National Library of Energy BETA

Sample records for ng ph ase

  1. SolASE | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    SolASE Jump to: navigation, search Name: SolASE Address: P.O. Box 927122 Place: San Diego, California Zip: 92192 Region: Southern CA Area Sector: Solar Product: Commercializes...

  2. Blue Ng | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Ng Jump to: navigation, search Name: Blue-Ng Place: Bath, United Kingdom Zip: BA1 1SR Sector: Biomass Product: UK-based company that constructs and operates combined heat and...

  3. American Solar Energy Society ASES | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Energy Society ASES Jump to: navigation, search Name: American Solar Energy Society (ASES) Place: Boulder, Colorado Zip: 80301 Sector: Solar Product: Dedicated to advancing the use...

  4. Advanced Solar Electric Inc ASE | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Inc (ASE) Place: Thousand Oaks, California Zip: 91320 Product: US-based PV system installer. References: Advanced Solar Electric Inc (ASE)1 This article is a stub. You...

  5. DOE Selects ASE to Manage and Operate its National Renewable...

    Office of Environmental Management (EM)

    ASE to Manage and Operate its National Renewable Energy Laboratory DOE Selects ASE to Manage and Operate its National Renewable Energy Laboratory July 29, 2008 - 2:40pm Addthis ...

  6. PVT-NG sensor final report.

    SciTech Connect (OSTI)

    Mitchell, Dean James; Brusseau, Charles A.

    2012-01-01

    This document is a final report for the polyvinyl toluene (PVT) neutron-gamma (PVT-NG) project, which was sponsored by the Domestic Nuclear Detection Office (DNDO). The PVT-NG sensor uses PVT detectors for both gamma and neutron detection. The sensor exhibits excellent spectral resolution and gain stabilization, which are features that are beneficial for detection of both gamma-ray and neutron sources. In fact, the ability to perform isotope identification based on spectra that were measured by the PVT-NG sensor was demonstrated. As described in a previous report, the neutron sensitivity of the first version of the prototype was about 25% less than the DNDO requirement of 2.5 cps/ng for bare Cf-252. This document describes design modifications that were expected to improve the neutron sensitivity by about 50% relative to the PVT-NG prototype. However, the project was terminated before execution of the design modifications after portal vendors demonstrated other technologies that enable neutron detection without the use of He-3. Nevertheless, the PVT-NG sensor development demonstrated several performance goals that may be useful in future portal designs.

  7. PLJ3ASE RUSH ANALYTICAL DATA SHEET

    Office of Legacy Management (LM)

    for F U Beta Stamping wrahor8.fm jqtip6 of U heated in 900 P salt No Ro 5 bath. ' :,.a r ' .. ? ' ). ;..- *fhv 11 - n ... .I < Oil 3 PH kmph No. . . , r, . ...

  8. Test Report for NG Sensors GTX-1000.

    SciTech Connect (OSTI)

    Manginell, Ronald P.

    2015-02-01

    This report describes initial testing of the NG Sensor GTX-1000 natural gas monitoring system. This testing showed that the retention time, peak area stability and heating value repeatability of the GTX-1000 were promising for natural gas measurements in the field or at the well head. The repeatability can be less than 0.25% for LHV and HHV for the Airgas standard tested in this report, which is very promising for a first generation prototype. Ultimately this system should be capable of 0.1% repeatability in heating value at significant size and power reductions compared with competing systems.

  9. NREL Solar Researcher Honored with ASES Abbot Award - News Releases | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Solar Researcher Honored with ASES Abbot Award July 21, 2006 Photo of Dr. Chuck Kutscher, recipient of the Charles Greeley Abbot Award. Dr. Chuck Kutscher The American Solar Energy Society (ASES) honored Dr. Chuck Kutscher of the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) with the Charles Greeley Abbot Award during the recent ASES SOLAR 2006 conference. The Abbot Award recognizes individuals who have made significant career contributions to the field of solar

  10. DOE Selects ASE to Manage and Operate its National Renewable Energy Laboratory

    Energy.gov [DOE]

    WASHINGTON - The U.S. Department of Energy (DOE) today announced the Alliance for Sustainable Energy (ASE) LLC has been selected as the management and operating contractor for DOE's National...

  11. ASE/CAGI Meeting about Compressors and Compressed Air System Efficiency |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy ASE/CAGI Meeting about Compressors and Compressed Air System Efficiency ASE/CAGI Meeting about Compressors and Compressed Air System Efficiency On April 25, 2013, several representatives of energy efficiency advocacy organizations met with staff and members of the Compressed Air and Gas Institute (CAGI) along with some compressed air experts at the offices of the Alliance to Save Energy to explore and discuss a consensus approach to advancing energy efficiency of

  12. Detec%ng the Onset of Drizzle Using ARM

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Detec%ng the Onset of Drizzle Using ARM Observa%ons and a Steady-State 1-D Column Model PAVLOS KOLLIAS HAIYANG YU ANDREW LESAGE JINGJING TIAN ANDREW DZAMBO MIKAEL WITTE Outline * Mo%va%ons * Methods * Modeling the onset of drizzle * Observa%ons of drizzle onset * "Synergy" of Results * Conclusions Low, Drizzling Clouds * Near-surface radia%ve proper%es (e.g. scaWering, absorp%on, cloud "morphology"). * Drizzle affects aerosols' in/direct radia%ve effects. * Classic

  13. X-ray irradiation induced changes in electron transport in stabilized a-Se photoconductors

    SciTech Connect (OSTI)

    Walornyj, M.; Kasap, S. O.

    2013-12-07

    We have examined the effect of high-dose x-ray irradiation on electron transport in stabilized amorphous selenium (a-Se) x-ray photoconductive films (of the type used in x-ray image detectors) by measuring the electron lifetime ?{sub e} through interrupted-field time-of-flight experiments. X-ray induced effects have been examined through two types of experiments. In recovery experiments, the a-Se was preirradiated with and without an applied field (5 V/?m) during irradiation with sufficient dose (typically ?20 Gy at 21 C) to significantly reduce the electron lifetime by ?50%, and then the recovery of the lifetime was monitored as a function of time at three different temperatures, 10 C, 21 C, and 35 C. The lifetime recovery kinetics was exponential with a relaxation time ?{sub r} that is thermally activated with an activation energy of 1.66 eV. ?{sub r} is a few hours at 21 C and only a few minutes at 35 C. In experiments examining the irradiation induced effects, the a-Se film was repeatedly exposed to x-ray radiation and the changes in the drift mobility and lifetime were monitored as a function of accumulated dose D. There was no observable change in the drift mobility. At 21 C, the concentration of x-ray induced deep traps (or capture centers), N{sub d}, increases linearly with D (N{sub d} ? D) whereas at 35 C, the recovery process prevents a linear increase in N{sub d} with D, and N{sub d} saturates. In all cases, even under high dose irradiation (?50 Gy), the lifetime was recoverable to its original equilibrium (pre-exposure) value within a few relaxation times.

  14. THE CHANDRA ACIS SURVEY OF M33 (ChASeM33): THE FINAL SOURCE CATALOG

    SciTech Connect (OSTI)

    Tuellmann, R.; Gaetz, T. J.; Plucinsky, P. P.; Challis, P.; Edgar, R. J.; Kirshner, R. P.; Kuntz, K. D.; Blair, W. P.; Williams, B. F.; Pietsch, W.; Haberl, F.; Long, K. S.; Sasaki, M.; Winkler, P. F.; Pannuti, T. G.; Helfand, D. J.; Hughes, J. P.; Mazeh, T.; Shporer, A.

    2011-04-01

    This study presents the final source catalog of the Chandra ACIS Survey of M33 (ChASeM33). With a total exposure time of 1.4 Ms, ChASeM33 covers {approx}70% of the D{sub 25} isophote (R {approx} 4.0 kpc) of M33 and provides the deepest, most complete, and detailed look at a spiral galaxy in X-rays. The source catalog includes 662 sources, reaches a limiting unabsorbed luminosity of {approx}2.4x10{sup 34} erg s{sup -1} in the 0.35-8.0 keV energy band, and contains source positions, source net counts, fluxes and significances in several energy bands, and information on source variability. The analysis challenges posed by ChASeM33 and the techniques adopted to address these challenges are discussed. To constrain the nature of the detected X-ray source, hardness ratios were constructed and spectra were fit for 254 sources, follow-up MMT spectra of 116 sources were acquired, and cross-correlations with previous X-ray catalogs and other multi-wavelength data were generated. Based on this effort, 183 of the 662 ChASeM33 sources could be identified. Finally, the luminosity function (LF) for the detected point sources as well as the one for the X-ray binaries (XRBs) in M33 is presented. The LFs in the soft band (0.5-2.0 keV) and the hard band (2.0-8.0 keV) have a limiting luminosity at the 90% completeness limit of 4.0 x 10{sup 34} erg s{sup -1} and 1.6 x 10{sup 35} erg s{sup -1}(for D = 817 kpc), respectively, which is significantly lower than what was reported by previous XRB population studies in galaxies more distant than M33. The resulting distribution is consistent with a dominant population of high-mass XRBs as would be expected for M33.

  15. NEW ENGLAND NG SUPPLY LIMITED- FE Dkt. 16-103-NG- FOR LONG TERM AUTHORIZATION TO EXPORT NATURAL GAS TO CANADA

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Office of Fossil Energy gives notice of receipt of an Application filed August 3, 2016 by New England NG Supply Limited (New England), requesting long-term authorization to export natural gas...

  16. FPDS-NG Change Management Notice for the Oklahoma Tornado and Storm

    Energy.gov [DOE]

    A new National Interest Action value for the 'Oklahoma Tornado and Storm 2013' has been added to the FPDS-NG Production system.

  17. McPhD

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    is a research code designed to explore the applications of the Haskell programming language to Monte Carlo algorithms. June 29, 2013 software McPhD is a research code designed...

  18. Next Generation * Natural Gas (NG)2 Information Requirements--Executive Summary

    Reports and Publications

    2000-01-01

    The Energy Information Administration (EIA) has initiated the Next Generation * Natural Gas (NG)2 project to design and implement a new and comprehensive information program for natural gas to meet customer requirements in the post-2000 time frame.

  19. pH optrode

    DOE Patents [OSTI]

    Northrup, M. Allen; Langry, Kevin C.

    1993-01-01

    A process is provided for forming a long-lasting, stable, pH-sensitive dye-acrylamide copolymer useful as a pH-sensitive material for use in an optrode or other device sensitive to pH. An optrode may be made by mechanically attaching the copolymer to a sensing device such as an optical fiber.

  20. Photo-crystallization in a-Se layer structures: Effects of film-substrate interface-rigidity

    SciTech Connect (OSTI)

    Lindberg, G. P.; Gross, N.; Weinstein, B. A.; O'Loughlin, T.; Mishchenko, A.; Reznik, A.; Abbaszadeh, S.; Karim, K. S.; Belev, G.

    2014-11-21

    Amorphous selenium (a-Se) films deposited on rigid substrates can undergo photo-induced crystallization (PC) even at temperatures (T) well below the glass transition, T{sub g}???313?K. Substrate-generated shear strain is known to promote the PC process. In the present work, we explore the influence of different substrates (Si and glass), and different film-layer-substrate combinations, on the PC in a variety of a-Se films and film-structures. The intermediate layers (indium tin oxide and polyimide) are chosen to promote conductivity and/or to be a buffer against interface strain in structures of interest for digital imaging applications. The PC characteristics in these samples are evaluated and compared using optical microscopy, atomic-force microscopy, Raman mapping, and T-dependent Raman spectroscopy. Both the presence of a soft intermediate layer, and the thermal softening that occurs for T increasing through T{sub g}, inhibit the tendency for the onset of PC. The extensive PC mapping results in the wide range of samples studied here, as well as the suppression of PC near T{sub g} in this array of samples, strongly support the generality of this behavior. As a consequence, one may expect that the stability of a-Se films against PC can be enhanced by decreasing the rigidity of the film-substrate interface. In this regard, advanced film structures that employ flexible substrates, soft intermediate layers, and/or are designed to be operated near T{sub g} should be explored.

  1. Summer Ferreira, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... Summer Ferreira, Ph.D. Department: Battery Testing fsummer B.S. New Mexico Institute of Mining and Technology Ph.D. University of Illinois Urbana-Champaign Dr. Ferreira spent two ...

  2. DOE/AMO NG Infrastructure R & D & Methane emissions Mitigation workshop

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Proprietary and Confidential to NYSEARCH/NGA DOE/AMO NG INFRASTRUCTURE R & D & METHANE EMISSIONS MITIGATION WORKSHOP November 2014 David Merte & Daphne D'Zurko, NYSEARCH/NGA dmerte@northeastgas.org ddzurko@northeastgas.org NYSEARCH 2 NYSEARCH Program Research Areas * Improved Installation, Maintenance & Repair * Pipeline Integrity/Direct & Remote Assessment * Pipe Location * Leak Detection * Real-time Sensing and Inspection for Distribution * Environment/Reducing Greenhouse

  3. Wear-resistant Surface Technologies for Low-leakage NG Compressors

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Ali Erdemir Argonne National Laboratory U.S. DOE Advanced Manufacturing Office Program Review Meeting Washington, D.C. June 14-15, 2016 This presentation does not contain any proprietary, confidential, or otherwise restricted information. Project Objective  US is the largest producer of natural gas (NG) which is projected to further increase by 44% through 2040.  Methane emission through sealing surfaces of reciprocating compressors used in the supply chain is a major concern.  Pound

  4. Matrix effect on vibrational frequencies: Experiments and simulations for HCl and HNgCl (Ng = Kr and Xe)

    SciTech Connect (OSTI)

    Kalinowski, Jaroslaw; Rsnen, Markku; Lignell, Antti; Khriachtchev, Leonid; Gerber, R. Benny; Department of Physical Chemistry, Hebrew University, Jerusalem 91904, Israel and Department of Chemistry, University of California, Irvine, California 92697

    2014-03-07

    We study the environmental effect on molecules embedded in noble-gas (Ng) matrices. The experimental data on HXeCl and HKrCl in Ng matrices is enriched. As a result, the H?Xe stretching bands of HXeCl are now known in four Ng matrices (Ne, Ar, Kr, and Xe), and HKrCl is now known in Ar and Kr matrices. The order of the H?Xe stretching frequencies of HXeCl in different matrices is ?(Ne) < ?(Xe) < ?(Kr) < ?(Ar), which is a non-monotonous function of the dielectric constant, in contrast to the classical order observed for HCl: ?(Xe) < ?(Kr) < ?(Ar) < ?(Ne). The order of the H?Kr stretching frequencies of HKrCl is consistently ?(Kr) < ?(Ar). These matrix effects are analyzed theoretically by using a number of quantum chemical methods. The calculations on these molecules (HCl, HXeCl, and HKrCl) embedded in single Ng{sup ?} layer cages lead to very satisfactory results with respect to the relative matrix shifts in the case of the MP4(SDQ) method whereas the B3LYP-D and MP2 methods fail to fully reproduce these experimental results. The obtained order of frequencies is discussed in terms of the size available for the Ng hydrides in the cages, probably leading to different stresses on the embedded molecule. Taking into account vibrational anharmonicity produces a good agreement of the MP4(SDQ) frequencies of HCl and HXeCl with the experimental values in different matrices. This work also highlights a number of open questions in the field.

  5. ASE Program Certification Standards

    Alternative Fuels and Advanced Vehicles Data Center

  6. ASES Solar 2015

    Energy.gov [DOE]

    Solar 2015 is three-day conference with sessions for discussing pre-publication research at the forefront of your field, forums, and networking opportunities.

  7. Structure of Naegleria Tet-like dioxygenase (NgTet1) in complexes with a reaction intermediate 5-hydroxymethylcytosine DNA

    DOE PAGES-Beta [OSTI]

    Hashimoto, Hideharu; Pais, June E.; Dai, Nan; Corrêa, Jr., Ivan R.; Zhang, Xing; Zheng, Yu; Cheng, Xiaodong

    2015-08-31

    The family of ten-eleven translocation (Tet) dioxygenases is widely distributed across the eukaryotic tree of life, from mammals to the amoeboflagellate Naegleria gruberi. Like mammalian Tet proteins, the Naegleria Tet-like protein, NgTet1, acts on 5-methylcytosine (5mC) and generates 5-hydroxymethylcytosine (5hmC), 5-formylcytosine (5fC) and 5-carboxylcytosine (5caC) in three consecutive, Fe(II)- and α-ketoglutarate-dependent oxidation reactions. The two intermediates, 5hmC and 5fC, could be considered either as the reaction product of the previous enzymatic cycle or the substrate for the next cycle. Here we present a new crystal structure of NgTet1 in complex with DNA containing a 5hmC. Along with the previously solvedmore » NgTet1–5mC structure, the two complexes offer a detailed picture of the active site at individual stages of the reaction cycle. In the crystal, the hydroxymethyl (OH-CH2-) moiety of 5hmC points to the metal center, representing the reaction product of 5mC hydroxylation. The hydroxyl oxygen atom could be rotated away from the metal center, to a hydrophobic pocket formed by Ala212, Val293 and Phe295. Such rotation turns the hydroxyl oxygen atom away from the product conformation, and exposes the target CH2 towards the metal-ligand water molecule, where a dioxygen O2 molecule would occupy to initiate the next round of reaction by abstracting a hydrogen atom from the substrate. The Ala212-to-Val (A212V) mutant profoundly limits the product to 5hmC, probably due to the reduced hydrophobic pocket size restricts the binding of 5hmC as a substrate.« less

  8. Innova;on and Collabora;on: Carbon Storage and Oil and Natural Gas Technologies Review Mee;ng

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    the ENERGY lab 2016 Mastering the Subsurface Through Technology Innova;on and Collabora;on: Carbon Storage and Oil and Natural Gas Technologies Review Mee;ng Characterizing the Behavior of Metal- Based Systems Used for Control Devices in Extreme Environments Jeffrey A. Hawk SMT, ME&M, NETL, Albany, OR August 16, 2016 hIps://edx.netl.doe.gov/udw Wellbore Integrity Drivers ResulPng from Macondo A. Improving the Safety of Offshore OperaPons 1. The Need for a New Approach to Risk Assessment and

  9. Spatiotemporal Monte Carlo transport methods in x-ray semiconductor detectors: Application to pulse-height spectroscopy in a-Se

    SciTech Connect (OSTI)

    Fang Yuan; Badal, Andreu; Allec, Nicholas; Karim, Karim S.; Badano, Aldo

    2012-01-15

    Purpose: The authors describe a detailed Monte Carlo (MC) method for the coupled transport of ionizing particles and charge carriers in amorphous selenium (a-Se) semiconductor x-ray detectors, and model the effect of statistical variations on the detected signal. Methods: A detailed transport code was developed for modeling the signal formation process in semiconductor x-ray detectors. The charge transport routines include three-dimensional spatial and temporal models of electron-hole pair transport taking into account recombination and trapping. Many electron-hole pairs are created simultaneously in bursts from energy deposition events. Carrier transport processes include drift due to external field and Coulombic interactions, and diffusion due to Brownian motion. Results: Pulse-height spectra (PHS) have been simulated with different transport conditions for a range of monoenergetic incident x-ray energies and mammography radiation beam qualities. Two methods for calculating Swank factors from simulated PHS are shown, one using the entire PHS distribution, and the other using the photopeak. The latter ignores contributions from Compton scattering and K-fluorescence. Comparisons differ by approximately 2% between experimental measurements and simulations. Conclusions: The a-Se x-ray detector PHS responses simulated in this work include three-dimensional spatial and temporal transport of electron-hole pairs. These PHS were used to calculate the Swank factor and compare it with experimental measurements. The Swank factor was shown to be a function of x-ray energy and applied electric field. Trapping and recombination models are all shown to affect the Swank factor.

  10. Marathon Engineering Diversity PhD Fellowship

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Marathon Engineering Diversity PhD Fellowship The Marathon Engineering Diversity PhD Fellowship Program was established to encourage outstanding graduate students, especially women and minorities, to pursue the doctorate in engineering and encourage engineering education as a profession. The prospective Ph.D. candidate should be a US citizen or permanent resident and seeking a degree in fields of interest to Marathon Oil Company-chemical engineering, mechanical engineering, electrical

  11. pH Meter probe assembly

    DOE Patents [OSTI]

    Hale, Charles J.

    1983-01-01

    An assembly for mounting a pH probe in a flowing solution, such as a sanitary sewer line, which prevents the sensitive glass portion of the probe from becoming coated with grease, oil, and other contaminants, whereby the probe gives reliable pH indication over an extended period of time. The pH probe assembly utilizes a special filter media and a timed back-rinse feature for flushing clear surface contaminants of the filter. The flushing liquid is of a known pH and is utilized to check performance of the probe.

  12. pH Meter probe assembly

    DOE Patents [OSTI]

    Hale, C.J.

    1983-11-15

    An assembly for mounting a pH probe in a flowing solution, such as a sanitary sewer line, which prevents the sensitive glass portion of the probe from becoming coated with grease, oil, and other contaminants, whereby the probe gives reliable pH indication over an extended period of time. The pH probe assembly utilizes a special filter media and a timed back-rinse feature for flushing clear surface contaminants of the filter. The flushing liquid is of a known pH and is utilized to check performance of the probe. 1 fig.

  13. N,N'-DICYCLOHEXYL-N"-ISOTRIDECYLGUANIDINE AS SUPPRESSOR FOR THE NEXT GENERATION CAUSTIC SIDE SOLVENT EXTRACTION (NG-CSSX) PROCESS

    SciTech Connect (OSTI)

    Duncan, Nathan C; Roach, Benjamin D; Williams, Neil J; Bonnesen, Peter V; Rajbanshi, Arbin; Moyer, Bruce A

    2012-01-01

    ABSTRACT The purity, concentration, and source of the N,N'-dicyclohexyl-N"-isotridecylguanidine (DCiTG) suppressor (guanidine) used in the NG-CSSX process were found to influence solvent performance. As the starting isotridecanol used in the preparation of DCiTG is comprised of a mixture of branched-chain aliphatic alcohols, varying in composition with manufacturer, the resulting DCiTG itself is a mixture. Thus, it is necessary to address how the solvent performance will be affected by the different preparations of the DCiTG solvent component. In this study, four preparations of DCiTG from three sources were analyzed and evaluated for purity and performance, both in the absence and presence of an anionic surfactant impurity.

  14. Determination Of Ph Including Hemoglobin Correction

    DOE Patents [OSTI]

    Maynard, John D.; Hendee, Shonn P.; Rohrscheib, Mark R.; Nunez, David; Alam, M. Kathleen; Franke, James E.; Kemeny, Gabor J.

    2005-09-13

    Methods and apparatuses of determining the pH of a sample. A method can comprise determining an infrared spectrum of the sample, and determining the hemoglobin concentration of the sample. The hemoglobin concentration and the infrared spectrum can then be used to determine the pH of the sample. In some embodiments, the hemoglobin concentration can be used to select an model relating infrared spectra to pH that is applicable at the determined hemoglobin concentration. In other embodiments, a model relating hemoglobin concentration and infrared spectra to pH can be used. An apparatus according to the present invention can comprise an illumination system, adapted to supply radiation to a sample; a collection system, adapted to collect radiation expressed from the sample responsive to the incident radiation; and an analysis system, adapted to relate information about the incident radiation, the expressed radiation, and the hemoglobin concentration of the sample to pH.

  15. Effect of burst and recombination models for Monte Carlo transport of interacting carriers in a-Se x-ray detectors on Swank noise

    SciTech Connect (OSTI)

    Fang, Yuan; Karim, Karim S.; Badano, Aldo

    2014-01-15

    Purpose: The authors describe the modification to a previously developed Monte Carlo model of semiconductor direct x-ray detector required for studying the effect of burst and recombination algorithms on detector performance. This work provides insight into the effect of different charge generation models for a-Se detectors on Swank noise and recombination fraction. Methods: The proposed burst and recombination models are implemented in the Monte Carlo simulation package, ARTEMIS, developed byFang et al. [Spatiotemporal Monte Carlo transport methods in x-ray semiconductor detectors: Application to pulse-height spectroscopy in a-Se, Med. Phys. 39(1), 308319 (2012)]. The burst model generates a cloud of electron-hole pairs based on electron velocity, energy deposition, and material parameters distributed within a spherical uniform volume (SUV) or on a spherical surface area (SSA). A simple first-hit (FH) and a more detailed but computationally expensive nearest-neighbor (NN) recombination algorithms are also described and compared. Results: Simulated recombination fractions for a single electron-hole pair show good agreement with Onsager model for a wide range of electric field, thermalization distance, and temperature. The recombination fraction and Swank noise exhibit a dependence on the burst model for generation of many electron-hole pairs from a single x ray. The Swank noise decreased for the SSA compared to the SUV model at 4 V/?m, while the recombination fraction decreased for SSA compared to the SUV model at 30 V/?m. The NN and FH recombination results were comparable. Conclusions: Results obtained with the ARTEMIS Monte Carlo transport model incorporating drift and diffusion are validated with the Onsager model for a single electron-hole pair as a function of electric field, thermalization distance, and temperature. For x-ray interactions, the authors demonstrate that the choice of burst model can affect the simulation results for the generation of many

  16. Theoretical investigation of HNgNH{sub 3}{sup +} ions (Ng = He, Ne, Ar, Kr, and Xe)

    SciTech Connect (OSTI)

    Gao, Kunqi; Sheng, Li

    2015-04-14

    The equilibrium geometries, harmonic frequencies, and dissociation energies of HNgNH{sub 3}{sup +} ions (Ng = He, Ne, Ar, Kr, and Xe) were investigated using the following method: Becke-3-parameter-Lee-Yang-Parr (B3LYP), Boese-Matrin for Kinetics (BMK), second-order Mller-Plesset perturbation theory (MP2), and coupled-cluster with single and double excitations as well as perturbative inclusion of triples (CCSD(T)). The results indicate that HHeNH{sub 3}{sup +}, HArNH{sub 3}{sup +}, HKrNH{sub 3}{sup +}, and HXeNH{sub 3}{sup +} ions are metastable species that are protected from decomposition by high energy barriers, whereas the HNeNH{sub 3}{sup +} ion is unstable because of its relatively small energy barrier for decomposition. The bonding nature of noble-gas atoms in HNgNH{sub 3}{sup +} was also analyzed using the atoms in molecules approach, natural energy decomposition analysis, and natural bond orbital analysis.

  17. Adam Bratis, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Adam Bratis, Ph.D. Adam Bratis, Ph.D. Biofuels Program Manager Adam.Bratis@nrel.gov | 303-384-7852 Areas of Expertise Adam Bratis joined the National Renewable Energy Laboratory (NREL) in 2008. His role is to manage NREL's research and development efforts in support of the Department of Energy's mission in the biomass arena. This includes technical and managerial oversight in the areas of biochemical conversion, thermochemical conversion, algal biofuels, techno-economic and life-cycle analyses,

  18. Jacqueline R. Yang, Ph.D. | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Jacqueline R. Yang, Ph.D. About Us Jacqueline R. Yang, Ph.D. - Deputy CIO for Architecture Engineering, Technology, and Innovation

  19. Adaora Nwokoye, Ph.D | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Adaora Nwokoye, Ph.D About Us Adaora Nwokoye, Ph.D - Science and Technology Policy Fellow, Office of Energy Efficiency and Renewable Energy

  20. Tina Kaarsberg, Ph.D. | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Tina Kaarsberg, Ph.D. About Us Tina Kaarsberg, Ph.D. - SBIRSTTR Program Manager, Office of Energy Efficiency and Renewable Energy

  1. Mark Elless, Ph.D. | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Mark Elless, Ph.D. About Us Mark Elless, Ph.D. - Technology Manager, Bioenergy Technologies Office Most Recent Biofuels and Barbecue Chips: Small Business Develops Process to ...

  2. Jeff Griffin, Ph. D. Associate Laboratory Director

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Griffin, Ph. D. Associate Laboratory Director Environmental Stewardship Savannah River National Laboratory DOE-EM Robotics Team Visit to SRNL SRNL-MS-2015-00246 Rev. 0 December 7, 2015 SRNL Development and Adaptation of Technologies for Nuclear Applications 2 SRNL - National Laboratory for Environmental Management Multi-program national laboratory with broad portfolio Key role to translate basic science and technology to deployable and operable solutions * Develop detailed understanding of

  3. Effect of burst and recombination models for Monte Carlo transport of interacting carriers in a-Se x-ray detectors on Swank noise

    SciTech Connect (OSTI)

    Fang, Yuan; Karim, Karim S.; Badano, Aldo

    2014-01-15

    Purpose: The authors describe the modification to a previously developed Monte Carlo model of semiconductor direct x-ray detector required for studying the effect of burst and recombination algorithms on detector performance. This work provides insight into the effect of different charge generation models for a-Se detectors on Swank noise and recombination fraction. Methods: The proposed burst and recombination models are implemented in the Monte Carlo simulation package, ARTEMIS, developed byFang et al. [“Spatiotemporal Monte Carlo transport methods in x-ray semiconductor detectors: Application to pulse-height spectroscopy in a-Se,” Med. Phys. 39(1), 308–319 (2012)]. The burst model generates a cloud of electron-hole pairs based on electron velocity, energy deposition, and material parameters distributed within a spherical uniform volume (SUV) or on a spherical surface area (SSA). A simple first-hit (FH) and a more detailed but computationally expensive nearest-neighbor (NN) recombination algorithms are also described and compared. Results: Simulated recombination fractions for a single electron-hole pair show good agreement with Onsager model for a wide range of electric field, thermalization distance, and temperature. The recombination fraction and Swank noise exhibit a dependence on the burst model for generation of many electron-hole pairs from a single x ray. The Swank noise decreased for the SSA compared to the SUV model at 4 V/μm, while the recombination fraction decreased for SSA compared to the SUV model at 30 V/μm. The NN and FH recombination results were comparable. Conclusions: Results obtained with the ARTEMIS Monte Carlo transport model incorporating drift and diffusion are validated with the Onsager model for a single electron-hole pair as a function of electric field, thermalization distance, and temperature. For x-ray interactions, the authors demonstrate that the choice of burst model can affect the simulation results for the generation

  4. TUNL Ph.D. Degrees Theses

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Link to M.S. and M.A. Degrees Theses Link to Associated Degrees Theses TUNL Ph.D. Degrees Theses Browse by year 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954 1949 2016 Keegan J. Kelly, Nuclear Reaction Rate Uncertainties and the

  5. Development of the Next-Generation Caustic-Side Solvent Extraction (NG-CSSX) Process for Cesium Removal from High-Level Tank Waste

    SciTech Connect (OSTI)

    Moyer, Bruce A; Bonnesen, Peter V; Delmau, Laetitia Helene; Sloop Jr, Frederick {Fred} V; Williams, Neil J; Birdwell Jr, Joseph F; Lee, Denise L; Leonard, Ralph; Fink, Samuel D; Peters, Thomas B.; Geeting, Mark W

    2011-01-01

    This paper describes the chemical performance of the Next-Generation Caustic-Side Solvent Extraction (NG-CSSX) process in its current state of development for removal of cesium from the alkaline high-level tank wastes at the Savannah River Site (SRS) in the US Department of Energy (USDOE) complex. Overall, motivation for seeking a major enhancement in performance for the currently deployed CSSX process stems from needs for accelerating the cleanup schedule and reducing the cost of salt-waste disposition. The primary target of the NG-CSSX development campaign in the past year has been to formulate a solvent system and to design a corresponding flowsheet that boosts the performance of the SRS Modular CSSX Unit (MCU) from a current minimum decontamination factor of 12 to 40,000. The chemical approach entails use of a more soluble calixarene-crown ether, called MaxCalix, allowing the attainment of much higher cesium distribution ratios (DCs) on extraction. Concurrently decreasing the Cs-7SB modifier concentration is anticipated to promote better hydraulics. A new stripping chemistry has been devised using a vitrification-friendly aqueous boric acid strip solution and a guanidine suppressor in the solvent, resulting in sharply decreased DCs on stripping. Results are reported herein on solvent phase behavior and batch Cs distribution for waste simulants and real waste together with a preliminary flowsheet applicable for implementation in the MCU. The new solvent will enable MCU to process a much wider range of salt feeds and thereby extend its service lifetime beyond its design life of three years. Other potential benefits of NG-CSSX include increased throughput of the SRS Salt Waste Processing Facility (SWPF), currently under construction, and an alternative modular near-tank application at Hanford.

  6. Structure of Naegleria Tet-like dioxygenase (NgTet1) in complexes with a reaction intermediate 5-hydroxymethylcytosine DNA

    SciTech Connect (OSTI)

    Hashimoto, Hideharu; Pais, June E.; Dai, Nan; Corrêa, Jr., Ivan R.; Zhang, Xing; Zheng, Yu; Cheng, Xiaodong

    2015-08-31

    The family of ten-eleven translocation (Tet) dioxygenases is widely distributed across the eukaryotic tree of life, from mammals to the amoeboflagellate Naegleria gruberi. Like mammalian Tet proteins, the Naegleria Tet-like protein, NgTet1, acts on 5-methylcytosine (5mC) and generates 5-hydroxymethylcytosine (5hmC), 5-formylcytosine (5fC) and 5-carboxylcytosine (5caC) in three consecutive, Fe(II)- and α-ketoglutarate-dependent oxidation reactions. The two intermediates, 5hmC and 5fC, could be considered either as the reaction product of the previous enzymatic cycle or the substrate for the next cycle. Here we present a new crystal structure of NgTet1 in complex with DNA containing a 5hmC. Along with the previously solved NgTet1–5mC structure, the two complexes offer a detailed picture of the active site at individual stages of the reaction cycle. In the crystal, the hydroxymethyl (OH-CH2-) moiety of 5hmC points to the metal center, representing the reaction product of 5mC hydroxylation. The hydroxyl oxygen atom could be rotated away from the metal center, to a hydrophobic pocket formed by Ala212, Val293 and Phe295. Such rotation turns the hydroxyl oxygen atom away from the product conformation, and exposes the target CH2 towards the metal-ligand water molecule, where a dioxygen O2 molecule would occupy to initiate the next round of reaction by abstracting a hydrogen atom from the substrate. The Ala212-to-Val (A212V) mutant profoundly limits the product to 5hmC, probably due to the reduced hydrophobic pocket size restricts the binding of 5hmC as a substrate.

  7. Ng_NERSC_ASCR.pptx

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    of the cavity shape due to fabrication errors. This discovery was achieved as a team effort between SLAC, TOPS, and JLab which underscores the importance of the SciDAC...

  8. NREL: Photovoltaics Research - John Wohlgemuth, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    John Wohlgemuth, Ph.D. Principal Scientist Photo of John Wohlgemuth. 303-384-7982 Task Focus: Standards development, module failure analysis and the development of accelerated...

  9. NREL: Photovoltaics Research - Hasitha Mahabaduge, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Hasitha Mahabaduge, Ph.D. Postdoctoral Researcher Photo of Hasitha Mahabaduge 303-384-7350 Hasitha.Mahabaduge@nrel.gov Dr. Hasitha Mahabaduge's primary research interests include...

  10. J. Chris Ford, Ph.D. | Department of Energy

    Energy.gov (indexed) [DOE]

    Chris Ford, Ph.D. - Technical Advisor to the Director Office of Economic Impact and Diversity Most Recent by Chris Ford Unlocking Growth Opportunities for Minority Businesses...

  11. NREL: Photovoltaics Research - Emily Warren, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    philosophy degree in engineering for sustainable development from the University of Cambridge in 2006. She completed her Ph.D. at Caltech, studying the growth and energy...

  12. Young PhDs in Physics | Jefferson Lab

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    PhDs in Physics Young Ph.D.s in physics Young PhDs (left to right) William Luo, Jasmine Ellis, Shaun Lightfoot and Prakriti Verma made Oobleck with mechanical designer Joyce Miller during their visit to JLab. Young PhDs in Physics August 29, 2003 Jefferson Lab welcomes youngsters participating in summer science camp. Educating and exciting today's youth about science and technology is an important adjunct to Jefferson Lab's scientific mission. On July 16, the Department of Energy laboratory,

  13. Consideration of Factors Affecting Strip Effluent PH and Sodium Content

    SciTech Connect (OSTI)

    Peters, T.

    2015-07-29

    A number of factors were investigated to determine possible reasons for why the Strip Effluent (SE) can sometimes have higher than expected pH values and/or sodium content, both of which have prescribed limits. All of the factors likely have some impact on the pH values and Na content.

  14. FPDS-NG National Interest Action (NIA) Code to Track Procurement Actions Made in Support of the Pacific Earthquake and Tsunami

    Energy.gov [DOE]

    The purpose of this Policy Flash is to advise Contracting Officers of the establishment of a new National Interest Action (NIA) Code to track procurement actions made in support of the Pacific Earthquake and Tsunami. As explained below, this action does not trigger or otherwise authorize agencies to use any Emergency Acquisition Flexibilities in Federal Acquisition Regulation (FAR) 18.2. Effective immediately, procurement actions in direct response to the Pacific earthquake and tsunami should be reported in FPDS-NG using the NIA code "Pacific Earthquake/Tsunami 2011." The NIA value for Pacific Earthquake and Tsunami is currently valid from March 11, 2011, to September 12, 2011. Since responses to this incident may be conducted inside or outside the United States, Contracting Officers should ensure that "Place of Performance" data accurately reflects where the work will be performed. Note: This NIA Code should be used only to facilitate cost collection and reporting. Use of this NIA Code does not authorize or justify use of any Emergency Acquisition Flexibilities in FAR 18.2. However, the acquisition flexibilities described in FAR 18.1 may be available, as well as others in agency acquisition supplements, to support the response to the Pacific Earthquake and Tsunami.

  15. Method for producing rapid pH changes

    DOE Patents [OSTI]

    Clark, J.H.; Campillo, A.J.; Shapiro, S.L.; Winn, K.R.

    A method of initiating a rapid pH change in a solution comprises irradiating the solution with an intense flux of electromagnetic radiation of a frequency which produces a substantial pK change to a compound in solution. To optimize the resulting pH change, the compound being irradiated in solution should have an excited state lifetime substantially longer than the time required to establish an excited state acid-base equilibrium in the solution. Desired pH changes can be accomplished in nanoseconds or less by means of picosecond pulses of laser radiation.

  16. Method for producing rapid pH changes

    DOE Patents [OSTI]

    Clark, John H.; Campillo, Anthony J.; Shapiro, Stanley L.; Winn, Kenneth R.

    1981-01-01

    A method of initiating a rapid pH change in a solution by irradiating the solution with an intense flux of electromagnetic radiation of a frequency which produces a substantial pK change to a compound in solution. To optimize the resulting pH change, the compound being irradiated in solution should have an excited state lifetime substantially longer than the time required to establish an excited state acid-base equilibrium in the solution. Desired pH changes can be accomplished in nanoseconds or less by means of picosecond pulses of laser radiation.

  17. David W. Mulder, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    W. Mulder David W. Mulder, Ph.D. Research Scientist, Scientist III David.Mulder@nrel.gov | 303-384-7486 Research Interests David W. Mulder's research interests revolve around ...

  18. NREL: Photovoltaics Research - Nick Bosco, PhD

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Nick Bosco, PhD Senior Scientist Photo of vv 303-384-6337 Nick.Bosco@nrel.gov Task Focus: Failure Analysis and Accelerated Testing Specializes in: Infrared imaging and other...

  19. NREL: Photovoltaics Research - Nancy M. Haegel, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Nancy M. Haegel, Ph.D. Center Director, Materials Science Photo of Nancy Haegel 303 384 6548 Nancy.Haegel@nrel.gov Dr. Nancy Haegel is Center Director of the Materials Science...

  20. NREL: Photovoltaics Research - Mark Campanelli, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Mark Campanelli, Ph.D. Postdoctoral Researcher 303-384-6469 Mark.Campanelli@nrel.gov Mark Campanelli graduated with a master's degree and a doctorate in mathematics from Montana...

  1. NREL: Photovoltaics Research - Teresa Barnes, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Teresa Barnes, Ph.D. Senior Scientist 303-384-6682 Teresa.Barnes@nrel.gov Dr. Barnes received a bachelor's degree in chemical engineering from the University of Maryland in 2000...

  2. NREL: Photovoltaics Research - Benjamin G. Lee, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Benjamin G. Lee, Ph.D. Research Scientist Photo of Benjamin Lee 303-384-7869 Benjamin.Lee@nrel.gov Benjamin Lee earned his bachelor's degree from the California Institute of...

  3. NREL: Photovoltaics Research - Stephan Lany, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Stephan Lany, Ph.D. Scientist V Photo of Stephan Lany 303-384-6652 Stephan.Lany@nrel.gov Stephan Lany is a computational materials scientist with a background in electronic...

  4. NREL: Photovoltaics Research - Bill McMahon, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Bill McMahon, Ph.D. Senior Scientist 303-384-6578 Bill.McMahon@nrel.gov Dr. Bill McMahon received a bachelor's degree in engineering physics from the Colorado School of Mines in...

  5. Daniel A. Ruddy, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Dan.Ruddy@nrel.gov | 303-384-6322 Research Interests Inorganic chemistry and catalysis New ... Dan received a Ph.D. degree in Inorganic Chemistry from the University of California, ...

  6. MICfiAEL WHALEN-SHXW, Ph.D. *

    Office of Scientific and Technical Information (OSTI)

    r' q p MICfiAEL WHALEN-SHXW, Ph.D. * 7041 Zane Trail Road Circleville, Ohio 43113 (614) ... ( . . . * * @ ' 1 ) 1 3 IS Mbt?Jrn 4 ' D DISCLAIMER This report was prepared as an ...

  7. Activity-based protein profiling of secreted cellulolytic enzyme activity dynamics in Trichoderma reesei QM6a, NG14, and RUT-C30

    SciTech Connect (OSTI)

    Anderson, Lindsey N.; Culley, David E.; Hofstad, Beth A.; Chauvigne-Hines, Lacie M.; Zink, Erika M.; Purvine, Samuel O.; Smith, Richard D.; Callister, Stephen J.; Magnuson, Jon M.; Wright, Aaron T.

    2013-12-01

    Development of alternative, non-petroleum based sources of bioenergy that can be applied in the short-term find great promise in the use of highly abundant and renewable lignocellulosic plant biomass.1 This material obtained from different feedstocks, such as forest litter or agricultural residues, can yield liquid fuels and other chemical products through biorefinery processes.2 Biofuels are obtained from lignocellulosic materials by chemical pretreatment of the biomass, followed by enzymatic decomposition of cellulosic and hemicellulosic compounds into soluble sugars that are converted to desired chemical products via microbial metabolism and fermentation.3, 4 To release soluble sugars from polymeric cellulose multiple enzymes are required, including endoglucanase, exoglucanase, and ?-glucosidase.5, 6 However, the enzymatic hydrolysis of cellulose into soluble sugars remains a significant limiting factor to the efficient and economically viable utilization of lignocellulosic biomass for transport fuels.7, 8 The primary industrial source of cellulose and hemicellulases is the mesophilic soft-rot fungus Trichoderma reesei,9 having widespread applications in food, feed, textile, pulp, and paper industries.10 The genome encodes 200 glycoside hydrolases, including 10 cellulolytic and 16 hemicellulolytic enzymes.11 The hypercellulolytic catabolite derepressed strain RUT-C30 was obtained through a three-step UV and chemical mutagenesis of the original T. reesei strain QM6a,12, 13 in which strains M7 and NG14 were intermediate, having higher cellulolytic activity than the parent strain but less activity and higher catabolite repression than RUT-C30.14 Numerous methods have been employed to optimize the secreted enzyme cocktail of T. reesei including cultivation conditions, operational parameters, and mutagenesis.3 However, creating an optimal and economical enzyme mixture for production-scale biofuels synthesis may take thousands of experiments to identify.

  8. Comparing Metal Leaching and Toxicity from High pH, Low pH, and High Ammonia Fly Ash

    SciTech Connect (OSTI)

    Palumbo, Anthony Vito; Phillips, Jana Randolph; Fagan, Lisa Anne; Drake, Meghan M; Ruther, Rose Emily; Fisher, L. Suzanne; Amonette, J. E.

    2007-01-01

    Previous work with both class F and class C fly ash indicated minimal leaching from most fly ashes tested. However, the addition of NOx removal equipment might result in higher levels of ammonia in the fly ash. We have recently been testing fly ash with a wide range of pH (3.7-12.4) originating from systems with NOx removal equipment. Leaching experiments were done using dilute CaCl2 solutions in batch and columns and a batch nitric acid method. All methods indicated that the leaching of heavy metals was different in the highest ammonia sample tested and the high pH sample. However, toxicity testing with the Microtox system has indicated little potential toxicity in leachates except for the fly ash at the highest pH (12.4). When the leachate from the high pH fly ash was neutralized, toxicity was eliminated.

  9. Comparing metal leaching and toxicity from high pH, low pH, and high ammonia fly ash

    SciTech Connect (OSTI)

    Palumbo, Anthony V.; Tarver, Jana R.; Fagan, Lisa A.; McNeilly, Meghan S.; Ruther, Rose; Fisher, L. S.; Amonette, James E.

    2007-07-01

    Previous work with both class F and class C fly ash indicated minimal leaching from most fly ashes tested. However, the addition of NOx removal equipment might result in higher levels of ammonia in the fly ash. We have recently been testing fly ash with a wide range of pH (3.712.4) originating from systems with NOx removal equipment. Leaching experiments were done using dilute CaCl2 solutions in batch and columns and a batch nitric acid method. All methods indicated that the leaching of heavy metals was different in the highest ammonia sample tested and the high pH sample. However, toxicity testing with the Microtox* system has indicated little potential toxicity in leachates except for the fly ash at the highest pH (12.4). When the leachate from the high pH fly ash was neutralized, toxicity was eliminated.

  10. Near-infrared noninvasive spectroscopic determination of pH

    DOE Patents [OSTI]

    Alam, Mary K.; Robinson, Mark R.

    1998-08-11

    Methods and apparatus for, preferably, determining noninvasively and in vitro pH in a human. The non-invasive method includes the steps of: generating light at three or more different wavelengths in the range of 1000 nm to 2500 nm; irradiating blood containing tissue; measuring the intensities of the wavelengths emerging from the blood containing tissue to obtain a set of at least three spectral intensities v. wavelengths; and determining the unknown values of pH. The determination of pH is made by using measured intensities at wavelengths that exhibit change in absorbance due to histidine titration. Histidine absorbance changes are due to titration by hydrogen ions. The determination of the unknown pH values is performed by at least one multivariate algorithm using two or more variables and at least one calibration model. The determined pH values are within the physiological ranges observed in blood containing tissue. The apparatus includes a tissue positioning device, a source, at least one detector, electronics, a microprocessor, memory, and apparatus for indicating the determined values.

  11. IMPACT OF WATER PH ON ZEBRA MUSSEL MORTALITY

    SciTech Connect (OSTI)

    Daniel P. Molloy

    2002-10-15

    The experiments conducted this past quarter have suggested that the bacterium Pseudomonas fluorescens strain CL0145A is effective at killing zebra mussels throughout the entire range of pH values tested (7.2 to 8.6). Highest mortality was achieved at pH values characteristic of preferred zebra mussel waterbodies, i.e., hard waters with a range of 7.8 to 8.6. In all water types tested, however, ranging from very soft to very hard, considerable mussel kill was achieved (83 to 99% mean mortality), suggesting that regardless of the pH or hardness of the treated water, significant mussel kill can be achieved upon treatment with P. fluorescens strain CL0145A. These results further support the concept that this bacterium has significant potential for use as a zebra mussel control agent in power plant pipes receiving waters with a wide range of physical and chemical characteristics.

  12. Measurement and control of pH in hydrothermal solutions

    SciTech Connect (OSTI)

    Wesolowski, D.J.; Palmer, D.A.; Mesmer, R.E.

    1995-12-31

    Hydrogen-electrode concentration cells with liquid junction are routinely used to measure the pH of aqueous solutions from 0 to 300 C. Results include the dissociation constants of common acids and bases and the hydrolysis and complexation of metal ions in aqueous electrolytes over a wide range of salinities. Recently, we have utilized these cells to examine the sorption of H{sup +} on mineral surfaces, the solubility of minerals with continuous in situ pH measurement, and the thermal decompositon rates of organic acids.

  13. PhD Comics' guide to fusion makes the complex understandable...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    PhD Comics' guide to fusion makes the complex understandable June 12, 2014 (Photo by PhD Comics, www.phdcomics.comTV) A scene from PhD Comics' Jorge Cham's video "What is Fusion" ...

  14. C W L WHALEN-SHAW, Ph.D,

    Office of Scientific and Technical Information (OSTI)

    k C W L WHALEN-SHAW, Ph.D, t 7041 Zane Trail Road Circleville, Ohio 431 13 (614) 474-1129 ... 2. The layered pigment containing 30% Ti02 and 70% l-clay yields a 79:2 brightness. ...

  15. Flexible high-temperature pH probe

    DOE Patents [OSTI]

    Bielawski, John C.; Outwater, John O.; Halbfinger, George P.

    2003-04-22

    A flexible pH probe device is provided for use in hot water and other high temperature environments up to about 590.degree. F. The pH probe includes a flexible, inert tubular probe member, an oxygen anion conducting, solid state electrolyte plug located at the distal end of the tubular member, oxide powder disposed at the distal end of the tubular member; a metal wire extending along the tubular member and having a distal end in contact with the oxide powder so as to form therewith an internal reference electrode; and a compression fitting forming a pressure boundary seal around a portion of the tubular member remote from the distal end thereof. Preferably, the tubular member is made of polytetrafluoroethylene, and the solid state electrolyte plug is made of stabilized zirconia. The flexibility of the probe member enables placement of the electrode into the area of interest, including around corners, into confined areas and the like.

  16. SAMPLING DEVICE FOR pH MEASUREMENT IN PROCESS STREAMS

    DOE Patents [OSTI]

    Michelson, C.E.; Carson, W.N. Jr.

    1958-11-01

    A pH cell is presented for monitoring the hydrogen ion concentration of a fluid in a process stream. The cell is made of glass with a side entry arm just above a reservoir in which the ends of a glass electrode and a reference electrode are situated. The glass electrode contains the usual internal solution which is connected to a lead. The reference electrode is formed of saturated calomel having a salt bridge in its bottom portion fabricated of a porous glass to insure low electrolyte flow. A flush tube leads into the cell through which buffer and flush solutions are introduced. A ground wire twists about both electrode ends to insure constant electrical grounding of the sample. The electrode leads are electrically connected to a pH meter of aay standard type.

  17. Bryon S. Donohoe, Ph.D | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Bryon S. Donohoe Bryon S. Donohoe, Ph.D Senior Scientist, Biosciences Center Bryon.Donohoe@nrel.gov | 303-384-7773 Affiliated Research Programs Purdue University Discover Park, The Center for Direct Catalytic Conversion of Biomass to Biofuels BioEnergy Science Center Department of Energy, Office of Energy Efficiency and Renewable Energy, Bioenergy Technologies Office Areas of Expertise I apply my background in structural biology and plant/algal cell biology to address questions about the

  18. From Neighborhoods to Nationwide, ASE Congressional briefing

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    eere.energy.gov 1 From Neighborhoods to Nationwide Danielle Sass Byrnett Supervisor, Better Buildings Residential Residential Energy Efficiency Upgrades eere.energy.gov 2 Better Buildings Neighborhood Program $508 million in grants: $1.4 to $40 million each eere.energy.gov 3 Better Buildings Neighborhood Program Save consumers energy and money Complete 100,000 energy efficiency upgrades Develop sustainable energy efficiency upgrade programs Create jobs by supporting small businesses $508 million

  19. Microsoft Word - 2013 KCP ASES Final

    National Nuclear Security Administration (NNSA)

    ... is "to establish an integrated strategy towards sustainability in the Federal Government and to make reduction of greenhouse gas emissions (GHG) a priority for Federal agencies." ...

  20. Re-designing the PhEDEx Security Model

    SciTech Connect (OSTI)

    Huang, C.-H.; Wildish, T.; Zhang, X.

    2014-01-01

    PhEDEx, the data-placement tool used by the CMS experiment at the LHC, was conceived in a more trusting time. The security model provided a safe environment for site agents and operators, but offerred little more protection than that. Data was not sufficiently protected against loss caused by operator error or software bugs or by deliberate manipulation of the database. Operators were given high levels of access to the database, beyond what was actually needed to accomplish their tasks. This exposed them to the risk of suspicion should an incident occur. Multiple implementations of the security model led to difficulties maintaining code, which can lead to degredation of security over time. In order to meet the simultaneous goals of protecting CMS data, protecting the operators from undue exposure to risk, increasing monitoring capabilities and improving maintainability of the security model, the PhEDEx security model was redesigned and re-implemented. Security was moved from the application layer into the database itself, fine-grained access roles were established, and tools and procedures created to control the evolution of the security model over time. In this paper we describe this work, we describe the deployment of the new security model, and we show how these enhancements improve security on several fronts simultaneously.

  1. With 400th Ph.D. grad, UW-Madison celebrates a half century of...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    With 400th Ph.D. grad, UW-Madison celebrates a half century of fusion energy American Fusion News Category: U.S. Universities Link: With 400th Ph.D. grad, UW-Madison celebrates a ...

  2. PH adjustment of power plant cooling water with flue gas/fly...

    Office of Scientific and Technical Information (OSTI)

    PH adjustment of power plant cooling water with flue gasfly ash Citation Details In-Document Search Title: PH adjustment of power plant cooling water with flue gasfly ash A...

  3. Brine pH Modification Scale Control Technology. 2. A Review.pdf...

    Open Energy Information (Open El) [EERE & EIA]

    Brine pH Modification Scale Control Technology. 2. A Review.pdf Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Brine pH Modification Scale...

  4. Microfluidic device having an immobilized pH gradient and page...

    Office of Scientific and Technical Information (OSTI)

    pH gradient and page gels for protein separation and analysis Citation Details In-Document Search Title: Microfluidic device having an immobilized pH gradient and page gels ...

  5. Role of pH in metal adsorption from aqueous solutions containing chelating agents on chitosan

    SciTech Connect (OSTI)

    Wu, F.C.; Tseng, R.L.; Juang, R.S.

    1999-01-01

    The role of pH in adsorption of Cu(II) from aqueous solutions containing chelating agents on chitosan was emphasized. Four chelating agents including ethylenediaminetetraacetic acid (EDTA), citric acid, tartaric acid, and sodium gluconate were used. It was shown that the adsorption ability of Cu(II) on chitosan from its chelated solutions varied significantly with pH variations. The competition between coordination of Cu(II) with unprotonated chitosan and electrostatic interaction of the Cu(II) chelates with protonated chitosan took place because of the change in solution pH during adsorption. The maximum adsorption capacity was obtained within each optimal pH range determined from titration curves of the chelated solutions. Coordination of Cu(II) with the unprotonated chitosan was found to dominate at pH below such an optimal pH value.

  6. Microfluidic device having an immobilized pH gradient and page gels for

    Office of Scientific and Technical Information (OSTI)

    protein separation and analysis (Patent) | DOEPatents device having an immobilized pH gradient and page gels for protein separation and analysis Title: Microfluidic device having an immobilized pH gradient and page gels for protein separation and analysis Disclosed is a novel microfluidic device enabling on-chip implementation of a two-dimensional separation methodology. Previously disclosed microscale immobilized pH gradients (IPG) are combined with perpendicular polyacrylamide gel

  7. Microfluidic device having an immobilized pH gradient and page gels for

    Office of Scientific and Technical Information (OSTI)

    protein separation and analysis (Patent) | SciTech Connect device having an immobilized pH gradient and page gels for protein separation and analysis Citation Details In-Document Search Title: Microfluidic device having an immobilized pH gradient and page gels for protein separation and analysis Disclosed is a novel microfluidic device enabling on-chip implementation of a two-dimensional separation methodology. Previously disclosed microscale immobilized pH gradients (IPG) are combined with

  8. High Temperature Chemical Sensing Tool: Preliminary pH and reference electrode test results

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Grzegorz Cieslewski

    2014-09-30

    Project: High Temperature Chemical Sensing Tool for Distributed Mapping of Fracture Flow in EGS. Preliminary pH and reference electrode test results.

  9. ORISE: Recent Ph.D. recipients wanted for Energy Efficiency and...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Recent Ph.D. recipients wanted for Energy Efficiency and Renewable Energy Research Awards Applications being accepted through the end of April FOR IMMEDIATE RELEASE March 4, 2014...

  10. Kathryn Clay, Ph.D. Vice President of Policy Strategy American...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Remarks of Kathryn Clay, Ph.D. Vice President of Policy Strategy American Gas Association PUBLIC MEETING ON ENERGY INFRASTRUCTURE SITING DEPARTMENT OF ENERGY QUADRENNIAL ENERGY ...

  11. Influence of pH and sequence in peptide aggregation via molecular simulation

    SciTech Connect (OSTI)

    Enciso, Marta; Schütte, Christof; Delle Site, Luigi

    2015-12-28

    We employ a recently developed coarse-grained model for peptides and proteins where the effect of pH is automatically included. We explore the effect of pH in the aggregation process of the amyloidogenic peptide KTVIIE and two related sequences, using three different pH environments. Simulations using large systems (24 peptides chains per box) allow us to describe the formation of realistic peptide aggregates. We evaluate the thermodynamic and kinetic implications of changes in sequence and pH upon peptide aggregation, and we discuss how a minimalistic coarse-grained model can account for these details.

  12. PhD Comics' guide to fusion makes the complex understandable | Princeton

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Plasma Physics Lab PhD Comics' guide to fusion makes the complex understandable By Jeanne Jackson DeVoe June 12, 2014 Tweet Widget Google Plus One Share on Facebook A scene from PhD Comics' Jorge Cham's video "What is Fusion" features interviews with PPPL physicists on location and employs animation to allow the scientists to explain magnetic fusion. (Photo by PhD Comics, www.phdcomics.com/TV) A scene from PhD Comics' Jorge Cham's video "What is Fusion" features

  13. Influence of in vitro assay pH and chyme composition on As bioaccessib...

    Office of Scientific and Technical Information (OSTI)

    Title: Influence of in vitro assay pH and chyme composition on As bioaccessibility in contaminated soils Authors: Smith, Euan ; Scheckel, Kirk ; Miller, Bradley W. ; Weber, John ; ...

  14. Consideration of factors affecting strip effluent pH and sodium content

    SciTech Connect (OSTI)

    Peters, T. B.

    2015-07-29

    A number of factors were investigated to determine possible reasons for why the Strip Effluent (SE) can sometimes have higher than expected pH values and/or sodium content, both of which have prescribed limits. All of the factors likely have some impact on the pH values and Na content.

  15. Method and apparatus for maintaining the pH in zinc-bromine battery systems

    DOE Patents [OSTI]

    Grimes, Patrick G.

    1985-09-10

    A method and apparatus for maintaining the pH level in a zinc-bromine battery features reacting decomposition hydrogen with bromine in the presence of a catalyst. The catalyst encourages the formation of hydrogen and bromine ions. The decomposition hydrogen is therefore consumed, alloying the pH of the system to remain substantially at a given value.

  16. Origin of the instability of octadecylamine Langmuir monolayer at low pH

    SciTech Connect (OSTI)

    Avazbaeva, Zaure; Sung, Woongmo; Lee, Jonggwan; Phan, Minh Dinh; Shin, Kwanwoo; Vaknin, David; Kim, Doseok

    2015-11-30

    In this paper, it has been reported that an octadecylamine (ODA) Langmuir monolayer becomes unstable at low pH values with no measurable surface pressure at around pH 3.5, suggesting significant dissolution of the ODA molecule into the subphase solution (Albrecht, Colloids Surf. A 2006, 284–285, 166–174). However, by lowering the pH further, ODA molecules reoccupy the surface, and a full monolayer is recovered at pH 2.5. Using surface sum-frequency spectroscopy and pressure–area isotherms, it is found that the recovered monolayer at very low pH has a larger area per molecule with many gauche defects in the ODA molecules as compared to that at high pH values. This structural change suggests that the reappearance of the monolayer is due to the adsorbed Cl– counterions to the protonated amine groups, leading to partial charge neutralization. This proposition is confirmed by intentionally adding monovalent salts (i.e., NaCl, NaBr, or NaI) to the subphase to recover the monolayer at pH 3.5, in which the detailed structure of the monolayer is confirmed by sum frequency spectra and the adsorbed anions by X-ray reflectivity.

  17. Origin of the instability of octadecylamine Langmuir monolayer at low pH

    DOE PAGES-Beta [OSTI]

    Avazbaeva, Zaure; Sung, Woongmo; Lee, Jonggwan; Phan, Minh Dinh; Shin, Kwanwoo; Vaknin, David; Kim, Doseok

    2015-11-30

    In this paper, it has been reported that an octadecylamine (ODA) Langmuir monolayer becomes unstable at low pH values with no measurable surface pressure at around pH 3.5, suggesting significant dissolution of the ODA molecule into the subphase solution (Albrecht, Colloids Surf. A 2006, 284–285, 166–174). However, by lowering the pH further, ODA molecules reoccupy the surface, and a full monolayer is recovered at pH 2.5. Using surface sum-frequency spectroscopy and pressure–area isotherms, it is found that the recovered monolayer at very low pH has a larger area per molecule with many gauche defects in the ODA molecules as comparedmore » to that at high pH values. This structural change suggests that the reappearance of the monolayer is due to the adsorbed Cl– counterions to the protonated amine groups, leading to partial charge neutralization. This proposition is confirmed by intentionally adding monovalent salts (i.e., NaCl, NaBr, or NaI) to the subphase to recover the monolayer at pH 3.5, in which the detailed structure of the monolayer is confirmed by sum frequency spectra and the adsorbed anions by X-ray reflectivity.« less

  18. ComPASS Present and Future Computing Requirements

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... b ased a ccelera8on: a d river beam ( laserpar8cles) p ropaga8ng through a p lasma c ... of high-intensity proton accelerators to minimize beam losses that cause radiation damage. ...

  19. pH effect on structural and optical properties of nanostructured zinc oxide thin films

    SciTech Connect (OSTI)

    Munef, R. A.

    2015-03-30

    ZnO nanostructures were Deposited on Objekttrager glasses for various pH values by chemical bath deposition method using Zn (NO3)2·6H2O (zinc nitrate hexahydrate) solution at 75°C reaction temperature without any posterior treatments. The ZnO nanostructures obtained were characterized by X-ray Diffraction (XRD, UV). The structure was hexagonal and it was found that some peaks disappear with various pH values. The grain sizes of ZnO films increases from 22-to-29nm with increasing pH. The transmission of the films was (85-95%)

  20. PAA-15-0001- In the Matter of Rolf E. Carlson, PhD

    Energy.gov [DOE]

    On July 31, 2015, OHA issued a decision denying a Privacy Act Appeal filed by Rolf E. Carlson, PhD from a determination issued to him by the DOE’s National Nuclear Security Administration (NNSA)....

  1. ORISE report shows number of health physics Ph.D.s declined in...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ORISE report shows number of health physics Ph.D.s declined in 2009 FOR IMMEDIATE RELEASE June 15, 2010 FY10-37 OAK RIDGE, Tenn.-Health physics undergraduate degrees increased...

  2. Paul W. King, Ph.D., M.S. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Paul W. King Paul W. King, Ph.D., M.S. Scientist VI - Supervisor, Photobiology Group Paul.King@nrel.gov | 303-384-6277 Research Interests Paul King's research interests are broadly ...

  3. WBU-14-0011- In the Matter of Dr. Paul M. Cole, Ph.D

    Energy.gov [DOE]

    On November 3, 2014, the Office of Hearings and Appeals (OHA) issued a decision denying a jurisdictional appeal filed by Dr. Paul M. Cole, Ph.D (Dr. Cole), a former Oak Ridge Institute for Science...

  4. Microfluidic device having an immobilized pH gradient and page...

    Office of Scientific and Technical Information (OSTI)

    and page gels for protein separation and analysis Title: Microfluidic device having an immobilized pH gradient and page gels for protein separation and analysis Disclosed is a ...

  5. Ames Laboratory Ph.D. Student is awarded Margaret Butler Fellowship | The

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Ames Laboratory Ph.D. Student is awarded Margaret Butler Fellowship Contacts: For Release: July 26, 2016 Colleen Bertoni, Ames Laboratory Steve Karsjen, Public Affairs, 515-294-5643 AMES, Iowa - U.S. Department of Energy's (DOE) Ames Laboratory and Iowa State University PhD student Colleen Bertoni has been named this year's recipient of the Margaret Butler Fellowship in Computational Science. Bertoni will spend 2017 at the Argonne Leadership Computing Facility (ALCF), a DOE user facility at

  6. pH effect on the separation of uranium fluoride effluents by the reverse osmosis process

    SciTech Connect (OSTI)

    Yun Chen ); Min-Lin Chu; Mu-Chang Shieh , Lung-tan, )

    1992-04-01

    Ammonium fluoride solutions and uranium fluoride effluents (UFE) with solute concentrations from 0.101 to 7,920 kg/m{sup 3}, at pH 2.80 to 9.60, have been treated with a continuous feedback reverse osmosis (RO) process. The solute rejections of NH{sub 4}{sup +}, F{sup {minus}}, and U{sup 6+} depend heavily on the feed pH value. For ammonium fluoride solutions, the rejection ratio of NH{sub 4}{sup +} decreases sharply from ca. 90 to 44.2% with the feed pH increased from 3.30 to 9.60, while that of F{sup {minus}} increases abruptly from 44.8 to 99.9% at the same pH change. For UFE solutions, the rejection ratio of U{sup 6+} remains greater than 90% at pH 2.80-7.13, while that of F{sup {minus}} decreases steadily from 96.4 to 18.8% with decreasing feed pH. Accordingly, the fluoride ions can be separated from UFE solutions under acidic conditions. The changes of solute rejection with feed pH can be explained by the different solubilities of the solutes in the membrane at different pH values. The UFE solutions with {alpha} and {beta} activities at 20.4-53.7 and 8.99-21.3 ({times} 10{sup 5} Baq/m{sup 3}) can be reduced to a level lower than 2.41 and 3.37 ({times}10{sup 5} Baq/m{sup 3}), respectively, by the current RO process.

  7. Final Report: Support for Polytechnic PhD Student, September 24, 1996 - June 30, 1999

    SciTech Connect (OSTI)

    Myerson, Allan S.

    2000-01-19

    Polytechnic University PhD student working on research projects in the area of fossil energy and renewable energy were supported in this program and did their research work at Brookhaven National Laboratory in the Department of Applied Sciences. One of these students had completed an MS degree in Chemical Engineering at Howard University while doing his research at Brookhaven. This student continued his studies by becoming a Polytechnic PhD student while doing his research work at Brookhaven.

  8. Violeta Sànchez i Nogué, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Violeta Sànchez i Nogué Violeta Sànchez i Nogué, Ph.D. Postdoctoral Researcher, Biochemical Process Research Violeta.SancheziNogue@nrel.gov | 303-384-6641 Research Interests Production of chemicals and fuels from biomass feedstocks involving biotechnological steps Microbial tolerance to biomass feedstocks Metabolic engineering for the production of value-added compounds Areas of Expertise Fermentation technology Metabolic engineering Education Ph.D., Engineering, Division of Applied

  9. CBS Ph.D. Student is awarded Margaret Butler Fellowship | The Ames

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Laboratory CBS Ph.D. Student is awarded Margaret Butler Fellowship U.S. Department of Energy's (DOE) Ames Laboratory and Iowa State University PhD student Colleen Bertoni has been named this year's recipient of the Margaret Butler Fellowship in Computational Science. Bertoni will spend 2017 at the Argonne Leadership Computing Facility (ALCF), a DOE user facility at Argonne National Laboratory. Read more July 26, 2016

  10. Effect of pH on the heavy metal-clay mineral interaction

    SciTech Connect (OSTI)

    Altyn, O.; Oezbelge, H.O.; Dogu, T.; Oezbelge, T.A.

    1997-12-31

    Adsorption and ion exchange of Pb and Cd on the surface of kaolinite and montmorillonite were studied with a strong emphasis on the pH values of solutions containing heavy metal ions. The pH range studied was 2.5 - 9. For kaolinite at a clay/solution ratio of 1/10 (w/w), Pb removal changes from 20 to 30% for an initial Pb concentration of 1640 ppm, and Cd removal changes from 10 to 20% for an initial Cd concentration of 1809 ppm. Due to its high exchange capacity, montmorillonite can remove more heavy metal than kaolinite. Removal rates for montmorillonite can reach up to 90% for both Pb and Cd. In the pH range of 3-6, there is a plateau for the removal rates. At pH values higher than 6, removal seems to increase artificially due to the precipitation of heavy metals. Under similar conditions for both clays, the rate of removal of Pb is always higher than that of Cd. As the pH value decreases for montmorillonite, there is a strong tendency for decreased surface area and swelling, as indicated by BET surface area measurements, adsorbed layer thickness and pore size distribution data. In the range of pH values studied, X-ray diffraction analysis showed the appearance of a characteristic (001) peak for montmorillonite, indicating that the crystalline structure of the clay was intact during the experiments.

  11. Theory of signal and noise in double-gated nanoscale electronic pH sensors

    SciTech Connect (OSTI)

    Go, Jonghyun; Nair, Pradeep R.; Alam, Muhammad A.

    2012-08-01

    The maximum sensitivity of classical nanowire (NW)-based pH sensors is defined by the Nernst limit of 59 mV/pH. For typical noise levels in ultra-small single-gated nanowire sensors, the signal-to-noise ratio is often not sufficient to resolve pH changes necessary for a broad range of applications. Recently, a new class of double-gated devices was demonstrated to offer apparent 'super-Nernstian' response (>59 mV/pH) by amplifying the original pH signal through innovative biasing schemes. However, the pH-sensitivity of these nanoscale devices as a function of biasing configurations, number of electrodes, and signal-to-noise ratio (SNR) remains poorly understood. Even the basic question such as 'Do double-gated sensors actually resolve smaller changes in pH compared to conventional single-gated sensors in the presence of various sources of noise?' remains unanswered. In this article, we provide a comprehensive numerical and analytical theory of signal and noise of double-gated pH sensors to conclude that, while the theoretical lower limit of pH-resolution does not improve for double-gated sensors, this new class of sensors does improve the (instrument-limited) pH resolution.

  12. Effect of CO{sub 2} air mixtures on the pH of air-stripped water...

    Office of Scientific and Technical Information (OSTI)

    pH of air-stripped water at Treatment Facility D Citation Details In-Document Search Title: Effect of COsub 2 air mixtures on the pH of air-stripped water at Treatment Facility ...

  13. Influence of acidic pH on hydrogen and acetate production by an electrosynthetic microbiome

    DOE PAGES-Beta [OSTI]

    LaBelle, Edward V.; Marshall, Christopher W.; Gilbert, Jack A.; May, Harold D.; Battista, John R.

    2014-10-15

    Production of hydrogen and organic compounds by an electrosynthetic microbiome using electrodes and carbon dioxide as sole electron donor and carbon source, respectively, was examined after exposure to acidic pH (~5). Hydrogen production by biocathodes poised at -600 mV vs. SHE increased>100-fold and acetate production ceased at acidic pH, but ~5–15 mM (catholyte volume)/day acetate and>1,000 mM/day hydrogen were attained at pH ~6.5 following repeated exposure to acidic pH. Cyclic voltammetry revealed a 250 mV decrease in hydrogen overpotential and a maximum current density of 12.2 mA/cm2 at -765 mV (0.065 mA/cm2 sterile control at -800 mV) by the Acetobacterium-dominatedmore » community. Supplying -800 mV to the microbiome after repeated exposure to acidic pH resulted in up to 2.6 kg/m3/day hydrogen (≈2.6 gallons gasoline equivalent), 0.7 kg/m3/day formate, and 3.1 kg/m3/day acetate ( = 4.7 kg CO2 captured).« less

  14. Influence of acidic pH on hydrogen and acetate production by an electrosynthetic microbiome

    SciTech Connect (OSTI)

    LaBelle, Edward V.; Marshall, Christopher W.; Gilbert, Jack A.; May, Harold D.; Battista, John R.

    2014-10-15

    Production of hydrogen and organic compounds by an electrosynthetic microbiome using electrodes and carbon dioxide as sole electron donor and carbon source, respectively, was examined after exposure to acidic pH (~5). Hydrogen production by biocathodes poised at -600 mV vs. SHE increased>100-fold and acetate production ceased at acidic pH, but ~5–15 mM (catholyte volume)/day acetate and>1,000 mM/day hydrogen were attained at pH ~6.5 following repeated exposure to acidic pH. Cyclic voltammetry revealed a 250 mV decrease in hydrogen overpotential and a maximum current density of 12.2 mA/cm2 at -765 mV (0.065 mA/cm2 sterile control at -800 mV) by the Acetobacterium-dominated community. Supplying -800 mV to the microbiome after repeated exposure to acidic pH resulted in up to 2.6 kg/m3/day hydrogen (≈2.6 gallons gasoline equivalent), 0.7 kg/m3/day formate, and 3.1 kg/m3/day acetate ( = 4.7 kg CO2 captured).

  15. pH control of the structure, composition, and catalytic activity of sulfated zirconia

    SciTech Connect (OSTI)

    Ivanov, Vladimir K.; Materials Science Department, Moscow State University, Moscow 119991 ; Baranchikov, Alexander Ye.; Kopitsa, Gennady P.; Lermontov, Sergey A.; Yurkova, Lyudmila L.; Gubanova, Nadezhda N.; Petersburg Nuclear Physics Institute, Orlova Roscha, Gatchina 188300 ; Ivanova, Olga S.; Lermontov, Anatoly S.; Rumyantseva, Marina N.; Vasilyeva, Larisa P.; Sharp, Melissa; Pranzas, P. Klaus; Tretyakov, Yuri D.

    2013-02-15

    We report a detailed study of structural and chemical transformations of amorphous hydrous zirconia into sulfated zirconia-based superacid catalysts. Precipitation pH is shown to be the key factor governing structure, composition and properties of amorphous sulfated zirconia gels and nanocrystalline sulfated zirconia. Increase in precipitation pH leads to substantial increase of surface fractal dimension (up to {approx}2.7) of amorphous sulfated zirconia gels, and consequently to increase in specific surface area (up to {approx}80 m{sup 2}/g) and simultaneously to decrease in sulfate content and total acidity of zirconia catalysts. Complete conversion of hexene-1 over as synthesized sulfated zirconia catalysts was observed even under ambient conditions. - Graphical abstract: Surface fractal dimension of amorphous sulfated zirconia and specific surface area and catalytic activity of crystalline sulfated zirconia as a function of precipitation pH. Highlights: Black-Right-Pointing-Pointer Structural transformation of amorphous hydrous zirconia into sulfated zirconia is studied. Black-Right-Pointing-Pointer Precipitation pH controls surface fractal dimension of amorphous zirconia gels. Black-Right-Pointing-Pointer Precipitation pH is the key factor governing properties of sulfated zirconia.

  16. Structural Bioinformatics-Based Prediction of Exceptional Selectivity of p38 MAP Kinase Inhibitor PH-797804

    SciTech Connect (OSTI)

    Xing, Li; Shieh, Huey S.; Selness, Shaun R.; Devraj, Rajesh V.; Walker, John K.; Devadas, Balekudru; Hope, Heidi R.; Compton, Robert P.; Schindler, John F.; Hirsch, Jeffrey L.; Benson, Alan G.; Kurumbail, Ravi G.; Stegeman, Roderick A.; Williams, Jennifer M.; Broadus, Richard M.; Walden, Zara; Monahan, Joseph B.; Pfizer

    2009-07-24

    PH-797804 is a diarylpyridinone inhibitor of p38{alpha} mitogen-activated protein (MAP) kinase derived from a racemic mixture as the more potent atropisomer (aS), first proposed by molecular modeling and subsequently confirmed by experiments. On the basis of structural comparison with a different biaryl pyrazole template and supported by dozens of high-resolution crystal structures of p38{alpha} inhibitor complexes, PH-797804 is predicted to possess a high level of specificity across the broad human kinase genome. We used a structural bioinformatics approach to identify two selectivity elements encoded by the TXXXG sequence motif on the p38{alpha} kinase hinge: (i) Thr106 that serves as the gatekeeper to the buried hydrophobic pocket occupied by 2,4-difluorophenyl of PH-797804 and (ii) the bidentate hydrogen bonds formed by the pyridinone moiety with the kinase hinge requiring an induced 180{sup o} rotation of the Met109-Gly110 peptide bond. The peptide flip occurs in p38{alpha} kinase due to the critical glycine residue marked by its conformational flexibility. Kinome-wide sequence mining revealed rare presentation of the selectivity motif. Corroboratively, PH-797804 exhibited exceptionally high specificity against MAP kinases and the related kinases. No cross-reactivity was observed in large panels of kinase screens (selectivity ratio of >500-fold). In cellular assays, PH-797804 demonstrated superior potency and selectivity consistent with the biochemical measurements. PH-797804 has met safety criteria in human phase I studies and is under clinical development for several inflammatory conditions. Understanding the rationale for selectivity at the molecular level helps elucidate the biological function and design of specific p38{alpha} kinase inhibitors.

  17. PH adjustment of power plant cooling water with flue gas/fly ash

    SciTech Connect (OSTI)

    Brady, Patrick V.; Krumhansl, James L.

    2015-09-22

    A system including a vessel including a heat source and a flue; a turbine; a condenser; a fluid conduit circuit disposed between the vessel, the turbine and the condenser; and a diverter coupled to the flue to direct a portion of an exhaust from the flue to contact with a cooling medium for the condenser water. A method including diverting a portion of exhaust from a flue of a vessel; modifying the pH of a cooling medium for a condenser with the portion of exhaust; and condensing heated fluid from the vessel with the pH modified cooling medium.

  18. Influence of pH on the quantum-size-controlled photoelectrochemical etching

    Office of Scientific and Technical Information (OSTI)

    of epitaxial InGaN quantum dots (Journal Article) | SciTech Connect Journal Article: Influence of pH on the quantum-size-controlled photoelectrochemical etching of epitaxial InGaN quantum dots Citation Details In-Document Search Title: Influence of pH on the quantum-size-controlled photoelectrochemical etching of epitaxial InGaN quantum dots Illumination by a narrow-band laser has been shown to enable photoelectrochemical (PEC) etching of InGaN thin films into quantum dots with sizes

  19. Aqueous biphasic extraction process with pH and particle control

    DOE Patents [OSTI]

    Chaiko, D.J.; Mensah-Biney, R.

    1995-05-02

    A process for aqueous biphasic extraction of metallic oxides and the like from substances containing silica. Control of media pH enables efficient and effective partition of mixture components. The inventive method may be employed to remove excess silica from kaolin clay. 2 figs.

  20. Adsorption behavior of copper and zinc in soils: Influence of pH on adsorption characteristics

    SciTech Connect (OSTI)

    Msaky, J.J. ); Calvet, R. )

    1990-08-01

    The authors studied adsorption of copper and zinc on three different soils: a brown silty soil, an Oxisol, and a Podzol. They determined the amounts adsorbed and the shapes of adsorption isotherms as a function of the pH of the adsorbing medium at a constant ionic strength. The adsorbed amount-pH relationship depended strongly on the natures of the metallic cation and of the soil. The pH greatly influenced the characteristics of adsorption isotherms. They based interpretation on the variations with the pH of both adsorbent affinity for the metal in relation to the surface electric charge and chemical speciation in solution. The adsorption mechanism in the Oxisol probably involves monohydroxylated cations but is more determined by bivalent cations in the brown silty soil and the Podzol. From a general point of view, adsorption of copper and zinc cannot be represented with a single adsorption constant, but should be described by adsorption isotherms obtained at various pH values.

  1. Dissolved oxygen and pH relationships in northern Australian mangrove waterways

    SciTech Connect (OSTI)

    Boto, K.G.; Bunt, J.S.

    1981-01-01

    Consistent, highly significant linear correlations (R2 greater than or equal to 0.8) between pH and dissolved oxygen levels have been found in northern Australian mangrove waterways. These properties seem to be influenced by dissolved organic matter, mainly polyphenolic compounds, present in the creeks and tidal channel waters.

  2. Aqueous biphasic extraction process with pH and particle control

    DOE Patents [OSTI]

    Chaiko, David J.; Mensah-Biney, R.

    1995-01-01

    A process for aqueous biphasic extraction of metallic oxides and the like from substances containing silica. Control of media pH enables efficient and effective partition of mixture components. The inventive method may be employed to remove excess silica from kaolin clay.

  3. Proton mediated control of biochemical reactions with bioelectronic pH modulation

    DOE PAGES-Beta [OSTI]

    Deng, Yingxin; Miyake, Takeo; Keene, Scott; Josberger, Erik E.; Rolandi, Marco

    2016-04-07

    In Nature, protons (H+) can mediate metabolic process through enzymatic reactions. Examples include glucose oxidation with glucose dehydrogenase to regulate blood glucose level, alcohol dissolution into carboxylic acid through alcohol dehydrogenase, and voltage-regulated H+ channels activating bioluminescence in firefly and jellyfish. Artificial devices that control H+ currents and H+ concentration (pH) are able to actively influence biochemical processes. Here, we demonstrate a biotransducer that monitors and actively regulates pH-responsive enzymatic reactions by monitoring and controlling the flow of H+ between PdHx contacts and solution. The present transducer records bistable pH modulation from an “enzymatic flip-flop” circuit that comprises glucose dehydrogenasemore » and alcohol dehydrogenase. Furthermore, the transducer also controls bioluminescence from firefly luciferase by affecting solution pH.« less

  4. Thermoluminescence Characteristics of Nanocrystalline LiF Phosphors Synthesized at Different pH Values

    SciTech Connect (OSTI)

    Sharma, A. K.; Dogra, R.; Kumar, Shalendra; Mishra, S. K.; Lochab, S. P.; Kumar, Ravi

    2011-07-15

    Nanocrystalline lithium fluoride (LiF) phosphors have been prepared by the chemical co-precipitation method at different pH values (7.0, 8.0, 9.0). The formation of nanocrystalline structure has been confirmed by X-ray diffraction and transmission electron microscope. The thermolumniscence (TL) properties of LiF phosphors irradiated with gamma rays at different doses have been studied. The analysis of TL glow curve has revealed the existence of two well resolved glow peaks, one low temperature peak at around 145 deg. C and other one at higher temperature around 375 deg. C. The LiF nano-crystallites synthesized at 8.00 pH have been found to show maximum TL intensity at studied gamma doses (0.1 Gy-15 Gy).

  5. J-Lab scientist wins award for graphene invention he developed as a Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    student at William & Mary (The College of William and Mary, Ideation) | Jefferson Lab J-Lab scientist wins award for graphene invention he developed as a Ph.D. student at William & Mary (The College of William and Mary, Ideation) External Link: http://www.wm.edu/research/ideation/science-and-technology/j-lab-scientist-wins-... By jlab_admin on Fri, 2012-06-1

  6. SAN DIEGO SUPERCOMPUTER CENTER Glenn K. Lockwood, Ph.D.! User Services Group!

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    CENTER Glenn K. Lockwood, Ph.D.! User Services Group! San Diego Supercomputer Center! glock@sdsc.edu! Data-Intensive Computing at SDSC! SAN DIEGO SUPERCOMPUTER CENTER San Diego Supercomputer Center! * ORU within UC San Diego! * XSEDE L1 Service Provider! * Gordon (Data-intensive HPC)! * Data Oasis (4 PB Lustre FS)! * Comet (2 PF capacity, 2015)! * Data-intensive computing! * LHC/CMS (OSG) - 125 TB! * Genomics (industry) - 50+ TB! * Hadoop/YARN/Spark support! SAN DIEGO SUPERCOMPUTER CENTER *

  7. pH Adjustment of Power Plant Cooling Water with Flue Gas/ Fly Ash - Energy

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Innovation Portal Advanced Materials Advanced Materials Find More Like This Return to Search pH Adjustment of Power Plant Cooling Water with Flue Gas/ Fly Ash Sandia National Laboratories Contact SNL About This Technology Publications: PDF Document Publication Market Sheet (547 KB) Technology Marketing Summary Increased recycling of power plant cooling water calls for low-cost means of preventing the formation of calcium carbonate and silicate scale. Hardness (Ca and Mg) and silica are two

  8. Method of determining pH by the alkaline absorption of carbon dioxide

    DOE Patents [OSTI]

    Hobbs, David T.

    1992-01-01

    A method for measuring the concentration of hydroxides in alkaline solutions in a remote location using the tendency of hydroxides to absorb carbon dioxide. The method includes the passing of carbon dioxide over the surface of an alkaline solution in a remote tank before and after measurements of the carbon dioxide solution. A comparison of the measurements yields the absorption fraction from which the hydroxide concentration can be calculated using a correlation of hydroxide or pH to absorption fraction.

  9. Walter L. Warnick, Ph.D., Former Director | OSTI, US Dept of Energy Office

    Office of Scientific and Technical Information (OSTI)

    of Scientific and Technical Information Walter L. Warnick, Ph.D., Former Director WorldWideScience Alliance Signing Ceremony, June 12, 2008 [Photograph by: Korean Institute of Science and Technology Information] The WorldWideScience Alliance was formalized on June 12, 2008, in Seoul, Korea, by officials from 11 organizations representing 38 countries. WorldWideScience.org is the online gateway to science information issued from nations around the world. The signing ceremony was the

  10. Diamond formation due to a pH drop during fluid–rock interactions

    SciTech Connect (OSTI)

    Sverjensky, Dimitri A.; Huang, Fang

    2015-11-03

    Diamond formation has typically been attributed to redox reactions during precipitation from fluids or magmas. Either the oxidation of methane or the reduction of carbon dioxide has been suggested, based on simplistic models of deep fluids consisting of mixtures of dissolved neutral gas molecules without consideration of aqueous ions. The role of pH changes associated with water–silicate rock interactions during diamond formation is unknown. Here we show that diamonds could form due to a drop in pH during water–rock interactions. We use a recent theoretical model of deep fluids that includes ions, to show that fluid can react irreversibly with eclogite at 900 °C and 5.0 GPa, generating diamond and secondary minerals due to a decrease in pH at almost constant oxygen fugacity. Overall, our results constitute a new quantitative theory of diamond formation as a consequence of the reaction of deep fluids with the rock types that they encounter during migration. Diamond can form in the deep Earth during water–rock interactions without changes in oxidation state.

  11. Synthesis and new structure shaping mechanism of silica particles formed at high pH

    SciTech Connect (OSTI)

    Zhang, Henan; Zhao, Yu; Akins, Daniel L.

    2012-10-15

    For the sol-gel synthesis of silica particles under high pH catalytic conditions (pH>12) in water/ethanol solvent, we have deduced that the competing dynamics of chemical etching and sol-gel process can explain the types of silica particles formed and their morphologies. We have demonstrated that emulsion droplets that are generated by adding tetraethyl orthosilicate (TEOS) to a water-ethanol solution serve as soft templates for hollow spherical silica (1-2 {mu}m). And if the emulsion is converted by the sol-gel process, one finds that suspended solid silica spheres of diameter of {approx}900 nm are formed. Moreover, several other factors are found to play fundamental roles in determining the final morphologies of silica particles, such as by variation of the pH (in our case, using OH{sup -}) to a level where condensation dominates; by changing the volume ratios of water/ethanol; and using an emulsifier (specifically, CTAB) - Graphical abstract: 'Local chemical etching' and sol-gel process have been proposed to interpret the control of morphologies of silica particles through varying initial pHs in syntheses. Highlights: Black-Right-Pointing-Pointer Different initial pHs in our syntheses provides morphological control of silica particles. Black-Right-Pointing-Pointer 'Local chemical etching' and sol-gel process describes the formation of silica spheres. Black-Right-Pointing-Pointer The formation of emulsions generates hollow silica particles.

  12. Diamond formation due to a pH drop during fluid–rock interactions

    DOE PAGES-Beta [OSTI]

    Sverjensky, Dimitri A.; Huang, Fang

    2015-11-03

    Diamond formation has typically been attributed to redox reactions during precipitation from fluids or magmas. Either the oxidation of methane or the reduction of carbon dioxide has been suggested, based on simplistic models of deep fluids consisting of mixtures of dissolved neutral gas molecules without consideration of aqueous ions. The role of pH changes associated with water–silicate rock interactions during diamond formation is unknown. Here we show that diamonds could form due to a drop in pH during water–rock interactions. We use a recent theoretical model of deep fluids that includes ions, to show that fluid can react irreversibly withmore » eclogite at 900 °C and 5.0 GPa, generating diamond and secondary minerals due to a decrease in pH at almost constant oxygen fugacity. Overall, our results constitute a new quantitative theory of diamond formation as a consequence of the reaction of deep fluids with the rock types that they encounter during migration. Diamond can form in the deep Earth during water–rock interactions without changes in oxidation state.« less

  13. Recovery of carboxylic acids at pH greater than pK{sub a}

    SciTech Connect (OSTI)

    Tung, L.A.

    1993-08-01

    Economics of producing carboxylic acids by fermentation is often dominated, not by the fermentation cost, but by the cost of recovering and purifying the acids from dilute aqueous solutions. Experiments were performed to measure uptakes of lactic and succinic acids as functions of pH by basic polymeric sorbents; sorbent regeneration was also tested. Performance at pH > pK{sub a} and regenerability depend on sorbent basicity; apparent pK{sub a} and monomer pK{sub a} can be used to predict sorbent performance. Two basic amine extractants, Alamine 336 and Amberlite LA-2, in were also studied; they are able to sustain capacity to higher pH in diluents that stabilize the acid-amine complex through H bonding. Secondary amines perform better than tert-amines in diluents that solvate the additional proton. Competitive sulfate and phosphate, an interference in fermentation, are taken up by sorbents more strongly than by extractants. The third step in the proposed fermentation process, the cracking of the trimethylammonium (TMA) carboxylate, was also examined. Because lactic acid is more soluble and tends to self-esterify, simple thermal cracking does not remove all TMA; a more promising approach is to esterify the TMA lactate by reaction with an alcohol.

  14. In Situ Spectrophotometric Determination of pH under Geologic CO2 Sequestration Conditions: Method Development and Application

    SciTech Connect (OSTI)

    Shao, Hongbo; Thompson, Christopher J.; Qafoku, Odeta; Cantrell, Kirk J.

    2013-02-25

    Injecting massive amounts of CO2 into deep geologic formations will cause a range of coupled thermal, hydrodynamic, mechanical, and chemical changes. A significant perturbation in water-saturated formations is the pH drop in the reservoir fluids due to CO2 dissolution. Knowing the pH under geological CO2 sequestration conditions is important for a better understanding of the short- and long-term risks associated with geological CO2 sequestration and will help in the design of sustainable sequestration projects. Most previous studies on CO2-rock-brine interactions have utilized thermodynamic modeling to estimate the pH. In this work, a spectrophotometric method was developed to determine the in-situ pH in CO2-H2O-NaCl systems in the presence and absence of reservoir rock by observing the spectra of a pH indicator, bromophenol blue, with a UV-visible spectrophotometer. Effects of temperature, pressure, and ionic strength on the pH measurement were evaluated. Measured pH values in CO2-H2O-NaCl systems were compared with several thermodynamic models. Results indicate that bromophenol blue can be used to accurately determine the pH of brine in contact with supercritical CO2 under geologic CO2 sequestration conditions.

  15. Influence of pH on the adsorption of uranium ions by oxidized activated carbon and chitosan

    SciTech Connect (OSTI)

    Park, G.I.; Park, H.S.; Woo, S.I.

    1999-03-01

    The adsorption characteristics of uranyl ions on surface-oxidized carbon were compared with those of powdered chitosan over a wide pH range. In particular, an extensive analysis was made on solution pH variation during the adsorption process or after adsorption equilibrium. Uranium adsorption on the two adsorbents was revealed to be strongly dependent on the initial pH of the solution. A quantitative comparison of the adsorption capacities of the two adsorbents was made, based on the isotherm data obtained at initial pH 3, 4, and 5. In order to analyze the adsorption kinetics incorporated with pH effects, batch experiments at various initial pH values were carried out, and solution pH profiles with the adsorption time were also evaluated. The breakthrough behavior in a column packed with oxidized carbon was also characterized with respect to the variation of effluent pH. Based on these experimental results, the practical applicability of oxidized carbon for uranium removal from acidic radioactive liquid waste was suggested.

  16. ASES Solar 2003 Americas Secure Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Florida Solar Energy CenterUniversity of Central Florida 1679 Clearlake Road, Cocoa, Florida 32922, USA (321) 638-1000 All rights reserved. Disclaimer The Florida Solar Energy ...

  17. ASE/CAGI Meeting about Compressors and Compressed Air System...

    Energy Savers

    ASECAGI Meeting about Compressors and Compressed Air System Efficiency On April 25, 2013, several representatives of energy ... Natural Gas Transmission, Storage and Distribution System ...

  18. Crop uptake and extractability of cadmium in soils naturally high in metals at different pH levels

    SciTech Connect (OSTI)

    Singh, B.R.; Almas, A.; Narwal, R.P.; Jeng, A.S.

    1995-12-01

    A greenhouse experiment was conducted for three years to study the effect of different pH levels on metal concentrations in plants and the cadmium (Cd) extractability by DTPA and NH{sub 4}NO{sub 3}. The soils used were an alum shale (clay loam) and a moraine (loam), which were adjusted to pH levels of 5.5, 6.5, 7.0, and 7.5. Wheat (Triticum aestivum), carrot (Daucus carota L.), and lettuce (Lactuca sativa) were grown as test crops. Crop yields were not consistently affected at increasing soil pH levels. The concentration of Cd in plant species decreased with increasing soil pH in both soils and in all three years. Significant concentration differences between soil pH levels were only seen in wheat and carrot crops. Increasing soil pH also decreased the nickel (Ni) and zinc (Zn) concentrations in plants in the first year crop but the copper (Cu) concentration was not consistently affected by soil pH. The effect of pH was more pronounced in the moraine then the alum shale soil. The DTPA-and NH{sub 4}NO{sub 3}-extractable Cd was decreased with the increasing soil pH and the pH effect was more pronounced with NH{sub 4}NO{sub 3} extractable Cd. Both extractants were found equally effective in relation to the Cd concentration in plants in this study. 33 refs., 2 figs., 7 tabs.

  19. PH Sensitive Polymers for Improving Reservoir Sweep and Conformance Control in Chemical Flooring

    SciTech Connect (OSTI)

    Mukul Sharma; Steven Bryant; Chun Huh

    2008-03-31

    There is an increasing opportunity to recover bypassed oil from depleted, mature oilfields in the US. The recovery factor in many reservoirs is low due to inefficient displacement of the oil by injected fluids (typically water). The use of chemical flooding methods to increase recovery efficiencies is severely constrained by the inability of the injected chemicals to contact the bypassed oil. Low sweep efficiencies are the primary cause of low oil recoveries observed in the field in chemical flooding operations even when lab studies indicate high oil recovery efficiency. Any technology that increases the ability of chemical flooding agents to better contact the remaining oil and reduce the amount of water produced in conjunction with the produced oil will have a significant impact on the cost of producing oil domestically in the US. This translates directly into additional economically recoverable reserves, which extends the economic lives of marginal and mature wells. The objective of this research project was to develop a low-cost, pH-triggered polymer for use in IOR processes to improve reservoir sweep efficiency and reservoir conformance in chemical flooding. Rheological measurements made on the polymer solution, clearly show that it has a low viscosity at low pH and exhibits a sudden increase in viscosity (by 2 orders of magnitude or more) at a pH of 3.5 to 4. This implies that the polymer would preferentially flow into zones containing water since the effective permeability to water is highest in these zones. As the pH of the zone increases due to the buffering capacity of the reservoir rock, the polymer solution undergoes a liquid to gel transition causing a sharp increase in the viscosity of the polymer solution in these zones. This allows operationally robust, in-depth conformance treatment of such water bearing zones and better mobility control. The rheological properties of HPAM solutions were measured. These include: steady-shear viscosity and

  20. Development of On-Line Spectroscopic pH Monitoring for Nuclear Fuel Reprocessing Plants: Weak Acid Schemes

    SciTech Connect (OSTI)

    Casella, Amanda J.; Hylden, Laura R.; Campbell, Emily L.; Levitskaia, Tatiana G.; Peterson, James M.; Smith, Frances N.; Bryan, Samuel A.

    2015-05-19

    Knowledge of real-time solution properties and composition is a necessity for any spent nuclear fuel reprocessing method. Metal-ligand speciation in aqueous solutions derived from the dissolved commercial spent fuel is highly dependent upon the acid concentration/pH, which influences extraction efficiency and the resulting speciation in the organic phase. Spectroscopic process monitoring capabilities, incorporated in a counter current centrifugal contactor bank, provide a pathway for on-line real-time measurement of solution pH. The spectroscopic techniques are process-friendly and can be easily configured for on-line applications, while classic potentiometric pH measurements require frequent calibration/maintenance and have poor long-term stability in aggressive chemical and radiation environments. Our research is focused on developing a general method for on-line determination of pH of aqueous solutions through chemometric analysis of Raman spectra. Interpretive quantitative models have been developed and validated under the range of chemical composition and pH using a lactic acid/lactate buffer system. The developed model was applied to spectra obtained on-line during solvent extractions performed in a centrifugal contactor bank. The model predicted the pH within 11% for pH > 2, thus demonstrating that this technique could provide the capability of monitoring pH on-line in applications such as nuclear fuel reprocessing.

  1. Davinia Salvachúa Rodríguez, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Davinia Salvachúa Rodríguez Davinia Salvachúa Rodríguez, Ph.D. Staff Scientist Davinia.Salvachua@nrel.gov | 303-384-7699 Research Interests Lignin conversion by fungi and bacteria to value-added compounds (Figure 1) Ligninolytic enzymes: a tool for lignin depolymerization (Figure 1) Biomass sugars upgrading to advanced biofuels and valuable co-products (Figure 2) Development of fermentation strategies to produce diverse organic acids (i.e. succinic acid, muconic acid, hexanoic acid) by

  2. Method of determining pH by the alkaline absorption of carbon dioxide

    DOE Patents [OSTI]

    Hobbs, D.T.

    1992-10-06

    A method is described for measuring the concentration of hydroxides in alkaline solutions in a remote location using the tendency of hydroxides to absorb carbon dioxide. The method includes the passing of carbon dioxide over the surface of an alkaline solution in a remote tank before and after measurements of the carbon dioxide solution. A comparison of the measurements yields the absorption fraction from which the hydroxide concentration can be calculated using a correlation of hydroxide or pH to absorption fraction. 2 figs.

  3. ORISE report shows number of health physics Ph.D.s declined in 2009

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ORISE report shows number of health physics Ph.D.s declined in 2009 FOR IMMEDIATE RELEASE June 15, 2010 FY10-37 OAK RIDGE, Tenn.-Health physics undergraduate degrees increased slightly in 2009 continuing a six-year trend, but doctorate degrees reported a 40-year low, says a report recently released by the Oak Ridge Institute for Science and Education. The report also showed the number of M.S. degrees was 21 percent less than in 2008. The ORISE report, Health Physics Enrollments and Degrees

  4. ORISE: After a Brief Decline, Recent Foreign Ph.D. Graduates are Staying in

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    the U.S. at Near-record Levels After a Brief Decline, Recent Foreign Ph.D. Graduates are Staying in the U.S. at Near-record Levels FOR IMMEDIATE RELEASE: Feb. 3, 2010 FY10-20 OAK RIDGE, Tenn.-Two years after completing doctoral degrees at United States (U.S.) universities, 67% of foreign students graduating in 2005 remained in the U.S., according to a new report issued by the Oak Ridge Institute for Science and Education (ORISE) and funded by the National Science Foundation (NSF). This is a

  5. Validation of pH meters, balances and other supporting laboratory equipment

    SciTech Connect (OSTI)

    Noon, J.P.

    1995-12-01

    Good Laboratory Practice Standards specify that equipment used for the generation, measurement or assessment of data shall be adequately tested, calibrated and/or standardized, inspected, cleaned and maintained. The validation of less sophisticated instruments and equipment, such as pH meters and balances, is often given little attention when validation procedures are discussed. In this presentation the salient factors to consider when establishing validation strategies for several specific ancillary pieces of equipment will be reviewed. In addition, practical procedures including form for entering validation data and frequency of validation operations will be presented.

  6. Monomer volume fraction profiles in pH responsive planar polyelectrolyte brushes

    DOE PAGES-Beta [OSTI]

    Mahalik, Jyoti P.; Yang, Yubo; Deodhar, Chaitra V.; Ankner, John Francis; Lokitz, Bradley S.; Kilbey, II, S. Michael; Sumpter, Bobby G.; Kumar, Rajeev

    2016-03-06

    Spatial dependencies of monomer volume fraction profiles of pH responsive polyelectrolyte brushes were investigated using field theories and neutron reflectivity experiments. In particular, planar polyelectrolyte brushes in good solvent were studied and direct comparisons between predictions of the theories and experimental measurements are presented. The comparisons between the theories and the experimental data reveal that solvent entropy and ion-pairs resulting from adsorption of counterions from the added salt play key roles in affecting the monomer distribution and must be taken into account in modeling polyelectrolyte brushes. Furthermore, the utility of this physics-based approach based on these theories for the predictionmore » and interpretation of neutron reflectivity profiles in the context of pH responsive planar polyelectrolyte brushes such as polybasic poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) and polyacidic poly(methacrylic acid) (PMAA) brushes is demonstrated. The approach provides a quantitative way of estimating molecular weights of the polymers polymerized using surface-initiated atom transfer radical polymerization.« less

  7. Measurements of Eh and pH in Compacted MX-80 Bentonite

    SciTech Connect (OSTI)

    Carlsson, Torbjoern; Muurinen, Arto

    2007-07-01

    The low-content free water and high swelling pressure in compacted bentonite, planned to be used as a buffer in nuclear waste repositories, create adverse conditions for direct measurements of the chemical conditions. This paper presents laboratory results from online measurements with Eh and pH electrodes in water-saturated compacted MX-80 bentonite. The Eh was measured with Au and Pt wires as electrodes, while the pH was determined with IrOx electrodes. The latter were prepared in accordance with the method by Yao et al. [1]. The measurements were carried out in two types of cells: 'squeezing cells' and 'diffusion cells'. The squeezing cell excludes almost completely all chemical interactions between the sample and the surrounding environment outside the cell. The diffusion cell, on the other hand, contains a sample that stays in contact with an external solution and therefore allows following of the physico-chemical interaction between the sample and the external solution. The measuring electrodes were positioned inside the cell in the compacted bentonite, while the reference electrode was positioned outside the cell. (authors)

  8. Nonlinear ultrasonic characterization of precipitation in 17-4PH stainless steel

    SciTech Connect (OSTI)

    Matlack, Kathryn; Bradley, Harrison A.; Thiele, Sebastian; Kim, Jin-Yeon; Wall, James J.; Jung, Hee Joon; Qu, Jianmin; Jacobs, Laurence J.

    2015-04-01

    The extension of operational lifetime of most US nuclear reactors will cause reactor pressure vessel to be exposed to increased levels of neutron radiation damage. This research is part of a broader effort to develop a nondestructive evaluation technique to monitor radiation damage in reactor pressure vessel steels. The main contributor to radiation embrittlement in these steels is the formation of copper-rich precipitates. In this work, a precipitate hardenable martensitic alloy, 17-4PH stainless steel is exposed to thermal aging treatments, and used as a surrogate material to study the effects of copper precipitates on the measured acoustic nonlinearity parameter. Previous work has demonstrated the effectiveness of these nonlinear ultrasonic (NLU) measurements in the characterization of radiation-induced microstructural changes in neutron irradiated reactor pressure vessel steels. NLU measurements using Rayleigh surface waves are performed on 17-4PH samples subjected to isothermal aging. NLU measurements are interpreted with hardness, thermo-electric power, TEM, and atom probe tomography measurements. The Rayleigh wave measurements showed a decrease in the acoustic nonlinearity parameter with increasing aging time, consistent with evidence of increasing number density of nucleated precipitates.

  9. Atomic structure of the sweet-tasting protein thaumatin I at pH 8.0 reveals the large disulfide-rich region in domain II to be sensitive to a pH change

    SciTech Connect (OSTI)

    Masuda, Tetsuya; Ohta, Keisuke; Mikami, Bunzo; Kitabatake, Naofumi; Tani, Fumito

    2012-03-02

    Highlights: Black-Right-Pointing-Pointer Structure of a recombinant thaumatin at pH 8.0 determined at a resolution of 1.0 A. Black-Right-Pointing-Pointer Substantial fluctuations of a loop in domain II was found in the structure at pH 8.0. Black-Right-Pointing-Pointer B-factors for Lys137, Lys163, and Lys187 were significantly affected by pH change. Black-Right-Pointing-Pointer An increase in mobility might play an important role in the heat-induced aggregation. -- Abstract: Thaumatin, an intensely sweet-tasting plant protein, elicits a sweet taste at 50 nM. Although the sweetness remains when thaumatin is heated at 80 Degree-Sign C for 4 h under acid conditions, it rapidly declines when heating at a pH above 6.5. To clarify the structural difference at high pH, the atomic structure of a recombinant thaumatin I at pH 8.0 was determined at a resolution of 1.0 A. Comparison to the crystal structure of thaumatin at pH 7.3 and 7.0 revealed the root-mean square deviation value of a C{alpha} atom to be substantially greater in the large disulfide-rich region of domain II, especially residues 154-164, suggesting that a loop region in domain II to be affected by solvent conditions. Furthermore, B-factors of Lys137, Lys163, and Lys187 were significantly affected by pH change, suggesting that a striking increase in the mobility of these lysine residues, which could facilitate a reaction with a free sulfhydryl residue produced via the {beta}-elimination of disulfide bonds by heating at a pH above 7.0. The increase in mobility of lysine residues as well as a loop region in domain II might play an important role in the heat-induced aggregation of thaumatin above pH 7.0.

  10. Lack of correlation between extended pH monitoring and scintigraphy in the evaluation of infants with gastroesophageal reflux

    SciTech Connect (OSTI)

    Tolia, V.; Calhoun, J.A.; Kuhns, L.R.; Kauffman, R.E. )

    1990-05-01

    Sixty-nine infants younger than 1 year of age, with symptoms of persistent vomiting, recurrent choking, apnea, persistent cough, or stridor, were evaluated for gastroesophageal reflux. All infants underwent extended intraesophageal pH monitoring for 16 to 24 hours as well as gastroesophageal scintigraphy with technetium 99m sulfur colloid to study the correlation between the two tests. Forty-eight infants exhibited reflux with extended pH monitoring whereas 46 infants showed reflux with scintigraphy. However, the diagnosis of reflux in individual patients by extended pH monitoring corresponded poorly with the diagnosis of reflux in the same patients by scintigraphy. Similarly, no correlation was observed between extended pH monitoring and scintigraphy results, whether expressed as percent gastric emptying or as gastroesophageal reflux ratio. We conclude that extended pH monitoring and scintigraphy measure different pathophysiologic phenomena and detect reflux under different conditions. The ability of these tests to detect reflux may be complementary and they may be of greatest value when used together to enhance the sensitivity and specificity of the diagnostic evaluation. Extended pH monitoring and scintigraphy should not be used interchangeably to monitor gastroesophageal reflux.

  11. Seneca Resources Corporation 16-118-NG- Long Term Export

    Energy.gov [DOE]

    The Office of Fossil Energy gives notice of receipt of an Application filed August 25, 2016 by Seneca Resources Corporation, requesting long-term authorization to export natural gas to Canada in a...

  12. completed-ng-projects | netl.doe.gov

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... Alaska North Slope Oil and Gas Transportation ... Coalbed Methane Extraction by Microwave-Induced ... Productivity in Tight Gas Sands Stanford University ...

  13. DOE/AMO NG Infrastructure R & D & Methane emissions Mitigation...

    Energy Savers

    Installation, Maintenance & Repair * Pipeline IntegrityDirect & Remote Assessment * ... in performing routine and emergency gas pipeline inspections and surveys (at "tree-top" ...

  14. Alturas LLC- FE Dkt. No. 14-55-NG (FTA)

    Energy.gov [DOE]

    The Office of Fossil Energy gives notice of receipt of an application filed on April 18, 2014, by Alturas LLC requesting long-term authority to export up to a total of 1.5 million metric tons ...

  15. RESULTS OF ANALYTICAL SAMPLE CROSSCHECKS FOR NEXT GENERATION SOLVENT EXTRACTION SAMPLES ISOPAR L CONCENTRATION AND PH

    SciTech Connect (OSTI)

    Peters, T.; Fink, S.

    2011-09-29

    As part of the implementation process for the Next Generation Cesium Extraction Solvent (NGCS), SRNL and F/H Lab performed a series of analytical cross-checks to ensure that the components in the NGCS solvent system do not constitute an undue analytical challenge. For measurement of entrained Isopar{reg_sign} L in aqueous solutions, both labs performed similarly with results more reliable at higher concentrations (near 50 mg/L). Low bias occurred in both labs, as seen previously for comparable blind studies for the baseline solvent system. SRNL recommends consideration to use of Teflon{trademark} caps on all sample containers used for this purpose. For pH measurements, the labs showed reasonable agreement but considerable positive bias for dilute boric acid solutions. SRNL recommends consideration of using an alternate analytical method for qualification of boric acid concentrations.

  16. Adaptation to low pH and lignocellulosic inhibitors resulting in ethanolic fermentation and growth of Saccharomyces cerevisiae

    DOE PAGES-Beta [OSTI]

    Narayanan, Venkatachalam; Sànchez i Nogué, Violeta; van Niel, Ed W. J.; Gorwa-Grauslund, Marie F.

    2016-08-26

    Here, lignocellulosic bioethanol from renewable feedstocks using Saccharomyces cerevisiae is a promising alternative to fossil fuels owing to environmental challenges. S. cerevisiae is frequently challenged by bacterial contamination and a combination of lignocellulosic inhibitors formed during the pre-treatment, in terms of growth, ethanol yield and productivity. We investigated the phenotypic robustness of a brewing yeast strain TMB3500 and its ability to adapt to low pH thereby preventing bacterial contamination along with lignocellulosic inhibitors by short-term adaptation and adaptive lab evolution (ALE). The short-term adaptation strategy was used to investigate the inherent ability of strain TMB3500 to activate a robust phenotypemore » involving pre-culturing yeast cells in defined medium with lignocellulosic inhibitors at pH 5.0 until late exponential phase prior to inoculating them in defined media with the same inhibitor cocktail at pH 3.7. Adapted cells were able to grow aerobically, ferment anaerobically (glucose exhaustion by 19 +/- 5 h to yield 0.45 +/- 0.01 g ethanol g glucose-1) and portray significant detoxification of inhibitors at pH 3.7, when compared to non-adapted cells. ALE was performed to investigate whether a stable strain could be developed to grow and ferment at low pH with lignocellulosic inhibitors in a continuous suspension culture. Though a robust population was obtained after 3600 h with an ability to grow and ferment at pH 3.7 with inhibitors, inhibitor robustness was not stable as indicated by the characterisation of the evolved culture possibly due to phenotypic plasticity. With further research, this short-term adaptation and low pH strategy could be successfully applied in lignocellulosic ethanol plants to prevent bacterial contamination.« less

  17. Controlling the pH of acid cheese whey in a two-stage anaerobic digester with sodium hydroxide

    SciTech Connect (OSTI)

    Ghaly, A.E.; Ramkumar, D.R.

    1999-07-01

    Anaerobic digestion of cheese whey offers a two-fold benefit: pollution potential reduction and biogas production. The biogas, as an energy source, could be used to reduce the consumption of traditional fuels in the cheese plant. However, as a result of little or no buffering capacity of whey, the pH of the anaerobic digester drops drastically and the process is inhibited. In this study, the effect of controlling the pH of the second chamber of a two-stage, 150 L anaerobic digester operating on cheese whey on the quality and quantity of biogas and the pollution potential reduction, was investigated using sodium hydroxide. The digester was operated at a temperature of 35 C and a hydraulic retention time of 15 days for three runs (no pH control, pH control with no reseeding, and ph control with reseeding) each lasting 50 days. The results indicated that operating the digester without pH control resulted in a low pH (3.3) which inhibited the methanogenic bacteria. The inhibition was irreversible and the digester did not recover (no methane production) when the pH was restored to 7.0 without reseeding, as the observed increased gas production was a false indication of recovery because the gas was mainly carbon dioxide. The addition of base resulted in a total alkalinity of 12,000 mg/L as CaCO{sub 3}. When the system was reseeded and the pH controlled, the total volatile acid concentration was 15,100 mg/L (as acetic acid), with acetic (28%), propionic (21%), butyric (25%), valeric (8%), and caproic (15%) acids as the major constituents. The biogas production was 62.6 L/d (0.84 m{sup 3}/m{sup 3}/d) and the methane content was 60.7%. Reductions of 27.3, 30.4 and 23.3% in the total solids, chemical oxygen demand and total kjeldahl nitrogen were obtained, respectively. The ammonium nitrogen content increased significantly (140%).

  18. Effect of pH on Structural Changes in Perch Hemoglobin that Can Alter Redox Stability and Heme Affinity

    SciTech Connect (OSTI)

    Richards, Mark P.; Aranda, IV, Roman; He, Cai; Phillips, Jr., George N.

    2010-01-07

    pH can be manipulated to alter the oxidative stability of fish-based foods during storage. X-ray diffraction was used to investigate the ability of reduced pH to cause structural changes in fish hemoglobins that lead to enhanced oxidative degradation. Decreasing pH from 8.0 to 6.3 and 5.7 created a large channel for solvent entry into the heme crevice of perch hemoglobin beta chains. The proton-induced opening of this channel occurred between site CD3 and the heme-6-propionate. Solvent entry into the heme crevice can enhance metHb formation and hemin loss, processes that accelerate lipid oxidation. Reduced pH also decreased the distance between Ile at E11 in one of the alpha chains and the ligand above the heme iron atom. This sterically displaces O{sub 2} and protonated O{sub 2} which increases metHb formation. These studies demonstrate that pH reduction causes structural changes in perch hemoglobin which increase oxidative degradation of the heme pigment.

  19. Heterodifunctional ligands derived from monooxidized Bis(phosphino)amines. Synthesis and transition metal (Molybdenum(0), Tungsten(0), Rhodium(I), Palladium(II), and Platinum(II)) complexes of (Diphenylphosphino)(diphenylphosphinothioyl)- and (Diphenylphosphino) (diphenylphosphinoselenoyl)phenylamine, Ph[sub 2]PN(Ph)P(E)PH[sub 2] (E = S, Se). Crystal and molecular structure of the Pt(II) Complex [Cl[sub 2]P[ovr tPPh[sub 2]N(Ph)P(S)]Ph[sub 2

    SciTech Connect (OSTI)

    Balakrishna, M.S.; Klein, R.; Uhlenbrock, S.; Pinkerton, A.A.; Cavell, R.G. )

    1993-12-08

    Bis(diphenylphosphino)phenylamine can be selectivity oxidized by S or Se in toluene or hexane solvents to the monooxidized thioyl or selenoyl products Ph[sub 2]PN(PH)PPh[sub 2]=E, (E = S, Se). These compounds act as bidentate chelate ligands toward metal complexes forming (CO)[sub 4]M(LL) (M = Mo, W), CO(Cl)Rh(LL), and Cl[sub 2]M(LL), (M = Pt, Pd) where (LL) is the thioyl or selenoyl derivative of the aminobis(phosphine). IR and NMR data are given for all complexes. The carbonyl infrared stretching frequencies show that the chelates form with the phosphine cis to any CO which is present. The [sup 31]P NMR of all complexes of two doublets except for the Rh complexes wherein the Rh spin also couples to phosphorous to produce two doublets of doublets. The [sup 2]J[sub PP] values range from 56 to 112 Hz. [sup 1]J[sub PSe] coupling provide valuable assistance for the assignment of the phosphorus resonances which range widely from 55 to 126 ppm for P[sup III] and from 60 to 80 ppm for the P[sup v] case. Assignment of P[sup III] and P[sup V] signals, which invert relative shift positions on occasion, is aided by the analysis of appropriate spin satellites arising from the substituents. It is concluded that coordination shifts for P[sup III] are always positive, ranging from 22 ppm for Pt[sup II] complexes to 70 ppm for Rh[sup I] complexes. Coordination shifts for P[sup V] centers are much smaller, e.g. 0.12 ppm, and in some cases the coordination shifts for the P[sup V] centers are negative versus the free ligand.

  20. A microbial fuel cell operating at low pH using an acidophile, Acidiphilium cryptum.

    SciTech Connect (OSTI)

    Borole, Abhijeet P; Cesar, Scott A; O'Neill, Hugh Michael; Tsouris, Costas

    2008-01-01

    A microbial fuel cell using an acidophilic microorganism, Acidiphilium cryptum, as the anode biocatalyst was investigated. The mode of electron transfer by this organism to the electrode was studied. Electricity production in the presence of a mediator was demonstrated using its natural electron acceptor, iron, as well as phenosafranin as the electron mediating agent. Production of Fe(II), as a result of iron reduction, at a pH of 4.0 or below was found to support electricity production. Accumulation of the oxidized iron, Fe(III) as a result of electron donation to the electrode, however, restricted higher current output. Addition of nitrilotriacetic acid helped resolve the problem by redissolution of deposited Fe(III). Further, use of phenosafranin as a secondary mediator resulted in improvement in power output. At a cell loading equivalent to OD600 of 1.0, a power output of 12.7 mW/m2 was obtained in a two-chamber air-sparged fuel cell. Potential for direct electron transfer was also investigated but not detected under the conditions studied.

  1. Separation of switchgrass bio-oil by water/organic solvent addition and pH adjustment

    DOE PAGES-Beta [OSTI]

    Park, Lydia Kyoung-Eun; Ren, Shoujie; Yiacoumi, Sotira; Ye, X. Philip; Borole, Abhijeet P.; Tsouris, Costas

    2016-01-29

    Applications of bio-oil are limited by its challenging properties including high moisture content, low pH, high viscosity, high oxygen content, and low heating value. Separation of switchgrass bio-oil components by adding water, organic solvents (hexadecane and octane), and sodium hydroxide may help to overcome these issues. Acetic acid and phenolic compounds were extracted in aqueous and organic phases, respectively. Polar chemicals, such as acetic acid, did not partition in the organic solvent phase. Acetic acid in the aqueous phase after extraction is beneficial for a microbial-electrolysis-cell application to produce hydrogen as an energy source for further hydrodeoxygenation of bio-oil. Organicmore » solvents extracted more chemicals from bio-oil in combined than in sequential extraction; however, organic solvents partitioned into the aqueous phase in combined extraction. When sodium hydroxide was added to adjust the pH of aqueous bio-oil, organic-phase precipitation occurred. As the pH was increased, a biphasic aqueous/organic dispersion was formed, and phase separation was optimized at approximately pH 6. The neutralized organic bio-oil had approximately 37% less oxygen and 100% increased heating value than the initial centrifuged bio-oil. In conclusion, the less oxygen content and increased heating value indicated a significant improvement of the bio-oil quality through neutralization.« less

  2. The effects of low pH and elevated aluminum on yellowstone cutthroat trout (Oncorhynchus clarki bouvieri)

    SciTech Connect (OSTI)

    Farag, A.M. ); Woodward, D.F. ); Little, E.E.; Steadman, B. ); Vertucci, F.A. )

    1993-04-01

    Although acid deposition is not considered a problem in the western US, surface waters in high elevations and fish inhabiting these waters may be vulnerable to acidification. This study examined the sensitivity of a wester salmonid to acid and aluminum stress. Yellowstone cutthroat trout (Oncorhynchus clarki bouvieri; YSC) were exposed for 7 d during each of four early life stages, or continuously from fertilization to 40 d post-hatch, to decreased pH and elevated Al. The authors monitored survival, growth, whole-body ion content, and behavior of the exposed fish. Sensitivity of early life stages of YSC may be expressed by survival or by survival and sublethal effects. In their study, eggs were the most sensitive life stage of YSC to low pH if survival alone was considered. However, the sublethal effects on growth, tissue ion content, and behavior revealed the alevins and swim-up larvae were more sensitive to reduced pH and increased Al than eggs or eyed embryos. They also observed that survival was significantly decreased if YSC were exposed to pH 6.0 and 50 [mu]g Al per liter continuously from fertilization to 40 d post-hatch.

  3. Draft Genome Sequence for Microbacterium laevaniformans Strain OR221, a Bacterium Tolerant to Metals, Nitrate, and Low pH

    SciTech Connect (OSTI)

    Brown, Steven D; Palumbo, Anthony Vito; Panikov, Nikolai; Ariyawansa, Thilini; Klingeman, Dawn Marie; Johnson, Courtney M; Land, Miriam L; Utturkar, Sagar M; Epstein, Slava

    2012-01-01

    Microbacterium laevaniformans strain OR221 was isolated from subsurface sediments obtained from the Field Research Center (FRC) in Oak Ridge, TN. It was characterized as a bacterium tolerant to heavy metals such as uranium, nickel, cobalt, cadmium, as well as nitrate and low pH. We present its draft genome sequence.

  4. THE SENSITIVITY OF CARBON STEELS' SUSCEPTIBILITY TO LOCALIZED CORROSION TO THE PH OF NITRATE BASED NUCLEAR WASTES

    SciTech Connect (OSTI)

    BOOMER KD

    2010-01-14

    The Hanford tank reservation contains approximately 50 million gallons of liquid legacy radioactive waste from cold war weapons production, which is stored in 177 underground storage tanks. The tanks will be in use until waste processing operations are completed. The wastes tend to be high pH (over 10) and nitrate based. Under these alkaline conditions carbon steels tend to be passive and undergo relatively slow uniform corrosion. However, the presence of nitrate and other aggressive species, can lead to pitting and stress corrosion cracking. This work is a continuation of previous work that investigated the propensity of steels to suffer pitting and stress corrosion cracking in various waste simulants. The focus of this work is an investigation of the sensitivity of the steels' pitting and stress corrosion cracking susceptibility tosimulant pH. Previous work demonstrated that wastes that are high in aggressive nitrate and low in inhibitory nitrite are susceptible to localized corrosion. However, the previous work involved wastes with pH 12 or higher. The current work involves wastes with lower pH of 10 or 11. It is expected that at these lower pHs that a higher nitrite-to-nitrate ratio will be necessary to ensure tank integrity. This experimental work involved both electrochemical testing, and slow strain rate testing at either the free corrosion potential or under anodic polarization. The results of the current work will be discussed, and compared to work previously presented.

  5. Molecular basis of the structural stability of a Top7-based scaffold at extreme pH and temperature conditions

    SciTech Connect (OSTI)

    Soares, Thereza A.; Boschek, Curt B.; Apiyo, David O.; Baird, Cheryl L.; Straatsma, TP

    2010-07-01

    The development of stable scaffolds that can tolerate environmental extremes has an immense potential for applications in industry and defense. Recently, we have engineered an eight-residue loop into the de novo designed Top7 protein, which specifically binds the glycoprotein CD4. The robust properties of the Top7, coupled with the ease in production, make it a robust scaffold to design novel functionalities for use under extreme environmental conditions. In the present work, a series of explicit-solvent molecular dynamics simulations are reported which investigates the effect of mutations and extreme conditions of temperature and pH on the structure, stability, and dynamics of the native and engineered Top7. These simulations indicate that i. The structural dynamics of the engineered and native Top7 in solution are equivalent under corresponding conditions of pH and temperature. Ensemble-averaged structures of the native and engineered Top7 maintain the overall tertiary structure pattern, albeit with loss of helical content when at low pH and high-temperature conditions. Mutations of residues E43A, D46A, E67A, E69A, EA81A along the ?-helices of the engineered Top7 did not lead to significant changes in the native fold under pH 2 and 400 K, suggesting that the helices can accommodate varying sequences. iii. The anti-parallel ?-sheet is the structural core responsible for the stability of the native and engineered Top7 and is well maintained under extreme pH and temperature conditions. These findings indicate that the insertion of an eight-residue loop into the structure of Top7 does not adversely affect the global fold or the structural stability of the Top7 scaffold.

  6. REE Sorption Study on sieved -50 +100 mesh fraction of Media #1 in Brine #1 with Different Starting pH's at 70C

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Gary Garland

    2015-09-29

    This is a continuation of the REE sorption study for shaker bath tests on 2g media #1 in 150mL brine #1 with different starting pH's at 70C. In a previous submission we reported data for shaker bath tests for brine #1 with starting pH's of 3.5, 4.5 and 5.5. In this submission we these pH's compared to starting brine #1 pH's of 6, and 7.

  7. Correlating hydrogen oxidation and evolution activity on platinum at different pH with measured hydrogen binding energy

    SciTech Connect (OSTI)

    Sheng, WC; Zhuang, ZB; Gao, MR; Zheng, J; Chen, JGG; Yan, YS

    2015-01-08

    The hydrogen oxidation/evolution reactions are two of the most fundamental reactions in distributed renewable electrochemical energy conversion and storage systems. The identification of the reaction descriptor is therefore of critical importance for the rational catalyst design and development. Here we report the correlation between hydrogen oxidation/evolution activity and experimentally measured hydrogen binding energy for polycrystalline platinum examined in several buffer solutions in a wide range of electrolyte pH from 0 to 13. The hydrogen oxidation/evolution activity obtained using the rotating disk electrode method is found to decrease with the pH, while the hydrogen binding energy, obtained from cyclic voltammograms, linearly increases with the pH. Correlating the hydrogen oxidation/evolution activity to the hydrogen binding energy renders a monotonic decreasing hydrogen oxidation/evolution activity with the hydrogen binding energy, strongly supporting the hypothesis that hydrogen binding energy is the sole reaction descriptor for the hydrogen oxidation/evolution activity on monometallic platinum.

  8. Electroreduction of carbon monoxide over a copper nanocube catalyst: Surface structure and pH dependence on selectivity

    DOE PAGES-Beta [OSTI]

    Roberts, F. Sloan; Kuhl, Kendra P.; Nilsson, Anders

    2016-02-16

    The activity and selectivity for CO2/CO reduction over copper electrodes is strongly dependent on the local surface structure of the catalyst and the pH of the electrolyte. Here we investigate a unique, copper nanocube surface (CuCube) as a CO reduction electrode under neutral and basic pH, using online electrochemical mass spectroscopy (OLEMS) to determine the onset potentials and relative intensities of methane and ethylene production. To relate the unique selectivity to the surface structure, the CuCube surface reactivity is compared to polycrystalline copper and three single crystals under the same reaction conditions. Here, we find that the high selectivity formore » ethylene over the CuCube surface is most comparable to the Cu(100) surface, which has the cubic unit cell. However, the suppression of methane production over CuCube is unique to that particular surface. Basic pH is also shown to enhance ethylene selectivity on all surfaces, again with the CuCube surface being unique.« less

  9. Evaluation of experimentally measured and model-calculated pH for rock-brine-CO2 systems under geologic CO2 sequestration conditions

    SciTech Connect (OSTI)

    Shao, Hongbo; Thompson, Christopher J.; Cantrell, Kirk J.

    2013-11-14

    pH is an essential parameter for understanding the geochemical reactions that occur in rock-brine-CO2 systems when CO2 is injected into deep geologic formations for long-term storage. Due to a lack of reliable experimental methods, most laboratory studies conducted under geological CO2 sequestration (GCS) conditions have relied on thermodynamic modeling to estimate pH. The accuracy of these model predictions is typically uncertain. In our previous work, we have developed a method for pH determination by in-situ spectrophotometry. In the present work, we expanded the applicable pH range for this method and measured the pH of several rock-brine-CO2 systems at GCS conditions for five rock samples collected from ongoing GCS demonstration projects. Experimental measurements were compared with pH values calculated using several geochemical modeling approaches. The effect of different thermodynamic databases on the accuracy of model prediction was evaluated. Results indicate that the accuracy of model calculations is rock-dependent. For rocks comprised of carbonate and sandstone, model results generally agreed well with experimentally measured pH; however, for basalt, significant differences were observed. These discrepancies may be due to the models’ failure to fully account for certain reaction occurring between the basalt minerals the CO2-saturated brine solutions.

  10. Effects of pH and anion on hydrogen sorption/desorption at/within oxide-derived Pd electrodes

    SciTech Connect (OSTI)

    Hu, C.C.; Wen, T.C.

    1995-05-01

    A lot of interest in the electrochemical behavior of H and D sorption within/at palladium has been prompted by Fleischmann and Pons` reports which had claimed to observe that nuclear fusion was induced by electrochemical compression of deuterium within a palladium lattice, although there are some disputes of this work in the open literature. Oxide-derived Pd electrodes were obtained by cathodic polarization of Pd oxide-coated titanium electrodes (fabricated by thermal decomposition) at 0 V (RHE) for 30 min in 1.5 mol/dm{sup 3} NaOH. Hydrogen adsorption/absorption (denoted hereafter as sorption) and desorption within/at these electrodes were obtained using cyclic voltammetry (CV), chronopotentiometry, and linear sweep voltammetry (LSV). CV results revealed that {beta}-PdH formation/oxidation is more reversible in either concentrated acid or base solutions than in intermediate pH media and the rate of {beta}-PDH desorption is faster in a pH solution <10. The oxidation of {beta}-PDH is electron transfer controlled in intermediate pH media, especially in weakly basic solutions due to the adsorption of H{sub 2}PO{sub 4}{sup {minus}}/HPO{sub 4}{sup 2{minus}}. The sequence of anions with respect to increasing ability to inhibit hydrogen sorption is: CH{sub 3}COO{sup {minus}} < Cl{sup {minus}} < HSO{sub 4}{sup {minus}} {approx_equal} ClO{sub 4} < HC{sub 2}O{sub 4} < H{sub 2}PO{sub 4}.

  11. Leaching characteristics of toxic constituents from coal fly ash mixed soils under the influence of pH

    SciTech Connect (OSTI)

    Komonweeraket, Kanokwan; Cetin, Bora; Benson, Craig H.; Aydilek, Ahmet H.; Edil, Tuncer B.

    2015-04-15

    Highlights: • The impact of pH on the leaching of elements and metals from fly ash mixed soils. • Generally Ca, Cd, Mg, and Sr follows a cationic leaching pattern. • The leaching of As and Se shows an oxyanionic leaching pattern. • The leaching behavior of elements does not change based on material type. • Different fly ash types show different abilities in immobilizing trace elements. - Abstract: Leaching behaviors of Arsenic (As), Barium (Ba), Calcium (Ca), Cadmium (Cd), Magnesium (Mg), Selenium (Se), and Strontium (Sr) from soil alone, coal fly ash alone, and soil-coal fly ash mixtures, were studied at a pH range of 2–14 via pH-dependent leaching tests. Seven different types of soils and coal fly ashes were tested. Results of this study indicated that Ca, Cd, Mg, and Sr showed cationic leaching pattern while As and Se generally follows an oxyanionic leaching pattern. On the other hand, leaching of Ba presented amphoteric-like leaching pattern but less pH-dependent. In spite of different types and composition of soil and coal fly ash investigated, the study reveals the similarity in leaching behavior as a function of pH for a given element from soil, coal fly ash, and soil-coal fly ash mixtures. The similarity is most likely due to similar controlling mechanisms (e.g., solubility, sorption, and solid-solution formation) and similar controlling factors (e.g., leachate pH and redox conditions). This offers the opportunity to transfer knowledge of coal fly ash that has been extensively characterized and studied to soil stabilized with coal fly ash. It is speculated that unburned carbon in off-specification coal fly ashes may provide sorption sites for Cd resulting in a reduction in concentration of these elements in leachate from soil-coal fly ash mixture. Class C fly ash provides sufficient CaO to initiate the pozzolanic reaction yielding hydrated cement products that oxyanions, including As and Se, can be incorporated into.

  12. Microfluidic device having an immobilized pH gradient and PAGE gels for protein separation and analysis

    DOE Patents [OSTI]

    Sommer, Gregory J.; Hatch, Anson V.; Singh, Anup K.; Wang, Ying-Chih

    2012-12-11

    Disclosed is a novel microfluidic device enabling on-chip implementation of a two-dimensional separation methodology. Previously disclosed microscale immobilized pH gradients (IPG) are combined with perpendicular polyacrylamide gel electrophoresis (PAGE) microchannels to achieve orthogonal separations of biological samples. Device modifications enable inclusion of sodium dodecyl sulfate (SDS) in the second dimension. The device can be fabricated to use either continuous IPG gels, or the microscale isoelectric fractionation membranes we have also previously disclosed, for the first dimension. The invention represents the first all-gel two-dimensional separation microdevice, with significantly higher resolution power over existing devices.

  13. Microfluidic device having an immobilized pH gradient and page gels for protein separation and analysis

    DOE Patents [OSTI]

    Sommer, Gregory J; Hatch, Anson V; Singh, Anup K; Wang, Ying-Chih

    2014-05-20

    Disclosed is a novel microfluidic device enabling on-chip implementation of a two-dimensional separation methodology. Previously disclosed microscale immobilized pH gradients (IPG) are combined with perpendicular polyacrylamide gel electrophoresis (PAGE) microchannels to achieve orthogonal separations of biological samples. Device modifications enable inclusion of sodium dodecyl sulfate (SDS) in the second dimension. The device can be fabricated to use either continuous IPG gels, or the microscale isoelectric fractionation membranes we have also previously disclosed, for the first dimension. The invention represents the first all-gel two-dimensional separation microdevice, with significantly higher resolution power over existing devices.

  14. U

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    race b ased m ethods t o c reate s urrogate applica*ons. 8 Current s tatus * In 2 014, c ame a cross a n i nteres*ng p aper b y Babak B ehzad ( then a s tudent o f M arc Snir)...

  15. Planet hunters. VII. Discovery of a new low-mass, low-density planet (PH3 C) orbiting Kepler-289 with mass measurements of two additional planets (PH3 B and D)

    SciTech Connect (OSTI)

    Schmitt, Joseph R.; Fischer, Debra A.; Wang, Ji; Margossian, Charles; Brewer, John M.; Giguere, Matthew J.; Agol, Eric; Deck, Katherine M.; Rogers, Leslie A.; Gazak, J. Zachary; Holman, Matthew J.; Jek, Kian J.; Omohundro, Mark R.; Winarski, Troy; Lintott, Chris; Simpson, Robert; Lynn, Stuart; Parrish, Michael; Schawinski, Kevin; Schwamb, Megan E.; and others

    2014-11-10

    We report the discovery of one newly confirmed planet (P = 66.06 days, R {sub P} = 2.68 ± 0.17 R {sub ⊕}) and mass determinations of two previously validated Kepler planets, Kepler-289 b (P = 34.55 days, R {sub P} = 2.15 ± 0.10 R {sub ⊕}) and Kepler-289-c (P = 125.85 days, R {sub P} = 11.59 ± 0.10 R {sub ⊕}), through their transit timing variations (TTVs). We also exclude the possibility that these three planets reside in a 1:2:4 Laplace resonance. The outer planet has very deep (∼1.3%), high signal-to-noise transits, which puts extremely tight constraints on its host star's stellar properties via Kepler's Third Law. The star PH3 is a young (∼1 Gyr as determined by isochrones and gyrochronology), Sun-like star with M {sub *} = 1.08 ± 0.02 M {sub ☉}, R {sub *} = 1.00 ± 0.02 R {sub ☉}, and T {sub eff} = 5990 ± 38 K. The middle planet's large TTV amplitude (∼5 hr) resulted either in non-detections or inaccurate detections in previous searches. A strong chopping signal, a shorter period sinusoid in the TTVs, allows us to break the mass-eccentricity degeneracy and uniquely determine the masses of the inner, middle, and outer planets to be M = 7.3 ± 6.8 M {sub ⊕}, 4.0 ± 0.9M {sub ⊕}, and M = 132 ± 17 M {sub ⊕}, which we designate PH3 b, c, and d, respectively. Furthermore, the middle planet, PH3 c, has a relatively low density, ρ = 1.2 ± 0.3 g cm{sup –3} for a planet of its mass, requiring a substantial H/He atmosphere of 2.1{sub −0.3}{sup +0.8}% by mass, and joins a growing population of low-mass, low-density planets.

  16. Activated RhoA Binds to the Pleckstrin Homology (PH) Domain of PDZ-RhoGEF, a Potential Site for Autoregulation

    SciTech Connect (OSTI)

    Chen, Zhe; Medina, Frank; Liu, Mu-ya; Thomas, Celestine; Sprang, Stephen R.; Sternweis, Paul C.

    2010-07-19

    Guanine nucleotide exchange factors (GEFs) catalyze exchange of GDP for GTP by stabilizing the nucleotide-free state of the small GTPases through their Dbl homology/pleckstrin homology (DH {center_dot} PH) domains. Unconventionally, PDZ-RhoGEF (PRG), a member of the RGS-RhoGEFs, binds tightly to both nucleotide-free and activated RhoA (RhoA {center_dot} GTP). We have characterized the interaction between PRG and activated RhoA and determined the structure of the PRG-DH {center_dot} PH-RhoA {center_dot} GTP{gamma}S (guanosine 5{prime}-O-[{gamma}-thio]triphosphate) complex. The interface bears striking similarity to a GTPase-effector interface and involves the switch regions in RhoA and a hydrophobic patch in PRG-PH that is conserved among all Lbc RhoGEFs. The two surfaces that bind activated and nucleotide-free RhoA on PRG-DH {center_dot} PH do not overlap, and a ternary complex of PRG-DH {center_dot} PH bound to both forms of RhoA can be isolated by size-exclusion chromatography. This novel interaction between activated RhoA and PH could play a key role in regulation of RhoGEF activity in vivo.

  17. Large area graphene ion sensitive field effect transistors with tantalum pentoxide sensing layers for pH measurement at the Nernstian limit

    SciTech Connect (OSTI)

    Fakih, Ibrahim, E-mail: ibrahim.fakih@mail.mcgill.ca; Sabri, Shadi; Szkopek, Thomas, E-mail: thomas.szkopek@mcgill.ca [Department of Electrical and Computer Engineering, McGill University, Montreal, Quebec H3A 2A7 (Canada); Mahvash, Farzaneh [Department of Electrical and Computer Engineering, McGill University, Montreal, Quebec H3A 2A7 (Canada); Dpartement de Chimie et Biochimie, Universite du Qubec Montral, Montreal, Quebec H3C 3P8 (Canada); Nannini, Matthieu [McGill Nanotools Microfab, McGill University, Montreal, Quebec H3A 2A7 (Canada); Siaj, Mohamed [Dpartement de Chimie et Biochimie, Universite du Qubec Montral, Montreal, Quebec H3C 3P8 (Canada)

    2014-08-25

    We have fabricated and characterized large area graphene ion sensitive field effect transistors (ISFETs) with tantalum pentoxide sensing layers and demonstrated pH sensitivities approaching the Nernstian limit. Low temperature atomic layer deposition was used to deposit tantalum pentoxide atop large area graphene ISFETs. The charge neutrality point of graphene, inferred from quantum capacitance or channel conductance, was used to monitor surface potential in the presence of an electrolyte with varying pH. Bare graphene ISFETs exhibit negligible response, while graphene ISFETs with tantalum pentoxide sensing layers show increased sensitivity reaching up to 55?mV/pH over pH 3 through pH 8. Applying the Bergveld model, which accounts for site binding and a Guoy-Chapman-Stern picture of the surface-electrolyte interface, the increased pH sensitivity can be attributed to an increased buffer capacity reaching up to 10{sup 14} sites/cm{sup 2}. ISFET response was found to be stable to better than 0.05 pH units over the course of two weeks.

  18. The spinodal decomposition in 17-4PH stainless steel subjected to long-term aging at 350 deg. C

    SciTech Connect (OSTI)

    Wang Jun Zou Hong; Li Cong; Qiu Shaoyu; Shen Baoluo

    2008-05-15

    The influence of aging time on the microstructure evolution of 17-4 PH martensitic stainless steel was studied by transmission electron microscopy (TEM). Results showed that the martensite decomposed by a spinodal decomposition mechanism after the alloy was subjected to long-term aging at 350 deg. C. The fine scale spinodal decomposition of {alpha}-ferrite brought about a Cr-enriched bright stripe and a Fe-enriched dark stripe, i.e., {alpha}' and {alpha} phases, separately, which were perpendicular to the grain boundary. The spinodal decomposition started at the grain boundary. Then with prolonged aging time, the decomposition microstructure expanded from the grain boundary to interior. The wavelength of the spinodally decomposed microstructure changed little with extended aging time.

  19. Foreign nationals who receive science or engineering Ph.D.`s from US universities: Stay rates and characteristics of stayers

    SciTech Connect (OSTI)

    Finn, M.G.; Pennington, L.A.; Anderson, K.H.

    1995-04-01

    This report studies the behavior of foreign nationals who received Ph.D. degrees in science or engineering from US universities during the period 1984--1990. It addresses two distinct questions: What proportion of foreign students stay to work in the United States after graduation; and do foreign students who leave the United States differ from those who stay? Descriptive statistics are provided to answer the first question. These estimates of stay rates have small margins of error because they were produced from the tax payment records of the Social Security Administration. The estimates of stay rates in also provide a partial answer to the second question as well as we are able to provide stay rates for different degree fields and different countries of citizenship, thereby identifying country-specific and field-specific differences in stay rates.

  20. ESTIMATED NEPTUNIUM SEDIMENT SORPTION VALUES AS A FUNCTION OF PH AND MEASURED BARIUM AND RADIUM KD VALUES

    SciTech Connect (OSTI)

    Kaplan, D.

    2011-01-13

    The objective of this document is to provide traceability and justification for a select few new geochemical data used in the Special Analysis entitled 'Special Analysis for the Dose Assessment of the Final Inventories in Center Slit Trenches One through Five'. Most values used in the Special Analysis came from the traditional geochemical data package, however, some recent laboratory measurements have made it possible to estimate barium K{sub d} values. Additionally, some recent calculations were made to estimate neptunium K{sub d} values as a function of pH. The assumptions, justifications, and calculations needed to generate these new values are presented in this document, and the values are summarized.

  1. Radium-226 and low pH in groundwater due to oxidation of authigenic pyrite; Savannah River Site, South Carolina

    SciTech Connect (OSTI)

    KUBILIUS, WALTER

    2005-12-21

    The origin of elevated radium-226 in groundwater beneath a sanitary landfill at the Savannah River Site (SRS) was investigated. Nearly one hundred monitoring wells are developed in the Steed Pond Aquifer (SPA), which consists of 100-150 ft of Coastal Plain sand, iron oxides, and minor clay. Wells screened in the upper and middle portions of the aquifer have average Ra-226 between 0.5 and 2.5 pCi/L, and average pHs above 4.7. However, wells screened near the base of the aquifer exhibit higher average Ra-226 concentrations of 2.5 to 4.6 pCi/L, with some measurements exceeding the MCL of 5 pCi/L, and show average pHs of 4.1 to 4.7. These wells are not downgradient of the landfill, and are not impacted by landfill leachate. The Crouch Branch Confining Unit (CBCU) underlies the aquifer, and is composed partly of reduced gray/brown clay with lignite and authigenic pyrite. Gamma ray logs show that the SPA has low gamma counts, but the CBCU is consistently elevated. Groundwater with high radium/low pH also contains elevated sulfate concentrations. pH calculations indicate that sulfate is in the form of sulfuric acid. A model for the origin of elevated Ra-226 levels in deeper SPA wells envisions infiltration of oxygenated SPA groundwater into reduced pyritic CBCU sediments, with consequent oxidative pyrite dissolution, and acidification of groundwater. Then, naturally occurring CBCU radium dissolves, and mixes into the Steed Pond Aquifer.

  2. An experimental and numerical analysis of hydrogen assisted cracking and weldability test methodology. Ph.D. Thesis

    SciTech Connect (OSTI)

    Dighde, R.M.

    1993-12-31

    The preferred method for increasing resistance to hydrogen-assisted cracking (HAC) is the application of an adequate preheating temperature, T(sub ph). The suitability of given welding conditions, including T(sub ph), in avoiding HAC is generally assessed through the use of Tekken and Lehigh weldability restraint tests. The safe welding conditions determined from these tests are then applied in industrial fabrication. It is observed that these safe welding conditions do not always avoid HAC in actual weldments. Therefore, it is necessary to evaluate the weldability testing procedure in its entirety against the more general industrial fabrication practice and understand the inherent differences. The differences arising, at different stages of weldability testing procedure, from weld hydrogen measurement technique, weldability testing procedure, hydrogen diffusion behavior, residual stress development, and dimensional differences in weldability tests and actual weldments were analyzed in detail using an experimental and numerical approach. The weld hydrogen measurement results indicated that the existing hydrogen measurement standards do not measure the weld hydrogen levels in actual weldments, and should, therefore, be modified for use in weldability testing procedure. The Tekken and Lehigh weldability test results suggested that weld induced variation at stress concentration locations strongly influences the HAC tendency and crack propagation behavior. Finite element analysis (FEA) of hydrogen diffusion behavior in weldability tests and actual weld grooves indicated that hydrogen diffusion is a strong function of the groove shape and the weld thermal cycle, and hence, direct applicability of weldability test results to actual weldments can be misleading. Elasto-plastic thermo-mechanical behavior of Tekken and Lehigh weldability tests during welding was carried out using FEA.

  3. Solubility Measurements of Crystalline NiO in Aqueous Solution as a Function of Temperature and pH

    SciTech Connect (OSTI)

    Palmer, Donald; Benezeth, Pascale; Xiao, Caibin {nmn}; Wesolowski, David J; Anovitz, Lawrence {Larry} M

    2011-01-01

    Abstract Results of solubility experiments involving crystalline nickel oxide (bunsenite) in aqueous solutions are reported as functions of temperature (0 to 350 C) and pH at pressures slightly exceeding (with one exception) saturation vapor pressure. These experiments were carried out in either flow-through reactors or a hydrogen-electrode concentration cell for mildly acidic to near neutral pH solutions. The results were treated successfully with a thermodynamic model incorporating only the unhydrolyzed aqueous nickel species (viz., Ni2+ ) and the neutrally charged hydrolyzed species (viz., Ni(OH)02 ). The thermodynamic quantities obtained at 25 C and infinite dilution are, with 2 uncertainties: log10Ko s0 = (12.40 0.29), rGo m = (70.8 1.7) kJ mol 1; rHo m = (105.6 1.3) kJ mol 1; rSo m = (116.6 3.2) J K 1 mol 1; rCo p,m = (0 13) J K 1 mol 1; and log10Ko s2 = (8.76 0.15); rGo m = (50.0 1.7) kJ mol 1; rHo m = (17.7 1.7) kJ mol 1; rSo m = (108 7) J K 1 mol 1; rCo p,m = (108 3) J K 1 mol 1. These results are internally consistent, but the latter set differs from those gleaned from previous studies recorded in the literature. The corresponding thermodynamic quantities for the formation of Ni2+ and Ni(OH)02 are also estimated. Moreover, the Ni(OH) 3 anion was never observed, even in relatively strong basic solutions (mOH = 0.1 mol kg 1), contrary to the conclusions drawn from all but one previous study.

  4. PH dependent adhesive peptides

    DOE Patents [OSTI]

    Tomich, John; Iwamoto, Takeo; Shen, Xinchun; Sun, Xiuzhi Susan

    2010-06-29

    A novel peptide adhesive motif is described that requires no receptor or cross-links to achieve maximal adhesive strength. Several peptides with different degrees of adhesive strength have been designed and synthesized using solid phase chemistries. All peptides contain a common hydrophobic core sequence flanked by positively or negatively charged amino acids sequences.

  5. Artium mater in relativistic astrophysics : New perspectives for a European-Latin American PhD program

    SciTech Connect (OSTI)

    Chardonnet, Pascal

    2015-12-17

    Following the successful scientific space missions by the European Space Agency (ESA) and the European Southern Observatory (ESO) in Chile, as well as the high-energy particle activities at CERN in Genve, we have created a Ph.D. program dedicated to the formation of scientists in the field of relativistic astrophysics. The students of such a program will lead the theoretical developments of one of the most active fields of research, based on the above observational and experimental facilities. This program needs expertise in the most advanced topics of mathematical and theoretical physics, and in relativistic field theories. It requires the ability to model the observational data received from the above facilities, as well as all the basic knowledge in astronomy, astrophysics and cosmology. This activity is necessarily international, no single university can cover the broad expertises. From this, the proposed program of the IRAP Ph.D., in one of the youngest and most dynamical French universities, pole of research and teaching in the Euro-Mediterranean region (PRES): the University of Nice. It benefits from the presence of the astrophysics research institute of Observatoire de la Cte d’Azur involved in relativistic and non-photonic astrophysics. The participation of the Freie Universitaet Berlin, Oldenburg and Bremen Universities and of the Einstein Institute in Potsdam offers the possibility of teaching in relativistic field theories at the highest level. The University of Savoy offers the link to the particle physics at CERN. The activities at the University of Rome, at Stockholm University and at ICRANet offer teaching programs in all the fields of relativistic astrophysics, including cosmology, the physics of gravitational collapse, gamma-ray bursts, and black hole physics. Finally, the University of Ferrara will be present with lectures and researches in the topics they have pioneered such as x-ray astrophysics and observational cosmology. Through ICRANet

  6. Influence of pH on the quantum-size-controlled photoelectrochemical etching of epitaxial InGaN quantum dots

    DOE PAGES-Beta [OSTI]

    Xiao, Xiaoyin; Lu, Ping; Fischer, Arthur J.; Coltrin, Michael E.; Wang, George T.; Koleske, Daniel D.; Tsao, Jeffrey Y.

    2015-11-18

    Illumination by a narrow-band laser has been shown to enable photoelectrochemical (PEC) etching of InGaN thin films into quantum dots with sizes controlled by the laser wavelength. Here, we investigate and elucidate the influence of solution pH on such quantum-size-controlled PEC etch process. We find that although a pH above 5 is often used for PEC etching of GaN-based materials, oxides (In2O3 and/or Ga2O3) form which interfere with quantum dot formation. Furthermore, at pH below 3, however, oxide-free QDs with self-terminated sizes can be successfully realized.

  7. Influence of pH on the quantum-size-controlled photoelectrochemical etching of epitaxial InGaN quantum dots

    SciTech Connect (OSTI)

    Xiao, Xiaoyin; Lu, Ping; Fischer, Arthur J.; Coltrin, Michael E.; Wang, George T.; Koleske, Daniel D.; Tsao, Jeffrey Y.

    2015-11-18

    Illumination by a narrow-band laser has been shown to enable photoelectrochemical (PEC) etching of InGaN thin films into quantum dots with sizes controlled by the laser wavelength. Here, we investigate and elucidate the influence of solution pH on such quantum-size-controlled PEC etch process. We find that although a pH above 5 is often used for PEC etching of GaN-based materials, oxides (In2O3 and/or Ga2O3) form which interfere with quantum dot formation. Furthermore, at pH below 3, however, oxide-free QDs with self-terminated sizes can be successfully realized.

  8. Leaching characteristics of selected South African fly ashes: Effect of pH on the release of major and trace species

    SciTech Connect (OSTI)

    Gitari, W.M.; Fatoba, O.O.; Petrik, L.F.; Vadapalli, V.R.K.

    2009-07-01

    Fly ash samples from two South African coal-fired power stations were subjected to different leaching tests under alkaline and acidic conditions in an attempt to assess the effect of pH on the leachability of species from the fly ashes and also assess the potential impact of the fly ashes disposal on groundwater and the receiving environment. To achieve this, German Standard leaching (DIN-S4) and Acid Neutralization Capacity (ANC) tests were employed. Ca, Mg, Na, K and SO{sub 4} were significantly leached into solution under the two leaching conditions with the total amounts in ANC leachates higher than that of DIN-S4. This indicates that a large fraction of the soluble salts in unweathered fly ash are easily leached. These species represents the fraction that can be flushed off initially from the surface of ash particles on contacting the ash with water. The amounts of toxic trace elements such as As, Se, Cd, Cr and Pb leached out of the fly ashes when in contact with de-mineralized water (DIN-S4 test) were low and below the Target Water Quality Range (TWQR) of South Africa. This is explained by their low concentrations in the fly ashes and their solubility dependence on the pH of the leaching solution. However the amounts of some minor elements such as B, Mn, Fe, As and Se leached out at lower pH ranging between 10 to 4 (ANC test) were slightly higher than the TWQR, an indication that the pH of the leaching solution plays a significant role on the leaching of species in fly ash. The high concentrations of the toxic elements released from the fly ashes at lower pH gives an indication that the disposal of the fly ash could have adverse effects on the receiving environment if the pH of the solution contacting the ashes is not properly monitored.

  9. Impedance Characteristics and Polarization Behavior of a Microbial Fuel Cell in Response to Short-Term Changes in Medium pH

    SciTech Connect (OSTI)

    Jung, Sokhee; Mench, Matthew M; Regan, John M.

    2011-01-01

    pH oppositely influences anode and cathode performance in microbial fuel cells. The differential electrochemical effects at each electrode and the resultant full-cell performance were analyzed in medium pH from 6.0 to 8.0. Potentials changed -60 mV/pH for the anode and -68 mV/pH for the cathode, coincident with thermodynamic estimations. Open circuit voltage reached a maximum (741 mV) at pH 7, and maximum power density was highest (712 mW/m{sup 2}) at pH 6.5 as the cathode performance improved at lower pH. Maximum current density increased and apparent half-saturation potential (E{sub KA}) decreased with increasing medium pH due to improved anode performance. An equivalent circuit model composed of two time constant processes accurately fit bioanode impedance data. One of these processes was consistently the rate-limiting step for acetate-oxidizing exoelectrogenesis, with its pH-varying charge transfer resistance R{sub 2} ranging from 2- to 321-fold higher than the pH-independent charge transfer resistance R{sub 1}. The associated capacitance C{sub 2} was 2-3 orders of magnitude larger than C{sub 1}. R{sub 2} was lowest near E{sub KA} and increased by several orders of magnitude at anode potentials above E{sub KA}, while R{sub 1} was nearly stable. However, fits deviated slightly at potentials above E{sub KA} due to emerging impedance possibly associated with diffusion and excessive potential.

  10. Controlled synthesis and optical properties of tunable CdSe quantum dots and effect of pH

    SciTech Connect (OSTI)

    Ratnesh, R. K.; Mehata, Mohan Singh

    2015-09-15

    Cadmium selenide (CdSe) quantum dots (Q-dots) were prepared by using non-coordinating solvent octadecene instead of coordinating agent trioctylphosphine oxide (TOPO). Reaction processes were carried out at various temperatures of 240°, 260°, 280° and 300° C under nitrogen atmosphere. The prepared CdSe Q-dots which are highly stable show uniform size distribution and tunable optical absorption and photoluminescence (PL). The growth temperature significantly influenced the particle size; spectral behavior, energy band gap and PL intensity and the full width at half maxima (FWHM). Three different methods were employed to determine the particle size and the average particle size of the CdSe Q-dots is 3.2 - 4.3 nm, grown at different temperatures. In addition, stable and mono-dispersed water soluble CdSe Q-dots were prepared by the ligand exchange technique. Thus, the water soluble Q-dots, which are sensitive to the basic pH may be important for biological applications.

  11. REE Sorption Study of Sieved -50 +100 mesh Media #1 in Brine #1 with Different Starting pH's at 70C

    SciTech Connect (OSTI)

    Gary Garland

    2015-07-21

    This dataset described shaker table experiments ran with sieved -50 +100 mesh media #1 in brine #1 that have 2ppm each of the 7 REE metals at different starting pH's of 3.5, 4.5, and 5.5. The experimental conditions are 2g media to 150mL of REE solution, at 70C.

  12. Sorption and extraction of lactic and succinic acids at pH > pK[sub a1]. 1: Factors governing equilibria

    SciTech Connect (OSTI)

    Tung, L.A.; King, C.J. )

    1994-12-01

    Many fermentation to produce carboxylic acid operate most effectively at pH above pK[sub a1] of the acid product, under which conditions the acid is largely in the carboxylate form. One approach to acid recovery from such solutions is to use solid sorbents or liquid extractants that are strongly enough basic to provide substantial capacity even at moderately high values of pH. Data are presented for sorption of lactic and succinic acids by several commercially available basic polymeric sorbents. Performance at pH > pK[sub a1] is a function of sorbent basicity, and apparent pK[sub a] or monomer pK[sub a] can be used to predict sorbent performance. Data are also presented for the extraction of the acids by two commercial amine extractants, Alamine 336 and Amberlite LA-2, in various diluents. The extractants sustain capacity to higher pH in diluents that stabilize the acid-amine complex. Secondary amines provide higher capacities than do tertiary amines in diluents that solvate the additional proton. Competitive uptakes of sulfate, phosphate, and carboxylate were also measured.

  13. Synthesis and crystal and molecular structure of a tetranuclear complex of samarium(III) [Sm{sub 4}({mu}-{eta}{sup 2}:{eta}{sup 2}-Ph{sub 2}N{sub 2}){sub 4}({mu}{sub 3}-PhN){sub 2}Thf{sub 6}]{center_dot}2Thf

    SciTech Connect (OSTI)

    Emelyanova, N.S.; Bochkarev, M.N.; Schumann, H. |

    1994-10-01

    A samarium(III) tetranuclear complex containing a planar metallocycle in the form of a slightly distorted rhombus was synthesized by the interaction of azobenzene with (C{sub 10}H{sub 8})SmThf{sub 3}, where C{sub 10}H{sub 8} is naphthalene and Thf is tetrahydrofuran. The N=N bond of the azobenzene with molecule undergoes two-electron and four-electron reduction upon complex formation; the Ph{sub 2}N{sub 2}{sup 2-} and Ph{sub 2}N{sup 2-} ligands fulfill the functions of the {mu}{sub 2} and {mu}{sub 3} bridges. The coordination number of the samarium atoms (taking into consideration the Thf ligands) is equal to 7. Half of the samarium atoms participate in the {eta}{sub 2} interaction with the phenyl rings of the Ph{sub 2}N{sub 2}{sup 2-} bridges.

  14. ASE Certification for Light/Medium Duty CNG/LPG Training Programs

    Alternative Fuels and Advanced Vehicles Data Center

  15. Influence of pH on electrochemical and corrosion behavior of aluminum in media containing oxo anions of the oxidizing type

    SciTech Connect (OSTI)

    Mikhailovskii, Y.N.; Berdzenishvili, G.A.

    1986-07-01

    This paper investigates the influence of CrO/sub 4//sup 2 -/, MnO/sub 4//sup -/, VO/sub 4//sup 3 -/, MoO/sub 4//sup 2 -/, and WO/sub 4//sup 2 -/ on the potential and corrosion rate of aluminum in chloride-fluoride solutions with pH from 2 to 12. In neutral solutions on aluminum there is formed a mixed oxide-hydroxide layer with excess hydroxides which inhibits the corrosion of aluminum. Vanadates, molybdates, and tungstates in neutral solutions also formed mixed oxide-hydroxide layers with excess OH/sup -/ on the surface of the aluminum. This paper clearly displays the general laws of variation of the corrosion-electrochemical properties of aluminum in relation to pH in the presence of oxoanions of the oxidizing type.

  16. Effects of pH and stress intensity on crack growth rate in Alloy 600 in lithiated + borated water at high temperatures

    SciTech Connect (OSTI)

    Rebak, R.B.; Szklarska-Smialowska, Z.; McIlree, A.R.

    1992-12-31

    Primary water stress corrosion cracking studies were performed on Alloy 600. Constant load tests were conducted at 330 and 350{degrees}C in solutions containing dissolved hydrogen, boric acid (0 < B < 1200 ppm) and lithium hydroxide (0 < Li < 10 ppm). In the PWR working conditions range, that is, 6.9 < pH < 7.4 (or 0.5 ppm < Li < 3.5), there is little effect of the solution pH on the intergranular crack growth rate (IGSCC). However, there is a strong influence of the stress intensity on the IGSCC. K{sub ISCC} {approx} 5-10 MPa{radical}m. Dissolution plays an important role in the IGSCC process.

  17. Draft Genome Sequence of thermoalkaliphilic Caldalkalibacillus thermarum strain TA2.A1 Reveals Molecular Adaptations to Extreme pH and Temperature

    SciTech Connect (OSTI)

    Kalamorz, Falk; Keis, Stefanie; Stanton, Jo-Ann; Brown, Steven D; Klingeman, Dawn Marie; Land, Miriam L; Han, Cliff; Martin, S L.; Morgan, Hugh; Cook, Greg

    2011-01-01

    The genes and molecular machines that allow for a thermoalkaliphilic lifestyle have not been defined. To address this goal, we report on the improved high-quality draft genome sequence of Caldalkalibacillus thermarum strain TA2.A1, an obligately aerobic bacterium that grows optimally at pH 9.5 and 65 to 70 C on a wide variety of carbon and energy sources.

  18. Influence of CO sub 2 -HCO sub 3 sup minus levels and pH on growth, succinate production, and enzyme activities of Anaerobiospirillum succiniciproducens

    SciTech Connect (OSTI)

    Samuelov, N.S.; Lamed, R.; Lowe, S. ); Zeikus, J.G. Michigan Biotechnology Inst., Lansing )

    1991-10-01

    Growth and succinate versus lactate production from glucose by Anaerobiospirillum succiniciproducens was regulated by the level of available carbon dioxide and culture pH. At pH 7.2, the generation time was almost doubled and extensive amounts of lactate were formed in comparison with growth at pH 6.2. The succinate yield and the yield of ATP per mole of glucose were significantly enhanced under excess-CO{sub 2}-HOC{sub 3}{sup {minus}} growth conditions and suggest that there exists a threshold level of Co{sub 2} for enhanced succinate production in A. succiniciproducens. Glucose was metabolized via the Embden-Meyerhof-Parnas route, and phosphoenopyruvate carboxykinase levels increased while lactate dehydrogenase and alcohol dehydrogenase levels decreased under excess-CO{sub 2}-HCO{sub 3}{sup {minus}} growth conditions. Kinetic analysis of succinate and lactate formation in continuous culture indicated that the growth rate-linked production rate coefficient (K) cells was much higher for succinate (7.2 versus 1.0 g/g of cells per h) while the non-growth-rate-related formation rate coefficient (K{prime}) was higher for lactate (1.1 versus 0.3 g/g of cells per h). The data indicate that A. succiniciproducens, unlike other succinate-producing anaerobes which also form propionate, can grow rapidly and form high final yields of succinate at pH 6.2 and with excess CO{sub 2}-HCO{sub 3}{sup {minus}} as a consequence of regulating electron sink metabolism.

  19. Effect of hydrogen sulfide partial pressure, pH, and chloride content on the SSC resistance of martensitic stainless steels and martensitic precipitation hardening stainless steels

    SciTech Connect (OSTI)

    Vitale, D.D.

    1999-11-01

    Centrifugal compressor applications require the use of martensitic stainless and martensitic precipitation hardening stainless steels at high hydrogen sulfide partial pressures. These materials do not perform well when tested with standard TM0177 test solutions. This paper describes the effect of hydrogen sulfide partial pressure, pH, and chloride content on their SSC resistance and explains their successful field operational experience. Environmental limits are determined for several materials and heat treat conditions.

  20. Influence of the pH value of a colloidal gold solution on the absorption spectra of an LSPR-assisted sensor

    SciTech Connect (OSTI)

    Zhu, Jin; Li, Wenbin; Zhu, Mao; Zhang, Wei; Niu, Wencheng; Liu, Guohua

    2014-03-15

    The localized surface plasmon resonances (LSPRs) of gold particles assembled on a crystal plate are a powerful tool for biological sensors. Here, we prepare gold colloids in different pH solutions. We monitor the effects of the particle radius and particle coverage on the absorption spectra of AT-cut (r-face dihedral angle of about 3°) crystal plates supporting gold nanoparticles. The surface morphologies were monitored on silicon dioxide substrates using ultraviolet and visible (UV-vis) spectroscopy, and atomic force microscopy (AFM). The results showed that the gold particle coverage decreases with increasing pH value of the gold colloid solution. This phenomenon demonstrates that self-assembled gold surfaces were formed via the electrostatic adsorption of gold particles on the positively charged, ionized amino groups on the crystal plates in the acidic solution. The spectrum of gold nanoparticles with different coverage degree on the crystal plates showed that the LSPR properties are highly dependent on pH.

  1. Watershed scale fungal community characterization along a pH gradient in a subsurface environment co-contaminated with uranium and nitrate

    SciTech Connect (OSTI)

    Jasrotia, Puja; Green, Stefan; Canion, Andy; Overholt, Will; Prakash, Om; Wafula, Dennis; Hubbard, Daniela; Watson, David B; Schadt, Christopher Warren; Brooks, Scott C; Kostka,

    2014-01-01

    The objective of this study was to characterize fungal communities in a subsurface environment co-contaminated with uranium and nitrate at the watershed scale, and to determine the potential contribution of fungi to contaminant transformation (nitrate attenuation). The abundance, distribution and diversity of fungi in subsurface groundwater samples were determined using quantitative and semi-quantitative molecular techniques, including quantitative PCR of eukaryotic SSU rRNA genes and pyrosequencing of fungal internal transcribed spacer (ITS) regions. Potential bacterial and fungal denitrification was assessed in sediment-groundwater slurries amended with antimicrobial compounds and in fungal pure cultures isolated from subsurface. Our results demonstrate that subsurface fungal communities are dominated by members of the phylum Ascomycota, and a pronounced shift in fungal community composition occurs across the groundwater pH gradient at the field site, with lower diversity observed under acidic (pH < 4.5) conditions. Fungal isolates recovered from subsurface sediments were shown to reduce nitrate to nitrous oxide, including cultures of the genus Coniochaeta that were detected in abundance in pyrosequence libraries of site groundwater samples. Denitrifying fungal isolates recovered from the site were classified, and found to be distributed broadly within the phylum Ascomycota, and within a single genus within the Basidiomycota. Potential denitrification rate assays with sediment-groundwater slurries showed the potential for subsurface fungi to reduce nitrate to nitrous oxide under in situ acidic pH conditions.

  2. Influence of pH and chloride concentration on the pitting and crevice corrosion behavior of high-alloy stainless steels

    SciTech Connect (OSTI)

    Pardo, A.; Otero, E.; Merino, M.C.; Lopez, M.D.; Utrilla, M.V.; Moreno, F.

    2000-04-01

    Localized corrosion resistance (pitting and crevice corrosion) of two high-alloy stainless steels (superduplex and superaustenitic) was studied in solutions with chloride concentrations of 200, 400, 600, and 6,000 ppm at pH values ranging from 2 to 6.5. Critical temperatures for pitting and crevice corrosion were calculated for these test media using electrochemical techniques (continuous current). From results obtained for cyclic polarization, the critical pitting temperature (CPT) and critical crevice temperature (CCT) of these materials in the different test media were determined. Under the tested conditions, the resistance of these materials to localized corrosion was very high. Only in test conditions of higher aggressivity (6,000 ppm CL{sup {minus}} and pH 6.5), pitting or crevice corrosion was observed. In those cases, values of pitting potential (E{sub pit}) and crevice potential (E{sub cre}) showed little tendency to decrease with an increase in CL{sup {minus}} concentration, temperature, and pH. Moreover, the CPT of these steels was determined in a ferric chloride (FeCl{sub 3}) medium, which corresponds to the standard ASTM G48 practice (Method A).

  3. Effects of water temperature and pH on toxicity of terbufos, trichlorfon, 4-nitrophenol and 2,4-dinitrophenol to the amphipod Gammarus pseudolimnaeus and rainbow trout (Oncorhynchus mykiss)

    SciTech Connect (OSTI)

    Howe, G.E.; Marking, L.L.; Bills, T.D.; Rach, J.J. . National Fisheries Research Center); Mayer, F.L. Jr. . Environmental Research Lab.)

    1994-01-01

    Acute toxicity tests were conducted to determine (a) the individual and interactive effects of water temperature (7, 12, 17 C), pH (6.5, 7.5, 8.5, 9.5), and time on the toxicity of terbufos, trichlorfon, 4-nitrophenol, and 2,4-dinitrophenol to rainbow trout (Oncorhynchus mykiss) and the amphipod Gammarus pseudolimnaeus, and (b) the individual and interactive effects of water temperature and pH on chemical bioconcentration during acute tests with rainbow trout and Gammarus exposed to terbufos, 4-nitrophenol, and 2,4-dinitrophenol. The toxicity of all four chemicals was significantly affected by pH in all tests, except for Gammarus exposed to terbufos. The toxicity of terbufos to rainbow trout and Gammarus was less at pH 7.5 than at higher or lower pH. The toxicity of both nitrophenols decreased as pH increased, whereas the toxicity of trichlorfon increased with pH. The effect of pH on trichlorfon toxicity decreased with temperature. Temperature significantly affected the toxicity of all four chemicals to both species. Toxicity increased with temperature in all tests, except for rainbow trout exposed to nitrophenols; toxicity decreased as temperature increased for rainbow trout. Chemical bioconcentration was also significantly affected by temperature and pH and was directly related to toxicity in most tests. Significant interactive effects between toxicity-modifying factors were also frequently observed. Temperature and pH effects on chemical toxicity need to be considered in chemical hazard assessment to ensure adequate protection of aquatic organisms.

  4. Multivariable analysis of the effects of Li, H{sub 2}, and pH on PWR primary water stress corrosion cracking. Final report

    SciTech Connect (OSTI)

    Eason, E.D.; Merton, A.A.; Wright, J.E.

    1996-05-01

    The effects of Li, pH and H, on primary water stress corrosion cracking (PWSCC) of Alloy 600 were investigated for temperatures between 320 and 330{degrees}C. Specimens included in the study were reverse U-bends (RUBs) made from several different heats of Alloy 600. The characteristic life, {eta}, which represents the time until 63.2% of the population initiates PWSCC, was computed using a modified Weibull statistical analysis algorithm and was analyzed for effects of the water chemistry variables previously mentioned. It was determined that the water chemistry variables are less sensitive than the metallurgical characteristics defined by the heat, heat treatment and initial stress state of the specimen (diameter and style of RUB); the maximum impact of chemistry effects was 0.13 to 0.59 standard deviations compared to a range of three (3) standard deviations for all variables. A first-order model was generated to estimate the effect of changes in pH, Li and H, concentrations on the characteristic life. The characteristic time to initiate cracks, {eta}, is not sensitive to Li and H{sub 2} concentrations in excess of 3.5 ppm and 25 ml/kg, respectively. Below these values, (1) {eta} decreases by {approximately}20% when [Li] is increased from 0.7 to 3.5 ppm; (2) {eta} decreases by {approximately}9% when [H{sub 2}] is increased from 13.1 to 25.0 ml/kg; and (3) {eta} decreases by {approximately}14% when pH is increased from 7.0 to 7.4, in each case holding the other two variables constant.

  5. Energia del Caribe, S.A.- FE DKT. NO. 16-18-NG

    Energy.gov [DOE]

    The Office of Fossil Energy gives notice of receipt of an Application filed February 10, 2016 by Energia del Caribe, S.A. (Energia), requesting long-term authorization to export natural gas to...

  6. Techgen S.A. de C.V.- 14-94-NG

    Energy.gov [DOE]

    The Office of Fossil Energy gives notice of receipt of an Application filed July 15, 2014, by Techgen S.A. de C.V.(Techgen), seeking a long-term multi-contract authorization to export up to 56.2...

  7. POLICY FLASH 2013-55 FPDS-NG Change Management Notice for the...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Questions concerning this policy flash should be directed to Kevin M. Smith, of the Contract and Financial Assistance Policy Division, at Kevin.M.Smith@hq.doe.gov, or at (202) ...

  8. POLICY FLASH 2013-55 FPDS-NG Change Management Notice for the...

    Energy.gov (indexed) [DOE]

    policy-flashes Questions concerning this policy flash should be directed to Kevin M. Smith, of the Contract and Financial Assistance Policy Division, at Kevin.M.Smith@hq.doe.gov...

  9. Microsoft Word - NG_ResQrySys_UsersGuide_Sept2015-FINAL.docx

    Gasoline and Diesel Fuel Update

    ... the Query System is a web-based system, no download or installation is necessary. All that is needed to run the Query System is a PC with up-to-date web-browsing software (such ...

  10. Emissions from In-Use NG, Propane, and Diesel Fueled Heavy Duty...

    Energy.gov (indexed) [DOE]

    Emissions tests of in-use heavy-duty vehicles showed that, natural gas- and propane-fueled vehicles have high emissions of NH3 and CO, compared to diesel vehicles, while meeting ...

  11. Emissions from In-Use NG, Propane, and Diesel Fueled Heavy Duty Vehicles

    Office of Energy Efficiency and Renewable Energy (EERE)

    Emissions tests of in-use heavy-duty vehicles showed that, natural gas- and propane-fueled vehicles have high emissions of NH3 and CO, compared to diesel vehicles, while meeting certification requirements

  12. Microsoft PowerPoint - Sweetnam NG Disc Slides - April 7 2010 final.ppt [Compatibility Mode]

    Gasoline and Diesel Fuel Update

    Gas: U.S. Markets in a Global Context 2010 Energy Conference U.S. Energy Information Administration Johns Hopkins University - SAIS p y April 7, 2010 - Washington, DC Natural Gas: U.S. Markets is a Global Context, April 7, 2010 Richard Newell, March 2, 2010 1 Richard Newell, SAIS, December 14, 2009 1 April 7, 2010 Washington, DC Discussion Outline * Setting the context * Demand/supply outlook for 3 regions - United States United States - OECD Europe - China * Evolution of the global gas market -

  13. Microsoft Word - fuel_comparison_chart NG Updates 10_27_B_GCM...

    Alternative Fuels and Advanced Vehicles Data Center

    Natural g as, coal, o r, woody biomass Natural g as, methanol, and electrolysis o f water Coal, n uclear, natural g as, hydroelectric, and s mall percentages of w ind a nd solar ...

  14. Effect of pH on the release of radionuclides and chelating agents from cement-solidified decontamination ion-exchange resins collected from operating nuclear power stations

    SciTech Connect (OSTI)

    McIsaac, C.V.; Akers, D.W.; McConnell, J.W. )

    1991-06-01

    Data are presented on the physical stability and leachability of radionuclides and chelating agents from cement-solidified decontamination ion-exchange resin wastes collected from two operating commercial light water reactors. Small-scale waste--form specimens collected during solidifications performed at the Brunswick Steam Electric Plant Unit 1 and at the James A. FitzPatrick Nuclear Power Station were leach-tested and subjected to compressive strength testing in accordance with the Nuclear Regulatory Commission's Technical Position on Waste Form'' (Revision 1). Samples of untreated resin waste collected from each solidification vessel before the solidification process were analyzed for concentrations of radionuclides, selected transition metals, and chelating agents to determine the quantities of these chemicals in the waste-form specimens. The chelating agents included oxalic, citric, and picolinic acids. In order to determine the effect of leachant chemical composition and pH on the stability and leachability of the waste forms, waste-form specimens were leached in various leachants. Results of this study indicate that differences in pH do not affect releases from cement-solidified decontamination ion-exchange resin waste forms, but that differences in leachant chemistry and the presence of chelating agents may affect the releases of radionuclides and chelating agents. Also, this study indicates that the cumulative releases of radionuclides and chelating agents are similar for waste- form specimens that decomposed and those that retained their general physical form. 36 refs., 60 figs., 28 tabs.

  15. In situ infrared study on the effect of pH on anion adsorption at Pt(111) electrodes from acid sulfate solutions

    SciTech Connect (OSTI)

    Faguy, P.W.; Marinkovic, N.S.; Adzic, R.R.

    1996-01-24

    From the in situ FTIR spectroscopy of the electrode/electrolyte solution interface at pH values of 1.2, 2.0 and 3.4, it can be confirmed that the adsorbate associated with the anomalous peaks in the cyclic voltammetry of Pt(111) in sulfate- and bisulfate-containing solutions is not the sulfate anion. The structure of the bisulfate-like adsorbate is tentatively postulated to be a sulfate ion/hydronium ion ion pair: SO{sub 4}{sup 2-}xH{sub 3}O{sup +}. Over the potentials in question, and only in solutions with appreciable HSO{sub 4}{sup -} concentration, can IR bands be found that are associated with the adsorbed species. 36 refs., 4 figs., 1 tab.

  16. Steady-state diagenetic model for dissolved carbonate species and pH in the pore waters of oxic and suboxic sediments

    SciTech Connect (OSTI)

    Boudreau, B.P.

    1987-07-01

    An open-system diagenetic (transport) model is presented which accounts for the concurrent behavior of all the dissolved carbonate species as well as hydrogen and hydroxyl ions in the pore waters of marine sediments during the oxic and suboxic decay of organic-matter. The model includes interconversion between the dissolved carbonate species due to associationdissociation reactions as well as production by organic decay and CaCO/sub 3/ dissolution. The existence of rapid associationdissociation reactions has important consequences. First, the transport of a dissolved carbonate species is facilitated, because it can react and diffuse as another carbonate species. This action modifies the concentration profiles which would be expected without interconversion. As a consequence, the rate of CaCO/sub 3/ dissolution is increased because it is more difficult for CO/sub 3//sup =/ to reach and maintain the saturation concentration. Finally, CO/sub 2/(aq) and HCO/sub 3//sup -/ produced by decay affect the concentration of CO/sub 3//sup =/ and, therefore, the saturation state of pore waters with respect to carbonate minerals. The model is applied to the carbonate alkalinity and pH data from the Guatemala Basin and MANOP Site C. The model reproduces the sharp near-surface minimum in pH, observed at the Guatemala Basin sites; however, the carbonate alkalinity increase is underpredicted. This model result implies that there is an additional source of HCO/sub 3//sup -/ that is not presently recognized, probably in the form of sulfate reduction at depth.

  17. Highly robust hydrogen generation by bio-inspired Ir complexes for dehydrogenation of formic acid in water: Experimental and theoretical mechanistic investigations at different pH

    SciTech Connect (OSTI)

    Wang, Wan -Hui; Fujita, Etsuko; Ertem, Mehmed Z.; Xu, Shaoan; Onishi, Naoya; Manaka, Yuichi; Suna, Yuki; Kambayashi, Hide; Muckerman, James T.; Himeda, Yuichiro

    2015-07-30

    Hydrogen generation from formic acid (FA), one of the most promising hydrogen storage materials, has attracted much attention due to the demand for the development of renewable energy carriers. Catalytic dehydrogenation of FA in an efficient and green manner remains challenging. Here, we report a series of bio-inspired Ir complexes for highly robust and selective hydrogen production from FA in aqueous solutions without organic solvents or additives. One of these complexes bearing an imidazoline moiety (complex 6) achieved a turnover frequency (TOF) of 322,000 h⁻¹ at 100 °C, which is higher than ever reported. The novel catalysts are very stable and applicable in highly concentrated FA. For instance, complex 3 (1 μmol) affords an unprecedented turnover number (TON) of 2,050,000 at 60 °C. Deuterium kinetic isotope effect experiments and density functional theory (DFT) calculations employing a “speciation” approach demonstrated a change in the rate-determining step with increasing solution pH. This study provides not only more insight into the mechanism of dehydrogenation of FA but also offers a new principle for the design of effective homogeneous organometallic catalysts for H₂ generation from FA.

  18. Highly robust hydrogen generation by bio-inspired Ir complexes for dehydrogenation of formic acid in water: Experimental and theoretical mechanistic investigations at different pH

    DOE PAGES-Beta [OSTI]

    Wang, Wan -Hui; Fujita, Etsuko; Ertem, Mehmed Z.; Xu, Shaoan; Onishi, Naoya; Manaka, Yuichi; Suna, Yuki; Kambayashi, Hide; Muckerman, James T.; Himeda, Yuichiro

    2015-07-30

    Hydrogen generation from formic acid (FA), one of the most promising hydrogen storage materials, has attracted much attention due to the demand for the development of renewable energy carriers. Catalytic dehydrogenation of FA in an efficient and green manner remains challenging. Here, we report a series of bio-inspired Ir complexes for highly robust and selective hydrogen production from FA in aqueous solutions without organic solvents or additives. One of these complexes bearing an imidazoline moiety (complex 6) achieved a turnover frequency (TOF) of 322,000 h⁻¹ at 100 °C, which is higher than ever reported. The novel catalysts are very stablemore » and applicable in highly concentrated FA. For instance, complex 3 (1 μmol) affords an unprecedented turnover number (TON) of 2,050,000 at 60 °C. Deuterium kinetic isotope effect experiments and density functional theory (DFT) calculations employing a “speciation” approach demonstrated a change in the rate-determining step with increasing solution pH. This study provides not only more insight into the mechanism of dehydrogenation of FA but also offers a new principle for the design of effective homogeneous organometallic catalysts for H₂ generation from FA.« less

  19. pH- and mol-ratio dependent formation of zinc(II) coordination polymers with iminodiacetic acid: Synthesis, spectroscopic, crystal structure and thermal studies

    SciTech Connect (OSTI)

    Ni Lubin; Zhang Ronghua; Liu Qiongxin; Xia Wensheng; Wang Hongxin; Zhou Zhaohui

    2009-10-15

    Three novel zinc coordination polymers (NH{sub 4}){sub n}[Zn(Hida)Cl{sub 2}]{sub n} (1), [Zn(ida)(H{sub 2}O){sub 2}]{sub n} (2), [Zn(Hida){sub 2}]{sub n}.4nH{sub 2}O (3) (H{sub 2}ida=iminodiacetic acid) and a monomeric complex [Zn(ida)(phen)(H{sub 2}O)].2H{sub 2}O (4) (phen=1,10-phenanthroline) have been synthesized and characterized by X-ray diffraction methods. 1 and 2 form one-dimensional (1-D) chain structures, whereas 3 exhibits a three-dimensional (3-D) diamondoid framework with an open channel. The mononuclear complex 4 is extended into a 3-D supramolecular architecture through hydrogen bonds and pi-pi stacking. Interestingly, cyclic nonplanar tetrameric water clusters are observed that encapsulated in the 3-D lattice of 4. Based on {sup 1}H and {sup 13}C NMR observations, there is obvious coordination of complex 2 in solution, while 1 and 3 decompose into free iminodiacetate ligand. Monomer [Zn(ida)(H{sub 2}O){sub 3}] (5) is considered as a possible discrete species from 2. These coordination polymers can serve as good molecular precursors for zinc oxide. - Text3: Reaction of zinc salt with iminodiacetic acid afforded three new coordination polymers 1-3 and a monomer 4, which is dependent on pH value and molar ratio of the reactants.

  20. Amino acid modified Ni catalyst exhibits reversible H2 oxidation/production over a broad pH range at elevated temperatures

    SciTech Connect (OSTI)

    Dutta, Arnab; DuBois, Daniel L.; Roberts, John A.; Shaw, Wendy J.

    2014-11-18

    Hydrogenases interconvert H2 and protons at high rates and with high energy efficiencies, providing inspiration for the development of molecular catalysts. Studies designed to determine how the protein scaffold can influence a catalytically active site has led to the synthesis of amino acid derivatives, [Ni(PCy2NAmino acid2)2]2+ (CyAA), of [Ni(PR2NR'2)2]2+ complexes. It is shown that these CyAA derivatives can catalyze fully reversible H2 production/oxidation, a feature reminiscent of enzymes. The reversibility is achieved in acidic aqueous solutions, 0.25% H2/Ar, and elevated temperatures (tested up to 348 K) for the glycine (CyGly), arginine (CyArg), and arginine methyl ester (CyArgOMe) derivatives. As expected for a reversible process, the activity is dependent upon H2 and proton concentration. CyArg is significantly faster in both directions than the other two derivatives (~300 s-1 H2 production and 20 s-1 H2 oxidation; pH=1, 348 K). The significantly slower rates for CyArgOMe (35 s-1 production and 7 s-1 oxidation) compared to CyArg suggests an important role for the COOH group during catalysis. That CyArg is faster than CyGly (3 s-1 production and 4 s-1 oxidation under the same conditions) suggests that the additional structural features imparted by the guanidinium groups facilitate fast and reversible H2 addition/release. These observations demonstrate that appended, outer coordination sphere amino acids work in synergy with the active site and can play an equally important role for synthetic molecular electrocatalysts as the protein scaffold does for redox active enzymes. This work was funded by the Office of Science Early Career Research Program through the US DOE, BES (AD, WJS), and the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the US DOE, BES (DLD, JASR). PNNL is operated by Battelle for the US DOE.

  1. Un~ted States Env~ronmental Monltor~ng EPA.600 '4-88, 021 Envtronmenta...

    Office of Legacy Management (LM)

    ... a i r i n t o pressure tanks. The equipment c o n t i n u o u s l y samples af r over 5 7- day p e r i o d and s t o r e s approximately I m o f a i r I n t h e pressure tanks. ...

  2. Philosophy\tof\tNetwork\tOpera3ng Systems\tand\tIntent\tAPIs Inder...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... fron0er, lots of community interest and efforts * Congress - Policy as a Service, uses SQL Policy Language, Interfaces to OpenStack modules * Group-based Policy (GBP) - ...

  3. Bear Head LNG Corporation and Bear Head LNG (USA), LLC- FE Dkt No. 15-14-NG

    Energy.gov [DOE]

    On January 23, 2015, Bear Head LNG Corporation and Bear Head LNG (USA), LLC (together, “Bear Head LNG”), filed an application for long-term, multi-contract authorization to engage in imports from,...

  4. Energia del Caribe, S.A. (Energia)- FE DKT. NO. 16-18-NG- EXPORT TO MEXICO

    Energy.gov [DOE]

    The Office of Fossil Energy gives notice of receipt of an Application filed February 10, 2016 by Energia del Caribe, S.A. (Energia), requesting long-term authorization to export natural gas to...

  5. The?Spectrum?of?Data?Intensive? Compu6ng?Ac6vi6es?at?L...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    oneyoumightwanttopayaFen5on to...) StandardApproach * KalmanBucysolvedproblemsexactlyfor linearsystems,Gaussiannoise,ad...

  6. The characteristic of carbon-coated LiFePO{sub 4} as cathode material for lithium ion battery synthesized by sol-gel process in one step heating and varied pH

    SciTech Connect (OSTI)

    Triwibowo, J.; Yuniarti, E.; Suharyadi, E.

    2014-09-25

    This research has been done on the synthesis of carbon coated LiFePO{sub 4} through sol-gel process. Carbon layer serves for improving electronic conductivity, while the variation of pH in the sol-gel process is intended to obtain the morphology of the material that may improve battery performance. LiFePO{sub 4}/C precursors are Li{sub 2}CO{sub 3}, NH{sub 4}H{sub 2}PO{sub 4} and FeC{sub 2}O{sub 4}.H{sub 2}O and citric acid. In the synthesis process, consisting of a colloidal suspension FeC{sub 2}O{sub 4}.H{sub 2}O and distilled water mixed with a colloidal suspension consisting of NH{sub 4}H{sub 2}PO{sub 4}, Li{sub 2}CO{sub 3}, and distilled water. Variations addition of citric acid is used to control the pH of the gel formed by mixing two colloidal suspensions. Sol in this study had a pH of 5, 5.4 and 5.8. The obtained wet gel is further dried in the oven and then sintered at a temperature 700C for 10 hours. The resulting material is further characterized by XRD to determine the phases formed. The resulting powder morphology is observed through SEM. Specific surface area of the powder was tested by BET, while the electronic conductivity characterized with EIS.

  7. Richard Gerber! Acting NERSC User Services Group Lead Edison Overview

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Acting NERSC User Services Group Lead Edison Overview --- 1 --- October 1 0, 2 013 Edison Addresses NERSC's Workload Needs 2 Characteris3c Descrip3on Comment Processor Intel I vy B ridge 2 .6 G Hz Fast, c u>ng---edge, c ommodity processor Node Dual---socket, 6 4 G B 1 866 M Hz m emory Large m emory p er n ode Excellent m emory b andwidth Interconnect Cray A ries, d ragonfly t opology Excellent l atency & b andwidth Excellent s caling AdapQve r ouQng e ases c ongesQon Storage 6.48 PB 140 G

  8. TrinityHPCUserForum.9.8.14.pptx

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Trinity: A dvanced T echnology S ystem for t he A SC P rogram Manuel Vigil Trinity Project Director High Performance Computing Division Los Alamos National Laboratory HPC U ser F orum September 1 7, 2 014 LA---UR---14---27024 NERSC-8 and Trinity team activities Market s urveys NERSC---8 Trinity Market s urveys Crea6ng requirements Release R FP Vendor S elec6on Some j oint nego6a6ons Common b ase SOW l anguage? Separate S OWs Separate S OWs Joint Nego6a6ons Nego6a6ons Market s urveys Con$nue t o

  9. Effect of pH treatment on K-shell x-ray intensity ratios and K-shell x-ray-production cross sections in ZnCo alloys

    SciTech Connect (OSTI)

    Kup Aylikci, N.; Aylikci, V.; Tirasoglu, E.; Cengiz, E.; Kahoul, A.; Karahan, I. H.

    2011-10-15

    In this study, empirical and semiempirical K-shell fluorescence yields ({omega}{sub K}) and K{beta}/K{alpha} intensity ratios from the available experimental data for elements with 23{<=}Z{<=}30 were calculated to compare them with elements in different alloys. The experimental data are fitted using the quantity [{omega}{sub K}/(1-{omega}{sub K})]{sup 1/4} vs Z to deduce the empirical K-shell fluorescence yields and K{beta}/K{alpha} intensity ratios. The empirical and semiempirical K-shell fluorescence yield values were used to calculate the K x-ray-production cross-section values for pure Co and Zn elements. Also, {sigma}{sub K{alpha}}, {sigma}{sub K{beta}} production cross sections and K{beta}/K{alpha} intensity ratios of Co and Zn have been measured in pure metals and in different alloy compositions which have different pH values. The samples were excited by 59.5-keV {gamma} rays from a {sup 241}Am annular radioactive source. K x rays emitted by samples were counted by an Ultra-LEGe detector with a resolution of 150 eV at 5.9 keV. The effect of pH values on alloy compositions and the effect of alloying on the fluorescence parameters of Co and Zn were investigated. The x-ray fluorescence parameters of Co and Zn in the alloying system indicate significant differences with respect to the pure metals. These differences are attributed to the reorganization of valence shell electrons and/or charge transfer phenomena.

  10. SEMINAR Ted Sargent PhD

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    cells that harvest wavelengths beyond 1 m were first reported in 2005, and were based on the application of quantum-size-effect-tuned infra- red-bandgap colloidal quantum dots. ...

  11. NREL: Photovoltaics Research - Jeffery Aguiar, Ph. D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Implications for Radiation Damage Evolution and Fast Ion Conduction."The Journal of Chemical Physics 140(19); 194701. Patel, M.K.; Tallman, D. J.; Valdez, J. A.; Aguiar, J.A.;...

  12. PM_Ph_II_CAIP_F.book

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... A 10.75-inch diameter steel casing was installed to a depth ... suitable for the determination of heat flow values ... Np And Pu Sorption to Manganese Oxide Minerals (Zhao et al., ...

  13. Seonah Kim, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Fatty Acid Decarboxylase Engineering for Continuous Hydrocarbon Fuel Production (PI) Computational Pyrolysis Consortium - Zeolite Chemistry (subtask leader) Biochemical Process ...

  14. Review. Ernie Perry, PhD

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    and what I see in terms of freight innovation and infrastructure to support our ... in freight planning and collaboration, and in freight policy and program areas. ...

  15. Guest Speaker: Jeff Thompson, PhD

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    NYPD Detective Jeff Thompson will discuss how crisis negotiators have de-escalated tense situations, demonstrated empathy, built rapport and trust, and successfully influenced ...

  16. Microsoft Word - Daum-PH.doc

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Effects of Spectral Dispersion of Cloud Droplet Size Distributions on Radiative Properties of Clouds and Dispersion Forcing P. H. Daum and Y. Liu Brookhaven National Laboratory Atmospheric Sciences Division Upton, New York Introduction Most studies of the indirect aerosol effect on cloud radiative properties have considered only changes in N caused by increasing the cloud condensation nucleus (CCN) concentration. In such studies, it is assumed that the change in r e , due to the increase in N,

  17. PhD and MPhil Thesis Classes

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... in Chapter 4, both in terms of the differential cross ... elastic scattering data to search for a light dark matter ... collimator the secondary meson beam enter the decay pipe. ...

  18. Microsoft Word - S08557_PhI

    Office of Legacy Management (LM)

    Office of Legacy Management Mound, Ohio, Site Phase I Groundwater Monitoring Report ... left blank LMSMNDS08557 Office of Legacy Management Mound, Ohio, Site Phase I ...

  19. Lieve Laurens, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Research Interests Dynamic biochemical composition of bioenergy-relevant biomass Coproduct ... Dynamic Biochemical Composition of Bioenergy-Relevant Biomass In order to understand the ...

  20. Ling Tao, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Professional Experience Senior Engineer, National Bioenergy Center, National Renewable ... "Chapter 5: Conversion Technologies for Biofuels and Their Use," in SCOPE Bioenergy & ...

  1. LANL: AOT & LANSCE The Pulse December 2010

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    10 Los Alamos National Laboratory * Est. 1943 The Pulse-Newsletter of the Los Alamos Neutron Science Center and Accelerator Operations and Technology Division I N S I D E 2 From Alex's Desk 3 lANsCe-Ns hosts NNsA ACADemiC AlliANCe CeNter oF exCelleNCe leADer 4 Workshop oN isotope hArvestiNg At the FACility For rAre isotope BeAms iN situ ChArACterizA- tioN oF multiphAse polymeriC mAteriAls upoN DeFormAtioN 5 NeutroN sCAtteriNg reveAls the AtomiC motioN iN A NeW ClAss oF CerAmiC- metAl mAteriAls

  2. Nadya A. Fouad, Ph.D Romila Singh, Ph.D

    Office of Environmental Management (EM)

    ... This research has examined not only engineering as a career choice, but also the choices to take the advanced mathematics ... Journal of Vocational Behavior, 52, 260-269. Burgard, B. ...

  3. Congestion Heat Plot

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    SFTFwaMJpNg

  4. Visible light absorption of TiO{sub 2} materials impregnated with tungstophosphoric acid ethanol–aqueous solution at different pH values. Evidence about the formation of a surface complex between Keggin anion and TiO{sub 2} surfaces

    SciTech Connect (OSTI)

    Rengifo-Herrera, Julián A. Blanco, Mirta N.; Pizzio, Luis R.

    2014-01-01

    Graphical abstract: - Highlights: • TPA impregnation on TiO{sub 2} particles was done at different initial pH values. • Powders characterization evidenced the possible existence of TPA–TiO{sub 2} complexes. • Keggin anion complexed on TiO{sub 2} would be responsible of visible light absorption. - Abstract: TiO{sub 2} particles prepared by the sol–gel method were impregnated at different pH values (1.0, 2.0, 5.0 and 10.0) with a water–ethanol solution (50% V/V) of tungstophosphoric acid (TPA) (0.012 M). Similar preparation was carried out to synthesize TiO{sub 2} impregnated with [WO{sub 4}]{sup 2−} (TiW). These materials were characterized by different techniques such as UV–vis diffuse reflectance spectroscopy (UV–vis DRS), magic angle spinning nuclear magnetic resonance of {sup 31}P ({sup 31}P MAS NMR), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Fourier transform Raman spectroscopy (FT-Raman). Results revealed that TPA–TiO{sub 2} materials exhibit visible light absorption only when impregnation was done at pH 1.0 (TiTPA1) and 2.0 (TiTPA2). TiW powder did not show visible light absorption. XRD patterns show the presence of peaks at 2θ = 25.4° (1 0 1), 37.9° (0 0 4), 47.8° (2 0 0) and 54.3° associated to the anatase phase. Solid NMR, FT-IR and FT-Raman characterization showed that TiTPA1 and TiTPA2 samples contain Keggin ([PW{sub 12}O{sub 40}]{sup 3−}) and lacunary anions ([PW{sub 11}O{sub 39}]{sup 7−}) respectively. On the other hand, FT-Raman results revealed a blue shifting and broadening of the band at 141 cm{sup −1} corresponding to anatase TiO{sub 2} and moreover, a broadening of bands at 900–1100 cm{sup −1} attributed to Keggin structures of TPA. Both spectral changes could be related to the formation of a surface complex between the Keggin anion of TPA and TiO{sub 2} surfaces. This interaction should be responsible for visible light absorption.

  5. NREL: Photovoltaics Research - Joseph J. Berry Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    National Institute of Standards and Technology in Boulder, Colorado, specializing in development and application of narrow band spectroscopies to the studies of III-V quantum dots. ...

  6. NREL: Photovoltaics Research - John F. Geisz, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    303-384-6474 john.geisz@nrel.gov Dr. John Geisz is a principal scientist in the High Efficiency Crystalline Photovoltaics Group at NREL. He received his doctorate in chemical...

  7. NREL: Photovoltaics Research - Daniel J. Friedman, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    303-384-6472 daniel.friedman@nrel.gov Dr. Daniel Friedman is the manager of the High Efficiency Crystalline Photovoltaics Group. He received his doctorate in applied physics...

  8. NREL: Photovoltaics Research - Myles A. Steiner, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Steiner 303-384-7675 Myles.Steiner@nrel.gov Myles Steiner is a scientist in the High Efficiency Crystalline PV group at NREL, working primarily on III-V multijunction solar cells...

  9. NREL: Photovoltaics Research - Pauls Stradins, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Si PV in the Energy Sciences directorate at NREL. The project core lies within the High-Efficiency Crystalline Materials Photovoltaics group. In addition, it involves theory,...

  10. NREL: Photovoltaics Research - David L. Young, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    p. 073502. Young, D.L., B. Egaas, S. Pinegar, and P. Stradins. A new real-time quantum efficiency measurement system. in 33rd IEEE PVSC 2008. San Diego, CA: IEEE. Young, D.L.,...

  11. Yannick J. Bomble, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Lignin Utilization (Collaborator) Areas of Expertise Molecular dynamics Quantum chemistry Computational modeling Computer software development (for applications in molecular ...

  12. NREL: Biomass Research - Jeffrey G. Linger, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    H3 Drives Chromatin Assembly after Repair and Signals for the Completion of Repair." ... is Essential for the Recruitment of the General Transcription Machinery and Coactivators." ...

  13. NREL: Biomass Research - Glen Ferguson, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    These studies were in close collaboration with Professor Yves Chabal of the University of Texas at Dallas. At Indiana University he received several merit-based scholarships, ...

  14. Energy Department Seeks Recent Ph.D. Recipients for Postdoctoral...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Research topics include applying behavioral science insights to solar energy deployment, using big data to solve solar's biggest challenges, and innovative material sciences ...

  15. NREL: Photovoltaics Research - Timothy J. Silverman, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Stabilization of CdTe PV Modules Using Bias and Light." IEEE Journal of Photovoltaics, 5 (1): 344-49. Golden, CO: National Renewable Energy Laboratory, NREL...

  16. NREL: Photovoltaics Research - Aaron Ptak, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Aaron.Ptak@nrel.gov Dr. Ptak is a Senior Scientist in the National Center for Photovoltaics. He received his doctorate from West Virginia University where he worked on growth...

  17. NREL: Photovoltaics Research - Ingrid Repins, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    "19.9%-efficient ZnOCdSCuInGaSe2 solar cell with 81.2% fill factor." Progress in Photovoltaics, 16 (3). http:dx.doi.org10.1002pip.822. Repins, I.L., Beall, C., Vora, N.,...

  18. NREL: Photovoltaics Research - Darius Kuciauskas, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    NREL Publications View NREL publications for this staff member. Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  19. NREL: Photovoltaics Research - Chris Deline, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    of Mismatched PV Systems with Submodule Integrated Converters." IEEE Journal of Photovoltaics. Vol. 4(1), January 2014; pp. 396-404; Golden, CO: National Renewable Energy...

  20. NREL: Photovoltaics Research - Mike Kempe, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    "Modeling Moisture Ingress Through Polyisobutylene-Based Edge-Seals." Progress in Photovoltaics: Research and Applications, DOI 10.1002pip.2465. Arrelaine A. Dameron, M.D....

  1. NREL: Photovoltaics Research - Glenn Teeter, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    supervised by Thomas Orlando and Bruce Kay, before joining the National Center for Photovoltaics at NREL in 2002. Dr. Teeter's research interests include studies of surfaces and...

  2. NREL: Photovoltaics Research - Craig L. Perkins, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    are the physics and chemistry of multinary compound surfaces as they relate to photovoltaics, energy, and environmental sciences, including: electronic structure hybrid...

  3. NREL: Photovoltaics Research - Dirk Jordan, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    NREL Publications View NREL publications for this staff member. Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  4. NREL: Photovoltaics Research - Michael Deceglie, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    near junction defects in silicon heterojunction solar cells," IEEE Journal of Photovoltaics, 4, pp. 154-159, 2014. T.J. Silverman, M.G. Deceglie, B. Marion, S. Cowley, B....

  5. NREL: Photovoltaics Research - Sara MacAlpine, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    at the 39th IEEE Photovoltaic Specialists Conference (PVSC). Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  6. Richard J. French, Ph.D. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Richard.French@nrel.gov | 303-384-6135 Research Interests Biomass thermal processing Hydrotreating Catalytic pyrolysis Steam reforming to hydrogen Gasification Bench-scale reactors ...

  7. NREL: Photovoltaics Research - John Simon, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    interests include development of low-cost III-V solar cells, high-efficiency multi-junction solar cells, III-V semiconductor epitaxy, and development of novel semiconductor...

  8. NREL: Photovoltaics Research - Andriy Zakutayev, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Janet Tate) working on wide-bandgap p-type semiconductors. His postdoctoral advisor at NREL was David Ginley. Zakutayev is originally from Ukraine where he received his bachelor of ...

  9. NREL: Photovoltaics Research - Peter Hacke, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    modeling of degradation processes of PV modules, module integrated electronicssmall inverters, relating accelerated test results to field tests, and developing new methods for...

  10. PH/sub 3/ treatment for polymer stabilization

    DOE Patents [OSTI]

    Not Available

    1982-07-20

    Polymers are stabilized against oxidative degradation by treatment with phosphine gas. The treatment can be used in situ on polymeric components already in use.

  11. W. Alexander Williams, Ph.D Designation and Certification Manager

    Office of Legacy Management (LM)

    ... Quality Assurance Manual, Revision 6 (July 1993) The procedures contained in these manuals were developed to meet the requirements of DOE Order 5700.6C and ASME NQA-1 for Quality ...

  12. NREL: Photovoltaics Research - Lorelle Mansfield, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Early in her graduate career, she fabricated and tested CdTe thin-film solar cells at CSM. Her final dissertation project was conducted at the National Institute of Standards and ...

  13. NREL: Biomass Research - Shihui (Shane) Yang, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... Y.; Brown, S.D. (2013). "Clostridium thermocellum transcriptomic profiles after exposure ... in Clostridium thermocellum using pyro-resequencing for metabolic engineering." ...

  14. NREL: Photovoltaics Research - David Miller, Ph.D.

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Miller has a background in mechanical engineering with emphasis on materials science. He earned a bachelor's degree from the University of Minnesota and master's degree and ...

  15. From Neighborhoods to Nationwide | Department of Energy

    Energy.gov (indexed) [DOE]

    From Neighborhoods to Nationwide: Residential Energy Efficiency Upgrades, ASE Congressional briefing presentation by Danielle Sass Byrnett, supervisor, Better Buildings ...

  16. 2006 News | Concentrating Solar Power | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    6 News Below are news stories related to Concentrating Solar Power. RSS Learn about RSS. December 6, 2006 CSP's Promise in Colorado Colorado's San Luis Valley picked as potential spot for concentrating solar power project. July 21, 2006 NREL Solar Researcher Honored with ASES Abbot Award The American Solar Energy Society (ASES) honored Dr. Chuck Kutscher with the Charles Greeley Abbot Award during the recent ASES SOLAR 2006 conference. April 1, 2006 Economic, Energy, and Environmental Benefits

  17. Wind Resource Estimation and Mapping at the National Renewable...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Resource Estimation and Mapping at the National Renewable Energy Laboratory April 1999 * NRELCP-500-26245 M. Schwartz Presented at the ASES Solar '99 Conference Portland, Maine...

  18. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    changes (1) crystal structure (1) diseases (1) functionals (1) gtp-ases (1) hormones (1) materials science (1) proteins (1) regulations (1) spectroscopy (1)...

  19. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    (2) crystallography (2) diseases (2) gtp-ases (2) hormones (2) morphine (2) particle accelerators (2) receptors (2) Filter by Author Weis, William I. (39) Kobilka, Brian K. ...

  20. Cloning and sequence of the human adrenodoxin reductase gene...

    Office of Scientific and Technical Information (OSTI)

    Subject: 59 BASIC BIOLOGICAL SCIENCES; GENES; DNA SEQUENCING; OXIDOREDUCTASES; AMINO ACID SEQUENCE; ATP; DNA-CLONING; MAN; RNA-ASE; SULFUR 35; TRANSCRIPTION; ANIMALS; BETA DECAY ...

  1. American Solar Energy Society | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    American Solar Energy Society Name: American Solar Energy Society Address: 2400 Central Ave Place: Boulder, Colorado Zip: 80301 Region: Rockies Area Website: www.ases.org...

  2. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    atoms (1) atp-ase (1) augmentation (1) bacteria (1) biotechnology (1) catalysis (1) ... on the organization of many genomes in bacteria and eukaryotes, and their potential ...

  3. Mechanism of homologous recombination from the RecA-ssDNA/dsDNA...

    Office of Scientific and Technical Information (OSTI)

    Sponsoring Org: USDOE Country of Publication: United States Language: ENGLISH Subject: 60 APPLIED LIFE SCIENCES; ATP-ASE; ATP; CRYSTAL STRUCTURE; DNA; ESCHERICHIA COLI; FILAMENTS; ...

  4. MEMORANDUM FOR: JOHN CONTI ASSISTANT ADMINISTRATOR FOR ENERGY

    Annual Energy Outlook

    University) Jeff Harris (ASE) Xiaojing Sun (Georgia Tech) Marilyn Brown (Georgia Tech) ... Roderick Jackson (ORNL) Isha Sharma (Energy and Resources Institute) Buildings Team ...

  5. Workshop on Condensing Heating and Water Heating Equipment

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Institute - Neil Leslie Washington Gas Light - Melissa Adams - Kevin Dunn ACEEE - Harvey Sachs ASAP - Andrew deLaski ASE - Rodney Sobin NRDC - Elizabeth Noll AHRI - Frank ...

  6. Chlorite Dissolution Rates From 25 to 275 degrees and pH 3 to 10

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Carroll, Susan

    We have calculated a chlorite dissolution rate equation at far from equilibrium conditions by combining new data (20 experiments at high temperature) with previously published data Smith et al. 2013 and Lowson et al. 2007. All rate data (from the 127 experiments) are tabulated in this data submission. More information on the calculation of the rate data can be found in our FY13 Annual support (Carroll LLNL, 2013) which has been submitted to the GDR. The rate equation fills a data gap in geothemal kinetic data base and can be used directly to estimate the impact of chemical alteration on all geothermal processes. It is especially important for understanding the role of chemical alteration in the weakening for shear zones in EGS systems.

  7. A Literature Survey Kathleen C. Pugh, Ph.D. Waste Management...

    Office of Scientific and Technical Information (OSTI)

    ... above-mentioned compounds for growth, photosynthesis, and nitrogenase activity ... Atrazine 0.1-0.5 0.03-5.0 55 +- 15 Photosynthesis Growth Acetylene Reductionb CIAT ...

  8. arXiv:hep-ph/0403167v2 8 Apr 2004

    Office of Scientific and Technical Information (OSTI)

    ... Neutrinoless double -decay: T1 2 ( 76 Ge) (3.2 0.2) 10 25 yr Total mass ? 0.46,9.56 (0.48,9.58) IV Neutrinoless double -decay: T1 2 ( 76 Ge) (1. 0.1) 10 ...

  9. Karren L. More, Ph.D. Leader, Microscopy Group Oak Ridge National...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Cameca Instruments Local Electrode Atom Probe (LEAP 4000X HR) Current Research Activities: Atomic level 3D microstructural characterization of solute distributions in a wide...

  10. Karren L. More, Ph.D. Leader, Microscopy Group Oak Ridge National...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Hitachi HF-3300 TEM-STEM Current Research Activities: * Catalyst nanoparticle imaging and analysis * Carbon nanotubenanohorn characterization * Li-ion battery research and in-situ...

  11. Chlorite Dissolution Rates From 25 to 275 degrees and pH 3 to 10

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Carroll, Susan

    2013-09-27

    We have calculated a chlorite dissolution rate equation at far from equilibrium conditions by combining new data (20 experiments at high temperature) with previously published data Smith et al. 2013 and Lowson et al. 2007. All rate data (from the 127 experiments) are tabulated in this data submission. More information on the calculation of the rate data can be found in our FY13 Annual support (Carroll LLNL, 2013) which has been submitted to the GDR. The rate equation fills a data gap in geothemal kinetic data base and can be used directly to estimate the impact of chemical alteration on all geothermal processes. It is especially important for understanding the role of chemical alteration in the weakening for shear zones in EGS systems.

  12. Dr. David Snyder, Ph.D. Archaeology Reviews Manager Ohio Historic...

    Energy.gov (indexed) [DOE]

    Kentucky 40513 (859) 219-4000 OCT 1 1 2011 PPPO-03-1265954-11 SUBMITTAL OF A REPORT REGARDING PREHISTORIC NATIVE AMERICAN EARTHWORKS AND MOUND SITES IN THE AREA OF THE ...

  13. Paul J. Merges, PhD Director, Bureau of Radiation New York State...

    Office of Legacy Management (LM)

    Programs Office of Eastern Area Programs Office of Environmental Restoration , , . - . ?. -- . 112487' 111987 ' 111287 72552 81551 1949 .1948 " 4345 2l45 l1...

  14. Zhong Wang, Ph.D. Group Lead, Genome Analysis National Microbiome...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Shotgun Sequencing Metagenome Assembly Assembled Genomes Billions of pieces Terabytes in size "Big Data" Library of Books Shredded Library "reconstructed" Library Genome Book ...

  15. arXiv:hep-ph/0111471 v2 4 Dec 2001

    Office of Scientific and Technical Information (OSTI)

    I. INTRODUCTION All known solutions to the gauge hierarchy ... rate of events with missing energy due to graviton emission. ... This has been computed in 5 using a simple string toy ...

  16. A Literature Survey Kathleen C. Pugh, Ph.D. Waste Management...

    Office of Scientific and Technical Information (OSTI)

    ......... 14 Fish Toxicity ......to a National Toxicology Program report.12 Fish Toxicity An investigation of acute and ...

  17. T.M. Bull Bennett, PhD | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    T. M. Bull Bennett (Mi'kmaq), was born in Brunswick, ME, and grew up in the mountains and prairies of Wyoming. As an undergraduate he studied field ecology earning a BS in Biology ...

  18. Ph.D. in Hand, Postdocs Explore Their Futures - News Feature...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Yang: I am from China, originally. I grew up in Xi'an, Shaanxi Province, and went to Tsinghua University in Beijing for college. After I received my bachelor's degree in electrical ...

  19. Microfluidic device having an immobilized pH gradient and page...

    Office of Scientific and Technical Information (OSTI)

    Assignee: Sandia Corporation (Albuquerque, NM) SNL Patent Number(s): 8,728,290 Application Number: 13667,254 Contract Number: AC04-94AL85000 Research Org: SNL (Sandia National ...

  20. ORISE: After a Brief Decline, Recent Foreign Ph.D. Graduates...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Citizens of some countries were more likely to stay than others. Seven countries-China, Romania, Yugoslavia, Ukraine, India, Iran, and Russia-have five-year stay rates greater than ...

  1. Catalytic Mechanism and Unique Low pH Optimum of Caldicellulosiruptor...

    Office of Scientific and Technical Information (OSTI)

    obtain a copy of this journal article from the publisher. Find in Google Scholar Find in Google Scholar Search WorldCat Search WorldCat to find libraries that may hold this journal

  2. Materials Data on PH3O4 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  3. Materials Data on CaPH3O4 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  4. Materials Data on SrPH3O4 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  5. Materials Data on PH10N2O4F (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  6. Materials Data on LiPH2O3 (SG:33) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  7. Materials Data on LiZnPH2O5 (SG:33) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  8. Materials Data on KMnPH2O5 (SG:31) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  9. Materials Data on PH6NO4 (SG:122) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  10. Materials Data on PH8N2O3F (SG:33) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  11. Materials Data on PH6NO4 (SG:19) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  12. Materials Data on PH5NO3F (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  13. Materials Data on PH9C3Br3N (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  14. Materials Data on PH4Br (SG:129) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  15. Materials Data on Zn2PH2CO7 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  16. Materials Data on PH4I (SG:129) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  17. Materials Data on BePH4NO4 (SG:33) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  18. Materials Data on MnPH2O5 (SG:15) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  19. Walter L. Warnick, Ph.D., Former Director | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    WorldWideScience.org is the online gateway to science information issued from nations around the world. ... boundaries to improve the Government's service to its people. Dr. ...

  20. arXiv:hep-ph/0212228v2 21 Nov 2003

    Office of Scientific and Technical Information (OSTI)

    ... space.) Partial decay widths in these channels are easily computed using the Feynman rules in Fig. 1: (W 3 H ) g 2 cot 2 96 M, (W 3 H qq) ...

  1. Thomas D. Foust, Ph.D, P.E. | Bioenergy | NREL

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Fuels optimization for high-efficiency engines Biomass sustainability and land use issues Affiliated Research Programs United Nations Bioenergy and Sustainability Assessment ...

  2. Recent Ph.D. Recipients Sought for Innovative Research in Solar...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    doctoral grads propose cutting-edge research in solar energy and join teams at universities or the national labslike this one, which is investigating solar cell materials. ...

  3. Walter L. Warnick, Ph.D., Former Director | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    results recorded in digital documents remain digital throughout their entire life cycle. ... Warnick received both the Department of Energy Information Technology Quality Award for ...

  4. Karren L. More, Ph.D. Leader, Microscopy Group Oak Ridge National...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Titan S Aberration-corrected TEM-STEM TechniquesCapabilities: * extreme Schottky-field emission gun (X-FEG) * CEOS dodecapole probe (STEM) aberration corrector * GIF Quantum with ...

  5. Karren L. More, Ph.D. Leader, Microscopy Group Oak Ridge National...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    with single atom sensitivity Instrument Specifications: * Cold field emission gun * 3 rd generation C 3 C 5 aberration corrector * 60-100kV operation * <1 spatial ...

  6. GMR-based PhC biosensor: FOM analysis and experimental studies

    SciTech Connect (OSTI)

    Syamprasad, Jagadeesh; Narayanan, Roshni; Joseph, Joby; Takahashi, Hiroki; Sandhu, Adarsh; Jindal, Rajeev

    2014-02-20

    Guided Mode Resonance based Photonic crystal biosensor has a lot of potential applications. In our work, we are trying to improve their figure of merit values in order to achieve an optimum level through design and fabrication techniques. A robust and low-cost alternative for current biosensors is also explored through this research.

  7. Aqueous biphasic plutonium oxide extraction process with pH and particle control

    DOE Patents [OSTI]

    Chaiko, D.J.; Mensah-Biney, R.

    1997-04-29

    A method is described for simultaneously partitioning a metal oxide and silica from a material containing silica and the metal oxide, using a biphasic aqueous medium having immiscible salt and polymer phases. 2 figs.

  8. Aqueous biphasic plutonium oxide extraction process with pH and particle control

    DOE Patents [OSTI]

    Chaiko, David J.; Mensah-Biney, R.

    1997-01-01

    A method for simultaneously partitioning a metal oxide and silica from a material containing silica and the metal oxide, using a biphasic aqueous medium having immiscible salt and polymer phases.

  9. Variation in hydraulic conductivity with decreasing pH in abiological...

    Office of Scientific and Technical Information (OSTI)

    APA Chicago Bibtex Export Metadata Endnote Excel CSV XML Save to My Library Send to Email Send to Email Email address: Content: Close Send Cite: MLA Format Close Cite: APA ...

  10. Best Practices Case Study: Shaw Construction Burlingame Ranch Ph.1, Aspen, CO

    SciTech Connect (OSTI)

    Pacific Northwest National Laboratory & Oak Ridge National Laboratory

    2010-12-01

    Shaw Construction built 84 energy efficient, affordable condominiums forthe City of Aspen that achieved HERS scores of less than 62 with help from Building America’s research team lead Building Science Corporation.

  11. Computational method for thermoviscoelasticity with application to rock mechanics. [Ph. D. Thesis

    SciTech Connect (OSTI)

    Lee, S.C.

    1984-01-01

    Large-scale numerical computations associated with rock mechanics problems have required efficient and economical models for predicting temperature, stress, failure, and deformed structural configuration under various loading conditions. To meet this requirement, the complex dependence of the properties of geological materials on the time and temperature is modified to yield a reduced time scale as a function of time and temperature under the thermorheologically simple material (TSM) postulate. The thermorheologically linear concept is adopted in the finite element formulation by uncoupling thermal and mechanical responses. The thermal responses, based on transient heat conduction or convective-diffusion, are formulated by using the two-point recurrence scheme and the upwinding scheme, respectively. An incremental solution procedure with the implicit time stepping scheme is proposed for the solution of the thermoviscoelastic response. The proposed thermoviscoelastic solution algorithm is based on the uniaxial creep experimental data and the corresponding temperature shift functions, and is intended to minimize computational efforts by allowing large time step size with stable solutions. A thermoelastic fracture formulation is also presented by introducing the degenerate quadratic isoparametric singular element for the thermally-induced line crack problems. The stress intensity factors are computed by use of the displacement method. Efficiency of the presented formulation and solution algorithm is initially demonstrated by comparison with other available solutions for a variety of problems. Subsequent field applications are made to simulate the post-burn and post-repose phases of an underground coal conversion (UCC) experiment and in-situ nuclear waste disposal management problems. 137 references, 48 figures, 6 tables.

  12. Influence of acidic pH on hydrogen and acetate production by...

    Office of Scientific and Technical Information (OSTI)

    mV (0.065 mAcm2 sterile control at -800 mV) by the Acetobacterium-dominated community. ... Dept. of Ecology and Evolution; Marine Biological Lab., Woods Hole, MA (United States); ...

  13. Influence of Oxygen and pH on the Selective Oxidation of Ethanol on Pd Catalysts

    SciTech Connect (OSTI)

    Hibbitts, David D.; Neurock, Matthew

    2013-03-01

    The selective oxidation of ethanol on supported Pd is catalytically promoted by the presence of hydroxide species on the Pd surface as well as in solution. These hydroxide intermediates act as Brønsted bases which readily abstract protons from the hydroxyl groups of adsorbed or solution-phase alcohols. The C1AH bond of the resulting alkoxide is subsequently activated on the metal surface via hydride elimination to form acetaldehyde. Surface and solution-phase hydroxide intermediates can also readily react with the acetaldehyde via nucleophilic addition to form a germinal diol intermediate, which subsequently undergoes a second C1AH bond activation on Pd to form acetic acid. The role of O2 is to remove the electrons produced in the oxidation reaction via the oxygen reduction reaction over Pd. The reduction reaction also regenerates the hydroxide intermediates and removes adsorbed hydrogen that is produced during the oxidation.

  14. arXiv:astro-ph/0110352 v1 15 Oct 2001

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... Las Alamos Na- tional Laboratory Report LA-UR-90-3534, (1990). 28. W. Shen and S.C. Prager. The Fluctuation-Induced HallEffect. Phys. Fluids B, vol. 5 (1993), pp.1931-1933. 29. ...

  15. CASL-8-2015-0137-000 Jess C. Gehin, PhD Director, Consortium...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Consortium for the Advanced Simulation of Light ... MC2015 - Joint International Conference on Mathematics and Computation ... 2014 Electric Power Research Institute, Inc. ...

  16. PH adjustment of power plant cooling water with flue gas/fly...

    Office of Scientific and Technical Information (OSTI)

    Krumhansl, James L. A system including a vessel including a heat source and a flue; a turbine; a condenser; a fluid conduit circuit disposed between the vessel, the turbine and...

  17. Influence of pH on the quantum-size-controlled photoelectrochemical...

    Office of Scientific and Technical Information (OSTI)

    Here, we investigate and elucidate the influence of solution ... Journal Volume: 119; Journal Issue: 50; Journal ID: ISSN 1932-7447 Publisher: American Chemical Society Research Org: ...

  18. Karen G. Wayland, Ph.D. Deputy Director, State, Local and Tribal...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    energy results. Today, the company is active on several newer fronts including electric vehicles, universal solar, ... Simply put, electricity is the most empowering invention of ...

  19. Ronald D. Ripple, PhD Mervin Bovaird Professor of Energy Business and Finance

    Gasoline and Diesel Fuel Update

    Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1990's NA 2000's NA NA NA 8,986 39,588 40,466 60,432 54,660 49,073 56,035 2010's 62,914 74,790 75,026 78,196 76,154 81,837

    Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 2010's 0 8,045 310,965

    Electricity: 30 Years of Electricity: 30 Years of Industry Change Industry Change David K. Owens Executive Vice President Edison Electric Institute 30 Years of Energy Information and

  20. George Taylor, Ph.D. Founder, Palmetto Energy Institute Senior Fellow, ATI Center for Energy Studies

    Gasoline and Diesel Fuel Update

    225 501 314 1,046 1,426 933 2007-2015 Pipeline Prices 3.52 3.12 1.87 2.66 3.45 1.71 2007 Thousand Cubic Feet)

    Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 2000's -- -- 2.69 2010's 3.52 3.12 1.87 2.66 3.45 1.71

    Thousand Cubic Feet)

    Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2011 3.27 3.34 2.85 3.28 3.41 3.38 3.44 3.42 2.94 2.82 2.55 2.41 2012 2.17 1.80 1.56 1.27 1.15 1.52 1.86 2.09 1.76 2.09 2.80 2.76 2013 2.42 2.34 2.53 2.53 3.21 3.21

  1. Influence of oxygen and pH on the selective oxidation of ethanol...

    Office of Scientific and Technical Information (OSTI)

    Resource Relation: Journal Name: Journal of Catalysis; Journal Volume: 299; Journal Issue: C Publisher: Elsevier Research Org: Pacific Northwest National Laboratory (PNNL), ...

  2. Emission switching in carbon dots coated CdTe quantum dots driving by pH dependent hetero-interactions

    SciTech Connect (OSTI)

    Dai, Xiao; Wang, Hao; Yi, Qinghua; Wang, Yun; Cong, Shan; Zhao, Jie; Sun, Yinghui; Zou, Guifu E-mail: jiexiong@uestc.edu.cn; Qian, Zhicheng; Huang, Jianwen; Xiong, Jie E-mail: jiexiong@uestc.edu.cn; Luo, Hongmei

    2015-11-16

    Due to the different emission mechanism between fluorescent carbon dots and semiconductor quantum dots (QDs), it is of interest to explore the potential emission in hetero-structured carbon dots/semiconducting QDs. Herein, we design carbon dots coated CdTe QDs (CDQDs) and investigate their inherent emission. We demonstrate switchable emission for the hetero-interactions of the CDQDs. Optical analyses indicate electron transfer between the carbon dots and the CdTe QDs. A heterojunction electron process is proposed as the driving mechanism based on N atom protonation of the carbon dots. This work advances our understanding of the interaction mechanism of the heterostructured CDQDs and benefits the future development of optoelectronic nanodevices with new functionalities.

  3. Microstructure evolution in the fusion welding of heat-treatable Al-Cu-Li alloys. Ph.D. Thesis

    SciTech Connect (OSTI)

    Hou, K.

    1994-01-01

    Aluminum alloys 2090 and 2195 and Al-2.5Cu were welded autogenously using the gas tungsten-arc (GTA) and CO2 laser beam (LB) welding processes. Relationships between microstructure and mechanical properties in the fusion zone (FZ) and the heat-affected zone (HAZ) in both the as-welded and the postweld heat-treated conditions were studied. Solute segregation due to non-equilibrium solidification in the FZ and its effect on precipitation after postweld aging was quantitatively investigated. After aging treatment, precipitates were found surrounding eutectic regions where higher solute content was measured. Fast cooling LB weld exhibited narrower solute enriched regions and narrower precipitate segregation zones (PSZ`s) adjacent to the eutectic. A partial recovery of strength and hardness in the FZ`s was achieved by postweld aging at 160 C and 190 C for 16 hours. A higher Li/Cu ratio in 2090 promoted the formation of uniformly distributed delta(prime) precipitates in the as-welded HAZ. An evident reduction in the FZ ductility occurred in the 2195 LB welds due to the existence of porosity and shrinkage cavities, and the constraint effect from narrower FZ`s. GTA welds in both 2090 and 2195 alloys exhibited a hardness recovery in the near HAZ, which was not obvious in the LB welds. Postweld aging enhanced this hardness variation. Overaging, dissolution and reprecipitation of various strengthening precipitates occurred in the different regions of the HAZ, and consequently induced the hardness variation. Higher heat inputs increased the HAZ width and enhanced the hardness increase in the near HAZ. Aged HAZ microstructure was affected by the precipitation in the as-welded condition. The formation of Li-containing precipitates in the GTA HAZ, especially alpha(prime) in Li-lean 2195, consumed Li from the matrix. Consequently, the precipitation of T1 was affected.

  4. E&nr Ph. S. W.. Wahhgt~n. D.C. 200242174, TIkpbnc (202) 48a60uo

    Office of Legacy Management (LM)

    ... Operations Office revealed five additional colleges and universities that performed research in support of Hanford's Division of Biology and Medicine and Division of Research. ...

  5. Energy Department Seeks Recent Ph.D. Recipients for Postdoctoral Research Projects to Spur Innovation in Solar Energy

    Energy.gov [DOE]

    In order to further spur innovation in solar energy, the Energy Department’s Office of Energy Efficiency and Renewable Energy (EERE) is now accepting applications for postdoctoral researchers in solar energy to participate in the EERE Postdoctoral Research Awards.

  6. Response of the upper atmosphere to variations in the solar soft x-ray irradiance. Ph.D. Thesis

    SciTech Connect (OSTI)

    Bailey, S.M.

    1995-01-01

    Terrestrial far ultraviolet (FUV) airglow emissions have been suggested as a means for remote sensing the structure of the upper atmosphere. The energy which leads to the excitation of FUV airglow emissions is solar irradiance at extreme ultraviolet (EUV) and soft x-ray wavelengths. Solar irradiance at these wavelengths is known to be highly variable; studies of nitric oxide (NO) in the lower thermosphere have suggested a variability of more than an order of magnitude in the solar soft x-ray irradiance. To properly interpret the FUV airglow, the magnitude of the solar energy deposition must be known. Previous analyses have used the electron impact excited Lyman-Birge-Hopfield (LBH) bands of N2 to infer the flux of photoelectrons in the atmosphere and thus to infer the magnitude of the solar irradiance. This dissertation presents the first simultaneous measurements of the FUV airglow, the major atmospheric constituent densities, and the solar EUV and soft x-ray irradiances. The measurements were made on three flights of an identical sounding rocket payload at different levels of solar activity. The linear response in brightness of the LBH bands to variations in solar irradiance is demonstrated. In addition to the N2 LBH bands, atomic oxygen lines at 135.6 and 130.4 nm are also studied. Unlike the LBH bands, these emissions undergo radiative transfer effects in the atmosphere. The OI emission at 135.6 nm is found to be well modeled using a radiative transfer calculation and the known excitation processes. Unfortunately, the assumed processes leading to OI 130.4 nm excitation are found to be insufficient to reproduce the observed variability of this emission. Production of NO in the atmosphere is examined; it is shown that a lower than previously reported variability in the solar soft x-ray irradiance is required to explain the variability of NO.

  7. Materials Data on TaSi2PH18C6(NCl3)2 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  8. Human radiation studies: Remembering the early years. Oral history of biophysicist Cornelius A. Tobias, Ph.D., January 16, 1995

    SciTech Connect (OSTI)

    1995-07-01

    Dr. Cornelius A. Tobias was interviewed by representatives of US DOE Office of Human Radiation Experiments (OHRE). He was chosen for this interview because of his extensive biophysics and medical physics research activities while he was employed by the University of California, Berkeley and San Francisco and at the Donner Laboratory. He discusses his involvement in wartime studies of effects of high altitude on aviators, carbon monoxide with radioactive tracers, blood studies with radioactive iron, human use committees, heavy-ion research with the Bevatron, boron isotope research, classified research involving human subjects, heavy-particle radiography, heavy- particle beams and medical research, and pituitary irradiation studies,.

  9. The Flexible Solar Utility: Preparing for Solar's Impacts to...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    purchased resources Natural gas (NG ) pipeline expansion limits and NG fracking environmental restrictions Utility Business Models Evolved business models...

  10. Reciprocating Engines in Support of Grid Modernization

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Imagination at work. Herman Wiegman PhD GE Global Research Feb 10, 2016 Reciprocating Engines in Support of Grid Modernization DOE-AMO Workshop Austin, TX Feb 2016 © 2015 General Electric Company - All rights reserved 2 Natural Gas Reciprocating Engines Lean Burn Rich Burn GE (Waukesha, Jenbacher), Caterpillar, Cummins, Cooper, Superior, .... Eff ~38%, NOx <1g/hp-hr , CHP compatible www.eren.doe.gov/deer.html Navigant - 27 GW of NG-Generators installed by 2024 © 2015 General Electric

  11. CSP Program Summit 2016

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    High-Opera+ng-Temperature Heat-Transfer Fluids for Solar Thermal Power Genera+on (Liquid Metals) Alan Bolind, Ph.D. Assistant Project ScienFst University of California, Berkeley Principal InvesFgators: Mark Asta (UC Berkeley) Y. Sungtaek Ju (UCLA) Peter Hosemann (UC Berkeley) Jan Schroers (Yale) energy.gov/sunshot energy.gov/sunshot CSP Program Summit 2016 2 Outline § Overview § Problem Statement § Value ProposiFon § ObjecFves § Milestones § Results § Path to Market energy.gov/sunshot

  12. Submitting Organization Sandia National Laboratories

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Sean A. McKenna, PhD Distinguished Member of the Technical Staff P.O. Box 5800 MS 0751 Albuquerque, NM 87185-0185 Phone (505) 844-2450 Fax (505) 844-7354 samcken@sandia.gov Contact Person Glenn D. Kubiak Director, Biological and Materials Sciences Center Sandia National Laboratories PO Box 969 MS 9405 Livermore, CA 94551-0969 USA Phone (925) 294-3375 Fax (925) 294-3403 kubiak@sandia.gov Joint Entry with U. S. Environmental Protection Agency 26 W Martin Luther King Dr. (NG 16) Cincinnati, Ohio

  13. NREL'S Carlisle Earns Solar Service Award

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    As a team manager of Technical Assistance for the Federal Energy Management Program (FEMP)... Carlisle also increases awareness of solar energy through ASES as a leader of the FEMP ...

  14. ASCR2017Final

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... It also incorporates effective exploitation of hardware parallelism hierarchy. Inverse ... a t e ach m esh c ell, a nd i s b ased o n the Distorted Wave Born Approximation theory. ...

  15. Excitation dependent two-component spontaneous emission and ultrafast amplified spontaneous emission in dislocation-free InGaN nanowires

    SciTech Connect (OSTI)

    You, Guanjun; Zhang, Chunfeng; Xu, Jian; Guo, Wei; Bhattacharya, Pallab; Henderson, Ron

    2013-03-04

    Amplified spontaneous emission (ASE) at 456 nm from In{sub 0.2}Ga{sub 0.8}N nanowires grown on (001) silicon by catalyst-free molecular beam epitaxy was observed at room temperature under femtosecond excitation. The photoluminescence spectra below ASE threshold consist of two spontaneous emission bands centered at {approx}555 nm and {approx}480 nm, respectively, revealing the co-existence of deeply and shallowly localized exciton states in the nanowires. The ASE peak emerges from the 480 nm spontaneous emission band when the excitation density exceeds {approx}120 {mu}J/cm{sup 2}, indicating that optical gain arises from the radiative recombination of shallowly localized excitons in the nanowires. Time-resolved photoluminescence measurements revealed that the ASE process completes within 1.5 ps, suggesting a remarkably high stimulated emission recombination rate in one-dimensional InGaN nanowires.

  16. San Diego, California: Energy Resources | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Sapphire Energy Corp SeaWest WindPower Inc SolASE Solarese Solarium Energy Spinnaker Energy Inc Sun Solar Sunlight Direct Tecate Group Trex Enterprises US Farms Inc Verenium...

  17. Assessment of Selected Energy Efficiency Policies

    Reports and Publications

    2005-01-01

    This report responds to a request from Senator Byron L. Dorgan, asking the Energy Information Administration (EIA) to undertake a quantitative analysis of a variety of energy efficiency policies using assumptions provided by the Alliance to Save Energy (ASE).

  18. Recusal Statement of The Secretary of Energy 2013

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    substantially in any particular matter that has a direct and predictable effect on the financial interests of American Science & Engineering, Inc. (AS&E) unless I first obtain a ...

  19. Combining Balancing Areas' Variability: Impacts on Wind Integration in the Western Interconnection

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    9 July 2010 Combining Balancing Areas' Variability: Impacts on Wind Integration in the Western Interconnection Michael Milligan and Brendan Kirby National Renewable Energy Laboratory Stephen Beuning Xcel Energy Presented at WindPower 2010 Dallas, Texas May 23-26, 2010 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (ASE), a contractor of the US Government under Contract No. DE-AC36-08-GO28308. Accordingly, the US Government and ASE

  20. News Item

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Spectroscopic elucidation of energy transfer in hybrid inorganic-biological organisms Two-pathway mechanism: (1) a high quantum efficiency charge-transfer pathway to H2ase generating H2 and (2) a non-H2ase mediated direct energy-transducing enzymatic pathway. Scientific Achievement Two pathways facilitate electron and light energy transfer from semiconductor to bacterium as concluded using time-resolved spectroscopy and biochemical analysis. Significance and Impact This work represents a

  1. Gain media edge treatment to suppress amplified spontaneous emission in a high power laser

    DOE Patents [OSTI]

    Hackel, Lloyd A.; Soules, Thomas F.; Fochs, Scott N.; Rotter, Mark D.; Letts, Stephan A.

    2008-12-09

    A novel method and apparatus for suppressing ASE and parasitic oscillation modes in a high average power laser is introduced. By roughening one or more peripheral edges of a solid-state crystal or ceramic laser gain media and by bonding such edges using a substantially high index bonding elastomer or epoxy to a predetermined electromagnetic absorbing arranged adjacent to the entire outer surface of the peripheral edges of the roughened laser gain media, ASE and parasitic oscillation modes can be effectively suppressed.

  2. Gain media edge treatment to suppress amplified spontaneous emission in a high power laser

    DOE Patents [OSTI]

    Hackel, Lloyd A.; Soules, Thomas F.; Fochs, Scott N.; Rotter, Mark D.; Letts, Stephan A.

    2011-02-22

    A novel method and apparatus for suppressing ASE and/or parasitic oscillation modes in a laser is introduced. By roughening one or more peripheral edges of a solid-state crystal or ceramic laser gain media and by bonding such edges to a predetermined electromagnetic absorbing material arranged adjacent to the entire outer surface of the peripheral edges of the roughened laser gain media, ASE, parasitic oscillation modes and/or residual pump energy can be effectively suppressed.

  3. Mod II Stirling engine overviews

    SciTech Connect (OSTI)

    Farrell, R.A.

    1988-01-01

    The Mod II engine is a second-generation automotive Stirling engine (ASE) optimized for part-power operation. It has been designed specifically to meet the fuel economy and exhaust emissions objectives of the ASE development program. The design, test experience, performance, and comparison of data to analytical performance estimates of the Mod II engine to date are reviewed. Estimates of Mod II performance in its final configuration are also given. 12 references.

  4. Grating enhanced solid-state laser amplifiers

    DOE Patents [OSTI]

    Erlandson, Alvin C.; Britten, Jerald A.

    2010-11-09

    A novel method and apparatus for suppressing ASE and parasitic oscillation modes in a high average power laser is introduced. Such an invention, as disclosed herein, uses diffraction gratings to increase gain, stored energy density, and pumping efficiency of solid-state laser gain media, such as, but not limited to rods, disks and slabs. By coupling predetermined gratings to solid-state gain media, such as crystal or ceramic laser gain media, ASE and parasitic oscillation modes can be effectively suppressed.

  5. Plug-in Electric Vehicle Infrastructure: A Foundation for Electrified Transportation: Preprint

    Alternative Fuels and Advanced Vehicles Data Center

    951 April 2010 Plug-in Electric Vehicle Infrastructure: A Foundation for Electrified Transportation Preprint T. Markel To be presented at the MIT Energy Initiative Transportation Electrification Symposium Cambridge, Massachusetts April 8, 2010 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (ASE), a contractor of the US Government under Contract No. DE-AC36-08-GO28308. Accordingly, the US Government and ASE retain a nonexclusive

  6. Technology Improvement Pathway to Cost-effective Vehicle Electrification: Preprint

    Alternative Fuels and Advanced Vehicles Data Center

    454 February 2010 Technology Improvement Pathways to Cost-Effective Vehicle Electrification Preprint A. Brooker, M. Thornton, and J. Rugh National Renewable Energy Laboratory To be presented at SAE 2010 World Congress Detroit, Michigan April 13-15, 2010 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (ASE), a contractor of the US Government under Contract No. DE-AC36-08-GO28308. Accordingly, the US Government and ASE retain a

  7. Abnormally Malicious Autonomous Systems and their Internet Connectivity

    SciTech Connect (OSTI)

    Shue, Craig A; Kalafut, Prof. Andrew; Gupta, Prof. Minaxi

    2011-01-01

    While many attacks are distributed across botnets, investigators and network operators have recently targeted malicious networks through high profile autonomous system (AS) de-peerings and network shut-downs. In this paper, we explore whether some ASes indeed are safe havens for malicious activity. We look for ISPs and ASes that exhibit disproportionately high malicious behavior using ten popular blacklists, plus local spam data, and extensive DNS resolutions based on the contents of the blacklists. We find that some ASes have over 80% of their routable IP address space blacklisted. Yet others account for large fractions of blacklisted IP addresses. Several ASes regularly peer with ASes associated with significant malicious activity. We also find that malicious ASes as a whole differ from benign ones in other properties not obviously related to their malicious activities, such as more frequent connectivity changes with their BGP peers. Overall, we conclude that examining malicious activity at AS granularity can unearth networks with lax security or those that harbor cybercrime.

  8. A fluorescence-based method for rapid and direct determination of polybrominated diphenyl ethers in water

    SciTech Connect (OSTI)

    Shan, Huimei; Liu, Chongxuan; Wang, Zheming; Ma, Teng; Shang, Jianying; Pan, Duoqiang

    2015-01-01

    A new method was developed for rapid and direct measurement of polybrominated diphenyl ethers (PBDEs) in aqueous samples using fluorescence spectroscopy. The fluorescence spectra of tri- to deca-BDE (BDE 28, 47, 99, 153, 190, and 209) commonly found in environment were measured at variable emission and excitation wavelengths. The results revealed that the PBDEs have distinct fluorescence spectral profiles and peak positions that can be exploited to identify these species and determine their concentrations in aqueous solutions. The detection limits as determined in deionized water spiked with PBDEs are 1.71-5.82 ng/L for BDE 28, BDE 47, BDE 190, and BDE 209 and 45.5569.95 ng/L for BDE 99 and BDE 153. The effects of environmental variables including pH, humic substance, and groundwater chemical composition on PBDEs measurements were also investigated. These environmental variables affected fluorescence intensity, but their effect can be corrected through linear additivity and separation of spectral signal contribution. Compared with conventional GC-based analytical methods, the fluorescence spectroscopy method is more efficient as it only uses a small amount of samples (2-4 mL), avoids lengthy complicated concentration and extraction steps, and has a low detection limit of a few ng/L.

  9. A fluorescence-based method for rapid and direct determination of polybrominated diphenyl ethers in water

    DOE PAGES-Beta [OSTI]

    Shan, Huimei; Liu, Chongxuan; Wang, Zheming; Ma, Teng; Shang, Jianying; Pan, Duoqiang

    2015-01-01

    A new method was developed for rapid and direct measurement of polybrominated diphenyl ethers (PBDEs) in aqueous samples using fluorescence spectroscopy. The fluorescence spectra of tri- to deca-BDE (BDE 28, 47, 99, 153, 190, and 209) commonly found in environment were measured at variable emission and excitation wavelengths. The results revealed that the PBDEs have distinct fluorescence spectral profiles and peak positions that can be exploited to identify these species and determine their concentrations in aqueous solutions. The detection limits as determined in deionized water spiked with PBDEs are 1.71-5.82 ng/L for BDE 28, BDE 47, BDE 190, and BDEmore » 209 and 45.55–69.95 ng/L for BDE 99 and BDE 153. The effects of environmental variables including pH, humic substance, and groundwater chemical composition on PBDEs measurements were also investigated. These environmental variables affected fluorescence intensity, but their effect can be corrected through linear additivity and separation of spectral signal contribution. Compared with conventional GC-based analytical methods, the fluorescence spectroscopy method is more efficient as it only uses a small amount of samples (2-4 mL), avoids lengthy complicated concentration and extraction steps, and has a low detection limit of a few ng/L.« less

  10. High-pressure behavior of amorphous selenium from ultrasonic measurements and Raman spectroscopy

    SciTech Connect (OSTI)

    He, Z.; Liu, X. R.; Hong, S. M. E-mail: smhong@home.swjtu.edu.cn; Wang, Z. G.; Zhu, H. Y.; Peng, J. P.

    2014-07-07

    The high-pressure behavior of melt-quenched amorphous selenium (a-Se) has been investigated via ultrasonic measurements and Raman scattering at room temperature. The ultrasonic measurements were conducted on a-Se in a multi-anvil apparatus with two different sample assemblies at pressures of up to 4.5 and 4.8 GPa. We discovered that similar kinks occur in the slopes of the pressure dependence characteristics of the travel time and the sound velocity in both shear and longitudinal waves in the 2.0–2.5 GPa range. These kinks are independent of the sample assemblies, indicating an intrinsic transformation of the a-Se. Additionally, we deduced the pressure-volume relationship of a-Se from the sound velocity characteristics using the Birch–Murnaghan equation of state, and the results agreed well with those of previous reports. In situ high-pressure Raman scattering measurements of a-Se were conducted in a diamond anvil cell with an 830 nm excitation line up to a pressure of 4.3 GPa. We found that the characteristic band of a-Se at ∼250 cm{sup −1} experienced a smooth shift to a lower frequency with pressure, but a sharp slope change in the band intensity versus pressure occurred near 2.5 GPa. The results of X-ray diffraction and differential scanning calorimetry measurements indicate that the samples remain in their amorphous states after decompression. Thus, we proposed that the abnormal compression behavior of a-Se in the 2.0–2.5 GPa range can be attributed to pressure-induced local atomic reconfiguration, implying an amorphous-amorphous transition of the elementary selenium.

  11. TU-F-18C-02: Increasing Amorphous Selenium Thickness in Direct Conversion Flat-Panel Imagers for Contrast-Enhanced Dual-Energy Breast Imaging

    SciTech Connect (OSTI)

    Scaduto, DA; Hu, Y-H; Zhao, W

    2014-06-15

    Purpose: Contrast-enhanced (CE) breast imaging using iodinated contrast agents requires imaging with x-ray spectra at energies greater than those used in mammography. Optimizing amorphous selenium (a-Se) flat panel imagers (FPI) for this higher energy range may increase lesion conspicuity. Methods: We compare imaging performance of a conventional FPI with 200 μm a-Se conversion layer to a prototype FPI with 300 μm a-Se layer. Both detectors are evaluated in a Siemens MAMMOMAT Inspiration prototype digital breast tomosynthesis (DBT) system using low-energy (W/Rh 28 kVp) and high-energy (W/Cu 49 kVp) x-ray spectra. Detectability of iodinated lesions in dual-energy images is evaluated using an iodine contrast phantom. Effects of beam obliquity are investigated in projection and reconstructed images using different reconstruction methods. The ideal observer signal-to-noise ratio is used as a figure-of-merit to predict the optimal a-Se thickness for CE lesion detectability without compromising conventional full-field digital mammography (FFDM) and DBT performance. Results: Increasing a-Se thickness from 200 μm to 300 μm preserves imaging performance at typical mammographic energies (e.g. W/Rh 28 kVp), and improves the detective quantum efficiency (DQE) for high energy (W/Cu 49 kVp) by 30%. While the more penetrating high-energy x-ray photons increase geometric blur due to beam obliquity in the FPI with thicker a-Se layer, the effect on lesion detectability in FBP reconstructions is negligible due to the reconstruction filters employed. Ideal observer SNR for CE objects shows improvements in in-plane detectability with increasing a-Se thicknesses, though small lesion detectability begins to degrade in oblique projections for a-Se thickness above 500 μm. Conclusion: Increasing a-Se thickness in direct conversion FPI from 200 μm to 300 μm improves lesion detectability in CE breast imaging with virtually no cost to conventional FFDM and DBT. This work was partially

  12. Thermal stability and photoconductive properties of photosensors with an alternating multilayer structure of amorphous Se and As{sub x}Se{sub 1−x}

    SciTech Connect (OSTI)

    Yu, Tung-Yuan; Pan, Fu-Ming Chang, Cheng-Yi; Lin, Jian-Siang; Huang, Wen-Hsien

    2015-07-28

    In this study, we fabricated a-Se based photosensors with an alternating multilayer structure of a-Se and As{sub x}Se{sub 1−x} by rotational thermal evaporation deposition. During the deposition of the amorphous As{sub x}Se{sub 1−x} layers, As diffuses into the underlying a-Se component layers, thereby improving the thermal stability of the multilayer photosensor and thus increasing the breakdown electric field. Although the As doping introduces carrier traps in the a-Se layers, the multilayer photosensors demonstrate an effective quantum efficiency comparable to the single-layered a-Se sensor under the blue light illumination but are with a lower dark current density by two orders of magnitude. In addition to the top As{sub x}Se{sub 1−x} layer being functioning as an electron blocking layer, carrier traps present in the multilayer structure may decrease the drift mobility of charge carriers and disturb electric field distribution in the photosensors, thereby suppressing the dark current.

  13. 1990.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    376-A 70306.FE 022690 89-85-NG Dynasty Gas Marketing 386 70305.FE 021690 89-87-NG Mobil Natural Gas Inc. 385 70302.FE 020790 89-79-NG Carson Water Company 384 70301.FE 02...

  14. 1995index.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    995 ORDERS ISSUED ORD1138 122795 95-122-NG TENNECO GAS MARKETING CO. 1138 ORD1137 122195 95-120-NG EASTEX HYDROCARBONS INC. 1137 ORD1136 122195 95-112-NG INDECK-YERKES LTD....

  15. Untitled - Notepad

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    123191 91-85-NG Texaco Gas Marketing, Inc. 570 ORD569.FE 11816 123191 91-57-NG Pan National Gas Sales 569 ORD568.FE 12128 123191 91-63-NG Panhandle Trading Company 568...

  16. 1994index.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Partnership ORD1011 121594 94-100-NG IGI Resources, Inc. ORD1010 121494 94-99-NG National Fuel Gas Distribution Corp. ORD1009 120994 94-96-NG Northwest Alaskan Pipeline...

  17. DOE - Fossil Energy:

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    FE95-106-NG 110395 Can Cascade Natural Gas Corporation 1141 FE95-109-NG 110795 Can Enron North America Corporation 1135 FE95-111-NG 110895 Can Enron North America...

  18. 1989.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    363 70278.FE 121889 89-19-NG Wisconsin Power and Light 362 70276.FE 121589 89-57-NG Enron Gas Marketing 360-A 70277.FE 121289 89-65-NG Amoco Energy Trading Corp. 361 70275.FE...

  19. 1986.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    49A 70639.ERA 032886 86-01-NG PGC Marketing, Inc. 117 70638.ERA 032786 85-32-NG El Paso Gas Marketing 116 70637.ERA 032586 86-02-NG Carson Water Company 115 70636.ERA 03...

  20. 1992index.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ORD675.FE 092892 92-72-NG Intalco Aluminum Corporation ORD674.FE 092492 92-85-NG Mercado Gas Services, Inc. ORD673.FE 092492 92-67-NG Columbus Energy Corporation ORD672.FE...

  1. DOE - Fossil Energy:

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    04 Can Boston Gas Company (Nexen) 1970 FE04-23-NG 022704 Can Essex Gas Company (BP Canada) 1958 FE04-24-NG 022704 Can Boston Gas Company (BP Canada) 1959 FE04-25-NG 022704...

  2. Low Cost Co-Production of Cellulose Nanofibrils and/or Cellulose Nanocrystals with Biofuels Using the AVAP Biorefinery Technology Kim Nelson, PhD

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Theodora Retsina CEO * 1995 - 2005 Engineering services in biomass industries * 2006 - 2010 Development of technologies lab/pilot * 2011 - 2014 Pilot / Demonstration * 2015 Commercialization Sugar is the new crude  Our History Sugars Biomass Polyethylene Diesel Jet Fuel Gasoline Acetaldehyde Acetic Anhydride Ethanolamines Polypropylene Ethyl Acetate Ethaol Ethylene Oxide Ethylene glycol Vinyl acetate PET Ethyl Ether n-butanol Ethylene Fossil Crude 3 Sugar is the New Crude® Fractionation

  3. The solubility of zinc oxide in 0.03 m NaTr as a function of temperature, with in situ pH measurement

    SciTech Connect (OSTI)

    Benezeth, P.; Palmer, D.A.; Wesolowski, D.J.

    1999-05-01

    The solubility of zincite (ZnO) has been measured in noncomplexing solutions over a wide range of pH{sub m} (4--11), and temperature (75--200 C) at 0.03 mol/kg ionic strength in NaTr media (sodium trifluoromethanesulfonate, a noncomplexing 1:1 electrolyte), in a hydrogen electrode concentration cell (HECC), which provided continuous in situ measurement of hydrogen ion molality. Total zinc content was analyzed by atomic absorption using graphite furnace, flame, and inductively coupled plasma (ICP) spectrometers. The direction of approach to the equilibrium saturation state was varied to demonstrate that the system was reversible thermodynamically. Separate experiments were performed in alkaline solutions (0.03 mol/kg NaOH) at 25 and 50 C in polypropylene syringes, and between 50 and 290 C in a Teflon-lined pressure vessel. The aim of these experiments was to reach higher pH{sub m} (>8 depending on the temperature) to determine the thermodynamic properties of the negatively charged species, Zn(OH){sub 3}{sup {minus}}. A least-squares regression of the results obtained at this ionic strength was used to determine the molal solubility products (Q{sub sn}) of zincite. The solubility products (Q{sub sn}) were extrapolated to infinite dilution (K{sub sn}), permitting calculation of the thermodynamic properties of aqueous species of zinc for comparison with previous work.

  4. Identifying Low pH Active and Lactate-Utilizing Taxa within Oral Microbiome Communities from Healthy Children Using Stable Isotope Probing Techniques

    SciTech Connect (OSTI)

    McLean, Jeffrey S.; Fansler, Sarah J.; Majors, Paul D.; Mcateer, Kathleen; Allen, Lisa Z.; Shirtliff, Mark E.; Lux, Renate; Shi, Wenyuan

    2012-03-05

    Many human microbial infectious diseases including dental caries are polymicrobial in nature and how these complex multi-species communities evolve from a healthy to a diseased state is not well understood. Although many health- or disease-associated oral microbes have been characterized in vitro, their physiology in vivo in the presence of the complex oral microbiome is difficult to determine with current approaches. In addition, about half of these oral species remain uncultivated to date and little is known except their 16S rRNA sequence. Lacking culture-based physiological analyses, the functional roles of uncultivated microorganisms will remain enigmatic despite their apparent disease correlation. To start addressing these knowledge gaps, we applied a novel combination of in vivo Magnetic Resonance Spectroscopy (MRS) with RNA and DNA based Stable Isotope Probing (SIP) to oral plaque communities from healthy children for temporal monitoring of carbohydrate utilization, organic acid production and identification of metabolically active and inactive bacterial species.

  5. Proceedings of the 34th International Conference in High Energy Physics (ICHEP08), Philadelphia, PA, 2008, eConf C080730, [hep-ph/0809.xxx

    SciTech Connect (OSTI)

    Lockyer, Nigel S.; Smith, AJ Stewart,; et. al.

    2008-09-01

    In 2004 a team from the University of Pennsylvania, Princeton University, and the Institute for Advanced Study proposed to host the 2008 International Conference on High Energy Physics (ICHEP) on the campus of the University of Pennsylvania in Philadelphia. The proposal was approved later that year by the C-11 committee of the International Union of Pure and Applied Physics. The Co-Chairs were Nigel S. Lockyer (U. Penn/TRIUMF) and A.J. Stewart Smith (Princeton); Joe Kroll of U. Penn served as Deputy Chair from 2007 on. Highlights of the proposal included 1. greatly increased participation of young scientists, women scientists, and graduate students 2. new emphasis on formal theory 3. increased focus on astrophysics and cosmology 4. large informal poster session (170 posters) in prime time 5. convenient, contiguous venues for all sessions and lodging 6. landmark locations for the reception and banquet. The conference program consisted of three days of parallel sessions and three days of plenary talks.

  6. Human radiation studies: Remembering the early years: Oral history of radiologist Hymer L. Friedell, M.D., Ph.D., conducted January 28, 1995

    SciTech Connect (OSTI)

    Fisher, D.; Melamed, E.

    1995-07-01

    NThis report is a transcript of an interview with Hymer L. Friedell by representatives of the US DOE Office of Human Radiation Experiments. Dr. Friedell was selected for this interview because of his participation in the early stages of the medical use of radioisotopes, his important role in the Manhattan Engineer District Medical Division, and his distinguished medical career and his involvement in the distribution of isotopes and the approval for their use in humans. After a brief biographical sketch Dr. Friedell discusses his remembrances on a wide range of subjects. Topics discussed include pre-war radiation therapy, information provided to patients, the Army Medical Corps and the Manhattan Project, his work at the Chicago Metallurgical Laboratory, inspection visits of Manhattan Project facilities and proposed sites, Plutonium injection studies, and actions of the AEC Isotope Distribution Committee.

  7. Human radiation studies: Remembering the early years: Oral history of physician James S. Robertson, M.D., Ph.D., conducted January 20, 1995

    SciTech Connect (OSTI)

    1995-09-01

    This report is a transcript of in interview of Dr. James S. Robertson by representatives of the DOE Office of Human Radiation Experiments. Dr. Robertson was chosen for this interview because of his research at Brookhaven National Laboratory, especially on Boron Neutron Capture Therapy (BNCT); his work at the United States Naval Defense Laboratory; and his work at the Atomic Energy Commission. After a brief biographical sketch Dr. Robertson discusses research on human subjects at Berkeley, his contributions to the beginnings of Neutron Capture Therapy at Brookhaven, his participation with the Brookhaven Human Use Committee, his involvement in the study of the effects of Castle Bravo event on the Marshallese, and his work with the Naval Radiological Defense Laboratory.

  8. Human radiation studies: Remembering the early years: Oral history of cell biologist Don Francis Petersen, Ph.D., conducted November 29, 1994

    SciTech Connect (OSTI)

    1995-08-01

    This report is a transcript of an interview of Dr. Don Francis Petersen by representatives of the US DOE Office of Human Radiation Experiments. Dr. Petersen was selected for this interview because of his long research career at Los Alamos and his knowledge of the Atomic Energy Commission`s biomedical program. Dr. Petersen did not personally conduct research on human subjects. After a brief biographical sketch Dr. Petersen discusses his remembrances of the early use of radionuclides as biological tracers, aspects of nuclear weapons testing in the 1940`s and 1950`s including fallout studies, the means by which research projects were approved, use of humans in the whole-body counter, and the Health Division Biomedical responsibilities.

  9. Solvent Refined Coal (SRC) process: trace elements. Volume III. Pilot plant development work. Part 6. Fate of trace elements in the SRC process. [Ph. D. Thesis

    SciTech Connect (OSTI)

    Weiss, C.S.

    1980-09-01

    A study of the forms of trace elements occurring in Solvent Refined Coal has been performed by chemical separation of the Solvent Refined Coal based on differences in the functionality and molecular weight of the organic matrix. Analysis of the fractions separated for various trace elements has revealed associations of certain elements with other elements as well as with certain fractions. The analysis of Solvent Refined Coal I by these methods provided data on the distribution of Ti, V, Ca, S, Al, Mn, As, Se, Cr, Fe, Ni, Zn, Sc, and Ga in the fractions generated. Because of the low trace element content of Solvent Refined Coal II only As, Se, and Cr could be detected in the silica fractions. Based on the distributions three different groups of elements have been based on the association of elements with each other and with certain fractions. The first group is composed of As, Se, and Cr associated with silica fractions of relatively low functionality; these elements have a high percent solubility in the starting Solvent Refined Coal II oil. The second group composed of Ti, V, and to a lesser extent a second form of Cr, is associated with fractions that have a high concentration of phenolic material and is probably present as phenoxide complexes. The third group composed of Fe, Ca, K, Al, and Mg is associated with the most functional fractions and is possibly present as humic acid type complexes or as submicron size particulates. The integration of chromatographic methods with trace element analysis of the fractions generated is capable of discerning the presence of different forms of the elements. The methods used are applicable to other important geologically occurring organic matter.

  10. QER Report: Energy Transmission, Storage, and Distribution Infrastruct...

    Energy.gov (indexed) [DOE]

    NG-1 Chapter VII Appendix B NATURAL GAS NG-2 QER Report: Energy Transmission, Storage, and Distribution Infrastructure | April 2015 Appendix B: NATURAL GAS Highlights Increasing...

  11. HEP-v2-for-dist

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Case S tudy: C on.nuing S tudies o f P lasma B ased Accelerators ( mp113) * PI: W. B. Mori (UCLA) * Presenter: F. S. Tsung (UCLA) Users: W. An, A. Davidson, V. K. Decyk, (UCLA), J. Vieira, L. Silva (IST), W. Lu (UCLA/ Tsinghua) F. S. Tsung, HEP Workshop HEP R equirements: Con.nuing S tudies o f P lasma B ased A ccelerators ( mp113) (PI: W . B . M ori, P resenter: F . S . T sung) An alternate scheme to accelerate particles using plasmas is the Plasma WakeField Accelerator (PWFA) concept where a

  12. Automotive Stirling engine Mod I design-review report

    SciTech Connect (OSTI)

    Not Available

    1982-08-01

    This report constitutes the required Design Review Report. It is a compilation of all of the unrestricted (non-protectable) information presented/discussed at the May 22-23, 1980 ASE Mode I Design Review held at NASA-LeRC. This Design Review Meeting was an update to the preliminary ASE Mod I Design Assessment Meeting held at NASA-LeRC on January 16-17, 1980. As the result of the January review, NASA authorized MTI to proceed with the procurement/fabrication of certain long lead time parts.

  13. Utilizing Load Response for Wind and Solar Integration and Power System Reliability

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    7 July 2010 Utilizing Load Response for Wind and Solar Integration and Power System Reliability Michael Milligan and Brendan Kirby Presented at WindPower 2010 Dallas, Texas May 23-26, 2010 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (ASE), a contractor of the US Government under Contract No. DE-AC36-08-GO28308. Accordingly, the US Government and ASE retain a nonexclusive royalty-free license to publish or reproduce the published

  14. Optically pumped molecular bromine laser. Master's thesis

    SciTech Connect (OSTI)

    Morrison, J.W.

    1990-12-01

    An optically pumped molecular bromine laser was studied to investigate the quenching kinetics state of Br2. This included characterization of the pressure dependence of the laser output power. The approach was to excite molecular bromine in a sealed cell with a Nd:YAG pumped dye laser. Unresolved side fluorescence and amplified stimulated emission (ASE) spectra were recorded. ASE offered the advantage of a simpler optical system with no externally induced wavelength dependencies. Stimulated emission as a signal monitor offered greater resolution than side fluorescence spectra and facilitated spectroscopic assignment. (JS)

  15. Slide 1

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Jonathan A. Dowell DOE-RL Assistant Manager for River and Plateau S a fe a n d E ff e c ti v e C le a n u p th a t P ro te c ts th e C o lu m b ia R iv e r  Re du ce s the Ac tiv e Sit e Fo otp rin t of Cle an up to 75 Sq ua re Mi les (58 6 to 75 )  Sig nif ica ntl y Re du ce s Lo ng -Te rm Mo rtg ag e Co sts  At Co mp let ion , Sh ifts Em ph as is an d Re so urc es to Fu ll Sc ale Cle an up of the Ce ntr al Pla tea u (75 sq ua re mi les )  Re du ce s Co sts by "R igh t Siz ing

  16. Synergy between Membranes and Microbial Fuel Cells

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    S Sy yn ne er rg gy y b be et tw we ee en n M Me em mb br ra an ne es s a an nd d M Mi ic cr ro ob bi ia al l F Fu ue el l C Ce el ll ls s Zhen (Jason) He, Ph.D. Associate Professor � Department of Civil and Environmental Engineering � Virginia Polytechnic Institute and State University � DOE Workshop on Hydrogen, Hydrocarbons, and Bioproduct Precursors from Wastewaters March 18-19, Washington DC * Hi h- lit effluent for direct dischar e or W Wh hy y l li in nk ki in ng g " "f fi

  17. W

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Control Room Modernization Ron Boring, PhD October 29, 2015 A Programmatic Solution to Aging Plants DOE L ight W ater R eactor S ustainability P rogram C harter * Assist u :li:es w ith s afely e xtending t he l ife o f c urrently o pera:ng p lants * Original l icenses w ere f or 4 0 y ears * Extensions u p t o 6 0 o r 8 0 y ears * Broad a rea f ocus, i ncluding h uman f actors * Dr. B ruce H allbert i s p athway l ead f or f our p ilot p rojects r elevant t o h uman f actors in c ontrol r ooms -

  18. A=6B (1984AJ01)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    4AJ01) (Not illustrated) Not observed: see (1982NG01; theor.

  19. A=7C (1984AJ01)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    C (1984AJ01) (Not illustrated) Not observed: see (1982NG01; theor.).

  20. A=8N (1984AJ01)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    N (1984AJ01) (Not illustrated) Not observed: see (1982NG01; theor.).

  1. A=9N (1984AJ01)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    4AJ01) (Not illustrated) Not observed: see (1979AJ01). See also (1982NG01

  2. 1996index.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    96 96-24-NG West Texas Gas, Inc. ORD1165.FE 051696 96-22-NG NUI Corporation 87-53-NG Tennessee Gas Pipeline Co. ORD1164.FE 051496 96-23-NG IGI Resources, Inc. ORD1014-A.FE...

  3. Procedures - 88-Inch Cyclotron

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Procedures You must be logged in with your Berkeley Lab LDAP to view these documents PUB-3000 Cyclotron Procedures Mechanical Procedures Electrical Procedures Ion Source Procedures Accelerator Safety (SAD & ASE) Cyclotron Policies & Plans Radiological Work Authorizations Memorandums Forms Abbreviations & Acronyms

  4. A

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Located a t t he b ase o f t he J emez M ountains i n n orthern New M exico, t his b eau;ful n atural e nvironment a waits a n opportunity f or y ou t o w ork i n a w...

  5. Linearly polarized fiber amplifier

    DOE Patents [OSTI]

    Kliner, Dahv A.; Koplow, Jeffery P.

    2004-11-30

    Optically pumped rare-earth-doped polarizing fibers exhibit significantly higher gain for one linear polarization state than for the orthogonal state. Such a fiber can be used to construct a single-polarization fiber laser, amplifier, or amplified-spontaneous-emission (ASE) source without the need for additional optical components to obtain stable, linearly polarized operation.

  6. A

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Heavy Nuclei and Texas Robert A lonzo W elch (1872-1952) The W elch F ounda5on, b ased i n ... U SA) M.G. I tkis ( JINR, R ussia) R.V.F. J anssens ( ANL, U SA) Big was born in Texas ...

  7. GabrielCollin_uB_DNP.pptx

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ddress w hether t he MiniBooNE e xcess w as e o r : In t he n ext p hase b ecome a p art o f a n LArTPC b ased S BL p rogram... Electron---like s ignal Photon---like s ignal...

  8. Plug and Play Components for Building Integrated PV Systems, Phase II Final Report, 20 February 2003 - 31 May 2007

    SciTech Connect (OSTI)

    Rowell, D.

    2008-04-01

    Progress by Schott Solar, Inc. under NREL's PV Manufacturing R&D Project. Details progress on meter-interconnect device; free-standing mounting system; dark I-V curves to unearth problems with PV module strings; new 34-V version of ASE-300 PV module; and updated source-circuit protectors.

  9. NERSC_Capability_Run_Rules.docx

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    un t he b enchmark w ill b e c hosen b y t he vendor t o p rovide t he b est p erformance. ... e nabled b y i ncreasing t he n umber o f k --- points u sed i n t he l arge t est c ase. ...

  10. Ninth International Workshop on Plant Membrane Biology

    SciTech Connect (OSTI)

    Not Available

    1993-12-31

    This report is a compilation of abstracts from papers which were discussed at a workshop on plant membrane biology. Topics include: plasma membrane ATP-ases; plant-environment interactions, membrane receptors; signal transduction; ion channel physiology; biophysics and molecular biology; vaculor H+ pumps; sugar carriers; membrane transport; and cellular structure and function.

  11. Sandia National Laboratories is a multi-program laboratory managed...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    b ase of t he s tack t hat h as m ul?ple m emory c ontrollers a nd I O Current p arts ( shipping) 2 a nd 4 G bytes 128 ( 2GB), 2 56 ( 4GB) m emory b anks ...

  12. WIPP Update 3_29_14

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Office (575) 234-7545 www.wipp.energy.gov 2 allow, t he t eam w ill e xpand t he c lean b ase o f o perations t o a llow t eam m embers t o progress a nd work t heir w ay t o...

  13. Development of SRC-I product analysis. Volume 3. Documentation of procedures

    SciTech Connect (OSTI)

    Schweighardt, F.K.; Kingsley, I.S.; Cooper, F.E.; Kamzelski, A.Z.; Parees, D.M.

    1983-09-01

    This section documents the BASIC computer program written to simulate Wilsonville's GC-simulated distillation (GCSD) results at APCI-CRSD Trexlertown. The GC conditions used at APCI for the Wilsonville GCSD analysis of coal-derived liquid samples were described in the SRC-I Quarterly Technical Report, April-June 1981. The approach used to simulate the Wilsonville GCSD results is also from an SRC-I Quarterly Technical Report and is reproduced in Appendix VII-A. The BASIC computer program is described in the attached Appendix VII-B. Analysis of gases produced during coal liquefaction generates key information needed to determine product yields for material balance and process control. Gas samples from the coal process development unit (CPDU) and tubing bombs are the primary samples analyzed. A Carle gas chromatographic system was used to analyze coal liquefaction gas samples. A BASIC computer program was written to calculate the gas chromatographic peak area results into mole percent results. ICRC has employed several analytical workup procedures to determine the amount of distillate, oils, asphaltenes, preasphaltenes, and residue in SRC-I process streams. The ASE procedure was developed using Conoco's liquid column fractionation (LC/F) method as a model. In developing the ASE procedure, ICRC was able to eliminate distillation, and therefore quantify the oils fraction in one extraction step. ASE results were shown to be reproducible within +- 2 wt %, and to yield acceptable material balances. Finally, the ASE method proved to be the least affected by sample composition.

  14. Development of novel separation techniques for biological samples in capillary electrophoresis

    SciTech Connect (OSTI)

    Chang, H.T.

    1994-07-27

    This dissertation includes three different topics: general introduction of capillary electrophoresis (CE); gradient in CE and CE in biological separations; and capillary gel electrophoresis (CGE) for DNA separation. Factors such as temperature, viscosity, pH, and the surface of capillary walls affecting the separation performance are demonstrated. A pH gradient between 3.0 and 5.2 is useful to improve the resolution among eight different organic acids. A flow gradient due to the change in the concentration of surfactant, which is able to coat to the capillary wall to change the flow rate and its direction, is also shown as a good way to improve the resolution for organic compounds. A temperature gradient caused by joule heat is shown by voltage programming to enhance the resolution and shorten the separation time for several phenolic compounds. The author also shows that self-regulating dynamic control of electroosmotic flow in CE by simply running separation in different concentrations of surfactant has less matrix effect on the separation performance. One of the most important demonstrations in this dissertation is that the author proposes on-column reaction which gives several advantages including the use of a small amount of sample, low risk of contamination, and time saving and kinetic features. The author uses this idea with laser induced fluorescence (LIF) as a detection mode to detect an on-column digestion of sub-ng of protein. This technique also is applied to single cell analysis in the group.

  15. Binding and Direct Electrochemistry of OmcA, an Outer-Membrane Cytochrome from an Iron Reducing Bacterium, with Oxide Electrodes: A Candidate Biofuel Cell System

    SciTech Connect (OSTI)

    Eggleston, Carrick M.; Voros, Janos; Shi, Liang; Lower, Brian H.; Droubay, Timothy C.; Colberg, Patricia J.

    2008-02-15

    Dissimilatory iron-reducing bacteria transfer electrons to solid ferric respiratory electron acceptors. Outer-membrane cytochromes expressed by these organisms are of interest in both microbial fuel cells and biofuel cells. We use optical waveguide lightmode spectroscopy (OWLS) to show that OmcA, an 85 kDa decaheme outer-membrane c-type cytochrome from Shewanella oneidensis MR-1, adsorbs to isostructural Al2O3 and Fe2O3 in similar amounts. Adsorption is ionic-strength and pH dependent (peak adsorption at pH 6.57.0). The thickness of the OmcA layer on Al2O3 at pH 7.0 [5.8 1.1 (2r) nm] from OWLS is similar, within error, to that observed using atomic force microscopy (4.8 2 nm). The highest adsorption density observed was 334 ng cm 2 (2.4 1012 molecules cm 2), corresponding to a monolayer or 9.9 nm diameter spheres or submonolayer coverage by smaller molecules. Direct electrochemistry of OmcA on Fe2O3 electrodes was observed using cyclic voltammetry, with cathodic peak potentials of 380 to 320 mV versus Ag/AgCl. Variations in the cathodic peak positions are speculatively attributed to redox-linked conformation change or changes in molecular orientation. OmcA can exchange electrons with ITO electrodes at higher current densities than with Fe2O3. Overall, OmcA can bind to and exchange electrons with several oxides, and thus its utility in fuel cells is not restricted to Fe2O3.

  16. Investigation into the effects of trace coal syn gas species on the performance of solid oxide fuel cell anodes, PhD. thesis, Russ College of Engineering and Technology of Ohio University

    SciTech Connect (OSTI)

    Trembly, J. P.

    2007-06-01

    Coal is the United States’ most widely used fossil fuel for the production of electric power. Coal’s availability and cost dictates that it will be used for many years to come in the United States for power production. As a result of the environmental impact of burning coal for power production more efficient and environmentally benign power production processes using coal are sought. Solid oxide fuel cells (SOFCs) combined with gasification technologies represent a potential methodology to produce electric power using coal in a much more efficient and cleaner manner. It has been shown in the past that trace species contained in coal, such as sulfur, severely degrade the performance of solid oxide fuel cells rendering them useless. Coal derived syngas cleanup technologies have been developed that efficiently remove sulfur to levels that do not cause any performance losses in solid oxide fuel cells. The ability of these systems to clean other trace species contained in syngas is not known nor is the effect of these trace species on the performance of solid oxide fuel cells. This works presents the thermodynamic and diffusion transport simulations that were combined with experimental testing to evaluate the effects of the trace species on the performance of solid oxide fuel cells. The results show that some trace species contained in coal will interact with the SOFC anode. In addition to the transport and thermodynamic simulations that were completed experimental tests were completed investigating the effect of HCl and AsH3 on the performance of SOFCs.

  17. 1988.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    291 70831.ERA 123088 88-57-NG Natgas (U.S.), Inc. 290 70133.ERA 122388 87-34-LNG Pan National Gas Sales 289 70830.ERA 122388 88-65-NG Hadson Gas Systems, Inc. 288 70829.ERA...

  18. DOE - Fossil Energy: Orders Issued in 2012

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... Nations 3127 FE12-71-NG 072412 Iberdrola Renewables, LLC Order Granting Blanket ... Prior Authority 2773 3080 FE12-31-NG 032712 Iberdrola Canada Energy Services, Ltd. ...

  19. DOE - Fossil Energy:

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Date Filed CTY Authorization Holder Application Link Ord. No. FE99-19-NG 030499 Can Enron North America Corporation 1470 1470-A FE99-22-NG 032999 Can Cascade Natural Gas...

  20. 1993index.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Northern States Pwr Co (Minn) ORD874.FE 102993 93-114-NG Northern States Pwr Co (Wisc) ORD874.FE 102993 93-114-NG Peoples Natural Gas Co, Div of Utilicorp United, Inc ---...

  1. 1987.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    207 70738.ERA 112087 86-61-NG Minnegasco 191-A 70128.ERA 111687 87-42-LNG PhillipsMarathon 206 70736.ERA 110487 87-46-NG Williams Gas Marketing 205 70735.ERA 1030...

  2. II-GRR at GRC - Analyses slides.pptx

    Open Energy Information (Open El) [EERE & EIA]

    for development of materials and upcoming meetings Roadmap D evelopment S tatus Mee2ngs* 25% 50% 75% 100% Reviewed & P rinted Mee4ng 1 Agency Follow--- up Mee4ng 2 Federal 53 6...

  3. DOE - Fossil Energy:

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    103098 Can Husky Gas Marketing Inc. 1432 1432-A FE98-87-NG 110408 Can Mex Pemex Gas Y Petroquimica Basica 1435 FE98-92-NG 112098 Can Union Pacific Fuels, Inc. 1444...

  4. 1980.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    0 -- ORDERS ORDER DOCKET ERA CITE DATE NUMBER APPLICANT NAME ORDER NO. 70525.ERA 122380 79-31-NG Border Gas, Inc. 16B 70524.ERA 112080 80-08-NG Valero Transmission Company 25...

  5. 1981.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    70114.ERA 092581 77-006-LNG El Paso Eastern Company 4A 70542.ERA 072081 79-16-NG Montana Power Company 23A 70534.ERA 070281 80-15-NG Vermont Gas Systems 34 70533.ERA 0629...

  6. 1985.PDF

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    88A 70609.ERA 110885 85-12-NG Northwest Pipeline 87A 70126.ERA 102385 77-001-LNG Pac IndonesiaWestern LNG 8A 70608.ERA 101585 85-17-NG Vermont Gas Systems 91 70607.ERA...

  7. DOE - Fossil Energy:

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    2009 Docket No. Date Filed CTY Application LinkCompany Ord. No. FE09-87-NG 082509 Canada Puget Sound Energy, Inc. 2717 FE09-88-NG 082509 Canada Puget Sound Energy, Inc. 2718...

  8. American LNG Hialeah Facility Terminal

    Office of Energy Efficiency and Renewable Energy (EERE)

    1. R = Registration of company; C (LNG) = Contract involving LNG; C (NG)= Contract involving natural gas supply

  9. R

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    IEEE R eboo(ng C ompu(ng I ni(a(ve: part o f t he I EEE F uture D irec(ons C ommi;ee Change i s c oming t o t he c ompu(ng i ndustry Let's t alk a nd t hink a bout i t s o w e c an...

  10. The x-ray time of flight method for investigation of ghosting in amorphous selenium-based flat panel medical x-ray imagers

    SciTech Connect (OSTI)

    Rau, A.W.; Bakueva, L.; Rowlands, J.A.

    2005-10-15

    Amorphous selenium (a-Se) based real-time flat-panel imagers (FPIs) are finding their way into the digital radiology department because they offer the practical advantages of digital x-ray imaging combined with an image quality that equals or outperforms that of conventional systems. The temporal imaging characteristics of FPIs can be affected by ghosting (i.e., radiation-induced changes of sensitivity) when the dose to the detector is high (e.g., portal imaging and mammography) or the images are acquired at a high frame rate (e.g., fluoroscopy). In this paper, the x-ray time-of-flight (TOF) method is introduced as a tool for the investigation of ghosting in a-Se photoconductor layers. The method consists of irradiating layers of a-Se with short x-ray pulses. From the current generated in the a-Se layer, ghosting is quantified and the ghosting parameters (charge carrier generation rate and carrier lifetimes and mobilities) are assessed. The x-ray TOF method is novel in that (1) x-ray sensitivity (S) and ghosting parameters can be measured simultaneously (2) the transport of both holes and electrons can be isolated, and (3) the method is applicable to the practical a-Se layer structure with blocking contacts used in FPIs. The x-ray TOF method was applied to an analysis of ghosting in a-Se photoconductor layers under portal imaging conditions, i.e., 1 mm thick a-Se layers, biased at 5 V/{mu}m, were irradiated using a 6 MV LINAC x-ray beam to a total dose (ghosting dose) of 30 Gy. The initial sensitivity (S{sub 0}) of the a-Se layers was 63{+-}2 nC cm{sup -2} cGy{sup -1}. It was found that S decreases to 30% of S{sub 0} after a ghosting dose of 5 Gy and to 21% after 30 Gy at which point no further change in S occurs. At an x-ray intensity of 22 Gy/s (instantaneous dose rate during a LINAC x-ray pulse), the charge carrier generation rate was 1.25{+-}0.1x10{sup 22} ehp m{sup -3} s{sup -1} and, to a first approximation, independent of the ghosting dose. However, both

  11. Workshop on Condensing Heating and Water Heating Equipment

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Workshop on Condensing Heating and Water Heating Equipment Thursday, October 9, 2014 List of Attendees Organization/Attendees DOE - John Cymbalsky - Ashley Armstrong - Johanna Hariharan AGA - Kathryn Clay - Rick Murphy - Lisa Dundon APGA - Dave Schryver - Bud Miller Gas Technology Institute - Neil Leslie Washington Gas Light - Melissa Adams - Kevin Dunn ACEEE - Harvey Sachs ASAP - Andrew deLaski ASE - Rodney Sobin NRDC - Elizabeth Noll AHRI - Frank Stanonik ACCA - Charlie McCrudden - Glenn

  12. DOE OIG INS-O-15-02 - November 2014 - Public_0.pdf

    Energy Savers

    NNSA Site Facility Management Contracts June 2016 Contract Title Program Contractor Composition of Contractor Contract Number Contract Type Business Model FY Competed Award Date Current Contract End date Options/Award Term Remaining Ultimate Potential Contract End Date (includes all potential award term and option years) DOE Site Procurement Director DOE Contracting Officer National Renewable Energy Laboratory (NREL) EERE Alliance for Sustainable Energy (ASE) Battelle Memorial Institute,

  13. Grji'

    Office of Legacy Management (LM)

    Grji' cd ,-ytE,tes Government w. / -/ I-i' -- -' - ,:' d--z, L, -. m Deparlment of Energy REPLY TO NE-20 ATTN OF. SUGJECT: Designation of Sites for Remedial Action - Metal Hydrides, Beverly, MA; Bridgeport Brass, Adrian, MI and Seymour, Chicago, IL CT; National Guard Amory, TO. Joe LaGrone, Macager Oak Ridge Operations Office 6ased on the attached radiological survey data (Attachments 1 through 3) and an appropriate authority review, the following properties are being authorized for remedial

  14. Fast iterative technique for the calculation of frequency dependent gain in excimer laser amplifiers

    SciTech Connect (OSTI)

    Sze, R.C.

    1991-01-01

    The motivation in initiating these calculations is to allow us to observe the frequency evolution of a laser pulse as it propagates through an amplifier and then through a sequence of amplifiers. The question we seek to answer is what pulse shape do we need to produce out of a front-end oscillator so that after it propagates through the whole Aurora KrF fusion amplifier chain will result in high energy, broad-band laser fields of a given bandwidth that can be focussed onto a fusion target. The propagation of a single frequency source through an amplifier with distributed loss was considered by Rigrod and was significantly expanded by Hunter and Hunter. The latter included amplified spontaneous emission (ASE) considerations both in the direction of and transverse to the coherent field. Analytic solutions that include forward and backward prapagating fields and ASE were derived which were transcendental in nature but allowed for fairly easy computer calculations. Transverse ASE were calculated using the unsaturated gain resulting from longitudinal fields and were used to compare this with the longitudinal field equations. Large computer programs are now available at LANL which include the influence of transverse ASE on the longitudinal fields. However, none of these considerations have worried about the changes in the frequency characteristics of the propagating field or of how each of the frequency field components contributes to the saturation of the gain. The inclusion of full frequency characteristics to the analytic solutions of Hunter and Hunter proved impossible at least for this author and a new calculational technique was developed and is the subject of this talk.

  15. DOE NNSA Site Facility Management Contracts - MASTER.xlsx

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    NNSA Site Facility Management Contracts June 2016 Contract Title Program Contractor Composition of Contractor Contract Number Contract Type Business Model FY Competed Award Date Current Contract End date Options/Award Term Remaining Ultimate Potential Contract End Date (includes all potential award term and option years) DOE Site Procurement Director DOE Contracting Officer National Renewable Energy Laboratory (NREL) EERE Alliance for Sustainable Energy (ASE) Battelle Memorial Institute,

  16. Accelerated Commercialization of Federally-Sponsored Energy Efficiency and Renewable Energy Technologies, May 2007.

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Accelerated Commercialization of Federally-Sponsored Energy Efficiency and Renewable Energy Technologies May 2007 Introduction: The State Energy Advisory Board (STEAB) recently met with the DOE Assistant Secretary of Energy Efficiency and Renewable Energy (ASEE), Mr. Alexander A. (Andy) Karsner, and discussed the imperative for achieving dramatic increases in adoption of federally-funded and researched technologies through creative thinking and out-of-the-box approaches. STEAB agrees with this

  17. Microsoft Word - NAP Coalition Response to DOE RFI DRAFT 10.11.01.docx

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    NAP Coalition Response to DOE RFI Addressing Policy and Logistical Challenges to Smart Grid Implementation November 1, 2010 The NAP Coalition is a "Coalition of Coalitions" that has been formed for the purpose of implementing the National Action Plan released by FERC in cooperation with DOE in June of 2010. Organizations working together on NAP implementation in include EEI, APPA, NRECA, ASE, ACEEE, NASUCA, NARUC, NASEO, DRSG, DRCC and EDF. The NAP Coalition submits a response in this

  18. Fuel Cell Technologies Program Multi-Year Research, Development and Demonstration Plan - Appendix E: Acronyms

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    E - Acronyms Multi-Year Research, Development and Demonstration Plan Page E - 1 Appendix E - Acronyms AEI Advanced Energy Initiative AEO Annual Energy Outlook AFC Alkaline Fuel Cell AHJ Authorities Having Jurisdiction AMFC Alkaline Membrane Fuel Cells AMR Annual Merit Review ANL (DOE) Argonne National Laboratory APU Auxiliary Power Unit ARRA American Recovery and Reinvestment Act of 2009 ASES American Solar Energy Society ASME American Society of Mechanical Engineers AST Accelerated Stress Test

  19. Barbara Helland Advanced Scientific Computing Research NERSC-HEP Requirements Review

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    7-28, 2012 Barbara Helland Advanced Scientific Computing Research NERSC-HEP Requirements Review 1 Science C ase S tudies d rive d iscussions Program R equirements R eviews  Program offices evaluated every two-three years  Participants include program managers, PI/ Scientists, ESnet/NERSC staff and management  User-driven discussion of science opportunities and needs  What: Instruments and facilities, data scale, computational requirements  How: science process, data analysis,

  20. World's First 3-D Printed Car | Department of Energy

    Energy Savers

    Workshop on Condensing Heating and Water Heating Equipment Thursday, October 9, 2014 List of Attendees Organization/Attendees DOE - John Cymbalsky - Ashley Armstrong - Johanna Hariharan AGA - Kathryn Clay - Rick Murphy - Lisa Dundon APGA - Dave Schryver - Bud Miller Gas Technology Institute - Neil Leslie Washington Gas Light - Melissa Adams - Kevin Dunn ACEEE - Harvey Sachs ASAP - Andrew deLaski ASE - Rodney Sobin NRDC - Elizabeth Noll AHRI - Frank Stanonik ACCA - Charlie McCrudden - Glenn

  1. Jefferson Lab Environment, Safety, Health and Quality Division

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    FSAD & ASE Chemical Inventory/MSDS print version GROUPS ES&H Committees Emergency Management Environmental Occupational Medicine Quality Assurance & Continuous Improvement Radiation Control Health & Safety Programs Integrated Safety Management Site Associate Director's Office Environmental Management System Documents Safety Wardens LINKS Safety Observations Suspect/Counterfeit Identification Materials Training Home Page ES&H Contacts ESH&Q Document Review Database Key

  2. Structure and function of photosystem I–[FeFe] hydrogenase protein fusions: An all-atom molecular dynamics study

    SciTech Connect (OSTI)

    Harris, Bradley J.; Cheng, Xiaolin; Frymier, Paul

    2015-12-15

    All-atom molecular dynamics (MD) simulation was used to study the solution dynamics and protein protein interactions of protein fusions of photosystem I (PSI) from Thermosynechococcus elongatus and an [FeFe]-hydrogenase (FeFe H2ase) from Clostridium pasteurianum, a unique complex capable of photocatalytic hydrogen production. This study involved fusions of these two proteins via dithiol linkers of different length including decanedithiol, octanedithiol, and hexanedithiol, for which experimental data had previously been obtained. Evaluation of root-mean-squared deviations (RMSDs) relative to the respective crystal structures of PSI and the FeFe H2ase shows that these fusion complexes approach stable equilibrium conformations during the MD simulations. Investigating protein mobility via root-mean-squared fluctuations (RMSFs) reveals that tethering via the shortest hexanedithiol linker results in increased atomic fluctuations of both PSI and the hydrogenase in these fusion complexes. Furthermore, evaluation of the inter- and intraprotein electron transfer distances in these fusion complexes indicates that the structural changes in the FeFe H2ase arising from ligation to PSI via the shortest hexanedithiol linker may hinder electron transport in the hydrogenase, thus providing a molecular level explanation for the observation that the medium-length octanedithiol linker gives the highest hydrogen production rate.

  3. Gratings for Increasing Solid-State Laser Gain and Efficiency

    SciTech Connect (OSTI)

    Erlandson, A C; Britten, J A; Bonlie, J D

    2010-04-16

    We introduce new concepts for increasing the efficiency of solid state lasers by using gratings deposited on laser slabs or disks. The gratings improve efficiency in two ways: (1) by coupling out of the slab deleterious amplified spontaneous emission (ASE) and (2) by increasing the absorption efficiency of pump light. The gratings also serve as antireflective coatings for the extracting laser beam. To evaluate the potential for such coatings to improve laser performance, we calculated optical properties of a 2500 groove/mm, tantala-silica grating on a 1cm x 4cm x 8cm titanium-doped sapphire slab and performed ray-trace calculations for ASE and pump light. Our calculations show substantial improvements in efficiency due to grating ASE-coupling properties. For example, the gratings reduce pump energy required to produce a 0.6/cm gain coefficient by 9%, 20% and 35% for pump pulse durations of 0.5 {micro}s, 1{micro}s and 3{micro}s, respectively. Gratings also increase 532-nm pump-light absorption efficiency, particularly when the product slab overall absorption is small. For example, when the single-pass absorption is 1 neper, absorption efficiency increases from 66%, without gratings, to 86%, when gratings are used.

  4. Structure and function of photosystem I–[FeFe] hydrogenase protein fusions: An all-atom molecular dynamics study

    DOE PAGES-Beta [OSTI]

    Harris, Bradley J.; Cheng, Xiaolin; Frymier, Paul

    2015-12-15

    All-atom molecular dynamics (MD) simulation was used to study the solution dynamics and protein protein interactions of protein fusions of photosystem I (PSI) from Thermosynechococcus elongatus and an [FeFe]-hydrogenase (FeFe H2ase) from Clostridium pasteurianum, a unique complex capable of photocatalytic hydrogen production. This study involved fusions of these two proteins via dithiol linkers of different length including decanedithiol, octanedithiol, and hexanedithiol, for which experimental data had previously been obtained. Evaluation of root-mean-squared deviations (RMSDs) relative to the respective crystal structures of PSI and the FeFe H2ase shows that these fusion complexes approach stable equilibrium conformations during the MD simulations. Investigatingmore » protein mobility via root-mean-squared fluctuations (RMSFs) reveals that tethering via the shortest hexanedithiol linker results in increased atomic fluctuations of both PSI and the hydrogenase in these fusion complexes. Furthermore, evaluation of the inter- and intraprotein electron transfer distances in these fusion complexes indicates that the structural changes in the FeFe H2ase arising from ligation to PSI via the shortest hexanedithiol linker may hinder electron transport in the hydrogenase, thus providing a molecular level explanation for the observation that the medium-length octanedithiol linker gives the highest hydrogen production rate.« less

  5. Optimization of Operating Parameters for Minimum Mechanical Specific...

    Office of Scientific and Technical Information (OSTI)

    Mechanical Engineering Approved by Bruce Kang, PhD, Committee Chairperson James Smith, Ph.D. Larry Banta, Ph.D. Department of Mechanical and Aerospace Engineering Keith ...

  6. Methods of natural gas liquefaction and natural gas liquefaction plants utilizing multiple and varying gas streams

    SciTech Connect (OSTI)

    Wilding, Bruce M; Turner, Terry D

    2014-12-02

    A method of natural gas liquefaction may include cooling a gaseous NG process stream to form a liquid NG process stream. The method may further include directing the first tail gas stream out of a plant at a first pressure and directing a second tail gas stream out of the plant at a second pressure. An additional method of natural gas liquefaction may include separating CO.sub.2 from a liquid NG process stream and processing the CO.sub.2 to provide a CO.sub.2 product stream. Another method of natural gas liquefaction may include combining a marginal gaseous NG process stream with a secondary substantially pure NG stream to provide an improved gaseous NG process stream. Additionally, a NG liquefaction plant may include a first tail gas outlet, and at least a second tail gas outlet, the at least a second tail gas outlet separate from the first tail gas outlet.

  7. Microsoft PowerPoint - HAB 2012 Final.pptx

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    fe a n d E ff e c ti v e C le a n u p th a t P ro te c ts th e C o lu m b ia R iv e r Re du ce s th e Ac tiv e Sit e Fo ot pr int of Cl ea nu p to 75 Sq ua re Mi les (5 86 to 75 ) Sig ni fic an tly Re du ce s Lo ng -T erm Mo rtg ag e Co st s At Co m pl eti on , Sh ift s Em ph as is an d Re so ur ce s to Fu ll of th e Ce nt ra l Pla tea u (7 5 sq ua re m ile s) Re du ce s Co st s by "R i Mi ss io Ri ch la nd O pe ra tio ns Of fic e B & C Ar ea Inte rim Saf e Sto rag e f N Ar ea Inte rim

  8. Microsoft PowerPoint - HAB1111-Dowellfinalnobu.pptx

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    fe a n d E ff e c ti v e C le a n u p th a t P ro te c ts th e C o lu m b ia R iv e r ¾ Re du ce s th e Ac tiv e Sit e Fo ot pr int of Cl ea nu p to 75 Sq ua re Mi les (5 86 to 75 ) ¾ Sig ni fic an tly Re du ce s Lo ng -T erm Mo rtg ag e Co st s ¾ At Co m pl eti on , Sh ift s Em ph as is an d Re so ur ce s to Fu ll of th e Ce nt ra l Pla tea u (7 5 sq ua re m ile s) ¾ Re du ce s Co st s by "R i Mi ss io Ri ch la nd O pe ra tio ns Of fic e B & C Ar ea 9 Inte rim Saf e Sto rag e f 9 N

  9. Photovoltaic System Modeling. Uncertainty and Sensitivity Analyses

    SciTech Connect (OSTI)

    Hansen, Clifford W.; Martin, Curtis E.

    2015-08-01

    We report an uncertainty and sensitivity analysis for modeling AC energy from ph otovoltaic systems . Output from a PV system is predicted by a sequence of models. We quantify u ncertainty i n the output of each model using empirical distribution s of each model's residuals. We propagate uncertainty through the sequence of models by sampli ng these distributions to obtain a n empirical distribution of a PV system's output. We consider models that: (1) translate measured global horizontal, direct and global diffuse irradiance to plane - of - array irradiance; (2) estimate effective irradiance; (3) predict cell temperature; (4) estimate DC voltage, current and power ; (5) reduce DC power for losses due to inefficient maximum power point tracking or mismatch among modules; and (6) convert DC to AC power . O ur analysis consider s a notional PV system com prising an array of FirstSolar FS - 387 modules and a 250 kW AC inverter ; we use measured irradiance and weather at Albuquerque, NM. We found the uncertainty in PV syste m output to be relatively small, on the order of 1% for daily energy. We found that unce rtainty in the models for POA irradiance and effective irradiance to be the dominant contributors to uncertainty in predicted daily energy. Our analysis indicates that efforts to reduce the uncertainty in PV system output predictions may yield the greatest improvements by focusing on the POA and effective irradiance models.

  10. Adsorption of selected pharmaceuticals and an endocrine disrupting compound by granular activated carbon. 2. Model prediction

    SciTech Connect (OSTI)

    Yu, Z.; Peldszus, S.; Huck, P.M.

    2009-03-01

    The adsorption of two representative pharmaceutically active compounds (PhACs) naproxen and carbamazepine and one endocrine disrupting compound (EDC) nonylphenol was studied in pilot-scale granular activated carbon (GAC) adsorbers using post-sedimentation (PS) water from a full-scale drinking water treatment plant. The GAC adsorbents were coal-based Calgon Filtrasorb 400 and coconut shell-based PICA CTIF TE. Acidic naproxen broke through fastest while nonylphenol was removed best, which was consistent with the degree to which fouling affected compound removals. Model predictions and experimental data were generally in good agreement for all three compounds, which demonstrated the effectiveness and robustness of the pore and surface diffusion model (PSDM) used in combination with the time-variable parameter approach for predicting removals at environmentally relevant concentrations (i.e., ng/L range). Sensitivity analyses suggested that accurate determination of film diffusion coefficients was critical for predicting breakthrough for naproxen and carbamazepine, in particular when high removals are targeted. Model simulations demonstrated that GAC carbon usage rates (CURs) for naproxen were substantially influenced by the empty bed contact time (EBCT) at the investigated conditions. Model-based comparisons between GAC CURs and minimum CURs for powdered activated carbon (PAC) applications suggested that PAC would be most appropriate for achieving 90% removal of naproxen, whereas GAC would be more suitable for nonylphenol. 25 refs., 4 figs., 1 tab.

  11. 1000 Independence Avenue, SW, Washington, D.C., Carol G. Crawford, Chair,

    U.S. Energy Information Administration (EIA) (indexed site)

    FRIDAY, OCTOBER 25, 2002 The meeting was held at 8:30 in Room 8E-089 of the Department of Energy, 1000 Independence Avenue, SW, Washington, D.C., Carol G. Crawford, Chair, presiding. PRESENT: CAROL G. CRAWFORD, Ph.D. Chair F. JAY BREIDT, Ph.D. Vice Chair MARK BERNSTEIN, Ph.D. JOHNNY BLAIR JAE EDMONDS, Ph.D. JAMES K. HAMMITT, Ph.D. NICHOLAS W. HENGARTNER CALVIN A. KENT, Ph.D. WILLIAM G. MOSS, Ph.D. POLLY A. PHIPPS, Ph.D. RANDY R. SITTER, Ph.D. ROY WHITMORE, Ph.D. ALSO PRESENT: CALVIN A. KENT,

  12. The committee met in the Department of Energy Training

    U.S. Energy Information Administration (EIA) (indexed site)

    THURSDAY APRIL 19, 2001 The committee met in the Department of Energy Training Facility, 8th Floor, 950 L'Enfant Plaza, S.W., Washington, D.C., at 8:30 a.m., Carol A. Gotway Crawford, Ph.D., Chair, presiding. PRESENT: CAROL A. GOTWAY CRAWFORD, Ph.D., Chair F. JAY BREIDT, Ph.D., Vice Chair MARK BERNSTEIN, Ph.D. JOHNNY BLAIR MARK BURTON, Ph.D. THOMAS G. COWING, Ph.D. JAMES K. HAMMITT, Ph.D. NICOLAS HENGARTNER W. DAVID MONTGOMERY, Ph.D. WILLIAM G. MOSS, Ph.D. POLLY A. PHIPPS, Ph.D. RANDY R. SITTER,

  13. The committee met in the Department of Energy Training

    U.S. Energy Information Administration (EIA) (indexed site)

    FRIDAY APRIL 20, 2001 The committee met in the Department of Energy Training Facility, 8th Floor, 950 L'Enfant Plaza, S.W., Washington, D.C., at 8:30 a.m., Carol A. Gotway Crawford, Ph.D., Chair, presiding. PRESENT: CAROL A. GOTWAY CRAWFORD, Ph.D., Chair F. JAY BREIDT, Ph.D., Vice Chair MARK BERNSTEIN, Ph.D. JOHNNY BLAIR MARK BURTON, Ph.D. THOMAS G. COWING, Ph.D. JAMES K. HAMMITT, Ph.D. NICOLAS HENGARTNER W. DAVID MONTGOMERY, Ph.D. WILLIAM G. MOSS, Ph.D. POLLY A. PHIPPS, Ph.D. RANDY R. SITTER,

  14. The meeting was held at 8:30 in Room 8E-089 of the Department

    U.S. Energy Information Administration (EIA) (indexed site)

    THURSDAY, OCTOBER 24, 2002 The meeting was held at 8:30 in Room 8E-089 of the Department of Energy, 1000 Independence Avenue, S.W., Washington, D.C., Carol A. Gotway Crawford, Chair, presiding. PRESENT: CAROL A. GOTWAY CRAWFORD, Ph.D. Chair F. JAY BREIDT, Ph.D. Vice Chair MARK BERNSTEIN, Ph.D. JOHNNY BLAIR MARK BURTON, Ph.D. JAY EDMONDS, Ph.D. JAMES K. HAMMITT, Ph.D. NICHOLAS W. HENGARTNER WILLIAM G. MOSS, Ph.D. POLLY A. PHIPPS, Ph.D. RANDY R. SITTER, Ph.D. ROY WHITMORE, Ph.D. ENERGY INFORMATION

  15. British Photovoltaic Association | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Photovoltaic Association Jump to: navigation, search Name: British Photovoltaic Association Place: Milton Keynes, United Kingdom Zip: MK5 8NG Product: Trade body for the PV...

  16. Intec Power Holdings Ltd | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    NG6 0GA Sector: Buildings Product: String representation "Intec's "Silent ... control system." is too long. References: Intec Power Holdings Ltd1 This article is a stub. You...

  17. Alkane Energy Plc | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Kingdom Zip: NG21 9PR Sector: Services Product: Designs, builds, operates and services methane treatment and generation plants. Coordinates: 53.145962, -1.00554 Show Map...

  18. Doc...~En.

    Office of Legacy Management (LM)

    ... ..,,..,.... - .. I&i3:scD .::-:, TO-340 .":: ..' . - ' - -. ' . .." ,.. .;.. Very traly yours;, -' .X :, Doc...En. ' Br.:Re&ng ';;a' : , Div. Reading File ., ,, ., ,.-...

  19. Name of Project Pi(s)/Institution(s)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    2014 LBNL Predicting Ice Sheet and Climate Evolution at Extreme Scales (PISCEES) PIs: Stephen Price (LANL), Esmond Ng (LBNL) Institutions: LANL (PI), LBNL, ORNL, SNL, NCAR, UT,...

  20. Gas Cleaning for Remote Solid Oxide Fuel Cell (SOFC) Applications

    Energy.gov (indexed) [DOE]

    up for Fuel Cell Applications, Argonne National Lab Fuel (NG, LPG, LFG, ADG, APG, biodiesel) opportunities and impurity issues Gas Cleaning for Remote SOFC Applications Acumentrics ...

  1. Project: 1.8 MW Wind Turbine on Tribal Common Lands Near Lake...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    PAST ACTIVITIES & PROJECTS 1.8 MW Wind Turbine on Common Lands DOE First Steps Grant ... and Fossil Cattaraugus wind turbine project Repair and maintain NG ...

  2. A=11F (1985AJ01)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    5AJ01) (Not illustrated) These nuclei have not been observed: see (1980AJ01) and (1982NG01, 1983ANZQ

  3. A=11Ne (1985AJ01)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    5AJ01) (Not illustrated) These nuclei have not been observed: see (1980AJ01) and (1982NG01, 1983ANZQ

  4. Part 1 of 11

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... in this Schedule, the following documents are attached hereto and made a part of ... coupons , and other supporti ng documents for transportation services on which ...

  5. Comparative life-cycle air emissions of coal, domestic natural gas, LNG, and SNG for electricity generation

    SciTech Connect (OSTI)

    Paulina Jaramillo; W. Michael Griffin; H. Scott Matthews

    2007-09-15

    The U.S. Department of Energy (DOE) estimates that in the coming decades the United States' natural gas (NG) demand for electricity generation will increase. Estimates also suggest that NG supply will increasingly come from imported liquefied natural gas (LNG). Additional supplies of NG could come domestically from the production of synthetic natural gas (SNG) via coal gasification-methanation. The objective of this study is to compare greenhouse gas (GHG), SOx, and NOx life-cycle emissions of electricity generated with NG/LNG/SNG and coal. This life-cycle comparison of air emissions from different fuels can help us better understand the advantages and disadvantages of using coal versus globally sourced NG for electricity generation. Our estimates suggest that with the current fleet of power plants, a mix of domestic NG, LNG, and SNG would have lower GHG emissions than coal. If advanced technologies with carbon capture and sequestration (CCS) are used, however, coal and a mix of domestic NG, LNG, and SNG would have very similar life-cycle GHG emissions. For SOx and NOx we find there are significant emissions in the upstream stages of the NG/LNG life-cycles, which contribute to a larger range in SOx and NOx emissions for NG/LNG than for coal and SNG. 38 refs., 3 figs., 2 tabs.

  6. Participants

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Alok Choudhary Northwestern University Parallel IO Erich Strohmaier LBNL Computer Science & Performance Evaluation Esmond Ng LBNL Math Software Arie Shoshani LBNL Data and ...

  7. Map of Biomass Facilities | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    ng","group":"","inlineLabel":"","visitedicon":"","text":"

  8. PowerPoint Presentation

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... detection * Firewall (using iptables) * syslog-ng for logging communication * MySQL database on security historian * ssh for configuration access to devices * JavaOpenGL ...

  9. Melink Industries | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    to: navigation, search Name: Melink Corporation Address: 5140 River Valley Road Place: Milford, Ohio Zip: 45150 Product: String representation "Tests and balan ... ng idle periods"...

  10. Ground Source Solutions | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Kingdom Zip: NG22 9GW Sector: Buildings Product: UK-based installer of ground source energy systems to domestic and commercial buildings. References: Ground Source...

  11. Climate Human Capital | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Human Capital Jump to: navigation, search Name: Climate Human Capital Place: London, United Kingdom Zip: W1K 6NG Sector: Carbon, Renewable Energy, Services Product: Green executive...

  12. 11 CMS Exec Sum_update_1221.indd

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    turbines, electric vehicles, photovoltaic thin fi lms and energy-effi cient lighti ng. ... wind turbines, electric vehicles, photovoltaic thin fi lms and fl uorescent lighti ...

  13. DOE/EIA-0555(96)/1

    U.S. Energy Information Administration (EIA) (indexed site)

    to new Household Survey questions about availability u and participation in demand-side management (DSM) programs .vere evaluated by compar.ng them with responses to similar...

  14. 1

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ... JPL deployed three different airborne sensors: the Next Generation Airborne Visible and Infrared Imaging Spectrometer (AVIRIS-ng), the Hyperspectral Thermal Emission Spectrometer ...

  15. Table C. Dispenser, Hanging Hardware, Shear Valve, and Submersible Turbine

    Alternative Fuels and Advanced Vehicles Data Center

    C. Dispenser, Hanging Hardware, Shear Valve, and Submersible Turbine Pump Manufacturer Compatibility Manufacturers introduce and discontinue models over time. If you do not see your equipment on this list please contact the manufacturer. Manufacturer Product Model Ethanol Compatibility UL E25 and E85 Listed Equipment Gilbarco Dispenser An option on remote control dispenser Models NA0, NA1, NA2, NA3, NG1, NG6, NL0, NL1, NL2, and NL3. Models NG1, NG6, and NL0-NL3 are X+1 configurations where X is

  16. CBEI … Demonstrating On-bill Financing to Drive Deep Retrofits

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... Larger motor VSC, BEM * BTM-solar generation with energy storage * Demand response project: NG generation LED High Bay Building Energy Management system (BEM) * Update facility ...

  17. Innovative Materials Processing Technologies Ltd IMPT | Open...

    Open Energy Information (Open El) [EERE & EIA]

    Materials Processing Technologies Ltd IMPT Jump to: navigation, search Name: Innovative Materials Processing Technologies Ltd (IMPT) Place: United Kingdom Zip: NG1 1GF Sector:...

  18. AcqGuide4pt1.doc | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    - Quality Management FPDS-NG National Interest Action (NIA) Code to Track Procurement Actions Made in Support of the Pacific Earthquake and Tsunami Awardee Share in STRIPES

  19. QER Report: Energy Transmission, Storage, and Distribution Infrastruct...

    Energy.gov (indexed) [DOE]

    Chapter VII Appendix B NATURAL GAS NG-2 QER Report: Energy Transmission, Storage, and ... time horizon under consideration for the Quadrennial Energy Review). Increasing Demand. ...

  20. DOE MENTOR-PROTÉGÉ

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    business relationships between DOE prime contractors, small businesses and minority institutions of higher learning. ... Federal Procurement Data System -Next Generation (FPDS-NG) ...

  1. DOE MENTOR-PROTÉGÉ

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    business relationships between DOE prime contractors, small businesses and minority institutions of higher learning. ... Federal Procurement Data System-Next Generation (FPDS-NG) is ...

  2. Yorkshire Environmental Ltd | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Environmental Ltd Jump to: navigation, search Name: Yorkshire Environmental Ltd Place: Nottingham, United Kingdom Zip: NG2 3JH Product: Focuses on waste processing and...

  3. Tailored Materials Corp | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Zip: 85706 Sector: Carbon, Solar Product: String representation "Tailored Materi ... ng solar cells." is too long. References: Tailored Materials Corp1 This article is a stub....

  4. Geography-based structural analysis of the Internet

    SciTech Connect (OSTI)

    Kasiviswanathan, Shiva; Eidenbenz, Stephan; Yan, Guanhua

    2010-01-01

    In this paper, we study some geographic aspects of the Internet. We base our analysis on a large set of geolocated IP hop-level session data (including about 300,000 backbone routers, 150 million end hosts, and 1 billion sessions) that we synthesized from a variety of different input sources such as US census data, computer usage statistics, Internet market share data, IP geolocation data sets, CAJDA's Skitter data set for backbone connectivity, and BGP routing tables. We use this model to perform a nationwide and statewide geographic analysis of the Internet. Our main observations are: (1) There is a dominant coast-to-coast pattern in the US Internet traffic. In fact, in many instances even if the end-devices are not near either coast, still the traffic between them takes a long detour through the coasts. (2) More than half of the Internet paths are inflated by 100% or more compared to their corresponding geometric straight-line distance. This circuitousness makes the average ratio between the routing distance and geometric distance big (around 10). (3) The weighted mean hop count is around 5, but the hop counts are very loosely correlated with the distances. The weighted mean AS count (number of ASes traversed) is around 3. (4) The AS size and the AS location number distributions are heavy-tailed and strongly correlated. Most of the ASes are medium sized and there is a wide variability in the geographic dispersion size (measured in terms of the convex hull area) of these ASes.

  5. Solar Power

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Solar Power Solar Power Project Opportunities Abound in the Region The WIPP site is receives abundant solar energy with 6-7 kWh/sq meter power production potential As the accompanying map of New Mexico shows, the WIPP site enjoys abundant year-round sunshine. With an average solar power production potential of 6-7 kWh/sq meter per day, one exciting project being studied for location at WIPP is a 30-50 MW Solar Power Tower: The American Solar Energy Society (ASES) is is a national trade

  6. Small Business Resources

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Resources in Your Community Presented by: UMKC Missouri Small Business & Technology Development Center Kansas City, MO 2 A B est P rac+ce i s a ... Technique Method Process Ac2vity Incen2ve Reward ... that i s m ore e ffec+ve d elivering a par+cular outcome. 3 Best P rac+ce i s D efined a s... * the m ost e fficient (least a mount o f e ffort), * and m ost e ffec2ve (best r esults) ...method t o a ccomplish a t ask b ased o n... * repeatable p rocedures * proven p rocedures * over 2 me * for

  7. The Best and Brightest in Solar Homes Open to the Public

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    The Best and Brightest in Solar Homes Open to the Public For more information contact: e:mail: Public Affairs Golden, Colo., Oct. 1, 1997 -- The most innovative designs in passive and active solar homes in the Denver-metro area will be open to the public October 18 as part of the second annual Colorado Tour of Solar Homes. More than 20 homes with state-of-the-art solar technologies in the Denver-Boulder area are included in the tour, sponsored by the American Solar Energy Society (ASES) in

  8. The Brightest in Solar Homes to Shine in Public Tour

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Brightest in Solar Homes to Shine in Public Tour For more information contact: e:mail: Public Affairs Golden, Colo., Oct. 4, 1996 -- The most innovative solar homes in the Denver-metro area will be open to the public Oct. 19 as part of the National Solar Home Tour sponsored by the American Solar Eerrgy Society (ASES) in Boulder. The tour includes 16 homes that reflect a range of passive- and active-solar technologies, styles and costs, from energy self-sufficient "off the grid"

  9. F E

    Office of Legacy Management (LM)

    F E ," POST RmDIAL ACTION SURVEY PROPERTY OF MODERN LANDFILL, INC. FORMRR LOOW SITE LEWISTON. NEW YORK Prepared for U.S. Department of Energy J.D. Berger Project Staff R.D. C&dra C.P. Riemke P.W. Frame C.F. Weaver W.O. Eelton L.A. Young Prepared by Radiological Site Assessment Program Manpower 'Sducation. Research. and Training Division Oak Ridge Associated Uuiverbities Oak Ridge. Tennessee 37830 FINAL REPORT January 1982 This report is b,ased on wbrk performed under contract

  10. Parasitic oscillation suppression in solid state lasers using absorbing thin films

    DOE Patents [OSTI]

    Zapata, Luis E.

    1994-01-01

    A thin absorbing film is bonded onto at least certain surfaces of a solid state laser gain medium. An absorbing metal-dielectric multilayer film is optimized for a broad range of incidence angles, and is resistant to the corrosive/erosive effects of a coolant such as water, used in the forced convection cooling of the film. Parasitic oscillations hamper the operation of solid state lasers by causing the decay of stored energy to amplified rays trapped within the gain medium by total and partial internal reflections off the gain medium facets. Zigzag lasers intended for high average power operation require the ASE absorber.

  11. Parasitic oscillation suppression in solid state lasers using absorbing thin films

    DOE Patents [OSTI]

    Zapata, L.E.

    1994-08-02

    A thin absorbing film is bonded onto at least certain surfaces of a solid state laser gain medium. An absorbing metal-dielectric multilayer film is optimized for a broad range of incidence angles, and is resistant to the corrosive/erosive effects of a coolant such as water, used in the forced convection cooling of the film. Parasitic oscillations hamper the operation of solid state lasers by causing the decay of stored energy to amplified rays trapped within the gain medium by total and partial internal reflections off the gain medium facets. Zigzag lasers intended for high average power operation require the ASE absorber. 16 figs.

  12. Ex Parte discussion of commercial fan and blower rulemaking | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy discussion of commercial fan and blower rulemaking Ex Parte discussion of commercial fan and blower rulemaking On November 3rd, Jordan Doria, Manager of Stakeholder Engagement, Ingersoll Rand, convened a teleconference with John Cymbalsky and Daniel Cohen of DOE. IR_ex_parte_discussion_3NOV2014 (101.77 KB) More Documents & Publications Meeting Summary Memo Ex Parte Communications, Docket Number EERE-2008-BT-STD-0005, RIN 1904-AB57 ASE/CAGI Meeting about Compressors and Compressed

  13. trinity-aa-use-case-v1.2a

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Trinity Use Case Scenarios ( SAND 2 013---2941 P U nclassified, U nlimited R elease) Page 1 of 9 Trinity / N ERSC---8 U se C ase S cenarios April 5 , 2 013 This d ocument p rovides a dditional v iews o f a nticipated u sage s cenarios f or t wo o f the a dvanced a rchitecture f eatures o f T rinity, t he b urst b uffer a nd p ower/energy measurement a nd c ontrol. T his d ocument m ay c hange as our understanding of needs a nd t echnologies e volves. T hese scenarios are not intended to include

  14. PowerPoint Presentation

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Chris Kemp, Deputy Federal Project Director , Tank Retrieval & Closure U.S. Department of Energy, Office of River Protection Hanford Tank Farms Update 7 0 TANKS UNDER REVIEW 16 TANKS RETRIEVED 2 TANKS IN RETRIEVAL 4 TANKS IN CONSTRUCTION 241- -S S- -1 112 a an nd d241 1- -S S- -1 102 Pha ase 1 1 241- -SY- -1 102 W Wa aterS Supply ly Distribution FromS SY YFarm Skid Water Distribution Skid S Sludge S Sa altca ak k e e 241- -S S- -F Farm Supernate S So olid lids s Rise er r E Ex xtension

  15. Requirements for Parallel I/O,

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Requirements for Parallel I/O, ! Visualization and Analysis Prabhat 1 , Q uincey K oziol 2 1 LBL/NERSC 2 The H DF G roup NERSC A SCR R equirements f or 2 017 January 1 5, 2 014 LBNL 1. Project Description! * m636 r epo * LBL V is B ase P rogram ( Bethel P I) [ PM: N owell] * Conduct f undamental a nd a pplied vis/analyEcs R &D t o address e xascale c hallenges * ExaHDF5 P roject ( Prabhat, Q uincey P Is) [ PM: Nowell] * Scale P arallel I /O, a nd d ata m anagement t echnologies f or current

  16. Method and system for edge cladding of laser gain media

    DOE Patents [OSTI]

    Bayramian, Andrew James; Caird, John Allyn; Schaffers, Kathleen Irene

    2014-03-25

    A gain medium operable to amplify light at a gain wavelength and having reduced transverse ASE includes an input surface and an output surface opposing the input surface. The gain medium also includes a central region including gain material and extending between the input surface and the output surface along a longitudinal optical axis of the gain medium. The gain medium further includes an edge cladding region surrounding the central region and extending between the input surface and the output surface along the longitudinal optical axis of the gain medium. The edge cladding region includes the gain material and a dopant operable to absorb light at the gain wavelength.

  17. NERSCtalk-gluex-5-2011.ppt

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    J lab@12GeV P hysics E xperiments ] Richard J ones GlueX 1. JLab@12GeV E xperiments C ase S tudy: O verview H alls A , B ( CLAS12), C , D ( GlueX) NERSC---NP W orkshop, Bethesda, M ay 2 6---27, 2 011 3 1. GlueX - t he s cience NERSC---NP W orkshop, Bethesda, M ay 2 6---27, 2 011 4 1. GlueX - t he c ollabora0on  University of Athens  Carnegie Mellon University  Catholic University  Christopher Newport University  University of Connecticut  Florida International University 

  18. W

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Computer-Based Procedures for Workers in the Field Johanna Oxstrand Advanced Sensors and Instrumentation 2015 NE I&C Review October 29 th , 2015 Computer-Based Procedures (CBPs) Research O bjec,ves * Define d esign r equirements * Streamline a nd d is<ll i nforma<on * Use d ynamic p resenta<on t o: - Increase e fficiency - Improve t he e ase o f u se - Reduce o pportuni<es f or e rrors - Incorporate h uman p erformance tools * We d o NOT d emonstrate h ow t o convert a p rocedure

  19. The Committee met in Conference Room 8E-089 in the Forrestal

    U.S. Energy Information Administration (EIA) (indexed site)

    THURSDAY APRIL 13, 2000 + + + + + The Committee met in Conference Room 8E-089 in the Forrestal Building at 10th Street and Independence Avenue, S.W., Washington, D.C., at 8:30 a.m., Carol Gotway Crawford, Chair, presiding. PRESENT: CAROL A. GOTWAY CRAWFORD, PhD Chair JAY BREIDT, PhD Member THOMAS G. COWING, PhD Member CALVIN A. KENT, PhD Member W. DAVID MONTGOMERY, PhD Member WILLIAM G. MOSS, PhD Member POLLY A. PHIPPS, PhD Member RANDY R. SITTER, PhD Member ROY WHITMORE, PhD Member JOHNNY

  20. Adsorption of selected pharmaceuticals and an endocrine disrupting compound by granular activated carbon. 1. Adsorption capacity and kinetics

    SciTech Connect (OSTI)

    Yu, Z.; Peldszus, S.; Huck, P.M.

    2009-03-01

    The adsorption of two representative PhACs (naproxen and carbamazepine) and one EDC (nonylphenol) were evaluated on two granular activated carbons (GAC) namely coal-based Calgon Filtrasorb 400 and coconut shell-based PICA CTIF TE. The primary objective was to investigate preloading effects by natural organic matter (NOM) on adsorption capacity and kinetics under conditions and concentrations (i.e., ng/L) relevant for drinking water treatment. Isotherms demonstrated that all compounds were significantly negatively impacted by NOM fouling. Adsorption capacity reduction was most severe for the acidic naproxen, followed by the neutral carbamazepine and then the more hydrophobic nonylphenol. The GAC with the wider pore size distribution had considerably greater NOM loading, resulting in lower adsorption capacity. Different patterns for the change in Freundlich KF and 1/n with time revealed different competitive mechanisms for the different compounds. Mass transport coefficients determined by short fixed-bed (SFB) tests with virgin and preloaded GAC demonstrated that film diffusion primarily controls mass transfer on virgin and preloaded carbon. Naproxen suffered the greatest deteriorative effect on kinetic parameters due to preloading, followed by carbamazepine, and then nonylphenol. A type of surface NOM/biofilm, which appeared to add an additional mass transfer resistance layer and thus reduce film diffusion, was observed. In addition, electrostatic interactions between NOM/biofilm and the investigated compounds are proposed to contribute to the reduction of film diffusion. A companion paper building on this work describes treatability studies in pilot-scale GAC adsorbers and the effectiveness of a selected fixed-bed model. 32 refs., 3 figs., 2 tabs.