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1

Laboratori Nazionali del Gran Sasso ENVIRONMENTAL POLICY  

E-Print Network [OSTI]

employment of resources, connected to the main aspects, such as water, energy and waste management as well and the other involved parties must cooperate, as much as possible, to improve the Environmental ManagementLaboratori Nazionali del Gran Sasso ENVIRONMENTAL POLICY The Gran Sasso National Laboratory (LNGS

2

VI-1 PAPERS PUBLISHED  

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

148030ENAS%206038.pdf. A new detection system for very low-energy protons from -delayed p-decay, A. Spiridon, Proceedings of VI European Summer School on Experimental...

3

CERN Neutrinos to Gran Sasso (CNGS) First Beam  

E-Print Network [OSTI]

The CNGS, CERN Neutrinos to Gran Sasso project, aims at directly detecting muon-neutrino to tau-neutrino oscillations. An intense muon-neutrino beam (10 to the 17 muon neutrinos)is generated at CERN per day and directed towards the Gran Sasso National Laboratory, LNGS, in Italy, 732 km away from CERN. In LNGS large and complex detectors will allow to detect, in particular, the rare tau-neutrinos created by â??oscillation' from muon-neutrinos on their way between CERN and LNGS. On average around three tau-neutrino events are predicted per year in each of the ~2000 ton detectors. The construction of the CNGS beam facility started in September 2000, and the first neutrino beam has been produced in July 2006. In the presently approved physics programme, it is foreseen to run the facility for five years.

Gschwendtner, E

2006-01-01T23:59:59.000Z

4

LABORATORY VI ELECTRICITY FROM MAGNETISM  

E-Print Network [OSTI]

LABORATORY VI ELECTRICITY FROM MAGNETISM Lab VI - 1 In the previous problems you explored by electric currents. This lab will carry that investigation one step further, determining how changing magnetic fields can give rise to electric currents. This is the effect that allows the generation

Minnesota, University of

5

LABORATORY VI ELECTRICITY FROM MAGNETISM  

E-Print Network [OSTI]

LABORATORY VI ELECTRICITY FROM MAGNETISM Lab VI - 1 In the previous problems you explored the magnetic field and its effect on moving charges. You also saw how electric currents could create magnetic can give rise to electric currents. This is the effect that allows the generation of electricity

Minnesota, University of

6

E-Print Network 3.0 - anaerobios gran negativos Sample Search...  

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

los problemas de programacin que estudiaremos de ahora en adelante podemos Summary: creatividad. Sin embargo, una gran cantidad de problemas de programacin pueden ser resueltos...

7

Microbial Reduction of Intragrain U(VI) in Contaminated Sediment...  

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

Intragrain U(VI) in Contaminated Sediment. Microbial Reduction of Intragrain U(VI) in Contaminated Sediment. Abstract: The accessibility of precipitated, intragrain U(VI) in a...

8

Chapter VI Conclusion and Suggestions Chapter VIChapter VIChapter VIChapter VI  

E-Print Network [OSTI]

design for low cost, short range, low data rate and dense WSN application. Because of its low-cost are presented for future works. VI.1 Conclusion This work is an attempt toward low-power mm-wave transceiver of the fabricated LNA showed that this noise model can describe the noise behaviour of the transistors with good

Paris-Sud XI, Université de

9

Vi har fet et Det flles kursus har  

E-Print Network [OSTI]

offentlige tilskud. Det stiller krav til at vi laver modeller, der er mere dynamiske end vi er vant til inden

10

s1, s2, . . . , sN vi = ai, i = i/vi, i = i/vi,  

E-Print Network [OSTI]

¹ ¹ vi = ai, i = i/vi, i = i/vi, xi = vi cos i cos i yi = vi sin i zi = vi cos i sin i amin ai(t) amax(t) i¹ ´ µ amin amax¸ max max ¹ º º þ º ¹ i¹ xri = xi + xdi cos i cos i - ydi cos i - zdi sin i cos i]T ¸ Ni i¹ ¸ rd R3 ¸ ¹ ¸ k > 0 º þ ¿ º º ý þ ¹ ¹ º º ¹ ¹ º ½ � � � º¸ � Ý���¹ ���� �º ��Ð� �� �Ý�� �� Ð

Granichin, Oleg

11

Appendix VI Corrective Action Strategy  

National Nuclear Security Administration (NNSA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartmentNationalRestart of the Review of theOFFICEACME | NationalTbilisi | AvailableVI

12

Downstream variations in the width of bedrock channels David R. Montgomery and Karen B. Gran  

E-Print Network [OSTI]

Downstream variations in the width of bedrock channels David R. Montgomery and Karen B. Gran the Mokelumne River show that bedrock channel width decreases substantially downstream at the contact between show systematic channel widening after flood flows and debris flow impacts. We conclude that downstream

Montgomery, David R.

13

Results on Dark Matter and beta beta decay modes by DAMA at Gran Sasso  

E-Print Network [OSTI]

DAMA is an observatory for rare processes and it is operative deep underground at the Gran Sasso National Laboratory of the I.N.F.N. (LNGS). Here some arguments will be presented on the investigation on dark matter particles by annual modulation signature and on some of the realized double beta decay searches.

R. Bernabei

2007-05-21T23:59:59.000Z

14

LABORATORY VI ENERGY AND THERMAL PROCESSES  

E-Print Network [OSTI]

LABORATORY VI ENERGY AND THERMAL PROCESSES Lab VI - 1 The change of the internal energy of a system temperature. In this lab you will concentrate on quantifying the changes in internal energy within the framework of conservation of energy. In the problems of this lab, you will master the relation

Minnesota, University of

15

The Radiolysis of AmVI Solutions  

SciTech Connect (OSTI)

The reduction of bismuthate-produced AmVI by 60Co gamma-rays was measured using post-irradiation UV/Vis spectroscopy. The reduction of AmVI by radiolysis was rapid, producing AmV as the sole product. Relatively low absorbed doses in the ~0.3 kGy range quantitatively reduced a solution of 2.5 x 10-4 M AmVI. The addition of bismuthate to samples during irradiation did not appear to protect AmVI from radiolytic reduction during these experiments. It was also shown here that AmV is very stable toward radiation. The quantitative reduction of the AmVI concentration here corresponds to 1.4 hours of exposure to a process solution, however the actual americium concentrations will be higher and the expected contact times short when using centrifugal contactors. Thus, the reduction rate found in these initial experiments may not be excessive.

Bruce J. Mincher

2013-06-01T23:59:59.000Z

16

Determining Individual Mineral Contributions To U(VI) Adsorption...  

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

Individual Mineral Contributions To U(VI) Adsorption In A Contaminated Aquifer Sediment: A Fluorescence Spectroscopy Determining Individual Mineral Contributions To U(VI)...

17

Molecular Interactions of Plutonium(VI) with SyntheticManganese...  

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

Interactions of Plutonium(VI) with Synthetic Manganese-Substituted Goethite. Molecular Interactions of Plutonium(VI) with Synthetic Manganese-Substituted Goethite. Abstract:...

18

VI Congreso de CEISAL: Independencias Dependencias Interdependencias  

E-Print Network [OSTI]

1 VI Congreso de CEISAL: Independencias ­ Dependencias ­ Interdependencias Toulouse, 30 de Junio al avances del bloque hacia la integración. Esa tendencia no se contradice con la existencia de determinados

Paris-Sud XI, Université de

19

FINAL DRAFT VI. Application 3: Recruitment Prediction  

E-Print Network [OSTI]

FINAL DRAFT 106 VI. Application 3: Recruitment Prediction Contributors: S. Sarah Hinckley, Bernard Megrey, Thomas Miller Definition What do we mean by recruitment prediction? The first thing to consider in defining this term is the time horizon of the prediction. Short-term predictions mean the use of individual

Miller, Tom

20

Measurement of the energy spectrum of underground muons at Gran Sasso with a transition radiation detector  

E-Print Network [OSTI]

We have measured directly the residual energy of cosmic ray muons crossing the MACRO detector at the Gran Sasso Laboratory. For this measurement we have used a transition radiation detector consisting of three identical modules, each of about 12 m^2 area, operating in the energy region from 100 GeV to 1 TeV. The results presented here were obtained with the first module collecting data for more than two years. The average single muon energy is found to be 320 +/- 4 (stat.) +/- 11 (syst.) GeV in the rock depth range 3000-6500 hg/cm^2. The results are in agreement with calculations of the energy loss of muons in the rock above the detector.

The MACRO Collaboration; M. Ambrosio et al

1998-07-09T23:59:59.000Z

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


21

U(VI) reduction to mononuclear U(VI) by desulfitobacterium spp.  

SciTech Connect (OSTI)

The bioreduction of U(VI) to U(IV) affects uranium mobility and fate in contaminated subsurface environments and is best understood in Gram-negative model organisms such as Geobacter and Shewanella spp. This study demonstrates that U(VI) reduction is a common trait of Gram-positive Desulfitobacterium spp. Five different Desulfitobacterium isolates reduced 100 {mu}M U(VI) to U(IV) in <10 days, whereas U(VI) remained soluble in abiotic and heat-killed controls. U(VI) reduction in live cultures was confirmed using X-ray absorption near-edge structure (XANES) analysis. Interestingly, although bioreduction of U(VI) is almost always reported to yield the uraninite mineral (UO{sub 2}), extended X-ray absorption fine structure (EXAFS) analysis demonstrated that the U(IV) produced in the Desulfitobacterium cultures was not UO{sub 2}. The EXAFS data indicated that the U(IV) product was a phase or mineral composed of mononuclear U(IV) atoms closely surrounded by light element shells. This atomic arrangement likely results from inner-sphere bonds between U(IV) and C/N/O- or P/S-containing ligands, such as carbonate or phosphate. The formation of a distinct U(IV) phase warrants further study because the characteristics of the reduced material affect uranium stability and fate in the contaminated subsurface.

Fletcher, K. E.; Boyanov, M. I.; Thomas, S. H.; Wu, Q.; Kemner, K. M.; Loffler, F. E. (Biosciences Division); (Georgia Inst. of Tech.)

2010-06-15T23:59:59.000Z

22

Texas Rice, Volume VI, Number 7  

E-Print Network [OSTI]

Texas A&M University System Agricultural Research and Extension Center Beaumont, Texas September 2006 Volume VI Number 7 Texas A Tribute to Henry M. “Hank” Beachell Henry Monroe Beachell, co- recipient of the 1996 World Food Prize... was the need for additional research, particularly addressing the development of rice varieties that compete more effectively with weed species, and the development of improved weed and fertilizer management options. The U.S. organic market is projected...

23

DeMEASS VI Conference Ede, the Netherlands  

E-Print Network [OSTI]

DeMEASS VI Conference Ede, the Netherlands May 26-28, 2014 A Hybrid Trailing Edge Control Surface, YANG, GÃ?RSES, AHN, Ã?ZGEN, YAMAN 2/23 DeMEASS VI Conference Ede, the Netherlands May 26-28, 2014, Ã?ZGEN, YAMAN DeMEASS VI Conference Ede, the Netherlands May 26-28, 2014 A Hybrid Trailing Edge Control

Yaman, Yavuz

24

Air quality VI details environmental progress  

SciTech Connect (OSTI)

A report is given of the International Conference on Air Quality VI where key topics discussed were control of mercury, trace elements, sulphur trioxide and particulates. This year a separate track was added on greenhouse gas reduction, with panels on greenhouse gas policy and markets, CO{sub 2} capture and sequestration, and monitoring, mitigation and verification. In keynote remarks, NETL Director Carl Bauer noted that emissions have gone down since 1990 even though coal consumption has increased. The conference provided an overview of the state-of-the-science regarding key pollutants and CO{sub 2}, the corresponding regulatory environment, and the technology readiness of mitigation techniques. 1 photo.

NONE

2007-12-31T23:59:59.000Z

25

Blue Canyon VI | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarre BiomassTHIS PAGE ISJump to:BlackfeetBreezes I &VI Jump

26

Integrated Ecogenomics Study for Bioremediation of Cr(VI) at Hanford 100H Area  

E-Print Network [OSTI]

reducer isolated from the Hanford 100H site capable of Iron(study for bioremediation of Cr(VI) at Hanford 100H area RomyVI)contamination at Hanford ?? Cr(VI) highly soluble, toxic

Chakraborty, Romy

2008-01-01T23:59:59.000Z

27

KENO-VI Primer: A Primer for Criticality Calculations with SCALE/KENO-VI Using GeeWiz  

SciTech Connect (OSTI)

The SCALE (Standardized Computer Analyses for Licensing Evaluation) computer software system developed at Oak Ridge National Laboratory is widely used and accepted around the world for criticality safety analyses. The well-known KENO-VI three-dimensional Monte Carlo criticality computer code is one of the primary criticality safety analysis tools in SCALE. The KENO-VI primer is designed to help a new user understand and use the SCALE/KENO-VI Monte Carlo code for nuclear criticality safety analyses. It assumes that the user has a college education in a technical field. There is no assumption of familiarity with Monte Carlo codes in general or with SCALE/KENO-VI in particular. The primer is designed to teach by example, with each example illustrating two or three features of SCALE/KENO-VI that are useful in criticality analyses. The primer is based on SCALE 6, which includes the Graphically Enhanced Editing Wizard (GeeWiz) Windows user interface. Each example uses GeeWiz to provide the framework for preparing input data and viewing output results. Starting with a Quickstart section, the primer gives an overview of the basic requirements for SCALE/KENO-VI input and allows the user to quickly run a simple criticality problem with SCALE/KENO-VI. The sections that follow Quickstart include a list of basic objectives at the beginning that identifies the goal of the section and the individual SCALE/KENO-VI features that are covered in detail in the sample problems in that section. Upon completion of the primer, a new user should be comfortable using GeeWiz to set up criticality problems in SCALE/KENO-VI. The primer provides a starting point for the criticality safety analyst who uses SCALE/KENO-VI. Complete descriptions are provided in the SCALE/KENO-VI manual. Although the primer is self-contained, it is intended as a companion volume to the SCALE/KENO-VI documentation. (The SCALE manual is provided on the SCALE installation DVD.) The primer provides specific examples of using SCALE/KENO-VI for criticality analyses; the SCALE/KENO-VI manual provides information on the use of SCALE/KENO-VI and all its modules. The primer also contains an appendix with sample input files.

Bowman, Stephen M [ORNL

2008-09-01T23:59:59.000Z

28

NUREG/CR-6911 Tests of Uranium (VI) Adsorption  

E-Print Network [OSTI]

NUREG/CR-6911 Tests of Uranium (VI) Adsorption Models in a Field Setting U.S. Geological Survey U/CR-6911 Tests of Uranium (VI) Adsorption Models in a Field Setting Manuscript Completed: August 2006 Date Published: August 2006 Prepared by G. P. Curtis, J. A. Davis Water Resources Division U.S. Geological Survey

29

Identification of simultaneous U(VI) sorption complexes and U...  

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

conditions under which U (VI)-CO3-Ca complexes inhibit U reduction. Citation: Singer DM, SME Chatman, ES Ilton, KM Rosso, JF Banfield, and G Waychunas.2012."Identification of...

30

Uranium(VI) Diffusion in Low-Permeability Subsurface Materials...  

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

Abstract: Uranium(VI) diffusion was investigated in a fine-grained saprolite sediment that was collected from U.S. Department of Energy (DOE) Oak Ridge site, TN, where...

31

Building on lessons learned : too high hopes without HOPE VI?  

E-Print Network [OSTI]

By providing substantial grants to public housing authorities to demolish and rebuild distressed public housing and provide services to public housing residents, the HOPE VI program has helped transform these developments ...

Wang, Kristen J

2006-01-01T23:59:59.000Z

32

VIM: Initial ENDF/B-VI experience  

SciTech Connect (OSTI)

The VIM Monte Carlo particle transport code uses detailed continuous-energy cross sections produced from ENDF/B data by a set of specialized codes developed or adapted for use at Argonne National Laboratory. ENDF/B-IV data were used until about 1979, and Version V data since then. These VIM libraries were extensively benchmarked against the MC{sup 2}-2 code and against ZPR and ZPPR criticals for fast spectrum calculations, as well as other fast and thermal experiments and calculations. Recently, the cross section processing codes have been upgraded to accommodate ENDF/B-VI files, and a small library has been tested. Several fundamental tasks comprise the construction of a faithful representation of ENDF data for VIM calculations: (1) The resolved resonance parameters are converted to Doppler-broadened continuous-energy cross sections with energy grids suitable for linear-linear interpolation. (2) The unresolved resonance parameter distributions are sampled to produce many (40-400) resonance ladders in each energy band. These are converted to Doppler-broadened continuous energy resonance cross sections that are then binned by cross section, accumulating ladders until statistical convergence, the result being probability tables of total cross sections and conditional mean scattering and fission cross sections. VIM samples these tables at run time, and File 3 back ground cross sections are added. (3) Anisotropic angular distribution data are converted to angular probability tables. All other ENDF data are unmodified, except for format.

Blomquist, R.N.

1997-08-01T23:59:59.000Z

33

Interstellar O VI in the Large Magellanic Cloud  

E-Print Network [OSTI]

I summarize Far Ultraviolet Spectroscopic Explorer (FUSE) observations of interstellar O VI absorption towards 12 early-type stars in the Large Magellanic Cloud (LMC), the closest disk galaxy to the Milky Way. LMC O VI is seen towards all 12 stars with properties (average column densities, kinematics) very similar to those of the Milky Way halo, even though O/H in the LMC is lower by a factor of ~2.5. Sight lines projected onto known LMC superbubbles show little enhancement in O VI column density compared to sight lines towards quiescent regions of the LMC. The O VI absorption is displaced by \\~-30 km/sec from the corresponding low-ionization absorption associated with the bulk of the LMC gas. The LMC O VI most likely arises in a vertically-extended distribution, and I discuss the measurements in the context of a halo composed of radiatively-cooling hot gas. In this case, the mass-flow rate from one side of the LMC disk is of the order 1 solar mass/yr.

J. Christopher Howk

2001-09-14T23:59:59.000Z

34

Om du vill f en skymt av barkborrarna eller deras runristarlika spr, g ut i granskogen. P gammal gran och tall kan du frsiktigt plocka ls barkbitar,  

E-Print Network [OSTI]

Om du vill få en skymt av barkborrarna eller deras runristarlika spår, gå ut i granskogen. På gammal gran och tall kan du försiktigt plocka lös barkbitar, för att där under hitta spåren efter bita sig in i en nyfallen gran. Väl inne i barken börjar vår man att fisa ­ vad nu? Han förvandlar

35

Energy and momentum of Bianchi Type VI_h Universes  

E-Print Network [OSTI]

We obtain the energy and momentum of the Bianchi type VI_h universes using different prescriptions for the energy-momentum complexes in the framework of general relativity. The energy and momentum of the Bianchi VI_h universe are found to be zero for the parameter h = -1 of the metric. The vanishing of these results support the conjecture of Tryon that Universe must have a zero net value for all conserved quantities.This also supports the work of Nathan Rosen with the Robertson-Walker metric. Moreover, it raises an interesting question: "Why h=-1 case is so special?"

S. K. Tripathy; B. Mishra; G. K. Pandey; A. K. Singh; T. Kumar; S. S. Xulu

2015-01-19T23:59:59.000Z

36

Energy and momentum of Bianchi Type VI_h Universes  

E-Print Network [OSTI]

We obtain the energy and momentum of the Bianchi type VI_h universes using different prescriptions for the energy-momentum complexes in the framework of general relativity. The energy and momentum of the Bianchi VI_h universe are found to be zero for the parameter h = -1 of the metric. The vanishing of these results support the conjecture of Tryon that Universe must have a zero net value for all conserved quantities.This also supports the work of Nathan Rosen with the Robertson-Walker metric. Moreover, it raises an interesting question: "Why h=-1 case is so special?"

Tripathy, S K; Pandey, G K; Singh, A K; Kumar, T; Xulu, S S

2015-01-01T23:59:59.000Z

37

Nitrate Enhanced Microbial Cr(VI) Reduction-Final Report  

SciTech Connect (OSTI)

A major challenge for the bioremediation of radionuclides (i.e., uranium, technetium) and metals (i.e., Cr(VI), Hg) is the co-occurrence of nitrate as it can inhibit metal transformation. Denitrification (nitrate reduction to dinitrogen gas) is considered the most important ecological process. For many metal and metalloid reducing bacteria, however, ammonia is the end product through respiratory nitrate reduction (RNRA). The focus of this work was to determine how RNRA impacts Cr(VI) transformation. The goal was to elucidate the specific mechanism(s) that limits Cr(VI) reduction in the presence of nitrate and to use this information to develop strategies that enhance Cr(VI) reduction (and thus detoxification). Our central hypothesis is that nitrate impacts the biotransformation of metals and metalloids in three ways 1) as a competitive alternative electron acceptor (inhibiting transformation), 2) as a co-metabolite (i.e., concomitant reduction, stimulating transformation), and 3) as an inducer of specific proteins and pathways involved in oxidation/reduction reactions (stimulating transformation). We have identified three model organisms, Geobacter metallireducens (mechanism 1), Sulfurospirillum barnesii, (mechasism 2), and Desulfovibrio desulfuricans (mechanisms 3). Our specific aims were to 1) investigate the role of Cr(VI) concentration on the kinetics of both growth and reduction of nitrate, nitrite, and Cr(VI) in these three organisms; 2) develop a profile of bacterial enzymes involved in nitrate transformation (e.g., oxidoreductases) using a proteomic approach; 3) investigate the function of periplasmic nitrite reductase (Nrf) as a chromate reductase; and 4) develop a strategy to maximize microbial chromium reduction in the presence of nitrate. We found that growth on nitrate by G. metallireducens was inhibited by Cr(VI). Over 240 proteins were identified by LC/MS-MS. Redox active proteins, outer membrane heavy metal efflux proteins, and chemotaxis sensory proteins (Gmet_2478 and Gmet_1641) were up-regulated with exposure to Cr(VI). A nine-heme cytochrome C was purified that could reduce nitrite and could be oxidized by Cr(VI). For D. desulfuricans, we found that confirmed that Cr(VI) induced a prolonged lag period when Cr(VI) was reduced. Over three hundred proteins were unequivocally identified by LC/MS-MS and a significant number of down-regulated proteins for which the levels were changed >2 fold compared to control. Sulfite reductase levels were similar, however, nitrate and nitrite reductase were down-regulated. The supernatant of spent cultures was found to contain a filterable, heat stable compound that rapidly reduced Cr(VI). In addition, desulfoviridin was purified from nitrate grown cells and shown to have nitrite reductase activity that was inhibited by Cr(VI). For S. barnesii, periplasmic nitrate reductase (Nap), nitrite reductase (Nrf), and the metalloid reductase (Rar) were purified and characterized. The supernatant of spent cultures was also found to contain a filterable, heat stable compound that rapidly reduced Cr(VI) but that Rar also reduced Cr(VI). Our results from specific aims 1 through 3 indicate that for G. metallireducens, Cr(VI) inhibits nitrate respiration as it oxidizes cytochromes involved in nitrate respiration. Iron reduction is apparently not affected and the inhibitory affects of Cr(VI) may be attenuated by the addition of sufficient Fe(III) to generate Fe(II) that abiotically reduces the chromium. For S. barnesii, although the enzyme assays indicate that the components of the respiratory pathway for nitrate (e.g. Nap and Nrf) are inhibited by chromate, the organism has a mechanism to prevent this from actually occurring. Our current hypothesis is that the non-specific metalloid reductase (Rar) is providing resistance by reducing the Cr(VI). The strategy here would be to enhance its growth and metabolism in the natural setting. Lactate is a suitable electron donor for S. barnesii but other donors are possible. Although the version of the Phylochip used for monitoring the microb

John F. Stolz

2011-06-15T23:59:59.000Z

38

Realities and perceptions : HOPE VI poverty deconcentration and implications for broader neighborhood revitalization  

E-Print Network [OSTI]

HOPE VI was developed in 1992 as program to demolish and revitalize the nation's most severely distressed public housing. One element of the HOPE VI program is to move low-income households out of an environment of ...

Vanderford, Carrie Ann

2006-01-01T23:59:59.000Z

39

E-Print Network 3.0 - air pollution vi Sample Search Results  

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

vi Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution vi Page: << < 1 2 3 4 5 > >> 1 Air Pollution Physics and Chemistry EAS 6790...

40

Accelerated Publications Three-Dimensional Structure of DesVI from Streptomyces Venezuelae: A Sugar  

E-Print Network [OSTI]

Accelerated Publications Three-Dimensional Structure of DesVI from Streptomyces Venezuelae: A Sugar for the biosynthesis of dTDP-desosamine in Streptomyces Venezuelae, with the last step catalyzed by DesVI, an N

Holden, Hazel

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


41

E-Print Network 3.0 - assessment methods vi Sample Search Results  

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

porous media. Materials and Methods Experimental... Effects of Solid-to-Solution Ratio on Uranium(VI) Adsorption and Its Implications T A O C H E N G... , Wisconsin 53706 U(VI)...

42

E-Print Network 3.0 - appendix vi calculation Sample Search Results  

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

facility, calculations showing compliance... ) (D) (vi) The noise emission abatement system; Appendix B (h) ... Source: California Energy Commission Collection: Energy...

43

Contribution of Extracellular Polymeric Substances from Shewanella sp. HRCR-1 Biofilms to U(VI) Immobilization  

SciTech Connect (OSTI)

The goal of this study was to quantify the contribution of extracellular polymeric substances (EPS) in U(VI) immobilization by Shewanella sp. HRCR-1. Through comparison of U(VI) immobilization using cells with bound EPS (bEPS) and cells without EPS, we showed that i) bEPS from Shewanella sp. HRCR-1 biofilms contributed significantly to U(VI) immobilization, especially at low initial U(VI) concentrations, through both sorption and reduction; ii) bEPS could be considered as a functional extension of the cells for U(VI) immobilization and they likely play more important roles at initial U(VI) concentrations; and iii) U(VI) reduction efficiency was found to be dependent upon initial U(VI) concentration and the efficiency decreased at lower concentrations. To quantify relative contribution of sorption and reduction in U(VI) immobilization by EPS fractions, we isolated loosely associated EPS (laEPS) and bEPS from Shewanella sp. HRCR-1 biofilms grown in a hollow fiber membrane biofilm reactor and tested their reactivity with U(V). We found that, when in reduced form, the isolated cell-free EPS fractions could reduce U(VI). Polysaccharides in the EPS likely contributed to U(VI) sorption and dominated reactivity of laEPS while redox active components (e.g., outer membrane c-type cytochromes), especially in bEPS, might facilitate U(VI) reduction.

Cao, Bin; Ahmed, B.; Kennedy, David W.; Wang, Zheming; Shi, Liang; Marshall, Matthew J.; Fredrickson, Jim K.; Isern, Nancy G.; Majors, Paul D.; Beyenal, Haluk

2011-06-05T23:59:59.000Z

44

Diplomatic Metonymy and Antithesis in 3 Henry VI  

E-Print Network [OSTI]

love that leads inevitably from corporeal ‘feeble shadow’ (al corpo una debil umbra) to the soul’s immaterial and divine ‘substance’ (sustanzia).44 In other words, Camilla sceptically suspects a world like that of the Henry VI plays, a world of obscured...

Craigwood, J.

2014-06-19T23:59:59.000Z

45

AM(VI) PARTITIONING STUDIES: FY14 FINAL REPORT  

SciTech Connect (OSTI)

The use of higher oxidation states of americium in partitioning from the lanthanides is under continued investigation by the sigma team. This is based on the hypothesis that Am(VI) can be produced and remain stable in irradiated first cycle raffinate solution long enough to perform solvent extraction for separations. The stability of Am(VI) to autoreduction was measured using millimolar americium concentrations in a 1-cm cell with a Cary 6000 UV/Vis spectrophotometer for data acquisition. At millimolar americium concentrations, Am(VI) is stable enough against its own autoreduction for separations purposes. A second major accomplishment during FY14 was the hot test. Americium oxidation and extraction was performed using a centrifugal contactor-based test bed consisting of an extraction stage and two stripping stages. Sixty-three percent americium extraction was obtained in one extraction stage, in agreement with batch contacts. Promising electrochemical oxidation results have also been obtained, using terpyridine ligand derivatized electrodes for binding of Am(III). Approximately 50 % of the Am(III) was oxidized to Am(V) over the course of 1 hour. It is believed that this is the first demonstration of the electrolytic oxidation of americium in a non-complexing solution. Finally, an initial investigation of Am(VI) extraction using diethylhexylbutyramide (DEHBA) was performed.

Bruce J Mincher

2014-10-01T23:59:59.000Z

46

First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso  

E-Print Network [OSTI]

We report the first results of DarkSide-50, a direct search for dark matter operating in the underground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The dark matter detector is a Liquid Argon Time Projection Chamber with a (46.4+-0.7) kg active mass, operated inside a 30 t organic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a (1422+-67) kg d exposure with an atmospheric argon fill. This is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1x10^-44 cm^2 for a WIMP mass of 100 GeV/c^2.

P. Agnes; T. Alexander; A. Alton; K. Arisaka; H. O. Back; B. Baldin; K. Biery; G. Bonfini; M. Bossa; A. Brigatti; J. Brodsky; F. Budano; L. Cadonati; F. Calaprice; N. Canci; A. Candela; H. Cao; M. Cariello; P. Cavalcante; A. Chavarria; A. Chepurnov; A. G. Cocco; L. Crippa; D. D'Angelo; M. D'Incecco; S. Davini; M. De Deo; A. Derbin; A. Devoto; F. Di Eusanio; G. Di Pietro; E. Edkins; A. Empl; A. Fan; G. Fiorillo; K. Fomenko; G. Forster; D. Franco; F. Gabriele; C. Galbiati; A. Goretti; L. Grandi; M. Gromov; M. Y. Guan; Y. Guardincerri; B. Hackett; K. Herner; E. V. Hungerford; Al. Ianni; An. Ianni; C. Jollet; K. Keeter; C. Kendziora; S. Kidner; V. Kobychev; G. Koh; D. Korablev; G. Korga; A. Kurlej; P. X. Li; B. Loer; P. Lombardi; C. Love; L. Ludhova; S. Luitz; Y. Q. Ma; I. Machulin; A. Mandarano; S. Mari; J. Maricic; L. Marini; C. J. Martoff; A. Meregaglia; E. Meroni; P. D. Meyers; R. Milincic; D. Montanari; A. Monte; M. Montuschi; M. E. Monzani; P. Mosteiro; B. Mount; V. Muratova; P. Musico; A. Nelson; S. Odrowski; M. Okounkova; M. Orsini; F. Ortica; L. Pagani; M. Pallavicini; E. Pantic; L. Papp; S. Parmeggiano; R. Parsells; K. Pelczar; N. Pelliccia; S. Perasso; A. Pocar; S. Pordes; D. Pugachev; H. Qian; K. Randle; G. Ranucci; A. Razeto; B. Reinhold; A. Renshaw; A. Romani; B. Rossi; N. Rossi; S. D. Rountree; D. Sablone; P. Saggese; R. Saldanha; W. Sands; S. Sangiorgio; E. Segreto; D. Semenov; E. Shields; M. Skorokhvatov; O. Smirnov; A. Sotnikov; C. Stanford; Y. Suvorov; R. Tartaglia; J. Tatarowicz; G. Testera; A. Tonazzo; E. Unzhakov; R. B. Vogelaar; M. Wada; S. Walker; H. Wang; Y. Wang; A. Watson; S. Westerdale; M. Wojcik; A. Wright; X. Xiang; J. Xu; C. G. Yang; J. Yoo; S. Zavatarelli; A. Zec; C. Zhu; G. Zuzel

2015-02-27T23:59:59.000Z

47

Remediation of chromium(VI) in the vadose zone: stoichiometry and kinetics of chromium(VI) reduction by sulfur dioxide  

E-Print Network [OSTI]

. The reaction was also rapid, with the half-time of about 45 minutes at pH 6 and about 16 hours at pH 7. A two-step kinetic model was developed to describe changes in concentrations of Cr(VI), S(IV), and S(V). Nonlinear regression was applied to obtain...

Ahn, Min

2004-11-15T23:59:59.000Z

48

ENDF-201: ENDF/B-VI summary documentation  

SciTech Connect (OSTI)

Responsibility for oversight of the ENDF/B Evaluated Nuclear Data file lies with the Cross Section Evaluation Working Group (CSEWG), which is comprised of representatives from various governmental and industrial laboratories in the United States. Individual evaluations are provided by scientists at several US laboratories, including significant contributions by scientists from all over the world. In addition, ENDF/B-VI includes for the first time complete evaluations for three materials that were provided from laboratories outside the US. All data are checked and reviewed by CSEWG, and the data file is maintained and issued by the National Nuclear Data Center at Brookhaven National Laboratory. The previous version of the library, ENDF/B-V, was issued in 1979, and two revisions to the data file were provided in subsequent years, the latest occurring in 1981. A total of 75 new or extensively modified neutron sublibrary evaluations are included in ENDF/B-VI, and are summarized in this document. One incident proton sublibrary is described for Fe{sup 56}. The remaining evaluations in ENDF/B-VI have been carried over from earlier versions of ENDF, and have been updated to reflect the new formats. The release of ENDF/B-VI was carried out between January and June of 1990, with groups of materials being released on tapes.'' Table 1 is an index to the evaluation summaries, and includes the material identification or MAT number, the responsible laboratory, and the tape'' number. These evaluations have been released without restrictions on their distribution or use.

Rose, P.F. (comp.)

1991-10-01T23:59:59.000Z

49

ENDF-201: ENDF/B-VI summary documentation  

SciTech Connect (OSTI)

Responsibility for oversight of the ENDF/B Evaluated Nuclear Data file lies with the Cross Section Evaluation Working Group (CSEWG), which is comprised of representatives from various governmental and industrial laboratories in the United States. Individual evaluations are provided by scientists at several US laboratories, including significant contributions by scientists from all over the world. In addition, ENDF/B-VI includes for the first time complete evaluations for three materials that were provided from laboratories outside the US. All data are checked and reviewed by CSEWG, and the data file is maintained and issued by the National Nuclear Data Center at Brookhaven National Laboratory. The previous version of the library, ENDF/B-V, was issued in 1979, and two revisions to the data file were provided in subsequent years, the latest occurring in 1981. A total of 75 new or extensively modified neutron sublibrary evaluations are included in ENDF/B-VI, and are summarized in this document. One incident proton sublibrary is described for Fe{sup 56}. The remaining evaluations in ENDF/B-VI have been carried over from earlier versions of ENDF, and have been updated to reflect the new formats. The release of ENDF/B-VI was carried out between January and June of 1990, with groups of materials being released on ``tapes.`` Table 1 is an index to the evaluation summaries, and includes the material identification or MAT number, the responsible laboratory, and the ``tape`` number. These evaluations have been released without restrictions on their distribution or use.

Rose, P.F. [comp.

1991-10-01T23:59:59.000Z

50

SEGS VI Solar Power Plant | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to: navigation, searchVirginiaRooseveltVI Solar Power Plant Jump to: navigation, search Name

51

Microstructural analyses of Cr(VI) speciation in chromite ore processing Residue (COPR)  

SciTech Connect (OSTI)

The speciation and distribution of Cr(VI) in the solid phase was investigated for two types of chromite ore processing residue (COPR) found at two deposition sites in the United States: gray-black (GB) granular and hard brown (HB) cemented COPR. COPR chemistry and mineralogy were investigated using micro-X-ray absorption spectroscopy and micro-X-ray diffraction, complemented by laboratory analyses. GB COPR contained 30percent of its total Cr(VI) (6000 mg/kg) as large crystals(>20 ?m diameter) of a previously unreported Na-rich analog of calcium aluminum chromate hydrates. These Cr(VI)-rich phases are thought to be vulnerable to reductive and pH treatments. More than 50percent of the Cr(VI) was located within nodules, not easily accessible to dissolved reductants, and bound to Fe-rich hydrogarnet, hydrotalcite, and possibly brucite. These phases are stable over a large pH range, thus harder to dissolve. Brownmilleritewasalso likely associated with physical entrapment of Cr(VI) in the interior of nodules. HB COPR contained no Cr(VI)-rich phases; all Cr(VI) was diffuse within the nodules and absent from the cementing matrix, with hydrogarnet and hydrotalcite being the main Cr(VI) binding phases. Treatment ofHBCOPRis challenging in terms of dissolving the acidity-resistant, inaccessible Cr(VI) compounds; the same applies to ~;;50percent of Cr(VI) in GB COPR.

CHRYSOCHOOU, MARIA; FAKRA, SIRINE C .; Marcus, Matthew A.; Moon, Deok Hyun; Dermatas, Dimitris

2010-03-01T23:59:59.000Z

52

Method for making graded I-III-VI.sub.2 semiconductors and solar cell obtained thereby  

DOE Patents [OSTI]

Improved cell photovoltaic conversion efficiencies are obtained by the simultaneous elemental reactive evaporation process of Mickelsen and Chen for making semiconductors by closer control of the evaporation rates and substrate temperature during formation of the near contact, bulk, and near junction regions of a graded I-III-VI.sub.2, thin film, semiconductor, such as CuInSe.sub.2 /(Zn,Cd)S or another I-III-VI.sub.2 /II-VI heterojunction.

Devaney, Walter E. (Seattle, WA)

1987-08-04T23:59:59.000Z

53

RisNyt NO2 2005 I de kommende rtier vil vi se store  

E-Print Network [OSTI]

- per: For det første et meget tættere samspil mellem energiproduktion og forbrug end vi kender i dag

54

Group I-III-VI.sub.2 semiconductor films for solar cell application  

DOE Patents [OSTI]

This invention relates to an improved thin film solar cell with excellent electrical and mechanical integrity. The device comprises a substrate, a Group I-III-VI.sub.2 semiconductor absorber layer and a transparent window layer. The mechanical bond between the substrate and the Group I-III-VI.sub.2 semiconductor layer is enhanced by an intermediate layer between the substrate and the Group I-III-VI.sub.2 semiconductor film being grown. The intermediate layer contains tellurium or substitutes therefor, such as Se, Sn, or Pb. The intermediate layer improves the morphology and electrical characteristics of the Group I-III-VI.sub.2 semiconductor layer.

Basol, Bulent M. (Redondo Beach, CA); Kapur, Vijay K. (Northridge, CA)

1991-01-01T23:59:59.000Z

55

U(VI) sorption and reduction kinetics on the magnetite (111) surface  

E-Print Network [OSTI]

U(VI) (introduced as uranyl nitrate), 1 mM NaNO 3 , [CO 3 ]respect to uraninite and uranyl nitrate mechanical mixture

Singer, D.M.

2013-01-01T23:59:59.000Z

56

ORGANIZATIONAL CHART - CYCLOTRON INSTITUTE VI-11 DIRECTOR Tribble  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the ContributionsArms Control R&DNuclear fuelOPTICS FOR AOREM hostsJeskeHodges21VI-11

57

Tracking the Sun VI: An Historical Summary of the Installed Price of Photovoltaics in the United States from 1998 to 2012  

E-Print Network [OSTI]

Laboratory. Tracking the Sun VI: The Installed Price ofRange ?10 kW Tracking the Sun VI: The Installed Price ofRange ?10 kW Tracking the Sun VI: The Installed Price of

Barbose, Galen

2014-01-01T23:59:59.000Z

58

Geothermal Program Review VI: proceedings. Beyond goals and objectives  

SciTech Connect (OSTI)

Program Review VI was comprised of six sessions, including an opening session, four technical sessions that addressed each of the major DOE research areas, and a session on special issues. The technical sessions were on Hydrothermal, Hot Dry Rock, Geopressured and Magma resources. Presenters in the technical sessions discussed their R and D activities within the context of specific GTD Programmatic Objectives for that technology, their progress toward achieving those objectives, and the value of those achievements to industry. The ''Special Issues'' presentations addressed several topics such as the interactions between government and industry on geothermal energy R and D; the origin and basis for the programmatic objectives analytical computer model; and international marketing opportunities for US geothermal equipment and services. The unique aspect of Program Review VI was that it was held in conjunction with the National Geothermal Association's Industry Round Table on Federal R and D. The Round Table provided a forum for open and lively discussions between industry and government researchers and gave industry an opportunity to convey their needs and perspectives on DOE's research programs. These discussions also provided valuable information to DOE regarding industry's priorities and directions.

Not Available

1988-01-01T23:59:59.000Z

59

ORNL/TM-2008/069 KENO-VI Primer: A Primer for  

E-Print Network [OSTI]

ORNL/TM-2008/069 KENO-VI Primer: A Primer for Criticality Calculations with SCALE/KENO-VI Using Gee Nuclear Information System (INIS) representatives from the following source. Office of Scientific or reflect those of the United States Government or any agency thereof. #12;ORNL/TM-2008/069 Nuclear Science

Pennycook, Steve

60

Simulation of reactive transport of uranium(VI) in groundwater with variable chemical conditions  

E-Print Network [OSTI]

stored in poorly designed facilities or where it has been leached from U mill tailings [USDOE, 1996Simulation of reactive transport of uranium(VI) in groundwater with variable chemical conditions alluvial aquifer beneath a former U(VI) mill located near Naturita, CO, was simulated using a surface

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


61

Modeling the Removal of Uranium U(VI) from Aqueous Solutions in the  

E-Print Network [OSTI]

include natural U deposits, mining, milling, and tailing operations and U.S. Department of Energy (DOEModeling the Removal of Uranium U(VI) from Aqueous Solutions in the Presence of Sulfate Reducing The reduction kinetics of soluble hexavalent uranium (U(VI)) to insoluble tetravalent U(IV) by both a mixed

62

Microbial reduction of iron(III)-rich nontronite and uranium(VI)1 Gengxin Zhang1  

E-Print Network [OSTI]

1 Microbial reduction of iron(III)-rich nontronite and uranium(VI)1 2 Gengxin Zhang1 , John M Cosmochimica Acta9 10 Title running head: bioreduction of nontronite and uranium11 12 *Corresponding author17 examined the reduction of iron(III)-rich nontronite NAu-2 and uranium(VI) by18 Shewanella

Burgos, William

63

UMBC Policy on Facilities Use UMBC Policy # VI-4.10.01 1  

E-Print Network [OSTI]

UMBC Policy on Facilities Use UMBC Policy # VI-4.10.01 1 I. Introduction This policy is predicated on the University System of Maryland Policy 145.0 VI-4.10- POLICY ON THE USE of Regents on January 11, 1990. The policy reads: 1. The physical facilities of the University System may

Adali, Tulay

64

Effects of Solid-to-Solution Ratio on Uranium(VI) Adsorption and Its  

E-Print Network [OSTI]

Effects of Solid-to-Solution Ratio on Uranium(VI) Adsorption and Its Implications T A O C H E N G, and Department of Geology and Geophysics, University of Wisconsin-Madison, 1215 West Dayton Street, Madison interacting ligands. Introduction The migration of uranium(VI), as well as other radionuclides and metal

Roden, Eric E.

65

Aerobic uranium (VI) bioprecipitation by metal-resistant bacteria isolated from radionuclide-  

E-Print Network [OSTI]

Aerobic uranium (VI) bioprecipitation by metal-resistant bacteria isolated from radionuclide uranium [U(VI)] mediated by the intrinsic phosphatase acti- vities of naturally occurring bacteria leaks occur, these wastes come into contact with surrounding geologic media, allowing for migration

Skolnick, Jeff

66

Simulation of Reduction of Cr(VI) by Fe(II) Produced Electrochemically in a Parallel-Plate Electrochemical Reactor  

E-Print Network [OSTI]

at the cathode, electrocoagulation uses electricity to produce a reducing agent ferrous ions from an iron anode the reduction of Cr VI by permeable reactive barriers. Gheju and Lovi7 reported that the re- duction of Cr VI

67

Chromium(VI) bioremoval by pseudomonas bacteria: role of microbial exudates for natural attenuation and biotreatment of Cr(VI) contamination  

SciTech Connect (OSTI)

Laboratory batch and column experiments were conducted to investigate the role of microbial exudates, e.g., exopolymeric substance (EPS) and alginic acid, on microbial Cr(VI) reduction by two different Pseudomonas strains (P. putida P18 and P. aeuroginosa P16) as a method for treating subsurface environment contaminated with Cr(VI). Our results indicate that microbial exudates significantly enhanced microbial Cr(VI) reduction rates by forming less toxic and highly soluble organo-Cr(III) complexes despite the fact Cr(III) has a very low solubility under the experimental conditions studied (e.g., pH 7). The formation of soluble organo-Cr(III) complexes led to the protection of the cells and chromate reductases from inactivation. In systems with no organic ligands, soluble organo-Cr(III) end products were formed between Cr(III) and the EPS directly released by bacteria due to cell lysis. Our results also provide evidence that cell lysis played an important role in microbial Cr(VI) reduction by Pseudomonas bacteria due to the release of constitutive reductases that intracellularly and/or extracellularly catalyzed the reduction of Cr(VI) to Cr(III). The overall results highlight the need for incorporation of the release and formation of organo-Cr(III) complexes into reactive transport models to more accurately design and monitor in situ microbial remediation techniques for the treatment of subsurface systems contaminated with Cr(VI).

Dogan, N.M.; Dodge, C.; Kantar, C.; Gulcan, S.; Yilmaz, B.C.; Mazmanci, M.A.

2011-02-14T23:59:59.000Z

68

Chromium(VI) Bioremoval by Pseudomonas Bacteria: Role of Microbial Exudates for Natural Attenuation and Biotreatment of Cr(VI) Contamination  

SciTech Connect (OSTI)

Laboratory batch and column experiments were conducted to investigate the role of microbial exudates, e.g., exopolymeric substance (EPS) and alginic acid, on microbial Cr(VI) reduction by two different Pseudomonas strains (P. putida P18 and P. aeuroginosa P16) as a method for treating subsurface environment contaminated with Cr(VI). Our results indicate that microbial exudates significantly enhanced microbial Cr(VI) reduction rates by forming less toxic and highly soluble organo-Cr(III) complexes despite the fact Cr(III) has a very low solubility under the experimental conditions studied (e.g., pH 7). The formation of soluble organo-Cr(III) complexes led to the protection of the cells and chromate reductases from inactivation. In systems with no organic ligands, soluble organo-Cr(III) end products were formed between Cr(III) and the EPS directly released by bacteria due to cell lysis. Our results also provide evidence that cell lysis played an important role in microbial Cr(VI) reduction by Pseudomonas bacteria due to the release of constitutive reductases that intracellularly and/or extracellularly catalyzed the reduction of Cr(VI) to Cr(III). The overall results highlight the need for incorporation of the release and formation of organo-Cr(III) complexes into reactive transport models to more accurately design and monitor in situ microbial remediation techniques for the treatment of subsurface systems contaminated with Cr(VI).

N Mercan Dogan; C Kantar; S Gulcan; C Dodge; B Coskun Yilmaz; M Ali Mazmanci

2011-12-31T23:59:59.000Z

69

The role of nanopores on U(VI) sorption and redox behavior in U(VI)-contaminated subsurface sediments  

SciTech Connect (OSTI)

Most reactive surfaces in clay-dominated sediments are present within nanopores (pores of nm dimension). The behavior of geological fluids and minerals in nanopores is significantly different from those in normal non-nanoporous environments. The effect of nanopore surfaces on U(VI) sorption/desorption and reduction is likely to be significant in clay-rich subsurface environments. Our research results from both model nanopore system and natural sediments from both model system (synthetic nanopore alumina) and sediments from the ORNL Field Research Center prove that U(VI) sorption on nanopore surfaces can be greatly enhanced by nanopore confinement environments. The results from the project provide advanced mechanistic, quantitative information on the physiochemical controls on uranium sorption and redox behavior in subsurface sediments. The influence of nanopore surfaces on coupled uranium sorption/desorption and reduction processes is significant in virtually all subsurface environments, because most reactive surfaces are in fact nanopore surfaces. The results will enhance transfer of our laboratory-based research to a major field research initiative where reductive uranium immobilization is being investigated. Our results will also provide the basic science for developing in-situ colloidal barrier of nanoporous alumina in support of environmental remediation and long term stewardship of DOE sites.

Xu, Huifang; Roden, Eric E.; Kemner, Kenneth M.; Jung, Hun-Bok; Konishi, Hiromi; Boyanov, Maxim; Sun, Yubing; Mishra, Bhoopesh

2013-10-16T23:59:59.000Z

70

Integrated Ecogenomics Study for Bioremediation of Cr(VI) at Hanford 100H Area  

SciTech Connect (OSTI)

Hexavalent chromium is a widespread contaminant found in groundwater. In order to stimulate microbially mediated Cr(VI)-reduction, a poly-lactate compound was injected into Cr(VI)-contaminated aquifers at site 100H at Hanford. Investigation of bacterial community composition using high-density DNA microarray analysis of 16S rRNA gene products revealed a stimulation of Pseudomonas, Desulfovibrio and Geobacter species amongst others. Enrichment of these organisms coincided with continued Cr(VI) depletion. Functional gene-array analysis of DNA from monitoring well indicated high abundance of genes involved in nitrate-reduction, sulfate-reduction, iron-reduction, methanogenesis, chromium tolerance/reduction. Clone-library data revealed Psedomonas was the dominant genus in these samples. Based on above results, we conducted lab investigations to study the dominant anaerobic culturable microbial populations present at this site and their role in Cr(VI)-reduction. Enrichments using defined anaerobic media resulted in isolation of an iron-reducing, a sulfate-reducing and a nitrate-reducing isolate among several others. Preliminary 16S rDNA sequence analysis identified the isolates as Geobacter metallireducens, Pseudomonas stutzeri and Desulfovibrio vulgaris species respectively. The Pseudomonas isolate utilized acetate, lactate, glycerol and pyruvate as alternative carbon sources, and reduced Cr(VI). Anaerobic washed cell suspension of strain HLN reduced almost 95?M Cr(VI) within 4 hr. Further, with 100?M Cr(VI) as sole electron-acceptor, cells grew to 4.05 x 107 /ml over 24 h after an initial lag, demonstrating direct enzymatic Cr(VI) reduction coupled to growth. These results demonstrate that Cr(VI)-immobilization at Hanford 100H site could be mediated by direct microbial metabolism in addition to indirect chemical reduction of Cr(VI) by end-products of microbial activity.

Chakraborty, Romy; Chakraborty, Romy

2008-08-12T23:59:59.000Z

71

Fision product evaluations for ENDF/B-VI  

SciTech Connect (OSTI)

Most of the ENDF/B-V fission-product evaluations were completed during the time period 1974--1980, and some of these were based on very limited experimental data. For short-lived fission products, there is still very little experimental data available because of the difficulty of obtaining these measurements. However, since 1980 a considerable amount of new experimental data have become available for stable and long-lived fission products. By utilizing the new data, significant improvements are now possible for some fission-product evaluations. The purpose of this paper is to report on 16 ENDF/B-VI evaluations that have been done at Oak Ridge National Laboratory (ORNL). The primary emphasis in this work has been placed on the resolved resonance region, but for some nuclides, new experimental data were also used to improve the evaluations for energies above the resolved resonance range.

Wright, R.Q.

1990-01-01T23:59:59.000Z

72

Reduction of Fe(III), Cr(VI), U(VI), and Tc(VII) by Deinococcus radiodurans R1  

SciTech Connect (OSTI)

Deinococcus radiodurans is an exceptionally radiation-resistant microorganism capable of surviving acute exposures to ionizing radiation doses of 15,000 Gy and previously described as having a strictly aerobic respiratory metabolism. Under strict anaerobic conditions, D. radiodurans R1 reduced Fe(III)-nitrilotriacetic acid coupled to the oxidation of lactate to CO{sub 2} and acetate but was unable to link this process to growth. D. radiodurans reduced the humic acid analog anthraquinone-2,6-disulfonate (AQDS) to its dihydroquinone form, AH{sub 2}DS, which subsequently transferred electrons to the Fe(III) oxides hydrous ferric oxide and goethite via a previously described electron shuttle mechanism. D. radiodurans reduced the solid-phase Fe(III) oxides in the presence of either 0.1 mM AQDS or leonardite humic acids (2 mg ml{sup {minus}1}) but not in their absence. D. radiodurans also reduced U(VI) and Tc(VII) in the presence of AQDS. In contrast, Cr(VI) was directly reduced in anaerobic cultures with lactate although the rate of reduction was higher in the presence of AQDS. The results are the first evidence that D. radiodurans can reduce Fe(III) coupled to the oxidation of lactate or other organic compounds. Also, D. radiodurans, in combination with humic acids or synthetic electron shuttle agents, can reduce U and Tc and thus has potential applications for remediation of metal- and radionuclide-contaminated sites where ionizing radiation or other DNA-damaging agents may restrict the activity of more sensitive organisms.

Fredrickson, J.K.; Kostandarithes, H.M.; Li, S.W.; Plymake, A.E.; Daly, M.J.

2000-05-01T23:59:59.000Z

73

E-Print Network 3.0 - aerl mark vi Sample Search Results  

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

and Resources 60 DOI: 10.1126science.1157972 , 359 (2009);323Science Summary: Printing Office, Washington, DC, 1981). 22. J. C. Huneke, G. J. Wasserburg, Lunar Sci. VI, 417...

74

U(VI) sorption and reduction kinetics on the magnetite (111)...  

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

information in real-time under batch-flow conditions. Citation: Singer DM, SME Chatman, ES Ilton, KM Rosso, JF Banfield, and G Waychunas.2012."U(VI) sorption and...

75

E-Print Network 3.0 - alfa survey vi Sample Search Results  

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

Paris VI pastel-00636920,version1-28Oct2011 12;11 elaboration of nitrogen-doped aerogels and xerogels Source: Paris-Sud XI, Universit de - Institut d'Optique, Laboratoire...

76

Cr(VI) reduction in aqueous solutions by using copper smelter slag  

SciTech Connect (OSTI)

The ability of Copper Smelter Slag (CSS) to reduce Cr(VI) in aqueous solutions has been investigated. The extent of reduction if dependent on the amounts of acid and reductant, contact time, Cr(VI) concentration, temperature of the solution and particle size of CSS. The amount of acid is the most important variable affecting the reduction process. When twice the amount of acid required with respect to Cr(VI) was used, Cr(VI) in 100 ml solution (100 mg/l) was completely reduced in a contact period less than 5 min by a 10 g/l dosage of CSS. Reduction efficiency increased with increase in temperature of solution, showing that the process is endothermic. Reduced chromium, and iron and other metals dissolved from CSS were effectively precipitated by using NaOH or calcinated carbonation sludge from sugar plant.

Kiyak, B.; Oezer, A.; Altundogan, H.S.; Erdem, M.; Tuemen, F. (Firat Univ., Elazig (Turkey))

1999-01-01T23:59:59.000Z

77

Cr(VI) reduction in aqueous solutions by using copper smelter slag  

SciTech Connect (OSTI)

The ability of Copper Smelter Slag (CSS) to reduce Cr(VI) in aqueous solutions has been investigated. The extent of reduction if dependent on the amounts of acid and reductant, contact time, Cr(VI) concentration, temperature of the solution and particle size of CSS. The amount of acid is the most important variable affecting the reduction process. When twice the amount of acid required with respect to Cr(VI) was used, Cr(VI) in 100 ml solution (100 mg/l) was completely reduced in a contact period less than 5 min by a 10 g/l dosage of CSS. Reduction efficiency increased with increase in temperature of solution, showing that the process is endothermic. Reduced chromium, and iron and other metals dissolved from CSS were effectively precipitated by using NaOH or calcinated carbonation sludge from sugar plant.

Kiyak, B.; Oezer, A.; Altundogan, H.S.; Erdem, M.; Tuemen, F. [Firat Univ., Elazig (Turkey)] [Firat Univ., Elazig (Turkey)

1999-11-01T23:59:59.000Z

78

Reduction of Health Risks Due to Chromium(VI)Using Mesquite: A Potential Cr Phytoremediator  

SciTech Connect (OSTI)

Chromium is a transition metal extensively used in industry. Cr mining and industrial operations account for chromium wastes at Superfund sites in the United States. A study was performed to investigate the possibility of using mesquite (Prosopis spp.), which is an indigenous desert plant species, to remove Cr from contaminated sites. In this study, mesquite plants were grown in an agar-based medium containing 75 mg L-1 and 125 mg L-1 of Cr(VI). The Cr content of leaf tissue (992 mg kg-1 of dry weight, from 125 mg L-1 of Cr(VI)) indicated that mesquite could be classified as a chromium hyperaccumulator. X-ray absorption spectroscopy (XAS) studies performed to experimental samples showed that mesquite roots absorbed some of the supplied Cr(VI). However, the data analyses of plant tissues demonstrated that the absorbed Cr(VI) was fully reduced to Cr(III) in the leaf tissue.

Gardea-Torresdey, Jorge L.; Aldrich, Mary V.; Peralta-Videa, Jose R.; Parsons, Jason G.

2004-03-29T23:59:59.000Z

79

Reduction of U(VI) Complexes by Anthraquinone Disulfonate: Experiment and Molecular Modeling  

SciTech Connect (OSTI)

Past studies demonstrate that complexation will limit abiotic and biotic U(VI) reduction rates and the overall extent of reduction. However, the underlying basis for this behavior is not understood and presently unpredictable across species and ligand structure. The central tenets of these investigations are: (1) reduction of U(VI) follows the electron-transfer (ET) mechanism developed by Marcus; (2) the ET rate is the rate-limiting step in U(VI) reduction and is the step that is most affected by complexation; and (3) Marcus theory can be used to unify the apparently disparate U(VI) reduction rate data and as a computational tool to construct a predictive relationship.

Ainsworth, C.C.; Wang, Z.; Rosso, K.M.; Wagnon, K.; Fredrickson, J.K.

2004-03-17T23:59:59.000Z

80

Upscaling of U(VI) Desorption and Transport Using Decimeter-Scale Tanks  

SciTech Connect (OSTI)

Experimental work was used to validate modeling studies and develop multicontinuum models of U(VI) transport in a contaminated aquifer. At the bench scale, it has been shown that U(VI) desorption is rate-limited and that rates are dependent on the bicarbonate concentration. Two decimeter-scale experiments were conducted in order to help establish rigorous upscaling approaches that could be tested at the tracer test and plume scales.

Rodriguez, Derrick [Colorado School of Mines

2014-12-22T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Uranium(VI) extraction by TBP in the presence of HDBP  

SciTech Connect (OSTI)

The influence of di-n-butyl phosphoric acid (HDBP) upon extraction of uranium(VI) by tri-n-butyl phosphate (TBP) from 0.5--3.0 M nitric acid solutions has been studied. It has been shown that the uranium(VI) distribution coefficient D{sub U} for extraction by 1.1 M TBP in tri-decane or xylene is increased when HDBP is present in the organic phase. For iso-molar solutions of (TBP + HDBP) with a total concentration of 0.36 M, and Uranium(VI) aqueous concentration up to 10--20 g/l, a maximum value of D{sub U} is observed when TBP/HDBP = 1; for higher U(VI) concentration the maximum gradually disappears, with D{sub U} growing monotonically with the HDBP content in the organic phase. Uranium(VI) absorption spectra for 1.1 M TBP in tri-decane or xylene, containing HDBP, provide evidence for the formation of compounds, of which composition is intermediate between uranyl nitrate--TBP disolvate and the U(VI)--HDBP complex. It is proposed that these intermediate compounds are UO{sub 2}(NO{sub 3}){sub 2}HDBP.TBP and UO{sub 2}(NO{sub 3}){sub 2}(HDBP){sub 2}.

Fedorov, Yu.S.; Zilberman, B.Ya.; Kulikov, S.M.; Blazheva, I.V.; Mishin, E.N. [V.G. Khlopin Radium Inst., Saint-Petersburg (Russian Federation); Wallwork, A.L.; Denniss, I.S.; May, I. [British Nuclear Fuels plc, Sellafield (United Kingdom); Hill, N.J. [British Nuclear Fuels plc, Risley (United Kingdom)

1999-03-01T23:59:59.000Z

82

Spectroscopic study of the interaction of U(VI) with transferrin and albumin for speciation of U(VI) under blood serum conditions  

E-Print Network [OSTI]

radiation in human tissue, TAT allows to selectively deliver a highly cytotoxic radiation dose to targeted ternary complexes with carbonate acting as a synergistic anion. Together with literature data describing the interaction of U(VI) with low molecular weight inorganic and organic serum components, the speciation of U

Boyer, Edmond

83

Abiotic U(VI) Reduction by Sorbed Fe(II) on Natural Sediments  

SciTech Connect (OSTI)

Laboratory experiments were performed as a function of aqueous Fe(II) concentration to determine the uptake and oxidation of Fe(II), and Fe(II)-mediated abiotic reduction of U(VI) by aquifer sediments from the Rifle IFRC field site in Colorado, USA. Mössbauer analysis of the sediments spiked with aqueous 57Fe(II) showed that 57Fe(II) was oxidized on the mineral surfaces to 57Fe(III) and most likely formed a nano-particulate Fe(III)-oxide or ferrihydrite-like phase. The extent of 57Fe oxidation decreased with increasing 57Fe(II) uptake, such that 100 % was oxidized at 7.3 ?mol/g Fe and 52 % at 39.6 ?mol/g Fe, indicating that the sediments had a finite capacity for oxidation of Fe(II). Abiotic U(VI) reduction was observed by XANES spectroscopy only when the Fe(II) uptake was greater than approximately 20 ?mol/g and surface-bound Fe(II) was present. The level of U(VI) reduction increased with increasing Fe(II)- loading above this level to a maximum of 18 and 36 % U(IV) at pH 7.2 (40.7 ?mol/g Fe) and 8.3 (56.1 ?mol/g Fe), respectively in the presence of 400 ppm CO2. Greater U(VI) reduction was observed in CO2 free systems [up to 44 and 54 % at pH 7.2 (17.3 ?mol/g Fe) and 8.3 (54.8 ?mol/g Fe), respectively] compared to 400 ppm CO2 systems, presumably due to differences in aqueous U(VI) speciation. While pH affects the amount of Fe(II) uptake onto the solid phase, with greater Fe(II) uptake at higher pH, similar amounts of U(VI) reduction were observed at pH 7.2 and 8.3 for a similar Fe(II) uptake. Thus, it appears that abiotic U(VI) reduction is controlled primarily by Fe(II) concentration and aqueous U(VI) speciation. The range of Fe(II) loadings tested in this study are within the range observed in bioreduced sediments, suggesting that Fe(II)-mediated abiotic U(VI) reduction may indeed play a role in field settings.

Fox, Patricia M.; Davis, James A.; Kukkadapu, Ravi K.; Singer, David M.; Bargar, John R.; Williams, Kenneth H.

2013-09-15T23:59:59.000Z

84

Microbial Reductive Transformation of Phyllosilicate Fe(III) and U(VI) in Fluvial Subsurface Sediments  

SciTech Connect (OSTI)

The microbial reduction of Fe(III) and U(VI) were investigated in shallow aquifer sediments collected from subsurface Pleistocene flood deposits near the Hanford Reach of the Columbia River in Washington State. Increases in 0.5 N HCl-extractable Fe(II) were observed in incubated sediments and 57Fe Mössbauer spectroscopy revealed that Fe(III) associated with phyllosilicates and pyroxene was reduced to Fe(II). Aqueous uranium(VI) concentrations decreased in incubated Hanford sediments with the rate and extent being greater in sediment amended with organic carbon. X-ray absorption spectroscopy of bioreduced sediments indicated that 67-77% of the U signal was U(VI), probably as an adsorbed species associated with a new or modified reactive mineral phase. Phylotypes within the Deltaproteobacteria were more common in Hanford sediments incubated with U(VI) than without and in U(VI)-free incubations, members of the Clostridiales were dominant with sulfate-reducing phylotypes more common in the sulfate-amended sediments. These results demonstrate the potential for anaerobic reduction phyllosilicate Fe(III) and sulfate in Hanford unconfined aquifer sediments and biotransformations involving reduction and adsorption leading to decreased aqueous U concentrations.

Lee, Ji-Hoon; Fredrickson, Jim K.; Kukkadapu, Ravi K.; Boyanov, Maxim I.; Kemner, Kenneth M.; Lin, Xueju; Kennedy, David W.; Bjornstad, Bruce N.; Konopka, Allan; Moore, Dean A.; Resch, Charles T.; Phillips, Jerry L.

2012-04-14T23:59:59.000Z

85

Sediment studies of the biological factors controlling the reduction of U(VI).  

SciTech Connect (OSTI)

Studies were conducted primarily with sediments, both in laboratory incubations and in a field experiment, with supporting studies with pure cultures. To our knowledge the sediment studies were the first on microbial U(VI) reduction in actual uranium-contaminated subsurface sediments, under conditions that mimic those found in situ. Important findings included: (1) U(VI) reduction is a biotic process in subsurface sediments. (2) U(VI) reduction can be stimulated most effectively with the addition of acetate. Although it had been speculated that microbial U(VI) reduction might be capable of this type of environmental remediation ever since the discovery of microbial U(VI) reduction, this had not been previously demonstrated under environmentally relevant conditions. (3) U(VI) is reduced concurrently with Fe(III) and prior to sulfate reduction. U(VI) and Fe(III) reduction proceeded concurrently, accompanied by a dramatic enrichment in organisms in the Geobacteraceae. Sulfate-reducing microorganisms do not appear to be important components of the microbial community reducing U(VI) in these subsurface sediments. (4) Nitrate has important influences on U(VI) reduction. Nitrate inhibits the reduction of metals until nitrate is depleted. Fe(III)-reducing microorganisms such as Geobacter metallireducens and Desulfitobacterium species can oxidize Fe(II) with the reduction of nitrate which is an important consideration because our previous studies have demonstrated that freshly precipitated Fe(III) oxides can reoxidize U(IV) to U(VI). The discovery that G. metallireducens can ''run backwards'' and oxidize U(IV) when nitrate is present reveals another mechanism preventing precipitation of U(IV) in the presence of nitrate as well as potential novel strategy for removing uranium from the subsurface after a site has been remediated. (5) Importance of understanding Fe(III) forms available for microbial reduction. Fe(III) is orders of magnitude more abundant than U(VI) as an electron acceptor to support microbial growth. It was demonstrated that poorly crystalline Fe(III) oxides and structural Fe(III) in clays are the predominant forms of microbially reducible Fe(III). Such findings are important for the development of models of Fe(III) reduction in similar aquifer environments, such as those found at many UMTRA sites. (6) Mechanisms for Fe(III) oxide reduction. It was discovered that phylogenetically distinct Fe(III) reducer have different strategies for reducing Fe(III) and the fact that Geobacter species must directly contact Fe(III) in order to reduce it may help explain its predominance over other Fe(III) reducers in the subsurface. (7) Transfer of laboratory results to the field. Results from laboratory studies were used to design a field experiment in which U(VI) reduction was successfully precipitated from the contaminated water with the injection of acetate.

Lovley, derek, R.

2004-08-04T23:59:59.000Z

86

Differential isotopic fractionation during Cr(VI) reduction by an aquifer-derived bacterium under arobic versus denitrifying conditions  

SciTech Connect (OSTI)

We studied Cr isotopic fractionation during Cr(VI) reduction by Pseudomonas stutzeri strain RCH2. Despite the fact that strain RCH2 reduces Cr(VI) co-metabolically under both aerobic and denitrifying conditions and at similar specific rates, fractionation was markedly different under these two conditions (ε ~2? aerobically and ~0.4? under denitrifying conditions).

Han, R.; Qin, L.; Brown, S. T.; Christensen, J. N.; Beller, H. R.

2012-02-01T23:59:59.000Z

87

UMBC Policy VI-10.00.01 Page 1 of 5 UMBC POLICY ON POLICY FORMULATION AND MANAGEMENT  

E-Print Network [OSTI]

UMBC Policy VI-10.00.01 Page 1 of 5 UMBC POLICY ON POLICY FORMULATION AND MANAGEMENT UMBC Policy No. VI-10.00.01 I. POLICY STATEMENT The UMBC community should have access to well-articulated and understandable University Policies and related Operating Procedures. Those responsible for writing, updating

Adali, Tulay

88

FATE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE  

E-Print Network [OSTI]

FATE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE Abstract by Kenton A that influence radionuclide fate and transport in the Hanford vadose zone. Hanford was established for nuclear

Flury, Markus

89

Studies of the Di-iron(VI) Intermediate in Ferrate-Dependent Oxygen Evolution from Water  

E-Print Network [OSTI]

Information ABSTRACT: Molecular oxygen is produced from water via the following reaction of potassium ferrateStudies of the Di-iron(VI) Intermediate in Ferrate-Dependent Oxygen Evolution from Water Rupam consumption of natural abundance water. The derived 18 O KIEs provide insights concerning the identity

Roth, Justine P.

90

PHYS 2750, Winter 2014 page 1 of 2 General Physics VI: Modern Physics  

E-Print Network [OSTI]

PHYS 2750, Winter 2014 page 1 of 2 General Physics VI: Modern Physics PHYS 2750 1. What is this course all about? The Golden Age of Physics is often referred to as the the period from the late 1800's up to about the mid 1900's. Physics 2750 is a course which explores many of the fundamental

Quirion, Guy

91

ViDE: A Vision-Based Approach for Deep Web Data Extraction  

E-Print Network [OSTI]

ViDE: A Vision-Based Approach for Deep Web Data Extraction Wei Liu, Xiaofeng Meng, Member, IEEE, and Weiyi Meng, Member, IEEE Abstract--Deep Web contents are accessed by queries submitted to Web databases and the returned data records are enwrapped in dynamically generated Web pages (they will be called deep Web pages

92

VI. ICRF HEATING D. B. BATCHELOR (ORNL), M. D. CARTER (ORNL), R. H. GOULDING (ORNL),  

E-Print Network [OSTI]

VI. ICRF HEATING D. B. BATCHELOR (ORNL), M. D. CARTER (ORNL), R. H. GOULDING (ORNL), D. J. HOFFMAN in the ion cyclotron range of frequencies (ICRF) has been chosen as the primary auxiliary heating technique for BPX. This decision is based on the wide successof ICRF heating in existing large-scale experiments

93

Hydrogen, Fuel Cells, and Infrastructure Technologies FY 2002 Progress Report Section VI. Safety and Codes & Standards  

E-Print Network [OSTI]

to H2 from 0-100% at 450o C in N2 background Future Directions · Fabricate 2nd generation sensors.A Safety VI.A.1 Gallium Nitride Integrated Gas/Temperature Sensors for Fuel Cell System Monitoring catalytic gate field effect transistor (FET) sensors to resolve and detect carbon monoxide (CO

94

In the light of evolution VI: Brain and behavior Georg F. Striedtera,b  

E-Print Network [OSTI]

In the light of evolution VI: Brain and behavior Georg F. Striedtera,b , John C. Aviseb (1859), Darwin (1) barely mentioned the brain. Only in The Descent of Man, and Selection in Relation system, must have evolved. Even so, Darwin himself wrote little on the brain. Instead, Darwin asked his

Avise, John

95

Dendritic Chelating Agents. 2. U(VI) Binding to Poly(amidoamine) and  

E-Print Network [OSTI]

. Introduction The mining and processing of uranium ores and the production, reprocessing and disposal of uranium streams is a key compo- nent of the uranium nuclear fuel cycle (1­4). Uranyl [U(VI)] is the most stable uranium species under the typical oxidizing conditionsencounteredinthetreatmentofaqueouseffluents (3

Goddard III, William A.

96

VI. SENSOR CALIBRATIONS One of the most important aspects of high  

E-Print Network [OSTI]

13 VI. SENSOR CALIBRATIONS One of the most important aspects of high quality solar radiation be determined (in volts/watts/meter2 ). This is done by simulta- neously comparing the measured output to an input signal must be determined. For the CR-10 data logger this means check- ing the relation between

Oregon, University of

97

Clostridium chromiireducens sp. nov., isolated from Cr(VI)-contaminated soil  

E-Print Network [OSTI]

by its ability to reduce Cr(VI) in low concentrations. Mixed acid fermentation during growth on glucose resulted in accumulation of acetate, butyrate, formate and lactate. Morphological studies indicated the presence of peritrichous flagella, pili and an S-layer. The major cellular fatty acids (.5 %) were C16 : 0

Florida, University of

98

Ultrastructure of the Reproductive System of the Black Swamp Snake (Seminatrix pygaea). VI. Anterior  

E-Print Network [OSTI]

Ultrastructure of the Reproductive System of the Black Swamp Snake (Seminatrix pygaea). VI of the North American natricine snake Seminatrix pygaea are described using light and electron micros- copy is a glycoprotein. Overall, the characteristics of the ante- rior testicular ducts of this snake are concordant

Sever, David M.

99

Field Investigations of Lactate-Stimulated Bioreduction of Cr(VI) at Hanford 100H  

SciTech Connect (OSTI)

The overall objective of this paper is to carry out field investigations to assess the potential for immobilizing and detoxifying chromium-contaminated groundwater using lactate-stimulated bioreduction of Cr(VI) to Cr(III) at the Hanford 100H site.

T. C. Hazen; B. Faybishenko; D. Joyner; S. Borglin; E. Brodie; S.; K. Williams; J. Peterson; J. Wan; T. Tokunaga; M.; P. E. Long; Resch, C.T.; Newcomer, D.; Koenigsberg, S.; Willet, A.

2005-04-20T23:59:59.000Z

100

VI. Conclusions In recent years, our graduate program has enjoyed increasing success as the  

E-Print Network [OSTI]

62 Philosophy VI. Conclusions In recent years, our graduate program has enjoyed increasing success study dollars are never guaranteed, and in these uncertain times, are more at risk than ever. We hope of the core areas of philosophy. Two areas where we are not as strong as we need to be are Ethics

Rock, Chris

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


101

Characterization of U(VI) Sorption-Desorption Processes and Model Upscaling  

SciTech Connect (OSTI)

The objectives of the overall collaborative EMSP effort (with which this project is associated) were to characterize sorption and desorption processes of U(VI) on pristine and contaminated Hanford sediments over a range of sediment facies and materials properties and to relate such characterization both to fundamental molecular-scale understanding and field-scale models of geochemistry and mass transfer. The research was intended to provide new insights on the mechanisms of U(VI) retardation at Hanford, and to allow the development of approaches by which laboratory-developed geochemical models could be upscaled for defensible field-scale predictions of uranium transport in the environment. Within this broader context, objectives of the JHU-based project were to test hypotheses regarding the coupled roles of adsorption and impermeable-zone diffusion in controlling the fate and transport of U(VI) species under conditions of comparatively short-term exposure. In particular, this work tested the following hypotheses: (1) the primary adsorption processes in the Hanford sediment over the pH range of 7 to 10 are surface complexation reactions of aqueous U(VI) hydroxycarbonate and carbonate complexes with amphoteric edge sites on detrital phyllosilicates in the silt/clay size fraction; (2) macroscopic adsorption intensity (at given aqueous conditions) is a function of mineral composition and aquatic chemistry; and (3) equilibrium sorption and desorption to apply in short-term, laboratory-spiked pristine sediments; and (4) interparticle diffusion can be fully understood in terms of a model that couples molecular diffusion of uranium species in the porewater with equilibrium sorption under the relevant aqueous conditions. The primary focus of the work was on developing and applying both models and experiments to test the applicability of "local equilibrium" assumptions in the modeling interpretation of sorption retarded interparticle diffusion, as relevant to processes of U(VI) diffusion in silt/clay layers. Batch isotherm experiments were first used to confirm sorption isotherms under the intended test conditions and diffusion cell experiments were then conducted to explore the diffusion hypotheses. Important new information was obtained about the role of aqueous calcium and solid calcium carbonate in controlling sorption equilibrium with Hanford sediments. The retarded interparticle diffusion model with local sorption equilibrium was shown to very successfully simulate diffusion at high aqueous concentration of U(VI). By contrast, however, diffusion data obtained at low concentration suggested nonequilibrium of sorption even at diffusion time scales. Such nonequilibrium effects at low concentration are likely to be the result of sorption retarded intraparticle diffusion, and strong U(VI) sorption in the low concentration range.

Bai, Jing; Dong, Wenming; Ball, William P.

2006-10-12T23:59:59.000Z

102

Reduction of Cr(VI) under acidic conditions by the facultative Fe(III)-reducing bacterium Acidiphilium cryptum  

SciTech Connect (OSTI)

The potential for biological reduction of Cr(VI) under acidic conditions was evaluated with the acidophilic, facultatively metal-reducing bacterium Acidiphilium cryptum strain JF-5 to explore the role of acidophilic microorganisms in the Cr cycle in low-pH environments. An anaerobic suspension of washed A. cryptum cells rapidly reduced 50 M Cr(VI) at pH 3.2; biological reduction was detected from pH 1.7-4.7. The reduction product, confirmed by XANES analysis, was entirely Cr(III) that was associated predominantly with the cell biomass (70-80%) with the residual residing in the aqueous phase. Reduction of Cr(VI) showed a pH optimum similar to that for growth and was inhibited by 5 mM HgCl2, suggesting that the reaction was enzyme-mediated. Introduction of O2 into the reaction medium slowed the reduction rate only slightly, whereas soluble Fe(III) (as ferric sulfate) increased the rate dramatically, presumably by the shuttling of electrons from bioreduced Fe(II) to Cr(VI) in a coupled biotic-abiotic cycle. Starved cells could not reduce Cr(VI) when provided as sole electron acceptor, indicating that Cr(VI) reduction is not an energy-conserving process in A. cryptum. We speculate, rather, that Cr(VI) reduction is used here as a detoxification mechanism.

David E. Cummings; Scott Fendorf; Rajesh K. Sani; Brent M. Peyton; Timothy S. Magnuson

2007-01-01T23:59:59.000Z

103

USE OF MICRO X-RAY ABSORPTION SPECTROSCOPY AND DIFFRACTION TO DELINEATE Cr(VI) SPECIATION IN COPR  

SciTech Connect (OSTI)

The speciation of Cr(VI) in Cromite Ore Processing Residue was investigated by means of bulk XRD, and a combination of micro-XRF, -XAS and -XRD at the Advanced Light Source (ALS), Berkeley, CA, U.S.A.. Bulk XRD yielded one group of phases that contained explicitly Cr(VI) in their structure, Calcium Aluminum Chromium Oxide Hydrates, accounting for 60% of the total Cr(VI). Micro-analyses at ALS yielded complimentary information, confirming that hydrogarnets and hydrotalcites, two mineral groups that can host Cr(VI) in their structure by substitution, were indeed Cr(VI) sinks. Chromatite (CaCrO4) was also identified by micro-XRD, which was not possible with bulk methods due to its low content. The acquisition of micro-XRF elemental maps enabled not only the identification of Cr(VI)-binding phases, but also the understanding of their location within the matrix. This information is invaluable when designing Cr(VI) treatment, to optimize release and availability for reduction.

CHRYSOCHOOU, M.; MOON, D. H.; FAKRA, S.; MARCUS, M.; DERMATAS, D.; CHRISTODOULATOS, C.

2010-06-22T23:59:59.000Z

104

AFS-2 FLOWSHEET MODIFICATIONS TO ADDRESS THE INGROWTH OF PU(VI) DURING METAL DISSOLUTION  

SciTech Connect (OSTI)

In support of the Alternate Feed Stock Two (AFS-2) PuO{sub 2} production campaign, Savannah River National Laboratory (SRNL) conducted a series of experiments concluding that dissolving Pu metal at 95°C using a 6–10 M HNO{sub 3} solution containing 0.05–0.2 M KF and 0–2 g/L B could reduce the oxidation of Pu(IV) to Pu(VI) as compared to dissolving Pu metal under the same conditions but at or near the boiling temperature. This flowsheet was demonstrated by conducting Pu metal dissolutions at 95°C to ensure that PuO{sub 2} solids were not formed during the dissolution. These dissolution parameters can be used for dissolving both Aqueous Polishing (AP) and MOX Process (MP) specification materials. Preceding the studies reported herein, two batches of Pu metal were dissolved in the H-Canyon 6.1D dissolver to prepare feed solution for the AFS-2 PuO{sub 2} production campaign. While in storage, UV-visible spectra obtained from an at-line spectrophotometer indicated the presence of Pu(VI). Analysis of the solutions also showed the presence of Fe, Ni, and Cr. Oxidation of Pu(IV) produced during metal dissolution to Pu(VI) is a concern for anion exchange purification. Anion exchange requires Pu in the +4 oxidation state for formation of the anionic plutonium(IV) hexanitrato complex which absorbs onto the resin. The presence of Pu(VI) in the anion feed solution would require a valence adjustment step to prevent losses. In addition, the presence of Cr(VI) would result in absorption of chromate ion onto the resin and could limit the purification of Pu from Cr which may challenge the purity specification of the final PuO{sub 2} product. Initial experiments were performed to quantify the rate of oxidation of Pu(IV) to Pu(VI) (presumed to be facilitated by Cr(VI)) as functions of the HNO{sub 3} concentration and temperature in simulated dissolution solutions containing Cr, Fe, and Ni. In these simulated Pu dissolutions studies, lowering the temperature from near boiling to 95 °C reduced the oxidation rate of Pu(IV) to Pu(VI). For 8.1 M HNO{sub 3} simulated dissolution solutions, at near boiling conditions >35% Pu(VI) was present in 50 h while at 95 °C <10% Pu(VI) was present at 50 h. At near boiling temperatures, eliminating the presence of Cr and varying the HNO{sub 3} concentration in the range of 7–8.5 M had little effect on the rate of conversion of Pu(IV) to Pu(VI). HNO{sub 3} oxidation of Pu(IV) to Pu(VI) in a pure solution has been reported previously. Based on simulated dissolution experiments, this study concluded that dissolving Pu metal at 95°C using a 6 to 10 M HNO{sub 3} solution 0.05–0.2 M KF and 0–2 g/L B could reduce the rate of oxidation of Pu(IV) to Pu(VI) as compared to near boiling conditions. To demonstrate this flowsheet, two small-scale experiments were performed dissolving Pu metal up to 6.75 g/L. No Pu-containing residues were observed in the solutions after cooling. Using Pu metal dissolution rates measured during the experiments and a correlation developed by Holcomb, the time required to completely dissolve a batch of Pu metal in an H-Canyon dissolver using this flowsheet was estimated to require nearly 5 days (120 h). This value is reasonably consistent with an estimate based on the Batch 2 and 3 dissolution times in the 6.1D dissolver and Pu metal dissolution rates measured in this study and by Rudisill et al. Data from the present and previous studies show that the Pu metal dissolution rate decreases by a factor of approximately two when the temperature decreased from boiling (112 to 116°C) to 95°C. Therefore, the time required to dissolve a batch of Pu metal in an H-Canyon dissolver at 95°C would likely double (from 36 to 54 h) and require 72 to 108 h depending on the surface area of the Pu metal. Based on the experimental studies, a Pu metal dissolution flowsheet utilizing 6–10 M HNO{sub 3} containing 0.05–0.2 M KF (with 0–2 g/L B) at 95°C is recommended to reduce the oxidation of Pu(IV) to Pu(VI) as compared to near boiling conditions. The time required to completely di

Crapse, K.; Rudisill, T.; O'Rourke, P.; Kyser, E.

2014-07-02T23:59:59.000Z

105

In Situ Bioreduction of Uranium (VI) to Submicromolar Levels and Reoxidation by Dissolved Oxygen  

SciTech Connect (OSTI)

Groundwater within Area 3 of the U.S. Department of Energy (DOE) Environmental Remediation Sciences Program (ERSP) Field Research Center at Oak Ridge, TN (ORFRC) contains up to 135 {micro}M uranium as U(VI). Through a series of experiments at a pilot scale test facility, we explored the lower limits of groundwater U(VI) that can be achieved by in-situ biostimulation and the effects of dissolved oxygen on immobilized uranium. Weekly 2 day additions of ethanol over a 2-year period stimulated growth of denitrifying, Fe(III)-reducing, and sulfate-reducing bacteria, and immobilization of uranium as U(IV), with dissolved uranium concentrations decreasing to low levels. Following sulfite addition to remove dissolved oxygen, aqueous U(VI) concentrations fell below the U.S. Environmental Protection Agency maximum contaminant limit (MCL) for drinking water (<30 {micro}g L{sup -1} or 0.126 {micro}M). Under anaerobic conditions, these low concentrations were stable, even in the absence of added ethanol. However, when sulfite additions stopped, and dissolved oxygen (4.0-5.5 mg L{sup -1}) entered the injection well, spatially variable changes in aqueous U(VI) occurred over a 60 day period, with concentrations increasing rapidly from <0.13 to 2.0 {micro}M at a multilevel sampling (MLS) well located close to the injection well, but changing little at an MLS well located further away. Resumption of ethanol addition restored reduction of Fe(III), sulfate, and U(VI) within 36 h. After 2 years of ethanol addition, X-ray absorption near-edge structure spectroscopy (XANES) analyses indicated that U(IV) comprised 60-80% of the total uranium in sediment samples. At the completion of the project (day 1260), U concentrations in MLS wells were less than 0.1 {micro}M. The microbial community at MLS wells with low U(VI) contained bacteria that are known to reduce uranium, including Desulfovibrio spp. and Geobacter spp., in both sediment and groundwater. The dominant Fe(III)-reducing species were Geothrix spp.

Wu, Weimin [ORNL; Carley, Jack M [ORNL; Luo, Jian [Stanford University; Ginder-Vogel, Matthew A. [Stanford University; Cardenas, Erick [Michigan State University, East Lansing; Leigh, Mary Beth [Michigan State University, East Lansing; Hwang, Chaichi [Miami University, Oxford, OH; Kelly, Shelly D [Argonne National Laboratory (ANL); Ruan, Chuanmin [ORNL; Wu, Liyou [University of Oklahoma, Norman; Van Nostrand, Joy [University of Oklahoma, Norman; Gentry, Terry J [ORNL; Lowe, Kenneth Alan [ORNL; Mehlhorn, Tonia L [ORNL; Carroll, Sue L [ORNL; Luo, Wensui [ORNL; Fields, Matthew Wayne [Miami University, Oxford, OH; Gu, Baohua [ORNL; Watson, David B [ORNL; Kemner, Kenneth M [Argonne National Laboratory (ANL); Marsh, Terence [Michigan State University, East Lansing; Tiedje, James [Michigan State University, East Lansing; Zhou, Jizhong [University of Oklahoma, Norman; Fendorf, Scott [Stanford University; Kitanidis, Peter K. [Stanford University; Jardine, Philip M [ORNL; Criddle, Craig [ORNL

2007-01-01T23:59:59.000Z

106

Effects of Chromium(VI) and Chromium(III) on Desulfovibrio vulgaris Cells  

SciTech Connect (OSTI)

Desulfovibrio vulgaris ATCC 29579 is a well studied sulfate reducer that has known capabilities of reducing heavy metals and radionuclides, like chromium and uranium. Cultures grown in a defined medium (i.e. LS4D) had a lag period of approximately 40 h when exposed to 50 ?Mof Cr(VI). Substrate analysis revealed that although chromium is reduced within the first 5 h, growth does not resume for another 35 h. During this time, small amounts of lactate are still utilized but the reduction of sulfate does not occur. Sulfate reduction occurs concurrently with the accumulation of acetate approximately 40 h after inoculation, when growth resumes. Similar amounts of hydrogen are produced during this time compared to hydrogen production by cells not exposed to Cr(VI); therefore an accumulation of hydrogen cannot account for the utilization of lactate. There is a significant decrease in the carbohydrate to protein ratio at approximately 25 h, and this result indicated that lactate is not converted to glycogen. Most probable number analysis indicated that cell viability decreased steadily after inoculation and reached approximately 6 x 104 cells/ml 20 h post-chromium exposure. Regeneration of reducing conditions during chromium exposure does not induce growth and in fact may make the growth conditions even more unfavorable. This result suggested that an increase in Eh was not solely responsible for the decline in viability. Cell pellets collected 10 h after chromium-exposure were unable to resume growth when suspended into fresh medium. Supernatants from these pellets were able to support cell growth upon re- inoculation. D. vulgaris cells treated with a non-dose dependent addition of ascorbate at the same time of Cr(VI) addition did not enter a lag period. Ascorbate added 3 h post-Cr(VI) exposure did not prevent the growth lag. These results indicated that Desulfovibrio utilized lactate to reduce Cr(VI) without the reduction of sulfate, that the decline in cell viability and cell growth was most likely a consequence of Cr(III), and that an organic ligand could protect D. vulgaris cells from Cr(III) toxicity. Lactate consumption decoupled from sulfate reduction in the presence of Cr(VI) could provide organic carbon for organo- Cr(III) complexes.

M.E. Clark; A. Klonowska; S.B. Thieman; B. Giles; J.D. Wall; and M.W. Fields

2007-04-19T23:59:59.000Z

107

Rate-limited U(VI) desorption during a small-scale tracer test in a hetereogeneous uranium contaminated aquifer  

E-Print Network [OSTI]

of Contaminants in the Hanford Vadose Zone, Vadose Zone J. ,transport in a contaminated Hanford sediment, Environ. Sci.of U(VI) observed in Hanford sediment column experiments. A

Fox, P.M.

2013-01-01T23:59:59.000Z

108

Microbial community changes during sustained Cr(VI) reduction at the 100H site in Hanford, WA  

E-Print Network [OSTI]

at the 100H site in Hanford, WA Romy Chakraborty 1 , Eoin Lcontaminated aquifer at the Hanford (WA) 100H site in 2004.Cr(VI) reduction at Hanford, and a comparison of the

Chakraborty, Romy

2010-01-01T23:59:59.000Z

109

Influence of flow regime on U(VI) sorption kinetics in fine sediments at the Hanford site, Washington, USA.  

E-Print Network [OSTI]

??The effect of flow rate on U(VI) sorption kinetics was investigated by a series of column tests using the reactive mass fraction (<2mm) of sediments… (more)

Moser, Jessa V.

2012-01-01T23:59:59.000Z

110

Geoengineering en utvg? Hur allvarliga det nrmaste rhundradets klimatfrndringar blir vet vi inte. Utfallet  

E-Print Network [OSTI]

Geoengineering ­ en utväg? Hur allvarliga det närmaste århundradets klimatförändringar blir vet vi fantasieggande åtgärdsförslag som går under samlingsnamnet geoengineering, vilket på svenska möjligen skulle termen. Med geoengineering avses avsiktlig omstöpning av klimat och miljö på global skala. Den kanske

111

Heteroepitaxy of group IV-VI nitrides by atomic layer deposition  

SciTech Connect (OSTI)

Heteroepitaxial growth of selected group IV-VI nitrides on various orientations of sapphire (?-Al{sub 2}O{sub 3}) is demonstrated using atomic layer deposition. High quality, epitaxial films are produced at significantly lower temperatures than required by conventional deposition methods. Characterization of electrical and superconducting properties of epitaxial films reveals a reduced room temperature resistivity and increased residual resistance ratio for films deposited on sapphire compared to polycrystalline samples deposited concurrently on fused quartz substrates.

Klug, Jeffrey A., E-mail: jklug@anl.gov; Groll, Nickolas R.; Pellin, Michael J.; Proslier, Thomas, E-mail: prolier@anl.gov [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)] [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Becker, Nicholas G.; Cao, Chaoyue; Zasadzinski, John F. [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616 (United States); Weimer, Matthew S. [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Department of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616 (United States)

2013-11-18T23:59:59.000Z

112

TREATMENT TESTS FOR EX SITU REMOVAL OF CHROMATE & NITRATE & URANIUM (VI) FROM HANFORD (100-HR-3) GROUNDWATER FINAL REPORT  

SciTech Connect (OSTI)

This report describes batch and ion exchange column laboratory scale studies investigating ex situ methods to remove chromate (chromium [VI]), nitrate (NO{sub 3}{sup -}) and uranium (present as uranium [VI]) from contaminated Hanford site groundwaters. The technologies investigated include: chemical precipitation or coprecipitation to remove chromate and uranium; and anion exchange to remove chromate, uranium and nitrate. The technologies investigated were specified in the 100-HR-3 Groundwater Treatability Test Plan. The method suggested for future study is anion exchange.

BECK MA; DUNCAN JB

1994-01-03T23:59:59.000Z

113

Electrode Induced Removal and Recovery of Uranium (VI) from Acidic Subsurfaces  

SciTech Connect (OSTI)

The overarching objective of this research is to provide an improved understanding of how aqueous geochemical conditions impact the removal of U and Tc from groundwater and how engineering design may be utilized to optimize removal of these radionuclides. Experiments were designed to address the unique conditions in Area 3 of ORNL while also providing broader insight into the geochemical effectors of the removal rates and extent for U and Tc. The specific tasks of this work were to: 1) quantify the impact of common aqueous geochemical and operational conditions on the rate and extent of U removal and recovery from water, 2) investigate the removal of Tc with polarized graphite electrode, and determine the influence of geochemical and operational conditions on Tc removal and recovery, 3) determine whether U and Tc may be treated simultaneous from Area 3 groundwater, and examine the bench-scale performance of electrode-based treatment, and 4) determine the capacity of graphite electrodes for U(VI) removal and develop a mathematical, kinetic model for the removal of U(VI) from aqueous solution. Overall the body of work suggests that an electrode-based approach for the remediation of acidic subsurface environments, such as those observed in Area 3 of ORNL may be successful for the removal for both U(VI) and Tc. Carbonaceous (graphite) electrode materials are likely to be the least costly means to maximize removal rates and efficiency by maximizing the electrode surface area.

Gregory, Kelvin [Carnegie Mellon University

2013-08-12T23:59:59.000Z

114

Equations of state of ice VI and ice VII at high pressure and high temperature  

SciTech Connect (OSTI)

High-pressure H{sub 2}O polymorphs among which ice VI and ice VII are abundant in the interiors of large icy satellites and exo-planets. Knowledge of the elastic properties of these pure H{sub 2}O ices at high-temperature and high-pressure is thus crucial to decipher the internal structure of icy bodies. In this study we assess for the first time the pressure-volume-temperature (PVT) relations of both polycrystalline pure ice VI and ice VII at high pressures and temperatures from 1 to 9 GPa and 300 to 450 K, respectively, by using in situ synchrotron X-ray diffraction. The PVT data are adjusted to a second-order Birch-Murnaghan equation of state and give V{sub 0} = 14.17(2) cm{sup 3}?mol{sup ?1}, K{sub 0} = 14.05(23) GPa, and ?{sub 0} = 14.6(14) × 10{sup ?5} K{sup ?1} for ice VI and V{sub 0} = 12.49(1) cm{sup 3}?mol{sup ?1}, K{sub 0} = 20.15(16) GPa, and ?{sub 0} = 11.6(5) × 10{sup ?5} K{sup ?1} for ice VII.

Bezacier, Lucile; Hanfland, Michael [European Synchrotron Radiation Facility, 6 rue Jules Horowitz, 38000 Grenoble (France); Journaux, Baptiste; Perrillat, Jean-Philippe; Cardon, Hervé; Daniel, Isabelle [Laboratoire de Géologie de Lyon, UMR 5276 CNRS, Ecole Normale Supérieure de Lyon – Université Claude Bernard Lyon 1, 2 rue Raphael Dubois, 69622 Villeurbanne Cedex (France)

2014-09-14T23:59:59.000Z

115

Effect of Subgrid Heterogeneity on Scaling Geochemical and Biogeochemical Reactions: A Case of U(VI) Desorption  

SciTech Connect (OSTI)

The effect of subgrid heterogeneity in sediment properties on the rate of uranyl[U(VI)] desorption was investigated using a sediment collected from the US Department of Energy Hanford site. The sediment was sieved into 7 grain size fractions that each exhibited different U(VI) desorption properties. Six columns were assembled using the sediment with its grain size fractions arranged in different spatial configurations to mimic subgrid heterogeneity in reactive transport properties. The apparent rate of U(VI) desorption varied significantly in the columns. Those columns with sediment structures leading to preferential transport had much lower rates of U(VI) desorption than those with relatively homogeneous transport. Modeling analysis indicated that the U(VI) desorption model and parameters characterized from well-mixed reactors significantly over-predicted the measured U(VI) desorption in the columns with preferential transport. A dual domain model, which operationally separates reactive transport properties into two subgrid domains improved the predictions significantly. A similar effect of subgrid heterogeneity, albeit at a less degree, was observed for denitrification, which also occurred in the columns. The results imply that subgrid heterogeneity is an important consideration in extrapolating reaction rates from the laboratory to field.

Liu, Chongxuan; Shang, Jianying; Shan, Huimei; Zachara, John M.

2014-02-04T23:59:59.000Z

116

Investigations of HRC®-Stimulated Bioreduction of Cr(VI) at Hanford 100H  

SciTech Connect (OSTI)

Hypothesis: Lactate (Hydrogen Release Compound-HRC{trademark}) injection into chromium contaminated groundwater through an injection well will cause indirect or direct bioreduction of chromate [Cr(VI)] and precipitation of insoluble species of [Cr(III)] on soil particles, probably catalyzed at oxide surfaces, at the field scale. Objective: Assess the potential for immobilizing and detoxifying chromium-contaminated groundwater using lactate-stimulated bioreduction of Cr(VI) to Cr(III) at the Hanford Site's 100-H Area field site. Types of Research: A three-well system (injection well and upgradient and downgradient monitoring wells) was used for conducting the in situ biostimulation and monitoring. To assess the pre- and post-injection test groundwater conditions, we used an integrated monitoring approach, involving hydraulic, geochemical, microbial, and geophysical techniques and analytical methods, as well as conducted five Br-tracer injection tests and four pumping tests (concurrently with the Br-tracer tests). Groundwater biostimulation was conducted by injection of 40 lbs of {sup 13}C-labeled HRC into the injection well (over the depth interval from 44-50 ft) on 8/3/2004, followed by low-flow pumping (1.2 to 2.5 l/min) through the downgradient well (to ensure capture of groundwater flow lines passing through the injection well) for 27 days. Main Results: Although the total microbial population in sediments is relatively low (<10{sup 5} cells g-1) under background conditions, which is likely insufficient for direct enzymatic Cr(VI) reduction, several types of bacteria, e.g., Bacillus/Arthrobacter and Geobacter, are present in the Hanford sediments, which are known to reduce or sorb hexavalent chromium. The HRC injection stimulated microbial cell counts to reach the maximum of 2 x 10{sup 7} cells g{sup -1} 13-17 days after the injection, and generated highly reducing conditions. Geochemical and isotopic observations confirmed microbial metabolism of HRC. The Cr(VI) concentration in the monitoring and pumping wells decreased below drinking water minimum contaminant limits and remained below background concentrations even after 1.5 years, when redox conditions and microbial densities had returned to background levels. Fe(II) levels have remained high and may account for the continued reduction of Cr(VI).

T.C. Hazen; B. Faybishenko; D. Joyner; S. Borglin; E.Brodie; S. Hubbard; K. Williams; J. Peterson; J. Wan; T. Tokunaga; Long, P.E.; Newcomer, D.; Koenigsberg, S.; Willet, A.

2005-04-18T23:59:59.000Z

117

Investigations of HRC®-Stimulated Bioreduction of Cr(VI) at Hanford 100H  

SciTech Connect (OSTI)

Hypothesis: Lactate (Hydrogen Release Compound-HRC{trademark}) injection into chromium contaminated groundwater through an injection well will cause indirect or direct bioreduction of chromate [Cr(VI)] and precipitation of insoluble species of [Cr(III)] on soil particles, probably catalyzed at oxide surfaces, at the field scale. Objective: Assess the potential for immobilizing and detoxifying chromium-contaminated groundwater using lactate-stimulated bioreduction of Cr(VI) to Cr(III) at the Hanford Site's 100-H Area field site. Types of Research: A three-well system (injection well and upgradient and downgradient monitoring wells) was used for conducting the in situ biostimulation and monitoring. To assess the pre- and post-injection test groundwater conditions, we used an integrated monitoring approach, involving hydraulic, geochemical, microbial, and geophysical techniques and analytical methods, as well as conducted five Br-tracer injection tests and four pumping tests (concurrently with the Br-tracer tests). Groundwater biostimulation was conducted by injection of 40 lbs of {sup 13}C-labeled HRC into the injection well (over the depth interval from 44-50 ft) on 8/3/2004, followed by low-flow pumping (1.2 to 2.5 l/min) through the downgradient well (to ensure capture of groundwater flow lines passing through the injection well) for 27 days. Main Results: Although the total microbial population in sediments is relatively low (<10{sup 5} cells g{sup -1}) under background conditions, which is likely insufficient for direct enzymatic Cr(VI) reduction, several types of bacteria, e.g., Bacillus/Arthrobacter and Geobacter, are present in the Hanford sediments, which are known to reduce or sorb hexavalent chromium. The HRC injection stimulated microbial cell counts to reach the maximum of 2 x 10{sup 7} cells g{sup -1} 13-17 days after the injection, and generated highly reducing conditions. Geochemical and isotopic observations confirmed microbial metabolism of HRC. The CR(VI) concentration in the monitoring and pumping wells decreased below drinking water minimum contaminant limits and remained below background concentrations even after 1.5 years, when redox conditions and microbial densities had returned to background levels. Fe(II) levels have remained high and may account for the continued reduction of Cr(VI).

Hazen, T.C.; Faybishenko, B.; Joyner, D.; Borglin, S.; Brodie, E.; Hubbard, S.; Williams, K.; Peterson, J.; Wan, J.; Tokunaga, T.; Firestone, M.; Long, P.E.; Resch, C.T.; Cantrell, K.; Newcomer, D.; Koenigsberg, S.; Willet, A.

2006-04-05T23:59:59.000Z

118

Reactive oxygen species mediate Cr(VI)-induced carcinogenesis through PI3K/AKT-dependent activation of GSK-3?/?-catenin signaling  

SciTech Connect (OSTI)

Cr(VI) compounds are known human carcinogens that primarily target the lungs. Cr(VI) produces reactive oxygen species (ROS), but the exact effects of ROS on the signaling molecules involved in Cr(VI)-induced carcinogenesis have not been extensively studied. Chronic exposure of human bronchial epithelial cells to Cr(VI) at nanomolar concentrations (10–100 nM) for 3 months not only induced cell transformation, but also increased the potential of these cells to invade and migrate. Injection of Cr(VI)-stimulated cells into nude mice resulted in the formation of tumors. Chronic exposure to Cr(VI) increased levels of intracellular ROS and antiapoptotic proteins. Transfection with catalase or superoxide dismutase (SOD) prevented Cr(VI)-mediated increases in colony formation, cell invasion, migration, and xenograft tumors. While chronic Cr(VI) exposure led to activation of signaling cascades involving PI3K/AKT/GSK-3?/?-catenin and PI3K/AKT/mTOR, transfection with catalase or SOD markedly inhibited Cr(VI)-mediated activation of these signaling proteins. Inhibitors specific for AKT or ?-catenin almost completely suppressed the Cr(VI)-mediated increase in total and active ?-catenin proteins and colony formation. In particular, Cr(VI) suppressed autophagy of epithelial cells under nutrition deprivation. Furthermore, there was a marked induction of AKT, GSK-3?, ?-catenin, mTOR, and carcinogenic markers in tumor tissues formed in mice after injection with Cr(VI)-stimulated cells. Collectively, our findings suggest that ROS is a key mediator of Cr(VI)-induced carcinogenesis through the activation of PI3K/AKT-dependent GSK-3?/?-catenin signaling and the promotion of cell survival mechanisms via the inhibition of apoptosis and autophagy. - Highlights: • Chronic exposure to Cr(VI) induces carcinogenic properties in BEAS-2B cells. • ROS play an important role in Cr(VI)-induced tumorigenicity of BEAS-2B cells. • PI3K/AKT/GSK-3?/?-catenin signaling involved in Cr(VI) carcinogenesis. • The inhibition of apoptosis and autophagy contributes to Cr(VI) carcinogenesis.

Son, Young-Ok; Pratheeshkumar, Poyil; Wang, Lei; Wang, Xin; Fan, Jia; Kim, Dong-Hern; Lee, Ju-Yeon; Zhang, Zhuo [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536-0305 (United States); Lee, Jeong-Chae [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536-0305 (United States); School of Dentistry and Institute of Oral Biosciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju 561-756 (Korea, Republic of); Shi, Xianglin, E-mail: xshi5@email.uky.edu [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536-0305 (United States)

2013-09-01T23:59:59.000Z

119

Innovative Approach to Prevent Acid Drainage from Uranium Mill Tailings Based on the Application of Na-Ferrate (VI)  

SciTech Connect (OSTI)

The operation of uranium mining and milling plants gives rise to huge amounts of wastes from both mining and milling operations. When pyrite is present in these materials, the generation of acid drainage can take place and result in the contamination of underground and surface waters through the leaching of heavy metals and radionuclides. To solve this problem, many studies have been conducted to find cost-effective solutions to manage acid mine drainage; however, no adequate strategy to deal with sulfide-ric h wastes is currently available. Ferrate (VI) is a powerful oxidizing agent in aqueous media. Under acidic conditions, the redox potential of the Ferrate (VI) ion is the highest of any other oxidant used in wastewater treatment processes. The standard half cell reduction potential of ferrate (VI) has been determined as +2.20 V to + 0.72 V in acidic and basic solutions, respectively. Ferrate (VI) exhibits a multitude of advantageous properties, including higher reactivity and selectivity than traditional oxidant alternatives, as well as disinfectant, flocculating, and coagulant properties. Despite numerous beneficial properties in environmental applications, ferrate (VI) has remained commercially unavailable. Starting in 1953, different methods for producing a high purity, powdered ferrate (VI) product were developed. However, producing this dry, stabilized ferrate (VI) product required numerous process steps which led to excessive synthesis costs (over $20/lb) thereby preventing bulk industrial use. Recently a novel synthesis method for the production of a liquid ferrate (VI) based on hypochlorite oxidation of ferric ion in strongly alkaline solutions has been discovered (USPTO 6,790,428; September 14, 2004). This on-site synthesis process dramatically reduces manufacturing cost for the production of ferrate (VI) by utilizing common commodity feedstocks. This breakthrough means that for the first time ferrate (VI) can be an economical alternative to treating acid mining drainage generating materials. The objective of the present study was to investigate a methodology of preventing the generation of acid drainage by applying ferrate (VI) to acid generating materials prior to the disposal in impoundments or piles. Oxidizing the pyritic material in mining waste could diminish the potential for acid generation and its related environmental risks and long-term costs at disposal sites. The effectiveness of toxic metals removal from acid mine drainage by applying ferrate (VI) is also examined. Preliminary results presented in this paper show that the oxidation of pyrite by ferrate is a first-order rate reaction in Fe(VI) with a half-life of about six hours. The stability of Fe(VI) in water solutions will not influence the reaction rate in a significant manner. New low-cost production methods for making liquid ferrate on-site makes this technology a very attractive option to mitigate one of the most pressing environmental problems in the mining industry. (authors)

Fernandes, H.M.; Reinhart, D.; Lettie, L.; Franklin, M.R. [University of Central Florida, P.O. Box. 162450, Orlando, FL, 32816-2450 (United States); Fernandes, H.M.; Franklin, M.R. [Institute of Radiation Protection and Dosimetry (IRD), Av. Salvador Allende s/n - Recreio - Rio de Janeiro - RJ - 22795-090 (Brazil); Sharma, V. [Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901 (United States); Daly, L.J. [Ferrate Treatment Technologies, LLC, 6432 Pine Castle Blvd. Unit 2C, Orlando, FL, 32809 (United States)

2006-07-01T23:59:59.000Z

120

Actes du VI Congrs Latino Amricain de Sociologie Rurale, Sustentabilidad y Democratizacin de las Sociedades Rurales Latinoamericanas , Porto Alegre, Nov 2002.  

E-Print Network [OSTI]

1 Actes du VI Congrès Latino Américain de Sociologie Rurale, « Sustentabilidad y Democratización de

Boyer, Edmond

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121

Permeable Reactive Biobarriers for In Situ Cr(VI) Reduction: Bench Scale Tests Using Cellulomonas sp. Strain ES6  

SciTech Connect (OSTI)

Chromate (Cr(VI)) reduction studies were performed in bench scale flow columns using the fermentative subsurface isolate Cellulomonas sp. strain ES6. In these tests, columns packed with either quartz sand or hydrous ferric oxide (HFO)-coated quartz sand, were inoculated with strain ES6 and fed nutrients to stimulate growth before nutrient-free Cr(VI) solutions were injected. Results show that in columns containing quartz sand, a continuous inflow of 2 mg/L Cr(VI) was reduced to below detection limits in the effluent for durations of up to 5.7 residence times after nutrient injection was discontinued proving the ability of strain ES6 to reduce chromate in the absence of an external electron donor. In the HFO-containing columns, Cr(VI) reduction was significantly prolonged and effluent Cr(VI) concentrations remained below detectable levels for periods of up to 66 residence times after nutrient injection was discontinued. Fe was detected in the effluent of the HFO-containing columns throughout the period of Cr(VI) removal indicating that the insoluble Fe(III) bearing solids were being continuously reduced to form soluble Fe(II) resulting in prolonged abiotic Cr(VI) reduction. Thus, growth of Cellulomonas within the soil columns resulted in formation of permeable reactive barriers that could reduce Cr(VI) and Fe(III) for extended periods even in the absence of external electron donors. Other bioremediation systems employing Fe(II)-mediated reactions require a continuous presence of external nutrients to regenerate Fe(II). After depletion of nutrients, contaminant removal within these systems occurs by reaction with surface-associated Fe(II) that can rapidly become inaccessible due to formation of crystalline Fe-minerals or other precipitates. The ability of fermentative organisms like Cellulomonas to reduce metals without continuous nutrient supply in the subsurface offers a viable and economical alternative technology for in situ remediation of Cr(VI)-contaminated groundwater through formation of permeable reactive biobarriers (PRBB).

Sridhar Viamajala; Brent M. Peyton; Robin Gerlach; Vaideeswaran; William A. Apel; James N. Petersen

2008-12-01T23:59:59.000Z

122

Optimizing Cr(VI) and Tc(VII) remediation through nano-scale biomineral engineering  

SciTech Connect (OSTI)

To optimize the production of biomagnetite for the bioremediation of metal oxyanion contaminated waters, the reduction of aqueous Cr(VI) to Cr(III) by two biogenic magnetites and a synthetic magnetite was evaluated under batch and continuous flow conditions. Results indicate that nano-scale biogenic magnetite produced by incubating synthetic schwertmannite powder in cell suspensions of Geobacter sulfurreducens is more efficient at reducing Cr(VI) than either biogenic nano-magnetite produced from a suspension of ferrihydrite 'gel' or synthetic nano-scale Fe{sub 3}O{sub 4} powder. Although X-ray Photoelectron Spectroscopy (XPS) measurements obtained from post-exposure magnetite samples reveal that both Cr(III) and Cr(VI) are associated with nanoparticle surfaces, X-ray Magnetic Circular Dichroism (XMCD) studies indicate that some Cr(III) has replaced octahedrally coordinated Fe in the lattice of the magnetite. Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) measurements of total aqueous Cr in the associated solution phase indicated that, although the majority of Cr(III) was incorporated within or adsorbed to the magnetite samples, a proportion ({approx}10-15 %) was released back into solution. Studies of Tc(VII) uptake by magnetites produced via the different synthesis routes also revealed significant differences between them as regards effectiveness for remediation. In addition, column studies using a {gamma}-camera to obtain real time images of a {sup 99m}Tc(VII) radiotracer were performed to visualize directly the relative performances of the magnetite sorbents against ultra-trace concentrations of metal oxyanion contaminants. Again, the magnetite produced from schwertmannite proved capable of retaining more ({approx}20%) {sup 99m}Tc(VII) than the magnetite produced from ferrihydrite, confirming that biomagnetite production for efficient environmental remediation can be fine-tuned through careful selection of the initial Fe(III) mineral substrate supplied to Fe(III)-reducing bacteria.

Cutting, R. S.; Coker, V. S.; Telling, N. D.; Kimber, R. L.; Pearce, C. I.; Ellis, B.; Lawson, R; van der Laan, G.; Pattrick, R.A.D.; Vaughan, D.J.; Arenholz, E.; Lloyd, J. R.

2009-09-09T23:59:59.000Z

123

Uranium(VI) Diffusion in Low-Permeability Subsurface Materials. | EMSL  

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124

Abiotic U(VI) Reduction by Sorbed Fe(II) on Natural Sediments. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects of GlobalASCRAbigail Ferrieri AbigailU(VI)

125

First use of a HyViSI H4RG for Astronomical Observations  

SciTech Connect (OSTI)

We present the first astronomical results from a 4K2 Hybrid Visible Silicon PIN array detector (HyViSI) read out with the Teledyne Scientific and Imaging SIDECAR ASIC. These results include observations of astronomical standards and photometric measurements using the 2.1m KPNO telescope. We also report results from a test program in the Rochester Imaging Detector Laboratory (RIDL), including: read noise, dark current, linearity, gain, well depth, quantum efficiency, and substrate voltage effects. Lastly, we highlight results from operation of the detector in window read out mode and discuss its potential role for focusing, image correction, and use as a telescope guide camera.

Simms, Lance M.; /SLAC; Figer, Donald F.; Hanold, Brandon J.; Kerr, Daniel J.; /Rochester Imaging Lab.; Gilmore, D.Kirk; Kahn, Steven M.; /SLAC; Tyson, J.Anthony; /UC,

2007-09-25T23:59:59.000Z

126

ARM - Field Campaign - ARM Airborne Carbon Measurements (ARM-ACME VI)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience4AJ01)3, 2010September 30,JuneMayIII ARM DatagovCampaignsARESE IIV)VI)

127

Microbial community changes during sustained Cr(VI) reduction at the 100H site in Hanford, WA  

SciTech Connect (OSTI)

Hexavalent Chromium is a widespread contaminant found in soil, sediment, and groundwater. In order to stimulate microbially-mediated reduction of Cr(VI), a poly-lactate compound (HRC) was injected into the Chromium-contaminated aquifer at the Hanford (WA) 100H site in 2004. Cr(VI) concentrations rapidly declined to below the detection limit and remained so for more than three years after injection. Based on the results of the bacterial community composition using high-density DNA 16S rRNA gene microarrays, we observed the community to transition through denitrifying, ironreducing and sulfate-reducing populations. As a result, we specifically focused isolation efforts on three bacterial species that were significant components of the community. Positive enrichments in defined anaerobic media resulted in the isolation of an iron-reducing Geobacter metallireducens-like isolate, a sulfate-reducing Desulfovibrio vukgaris-like strain and a nitrate-reducing Pseudomonas stutzeri-like isolate among several others. All of these isolates were capable of reducing Cr(VI) anoxically and have been submitted for genome sequencing to JGI. To further characterize the microbial, and geochemical mechanisms associated with in situ Cr(VI) reduction at the site, additional HRC was injected in 2008. The goal was to restimulate the indigenous microbial community and to regenerate the reducing conditions necessary for continued Cr(VI) bio-immobilization in the groundwater. Analysis of the microbial populations post-injection revealed that they recovered to a similar density as after the first injection in 2004. In this study, we present the results from our investigation into microbially-mediated Cr(VI) reduction at Hanford, and a comparison of the microbial community development following two HRC injections four years apart.

Chakraborty, Romy; Brodie, Eoin L; Faybishenko, Boris; Piceno, Yvette M; Tom, Lauren; Choudhuri, Swati; Beller, Harry R; Liu, Jenny; Torok, Tamas; Joyner, Dominique C; Joachimiak, Marcin P; Zhou, Aifen; Van Nostrand, Joy D; Zhou, Joe; Long, Phil E; Newcomer, Darrell R; Andersen, Gary L; Hazen, Terry C.

2010-05-17T23:59:59.000Z

128

Compared performances of ENDF/B-VI and JEF-2.2 for MOX core physics  

SciTech Connect (OSTI)

The United States is currently evaluating the use of mixed-oxide (MOX) fuel in commercial light water reactors for reducing weapons-grade Pu stockpiles. The design and licensing processes will require that the validity of the nuclear data libraries and codes used in the effort be demonstrated. Unfortunately, there are only a very limited number of relatively old and nonrepresentative integral experiments freely available to the US programs. This lack of adequate experimental data can be partially remediated by comparing the results of well-validated European codes with the results of candidate US codes. The authors have compared the performances of the JEF-2.2 and ENDF/B-VI.4 libraries for a series of benchmarks for k{sub eff}, void worth, and pin power distributions. Note that JEF-2.2 has been extensively validated for MOX applications. To obtain systematic comparisons between JEF-2.2 and ENDF/B-VI results, the two libraries were implemented with the same processing code options in two independent code systems: (1) VIM, a continuous-energy Monte Carlo code developed at Argonne National Laboratory, with its own processing codes independent of NJOY; and (2) DRAGON, a two-dimensional lattice code developed at Ecole Polytechnique de Montreal. A standard 172-energy-group structure was used in the NJOY processing code.

Finck, P.J.; Laurin-Kovitz, K.; Palmiotti, G.; Stenberg, C. [Argonne National Lab., IL (United States)

1998-12-31T23:59:59.000Z

129

Uranium (VI)Bis(imido) chalcogenate complexes:synthesis and density functional theory analysis  

SciTech Connect (OSTI)

Bis(imido) uranium(VI) trans- and cis-dichalcogenate complexes with the general formula U(NtBu)2(EAr)2(OPPh3)2 (EAr = O-2-tBuC6H4, SPh, SePh, TePh) and U(NtBu)2(EAr)2(R2bpy) (EAr = SPh, SePh, TePh) (R2bpy = 4,4'-disubstituted-2,2'-bipyridyl, R = Me, tBu) have been prepared. This family of complexes includes the first reported monodentate selenolate and tellurolate complexes of uranium(VI). Density functional theory calculations show that covalent interactions in the U-E bond increase in the trans-dichalcogenate series U(NtBu)2(EAr)2(OPPh3)2 as the size of the chalcogenate donor increases and that both 5f and 6d orbital participation is important in the M-E bonds of U-S, U-Se, and U-Te complexes.

Spencer, Liam P [Los Alamos National Laboratory; Batista, Enrique R [Los Alamos National Laboratory; Boncella, James M [Los Alamos National Laboratory; Yang, Ping [Los Alamos National Laboratory; Scott, Brian L [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

130

Microbial Community Changes in Response to Ethanol or Methanol Amendments for U(VI) Reduction  

SciTech Connect (OSTI)

Microbial community responses to ethanol, methanol and methanol + humics amendments in relationship to uranium bioremediation were studied in laboratory microcosm experiments using sediments and ground water from a uranium-contaminated site in Oak Ridge, Tennessee. Ethanol addition always resulted in uranium reduction at rate of 0.8-1.0 mol l-1 d-1 while methanol addition did so occasionally at rate 0.95 mol l-1 d-1. The type of carbon source added, the duration of incubation, and the sampling site influenced the bacterial community structure upon incubation. Analysis of 16S rRNA gene clone libraries indicated (1) bacterial communities found in ethanol- and methanol-amended samples with U(VI) reduction were similar due to presence of -Proteobacteria, and -Proteobacteria (members of the families Burkholderiaceae, Comamonadaceae, Oxalobacteraceae, and Rhodocyclaceae); (2) methanol-amended samples without U(VI) reduction exhibited the lowest diversity and the bacterial community contained 69.2-92.8% of the family Methylophilaceae; and (3) the addition of humics resulted in an increase of phylogenetic diversity of -Proteobacteria (Rodoferax, Polaromonas, Janthinobacterium, Methylophilales, unclassified) and Firmicutes (Desulfosporosinus, Clostridium).

Vishnivetskaya, Tatiana A [ORNL; Brandt, Craig C [ORNL; Madden, Andrew [University of Oklahoma, Norman; Drake, Meghan M [ORNL; Kostka, Joel [Florida State University; Akob, Denise M. [Florida State University; Kusel, Kirsten [Friedrich Schiller University Jena, Jena Germany; Palumbo, Anthony Vito [ORNL

2010-01-01T23:59:59.000Z

131

A modified model for calculating lattice thermal expansion of I{sub 2}-IV-VI{sub 3} and I{sub 3}-V-VI{sub 4} tetrahedral compounds  

SciTech Connect (OSTI)

A general empirical formula was found for calculating lattice thermal expansion for compounds having their properties extended for compound groups having different mean ionicity as well as more than one type of cation atoms with that of different numbers of them such as I{sub 2}-IV-VI{sub 3} and I{sub 3}-V-VI{sub 4}. The difference in the valence electrons for cations and anions in the compound was used to correlate the deviations caused by the compound ionicity. The ionicity effects, which are due to their different numbers for their types, were also added to the correlation equation. In general, the lattice thermal expansion for a compound semiconductor can be calculated from a relation containing melting point, mean atomic distance and number of valence electrons for the atoms forming the compound. The mean ionicity for the group compounds forming I{sub 2}-IV-VI{sub 3} was found to be 0.323 and 0.785 for the ternary group compounds of I{sub 3}-V-VI{sub 4}.

Omar, M.S. [Department of Physics, College of Science, University of Salahaddin, Arbil, Kurdistan (Iraq)]. E-mail: dr_m_s_omar@yahoo.com

2007-05-03T23:59:59.000Z

132

Complexation of U(VI) with 1-Hydroxyethane-1,1-diphosphonicAcid (HEDPA) in Acidic to Basic Solutions  

SciTech Connect (OSTI)

Complexation of U(VI) with 1-hydroxyethane-1,1-diphosphonic acid (HEDPA) in acidic to basic solutions has been studied with multiple techniques. A number of 1:1 (UO{sub 2}H{sub 3}L), 1:2 (UO{sub 2}H{sub j}L{sub 2} where j = 4, 3, 2, 1, 0 and -1) and 2:2 ((UO{sub 2}){sub 2}H{sub j}L{sub 2} where j = 1, 0 and -1) complexes form, but the 1:2 complexes are the major species in a wide pH range. Thermodynamic parameters (formation constants, enthalpy and entropy of complexation) were determined by potentiometry and calorimetry. Data indicate that the complexation of U(VI) with HEDPA is exothermic, favored by the enthalpy of complexation. This is in contrast to the complexation of U(VI) with dicarboxylic acids in which the enthalpy term usually is unfavorable. Results from electrospray ionization mass spectrometry (ESI-MS) and {sup 31}P NMR have confirmed the presence of 1:1, 1:2 and 2:2 U(VI)-HEDPA complexes.

Reed, W A; Rao, L; Zanonato, P; Garnov, A; Powell, B A; Nash, K L

2007-01-24T23:59:59.000Z

133

VI Simpsio Brasileiro de Solos No Saturados 2007/ Salvador-Bahia 321 Estimation of the Hydraulic Conductivity Function of Unsaturated  

E-Print Network [OSTI]

VI Simpósio Brasileiro de Solos Não Saturados 2007/ Salvador-Bahia 321 Estimation of the Hydraulic Simpósio Brasileiro de Solos Não Saturados 2007/ Salvador-Bahia 1.2 Prediction of the K-function Early

Zornberg, Jorge G.

134

All-vapor processing of p-type tellurium-containing II-VI semiconductor and ohmic contacts thereof  

DOE Patents [OSTI]

An all dry method for producing solar cells is provided comprising first heat-annealing a II-VI semiconductor; enhancing the conductivity and grain size of the annealed layer; modifying the surface and depositing a tellurium layer onto the enhanced layer; and then depositing copper onto the tellurium layer so as to produce a copper tellurium compound on the layer.

McCandless, Brian E. (Elkton, MD)

2001-06-26T23:59:59.000Z

135

6999Federal Register / Vol. 71, No. 28 / Friday, February 10, 2006 / Proposed Rules vi. Federal Rules That May Duplicate,  

E-Print Network [OSTI]

March 9, 2006. ADDRESSES: The hearing will be in room 154 of the U.S. Federal Office Building, 222 W. 7 for submitting comments. · Mail: P. O Box 21668, Juneau, AK 99802 · Hand delivery to the Federal Building : 709 W6999Federal Register / Vol. 71, No. 28 / Friday, February 10, 2006 / Proposed Rules vi. Federal

136

VI-8.00(B) UMCP POLICY ON STUDENT ALCOHOL AND OTHER DRUG ABUSE APPROVED BY PRESIDENT SEPTEMBER 9, 1992  

E-Print Network [OSTI]

VI-8.00(B) UMCP POLICY ON STUDENT ALCOHOL AND OTHER DRUG ABUSE APPROVED BY PRESIDENT SEPTEMBER 9, 1992 I. Policy The University of Maryland at College Park is dedicated to the pursuit and dissemination of drugs and alcohol. In keeping with this commitment, it is the policy of the University that the illegal

Li, Teng

137

Evidence for ice VI as an inclusion in cuboid diamonds from high P-T near infrared spectroscopy  

E-Print Network [OSTI]

Evidence for ice VI as an inclusion in cuboid diamonds from high P-T near infrared spectroscopy H.W., Washington, D.C. 20015-1305, USA ABSTRACT Near infrared absorption (NIR) spectra of natural morphologically on heating to 1208C. The combination band of H2O at high pressure and temperature was measured using

Hemley, Russell J.

138

Model-based Analysis of Mixed Uranium(VI) Reduction by Biotic and Abiotic Pathways During in Situ Bioremediation  

SciTech Connect (OSTI)

Uranium bioremediation has emerged as a potential strategy of cleanup of radionuclear contamination worldwide. An integrated geochemical & microbial community model is a promising approach to predict and provide insights into the bioremediation of a complicated natural subsurface. In this study, an integrated column-scale model of uranium bioremediation was developed, taking into account long-term interactions between biotic and abiotic processes. It is also combined with a comprehensive thermodynamic analysis to track the fate and cycling of biogenic species. As compared with other bioremediation models, the model increases the resolution of the connection of microbial community to geochemistry and establishes direct quantitative correlation between overall community evolution and geochemical variation, thereby accurately predicting the community dynamics under different sedimentary conditions. The thermodynamic analysis examined a recently identified homogeneous reduction of U(VI) by Fe(II) under dynamic sedimentary conditions across time and space. It shows that the biogenic Fe(II) from Geobacter metabolism can be removed rapidly by the biogenic sulphide from sulfate reducer metabolism, hence constituting one of the reasons that make the abiotic U(VI) reduction thermodynamically infeasible in the subsurface. Further analysis indicates that much higher influent concentrations of both Fe(II) and U(VI) than normal are required to for abiotic U(VI) reduction to be thermodynamically feasible, suggesting that the abiotic reduction cannot be an alternative to the biotic reduction in the remediation of uranium contaminated groundwater.

Zhao, Jiao; Scheibe, Timothy D.; Mahadevan, Radhakrishnan

2013-10-24T23:59:59.000Z

139

Myosin VI is required for structural integrity of the apical surface of sensory hair cells in zebrafish  

E-Print Network [OSTI]

Myosin VI is required for structural integrity of the apical surface of sensory hair cells deafness in humans and deafness in Snell's waltzer mice associated with abnormal fusion of hair cell and epithelial morphogenesis, the role of this protein in the sensory hair cells remains unclear. To investigate

Avraham, Karen

140

Influence of calcite on uranium(VI) reactive transport in the groundwater–river mixing zone  

SciTech Connect (OSTI)

Calcite is an important mineral that can affect uranyl reactive transport in subsurface sediments. This study investigated the distribution of calcite and its influence on uranyl adsorption and reactive transport in the groundwater-river mixing zone at US Hanford 300A, Washington State. Simulations using a 2D reactive transport model under field-relevant hydrogeochemical conditions revealed a complex distribution of calcite concentration as a result of dynamic groundwater-river interactions. The calcite concentration distribution in turn affected the spatial and temporal changes in aqueous carbonate, calcium, and pH, which subsequently influenced U(VI) mobility and discharge rates into the river. The results implied that calcite distribution and its concentration dynamics is an important consideration for field characterization, monitoring, and reactive transport prediction.

Ma, Rui; Liu, Chongxuan; Greskowiak, Janek; Prommer, Henning; Zachara, John M.; Zheng, Chunmiao

2014-01-23T23:59:59.000Z

Note: This page contains sample records for the topic "ytown gran vi" from the National Library of EnergyBeta (NLEBeta).
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141

Coextraction behavior of Tc(VII) and U(VI) by CMPO  

SciTech Connect (OSTI)

The coextraction behavior of technetium(VII) and uranium(VI) from nitric acid solution by n-octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) in the absence or presence of tributyl phosphate (TBP) was investigated. The extraction of technetium was remarkably enhanced in the presence of uranium at less than 0.1M nitric acid concentration, and with the initial concentration ratio of [U]/[Tc] = 50 in the aqueous phase, the distribution coefficient of Tc(VII) at 0.01M nitric acid was about one hundred times greater than that obtained in the absence of uranium. The coextraction of technetium and uranium was presumed to occur due to the same ion exchange mechanism as reported in the Tc-U-TBP system. However, the effect of TBP on this coextraction was not observed in the present study. 17 refs., 8 figs.

Takeuchi, Mitsuo; Tanaka, Satoru; Yamawaki, Michio (Univ. of Tokyo, Ibaraki (Japan)); Tachimori, Shoichi (Japan Atomic Energy Research Inst., Ibaraki (Japan))

1995-01-01T23:59:59.000Z

142

Bianchi type-VI anisotropic dark energy model with varying EoS parameter  

E-Print Network [OSTI]

Within the scope of an anisotropic Bianchi type-VI cosmological model we have studied the evolution of the universe filled with perfect fluid and dark energy. To get the deterministic model of Universe, we assume that the shear scalar $(\\sigma)$ in the model is proportional to expansion scalar $(\\vartheta)$. This assumption allows only isotropic distribution of fluid. Exact solution to the corresponding equations are obtained. The EoS parameter for dark energy as well as deceleration parameter is found to be the time varying functions. Using the observational data qualitative picture of the evolution of the universe corresponding to different of its stages is given. The stability of the solutions obtained is also studied.

Bijan Saha

2012-09-26T23:59:59.000Z

143

Calculation of the electron structure of vacancies and their compensated states in III-VI semiconductors  

SciTech Connect (OSTI)

The Green's functions theory and the bond-orbital model are used as a basis for calculations of the electron structure of local defects-specifically, vacancies and their compensated states in III-VI semiconductors. The energy levels in the band gap are established, and the changes induced in the electron densities in the GaS, GaSe, and InSe semiconductors by anion and cation vacancies and their compensated states are calculated. It is established that, if a vacancy is compensated by an atom of an element from the same subgroup with the same tetrahedral coordination and if the ionic radius of the compensating atom is smaller than that of the substituted atom, the local levels formed by the vacancy completely disappear. It is shown that this mechanism of compensation of vacancies provides a means not only for recovering the parameters of the crystal, but for improving the characteristics of the crystal as well.

Mehrabova, M. A., E-mail: Mehrabova@mail.ru; Madatov, R. S. [Azerbaijan National Academy of Sciences, Institute of Radiation Problems (Azerbaijan)

2011-08-15T23:59:59.000Z

144

Acceleration of Microbially Mediated U(VI) Reduction at a Uranium Mill Tailings Site, Colorado Plateau  

SciTech Connect (OSTI)

A second field-scale electron donor amendment experiment was conducted in 2003 at the Old Rifle Uranium Mill Tailings Remedial Action (UMTRA) site in Rifle, Colorado. The objective of the 2003 experiment (done in collaboration with the U.S. Department of Energy's UMTRA Groundwater Project) was to test the hypothesis that amendment of increased concentration of electron donor would result in an increased export of electron donor down gradient which in turn would create a larger zone of down-gradient U(VI) bioreduction sustained over a longer time period relative to the 2002 experiment (Anderson et al. 2003). During the first experiment (2002), {approx}3 mM acetate was amended to subsurface over a period of 3 months in a 15m by 18m by 2.5m volume comprised of 3 upgradient monitoring wells, 20 injection wells, and 15 down-gradient monitoring wells. After an initial one-month phase of metal reduction, bioavailable oxidized Fe was consumed near the injection gallery and the dominant terminal electron accepting process became sulfate reduction, rapidly consuming the injected acetate. For the 2003 experiment, we amended sufficient acetate ({approx}10 mM) to consume available sulfate and export acetate down-gradient where bioavailable oxidized Fe was still present. Data from the experiment indicate that acetate was exported further down gradient, resulting in a larger zone of microbial U(VI) reduction than for the 2002 experiment. Geohydrologic, geochemical, and microbiological data collected during the course of both experiments enable assessment of relative importance of a number of factors controlling the experimental outcomes. Companion posters by Anderson et al. and White et al. provide additional results.

Phil Long; Todd Anderson; Aaron Peacock; Steve Heald; Yun-Juan Chang; Dick Dayvault; Derek R. Lovley; C.T. Resch; Helen Vrionis; Irene Ortiz-Bernad; D.C. White

2004-03-17T23:59:59.000Z

145

Thermodynamic stabilities of U(VI) minerals: Estimated and observed relationships  

SciTech Connect (OSTI)

Gibbs free energies of formation ({Delta}G{degree}{sub f}) for several structurally related U(VI) minerals are estimated by summing the Gibbs energy contributions from component oxides. The estimated {Delta}G{degree}{sub f} values are used to construct activity-activity (stability) diagrams, and the predicted stability fields are compared with observed mineral occurrences and reaction pathways. With some exceptions, natural occurrences agree well with the mineral stability fields estimated for the systems SiO{sub 2}-CaO-UO{sub 3}-H{sub 2}O and CO{sub 2}-CaO-UO{sub 3}H{sub 2}O, providing confidence in the estimated thermodynamic values. Activity-activity diagrams are sensitive to small differences in {Delta}G{degree}{sub f} values, and mineral compositions must be known accurately, including structurally bound H{sub 2}O. The estimated {Delta}G{degree}{sub f} values are not considered reliable for a few minerals for two major reasons: (1) the structures of the minerals in question are not closely similar to those used to estimate the {Delta}G{sub f}* values of the component oxides, and/or (2) the minerals in question are exceptionally fine grained, leading to large surface energies that increase the effective mineral solubilities. The thermodynamic stabilities of uranium(VI) minerals are of interest for understanding the role of these minerals in controlling uranium concentrations in oxidizing groundwaters associated with uranium ore bodies, uranium mining and mill tailings and geological repositories for nuclear waste.

Finch, R.J. [Univ. of Manitoba, Winnipeg, Manitoba (Canada)

1996-12-31T23:59:59.000Z

146

Characterizing particle-scale equilibrium adsorption and kinetics of uranium(VI) desorption from U-contaminated sediments  

SciTech Connect (OSTI)

Rates of contaminant U(VI) release from individual size fractions of a composite sediment from the seasonally saturated lower vadose zone of the Hanford 300-Area were examined in flow-through batch reactors to maintain quasi-constant chemical conditions. Variability in equilibrium adsorption among the various size fractions was determined in static batch reactors and analyzed using the surface complexation modeling approach. The estimated stoichiometric coefficients of U(VI) surface complexation reactions with respect to pH and carbonate concentrations varied with size fractions. This source of variability significantly increased the uncertainty in U(VI) conditional equilibrium constants over that estimated from experimental errors alone. A minimum difference between conditional equilibrium constants was established in order to evaluate statistically significant differences between sediment adsorption properties. A set of equilibrium and kinetic expressions for cation exchange, calcite dissolution, aerobic respiration, and silica dissolution were incorporated in a reaction-rate model to describe the temporal evolution of solute concentrations observed during the flow-through batch experiments. Parameters in the reaction-rate model, calibrated using experimental data for select size fractions, predicted the changes in solute concentrations for the bulk, <2 mm, sediment sample. Kinetic U(VI) desorption was well described using a multi-rate surface complexation model with an assumed lognormal distribution for the rate constants. The estimated mean and standard deviation were the same for all < 2mm size fractions, but differed in the 2-8mm size fraction. Micropore volumes in the varied size fractions were also similar as assessed using t-plots to analyze N2 desorption data. These findings provide further support for the link between microporosity and particle-scale mass transfer rates controlling kinetic U(VI) adsorption/desorption and for the utility of N2 desorption isotherms for characterizing pore networks that influence mass transfer rates.

Stoliker, Deborah L.; Liu, Chongxuan; Kent, Douglas B.; Zachara, John M.

2013-02-12T23:59:59.000Z

147

Similarity of the Surface Reactivity of Hydrous Ferric Oxide and Hematite: Sorption and Redox of U(VI) and Fe(II)  

SciTech Connect (OSTI)

Hydrous Ferric Oxide (HFO) vs. Hematite--Thermodynamically distinctive bulk phases, but the surfaces could be similar due to hydration of the interface. Hypothesis--The surface of HFO is energetically similar to the surface of hematite. Objective--Compare the reactions of HFO and hematite with U(VI) and Fe(II). Experimental--The reactions of interests were (1) preparation of sub-micron hematite, (2) sorption of U(VI), and (3) redox of U(VI) and Fe(II) with HFO or hematite.

Je-Hun Jang; Dempsey, Brian A.; Burgos, William D.; Yeh, George; Roden, Eric

2004-03-17T23:59:59.000Z

148

O. DONY-HNAULT. 2014 Sur la radio-activit du peroxyde d'hydrogne. Travaux du laboratoire de l'Institut Physiologie. Solvay. t. VI. f 03.  

E-Print Network [OSTI]

l'Institut Physiologie. Solvay. t. VI. f 03. L'eau oxygénée a la propriété d'émettre les radiations

Paris-Sud XI, Université de

149

Spatially resolved U(VI) partitioning and speciation: Implications for plume scale behavior of contaminant U in the Hanford vadose zone  

E-Print Network [OSTI]

EM/GJ1302- 2006, Stoller Hanford Office, Richland, WA. 2006.characterization of U(VI) in Hanford vadose zone poreUranium Geochemistry at the Hanford Site. Pacific Northwest

Wan, Jiamin

2009-01-01T23:59:59.000Z

150

A Conceptual model of coupled biogeochemical and hydrogeological processes affected by in situ Cr(VI) bioreduction in groundwater at Hanford 100H Site  

E-Print Network [OSTI]

in Groundwater at Hanford 100H Site B.Faybishenko, P.E.Long,Cr(VI) contaminated groundwater at Hanford 100H site. A slowHRC TM ), was injected in Hanford sediments to stimulate

2006-01-01T23:59:59.000Z

151

ELECTRONIC SOLUTION SPECTRA FOR URANIUM AND NEPTUNIUM IN OXIDATION STATES (III) TO (VI) IN ANHYDROUS HYDROGEN FLUORIDE  

SciTech Connect (OSTI)

Spectra have been recorded for solutions in anhydrous hydrogen fluoride (AHF) of uranium and neptunium in oxidation states (III) to (VI). The spectra for U(III), Np(III) and Np(IV) in AHF are very similar to those in acidified aqueous solution, but that for U(IV) suggests that the cationic species is UF{sub 2}{sup 2+}. The AHF spectra for the elements in oxidation states (V) and (VI) are not comparable with those of the formally analogous aqueous solutions, where the elements exist as well-defined dioxo-cations. However, the AHF spectra can be related to spectra in the gas phase, in the solid state or in non-aqueous solvents for each element in its appropriate oxidation state.

Baluka, M.; Edelstein, N.; O'Donnell, T. A.

1980-10-01T23:59:59.000Z

152

Upscaling of Long-Term U(VI) Desorption from Pore Scale Kinetics to Field-Scale Reactive Transport Models  

SciTech Connect (OSTI)

The focus of the project is the development of scientifically defensible approaches for upscaling reactive transport models (RTM) through a detailed understanding of U(VI) desorption across several spatial scales: bench-, intermediate-, and field-scales. The central hypothesis of the project is that the development of this methodology will lead to a scientifically defensible approach for conceptual model development for multicomponent RTM at contaminated DOE sites, leading to predictive transport simulations with reduced uncertainty.

Steefel, Carl I.; Li Li; Davis, J.A.; Curtis, G.P.; Honeyman, B.D.; Kent, D.B.; Kohler, M.; Rodriguez, D.R.; Johnson, K.J.; Miller, A.

2006-06-01T23:59:59.000Z

153

Methods for forming thin-film heterojunction solar cells from I-III-VI{sub 2}  

DOE Patents [OSTI]

An improved thin-film, large area solar cell, and methods for forming the same are disclosed, having a relatively high light-to-electrical energy conversion efficiency and characterized in that the cell comprises a p-n type heterojunction formed of: (i) a first semiconductor layer comprising a photovoltaic active material selected from the class of I-III-VI{sub 2} chalcopyrite ternary materials which is vacuum deposited in a thin ``composition-graded`` layer ranging from on the order of about 2.5 microns to about 5.0 microns ({approx_equal}2.5 {mu}m to {approx_equal}5.0 {mu}m) and wherein the lower region of the photovoltaic active material preferably comprises a low resistivity region of p-type semiconductor material having a superimposed region of relatively high resistivity, transient n-type semiconductor material defining a transient p-n homojunction; and (ii) a second semiconductor layer comprising a low resistivity n-type semiconductor material; wherein interdiffusion occurs (a) between the elemental constituents of the two discrete juxtaposed regions of the first semiconductor layer defining a transient p-n homojunction layer, and (b) between the transient n-type material in the first semiconductor layer and the second n-type semiconductor layer. 16 figs.

Mickelsen, R.A.; Chen, W.S.

1985-08-13T23:59:59.000Z

154

Compared performances of ENDF/B-VI and JEF-2.2 for MOX core physics.  

SciTech Connect (OSTI)

The US is currently evaluating the use of MOX fuel in commercial LWR's for reducing weapons grade Pu stockpiles. The design and licensing processes will require that the validity of the nuclear data libraries and codes used in the effort be demonstrated. Unfortunately, there are only a very limited number of relatively old and non representative integral experiments' freely available to the US programs. This lack of adequate experimental data can be partially remediated by comparing the results of well validated European codes with the results of candidate US codes. The demonstration can actually be divided in two components: a code to code (Monte Carlo) comparison can easily demonstrate the validity and limits of the proposed algorithms; and the performances of nuclear data libraries should be compared, major trends should be observed, and their origins should be explained in terms of differences in evaluated nuclear data; In this paper, we have compared the performances of the JEF-2.2 and ENDF/B-VI.4 libraries for a series of benchmarks for k{sub eff}, void worth, and pin power distributions. Note that JEF-2.2 has been extensively validated for MOX applications.

Finck, P. J.

1998-07-08T23:59:59.000Z

155

Methods for forming thin-film heterojunction solar cells from I-III-VI.sub. 2  

DOE Patents [OSTI]

An improved thin-film, large area solar cell, and methods for forming the same, having a relatively high light-to-electrical energy conversion efficiency and characterized in that the cell comprises a p-n type heterojunction formed of: (i) a first semiconductor layer comprising a photovoltaic active material selected from the class of I-III-VI.sub.2 chalcopyrite ternary materials which is vacuum deposited in a thin "composition-graded" layer ranging from on the order ot about 2.5 microns to about 5.0 microns (.congruent.2.5 .mu.m to .congruent.5.0 .mu.m) and wherein the lower region of the photovoltaic active material preferably comprises a low resistivity region of p-type semiconductor material having a superimposed region of relatively high resistivity, transient n-type semiconductor material defining a transient p-n homojunction; and (ii), a second semiconductor layer comprising a low resistivity n-type semiconductor material; wherein interdiffusion (a) between the elemental constituents of the two discrete juxtaposed regions of the first semiconductor layer defining a transient p-n homojunction layer, and (b) between the transient n-type material in the first semiconductor layer and the second n-type semiconductor layer, causes the The Government has rights in this invention pursuant to Contract No. EG-77-C-01-4042, Subcontract No. XJ-9-8021-1 awarded by the U.S. Department of Energy.

Mickelsen, Reid A. (Bellevue, WA) [Bellevue, WA; Chen, Wen S. (Seattle, WA) [Seattle, WA

1985-08-13T23:59:59.000Z

156

Diamylamylphosphonate solvent extraction of Am(VI) from nuclear fuel raffinate simulant solution  

SciTech Connect (OSTI)

The separation of hexavalent americium from the lanthanides in simulated PUREX raffinate solution using 1 M diamylamylphosphonate in dodecane extraction was investigated. Hexavalent americium was prepared using room-temperature sodium bismuthate oxidation. Under these conditions the majority of the lanthanides were not oxidized and remained inextractable. A separation factor of approximately 50 was provided for americium from europium over the nitric acid concentration range 6–7 M. Cerium was the exception with oxidation to CeIV resulting in its co-extraction with AmVI. However, since americium is readily reduced to AmIII it was easily stripped with a dilute acidic solution of hydrogen peroxide. Although hydrogen peroxide also reduces cerium, it does so slowly, and a selective americium strip was achieved, with a separation factor of between 15–25. Alternatively, since americium spontaneously reduced in the loaded organic phase, samples allowed to stand for 2 hours could be selectively stripped of americium by contact with 1 M HNO3 containing no additional reagents. The implications for use in fuel cycle separations are discussed.

Bruce J. Mincher; Leigh R. Martin; Nicholas C. Schmitt

2012-08-01T23:59:59.000Z

157

Influence of phosphate and silica on U(VI) precipitation from acidic and neutralized wastewaters  

SciTech Connect (OSTI)

Uranium speciation and physical-chemical characteristics were studied in solids precipitated from synthetic acidic to circumneutral wastewaters in the presence and absence of dissolved silica and phosphate to examine thermodynamic and kinetic controls on phase formation. Composition of synthetic wastewater was based on disposal sites 216-U-8 and 216-U-12 Cribs at the Hanford site (WA, USA). In the absence of dissolved silica or phosphate, crystalline or amorphous uranyl oxide hydrates, either compreignacite or meta-schoepite, precipitated at pH 5 or 7 after 30 d of reaction, in agreement with thermodynamic calculations. In the presence of 1 mM dissolved silica representative of groundwater concentrations, amorphous phases dominated by compreignacite precipitated rapidly at pH 5 or 7 as a metastable phase and formation of poorly-crystalline boltwoodite, the thermodynamically stable uranyl silicate phase, was slow. In the presence of phosphate (3 mM), meta-ankoleite initially precipitated as the primary phase at pH 3, 5, or 7 regardless of the presence of 1 mM dissolved silica. Analysis of precipitates by U LIII-edge EXAFS indicated that “autunite-type” sheets of meta-ankoleite transformed to “phosphuranylite-type” sheets after 30 d of reaction, probably due to Ca substitution in the structure. Low solubility of uranyl phosphate phases limits dissolved U(VI) concentrations but differences in particle size, crystallinity, and precipitate composition vary with pH and base cation concentration, which will influence the thermodynamic and kinetic stability of these phases.

Kanematsu, Masakazu; Perdrial, Nicolas; Um, Wooyong; Chorover, Jon; O'Day, Peggy A.

2014-04-22T23:59:59.000Z

158

Near-Infrared Photoluminescence Enhancement in Ge/CdS and Ge/ZnS Core/Shell Nanocrystals: Utilizing IV/II-VI Semiconductor Epitaxy  

SciTech Connect (OSTI)

Ge nanocrystals have a large Bohr radius and a small, size-tunable band gap that may engender direct character via strain or doping. Colloidal Ge nanocrystals are particularly interesting in the development of near-infrared materials for applications in bioimaging, telecommunications and energy conversion. Epitaxial growth of a passivating shell is a common strategy employed in the synthesis of highly luminescent II–VI, III–V and IV–VI semiconductor quantum dots. Here, we use relatively unexplored IV/II–VI epitaxy as a way to enhance the photoluminescence and improve the optical stability of colloidal Ge nanocrystals. Selected on the basis of their relatively small lattice mismatch compared with crystalline Ge, we explore the growth of epitaxial CdS and ZnS shells using the successive ion layer adsorption and reaction method. Powder X-ray diffraction and electron microscopy techniques, including energy dispersive X-ray spectroscopy and selected area electron diffraction, clearly show the controllable growth of as many as 20 epitaxial monolayers of CdS atop Ge cores. In contrast, Ge etching and/or replacement by ZnS result in relatively small Ge/ZnS nanocrystals. The presence of an epitaxial II–VI shell greatly enhances the near-infrared photoluminescence and improves the photoluminescence stability of Ge. Ge/II–VI nanocrystals are reproducibly 1–3 orders of magnitude brighter than the brightest Ge cores. Ge/4.9CdS core/shells show the highest photoluminescence quantum yield and longest radiative recombination lifetime. Thiol ligand exchange easily results in near-infrared active, water-soluble Ge/II–VI nanocrystals. We expect this synthetic IV/II–VI epitaxial approach will lead to further studies into the optoelectronic behavior and practical applications of Si and Ge-based nanomaterials.

Guo, Yijun [Ames Laboratory; Rowland, Clare E [Argonne National Laboratory; Schaller, Richard D [Argonne National Laboratory; Vela, Javier [Ames Laboratory

2014-08-26T23:59:59.000Z

159

SANS study of third phase formation in the U(VI)-HNO{sub 3}/ TBP-n-dodecane system.  

SciTech Connect (OSTI)

In spite of its technological importance, third phase formation in the extraction of hexavalent actinides from nitric acid solutions into alkane solutions of tri-n-butylphosphate (TBP) has received only limited attention. The focus of the few available literature works has been primarily centered on the composition of the third phase and on the stoichiometry of the metal complexes. Very little is known, on the other hand, about the structure and morphology of the third phase species of hexavalent actinides. In the present investigation, the formation of a third phase upon extraction of U(VI) by 20% TBP in deuterated n-dodecane from nitric acid solutions was studied. Chemical analyses have shown that U(VI) exists in the third phase as a species having the composition UO{sub 2}(NO{sub 3}){sub 2}{center_dot}(TBP){sub 2}{center_dot}HNO{sub 3}. Small-angle neutron scattering measurements on TBP solutions loaded with only HNO{sub 3} or with increasing amounts of U(VI) have revealed the presence, both before and after phase splitting, of relatively large ellipsoidal aggregates with the parallel and perpendicular axes having lengths up to about 64 and 15 Angstroms, respectively. The formation of these aggregates is observed in all cases, that is, when only HNO3, only UO{sub 2}(NO{sub 3}){sub 2}, or both HNO{sub 3} and UO{sub 2}(NO{sub 3}){sub 2} are extracted by the TBP solution. Upon third phase formation, the SANS data reveal the presence of smaller aggregates in both the heavy and light organic phase.

Chiarizia, R.; Jensen, M. P.; Borkowski, M.; Ferraro, J. R.; Thiyagarajan, P.; Littrell, K. C.

2003-01-01T23:59:59.000Z

160

Effect of temperature on the extraction of uranium(VI) from nitric acid by tri-n-amyl phosphate  

SciTech Connect (OSTI)

Studies have been carried out on the effect of temperature on the extraction of U(VI) from nitric acid medium by tri-n-amyl phosphate/n-dodecane, measured as a function of the extractant concentration and aqueous phase acidity. The results indicate that the extraction is exothermic as in the case of tri-n-butyl phosphate. From the data available an effort has been made to calculate the equilibrium constant, the Gibbs energy change and the entropy changes of the extraction reaction. 21 refs., 3 figs., 4 tabs.

Srinivasan, T.G.; Rao, P.R.V. [Indira Gandhi Centre for Atomic Research, Kalpakkam (India); Sood, D.D. [Indira Gandhi Centre for Atomic Research, Kalpakkam (India)]|[BARC, Mumbai (India)

1997-01-01T23:59:59.000Z

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


161

"Aegean Seals of the Late Bronze Age: Stylistic Groups, VI. Fourteenth Century Mainland and Later Fourteenth Century Cretan Workshops"  

E-Print Network [OSTI]

Island Sanctuaries Group sW 17 /G\\I M:t4R ) oV &+W 14 6\\w 16 12 10 50 John G. Younger Fig. 1 1-5: Columbia Gtoup 6*8: Group with Misplaced Fotelegs 9: Group with Crossed Hocks m, 53Aegean seals of the Late Bronze Age VI 37 Fig. 4 31 -38: Rhodian Hunt.... 'Ihe Group with Misplaced Forelegs 3. The Group with Crossed Hocks 4. The Group with Wicked Eyes B. The Island Sanctuaries Clroup (p.61) 5. The Central Island Sanctuaties Group 6. The Rhodian Hunt Group 7. The Island Sanctuaries Group: Miscellaneous...

Younger, John G.

1986-01-01T23:59:59.000Z

162

The O VI Absorbers Toward PG0953+415: High Metallicity, Cosmic-Web Gas Far From Luminous Galaxies  

E-Print Network [OSTI]

The spectrum of the low-redshift QSO PG0953+415 shows two strong, intervening O VI absorption systems. To study the nature of these absorbers, we have used the Gemini Multiobject Spectrograph to conduct a deep spectroscopic galaxy redshift survey in the 5' x 5' field centered on the QSO. This survey is fully complete for r' web. Evidently, some regions of the web filaments are highly metal enriched. We discuss the origin of the high-metallicity gas and suggest that the enrichment might have occurred long ago (at high z).

Todd M. Tripp; Bastien Aracil; David V. Bowen; Edward B. Jenkins

2006-04-19T23:59:59.000Z

163

Effects of Electromagnetic Field on the Dynamics of Bianchi type $VI_0$ Universe with Anisotropic Dark Energy  

E-Print Network [OSTI]

Spatially homogeneous and anisotropic Bianchi type $VI_0$ cosmological models with cosmological constant are investigated in the presence of anisotropic dark energy. We examine the effects of electromagnetic field on the dynamics of the universe and anisotropic behavior of dark energy. The law of variation of the mean Hubble parameter is used to find exact solutions of the Einstein field equations. We find that electromagnetic field promotes anisotropic behavior of dark energy which becomes isotropic for future evolution. It is concluded that the isotropic behavior of the universe model is seen even in the presence of electromagnetic field and anisotropic fluid.

M. Sharif; M. Zubair

2010-08-04T23:59:59.000Z

164

Microsoft Word - ViArray_Fact_ Sheet_SAND2011-3935P_updated_format.docx  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource Program Preliminary Needs535:UFC 2300.004/2013AprilViA Tru Sandia N

165

Subsurface Biogeochemical Heterogeneity (Field-scale removal of U(VI) from groundwater in an alluvial aquifer by electron donor amendment)  

SciTech Connect (OSTI)

Determine if biostimulation of alluvial aquifers by electron donor amendment can effectively remove U(VI) from groundwater at the field scale. Uranium contamination in groundwater is a significant problem at several DOE sites. In this project, the possibility of accelerating bioreduction of U(VI) to U(IV) as a means of decreasing U(VI) concentrations in groundwater is directly addressed by conducting a series of field-scale experiments. Scientific goals include demonstrating the quantitative linkage between microbial activity and U loss from groundwater and relating the dominant terminal electron accepting processes to the rate of U loss. The project is currently focused on understanding the mechanisms for unexpected long-term ({approx}2 years) removal of U after stopping electron donor amendment. Results obtained in the project successfully position DOE and others to apply biostimulation broadly to U contamination in alluvial aquifers.

Long, Philip E.; Derek R. Lovley; A. L. N’Guessan; Kelly Nevin; C. T. Resch; Evan Arntzen; Jenny Druhan; Aaron Peacock; Brett Baldwin; Dick Dayvault; Dawn Holmes; Ken Williams; Susan Hubbard; Steve Yabusaki; Yilin Fang; D.C. White; John Komlos; Peter Jaffe

2006-06-01T23:59:59.000Z

166

VI-Band Follow-Up Observations of Ultra-Long-Period Cepheid Candidates in M31  

E-Print Network [OSTI]

The ultra-long period Cepheids (ULPCs) are classical Cepheids with pulsation periods exceeding $\\approx 80$ days. The intrinsic brightness of ULPCs are ~1 to ~3 mag brighter than their shorter period counterparts. This makes them attractive in future distance scale work to derive distances beyond the limit set by the shorter period Cepheids. We have initiated a program to search for ULPCs in M31, using the single-band data taken from the Palomar Transient Factory, and identified eight possible candidates. In this work, we presented the VI-band follow-up observations of these eight candidates. Based on our VI-band light curves of these candidates and their locations in the color-magnitude diagram and the Period-Wesenheit diagram, we verify two candidates as being truly ULPCs. The six other candidates are most likely other kinds of long-period variables. With the two confirmed M31 ULPCs, we tested the applicability of ULPCs in distance scale work by deriving the distance modulus of M31. It was found to be $\\mu_...

Ngeow, Chow-Choong; Yang, Michael Ting-Chang; Lin, Chi-Sheng; Hsiao, Hsiang-Yao; Cheng, Yu-Chi; Lin, Zhong-Yi; Lin, I-Ling; Kanbur, Shashi M; Ip, Wing-Huen

2015-01-01T23:59:59.000Z

167

A flowsheet concept for an Am/Ln separation based on Am{sup VI} solvent extraction  

SciTech Connect (OSTI)

The separation of Am from the lanthanides and curium is a key step in proposed advanced fuel cycle scenarios. The partitioning and transmutation of Am is desirable to minimize the long-term radiotoxicity of material interred in a future high-level waste repository. However, a separation amenable to process scale-up remains elusive. Higher oxidation states of americium have recently been used to demonstrate solvent extraction-based separations using conventional fuel cycle ligands. Here, the successful partitioning of Am{sup VI} from the bulk of lanthanides and curium using diamyl-amyl-phosphonate (DAAP) extraction is reported. Due to the instability of Am{sup VI} in the organic phase it was readily selectively stripped to a new acidic aqueous phase to provide separation from co-extracted Ce{sup IV}. The use of NaBiO{sub 3} as an oxidant to separate Am from the lanthanides and Cm by solvent extraction has been successfully demonstrated on the bench scale. Based on these results, flowsheet concepts can be designed that result in 96 % Am recovery in the presence of a few percent of the remaining Cm and the lanthanides in two extraction contacts. Preliminary results also indicate that the DAAP extractant is robust toward ?- irradiation under realistic conditions of acidity and dissolved oxygen concentration.

Mincher, B.J.; Law, J.D. [Idaho National Laboratory, PO Box 1625, Idaho Falls, ID 83415 (United States)

2013-07-01T23:59:59.000Z

168

A Tungsten(VI) Nitride Having a W2(-N)2 Core Zachary J. Tonzetich, Richard R. Schrock,* Keith M. Wampler, Brad C. Bailey,  

E-Print Network [OSTI]

A Tungsten(VI) Nitride Having a W2(µ-N)2 Core Zachary J. Tonzetich, Richard R. Schrock,* Keith M-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 Received September 27, 2007 The tungsten that the tungsten alkylidyne species W(C-t-Bu)(CH2-t-Bu)(OAr)2 (Ar ) 2,6-diisopropylphenyl) can be prepared readily

Müller, Peter

169

Sequential Extraction Method for Determination of Fe(II/III) and U(IV/ VI) in Suspensions of Iron-Bearing Phyllosilicates and Uranium  

E-Print Network [OSTI]

-Bearing Phyllosilicates and Uranium Fubo Luan and William D. Burgos*, Department of Civil and Environmental Engineering Information ABSTRACT: Iron-bearing phyllosilicates strongly influence the redox state and mobility of uranium-times more Fe(II) than U(VI). INTRODUCTION Uranium contamination is a problem at many U.S. Department

Burgos, William

170

VI Simpsio Brasileiro de Solos No Saturados 2007/ Salvador-Bahia 421 Relao Entre a Resistncia a Trao Obtida via Ensaio  

E-Print Network [OSTI]

VI Simpósio Brasileiro de Solos Não Saturados 2007/ Salvador-Bahia 421 Relação Entre a Resistência Saturados 2007/ Salvador-Bahia uma maior atenção vem sendo dada a este tipo de mecanismo, especialmente por

Zornberg, Jorge G.

171

Preservation of Our World in the Wake of Change, Vol. VI A/B ISEEQS Pub. Jerusalem, Israel, 1996. Editor: Y. Steinberger  

E-Print Network [OSTI]

553 Preservation of Our World in the Wake of Change, Vol. VI A/B ISEEQS Pub. Jerusalem, Israel, Jerusalem 91904, Israel and G. Schiller Department of Field Crops and Natural Resources, Agricultural components. In wind- dispersed species, for example, selection for dispersal capacity may often favor small

Nathan, Ran

172

Growth of alternating (1OO)/(lll )-oriented II-VI regions for quasi-phase-matched nonlinear optical devices on GaAs substrates  

E-Print Network [OSTI]

ferroelectrics such as lithium nio- bate and potassium titanyl phosphate. Efficient operation is possible) nonlinear interactions. II-VI semiconductors, with transparency from the far in- frared to the visible phasematched interactions.' A powerful alternative technique, QPM, re- quires periodic patterning of the sign

Fejer, Martin M.

173

Chromium Remediation or Release? Effect of Iron(II) Sulfate Addition on Chromium(VI) Leaching from Columns of Chromite Ore Processing Residue   

E-Print Network [OSTI]

Chromite ore processing residue (COPR), derived from the so-called high lime processing of chromite ore, contains high levels of Cr(III) and Cr(VI) and has a pH between 11 and 12. Ferrous sulfate, which is used for ...

Geelhoed, Jeanine S; Meeussen, Johannes CL; Roe, Martin J; Hillier, Stephen; Thomas, Rhodri P; Farmer, John G; Paterson, Edward

2003-01-01T23:59:59.000Z

174

VI INTERNATIONAL TELECOMMUNICATIONS SYMPOSIUM (ITS2006), SEPTEMBER 3-6, 2006, FORTALEZA-CE, BRAZIL 1 Fringe Benefits of the H.264/AVC  

E-Print Network [OSTI]

of the Motion Picture Experts Groups (MPEG) from the International Standards Organization (ISO) and of the VideoVI INTERNATIONAL TELECOMMUNICATIONS SYMPOSIUM (ITS2006), SEPTEMBER 3-6, 2006, FORTALEZA-CE, BRAZIL, and Tiago A. Fonseca Abstract-- H.264/AVC is the newest, state-of-the-art, video compression standard

de Queiroz, Ricardo L.

175

VI 1.50 Policy on the Reporting of Suspected Child Abuse and Neglect (Approved by the Board of Regents on December 9, 2011)  

E-Print Network [OSTI]

1 VI ­ 1.50 Policy on the Reporting of Suspected Child Abuse and Neglect (Approved by the Board of Regents on December 9, 2011) I. PURPOSE The purpose of this policy is to provide guidance to staff into contact with the USM community. II. AUTHORITY The reporting requirements addressed in this policy

Milchberg, Howard

176

The Regulation of Salmonella Typhi Vi Capsular Antigen Expression in Intestinal Model Epithelia and the Bovine Ligated-Ileal Loop Model  

E-Print Network [OSTI]

Salmonella enterica serovar Typhi, a major public health concern in developing countries, continues to be a priority for the World Health Organization. S. Typhi possesses a viaB locus responsible for the biosynthesis of the Vi-capsular antigen, a...

Tran, Quynh Tien-Ngoc

2010-10-12T23:59:59.000Z

177

A review of "King James VI and I and his English Parliaments" by Conrad Russell, edited by Richard Cust and Andrew Thrush  

E-Print Network [OSTI]

. It is the Duke?s #23; nal speech?the one explaining why things happened the way you thought that they would probably happen?that you really want to hear. Conrad Russell, King James VI and I and his English Parliaments. Edited by Richard Cust and Andrew #22...

Peacey, Jason

2012-01-01T23:59:59.000Z

178

WVU FY 2009Expanding West Virginia's Economy WE s t Vi rg i n i a U n i V E r s i t y  

E-Print Network [OSTI]

WVU FY 2009Expanding West Virginia's Economy WE s t Vi rg i n i a U n i V E r s i t y: amy The opinions herein reflect those of the authors and do not reflect those of the West Virginia University Board Direct expenditures from West Virginia University led to a total economic impact of approximately $4

Mohaghegh, Shahab

179

AN ORIGIN FOR THE SOUTH POLE-AITKEN BASIN THORIUM. V.I. Chikmachev, S.G.Pugacheva, Sternberg State Astronomical institute. Moscow University.  

E-Print Network [OSTI]

AN ORIGIN FOR THE SOUTH POLE-AITKEN BASIN THORIUM. V.I. Chikmachev, S.G.Pugacheva, Sternberg State, that within the limits of the possible Al-Khwarizmi/King basin [3]. The SPA basin thorium map: The using data Lunar Prospector [4] the thorium distribution map demonstrated a hemisphere of the Moon which contains

Chikmachov, Vadim I.

180

Living Village K i o n i Vi l l a g e , I t h a c a , G r e e c e  

E-Print Network [OSTI]

A A Western Washington University | 2010 #12;Living | Village Kioni Village Ithaca, Greece Sustainable IthacaLiving Village K i o n i Vi l l a g e , I t h a c a , G r e e c e A X Nicholas Zaferatos Zaferatos, Sustainable Ithaca Faculty Program Director, at nicholas.zaferatos@wwu.edu #12;Table of Contents

Zaferatos, Nicholas C.

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


181

PROBING THE INTERGALACTIC MEDIUM/GALAXY CONNECTION. V. ON THE ORIGIN OF Ly? AND O VI ABSORPTION AT z < 0.2  

E-Print Network [OSTI]

We analyze the association of galaxies with Ly? and O VI absorption, the most commonly detected transitions of the low-z intergalactic medium (IGM), in the fields of 14 quasars with z[subscript em] = 0.06–0.57. Confirming ...

Prochaska, J. Xavier

182

A Spectroscopic Study of the effect of Ligand Complexation on the Reduction of Uranium(VI) by Anthraquinone-2,6-disulfonate (AH2DS)  

SciTech Connect (OSTI)

In this project, the reduction rate of uranyl complexes with hydroxide, carbonate, EDTA, and Desferriferrioxamine B (DFB) by anthraquinone-2,6-disulfonate (AH2DS), a potential electron shuttle for microbial reduction of metal ions (Newman and Kolter 2000), is studied by stopped-flow kinetics techniques under anoxic atmosphere. The apparent reaction rates varied with ligand type, solution pH, and U(VI) concentration. For each ligand, a single largest kobs within the studied pH range was observed, suggesting the influence of pH-dependent speciation on the U(VI) reduction rate. The maximum reaction rate found in each case followed the order of OH- > CO32- > EDTA > DFB, consistent with the same trend of the thermodynamic stability of the uranyl complexes and ionic sizes of the ligands. Increasing the stability of uranyl complexes and ligand size decreased the maximum reduction rate. The pH-dependent rates were modeled using a second-order rate expression that was assumed to be dependent on a single U(VI) complex and AH2DS species. By quantitatively comparing the calculated and measured apparent rate constants as a function of pH, species AHDS3- was suggested as the primary reductant in all cases examined. Species UO2CO3(aq) , UO2HEDTA-, and (UO2)2(OH)22+ were suggested as the principal electron acceptors among the U(VI) species mixture in carbonate, EDTA, and hydroxyl systems, respectively.

Wang, Zheming; Wagnon, Ken B.; Ainsworth, Calvin C.; Liu, Chongxuan; Rosso, Kevin M.; Fredrickson, Jim K.

2008-11-03T23:59:59.000Z

183

Applications of ENDF/B-VI and JENDL-3.1 iron data to reactor pressure vessel fluence analysis using continuous energy Monte Carlo code MCNP  

SciTech Connect (OSTI)

A comparison is made of results obtained from neutron transmissions analysis of RPV performed by MCNP with ENDF/B-VI and JENDL-3.1 iron data. At first, a one-dimensional discrete ordinates transport calculation using VITAMIN-C fine-group library based on ENDF/B-IV was performed for a cylindrical model of a PWR to generate the source spectrum at the front of the RPV. And then, the transmission of neutrons through RPV was calculated by MCNP with the moderated fission spectrum incident on the vessel face. For these ENDF/B-IV, -VI and JENDL-3.1 iron data were processed into continuous energy point data form by NJOY91.91. The fast neutron fluxes and dosimeter reaction rates through RPV using each iron data were intercompared.

Kim, Jungo-Do; Gil, Choong-Sup [Korea Atomic Energy Research Institute, Taejon (Korea, Democratic People`s Republic of)

1994-12-31T23:59:59.000Z

184

In pursuit of clean air: a data book of problems and strategies at the state level. Volume 3: Federal Regions IV and VI  

SciTech Connect (OSTI)

This is the third volume of a five-volume report, designed to provide useful information for policy analysis in the Department of Energy, especially for the examination of possible areas of conflict between the implementation of a national energy policy calling for the increased use of coal and the pursuit of clean air. Information is presented for each state in Federal Regions IV and VI under the following section headings: state title page (includes a summary of air quality data); revised state implementation plan outline; maps of nonattainment areas, as designated; Storage and Retrieval of Aerometric Data (SAROAD); SAROAD data maps; power plant data; power plant maps; and county maps. States in Federal Region IV include: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee. Those in Federal Region VI include: Arkansas, Louisiana, New Mexico, Oklahoma, and Texas. (JGB)

Garvey, D.B.; Streets, D.G.

1980-02-01T23:59:59.000Z

185

Ppn. SoL Snow Deplh Observer Vis. Vi;,. Vis. 00 in. 0 in. S5 J5 mi. mi. \\7 mi.  

E-Print Network [OSTI]

. Vi;,. Vis. 00 in. 0 in. S5 J5 mi. mi. \\7 mi. #12;..,- . M I~ · , \\f: ':'0 ll)A.\\I~S· Jb/ Ii I i. $".7~in. 0700 1300 1900 R.H. 24 hr. Mov. Clds. Clds. Clds.Sea L. - ! 0lU/l() .:. flOS-~ '/c. - mi. 30. Vis.Ppn. Sol. Snow Depth Observer a ~Sin. mi. J5 1111. mi.Q.O in. \\/ \\7_____~_____._._!O

Thompson, Anne

186

FINAL REPORT FOR THE REDUCTION OF CHROME (VI) TO CHROME (III) IN THE SECONDARY WASTE STREAM OF THE EFFLUENT TREATMENT FACILITY  

SciTech Connect (OSTI)

This report documents the laboratory results of RPP-PLAN-35958, Test Plan for the Effluent Treatment Facility to Reduce Chrome (VI) to Chrome (III) in the Secondary Waste Stream With the exception of the electrochemical corrosion scans, all work was carried out at the Center for Laboratory Science (CLS) located at the Columbia Basin College. This document summarizes the work carried out at CLS and includes the electrochemical scans and associated corrosion rates for 304 and 316L stainless steel.

DUNCAN JB; GUTHRIE MD

2008-08-29T23:59:59.000Z

187

CIMAT, VI Escuela de verano, 25 de julio 7 de agosto 1999 Introducci'on a la Geometr'ia de la Mec'anica Cl'asica  

E-Print Network [OSTI]

parametrizada por (x(t); â?? x(t)): (d) Dibujar las gr'aficas de su energ'ia cin'etica T = ( â?? x) 2 =2 y potencial­ vaci'on de energ'ia, E = T + V = constante: (e) Repetir los 4 incisos anteriores con x(1) = 2; â?? x(0CIMAT, VI Escuela de verano, 25 de julio ­ 7 de agosto 1999 Introducci'on a la Geometr'ia de la Mec

Bor, Gil

188

CIMAT, VI Escuela de verano, 25 de julio -7 de agosto 1999 Introducci'on a la Geometr'ia de la Mec'anica Cl'asica  

E-Print Network [OSTI]

(t), `x(t)). (d)Dibujar las gr'aficas de su energ'ia cin'etica T = (x`)2=2 y potencial* * V = x2- vaci'on de energ'ia, E = T + V = constante. (e)Repetir los 4 incisos anteriores con x(1) = 2, `x CIMAT, VI Escuela de verano, 25 de julio - 7 de agosto 1999 Introducci'on a la Geometr'ia de la

Bor, Gil

189

Fe(III) Reduction and U(VI) Immobilization by Paenibacillus sp. Strain 300A, Isolated from Hanford 300A Subsurface Sediments  

SciTech Connect (OSTI)

A facultative iron-reducing (Fe(III)-reducing) Paenibacillus sp. strain was isolated from Hanford 300A subsurface sediment biofilms that was capable of reducing soluble Fe(III) complexes (Fe(III)-NTA and Fe(III)-citrate) but unable to reduce poorly crystalline ferrihydrite (Fh). However, Paenibacillus sp. 300A was capable of reducing Fh in the presence of low concentrations (2 µM) of either of electron transfer mediators (ETMs) flavin mononucleotide (FMN) or anthraquinone-2,6-disulfonate (AQDS). Maximum initial Fh reduction rates were observed at catalytic concentrations (<10 µM) of either FMN or AQDS. Higher FMN concentrations inhibited Fh reduction, while increased AQDS concentrations did not. We found that Paenibacillus sp. 300A also could reduce Fh in the presence of natural ETMs from Hanford 300A subsurface sediments. In the absence of ETMs, Paenibacillus sp. 300A was capable of immobilizing U(VI) through both reduction and adsorption. The relative contributions of adsorption and microbial reduction to U(VI) removal from the aqueous phase were ~7:3 in PIPES and ~1:4 in bicarbonate buffer. Our study demonstrated that Paenibacillus sp. 300A catalyzes Fe(III) reduction and U(VI) immobilization and that these reactions benefit from externally added or naturally existing ETMs in 300A subsurface sediments.

Ahmed, B.; Cao, B.; McLean, Jeffrey S.; Ica, Tuba; Dohnalkova, Alice; Istanbullu, Ozlem; Paksoy, Akin; Fredrickson, Jim K.; Beyenal, Haluk

2012-11-07T23:59:59.000Z

190

Three-Dimensional Topological Insulators in I-III-VI2 and II-IV-V2 Chalcopyrite Semiconductors  

SciTech Connect (OSTI)

The recent discovery of topological insulators with exotic metallic surface states has garnered great interest in the fields of condensed matter physics and materials science.1 A number of spectacular quantum phenomena have been predicted when the surface states are under the influence of magnetism and superconductivity,2 5 which could open up new opportunities for technological applications in spintronics and quantum computing. To achieve this goal, material realization of topological insulators with desired physical properties is of crucial importance. Based on first-principles calculations, here we show that a large number of ternary chalcopyrite compounds of composition I-III-VI2 and II-IV-V2 can realize the topological insulating phase in their native states. The crystal structure of chalcopyrites is derived from the frequently used zinc-blende structure, and many of them possess a close lattice match to important mainstream semiconductors, which is essential for a smooth integration into current semiconductor technology. The diverse optical, electrical and structural properties of chalcopyrite semiconductors,6 and particularly their ability to host room-temperature ferromagnetism,7 9 make them appealing candidates for novel spintronic devices.

Feng, wanxiang [Chinese Academy of Sciences; Ding, Jun [Beijing National Laboratory for Condensed Matter Physics/Chinese Academy of Scie; Xiao, Di [ORNL; Yao, yugui [Chinese Academy of Sciences

2011-01-01T23:59:59.000Z

191

Three-Dimensional Topological Insulators in I-III-VI$_2$ and II-IV-V$_2$ Chalcopyrite Semiconductors  

E-Print Network [OSTI]

The recent discovery of topological insulators with exotic metallic surface states has garnered great interest in the fields of condensed matter physics and materials science. A number of spectacular quantum phenomena have been predicted when the surface states are under the influence of magnetism and superconductivity, which could open up new opportunities for technological applications in spintronics and quantum computing. To achieve this goal, material realization of topological insulators with desired physical properties is of crucial importance. Based on first-principles calculations, here we show that a large number of ternary chalcopyrite compounds of composition I-III-VI$_2$ and II-IV-V$_2$ can realize the topological insulating phase in their native states. The crystal structure of chalcopyrites is derived from the frequently used zinc-blende structure, and many of them possess a close lattice match to important mainstream semiconductors, which is essential for a smooth integration into current semiconductor technology. The diverse optical, electrical and structural properties of chalcopyrite semiconductors, and particularly their ability to host room-temperature ferromagnetism, make them appealing candidates for novel spintronic devices.

Wanxiang Feng; Jun Ding; Di Xiao; Yugui Yao

2010-07-31T23:59:59.000Z

192

Impact of uranyl-calcium-carbonato complexes on uranium(VI) adsorption to synthetic and natural sediments  

SciTech Connect (OSTI)

Adsorption on soil and sediment solids may decrease aqueous uranium concentrations and limit its propensity for migration in natural and contaminated settings. Uranium adsorption will be controlled in large part by its aqueous speciation, with a particular dependence on the presence of dissolved calcium and carbonate. Here we quantify the impact of uranyl speciation on adsorption to both goethite and sediments from the Hanford Clastic Dike and Oak Ridge Melton Branch Ridgetop formations. Hanford sediments were preconditioned with sodium acetate and acetic acid to remove carbonate grains, and Ca and carbonate were reintroduced at defined levels to provide a range of aqueous uranyl species. U(VI) adsorption is directly linked to UO{sub 2}{sup 2+} speciation, with the extent of retention decreasing with formation of ternary uranyl-calcium-carbonato species. Adsorption isotherms under the conditions studied are linear, and K{sub d} values decrease from 48 to 17 L kg{sup -1} for goethite, from 64 to 29 L kg{sup -1} for Hanford sediments, and from 95 to 51 L kg{sup -1} for Melton Branch sediments as the Ca concentration increases from 0 to 1 mM at pH 7. Our observations reveal that, in carbonate-bearing waters, neutral to slightly acidic pH values ({approx}5) and limited dissolved calcium are optimal for uranium adsorption.

Stewart, B.D. [Stanford University; Mayes, Melanie [ORNL; Fendorf, Scott [ORNL

2010-01-01T23:59:59.000Z

193

Influence of ammonium availability on expression of nifD and amtB genes during biostimulation of a U(VI) contaminated aquifer: implications for U(VI) removal and monitoring the metabolic state of Geobacteraceae  

SciTech Connect (OSTI)

The influence of ammonium availability on bacterial community structure and the physiological status of Geobacter species during in situ bioremediation of uranium-contaminated groundwater was evaluated. Ammonium concentrations varied by 2 orders of magnitude (<4 to 400 ?M) across the study site. Analysis of 16S rRNA sequences suggested that ammonium may have been one factor influencing the community composition prior to acetate amendment with Rhodoferax species predominating over Geobacter species with higher ammonium and Dechloromonas species dominating at the site with lowest ammonium. However, once acetate was added and dissimilatory metal reduction was stimulated, Geobacter species became the predominant organisms at all locations. Rates of U(VI) reduction appeared to be more related to acetate concentrations rather than ammonium levels. In situ mRNA transcript abundance of the nitrogen fixation gene, nifD, and the ammonium transporter gene, amtB, in Geobacter species indicated that ammonium was the primary source of nitrogen during uranium reduction. The abundance of amtB was inversely correlated to ammonium levels, whereas nifD transcript levels were similar across all sites examined. These results suggest that nifD and amtB expression are closely regulated in response to ammonium availability to ensure an adequate supply of nitrogen while conserving cell resources. Thus, quantifying nifD and amtB transcript expression appears to be a useful approach for monitoring the nitrogen-related physiological status of subsurface Geobacter species. This study also emphasizes the need for more detailed analysis of geochemical and physiological interactions at the field scale in order to adequately model subsurface microbial processes during bioremediation.

Mouser, Paula J.; N'Guessan, A. Lucie; Elifantz, Hila; Holmes, Dawn E.; Williams, Kenneth H; Wilkins, Michael J.; Long, Philip E.; Lovley, Derek R.

2009-03-25T23:59:59.000Z

194

Compliance with the Clean Air Act Title VI Stratospheric Ozone Protection Program requirements at U.S. DOE Oak Ridge Reservation Facilities  

SciTech Connect (OSTI)

The Title VI Stratospheric Ozone Protection Program of the Clean Air Act (CAA) requires promulgation of regulations to reduce and prevent damage to the earth's protective ozone layer. Regulations pursuant to Title VI of the CAA are promulgated in the Code of Federal Regulations (CFR) at Title 40 CFR, Part 822. The regulations include ambitious production phaseout schedules for ozone depleting substances (ODS) including chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, carbon tetrachloride, and methyl chloroform under 40 CFR 82, Subpart A. The regulations also include requirements for recycling and emissions reduction during the servicing of refrigeration equipment and technician certification requirements under Subpart F; provisions for servicing of motor vehicle air conditioners under Subpart B; a ban on nonessential products containing Class 1 ODS under Subpart C; restrictions on Federal procurement of ODS under Subpart D; labeling of products using ODS under Subpart E; and the Significant New Alternatives Policy Program under Subpart G. This paper will provide details of initiatives undertaken at US Department of Energy (DOE) Oak Ridge Reservation (ORR) Facilities for implementation of requirements under the Title VI Stratospheric Ozone Protection Program. The Stratospheric Ozone Protection Plans include internal DOE requirements for: (1) maintenance of ODS inventories; (2) ODS procurement practices; (3) servicing of refrigeration and air conditioning equipment; (4) required equipment modifications or replacement; (5) technician certification training; (6) labeling of products containing ODS; (7) substitution of chlorinated solvents; and (8) replacement of halon fire protection systems. The plans also require establishment of administrative control systems which assure that compliance is achieved and maintained as the regulations continue to develop and become effective.

Humphreys, M.P.; Atkins, E.M.

1999-07-01T23:59:59.000Z

195

Acceleration of Field-Scale Bioreduction of U(VI) in a Shallow Alluvial Aquifer: Temporal and Spatial Evolution of Biogeochemistry  

SciTech Connect (OSTI)

Uranium mill tailings sites provide access to uranium-contaminated groundwater at sites that are shallow and low hazard, making it possible to address the following scientific objectives: (1) Determine the dominant electron accepting processes at field sites with long-term metal/rad contamination; (2) Define the biogeochemical transformations that may be important to either natural or accelerated bioremediation under field conditions; and (3) Examine the potential for using biostimulation (electron donor addition) to accelerate reduction of U(VI) to U(IV) at the field scale.

Long, Phil

2005-04-20T23:59:59.000Z

196

Immobilization of U(VI) from Oxic Groundwater by Hanford 300 Area Sediments and Effects of Columbia River Water  

SciTech Connect (OSTI)

Regions within the U.S. Department of Energy Hanford 300 Area (300 A) site experience periodic hydrologic influences from the nearby Columbia River as a result of changing river stage, which causes changes in groundwater elevation, flow direction and water chemistry. An important question is the extent to which the mixing of Columbia River water and groundwater impacts the speciation and mobility of uranium (U). In this study, we designed experiments to mimic interactions among U, oxic groundwater or Columbia River water, and 300 A sediments in the subsurface environment of Hanford 300 A. The goals were to investigate mechanisms of: 1) U immobilization in 300 A sediments under bulk oxic conditions and 2) U remobilization from U-immobilized 300 A sediments exposed to oxic Columbia River water. Initially, 300 A sediments in column reactors were fed with U(VI)-containing oxic 1) synthetic groundwater (SGW), 2) organic-amended SGW (OA-SGW), and 3) de-ionized (DI) water to investigate U immobilization processes. After that, the sediments were exposed to oxic Columbia River water for U remobilization studies. The results reveal that U was immobilized by 300 A sediments predominantly through reduction (80-85%) when the column reactor was fed with oxic OA-SGW. However, U was immobilized by 300 A sediments through adsorption (100%) when the column reactors were fed with oxic SGW or DI water. The reduced U in the 300 A sediments fed with OA-SGW was relatively resistant to remobilization by oxic Columbia River water. Oxic Columbia River water resulted in U remobilization (?7%) through desorption, and most of the U that remained in the 300 A sediments fed with OA-SGW (?93%) was in the form of uraninite nanoparticles. These results reveal that: 1) the reductive immobilization of U through OA-SGW stimulation of indigenous 300 A sediment microorganisms may be viable in the relatively oxic Hanford 300 A subsurface environments and 2) with the intrusion of Columbia River water, desorption may be the primary process resulting in U remobilization from OA-SGW-stimulated 300 A sediments at the subsurface of the Hanford 300 A site.

Ahmed, B.; Cao, Bin; Mishra, Bhoopesh; Boyanov, Maxim I.; Kemner, Kenneth M.; Fredrickson, Jim K.; Beyenal, Haluk

2012-09-23T23:59:59.000Z

197

LABORATORY VI ROTATIONAL DYNAMICS  

E-Print Network [OSTI]

wheels are everywhere. Balls spin when they are thrown. The earth rotates about its axis. Rotations to predict the outcome of a rotational system. · Choose a useful system when using rotational kinematics of systems. PREPARATION: Read Paul M. Fishbane: Chapter 9, Section 9-1; Chapter 5, Section 5-4. You should

Minnesota, University of

198

VI-1 PAPERS PUBLISHED  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV >41 - March 31, 2012

199

VI-1 TALKS PRESENTED  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV >41 - March 31,

200

VI-1 TALKS PRESENTED  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV >41 - March 31,3 -

Note: This page contains sample records for the topic "ytown gran vi" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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201

FE(VI)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolution Enhancedenvironmental stewardship | Department

202

MONOGRAFIAS DE FISICA VI  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and InterfacesAdministration -Lowell L.FallU . S . D e p a r t m e n ty

203

Development of a biomarker for Geobacter activity and strain composition: Proteogenomic analysis of the citrate synthase protein during bioremediation of U(VI)  

SciTech Connect (OSTI)

Monitoring the activity of target microorganisms during stimulated bioremediation is a key problem for the development of effective remediation strategies. At the US Department of Energy's Integrated Field Research Challenge (IFRC) site in Rifle, CO, the stimulation of Geobacter growth and activity via subsurface acetate addition leads to precipitation of U(VI) from groundwater as U(IV). Citrate synthase (gltA) is a key enzyme in Geobacter central metabolism that controls flux into the TCA cycle. Here, we utilize shotgun proteomic methods to demonstrate that the measurement of gltA peptides can be used to track Geobacter activity and strain evolution during in situ biostimulation. Abundances of conserved gltA peptides tracked Fe(III) reduction and changes in U(VI) concentrations during biostimulation, whereas changing patterns of unique peptide abundances between samples suggested sample-specific strain shifts within the Geobacter population. Abundances of unique peptides indicated potential differences at the strain level between Fe(III)-reducing populations stimulated during in situ biostimulation experiments conducted a year apart at the Rifle IFRC. These results offer a novel technique for the rapid screening of large numbers of proteomic samples for Geobacter species and will aid monitoring of subsurface bioremediation efforts that rely on metal reduction for desired outcomes.

Wilkins, M.J.; Callister, S.J.; Miletto, M.; Williams, K.H.; Nicora, C.D.; Lovley, D.R.; Long, P.E.; Lipton, M.S.

2010-02-15T23:59:59.000Z

204

Development of a biomarker for Geobacter activity and strain composition; Proteogenomic analysis of the citrate synthase protein during bioremediation of U(VI).  

SciTech Connect (OSTI)

Monitoring the activity of target microorganisms during stimulated bioremediation is a key problem for the development of effective remediation strategies. At the U.S. Department of Energy’s Integrated Field Research Challenge (IFRC) site in Rifle, CO, the stimulation of Geobacter growth and activity via subsurface acetate addition leads to precipitation of U(VI) from groundwater as U(IV). Citrate synthase (gltA) is a key enzyme in Geobacter central metabolism that controls flux into the TCA cycle. Here, we utilize shotgun proteomic methods to demonstrate that the measurement of gltA peptides can be used to track Geobacter activity and strain evolution during in situ biostimulation. Abundances of conserved gltA peptides tracked Fe(III) reduction and changes in U(VI) concentrations during biostimulation, whereas changing patterns of unique peptide abundances between samples suggested sample-specific strain shifts within the Geobacter population. Abundances of unique peptides indicated potential differences at the strain level between Fe(III)-reducing populations stimulated during in situ biostimulation experiments conducted a year apart at the Rifle IFRC. These results offer a novel technique for the rapid screening of large numbers of proteomic samples for Geobacter species and will aid monitoring of subsurface bioremediation efforts that rely on metal reduction for desired outcomes.

Wilkins, Michael J.; Callister, Stephen J.; Miletto, Marzia; Williams, Kenneth H.; Nicora, Carrie D.; Lovely, Derek R.; Long, Philip E.; Lipton, Mary S.

2011-01-01T23:59:59.000Z

205

Updates to the ORIGEN-S Cross-Section Libraries Using ENDF-VI, EAF-99, and FENDL-2.0  

SciTech Connect (OSTI)

The standard cross-section library for light-water reactor (LWR) analyses used by the ORIGEN-S depletion and decay code has been extensively updated. This work entailed the development of broad multigroup neutron cross sections for ORIGEN-S from several sources of pointwise continuous-energy cross-section evaluations, including the U.S. Evaluated Nuclear Data Files ENDF/B-VI Release 7, the Fusion Evaluated Nuclear Data Library FENDL-2.0, and the European Activation File EAF-99. The pointwise cross sections were collapsed to a three-group structure using a continuous-energy neutron flux spectrum representative of the typical neutronic conditions of typical LWR fuel and formatted for use by ORIGEN-S. In addition, the fission-product library has been expanded to include ENDF/B-VI fission yield data for 30 fissionable actinides. The processing codes and procedures are explained. Preliminary verification studies using the updated libraries were performed using the modules of the SCALE (Standardized Computer Analyses for Licensing Evaluation) system. Comparisons between the previous basic ORIGEN-S libraries and the updated libraries developed in this work are presented.

Murphy, B.D.

2004-11-04T23:59:59.000Z

206

agudo por gran: Topics by E-print Network  

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

por la investigacin cient-fica. El programa La Ciudad' intenta acercar la ciencia a la sociedad a travs de encuentros con escolares, profesores, o exposiciones que...

207

Mor-Gran-Sou Electric Coop Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Powerstories onFocus Area EnergyMohawk MunicipalMontvale, New Jersey:Water

208

High-Pressure Synthesis and Structure Determination of K6(SeO4)(SeO5), The First Potassium Orthoselenate(VI)  

SciTech Connect (OSTI)

The authors report on the first synthesis of a potassium orthoselenate(VI), K{sub 6}(SeO{sub 4})(SeO{sub 5}), and the structure determination from synchrotron powder diffraction data. The title compound crystallizes in the tetragonal space group P4{sub 1}2{sub 1}2 with a = 8.1259(1) {angstrom}, c = 17.4953(2) {angstrom}, V = 1155.21(2) {angstrom}{sup 3}, and Z = 4. Selenium displays two different complex anions, tetrahedral SeO{sub 4}{sup 2-} and trigonal-bipyramidal SeO{sub 5}{sup 4-}. When the formula is reduced to A{sub 3}B, the spatial arrangement of the constituting building units can be derived from the Li{sub 3}Bi type of structure.

Orosel,D.; Dinnebeier, R.; Jansen, M.

2006-01-01T23:59:59.000Z

209

I-III-VI.sub.2 based solar cell utilizing the structure CuInGaSe.sub.2 CdZnS/ZnO  

DOE Patents [OSTI]

A thin film I-III-VI.sub.2 based solar cell having a first layer of copper indium gallium selenide, a second layer of cadmium zinc sulfide, a double layer of zinc oxide, and a metallization structure comprised of a layer of nickel covered by a layer of aluminum. An optional antireflective coating may be placed on said metallization structure. The cadmium zinc sulfide layer is deposited by means of an aqueous solution growth deposition process and may actually consist of two layers: a low zinc content layer and a high zinc content layer. Photovoltaic efficiencies of 12.5% at Air Mass 1.5 illumination conditions and 10.4% under AMO illumination can be achieved.

Chen, Wen S. (Seattle, WA); Stewart, John M. (Seattle, WA)

1992-01-07T23:59:59.000Z

210

Bulk liquid membrane for the recovery of chromium(VI) from a hydrochloric acid medium using dicyclohexano-18-crown-6 as extractant-carrier  

SciTech Connect (OSTI)

The solvent extraction and transfer of chromic acid from hydrochloric acid medium through a bulk liquid membrane containing dicyclohexano-18-crown-6 (L) were studied. Extraction experiments pointed out that chromium(VI) was coextracted with the chloride ion which formed the complex ion pair L(H{sub 3}O{sup +})CrO{sub 3}Cl{sup {minus}} in the organic phase. The Donnan equilibrium isotherm based on the extraction, stripping, and CrO{sub 3}Cl{sup {minus}} hydrolysis equilibria allowed prediction of the performance of the semipermeable membrane to concentrate chlorochromic acid in the receiving phase. Transport experiments confirmed the ability of the liquid membrane to recover chlorochromic acid in pure water. The transport kinetics was modeled by using the two-film theory applied to the liquid membrane.

Zouhri, A. [Univ. Ibnou Zohr, Agadir (Morocco). Faulte de Sciences] [Univ. Ibnou Zohr, Agadir (Morocco). Faulte de Sciences; Ernst, B.; Burgard, M. [Ecole Europeenne de Chimie, Polymeres et Materiaux, Strasbourg (France)] [Ecole Europeenne de Chimie, Polymeres et Materiaux, Strasbourg (France)

1999-06-01T23:59:59.000Z

211

Theoretical analyses of (n,xn) reactions on sup 235 U, sup 238 U, sup 237 Np, and sup 239 Pu for ENDF/B-VI  

SciTech Connect (OSTI)

Theoretical analyses were performed of neutron-induced reactions on {sup 235}U, {sup 238}U, {sup 237}Np, and {sup 239}Pu between 0.01 and 20 MeV in order to calculate neutron emission cross sections and spectra for ENDF/B-VI evaluations. Coupled-channel optical model potentials were obtained for each target nucleus by fitting total, elastic, and inelastic scattering cross section data, as well as low-energy average resonance data. The resulting deformed optical model potentials were used to calculate direct (n,n{prime}) cross sections and transmission coefficients for use in Hauser-Feshbach statistical theory analyses. A fission model with multiple barrier representation, width fluctuation corrections, and preequilibrium corrections were included in the analyses. Direct cross sections for higher-lying vibrational states were calculated using DWBA theory, normalized using B(E{ell}) values determined from (d,d{prime}) and Coulomb excitation data, where available, and from systematics otherwise. Initial fission barrier parameters and transition state density enhancements appropriate to the compound systems involved were obtained from previous analyses, especially fits to charged-particle fission probability data. The parameters for the fission model were adjusted for each target system to obtain optimum agreement with direct (n,f) cross section measurements, taking account of the various multichance fission channels, that is, the different compound systems involved. The results from these analyses were used to calculate most of the neutron (n,n), (n,n{prime}), and (n,xn) cross section data in the ENDF/B/VI evaluations for the above nuclei, and all of the energy-angle correlated spectra. The deformed optical model and fission model parameterizations are described. Comparisons are given between the results of these analyses and the previous ENDF/B-V evaluations as well as with the available experimental data. 14 refs., 3 figs., 1 tab.

Young, P.G.; Arthur, E.D.

1991-01-01T23:59:59.000Z

212

ENDF-6 Formats Manual Data Formats and Procedures for the Evaluated Nuclear Data File ENDF/B-VI and ENDF/B-VII  

SciTech Connect (OSTI)

In December 2006, the Cross Section Evaluation Working Group (CSEWG) of the United States released the new ENDF/B-VII.0 library. This represented considerable achievement as it was the 1st major release since 1990 when ENDF/B-VI has been made publicly available. The two libraries have been released in the same format, ENDF-6, which has been originally developed for the ENDF/B-VI library. In the early stage of work on the VII-th generation of the library CSEWG made important decision to use the same formats. This decision was adopted even though it was argued that it would be timely to modernize the formats and several interesting ideas were proposed. After careful deliberation CSEWG concluded that actual implementation would require considerable resources needed to modify processing codes and to guarantee high quality of the files processed by these codes. In view of this the idea of format modernization has been postponed and ENDF-6 format was adopted for the new ENDF/B-VII library. In several other areas related to ENDF we made our best to move beyond established tradition and achieve maximum modernization. Thus, the 'Big Paper' on ENDF/B-VII.0 has been published, also in December 2006, as the Special Issue of Nuclear Data Sheets 107 (1996) 2931-3060. The new web retrieval and plotting system for ENDF-6 formatted data, Sigma, was developed by the NNDC and released in 2007. Extensive paper has been published on the advanced tool for nuclear reaction data evaluation, EMPIRE, in 2007. This effort was complemented with release of updated set of ENDF checking codes in 2009. As the final item on this list, major revision of ENDF-6 Formats Manual was made. This work started in 2006 and came to fruition in 2009 as documented in the present report.

Herman, M.; Members of the Cross Sections Evaluation Working Group

2009-06-01T23:59:59.000Z

213

Energy levels, oscillator strengths and transition probabilities for Si-like P II, S III, Cl IV, Ar V and K VI  

SciTech Connect (OSTI)

Fine-structure calculations of energy levels, oscillator strengths, and transition probabilities for transitions among the terms belonging to 3s{sup 2}3p{sup 2}, 3s3p{sup 3}, 3s{sup 2}3p3d, 3s{sup 2}3p4s, 3s{sup 2}3p4p, 3s{sup 2}3p4d, 3s{sup 2}3p5s and 3s{sup 2}3p5p configurations of silicon-like ions P II, S III, Cl IV, Ar V and K VI have been calculated using configuration-interaction version 3 (CIV3). We compared our data with the available experimental data and other theoretical calculations. Most of our calculations of energy levels and oscillator strengths (in length form) show good agreement with both experimental and theoretical data. Lifetimes of the excited levels are also given.

Abou El-Maaref, A., E-mail: aahmh@hotmail.com [Physics Department, Faculty of Science, Al-Azhar University, Assuit (Egypt); Uosif, M.A.M. [Physics Department, Faculty of Science, Al-Azhar University, Assuit (Egypt)] [Physics Department, Faculty of Science, Al-Azhar University, Assuit (Egypt); Allam, S.H.; El-Sherbini, Th.M. [Laboratory of Lasers and New Materials, Physics Department, Faculty of Science, Cairo University, Giza (Egypt)] [Laboratory of Lasers and New Materials, Physics Department, Faculty of Science, Cairo University, Giza (Egypt)

2012-07-15T23:59:59.000Z

214

The Department of Energy`s Rocky Flats Plant: A guide to record series useful for health-related research. Volume VI, workplace and environmental monitoring  

SciTech Connect (OSTI)

This is the sixth in a series of seven volumes which constitute a guide to records of the Rocky Flats Plant useful for conducting health-related research. The primary purpose of Volume VI is to describe record series pertaining to workplace and environmental monitoring activities at the Department of Energy`s (DOE) Rocky Flats Plant, now named the Rocky Flats Environmental Technology Site, near Denver, Colorado. History Associates Incorporated (HAI) prepared this guide as part of its work as the support services contractor for DOE`s Epidemiologic Records Inventory Project. This introduction briefly describes the Epidemiologic Records Inventory Project and HAI`s role in the project, provides a history of workplace and environmental monitoring practices at Rocky Flats, and identifies organizations contributing to workplace and environmental monitoring policies and activities. Other topics include the scope and arrangement of this volume and the organization to contact for access to these records. Comprehensive introductory and background information is available in Volume I. Other volumes in the guide pertain to administrative and general subjects, facilities and equipment, production and materials handling, waste management, and employee health. In addition, HAI has produced a subject-specific guide, titled The September 1957 Rocky Flats Fire. A Guide to Record Series of the Department of Energy and Its Contractors, which researchers should consult for further information about records related to this incident.

NONE

1995-08-01T23:59:59.000Z

215

Apparatus for forming thin-film heterojunction solar cells employing materials selected from the class of I-III-VI.sub.2 chalcopyrite compounds  

DOE Patents [OSTI]

Apparatus for forming thin-film, large area solar cells having a relatively high light-to-electrical energy conversion efficiency and characterized in that the cell comprises a p-n-type heterojunction formed of: (i) a first semiconductor layer comprising a photovoltaic active material selected from the class of I-III-VI.sub.2 chalcopyrite ternary materials which is vacuum deposited in a thin "composition-graded" layer ranging from on the order of about 2.5 microns to about 5.0 microns (.congruent.2.5 .mu.m to .congruent.5.0 .mu.m) and wherein the lower region of the photovoltaic active material preferably comprises a low resistivity region of p-type semiconductor material having a superimposed region of relatively high resistivity, transient n-type semiconductor material defining a transient p-n homojunction; and (ii), a second semiconductor layer comprising a low resistivity n-type semiconductor material wherein interdiffusion (a) between the elemental constituents of the two discrete juxtaposed regions of the first semiconductor layer defining a transient p-n homojunction layer, and (b) between the transient n-type material in the first semiconductor layer and the second n-type semiconductor layer, causes the transient n-type material in the first semiconductor layer to evolve into p-type material, thereby defining a thin layer heterojunction device characterized by the absence of voids, vacancies and nodules which tend to reduce the energy conversion efficiency of the system.

Mickelsen, Reid A. (Bellevue, WA); Chen, Wen S. (Seattle, WA)

1983-01-01T23:59:59.000Z

216

Distribution Behavior of U(VI), Pu(IV), Am(III), and Zr(IV) with N,N-Dihexyl Octanamide Under Uranium-Loading Conditions  

SciTech Connect (OSTI)

While the tri-n-butyl phosphate (TBP)-based PUREX process has been the workhorse of the nuclear fuel reprocessing industry for the last four and a half decades, a few drawbacks associated with the use of TBP have caused concern to the separation scientists and technologists. These shortcomings may pose a serious challenge particularly during the reprocessing of (a) short cooled thermal reactor fuels, (b) fast reactor fuels with the larger Pu content and significantly higher burn up, and (c) while treating various waste streams for their disposal to the environment. The N,N-dialkyl aliphatic amides have received particular attention as alternate potential extractants for the reprocessing of spent nuclear fuels in view of (a) the innocuous nature of their degradation products, namely, carboxylic acids/amines and (b) the possibility to incinerate the used solvent leading to reduced volume of secondary waste. The physical and chemical properties of these amides are influenced strongly by the nature of alkyl groups. The extractant N,N-dihexyl octanamide (DHOA) was found to be a promising candidate among a large number of extractants studied. Laboratory batch studies as well as mixer settler studies were performed under process conditions with DHOA and compared with those of TBP. DHOA was found to extract Pu(IV) more efficiently than TBP, both at trace-level concentration as well as under uranium loading conditions. In addition, the extraction behavior of Am(III) and Zr(IV) was studied at varying nitric acid concentrations (1 to 6 M). Extraction behavior of uranium at macroconcentrations (9.9 to 157.7 g/l) was carried out at different temperatures, and it was observed that D{sub U} decreased with the increase in U loading as well as with the increase of temperature (in the range 25 to 45 deg. C) and that the two-phase reaction was exothermic in nature. Mixer settler studies on U(VI) revealed that DHOA is similar to TBP during the extraction cycle but better than TBP during the stripping cycle.

Manchanda, V.K.; Ruikar, P.B.; Sriram, S.; Nagar, M.S.; Pathak, P.N.; Gupta, K.K.; Singh, R.K.; Chitnis, R.R.; Dhami, P.S.; Ramanujam, A. [Bhabha Atomic Research Centre (India)

2001-06-15T23:59:59.000Z

217

Spatially resolved U(VI) partitioning and speciation: Implications for plume scale behavior of contaminant U in the Hanford vadose zone  

SciTech Connect (OSTI)

A saline-alkaline brine containing high concentrations of U(VI) was accidentally spilled at the Hanford Site in 1951, introducing 10 tons of U into sediments under storage tank BX-102. U concentrations in the deep vadose zone and groundwater plumes increase with time, yet how the U has been migrating is not fully understood. We simulated the spill event in laboratory soil columns, followed by aging, and obtained spatially resolved U partitioning and speciation along simulated plumes. We found after aging, at apparent steady state, that the pore aqueous phase U concentrations remained surprisingly high (up to 0.022 M), in close agreement with the recently reported high U concentrations (up to 0.027 M) in the vadose zone plume (1). The pH values of aged pore liquids varying from 10 to 7, consistent with the measured pH of the field borehole sediments varying from 9.5 to 7.4 (2), from near the plume source to the plume front. The direct measurements of aged pore liquids together with thermodynamic calculations using a Pitzer approach revealed that UO{sub 2}(CO{sub 3}){sub 3} {sup 4-} is the dominant aqueous U species within the plume body (pH 8-10), while Ca{sub 2}UO{sub 2}(CO{sub 3}){sub 3} and CaUO{sub 2}(CO{sub 3}){sub 3}{sup 2-} are also significant in the plume front vicinity (pH 7-8), consistent with that measured from field borehole porewaters (3). U solid phase speciation varies at different locations along the plume flow path and even within single sediment grains, because of location dependent pore and micropore solution chemistry. Our results suggest that high geochemical stability of UO{sub 2}(CO{sub 3}){sub 3}{sup 4-} in the original carbonate and sodium rich waste solution permits its continues migration and the field observed increases of U concentrations in the vadose zone and groundwater.

Wan, Jiamin; Kim, Yongman; Tokunaga, Tetsu K.; Wang, Zheming; Dixit, Suvasis; Steefel, Carl; Saiz, Eduardo; Kunz, Martin; Tamura, Nobumichi

2009-02-01T23:59:59.000Z

218

PR_VI_50mwind  

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

Metadata also available as Metadata: IdentificationInformation DataQualityInformation SpatialDataOrganizationInformation SpatialReferenceInformation EntityandAttributeI...

219

VI. Required Appendices Appendix A  

E-Print Network [OSTI]

a successful academic with proficiency in biomedical sciences research. PREREQUISITES All students must of information (articles, books, videos, internet sites, etc.) that will provide the interested student. By continuing your enrollment in the course you acknowledge your understanding of this policy. ACADEMIC

220

VI. , 3 3. 4 4  

E-Print Network [OSTI]

Planescape Torment Sacrifice Star Wars: Knight of the Old Republic The Elder Scrolls X-COM: UFO Defense (UFO

Kaplan, Alexander

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


221

Title VI | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatusButler Tina Butler Tina-Butler.jpgLightingWindows Tips:StudyIXVI

222

Deep Downhole Seismic Testing at the Waste Treatment Plant Site, Hanford, WA. Volume VI S-Wave Measurements in Borehole C4997 Seismic Records, Wave-Arrival Identifications and Interpreted S-Wave Velocity Profile.  

SciTech Connect (OSTI)

Velocity measurements in shallow sediments from ground surface to approximately 370 to 400 feet bgs were collected by Redpath Geophysics using impulsive S- and P-wave seismic sources (Redpath 2007). Measurements below this depth within basalt and sedimentary interbeds were made by UTA between October and December 2006 using the T-Rex vibratory seismic source in each of the three boreholes. Results of these measurements including seismic records, wave-arrival identifications and interpreted velocity profiles are presented in the following six volumes: I. P-Wave Measurements in Borehole C4993 II. P-Wave Measurements in Borehole C4996 III. P-Wave Measurements in Borehole C4997 IV. S-Wave Measurements in Borehole C4993 V. S-Wave Measurements in Borehole C4996 VI. S-Wave Measurements in Borehole C4997 In this volume (VI), all S-wave measurements are presented that were performed in Borehole C4997 at the WTP with T-Rex as the seismic source and the Lawrence Berkeley National Laboratory (LBNL) 3-D wireline geophone as the at-depth borehole receiver.

Stokoe, Kenneth H.; Li, Song Cheng; Cox, Brady R.; Menq, Farn-Yuh

2007-06-06T23:59:59.000Z

223

Siljansfors frskspark Hyggesfritt,bldning,  

E-Print Network [OSTI]

det i våra vanligaste skogstyper? Vem vill ha det? Den 15-17 september reder vi ut be- greppen med tre exkursion till försöksytor i skiktade skogar av tall och gran. 16 september kl. 8:30-16: Internationell gran och fröträdsställning av tall. Europeiska jordbruksfonden för landsbygdsutveckling: Europa

224

Predictive calculations to assess the long-term effect of cementitious materials on the pH and solubility of uranium(VI) in a shallow land disposal environment  

SciTech Connect (OSTI)

One proposed method of low-level radioactive waste (LLW) disposal is to mix the radioactive waste streams with cement, place the mixture in steel barrels, and dispose of the barrels in near-surface unsaturated sediments. Cement or concrete is frequently used in burial grounds, because cement porewaters are buffered at high pH values and lanthanides and actinides; are very insoluble in highly alkaline environments. Therefore, leaching of these contaminants from the combined cement/low-level radioactive waste streams will at least initially be retarded. The calculations performed in this study demonstrate that the pH of cement porewaters will be maintained at a value greater than 10 for 10,000 years under Hanford specific hydrogeochemical conditions. Ten thousand years is the period generally studied in longterm performance assessments per regulatory guidance. The concentrations of dissolved hexavalent uranium [U(VI)], the valence form of dissolved U usually present in oxidizing surface and groundwaters, are also constrained by the high pH and predicted solution compositions over the 10,000-year period, which is favorable from a long-term performance perspective.

Criscenti, L.J.; Serne, R.J.; Krupka, K.M. [Pacific Northwest Lab., Richland, WA (United States); Wood, M.I. [Westinghouse Hanford Company, Richland, WA (United States)

1996-09-01T23:59:59.000Z

225

Radiative rates for E1, E2, M1, and M2 transitions in the Br-like ions Sr IV, Y V, Zr VI, Nb VII, and Mo VIII  

E-Print Network [OSTI]

Energies and lifetimes are reported for the lowest 375 levels of five Br-like ions, namely Sr~IV, Y~V, Zr~VI, Nb~VII, and Mo~VIII, mostly belonging to the 4s$^2$4p$^5$, 4s$^2$4p$^4$4$\\ell$, 4s4p$^6$, 4s$^2$4p$^4$5$\\ell$, 4s$^2$4p$^3$4d$^2$, 4s4p$^5$4$\\ell$, and 4s4p$^5$5$\\ell$ configurations. Extensive configuration interaction has been included and the general-purpose relativistic atomic structure package ({\\sc grasp}) has been adopted for the calculations. Additionally, radiative rates are listed among these levels for all E1, E2, M1, and M2 transitions. From a comparison with the measurements, the majority of our energy levels are assessed to be accurate to better than 2\\%, although discrepancies between theory and experiment for a few are up to 6\\%. An accuracy assessment of the calculated radiative rates (and lifetimes) is more difficult, because no prior results exist for these ions.

Aggarwal, K M

2015-01-01T23:59:59.000Z

226

ENERGIA E`OLICA La font d'energia amb el creixement mes gran  

E-Print Network [OSTI]

.lada: 48.000 MW Web World Wind energy Association http://www.wwindea.org Web Associaci´o danesa de la ind = 1 2 mv2 Pot`encia P = dEk dt = 1 2 dm dt v2 dm dt = Sv P = 1 2 Sv3 #12;RECURSOS EOLICS 1-2% de l L'ENERGIA E`OLICA #12;MERCAT PER FABRICANTS #12;PARCS E`OLICS MARINS #12;

Batiste, Oriol

227

E-Print Network 3.0 - adultos del gran Sample Search Results  

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

2008 Victoria Tur Vies Summary: existen tres estilos o formas de entender la infan- cia desde el punto de vista del adulto: Desprecio... complacerlos, hasta para cuidarlos....

228

La Universidad de Alicante mide el gran impacto de las marcas en Espaa como motor econmico  

E-Print Network [OSTI]

comercio, en la proyección exterior del país, en el impulso de la I+D, en la contribución al empleo, en su participación en el comercio electrónico en España. El análisis de su impacto sobre el empleo es considerado por redactores de informe como uno de sus elementos fundamentales. Según estadísticas de 2010, las

Escolano, Francisco

229

Double {beta} experiments with the help of scintillation and HPGe detectors at Gran Sasso  

SciTech Connect (OSTI)

A search for double beta decay of {sup 64,70}Zn, {sup 180,186}W was carried out by using low background ZnWO{sub 4} crystal scintillators, while a CeCl{sub 3} scintillation detector was applied to investigate 2{beta} processes in {sup 136,138,142}Ce. A search for 2{beta} decay of {sup 96,104}Ru, {sup 156,158}Dy, {sup 190,198}Pt and study of 2{nu}2{beta} decay of {sup 100}Mo to the first excited 0{sup +} level of {sup 100}Ru were realized by ultra-low background HPGe {gamma} spectrometry. Moreover, CdWO{sub 4} crystal scintillators from enriched {sup 106}Cd and {sup 116}Cd isotopes were developed to search for 2{beta} decay of {sup 106}Cd and {sup 116}Cd. Finally, experiments aimed to investigate {sup 96,104}Ru and {sup 116}Cd are in progress and a new phase of the experiment to search for 2{beta} processes in {sup 106}Cd is in preparation.

Barabash, A.; Konovalov, S. I.; Umatov, V. I. [Institute of Theoretical and Experimental Physics, Moscow (Russian Federation); Belli, P.; D'Angelo, S.; Di Marco, A. [INFN, Sezione di Roma ''Tor Vergata'', Rome (Italy); Bernabei, R. [INFN, Sezione di Roma ''Tor Vergata '', Rome (Italy); Dipartimento di Fisica, Universita di Roma ''Tor Vergata'', Rome (Italy); Boiko, R. S.; Chernyak, D. M.; Danevich, F. A.; Kobychev, V. V.; Kropivyansky, B. N.; Kudovbenko, V. M.; Nagorny, S. S.; Podviyanuk, R. B.; Polischuk, O. G.; Tretyak, V. I.; Vyshnevskyi, I. M.; Yurchenko, S. S. [Institute for Nuclear Research, Kyiv (Ukraine); Brudanin, V. B. [Joint Institute for Nuclear Research, Dubna (Russian Federation); and others

2011-12-16T23:59:59.000Z

230

Sustainable vector control and management of Chagas disease in the Gran Chaco, Argentina  

E-Print Network [OSTI]

and economic development in Latin America, especially for the rural poor. We report the long-term effects cruzi In Latin America, the burden of Chagas disease was estimated as 2.7 times the joint burden in 1985, transmission resurged in 2­3 years. Renewed interventions in 1992 followed by sustained

Cohen, Joel E.

231

E-Print Network 3.0 - al gran invento Sample Search Results  

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

Summary: al caso de un emigrante mallorqun (Manuel Gabucio Maroto), que pas a Tabasco, Mxico, alrededor de... al caudal de espaoles arribados a nuestro pas, y con...

232

VI-13 INSTITUTE COLLOQUIA AND SEMINARS  

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

September 25 Prof. K. A. Gridnev, St. Petersburg State University, St. Petersburg, Russia Extreme Neutron Rich Sector of the Nuclear Chart: New Horizon September 26 Dr....

233

Texas Rice, Volume VI, Number 1  

E-Print Network [OSTI]

responsible for oversight of GM re- search. According to the report released in De- cember of 2005, the OIG found several shortcom- ings in the protocols APHIS had in place to monitor transgenic re- search. According to the re- port, the number of ap- proved..., causing widespread devastation of commercialized crops. Due, in part, to intense public concern regarding GMOs, the USDA’s Office of the Inspector General (OIG) launched a review of the USDA Animal and Plant Health Inspection Service (APHIS), the agency...

234

Texas Rice, Volume VI, Number 3  

E-Print Network [OSTI]

article summarizes information submitted in the Sec- tion 18 Request. Rice is a major commodity in all southern rice-producing states. Rice farming generates revenue for related businesses such as irrigation districts, fuel suppliers, implement dealerships...; thus, southern rice farming generates at least $4-5 billion annually in revenue, which sustains many rural and urban com- munities in the South. Successful rice farming requires considerable economic inputs. In 2006, esti- mated direct expenses...

235

VI-13 INSTITUTE COLLOQUIA AND SEMINARS  

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

10 Professor Helmut Satz, Fakultaet fuer Physik, Universitaet Bielefeld, Bielefeld, Germany Quark Confinement and Hadrosythesis May 14 Dr. Daniel Abriola, Internaltional Atomic...

236

Journal of Undergraduate Research, Volume VI, 2006  

SciTech Connect (OSTI)

Students who conducted research at DOE National Laboratories during 2005 were invited to include their research abstracts, and for a select few, their completed research papers in this Journal. This Journal is direct evidence of students collaborating with their mentors. Fields in which these students worked include: Biology; Chemistry; Computer Science; Engineering; Environmental Science; General Sciences; Materials Sciences; Medical and Health Sciences; Nuclear Sciences; Physics; and Science Policy.

Faletra, P.; Schuetz, A.; Cherkerzian, D.; Clark, T.

2006-01-01T23:59:59.000Z

237

Chapter VI: Integrating North American Energy Markets  

Office of Environmental Management (EM)

i Considering these impacts over such a period leads to what is called the Global Warming Potential (GWP) of a GHG. The 100-year GWP for methane from the "Intergovernmental...

238

VI-9 RESEARCH PERSONNEL AND ENGINEERING STAFF  

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

2 - March 31, 2013 Faculty and Research Group Leaders Aldo Bonasera, Senior Scientist Charles M. Folden III, Assist. Prof. of Nuclear Chemistry Rainer Fries, Assist. Professor of...

239

Texas Rice, Volume VI, Number 5  

E-Print Network [OSTI]

a large number of questions from the audience. The biofuels topic is so critical to Texas agriculture that it is likely that I will be discussing it from time to time during the next several issues. In many states, the biofuels boat is rapidly... gaining speed. Some states are providing monetary incentives for businesses to establish production plants. Some states see tremendous value in biofuels research, and are providing broad-based funding to foster research focusing on increasing ethanol...

240

Texas Rice, Volume VI, Number 4  

E-Print Network [OSTI]

not favor one country over another. In the last issue of Texas Rice, I also discussed the need for a massive increase in federal and state funding for biofuels crop production. On June 7, 2006, the Worldwatch Institute presented a 38-page report titled..., “Biofuels for Transportation”. The report identifies the opportunities and limitations associated with biofuels production in the U.S. and elsewhere. Based on data presented in the report, ethanol production worldwide has increased at an annual rate of ca...

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


241

Texas Rice, Volume VI, Number 8  

E-Print Network [OSTI]

an interesting history that is very regional within the U.S. rice industry. At one extreme, brown-bagging in the Texas conventional long-grain market is almost non- existent. In contrast, an estimated 30-40% of Arkansas and Missouri farmers brown-bag rice seed... ..............................................................12 Sincerely, L.T. Wilson Professor and Center Director Jack B. Wendt Endowed Chair in Rice Research Welcome to the Octo- ber issue of Texas Rice. The U.S. long grain rice market has at least partially recov- ered from the impact...

242

Flyer, Title VI | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProvedDecember 2005DepartmentDecember U.S.Financial Statement:Fire2Fleet BriefingsFlyer,

243

VI-13 INSTITUTE COLLOQUIA AND SEMINARS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV >41 - March 31,3

244

VI-13 INSTITUTE COLLOQUIA AND SEMINARS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV >41 - March

245

VI-9 RESEARCH PERSONNEL AND ENGINEERING STAFF  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV >41 - March2 - March

246

VI-9 RESEARCH PERSONNEL AND ENGINEERING STAFF  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV >41 - March2 -

247

DarkStar VI | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump to: navigation, searchIllinois: Energy Resources Jump to: navigation,DarkStar

248

Chapter VI: Integrating North American Energy Markets  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation SitesStanding FriedelIron-Sulfur3-1 November8-1 November

249

Texas Rice, Volume VI, Number 2  

E-Print Network [OSTI]

; Rick Norman, Univer- sity of Arkansas; and Brian Ottis, University of Missouri. For more information email twalker@drec.msstate.edu Photo by Mike Jund Rice seedlings at the 4 and 5 leaf stage, with urea applied, just prior to permanent flood. Achieving...’s Nutrition Research Center Researcher in the News... Growing up a carpenter’s son with a love for science, Mike debated on which would be his career, and which would be his hobby. In the end, he decided on career in plant science, but his skill for building...

250

I.D I VI Figure  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinementEtching. | EMSL Bubblesstructure the Parker ~press -

251

Part VI: Section I: Contract Clause  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergyDepartment ofOil's ImpactAppendix Al Statement of Work forG CONTRACTII

252

Microsoft Word - FeVI.doc  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces andMappingENVIRONMENTALHYDROPOWER MEETING Tulsa16, 20138,AprilF F Fig. 1.Fe6

253

Role of U(VI) Adsorption in U(VI) Reduction by Geobacter Species.  

SciTech Connect (OSTI)

Previous work had suggested that Acholeplasma palmae has a higher capacity for uranium sorption than other bacteria studied. Sorption studies were performed with cells in suspension in various solutions containing uranium and results were used to generate uranium-biosorption isotherms.

None, None

2009-03-09T23:59:59.000Z

254

Ecoturisme, conservació de la natura i desenvolupament local: el cas de Mèxic, Amèrica Central i les Grans Antilles.  

E-Print Network [OSTI]

??Ecotourism, preservation of nature and local development: the case of Mexico, Central America and the Great Antilles AREA OF STUDY AND METHODOLOGY The present thesis… (more)

Nel·lo Andreu, Marta Gemma

2003-01-01T23:59:59.000Z

255

219itinerari d'impresa ~ inverno 2006-2007 / opere / sonde Il nuovo spirito del capitalismo un gran-  

E-Print Network [OSTI]

'Ecole des Hautes Etu- des en Sciences Sociales di Parigi, è stato il principale artefice del rinnovamento Chiapello, più giovane, anche lei sociologa,insegna alla Haute Eco- le Commerciale a Parigi.Nel corso degli

Paris-Sud XI, Université de

256

César Rengifo y el teatro venezolano  

E-Print Network [OSTI]

local, con un marcado afán por encontrar una forma expresiva que lo identifique con lo nacional. VI. Teatro criollo Descendiente directo del teatro costumbrista, se ubica en las primeras cuatro décadas del presente siglo. Recibe la influencia de los... muralismo" (T. VI. p. 450). Llegó al país con la intención de sacar el arte del museo y dirigirlo al pueblo, esto es, de la pintura de salón pasar al mural. Pero las condiciones no se dieron hasta 1954-1955, cuando realizó su gran mural-mosaico Amalivaca...

Paternina Rí os, Zoila

1999-04-01T23:59:59.000Z

257

JOURNAL DE CHIMIE-PHYSIQUE; T. VI; 1908.  

E-Print Network [OSTI]

distillations fraction- nées dans un appareil tout en verre, entre la température ordinaire et celles du mélange carbonique ou de l'air liquide. Lé criterium de la pureté était la constance de la pression pendant une distillation et aussi la constance des densités trouvées, après de nouvelles distilla- tions. Les données

Paris-Sud XI, Université de

258

CoViCAD: Comprehensive Visualization of Coronary Artery Disease  

E-Print Network [OSTI]

, the patient suffers a my- ocardial infarction, also known as heart attack. Part of the heart mus- cle tissue viability information in a detailed anatomical context. We combine multiple MRI scans (whole heart anatomical data, late enhancement data) and multiple segmentations (polygonal heart model, late enhancement

259

Interaction of Uranium(VI) with Phthalic Acid  

SciTech Connect (OSTI)

Phthalic acid, a ubiquitous organic compound found in soil, water, and in domestic and nuclear wastes can affect the mobility and bioavailability of metals and radionuclides. We examined the complexation of uranium with phthalic acid by potentiometric titration, electrospray ionization-mass spectroscopy (ESI-MS), and extended X-ray absorption fine structure (EXAFS) analysis. Potentiometric titration of a 1:1 U/phthalic acid indicated uranyl ion bonding with both carboxylate groups of phthalic acid; above pH 5 the uranyl ion underwent hydrolysis with one hydroxyl group coordinated to the inner-sphere of uranium. In the presence of excess phthalic acid, ESI-MS analysis revealed the formation of both 1:1 and 1:2 U/phthalic acid complexes. EXAFS studies confirmed the mononuclear biligand 1:2 U/phthalic acid complex as the predominant form. These results show that phthalates can form soluble stable complexes with uranium and may affect its mobility.

Vazquez, G.; Dodge, C; Francis, A

2008-01-01T23:59:59.000Z

260

SUR L'EDUCATION MATH V.I. ARNOLD  

E-Print Network [OSTI]

moiti#19;e de leur science |n'ayant d'ailleurs pas la moindre id#19;ee d'aucune autre. Ils ont com- menc sont une h#19;er#19;esie ; mais on peut aussi les introduire plus tard dans la th#19;eorie comme "nombres id#19;eaux", ceci pour s'adapter aux besoins de la physique et du monde r#19;eel). Malheureusement

Arnold, Vladimir Igorevich

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


261

Universit Paris VI LG301 2008-2009  

E-Print Network [OSTI]

Kepler pour qu'il dérive ses trois lois ? a) Ptolémée. b) Galilée. c) Tycho Brahe. d) Johann Stöffler. e expliquer les mouvements des planètes autour du Soleil ? a) Newton. b) Tycho Brahe. c) Johannes Kepler. d) Tycho Brahé c) Nicolas Copernic. d) Johannes Kepler. e) Aucune de ces réponses. #12;5) Où apparaissent

Aubin, David

262

ENDF/VI six-group delayed neutron data  

SciTech Connect (OSTI)

In addition to individual precursor data (emission probabilities (Pn) and neutron spectra), the ENDF system requires {bar {nu}}(E), and its time-dependence and spectra using a few time groups. These data have been greatly extended, tested, and recently (June 1989) compared with new measurements of pulse spectra. 7 refs., 2 figs.

England, T.R.; Brady, M.C. (Los Alamos National Lab., NM (USA); Oak Ridge National Lab., TN (USA))

1989-01-01T23:59:59.000Z

263

Microsoft Word - VI-1 Papers Published 2003.doc  

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

the S 17 and S 18 astrophysical factors from the breakup of 8 B and 9 C at intermediate energies L. Trache, F. Carstoiu, C. A. Gagliardi, A. M. Mukhamedzhanov and R. E. Tribble...

264

THE CARINA PROJECT. VI. THE HELIUM-BURNING VARIABLE STARS  

SciTech Connect (OSTI)

We present new optical (BVI) time-series data for the evolved variable stars in the Carina dwarf spheroidal galaxy. The quality of the data and the observing strategy allowed us to identify 14 new variable stars. Eight out of the 14 are RR Lyrae (RRL) stars, 4 are Anomalous Cepheids (ACs), and 2 are geometrical variables. Comparison of the period distribution for the entire sample of RRLs with similar distributions in nearby dwarf spheroidal galaxies and in the Large Magellanic Cloud indicates that the old stellar populations in these systems share similar properties. This finding is also supported by the RRL distribution in the Bailey diagram. On the other hand, the period distribution and the Bailey diagram of ACs display significant differences among the above stellar systems. This evidence suggests that the properties of intermediate-age stellar populations might be affected both by environmental effects and structural parameters. We use the BV Period-Wesenheit (PW) relation of RRLs together with evolutionary prescriptions and find a true distance modulus of 20.09 {+-} 0.07 (intrinsic) {+-} 0.1 (statistical) mag that agrees quite well with similar estimates available in the literature. We identified four peculiar variables. Taking into account their position in the Bailey diagram and in the BV PW relation, two of them (V14 and V149) appear to be candidate ACs, while two (V158 and V182) might be peculiar RRLs. In particular, the variable V158 has a period and a V-band amplitude very similar to the low-mass RRL-RRLR-02792-recently identified by Pietrzynski et al. in the Galactic bulge.

Coppola, G.; Marconi, M.; Ripepi, V.; Dall'Ora, M.; Musella, I. [INAF-Osservatorio Astronomico di Capodimonte, Via Moiariello 16, I-80131 Napoli (Italy); Stetson, P. B. [Dominion Astrophysical Observatory, NRC-Herzberg, 5071 West Saanich Road, Victoria, BC V9E 2E7 (Canada); Bono, G.; Buonanno, R. [Dipartimento di Fisica-Universita di Roma Tor Vergata, Via della Ricerca Scientifica 1, I-00133 Roma (Italy); Fabrizio, M. [INAF-Osservatorio Astronomico di Collurania, via M. Maggini, I-64100 Teramo (Italy); Ferraro, I.; Iannicola, G.; Pulone, L. [INAF-Osservatorio Astronomico di Roma, Via Frascati 33, I-00040 Monte Porzio Catone (Italy); Fiorentino, G. [INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna (Italy); Monelli, M. [Instituto de Astrofisica de Canarias, Calle Via Lactea s/n, E-38205 La Laguna, Tenerife (Spain); Nonino, M. [INAF-Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11, I-40131 Trieste (Italy); Thevenin, F. [Universite de Nice-Sophia Antipolis, Lab. Lagrange, UMR 7293, Observatoire de la Cote dAzur, BP 4229, F-06304 Nice (France); Walker, A. R., E-mail: coppola@na.astro.it [Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena (Chile)

2013-09-20T23:59:59.000Z

265

Volume VI, Chapter 2 Run Reconstructions of Select  

E-Print Network [OSTI]

: Coweeman tule fall chinook, East Fork Lewis tule fall chinook, North Fork Lewis bright fall chinook, Wind, Wind summer steelhead, and Grays chum. These populations were selected because they represent a mixture of the ratio of recruits to spawners, in the absence of density dependent mortality (Neave 1953). Run

266

New insights into uranium (VI) sol-gel processing  

SciTech Connect (OSTI)

Nuclear Magnetic Resonance (NMR) investigations on the Oak Ridge National Laboratory process for sol-gel synthesis of microspherical nuclear fuel (UO{sub 2}), has been extremely useful in sorting out the chemical mechanism in the sol-gel steps. {sup 13}C, {sup 15}N, and {sup 1}H NMR studies on the HMTA gelation agent (Hexamethylene tetramine, C{sub 6}H{sub 12}N{sub 4}) has revealed near quantitative stability of this adamantane-like compound in the sol-gel process, contrary to its historical role as an ammonia source for gelation from the worldwide technical literature. {sup 17}O NMR of uranyl (UO{sub 2}{sup ++}) hydrolysis fragments produced in colloidal sols has revealed the selective formation of a uranyl trimer, ((UO{sub 2}){sub 3}({mu}{sub 3}-O)({mu}{sub 2}-OH){sub 3}){sup +}, induced by basic hydrolysis with the HMTA gelation agent. Spectroscopic results will be presented to illustrate that trimer condensation occurs during sol-gel processing leading to layered polyanionic hydrous uranium oxides in which HMTAH{sup +} is occluded as an intercalation'' cation. Subsequent sol-gel processing of microspheres by ammonia washing results in in-situ exchange and formation of a layered hydrous ammonium uranate with a proposed structural formula of (NH{sub 4}){sub 2} ((UO{sub 2}){sub 8} O{sub 4} (OH){sub 10}) {center dot} 8H{sub 2}O. This compound is the precursor to sintered UO{sub 2} ceramic fuel. 23 refs., 10 figs.

King, C.M.; Thompson, M.C.; Buchanan, B.R. (Westinghouse Savannah River Co., Aiken, SC (USA)); King, R.B. (Georgia Univ., Athens, GA (USA). Dept. of Chemistry); Garber, A.R. (South Carolina Univ., Columbia, SC (USA). Dept. of Chemistry)

1990-01-01T23:59:59.000Z

267

Precision engineering center. 1988 Annual report, Volume VI  

SciTech Connect (OSTI)

To reverse the downward trend in the balance of trade, American companies must concentrate on increasing research into new products, boosting productivity, and improving manufacturing processes. The Precision Engineering Center at North Carolina State University is a multidisciplinary research and graduate education program dedicated to providing the new technology necessary to respond to this challenge. One extremely demanding manufacturing area is the fabrication and assembly of optical systems. These systems are at the heart of such consumer products as cameras, lenses, copy machines, laser bar-code scanners, VCRs, and compact audio discs - products that the Japanese and other East Asian countries are building dominance. A second critical area is the fabrication of VLSI and ULSI circuits. The tolerances required to produce the next generation of components for such systems have created the need for new approaches - approaches that could either make or break America`s competitive position. This report contains individual reports on research projects grouped into three broad areas: measurement and actuation; real-time control; precision fabrication. Separate abstracts for these articles have been indexed into the energy database.

Dow, T. [ed.; Fornaro, R.; Keltie, R.; Paesler, M. [and others

1988-12-01T23:59:59.000Z

268

DOE human genome program contractor-grantee workshop VI  

SciTech Connect (OSTI)

Research is presented from the workshop on the Human Genome Project. Topics include sequencing, genetic mapping, informatics, ethical and legal issues, and infrastructure.

NONE

1997-10-01T23:59:59.000Z

269

Chemistry of the Colloidal Group II-VI Nanocrystal Synthesis  

E-Print Network [OSTI]

chalcogenide cleaves the phosphorous - chalcogen bond andoxygen, nitrogen, or phosphorous atoms. The binding energyDuring this process, the phosphorous atom is attacked by an

Liu, Haitao

2007-01-01T23:59:59.000Z

270

(180-VI-NPPH, Amend. 4, March 2003) United States  

E-Print Network [OSTI]

· Focus on ecological principles · Consider the effects and interactions of planned systems and practices the land's relationship to the entire farm, ranch, or watershed · Ensure the conservationist's presence out uses. Planning involves more than considering individual resources. It focuses on the natural systems

Mukhtar, Saqib

271

North American Standard Level VI Inspection Program Update: Ensuring...  

Office of Environmental Management (EM)

Ensuring Safe Transportation of Radioactive Material Presentation made by Carlisle Smith for the NTSF annual meeting held from May 14-16, 2013 in Buffalo, NY North American...

272

Microsoft Word - APP VI, Rev 3 _03-19-20  

National Nuclear Security Administration (NNSA)

D.L. Finnegan, J.L. Thompson, C.M. Miller, P.L. Baca, L.F. Olivas, C.G. Geoffrion, D.K. Smith, W. Goishi, B.K. Esser, J.W. Meadows, N. Namboodiri, and J.F. Wild. 2001. Nevada Test...

273

Proto Algic VI: Conditioned Yurok Reflexes of Proto Algic Vowels  

E-Print Network [OSTI]

organization. In a recent paper, 'Reduplication and Infixation in Yurok: Morphology, Semantics, and Diachrony,1 Andrew Garrett has presented a set of reconstructed Proto Ritwan vowels (and a few consonants), based on a similar set suggested by Howard Berman... some years ago in his paper 'Two Phonological Innovations in Ritwan' (Garrett 2001, Berman 1982). In a cryptic footnote, he dismisses my reconstruction of Proto Algic phonology without a Ritwan subgrouping (Proulx 1984): 'I am unpersuaded...

Proulx, Paul

2004-01-01T23:59:59.000Z

274

Texas Adapted Genetic Strategies for Beef Cattle VI: Creating Breeds  

E-Print Network [OSTI]

breeds created recently a reg- istry was established when breed formation began, with required documentation of parentage. After quarantine and disease-testing facilities were established in North America, the importa- tion of many new breeds began... Salorn? ?5/8 Salers, 3/8 Texas Longhorn Senepol? ?pool of Red Poll and N?Dama (a humpless west African heat-tolerant breed) Texon? ?pool of Devon and Texas Longhorn Other breed combinations In addition to the British-Continental combina- tions...

Hammack, Stephen P.

2009-06-17T23:59:59.000Z

275

VI International SAUM Conference on Systems, Automatic Control and Measurements  

E-Print Network [OSTI]

, aircrafts, robots, electrical cir­ cuits, power systems, nuclear reactors, chemical reactors, dc thousand journal papers and more than twenty books were published by engineering and mathematics

Gajic, Zoran

276

EA-389 Greay Bay Energy VI, LLC | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergy DOEDealingVehicle1 Closing American Electric0-A2 GDF Suez37 Energia89

277

Microsoft Word - APP VI, Rev 3 _03-19-20  

National Nuclear Security Administration (NNSA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartmentNationalRestart of the Review ofElectronic Input Options Gary2013 Annual8

278

Catalytic Adsorptive Stripping Determination of Trace Chromium (VI) at  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation Sites ProposedOccupational Health Services| AdvancedPortalBismuth

279

Microsoft Word - VI-1 Papers Published 2003.doc  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource Program Preliminary Needs535:UFC 2300.004/2013April 2014About DOE2 -

280

Molecular Interactions of Plutonium(VI) with Synthetic  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource ProgramModification and Application ofof aEMSL

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


281

Brookhaven National Laboratory - OU VI VOC | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power Systems EngineeringDepartment of4 Federal6Clean Energy | DepartmentBrandonYoungHFBRIII

282

An Octahedral Coordination Complex of Iron(VI)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmes Laboratory Site| Department ofAn Inside LookAn Iron is

283

North American Standard Level VI Inspection Program Update: Ensuring Safe  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September 15, 2010 PrintingNeed forNews »Department ofMeeting

284

Ch. VI, The geophysical environment around Waunita Hot Springs | Open  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin:Energy Information on PV2009 | OpenCeradyne Inc Jump to:CerionEnergy

285

An Octahedral Coordination Complex of Iron(VI)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone by E-mail ShareRed CrossAn Iridate with Fermi Arcs AnProteomic

286

aux lignes de force il y a une diffrence de traction de mme gran-deur. 1'I. Quincke a remarqu que, dans le sulfure de carbone,  

E-Print Network [OSTI]

dans l'huile de colza, lavée soigneusement au sulfure de carbone et laissée dans ce liquide pendant 22 tournait de nouveau, mais pendant 2 heures seulement, dans le sulfure de carbone, avec une différence de quart d'heure, méme à 90°. L'auteur a opéré sur les sels suivants : AzH�,Az03 K3FeCy6 KBr (AzH')2 S04

Boyer, Edmond

287

How The 17 GeV OPERA Superluminal Neutrino From CERN Arrived At Gran Sasso Without Desintegration??:It Was Carried Out By A  

E-Print Network [OSTI]

??:It Was Carried Out By A Natario Warp Drive.Explanation for the results obtained by Glashow-Cohen and Gonzalez introduced the idea of the micro Warp Drive:Microscopical particle-sized Warp Bubbles carrying inside sub in the Early Universe after the Big Bang and they used the Alcubierre Warp Drive geometry in their mathematical

Paris-Sud XI, Université de

288

En Medio De Un Gran Circo: La Ciudad De México A Tráves De Las Crónicas Musicales De Maldita Vecindad Y Los Hijos Del 5º Patio  

E-Print Network [OSTI]

y económicos causados por el sismo: “Se habló de un númeropasadas dos semanas del sismo; entre cien y ciento cincuentadel terremoto declara que “El sismo reveló que de todos los

Lujan, Soledad

2014-01-01T23:59:59.000Z

289

R. Winther, B.A. Gran, and G. Dahll (Eds.): SAFECOMP 2005, LNCS 3688, pp. 136 150, 2005. Springer-Verlag Berlin Heidelberg 2005  

E-Print Network [OSTI]

arguments. Results illustrating the benefits and safety of the SCANN in a Gas Turbine Engine Model. © Springer-Verlag Berlin Heidelberg 2005 Using Safety Critical Artificial Neural Networks in Gas Turbine Aero networks. This paper examines the practicalities of using the SCANN and SLANN for Gas Turbine Aero

Kelly, Tim

290

Skogen r ttare, grvre och mer lvrik Virkesfrrdet i Sveriges skogar fort-  

E-Print Network [OSTI]

perioden medan för- rådet av tall och gran ökat med 17 respektive 7 procent. Samtidigt har arealen för virkesförrådet,fortsätter Göran Kempe. Bättre tillgång till statistiken på nätet Den som vill göra egna sökningar. Arbetsnamnet är Tax- webb. ­ Vi vill öka tillgängligheten av vår skogliga statistik.Tanken är att Taxwebb

291

VI Symposium of Specialists in Electric Operational and Expansion Planning -VI SEPOPE, May 24-29,1998, Bahia, Brazil POWER SYSTEM PLANNING IN THE SOUTH AMERICA  

E-Print Network [OSTI]

the execution of a few macro projects, capital intensive, with high impact on the economic development of each country, and where their revenues depend on the local conditions and the development of future projects in infrastructure development and the required regulations in the energy field. It describes how the planning

Catholic University of Chile (Universidad Católica de Chile)

292

Effect of Grain Size on Uranium(VI) Surface Complexation Kinetics and Adsorption Additivity  

SciTech Connect (OSTI)

Laboratory experiments were performed to investigate the contribution of variable grain sizes to uranium adsorption/desorption in a sediment collected from the US DOE Hanford site. The sediment was wet-sieved into four size fractions: coarse sand (1-2 mm), medium sand (0.2-1 mm), fine sand (0.05-0.2 mm), and clay/silt fraction (< 0.05mm). For each size fraction and their composite (sediment), batch experiments were performed to determine uranium adsorption isotherms, and stirred flow-cell experiments were conducted to derive kinetic data of uranium adsorption and subsequent desorption. The results showed that uranium adsorption isotherms and adsorption/desorption kinetics were size-specific, reflecting the effects of size-specific adsorption site concentration and kinetic rate constants. The larger-size fraction had a larger mass percentage in the sediment, but with a smaller adsorption site concentration and generally a slower uranium adsorption/desorption rate. The same equilibrium surface complexation reaction and reaction constant could describe uranium adsorption isotherms for all size fractions and the composite after accounting for the effect of adsorption site concentration. Mass-weighted, linear additivity was observed for both uranium adsorption isotherms and adsorption/desorption kinetics in the composite. Our analysis also showed that uranium adsorption site concentration estimated from the adsorption isotherms was 3 orders of magnitude less than a site concentration estimated from sediment surface area and generic site density. One important implication of this study is that grain size distribution may be used to estimate uranium adsorption site, and adsorption/desorption kinetic rates in heterogeneous sediments from a common location.

Shang, Jianying; Liu, Chongxuan; Wang, Zheming; Zachara, John M.

2011-07-27T23:59:59.000Z

293

Advective Desorption of Uranium (VI) from Contaminated Hanford Vadose Zone Sediments under Saturated and Unsaturated Conditions  

SciTech Connect (OSTI)

Sedimentary, hydrologic, and geochemical variations in the Hanford subsurface environment, as well as compositional differences in contaminating waste streams, have created vast differences in the migration and mobility of uranium within the subsurface environment. A series of hydraulically-saturated and -unsaturated column experiments were performed to i.) assess the effect of water content on the advective desorption and migration of uranium from contaminated sediments, and ii.) evaluate the uranium concentration that can develop in porewater and/or groundwater as a result of desorption/dissolution reactions. Flow rate and moisture content were varied to evaluate the influence of contact time, pore water velocity, and macropore desaturation on aqueous uranium concentrations. Sediments were collected from the T-TX-TY tank farm complex and the 300 Area Process Ponds located on the Hanford Site, southeastern Washington State. The sediments vary in depth, mineralogy, and in contamination events. Experiments were conducted under mildly alkaline/calcareous conditions representative of conditions commonly encountered at repository sites across the arid western United States and, in particular, the Hanford site. Results illustrate the release of uranium from these sediments is kinetically controlled and low water contents encountered within the Hanford vadose zone result in the formation of mobile-immobile water regimes, which isolate a fraction of the reactive sites within the sediments, effectively reducing the concentration of uranium released into migrating porewaters.

Wellman, Dawn M.; Zachara, John M.; Liu, Chongxuan; Qafoku, Nikolla; Smith, Steven C.; Forrester, Steven W.

2008-11-03T23:59:59.000Z

294

Changes in U(VI) speciation upon sorption onto montmorillonite from aqueous and organic solutions  

SciTech Connect (OSTI)

The speciation of UO{sub 2}{sup 2+} and UO{sub 2}{sup 2+} Tributylphosphate (TBP) mixtures has been investigated in solution and intercalated with the reference smectite clay SAz-1 using x-ray absorption, Raman, and luminescence spectroscopies. Neither aquated UO{sub 2}{sup 2+} nor its TBP complex undergoes any detectable changes in uranium oxidation state on intercalation. Further, at the pH values employed in this work, there is no evidence for hydrolysis of the uranium species to generate dimeric or higher order uranium oligomers. However, we do find indications that the structures of the solution complexes are altered on intercalation, particularly for the UO{sub 2}{sup 2+}/TBP system. In addition, several lines of evidence suggest that, at the loading levels used in this study, the uranyl species may be interacting with two or more spectroscopically distinguishable sites on SAz-1. 29 refs., 3 figs., 2 tabs.

Chisholm-Brause, C.; Morris, D.E.; Eller, P.G.; Buscher, T.; Conradson, S.D.

1991-01-01T23:59:59.000Z

295

Diplomacy & deception : King James VI of Scotland's foreign relations with Europe (c.1584-1603) .  

E-Print Network [OSTI]

??This thesis is the first attempt to provide an assessment of Scottish-Jacobean foreign relations within a European context in the years before 1603. Moreover, it… (more)

Fry, Cynthia Ann

2014-01-01T23:59:59.000Z

296

TH`ESE DE DOCTORAT DE L'UNIVERSITE PARIS VI Specialite  

E-Print Network [OSTI]

toutes les personnes qui de pr`es ou de loin m'ont apport´e aide et id´ees. Sans la gentillesse de Nacera'adsorption : du pore unique au solide d´esordonn´e . . . . . . 12 1.2.1 Hyst´er´esis dans un pore isol

Boyer, Edmond

297

Microwave-Assisted Synthesis of II-VI Semiconductor Micro- and Nanoparticles towards Sensor Applications  

E-Print Network [OSTI]

leads to slow heating and allows decomposition of reagents or products over time. Microwave-assisted heating provides faster, localized heating at the molecular level with near instantaneous control over reaction parameters. In this work, microwave...

Majithia, Ravish

2013-01-15T23:59:59.000Z

298

ENDF/B-VI (Evaluated Nuclear Data File) six-group delayed neutron data  

SciTech Connect (OSTI)

In addition to individual precursor data (emission probabilities (P{sub n}) and neutron spectra), the Evaluated Nuclear Data File (ENDF) system requires {bar {nu}}(E) and its time dependence and spectra using a few time groups. These data have been greatly extended, tested, and recently (June 1989) compared with new measurements of pulse spectra.

England, T.R. (Los Alamos National Laboratory, NM (USA)); Brady, M.C. (Oak Ridge National Laboratory, TN (USA))

1989-11-01T23:59:59.000Z

299

UNIVERSITE PARIS VI Memoire en vue d'obtenir l'habilitation `a diriger des  

E-Print Network [OSTI]

d'approche purement topologique : celle de la m´ethode BKW complexe. On gagnerait certainement beaucoup a reformuler cette analyse BKW dans notre contexte. Mais c'est un point que je n'ai pas en- core

van Straten, Duco

300

Thermophysical analysis of II-VI semiconductors by PPE calorimetry and lock-in thermography  

SciTech Connect (OSTI)

An accurate determination of thermophysical properties such as thermal diffusivity, thermal effusivity and thermal conductivity is extremely important for characterization and quality assurance of semiconductors. Thermal diffusivity and effusivity of some binary semiconductors have been investigated. Two experimental techniques were used: a contact technique (PPE calorimetry) and a non contact technique (lock-in thermography). When working with PPE, in the back (BPPE) configuration and in the thermally thick regim of the pyroelectric sensor, we can get the thermal diffusivity of the sample by performing a scanning of the excitation frequency of radiation. Thermal effusivity is obtained in front configuration (sensor directly irradiated and sample in back position) by performing a thickness scan of a coupling fluid. By using the lock-in thermography technique, the thermal diffusivity of the sample is obtained from the phase image. The results obtained by the two techniques are in good agreement. Nevertheless, for the determination of thermal diffusivity, lock-in thermography is preferred.

Streza, M.; Dadarlat, D. [National Institute for Research and Development of Isotopic and Molecular Technologies, 65-103 Donath, 400293 Cluj-Napoca (Romania)] [National Institute for Research and Development of Isotopic and Molecular Technologies, 65-103 Donath, 400293 Cluj-Napoca (Romania); Strza?kowski, K. [Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 (Poland)] [Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 (Poland)

2013-11-13T23:59:59.000Z

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


301

Universit Paris VI -Pierre et Marie Curie -UFR des Sciences de la Vie Discipline : Ocanologie Biologique  

E-Print Network [OSTI]

Lenfant, Marion Jarraya, Suzanne Mills, Serge Planes, Jean-Pierre Pointier, Jocelyne Blanc, Jean d'eau. Merci à Thierry Lison de Loma, pour son aide sur le terrain à Raiatea, et pour avoir bien

Paris-Sud XI, Université de

302

Th`ese de Doctorat de l'Universite Paris VI Pierre et Marie Curie  

E-Print Network [OSTI]

Lindgren, doctorant `a l'Universit´e de Lulea maintenant `a l'UCL, pour les travaux passionnants de

Paris-Sud XI, Université de

303

Adsorption of Chromium (VI) by metal hydroxide sludge from the metal finishing  

E-Print Network [OSTI]

and Management, United States (2008)" #12;2 1 Introduction Industrial aqueous pollution (heavy metals) accounts sludge (MHS) during the treatment of their liquid effluents charged with heavy metals. Generally, a small for 30 to 40% of industrial pollution. Metal finishing is one of the sectors which contributes mostly

Paris-Sud XI, Université de

304

A Stepping Stone In addition to opening doors to industry, the VI-A  

E-Print Network [OSTI]

Devices, Booz Allen Hamilton, The Charles Stark Draper Laboratory, Linear Technology, Maxim, Microsoft

Williams, Brian C.

305

A Stepping Stone In addition to opening doors to industry, the VI-A  

E-Print Network [OSTI]

Devices, Booz Allen Hamilton, The Charles Stark Draper Laboratory, Intersil, Linear Technology, Maxim

Williams, Brian C.

306

17. J. Haywood, The Penguin Historical Atlas of the Vi-kings (Penguin Books, London, 1995).  

E-Print Network [OSTI]

adenine dinucleotide phos- phate. Low micromolar concentrations of carbon monoxide inhibited the DNA binding activity of holo-NPAS2 but not that of apo-NPAS2. Upon exposure to carbon monoxide, inactive BMAL1 heme binding during the purification of NPAS2, a mammali- an bHLH (basic helix-loop-helix)­PAS tran

Rutter, Jared

307

Effect of Grain Size on Uranium(VI) Surface Complexation Kinetics...  

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

the contribution of variable grain sizes to uranium adsorptiondesorption in a sediment collected from the US DOE Hanford site. The sediment was wet-sieved into four size...

308

E-Print Network 3.0 - american caesalpiniaceae vi Sample Search...  

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

2011 Terry W Henkel Summary: associated with Dicymbe (Caesalpiniaceae) in Guyana. Advisor: Rytas Vilgalys. 1988 MS (Botany), University... to Armillaria (Physalacriaceae,...

309

Molecular Interactions of Plutonium(VI) with Synthetic Manganese-Substituted Goethite  

E-Print Network [OSTI]

WA 99352 Savannah River National Laboratory, Aiken, SCWork at the Savannah River National Laboratory (SRNL) was

Hu, Yung-Jin

2011-01-01T23:59:59.000Z

310

E-Print Network 3.0 - aortaklap tager vi Sample Search Results  

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

Ris National Laboratory Collection: Multidisciplinary Databases and Resources 73 LM Glasfiber er verdens strste pro-ducent af vinger til vindmller. Summary: er indstbt i...

311

RADIATION-INDUCED DECOMPOSITION OF U(VI) ALTERATION PHASES OF UO2  

SciTech Connect (OSTI)

U{sup 6+}-phases are common alteration products of spent nuclear fuel under oxidizing conditions, and they may potentially incorporate actinides, such as long-lived {sup 239}Pu and {sup 237}Np, delaying their transport to the biosphere. In order to evaluate the ballistic effects of {alpha}-decay events on the stability of the U{sup 6+}-phases, we report, for the first time, the results of ion beam irradiations (1.0 MeV Kr{sup 2+}) for six different structures of U{sup 6+}-phases: uranophane, kasolite, boltwoodite, saleeite, carnotite, and liebigite. The target uranyl-minerals were characterized by powder X-ray diffraction and identification confirmed by SAED (selected area electron diffraction) in TEM (transmission electron microscopy). The TEM observation revealed no initial contamination of uraninite in these U{sup 6+} phases. All of the samples were irradiated with in situ TEM observation using 1.0 MeV Kr{sup 2+} in the IVEM (intermediate-voltage electron microscope) at the IVEM-Tandem Facility of Argonne National Laboratory. The ion flux was 6.3 x 10{sup 11} ions/cm{sup 2}/sec. The specimen temperatures during irradiation were 298 and 673 K, respectively. The Kr{sup 2+}-irradiation decomposed the U{sup 6+}-phases to nanocrystals of UO{sub 2} at doses as low as 0.006 dpa. The cumulative doses for the pure U{sup 6+}-phases, e.g., uranophane, at 0.1 and 1 million years (m.y.) are calculated to be 0.009 and 0.09 dpa using SRIM2003. However, with the incorporation of 1 wt.% {sup 239}Pu, the calculated doses reach 0.27 and {approx}1.00 dpa in ten thousand and one hundred thousand years, respectively. Under oxidizing conditions, multiple cycles of radiation-induced decomposition to UO{sub 2} followed by alteration to U{sup 6+}-phases should be further investigated to determine the fate of trace elements that may have been incorporated in the U{sup 6+}-phases.

S. Utsunomiya; R.C. Ewing

2005-09-08T23:59:59.000Z

312

Radiation-Induced Decomposition of U(VI) Phase to Nanocrystals of UO2  

SciTech Connect (OSTI)

U{sup 6+}-phases are common alteration products, under oxidizing conditions, of uraninite and the UO{sub 2} in spent nuclear fuel. These U{sup 6+}-phases are subjected to a radiation field caused by the {alpha}-decay of U, or in the case of spent nuclear fuel, incorporated actinides, such as {sup 239}Pu and {sup 237}Np. In order to evaluate the effects of {alpha}-decay events on the stability of the U{sup 6+}-phases, we report, for the first time, the results of ion beam irradiations (1.0 MeV Kr{sup 2+}) of U{sup 6+}-phases. The heavy-particle irradiations are used to simulate the ballistic interactions of the recoil-nucleus of an {alpha}-decay event with the surrounding structure. The Kr{sup 2+}-irradiation decomposed the U{sup 6+}-phases to UO{sub 2} nanocrystals at doses as low as 0.006 displacements per atom (dpa). U{sup 6+}-phases accumulate substantial radiation doses ({approx}1.0 displacement per atom) within 100,000 years if the concentration of incorporated {sup 239}Pu is as high as 1 wt%. Similar nanocrystals of UO{sub 2} were observed in samples from the natural fission reactors at Oklo, Gabon. Multiple cycles of radiation-induced decomposition to UO{sub 2} followed by alteration to U{sup 6+}-phases provide a mechanism for the remobilization of incorporated radionuclides.

S. Utsunomiya; R.C. Ewing; L. Wang

2005-06-13T23:59:59.000Z

313

Genogroup IV and VI Canine Noroviruses Interact with Histo-Blood Group Antigens  

E-Print Network [OSTI]

tissue samples were donated by a large pharmaceutical company. The six dogs had been bred for scientific research but were deemed unsuitable for the purpose and were humanely euthanized. The use of rats for antibody generation was approved by the national... to F) humanely euthanized as surplus to industry research requirements. Sections of the gastrointestinal tract (1 cm2) were dissected from the duodenum, jejunum, ileum, cecum, and colon and placed into 90% ethanol fixative to best preserve...

Caddy, Sarah; Breiman, Adrien; le Pendu, Jacques; Goodfellow, Ian

2014-06-09T23:59:59.000Z

314

RSONANCE ET RELAXATION DES FLUORS DANS DES FLUORURES COMPLEXES D'URANIUM VI PULVRULENTS (1)  

E-Print Network [OSTI]

lev6e (par exemple pour UF 6' Ámol 2- 110 X 10-6 cgs) ; un important paramagnetisme de Van Vleck va de temperature ambiante. NaF, soigneusement d6shydrat6, est mis dans un reci- pient de Kel-F et UF6 est introduit

Paris-Sud XI, Université de

315

Magnetic resonance as a structural probe of a uranium (VI) sol-gel process  

SciTech Connect (OSTI)

NMR investigations on the ORNL process for sol-gel synthesis of microspherical nuclear fuel (UO{sub 2}), has been useful in sorting out the chemical mechanism in the sol-gel steps. {sup 13}C, {sup 15}N, and {sup 1}H NMR studies on the HMTA gelation agent (Hexamethylene tetramine, C{sub 6}H{sub l2}N{sub 4}) has revealed near quantitative stability of this adamantane-like compound in the sol-Gel process, contrary to its historical role as an ammonia source for gelation from the worldwide technical literature. {sub 17}0 NMR of uranyl (UO{sub 2}{sup ++}) hydrolysis fragments produced in colloidal sols has revealed the selective formation of a uranyl trimer, ((UO{sub 2}){sub 3}({mu}{sub 3}-O)({mu}{sub 2}-OH){sub 3}){sup +}, induced by basic hydrolysis with the HMTA gelation agent. Spectroscopic results show that trimer condensation occurs during sol-gel processing leading to layered polyanionic hydrous uranium oxides in which HMTAH{sup +} is occluded as an intercalation'' cation. Subsequent sol-gel processing of microspheres by ammonia washing results in in-situ ion exchange and formation of a layered hydrous ammonium uranate with a proposed structural formula of (NH{sub 4}){sub 2}((UO{sub 2}){sub 8}O{sub 4}(OH){sub 10}) {center dot} 8H{sub 2}0. This compound is the precursor to sintered U0{sub 2} ceramic fuel.

King, C.M.; Thompson, M.C.; Buchanan, B.R. (Westinghouse Savannah River Co., Aiken, SC (United States)); King, R.B. (Georgia Univ., Athens, GA (United States). Dept. of Chemistry); Garber, A.R. (South Carolina Univ., Columbia, SC (United States). Dept. of Chemistry)

1989-01-01T23:59:59.000Z

316

Magnetic resonance as a structural probe of a uranium (VI) sol-gel process  

SciTech Connect (OSTI)

NMR investigations on the ORNL process for sol-gel synthesis of microspherical nuclear fuel (UO{sub 2}), has been useful in sorting out the chemical mechanism in the sol-gel steps. {sup 13}C, {sup 15}N, and {sup 1}H NMR studies on the HMTA gelation agent (Hexamethylene tetramine, C{sub 6}H{sub l2}N{sub 4}) has revealed near quantitative stability of this adamantane-like compound in the sol-Gel process, contrary to its historical role as an ammonia source for gelation from the worldwide technical literature. {sub 17}0 NMR of uranyl (UO{sub 2}{sup ++}) hydrolysis fragments produced in colloidal sols has revealed the selective formation of a uranyl trimer, [(UO{sub 2}){sub 3}({mu}{sub 3}-O)({mu}{sub 2}-OH){sub 3}]{sup +}, induced by basic hydrolysis with the HMTA gelation agent. Spectroscopic results show that trimer condensation occurs during sol-gel processing leading to layered polyanionic hydrous uranium oxides in which HMTAH{sup +} is occluded as an ``intercalation`` cation. Subsequent sol-gel processing of microspheres by ammonia washing results in in-situ ion exchange and formation of a layered hydrous ammonium uranate with a proposed structural formula of (NH{sub 4}){sub 2}[(UO{sub 2}){sub 8}O{sub 4}(OH){sub 10}] {center_dot} 8H{sub 2}0. This compound is the precursor to sintered U0{sub 2} ceramic fuel.

King, C.M.; Thompson, M.C.; Buchanan, B.R. [Westinghouse Savannah River Co., Aiken, SC (United States); King, R.B. [Georgia Univ., Athens, GA (United States). Dept. of Chemistry; Garber, A.R. [South Carolina Univ., Columbia, SC (United States). Dept. of Chemistry

1989-12-31T23:59:59.000Z

317

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

SciTech Connect (OSTI)

Acidic uranium (U) contaminated plumes have resulted from acid-extraction of plutonium during the Cold War and from U mining and milling operations. A sustainable method for in-situ immobilization of U under acidic conditions is not yet available. Here, we propose to use humic acids (HAs) for in-situ U immobilization in acidic waste plumes. Our laboratory batch experiments show that HA can adsorb onto aquifer sediments rapidly, strongly and practically irreversibly. Adding HA greatly enhanced U adsorption capacity to sediments at pH below 5.0. Our column experiments using historically contaminated sediments from the Savannah River Site under slow flow rates (120 and 12 m/y) show that desorption of U and HA were non-detectable over 100 pore-volumes of leaching with simulated acidic groundwaters. Upon HA-treatment, 99% of the contaminant [U] was immobilized at pH < 4.5, compared to 5% and 58% immobilized in the control columns at pH 3.5 and 4.5, respectively. These results demonstrated that HA-treatment is a promising in-situ remediation method for acidic U waste plumes. As a remediation reagent, HAs are resistant to biodegradation, cost effective, nontoxic, and easily introducible to the subsurface.

Wan, J.; Dong, W.; Tokunaga, T.K.

2011-02-01T23:59:59.000Z

318

E-Print Network 3.0 - ammonium molybdate vi Sample Search Results  

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

+ HNO3 Solution, 250 ml Reagent 6: Methyl Green... Reagent 2: Sulfosalicylic Acid + CaCl2 Solution, 250 ml Reagent 3: 0.5 N NaOH, 250 ml Reagent 4: Ammonium... with this kit....

319

Regulation of Myosin VI transport, tethering to actin and cargo binding  

E-Print Network [OSTI]

ice cold PBS containing 1mM CaCl2 and 0.1 mM MgCl2 (PBS-CM)mM NaCl, 1 mM MgCl2, 0.1 mM CaCl2, 75 mM NaOH, 1% BSA for 90

Naccache, Samia Nidal

2006-01-01T23:59:59.000Z

320

TRANSIT TIMING OBSERVATIONS FROM KEPLER. VI. POTENTIALLY INTERESTING CANDIDATE SYSTEMS FROM FOURIER-BASED STATISTICAL TESTS  

SciTech Connect (OSTI)

We analyze the deviations of transit times from a linear ephemeris for the Kepler Objects of Interest (KOI) through quarter six of science data. We conduct two statistical tests for all KOIs and a related statistical test for all pairs of KOIs in multi-transiting systems. These tests identify several systems which show potentially interesting transit timing variations (TTVs). Strong TTV systems have been valuable for the confirmation of planets and their mass measurements. Many of the systems identified in this study should prove fruitful for detailed TTV studies.

Steffen, Jason H. [Fermilab Center for Particle Astrophysics, P.O. Box 500, MS 127, Batavia, IL 60510 (United States); Ford, Eric B. [Astronomy Department, University of Florida, 211 Bryant Space Sciences Center, Gainesville, FL 32111 (United States); Rowe, Jason F.; Borucki, William J.; Bryson, Steve; Caldwell, Douglas A.; Jenkins, Jon M.; Koch, David G.; Sanderfer, Dwight T.; Seader, Shawn; Twicken, Joseph D. [NASA Ames Research Center, Moffett Field, CA 94035 (United States); Fabrycky, Daniel C. [UCO/Lick Observatory, University of California, Santa Cruz, CA 95064 (United States); Holman, Matthew J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Welsh, William F. [Astronomy Department, San Diego State University, San Diego, CA 92182-1221 (United States); Batalha, Natalie M. [Department of Physics and Astronomy, San Jose State University, San Jose, CA 95192 (United States); Ciardi, David R. [NASA Exoplanet Science Institute/California Institute of Technology, Pasadena, CA 91125 (United States); Kjeldsen, Hans [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Prsa, Andrej, E-mail: jsteffen@fnal.gov [Department of Astronomy and Astrophysics, Villanova University, 800 East Lancaster Avenue, Villanova, PA 19085 (United States)

2012-09-10T23:59:59.000Z

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


321

Duty Hours Language VI. Resident Duty Hours in the Learning and Working Environment  

E-Print Network [OSTI]

-house call. E. On-call Activities 1. In-house call must occur no more frequently than every third night

Kay, Mark A.

322

cole normale suprieure Universit Paris VI Pierre et Marie Curie Dpartement d'Informatique  

E-Print Network [OSTI]

différentielle sur C . . . . . . . . . . . . . . . . . . . 27 4 PMI et PMI+ 31 4.1 PMI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.2 PMI et les attaques algébriques de déchiffrement . . . . . . . . . . 32 4.3 Un biais-Granboulan-Stern . . . . 35 4.3.2 Une attaque alternative . . . . . . . . . . . . . . . . . . . . 36 4.4 PMI

Paris-Sud XI, Université de

323

Sustainable Practices Policy Sections II, III.I. and V.I. Sustainable Water Systems  

E-Print Network [OSTI]

areas of a building located outside of the enclosed structure). OGSF50 is also known as "California consumption because it contains objectionable pollution, contamination minerals or infective agents, including in the context of the local watershed, and enhance economic, social and environmental sustainability while

California at Santa Cruz, University of

324

Universit Paris VI Pierre et Marie Curie cole Doctorale Cerveau Cognition Comportement  

E-Print Network [OSTI]

Contrôle cortico-spinal à partir des aires motrices et pré-motrices impliquant le système propriospinal Contrôle cortico-spinal à partir des aires motrices et pré-motrices impliquant le système propriospinal commandes motrices provenant de structures supérieures, ainsi que l'initiation et la terminaison du

Paris-Sud XI, Université de

325

Microsoft Word - U(VI)andSr(II)BatchSorption bh  

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

C and D point towards some of the precipitates. Uranium and Strontium Batch Sorption and Diffusion Kinetics into Mesoporous Silica Important reactive phenomena that affect the...

326

Infrared reflectance and transmission spectra in II-VI alloys and superlattices  

E-Print Network [OSTI]

Room temperature measurements of the far-infrared (FIR) reflectance spectra are reported for the polar optical phonons in a series of bulk Cd[subscript x]Zn[subscript 1?x]Te (0 ? x ? 1) and CdSe[subscript x]Te[subscript ...

Talwar, Devki N.

327

Computation of the National Renewable Energy Laboratory Phase-VI Rotor in Pitch Motion during Standstill  

SciTech Connect (OSTI)

Previously, computational fluid dynamics (CFD) computations of dynamic stall on wind turbine blades have been performed for stand still conditions with moderate success by among others the present authors. In the present work, numerical investigations are performed to illustrate the possibilities of state of the art CFD methods for this problem, including the numerical requirements as time-step and grid resolution. Additionally, the effect of different types of modeling is investigated, ranging from fully turbulent Reynolds-averaged Navier-Stokes (RANS), transitional RANS, to transitional delayed detached-eddy simulation computations. The investigation indicates that detailed information and fair agreement with measurements can be obtained.

Sorensen, N. N.; Schreck, S.

2012-04-01T23:59:59.000Z

328

50 CFR Ch. VI (10110 Edition) 600.345 (iii) The extent to which the fishery  

E-Print Network [OSTI]

measures should not im- pose unnecessary burdens on the econ- omy, on individuals, on private or pub- lic should be designed to give fishermen the greatest possible freedom of action in conducting business of the private sec- tor to another, or from the government to the private sector. Redistribution of costs through

329

PROCEEDINGS OF RIKEN BNL RESEARCH CENTER, RHIC SPIN COLLABORATION MEETING VI, VOLUME 36.  

SciTech Connect (OSTI)

The sixth meeting of the RHIC Spin Collaboration (RSC) took place on October 1, 2001 at Brookhaven National Laboratory. RHIC is now in its second year of operation for physics production and the first polarized proton collision run at {radical}s=200 GeV is expected to start in eight weeks. The RSC has developed a plan for this coming run through two previous meetings, RHIC Spin Physics III (August 3, 2000) and IV (October 13-14, 2000). We requested the following: two weeks of polarized proton studies in AGS, three weeks of polarized collider commissioning, and five weeks of polarized proton physics run. As a result, we have obtained all we asked and the above plans are implemented in the current operation schedule. The focus of the present meeting was to bring all involved in the RHIC Spin activities up-to-date on the progress of machine development, theory issues, and experimental issues. This meeting was right after the Program Advisory Committee (PAC) meeting and it started with the comments on the PAC discussion by Gerry Bunce, who was informed about the PAC deliberations by Tom Kirk. The PAC was fully supportive to complete the proposed spin program within the currently available budget for RHIC run 2 operations. Gerry further explained the expected luminosity to be {integral} Ldt = 0.5 pb{sup -1} per week, reflecting the current machine status. The introductory session also had a talk from Werner Vogelsang that reviewed the progress in perturbative QCD theory focused on spin effects.

BLAND,L.; SAITO,N.

2001-10-10T23:59:59.000Z

330

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

E-Print Network [OSTI]

Soil HA (Elliott) and a reference Peat HA (Pahokee) from theHA after we found that the Peat HA has similar effect. HAof total 50 mg/L Soil HA and Peat HA separately. (4) Testing

Wan, J.

2011-01-01T23:59:59.000Z

331

screw, which serves as a point on which the scale vi  

E-Print Network [OSTI]

object is at the level of the battery, it is necessary to employ an angle of ?re equal to the angle of arrival which we wish to attain. But let us suppose that the angle ...

332

Mesoporous magnetic carbon nanocomposite fabrics for highly efficient Cr(VI) removal  

E-Print Network [OSTI]

-up production a Integrated Composites Laboratory (ICL), Dan F Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA. E-mail: zhanhu.guo@ lamar.edu; suying.wei@lamar.edu; Tel: +1 (409) 8

Guo, John Zhanhu

333

Rational Ligand Design for U(VI) and Pu(IV)  

E-Print Network [OSTI]

HOPO ligand with uranyl nitrate and Et 3 N or methanolic KOHbis-Me-3,2-HOPO ligand, uranyl nitrate, and Et 3 N in DMF oruranyl complexes are difficult to separate from the mixture of potassium, tetramethylammonium and nitrate

Szigethy, Geza

2010-01-01T23:59:59.000Z

334

Recent developments in Cr{sup 2+}-doped II-VI compound lasers  

SciTech Connect (OSTI)

Transition-metal-doped zinc chalcogenide crystals have recently been investigated as potential mid-IR lasers. Tetrahedrally-coordinated Cr{sup 2+} ions are especially attractive as lasants on account of high luminescence quantum yields for emission in the 2000-3000 nm range. {sup 5}E radiative lifetimes and emission cross sections are respectively {approximately}10 {mu}sec and {approximately}10{sup -18} cm{sup 2}. The associated absorption band peaked at {approximately}1800 nm enables laser-diode pumping of the Cr{sup 2+} systems. Laser demonstrations with ZnS:Cr and ZnSe:Cr (using a MgF{sub 2}:Co{sup 2+} laser pump source) gave slope efficiencies up to 30%. Excited-state-absorption losses appear small, and passive losses dominate. Tuning experiments with a birefringent filter evidence a tuning range covering at least 2280 - 2530 nm. Cr-doped laser samples can be produced by Bridgman growth, seeded physical vapor transport, or diffusion doping.

Page, R.H.; DeLoach, L.D.; Schaffers, K.I., Patel, F.D.; Beach, R.J.; Payne, S.A.; Krupke, W.F. [Lawrence Livermore National Lab., CA (United States); Burger, A. [Fisk Univ., Nashville, TN (United States). Center for Photonic Materials and Devices

1996-09-01T23:59:59.000Z

335

Complexation of Gluconate with Uranium(VI) in Acidic Solutions: Thermodynamic Study with Structural Analysis  

E-Print Network [OSTI]

uranium is approximately one order of magnitude lower than expected, suggesting that the coordination chemistry

Zhang, Zhicheng

2009-01-01T23:59:59.000Z

336

Behavior of Uranium(VI) during HEDPA Leaching for Aluminum Dissolution in Tank Waste Sludges  

E-Print Network [OSTI]

Dissolution in Tank Waste Sludges Brian A. Powell 1 ,to produce a clay-like sludge layer, a slurry phase, and anto be concentrated in the sludge phase, which is primarily

Powell, Brian A.; Rao, Linfeng; Nash, Kenneth L.; Martin, Leigh

2006-01-01T23:59:59.000Z

337

Examination of Uranium(VI) Leaching During Ligand Promoted Dissolution of Waste Tank Sludge Surrogates  

E-Print Network [OSTI]

in Hanford waste tank sludge simulants. J. Nucl. Sci.from simulated tank waste sludges. Sep. Sci. Tech. 38(2),Dissolution of Waste Tank Sludge Surrogates. In preparation,

Powell, Brian A.

2008-01-01T23:59:59.000Z

338

The European Large Area ISO Survey VI - Discovery of a new hyperluminous infrared galaxy  

E-Print Network [OSTI]

We report the discovery of the first hyperluminous infrared galaxy (HyLIG) in the course of the European Large Area ISO Survey (ELAIS). This object has been detected by ISO at 6.7, 15, and 90 microns, and is found to be a broad-line, radio-quiet quasar at a redshift: z = 1.099. From a detailed multi-component model fit of the spectral energy distribution, we derive a total infrared luminosity: L_IR (1-1000 microns) ~ 1.0 x 10E13 h_65^-2 L_sun (q_0 = 0.5), and discuss the possible existence of a starburst contributing to the far-IR output. Observations to date present no evidence for lens magnification. This galaxy is one of the very few HyLIGs with an X-ray detection. On the basis of its soft X-ray properties, we suggest that this broad-line object may be the face-on analogue of narrow-line, Seyfert-like HyLIGs.

T. Morel; A. Efstathiou; S. Serjeant; I. Marquez; J. Masegosa; P. Heraudeau; C. Surace; A. Verma; S. Oliver; M. Rowan-Robinson; I. Georgantopoulos; D. Farrah; D. M. Alexander; I. Perez-Fournon; C. J. Willott; F. Cabrera-Guerra; E. A. Gonzalez-Solares; A. Cabrera-Lavers; J. I. Gonzalez-Serrano; P. Ciliegi; F. Pozzi; I. Matute; H. Flores

2001-07-09T23:59:59.000Z

339

Th`ese de doctorat de l'universite Paris VI  

E-Print Network [OSTI]

´et´e num´eriques. Je suis recon- naissant `a Florent Calvo de m'avoir donn´e go^ut aux m´ethodes num

Boyer, Edmond

340

Microsoft Word - ViArray_Fact_ Sheet_SAND2011-3935P_updated_format...  

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

4 Pipeline A 8 D-A Conve 8 Multiplexe 2 Temperatu 64 Comparat 48 Amplifier 128 Analog 1 Analog Tra dard P For mo Corporation, a w lear Security Adm W d-Signal Die Size...

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


341

Electrodeposited doped II-VI semiconductor films and devices incorporating such films  

SciTech Connect (OSTI)

This patent describes a photovoltaic device. It comprises: a first thin film of a compound semiconductor of a first conductivity type including tellurium and a metal selected from Group IIB of the Periodic Table of Elements and containing as a dopant impurity in a concentration not exceeding 10{sup 20} atoms per cubic centimeter a metal selected from Group IB, a second semiconductor thin film in contact with the first semiconductor thin film and having a second conductivity type opposite that of the first conductivity type and electrical contacts to each of the first and second semiconductor thin films. Also described is the device wherein the first thin film is p-type cadmium telluride.

Ondris, M.; Picher, M.A.; Brownfield, R.E.

1990-03-20T23:59:59.000Z

342

I. ASCRC General Education Form Group VI Historical and Cultural Studies  

E-Print Network [OSTI]

of the Industrial Revolution. V. Student Learning Goals: Briefly explain how this course will meet the applicable of modernization unleashed by the Industrial Revolution. In the first half of the course, we examine the process-century Romanticism developed as an esthetic response to the forces of modernization unleashed by the Industrial

Vonessen, Nikolaus

343

Co-extraction of Am(VI) and the major actinides with tributyl phosphate  

SciTech Connect (OSTI)

Sodium bismuthate was found to be an effective oxidant for Am in nitric acid solutions up to 6 M in concentration. However, in the presence of tributyl phosphate, americium was quickly reduced to the trivalent state, resulting in low distribution ratios. Pre-equilibration of the organic phase with bismuthate at the appropriate acid concentration was not effective at preventing americium reduction by tributyl phosphate. However, when a small amount of perchloric acid was added to the acidic, bismuthate-containing aqueous phase, much higher distribution ratios for americium extraction were achieved. Data comparing the extraction of americium to hexavalent uranium, neptunium and plutonium are presented. Slope analysis was used to confirm the extraction of americium in the hexavalent state. (authors)

Mincher, Bruce J.; Martin, Leigh R.; Schmitt, Nicholas C. [Idaho National Laboratory, P.O. Box 1625, Idaho Falls, ID, 83413-7113 (United States)

2007-07-01T23:59:59.000Z

344

ENTROPY OF FORMATION OF VACANCIES IN SOLIDS Laboratoire d'Electrochimie (*), Universit Paris VI  

E-Print Network [OSTI]

L-9 ENTROPY OF FORMATION OF VACANCIES IN SOLIDS F. BÃ?NIÃ?RE Laboratoire d of the vacancy are identified to those in the liquid state. This leads in a first approximation to the relation. In these crystals, the thermodynamic parameters of formation of a Schottky defect (cation vacancy + anion vacancy

Paris-Sud XI, Université de

345

UNIVERSITE PIERRE ET INSTITUT FRANCAIS MARIE CURIE -PARIS VI DU PETROLE  

E-Print Network [OSTI]

: MODELISATION DE L'AUTO-INFLAMMATION ET DE LA COMBUSTION POUR LES MOTEURS DIESEL soutenue le 9 decembre 1997 COMBUSTION POUR LES MOTEURS DIESEL Antonio Pires da Cruz - Institut Francais du Petrole 1 et 4 Av. Bois Preau- teurs Diesel. L'accent est mis sur la prise en compte des e ets induits par la turbulence. Seule l

Boyer, Edmond

346

Chapter 27 -- Breast Cancer Genomics, Section VI, Pathology and Biological Markers of Invasive Breast Cancer  

E-Print Network [OSTI]

2007;318:1108–1113.   8.  Cancer Genome Atlas Network.  somatic mutation in human cancer genomes.   Nature 2007;446:153–158.   11.  Katoh M.  Cancer genomics and genetics of 

Spellman, Paul T.

2011-01-01T23:59:59.000Z

347

Petrographic characterization of Kentucky coals. Final report. Part VI. The nature of pseudovitrinites in Kentucky coals  

SciTech Connect (OSTI)

Overall average pseudovitrinite content for 1055 eastern Kentucky coal samples is nearly 9% while average percentage of pseudovitrinite for 551 western Kentucky coals is approximately 4%. Examination of variation in pseudovitrinite content relative to rank changes shows uniformity in pseudovitrinite percentages within the 4 to 7 V-type interval for eastern Kentucky coals but a gradual increase in pseudovitrinite content for western Kentucky coals over the same rank interval. Coals from both coal fields show similar, distinct increases in pseudovitrinite percentage in the highest V-type categories. However, it is suggested here that these supposed increases in pseudovitrinite percentages are not real but rather, indicate distinct increase in the brightness of nitrinite resulting from increased alteration of vitrinite beginning at this stage of coalification and continuing into the higher rank stages. This conclusion is reached when it is found that differences between pseudovitrinite and vitrinite reflectance are least in coals at these high rank intervals of Kentucky and, also, when vitrinite particles are often visually observed having brightness equal to that of pseudovitrinite particles. Relation of pseudovitrinite to other sulfur forms and total sulfur in general shows no significant trends, although the relatively high pyritic sulfur content in western Kentucky coals, coupled with relatively low inert percentages suggest the existence of predominantly reducing, or at least non-oxidizing conditions in the Pennsylvanian peat swamps of western Kentucky. Initial work involving Vicker's microhardness testing of coals indicates that microhardness values for pseudovitrinite are higher than those for vitrinite within the same sample regardless of coal rank or coal field from which the sample was collected. 15 references, 9 figures, 9 tables.

Trinkle, E.J.; Hower, J.C.

1984-02-01T23:59:59.000Z

348

VI CONGRESO DEL CEISAL Toulouse, del 30 de junio al 3 de Julio de 2010  

E-Print Network [OSTI]

. Universidad Popular Autónoma del Estado de Puebla Posgrado en Negocios Internacionales y actual Candidato a Doctor en Negocios Internacionales Líneas de investigación: la globalización y el ambiente de los negocios internacionales 21 sur 1103 Colonia Santiago, C.P. 72160, Puebla, México Teléfono (222

Paris-Sud XI, Université de

349

Rational Ligand Design for U(VI) and Pu(IV)  

E-Print Network [OSTI]

Murali, M. S. ; Nash, K. L. Solv. Extr. Ion Exch. 2001, 19,D. C. ; Raymond, K. N. Solv. Extr. Ion Exch. 2004, 22, (22)DMF) and UO 2 (bis-Me-3,2-HOPO)(solv) tabulated in Table 2-

Szigethy, Geza

2010-01-01T23:59:59.000Z

350

Ac#vi#es of the US Burning Plasma Organiza#on  

E-Print Network [OSTI]

=ons · USBPO ­ Coordinates US burning plasma research, to advance scien=fic understanding USBPO organizes the US Fusion Energy Science community to support burning plasma research 5 Charles Greenfield (Director) Amanda Hubbard (Deputy Director) Nermin

351

Determining Individual Mineral Contributions To U(VI) Adsorption In A  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phasesData FilesShape, Density,TiO2(110). |Gas-phase

352

VI-12 STUDENTS WHO RECEIVED GRADUATE DEGREES FROM THESIS WORK CONDUCTED  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV >41 - March 31,3 -2

353

VI-12 STUDENTS WHO RECEIVED GRADUATE DEGREES FROM THESIS WORK CONDUCTED  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV >41 - March 31,3 -23

354

Particle Number & Particulate Mass Emissions Measurements on a 'Euro VI'  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSalesOE0000652 Srivastava,Pacific1ofDepartmentb. PartHeavy-duty

355

Abiotic Reductive Immobilization of U(VI) by Biogenic Mackinawite. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects of GlobalASCRAbigail Ferrieri Abigail

356

Characterization of a type vi secretion system and related proteins of pseudomonas syringae  

E-Print Network [OSTI]

secreted effectors and toxins, to develop a pathogenic interaction with its host. The B728a genome was recently sequenced, revealing the presence of 1,297 genes with unknown function. This dissertation demonstrates that a 29.9-kb cluster of genes in the B...

Records, Angela Renee

2009-05-15T23:59:59.000Z

357

Laser radar VI; Proceedings of the Meeting, Los Angeles, CA, Jan. 23-25, 1991  

SciTech Connect (OSTI)

Topics presented include lidar wind shear detection for commercial aircraft, centroid tracking of range-Doppler images, an analytic approach to centroid performance analysis, simultaneous active/passive IR vehicle detection, and resolution limits for high-resolution imaging lidar. Also presented are laser velocimetry applications, the application of laser radar to autonomous spacecraft landing, 3D laser radar simulation for autonomous spacecraft landing, and ground based CW atmospheric Doppler lidar performamce modeling.

Becherer, R.J.

1991-01-01T23:59:59.000Z

358

Examination of Uranium(VI) Leaching During Ligand Promoted Dissolution of Waste Tank Sludge Surrogates  

E-Print Network [OSTI]

speciation in Hanford waste tank sludge simulants. J. Nucl.and Sr(II) from simulated tank waste sludges. Sep. Sci.Promoted Dissolution of Waste Tank Sludge Surrogates. In

Powell, Brian A.

2008-01-01T23:59:59.000Z

359

Behavior of Uranium(VI) during HEDPA Leaching for Aluminum Dissolution in Tank Waste Sludges  

E-Print Network [OSTI]

Aluminum Dissolution in Tank Waste Sludges Brian A. PowellThe underground storage tanks at the Hanford site containtime, the material in the tanks has stratified to produce a

Powell, Brian A.; Rao, Linfeng; Nash, Kenneth L.; Martin, Leigh

2006-01-01T23:59:59.000Z

360

National Energy Board Act Part VI (Oil and Gas) Regulations (Canada)  

Broader source: Energy.gov [DOE]

These regulations from the National Energy Board cover licensing for oil and gas, including the exportation and importation of natural gas. The regulations also cover inspections, reporting...

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


361

Hanford Tank Farms Waste Feed Flow Loop Phase VI: PulseEcho System Performance Evaluation  

SciTech Connect (OSTI)

This document presents the visual and ultrasonic PulseEcho critical velocity test results obtained from the System Performance test campaign that was completed in September 2012 with the Remote Sampler Demonstration (RSD)/Waste Feed Flow Loop cold-test platform located at the Monarch test facility in Pasco, Washington. This report is intended to complement and accompany the report that will be developed by WRPS on the design of the System Performance simulant matrix, the analysis of the slurry test sample concentration and particle size distribution (PSD) data, and the design and construction of the RSD/Waste Feed Flow Loop cold-test platform.

Denslow, Kayte M.; Bontha, Jagannadha R.; Adkins, Harold E.; Jenks, Jeromy WJ; Hopkins, Derek F.

2012-11-21T23:59:59.000Z

362

Fe(III) Reduction and U(VI) Immobilization by Paenibacillus sp. Strain  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolutionFES6FYRANDOMOverview The652CASL-U-2014-0014-002300A,

363

The effect of U(VI) bioreduction kinetics on subsequent reoxidation of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 andThe MolecularPlaceTheof carbonbiogenic U(IV). |

364

Identification of simultaneous U(VI) sorption complexes and U(IV)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinementEtching. |Endecaheme c-Type

365

T-637: VMSA-2011-0009 VMware hosted product updates, ESX patches and VI ,  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage »of Energy StrainClient update resolve multiple | Department of Energy

366

Reaction of U-VI with titanium-substituted magnetite: Influence of Ti on  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared at 278, 298, andEpidermal Growth Factor.Tariff Ratesthat

367

Reduction of U(VI) Incorporated in the Structure of Hematite. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared at 278, 298,NIST 800-53 NationalTreatment. | EMSL

368

Incorporation of Np(V) and U(VI) in Carbonate and Sulfate Minerals  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinementEtching.348 270 300Aptamersstability

369

Investigation of U(VI) Adsorption in Quartz-Chlorite Mineral Mixtures. |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponses toInvestigating ExtremeInvestigation

370

U(VI) sorption and reduction kinetics on the magnetite (111) surface. |  

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

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371

Effect of Co-solutes on the Products and Solubility of Uranium(VI)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed NewcatalystNeutronEnvironmentZIRKLE FRUITYear 1MATERIALS

372

Effect of Grain Size on Uranium(VI) Surface Complexation Kinetics and  

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

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373

Microbial Reduction of Intragrain U(VI) in Contaminated Sediment. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces andMapping theEnergyInnovationMichael M.

374

Microbial Reductive Transformation of Phyllosilicate Fe(III) and U(VI) in  

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

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375

Microsoft PowerPoint - TAB B 02-12-08 Article VI Briefing Interagency Ford Comments  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces andMapping Richland OperationsU.S.OnlineTank09 Little27,Earl28 MarchStates

376

Microsoft Word - U(VI)andSr(II)BatchSorption bh  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challenge fundProject8 -3 Subject: Trident Management Trident is

377

Structure of ABC Transporter MsbA in Complex with ATP Vi and  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSiteNeutronStrategicOur MissionStructure and

378

Structure, Kinetics, and Thermodynamics of the Aqueous Uranyl(VI) Cation. |  

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

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379

Kinetics of Microbial Reduction of Solid Phase U(VI). | EMSL  

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

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380

PART TWO PERMITTING/CLOSURE OF TSD UNITS/GROUPS ARTICLE VI. FINDINGS AND DETERMINATIONS  

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

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Note: This page contains sample records for the topic "ytown gran vi" from the National Library of EnergyBeta (NLEBeta).
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381

Tank Operations Contract No. DE-A C27-08R VI 4800  

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

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382

Tank Operations Contract No. DE-AC27-08R Vi4800  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAboutManus Site-Inactive TWPCarbonTakeRV 14800 ContractR

383

Fe(III) Reduction and U(VI) Immobilization by Paenibacillus sp...  

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

of either of electron transfer mediators (ETMs) flavin mononucleotide (FMN) or anthraquinone-2,6-disulfonate (AQDS). Maximum initial Fh reduction rates were observed at...

384

Microbial Reduction of U(VI) at the Solid-Water Interface  

E-Print Network [OSTI]

. Addition of the electron shuttling agent anthraquinone-2,6-disulfonate (AQDS; 0.1 mM) enhanced the rate

Roden, Eric E.

385

Rational Ligand Design for U(VI) and Pu(IV)  

SciTech Connect (OSTI)

Nuclear power is an attractive alternative to hydrocarbon-based energy production at a time when moving away from carbon-producing processes is widely accepted as a significant developmental need. Hence, the radioactive actinide power sources for this industry are necessarily becoming more widespread, which is accompanied by the increased risk of exposure to both biological and environmental systems. This, in turn, requires the development of technology designed to remove such radioactive threats efficiently and selectively from contaminated material, whether that be contained nuclear waste streams or the human body. Raymond and coworkers (University of California, Berkeley) have for decades investigated the interaction of biologically-inspired, hard Lewis-base ligands with high-valent, early-actinide cations. It has been established that such ligands bind strongly to the hard Lewis-acidic early actinides, and many poly-bidentate ligands have been developed and shown to be effective chelators of actinide contaminants in vivo. Work reported herein explores the effect of ligand geometry on the linear U(IV) dioxo dication (uranyl, UO{sub 2}{sup 2+}). The goal is to utilize rational ligand design to develop ligands that exhibit shape selectivity towards linear dioxo cations and provides thermodynamically favorable binding interactions. The uranyl complexes with a series of tetradentate 3-hydroxy-pyridin-2-one (3,2-HOPO) ligands were studied in both the crystalline state as well as in solution. Despite significant geometric differences, the uranyl affinities of these ligands vary only slightly but are better than DTPA, the only FDA-approved chelation therapy for actinide contamination. The terepthalamide (TAM) moiety was combined into tris-beidentate ligands with 1,2- and 3,2-HOPO moieties were combined into hexadentate ligands whose structural preferences and solution thermodynamics were measured with the uranyl cation. In addition to achieving coordinative saturation, these ligands exhibited increased uranyl affinity compared to bis-Me-3,2-HOPO ligands. This result is due in part to their increased denticity, but is primarily the result of the presence of the TAM moiety. In an effort to explore the relatively unexplored coordination chemistry of Pu(IV) with bidentate moieties, a series of Pu(IV) complexes were also crystallized using bidentate hydroxypyridinone and hydroxypyrone ligands. The geometries of these complexes are compared to that of the analogous Ce(IV) complexes. While in some cases these showed the expected structural similarities, some ligand systems led to significant coordination changes. A series of crystal structure analyses with Ce(IV) indicated that these differences are most likely the result of crystallization condition differences and solvent inclusion effects.

Szigethy, Geza

2009-08-12T23:59:59.000Z

386

ETAG European Technology Assessment ITAS DBT viWTA POST Rathenau  

E-Print Network [OSTI]

are concentrated in a few countries. The Rising gas and oil prices along with demands on lower emissions of CO2: Technologies for wind energy, wave energy, geothermal energy, bioenergy, solar energy, hydropower and fuel

387

Regmi Research Series ,Year 13, December 1, 1981  

E-Print Network [OSTI]

of Olangchung ' 10 . The Ncya MUluk . 11. Administrative Arrangements in the Eastern Tara! Reeion and Chitaun 12. Ja.&1r 'l-.ent.s. 1n Bode Vill agE:. '"13 . Levy on .Tag! r Incomes, 1891 14, Supply o f Timber 1n Munition s Factory . 15 . Jhara Exemption... .Uiries . Rcmissi.ons shall be gran ted to you on an annual basis for lands gr'Nl ted according_ to t?l!se rules unde r the c01lnter-sigoa,ture of the Chaudhari, the Kanugoye flnd the J aibar . . - Supply ~hQta ond tagaVi cre.dit for land recJ.amation ,and...

Regmi, Mahesh C

1981-01-01T23:59:59.000Z

388

Low Latency Stochastic Filtering Software Firewall Architecture  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . 29 V METHODOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . 31 VI RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 v VI-A. Incremental Cleared Bloom Filter . . . . . . . . . . . 37 VI-A.1. Latency... . . . . . . . . . . . . . . . . . . . . . . 37 VI-A.2. Bandwidth . . . . . . . . . . . . . . . . . . . . 39 VI-A.3. Reduction in Dropped Packets . . . . . . . . . 40 VI-A.4. False Positive Rate . . . . . . . . . . . . . . . . 42 VI-B. Cold Cleared Bloom Filter...

Ghoshal, Pritha

2012-08-29T23:59:59.000Z

389

Computergestutztes wissenschaftliches Rechnen Alexander K. Hartmann, Universitat Gottingen  

E-Print Network [OSTI]

: Kette von harten Teilchen i mit Masse mi, Ort xi, Geschwindigkeit vi T1 T2 W¨ande bei x = 0/x = L mit W¨aremb¨adern (Temperatur T1/T2). Wechselwirkung der Teilchen i.i + 1: idealer Sto� (vorher vi, nachher vi) vi = mi - mi+1 mi + mi+1 vi + 2mi+1 mi + mi+1 vi+1 vi+1 = 2mi mi + mi+1 vi - mi - mi+1 mi + mi+1 vi+1 (1

Hartmann, Alexander K.

390

In the Beginnings: The Apotropaic Use of Scriptural Incipits in Late Antique Egypt  

E-Print Network [OSTI]

VI CE. b. Provenance: Egypt (Oxyrhynchus). c. Material:V-VI CE. b. Provenance: Egypt (Hermopolis? ). c. Material:VI CE. b. Provenance: Egypt (unknown). c. Material: papyrus.

Sanzo, Joseph Emanuel

2012-01-01T23:59:59.000Z

391

E-Print Network 3.0 - adenom efter peroral Sample Search Results  

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

SAMMANFATTAR AKTUELL FORSKNING Summary: - granen bttre n sitt rykte Att plantera gran efter tidigare rotrteinfekterad gran gr bttre n mnga... viktig faktor fr...

392

First-principles study on the effective masses of zinc-blend-derived Cu2Zn-IV-VI4 (IV=Sn, Ge, Si and VI=S, Se)  

E-Print Network [OSTI]

and Department of Physics, Fudan University, Shanghai 200433, China 2 Key Laboratory of Polar Materials and Devices (MOE), East China Normal University, Shanghai 200241, China 3 National Renewable Energy Laboratory atten- tion as potential solar cell absorber materials. The reported band gaps of these materials

Gong, Xingao

393

Quantifying differences in the impact of variable chemistry on equilibrium uranium(VI) adsorption properties of aquifer sediments  

SciTech Connect (OSTI)

Uranium adsorption-desorption on sediment samples collected from the Hanford 300-Area, Richland, WA varied extensively over a range of field-relevant chemical conditions, complicating assessment of possible differences in equilibrium adsorption properties. Adsorption equilibrium was achieved in 500-1000 hours although dissolved uranium concentrations increased over thousands of hours owing to changes in aqueous chemical composition driven by sediment-water reactions. A non-electrostatic surface complexation reaction, >SOH + UO22+ + 2CO32- = >SOUO2(CO3HCO3)2-, provided the best fit to experimental data for each sediment sample resulting in a range of conditional equilibrium constants (logKc) from 21.49 to 21.76. Potential differences in uranium adsorption properties could be assessed in plots based on the generalized mass-action expressions yielding linear trends displaced vertically by differences in logKc values. Using this approach, logKc values for seven sediment samples were not significantly different. However, a significant difference in adsorption properties between one sediment sample and the fines (<0.063 mm) of another could be demonstrated despite the fines requiring a different reaction stoichiometry. Estimates of logKc uncertainty were improved by capturing all data points within experimental errors. The mass-action expression plots demonstrate that applying models outside the range of conditions used in model calibration greatly increases potential errors.

Stoliker, Deborah L.; Kent, Douglas B.; Zachara, John M.

2011-09-16T23:59:59.000Z

394

CdTe/CdSe/CdTe heterostructure nanorods and I-III-VI? nanocrystals: synthesis and characterization.  

E-Print Network [OSTI]

??Semiconductor nanocrystals are interesting candidates as new light-absorbing materials for photovoltaic (PV) devices. They can be dispersed in solvents and cheaply deposited at low-temperature on… (more)

Koo, Bonil

2010-01-01T23:59:59.000Z

395

Rate-limited U(VI) desorption during a small-scale tracer test in a hetereogeneous uranium contaminated aquifer  

E-Print Network [OSTI]

Work Plan for the UMTRA project Old Rifle site, GrandMill Tailings Remedial Action (UMTRA) sites and the Savannahof the contamination at the UMTRA sites lies within shallow

Fox, P.M.

2013-01-01T23:59:59.000Z

396

STRUCTURE OF PENTAKIS (UREA) DIOXOURANIUM(VI)NITRATE LUO2 (OC (NH2)2)5 (NO3) 2  

E-Print Network [OSTI]

2(OC(NH 2 )2)5](N0 3 )2 by Allan Zalkin*, Helena Ruben andU0 2 (OC(NH 2)2)5](N0 3)2 by Allan Zalkin, Hel~na Ruben and

Zalkin, Allan

2011-01-01T23:59:59.000Z

397

1993 Annual PCB Document for Los Alamos National Laboratory EPA Region VI, January 1, 1993 through December 31, 1993  

SciTech Connect (OSTI)

This document, the {open_quotes}1993 Annual PCB Document for Los Alamos National Laboratory{close_quotes} was prepared to fulffill the requirements of the federal PCB (Polychlorinated Biphenyl) regulation: 40 CFR 761 Subpart J General Records and Reports. The PCB Management Program at Los Alamos National Laboratory (LANL), Environmental Protection Group, compiled this 1993 Annual PCB Document. The overall format generally follows the sequence of the applicable regulations. Subsection 1.2 cross references those regulatory requirements with the applicable Document Section. The scope of this document also includes status summaries of various aspects of LANL`s PCB Management Program. The intent of this approach to the Annual Document is to provide an overview of LANL`s PCB Management Program and to increase the usefulness of this document as a management tool. Section 2.0, {open_quotes}Status of the PCB Management Program{close_quotes}, discusses the use, generation of waste, and storage of PCBs at LANL. Section 3.0 is the 1993 Annual Document Log required by 761.180(a). This Section also discusses the PCB Management Program`s policies for reporting under those regulatory requirements. Sections 4.0 and 5.0 contain the 1993 Annual Records for off-site and on-site disposal as required by 761.180(b). There is a tab for each manifest and its associated continuation sheets, receipt letters, and certificates of disposal.

Wechsler, R.J.; Sandoval, T.M.; Bryant, D.E.; Hupke, L.; Esquibel, L.

1995-12-31T23:59:59.000Z

398

THE ADVANCED CAMERA FOR SURVEYS NEARBY GALAXY SURVEY TREASURY. VI. THE ANCIENT STAR-FORMING DISK OF NGC 404  

SciTech Connect (OSTI)

We present HST/WFPC2 observations across the disk of the nearby isolated dwarf S0 galaxy NGC 404, which hosts an extended gas disk. The locations of our fields contain a roughly equal mixture of bulge and disk stars. All of our resolved stellar photometry reaches m {sub F814W} = 26 (M {sub F814W} = -1.4), which covers 2.5 mag of the red giant branch and main-sequence stars with ages <300 Myr. Our deepest field reaches m {sub F814W} = 27.2 (M {sub F814W} = -0.2), sufficient to resolve the red clump and main-sequence stars with ages <500 Myr. Although we detect trace amounts of star formation at times more recent than 10 Gyr ago for all fields, the proportion of red giant stars to asymptotic giants and main-sequence stars suggests that the disk is dominated by an ancient (>10 Gyr) population. Detailed modeling of the color-magnitude diagram suggests that {approx}70% of the stellar mass in the NGC 404 disk formed by z {approx} 2 (10 Gyr ago) and at least {approx}90% formed prior to z {approx} 1 (8 Gyr ago). These results indicate that the stellar populations of the NGC 404 disk are on average significantly older than those of other nearby disk galaxies, suggesting that early- and late-type disks may have different long-term evolutionary histories, not simply differences in their recent star formation rates. Comparisons of the spatial distribution of the young stellar mass and FUV emission in Galaxy Evolution Explorer images show that the brightest FUV regions contain the youngest stars, but that some young stars (<160 Myr) lie outside of these regions. FUV luminosity appears to be strongly affected by both age and stellar mass within individual regions. Finally, we use our measurements to infer the relationship between the star formation rate and the gas density of the disk at previous epochs. We find that most of the history of the NGC 404 disk is consistent with star formation that has decreased with the gas density according to the Schmidt law. However, {approx} 0.5-1 Gyr ago, the star formation rate was unusually low for the inferred gas density, consistent with the possibility that there was a gas accretion event that reignited star formation {approx}0.5 Gyr ago. Such an event could explain why this S0 galaxy hosts an extended gas disk.

Williams, Benjamin F.; Dalcanton, Julianne J.; Gilbert, Karoline M.; Stilp, Adrienne [Department of Astronomy, Box 351580, University of Washington, Seattle, WA 98195 (United States); Dolphin, Andrew [Raytheon, 1151 E. Hermans Road, Tucson, AZ 85706 (United States); Seth, Anil C. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Weisz, Daniel; Skillman, Evan, E-mail: ben@astro.washington.ed, E-mail: jd@astro.washington.ed, E-mail: stephanie@astro.washington.ed, E-mail: roskar@astro.washington.ed, E-mail: dolphin@raytheon.co, E-mail: aseth@cfa.harvard.ed, E-mail: dweisz@astro.umn.ed, E-mail: skillman@astro.umn.ed [Department of Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, MN 55455 (United States)

2010-06-10T23:59:59.000Z

399

Ionisation in atmospheres of brown dwarfs and extrasolar planets VI: Properties of large-scale discharge events  

E-Print Network [OSTI]

Mineral clouds in substellar atmospheres play a special role as a catalyst for a variety of charge processes. If clouds are charged, the surrounding environment becomes electrically activated, and ensembles of charged grains are electrically discharging (e.g. by lightning), which significantly infuences the local chemistry creating conditions similar to those thought responsible for life in early planetary atmospheres. We note that such lightning discharges contribute also to the ionisation state of the atmosphere. We apply scaling laws for electrical discharge processes from laboratory measurements and numerical experiments to Drift-Phoenix model atmosphere results to model the discharge's propagation downwards (as lightning) and upwards (as sprites) through the atmospheric clouds. We evaluate the spatial extent and energetics of lightning discharges. The atmospheric volume affected (e.g. by increase of temperature or electron number) is larger in a brown dwarf atmosphere ($10^8 -~10^{10}$m$^3$) than in a gi...

Bailey, R L; Hodos, G; Bilger, C; Stark, C R

2013-01-01T23:59:59.000Z

400

C. Freksa et al. (Eds.): Spatial Cognition VI, LNAI 5248, pp. 171187, 2008. Springer-Verlag Berlin Heidelberg 2008  

E-Print Network [OSTI]

in mental rotation (2D figure rotation), spatial visualization (paper folding), and spatial perception range of disciplines as diverse as epidemiology, geology, geography, and ecology; they are used

Kastens, Kim Anne

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


401

Module VI: 2/22/10 -4/2/10 Course 142:216: Chromatin structure and Disease  

E-Print Network [OSTI]

:20 AM 1117 MERF Course Description: This course will cover the role of chromatin structure and nuclear/12 F Nuclear organization and gene regulation 1117 MERF LW SPRING BREAK 3/22 M Epigenetics e-mail address (firstname-lastname@uiowa.edu). Privacy considerations, such as federal law, may

402

PII S0016-7037(00)00398-7 Characterization of U(VI)-carbonato ternary complexes on hematite: EXAFS and  

E-Print Network [OSTI]

and aquifer contaminant of con- cern at nuclear waste management facilities, uranium mining and milling sites and aquifers (0.01 to 10 M dissolved uranium concentrations, in equilibrium with air, pH 4.5 to 8.5). Both of pH values. Copyright © 2000 Elsevier Science Ltd 1. INTRODUCTION Uranium is a common soil

Lenhart, John J.

403

MONTE CARLO SIMULATIONS OF GLOBULAR CLUSTER EVOLUTION. VI. THE INFLUENCE OF AN INTERMEDIATE-MASS BLACK HOLE  

SciTech Connect (OSTI)

We present results from a series of Monte Carlo (MC) simulations investigating the imprint of a central intermediate-mass black hole (IMBH) on the structure of a globular cluster. We investigate the three-dimensional and projected density profiles, and stellar disruption rates for idealized as well as realistic cluster models, taking into account a stellar mass spectrum and stellar evolution, and allowing for a larger, more realistic number of stars than was previously possible with direct N-body methods. We compare our results to other N-body and Fokker-Planck simulations published previously. We find, in general, very good agreement for the overall cluster structure and dynamical evolution between direct N-body simulations and our MC simulations. Significant differences exist in the number of stars that are tidally disrupted by the IMBH, and this is most likely caused by the wandering motion of the IMBH, not included in the MC scheme. These differences, however, are negligible for the final IMBH masses in realistic cluster models, as the disruption rates are generally much lower than for single-mass clusters. As a direct comparison to observations we construct a detailed model for the cluster NGC 5694, which is known to possess a central surface brightness cusp consistent with the presence of an IMBH. We find that not only the inner slope but also the outer part of the surface brightness profile agree well with observations. However, there is only a slight preference for models harboring an IMBH compared to models without.

Umbreit, Stefan; Rasio, Frederic A. [Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Rd., Evanston, IL 60208 (United States); Fregeau, John M. [Kavli Institute of Theoretical Physics, University of California, Santa Barbara, CA 93106 (United States); Chatterjee, Sourav, E-mail: s-umbreit@northwestern.edu [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL (United States)

2012-05-01T23:59:59.000Z

404

STRUCTURE OF PENTAKIS (UREA) DIOXOURANIUM(VI)NITRATE LUO2 (OC (NH2)2)5 (NO3) 2  

E-Print Network [OSTI]

an aqueous solution of uranyl nitrate and urea which wasALL f(O,O.t» URANYL UREA NITRATE FOB AND FCA ARE THEFACTORS CO~TINUE& FOf URANYL UREA NITRATE l F[) B PAGE . ,

Zalkin, Allan

2011-01-01T23:59:59.000Z

405

STRUCTURE OF PENTAKIS (UREA) DIOXOURANIUM(VI)NITRATE LUO2 (OC (NH2)2)5 (NO3) 2  

E-Print Network [OSTI]

Chemistry University of California Berkeley, California 94720 AUGUST 1978 In our ongoing studies of uranium

Zalkin, Allan

2011-01-01T23:59:59.000Z

406

III International Conference of CABERNET 2012, Managing Urban Land VI International Conference Innovative Solutions for Revitalization of Degraded Areas  

E-Print Network [OSTI]

), Environmental and contaminated land engineers 3, avenue Claude Guillemin, BP36009, 45060 Orléans Cedex 2 for sustainable reuse of excavated soils which would ensure human health and environmental protection. One (professional unions, environmental protection association, planners, lawyers, etc.). The tools are now freely

Boyer, Edmond

407

Thermodynamics of the Complexation of Uranium(VI) by oxalate in aqueous solution at 10-70oC  

E-Print Network [OSTI]

cell was introduced in the measuring compartment of a Varian Cary-5G spectrophotometer equipped with a Peltier

Di Bernardo, Plinio

2009-01-01T23:59:59.000Z

408

Identification of simultaneous U(VI) sorption complexes and U(IV) nanoprecipitates on the magnetite (111) surface  

E-Print Network [OSTI]

Neptunium, Plutonium, Americium and Technetium. Elsevier:Neptunium, Plutonium, Americium and Technetium. Elsevier:

Singer, D.M.

2013-01-01T23:59:59.000Z

409

Upscaling of Long-Term U9VI) Desorption from Pore Scale Kinetics to Field-Scale Reactive Transport Models  

SciTech Connect (OSTI)

Environmental systems exhibit a range of complexities which exist at a range of length and mass scales. Within the realm of radionuclide fate and transport, much work has been focused on understanding pore scale processes where complexity can be reduced to a simplified system. In describing larger scale behavior, the results from these simplified systems must be combined to create a theory of the whole. This process can be quite complex, and lead to models which lack transparency. The underlying assumption of this approach is that complex systems will exhibit complex behavior, requiring a complex system of equations to describe behavior. This assumption has never been tested. The goal of the experiments presented is to ask the question: Do increasingly complex systems show increasingly complex behavior? Three experimental tanks at the intermediate scale (Tank 1: 2.4m x 1.2m x 7.6cm, Tank 2: 2.4m x 0.61m x 7.6cm, Tank 3: 2.4m x 0.61m x 0.61m (LxHxW)) have been completed. These tanks were packed with various physical orientations of different particle sizes of a uranium contaminated sediment from a former uranium mill near Naturita, Colorado. Steady state water flow was induced across the tanks using constant head boundaries. Pore water was removed from within the flow domain through sampling ports/wells; effluent samples were also taken. Each sample was analyzed for a variety of analytes relating to the solubility and transport of uranium. Flow fields were characterized using inert tracers and direct measurements of pressure head. The results show that although there is a wide range of chemical variability within the flow domain of the tank, the effluent uranium behavior is simple enough to be described using a variety of conceptual models. Thus, although there is a wide range in variability caused by pore scale behaviors, these behaviors appear to be smoothed out as uranium is transported through the tank. This smoothing of uranium transport behavior transcends many of the physical and chemical heterogeneities added to the tank experiments.

Andy Miller

2009-01-25T23:59:59.000Z

410

Hvis det stod til forskerne p Ris, skul-le vi allerede i dag kunne fylde tanken  

E-Print Network [OSTI]

for at forske inden for udvikling af biodiesel, endsige at producere det. Biodiesel er ellers både miljøvenligt ellers benytter. "I andre lande er man langt fremme med udvikling af biodiesel," fortæller Jens Kossmann dag laves der biodiesel af frø fra både raps, hør, palmeolie og sojabønner." Produktionen af biodiesel

411

Laboratoire Kastler Brossel Universite Pierre et Marie Curie Th`ese de doctorat de l'Universite Paris VI  

E-Print Network [OSTI]

'Amplification Param´etrique en Optique Quantique Soutenue le 25 juin 2007 devant le jury compos´e de : M. Daniel BLOCH compression des fluctuations du vide au sein de dispositifs du type Amplificateur Param´etrique Optique (APO'analogie `a l'aide d'un micro-APO monolithique, permettant d'esp´erer un rayonnement largement sup´erieur `a

Paris-Sud XI, Université de

412

vbyCaHbeta CCD Photometry of Clusters. VI. The Metal-Deficient Open Cluster NGC 2420  

E-Print Network [OSTI]

CCD photometry on the intermediate-band vbyCaHbeta system is presented for the metal-deficient open cluster, NGC 2420. Restricting the data to probable single members of the cluster using the CMD and the photometric indices alone generates a sample of 106 stars at the cluster turnoff. The average E(b-y) = 0.03 +/- 0.003 (s.e.m.) or E(B-V) = 0.050 +/- 0.004 (s.e.m.), where the errors refer to internal errors alone. With this reddening, [Fe/H] is derived from both m1 and hk, using b-y and Hbeta as the temperature index. The agreement among the four approaches is reasonable, leading to a final weighted average of [Fe/H] = -0.37 +/- 0.05 (s.e.m.) for the cluster, on a scale where the Hyades has [Fe/H] = +0.12. When combined with the abundances from DDO photometry and from recalibrated low-resolution spectroscopy, the mean metallicity becomes [Fe/H] = -0.32 +/- 0.03. It is also demonstrated that the average cluster abundances based upon either DDO data or low-resolution spectroscopy are consistently reliable to 0....

Anthony-Twarog, B J; Cracraft, M; Twarog, B A; Anthony-Twarog, Barbara J.; Tanner, Delora; Cracraft, Misty; Twarog, Bruce A.

2005-01-01T23:59:59.000Z

413

178 VI. CLASSICAL PROBABILITY AND ITS RENAISSANCE 11. M. Tribus, Rational Descriptions, Decisions and Designs, p. 130. Oxford: Pergamon,  

E-Print Network [OSTI]

. However, the classical theory lacked guidelines for the identifica- tion of a balance of evidence gives us few guidelines for the actual determination of logical probability. Finally, we consider Carnap, quantitative logical relation, called degree of confirmation (d.c.), to measure the support one statement lends

Fitelson, Branden

414

UDC 519.856 V.I. NORKIN , A.I. KIBZUN and A.V. NAUMOV ...  

E-Print Network [OSTI]

joint Russian-Ukrainian project ?40.1/016 (2011-2012), the work of A.I. Kibzun and A.V. Naumov was supported in part by Russian Fund of Fundamental ...

PAPA

2013-04-19T23:59:59.000Z

415

FATE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE .  

E-Print Network [OSTI]

??Physical and chemical heterogeneities are inherent in subsurface environments due to varying: mineralogy, pore geometry, solution saturation, and solute concentration. The goals of this research… (more)

[No author

2012-01-01T23:59:59.000Z

416

In situ long-term reductive bioimmobilization of Cr(VI) in groundwater using hydrogen release compound  

E-Print Network [OSTI]

100 H Area of the DOE Hanford Facility, Quantum EngineeringCr-immobilization research site at Hanford 100-H area. Wellexperiment was conducted at the Hanford Site (Washington), a

Faybishenko, B.

2009-01-01T23:59:59.000Z

417

Structure and Hydrolysis of the U(IV), U(V), and U(VI) Aqua Ions from Ab  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSiteNeutronStrategicOur Mission OuraStructureCO2 onEMSLInitio

418

Adsorption of Fe(II) and U(VI) to carboxyl-functionalized microspheres: The influence of speciation on uranyl  

E-Print Network [OSTI]

, Argonne, IL 60439, USA b Department of Civil Engineering and Geological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA c Department of Geology and Geophysics, University of Wisconsin for immobilization of uranium in subsurface environments. Although the presence of surfaces has been shown

Roden, Eric E.

419

VI-19.00(A) UNIVERSITY OF MARYLAND POLICY ON PROTECTIVE EQUIPMENT PROGRAM APPROVED BY THE PRESIDENT, January 19, 1999  

E-Print Network [OSTI]

could result in injury or illness. Personal Protective Equipment (PPE): Devices worn by the employees, January 19, 1999 I. POLICY STATEMENT A. Purpose The Personal Protective Equipment (PPE) Program has been OSHA Regulation 29 CFR Part 1910 Subpart I - Personal Protective Equipment. D. Department

Rubloff, Gary W.

420

Dynamical Systems with Delays Benefits and detriments  

E-Print Network [OSTI]

-A2 Heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 VI-A3 in Liquid Propellant Motor . . . . . . . . . . . . . . . . . . . . . . . 29 VI-A5 Remote control

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


421

04/09/13 The US-Italy Physics Program at Laboratori Nazionali del Gran Sasso (LNGS) (15 October 2013) https://agenda.infn.it/conferenceOtherViews.py?fr=no&showSession=all&detailLevel=contribution&confId=6760&view=standard&showDate=all 1/1  

E-Print Network [OSTI]

' Speaker: Giovanni De Lellis (Università degli Studi di Napoli "Federico II") 16:20 Neutrinoless Double Beta Decay16:40 18:00 NEXT 20' Speaker: J. J. Gomez cadenac (Instituto de Fisica Corpuscolar valencia

422

Experimental and theoretical high energy physics research. [UCLA  

SciTech Connect (OSTI)

Progress in the various components of the UCLA High-Energy Physics Research program is summarized, including some representative figures and lists of resulting presentations and published papers. Principal efforts were directed at the following: (I) UCLA hadronization model, PEP4/9 e{sup +}e{sup {minus}} analysis, {bar P} decay; (II) ICARUS and astroparticle physics (physics goals, technical progress on electronics, data acquisition, and detector performance, long baseline neutrino beam from CERN to the Gran Sasso and ICARUS, future ICARUS program, and WIMP experiment with xenon), B physics with hadron beams and colliders, high-energy collider physics, and the {phi} factory project; (III) theoretical high-energy physics; (IV) H dibaryon search, search for K{sub L}{sup 0} {yields} {pi}{sup 0}{gamma}{gamma} and {pi}{sup 0}{nu}{bar {nu}}, and detector design and construction for the FNAL-KTeV project; (V) UCLA participation in the experiment CDF at Fermilab; and (VI) VLPC/scintillating fiber R D.

Not Available

1992-01-01T23:59:59.000Z

423

Experimental and theoretical high energy physics research. Annual progress report, September 1, 1991--September 31, 1992  

SciTech Connect (OSTI)

Progress in the various components of the UCLA High-Energy Physics Research program is summarized, including some representative figures and lists of resulting presentations and published papers. Principal efforts were directed at the following: (I) UCLA hadronization model, PEP4/9 e{sup +}e{sup {minus}} analysis, {bar P} decay; (II) ICARUS and astroparticle physics (physics goals, technical progress on electronics, data acquisition, and detector performance, long baseline neutrino beam from CERN to the Gran Sasso and ICARUS, future ICARUS program, and WIMP experiment with xenon), B physics with hadron beams and colliders, high-energy collider physics, and the {phi} factory project; (III) theoretical high-energy physics; (IV) H dibaryon search, search for K{sub L}{sup 0} {yields} {pi}{sup 0}{gamma}{gamma} and {pi}{sup 0}{nu}{bar {nu}}, and detector design and construction for the FNAL-KTeV project; (V) UCLA participation in the experiment CDF at Fermilab; and (VI) VLPC/scintillating fiber R & D.

Not Available

1992-10-01T23:59:59.000Z

424

A review of "The Making of the Jacobean Regime: James VI and I and the Government of England, 1603-1605." by Diana Newton  

E-Print Network [OSTI]

. Frances Harris and Michael Hunter, eds. John Evelyn and His Milieu. London: The British Library, 2003. ix + 298 pp. + 62 illus. $70.00. Review by CHRISTOPHER BAKER, ARMSTRONG ATLANTIC STATE UNIVERSITY. Of the two great seventeenth-century English...

Charles W. A. Prior

2005-01-01T23:59:59.000Z

425

communiqu DE PRESSE -2 avRil 2013 viGiE-naTuRE : lancEmEnT DE la SaiSon 2013  

E-Print Network [OSTI]

observation compte ! Télécharger le dossier de presse sur : www.vigienature.fr les nouveauX résultats scienti sein de l'association Tela Botanica, Vincent Devictor, chercheur au CNRS, Anthony Virondeau, Pascal

426

Tracking the Sun VI: An Historical Summary of the Installed Price of Photovoltaics in the United States from 1998 to 2012  

E-Print Network [OSTI]

sources, including the Section 1603 Grant Program, FERC Formestimated based on reported Section 1603 grant amounts, bypaid to the installer. Section 1603 grant data was used to

Barbose, Galen

2014-01-01T23:59:59.000Z

427

)": t-Il )\\JA\\A-~' i{~ j30 )-1b1)". \\1 1VI-J\\J'-Y ~ (.3'-1  

E-Print Network [OSTI]

. ,j(;1 3 Ill!. I ~ mi. 1';- Ill!. #12;T· 55 11V" 5l.i!s"" \\-\\1JD : 10 Iv..,'" $"4/5 1 ~HV17: L!1 Mf. ~S mi. Vis. mi. Vis. 2.[mi. #12;T_y:) J . "I....,'.~ ()A,.H{)(). '"6l t'\\MI Y; .., ~ I 35'/ ?> b loo (J ~(I).'). 0 f f'{lv~: o· 10"\\ l pC/V;,' 0.6" #12

Thompson, Anne

428

Paraho environmental data. Part IV. Land reclamation and revegetation. Part V. Biological effects. Part VI. Occupational health and safety. Part VII. End use  

SciTech Connect (OSTI)

Characteristics of the environment and ecosystems at Anvil Points, reclamation of retorted shale, revegetation of retorted shale, and ecological effects of retorted shale are reported in the first section of this report. Methods used in screening shale oil and retort water for mutagens and carcinogens as well as toxicity studies are reported in the second section of this report. The third section contains information concerning the industrial hygiene and medical studies made at Anvil Points during Paraho research operations. The last section discusses the end uses of shale crude oil and possible health effects associated with end use. (DMC)

Limbach, L.K.

1982-06-01T23:59:59.000Z

429

The HARPS search for southern extra-solar planets. VI. A Neptune-mass planet around the nearby M dwarf Gl 581  

E-Print Network [OSTI]

We report the discovery of a Neptune-mass planet around Gl 581 (M3V, M = 0.31 Msol), based on precise Doppler measurements with the HARPS spectrograph at La Silla Observatory. The radial velocities reveal a circular orbit of period P = 5.366 days and semi-amplitude K1 = 13.2 m/s. The resulting minimum mass of the planet (m2 sin i) is only 0.052 Mjup = 0.97 Mnep = 16.6 Mearth making Gl 581b one of the lightest extra-solar planet known to date. The Gl 581 planetary system is only the third centered on an M dwarf, joining the Gl 876 three-planet system and the lone planet around Gl 436. Its discovery reinforces the emerging tendency of such planets to be of low mass, and found at short orbital periods. The statistical properties of the planets orbiting M dwarfs do not seem to match a simple mass scaling of their counterparts around solar-type stars.

X. Bonfils; T. Forveille; X. Delfosse; S. Udry; M. Mayor; C. Perrier; F. Bouchy; F. Pepe; D. Queloz; J. -L. Bertaux

2005-09-08T23:59:59.000Z

430

FT-IR study of third phase formation in the U(VI) or Th(IV)HNO{sub 3}, TBP/alkane systems.  

SciTech Connect (OSTI)

The infrared reflectance spectra of the third phases formed in the systems UO{sub 2}(NO{sub 3}){sub 2}/HNO{sub 3}/20%TBP in n-dodecane and Th(NO{sub 3}){sub 4}/HNO{sub 3}/20%TBP in n-octane gave evidence for the presence in solution of a significant amount of weakly bonded molecular nitric acid. From the correlation between the ratio of the areas of the bands at 1672 cm-1 and 1648 cm-1, characteristic of weakly intermolecularly hydrogen-bonded nitric acid and nitric acid strongly bonded to TBP, respectively, the molecular HNO{sub 3} concentration was determined. The presence of these two bands in the spectra of the third phase samples provides evidence that only part of the HNO{sub 3} is directly and strongly bound to the TBP phosphoryl group. The ratio of the weakly intermolecularly hydrogen-bonded HNO3 to that bound directly to P=O group of TBP was much higher for the uranium than for the thorium third phases formed under comparable conditions. The estimated amounts of the weakly intermolecularly hydrogen-bonded HNO{sub 3} were about 47% and 30% of the total HNO{sub 3} present in the uranium and thorium systems, respectively. In the uranium third phase, the TBP hemisolvate of HNO{sub 3} (TBP{dot c}2HNO{sub 3}) was recognized as the predominant species with accompanying very small amount of monosolvate (TBP{dot c}HNO{sub 3}). In the thorium system the hemisolvate of HNO{sub 3} was also present, but the monosolvate was found to be the major species. When the thorium concentration in the third phase was increased, a conversion of monosolvate into hemisolvate was observed. Analysis of the infrared spectra for both systems indicated that the nitrate anions form bidentate chelates with the studied metals.

Borkowski, M.; Ferraro, J. R.; Chiarizia, R.; McAlister, D. R.; Chemistry; Loyola Univ.

2002-01-01T23:59:59.000Z

431

BULLETIN OF THE UNITED STATES FISH COMMISSION. 433 VOP.VI,NO.2% Washing&on,IP. C. Mai-. 24, IS$$.  

E-Print Network [OSTI]

,thatthe competition for their services is of such a character aa to secure for them fair treatment. All, and by the decrease in infanticide and other savage practice8 to which they wera ormerIy addicted. Nethods of $shing'clock in the afternoon. The pearl-oysters lie on the ground, with the shells partly open, and great care is required in

432

THE ACS LCID PROJECT. VI. THE STAR FORMATION HISTORY OF THE TUCANA dSph AND THE RELATIVE AGES OF THE ISOLATED dSph GALAXIES  

SciTech Connect (OSTI)

We present a detailed study of the star formation history (SFH) of the Tucana dwarf spheroidal galaxy. High-quality, deep HST/ACS data, collected in the framework of the LCID project, allowed us to obtain the deepest color-magnitude diagram to date, reaching the old main-sequence turnoff (F814 {approx} 29) with good photometric accuracy. Our analysis, based on three different SFH codes, shows that Tucana is an old and metal-poor stellar system, which experienced a strong initial burst of star formation at a very early epoch ({approx_equal}13 Gyr ago) which lasted a maximum of 1 Gyr (sigma value). We are not able to unambiguously answer the question of whether most star formation in Tucana occurred before or after the end of the reionization era, and we analyze alternative scenarios that may explain the transformation of Tucana from a gas-rich galaxy into a dSph. Current measurements of its radial velocity do not preclude that Tucana may have crossed the inner regions of the Local Group (LG) once, and so gas stripping by ram pressure and tides due to a close interaction cannot be ruled out. A single pericenter passage would generate insufficient tidal heating to turn an originally disky dwarf into a true dSph; however, this possibility would be consistent with the observed residual rotation in Tucana. On the other hand, the high star formation rate measured at early times may have injected enough energy into the interstellar medium to blow out a significant fraction of the initial gas content. Gas that is heated but not blown out would also be more easily stripped via ram pressure. We compare the SFH inferred for Tucana with that of Cetus, the other isolated LG dSph galaxy in the LCID sample. We show that the formation time of the bulk of star formation in Cetus is clearly delayed with respect to that of Tucana. This reinforces the conclusion of Monelli et al. that Cetus formed the vast majority of its stars after the end of the reionization era implying, therefore, that small dwarf galaxies are not necessarily strongly affected by reionization, in agreement with many state-of-the-art cosmological models.

Monelli, M.; Gallart, C.; Hidalgo, S. L.; Aparicio, A.; Drozdovsky, I., E-mail: monelli@iac.e [Instituto de Astrofisica de Canarias, La Laguna, Tenerife (Spain)

2010-10-20T23:59:59.000Z

433

Tracking the Sun VI: An Historical Summary of the Installed Price of Photovoltaics in the United States from 1998 to 2012  

E-Print Network [OSTI]

Saver Program IOU (AEP, Entergy, Oncor, SWEPCO, TNMP) -Saver Program IOU (AEP, Entergy, Oncor, SWEPCO, TNMP) -

Barbose, Galen

2014-01-01T23:59:59.000Z

434

Stability of U(VI)- and Tc(VII) reducing microbial communities to environmental perturbation: a thermodynamic network model and intermediate-scale experiments  

SciTech Connect (OSTI)

The project is a collaborative task with a larger project headed by Jack Istok at Oregon State University, which is conducted under the same title. The project was conceptualized as follows. A ''geochemical'' model of microbial communities was hypothesized, in which microbes were characterized as mineral species according to the chemical transformations they used for metabolic function. The iron-reducing bacteria, for example, would be represented by the iron reducing chemical reaction, including a specific electron donor, the fraction of the consumed donor used for biomass maintenance or growth, and a free energy for the reaction. The pseudomineral species would then be included in a standard geochemical model, and community succession could be calculated according to the thermodynamically favored microbially mediated reactions under progressive consumption of electron donors and receptors, and evolving geochemical conditions. The project includes relatively minor participation by the University of Oklahoma and Pacific Northwest National Laboratory, with the major component at OSU. The PNNL project was funded to provide assistance to Dr. Istok in formulating the appropriate modeling approach and geochemical constraints on the modeling effort.

McKinley, James P.; Liu, Chongxuan; Istok, Jack; Krumholz, Lee

2006-06-01T23:59:59.000Z

435

Measurement of chromium VI and chromium III in stainless steel welding fumes with electron spectroscopy for chemical analysis and neutron activation analysis  

E-Print Network [OSTI]

Measurement of Chromium YI and Chromium III in Stainless Steel Welding Fumes with Electron Spectroscopy for Chemical Analysis and Neutron Activation Analysis (December 1977) Gerald Myron Lautner; B. S. , Louisiana State University; Co-Chairmen of Advisory... steel plates sized 15. 2 by 26. 7 by 0. 64 centimeters (6. 0 by 10. 5 by 0. 25 inches). The manufacturer lists the following typical analysis for Type 304 stainless plate; C ? 0. 08 percent; Mn - 2. 00 percent; Si - 1 00 percent; Cr = 18. 00 - 20. 00...

Lautner, Gerald Myron

1977-01-01T23:59:59.000Z

436

Development of Surface Complexation Models of Cr(VI) Adsorption on Soils, Sediments and Model Mixtures of Kaolinite, Montmorillonite, ?-Alumina, Hydrous Manganese and Ferric Oxides and Goethite  

SciTech Connect (OSTI)

Hexavalent chromium is a highly toxic contaminant that has been introduced into aquifers and shallow sediments and soils via many anthropogenic activities. Hexavalent chromium contamination is a problem or potential problem in the shallow subsurface at several DOE sites, including Hanford, Idaho National Laboratory, Los Alamos National Laboratory and the Oak Ridge Reservation (DOE, 2008). To accurately quantify the fate and transport of hexavalent chromium at DOE and other contaminated sites, robust geochemical models, capable of correctly predicting changes in chromium chemical form resulting from chemical reactions occurring in subsurface environments are needed. One important chemical reaction that may greatly impact the bioavailability and mobility of hexavalent chromium in the subsurface is chemical binding to the surfaces of particulates, termed adsorption or surface complexation. Quantitative thermodynamic surface complexation models have been derived that can correctly calculate hexavalent chromium adsorption on well-characterized materials over ranges in subsurface conditions, such pH and salinity. However, models have not yet been developed for hexavalent chromium adsorption on many important constituents of natural soils and sediments, such as clay minerals. Furthermore, most of the existing thermodynamic models have been developed for relatively simple, single solid systems and have rarely been tested for the complex mixtures of solids present in real sediments and soils. In this study, the adsorption of hexavalent chromium was measured as a function of pH (3-10), salinity (0.001 to 0.1 M NaNO3), and partial pressure of carbon dioxide(0-5%) on a suite of naturally-occurring solids including goethite (FeOOH), hydrous manganese oxide (MnOOH), hydrous ferric oxide (Fe(OH)3), ?-alumina (Al2O3), kaolinite (Al2Si2O5(OH)4), and montmorillonite (Na3(Al, Mg)2Si4O10(OH)2?nH2O). The results show that all of these materials can bind substantial quantities of hexavalent chromium, especially at low pH. Unexpectedly, experiments with the clay minerals kaolinite and montmorillonite suggest that hexavalent chromium may interact with these solids over much longer periods of time than expected. Furthermore, hexavalent chromium may irreversibly bind to these solids, perhaps because of oxidation-reduction reactions occurring on the surfaces of the clay minerals. More work should be done to investigate and quantify these chemical reactions. Experiments conducted with mixtures of goethite, hydrous manganese oxide, hydrous ferric oxide, ?-alumina, montmorillonite and kaolinite demonstrate that it is possible to correctly predict hexavalent chromium binding in the presence of multiple minerals using thermodynamic models derived for the simpler systems. Further, these models suggest that of the six solid considered in this study, goethite is typically the solid to which most of the hexavalent chromium will bind. Experiments completed with organic-rich and organic-poor natural sediments demonstrate that in organic-rich substrates, organic matter is likely to control uptake of the hexavalent chromium. The models derived and tested in this study for hexavalent chromium binding to ?-alumina, hydrous manganese oxide, goethite, hydrous ferric oxide and clay minerals can be used to better predict changes in hexavalent chromium bioavailability and mobility in contaminated sediments and soils.

Koretsky, Carla [Western Michigan University] [Western Michigan University

2013-11-29T23:59:59.000Z

437

Leakage diagnostics, sealant longevity, sizing and technologytransfer in residential thermal distribution systems: Part II.Residential thermal Distribution Systesm, Phase VI FinalReport  

SciTech Connect (OSTI)

This report builds on and extends our previous efforts as described in "Leakage Diagnostics, Sealant Longevity, Sizing and Technology Transfer in Residential Thermal Distribution Systems- CIEE Residential Thermal Distribution Systems Phase V Final Report, October 1997". New developments include defining combined duct and equipment efficiencies in a concept called "Tons At the Register" and on performance issues related to field use of the aerosol sealant technology. Some of the key results discussed in this report include: o Register, boot and air handler cabinet leakage can often represent a significant fraction of the total duct leakage in new construction. Because of the large range of pressures in duct systems an accurate characterization may require separating these components through improved leakage testing. o Conventional duct tape failed our accelerated longevity testing and is not, therefore, considered generally acceptable for use in sealing duct systems. Many other tapes and sealing approaches are available and practical and have passed our longevity tests. o Simulations of summer temperature pull-down time have shown that duct system improvements can be combined with equipment downsizing to save first cost, energy consumption, and peak power and still provide equivalent or superior comfort. o Air conditioner name plate capacity ratings alone are a poor indicator of how much cooling will actually be delivered to the conditioned space. Duct system efficiency can have as large an impact on performance as variations in SEER. o Mechanical duct cleaning techniques do not have an adverse impact on the ducts sealed with the Aerosol sealant. The material typically used in Aerosol sealing techniques does not appear to present a health or safety hazard. Results from this study were used by the California Energy Commission in the formation of the current Energy Efficiency Standards for Low-Rise Residential Buildings (CEC, (1998)), often referred to as Title 24. Current information on ducts and thermal distribution research can be found at http://ducts.lbl.gov

Buchanan, C.; Modera, M.; Sherman, M.; Siegel, J.; Walker, I.; Wang, D.

1998-12-01T23:59:59.000Z

438

The extended ROSAT-ESO Flux-Limited X-ray Galaxy Cluster Survey (REFLEX II) VI. Effect of massive neutrinos on the cosmological constraints from clusters  

E-Print Network [OSTI]

Clusters of galaxies are important probes for the large-scale structure that allow us to test cosmological models. With the REFLEX II galaxy cluster survey we previously derived tight constraints on the cosmological parameters for the matter density, Omega_m, and the amplitude parameter of the matter density fluctuations, sigma_8. Whereas in these previous studies no effect of massive neutrinos was taken into account, we explore these effects in the present publication. We derive cosmological constraints for the sum of the neutrino masses of the conventional three neutrino families in the range 0 to 0.6 eV. The influence on the constraints of Omega_m and sigma_8 for the expected mass range is weak. Interesting constraints on the neutrino properties can be derived by comparing the cluster data with those from the Planck cosmic microwave background observations. The current tension between the Planck results and clusters can formally be resolved with neutrino masses of about M_nu = 0.45 (+- 0.28, 1-sigma) eV. W...

Boehringer, Hans

2015-01-01T23:59:59.000Z

439

JOURNAL OF LATEX CLASS FILES, VOL. 6, NO. 1, JANUARY 2007 1 ViDE: A Vision-based Approach for Deep Web  

E-Print Network [OSTI]

Web Data Extraction Wei Liu, Xiaofeng Meng, Member, IEEE, and Weiyi Meng, Member, IEEE Abstract--Deep web contents are accessed by queries submitted to web databases and the returned data records are enwrapped in dynamically generated web pages (they will be called deep web pages in this paper). Extracting

440

INTOR critical issue D: maintainability. Tritium containment and personnel access vs remote maintenance, Chapter VI of the US INTOR report for Phase Two A, Part 2  

SciTech Connect (OSTI)

The purpose of this study is to compare the benefits and costs associated with personnel access mmaintenance procedures compared to those of all-remote maintenance procedures. The INTOR Phase Two A, Part I configuration was used to make this comparison. For both approaches, capital and operating costs were considered to first order, maintenance equipment requirements were investigated, maintenance requirements common to both approaches and unique to each were identified, tritium handling requirements were outlined, and maintenance scenarios and device downtime were developed for both. In addition, estimates of person-rem exposure were made for the personnel access approach.

Spampinato, P.T.; Finn, P.A.; Gohar, Y.; Yang, S.T.; Stasko, R.R.; Morrison, C.; Russell, S.; Shaw, G.; Bussell, G.T.; Watts, R.

1984-01-01T23:59:59.000Z

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


441

Cri$cal FNS Ac$vi$es Required Over the Next Decade to Establish the Scien$fic Basis for a FNSF  

E-Print Network [OSTI]

[orm in the complete fusion environment ITER FNSF DEMO First Commercial Power Plant flow/corrosion/thermal/hydrogen facility(s) Tri$um (hydrogen) extrac/HHF/plasma loading simulator PFC facil$y(s) Hea$ng/current drive, diagnos$c, plasma fueling

442

RETIRED A STARS AND THEIR COMPANIONS. VI. A PAIR OF INTERACTING EXOPLANET PAIRS AROUND THE SUBGIANTS 24 SEXTANIS AND HD 200964  

SciTech Connect (OSTI)

We report radial velocity (RV) measurements of the G-type subgiants 24 Sextanis (= HD 90043) and HD 200964. Both are massive, evolved stars that exhibit periodic variations due to the presence of a pair of Jovian planets. Photometric monitoring with the T12 0.80 m APT at Fairborn Observatory demonstrates both stars to be constant in brightness to {<=}0.002 mag, thus strengthening the planetary interpretation of the RV variations. Based on our dynamical analysis of the RV time series, 24 Sex b, c have orbital periods of 452.8 days and 883.0 days, corresponding to semimajor axes 1.333 AU and 2.08 AU, and minimum masses 1.99 M{sub Jup} and 0.86 M{sub Jup}, assuming a stellar mass M{sub *}= 1.54 M{sub sun}. HD 200964 b, c have orbital periods of 613.8 days and 825.0 days, corresponding to semimajor axes 1.601 AU and 1.95 AU, and minimum masses 1.99 M{sub Jup} and 0.90 M{sub Jup}, assuming M{sub *}= 1.44 M{sub sun}. We also carry out dynamical simulations to properly account for gravitational interactions between the planets. Most, if not all, of the dynamically stable solutions include crossing orbits, suggesting that each system is locked in a mean-motion resonance that prevents close encounters and provides long-term stability. The planets in the 24 Sex system likely have a period ratio near 2:1, while the HD 200964 system is even more tightly packed with a period ratio close to 4:3. However, we caution that further RV observations and more detailed dynamical modeling will be required to provide definitive and unique orbital solutions for both cases, and to determine whether the two systems are truly resonant.

Johnson, John Asher [California Institute of Technology, Department of Astrophysics, MC 249-17, Pasadena, CA 91125 (United States); Payne, Matthew; Ford, Eric B. [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, P.O. Box 112055, Gainesville, FL 32611-2055 (United States); Howard, Andrew W.; Marcy, Geoffrey W. [Department of Astronomy, University of California, Mail Code 3411, Berkeley, CA 94720 (United States); Clubb, Kelsey I. [Department of Physics and Astronomy, San Francisco State University, San Francisco, CA 94132 (United States); Bowler, Brendan P. [Institute for Astronomy, University of Hawai'i, Honolulu, HI 96822 (United States); Henry, Gregory W. [Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Boulevard, Box 9501, Nashville, TN 37209 (United States); Fischer, Debra A.; Brewer, John M.; Schwab, Christian [Department of Astronomy, Yale University, New Haven, CT 06511 (United States); Reffert, Sabine [ZAH-Landessternwarte, Koenigstuhl 12, D-69117 Heidelberg (Germany); Lowe, Thomas B., E-mail: johnjohn@astro.caltech.edu [UCO/Lick Observatory, Santa Cruz, CA 95064 (United States)

2011-01-15T23:59:59.000Z

443

Stardust Interstellar Preliminary Examination VI: Quantitative elemental analysis by synchrotron X-ray fluorescence nanoimaging of eight impact features in aerogel  

E-Print Network [OSTI]

-ray fluorescence nanoimaging of eight impact features in aerogel Alexandre S. SIMIONOVICI1* , Laurence LEMELLE2

Nittler, Larry R.

444

Standard test method for uranium by Iron (II) reduction in phosphoric acid followed by chromium (VI) titration in the presence of vanadium  

E-Print Network [OSTI]

1.1 This test method, commonly referred to as the Modified Davies and Gray technique, covers the titration of uranium in product, fuel, and scrap materials after the material is dissolved. The test method is versatile and has been ruggedness tested. With appropriate sample preparation, this test method can give precise and unbiased uranium assays over a wide variety of material types (1, 2). Details of the titration procedure in the presence of plutonium with appropriate modifications are given in Test Method C1204. 1.2 Uranium levels titrated are usually 20 to 50 mg, but up to 200 mg uranium can be titrated using the reagent volumes stated in this test method. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determ...

American Society for Testing and Materials. Philadelphia

2011-01-01T23:59:59.000Z

445

Comments on the paper "The initial conditions of isolated star formation - VI. SCUBA mapping of prestellar cores" (Kirk et al. 2005)  

E-Print Network [OSTI]

In their survey paper of prestellar cores with SCUBA, Kirk et al. (2005) have discarded two of our papers on L183 (Pagani et al. 2003, 2004). However these papers bring two important pieces of information that they cannot ignore. Namely, the real structure of L183 and the very poor correlation between submillimeter and far infrared (FIR) dust emission beyond \\Avb $\\approx$ 15 mag. Making the erroneous assumption that it is the same dust that we are seeing in emission at both 200 and 850 $\\mu$m, they derive constant temperatures which are only approximate, and column densities which are too low. In fact dust temperatures do decrease inside dark clouds and the FIR emission is only tracing the outer parts of the dark clouds (Pagani et al. 2004)

Laurent Pagani; Guilaine Lagache

2005-10-13T23:59:59.000Z

446

Bulk Power System Dynamics and Control -VI, August 22-27, 2004, Cortina d'Ampezzo, Italy Transmission Investment in Competitive Electricity Markets  

E-Print Network [OSTI]

Transmission Investment in Competitive Electricity Markets Javier Contreras George Gross E.T.S. de Ingenieros

Gross, George

447

Tracking the Sun VI: An Historical Summary of the Installed Price of Photovoltaics in the United States from 1998 to 2012  

E-Print Network [OSTI]

Golden, CO: National Renewable Energy Laboratory. NREL/CP-2012. Latham, NY: Interstate Renewable Energy Council, Inc.Golden, CO: National Renewable Energy Laboratory. Goodrich,

Barbose, Galen

2014-01-01T23:59:59.000Z

448

Vehicle Technologies Office Merit Review 2014: Development of Modified PAG (polyalkylene glycol) High VI High Fuel Efficient Lubricant for LDV Applications  

Broader source: Energy.gov [DOE]

Presentation given by Ford Motor Company at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about development of modified...

449

Synthesis, characterization, and exciton dynamics of II-VI semiconducting nanomaterials and ab-initio studies for applications in explosives sensing  

E-Print Network [OSTI]

P. , "Nanowire dye- sensitized solar cells," Nat. Mater. 4(and dye or quantum dot sensitized solar cells. On the

Cooper, Jason Kyle

2013-01-01T23:59:59.000Z

450

LUMINESCENCE SPECTRA OF THE URANYL ION IN TWO GEOMETRICALLY SIMILAR COORDINATION ENVIRONMENTS: URANYL NITRATE HEXAHYDRATE AND DI-u-AQUO-BIS (DIOXODINITRA-TOURANIUM(VI) DI-IMIDAZOLE  

E-Print Network [OSTI]

coordination sphere of uranyl nitrate hexahydrate (UNH). U-Coordination Environments: Uranyl Nitrate Hexahydrate andin the crystal hosts of uranyl nitrate hexahydrate (UNH) and

Brittain, Harry G.

2013-01-01T23:59:59.000Z

451

Unveiling the nature of the unidentified gamma-ray sources VI: gamma-ray blazar candidates in the WISH survey and their radio properties  

E-Print Network [OSTI]

According to the second Fermi LAT Catalog (2FGL), about one third of the gamma-ray sources listed have no assigned counterparts at lower energies. Many statistical methods have been developed to find proper counterparts for these sources. We explore the sky area covered at low radio frequency by Westerbork in the Southern Hemisphere (WISH) survey to search for blazar-like associations among the unidentified gamma-ray sources listed in the 2FGL (UGSs). Searching the WISH and NRAO VLA Sky Survey (NVSS) radio surveys within the positional uncertainty regions of the 2FGL UGSs, we select as gamma-ray blazar candidates the radio sources characterized by flat radio spectra between 352 MHz and 1400 MHz. We propose new gamma-ray blazar associations for eight UGSs and we also discuss their spectral properties at low radio frequencies. We compare the radio flux density distribution of the low radio frequency gamma-ray blazar candidates with that of gamma-ray blazars associated with other methods. We find significant dif...

Nori, M; Massaro, F; D'Abrusco, R; Paggi, A; Tosti, G; Funk, S

2015-01-01T23:59:59.000Z

452

Publicaciones del IGME: serie Hidrogeologa y aguas subterrneas, n 14. VI Simposio del Agua en Andaluca. I: 619-628. 2005  

E-Print Network [OSTI]

Andalucía. I: 619-628. 2005 Primeros datos sobre el inventario y caracterización morfométrica de las lagunas@ujaen.es Palabras clave: Sierra Nevada, lagunas glaciares, inventario, morfometría RESUMEN El Parque Nacional de inventario y caracterización morfométrica de las lagunas, a partir de trabajos de campo y de medidas sobre

Castillo, Antonio

453

Quest for Environmentally-Benign Ligands for Actinide Separations: Thermodynamic, Spectroscopic, and Structural Characterization of U(VI) Complexes with Oxa-Diamide and Related Ligands  

E-Print Network [OSTI]

Zhang P. ; Wang J. ; Rao L. Solv. Extr. Ion Exch. 2005, 23 (Madic, C. ; Testard, F. Solv. Extr. Ion Exch. 2004, 22 (4),Yaita, T.i; Tachimori, S. Solv. Extr. Ion Exch. 2004, 22 (

Tian, Guoxin; Advanced Light Source

2009-01-01T23:59:59.000Z

454

Underground Injection Control Permit Applications for FutureGen 2.0 Morgan County Class VI UIC Wells 1, 2, 3, and 4  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layeredof2014National Nuclear SecuritySalaryand

455

Bulk Power System Dynamics and Control -VI, August 22-27, 2004, Cortina D'Ampezzo, Italy Prediction of Instability Points Using System  

E-Print Network [OSTI]

on actual measured signals such as generator rotor speed, angle or power through the lines. Prony method, develop equivalent linear models of power systems, and tuning controllers using system measurement [12

Cañizares, Claudio A.

456

Tracking the Sun VI: An Historical Summary of the Installed Price of Photovoltaics in the United States from 1998 to 2012  

E-Print Network [OSTI]

Global Market for PV Technologies. Swansea University: PaulaOffice - Renewable Technology Rebate Fund APS - RenewableEnergy (Solar Energy Technologies Office) of the U.S.

Barbose, Galen

2014-01-01T23:59:59.000Z

457

Synergetic effects of II-VI sensitization upon TiO{sub 2} for photoelectrochemical water splitting; a tri-layered structured scheme  

SciTech Connect (OSTI)

World's energy demands are growing on a higher scale increasing the need of more reliable and long term renewable energy resources. Efficient photo-electrochemical (PEC) devices based on novel nano-structured designs for solar-hydrogen generation need to be developed. This study provides an insight of the tri-layered-TiO2 based nanostructures. Observing the mechanism of hydrogen production, the comparison of the structural order during the synthesis is pronounced. The sequence in the tri-layered structure affects the photogenerated electron (e{sup ?}) and hole (h{sup +}) pair transfer and separation. It is also discussed that not only the semiconductors band gaps alignment is important with respect to the water redox potential but also the interfacial regions. Quasi-Fermi-level adjustment at the interfacial regions plays a key role in deciding the solar to hydrogen efficiency. More efficient multicomponent semiconductor nano-design (MCSN) could be developed with the approach given in this study.

Mumtaz, Asad, E-mail: asad-032@yahoo.com [Department of Fundamental and Applied Sciences, University Teknologi PETRONAS (Malaysia); Mohamed, Norani Muti, E-mail: noranimuti-mohamed@petronas.com.my [Centre of Innovative Nanostructures and Nanodevices (COINN), Universiti Teknologi PETRONAS (Malaysia)

2014-10-24T23:59:59.000Z

458

Tracking the Sun VI: An Historical Summary of the Installed Price of Photovoltaics in the United States from 1998 to 2012  

E-Print Network [OSTI]

Solar Electric Rebate Program MO NC NH Columbia Water &Rebates NC NCSEA (project data compiled from NCUC dockets) (d) State NH

Barbose, Galen

2014-01-01T23:59:59.000Z

459

Texas A&M University College of Engineering  

E-Print Network [OSTI]

with any of the EMACS (xemacs, emacs) or VI (vi, vim) families of text editors. There are versions of both is VIM (an implementation of the vi editor, which was developed by Bill Joy for the Unix operating system

Klappenecker, Andreas

460

The Virtuoso's Idiom: Spectacularity and the Seventeenth Century Violin Sonata  

E-Print Network [OSTI]

Op. 5 (1700) Arcangelo Corelli, “Allegro,” Sonata VI, Op.1700) Arcangelo Corelli, “Allegro,” (3 rd Mvt), Sonata VI,Arcangelo Corelli, “Allegro,” (3 rd Mvt), Sonata VI, Op. 5 (

Strand-Polyak, Lindsey Darlene

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ytown gran vi" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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461

E-Print Network 3.0 - adsorption gas chromatography Sample Search...  

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

Ratio on Uranium(VI) Adsorption and Its Summary: Effects of Solid-to-Solution Ratio on Uranium(VI) Adsorption and Its Implications T A O C H E N G... , Wisconsin 53706 U(VI)...

462

E-Print Network 3.0 - adsorptive properties Sample Search Results  

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

Ratio on Uranium(VI) Adsorption and Its Summary: Effects of Solid-to-Solution Ratio on Uranium(VI) Adsorption and Its Implications T A O C H E N G... , Wisconsin 53706 U(VI)...

463

E-Print Network 3.0 - ampliada los contributos Sample Search...  

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

GH &iFHUHV QWRQLR 3ODD &DUORV 5DPRV OIRQVR *DR -RVp XLV *RQiOH Summary: realiza gran nmero de los accesos que la Red recibe diariamente, pero existe el gran...

464

INVESTIGACIN INVESTIGACIN  

E-Print Network [OSTI]

por su fuerte exposición a los riesgos y por una gran vulnerabilidad frente a: sismos, derrumbes investigaciones se centran en los sismos de gran intensidad, la dinámica eruptiva de los volcanes cercanos a las

465

Revue de presse hebdomadaire 07 au 13 fvrier 2011  

E-Print Network [OSTI]

las emisiones. Supplemento Domingo EL KARMAPA El 'Obama Lama' la lía (Por FRANCISCO PEREGIL) : El gran

Rennes, Université de

466

ACTA ARITHMETICA LXXVIII.4 (1997)  

E-Print Network [OSTI]

(Davis and Webb [2], Gran- ville [4]), m = 5 (Hexel and Sachs [5]), m = 8 (Granville 141, Huard, Spearman

Williams, Kenneth Stuart

467

julio-septiembre2006Cinvestav65 Mesoamrica es el centro de origen de muchos  

E-Print Network [OSTI]

gran cantidad de biomasa y es una de las pocas especies vegetales de las que se consumen hojas y granos

468

ANA?LISIS BIOLO?GICO PESQUERO DE LA PESQUERI?A CON RED AGALLERA DE DERIVA EN LA PENI?NSULA DE BAJA CALIFORNIA DURANTE EL PERIODO 1999-2008  

E-Print Network [OSTI]

esta gran cantidad de biomasa representaba un problema parauna alta diversidad y poca biomasa. La tercera masa de agua

Olvera, Miguel A. E.

2009-01-01T23:59:59.000Z

469

VII Congreso Ibrico sobre Gestin y Planificacin del Agua "Ros Ibricos +10. Mirando al futuro tras 10 aos de DMA" 16/19 de febrero de 2011,Talavera de la Reina  

E-Print Network [OSTI]

consti- tuya un recurso clave para muchas regiones, donde ha permitido un gran desarrollo económico

Paris-Sud XI, Université de

470

In situ groundwater bioremediation  

E-Print Network [OSTI]

NO 3 Mn (IV) U (VI) Cr (VI) PCE/TCE Electron Acceptors Fe (for sites that also have PCE/TCE the iron (III) and the

Hazen, Terry C.

2010-01-01T23:59:59.000Z

471

Structure, Kinetics, and Thermodynamics of the Aqueous Uranyl...  

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

Kinetics, and Thermodynamics of the Aqueous Uranyl(VI) Cation. Structure, Kinetics, and Thermodynamics of the Aqueous Uranyl(VI) Cation. Abstract: Molecular simulation techniques...

472

E-Print Network 3.0 - animals newborn Sample Search Results  

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

to Screening Newborns for Mucopolysaccharidosis VI (Maroteaux-Lamy Syndrome) Trisha A. Duffey... ) for the early detection of mucopolysaccharidosis VI (Maroteaux-Lamy syndrome)...

473

BOREHOLE DRILLING AND RELATED ACTIVITIES AT THE STRIPA MINE  

E-Print Network [OSTI]

Drilling Costs and Rates . . . • . . . • • . . . . , . .TABLES I. II. III. Costs of Core Drilling Per Meter. . . . .ABSTRACT . . • L vi vi vii INTRODUCTION DRILLING . • Surface

Kurfurst, P.J.

2011-01-01T23:59:59.000Z

474

3-Cylinder Turbocharged Gasoline Direct Injection: A High Value...  

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

Cylinder Turbocharged Gasoline Direct Injection: A High Value Solution for Euro VI Emissions 3-Cylinder Turbocharged Gasoline Direct Injection: A High Value Solution for Euro VI...

475

SPIE Europe spie.org/events/emtadvance TEL: +44 29 20 89 4747 spieeurope@spieeurope.org 1 Building a Better Future with Light  

E-Print Network [OSTI]

, and Applications 2­4 May 2007 Gran Hotel Costa Meloneras Maspalomas, Gran Canaria, Spain Microtechnologies (Spain) Roberto Sarmiento Rodríguez, Univ. Las Palmas de Gran Canaria (Spain) Steve Kang, Univ, Koç Univ. (Turkey) Cochairs: Gonçal Badenes, Institut de Ciències Fotòniques (Spain); Giancarlo C

Islam, M. Saif

476

A network model of parametric working memory. Supplementary Material  

E-Print Network [OSTI]

obeys the current balance equation: CM dVi dt = -gL [Vi - VL]-gESE,i [Vi - VE]-gISI,i [Vi - VIA network model of parametric working memory. Supplementary Material Paul Miller1 , Carlos D Brody2

Brody, Carlos

477

Fish Bulletin No. 79. A Key to Some Southern California Fishes Based on Vertebral Characters  

E-Print Network [OSTI]

11-VI to VII. Katsuwonus pelamis (Linnaeus). Skipjack. Therhessodon, 75 Katsuwonus pelamis, 53 Lepidopsetta bilineata,

Clothier, Charles R

1950-01-01T23:59:59.000Z

478

Samuel Sandoval Solis The Dissertation Committee for Samuel Sandoval Solis Certifies that this is the  

E-Print Network [OSTI]

Ciencia y Tecnologia); this Mexican institution provided me all the financial #12;vi resources during my

Pasternack, Gregory B.

479

Clarinet in Bb Moderato q  

E-Print Network [OSTI]

oe oe f m chai yim to vim A vi nu mal 21 chai yim to vim A vi nu mal chai yim to vim A vi nu mal 21 chai yim to vim A vi nu mal J oe .oe J oe oe oe oe oe Db Gb kei nu cha deish a b kei nu cha

Cytron, Ron K.

480

Evaluation of Hypervelocity Gold Nanoparticles for Nanovolume Surface Mass Spectrometry  

E-Print Network [OSTI]

in Figure VI-1 ................................................................................................ 166 VI-3 SI yields for samples containing various amounts of silver and gold on top of a PMMA film analyzed by massive gold clusters... and Bi+ ........ 169 VI-4 Negative mode mass spectrum from atomic-SIMS analysis of a PMMA surface ........................................................................................... 170 VI-5 Proposed structures for fragment ions...

DeBord, John 1986-

2012-08-16T23:59:59.000Z

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


481

Dynamics of ice shelf rift propagation and iceberg calving inferred from geodetic and seismic observations  

E-Print Network [OSTI]

2. Ice Shelves . . . . . . . . . . . . . . . . .5. Ice Rheology . . . . . . . . . . . . . 6.vi Calving Glaciers and Ice

Bassis, Jeremy N.

2007-01-01T23:59:59.000Z

482

1 Managed by UT-Battelle for the Department of Energy Presentation_name  

E-Print Network [OSTI]

(VI)-contaminated groundwater and sediments This study investigated the effect of electron donors (ethanol and acetate reduction of U(VI) Microcosm studies show that ethanol amendment biologically reduced U(VI) at significantly for increased U(VI) reduction and precipitation Both acetate and ethanol increased the Geobacteraceae population

483

STAFF COUNCIL AGENDA Wednesday, August 11, 2010  

E-Print Network [OSTI]

. University Safety and Security (Lynne Boyer) v. Women's Center (Jacqueline Long) vi. IR Security, Planning

O'Toole, Alice J.

484

Staff Council Meeting October 07, 2009  

E-Print Network [OSTI]

. University Safety & Security Committee: v. Women's Center: vi. IR Security, Planning & Policy Committee: vii

O'Toole, Alice J.

485

Official Approved Minutes UT DALLAS STAFF COUNCIL MEETING MINUTES  

E-Print Network [OSTI]

. UNIVERSITY SAFETY AND SECURITY (Lynne Boyer) v. WOMEN'S CENTER (Jacqueline Long) vi. IR SECURITY, PLANNING

O'Toole, Alice J.

486

Development of a Beowulf-Class High Performance Computing System for Computational Physics - Applications and Computational Aspects Of Modeling Excitable Media Using Cellular Automata  

E-Print Network [OSTI]

vi List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Chapter 1

W. E. S. Yu; William Emmanuel; S. Yu; Jerrold G. Garcia; Benjamin O. Chan; John Holdsworth Ph. D; Fabian V. Dayrit; Fabian V. Dayrit, Ph.D., Ph.D., Ph.D., Ph.D.

2001-01-01T23:59:59.000Z

487

United States National Plan of Action  

E-Print Network [OSTI]

), and Migratory Bird Treaty Act (MBTA) VI. Presidential Executive Order 13186 ­ Responsibilities of Federal

488

Information requested in Protocol No  

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

and Distribution Levels ... 10 VI. Facilitating the Deployment of Demand Response and Distributed Variable Resources......

489

Physician Preference Cardiac Alert Modality system  

E-Print Network [OSTI]

and ~ The icon/connector The front panel specifies the user interface of the VI. The block diagram consists of the executable code that is created using nodes, terminals, and wires. With the icon/connector you can use a VI as a subVI in the block diagram... of another VI, A VI consists of an interactive user interface, a dataflow diagram that serves as the source code, and icon connections that allow the VI to be called from higher-level VIs. An application is created by starting at the top-level VI...

Borade, Pravin

2001-01-01T23:59:59.000Z

490

Neural network technology for automatic fracture detection in sonic borehole image data  

E-Print Network [OSTI]

. 3 Neural Network Training and Testing VI. EXPERIMENTAL DESIGN AND RESULTS . ?39 . . . 40 . . . 44 46 VI. I Experimental Design Vl. l. I Expert Evaluation of the BHTV-Data VI. 1. 2 Design of the Neural System Experiment VI. 1. 3 Description... of the BHTV-Data Representations . . . VI. 2 Experimental Results V1. 3 Summary and Discussion VII. CONCLUSION AND FUTURE WORK . . . 46 . . . . 48 . 50 . . . 57 . . . 89 Vll. I Model-Based Recognition . . . VII. 2 Intelligent Neurocontrol...

Schnorrenberg, Frank Theo

1992-01-01T23:59:59.000Z

491

E-Print Network 3.0 - agregado grueso reciclado Sample Search...  

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

RECICLADO Y... avances cientficos se enfocan en gran Fabricacin con cero emisiones Reciclado y valorizacin de... primas, reciclado de productos, ms adaptados al...

492

E-Print Network 3.0 - algunos efectos del Sample Search Results  

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

climtico 2001 Summary: muestran los efectos del gran incremento creciente de las emisiones antropgenas durante la era industrial... los ltimos decenios. Algunos aspectos...

493

E-Print Network 3.0 - aspectos relevantes para Sample Search...  

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

2. ESTRUCTURA A GRAN ESCALA DEL Source: Canarias, Instituto de Astrofisica de (IAC) Collection: Physics 11 Evaluacion en entornos de recomendacion mediante tecnicas de...

494

E-Print Network 3.0 - aluminio primario del Sample Search Results  

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

y que se reciben en el gran cuenco ... Source: Canarias, Instituto de Astrofisica de (IAC) Collection: Physics 7 Franois TESSIER CRIA Universit Paris 1 Panthon-Sorbonne 1...

495

E-Print Network 3.0 - artroplastia total cementada Sample Search...  

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

del Arco de Cazorla (Jan, Cordillera Summary: cementadas, de unos 10 metros de poten- cia, con estratificaciones cruzadas planares y en artesa de gran Source: Herrera, Carlos M....

496

E-Print Network 3.0 - al vih primer Sample Search Results  

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

del mundo dedicadas al desarrollo: un conjunto de objetivos sen- cillos pero de gran envergadura... contra el hambre, pero en algunas regiones ha habido retroceso debido...

497

E-Print Network 3.0 - analyse thermique differentielle Sample...  

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

la dilatation thermique du cuivre. Nous trouvons une variation relative... influencer les gran- deurs ci-dessus et notamment la dilatation thermique. Nous avons pu ainsi recemment...

498

E-Print Network 3.0 - avellaneda entre cuba Sample Search Results  

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

tres a la relacin entre Espaa, Iberoamrica y Masonera, formando el primer gran foro para los Source: Ecole Polytechnique, Centre de mathmatiques Collection:...

499

E-Print Network 3.0 - adolescente effets tardifs Sample Search...  

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

de investigaciones en dos continentes: Europa y Amrica. Es tambin el resultado de una gran curiosidad e inters Summary: , Robin se interes a los adolescentes trabajadores...

500

E-Print Network 3.0 - acting andrs martin Sample Search Results  

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het... werktijd en in binnen- en buitenland. Wissam Chemissany, Andres Collinucci, Ulf Gran, Rein Hal- ... Source: Groningen, Rijksuniversiteit - Centre for Ecological and...