs to help size catalysts for the pilot unit. This technical progress report provides an update on these two efforts.

  1. PILOT TESTING OF MERCURY OXIDATION CATALYSTS FOR UPSTREAM OF WET FGD SYSTEMS

    SciTech Connect (OSTI)

    Gary M. Blythe

    2003-01-21T23:59:59.000Z

    This document summarizes progress on Cooperative Agreement DE-FC26-01NT41185, Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems, during the time period October 1, 2002 through December 31, 2002. The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. The project is being funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-01NT41185. EPRI, Great River Energy (GRE), and City Public Service (CPS) of San Antonio are project co-funders. URS Group is the prime contractor. The mercury catalytic oxidation process under development uses catalyst materials applied to honeycomb substrates to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone flue gas desulfurization (FGD) systems. Oxidized mercury is removed in the wet FGD absorbers and co-precipitates with the byproducts from the FGD system. The co-precipitated mercury does not appear to adversely affect the disposal or reuse properties of the FGD byproduct. The current project testing previously identified, effective catalyst materials at a larger, pilot scale and in a commercial form, to provide engineering data for future fullscale designs. The pilot-scale tests will continue for up to 14 months at each of two sites to provide longer-term catalyst life data. This is the fifth full reporting period for the subject Cooperative Agreement. During this period, project efforts included starting up the pilot unit with three catalysts at the first site, conducting catalyst activity measurements, completing comprehensive flue gas sampling and analyses, and procuring additional catalysts for the pilot unit. This technical progress report provides an update on these efforts.

  2. Wetting of mercury electrode by crude oil in surfactant solutions

    SciTech Connect (OSTI)

    Kuvshinov, V.A.; Altumina, L.K.; Genkina, L.F.

    1985-09-01T23:59:59.000Z

    A study has been made of electrosurface phenomena in the system consisting of crude oil, mercury, and a surfactant solution. The type of relationship between the wetting of mercury by oil in surfactant solutions and the electric potential of the mercury has been determined. Feasibility has been demonstrated for the use of the mercury/oil/surfactant solution system as a model in studying the oil-displacing capabilities of various surfactants.

  3. The Fernald wet records recovery project: A case history

    SciTech Connect (OSTI)

    Sterling, H.J.; Devir, B.R.; Hawley, R.A. [Fernald Environmental Restoration Management Corp., Cincinnati, OH (United States); Freesmeyer, M.T. [USDOE Ohio Field Office (United States)

    1995-06-22T23:59:59.000Z

    This paper discusses a project performed to recover wet records discovered in January 1995 at the Fernald Environmental Management Project (FEMP). This paper discusses the emergency and record recovery phases of the project, the technical options considered for records recovery, and special measures which were required due to radiological contamination of the records. Also, the root causes and lessons learned from the incident, and path forward for future records management operations at Fernald, are discussed.

  4. Wet-steam erosion of steam turbine disks and shafts

    SciTech Connect (OSTI)

    Averkina, N. V. [JSC 'NPO TsKTI' (Russian Federation); Zheleznyak, I. V. [Leningradskaya AES branch of JSC 'Kontsern Rosenergoatom' (Russian Federation); Kachuriner, Yu. Ya.; Nosovitskii, I. A.; Orlik, V. G., E-mail: orlikvg@mail.ru [JSC 'NPO TsKTI' (Russian Federation); Shishkin, V. I. [Leningradskaya AES branch of JSC 'Kontsern Rosenergoatom' (Russian Federation)

    2011-01-15T23:59:59.000Z

    A study of wet-steam erosion of the disks and the rotor bosses or housings of turbines in thermal and nuclear power plants shows that the rate of wear does not depend on the diagrammed degree of moisture, but is determined by moisture condensing on the surfaces of the diaphragms and steam inlet components. Renovating the diaphragm seals as an assembly with condensate removal provides a manifold reduction in the erosion.

  5. Photocatalytic oxidation and reduction chemistry and a new process for treatment of pink water and related contaminated water

    SciTech Connect (OSTI)

    Blake, D.M.; Wolfrum E.; Boulter, J. [and others

    1996-10-01T23:59:59.000Z

    The objective of this project was to develop new photocatalytic or other innovative process chemistry for the treatment of pink water and related contaminated water.

  6. Mercury removal in utility wet scrubber using a chelating agent

    DOE Patents [OSTI]

    Amrhein, Gerald T. (Louisville, OH)

    2001-01-01T23:59:59.000Z

    A method for capturing and reducing the mercury content of an industrial flue gas such as that produced in the combustion of a fossil fuel or solid waste adds a chelating agent, such as ethylenediaminetetraacetic acid (EDTA) or other similar compounds like HEDTA, DTPA and/or NTA, to the flue gas being scrubbed in a wet scrubber used in the industrial process. The chelating agent prevents the reduction of oxidized mercury to elemental mercury, thereby increasing the mercury removal efficiency of the wet scrubber. Exemplary tests on inlet and outlet mercury concentration in an industrial flue gas were performed without and with EDTA addition. Without EDTA, mercury removal totaled 42%. With EDTA, mercury removal increased to 71%. The invention may be readily adapted to known wet scrubber systems and it specifically provides for the removal of unwanted mercury both by supplying S.sup.2- ions to convert Hg.sup.2+ ions into mercuric sulfide (HgS) and by supplying a chelating agent to sequester other ions, including but not limited to Fe.sup.2+ ions, which could otherwise induce the unwanted reduction of Hg.sup.2+ to the form, Hg.sup.0.

  7. 'Elastic' fluctuation-induced effects in smectic wetting films

    SciTech Connect (OSTI)

    Pikina, E. S., E-mail: elena@ogri.r [Russian Academy of Sciences, Oil and Gas Research Institute (Russian Federation)

    2009-11-15T23:59:59.000Z

    The Li-Kardar field theory approach is generalized to wetting smectic films and the 'elastic' fluctuation-induced interaction is obtained between the external flat bounding surface and distorted IA (isotropic liquid-smectic A) interface acting as an 'internal' (bulk) boundary of the wetting smectic film under the assumption that the IA interface is essentially 'softer' than the surface smectic layer. This field theory approach allows calculating the fluctuation-induced corrections in Hamiltonians of the so-called 'correlated' liquids confined by two surfaces, in the case where one of the bounding surfaces is 'rough' and with different types of surface smectic layer anchoring. We obtain that in practice, the account of thermal displacements of the smectic layers in a wetting smectic film reduces to the addition of two contributions to the IA interface Hamiltonian. The first, so-called local contribution describes the long-range thermal 'elastic' repulsion of the fluctuating IA interface from the flat bounding surface. The second, so-called nonlocal contribution is connected with the occurrence of an 'elastic' fluctuation-induced correction to the stiffness of the IA interface. An analytic expression for this correction is obtained.

  8. Wetting kinetics of water nano-droplet containing non-surfactant nanoparticles: A molecular dynamics study

    SciTech Connect (OSTI)

    Lu, Gui [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China) [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China); Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104 (United States); Hu, Han; Sun, Ying, E-mail: yyduan@tsinghua.edu.cn, E-mail: ysun@coe.drexel.edu [Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104 (United States)] [Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104 (United States); Duan, Yuanyuan, E-mail: yyduan@tsinghua.edu.cn, E-mail: ysun@coe.drexel.edu [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China)] [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China)

    2013-12-16T23:59:59.000Z

    In this Letter, dynamic wetting of water nano-droplets containing non-surfactant gold nanoparticles on a gold substrate is examined via molecular dynamics simulations. The results show that the addition of non-surfactant nanoparticles hinders the nano-second droplet wetting process, attributed to the increases in both surface tension of the nanofluid and friction between nanofluid and substrate. The droplet wetting kinetics decreases with increasing nanoparticle loading and water-particle interaction energy. The observed wetting suppression and the absence of nanoparticle ordering near the contact line of nano-sized droplets differ from the wetting behaviors reported from nanofluid droplets of micron size or larger.

  9. Analytical Chemistry Laboratory progress report for FY 1985

    SciTech Connect (OSTI)

    Green, D.W.; Heinrich, R.R.; Jensen, K.J.

    1985-12-01T23:59:59.000Z

    The Analytical Chemistry Laboratory is a full-cost-recovery service center, with the primary mission of providing a broad range of technical support services to the scientific and engineering programs at ANL. In addition, ACL conducts a research program in analytical chemistry, works on instrumental and methods development, and provides analytical services for governmental, educational, and industrial organizations. The ACL handles a wide range of analytical problems, from routine standard analyses to unique problems that require significant development of methods and techniques. The purpose of this report is to summarize the technical and administrative activities of the Analytical Chemistry Laboratory (ACL) at Argonne National Laboratory (ANL) for Fiscal Year 1985 (October 1984 through September 1985). This is the second annual report for the ACL. 4 figs., 1 tab.

  10. Department of Chemistry, University of California, Berkeley 640 Latimer Hall, Berkeley, CA, 94720

    E-Print Network [OSTI]

    Yaghi, Omar M.

    Conductive Graphene via Reversible Covalent Chemistry", in preparation. #12; September 2011-June 2014 Exploited diazonium chemistry to modify graphene quantum dots (GQDs) with novel in bioimaging was proposed. Developed large-scale production of high-quality graphene via reversible covalent

  11. Bayesian methods for the quantification of uncertainties in syngas chemistry models

    E-Print Network [OSTI]

    Raman, Venkat

    Bayesian methods for the quantification of uncertainties in syngas chemistry models Kalen Braman, Todd Oliver and Venkat Raman, The University of Texas, Austin, Texas, 78712 Syngas chemistry modeling is an integral step toward the development of safe and ef- ficient syngas combustors. Although substantial effort

  12. Energy and environment: A majors-level general chemistry course

    SciTech Connect (OSTI)

    Eisenberg, R.; Farrar, J.M. [Univ. of Rochester, NY (United States)

    1995-12-31T23:59:59.000Z

    A new introductory chemistry course has been designed and implemented, complete with weekly laboratory, based on a theme of {open_quotes}Energy and the Environment{close_quotes}. The course provides a rigorous introduction to chemical concepts, systems, and practices, and prepares students for further study in chemistry and other natural sciences. In formulating the course, we have correlated important contemporary issues on energy production and utilization including environmental impact with traditional topics of introductory chemistry and have developed a syllabus in which the latter follow the former. We have employed questions like {open_quotes}What makes a good fuel?{close_quotes}, {open_quotes}How efficiently can energy be produced?{close_quotes}, {open_quotes}What is the chemical basis of ozone depletion?{close_quotes} and {open_quotes}What chemistry underlies global warming?{close_quotes} to motivate the science taught. After a three year trial period in which the course was offered as pan of the multidisciplinary Rochester Ventures series together with a writing course based on {open_quotes}Reason and Argument{close_quotes} and a history course focusing on the development of scientific thought from the preindustrial age to the rise of environmentalism, we have presented the new curriculum in the regular introductory chemistry course. Results of this curricular experiment in both small and large course formats will be discussed.

  13. Cooperative Research in C1 Chemistry

    SciTech Connect (OSTI)

    Gerald P. Huffman

    2000-10-27T23:59:59.000Z

    C1 chemistry refers to the conversion of simple carbon-containing materials that contain one carbon atom per molecule into valuable products. The feedstocks for C1 chemistry include natural gas, carbon dioxide, carbon monoxide, methanol and synthesis gas (a mixture of carbon monoxide and hydrogen). Synthesis gas, or syngas, is produced primarily by the reaction of natural gas, which is principally methane, with steam. It can also be produced by gasification of coal, petroleum coke, or biomass. The availability of syngas from coal gasification is expected to increase significantly in the future because of increasing development of integrated gasification combined cycle (IGCC) power generation. Because of the abundance of remote natural gas, the advent of IGCC, and environmental advantages, C1 chemistry is expected to become a major area of interest for the transportation fuel and chemical industries in the relatively near future. The CFFLS will therefore perform a valuable national service by providing science and engineering graduates that are trained in this important area. Syngas is the source of most hydrogen. Approximately 10 trillion standard cubic feet (SCF) of hydrogen are manufactured annually in the world. Most of this hydrogen is currently used for the production of ammonia and in a variety of refining and chemical operations. However, utilization of hydrogen in fuel cells is expected to grow significantly in the next century. Syngas is also the feedstock for all methanol and Fischer-Tropsch plants. Currently, world consumption of methanol is over 25 million tons per year. There are many methanol plants in the U.S. and throughout the world. Methanol and oxygenated transportation fuel products play a significant role in the CFFLS C1 program. Currently, the only commercial Fischer-Tropsch plants are overseas, principally in South Africa (SASOL). However, new plants are being built or planned for a number of locations. One possible location for future F-T plant development in the U.S. is in the Alaskan oil fields.

  14. A preliminary assessment of beryllium dust oxidation during a wet bypass accident in a fusion reactor

    SciTech Connect (OSTI)

    Brad J. Merrill; Richard L. Moore; J. Phillip Sharp

    2008-09-01T23:59:59.000Z

    A beryllium dust oxidation model has been developed at the Idaho National Laboratory (INL) by the Fusion Safety Program (FSP) for the MELCOR safety computer code. The purpose of this model is to investigate hydrogen production from beryllium dust layers on hot surfaces inside a fusion reactor vacuum vessel (VV) during in-vessel loss-of-cooling accidents (LOCAs). This beryllium dust oxidation model accounts for the diffusion of steam into a beryllium dust layer, the oxidation of the dust particles inside this layer based on the beryllium-steam oxidation equations developed at the INL, and the effective thermal conductivity of this beryllium dust layer. This paper details this oxidation model and presents the results of the application of this model to a wet bypass accident scenario in the ITER device.

  15. 1997 Atmospheric Chemistry Colloquium for Emerging Senior Scientists

    SciTech Connect (OSTI)

    Paul H. Wine

    1998-11-23T23:59:59.000Z

    DOE's Atmospheric Chemistry Program is providing partial funding for the Atmospheric Chemistry Colloquium for Emerging Senior Scientists (ACCESS) and FY 1997 Gordon Research Conference in Atmospheric Chemistry

  16. analytical chemistry organic: Topics by E-print Network

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

    of Electronic Structure and Laser, Foundation for Research and Technology 25 SYLLABUS for CHEMISTRY 2310 ORGANIC CHEMISTRY 1 Chemistry Websites Summary: Discussion...

  17. applied chemistry organic: Topics by E-print Network

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

    of Electronic Structure and Laser, Foundation for Research and Technology 18 SYLLABUS for CHEMISTRY 2310 ORGANIC CHEMISTRY 1 Chemistry Websites Summary: Discussion...

  18. Chemistry, Life, and Earth Sciences

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z CPlasma of theChemistry OxideChemistry Soft

  19. HARNESSING THE CHEMISTRY OF CO{sub 2}

    SciTech Connect (OSTI)

    Louie, Janis

    2012-11-30T23:59:59.000Z

    Our research presents several strategies for addressing the challenges of activating CO2. In addition, our cycloaddition chemistry addresses several fundamental issues pertaining to catalysis as it applies to energy conservation. Topics addressed include: DEVELOPMENT OF A CYCLOADDITION CATALYST; INCREASING THE UTILITY OF THE NI CYCLOADDITION CATALYST; UNDERSTANDING THE MECHANISM OF NI-CATALYZED CYCLOADDITION; and METAL-FREE CO{sub 2} ACTIVATION.

  20. A career in chemistry provides ample opportunities for you to

    E-Print Network [OSTI]

    modern teaching and research facility. Recently renovated McKinley Hall houses state-of-the- art and biosensors, ceramic materials, alternative energy sources, pollution control devices, clean industrial and develop new energy sources for the future. Wichita State's BA degree in chemistry prepares you for a wide

  1. Specifying linepipe suitable for safe operation in sour, wet service

    SciTech Connect (OSTI)

    Moore, E.M.; Hansen, D.A.

    1982-06-01T23:59:59.000Z

    This paper describes the specifications recommended by the authors for buying linepipe in grades up to X-70 for wet, sour service. The linepipe is tested to verify that it is resistant to hydrogen-induced cracking (HIC). In addition, fracture control requirements are imposed so that if a failure does occur for any reason, the crack is guaranteed to self arrest, thus minimizing the consequences of the failure. Pipe meeting the specifications described in this paper is readily available from numerous European and Japanese mills.

  2. Bianchi Type-I Universe with Wet Dark Fluid

    E-Print Network [OSTI]

    T. Singh; R. Chaubey

    2010-07-08T23:59:59.000Z

    The Bianchi type-I universe filled with dark energy from a wet dark fluid has been considered. A new equation of state for the dark energy component of the universe has been used. It is modeled on the equation of state $p=\\gamma (\\rho -\\rho_\\star)$ which can describe a liquid, for example water. The exact solutions to the corresponding field equations are obtained in quadrature form. The solution for constant deceleration parameter have been studied in detail for power-law and exponential forms both. The cases $\\gamma =1$ and $\\gamma =0$ have been also analysed.

  3. Bianchi Type-I Universe with Wet Dark Fluid

    E-Print Network [OSTI]

    Singh, T

    2010-01-01T23:59:59.000Z

    The Bianchi type-I universe filled with dark energy from a wet dark fluid has been considered. A new equation of state for the dark energy component of the universe has been used. It is modeled on the equation of state $p=\\gamma (\\rho -\\rho_\\star)$ which can describe a liquid, for example water. The exact solutions to the corresponding field equations are obtained in quadrature form. The solution for constant deceleration parameter have been studied in detail for power-law and exponential forms both. The cases $\\gamma =1$ and $\\gamma =0$ have been also analysed.

  4. Montana Natural Gas, Wet After Lease Separation Proved Reserves (Billion

    Gasoline and Diesel Fuel Update (EIA)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade1 Source: Office of FossilFoot) Year JanCubic Feet) Gas, Wet

  5. Virginia Natural Gas, Wet After Lease Separation Proved Reserves (Billion

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470 4,364,790 4,363,909 4,363,143 4,363,967 4,363,549 1973-2015 Alaska 14,197 14,197Cubic Feet) Gas, Wet After Lease

  6. Virginia Nonassociated Natural Gas, Wet After Lease Separation, Proved

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470 4,364,790 4,363,909 4,363,143 4,363,967 4,363,549 1973-2015 Alaska 14,197 14,197Cubic Feet) Gas, Wet After

  7. CHEMISTRY 330 QUANTITATIVE ANALYSIS

    E-Print Network [OSTI]

    Nickrent, Daniel L.

    and evaluation of error, basic chemical equilibria, acid-base equilibria, solubility product constant equilibria of spectrophotometric analysis, atomic absorption spectroscopy, methods of separation, gas and liquid chromatography to develop and apply topics discussed in lecture; short quizzes may be used to assess individual learning

  8. Thermal chemistry and photochemistry of hexafluoroacetone on...

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

    chemistry and photochemistry of hexafluoroacetone on rutile TiO2(110) . Thermal chemistry and photochemistry of hexafluoroacetone on rutile TiO2(110) . Abstract: The ultraviolet...

  9. Capturing Chemistry in XML/CML

    E-Print Network [OSTI]

    Townsend, Joseph A; Adams, Sam; Goodman, Jonathan M; Murray-Rust, Peter; Waudby, Chris A

    Chemical Markup Language (CML) is an XML-conformant Schema that describes molecules, spectra, reactions, and computational chemistry. It is capable of capturing the chemistry in a variety of current publications and is becoming adopted by many...

  10. Experimental evaluation of dry/wet air-cooled heat exchangers. Progress report

    SciTech Connect (OSTI)

    Hauser, S.G.; Gruel, R.L.; Huenefeld, J.C.; Eschbach, E.J.; Johnson, B.M.; Kreid, D.K.

    1982-08-01T23:59:59.000Z

    The ultimate goal of this project was to contribute to the development of improved cooling facilities for power plants. Specifically, the objective during FY-81 was to experimentally determine the thermal performance and operating characteristics of an air-cooled heat exchanger surface manufactured by the Unifin Company. The performance of the spiral-wound finned tube surface (Unifin) was compared with two inherently different platefin surfaces (one developed by the Trane Co. and the other developed by the HOETERV Institute) which were previously tested as a part of the same continuing program. Under dry operation the heat transfer per unit frontal area per unit inlet temperature difference (ITD) of the Unifin surface was 10% to 20% below that of the other two surfaces at low fan power levels. At high fan power levels, the performances of the Unifin and Trane surfaces were essentially the same, and 25% higher than the HOETERV surface. The design of the Unifin surface caused a significantly larger air-side pressure drop through the heat exchanger both in dry and deluge operation. Generally higher overall heat transfer coefficients were calculated for the Unifin surface under deluged operation. They ranged from 2.0 to 3.5 Btu/hr-ft/sup 2/-/sup 0/F as compared to less than 2.0 Btu hr-ft/sup 2/-/sup 0/F for the Trane and HOETERV surfaces under similar conditions. The heat transfer enhancement due to the evaporative cooling effect was also measureably higher with the Unifin surface as compared to the Trane surface. This can be primarily attributed to the better wetting characteristics of the Unifin surface. If the thermal performance of the surfaces are compared at equal face velocities, the Unifin surface is as much as 35% better. This method of comparison accounts for the wetting characteristics while neglecting the effect of pressure drop. Alternatively the surfaces when compared at equal pressure drop essentially the same thermal performance.

  11. User Manual Frick Chemistry Laboratory

    E-Print Network [OSTI]

    Torquato, Salvatore

    the atrium connects the laboratory wing with the administrative offices. This provides a light-filled space to make the new Frick Chemistry Laboratory (and the surrounding natural sciences neighborhood) one technologies that reduce energy demand and con- serve water. The design and construction teams have implemented

  12. Theoretical Chemistry Theory, Computation, and

    E-Print Network [OSTI]

    Gherman, Benjamin F.

    1 23 Theoretical Chemistry Accounts Theory, Computation, and Modeling ISSN 1432-881X Volume 128). In order to explore the origin of this preference, density functional theory (DFT) calculations have been-terminus of nascent eubacterial proteins during protein synthesis [1­4]. As PDF is essential for bacterial survival

  13. Interfacial Chemistry and Engineering Annual Report 2000

    SciTech Connect (OSTI)

    Grate, Jay W.

    2001-08-01T23:59:59.000Z

    This annual report describes the research and staff accomplishments in 2000 for the EMSL Interfacial Chemistry and Engineering Directorate.

  14. Eleventh international symposium on radiopharmaceutical chemistry

    SciTech Connect (OSTI)

    NONE

    1995-12-31T23:59:59.000Z

    This document contains abstracts of papers which were presented at the Eleventh International Symposium on Radiopharmaceutical Chemistry. Sessions included: radiopharmaceuticals for the dopaminergic system, strategies for the production and use of labelled reactive small molecules, radiopharmaceuticals for measuring metabolism, radiopharmaceuticals for the serotonin and sigma receptor systems, labelled probes for molecular biology applications, radiopharmaceuticals for receptor systems, radiopharmaceuticals utilizing coordination chemistry, radiolabelled antibodies, radiolabelling methods for small molecules, analytical techniques in radiopharmaceutical chemistry, and analytical techniques in radiopharmaceutical chemistry.

  15. Technetium Chemistry Science Challenges in Environmental Science

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

    Technetium Chemistry Science Challenges in Environmental Science and Waste Processing Workshop Sponsored by Environmental Molecular Science Laboratory Richland, Washington July...

  16. Chemistry / Biochemistry B.S. Curriculum

    E-Print Network [OSTI]

    Long, Nicholas

    Chemistry / Biochemistry B.S. Curriculum Freshman Chemistry CHE 133/133L, 134/134L; ENG 131, 132, BIO elective Sophomore Chemistry CHE 231/231L, 241/241L, 331/331L, 332/332L; MTH 233, 234; PHY 241 elective Junior Chemistry CHE 337/337L, 338/338L, 452/452L; CSC 101 or 201, ENG 273, Eng. Lit; Core

  17. Chemistry in Bioinformatics

    E-Print Network [OSTI]

    Murray-Rust, Peter; Mitchell, John B O; Rzepa, Henry S

    2005-05-19T23:59:59.000Z

    , greater availability, and development of the Biochemical Semantic Web where robots mine text and data as a basis for knowledge?driven science. We argue that funders, institutions, authors, editors, publishers and readers will all benefit... harvesting. All compound/property data is available for datamining and computational re?use (e.g. for further in silico prediction. Realising the vision Data repositing and Maintenance The current dissemination of data through publishers...

  18. Updated March 2011 Ph.D. Chemistry; Option in Chemistry Education

    E-Print Network [OSTI]

    New Hampshire, University of

    Updated March 2011 Ph.D. Chemistry; Option in Chemistry Education University of New Hampshire below), or candidate can obtain MS at UNH on the way to the PhD with Option in Chemistry Education Cumulative exams are split between education and chemistry cores Professional presentation allowed in place

  19. Roadmap: Chemistry Chemistry -Bachelor of Science [AS-BS-CHEM-CHEM

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Chemistry ­ Chemistry - Bachelor of Science [AS-BS-CHEM-CHEM] College of Arts and Sciences Department of Chemistry and Biochemistry Catalog Year: 2013-2014 Page 1 of 2 | Last Updated: 30-Apr-13/LNHD for certification by the American Chemical Society CHEM 10060 General Chemistry I (4) and CHEM 10062 General

  20. BA in CHEMISTRY (692827) MAP Sheet Department of Chemistry and Biochemistry

    E-Print Network [OSTI]

    Olsen Jr., Dan R.

    BA in CHEMISTRY (692827) MAP Sheet Department of Chemistry and Biochemistry For students entering in major courses. --The Chemistry and Biochemistry Department requires the final 10 hours of required chemistry credit to be taken in residence at BYU for this degree program. These hours may also go toward BYU

  1. Minor in Chemistry Handout1.doc (04/30/08) Department of Chemistry

    E-Print Network [OSTI]

    Reed, Christopher A.

    Minor in Chemistry Handout1.doc (04/30/08) Department of Chemistry Undergraduate Student Academic.fleming@ucr.edu Minor in Chemistry Procedure: It is assumed that you have completed the requirements listed in section to Declare a Minor to Chemistry. Include the following: full name, student identification number, and email

  2. CHEMISTRY AND TECHNOLOGY 2011 Academic regulations for the Bachelor's degree in Chemistry and Technology

    E-Print Network [OSTI]

    CHEMISTRY AND TECHNOLOGY 2011 Academic regulations for the Bachelor's degree in Chemistry Bachelor's degree programme provides graduates with the title Bachelor of Science (BSc) in Chemistry and Technology. Academic line and main subject areas of the degree The Bachelor's degree in Chemistry

  3. Roadmap: Chemistry Chemistry -Bachelor of Science [AS-BS-CHEM-CHEM

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Chemistry ­ Chemistry - Bachelor of Science [AS-BS-CHEM-CHEM] College of Arts and Sciences Department of Chemistry and Biochemistry Catalog Year: 2012­2013 Page 1 of 2 | Last Updated: 17-May-12/LNHD for certification by the American Chemical Society CHEM 10060 General Chemistry I (4) and CHEM 10062 General

  4. Chemistry -Bachelor of Science (SCH5UG) Total Credits Required: 128 Chemistry/Environmental -ACS Certified

    E-Print Network [OSTI]

    Chemistry - Bachelor of Science (SCH5UG) Total Credits Required: 128 Chemistry/Environmental - ACS credits Course Credits Course Credits CH1150 University Chemistry I AND 3 BL1040 Principles of Biology 4 CH1151 University Chemistry Lab 1 AND 1 BL3310 Environmental Microbiology 3 CH1153 University

  5. The School of Chemistry Handbook for Postgraduate

    E-Print Network [OSTI]

    Rzepa, Henry S.

    The School of Chemistry Handbook for Postgraduate Research Students 2013/14 School of Chemistry FACULTY OF MATHS AND PHYSICAL SCIENCES #12;2 Welcome The School of Chemistry welcomes new postgraduate that is relevant for your time spent in the School, including information about facilities to support your research

  6. Chemistry Department Assessment Table of Contents

    E-Print Network [OSTI]

    Bogaerts, Steven

    0 Chemistry Department Assessment May, 2006 Table of Contents Page Executive Summary 1 Prelude 1 Mission Statement and Learning Goals 1 Facilities 2 Staffing 3 Students: Chemistry Majors and Student Taking Service Courses Table: 1997-2005 graduates profile Table: GRE Score for Chemistry Majors, 1993

  7. 1988 Wet deposition temporal and spatial patterns in North America

    SciTech Connect (OSTI)

    Simpson, J.C.; Olsen, A.R.; Bittner, E.A.

    1992-03-01T23:59:59.000Z

    The focus of this report is on North American wet deposition temporal patterns from 1979 to 1988 and spatial patterns for 1988. It is the third in a series of reports that investigate the patterns of annual precipitation-weighted average concentration and annual deposition for nine ion species: hydrogen, sulfate, nitrate, ammonium, calcium, chloride, sodium, potassium, and magnesium. Mosaic maps, based on surface estimation using kriging, display concentration and deposition spatial patterns of pH, hydrogen, sulfate, nitrate, ammonium, and calcium ion species for 1988 annual, winter, and summer periods. Temporal pattern analyses use a subset of 35 sites over a 10-year (1979--1988) period and an expanded subset of 137 sites, with greater spatial coverage, over a 7-year (1982--1988) period. The 10-year period represents the longest period with wet deposition monitoring data available that has a sufficient number of sites with data of known quality to allow a descriptive summary of annual temporal patterns. Sen's median trend estimate and Kendall's seasonal tau (KST) test are calculated for each ion species concentration and deposition at each site in both subsets.

  8. 1988 Wet deposition temporal and spatial patterns in North America

    SciTech Connect (OSTI)

    Simpson, J.C.; Olsen, A.R.; Bittner, E.A.

    1992-03-01T23:59:59.000Z

    The focus of this report is on North American wet deposition temporal patterns from 1979 to 1988 and spatial patterns for 1988. It is the third in a series of reports that investigate the patterns of annual precipitation-weighted average concentration and annual deposition for nine ion species: hydrogen, sulfate, nitrate, ammonium, calcium, chloride, sodium, potassium, and magnesium. Mosaic maps, based on surface estimation using kriging, display concentration and deposition spatial patterns of pH, hydrogen, sulfate, nitrate, ammonium, and calcium ion species for 1988 annual, winter, and summer periods. Temporal pattern analyses use a subset of 35 sites over a 10-year (1979--1988) period and an expanded subset of 137 sites, with greater spatial coverage, over a 7-year (1982--1988) period. The 10-year period represents the longest period with wet deposition monitoring data available that has a sufficient number of sites with data of known quality to allow a descriptive summary of annual temporal patterns. Sen`s median trend estimate and Kendall`s seasonal tau (KST) test are calculated for each ion species concentration and deposition at each site in both subsets.

  9. 2010 Environmental Bioinorganic Chemistry

    SciTech Connect (OSTI)

    Rachael Austin

    2010-06-18T23:59:59.000Z

    This interdisciplinary meeting will gather together scientists - structural biologists, chemists, geneticists, chemical and biological oceanographers, geochemists, and other specialist - who study the flows of essential and toxic elements through the environment and living systems, on timescales ranging from femptoseconds to eons. Of particular interest are the molecular mechanisms that govern element acquisition and use in organisms, and the tools and techniques used to study these phenomena. The aim of this community is to use these molecular-scale insights to understand the interconnected biotic and abiotic processes that shape the macroscopic environment and its development and change over a range of time scales.

  10. An implicit wetting and drying approach for non-hydrostatic flows in high aspect ratio domains

    E-Print Network [OSTI]

    Candy, Adam S

    2013-01-01T23:59:59.000Z

    A wetting and drying approach for free surface flows governed by the three-dimensional, non-hydrostatic Navier-Stokes equations in high aspect ratio domains is developed. This has application in the modelling of inundation processes in geophysical domains, where dynamics takes place over a large horizontal extent relative to vertical resolution, such as in the evolution of a tsunami, or an urban fluvial flooding scenario. The approach is novel in that it solves for three dimensional dynamics in these very high aspect ratio domains, to include non-hydrostatic effects and accurately model dispersive processes. These become important in shallow regions with steep gradients, a particularly acute problem where man-made structures exist such as buildings or flood defences in an urban environment. It is implicit in time to allow efficient time integration over a range of mesh element sizes. Specific regularisation methods are introduced to improve conditioning of the full three-dimensional pressure Poisson problem i...

  11. New Technique Gives a Deeper Look into the Chemistry of Interfaces

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

    New Technique Gives a Deeper Look into the Chemistry of Interfaces Print A new technique developed at the ALS offers sub-nanometer depth resolution of every chemical element to be...

  12. PILOT TESTING OF MERCURY OXIDATION CATALYSTS FOR UPSTREAM OF WET FGD SYSTEMS

    SciTech Connect (OSTI)

    Gary M. Blythe

    2003-10-01T23:59:59.000Z

    This document summarizes progress on Cooperative Agreement DE-FC26-01NT41185, ''Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems,'' during the time-period July 1, 2003 through September 30, 2003. The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. The project is being funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-01NT41185. EPRI, Great River Energy (GRE), and City Public Service (CPS) of San Antonio are project cofunders. URS Group is the prime contractor. The mercury control process under development uses catalyst materials applied to honeycomb substrates to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone flue gas desulfurization (FGD) systems. Oxidized mercury is removed in the wet FGD absorbers and co-precipitates with the byproducts from the FGD system. The current project is testing previously identified, effective catalyst materials at a larger, pilot scale and in a commercial form, to provide engineering data for future full-scale designs. The pilot-scale tests will continue for approximately 14 months at each of two sites to provide longer-term catalyst life data. This is the eighth full reporting period for the subject Cooperative Agreement. During this period, project efforts included continued operation of the first pilot unit at the GRE Coal Creek site with all four catalysts in service and sonic horns installed for on-line catalyst cleaning. During the quarter, a catalyst activity measurement trip and mercury SCEM relative accuracy tests were completed, and catalyst pressure drop was closely monitored with the sonic horns in operation. CPS completed the installation of the second mercury oxidation catalyst pilot unit at their Spruce Plant during the quarter, and the four catalysts to be tested in that unit were ordered. The pilot unit was started up with two of the four catalysts in service late in August, and initial catalyst activity results were measured in late September. The other two catalysts will not become available for testing until sometime in October. This technical progress report details these efforts at both sites.

  13. PILOT TESTING OF MERCURY OXIDATION CATALYSTS FOR UPSTREAM OF WET FGD SYSTEMS

    SciTech Connect (OSTI)

    Gary M. Blythe

    2002-04-26T23:59:59.000Z

    This document summarizes progress on Cooperative Agreement DE-FC26-01NT41185, Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems, during the time period January 1, 2002 through March 31, 2002. The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. The project is being funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-01NT41185. EPRI, Great River Energy (GRE) and City Public Service (CPS) of San Antonio are project co-funders. URS Group is the prime contractor. The mercury catalytic oxidation process under development uses catalyst materials applied to honeycomb substrates to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone flue gas desulfurization (FGD) systems. Oxidized mercury is removed in the wet FGD absorbers and co-precipitates in a stable form with the byproducts from the FGD system. The co-precipitated mercury does not appear to adversely affect the disposal or reuse properties of the FGD byproduct. The current project will test previously identified, effective catalyst materials at a larger, pilot scale and in a commercial form, so as to provide engineering data for future full-scale designs. The pilot-scale tests will continue for up to 14 months at each of two sites to provide longer-term catalyst life data. This is the second full reporting period for the subject Cooperative Agreement. During this period, most of the project efforts were related to pilot unit design and conducting laboratory runs to help select candidate catalysts. This technical progress report provides an update on these two efforts. A Test Plan for the upcoming pilot-scale evaluations was also prepared and submitted to NETL for review and comment. Since this document was already submitted under separate cover, this information is not repeated here.

  14. Analytical Chemistry Laboratory, progress report for FY 1993

    SciTech Connect (OSTI)

    Not Available

    1993-12-01T23:59:59.000Z

    The purpose of this report is to summarize the activities of the Analytical Chemistry Laboratory (ACL) at Argonne National Laboratory (ANL) for Fiscal Year (FY) 1993 (October 1992 through September 1993). This annual report is the tenth for the ACL and describes continuing effort on projects, work on new projects, and contributions of the ACL staff to various programs at ANL. The Analytical Chemistry Laboratory is a full-cost-recovery service center, with the primary mission of providing a broad range of analytical chemistry support services to the scientific and engineering programs at ANL. The ACL also has research programs in analytical chemistry, conducts instrumental and methods development, and provides analytical services for governmental, educational, and industrial organizations. The ACL handles a wide range of analytical problems. Some routine or standard analyses are done, but it is common for the Argonne programs to generate unique problems that require development or modification of methods and adaption of techniques to obtain useful analytical data. The ACL is administratively within the Chemical Technology Division (CMT), its principal ANL client, but provides technical support for many of the technical divisions and programs at ANL. The ACL has four technical groups--Chemical Analysis, Instrumental Analysis, Organic Analysis, and Environmental Analysis--which together include about 45 technical staff members. Talents and interests of staff members cross the group lines, as do many projects within the ACL.

  15. Experimental program for the development of peat gasification. Final report for Project No. 65003, February 10, 1976-January 3, 1983. [Contains list of 15 interim reports and brief summaries of each

    SciTech Connect (OSTI)

    Not Available

    1983-07-01T23:59:59.000Z

    The results of the program have demonstrated that, on the basis of chemistry and kinetics, peat is an excellent feedstock for the production of SNG and other gaseous and liquid fuels. Peat gasifies at a much faster rate than does lignite or other coals, and high carbon conversions can be achieved with peat at relatively low severity conditions. In hydrogasification, the product mix (gases and liquids) can be varied over a much greater range than that of lignite or other coals, to satisfy seasonally changing consumer demands. Over 200 tests were conducted in laboratory- and PDU-scale equipment with different peats to determine the effects of temperature, pressure, feedstock, feed gas composition, residence time, and other operating parameters on the gasification of peat. A mathematical model was developed that closely describes the effects of operating conditions on peat gasification. These results formed the data base for the PEATGAS process development at the pilot-plant scale. Tests with peats from different geographic locations showed the effect of feedstock source on gasification. The effect of peat dewatering methodologies (including harvesting techniques and mechanical and thermal dewatering methods) on gasification was also studied. Wet carbonization tests were conducted. Wet carbonization is a thermochemical beneficiation process that improves the heating value and dewaterability of peat. The laboratory test program was the first systemic study of the effects of wet carbonization on the carbon and oxygen conversions and heating value enhancements of peat to appear in the open literature. The PDU-test program included the design, construction, and operation of an integrated computer-controlled wet carbonization unit.

  16. Specifying linepipe suitable for safe operation in sour wet service

    SciTech Connect (OSTI)

    Moore, E.M. Jr.; Hansen, D.A.

    1981-01-01T23:59:59.000Z

    The specifications recommended for buying linepipe for wet, sour service are described. A two-fold approach is used. First the linepipe is tested to verify that it is resistant to hydrogen induced cracking (HIC). Second, fracture mechanics requirements are imposed so that if hydrogen induced cracking does occur due to steel-making or operation upsets, a line rupture is guaranteed to self-arrest, thus minimizing the consequences of the failure. Correlations of HIC susceptibility test results with actual service performance are presented. The HIC test acceptance criteria used by the authors are discussed. The fracture mechanics considerations include drop weight tear testing to establish ductile failures and Charpy impact testing to assure self-arrest of an unstable crack, as well as maximum crack initiation energy. The paper concludes with a brief discussion of the commercial availability of linepipe produced to the specifications discussed below.

  17. PILOT TESTING OF MERCURY OXIDATION CATALYSTS FOR UPSTREAM OF WET FGD SYSTEMS

    SciTech Connect (OSTI)

    Gary M. Blythe

    2002-02-22T23:59:59.000Z

    The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. The project is being funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-01NT41185. EPRI, Great River Energy (GRE), and City Public Service (CPS) of San Antonio are project co-funders. URS Group is the prime contractor. The mercury catalytic oxidation process under development uses catalyst materials applied to honeycomb substrates to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone flue gas desulfurization (FGD) systems. Oxidized mercury is removed in the wet FGD absorbers and co-precipitates in a stable form with the byproducts from the FGD system. The co-precipitated mercury does not appear to adversely affect the disposal or reuse properties of the FGD byproduct. The current project will test previously identified, effective catalyst materials at a larger, pilot scale and in a commercial form, so as to provide engineering data for future full-scale designs. The pilot-scale tests will continue for up to 14 months at each of two sites to provide longer-term catalyst life data. This is the first full reporting period for the subject Cooperative Agreement. During this period, most of the project efforts were related to project initiation and planning. There is no significant technical progress to report for the current period.

  18. Vol. 82, No. 4, 2005 431 Phosphorus Concentrations and Flow in Maize Wet-Milling Streams

    E-Print Network [OSTI]

    gluten meal (CGM) and corn gluten feed (CGF) is important to the maize wet-milling industry. High [CGM]). CGF is produced from mixing heavy steep- water with maize fiber (Fig. 1); it has high fiber and CGM is important to the economic viability of the wet-milling industry because it partially offsets

  19. Quantifying wet scavenging processes in aircraft observations of nitric acid and cloud condensation nuclei

    E-Print Network [OSTI]

    Palmer, Paul

    Quantifying wet scavenging processes in aircraft observations of nitric acid and cloud condensation indicator for quantifying wet scavenging. Specifically, nitric acid (HNO3), produced as a by-product of combustion, is highly soluble and removed efficiently from clouds by rain. Regional carbon monoxide (CO

  20. Experimental investigation of burning velocities of ultra-wet methane-air-steam mixtures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , steam, burning velocity, chemiluminescence, OH Introduction In ultra-wet gas turbines, the heatExperimental investigation of burning velocities of ultra-wet methane-air-steam mixtures Eric Abstract Global burning velocities of methane-air-steam mixtures are measured on prismatic laminar Bunsen

  1. Pressure and partial wetting effects on superhydrophobic friction reduction in microchannel flow

    E-Print Network [OSTI]

    Hidrovo, Carlos H.

    Pressure and partial wetting effects on superhydrophobic friction reduction in microchannel flow://pof.aip.org/about/rights_and_permissions #12;PHYSICS OF FLUIDS 24, 112003 (2012) Pressure and partial wetting effects on superhydrophobic- ing that can lead to a superhydrophobic Cassie-Baxter state. The Cassie-Baxter state is characterized

  2. Steps toward fault-tolerant quantum chemistry.

    SciTech Connect (OSTI)

    Taube, Andrew Garvin

    2010-05-01T23:59:59.000Z

    Developing quantum chemistry programs on the coming generation of exascale computers will be a difficult task. The programs will need to be fault-tolerant and minimize the use of global operations. This work explores the use a task-based model that uses a data-centric approach to allocate work to different processes as it applies to quantum chemistry. After introducing the key problems that appear when trying to parallelize a complicated quantum chemistry method such as coupled-cluster theory, we discuss the implications of that model as it pertains to the computational kernel of a coupled-cluster program - matrix multiplication. Also, we discuss the extensions that would required to build a full coupled-cluster program using the task-based model. Current programming models for high-performance computing are fault-intolerant and use global operations. Those properties are unsustainable as computers scale to millions of CPUs; instead one must recognize that these systems will be hierarchical in structure, prone to constant faults, and global operations will be infeasible. The FAST-OS HARE project is introducing a scale-free computing model to address these issues. This model is hierarchical and fault-tolerant by design, allows for the clean overlap of computation and communication, reducing the network load, does not require checkpointing, and avoids the complexity of many HPC runtimes. Development of an algorithm within this model requires a change in focus from imperative programming to a data-centric approach. Quantum chemistry (QC) algorithms, in particular electronic structure methods, are an ideal test bed for this computing model. These methods describe the distribution of electrons in a molecule, which determine the properties of the molecule. The computational cost of these methods is high, scaling quartically or higher in the size of the molecule, which is why QC applications are major users of HPC resources. The complexity of these algorithms means that MPI alone is insufficient to achieve parallel scaling; QC developers have been forced to use alternative approaches to achieve scalability and would be receptive to radical shifts in the programming paradigm. Initial work in adapting the simplest QC method, Hartree-Fock, to this the new programming model indicates that the approach is beneficial for QC applications. However, the advantages to being able to scale to exascale computers are greatest for the computationally most expensive algorithms; within QC these are the high-accuracy coupled-cluster (CC) methods. Parallel coupledcluster programs are available, however they are based on the conventional MPI paradigm. Much of the effort is spent handling the complicated data dependencies between the various processors, especially as the size of the problem becomes large. The current paradigm will not survive the move to exascale computers. Here we discuss the initial steps toward designing and implementing a CC method within this model. First, we introduce the general concepts behind a CC method, focusing on the aspects that make these methods difficult to parallelize with conventional techniques. Then we outline what is the computational core of the CC method - a matrix multiply - within the task-based approach that the FAST-OS project is designed to take advantage of. Finally we outline the general setup to implement the simplest CC method in this model, linearized CC doubles (LinCC).

  3. 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. [Lawrence Berkeley Lab., CA (United States)

    1993-11-01T23:59:59.000Z

    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.

  4. Moving zone Marangoni drying of wet objects using naturally evaporated solvent vapor

    DOE Patents [OSTI]

    Britten, Jerald A. (Oakley, CA)

    1997-01-01T23:59:59.000Z

    A surface tension gradient driven flow (a Marangoni flow) is used to remove the thin film of water remaining on the surface of an object following rinsing. The process passively introduces by natural evaporation and diffusion of minute amounts of alcohol (or other suitable material) vapor in the immediate vicinity of a continuously refreshed meniscus of deionized water or another aqueous-based, nonsurfactant rinsing agent. Used in conjunction with cleaning, developing or wet etching application, rinsing coupled with Marangoni drying provides a single-step process for 1) cleaning, developing or etching, 2) rinsing, and 3) drying objects such as flat substrates or coatings on flat substrates without necessarily using heat, forced air flow, contact wiping, centrifugation or large amounts of flammable solvents. This process is useful in one-step cleaning and drying of large flat optical substrates, one-step developing/rinsing and drying or etching/rinsing/drying of large flat patterned substrates and flat panel displays during lithographic processing, and room-temperature rinsing/drying of other large parts, sheets or continuous rolls of material.

  5. Moving zone Marangoni drying of wet objects using naturally evaporated solvent vapor

    DOE Patents [OSTI]

    Britten, J.A.

    1997-08-26T23:59:59.000Z

    A surface tension gradient driven flow (a Marangoni flow) is used to remove the thin film of water remaining on the surface of an object following rinsing. The process passively introduces by natural evaporation and diffusion of minute amounts of alcohol (or other suitable material) vapor in the immediate vicinity of a continuously refreshed meniscus of deionized water or another aqueous-based, nonsurfactant rinsing agent. Used in conjunction with cleaning, developing or wet etching application, rinsing coupled with Marangoni drying provides a single-step process for (1) cleaning, developing or etching, (2) rinsing, and (3) drying objects such as flat substrates or coatings on flat substrates without necessarily using heat, forced air flow, contact wiping, centrifugation or large amounts of flammable solvents. This process is useful in one-step cleaning and drying of large flat optical substrates, one-step developing/rinsing and drying or etching/rinsing/drying of large flat patterned substrates and flat panel displays during lithographic processing, and room-temperature rinsing/drying of other large parts, sheets or continuous rolls of material. 5 figs.

  6. Improved Wetting of Mixed Ionic/Electronic Conductors Used in Electrochemical Devices with Ternary Reactive Air Braze Filler Metals

    SciTech Connect (OSTI)

    Hardy, John S.; Kim, Jin Yong Y.; Thomsen, Ed C.; Weil, K. Scott

    2007-01-19T23:59:59.000Z

    This paper reports on the wetting behavior, reactivity, and long-term electrical conductance of a series of ternary filler metals being considered for brazing lanthanum strontium cobalt ferrite (LSCF) based oxygen separation membranes. Mixed ionic/electronic conducting perovskite oxides such as LSCF and various doped barium cerates are currently being considered for use in high-temperature electrochemical devices such as oxygen and hydrogen concentrators and solid oxide fuel cells. However to take full advantage of the unique properties of these materials, reliable joining techniques need to be developed. Furthermore, if the proposed joining technique were to yield a hermetic ceramic-to-metal junction that was also electrically conductive, it would additionally benefit the device by allowing current to be drawn from or carried to the electrochemically active mixed conducting oxide component without requiring an separate current collector. A newly developed brazing technique known as air brazing is one such method of joining. In its present form, air brazing uses a silver-copper oxide based filler metal that can be melted directly in air to form a compliant joint that is electrically conductive. Recently, it has been shown that the addition of titania can enhance the wetting behavior of Ag-CuO filler metals on alumina. Here the effect of this wetting agent on the surface wettability, long-term electrical resistance at 750°C, and reactivity with La0.6Sr0.4Co0.2Fe0.8O3-? (LSCF-6428 or LSCF) substrates is discussed.

  7. Chemistry Add-In for Word

    E-Print Network [OSTI]

    Townsend, Joseph A

    2011-07-05T23:59:59.000Z

    The Add-In (.NET) links a semantic chemistry engine (.NUMBO) through a command interface (CID) to a chemistry zone. Chemistry zones are textual or graphic renderings within a Word document (DOCX). All content and relationships are bound to CML... OOXML + CML •Data publication difficult and unsupported •Insufficient data to fully support research •Data preparation integrated into user workflow •Open Standards promote Open Semantic Science Domain aware software and semantic data allows...

  8. Chemistry

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamosCharacterization of SelectiveBrownFirstU.S. DOEChemistry

  9. Direct Use of Wet Ethanol in a Homogeneous Charge Compression Ignition (HCCI) Engine: Experimental and Numerical Results

    E-Print Network [OSTI]

    Mack, John Hunter; Flowers, Daniel L; Aceves, Salvador M; Dibble, Robert W

    2007-01-01T23:59:59.000Z

    for 4 different water-in-ethanol fuel blends at a variety ofmotivation for using wet ethanol fuel is that significantengine running on wet ethanol. Fuel mixtures studied range

  10. CHEMISTRY AND CHEMICAL ENGINEERING DIVISION

    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 DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy FutureDepartmentCAIRSPlanning TimelineChemistry |CHARTERExponent,

  11. Better Enzymes for Biofuels and Green Chemistry

    E-Print Network [OSTI]

    Better Enzymes for Biofuels and Green Chemistry: Solving the Cofactor Imbalance Problem Imbalances for the production of biofuels or other valuable chemicals. Though several research groups have re

  12. 2005 American Conference on Theoretical Chemistry

    SciTech Connect (OSTI)

    Carter, Emily A

    2006-11-19T23:59:59.000Z

    The materials uploaded are meant to serve as final report on the funds provided by DOE-BES to help sponsor the 2005 American Conference on Theoretical Chemistry.

  13. Nanostructure, Chemistry and Crystallography of Iron Nitride...

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

    Nanostructure, Chemistry and Crystallography of Iron Nitride Magnetic Materials by Ultra-High-Resolution Electron Microscopy and Related Methods DOE 2011 Vehicle Technologies...

  14. Chemistry of Organic Electronic Materials 6483-Fall

    E-Print Network [OSTI]

    Sherrill, David

    Chemistry of Organic Electronic Materials 6483- Fall Tuesdays organic materials. The discussion will include aspects of synthesis General introduction to the electronic structure of organic materials with connection

  15. Lithium Insertion Chemistry of Some Iron Vanadates

    E-Print Network [OSTI]

    Patoux, Sebastien; Richardson, Thomas J.

    2008-01-01T23:59:59.000Z

    in A. Nazri, G.Pistoia (Eds. ), Lithium batteries, Science &structure materials in lithium cells, for a lower limitLithium Insertion Chemistry of Some Iron Vanadates Sébastien

  16. Introduction to Chemistry and Material Sciences Applications

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

    Intro Chem and MatSci Apps Introduction to Chemistry and Material Sciences Applications June 26, 2012 L ast edited: 2014-06-02 08:56:54...

  17. Chemistry for Measurement and Detection Science

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

    forensics, and consequence management," Journal of Radioanalytical and Nuclear Chemistry, 1-18 (2012). Magen E. Coleman, Evelyn M. Bond, W. Allen Moody, and Lav Tandon,...

  18. HE CHEMISTRY LIBRARY has existed as long as the University of Texas. Its history closely follows the

    E-Print Network [OSTI]

    follows the development and expansion both of the Chemistry Department and of the General Libraries, from with the University Library. The chemistry professor was responsible for spending a small library budget to purchase was as essential to quality research and teaching as modern laboratory facilities and equipment -- a fact

  19. CHEMISTRY 1 Faculty of Natural Sciences, Department of

    E-Print Network [OSTI]

    CHEMISTRY 1 Faculty of Natural Sciences, Department of --Chemistry This publication refers.imperial.ac.uk/pgprospectus. Chemistry Interests in chemistry at Imperial College cover physical, organic, inorganic, analytical, polymer and biological chemistry and chemical crystallography, as well as intersectional and medical topics

  20. Rev. 3/1/10 NEW.........Minor in Chemistry

    E-Print Network [OSTI]

    Chatterjee, Avik P.

    Rev. 3/1/10 NEW.........Minor in Chemistry The Department of Chemistry offers a minor in chemistry to students who wish to enhance their degrees with a strong concentration in this area. The Chemistry minor and enhances the records of students. The Chemistry minor provides a broad and general exposure

  1. Chemistry and Processing of Nanostructured Materials

    SciTech Connect (OSTI)

    Fox, G A; Baumann, T F; Hope-Weeks, L J; Vance, A L

    2002-01-18T23:59:59.000Z

    Nanostructured materials can be formed through the sol-gel polymerization of inorganic or organic monomer systems. For example, a two step polymerization of tetramethoxysilane (TMOS) was developed such that silica aerogels with densities as low as 3 kg/m{sup 3} ({approx} two times the density of air) could be achieved. Organic aerogels based upon resorcinol-formaldehyde and melamine-formaldehyde can also be prepared using the sol-gel process. Materials of this type have received significant attention at LLNL due to their ultrafine cell sizes, continuous porosity, high surface area and low mass density. For both types of aerogels, sol-gel polymerization depends upon the transformation of these monomers into nanometer-sized clusters followed by cross-linking into a 3-dimensional gel network. While sol-gel chemistry provides the opportunity to synthesize new material compositions, it suffers from the inability to separate the process of cluster formation from gelation. This limitation results in structural deficiencies in the gel that impact the physical properties of the aerogel, xerogel or nanocomposite. In order to control the properties of the resultant gel, one should be able to regulate the formation of the clusters and their subsequent cross-linking. Towards this goal, we are utilizing dendrimer chemistry to separate the cluster formation from the gelation so that new nanostructured materials can be produced. Dendrimers are three-dimensional, highly branched macromolecules that are prepared in such a way that their size, shape and surface functionality are readily controlled. The dendrimers will be used as pre-formed clusters of known size that can be cross-linked to form an ordered gel network.

  2. ADVANCED INORGANIC LABORATORY FALL 2008 CHEMISTRY 410 (CRN 11299:), CHEMISTRY 510 (CRN 11315)

    E-Print Network [OSTI]

    Richmond, Geraldine L.

    materials and announcements will be posted on the site. Required Text: "Synthesis and Technique in InorganicADVANCED INORGANIC LABORATORY ­ FALL 2008 CHEMISTRY 410 (CRN 11299:), CHEMISTRY 510 (CRN 11315 to a wide range of conceptual and practical (laboratory) inorganic chemistry. Because of the introductory

  3. Air Pollution Physics and Chemistry EAS 6790 Home Work Assignment Ozone Chemistry 2

    E-Print Network [OSTI]

    Weber, Rodney

    1 Air Pollution Physics and Chemistry EAS 6790 Fall 2010 Home Work Assignment Ozone Chemistry 2 Problem 1: Nighttime loss of NOx in the lower troposphere proceeds by: 1 Air Pollution Physics and 2 only). Daniel Jacob, Atmospheric Chemistry #12;2 Problem 2: 2 2. Consider an air parcel ventilated

  4. Chemistry and Metallurgy Research Facility The Los Alamos National Laboratory (LANL) Chemistry and

    E-Print Network [OSTI]

    CMR Chemistry and Metallurgy Research Facility The Los Alamos National Laboratory (LANL) Chemistry and Metallurgy Research (CMR) building supports research and experimental activities for plutonium and uranium analytical chemistry and metallurgy. In 1952, the first LANL CMR facility was completed. At that time

  5. Wetting and strength issues at Al/alpha-alumina interfaces

    SciTech Connect (OSTI)

    Saiz, Eduardo; Tomsia, Antoni P.; Suganuma, Katsuaki

    2003-04-15T23:59:59.000Z

    The wetting behavior and strength at aluminum/alumina interfaces has been an active subject of research. Al/alumina applications include ceramic-metal composites and several applications for electronic industries. In this paper the interface strength and microstructure of Al/alpha-alumina was investigated. We discovered that in a solid-state joining, the strength of the joint increases with increasing joining temperature. In a liquid-state joining, the strength of the joint gradually decreases due to the formation of unbonded areas. The strength, sigma sub b, is expressed by the following equation as a function of unbonded area, A: sigma sub b = 2.22 A + 143 (70 percent {le} A {le} 100 percent). The highest strength reached 400 MPa when the interface was formed at around the melting temperature of aluminum. An aluminum layer close to the interface became a single crystal when it was bonded to a sapphire. The following crystallographic orientation relationship is established: (1{bar 1}1){sub Al}//(001){sub {alpha}}-Al{sub 2} O{sub 3}, (110){sub Al}//<100>{sub {alpha}}-Al{sub 2}O{sub 3}. Amorphous alumina islands were formed at the interface. In the amorphous alumina, gamma-alumina nanocrystals grew from the sapphire, with the same orientation relationship to sapphire as above.

  6. Contact angles in the pseudopotential lattice Boltzmann modeling of wetting

    E-Print Network [OSTI]

    Q. Li; K. H. Luo; Q. J. Kang; Q. Chen

    2014-10-21T23:59:59.000Z

    In this paper, we aim to investigate the implementation of contact angles in the pseudopotential lattice Boltzmann modeling of wetting at a large density ratio. The pseudopotential lattice Boltzmann model [X. Shan and H. Chen, Phys. Rev. E 49, 2941 (1994)] is a popular mesoscopic model for simulating multiphase flows and interfacial dynamics. In this model, the contact angle is usually realized by a fluid-solid interaction. Two widely used fluid-solid interactions: the density-based interaction and the pseudopotential-based interaction, as well as a modified pseudopotential-based interaction formulated in the present paper, are numerically investigated and compared in terms of the achievable contact angles, the maximum and the minimum densities, and the spurious currents. It is found that the pseudopotential-based interaction works well for simulating small static (liquid) contact angles, however, is unable to reproduce static contact angles close to 180 degrees. Meanwhile, it is found that the proposed modified pseudopotential-based interaction performs better in light of the maximum and the minimum densities and is overall more suitable for simulating large contact angles as compared with the other two types of fluid-solid interactions. Furthermore, the spurious currents are found to be enlarged when the fluid-solid interaction force is introduced. Increasing the kinematic viscosity ratio between the vapor and liquid phases is shown to be capable of reducing the spurious currents caused by the fluid-solid interactions.

  7. Gallium nitride microcavities formed by photoenhanced wet oxidation

    SciTech Connect (OSTI)

    Peng, L.-H.; Lu, C.-Y.; Wu, W.-H.; Wang, S.-L. [Department of Electrical Engineering and Institute of Electro-Optical Engineering, National Taiwan University, Taipei, Taiwan (China)

    2005-10-17T23:59:59.000Z

    We report the formation of gallium nitride (GaN) microcavities by manipulating a photoenhanced oxidation rate difference between the polar and nonpolar crystallographic planes of GaN. When immersed in a buffered acetic (CH{sub 3}COOH) electrolyte of pH{approx}6.2 at room temperature, it is shown that the photo-oxidation can proceed at a rate that is one order of magnitude slower on the nonpolar plane of {l_brace}1100{r_brace}{sub GaN} than on the polar plane of {l_brace}0001{r_brace}{sub GaN} due to the reduced surface field action. Gallium nitride microcavities bounded by optically smooth {l_brace}1100{r_brace} and {l_brace}1103{r_brace} facets can thus be preferentially formed on the c-plane sapphire substrate after dissolving the oxide layer. The optical properties of these GaN hexagonal cavities reveal characteristic peaks of whispering gallery modes in resonance with the GaN band edge emission spectrum. A typical cavity Q factor of 10{sup 3} is observed in these GaN microcavities due to a reduced optical scattering loss in the wet chemical reaction process.

  8. Chemistry -Bachelor of Science (SCH3UG) Total Credits Required: 128 Chemistry/Secondary Education -ACS Certified

    E-Print Network [OSTI]

    Chemistry - Bachelor of Science (SCH3UG) Total Credits Required: 128 Chemistry/Secondary Education - 40 credits Course Credits Course Credits CH1150 University Chemistry I AND 3 CH3020 Laboratory Teaching Internship 2 CH1151 University Chemistry Lab 1 AND 1 CH4810 Design/Oper of High School Chemistry

  9. The Streaming Potential Generated by Flow of Wet Steam in Capillary Tubes

    SciTech Connect (OSTI)

    Marsden, S.S. Jr.; Tyran, Craig K.

    1986-01-21T23:59:59.000Z

    For a constant pressure differential, the flow of wet steam generated electric potentials which increased with time and did not reach equilibrium values. These potentials were found to increase to values greater than 100 volts. The reason for this kind of potential build-up behavior was the presence of tiny flowing water slugs which were interspersed with electrically nonconductive steam vapor slugs. The measured electric potential for wet steam increased with pressure differential, but the relationship was not linear. The increase in potential with pressure drop was attributed both to an increase in fluid flow rate and changes in the wet steam quality.

  10. Low-temperature catalytic gasification of wet industrial wastes. FY 1991--1992 interim report

    SciTech Connect (OSTI)

    Elliott, D.C.; Neuenschwander, G.G.; Hart, T.R.; Phelps, M.R.; Sealock, L.J. Jr.

    1993-07-01T23:59:59.000Z

    A catalytic gasification system operating in a pressurized water environment has been developed and refined at Pacific Northwest Laboratory (PNL) for over 12 years. Initial experiments were aimed at developing kinetics information for steam gasification of biomass in the presence of catalysts. The combined use of alkali and metal catalysts was reported for gasification of biomass and its components at low temperatures (350{degrees}C to 450{degrees}C). From the fundamental research evolved the concept of a pressurized, catalytic gasification system for converting wet biomass feedstocks to fuel gas. Extensive batch reactor testing and limited continuous reactor system (CRS) testing were undertaken in the development of this system under sponsorship of the US Department of Energy. A wide range of biomass feedstocks were tested, and the importance of the nickel metal catalyst was identified. Specific use of this process for treating food processing wastes was also studied. The concept application was further expanded to encompass cleanup of hazardous wastewater streams, and results were reported for batch reactor tests and continuous reactor tests. Ongoing work at PNL focuses on refining the catalyst and scaling the system to long-term industrial needs. The process is licensed as the Thermochemical Environmental Energy System (TEES{reg_sign}) to Onsite*Ofsite, Inc., of Duarte, California. This report is a follow-on to the 1989--90 interim report [Elliott et al. 1991], which reviewed the results of the studies conducted with a fixed-bed, continuous-feed, tubular reactor. The discussion here provides an overview of experiments on the wide range of potential feedstock materials conducted in a batch reactor; development of new catalyst materials; and tests performed in continuous-flow reactors at three scales. The appendices contain the history and background of the process development, as well as more detailed descriptions and results of the recent studies.

  11. Postdoctoral Researcher, Materials Chemistry (2 year contract)

    E-Print Network [OSTI]

    Humphrys, Mark

    Postdoctoral Researcher, Materials Chemistry (2 year contract) Adaptive Sensors Group Dublin City Foundation Ireland through the CLARITY CSET (www.clarity- centre.org), supplemented by significant project partners. The group's research strategy in materials chemistry research is to closely align activity

  12. Analytical Chemistry Division's sample transaction system

    SciTech Connect (OSTI)

    Stanton, J.S.; Tilson, P.A.

    1980-10-01T23:59:59.000Z

    The Analytical Chemistry Division uses the DECsystem-10 computer for a wide range of tasks: sample management, timekeeping, quality assurance, and data calculation. This document describes the features and operating characteristics of many of the computer programs used by the Division. The descriptions are divided into chapters which cover all of the information about one aspect of the Analytical Chemistry Division's computer processing.

  13. Ash Chemistry in MSW Incineration Plants

    E-Print Network [OSTI]

    Ash Chemistry in MSW Incineration Plants: Advanced Characterization and Thermodynamic Introduction to Municipal Solid Waste Incineration 2 Chapter 2 Plants Considered and Samples Collected 5 Chapter 3 Mapping of Ash Chemistry in MSWI Plants 8 Chapter 4 Advanced Characterization Methods 12 4

  14. Richard T. Oakley FRSC, Professor of Chemistry

    E-Print Network [OSTI]

    Le Roy, Robert J.

    Interests: Synthesis and solid state transport properties of open shell inorganic and organic ring systems. Heavy atom radicals as multifunctional molecular conductors and magnetic materials. Academic Background: B.Sc., 1969, Honours Chemistry, University of British Columbia M.Sc., 1970, Inorganic Chemistry

  15. Exploring Chemistry Using SMT Rolf Fagerberg1

    E-Print Network [OSTI]

    Flamm, Christoph

    Exploring Chemistry Using SMT Rolf Fagerberg1 , Christoph Flamm2 , Daniel Merkle1 , Philipp Peters1 power of Satisfiability Modulo Theory (SMT) solvers. We show results for an analysis of the Pentose in the usage of SMT for expressing search problems in chemistry, and in the generality of its resulting

  16. Chemistry 593: Stirling's Formula David Ronis

    E-Print Network [OSTI]

    Ronis, David M.

    Chemistry 593: Stirling's Formula © David Ronis McGill University There is a simple way to obtain) Winter, 2014 #12;Chemistry 593 -2- Stirling's Formula which implies that ln(x!)x ln(x) - x + ln[(2 x)1/2 ]. (4') Clearly, for xO(1023 ), the last logarithm is negligible, and the simple form of Stirling

  17. advanced organic chemistry: Topics by E-print Network

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

    9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 SYLLABUS for CHEMISTRY 2310 ORGANIC CHEMISTRY 1 Chemistry Websites Summary: Discussion...

  18. Chemistry -Bachelor of Science (SCH4UG) Total Credits Required: 128 Chemistry/Chemical Physics -ACS Certified

    E-Print Network [OSTI]

    Chemistry I 3 PH4210 Electricity and Magnetism I 3 CH3511 Physical Chemistry Lab I 2 PH4510 Intro to Solid Analysis 5 General Education Requirements - 28 credits CH4310 Inorganic Chemistry I 3 UN1001 Perspectives

  19. NERSC training events: Data Transfer and Archiving; Chemistry...

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

    training events: Data Transfer and Archiving; Chemistry and Material Sciences Applications NERSC training events: Data Transfer and Archiving; Chemistry and Material Sciences...

  20. June 26 Training: Using Chemistry and Material Sciences Applications

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

    June 26 Training: Using Chemistry and Material Sciences Applications June 26 Training: Using Chemistry and Material Sciences Applications June 15, 2012 by Francesca Verdier (0...

  1. Materials Science and Materials Chemistry for Large Scale Electrochemi...

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

    Science and Materials Chemistry for Large Scale Electrochemical Energy Storage: From Transportation to Electrical Grid Materials Science and Materials Chemistry for Large Scale...

  2. analytical chemistry: Topics by E-print Network

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

    from Analytical Chemistry, 1990, 62. Copyright 0 1990 by the American Chemical Society Ion Source Mark van Straaten,* Akos Vertes,' and Renaat Gijbels Department of Chemistry,...

  3. analytical chemistry division: Topics by E-print Network

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

    from Analytical Chemistry, 1990, 62. Copyright 0 1990 by the American Chemical Society Ion Source Mark van Straaten,* Akos Vertes,' and Renaat Gijbels Department of Chemistry,...

  4. analytical chemistry biochemical: Topics by E-print Network

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

    from Analytical Chemistry, 1990, 62. Copyright 0 1990 by the American Chemical Society Ion Source Mark van Straaten,* Akos Vertes,' and Renaat Gijbels Department of Chemistry,...

  5. analytical chemistry dac: Topics by E-print Network

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

    from Analytical Chemistry, 1990, 62. Copyright 0 1990 by the American Chemical Society Ion Source Mark van Straaten,* Akos Vertes,' and Renaat Gijbels Department of Chemistry,...

  6. Enriched Stable Isotope Materials and Chemistry | ornl.gov

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

    and Chemistry SHARE Enriched Stable Isotope Materials and Chemistry Reductiondistillation of calcium-48 metal valued at over 900,000. An inventory of 2,300 batches of...

  7. Private Company Uses EERE-Supported Chemistry Model to Substantially...

    Office of Environmental Management (EM)

    Private Company Uses EERE-Supported Chemistry Model to Substantially Improve Combustion Engine Simulation Software Private Company Uses EERE-Supported Chemistry Model to...

  8. association chemistry: Topics by E-print Network

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

    Summary: Gao, Chemistry Don Truhlar, Chemistry February 2007 12;Zn Metalloprotein Force Field Design Zn: unusual coordination, charge distribution at transition states in...

  9. activation chemistry: Topics by E-print Network

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

    Summary: Gao, Chemistry Don Truhlar, Chemistry February 2007 12;Zn Metalloprotein Force Field Design Zn: unusual coordination, charge distribution at transition states in...

  10. applied chemistry: Topics by E-print Network

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

    Summary: Gao, Chemistry Don Truhlar, Chemistry February 2007 12;Zn Metalloprotein Force Field Design Zn: unusual coordination, charge distribution at transition states in...

  11. applied edman chemistry: Topics by E-print Network

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

    Summary: Gao, Chemistry Don Truhlar, Chemistry February 2007 12;Zn Metalloprotein Force Field Design Zn: unusual coordination, charge distribution at transition states in...

  12. ainse radiation chemistry: Topics by E-print Network

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

    Summary: Gao, Chemistry Don Truhlar, Chemistry February 2007 12;Zn Metalloprotein Force Field Design Zn: unusual coordination, charge distribution at transition states in...

  13. atropisomeric lactam chemistry: Topics by E-print Network

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

    Summary: Gao, Chemistry Don Truhlar, Chemistry February 2007 12;Zn Metalloprotein Force Field Design Zn: unusual coordination, charge distribution at transition states in...

  14. Distance-dependent radiation chemistry: Oxidation versus hydrogenation...

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

    Distance-dependent radiation chemistry: Oxidation versus hydrogenation of CO in electron-irradiated H2OCOH2O ices. Distance-dependent radiation chemistry: Oxidation versus...

  15. High Level Computational Chemistry Approaches to the Prediction...

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

    Level Computational Chemistry Approaches to the Prediction of Energetic Properties of Chemical Hydrogen Storage Systems High Level Computational Chemistry Approaches to the...

  16. applied inorganic chemistry: Topics by E-print Network

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

    Bus.Admin.Public Admin. Chemical Engineering Chem. Eng.Comp. Sci. Chemistry Civil Engineering Heller, Barbara 6 Role of inorganic chemistry on nuclear energy examined...

  17. Molecular Chemistry of Organic Aerosols Through the Application...

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

    Chemistry of Organic Aerosols Through the Application of High Resolution Mass Spectrometry. Molecular Chemistry of Organic Aerosols Through the Application of High Resolution Mass...

  18. analytical chemistry general: Topics by E-print Network

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

    for students who have a prepared background in chemistry Ravikumar, B. 4 General syllabus for third-cycle studies in Technical Analytical Chemistry This syllabus has been...

  19. advanced physical chemistry: Topics by E-print Network

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

    material listed extended material on chemical kinetcs. (The topics covered are in the Syllabus below.) This means that Raina, Ramesh 2 CHEMISTRY 521 GRADUATE PHYSICAL CHEMISTRY...

  20. atmospheric physical chemistry: Topics by E-print Network

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

    1999, Michigan Technological University, Houghton, MI Ph.D. in Chemistry 8 Course Syllabus ATMO 613: Advanced Atmospheric Chemistry (Spring 2014) Geosciences Websites Summary:...

  1. Plastic Bags to Batteries: A Green Chemistry Solution | Argonne...

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

    Plastic Bags to Batteries: A Green Chemistry Solution Share Description Plastic bags are the scourge of roadsides, parking lots and landfills. But chemistry comes to the rescue At...

  2. MAY 14, 2008 Chemistry and environmental science professor receives Carroll

    E-Print Network [OSTI]

    Reid, Scott A.

    MAY 14, 2008 Chemistry and environmental science professor receives Carroll College faculty award WAUKESHA, WIS.-- An associate professor of chemistry and environmental science has received an annual

  3. aggregation chemistry: Topics by E-print Network

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

    Mission Statement The Sawyer Environmental Chemistry Research Laboratory is a multi industry. The Sawyer Environmental Chemistry Research Laboratory employs advanced analytical...

  4. Fuel Chemistry and Cetane Effects on HCCI Performance, Combustion...

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

    Chemistry and Cetane Effects on HCCI Performance, Combustion, and Emissions Cetane Performance and Chemistry Comparing Conventional Fuels and Fuels Derived from Heavy Crude Sources...

  5. applied chemistry division: Topics by E-print Network

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

    their independent research identity and become a chemistry research leader of the future. Funding for the most Oxford, University of 6 DIVISION OF MARINE AND ATMOSPHERIC CHEMISTRY...

  6. Substrate Changes Associated with the Chemistry of Self-Assembled...

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

    Substrate Changes Associated with the Chemistry of Self-Assembled Monolayers on Silicon. Substrate Changes Associated with the Chemistry of Self-Assembled Monolayers on Silicon....

  7. New Mass Spectrometry Techniques for Studying Physical Chemistry...

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

    Mass Spectrometry Techniques for Studying Physical Chemistry of Atmospheric Heterogeneous Processes. New Mass Spectrometry Techniques for Studying Physical Chemistry of Atmospheric...

  8. Redox Chemistry in Thin Layers of Organometallic Complexes Prepared...

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

    Redox Chemistry in Thin Layers of Organometallic Complexes Prepared Using Ion Soft Landing. Redox Chemistry in Thin Layers of Organometallic Complexes Prepared Using Ion Soft...

  9. Soil water content dependent wetting front characteristics in sands T.W.J. Bautersa

    E-Print Network [OSTI]

    Walter, M.Todd

    affects wetting front instability. A series of experiments were conducted where water was infiltrated in a 0.94 cm thick, 30 cm wide, and 55 cm long polycarbonate chamber filled with clean, 20­30 (US sieve

  10. Restoration of resaca wetlands and associated wet prairie habitats at Palo Alto Battlefield National Historic Site

    E-Print Network [OSTI]

    Margo, Michael Ray

    2006-08-16T23:59:59.000Z

    Cultivation and drainage projects associated with livestock production have substantially disturbed resaca wetlands and wet prairie habitats in southern Texas. As a consequence of the anthropogenic disturbances, the area of these wetlands has been...

  11. 1 Mathematical Model The mass consevation equations are for wetting phase

    E-Print Network [OSTI]

    Santos, Juan

    la wetting phase (brine, digamos). Menos aun para un gas, o sea si el CO2 no estuviera en estado se tiene en cuenta la compresibilidad del CO2, y ademas de la solubilidad en brine, pero eso es

  12. ChemCam follows the 'Yellowknife Road' to Martian wet area

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

    the 'Yellowknife Road' to martian wet area Researchers have tracked a trail of minerals that point to the prior presence of water at the Curiosity rover site on Mars....

  13. BIOETHANOL PRODUCTION FROM WET OXIDSED CORN STOVER USING PRE-TREATED MANURE AS A NUTRIENT SOURCE

    E-Print Network [OSTI]

    BIOETHANOL PRODUCTION FROM WET OXIDSED CORN STOVER USING PRE-TREATED MANURE AS A NUTRIENT SOURCE E for the production of bioethanol. This pre-treatment method, similar to other hot water pre-treatments, acts

  14. Wetting and phase-change phenomena on micro/nanostructures for enhanced heat transfer

    E-Print Network [OSTI]

    Xiao, Rong, Ph. D. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    Micro/nanostructures have been extensively studied to amplify the intrinsic wettability of materials to create superhydrophilic or superhydrophobic surfaces. Such extreme wetting properties can influence the heat transfer ...

  15. Feeding Value of Wet Sorghum Distillers Grains for Growing and Finishing Beef Cattle

    E-Print Network [OSTI]

    Feeding Value of Wet Sorghum Distillers Grains for Growing and Finishing Beef Cattle Ethanol, but sorghum grain is commonly either blended with corn before use or used as the sole grain for ethanol

  16. E-Print Network 3.0 - ashing wet Sample Search Results

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

    Sciences and Ecology 4 By-Products Utilization Summary: A3, containing 20% clean coal ash and 5% wet collected Class F ash had compressive strengths... 0 Center for...

  17. The Effect of Deformation on Grain Boundary Wetness in Partially Molten Peridotite

    E-Print Network [OSTI]

    Schneider, Stephen E.

    2006-07-11T23:59:59.000Z

    The spatial distribution of the melt phase can affect many properties of partially molten rocks, including viscosity and seismic wave velocity. A good way to quantify this distribution is the grain boundary wetness, the fraction of total grain...

  18. Simulation of Oil Displacement from Oil-Wet Cores by Interfacial Tension Reduction and Wettability Alteration

    E-Print Network [OSTI]

    Kalaei, Mohammad Hosein

    2010-01-29T23:59:59.000Z

    wettability toward water-wet may increase spontaneous imbibition of water. This change in rock wettability leads to positive capillary pressure and results in higher brine counter-current imbibition and therefore a higher oil production rate. A three...

  19. Energy Efficiency Improvements and Cost Saving Opportunities in the Corn Wet Milling Industry

    E-Print Network [OSTI]

    Galitsky, C.; Worrell, E.

    Corn wet milling is the most energy intensive industry in the food and kindred products group (SIC 20). Plants typically spend approximately $15 to 25 million per year on energy, one of its largest operating costs, making energy efficiency...

  20. Wetting transition behavior of Xe on Cs and Cs/graphite Stefano Curtarolo,1,

    E-Print Network [OSTI]

    Curtarolo, Stefano

    Wetting transition behavior of Xe on Cs and Cs/graphite Stefano Curtarolo,1, * Milton W. Cole,2 surface, covered by a monolayer of Cs. With data obtained from grand canonical Monte Carlo simulations

  1. Wet-Weather Flow Characterization for the Rock Creek through Monitoring and Modeling

    E-Print Network [OSTI]

    District of Columbia, University of the

    support of the following organizations: ­ DC Water Resources Research Institute ­ U.S. Geological Survey..................................................................16 Modeling of Urban Stormwater Management discharged to receiving waters demand that wet-weather flow control systems be planned and engineered

  2. Wetting hysteresis and droplet roll off behavior on superhydrophobic surfaces by Katherine Marie Smyth.

    E-Print Network [OSTI]

    Smyth, Katherine Marie

    2010-01-01T23:59:59.000Z

    Various states of hydrophobic wetting and hysteresis are observed when water droplets are deposited on micro-post surfaces of different post densities. Hysteresis is commonly defined as the difference between the advancing ...

  3. Rapid Deceleration-Driven Wetting Transition during Pendant Drop Deposition on Superhydrophobic Surfaces

    E-Print Network [OSTI]

    Kwon, HyukMin

    A hitherto unknown mechanism for wetting transition is reported. When a pendant drop settles upon deposition, there is a virtual “collision” where its center of gravity undergoes rapid deceleration. This induces a high ...

  4. Modeling of wet gas compression in twin-screw multiphase pump 

    E-Print Network [OSTI]

    Xu, Jian

    2009-05-15T23:59:59.000Z

    Twin-screw multiphase pumps experience a severe decrease in efficiency, even the breakdown of pumping function, when operating under wet gas conditions. Additionally, field operations have revealed significant vibration and thermal issues which can...

  5. COOPERATIVE RESEARCH IN C1 CHEMISTRY

    SciTech Connect (OSTI)

    Gerald P. Huffman

    2001-04-30T23:59:59.000Z

    Faculty and students from five universities (Kentucky, West Virginia, Utah, Pittsburgh and Auburn) are collaborating on a basic research program to develop novel C1 chemistry processes for the production of clean, high quality transportation fuel. An Industrial Advisory Board (IAB) with members from Chevron, Eastman Chemical, Energy International, Teir Associates, and the Department of Defense has been formed to provide practical guidance to the program. The program has two principal objectives. (1) Develop technology for conversion of C1 source materials (natural gas, synthesis gas, carbon dioxide and monoxide, and methanol) into clean, high efficiency transportation fuel. (2) Develop novel processes for producing hydrogen from natural gas and other hydrocarbons. Some of the principal accomplishments of the program in its first two years are: (1) The addition of acetylenic compounds in Fischer-Tropsch synthesis is found to produce significant amounts of oxygenated products in FT diesel fuels. Such oxygenated products should decrease particulate matter (PM) emissions. (2) Nanoscale, binary, Fe-based catalysts supported on alumina have been shown to have significant activity for the decomposition of methane into pure hydrogen and potentially valuable multi-walled carbon nanotubes. (3) Catalytic synthesis processes have been developed for synthesis of diethyl carbonate, higher ethers, and higher alcohols from C1 source materials. Testing of the effect of adding these oxygenates to diesel fuel on PM emissions has begun using a well-equipped small diesel engine test facility. (4) Supercritical fluid (SCF) FT synthesis has been conducted under SCF hexane using both Fe and Co catalysts. There is a marked effect on the hydrocarbon product distribution, with a shift to higher carbon number products. These and other results are summarized.

  6. Permeability and wet-out characterization of SRIM automotive bumper beams

    E-Print Network [OSTI]

    Morse, Christopher Todd

    1992-01-01T23:59:59.000Z

    PERMEABILITY AND WET-OUT CHARACTERIZATION OF SRIM AUTOMOTIVE BUMPER BEAMS A Thesis CHRISTOPHER TODD MORSE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE December 1992 Major Subject: Mechanical Engineering PERMEABILITY AND WET-OUT CHARACTERIZATION OF SRIM AUTOMOTIVE BUMPER BEAMS A Thesis by CHRISTOPHER TODD MORSE Submitted to the Office of Graduate Studies of Texas A&M University...

  7. Interrelationships between air velocity and natural wet-bulb thermometer response

    E-Print Network [OSTI]

    Jones, Nathan Glenn

    1983-01-01T23:59:59.000Z

    INTERRELATIONSHIPS BETWEEN AIR VFLOCITY ANO NATURAL WET-BULB THERMOMETER RESPONSE A Thesis by NATHAN GLENN JONES Submitted to the Graduate Colleqe of Texas ASM University i n partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE AUGUST 1983 Major Subject: Industrial Hygiene INTERRELATIONSHIPS BETWEEN AIR VELOCITY AND NATURAL WET-BULB THERMOMETER RESPONSE A Thesis by NATHAN GLENN JONES Approved as to style an content by: airman o ommittee er Member ~~' A~ Member...

  8. The mechano-chemistry of cytoskeletal force generation

    E-Print Network [OSTI]

    Mirko Maraldi; Krishna Garikipati

    2014-04-23T23:59:59.000Z

    In this communication, we propose a model to study the non-equilibrium process by which actin stress fibers develop force in contractile cells. The emphasis here is on the non-equilibrium thermodynamics, which is necessary to address the mechanics as well as the chemistry of dynamic cell contractility. In this setting we are able to develop a framework that relates (a) the dynamics of force generation within the cell and (b) the cell response to external stimuli to the chemical processes occurring within the cell, as well as to the mechanics of linkage between the stress fibers, focal adhesions and extra-cellular matrix.

  9. Chemistry Division annual progress report for period ending January 31, 1984

    SciTech Connect (OSTI)

    Not Available

    1984-05-01T23:59:59.000Z

    Progress is reported in the following fields: coal chemistry, aqueous chemistry at high temperatures and pressures, geochemistry, high-temperature chemistry and thermodynamics of structural materials, chemistry of transuranium elements and compounds, separations chemistry, elecrochemistry, catalysis, chemical physics, theoretical chemistry, nuclear waste chemistry, chemistry of hazardous chemicals, and thermal energy storage.

  10. User's guide for the BNW-III optimization code for modular dry/wet-cooled power plants

    SciTech Connect (OSTI)

    Braun, D.J.; Faletti, D.W.

    1984-09-01T23:59:59.000Z

    This user's guide describes BNW-III, a computer code developed by the Pacific Northwest Laboratory (PNL) as part of the Dry Cooling Enhancement Program sponsored by the US Department of Energy (DOE). The BNW-III code models a modular dry/wet cooling system for a nuclear or fossil fuel power plant. The purpose of this guide is to give the code user a brief description of what the BNW-III code is and how to use it. It describes the cooling system being modeled and the various models used. A detailed description of code input and code output is also included. The BNW-III code was developed to analyze a specific cooling system layout. However, there is a large degree of freedom in the type of cooling modules that can be selected and in the performance of those modules. The costs of the modules are input to the code, giving the user a great deal of flexibility.

  11. Intermediate-energy nuclear chemistry workshop

    SciTech Connect (OSTI)

    Butler, G.W.; Giesler, G.C.; Liu, L.C.; Dropesky, B.J.; Knight, J.D.; Lucero, F.; Orth, C.J.

    1981-05-01T23:59:59.000Z

    This report contains the proceedings of the LAMPF Intermediate-Energy Nuclear Chemistry Workshop held in Los Alamos, New Mexico, June 23-27, 1980. The first two days of the Workshop were devoted to invited review talks highlighting current experimental and theoretical research activities in intermediate-energy nuclear chemistry and physics. Working panels representing major topic areas carried out indepth appraisals of present research and formulated recommendations for future research directions. The major topic areas were Pion-Nucleus Reactions, Nucleon-Nucleus Reactions and Nuclei Far from Stability, Mesonic Atoms, Exotic Interactions, New Theoretical Approaches, and New Experimental Techniques and New Nuclear Chemistry Facilities.

  12. Chemistry of Cobalt-Platinum Nanocatalysts

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z CPlasma of theChemistry OxideChemistry ofChemistry

  13. The Use of Electrochemical Techniques to Characterize Wet Steam Environments

    SciTech Connect (OSTI)

    Bruce W. Bussert; John A. Crowley; Kenneth J. Kimball; Brian J. Lashway

    2003-04-30T23:59:59.000Z

    The composition of a steam phase in equilibrium with a water phase at high temperature is remarkably affected by the varying capabilities of the water phase constituents to partition into the steam. Ionic impurities (sodium, chloride, sulfate, etc.) tend to remain in the water phase, while weakly ionic or gaseous species (oxygen) partition into the steam. Analysis of the water phase can provide misleading results concerning the steam phase composition or environment. This paper describes efforts that were made to use novel electrochemical probes and sampling techniques to directly characterize a wet steam phase environment in equilibrium with high temperature water. Probes were designed to make electrochemical measurements in the thin film of water existing on exposed surfaces in steam over a water phase. Some of these probes were referenced against a conventional high temperature electrode located in the water phase. Others used two different materials (typically tungsten and platinum) to make measurements without a true reference electrode. The novel probes were also deployed in a steam space removed from the water phase. It was necessary to construct a reservoir and an external, air-cooled condenser to automatically keep the reservoir full of condensed steam. Conventional reference and working electrodes were placed in the water phase of the reservoir and the novel probes protruded into the vapor space above it. Finally, water phase probes (both reference and working electrodes) were added to the hot condensed steam in the external condenser. Since the condensing action collapsed the volatiles back into the water phase, these electrodes proved to be extremely sensitive at detecting oxygen, which is one of the species of highest concern in high temperature power systems. Although the novel steam phase probes provided encouraging initial results, the tendency for tungsten to completely corrode away in the steam phase limited their usefulness. However, the conventional water phase electrodes, installed both in the reservoir and in the external condensing coil, provided useful data showing the adverse impact of oxygen and carbon dioxide on the REDOX potential and high temperature pH, respectively.

  14. Hiking the valleys of quatum chemistry

    SciTech Connect (OSTI)

    Aikens, Christine Marie

    2005-08-01T23:59:59.000Z

    This thesis is concerned with both the application and the extension of quantum chemical methods. Each chapter of the thesis represents a paper that has been published in or will be submitted to a scientific journal. The first three chapters of this thesis describe contributions made to chemistry through the use of quantum chemical methods, while the final two chapters illustrate the development of new methods. Chapter 2 and Chapter 3 characterize a study of the electronic structure and magnetic properties of homodinuclear titanium(III) complexes, in order to determine trends related to their potential use as molecular magnets. Chapter 2 focuses on hydride and halide bridging and terminal ligands, while Chapter 3 explores bridging ligands from other groups in the periodic table. Chapter 4 portrays a study of the solvation of glycine. Microsolvation and continuum solvation approaches are investigated in order to study the structures of small glycine-water clusters and determine the energy difference between the zwitterionic and nonionized forms of glycine, the simplest amino acid. Chapters 5 and 6 describe the implementation of analytic gradients, which are required for efficient molecular geometry optimizations, for two open-shell second-order perturbation theory methods. Chapter 5 discusses gradients for unrestricted Moeller-Plesset perturbation theory, and Chapter 6 describes gradients for Z-averaged perturbation theory.

  15. Chemical Processing in High-Pressure Aqueous Environments. 7...

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

    Aqueous Environments. 7. Process Development for Catalytic Gasification of Wet Biomass Feedstocks."Industrial and Engineering Chemistry Research 43(9):1999-2004. Authors: DC...

  16. Contained radiological analytical chemistry module

    DOE Patents [OSTI]

    Barney, David M. (Scotia, NY)

    1989-01-01T23:59:59.000Z

    A system which provides analytical determination of a plurality of water chemistry parameters with respect to water samples subject to radiological contamination. The system includes a water sample analyzer disposed within a containment and comprising a sampling section for providing predetermined volumes of samples for analysis; a flow control section for controlling the flow through the system; and a gas analysis section for analyzing samples provided by the sampling system. The sampling section includes a controllable multiple port valve for, in one position, metering out sample of a predetermined volume and for, in a second position, delivering the material sample for analysis. The flow control section includes a regulator valve for reducing the pressure in a portion of the system to provide a low pressure region, and measurement devices located in the low pressure region for measuring sample parameters such as pH and conductivity, at low pressure. The gas analysis section which is of independent utility provides for isolating a small water sample and extracting the dissolved gases therefrom into a small expansion volume wherein the gas pressure and thermoconductivity of the extracted gas are measured.

  17. Contained radiological analytical chemistry module

    DOE Patents [OSTI]

    Barney, David M. (Scotia, NY)

    1990-01-01T23:59:59.000Z

    A system which provides analytical determination of a plurality of water chemistry parameters with respect to water samples subject to radiological contamination. The system includes a water sample analyzer disposed within a containment and comprising a sampling section for providing predetermined volumes of samples for analysis; a flow control section for controlling the flow through the system; and a gas analysis section for analyzing samples provided by the sampling system. The sampling section includes a controllable multiple port valve for, in one position, metering out sample of a predetermined volume and for, in a second position, delivering the material sample for analysis. The flow control section includes a regulator valve for reducing the pressure in a portion of the system to provide a low pressure region, and measurement devices located in the low pressure region for measuring sample parameters such as pH and conductivity, at low pressure. The gas analysis section which is of independent utility provides for isolating a small water sample and extracting the dissolved gases therefrom into a small expansion volume wherein the gas pressure and thermoconductivity of the extracted gas are measured.

  18. Pollution of Natural Waters 1. Redox chemistry

    E-Print Network [OSTI]

    Schofield, Jeremy

    . Eutrophication 4. Water treatment 1. Redox chemistry #15; Principle of equilibration of chemical system R Keq;sh and other aquatic life { Shift to anaerobic metabolic mechanisms #15; Eutrophication: agin

  19. CHEMISTRY OF SILICA IN CERRO PRIETO BRINES

    E-Print Network [OSTI]

    Weres, O.

    2012-01-01T23:59:59.000Z

    chemistry of silica in Cerro Prieto brine may profitably be14 mg·l-1 AND SYNTHFTIC CERRO PRIETO BRINES High Ca We112Q.by the CFE Laboratory at Cerro Prieto and kindly provided to

  20. Computational Science and Engineering Certification for Chemistry

    E-Print Network [OSTI]

    Gilbert, Matthew

    Computational Science and Engineering Certification for Chemistry The Computational Science that are distinct from already- required coursework. To receive a certificate in "Computational Science a solid base in problem solving using computation as a major tool for modeling complicated problems

  1. Eugene R. Zubarev Department of Chemistry

    E-Print Network [OSTI]

    Zubarev, Eugene

    , amphiphilic structures. Experimental: organic synthesis, polymerization, synthesis of inorganic nanocrystals-2005 Assistant Professor of Materials Science and Engineering, Iowa State University 2000-2002 Research Associate and supramolecular chemistry, molecular self-assembly, organic-inorganic hybrid structures, nanoparticle catalysts

  2. February 11, 1987 I Inorganic Chemistry

    E-Print Network [OSTI]

    Girolami, Gregory S.

    Volume 26 Number 3 February 11, 1987 I Inorganic Chemistry 0 Copyright 1987 by the American uranium phthalocyanine derivatives have been crystallographically (I) (a) Kasuga, K.; Tsutsui, M. Coord

  3. Physics and chemistry of gas in discs 

    E-Print Network [OSTI]

    Tilling, Ian

    2013-11-28T23:59:59.000Z

    Protoplanetary discs set the initial conditions for planet formation. By combining observations with detailed modelling, it is possible to constrain the physics and chemistry in such discs. I have used the detailed ...

  4. Chemistry in Higher What's available and where is the info?

    E-Print Network [OSTI]

    Anderson, Jim

    Chemistry in Higher Education What's available and where is the info? What does studying chemistry? Where does it lead and what might a chemistry career look like? Dr. David Read, Director of Outreach 2013 #12;310 (294) HE courses with chemistry offered as a single subject hosted at 53 universities 699

  5. Chemistry 100 Fall 2011 Page 1 of 5

    E-Print Network [OSTI]

    Indiana University

    Chemistry 100 ­ Fall 2011 Page 1 of 5 The World of Chemistry ­ Course Syllabus Instructor Kirkwood Hall 212 Texts: Required: Chemistry in Context (CC) Course information is online through OnCourse. Course Objective(s): The primary goal of this course is to teach you about the chemistry that surrounds

  6. MAJOR TO CAREER GUIDE B.A. Chemistry

    E-Print Network [OSTI]

    Walker, Lawrence R.

    MAJOR TO CAREER GUIDE B.A. Chemistry College of Sciences www.unlv.edu/chemistry Mission of the College of Sciences The College of Sciences offers programs in life sciences, chemistry, geoscience: 702-895-2077 Campus Location: MPE-A 130 www.unlv.edu/sciences/advising About the Chemistry Career

  7. MAJOR TO CAREER GUIDE B.S. Chemistry

    E-Print Network [OSTI]

    Walker, Lawrence R.

    MAJOR TO CAREER GUIDE B.S. Chemistry College of Sciences www.unlv.edu/chemistry Mission of the College of Sciences The College of Sciences offers programs in life sciences, chemistry, geoscience: 702-895-2077 Campus Location: MPE-A 130 www.unlv.edu/sciences/advising Chemistry Career Options

  8. Chemistry Major and Minor www.chem.pitt.edu

    E-Print Network [OSTI]

    Jiang, Huiqiang

    Chemistry Major and Minor www.chem.pitt.edu Revised: 10/2012 Chemistry is the most central disease, and processes to provide energy for societal needs. Chemistry plays an ever-increasing role design and ceramics. The bachelor's degree in chemistry consists of core courses in four primary areas

  9. ISSN 1463-9076 Physical Chemistry Chemical Physics

    E-Print Network [OSTI]

    Alavi, Ali

    on structural a London Centre for Nanotechnology and Department of Chemistry, University College London, London

  10. Chemistry -Bachelor of Science (SCH2UG) Total Credits Required: 128 Chemistry/Biochemistry -ACS Certified

    E-Print Network [OSTI]

    of the following courses 3 CH1122 University Chemistry - Studio Lab II 5 BL3300 Introduction to Genomics 3 CH1130

  11. Ramon Eritja Nucleic Acid Chemistry Group

    E-Print Network [OSTI]

    Ritort, Felix

    Ramon Eritja Nucleic Acid Chemistry Group Chemistry and Molecular Pharmacology Dpt. IRB Barcelona nanoparticle assemblies. #12;The DNA can be used as template for the fabrication of silver nanowires between;Preparation of thiol-functionalized arrays N N O NH S-St Bu N N O NH S-St Bu N N O NH S-St BuO DMT-O O P O N

  12. Chemistry 365: Stirling's Formula David Ronis

    E-Print Network [OSTI]

    Ronis, David M.

    Chemistry 365: Stirling's Formula © David Ronis McGill University There is a simple way to obtain;Chemistry 365 -2- Stirling's Formula x!(2 )1/2 xx+1/2 e-x , (4) which implies that ln(x!)x ln(x) - x + ln[(2 of Stirling's formula ln(x!)x[ln(x) - 1], is obtained. With a little extra effort you can work out the next

  13. Exhaust Phosphorous Chemistry | Department of Energy

    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 DataDepartment of Energy Your Density Isn't Your Destiny:RevisedAdvisoryStandardGenerationEducationalChemistry Exhaust Phosphorous Chemistry

  14. Development of a wet vapor homogeneous liquid metal MHD power system. Final report

    SciTech Connect (OSTI)

    Branover, H.; Unger, Y.; El-Boher, A.; Schweitzer, H.

    1991-09-01T23:59:59.000Z

    A feasibility study for the approval of liquid metal seeds recovery from a liquid metal vapor-inert gas mixture was conducted and presented in this report. The research activity included background studies on processes relating to mixing stream condenser performance, parametric studies and its experimental validation. The condensation process under study includes mass transfer phenomena combined with heat transfer and phase change. Numerical methods were used in order to solve the dynamic equations and to carry out the parametric study as well as the experimental data reduction. The MSC performance is highly effected by droplet diameter, thus the possibility of atomizing liquid metals were experimentally investigated. The results are generalized and finally used for a set of recommendations by which the recovery of seeds is expected to be feasible.

  15. DEVELOPMENT OF AN ALGAL BIOSENSOR FOR TOXICITY ASSESSMENT OF URBAN WET WEATHER

    E-Print Network [OSTI]

    Boyer, Edmond

    .ferro@entpe.fr Abstract Stormwater runoff from urban areas generates various pollutants (suspended solids, heavy metals of receiving water bodies (urban streams, ground water). In order to preserve aquatic ecosystems the contamination of these effluents by various compounds: heavy metals, polycyclic aromatic hydrocarbons (PAHs

  16. Bond selective chemistry beyond the adiabatic approximation

    SciTech Connect (OSTI)

    Butler, L.J. [Univ. of Chicago, IL (United States)

    1993-12-01T23:59:59.000Z

    One of the most important challenges in chemistry is to develop predictive ability for the branching between energetically allowed chemical reaction pathways. Such predictive capability, coupled with a fundamental understanding of the important molecular interactions, is essential to the development and utilization of new fuels and the design of efficient combustion processes. Existing transition state and exact quantum theories successfully predict the branching between available product channels for systems in which each reaction coordinate can be adequately described by different paths along a single adiabatic potential energy surface. In particular, unimolecular dissociation following thermal, infrared multiphoton, or overtone excitation in the ground state yields a branching between energetically allowed product channels which can be successfully predicted by the application of statistical theories, i.e. the weakest bond breaks. (The predictions are particularly good for competing reactions in which when there is no saddle point along the reaction coordinates, as in simple bond fission reactions.) The predicted lack of bond selectivity results from the assumption of rapid internal vibrational energy redistribution and the implicit use of a single adiabatic Born-Oppenheimer potential energy surface for the reaction. However, the adiabatic approximation is not valid for the reaction of a wide variety of energetic materials and organic fuels; coupling between the electronic states of the reacting species play a a key role in determining the selectivity of the chemical reactions induced. The work described below investigated the central role played by coupling between electronic states in polyatomic molecules in determining the selective branching between energetically allowed fragmentation pathways in two key systems.

  17. Stephen L. Morgan, Department of Chemistry & Biochemistry, University of South Carolina, 2014. 1 Department of Chemistry & Biochemistry

    E-Print Network [OSTI]

    Morgan, Stephen L.

    "that is "similar to gasoline in flammability," said Rick L. Danheiser, professor of chemistry and chairStephen L. Morgan, Department of Chemistry & Biochemistry, University of South Carolina, 2014. 1 Department of Chemistry & Biochemistry The University of South Carolina USC Chemistry & Biochemistry Safety

  18. Applied physical chemistry progress report, October 1991--September 1992

    SciTech Connect (OSTI)

    Johnson, C.E.; Attaya, H.M.; Billone, M.C.; Blomquist, R.A.; Kopasz, J.P.; Leibowitz, L.; Roche, M.F.; Seils, C.A.

    1993-12-01T23:59:59.000Z

    This document reports on the work done in applied physical chemistry at the Chemical Technology Division (CMT), Argonne National Laboratory (ANL), in the period October 1991 through September 1992. this work includes research into the process that control the release and transport of fission products under accident-like conditions in a light water reactor, the thermophysical properties of the metal fuel in the Integral Fast Reactor under development at ANL, and the properties of candidate tritium breeding materials in environments simulating those of fusion energy systems. Viscosity and liquidus-solidus temperatures of core-concrete mixtures were studied.

  19. Inorganic Chemistry in Hydrogen Storage and Biomass Catalysis

    SciTech Connect (OSTI)

    Thorn, David [Los Alamos National Laboratory

    2012-06-13T23:59:59.000Z

    Making or breaking C-H, B-H, C-C bonds has been at the core of catalysis for many years. Making or breaking these bonds to store or recover energy presents us with fresh challenges, including how to catalyze these transformations in molecular systems that are 'tuned' to minimize energy loss and in molecular and material systems present in biomass. This talk will discuss some challenging transformations in chemical hydrogen storage, and some aspects of the inorganic chemistry we are studying in the development of catalysts for biomass utilization.

  20. Manual of analytical methods for the Industrial Hygiene Chemistry Laboratory

    SciTech Connect (OSTI)

    Greulich, K.A.; Gray, C.E. (comp.)

    1991-08-01T23:59:59.000Z

    This Manual is compiled from techniques used in the Industrial Hygiene Chemistry Laboratory of Sandia National Laboratories in Albuquerque, New Mexico. The procedures are similar to those used in other laboratories devoted to industrial hygiene practices. Some of the methods are standard; some, modified to suit our needs; and still others, developed at Sandia. The authors have attempted to present all methods in a simple and concise manner but in sufficient detail to make them readily usable. It is not to be inferred that these methods are universal for any type of sample, but they have been found very reliable for the types of samples mentioned.

  1. Modeling aluminum etch chemistry in high density plasmas

    SciTech Connect (OSTI)

    Meeks, E. [Sandia National Labs., Livermore, CA (United States); Ho, P.; Buss, R. [Sandia National Labs., Albuquerque, NM (United States)

    1997-08-01T23:59:59.000Z

    The authors have assembled a chemical reaction mechanism that describes the BCl{sub 3}/Cl{sub 2}/Ar plasma etch of Al metallization layers. The reaction set for gas-phase and surface processes was derived either from literature data or estimated from data on related systems. A well-mixed reactor model was used to develop the mechanism and test it against experimental measurements of plasma species and etch-rates in processing reactors. Finally, use of reduced chemistry mechanisms are demonstrated in 2-D simulations for a complex reactor geometry.

  2. Sem. Chemistry Materials Science Electrical Engineering Miscellaneous CP Introduction to General Chemistry,

    E-Print Network [OSTI]

    Pfeifer, Holger

    Sem. Chemistry Materials Science Electrical Engineering Miscellaneous CP Introduction to General & Inorganic Materials Chemistry (4 CP) Energy Science and Technology I (5 CP) Surfaces/Interfaces/ Heterogen. Catalysis/ Electrocatalysis (5 CP) Materials Science II (5 CP) Energy Science and Technology II ( 5 CP

  3. Inorganic water chemistry 71 Chapter 4 -Inorganic Water Chemistry of the Boulder Creek

    E-Print Network [OSTI]

    Inorganic water chemistry 71 Chapter 4 - Inorganic Water Chemistry of the Boulder Creek Watershed Creek Watershed, Colorado were determined on a suite of water samples collected during high and low flow sixteen stream sites, twelve tributaries/inflows, and Saint Vrain Creek. The most upstream site was above

  4. Pre-photolithographic GaAs surface treatment for improved photoresist adhesion during wet chemical etching and improved wet etch profiles.

    SciTech Connect (OSTI)

    Martinez, Marino John; Clevenger, Jascinda; Austin, Franklin H., IV (, LMATA, Albuquerque, NM); Sullivan, Charles Thomas; Patrizi, Gary A.; Romero, Katherine (LMATA, Albuquerque, NM); Timon, Robert P.; Vigil, Pablita S. (LMATA, Albuquerque, NM); Grine, Alejandro J.

    2010-05-01T23:59:59.000Z

    Results of several experiments aimed at remedying photoresist adhesion failure during spray wet chemical etching of InGaP/GaAs NPN HBTs are reported. Several factors were identified that could influence adhesion and a Design of Experiment (DOE) approach was used to study the effects and interactions of selected factors. The most significant adhesion improvement identified is the incorporation of a native oxide etch immediately prior to the photoresist coat. In addition to improving adhesion, this pre-coat treatment also alters the wet etch profile of (100) GaAs so that the reaction limited etch is more isotropic compared to wafers without surface treatment; the profiles have a positive taper in both the [011] and [011] directions, but the taper angles are not identical. The altered profiles have allowed us to predictably yield fully probe-able HBTs with 5 x 5 {micro}m emitters using 5200 {angstrom} evaporated metal without planarization.

  5. A theory for heat exchangers with liquid-desiccant-wetted surfaces

    SciTech Connect (OSTI)

    Otterbein, R.T. [Otterbein Engineering, Phoenix, AZ (United States)

    1995-08-01T23:59:59.000Z

    The following theory extends the wet surface model of Maclaine-cross and Banks (1981) to include heat exchangers that heat or cool moist air with liquid-desiccant-wetted surfaces. The theory uses a wall boundary condition that forces the moist air to be at an arbitrary relative humidity that is less than totally saturated. The theory defines a new temperature scale (brine-bulb temperature) for which the wet-bulb temperature is a special case. Brine-bulb heat capacitance and heat transfer coefficient are defined. By using an analogy to the dry surface heat exchanger theory, the performance of these heat exchangers can then be estimated from the performance of geometrically identical heat exchangers with a dry surface. Charts to utilize the theory at various elevations are shown.

  6. Chemistry Impacts in Gasoline HCCI

    SciTech Connect (OSTI)

    Szybist, James P [ORNL; Bunting, Bruce G [ORNL

    2006-09-01T23:59:59.000Z

    The use of homogeneous charge compression ignition (HCCI) combustion in internal combustion engines is of interest because it has the potential to produce low oxides of nitrogen (NOx) and particulate matter (PM) emissions while providing diesel-like efficiency. In HCCI combustion, a premixed charge of fuel and air auto-ignites at multiple points in the cylinder near top dead center (TDC), resulting in rapid combustion with very little flame propagation. In order to prevent excessive knocking during HCCI combustion, it must take place in a dilute environment, resulting from either operating fuel lean or providing high levels of either internal or external exhaust gas recirculation (EGR). Operating the engine in a dilute environment can substantially reduce the pumping losses, thus providing the main efficiency advantage compared to spark-ignition (SI) engines. Low NOx and PM emissions have been reported by virtually all researchers for operation under HCCI conditions. The precise emissions can vary depending on how well mixed the intake charge is, the fuel used, and the phasing of the HCCI combustion event; but it is common for there to be no measurable PM emissions and NOx emissions <10 ppm. Much of the early HCCI work was done on 2-stroke engines, and in these studies the CO and hydrocarbon emissions were reported to decrease [1]. However, in modern 4-stroke engines, the CO and hydrocarbon emissions from HCCI usually represent a marked increase compared with conventional SI combustion. This literature review does not report on HCCI emissions because the trends mentioned above are well established in the literature. The main focus of this literature review is the auto-ignition performance of gasoline-type fuels. It follows that this discussion relies heavily on the extensive information available about gasoline auto-ignition from studying knock in SI engines. Section 2 discusses hydrocarbon auto-ignition, the octane number scale, the chemistry behind it, its shortcomings, and its relevance to HCCI. Section 3 discusses the effects of fuel volatility on fuel and air mixing and the consequences it has on HCCI. The effects of alcohol fuels on HCCI performance, and specifically the effects that they have on the operable speed/load range, are reviewed in Section 4. Finally, conclusions are drawn in Section 5.

  7. System and method for monitoring wet bulb temperature in a flue gas stream

    SciTech Connect (OSTI)

    Glover, R.L.; Bland, V.V.

    1990-01-02T23:59:59.000Z

    This patent describes in a system for monitoring wet bulb temperature in a flue gas stream means for extracting a sample of the gas from the flue, means for heating the sample to maintain the sample at substantially the same temperature as the gas in the flue, a sensor for measuring the wet bulb temperature of the sample, a reservoir of liquid, a liquid absorbent wick surrounding the sensor and extending into the liquid in the reservoir, and means for maintaining the liquid in the reservoir at a substantially constant level.

  8. ,"Louisiana Natural Gas, Wet After Lease Separation Proved Reserves (Billion Cubic Feet)"

    U.S. Energy Information Administration (EIA) 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS Codes; Column: Energy Sources and Shipments;NetPriceNonassociated Natural Gas, WetGas, Wet After Lease

  9. Mobile encapsulation and volume reduction system for wet low-level wastes

    SciTech Connect (OSTI)

    Buelt, J.L.

    1985-08-01T23:59:59.000Z

    This report describes the results of the program entitled ''A Preconceptual Study for a Transportable Vitrification Process''. The objective of the study is to determine the feasibility of a Mobile Encapsulation and Volume Reduction System (MEVS). The report contains design criteria, a preconceptual design of the system, a comparison of disposal costs with other solidification technologies, and an assessment of utility interests in the transportable volume reduction service MEVS can provide. The MEVS design employs the use of a joule-heated glass melter to convert the wet low-level wastes into glass. The process is self-sufficient, requiring no direct facility services or reactor personnel. It is capable of servicing one waste type from a minimum of three reactors. The design was used to prepare capital and operating cost estimates. The capital cost for the MEVS is $4,680,000, which includes all labor necessary for design, engineering, inspection, and licensing. The operating cost of the system for servicing a minimum of three reactors is $1,530,000/y for resins or $2,280,000/y for concentrated liquids. The cost estimates compared favorably to the more common solidification process of cementation. Total MEVS operating costs which include processing, transportation and burial, are $191 to $218/ft/sup 3/ waste, whereas quoted costs for cementation and disposal from reactor operators range from $155 to $350/ft/sup 3/. The report concludes with the requirements for additional development, which can be accomplished for less than one sixth of the capital costs. The report also presents the results of an assessment conducted with utility representatives to obtain their expressions of interest in a service of this type.

  10. This journal is c The Royal Society of Chemistry 2010 Chem. Commun., 2010, 46, 91679169 9167 Cubic and rhombohedral heterobimetallic networks constructed from

    E-Print Network [OSTI]

    . The synthetic and materials chemistry of uranium is the best developed in the actinide series, and has expandedThis journal is c The Royal Society of Chemistry 2010 Chem. Commun., 2010, 46, 9167­9169 9167 Cubic and rhombohedral heterobimetallic networks constructed from uranium, transition metals, and phosphonoacetate: new

  11. Performance Characteristics of Lithium-ion Batteries of Various Chemistries for Plug-in Hybrid Vehicles

    E-Print Network [OSTI]

    Burke, Andrew; Miller, Marshall

    2009-01-01T23:59:59.000Z

    Whether any of the lithium battery chemistries can meetgeneral the higher cost lithium battery chemistries have thecosts for various lithium battery chemistries Electrode

  12. Reduction Chemistry of Rare-Earth Metal Complexes: Toward New Reactivity and Properties

    E-Print Network [OSTI]

    Huang, Wenliang

    2013-01-01T23:59:59.000Z

    and Chemistry of Rare Earths; Karl A. Gschneidner, Jr. ,and Chemistry of Rare Earths; Karl A. Gschneidner, Jr. ,and Chemistry of Rare Earths; Gschneidner, K. A. , Bünzli,

  13. Developments in the chemistry and nanodelivery of platinum anticancer agents

    E-Print Network [OSTI]

    Johnstone, Timothy Charles

    2014-01-01T23:59:59.000Z

    Approximately half of all patients receiving cancer chemotherapy are treated with a platinum-containing drug. Despite this intense clinical use, only three platinum complexes, cisplatin, carboplatin, and oxaliplatin, are ...

  14. Advanced fuel chemistry for advanced engines.

    SciTech Connect (OSTI)

    Taatjes, Craig A.; Jusinski, Leonard E.; Zador, Judit; Fernandes, Ravi X.; Miller, James A.

    2009-09-01T23:59:59.000Z

    Autoignition chemistry is central to predictive modeling of many advanced engine designs that combine high efficiency and low inherent pollutant emissions. This chemistry, and especially its pressure dependence, is poorly known for fuels derived from heavy petroleum and for biofuels, both of which are becoming increasingly prominent in the nation's fuel stream. We have investigated the pressure dependence of key ignition reactions for a series of molecules representative of non-traditional and alternative fuels. These investigations combined experimental characterization of hydroxyl radical production in well-controlled photolytically initiated oxidation and a hybrid modeling strategy that linked detailed quantum chemistry and computational kinetics of critical reactions with rate-equation models of the global chemical system. Comprehensive mechanisms for autoignition generally ignore the pressure dependence of branching fractions in the important alkyl + O{sub 2} reaction systems; however we have demonstrated that pressure-dependent 'formally direct' pathways persist at in-cylinder pressures.

  15. Chemistry of Low Mass Substellar Objects

    E-Print Network [OSTI]

    Katharina Lodders; Bruce Fegley, Jr

    2006-01-17T23:59:59.000Z

    "Brown dwarfs" is the collective name for objects more massive than giant planets such as Jupiter but less massive than M dwarf stars. This review gives a brief description of the classification and chemistry of low mass dwarfs. The current spectral classification of stars includes L and T dwarfs that encompass the coolest known stars and substellar objects. The relatively low atmospheric temperatures and high total pressures in substellar dwarfs lead to molecular gas and condensate chemistry. The chemistry of elements such as C, N, O, Ti, V, Fe, Cr, and the alkali elements play a dominant role in shaping the optical and infrared spectra of the "failed" stars. Chemical diagnostics for the subclassifications are described.

  16. Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems

    SciTech Connect (OSTI)

    Richard Rhudy

    2006-06-30T23:59:59.000Z

    This final report presents and discusses results from a mercury control process development project entitled ''Pilot Testing of Mercury Oxidation Catalysts for Upstream of Wet FGD Systems''. The objective of this project was to demonstrate at pilot scale a mercury control technology that uses solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. Oxidized mercury is removed in downstream wet flue gas desulfurization (FGD) absorbers and leaves with the FGD byproducts. The goal of the project was to achieve 90% oxidation of elemental mercury in the flue gas and 90% overall mercury capture with the downstream wet FGD system. The project was co-funded by EPRI and the U.S. Department of Energy's National Energy Technology Laboratory (DOE NETL) under Cooperative Agreement DE-FC26-01NT41185. Great River Energy (GRE) and City Public Service (now CPS Energy) of San Antonio were also project co-funders and provided host sites. URS Group, Inc. was the prime contractor. Longer-term pilot-scale tests were conducted at two sites to provide catalyst life data. GRE provided the first site, at their Coal Creek Station (CCS), which fires North Dakota lignite, and CPS Energy provided the second site, at their Spruce Plant, which fires Powder River Basin (PRB) coal. Mercury oxidation catalyst testing began at CCS in October 2002 and continued through the end of June 2004, representing nearly 21 months of catalyst operation. An important finding was that, even though the mercury oxidation catalyst pilot unit was installed downstream of a high-efficiency ESP, fly ash buildup began to plug flue gas flow through the horizontal catalyst cells. Sonic horns were installed in each catalyst compartment and appeared to limit fly ash buildup. A palladium-based catalyst showed initial elemental mercury oxidation percentages of 95% across the catalyst, declining to 67% after 21 months in service. A carbon-based catalyst began with almost 98% elemental mercury oxidation across the catalyst, but declined to 79% oxidation after nearly 13 months in service. The other two catalysts, an SCR-type catalyst (titanium/vanadium) and an experimental fly-ash-based catalyst, were significantly less active. The palladium-based and SCR-type catalysts were effectively regenerated at the end of the long-term test by flowing heated air through the catalyst overnight. The carbon-based catalyst was not observed to regenerate, and no regeneration tests were conducted on the fourth, fly-ash-based catalyst. Preliminary process economics were developed for the palladium and carbon-based catalysts for a scrubbed, North Dakota lignite application. As described above, the pilot-scale results showed the catalysts could not sustain 90% or greater oxidation of elemental mercury in the flue gas for a period of two years. Consequently, the economics were based on performance criteria in a later DOE NETL solicitation, which required candidate mercury control technologies to achieve at least a 55% increase in mercury capture for plants that fire lignite. These economics show that if the catalysts must be replaced every two years, the catalytic oxidation process can be 30 to 40% less costly than conventional (not chemically treated) activated carbon injection if the plant currently sells their fly ash and would lose those sales with carbon injection. If the plant does not sell their fly ash, activated carbon injection was estimated to be slightly less costly. There was little difference in the estimated cost for palladium versus the carbon-based catalysts. If the palladium-based catalyst can be regenerated to double its life to four years, catalytic oxidation process economics are greatly improved. With regeneration, the catalytic oxidation process shows over a 50% reduction in mercury control cost compared to conventional activated carbon injection for a case where the plant sells its fly ash. At Spruce Plant, mercury oxidation catalyst testing began in September 2003 and continued through the end of April 2005, interrupted only by a

  17. Structure, chemistry, and properties of mineral nanoparticles

    SciTech Connect (OSTI)

    Waychunas, G.A.; Zhang, H.; Gilbert, B.

    2008-12-02T23:59:59.000Z

    Nanoparticle properties can depart markedly from their bulk analog materials, including large differences in chemical reactivity, molecular and electronic structure, and mechanical behavior. The greatest changes are expected at the smallest sizes, e.g. 10 nm and below, where surface effects are expected to dominate bonding, shape and energy considerations. The precise chemistry at nanoparticle interfaces can have a profound effect on structure, phase transformations, strain, and reactivity. Certain phases may exist only as nanoparticles, requiring transformations in chemistry, stoichiometry and structure with evolution to larger sizes. In general, mineralogical nanoparticles have been little studied.

  18. Chemistry for Measurement and Detection Science

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamosCharacterization ofChemistry and Transport Chemistry

  19. Chemistry: Theory - Combustion Energy Frontier Research Center

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamosCharacterization ofChemistry and TransportChemistryTheory

  20. Chemistry for Measurement and Detection Science publications

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z CPlasma of theChemistry Oxide InterfacesChemistry

  1. Chemistry of Cobalt-Platinum Nanocatalysts

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z CPlasma of theChemistry OxideChemistry of

  2. Chemistry of Cobalt-Platinum Nanocatalysts

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z CPlasma of theChemistry OxideChemistry

  3. Low-temperature catalytic gasification of wet industrial wastes

    SciTech Connect (OSTI)

    Elliott, D C; Neuenschwander, G G; Baker, E G; Sealock, Jr, L J; Butner, R S

    1991-04-01T23:59:59.000Z

    Bench-scale reactor tests are in progress at Pacific Northwest Laboratory to develop a low-temperature, catalytic gasification system. The system, licensed under the trade name Thermochemical Environmental Energy System (TEES{reg sign}), is designed for treating a wide variety of feedstocks ranging from dilute organics in water to waste sludges from food processing. This report describes a test program which used a continuous-feed tubular reactor. This test program is an intermediate stage in the process development. The reactor is a laboratory-scale version of the commercial concept as currently envisioned by the process developers. An energy benefit and economic analysis was also completed on the process. Four conceptual commercial installations of the TEES process were evaluated for three food processing applications and one organic chemical manufacturing application. Net energy production (medium-Btu gas) was achieved in all four cases. The organic chemical application was found to be economically attractive in the present situation. Based on sensitivity studies included in the analysis, the three food processing cases will likely become attractive in the near future as waste disposal regulations tighten and disposal costs increase. 21 refs., 2 figs., 9 tabs.

  4. Coupled electromechanical effects in wurtzite quantum dots with wetting layers in gate controlled electric fields: The multiband case

    E-Print Network [OSTI]

    Melnik, Roderick

    Coupled electromechanical effects in wurtzite quantum dots with wetting layers in gate controlled quantifies the electromechanical effects on the band structure of wurtzite quantum dots. c Systematic study on the band structure calculations of wurtzite AlN/GaN quantum dots with wetting layers (WLs). Based

  5. Conversion of Full-Scale Wet Scrubbers to Biotrickling Filters for H2S Control at Publicly Owned Treatment Works

    E-Print Network [OSTI]

    Conversion of Full-Scale Wet Scrubbers to Biotrickling Filters for H2S Control at Publicly Owned. This paper discusses the conversion of chemical scrubbers to biological trickling filters. Initially in determining the general suitability of converting wet scrubbers to biotrickling filters were identified

  6. Critical angle of wet sandpiles T. G. Mason, A. J. Levine,* D. Ertas, and T. C. Halsey

    E-Print Network [OSTI]

    Levine, Alex J.

    with a surface roughness theory. Electron and fluorescence microscopy of the dry and wet surfaces of the grains . In this, the problem of wet sand brings to mind the problem of friction in sandpiles, a problem to which Mohr-Coulomb analysis 1 applied to cohesive sandpiles reveals that the stability criterion govern- ing

  7. At Wichita State University you may pursue a program in chemistry,

    E-Print Network [OSTI]

    of Chemistry occupies a 98,000 square- foot modern teaching and research facility. Renovated McKinley Hall materials, energy sources, pollution control devices, clean industrial resources, disease- and insect to moderate environmental chemicals and develop new energy sources for the future. Wichita State's BA degree

  8. Graduate School of Advanced Science and Engineering Department of Applied Chemistry

    E-Print Network [OSTI]

    Kaji, Hajime

    processes. Mesoscale synthesis of materials and their functions. Silicate chemistry as a branch of inorganic-organic hybrids and functional inorganic materials including ceramic materials. Development of chemical processes and their applications to materials design. Synthesis, structure, and control of functions of nanomaterials by soft

  9. Twenty-ninth ORNL/DOE conference on analytical chemistry in energy technology. Abstracts of papers

    SciTech Connect (OSTI)

    Not Available

    1986-01-01T23:59:59.000Z

    This booklet contains separate abstracts of 55 individual papers presented at this conference. Different sections in the book are titled as follows: laser techniques; resonance ionization spectroscopy; laser applications; new developments in mass spectrometry; analytical chemistry of hazardous waste; and automation and data management. (PLG)

  10. Fuel Cells and Solid State Chemistry Department August 2008 Ris National Laboratory for Sustainable Energy

    E-Print Network [OSTI]

    Fuel Cells and Solid State Chemistry Department August 2008 Risř National Laboratory 2008 2 Summary This project aimed at development and optimization of Danish SOFC stack technology and by optimization of the spacer components. Decoupling between end plates and the outermost interconnects has been

  11. OPERATIONAL WINDOWS FOR DRY-WALL AND WETTED-WALL IFE CHAMBERS

    E-Print Network [OSTI]

    Raffray, A. René

    subsystems was performed parametrically to uncover key physics/technology uncertainties and to iden- tify be necessary that may preclude propagation of the laser driver and require assisted pinch transport issue for wetted-wall concepts. KEYWORDS: inertial fusion, fusion technology, IFE chambers *E

  12. Modeling of wet gas compression in twin-screw multiphase pump

    E-Print Network [OSTI]

    Xu, Jian

    2009-05-15T23:59:59.000Z

    Fig. 1.4 Subsea multiphase pumping system in Ceiba Field, West Africa............................................................... 8 Fig. 1.5 Twin-screw pump cutaway ............................................................... 12 Fig... Page Table 1.1 Summary of subsea multiphase pumping projects............................ 9 Table 1.2 Summary of subsea wet gas compression projects ........................... 10 Table 2.1 Summary of current models for twin-screw pump...

  13. DELETERIOUS EXPANSION OF CEMENT PASTE SUBJECTED TO WET-DRY CYCLES

    E-Print Network [OSTI]

    ·I CEMENT PASTE SUBJECTED TO WET-DRY CYCLES John A. Wells*, Emmanuel K with five cements produced in different regions of Canada. Test specimens with nominal diameters of 25 mm program show that cement paste specimens exhibit significant differences in the magnitude of expansion

  14. Portable XRF and wet materials: application to dredged contaminated sediments1 from waterways2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Portable XRF and wet materials: application to dredged contaminated sediments1 from waterways2 7 ABSTRACT: The sustainable management of dredged waterway sediments requires on-site determination8 commonly used for similar applications with contaminated soil, but the high water content of dredged10

  15. An efficient scheme on wet/dry transitions for Shallow Water Equations with friction Christophe Berthona

    E-Print Network [OSTI]

    Coudière, Yves

    An efficient scheme on wet/dry transitions for Shallow Water Equations with friction Christophe discrepancy between both source terms comes from their relevance in dry regions. Indeed, the friction term the friction source terms in the shallow-water model. Such additional source terms are known to be very stiff

  16. Effect of Roughness as Determined by Atomic Force Microscopy on the Wetting Properties of PTFE Thin

    E-Print Network [OSTI]

    Drelich, Jaroslaw W.

    Engineering College of Mines and Earth Sciences University of Utah Salt Lake City, Utah 84112 and G. YAMAUCHI decreases the spreading of a non-wetting liquid on low energy solids (1­4). Similar work with high energy ratio (r a/A (da/dA) 1), a is the apparent contact angle, a is the actual area of surface

  17. 1 Mathematical Model The mass consevation equations are for wetting phase

    E-Print Network [OSTI]

    Santos, Juan

    que para el CO2 no se puede no se puede asumir que es incompresible como para la wetting phase (brine compresibilidad del CO2, y ademas de la solubilidad en brine, pero eso es harina de otro costal... Otra cosa: vos

  18. Stable isotope fractionation by thermal diffusion through partially molten wet and dry silicate rocks

    E-Print Network [OSTI]

    Bindeman, Ilya N.

    isotope redistribution by thermal diffusion leading to enrichment of light isotopes at the hot endStable isotope fractionation by thermal diffusion through partially molten wet and dry silicate 2012 Editor: T.M. Harrison Keywords: thermal diffusion hydrogen isotope separation oxygen isotopes

  19. Heat Transfer Performance of a Dry and Wet / Dry Advanced Cooling Tower Condenser

    E-Print Network [OSTI]

    Fricke, H. D.; Webster, D. J.; McIlroy, K.; Bartz, J. A.

    1981-01-01T23:59:59.000Z

    This paper describes an EPRI-funded experimental evaluation of advanced air-cooled ammonia condensers for a phase. Change dry/wet cooling system for power plants. Two condenser surfaces with different air-side augmentation were tested in an ammonia...

  20. Eos, Vol. 91, No. 29, 20 July 2010 Water and wet sediments under ice sheets

    E-Print Network [OSTI]

    Priscu, John C.

    Eos, Vol. 91, No. 29, 20 July 2010 Water and wet sediments under ice sheets can play an important role in regulating the rate of ice stream flow in Antarctica, particularly over short time scales. Indeed, the discharge of subglacial lakes has been linked to an increase in ice velocity of Byrd Glacier

  1. Production and Pressure Decline Curves for Wet Gas Sands With Closed Outer Boundaries

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    . SPE SPE 23442 Production and Pressure Decline Curves for Wet Gas Sands With Closed Outer, Richardson, TX 7S0834S36 U.5A. Telex, 730989 SPEDAL. ABSTRACT A family of pressure and production decline as gas reservoirs which produce substan- tial amounts of water together with ~as. Production of water

  2. Rheology of weakly wetted granular materials - a comparison of experimental and numerical data

    E-Print Network [OSTI]

    Ruediger Schwarze; Anton Gladkyy; Fabian Uhlig; Stefan Luding

    2014-09-12T23:59:59.000Z

    Shear cell simulations and experiments of weakly wetted particles (a few volume percent liquid binders) are compared, with the goal to understand their flow rheology. Application examples are cores for metal casting by core shooting made of sand and liquid binding materials. The experiments are carried out with a Couette-like rotating viscometer. The weakly wetted granular materials are made of quartz sand and small amounts of Newtonian liquids. For comparison, experiments on dry sand are also performed with a modified configuration of the viscometer. The numerical model involves spherical, monodisperse particles with contact forces and a simple liquid bridge model for individual capillary bridges between two particles. Different liquid content and properties lead to different flow rheology when measuring the shear stress-strain relations. In the experiments of the weakly wetted granular material, the apparent shear viscosity $\\eta_g$ scales inversely proportional to the inertial number $I$, for all shear rates. On the contrary, in the dry case, an intermediate scaling regime inversely quadratic in $I$ is observed for moderate shear rates. In the simulations, both scaling regimes are found for dry and wet granular material as well.

  3. Universal scaling of spontaneous imbibition for water-wet systems K. S. Schmid1

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    -phase Darcy model. The group is derived rigorously from the only known exact analytical solution the validity of the group by applying it to 42 published SI studies for water-oil and water-air experiments length-scales. In all cases, water was the wetting phase. Our group serves as a ``master equation'' whose

  4. Assessment of an Industrial Wet Oxidation System for Burning Waste and Low-Grade Fuels

    E-Print Network [OSTI]

    Bettinger, J.; Koppel, P.; Margulies, A.

    an assessment of wet oxidation technologies, followed by bench-scale and pilot unit testing and by eventual demonstration of the pilot unit at an industrial host site. This paper discusses the assessment conducted under the first phase of this effort, which...

  5. Analysis of uncertainties in CRAC2 calculations: wet deposition and plume rise

    SciTech Connect (OSTI)

    Ward, R.C.; Kocher, D.C.; Hicks, B.B.; Hosker, R.P. Jr.; Ku, J.Y.; Rao, K.S.

    1984-01-01T23:59:59.000Z

    We have studied the sensitivity of results from the CRAC2 computer code, which predicts health impacts from a reactor-accident scenario, to uncertainties in selected meteorological models and parameters. The sources of uncertainty examined include the models for plume rise and wet deposition and the meteorological bin-sampling procedure. An alternative plume-rise model usually had little effect on predicted health impacts. In an alternative wet-deposition model, the scavenging rate depends only on storm type, rather than on rainfall rate and atmospheric stability class as in the CRAC2 model. Use of the alternative wet-deposition model in meteorological bin-sampling runs decreased predicted mean early injuries by as much as a factor of 2 to 3 and, for large release heights and sensible heat rates, decreased mean early fatalities by nearly an order of magnitude. The bin-sampling procedure in CRAC2 was expanded by dividing each rain bin into four bins that depend on rainfall rate. Use of the modified bin structure in conjunction with the CRAC2 wet-deposition model changed all predicted health impacts by less than a factor of 2. 9 references.

  6. A model for reactive porous transport during re-wetting of hardened concrete

    E-Print Network [OSTI]

    Stockie, John

    A model for reactive porous transport during re-wetting of hardened concrete Michael Chapwanya residing in the porous concrete matrix. The main hypothesis in this model is that the reaction product hydration; Porous media; Reaction-diffusion equations; Vari- able porosity. 1. Introduction Concrete

  7. Surface phase behavior in binary polymer mixtures. III. Temperature dependence of surface enrichment and of wetting

    E-Print Network [OSTI]

    Klein, Jacob

    enrichment and of wetting A. Budkowski,a) F. Scheffold, and J. Klein Department of Materials and Interfaces model systems, surface enrichment from polymer blends has clear technological implications-same mixtures--surface enrichment characteristics of the air- surface preferred phases. In these binary pairs

  8. ASTRONOMY BIOLOGY CHEMISTRY COMPUTER-SCIENCE GEOGRAPHY MATHEMATICS PHYSICS STATISTICS

    E-Print Network [OSTI]

    Bernstein, Phil

    BIOMEDICAL-ENGINEERING ELECTRONIC- ENGINEERING ASTRONOMY BIOLOGY CHEMISTRY COMPUTER-SCIENCE GEOGRAPHY MATHEMATICS PHYSICS STATISTICS HEALTHCARE BIOMEDICAL-ENGINEERING ELECTRONIC-ENGINEERING ASTRONOMY BIOLOGY C H HEALTHCARE BIOMEDICAL-ENGINEERING ELECTRONIC-ENGINEERING ASTRONOMY BIOLOGY CHEMISTRY COMPUTER

  9. 5.301 Chemistry Laboratory Techniques, January IAP 2004

    E-Print Network [OSTI]

    Tabacco, Sarah

    2004-01-01T23:59:59.000Z

    This course is an intensive introduction to the techniques of experimental chemistry and gives first year students an opportunity to learn and master the basic chemistry lab techniques for carrying out experiments. Students ...

  10. Microfluidics for High School Chemistry Students Melissa Hemling,,

    E-Print Network [OSTI]

    Weibel, Douglas B.

    Microfluidics for High School Chemistry Students Melissa Hemling,, John A. Crooks,§ Piercen M present a laboratory experiment that introduces high school chemistry students to microfluidics while microfluidic systems using nonspecialized equipment that is available in high school classrooms and reagents

  11. Linking local air pollution to global chemistry and climate

    E-Print Network [OSTI]

    Mayer, Monika.; Wang, Chien.; Webster, Mort David.; Prinn, Ronald G.

    We have incorporated a reduced-form urban air chemistry model in MIT's 2D-LO coupled chemistry-climate model. The computationally efficient reduced-form urban model is derived from the California Institute of Technology-Carnegie ...

  12. analytical chemistry laboratory: Topics by E-print Network

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

    Websites Summary: 12;12;A BRIEF HISTORY THE ANALYTICAL CHEMISTRY DIVISION OF OAK RIDGE NATIONAL LABORATORY 1950 hiembers of the Chemistry Division R-on: J. A. Swartout In...

  13. Forrest S. Schultz, PhD Professor of Chemistry

    E-Print Network [OSTI]

    Wu, Mingshen

    to support programs in Nanoscience, Biotechnology, Computer and Electrical Engineering and Plastics with the Chemistry Department to most effectively meet the challenge of a growing demand for chemistry courses

  14. ENVIRONMENTAL CHEMISTRY AND TECHNOLOGY PROGRAM University of Wisconsin-Madison

    E-Print Network [OSTI]

    Sprott, Julien Clinton

    ­ Material damage · Ecosystem Impacts ­ Nutrients ­ Toxics · Climate Change #12;ENVIRONMENTAL CHEMISTRYENVIRONMENTAL CHEMISTRY AND TECHNOLOGY PROGRAM University of Wisconsin-Madison Optimizing University of Wisconsin-Madison #12;ENVIRONMENTAL CHEMISTRY AND TECHNOLOGY PROGRAM University of Wisconsin

  15. Cost benefits from applying advanced heat rejection concepts to a wet/dry-cooled binary geothermal plant

    SciTech Connect (OSTI)

    Faletti, D.W.

    1981-03-01T23:59:59.000Z

    Optimized ammonia heat rejection system designs were carried out for three water allocations equivalent to 9, 20, and 31% of that of a 100% wet-cooled plant. The Holt/Procon design of a 50-MWe binary geothermal plant for the Heber site was used as a design basis. The optimization process took into account the penalties for replacement power, gas turbine capital, and lost capacity due to increased heat rejection temperature, as well as added base plant capacity and fuel to provide fan and pump power to the heat rejection system. Descriptions of the three plant designs are presented. For comparison, a wet tower loop was costed out for a 100% wet-cooled plant using the parameters of the Holt/Procon design. Wet/dry cooling was found to increase the cost of electricity by 28% above that of a 100% wet-cooled plant for all three of the water allocations studied (9, 20, and 31%). The application selected for a preconceptual evaluation of the BCT (binary cooling tower) system was the use of agricultural waste water from the New River, located in California's Imperial Valley, to cool a 50-MWe binary geothermal plant. Technical and cost evaluations at the preconceptual level indicated that performance estimates provided by Tower Systems Incorporated (TSI) were reasonable and that TSI's tower cost, although 2 to 19% lower than PNL estimates, was also reasonable. Electrical cost comparisonswere made among the BCT system, a conventional 100% wet system, and a 9% wet/dry ammonia system, all using agricultural waste water with solar pond disposal. The BCT system cost the least, yielding a cost of electricity only 13% above that of a conventional wet system using high quality water and 14% less than either the conventional 100% wet or the 9% wet/dry ammonia system.

  16. Computational chemistry in Argonne`s Reactor Analysis Division

    SciTech Connect (OSTI)

    Gelbard, E.; Agrawal, R.; Fanning, T.

    1997-08-01T23:59:59.000Z

    Roughly 3 years ago work on Argonne`s Integral Fast Reactor ({open_quotes}IFR{close_quotes}) was terminated and at that time, ANL funding was redirected to a number of alternative programs. One such alternative was waste management and, since disposal of spent fuel from ANL`s EBR-II reactor presents some special problems, this seemed an appropriate area for ANL work. Methods for the treatment and disposal of spent fuel (particularly from EBR-II but also from other sources) are now under very active investigation at ANL. The very large waste form development program is mainly experimental at this point, but within the Reactor Analysis ({open_quotes}RA{close_quotes}) Division a small computational chemistry program is underway, designed to supplement the experimental program. One of the most popular proposals for the treatment of much of our high-level wastes is vitrification. As noted below, this approach has serious drawbacks for EBR-II spent fuel. ANL has proposed, instead, that spent fuel first be pretreated by a special metallurgical process which produces, as waste, chloride salts of the various fission products; these salts would then be adsorbed in zeolite A, which is subsequently bonded with glass to produce a waste form suitable for disposal. So far it has been the main mission of RA`s computational chemistry program to study the process by which leaching occurs when the glass-bonded zeolite waste form is exposed to water. It is the purpose of this paper to describe RA`s computational chemistry program, to discuss the computational techniques involved in such a program, and in general to familiarize the M. and C. Division with a computational area which is probably unfamiliar to most of its member. 11 refs., 2 figs.

  17. Phase chemistry and radionuclide retention from simulated tank sludges

    SciTech Connect (OSTI)

    KRUMHANSL,JAMES L.; LIU,J.; ARTHUR,SARA E.; HUTCHERSON,SHEILA K.; QIAN,MORRIS; ANDERSON,HOWARD L.

    2000-05-19T23:59:59.000Z

    Decommissioning high level nuclear waste tanks will leave small amounts of residual sludge clinging to the walls and floor of the structures. The permissible amount of material left in the tanks depends on the radionuclide release characteristics of the sludge. At present, no systematic process exists for assessing how much of the remaining inventory will migrate, and which radioisotopes will remain relatively fixed. Working with actual sludges is both dangerous and prohibitively expensive. Consequently, methods were developed for preparing sludge simulants and doping them with nonradioactive surrogates for several radionuclides and RCRA metals of concern in actual sludges. The phase chemistry of these mixes was found to be a reasonable match for the main phases in actual sludges. Preliminary surrogate release characteristics for these sludges were assessed by lowering the ionic strength and pH of the sludges in the manner that would occur if normal groundwater gained access to a decommissioned tank. Most of the Se, Cs and Tc in the sludges will be released into the first pulse of groundwater passing through the sludge. A significant fraction of the other surrogates will be retained indefinitely by the sludges. This prolonged sequestration results from a combination coprecipitated and sorbed into or onto relatively insoluble phases such as apatite, hydrous oxides of Fe, Al, Bi and rare earth oxides and phosphates. The coprecipitated fraction cannot be released until the host phase dissolves or recrystallizes. The sorbed fraction can be released by ion exchange processes as the pore fluid chemistry changes. However, these releases can be predicted based on a knowledge of the fluid composition and the surface chemistry of the solids. In this regard, the behavior of the hydrous iron oxide component of most sludges will probably play a dominant role for many cationic radionuclides while the hydrous aluminum oxides may be more important in governing anion releases.

  18. Safety Training Policy Virginia Tech Chemistry Department

    E-Print Network [OSTI]

    Crawford, T. Daniel

    Safety Training Policy Virginia Tech Chemistry Department Approved by the Executive Committee on 06 at specific training sessions or programs is mandatory. Tenure-track faculty members may choose their level research are exempt, as their safety training is incorporated into their laboratory courses. The first step

  19. 1999 Gordon Research Conference on Atmospheric Chemistry

    SciTech Connect (OSTI)

    Storm, C.

    2000-08-01T23:59:59.000Z

    The Gordon Research Conference (GRC) on Atmospheric Chemistry was held at Salve Regina University in Newport, Rhode Island, June 13-18, 1999. The conference was well attended with 151 participants. The attendees represented the spectrum of endeavor in this field coming from academia, industry, and government laboratories, both US and foreign scientists, senior researchers, young investigators, and students.

  20. Chemical Transport Policy Virginia Tech Chemistry Department

    E-Print Network [OSTI]

    Crawford, T. Daniel

    Chemical Transport Policy Virginia Tech Chemistry Department This policy was enacted. The purpose of this policy is to ensure the safety of personnel transporting chemicals and anyone who might be affected by a problem occurring during such transport. The policy also helps to shield stockroom personnel

  1. Spin Contamination in Inorganic Chemistry Calculations

    E-Print Network [OSTI]

    Schlegel, H. Bernhard

    R EVISED PAG E PR O O FS ia617 Spin Contamination in Inorganic Chemistry Calculations Jason L . In such cases, 0 is said to be spin contaminated owing to incorporation of higher spin state character of Iron­Sulfur ia618 Clusters). It is important to note that while spin-contaminated and broken

  2. Mathematical Review for Physical Chemistry 1. Integration

    E-Print Network [OSTI]

    Peterson, Kirk A.

    Mathematical Review for Physical Chemistry Outline: 1. Integration (a) Important Integrals (b) Tricks for evaluating integrals 2. Derivatives (a) Important derivatives (b) Tricks 3. Expansions 4 dierentials 6. Properties of Logs 7. Review of Trigonometry 1 Integration: 1.1 Integrals you should know: 1

  3. Environmental Analytical Chemistry (ENERGY, POWER AND ENVIRONMENT)

    E-Print Network [OSTI]

    Sherrill, David

    /or irrational emotions rather than by the sound scientific principles. Since its large-scale introduction half using sound scientific principles. Chemistry occupies central position in discussion of any production sites (movie: Hanford today) 11/2-4 Nuclear Energy production (civilian); Safe reactor designs 11

  4. CHEM 4170, Medicinal Chemistry University of Missouri

    E-Print Network [OSTI]

    Gates, Kent. S.

    CHEM 4170, Medicinal Chemistry University of Missouri Computer Graphics Visualization of Proteins "pockets" or "clefts" on the surface of their macromolecular targets. A favorable free energy of binding the best way to visualize these structures is using computer graphics. In this assignment, we will use

  5. 128 Department of Chemistry Graduate Catalogue 201415

    E-Print Network [OSTI]

    on nanocapsules, nanocrystals, curcurmin and PAHs for physical and biophysical studies; fluorescence sensing in physical and biophysical chemistry; new methods for depollution of water contaminated by organic pollutants for the degradation of pesticides and chlorinated organic compounds in water; renewable energy, biosensing

  6. Adam D. McFarland Chemistry Department

    E-Print Network [OSTI]

    Janssen, Michel

    Involving Sulfur Compounds@ 2001 M.S., Chemistry, Northwestern University, Evanston, IL 2004 Ph Northwestern University, Department of Materials Science. Present Design and Construction of a low temperature optical ultra-high vacuum scanning tunneling microscope. 1999-2004 Teaching Assistant Northwestern

  7. The Influence of Chemistry, Production and Community

    E-Print Network [OSTI]

    and their interaction on leaf litter chemistry and decomposition in pure stands of aspen (Populus tremuloides) and mixed stands of birch (Betula pa- pyrifera) and aspen at the Aspen Free Air CO2 Enrichment (FACE) experiment in the second year. For aspen litter but not mixed birch-aspen litter, decomposition rates were negatively

  8. Ice chemistry in starless molecular cores

    E-Print Network [OSTI]

    Kalvans, Juris

    2015-01-01T23:59:59.000Z

    Starless molecular cores are natural laboratories for interstellar molecular chemistry research. The chemistry of ices in such objects was investigated with a three-phase (gas, surface, and mantle) model. We considered the center part of five starless cores, with their physical conditions derived from observations. The ice chemistry of oxygen, nitrogen, sulfur, and complex organic molecules (COMs) was analyzed. We found that an ice-depth dimension, measured, e.g., in monolayers, is essential for modeling of chemistry in interstellar ices. Particularly, the H2O:CO:CO2:N2:NH3 ice abundance ratio regulates the production and destruction of minor species. It is suggested that photodesorption during core collapse period is responsible for high abundance of interstellar H2O2 and O2H, and other species synthesized on the surface. The calculated abundances of COMs in ice were compared to observed gas-phase values. Smaller activation barriers for CO and H2CO hydrogenation may help explain the production of a number of...

  9. Chemistry 180, Section 1 Spring 2014

    E-Print Network [OSTI]

    Nickrent, Daniel L.

    -mail: mmccarroll@chem.siu.edu Text Beer: Tap into the Art and Science of Brewing By Charles Bamforth Oxford 218 Course Description The course covers the science and chemistry of beer and brewing. The history of beer and brewing will be introduced to follow the evolution of beer as a food and beverage, including

  10. Chemistry 181, Section 1 Spring 2014

    E-Print Network [OSTI]

    Nickrent, Daniel L.

    to CHEM 180, The Chemistry of Beer and Brewing. The laboratory will cover various aspects of beer of the various style categories of beer, using the Beer Judge Certificate Program (BJCP) Style Guideline, working in brewing beer from base ingredients using common homebrewing techniques and laboratory scale experiments

  11. Exploring Tuning Strategies for Quantum Chemistry Computations

    E-Print Network [OSTI]

    Sosonkina, Masha

    to an efficient execution. General Atomic and Molecular Electronic Structure (GAMESS), used for ab-initio molecular quantum chemistry calculations, uses NICAN for dynamically making adaptations so as to improve calculations. These calculations include a wide range of Hartree-Fock (HF) wave function (RHF, ROHF, UHF, GVB

  12. Chemistry and Society December 16, 2011

    E-Print Network [OSTI]

    Viola, Ronald

    Chemistry and Society Final Exam December 16, 2011 Answer all multiple choice questions (Part I energy content per gram? A. gasoline B. propane C. hard coal D. hydrogen 3. Which of the following chains 14. A higher octane rating means smoother burning gasoline. Octane rating is increased by: A

  13. 1Fractions and Chemistry Because molecules and

    E-Print Network [OSTI]

    1Fractions and Chemistry Because molecules and atoms come in 'integer' packages, the ratios of gasoline (ethane) are combined with 7 molecules of oxygen you get 4 molecules of carbon dioxide and 6;1 Answer Key Problem 1 - What makes your car go: When 2 molecules of gasoline (ethane) are combined with 7

  14. UNIVERSITY OF CALIFORNIA, SANTA CRUZ DEPARTMENT OF CHEMISTRY AND BIOCHEMISTRY

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    in Chemistry or a related field and at least one year of additional research training such as postdoctoral

  15. Special Topics in Organic Chemistry Biorenewable Polymers 8833

    E-Print Network [OSTI]

    Sherrill, David

    Biorefinery b. Pretreatment Chemistry Lignocellulosics c. SSF/CBP Conversion of Biomass to BioEthanol d. Third

  16. Department of Chemistry | Center for Catalytic HydrocarbonFunctionali...

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

    Chemistry Faculty & Research Outreach Programs Graduate Studies Events & Seminars Undergraduate Studies Contact Us Faculty & Research > Research Centers & Programs > Center for...

  17. Elucidation of the inorganic chemistry of hydrotreating catalysts

    SciTech Connect (OSTI)

    DeCanio, E.C.; Edwards, J.C.; Storm, D.A. [Texaco, Inc., Beacon, NY (United States); Bruno, J.W. [Wesleyan Univ., Middletown, CT (United States)

    1993-12-31T23:59:59.000Z

    New environmental regulations are making it necessary to developed improved hydrotreating catalysts for the removal of sulfur, nitrogen and aromatics from refinery streams. In order to develop better catalysts, the authors must gain a more detailed understanding of the inorganic chemistry of these catalysts. Commercial catalysts typically contain ca. 15 wt% molybdenum or tungsten oxides and ca. 4 wt% nickel or cobalt. Additives, such as phosphate and fluoride, are often added to improve the catalytic activity. However, the role of these additives is not fully understood. The authors have, therefore, carried out studies on alumina supported phosphate and flouride materials using FT-IR, powder x-ray diffraction, and solid-state NMR ({sup 31}P, {sup 27}Al, and {sup 1}H). The results of this work have enabled the authors to determine the structures of the various compounds formed on the alumina system when fluoride or phosphate is present.

  18. Supramolecular Chemistry DOI: 10.1002/anie.200905460

    E-Print Network [OSTI]

    Angewandte Chemie Supramolecular Chemistry DOI: 10.1002/anie.200905460 Porous Capsules {(M)M5}12FeIII 30 (M = MoVI , WVI ): Sphere Surface Supramolecular Chemistry with 20 Ammonium Ions, Related Solution materials scientific aspects;[1] for general aspects of the chemistry, see referen- ces [1­3d

  19. School of Chemistry FACULTY OF MATHEMATICS AND PHYSICAL SCIENCES

    E-Print Network [OSTI]

    Rzepa, Henry S.

    School of Chemistry FACULTY OF MATHEMATICS AND PHYSICAL SCIENCES CHEMISTRYPOSTGRADUATE MASTERS DEGREES #12;WWW.CHEM.LEEDS.AC.UK 02 School of Chemistry // MASTERS PROGRAMMES contents 03 Welcome 04 Study and Accommodation 19 Visit Us #12;SCHOOLOFCHEMISTRY 03 Welcome to the School of Chemistry The School warmly welcomes

  20. Course Syllabus: Chem W1A General Chemistry Course Information

    E-Print Network [OSTI]

    Alvarez-Cohen, Lisa

    Course Syllabus: Chem W1A General Chemistry Course Information Course Number Chemistry W1A Course) Themed Problems.3. Participation in the discussion forums.4. Chem W1A General Chemistry Syllabus https Syllabus https://elearning.berkeley.edu/AngelUploads/Content/2013SUC... 2 of 10 5/28/13 10:13 AM #12;We

  1. INTERNATIONAL PERCEPTIONS OF THE UK CHEMISTRY RESEARCH BASE

    E-Print Network [OSTI]

    Medical Research Council INTERNATIONAL PERCEPTIONS OF THE UK CHEMISTRY RESEARCH BASE Chemistry advances in many areas. Chemistry research underpins a wide range of activities that benefit society also thank our colleagues from the Medical Research Council (MRC), the Biotechnology and Biological

  2. CHEMISTRY COURSE OFFERINGS, FALL, 2013 (Updated 8/1/13)

    E-Print Network [OSTI]

    Kounaves, Samuel P.

    in Chemistry 61. Techniques in synthesis, spectroscopy, and reactivity studies. Applications of inorganic compounds in synthesis, catalysis, materials sciences, and biology. One laboratory, one lecture, one and chemistry of materials. Three lectures, one laboratory, one recitation. Only one of Chemistry 1, 11, or 16

  3. Chemistry at IIT: Where Can It Take You?

    E-Print Network [OSTI]

    Heller, Barbara

    Chemistry at IIT: Where Can It Take You? CCHEMISTRY CCHEMISTRY To Learn More and How To Apply http://www.iit.edu/csl/pathways/ Undergraduate Admissions: http://www.iit.edu/undergrad_admission/ 800.448.2329 The IIT Legacy in Chemistry opportunities, help you steer your course. The IIT chemistry program is approved by the American Chemical

  4. Chemistry B.S. Fall--First Year

    E-Print Network [OSTI]

    Gering, Jon C.

    Chemistry B.S. Fall--First Year · CHEM 130 Chemical Principles I* · CHEM 145 Freshman Seminar · CHEM 222 Intro to Quant Analysis · CHEM 245 Sophomore Seminar · CHEM 329 Organic Chemistry I · MATH 264 Calculus III · LSP coursework Fall--Third Year · CHEM 345 Junior Seminar · CHEM 323/324 Physical Chemistry

  5. Ris National Laboratory Fuel Cells and Solid State Chemistry Department

    E-Print Network [OSTI]

    Risø National Laboratory Postprint Fuel Cells and Solid State Chemistry Department Year 2007 Paper Højgaard Jensen1, Jørgen B. Bilde-Sørensen3, Mogens Mogensen1 1Fuel Cells and Solid State Chemistry-Sørensen3 , Mogens Mogensen1 1 Fuel Cells and Solid State Chemistry Department, Risø National Laboratory

  6. Interfacial chemistry and structure in ceramic composites

    SciTech Connect (OSTI)

    Jones, R.H.; Saenz, N.T.; Schilling, C.H.

    1990-09-01T23:59:59.000Z

    The interfacial chemistry and structure of ceramic matrix composites (CMCs) play a major role in the properties of these materials. Fiber-matrix interfaces chemistries are vitally important in the fracture strength, fracture toughness, and fracture resistance of ceramic composites because they influence fiber loading and fiber pullout. Elevated-temperature properties are also linked to the interfacial characteristics through the chemical stability of the interface in corrosive environments and the creep/pullout behavior of the interface. Physical properties such as electrical and thermal conductivity are also dependent on the interface. Fiber-matrix interfaces containing a 1-{mu}m-thick multilayered interface with amorphous and graphitic C to a 1-nm-thick SiO{sub 2} layer can result from sintering operations for some composite systems. Fibers coated with C, BN, C/BC/BN, and Si are also used to produce controlled interface chemistries and structures. Growth interfaces within the matrix resulting from processing of CMCs can also be crucial to the behavior of these materials. Evaluation of the interfacial chemistry and structure of CMCs requires the use of a variety of analytical tools, including optical microscopy, scanning electron microscopy, Auger electron spectroscopy, and transmission electron microscopy coupled with energy dispersive x-ray analysis. A review of the interfacial chemistry and structure of SiC whisker- and fiber-reinforced Si{sub 3}N{sub 4} and SiC/SiC materials is presented. Where possible, correlations with fracture properties and high-temperature stability are made. 94 refs., 10 figs.

  7. Chemistry Division annual progress report for period ending July 31, 1981

    SciTech Connect (OSTI)

    Not Available

    1982-01-01T23:59:59.000Z

    Research is reported on: chemistry of coal liquefaction, aqueous chemistry at high temperatures, geosciences, high-temperature chemistry and thermodynamics of structural materials, chemistry of TRU elements and compounds, separations chemistry, electrochemistry, nuclear waste chemistry, chemical physics, theoretical chemistry, inorganic chemistry of hydrogen cycles, molten salt systems, and enhanced oil recovery. Separate abstracts were prepared for the sections dealing with coal liquefaction, TRU elements and compounds, separations, nuclear wastes, and enhanced oil recovery. (DLC)

  8. Aromatic-radical oxidation chemistry

    SciTech Connect (OSTI)

    Glassman, I.; Brezinsky, K. [Princeton Univ., NJ (United States)

    1993-12-01T23:59:59.000Z

    The research effort has focussed on discovering an explanation for the anomalously high CO{sub 2} concentrations observed early in the reaction sequence of the oxidation of cyclopentadiene. To explain this observation, a number of plausible mechanisms have been developed which now await experimental verification. One experimental technique for verifying mechanisms is to probe the reacting system by perturbing the radical concentrations. Two forms of chemical perturbation of the oxidation of cyclopentadiene were begun during this past year--the addition of NO{sub 2} and CO to the reacting mixture.

  9. Tree-ring growth and wood chemistry response to manipulated precipitation variation for two temperate Quercus species

    SciTech Connect (OSTI)

    Wagner, Rebekah J. [Pennsylvania State University, University Park, PA; Kaye, Margot W. [Pennsylvania State University, University Park, PA; Abrams, Marc D. [Pennsylvania State University, University Park, PA; Hanson, Paul J [ORNL; Martin, Madhavi Z [ORNL

    2012-01-01T23:59:59.000Z

    We examined the relationship among ambient and manipulated precipitation, wood chemistry, and their relationship with radial growth for two oak species in eastern Tennessee. The study took place on the Walker Branch Throughfall Displacement Experiment (TDE) site, located at the Oak Ridge National Laboratory in Oak Ridge, TN. Two dominant species, white oak (Quercus alba) and chestnut oak (Quercus prinus), were selected for study from a 13-year experiment of whole-stand precipitation manipulation (wet, ambient and dry). The relationships between tree-ring width and climate were compared for both species to determine the impact of precipitation manipulations on ring width index. This study used experimental spectroscopy techniques to measure the sensitivity of tree-ring responses to directional changes in precipitation over 13 years, and the results suggest that oaks at this study site are resilient to imposed changes, but sensitive to inter-annual variations in climate. Laser-induced breakdown spectroscopy (LIBS) allowed us to measure nutrient intensities (similar to element concentrations) at 0.5-1.0 mm spacing along the radial growth axis of trees growing in the wet, ambient, and dry treatment sites. A difference in stemwood nutrient levels was observed between the two oak species and among the three treatments. Significant variation in element intensity was observed across treatments for some elements (Ca, K, Mg, Na, N and P) suggesting the potential for long-term impacts on growth under a changing climate regimes for southeastern oaks.

  10. Chemistry Division annual progress report for period ending January 31, 1986

    SciTech Connect (OSTI)

    Not Available

    1986-05-01T23:59:59.000Z

    This report has been indexed by 11 separate chapters. The subjects covered are: coal chemistry, aqueous chemistry at high temperatures and pressures, geochemistry, materials chemistry, chemistry of transuranium elements and compounds, separations chemistry, catalysis, electron spectroscopy, nuclear waste chemistry, heuristic modeling, and special topics. (PLG)

  11. Lon A. Porter, Jr., Ph.D. Assistant Professor of Chemistry

    E-Print Network [OSTI]

    Porter Jr., Lon A.

    Nanotechnology, Industrial Inorganic Chemistry, Materials Chemistry, Forensic Chemistry, and Chemistry, Business in the synthesis of exotic new materials and utilization of cutting edge fabrication/characterization methods Fellowship · Graduated in August 2003 with a Ph. D. in inorganic chemistry, as related to inorganic chemistry

  12. Field Testing of a Wet FGD Additive for Enhanced Mercury Control - Pilot-Scale Test Results

    SciTech Connect (OSTI)

    Gary M. Blythe

    2006-03-01T23:59:59.000Z

    This Topical Report summarizes progress on Cooperative Agreement DE-FC26-04NT42309, ''Field Testing of a Wet FGD Additive.'' The objective of the project is to demonstrate the use of a flue gas desulfurization (FGD) additive, Degussa Corporation's TMT-15, to prevent the reemissions of elemental mercury (Hg{sup 0}) in flue gas exiting wet FGD systems on coal-fired boilers. Furthermore, the project intends to demonstrate that the additive can be used to precipitate most of the mercury (Hg) removed in the wet FGD system as a fine TMT salt that can be separated from the FGD liquor and bulk solid byproducts for separate disposal. The project will conduct pilot and full-scale tests of the TMT-15 additive in wet FGD absorbers. The tests are intended to determine required additive dosage requirements to prevent Hg{sup 0} reemissions and to separate mercury from the normal FGD byproducts for three coal types: Texas lignite/Power River Basin (PRB) coal blend, high-sulfur Eastern bituminous coal, and low-sulfur Eastern bituminous coal. The project team consists of URS Group, Inc., EPRI, TXU Generation Company LP, Southern Company, and Degussa Corporation. TXU Generation has provided the Texas lignite/PRB co-fired test site for pilot FGD tests, Monticello Steam Electric Station Unit 3. Southern Company is providing the low-sulfur Eastern bituminous coal host site for wet scrubbing tests, as well as the pilot and full-scale jet bubbling reactor (JBR) FGD systems to be tested. A third utility, to be named later, will provide the high-sulfur Eastern bituminous coal full-scale FGD test site. Degussa Corporation is providing the TMT-15 additive and technical support to the test program. The project is being conducted in six tasks. Of the six project tasks, Task 1 involves project planning and Task 6 involves management and reporting. The other four tasks involve field testing on FGD systems, either at pilot or full scale. The four tasks include: Task 2 - Pilot Additive Testing in Texas Lignite Flue Gas; Task 3 - Full-scale FGD Additive Testing in High Sulfur Eastern Bituminous Flue Gas; Task 4 - Pilot Wet Scrubber Additive Tests at Yates; and Task 5 - Full-scale Additive Tests at Plant Yates. This topical report presents the results from the Task 2 and Task 4 pilot-scale additive tests. The Task 3 and Task 5 full-scale additive tests will be conducted later in calendar year 2006.

  13. Radiation chemistry of alternative fuel oxygenates -- Substituted ethers

    SciTech Connect (OSTI)

    Mezyk, S. P.; Cooper, W. J.; Bartels, D. M.; Tobien, T.; O'Shea, K. E.

    1999-11-15T23:59:59.000Z

    The electron beam process, an advanced oxidation and reduction technology, is based in the field of radiation chemistry. Fundamental to the development of treatment processes is an understanding of the underlying chemistry. The authors have previously evaluated the bimolecular rate constants for the reactions of methyl tert-butyl ether (MTBE) and with this study have extended their studies to include ethyl tert-butyl ether (ETBE), di-isopropyl ether (DIPE) and tert-amyl methyl ether (TAME) with the hydroxyl radical, hydrogen atom and solvated electron using pulse radiolysis. For all of the oxygenates the reaction with the hydroxyl radical appears to be of primary interest in the destruction of the compounds in water. The rates with the solvated electron are limiting values as the rates appear to be relatively low. The hydrogen atom rate constants are relatively low, coupled with the low yield in radiolysis, they concluded that these are of little significance in the destruction of the alternative fuel oxygenates (and MTBE).

  14. Submitted to the Journal of the American Water Resources Association Potential Human Health Effects Associated with Pathogens in Urban Wet Weather Flows

    E-Print Network [OSTI]

    Pitt, Robert E.

    Effects Associated with Pathogens in Urban Wet Weather Flows Robert Pitt1 , Melinda Lalor2 , and John stormwater conveyance systems, or wet weather sewage overflows, may adversely impact many of the desired uses. Urban runoff or wet weather flows include not only precipitation and washoff from lawns and landscaped

  15. Wetting of Sodium on ??-Al2O3/YSZ Composites for Low Temperature Planar Sodium-Metal Halide Batteries

    SciTech Connect (OSTI)

    Reed, David M.; Coffey, Greg W.; Mast, Eric S.; Canfield, Nathan L.; Mansurov, Jirgal; Lu, Xiaochuan; Sprenkle, Vincent L.

    2013-04-01T23:59:59.000Z

    Wetting of Na on B”-Al2O3/YSZ composites was investigated using the sessile drop technique. The effects of moisture and surface preparation were studied at low temperatures. Electrical conductivity of Na/B”-Al2O3-YSZ/Na cells was also investigated at low temperatures and correlated to the wetting behavior. The use of planar B”-Al2O3 substrates at low temperature with low cost polymeric seals is realized due to improved wetting at low temperature and conductivity values consistent with the literature.

  16. Audit of wet gas processing at Chevron's McKittrick Plant, Naval Petroleum Reserve No. 1, Elk Hills, California

    SciTech Connect (OSTI)

    Not Available

    1987-04-10T23:59:59.000Z

    The purpose of the audit was to determine if: (1) volumes of wet gas delivered to the McKittrick plant were properly calculated and reported; (2) processing fees paid to Chevron conformed to contract provisions; (3) wet gas processing at Chevron's facility was economical; and (4) controls over natural gas liquid sales were adequate. Our review showed that there were weaknesses in internal controls, practices and procedures regarding the Department's management of the wet gas which is processed by Chevron under contract to the Reserve. The findings, recommendations and management comments are synopsized in the Executive Summary.

  17. Excerpted from: R. Pitt, M. Lilburn. S.R. Durrans, S. Burian, S. Nix, J. Vorhees, and J. Martinson (I had a lot of help from my friends). Guidance Manual for Integrated Wet Weather Flow (WWF) Collection and Treatment

    E-Print Network [OSTI]

    Pitt, Robert E.

    . Martinson (I had a lot of help from my friends). Guidance Manual for Integrated Wet Weather Flow (WWF.....................................................................................................................................7 Wet Weather Flow Management: Lessons Learned from the Past

  18. Enhanced Control of PWR Primary Coolant Water Chemistry Using Selective Separation Systems for Recovery and Recycle of Enriched Boric Acid

    SciTech Connect (OSTI)

    Ken Czerwinski; Charels Yeamans; Don Olander; Kenneth Raymond; Norman Schroeder; Thomas Robison; Bryan Carlson; Barbara Smit; Pat Robinson

    2006-02-28T23:59:59.000Z

    The objective of this project is to develop systems that will allow for increased nuclear energy production through the use of enriched fuels. The developed systems will allow for the efficient and selective recover of selected isotopes that are additives to power water reactors' primary coolant chemistry for suppression of corrosion attack on reactor materials.

  19. Wet to dry crossover and a flow vortex-lattice in active nematics

    E-Print Network [OSTI]

    Doostmohammadi, Amin; Thampi, Sumesh P; Yeomans, Julia M

    2015-01-01T23:59:59.000Z

    Active systems, from bacterial suspensions to vibrated granular matter, are continuously driven out of equilibrium by local injection of energy from their constituent elements. The energy input leads to exotic behaviour such as collective motion, pattern formation, topological defects and active turbulence, but theories that link the different manifestations of activity across systems and length scales are lacking. Here we unify two different classes of active matter by using friction as a control parameter to interpolate between wet active systems, whose behaviour is dominated by hydrodynamics, and dry active matter where any flow is screened. At the wet-dry crossover, we find a novel lattice of flow vortices interleaved with an ordered network of topological defects which arises from the competition between friction and viscous dissipation. Our results contribute to understanding the physics of matter operating out-of-equilibrium, with its potential in the design of active micro- and nano-machines.

  20. Wet to dry crossover and a flow vortex-lattice in active nematics

    E-Print Network [OSTI]

    Amin Doostmohammadi; Michael Adamer; Sumesh P. Thampi; Julia M. Yeomans

    2015-05-15T23:59:59.000Z

    Active systems, from bacterial suspensions to vibrated granular matter, are continuously driven out of equilibrium by local injection of energy from their constituent elements. The energy input leads to exotic behaviour such as collective motion, pattern formation, topological defects and active turbulence, but theories that link the different manifestations of activity across systems and length scales are lacking. Here we unify two different classes of active matter by using friction as a control parameter to interpolate between wet active systems, whose behaviour is dominated by hydrodynamics, and dry active matter where any flow is screened. At the wet-dry crossover, we find a novel lattice of flow vortices interleaved with an ordered network of topological defects which arises from the competition between friction and viscous dissipation. Our results contribute to understanding the physics of matter operating out-of-equilibrium, with its potential in the design of active micro- and nano-machines.

  1. Notes on the efficacy of wet versus dry screening of fly ash

    SciTech Connect (OSTI)

    Valentim, B.; Hower, J.C.; Flores, D.; Guedes, A. [Center and Department of Geology, Oporto (Portugal)

    2008-08-15T23:59:59.000Z

    The methodology used to obtain fly ash subsamples of different sizes is generally based on wet or dry sieving methods. However, the worth of such methods is not certain if the methodology applied is not mentioned in the analytical procedure. After performing a fly ash mechanical dry, sieving, the authors compared those results with the ones obtained by laser diffraction on the same samples and found unacceptable discrepancies. A preliminary, study of a wet sieving analysis carried out on an economizer fly ash sample showed that this method was more effective than the dry sieving. The importance of standardizing the way samples are handled, pretreated and presented to the instrument of analysis are suggested and interlaboratory reproducibility trials are needed to create a common standard methodology to obtain large amounts of fly ash size fraction subsamples.

  2. Dynamic Imaging of Au-nanoparticles via Scanning Electron Microscopy in a Graphene Wet Cell

    E-Print Network [OSTI]

    Wayne Yang; Yuning Zhang; Michael Hilke; Walter Reisner

    2015-06-10T23:59:59.000Z

    High resolution nanoscale imaging in liquid environments is crucial for studying molecular interactions in biological and chemical systems. In particular, electron microscopy is the gold-standard tool for nanoscale imaging, but its high-vacuum requirements make application to in-liquid samples extremely challenging. Here we present a new graphene based wet cell device where high resolution SEM (scanning electron microscope) and Energy Dispersive X-rays (EDX) analysis can be performed directly inside a liquid environment. Graphene is an ideal membrane material as its high transparancy, conductivity and mechanical strength can support the high vacuum and grounding requirements of a SEM while enabling maximal resolution and signal. In particular, we obtain high resolution (graphene wet cell and EDX analysis of nanoparticle composition in the liquid enviornment. Our obtained resolution surpasses current conventional silicon nitride devices imaged in both SEM and TEM under much higher electron doses.

  3. Environmental aspects of alternative wet technologies for producing energy/fuel from peat. Final report

    SciTech Connect (OSTI)

    Smith, R.T.

    1981-05-01T23:59:59.000Z

    Peat in situ contains up to 90% moisture, with about 50% of this moisture trapped as a colloidal gel. This colloidal moisture cannot be removed by conventional dewatering methods (filter presses, etc.) and must be removed by thermal drying, solvent extraction, or solar drying before the peat can be utilized as a fuel feedstock for direct combustion or gasification. To circumvent the drying problem, alternative technologies such as wet oxidation, wet carbonization, and biogasification are possible for producing energy or enhanced fuel from peat. This report describes these three alternative technologies, calculates material balances for given raw peat feed rates of 1000 tph, and evaluates the environmental consequences of all process effluent discharges. Wastewater discharges represent the most significant effluent due to the relatively large quantities of water removed during processing. Treated process water returned to the harvested bog may force in situ, acidic bog water into recieving streams, disrupting local aquatic ecosystems.

  4. Chemistry of heavy ion reactions

    SciTech Connect (OSTI)

    Hoffman, D.C.

    1988-10-01T23:59:59.000Z

    The use of heavy ions to induce nuclear reactions was reported as early as 1950. Since that time it has been one of the most active areas of nuclear research. Intense beams of ions as heavy as uranium with energies high enough to overcome the Coulomb barriers of even the heaviest elements are available. The wide variety of possible reactions gives rise to a multitude of products which have been studied by many ingenious chemical and physical techniques. Chemical techniques have been of special value for the separation and unequivocal identification of low yield species from the plethora of other nuclides present. Heavy ion reactions have been essential for the production of the trans-Md elements and a host of new isotopes. The systematics of compound nucleus reactions, transfer reactions, and deeply inelastic reactions have been elucidated using chemical techniques. A review of the variety of chemical procedures and techniques which have been developed for the study of heavy ion reactions and their products is given. Determination of the chemical properties of the trans-Md elements, which are very short-lived and can only be produced an ''atom-at-a-time'' via heavy ion reactions, is discussed. 53 refs., 19 figs.

  5. Study of the effect of seasonal desiccation and wetting on the strength of highway subgrade soils

    E-Print Network [OSTI]

    Biswas, Bhupati Ranjan

    1962-01-01T23:59:59.000Z

    for possible deteriora- tion of soil strength due to cyolic drying and wetting. Likewise the test procedure (28) used by the Kansas State Highway Commission provides for saturation ranging from a few minutes to two weeks, depending on the density... (il, ). East Pakistan can be divided into three broad geological divisions: (a) the deltaic coastal areas; (b) the broad alluvial valleys of the Ganges and Brahmaputra Rivers through the central, western and northern portion of the country; and (c...

  6. ,"Pennsylvania Natural Gas, Wet After Lease Separation Proved Reserves (Billion Cubic Feet)"

    U.S. Energy Information Administration (EIA) 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS Codes; Column: Energy Sources andPlant Liquids,+ Lease Condensate ProvedGas, Wet After Lease Separation

  7. International symposium on oilfield chemistry: Proceedings

    SciTech Connect (OSTI)

    NONE

    1995-11-01T23:59:59.000Z

    This volume contains 66 papers presented at the symposium related to the following topics in oil field chemistry: waste treatment of produced waters; methods for enhanced recovery of petroleum (mainly surfactants, polymers, and carbon dioxide injection); cement hydration and additives; drilling fluid stability; paraffin deposition in wells and pipelines; scale control and corrosion inhibitors; displacement fluid wettability and environmental transport; fracturing fluids; formation damage; asphaltene removal; and plugging agents. All papers have been processed separately for inclusion on the data base.

  8. The Chemistry of Flammable Gas Generation

    SciTech Connect (OSTI)

    ZACH, J.J.

    2000-10-30T23:59:59.000Z

    The document collects information from field instrumentation, laboratory tests, and analytical models to provide a single source of information on the chemistry of flammable gas generation at the Hanford Site. It considers the 3 mechanisms of formation: radiolysis, chemical reactions, and thermal generation. An assessment of the current models for gas generation is then performed. The results are that the various phenomena are reasonably understood and modeled compared to field data.

  9. CHEMISTRY 3311, Fall 1998 Professor Walba

    E-Print Network [OSTI]

    Walba, David

    Name: -1- CHEMISTRY 3311, Fall 1998 Professor Walba Third Hour Exam November 19, 1998 scores: 1) 2) 3) 4) PLEASE read the questions carefully! This is a closed-book "open model" exam. You may use for scratch. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

  10. CHEMISTRY 3311, Fall 2000 Professor Walba

    E-Print Network [OSTI]

    Walba, David

    Name: -1- CHEMISTRY 3311, Fall 2000 Professor Walba Third Hour Exam November 16, 2000 scores: 1) 2) 3) 4) PLEASE read the questions carefully! This is a closed-book "open model" exam. You may use for scratch. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

  11. CHEMISTRY 3311, Fall 2000 Professor Walba

    E-Print Network [OSTI]

    Walba, David

    Name: -1- CHEMISTRY 3311, Fall 2000 Professor Walba Second Hour Exam October 26, 2000 scores: 1) 2) 3) 4) PLEASE read the questions carefully! This is a closed-book "open model" exam. You may use for scratch. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

  12. On atomic structure of Ge huts growing on the Ge/Si(001) wetting layer

    SciTech Connect (OSTI)

    Arapkina, Larisa V.; Yuryev, Vladimir A. [A. M. Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991 (Russian Federation)] [A. M. Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991 (Russian Federation)

    2013-09-14T23:59:59.000Z

    Structural models of growing Ge hut clusters—pyramids and wedges—are proposed on the basis of data of recent STM investigations of nucleation and growth of Ge huts on the Si(001) surface in the process of molecular beam epitaxy. It is shown that extension of a hut base along <110> directions goes non-uniformly during the cluster growth regardless of its shape. Growing pyramids, starting from the second monolayer, pass through cyclic formation of slightly asymmetrical and symmetrical clusters, with symmetrical ones appearing after addition of every fourth monolayer. We suppose that pyramids of symmetrical configurations composed by 2, 6, 10, etc., monolayers over the wetting layer are more stable than asymmetrical ones. This might explain less stability of pyramids in comparison with wedges in dense arrays forming at low temperatures of Ge deposition. Possible nucleation processes of pyramids and wedges on wetting layer patches from identical embryos composed by 8 dimers through formation of 1 monolayer high 16-dimer nuclei different only in their symmetry is discussed. Schematics of these processes are presented. It is concluded from precise STM measurements that top layers of wetting layer patches are relaxed when huts nucleate on them.

  13. Inorganic Chemistry Solutions to Semiconductor Nanocrystal Problems

    SciTech Connect (OSTI)

    Alvarado, Samuel R. [Ames Laboratory; Guo, Yijun [Ames Laboratory; Ruberu, T. Purnima A. [Ames Laboratory; Tavasoli, Elham [Ames Laboratory; Vela, Javier [Ames Laboratory

    2014-03-15T23:59:59.000Z

    The optoelectronic and chemical properties of semiconductor nanocrystals heavily depend on their composition, size, shape and internal structure, surface functionality, etc. Available strategies to alter these properties through traditional colloidal syntheses and ligand exchange methods place a premium on specific reaction conditions and surfactant combinations. In this invited review, we apply a molecular-level understanding of chemical precursor reactivity to reliably control the morphology, composition and intimate architecture (core/shell vs. alloyed) of semiconductor nanocrystals. We also describe our work aimed at achieving highly selective, low-temperature photochemical methods for the synthesis of semiconductor–metal and semiconductor–metal oxide photocatalytic nanocomposites. In addition, we describe our work on surface modification of semiconductor nanocrystal quantum dots using new approaches and methods that bypass ligand exchange, retaining the nanocrystal's native ligands and original optical properties, as well as on spectroscopic methods of characterization useful in determining surface ligand organization and chemistry. Using recent examples from our group and collaborators, we demonstrate how these efforts have lead to faster, wider and more systematic application of semiconductor nanocrystal-based materials to biological imaging and tracking, and to photocatalysis of unconventional substrates. We believe techniques and methods borrowed from inorganic chemistry (including coordination, organometallic and solid state chemistry) have much to offer in reaching a better understanding of the synthesis, functionalization and real-life application of such exciting materials as semiconductor nanocrystals (quantum dots, rods, tetrapods, etc.).

  14. Apollo 15 yellow impact glasses: Chemistry, petrology, and exotic origin

    SciTech Connect (OSTI)

    Delano, J.W.; Lindsley, D.H.; Ma, M.; Schmitt, R.A.

    1982-11-15T23:59:59.000Z

    The Apollo 15 yellow impact glasses are characterized by moderate TiO/sub 2/ (approx.4.8%) and high abundances of the large ion lithophile elements (e.g., K, P, Hf, Th, REE). Since the chemistry of these glasses cannot be duplicated by any combination of local components presently known to occur at the Apollo 15 landing site, these yellow glasses seem to be exotic to that area. Chemical and petrologic constraints suggest that these samples were produced by impact melting of an immature mare regolith developed upon an unusual variety of mare basalt. We speculate that the target basalt were the youngest lava flows known to exist on the moon (i.e., Eratosphenian-age lavas in Oceanus Procellarum and Mare Imbrium). Specific tests are proposed for evaluating this provocative hypothesis.

  15. Overview of actinide chemistry in the WIPP

    SciTech Connect (OSTI)

    Borkowski, Marian [Los Alamos National Laboratory; Lucchini, Jean - Francois [Los Alamos National Laboratory; Richmann, Michael K [Los Alamos National Laboratory; Reed, Donald T [Los Alamos National Laboratory; Khaing, Hnin [Los Alamos National Laboratory; Swanson, Juliet [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The year 2009 celebrates 10 years of safe operations at the Waste Isolation Pilot Plant (WIPP), the only nuclear waste repository designated to dispose defense-related transuranic (TRU) waste in the United States. Many elements contributed to the success of this one-of-the-kind facility. One of the most important of these is the chemistry of the actinides under WIPP repository conditions. A reliable understanding of the potential release of actinides from the site to the accessible environment is important to the WIPP performance assessment (PA). The environmental chemistry of the major actinides disposed at the WIPP continues to be investigated as part of the ongoing recertification efforts of the WIPP project. This presentation provides an overview of the actinide chemistry for the WIPP repository conditions. The WIPP is a salt-based repository; therefore, the inflow of brine into the repository is minimized, due to the natural tendency of excavated salt to re-seal. Reducing anoxic conditions are expected in WIPP because of microbial activity and metal corrosion processes that consume the oxygen initially present. Should brine be introduced through an intrusion scenario, these same processes will re-establish reducing conditions. In the case of an intrusion scenario involving brine, the solubilization of actinides in brine is considered as a potential source of release to the accessible environment. The following key factors establish the concentrations of dissolved actinides under subsurface conditions: (1) Redox chemistry - The solubility of reduced actinides (III and IV oxidation states) is known to be significantly lower than the oxidized forms (V and/or VI oxidation states). In this context, the reducing conditions in the WIPP and the strong coupling of the chemistry for reduced metals and microbiological processes with actinides are important. (2) Complexation - For the anoxic, reducing and mildly basic brine systems in the WIPP, the most important inorganic complexants are expected to be carbonate/bicarbonate and hydroxide. There are also organic complexants in TRU waste with the potential to strongly influence actinide solubility. (3) Intrinsic and pseudo-actinide colloid formation - Many actinide species in their expected oxidation states tend to form colloids or strongly associate with non actinide colloids present (e.g., microbial, humic and organic). In this context, the relative importance of actinides, based on the TRU waste inventory, with respect to the potential release of actinides from the WIPP, is greater for plutonium and americium, and to less extent for uranium and thorium. The most important oxidation states for WIPP-relevant conditions are III and IV. We will present an update of the literature on WIPP-specific data, and a summary of the ongoing research related to actinide chemistry in the WIPP performed by the Los Alamos National Laboratory (LANL) Actinide Chemistry and Repository Science (ACRSP) team located in Carlsbad, NM [Reed 2007, Lucchini 2007, and Reed 2006].

  16. ,"Louisiana Nonassociated Natural Gas, Wet After Lease Separation, Proved Reserves (Billion Cubic Feet)"

    U.S. Energy Information Administration (EIA) 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS Codes; Column: Energy Sources and Shipments;NetPriceNonassociated Natural Gas, WetGas, Wet After

  17. Workshop on Excellence Empowered by a Diverse Academic Workforce: Achieving Racial & Ethnic Equity in Chemistry

    SciTech Connect (OSTI)

    Hassan. B. Ali

    2008-02-13T23:59:59.000Z

    The purpose of the Workshop 'Excellence Empowered by a Diverse Academic Workforce: Achieving Racial & Ethnic Equity in Chemistry' was to promote the development of a cadre of academic leaders who create, implement and promote programs and strategies for increasing the number of racial and ethnic minorities to equitable proportions on the faculties of departments throughout the academic chemistry community. An important objective of the workshop was to assist in creating an informed and committed community of chemistry leaders who will create, implement and promote programs and strategies to advance racial and ethnic equity in both the faculty and the student body with the goal of increasing the number of U.S. citizen underrepresented minorities (URM) participating in academic chemistry at all levels, with particular focus on the pipeline to chemistry faculty. This objective was met by (1) presentations of detailed data describing current levels of racial and ethnic minorities on the faculties of chemistry departments; (2) frank discussion of the obstacles to and benefits of racial/ethnic diversity in the chemistry professoriate; (3) summary of possible effective interventions and actions; and (4) promotion of the dissemination and adoption of initiatives designed to achieve racial/ethnic equity. Federal programs over the past thirty years have been instrumental in delivering to our universities URM students intending to major in the physical sciences such as chemistry. However, the near absence of URM faculty means that there is also an absence of URM as role models for aspiring students. For example, citing 2003 as a representative year, some statistics reveal the severity of the pipeline shrinkage for U. S. citizen URM starting from chemistry B.S. degrees awarded to the appointment to chemistry faculty. Compared to the URM population of approximately 30% for that year, 67% of the B.S. degrees in chemistry were awarded to white citizens and 17% were awarded to URM citizens. Proceeding along the pipeline, 83% of the Ph.D. degrees in chemistry were awarded to white citizens, and 6.4% were awarded to URM citizens. The number of white citizens occupying tenure faculty lines in chemistry departments at major research universities is estimated to be 86%, while the corresponding lines for URM was estimated to be only 3.7% in 2003. In raw numbers, the number of white chemistry faculty is estimated to be 1459 and the number of URM faculty was estimated to be just 62. Thus, starting with 16.6% for URM students awarded B.S. degrees in chemistry, the number decreases to 6.4% for URM students awarded Ph.D degrees in chemistry and then dwindles to only 3.6% URM faculty in major research universities, compared to a population of approximately 30% URM citizens. Similar statistics for URM representation in chemistry is found for the last two decades. Clearly there is a serious lack of URM mentors and role models among tenure faculty in our chemistry departments. The impact of this deficiency is captured in the statement that 'A university's lack of minority faculty sends a message to its students that minorities have no place in academia' thereby perpetuating a cycle of marginalization and discrimination. The lack of mentors and role models in academia deprive URM students who pass through the undergraduate programs of an education that is enriched by the intellectual and cognitive diversity that is inherent in a faculty of diverse backgrounds and cultures. Furthermore, URM are projected to constitute almost 32% of the U.S. population by 2020, so that URM will outnumber White males [who are projected to constitute 30% of the population (U.S. Census data)]. It is clearly time for this to change and proactive programs are needed immediately in order to insure that there will be an optimal inclusion of the future 'majority' of the U. S. domestic population throughout all levels of academia. The workshop was organized with the intention of triggering such a change by working with key representatives of chemistry in academia, namely the chem

  18. WETTABILITY ALTERATION OF POROUS MEDIA TO GAS-WETTING FOR IMPROVING PRODUCTIVITY AND INJECTIVITY IN GAS-LIQUID FLOWS

    SciTech Connect (OSTI)

    Abbas Firoozabadi

    2003-12-01T23:59:59.000Z

    Wettability alteration to intermediate gas-wetting in porous media by treatment with FC-759, a fluoropolymer polymer, has been studied experimentally. Berea sandstone was used as the main rock sample in our work and its wettability before and after chemical treatment was studied at various temperatures from 25 to 93 C. We also studied recovery performance for both gas/oil and oil/water systems for Berea sandstone before and after wettability alteration by chemical treatment. Our experimental study shows that chemical treatment with FC-759 can result in: (1) wettability alteration from strong liquid-wetting to stable intermediate gas-wetting at room temperature and at elevated temperatures; (2) neutral wetting for gas, oil, and water phases in two-phase flow; (3) significant increase in oil mobility for gas/oil system; and (4) improved recovery behavior for both gas/oil and oil/water systems. This work reveals a potential for field application for improved gas-well deliverability and well injectivity by altering the rock wettability around wellbore in gas condensate reservoirs from strong liquid-wetting to intermediate gas-wetting.

  19. The use of wet limestone systems for combined removal of SO sub 2 and NO sub x from flue gas

    SciTech Connect (OSTI)

    Lee, G.C. (Bechtel Corp., San Francisco, CA (USA)); Shen, D.X.; Littlejohn, D.; Chang, S.G. (Lawrence Berkeley Lab., CA (USA))

    1990-03-01T23:59:59.000Z

    A new approach by utilizing yellow phosphorus in conventional wet limestone systems for high efficiency control of SO{sub 2} and NO{sub x} emissions from power plants has been developed. The addition of yellow phosphorus in the system induces the production of O{sub 3} which subsequently oxidizes NO to NO{sub 2}. The resulting NO{sub 2} dissolves readily and can be reduced to form ammonium ions by dissolved SO{sub 2} under appropriate conditions. Yellow phosphorus is oxidized to yield P{sub 2}O{sub 5} which picks up water to form H{sub 3}PO{sub 4} mists and can be collected as a valuable product. Proof of concept experiments have been performed using a 20 acfm bench-scale system. The results show that better than 90% of SO{sub 2} and NO in simulated flue gas can be removed. Stoichiometric ratios (P/NO) ranging between 0.6 and 1.5 were obtained. This ratio depends on operating conditions as well as the process configuration. A conceptual process flow diagram has been proposed. A preliminary cost evaluation of this approach appears to indicate great economic potential. 22 refs., 8 figs., 1 tab.

  20. Advancing Chemistry with the Lanthanide and Actinide Elements Final Report, September 2013

    SciTech Connect (OSTI)

    Evans, William John [Univ of California, Irvine

    2013-09-11T23:59:59.000Z

    The objective of this research is to use the unique chemistry available from complexes of the lanthanides and actinides, as well as related heavy metals such as scandium, yttrium, and bismuth to advance chemistry in energy-related areas. The lanthanides and actinides have a combination of properties in terms of size, charge, electropositive character, and f valence orbitals that provides special opportunities to probe reactivity and catalysis in ways not possible with the other metals in the periodic table. We seek to discover reaction pathways and structural types that reveal new options in reaction chemistry related to energy. Identification of new paradigms in structure and reactivity should stimulate efforts to develop new types of catalytic processes that at present are not under consideration because either the transformation or the necessary intermediates are unknown. This project is one half of my laboratory’s DOE research which was split 50:50 between Catalysis and Heavy Element Chemistry programs in 2010. Hence, this report is for a half-project.