Powered by Deep Web Technologies
Note: This page contains sample records for the topic "vi van dyke" 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.


1

Betty Van Dyke: The Van Dyke Ranch  

E-Print Network [OSTI]

s not work. Yes. Younger Apprentice Organic Farmers I admirein the area, when they were young apprentice farmers.When they were young, apprentice farmers. Jim picked all the

Rabkin, Sarah

2010-01-01T23:59:59.000Z

2

Betty Van Dyke: The Van Dyke Ranch  

E-Print Network [OSTI]

Yugoslavia, from what is now Croatia. My grandfather came inmy father grew up in Croatia and he was in charge of feedingout how they harvested in Croatia, because I knew that every

Rabkin, Sarah

2010-01-01T23:59:59.000Z

3

Betty Van Dyke: The Van Dyke Ranch  

E-Print Network [OSTI]

Then I had to go into cold storage, because we would have aman. He would let me cold-storage all my apricots there.day, keep the rest of it in cold storage, and it would last.

Rabkin, Sarah

2010-01-01T23:59:59.000Z

4

A Miocene Basanite Peperitic Dyke At Stanley, Northwestern Tasmania...  

Open Energy Info (EERE)

peperite texture. The dyke is 2 m wide and has intruded basaltic breccia ("host sediment"). One contact of the dyke is fluidally shaped, and amoeboid apophyses 10-25 cm long...

5

Dyke quality assessment by remote sensing  

E-Print Network [OSTI]

2009 4Reeuwijk - Hack #12;3 Peat dyk (veenkade ­ boezemkade) · 4000 km of peat dykesp y · Peat dykes keep large part of Western Netherlands dry · Peat is highly variable · Difficult what is the strength Oct 2009 13Reeuwijk - Hack Reeuwijk location Peat dyk (veenkade ­ boezemkade) · Peat decays (oxidizes

Hack, Robert

6

A post-Caledonian dolerite dyke from Magery, North Norway: age and geochemistry  

E-Print Network [OSTI]

A post-Caledonian dolerite dyke from Magerøy, North Norway: age and geochemistry DAVID ROBERTS-Caledonian dolerite dyke from Magerøy, North Norway: age and geochemistry. Norsk Geologisk Tidsskrift, Vol. 71, pp, Geological Survey of Norway, Post Box 3006-Lade, N-7(}()2 Trondheim, Norway; John G. Mitchell, Department

Andersen, Torgeir Bjørge

7

David Klahr Walter van Dyke Bingham Professor of Cognitive Development and Education Sciences  

E-Print Network [OSTI]

(Board of Governors 2003-08) International Society for the Psychology of Science and Technology (ISPST, Massachusetts Institute of Technology M.S. (1965) Graduate School of Industrial Administration, Carnegie Institute of Technology Ph.D. (1968) Graduate School of Industrial Administration, Carnegie Mellon

Klahr, David

8

An Archean Oceanic Felsic Dyke Swarm In A Nascent Arc- The Hunter...  

Open Energy Info (EERE)

Felsic Dyke Swarm In A Nascent Arc- The Hunter Mine Group, Abitibi Greenstone Belt, Canada Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: An...

9

nLOCKHEED MARTI MANAGED AND OPERATED BY  

E-Print Network [OSTI]

Loss Mechanisms: No-Load and Load Losses ...... 2-3 2.1.3 Characteristics of Liquid- and Dry-Type of Energy Conservation Standards for Distribution Transformers P. R. Barnes J. VI. Van Dyke 5. W. Mc FOR DISTRIBUTION TRANSFORMERS P. R. Barnes J. W. Van Dyke B. W. McConnell S. Das . Published: July 1996 Prepared

10

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...

11

De toepasbaarheid van ISO 9126 voor kwaliteitsbeoordeling van m-  

E-Print Network [OSTI]

1 De toepasbaarheid van ISO 9126 voor kwaliteitsbeoordeling van m- services. Bachelor scriptie behulp van beschikbare literatuur een antwoord op de vraag of ISO 9126 toereikend is voor de beoordeling van de kwaliteit van m- services. De ISO 9126 standaard is bedoeld voor de beoordeling van kwaliteit

Lucas, Peter

12

Van Hove's Birthday  

ScienceCinema (OSTI)

"Happy Birthday Léon!" Plusieurs orateurs rendent hommage à L.Van Hove et son travail à l'occasion de son 65me anniversaire. A la fin remerciements de L.Van Hove.

None

2011-04-25T23:59:59.000Z

13

Pluton-dyke relationships in a Variscan granitic complex from AMS and gravity modelling. Inception of the extensional tectonics  

E-Print Network [OSTI]

Pluton-dyke relationships in a Variscan granitic complex from AMS and gravity modelling. Inception Orléans cedex 2, France Abstract The Carnac granitic Complex (South Armorican Domain, Western France zones in the western part of the complex, interpreted as the pluton feeder zones. The internal granitic

Paris-Sud XI, Université de

14

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

15

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

16

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...

17

Mineralogy and Geochemistry of Soils of Ultramafic Origin from the Great Dyke, Zimbabwe and Gillespie County, Texas  

E-Print Network [OSTI]

Ni ..................................................................................... 18 Occurrence of Cr (VI) in soils ............................................... 19 Mineral compositions of soils and parent rocks..., silt and rock fragments ........................ 95 Chlorite particles ............................................................. 95 Talc particles...

Bangira, Courage

2012-02-14T23:59:59.000Z

18

De strijd om groepsrechten - Strategiën van de Marrons van Suriname.  

E-Print Network [OSTI]

??Minderheden kunnen verschillende strategiën gebruiken om hun rechten te behalen of te verdedigen. Aan de hand van de strategiën organisatie, politiek, media en internationale verbanden… (more)

Jansen, W.D.

2008-01-01T23:59:59.000Z

19

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

20

Calc-alkaline mafic rocks of the Black Dyke Formation: Remnants of the final activity of a submerged Permian volcano  

SciTech Connect (OSTI)

The Permian Black Dyke Fm., which occurs as large tectonic slices within the Luning allochthon in the Excelsior Mountains, NV, forms an E-W trending anticline at Black Dyke Mountain. The 800-m thick stratigraphic succession consists of volcanic and pyroclastic rocks overlain conformably by volcaniclastic sediments. Along the northern limb of the anticline, the rocks consist of mafic porphyritic lavas, breccias, and graded and ungraded pyroclastic beds. The sedimentary unit consists of thick volcaniclastic turbidites overlain by conglomerates, sandstones, and mudstones. Along the southern limb of the anticline, the sequence is replaced by reworked breccia, tuffs, and sandstones. Mafic plutonic rocks occur as xenoliths in the lavas and breccias, and as coeval plugs intruding the section. Gabbros show cumulate or porphyritic textures and are composed of amph, cpx, and zoned plag. Their Ti/V (14.5--15) and Nb/Y (0.25--0.3) ratios fall in the range commonly found in calc-alkaline rocks. Diorite porphyry shows high Al[sub 2]O[sub 3], ZrO[sub 2], and REE abundances indicating that this rock is more fractionated. Basalts and andesites are plag-cpx-opx phyric. They often include glomeroporphyritic clots of cpx with amph coronas. Some rocks exhibit fluidal textures. Both volcanic and plutonic rocks show homogeneous geochemical features and similar crystallization sequences: Fe-Ti oxides---->plag---->opx + cpx----> brown zoned hbl, suggesting that they are cogenetic. Thus, the lower part of the Black Dyke Fm. likely represents the final products formed in a calc-alkaline magma chamber because pyroclastic rocks prevail over lava flows and abundant early crystal cumulates occur as plugs or as inclusions in the lavas and breccias.

Blein, O.; Lapierre, H.; Pecher, A. (URA-CNRS, Grenoble (France)); Schweickert, R.A. (Univ. of Nevada, Reno, NV (United States). Dept. of Geological Science)

1993-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "vi van dyke" 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

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

22

Huub van Dam | 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 DocumentationP-SeriesFlickr FlickrGuidedCH2MLLC HistoryVeteranstoHuub van Dam Recent Highlights

23

Julie Crenshaw Van Fleet  

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 EnergyEnergyENERGY TAX POLICIES7.pdfFuel2007 | Department7January 2015JimJulie Crenshaw Van Fleet 127 S.

24

Huub van Dam | 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: Vegetation ProposedUsingFun withconfinement plasmasSandy-Nor'easter Situation ReportsHuub van Dam Recent

25

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

26

A calculation of the van der Waals potential and the hyperfine pressure shift for H-He  

E-Print Network [OSTI]

- lation, a ghost orb1tal approach is developed to a1d 1n choos1ng helium ground state conf1gurations. Configurations used to represent the van der Waals interact1on are chosen using osc1llator strength sum rules to determine most of the orb1tal... to represent H-He ground state . . . . 38 IV. Ground state valence bond conf1gurations 38 V. He ground state energ1es and H-He interact1on potential. VI. Bas1s functions used to represent van der Waals interact1on 41 VII. Comparison of dipole...

Hamm, Thomas Francis

1981-01-01T23:59:59.000Z

27

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

28

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

29

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

30

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)...

31

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:...

32

Van de redactie Dit voorjaar staat Leiden in het teken van het boek. In Stedelijk  

E-Print Network [OSTI]

Oplettende lezer Marginalia: Huizinga en Oort » 16 Bulletin van de Universiteitsbibliotheek Leiden en het

van den Brink, Jeroen

33

Physics Research Universiteit van Amsterdam  

E-Print Network [OSTI]

Physics Research 1996-2002 Universiteit van Amsterdam and Vrije Universiteit Amsterdam October 2005 #12;QANU / Physics UvA and VU2 Quality Assurance Netherlands Universities (QANU) Catharijnesingel 56 with the permission of QANU if the source is men- tioned. #12;QANU / Physics UvA and VU 3 Table of contents Preface 5

van Rooij, Robert

34

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

35

Koptische muziek, de muziek van de christelijke bevolking van Egypte, is in de Westerse Wereld een onbekend en weinig onderzocht gebied. Alleen van liturgische Koptische muziek  

E-Print Network [OSTI]

Koptische muziek, de muziek van de christelijke bevolking van Egypte, is in de Westerse Wereld een Egypte werden met elkaar vergeleken. Uit de analyses van deze melodieën bleek dat de improvisatorisch

Hille, Sander

36

Uitgaande geldstroom Type Naslagwerk Factuurvereisten van de Universiteit Utrecht  

E-Print Network [OSTI]

Uitgaande geldstroom Type Naslagwerk Factuurvereisten van de Universiteit Utrecht Versie 1.1 Pagina van de belastingdienst en aan de eisen van de Universiteit Utrecht Factuurvereisten van de Universiteit Utrecht (*) Hieronder volgen de vereisten die de Universiteit Utrecht stelt aan de facturen van

Utrecht, Universiteit

37

Thema's van de lezing: De oliewinning bereikt binnenkort zijn top  

E-Print Network [OSTI]

-energie, Solar- century, als een praktische manier om de klimaatverandering te bestrijden. De fameuze is voorzitter van Carbon Tracker, een denktank van analisten van binnen en buiten het financiële hart van Londen. De waarschuwingen van Carbon Tracker zouden er wel eens voor kunnen gaan zorgen dat de kapitaalstroom

Utrecht, Universiteit

38

Interpretation of the Lewisville sequence, Van Oil Field, Van Zandt County, Texas  

E-Print Network [OSTI]

units. . . . Waterflood performance for A) South Van Lewis- ville Unit, B) Carroll Unit, and C) Southwest Van Lewisville Unit. Modified from Sellers and Phillips (1979) . Electric log response through cored sections in the Stewart 68-8 and Wells 47... and Dexter Formations of the Woodbine Group, Van Field. Physical characteristics of fluvial or valley- fill model. Modified from Visher (1965). 10 20 Average composition of Lewisville sandstones in the Southwest Van Lewisvi lie Unit . 33 INTRODUCTION...

Ueckert, John Fant

1981-01-01T23:59:59.000Z

39

S.Van der Meer tribute  

ScienceCinema (OSTI)

Plusieurs intervenants rendent hommage à Simon Van der Meer né en 1925 à La Haye NL et prix nobel de physique en 1984

None

2011-04-25T23:59:59.000Z

40

BAS C. VAN FRAASSEN CLARENDON PRESS -OXFORD  

E-Print Network [OSTI]

THE SCIENTIFIC IMAGE BAS C. VAN FRAASSEN CLARENDON PRESS - OXFORD #12;18 ARGUMENTS CONCERNING adequate, ones whose models fit the observable phenomena. while recognizing that what counts

Fitelson, Branden

Note: This page contains sample records for the topic "vi van dyke" 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

DE DOCENTENPRIJS EN DE PRIJS DOCENTTALENT VAN DE UNIVERSITEIT UTRECHT Het College van Bestuur heeft op 26 mei 1994 de "Docentenprijs van de Universiteit Utrecht"  

E-Print Network [OSTI]

1 DE DOCENTENPRIJS EN DE PRIJS DOCENTTALENT VAN DE UNIVERSITEIT UTRECHT Het College van Bestuur heeft op 26 mei 1994 de "Docentenprijs van de Universiteit Utrecht" ingesteld. Het doel is docenten van de Universiteit Utrecht te stimuleren en te waarderen vanwege hun verdiensten voor het universitaire

Utrecht, Universiteit

42

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

43

Corridorontwikkeling in Suriname. De potentie van de as Paramaribo - Zanderij.  

E-Print Network [OSTI]

??Er zijn drie grote bedreigingen voor de verdere ontwikkeling van Paramaribo: er is ruimtegebrek, er is sprake van structurele verkeerscongestie en frequent wateroverlast. Een oplossing… (more)

Kooijmans, J.

2013-01-01T23:59:59.000Z

44

Naam: dhr. prof. dr. F.G. Huisman Leeropdracht Geschiedenis van de geneeskunde  

E-Print Network [OSTI]

Onderzoek- en Onderwijscommissie van het Huizinga Instituut. · Bestuurslid van de Stichting Historia

Utrecht, Universiteit

45

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

46

De grote droge tijd. Het Nederlandse Surinamebeleid ten tijde van de opschorting van het ontwikkelingssamenwerkingsverdrag, 1982-1988.  

E-Print Network [OSTI]

??In deze scriptie wordt aandacht besteed aan de vraag in hoeverre het Nederlandse Surinamebeleid ten tijde van de opschorting van het ontwikkelingssamenwerkingsverdrag tussen beide landen… (more)

Verheij, Elise

2007-01-01T23:59:59.000Z

47

Risicofactoren van IT-outsourcing; welke invloed heeft het offshoren door de IT-dienstverlener op de risicofactoren van de uitbesteder?.  

E-Print Network [OSTI]

??Het onderwerp van dit afstudeerverslag voor de Masteropleiding Business Processes and IT aan de Open Universiteit Nederland betreft de risicofactoren van IT-outsourcing. De groei van… (more)

Verboon, Margreet

2008-01-01T23:59:59.000Z

48

Journal of the Geological Society, London, Vol. 154, 1997, pp. 961973, 10 figs, 2 tables. Printed in Great Britain The age and tectonic significance of dolerite dykes in western Norway  

E-Print Network [OSTI]

in Great Britain The age and tectonic significance of dolerite dykes in western Norway TROND H. TORSVIK1,3 , TORGEIR B. ANDERSEN2 , ELIZABETH A. EIDE1 & HARALD J. WALDERHAUG3 1 Geological Survey of Norway, PB 3006 Lade, N-7002 Trondheim, Norway 2 Department of Geology, University of Oslo, PO Box 1047, 0316 Blindern

Andersen, Torgeir Bjørge

49

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...

50

DOTtige lijnkernen van de zon Sterrekundig Instituut Utrecht en  

E-Print Network [OSTI]

DOTtige lijnkernen van de zon Rob Rutten Sterrekundig Instituut Utrecht en Institute grondslag van de astrofysica. Hier in Utrecht werd analyse van het zonnespectrum onder Julius (een neef van Minnaert's onderzoeksterrein. Intussen doen we in Utrecht geen zonnespectroscopie meer. Maar lijnkernen

Rutten, Rob

51

COMMUNITYMAGAZINE VAN DE UGENT De duurzaamheidsvisie  

E-Print Network [OSTI]

;2 DURF DENKEN 3D-PRINTING `CREATIVITEIT WORDT WERKELIJKHEID, LAAG NA LAAG' #12;3 Studenten laten maken. We onderzoeken nu ook hoe we 3D-printing kunnen inzetten in de productie van kleine reeksen

Gent, Universiteit

52

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

53

Volwassenheid BPM-vaardigheden - De ontwikkeling en beoordeling van een zelfevaluatiemethode.  

E-Print Network [OSTI]

??Business Process Management (BPM) is het integraal beheren van de processen van de organisatie. Sommige organisaties zullen verder zijn met de ontwikkeling van hun BPM-vaardigheden… (more)

Geel, Wilma van

2012-01-01T23:59:59.000Z

54

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

55

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

56

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

57

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

58

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

59

Het Saramacca project : een plan van joodse kolonisatie in Suriname.  

E-Print Network [OSTI]

??Van 1946 tot 1948 onderhandelde een Amerikaans-Joodse organisatie, de Freeland League, met de Nederlandse en Surinaamse regeringen over de vestiging in Suriname van 30.000 joodse… (more)

Heldring, Alexander

2010-01-01T23:59:59.000Z

60

FOR ASSESSING ROOM ACOUSTICS Jasper van Dorp Schuitman  

E-Print Network [OSTI]

AUDITORY MODELLING FOR ASSESSING ROOM ACOUSTICS Jasper van Dorp Schuitman #12;Auditory modelling Promoties, in het openbaar te verdedigen op donderdag 15 september 2011 om 10:00 uur door Jasper VAN DORP

Note: This page contains sample records for the topic "vi van dyke" 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

Professor Paul van Gardingen Books and Book Chapters  

E-Print Network [OSTI]

RESOURCES (CPRs). Neiland, A.E., Bennet, E., (Eds.) IDDRA, Portsmouth, 141-156. van Gardingen, P.R. (2003

62

PHOTOGRAPHS FROM THE J. H. VAN VLECK EXHIBIT PHYSICS DEPARTMENT  

E-Print Network [OSTI]

at the Sixth Solvay Conference, 1930. Van Vleck is in the back row, third from the right, standing next

Saffman, Mark

63

Jet production in ep collisions Pierre Van Mechelen  

E-Print Network [OSTI]

Jet production in ep collisions Pierre Van Mechelen University of Antwerpen Pierre electroproduction #12; Jet production in ep collisions Pierre Van Mechelen HERA, H1 and ZEUS H1 ZEUS p (920 GeV) e ± (27.6 GeV) #12; Jet production in ep collisions Pierre Van Mechelen Jet finding algorithms Clustering

64

Kunstmatige Intelligentie (AI) Hoofdstuk 25 van Russell/Norvig = [RN  

E-Print Network [OSTI]

AI Kunstmatige Intelligentie (AI) Hoofdstuk 25 van Russell/Norvig = [RN] Robotica voorjaar 2014 College 8, 8 april 2014 www.liacs.nl/home/kosters/AI/ 1 #12;AI--Robotica Robots Een robot is een "actieve schrijver Isaac Asimov (auteur van "I, Robot") zijn de drie (later vier) wetten van de robotica: 1. Een

Kosters, Walter

65

Workflow Patronen: Een gereedschap voor het evalueren van BPM software  

E-Print Network [OSTI]

Workflow Patronen: Een gereedschap voor het evalueren van BPM software Prof.dr.ir. Wil van der ook niet meer over workflow-management systemen maar over Business Process Management (BPM) systemen. In het vervolg gebruiken we de term BPM om te verwijzen naar dit bredere gebied. Ondanks het belang van

van der Aalst, Wil

66

Het blad van papier 21 februari 2010 N 498 Het studentenblad van de universiteit Gent  

E-Print Network [OSTI]

spul in het Ufo // nieuwe resto aan de Sterre // golfenergie // muziekblogs // Stefan Hertmans // zeker geneeskundestagiairs 14 Een gids in het Ufo 15 Decaan van de Week 16 Nieuw resto Sterre 17 Over de plas en daarbuiten

67

WHITE DWARFS H. M. Van Horn  

E-Print Network [OSTI]

WHITE DWARFS H. M. Van Horn Department of Physios and Astronomy £ §.£.Kenneth Mees Observatory of matter in the dense, degenerate cores of white dwarfs, together with efficient heat transport through the high-density envelopes of these stars, affect the theoretical white dwarf lu- minosity function

Paris-Sud XI, Université de

68

Utility, informativity and protocols Robert van Rooy  

E-Print Network [OSTI]

Utility, informativity and protocols Robert van Rooy ILLC/University of Amsterdam R particular natural assumptions the utility of questions and answers reduces to their informativity, and that the ordering relation induced by utility sometimes even reduces to the logical relation of entailment

van Rooij, Robert

69

Power-Aware Epidemics Robbert van Renesse  

E-Print Network [OSTI]

Power-Aware Epidemics Robbert van Renesse Dept. of Computer Science, Cornell University, Ithaca, NY investi- gate the use of power in three styles of epidemic protocols: basic epidemics, neighborhood flooding epidemics, and hi- erarchical epidemics. Basic epidemics turn out to be highly power hungry

Keinan, Alon

70

Professor Garret van Ryzin1 Columbia University  

E-Print Network [OSTI]

Professor Garret van Ryzin1 Columbia University Columbia Business School Wednesday April 27, Time Garrett is the Paul M. Montrone Professor of Decision, Risk and Operations at the Columbia University Columbia University, and the degrees of S.M. in Electrical Engineering and Computer Science and Ph

Lin, Xiaodong

71

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...

72

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...

73

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

74

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

75

Samenvatting CO2 is het meest belangrijke broeikasgas. The concentratie van CO2 in de atmosfeer  

E-Print Network [OSTI]

Samenvatting CO2 is het meest belangrijke broeikasgas. The concentratie van CO2 in de atmosfeer brandstoffen en veranderingen in landgebruik. Toenemende concentraties van CO2 in de atmosfeer zullen naar toename van CO2 in de atmosfeer op de dynamiek van de microbiële gemeenschap in de directe omgeving van de

van den Brink, Jeroen

76

500 ZENITNovEmbEr2010 Warmte-eilandeffect van de stad Utrecht  

E-Print Network [OSTI]

500 ZENITNovEmbEr2010 Warmte-eilandeffect van de stad Utrecht Foto: Eclipse Ballooning, www waargenomen opwarming van de aarde. Het KNMI heeft daarom mobiele metingen ver- richt in de stad Utrecht. De indicatie van het effect van het warmte-eiland van de stad Utrecht op de temperatuur in De Bilt. W armte

Brandsma, Theo

77

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

78

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

79

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

80

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

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


81

The Blake Ragsdale Van leeR Building Renewal  

E-Print Network [OSTI]

The Blake Ragsdale Van leeR Building Renewal Campaign Defining the Technological ResearchR Building Renewal Architectural renderings are representative and subject to change with final design in such places as Lorraine, France, and Shanghai, China. Renewing the Promise: The Van Leer Building

Li, Mo

82

United Parcel Service Evaluates Hybrid Electric Delivery Vans (Fact Sheet)  

SciTech Connect (OSTI)

This fact sheet describes how the National Renewable Energy Laboratory's Fleet Test and Evaluation team evaluated the 12-month, in-service performance of six Class 4 hybrid electric delivery vans - fueled by regular diesel - and six comparable conventional diesel vans operated by the United Parcel Service.

Not Available

2010-02-01T23:59:59.000Z

83

AI en Data mining Van AI tot Data mining  

E-Print Network [OSTI]

een heel breed vakgebied, met onder andere: · robotica: Hoe programmeer je een robot? · data mining soort computerprogramma's doet mee in de jaarlijkse Loebner-contest. 6 #12;AI Robotica Een robot is een science fiction schrijver Isaac Asimov (auteur van "I, Robot") zijn de drie wetten van de robotica: 1. Een

Kosters, Walter

84

Studenttopsporter aan de Universiteit Utrecht Het krijgen van een topsportverklaring  

E-Print Network [OSTI]

1 Studenttopsporter aan de Universiteit Utrecht Het krijgen van een topsportverklaring Vóór je een prestaties blijken. Wanneer val je onder de topsportregeling? De Universiteit Utrecht hanteert dezelfde aan de Universiteit Utrecht in aanmerking voor een topsportstatus, als je in het bezit bent van een

Utrecht, Universiteit

85

Natural Disaster Survey Report Ft. Smith and Van Buren, Arkansas,  

E-Print Network [OSTI]

and conversations with volunteer amateur radio operators, members of the print and broadcast media in Ft. Smith to the U.S. Congress, to local government officials in Ft. Smith and Van Buren, and to the media on May 21Natural Disaster Survey Report Ft. Smith and Van Buren, Arkansas, Tornado of April 21, 1996 U

86

9 februari 2005 Nieuwe UFO versie van kracht  

E-Print Network [OSTI]

9 februari 2005 Nieuwe UFO versie van kracht Grootschalig gebruik van een geheel nieuw functie-indelingssysteem als UFO leidt onherroepelijk tot problemen. In de afgelopen periode is dan ook gebleken dat er de nodige onduidelijkheden, onvolkomenheden en omissies in het UFO-materiaal zaten. In de afspraken bij de

Franssen, Michael

87

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

88

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...

89

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

90

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)...

91

Erken ons! VIDS en OIS, de stem van Inheemsen in Suriname.  

E-Print Network [OSTI]

??Deze scriptie beschrijft de gevolgen van uitsluitingsprocessen van Inheemsen in Suriname. De door de Inheemsen opgerichte organisaties, VIDS en OIS, staan centraal in deze sciptie.… (more)

Bruin, M.N.

2008-01-01T23:59:59.000Z

92

YOLO! - You Only Live Once. Onderzoek naar het goede leven in de digitale leefwereld van jongeren.  

E-Print Network [OSTI]

??Met de komst van internet, en bovenal met de komst van het interactieve Web 2.0, zijn er veel filosofische, psychologische, economische en sociologische vragen ontstaan.… (more)

Pepping, Thijs

2014-01-01T23:59:59.000Z

93

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...

94

RaPID: THE END OF HEURISTIC PID TUNING Peter Van Overschee, Christiaan Moons, Wim Van Brempt  

E-Print Network [OSTI]

RaPID: THE END OF HEURISTIC PID TUNING Peter Van Overschee, Christiaan Moons, Wim Van Brempt Paul Vanvuchelen, Bart De Moor Abstract: RaPID (Robust Advanced PID Control) is a new and original engineer- ing tool for the design and implementation of optimal PID controllers. It integrates data acquisition

95

Fast Recovery in Software-Defined Networks Niels L. M. van Adrichem, Benjamin J. van Asten and Fernando A. Kuipers  

E-Print Network [OSTI]

primary and secondary paths com- puted by an OpenFlow controller. Our implementation reduces the recoveryFast Recovery in Software-Defined Networks Niels L. M. van Adrichem, Benjamin J. van Asten shortest paths may result in an unacceptably long recovery time. In this paper, we demonstrate that current

Kuipers, Fernando A.

96

Kenmerk: CvB 2003/2464 Op 12 november 2003 hebben het College van Bestuur van de Technische Universiteit  

E-Print Network [OSTI]

) overeenstemming bereikt over een TU/e UFO interne regeling bedenkingen. UFO Interne Regeling Bedenkingen Als de betreffende medewerker en een UFO-deskundige van de dienst Personeel en Organisatie die niet bij initiële invoering van UFO (eind 2003) is het mogelijk dat de termijnen niet gehaald kunnen worden als er

Franssen, Michael

97

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

98

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

99

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

100

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

Note: This page contains sample records for the topic "vi van dyke" 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

Developments for the Commuted Piano Scott A. Van Duyne  

E-Print Network [OSTI]

Developments for the Commuted Piano Scott A. Van Duyne CCRMA, Stanford University savd-string interaction, which is the focus of the rst part of this paper. We have further hybridized and simpli- ed

Smith III, Julius Orion

102

California Public Utilities Commission 505 Van Ness Ave., San Francisco  

E-Print Network [OSTI]

1 California Public Utilities Commission 505 Van Ness Ave., San Francisco OFFERS TIPS FOR IDENTIFYING UTILITY WORKERS SAN FRANCISCO, January 24, 2008 ­ The California Public Utilities Commission (CPUC) today reminded consumers of the importance of verifying employment of utility

103

alwyn van der: Topics by E-print Network  

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

stable even in presence of a spread of parameters. R. Yamapi; H. G. Enjieu Kadji; G. Filatrella 2010-01-19 255 Equation of State for the Two-component Van der Waals Gas with...

104

atoms van der: Topics by E-print Network  

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

stable even in presence of a spread of parameters. R. Yamapi; H. G. Enjieu Kadji; G. Filatrella 2010-01-19 308 Equation of State for the Two-component Van der Waals Gas with...

105

Lifshitz theory of van der Waals pressure in dissipative media  

E-Print Network [OSTI]

We derive a first--principles method of determining the van der Waals or Casimir pressure in a dissipative and dispersive planar multilayered system by calculating the Maxwell stress tensor in a fictitious layer of vacuum, that is eventually made to vanish, introduced in the structure. This is illustrated by calculating the van der Waals pressure in a thin film with dissipative properties embedded between two semi--infinite media.

Yi Zheng; Arvind Narayanaswamy

2010-11-27T23:59:59.000Z

106

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

107

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

108

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

109

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

110

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

111

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

112

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

113

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

114

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

115

DiVaDiVa is een Digitale nieuwsbrief van de vier Vakbonden vertegenwoordigd op de TU/e  

E-Print Network [OSTI]

. Nieuwe benadering van de indeling van secretaressefuncties Er is op basis van het primaire UFO TU/e. De UFO-indelingscriteria zijn concreter benoemd en de functiezwaarte elementen zijn voor de

Franssen, Michael

116

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

117

INEXACT KRYLOV SUBSPACE METHODS FOR LINEAR SYSTEMS # JASPER VAN DEN ESHOF + AND GERARD L. G. SLEIJPEN #  

E-Print Network [OSTI]

INEXACT KRYLOV SUBSPACE METHODS FOR LINEAR SYSTEMS # JASPER VAN DEN ESHOF + AND GERARD L. G@math.uu.nl). 125 #12; 126 JASPER VAN DEN ESHOF AND GERARD L. G. SLEIJPEN decreases, the demands on the qualit

Sleijpen, Gerard

118

INEXACT KRYLOV SUBSPACE METHODS FOR LINEAR SYSTEMS JASPER VAN DEN ESHOF AND GERARD L. G. SLEIJPEN  

E-Print Network [OSTI]

INEXACT KRYLOV SUBSPACE METHODS FOR LINEAR SYSTEMS JASPER VAN DEN ESHOF AND GERARD L. G. SLEIJPEN@math.uu.nl). 125 #12;126 JASPER VAN DEN ESHOF AND GERARD L. G. SLEIJPEN decreases, the demands on the quality

Sleijpen, Gerard

119

Van Turbo2 naar TurboWin Al eeuwen lang werden de gege-  

E-Print Network [OSTI]

Van Turbo2 naar TurboWin Al eeuwen lang werden de gege- vens over het weer aan boord van schepen' karakter te ge- ven, Turbo2 (Turbo Transmission of Weather Observations). Andere namen die indertijd werden

Koek, Frits

120

Twelve-Month Evaluation of UPS Diesel Hybrid Electric Delivery Vans  

SciTech Connect (OSTI)

Results of an NREL study of a parallel hybrid electric-diesel propulsion system in United Parcel Service-operated delivery vans show that the hybrids had higher fuel economy than standard diesel vans.

Lammert, M.

2009-12-01T23:59:59.000Z

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


121

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

122

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

123

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

124

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

125

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

126

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

127

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.

128

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

129

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

130

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

131

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

132

Naam: dhr. prof. dr. R. van Hillegersberg Leeropdracht Gastrointestinale Chirurgische Oncologie  

E-Print Network [OSTI]

: Van Hillegersberg R, Van den Berg JWO, Kort WJ, Terpstra OT, Wilson JHP. Selective accumulation, Giezeman MJ, Rinkes IH. First experience with robot-assisted thoracoscopic esophagolymphadenectomy, Cromheecke GJE and van Hillegersberg R. Robot-assisted thoracoscopic oesophagectomy for cancer. Br J Surg

Utrecht, Universiteit

133

Formulier R&O startgesprek | Faculteit W&N | versie januari 2009 Pagina 1 van 3  

E-Print Network [OSTI]

/begeleider Beoordelingsautoriteit ... Datum in dienst Datum R&O startgesprek 200 In het R&O startgesprek wordt het UFO - Wachtwoord leiden7 Van toepassing zijnde resultaatgebieden uit het UFO profiel Toevoegen van behalen resultaten op basis van de resultaatgebieden uit het UFO profiel, opgedragen taken, competenties

Hille, Sander

134

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

135

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

136

James W. Van Dam US Burning Plasma Organization  

E-Print Network [OSTI]

scenarios, ... · Diagnostics ­ High time/space resolution, velocity distribution measurements, ... · Plasma · Toroidal Alfvén Eigenmodes · Internal plasma diagnostic #12;Page 12 USBPO · Plasma ions and electrons: ­ TiJames W. Van Dam US Burning Plasma Organization US ITER Project Office Institute for Fusion Studies

137

arctic van test: Topics by E-print Network  

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

arctic van test First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Action Refinement in Testing with uioco...

138

Using renewal neurons to transmit information C. van Vreeswijk  

E-Print Network [OSTI]

Using renewal neurons to transmit information C. van Vreeswijk GCNU/UCL 17 Queen Square London WC1N neurons described by renewal processes. Unlike Poisson processes, these can have a refractory period decoder. This is not true for a generalized renewal process. The precise timing of the spikes yields more

van Vreeswijk, Carl

139

Corals and climate change Robert van Woesik, Ph.D.  

E-Print Network [OSTI]

to 2007) · Great Barrier Reef (latitude 19oS) · Okinawa (26oN) · Palau (7oN) · Kenya (3oS) · Galápagos (0o(months) van Woesik (2010) Proc Royal Soc 277: 715-722 adj. R2 = 0.809, p = 0.005 GBR Palau Okinawa Kenya

Jawitz, James W.

140

Numerica: a Modeling Language for Global Optimization Pascal Van Hentenryck  

E-Print Network [OSTI]

equilibrium problems, and design problems (e.g., nu­ clear reactor design). The field of global optimizationNumerica: a Modeling Language for Global Optimization Pascal Van Hentenryck Brown University Box or to optimize a nonlinear function subject to nonlinear constraints. This includes appli­ cations

Neumaier, Arnold

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


141

Landscape Maps for Enterprise Architectures L. van der Torre1  

E-Print Network [OSTI]

Landscape Maps for Enterprise Architectures L. van der Torre1 , M.M. Lankhorst2 , H. ter Doest2 , J, the Netherlands 3 Ordina, the Netherlands 4 CWI, Amsterdam, the Netherlands Abstract. Landscape maps of an easy to understand 2D 'map'. A landscape map view on architectures provides non-technical stake

van der Torre, Leon

142

Autocatalytic models describing ruminal in situ digestion J Van Milgen  

E-Print Network [OSTI]

Autocatalytic models describing ruminal in situ digestion J Van Milgen INRA, Station de Recherche sur la Nutrition des Herbivores, Theix, 63122 Saint-Genès-Champanelle, France Digestion of particulate avail- ability. Although microbes can be considered the cause of digestion, they are also the result

Paris-Sud XI, Université de

143

DHV water pumping optimization Simon van Mourik1  

E-Print Network [OSTI]

Chapter 6 DHV water pumping optimization Simon van Mourik1 Joris Bierkens2 Hans Stigter1 Martijn for optimizing a drinking water network over a horizon of 48 hours, given variable water demands, energy prices and constraints on the pumping strategy and water levels in the reservoirs. Both the dynamic model and goal

Rottschäfer, Vivi

144

Enhancing Fish Tank VR Jurriaan D. Mulder, Robert van Liere  

E-Print Network [OSTI]

Enhancing Fish Tank VR Jurriaan D. Mulder, Robert van Liere Center for Mathematics and Computer Science CWI Amsterdam, the Netherlands mullie¡ robertl¢ @cwi.nl Abstract Fish tank VR systems provide that resides at a fixed location. Therefore, fish tank VR systems provide only a limited virtual workspace

Liere, Robert van

145

Fluorocarbons: Surface Free Energies and van der Waals Interaction  

E-Print Network [OSTI]

Letters Fluorocarbons: Surface Free Energies and van der Waals Interaction Calum J. Drummond energies have been calculated for solid fluorocarbon materials by employing a method that utilizes of fluorocarbon polymers as ultra low-adhesive (optimally "non-stick") materials. Among similar classes

Chan, Derek Y C

146

What is Money? Jan van Eijck and Philip Elsas  

E-Print Network [OSTI]

What is Money? Jan van Eijck and Philip Elsas April 4, 2013 #12;2 It is early Spring 2013 and by learning from one another. They have decided to try to crack a difficult nut first: what is money to explain to me what money is. I have tried to prepare myself for this meeting by means of a bit

van Eijck, Jan

147

Shunting passenger trains: getting ready for Marjan van den Akker  

E-Print Network [OSTI]

Shunting passenger trains: getting ready for departure Marjan van den Akker Hilbrandt Baarsma Utrecht University P.O. Box 80.089 3508 TB Utrecht The Netherlands #12;Shunting passenger trains: getting of shunting train units on a railway station. Train units arrive at and depart from the station according

Utrecht, Universiteit

148

E-Print Network 3.0 - apoptosis increases chemosensitivity Sample...  

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

Informtion Decade's most highly cited apoptosis researcher... 1991-2001 (http:www.esi-topics.comapoptosisindex.html) 2002 Harry B. Van Dyke Award 20th Harry B Source:...

149

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

150

Set Design Costume Design Lighting Design Sound Design Van Phillips Jill Van Brussel William J. Stewart Phil Ingle  

E-Print Network [OSTI]

Miller* Paige Alley TIME: The early 1880's. ACT I Vandergelder's house in Yonkers, N. Y. ACT II Mrs. Molloy's hat store, New York City. Intermission ACT III The Harmonia Gardens Restaurant on the Battery. ACT IV Miss Van Huysen's house. Horace Vandergelder Cornelius Hackl Barnaby Tucker Malachi Stack

Ginzel, Matthew

151

Fault Process and Broadband Ground-Motion Simulations of the 23 October 2011 Van (Eastern Turkey) Earthquake  

E-Print Network [OSTI]

Fault Process and Broadband Ground-Motion Simulations of the 23 October 2011 Van (Eastern Turkey Abstract On 23 October 2011 an Mw 7.1 earthquake occurred in eastern Turkey, close to the towns of Van.1 Van earthquake occurred on 23 October 2011 in eastern Turkey, close to the towns of Van and Erci

Cerveny, Vlastislav

152

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

153

Spin-Flavor van der Waals Forces and NN interaction  

SciTech Connect (OSTI)

A major goal in Nuclear Physics is the derivation of the Nucleon-Nucleon (NN) interaction from Quantum Chromodynamics (QCD). In QCD the fundamental degrees of freedom are colored quarks and gluons which are confined to form colorless strongly interacting hadrons. Because of this the resulting nuclear forces at sufficiently large distances correspond to spin-flavor excitations, very much like the dipole excitations generating the van der Waals (vdW) forces acting between atoms. We study the Nucleon-Nucleon interaction in the Born-Oppenheimer approximation at second order in perturbation theory including the Delta resonance as an intermediate state. The potential resembles strongly chiral potentials computed either via soliton models or chiral perturbation theory and has a van der Waals like singularity at short distances which is handled by means of renormalization techniques. Results for the deuteron are discussed.

Alvaro Calle Cordon, Enrique Ruiz Arriola

2011-12-01T23:59:59.000Z

154

A van der Waals free energy in electrolytes revisited  

E-Print Network [OSTI]

A system of three electrolytes separated by two parallel planes is considered. Each region is described by a dielectric constant and a Coulomb fluid in the Debye-H\\"uckel regime. In their book Dispersion Forces, Mahanty and Ninham have given the van der Waals free energy of this system. We rederive this free energy by a different method, using linear response theory and the electrostatic Maxwell stress tensor for obtaining the dispersion force.

B. Jancovici

2006-02-15T23:59:59.000Z

155

1Electricity from Sunlight: The Van Allen Probes Solar Panels NASA's twin Van Allen Probes spacecraft will be launched in 2012. The  

E-Print Network [OSTI]

1Electricity from Sunlight: The Van Allen Probes Solar Panels NASA's twin Van Allen Probes of the surrounding four solar panel `wings' that provide power to the spacecraft instruments. The small blue rectangles within each of the four solar panels show the location of the solar cells used to power

156

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...

157

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...

158

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...

159

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

160

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

Note: This page contains sample records for the topic "vi van dyke" 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

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

162

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

163

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

164

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

165

Interim Project Results: United Parcel Service's Second-Generation Hybrid-Electric Delivery Vans (Fact Sheet)  

SciTech Connect (OSTI)

This fact sheet describes the performance evaluation of United Parcel Service's second-generation hybrid-electric delivery vans. The Fleet Test and Evaluation Team at the National Renewable Energy Laboratory (NREL) is evaluating the 18-month, in-service performance of 11 of these vans along with 11 comparable conventional diesel vans operating in Minneapolis, Minnesota. As a complement to the field study, the team recently completed fuel economy and emissions testing at NREL's Renewable Fuels and Lubricants (ReFUEL) laboratory.

Not Available

2012-01-01T23:59:59.000Z

166

Project Overview: United Parcel Service's Second-Generation Hybrid-Electric Delivery Vans (Fact Sheet)  

SciTech Connect (OSTI)

This fact sheet describes UPS second generation hybrid-electric delivery vehicles as compared to conventional delivery vehicles. Medium-duty commercial vehicles such as moving trucks, beverage-delivery trucks, and package-delivery vans consume almost 2,000 gal of fuel per year on average. United Parcel Service (UPS) operates hybrid-electric package-delivery vans to reduce the fuel use and emissions of its fleet. In 2008, the National Renewable Energy Laboratory's (NREL's) Fleet Test and Evaluation Team evaluated the first generation of UPS' hybrid delivery vans. These hybrid vans demonstrated 29%-37% higher fuel economy than comparable conventional diesel vans, which contributed to UPS' decision to add second-generation hybrid vans to its fleet. The Fleet Test and Evaluation Team is now evaluating the 18-month, in-service performance of 11 second-generation hybrid vans and 11 comparable conventional diesel vans operated by UPS in Minneapolis, Minnesota. The evaluation also includes testing fuel economy and emissions at NREL's Renewable Fuels and Lubricants (ReFUEL) Laboratory and comparing diesel particulate filter (DPF) regeneration. In addition, a followup evaluation of UPS' first-generation hybrid vans will show how those vehicles performed over three years of operation. One goal of this project is to provide a consistent comparison of fuel economy and operating costs between the second-generation hybrid vans and comparable conventional vans. Additional goals include quantifying the effects of hybridization on DPF regeneration and helping UPS select delivery routes for its hybrid vans that maximize the benefits of hybrid technology. This document introduces the UPS second-generation hybrid evaluation project. Final results will be available in mid-2012.

Not Available

2011-11-01T23:59:59.000Z

167

Desi Bouterse, Van autoritair-populistisch leider naar charismatisch-populistisch leider.  

E-Print Network [OSTI]

??In 1980 pleegde Bouterse met vijftien andere sergeanten een staatsgreep in Suriname. Bouterse werd al snel de leider van het militair regime, dat tot 1986… (more)

Maschhaupt, Reineke

2013-01-01T23:59:59.000Z

168

Meer dan arts alleen: De maatschappelijke betekenis van huisarts Sophie Redmond in laat-koloniaal Suriname.  

E-Print Network [OSTI]

??abstract__Abstract__ Deze studie werd geopend met de ode Krioro datra Sofie, die kort na het plotselinge overlijden van Sophie Redmond werd gepubliceerd. Voor deze veelzeggende… (more)

S.M. Kortram (Sylvia)

2014-01-01T23:59:59.000Z

169

E-Print Network 3.0 - autorijden evaluatie van Sample Search...  

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

and Evolution, Collection: Biology and Medicine ; Environmental Sciences and Ecology 3 Ad-hoc networking Tools Implementation Results Summary Implementatie en evaluatie van...

170

Comments by Julie Crenshaw Van Fleet on DOE/SEA-04, Special Environmen...  

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

Julie Crenshaw Van Fleet on DOESEA-04, Special Environmental Analysis: For Actions Taken Under U.S. Department of Energy Emergency Orders Regarding Operation of the Potomac River...

171

E-Print Network 3.0 - anthon van leeuwenhoek Sample Search Results  

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

A, van der Linden S. Case number 33: about being a famous European and suffering from gout... Ann Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary...

172

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

173

Body-assisted van der Waals interaction between excited atoms  

E-Print Network [OSTI]

We present a formula for the body-assisted van der Waals interaction potential between two atoms, one or both being prepared in an excited energy eigenstate. The presence of arbitrary arrangement for material environment is taken into account via the Green function. The resulting formula supports one of two conflicting findings recorded. The consistency of our formula is investigated by applying it for the case of two atoms in free space and comparing the resulting expression with the one found from the limiting Casimir-Polder potential between an excited atom and a small dielectric sphere.

Hassan Safari; Mohammad Reza Karimpour

2014-12-12T23:59:59.000Z

174

Women @ Energy: Kerstin Kleese van Dam | 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:YearRound-Up from theDepartment of Dept.| WEATHERIZATION5Iski WomenKerstin Kleese van Dam Women @

175

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

176

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

177

Hoofdstukken: Maak van de hoofdstukken evoluerende open documenten, waarvan met grotere regelmaat  

E-Print Network [OSTI]

adaptatie kan sneller, transparanter,goedkoper en effectiever worden verkregen. Voorbeeld: World Energy is alleen een expert reviewronde nodig en geen government review. Wanneer er SPM's worden gemaakt op basis van een bepaalde set hoofdstukken, dan vindt er pas een expert/government review van de betreffende

Haak, Hein

178

Industrial Applications of ASF+SDF Mark van den Brand,1  

E-Print Network [OSTI]

Industrial Applications of ASF+SDF Mark van den Brand,1 Arie van Deursen,2 Paul Klint,1 2 Steven companies have used the algebraic specification formalism ASF+SDF. Bank MeesPierson has specified a language address such questions in the context of the algebraic specification formalism ASF+SDF. We report on our

van Deursen, Arie

179

Louis Hartlooper Complex en USBO (onderdeel van de Universiteit Utrecht) organiseren een  

E-Print Network [OSTI]

Louis Hartlooper Complex en USBO (onderdeel van de Universiteit Utrecht) organiseren een filmreeks Bestuurs- en Organisatie- wetenschap (USBO) van de Universiteit Utrecht een korte inleiding bij iedere film. Na afloop kunnen bezoekers met hen in gesprek. Louis Hartlooper Complex & Universiteit Utrecht Het

Utrecht, Universiteit

180

Port-Hamiltonian systems: an introductory survey Arjan van der Schaft  

E-Print Network [OSTI]

structure and the Hamiltonian given by the total stored energy. Furthermore, port-Hamiltonian systems van der Schaft sistive effects are included by terminating some of these ports on energyPort-Hamiltonian systems: an introductory survey Arjan van der Schaft Abstract. The theory of port

Schaft, Arjan van der

Note: This page contains sample records for the topic "vi van dyke" 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

Robust Optimization of Oil Reservoir Flooding G.M. van Essen, M.J. Zandvliet,  

E-Print Network [OSTI]

Robust Optimization of Oil Reservoir Flooding G.M. van Essen, M.J. Zandvliet, P.M.J. Van den Hof the reservoir to the subsurface. The injection wells inject water into the oil reservoir with the aim to push reservoirs, the oil-water front does not travel uniformly towards the pro- duction wells, but is usually

Van den Hof, Paul

182

Mapping quantum-classical Liouville equation: Projectors and trajectories Aaron Kelly, Ramses van Zon, Jeremy Schofield, and Raymond Kapral  

E-Print Network [OSTI]

Mapping quantum-classical Liouville equation: Projectors and trajectories Aaron Kelly, Ramses van: Projectors and trajectories Aaron Kelly,1,2,a) Ramses van Zon,1,3,b) Jeremy Schofield,1,c) and Raymond Kapral

Schofield, Jeremy

183

Reputation Matters Paula Dyke, ABC, CRMP  

E-Print Network [OSTI]

it well? Internationally ­ ranked by Reputation Institute ·BMW ·Sony ·The Walt Disney Company ·Daimler by Marketing Magazine ·Heinz ·Google ·Kellogg ·Sony ·Kraft ·Tim Hortons ·Campbell ·Canadian Tire ·Subway

Oyet, Alwell

184

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

185

Introduction > Agent Communication > Ubismart > Conclusion 1/25 Jurriaan van Diggelen Utrecht University/TNO AAMAS May 14th 2008  

E-Print Network [OSTI]

Introduction > Agent Communication > Ubismart > Conclusion 1/25 Jurriaan van Diggelen Utrecht Diggelen, R.J. Beun, R.M. van Eijk, P.J. Werkhoven Utrecht University, the Netherlands #12;Introduction > Agent Communication > Ubismart > Conclusion 2/25 Jurriaan van Diggelen Utrecht University/TNO AAMAS May

Diggelen, Jurriaan van

186

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

187

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

188

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

189

Heterostructures based on inorganic and organic van der Waals systems  

SciTech Connect (OSTI)

The two-dimensional limit of layered materials has recently been realized through the use of van der Waals (vdW) heterostructures composed of weakly interacting layers. In this paper, we describe two different classes of vdW heterostructures: inorganic vdW heterostructures prepared by co-lamination and restacking; and organic-inorganic hetero-epitaxy created by physical vapor deposition of organic molecule crystals on an inorganic vdW substrate. Both types of heterostructures exhibit atomically clean vdW interfaces. Employing such vdW heterostructures, we have demonstrated various novel devices, including graphene/hexagonal boron nitride (hBN) and MoS{sub 2} heterostructures for memory devices; graphene/MoS{sub 2}/WSe{sub 2}/graphene vertical p-n junctions for photovoltaic devices, and organic crystals on hBN with graphene electrodes for high-performance transistors.

Lee, Gwan-Hyoung [Department of Materials Science and Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of); Lee, Chul-Ho [KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 136-701 (Korea, Republic of); Zande, Arend M. van der [Energy Frontier Research Center (EFRC), Columbia University, New York, New York 10027 (United States); Han, Minyong [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States); Cui, Xu; Arefe, Ghidewon; Hone, James [Department of Mechanical Engineering, Columbia University, New York, New York 10027 (United States); Nuckolls, Colin [Department of Chemistry, Columbia University, New York, New York 10027 (United States); Heinz, Tony F. [Department of Electrical Engineering, Columbia University, New York, New York 10027 (United States); Department of Physics, Columbia University, New York, New York 10027 (United States); Kim, Philip, E-mail: pk2015@columbia.edu [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States); Department of Physics, Columbia University, New York, New York 10027 (United States)

2014-09-01T23:59:59.000Z

190

Thirty-Six Month Evaluation of UPS Diesel Hybrid-Electric Delivery Vans  

SciTech Connect (OSTI)

This evaluation compared six hybrids and six standard diesels in UPS facilities in Phoenix, Arizona. Dispatch and maintenance practices are the same at both facilities. GPS logging, fueling, and maintenance records are used to evaluate the performance of these step delivery vans. The hybrids' average monthly mileage rate was 18% less than the diesel vans. The hybrids consistently were driven a fewer number of miles throughout the evaluation period. The hybrids idled more and operating at slower speeds than the diesels, and the diesels spent slightly more time operating at greater speeds, accounting for much of the hybrids fewer monthly miles. The average fuel economy for the hybrid vans is 13.0 mpg, 23% greater than the diesel vans 10.6 mpg. Total hybrid maintenance cost/mile of $0.141 was 9% more than the $0.130 for the diesel vans. Propulsion-related maintenance cost/mile of $0.037 for the hybrid vans was 25% more than the $0.029 for the diesel vans. Neither difference was found to be statistically significant. The hybrid group had a cumulative average of 96.3% uptime, less than the diesel group's 99.0% uptime. The hybrids experienced troubleshooting and recalibration issues related to prototype components that were primarily responsible for the lower uptime figures.

Lammert, M.; Walkowicz, K.

2012-03-01T23:59:59.000Z

191

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.

192

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

193

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

194

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

195

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

196

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

197

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.

198

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

199

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

200

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.

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


201

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

202

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

203

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

204

Introduction > Motivation > Approach > UbiSmart > Conclusion 1/21 Jurriaan van Diggelen Utrecht University/TNO AmI.d 17 September 2007  

E-Print Network [OSTI]

Introduction > Motivation > Approach > UbiSmart > Conclusion 1/21 Jurriaan van Diggelen Utrecht Jurriaan van Diggelen, Robbert-Jan Beun, Rogier M. van Eijk, Peter J. Werkhoven Utrecht University, TNO/21 Jurriaan van Diggelen Utrecht University/TNO AmI.d 17 September 2007 Utrecht University TNO ICIS ESA Who am

Diggelen, Jurriaan van

205

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

206

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

207

Minimalism and art-cinema narration in Gus Van Sant's Gerry, Elephant, and Last Days.  

E-Print Network [OSTI]

??Though Gus Van Sanfs best known films-My Own Private Idaho and Good Will Hunting-have earned critical acclaim and commercial success, the focus of this thesis… (more)

Alberhasky, Matthew John

2006-01-01T23:59:59.000Z

208

Hydrogen adsorption on graphene and coronene: A van der Waals density functional study.  

E-Print Network [OSTI]

??This thesis investigates hydrogen adsorption on graphene and coronene within the framework of density functional theory. The new nonlocal van der Waals density functional (vdW-DF)… (more)

Varenius, Eskil

2011-01-01T23:59:59.000Z

209

Replanning in a Resource-based Framework ? Roman van der Krogt, Andr Bos, and Cees Witteveen  

E-Print Network [OSTI]

Replanning in a Resource-based Framework ? Roman van der Krogt, André Bos, and Cees Witteveen Delft on Planning. #12; set of possible (pre-compiled) plan repairs, but can also come from other agents that #16

Kuzmanov, Georgi

210

Commuted Piano Synthesis Julius O. Smith III and Scott A. Van Duyne  

E-Print Network [OSTI]

Commuted Piano Synthesis Julius O. Smith III and Scott A. Van Duyne Center for Computer Research piano synthesis" algorithm is described, based on a simpli ed acous- tic model of the piano. The model

Smith III, Julius Orion

211

Dispersion-Induced Chromatographic Waves Steven L. Bryant,*, Clint Dawson, and Cornelius J. van Duijn  

E-Print Network [OSTI]

Dispersion-Induced Chromatographic Waves Steven L. Bryant,*, Clint Dawson, and Cornelius J. van Remarks by S. Bryant. Reactive trans- port through porous media is but one of many areas of science

Bryant, Steven

212

E-Print Network 3.0 - als gevolg van Sample Search Results  

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

30 Prof. Dr. Hans von Storch Institut fr Kstenforschung, GKSS Forschungszentrum, Geesthacht Summary: deze eeuw de hoogte van een stormvloed wel 2 tot 5 dm hoger worden. Hoe als...

213

Michael Van Vliet and Amy Todd, `02 Santo Domingo, Dominican Republic  

E-Print Network [OSTI]

Michael Van Vliet and Amy Todd, `02 Santo Domingo, Dominican Republic In July of 2001, Amy Todd in the capitol of the Dominican Republic, Santo Domingo, we were immediately overcome and shocked by the poverty

214

Graphene on boron-nitride: Moiré pattern in the van der Waals energy  

SciTech Connect (OSTI)

The spatial dependence of the van der Waals (vdW) energy between graphene and hexagonal boron-nitride (h-BN) is investigated using atomistic simulations. The van der Waals energy between graphene and h-BN shows a hexagonal superlattice structure identical to the observed Moiré pattern in the local density of states, which depends on the lattice mismatch and misorientation angle between graphene and h-BN. Our results provide atomistic features of the weak van der Waals interaction between graphene and BN which are in agreement with experiment and provide an analytical expression for the size of the spatial variation of the weak van der Waals interaction. We also found that the A-B-lattice symmetry of graphene is broken along the armchair direction.

Neek-Amal, M. [Department of Physics, University of Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen (Belgium); Department of Physics, Shahid Rajaee University, Lavizan, Tehran 16788 (Iran, Islamic Republic of); Peeters, F. M. [Department of Physics, University of Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen (Belgium)

2014-01-27T23:59:59.000Z

215

Urban Aerosol Impacts on Downwind Convective Storms SUSAN C. VAN DEN HEEVER AND WILLIAM R. COTTON  

E-Print Network [OSTI]

Urban Aerosol Impacts on Downwind Convective Storms SUSAN C. VAN DEN HEEVER AND WILLIAM R. COTTON. 2004; Givati and Rosenfeld 2004; Molders and Olson 2004; Jirak and Cotton 2006); 2) increased surface

Collett Jr., Jeffrey L.

216

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

217

Van der Waals forces from first principles for periodic systems: Application to graphene-water interactions  

E-Print Network [OSTI]

We extend the method of Silvestrelli [P. L. Silvestrelli, J. Chem. Phys. 139, 054106 (2013)] to approximate long-range van der Waals interactions at the density functional theory level based on maximally localized Wannier functions combined with the quantum harmonic oscillator model, to periodic systems. Applying this scheme to study London dispersion forces between graphene and water layers, we demonstrate that collective many-body effects beyond simple additive pair-wise interactions are essential to accurately describe van der Waals forces.

Pouya Partovi-Azar; T. D. Kühne

2015-04-17T23:59:59.000Z

218

Van der Waals forces from first principles for periodic systems: Application to graphene-water interactions  

E-Print Network [OSTI]

We extend the method of Silvestrelli [P. L. Silvestrelli, J. Chem. Phys. 139, 054106 (2013)] to approximate long-range van der Waals interactions at the density functional theory level based on maximally localized Wannier functions combined with the quantum harmonic oscillator model, to periodic systems. Applying this scheme to study London dispersion forces between graphene and water layers, we demonstrate that collective many-body effects beyond simple additive pair-wise interactions are essential to accurately describe van der Waals forces.

Partovi-Azar, Pouya

2015-01-01T23:59:59.000Z

219

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

220

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

Note: This page contains sample records for the topic "vi van dyke" 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

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

222

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

223

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

224

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

225

One-dimensional Mott localization of quantum vortices in Josephson-junction arrays A. van Oudenaarden, B. van Leeuwen, M. P. M. Robbens, and J. E. Mooij  

E-Print Network [OSTI]

One-dimensional Mott localization of quantum vortices in Josephson-junction arrays A. van long and narrow arrays of small Josephson junctions is studied experimentally. We investigate for electrons and a superfluid phase for bosons. One- dimensional Josephson-junction arrays are very suitable

van Oudenaarden, Alexander

226

Publications 1. T.H.J.J. van der Hagen, H. van Dam, J.E. Hoogenboom, E.B.J. Kleiss, W.H.M. Nissen  

E-Print Network [OSTI]

surveillance of a BWR, Book of Abstracts Informal Meeting On Reactor Noise IMORN-20, October 12-14, 1988 water reactor, Nuclear Europe 9/10, (1989), 55. 9. T.H.J.J. van der Hagen, Stability monitoring of the BWR water level on reactor noise, Book of Abstracts Informal Meeting On Reactor Noise IMORN-22, June

227

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

228

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

229

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

230

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

231

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

232

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

233

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

234

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

235

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

236

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

237

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

238

Van der Waals and Casimir interactions between atoms and carbon nanotubes  

E-Print Network [OSTI]

The van der Waals and Casimir interactions of a hydrogen atom (molecule) with a single-walled and a multiwalled carbon nanotubes are compared. It is shown that the macroscopic concept of graphite dielectric permittivity is already applicable for nanotubes with only two or three walls. The absorption of hydrogen atoms by a nanotube at separations below one nanometer is considered. The lateral force due to exchange repulsion moves the atom to a position above the cell center, where it is absorbed by the nanotube because the repulsive force cannot balance the van der Waals attraction.

G. L. Klimchitskaya; E. V. Blagov; V. M. Mostepanenko

2008-02-09T23:59:59.000Z

239

The grounding of the scientific endeavor: Armstrong's inference to the best explanation and Van Fraassen's concept of symmetry  

E-Print Network [OSTI]

of the Realist view of science has been most ably defended by David Armstrong. The concept of Symmetry, as part of the Constructive Empiricist view of science, is championed by Bas van Fraassen. If van Fraassen's Symmetry Principles are to become the rules which...

DeGroot, David Arie

1996-01-01T23:59:59.000Z

240

Naam: prof. dr. R.G.A. Boot Leeropdracht Aansturing en gebruik van onderzoek t.b.v duurzaam bosbeheer  

E-Print Network [OSTI]

Naam: prof. dr. R.G.A. Boot Profiel Leeropdracht Aansturing en gebruik van onderzoek t.b.v duurzaam Contactgegevens Telefoon 030-253 7384 / 0317-481 417 E-mail R.G.A.Boot@uu.nl Onderzoek De betekenis van tropische

Utrecht, Universiteit

Note: This page contains sample records for the topic "vi van dyke" 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

Hoe veilig is jouw identiteit op Facebook? Onderzoek naar de factoren van invloed op risico-informatie zoeken en het  

E-Print Network [OSTI]

Hoe veilig is jouw identiteit op Facebook? Onderzoek naar de factoren van invloed op risico-informatie zoeken en het nemen van zelfbeschermende maatregelen op Facebook Sean-Patrick Kats - s0180564 Enschede: Dr. Jan Gutteling Dr. ir. Peter de Vries #12;2 Samenvatting Facebook kan cybercriminelen de

Vellekoop, Michel

242

DiVaDiVa is een Digitale nieuwsbrief van de vier Vakbonden vertegenwoordigd op de TU/e  

E-Print Network [OSTI]

faculteit TM · Rouwprotocol · Heroverwegingsbesluit UFO · FPU-opgave aanvragen via " Mijn.v. bij overlijden). Binnenkort kunt u de tekst vinden op de site van de TU/e. Heroverwegingsbesluit UFO Als u het niet eens bent met de UFO- indeling van uw functie, bijv. omdat taken niet meegewogen zijn

Franssen, Michael

243

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

244

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

245

Uranium(VI) Diffusion in Low-Permeability Subsurface Materials. | 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 SecurityTensile Strain Switched Ferromagnetism inS-4500II Field Emission SEM withSecurityUranium(VI) Diffusion in

246

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)

247

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

248

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)

249

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, The 2011 Mw 7.1 Van (Eastern Turkey) Earthquake -1  

E-Print Network [OSTI]

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, The 2011 Mw 7.1 Van (Eastern Turkey, 2012, 5:45pm D R A F T #12;X - 2 ELLIOTT ET AL.: 2011 VAN EARTHQUAKE, EASTERN TURKEY moment and source.: 2011 VAN EARTHQUAKE, EASTERN TURKEY X - 3 Interferograms from the ENVISAT satellite were derived from

Cambridge, University of

250

Introduction > Ontologies > Policies > MECA > Conclusion 1/44 Jurriaan van Diggelen Utrecht University/TNO IHMC Colloquium September 10th 2008  

E-Print Network [OSTI]

Introduction > Ontologies > Policies > MECA > Conclusion 1/44 Jurriaan van Diggelen Utrecht using KAoS Policies Jurriaan van Diggelen Utrecht University, the Netherlands #12;Introduction > Ontologies > Policies > MECA > Conclusion 2/44 Jurriaan van Diggelen Utrecht University/TNO IHMC Colloquium

Diggelen, Jurriaan van

251

Introduction > Petri nets > ISM > Analysis > Conclusion 1/30 Jurriaan van Diggelen Utrecht University/TNO TAMODIA 2008 September 25th 2008  

E-Print Network [OSTI]

Introduction > Petri nets > ISM > Analysis > Conclusion 1/30 Jurriaan van Diggelen Utrecht Management and Workflow Modelling Jurriaan van Diggelen Utrecht University, the Netherlands #12;Introduction > Petri nets > ISM > Analysis > Conclusion 2/30 Jurriaan van Diggelen Utrecht University/TNO TAMODIA 2008

Diggelen, Jurriaan van

252

Introduction > Team models > KAoS > MECA > Conclusion 1/24 Jurriaan van Diggelen Utrecht University/TNO Rich cognitive models 16 January 2009  

E-Print Network [OSTI]

Introduction > Team models > KAoS > MECA > Conclusion 1/24 Jurriaan van Diggelen Utrecht UniversityS Policies Jurriaan van Diggelen Utrecht University, the Netherlands #12;Introduction > Team models > KAoS > MECA > Conclusion 2/24 Jurriaan van Diggelen Utrecht University/TNO Rich cognitive models 16 January

Diggelen, Jurriaan van

253

Electronic structure of the Si(111):GaSe van der Waals-like surface termination  

E-Print Network [OSTI]

Electronic structure of the Si(111):GaSe van der Waals-like surface termination Reiner Rudolph-like surface termination has been determined by angle-resolved photoelectron spectroscopy using photons. This explains both the absence of a surface core-level shift in Si 2p photoelectron spectra of the terminated

Olmstead, Marjorie

254

Missing working memory deficit in dyslexia: children writing from memory Erlijn van Genuchtena,b  

E-Print Network [OSTI]

Missing working memory deficit in dyslexia: children writing from memory Erlijn van Genuchtena,b (e of writing processes of children with dyslexia, in order to examine the relationship between WM and writing. An experiment was used in which children with dyslexia, and chronological age-matched and reading age

Cheng, Peter

255

The Java Machine Learning Library Thomas Abeel, Yvan Saeys and Yves Van de Peer  

E-Print Network [OSTI]

The Java Machine Learning Library Thomas Abeel, Yvan Saeys and Yves Van de Peer Department of Plant.abeel@psb.ugent.be What is Java-ML? Motivation Code & Documentation Applications 1. Machine learning techniques: · 18 style, no GUI 6. Open Source · Lack of a (good) machine learning library: · Reference implementations

Gent, Universiteit

256

Software Service Engineering: Tenets and Challenges Willem-Jan van den Heuvel, Olaf Zimmermann2  

E-Print Network [OSTI]

Software Service Engineering: Tenets and Challenges Willem-Jan van den Heuvel, Olaf Zimmermann2 and maintenance of SOA systems. In particular, we introduce software service engineering as an emerging discipline use of SOA, and assume that to engineer services they can simply apply principles and techniques from

Zdun, Uwe

257

Modeling Privacy for Off-line RFID Systems Flavio D. Garcia and Peter van Rossum  

E-Print Network [OSTI]

in stores to enable RFID based cash registers), the privacy problems could be solved by sending the killModeling Privacy for Off-line RFID Systems Flavio D. Garcia and Peter van Rossum Institute applications. The widespread use of RFID has raised privacy concerns. Since most RFID tags will send a unique

Garcia, Flavio D.

258

Resource Augmentation in Load Balancing Yossi Azar y Leah Epstein z Rob van Stee x  

E-Print Network [OSTI]

, 2000 Abstract We consider load balancing in the following setting. The on-line algorithm is allowed or faster machines has been studied. We consider the following load balancing problem. Jobs arrive onResource Augmentation in Load Balancing #3; Yossi Azar y Leah Epstein z Rob van Stee x June 25

Epstein, Leah

259

Condition based maintenance model for a production deteriorating Phuc Do Van and Christophe Berenguer  

E-Print Network [OSTI]

significantly and the system might not be able to cope with demand. In many preventive maintenance policiesCondition based maintenance model for a production deteriorating system Phuc Do Van and Christophe both maintenance cost and production capacity aspects for a single unit production system whose

Boyer, Edmond

260

Lithium diffusion mechanisms in layered intercalation compounds A. Van der Ven*  

E-Print Network [OSTI]

Lithium diffusion mechanisms in layered intercalation compounds A. Van der Ven* , G. Ceder; accepted 28 December 2000 Abstract We investigate the mechanisms of lithium diffusion in layered intercalation compounds from ®rst-principles. We focus on LixCoO2 and ®nd that lithium diffusion

Ceder, Gerbrand

Note: This page contains sample records for the topic "vi van dyke" 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

Delft Hydraulic's Large Wind-Wave Flume Paul van Vliet 1  

E-Print Network [OSTI]

499 Delft Hydraulic's Large Wind-Wave Flume Paul van Vliet 1 , Frank Hering 2 , and Bernd J¨ahne 2,3 1 Waterloopkundig Laboratorium, Delft Hydraulics Laboratory Rotterdamseweg 185, NL-2692 HD Delft in the seventies, Delft Hydraulics large wind wave flume was totally overhauled to fit the needs of scientists

Jaehne, Bernd

262

VAN DER WAALS DISPERSION FORCE CONTRIBUTION TO THE INTERFACIAL FREE ENERGY  

E-Print Network [OSTI]

VAN DER WAALS DISPERSION FORCE CONTRIBUTION TO THE INTERFACIAL FREE ENERGY OF NEMATIC LIQUID energy of a nematic liquid crystal and the interfacial free energy of a nematic on a glass substrate. Introduction. -- The surface free energy of a nematic liquid crystal and the interfacial free energy of nematic

Paris-Sud XI, Université de

263

Safety and Reliability Bedford & van Gelder (eds) 2003 Swets & Zeitlinger, Lisse, ISBN 90 5809 551 7  

E-Print Network [OSTI]

Safety and Reliability ­ Bedford & van Gelder (eds) © 2003 Swets & Zeitlinger, Lisse, ISBN 90 5809 551 7 1321 Causal modeling for integrated safety at airports A.L.C. Roelen & R. Wever National Aerospace Laboratory, NLR A.R. Hale & L.H.J. Goossens Delft University of Technology, Safety Science Group R

Lopuhaä, H.P.

264

SOLAR MODELLING OF COMMERCIAL BUILDINGS Robert Amor, Michael Donn and Ian van der Werff  

E-Print Network [OSTI]

SOLAR MODELLING OF COMMERCIAL BUILDINGS Robert Amor, Michael Donn and Ian van der Werff Energy of modelling the thermal response of buildings. There have been two major obstacles precluding these programs of the research was: "to develop two energy thermal simulation programs as design tools for New Zealand buildings

Amor, Robert

265

Neural network tool for rapid recovery of plasma topology V. Tribaldos and B. Ph. van Milligen  

E-Print Network [OSTI]

Neural network tool for rapid recovery of plasma topology V. Tribaldos and B. Ph. van Milligen of neural networks as fitting tools is described; examples of the method for a D-shaped tokamak with an X and general conclusions are drawn. II. USING NEURAL NETWORKS AS FITTING TOOLS The major problem of fitting

van Milligen, Boudewijn

266

Rank Aggregation: Together We're Strong Frans Schalekamp Anke van Zuylen  

E-Print Network [OSTI]

Rank Aggregation: Together We're Strong Frans Schalekamp Anke van Zuylen Abstract We consider the problem of finding a ranking of a set of elements that is "closest to" a given set of input rank- ings to the input rankings, where the Kendall-tau distance is defined as the sum over all input rankings

Schalekamp, Frans

267

Prof Colin Harwood, University of Newcastle Prof Jan Maarten van Dijl, University of Groningen  

E-Print Network [OSTI]

, Science and Technology, Japan Prof Dr Paul Van Cauwenberge, Rector of Ghent University Dr Hideki Fukuda and Technology, Japan; The Ministry of Foreign Affairs of Japan; The Ministry of Economy, Trade and Industry University [Room 314] 13:30 - 18:00 Bacillus research is one of the leading activities in biotechnology

Banbara, Mutsunori

268

Physics of the granite sphere fountain Jacco H. Snoeijer and Ko van der Weele  

E-Print Network [OSTI]

Physics of the granite sphere fountain Jacco H. Snoeijer and Ko van der Weele Citation: American: Fri, 24 Oct 2014 14:40:51 #12;Physics of the granite sphere fountain Jacco H. Snoeijer Physics in the "kugel fountain" where a granite sphere, sometimes weighing over a ton, is kept aloft by a thin film

Snoeijer, Jacco

269

Por Hugh Rudnick Van De Wyngard, Profesor Titular Pontificia Universidad Catlica de  

E-Print Network [OSTI]

Capítulo 4 ENERGÍA EÓLICA Por Hugh Rudnick Van De Wyngard, Profesor Titular Pontificia Universidad análisis económico. La energía eólica se origina del movimiento de las masas de aire, es decir, el viento circulación de aire. Desde el punto de vista de la energía eólica, la característica más importante del viento

Dixon, Juan

270

Automatic Reformulation of Children's Search Queries Maarten van Kalsbeek, Joost de Wit, Dolf Trieschnigg,  

E-Print Network [OSTI]

Terms Algorithms, Human Factors, Design Keywords Automatic Query Expansion, Search Behavior, 1 children may make. Most of the search engines offer only the possibility to enter a Boolean queryAutomatic Reformulation of Children's Search Queries Maarten van Kalsbeek, Joost de Wit, Dolf

Hiemstra, Djoerd

271

6 Multicomponent Density-Functional Theory R. van Leeuwen and E.K.U. Gross  

E-Print Network [OSTI]

6 Multicomponent Density-Functional Theory R. van Leeuwen and E.K.U. Gross 6.1 Introduction fields. Our goal is to set up a time-dependent multicomponent density-functional theory (TDMCDFT.K.U. Gross: Multicomponent Density-Functional Theory, Lect. Notes Phys. 706, 93­106 (2006) DOI 10

Gross, E.K.U.

272

A Design Model for Open Distributed Processing Systems Marten van Sinderen1  

E-Print Network [OSTI]

A Design Model for Open Distributed Processing Systems Marten van Sinderen1 , Luís Ferreira Pires1 these standards and consequently may decrease their price. The design and implementation of a distributed system, pires, vissers, katoen}@cs.utwente.nl Abstract This paper proposes design concepts that allow

van Sinderen, Marten

273

A Design Model for Open Distributed Processing Systems Marten van Sinderen1  

E-Print Network [OSTI]

A Design Model for Open Distributed Processing Systems Marten van Sinderen1 , Luís Ferreira Pires1 and consequently may decrease their price. The design and implementation of a distributed system is a complex, pires, vissers, katoen}@cs.utwente.nl Abstract This paper proposes design concepts that allow

Pires, Luís Ferreira

274

Recent developments in pyridine nucleotide regeneration Wilfred A van der Donky  

E-Print Network [OSTI]

Recent developments in pyridine nucleotide regeneration Wilfred A van der DonkÃ?y and Huimin Zhaoz dinucleotide NADP nicotinamide adenine dinucleotide phosphate STH soluble pyridine nucleotide transhydrolase of the enzymes in this class require pyridine nucleotide cofactors for catalysis. Given the cost of NAD

Zhao, Huimin

275

SAsSy --Scrutable Autonomous Systems Nava Tintarev, Roman Kutlak, Nir Oren, Kees Van Deemter  

E-Print Network [OSTI]

SAsSy -- Scrutable Autonomous Systems Nava Tintarev, Roman Kutlak, Nir Oren, Kees Van Deemter Matt.tintarev@abdn.ac.uk Abstract. An autonomous system consists of physical or virtual systems that can perform tasks without continuous human guidance. Autonomous systems are becoming increasingly ubiquitous, rang- ing from unmanned

van Deemter, Kees

276

A review of early blight of potato J E van der Waals1,2  

E-Print Network [OSTI]

A review of early blight of potato J E van der Waals1,2 , L Korsten2 & T A S Aveling2 1 Gold Fields. A review of early blight of potatoes. African Plant Protection 7(2): 00­00. Early blight of potatoes, causal agent Alternaria solani, causes major yield losses in most potato growing areas of the world. Leaf

277

The Assessment of Evidence in the Discovery of a Higgs Boson David A. van Dyk*  

E-Print Network [OSTI]

The Assessment of Evidence in the Discovery of a Higgs Boson David A. van Dyk* Imperial College London, United Kingdom dvandyk@imperial.ac.uk The 2012-2013 discovery of a Higgs boson filled the last in a 40-year search that culminated in the discovery of a Higgs boson. This talk reviews these statistical

Wolfe, Patrick J.

278

Adapting Game Technology to Support Individual and Organizational Learning Emily Oh and Andr van der Hoek  

E-Print Network [OSTI]

Adapting Game Technology to Support Individual and Organizational Learning Emily Oh and André van the software process in its fullest. Par- ticularly in the context of individual and organizational learning that facilitates individual and organizational learning. The environment supports individual learning by allowing

van der Hoek, André

279

Molecular Dynamics Simulations of Laser Induced Incandescence Dr. Adri van Duin  

E-Print Network [OSTI]

Molecular Dynamics Simulations of Laser Induced Incandescence (LII) Dr. Adri van Duin Associate of Engineering. Laser Induced Incandescence (LII) is a popular method to estimate the properties of soot. Molecular Dynamics Simulations of Laser-Induced Incandescence of Soot Using an Extended ReaxFF Reactive

Bjørnstad, Ottar Nordal

280

The loop compiler for Java and JML Joachim van den Berg, Bart Jacobs  

E-Print Network [OSTI]

engineering process. Within this project a dynamic logic for JavaCard, Java's subset for smart cardThe loop compiler for Java and JML Joachim van den Berg, Bart Jacobs Computing Science Institute into their semantics in higher order logic. It serves as a front-end to a the- orem prover in which the actual veri#12

Jacobs, Bart

Note: This page contains sample records for the topic "vi van dyke" 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

Compiling Language Definitions: The ASF+SDF M. G. J. VAN DEN BRAND  

E-Print Network [OSTI]

Compiling Language Definitions: The ASF+SDF Compiler M. G. J. VAN DEN BRAND CWI and Vrije Universiteit J. HEERING CWI P. KLINT CWI and University of Amsterdam and P. A. OLIVIER CWI The ASF+SDF Meta of the rewrite rule implementation. The ASF+SDF rewrite rule compiler generates C code, thus taking advantage

Klint, Paul

282

Precipitation of relativistic electrons of the Van Allen belts into the proton aurora  

SciTech Connect (OSTI)

The Van Allen electron belts consist of two regions encircling the earth in which relativistic electrons are trapped in the earth's magnetic field. Populations of relativistic electrons in the Van Allen belts vary greatly with geomagnetic disturbance and they are a major source of damage to space vehicles. In order to know when and by how much these populations of relativistic electrons increase, it is important to elucidate not only the cause of acceleration of relativistic electrons but also the cause of their loss from the Van Allen belts. Here we show the first evidence that left-hand polarized electromagnetic ion cyclotron (EMIC) plasma waves can cause the loss of relativistic electrons into the atmosphere, on the basis of results of an excellent set of ground and satellite observations showing coincident precipitation of ions with energies of tens of keV and of relativistic electrons into an isolated proton aurora. The proton aurora was produced by precipitation of ions with energies of tens of keV due to EMIC waves near the plasma pause, which is a manifestation of wave-particle interactions. These observations clarify that ions with energies of tens of keV affect the evolution of relativistic electrons in the Van Allen belts via parasitic resonance with EMIC waves, an effect that was first theoretically predicted in the early 1970's.

Jordanova, Vania K [Los Alamos National Laboratory; Miyoshi, Y [NAGOYA UNIV; Sakaguchi, K [NAGOYA UNIV; Shiokawa, K [NAGOYA UNIV; Evans, D S [SEC/NOAA; Albert, Jay [AFRL; Connors, M [UNIV OF ATHABASCA

2008-01-01T23:59:59.000Z

283

Van der Vorst, H.A. Computational Science Curriculum in Utrecht  

E-Print Network [OSTI]

Van der Vorst, H.A. Computational Science Curriculum in Utrecht Abstract In 1993 Utrecht University of about 18 years old. 2. The Circumstances in Utrecht The main departments that are involved in Computational Science at Utrecht University are: ffl Department of Mathematics, with chairs in Algebra, Analysis

Vorst, Henk A.

284

Combining Blind Equalization with Constant Modulus Properties Alle-Jan van der Veen and Antonio Trindade  

E-Print Network [OSTI]

Combining Blind Equalization with Constant Modulus Properties Alle-Jan van der Veen and Ant, The Netherlands Abstract This paper presents an approach to multi-user blind space- time equalizationexploiting that asks for both a blind equaliza- tion and a blind source separation based on the modulation properties

van der Veen, Alle-Jan

285

Hybrid Fractal Zerotree Wavelet Image Taekon Kim, Robert E. Van Dyck, and David J. Miller  

E-Print Network [OSTI]

1 Hybrid Fractal Zerotree Wavelet Image Coding Taekon Kim, Robert E. Van Dyck, and David J. Miller the scaling factor aR the encoding bit rate bR a rate slightly less than the encoding rate fR the fractal. of Tables Four tables No. of Figures Eight figures Keywords hybrid fractal coding, zerotree, image

286

LPCVD SILICON NITRIDE-ON-SILICON SPACER TECHNOLOGY H. W. van Zeijl, L.K. Nanver  

E-Print Network [OSTI]

of obtaining self-aligned sub- lithographic dimensions. In many processes were spacers are applied to separate-etching affects the dimensions of the spacer which could lead to a lack of control over the spacer-related deviceLPCVD SILICON NITRIDE-ON-SILICON SPACER TECHNOLOGY H. W. van Zeijl, L.K. Nanver DIMES Delft

Technische Universiteit Delft

287

Instability of time-dependent wind-driven ocean gyres Paul C. F. van der Vaart  

E-Print Network [OSTI]

Instability of time-dependent wind-driven ocean gyres Paul C. F. van der Vaart Institute for Marine, Delft, the Netherlands Daniel Calvete Department Fisica Aplicada, UPC, Barcelona, Spain Henk A September 2002 The wind-driven ocean circulation at midlatitudes is susceptible to several types

Schuttelaars, Henk

288

Beyond frontier exploration Arnoud Visser, Xingrui-Ji, Merlijn van Ittersum,  

E-Print Network [OSTI]

Beyond frontier exploration Arnoud Visser, Xingrui-Ji, Merlijn van Ittersum, Luis A. Gonz interesting locations can be present where the exploration can be continued, referred as exploration frontiers. Typically, a greedy algo- rithm is used for the decision which frontier to explore next. Such a greedy al

Visser, Arnoud

289

On CSP and the Algebraic Theory of Effects Rob van Glabbeek and Gordon Plotkin  

E-Print Network [OSTI]

On CSP and the Algebraic Theory of Effects Rob van Glabbeek and Gordon Plotkin Abstract We consider CSP from the point of view of the algebraic theory of effects, which classifies operations as effect in terms of two versions of the stable failures model of CSP, one more general than the other

Plotkin, Gordon

290

Laser Excitation of a Fracture Source for Elastic Waves Thomas E. Blum* and Kasper van Wijk  

E-Print Network [OSTI]

Laser Excitation of a Fracture Source for Elastic Waves Thomas E. Blum* and Kasper van Wijk a transparent sample by focusing laser light directly onto this fracture. The associated displacement field, measured by a laser interferometer, has pronounced waves that are diffracted at the fracture tips. We

Snieder, Roel

291

L.van BEETHOVEN : Quatuor n10 en Mi bmol majeur, Op.74 Poco Adagio -Allegro -  

E-Print Network [OSTI]

L.van BEETHOVEN : Quatuor n°10 en Mi bémol majeur, Op.74 Poco Adagio - Allegro - Adagio ma non con variazioni- Allegro Après le coup de tonnerre que représentait l'achèvement des trois quatuors à apportent une tension qui se fond dans un grand crescendo menant à l'Allegro. Trois accords joyeux pour un

Mazliak, Laurent

292

Laureaten PRINS BERNHARD BEURZEN t/m call 2010/2011 Jaar Naam Land van  

E-Print Network [OSTI]

the dialogue Brazil - Portugal Dhr. Javier Lordemann Bolivia Economie "The Bolivian Energy-mix Policy Scenarios Mobilisation within the Landless Rural Workers's Movement in Brazil. Mw Iris van Oort Nederland Culturele" Dhr. Luis Alejandro Builes Jaramillo Colombia Energy resources Prospective evaluation of environmental

Utrecht, Universiteit

293

COPYRIGHT NOTICE: Bernd Heidergott, Geert Jan Olsder, & Jacob van der Woude  

E-Print Network [OSTI]

COPYRIGHT NOTICE: Bernd Heidergott, Geert Jan Olsder, & Jacob van der Woude: Max Plus at Work email to: permissions@pupress.princeton.edu #12;Chapter One Max-Plus Algebra In the previous chapter we described max-plus algebra in an informal way. The present chapter contains a more rigorous treatment of max

Landweber, Laura

294

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

295

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

296

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

297

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

298

Landscape fragmentation and ice storm damage in eastern ontario forests J. Pasher and D.J. King*  

E-Print Network [OSTI]

1998). Due to interactions amongst biological and physiographic factors, damage and mortality, such as wind- storms and fire, which have return times of 100­ 1000 years (Van Dyke 1999). Large-scale ice

299

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

300

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

Note: This page contains sample records for the topic "vi van dyke" 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

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.

302

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

303

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

304

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

305

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.

306

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

307

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

308

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

309

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

310

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

311

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

312

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

313

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

314

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

315

Bulk chemicals from biomass Jacco van Haveren, Agrotechnology and Food Innovations B.V., Wageningen, The Netherlands  

E-Print Network [OSTI]

41 Review Bulk chemicals from biomass Jacco van Haveren, Agrotechnology and Food Innovations B production, and available biomass conversion technologies, biomass-based routes are expected to make and -caprolactam. Technologies involving direct isolation of aromatic building blocks from biomass

Grossmann, Ignacio E.

316

A review of "Selected Writings on Dutch Paintings: Rembrandt, Van Beke, Vermeer and Others." by Albert Blankert  

E-Print Network [OSTI]

). Using careful reading of van Hoogstraten as well as Philips Angel and Junius as evidence, she argues instead that the Dutch did not prize painterly looseness of brushwork as dexterity but rather esteemed refinements and variety by fijnmalers, especially...

Miya Tokumitsu

2006-01-01T23:59:59.000Z

317

Charge Density Waves in Exfoliated Films of van der Waals Materials: Evolution of Raman Spectrum in TiSe2  

E-Print Network [OSTI]

Charge Density Waves in Exfoliated Films of van der Waals Materials: Evolution of Raman Spectrum graphene-like mechanical exfoliation of TiSe2 crystals to prepare a set of films with different thicknesses

318

Studies of multichannel rotational predissociation of Ar–H2 van der Waals molecule by the complexcoordinate coupledchannel formalism  

E-Print Network [OSTI]

van der Waals molecules. Calculations are performed using several realistic anisotropic potentials obtained recently by experiments, including Lennard?Jones (LJ), Buckingham–Corner (BC) type potentials, as well as the semiempirical potential of Tang...

Chu, Shih-I; Datta, Krishna K.

1982-01-01T23:59:59.000Z

319

L.van BEETHOVEN : Quatuor n9 en Ut majeur, Op.59, n3 Andante con moto -Allegro vivace -  

E-Print Network [OSTI]

L.van BEETHOVEN : Quatuor n°9 en Ut majeur, Op.59, n°3 Andante con moto - Allegro vivace - Andante con moto quasi allegretto - Menuetto - Allegro molto Ce quatuor, troisième de la série dédiée au comte

Mazliak, Laurent

320

Exact solution of the van der Waals model in the critical region  

E-Print Network [OSTI]

Inspired by the theory of nonlinear conservation laws, we propose a novel approach, in the framework of statistical mechanics, that naturally extends the van der Waals model to the critical region. Starting from an effective microscopic description, we derive the general functional form of its mean field partition function under the assumption named Isochoric Weights Thermodynamic ansatz. The condition that outside the critical region the model reproduces, in the thermodynamic limit, the classical van der Waals equation of state allows to fix uniquely the partition function. We show that isothermal curves develop a classical viscous shock which provides the exact analytical description of the first order gas-liquid transition of simple fluids. The solution obtained holds for finite number of particles and, in the thermodynamic limit, automatically encodes the Maxwell equal areas rule.

Adriano Barra; Antonio Moro

2014-12-05T23:59:59.000Z

Note: This page contains sample records for the topic "vi van dyke" 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

Van't Hoff law for temperature dependent Langmuir constants in clathrate hydrate nanocavities  

E-Print Network [OSTI]

This work gives a van't Hoff law expression of Langmuir constants of different species for determining their occupancy in the nanocavities of clathrate hydrates. The van't Hoff law's parameters are derived from a fit with Langmuir constants calculated using a pairwise site-site interaction potential to model the anisotropic potential environment in the cavities, as a function of temperature. The parameters can be used for calculating clathrates compositions. Results are given for nineteen gas species trapped in the small and large cavities of structure types I and II [1]. The accuracy of this approach is based on a comparison with available experimental data for ethane and cyclo- propane clathrate hydrates. The numerical method applied in this work, was recently validated from a comparison with the spherical cell method based on analytical considerations [1

Lakhlifi, Azzedine

2015-01-01T23:59:59.000Z

322

van der Waals forces in density functional theory: The vdW-DF method  

E-Print Network [OSTI]

A density functional theory (DFT) that accounts for van der Waals (vdW) interactions in condensed matter, materials physics, chemistry, and biology is reviewed. The insights that led to the construction of the Rutgers-Chalmers van der Waals Density Functional (vdW-DF) are presented with the aim of giving a historical perspective, while also emphasising more recent efforts which have sought to improve its accuracy. In addition to technical details, we discuss a range of recent applications that illustrate the necessity of including dispersion interactions in DFT. This review highlights the value of the vdW-DF method as a general-purpose method, not only for dispersion bound systems, but also in densely packed systems where these types of interactions are traditionally thought to be negligible.

Berland, Kristian; Lee, Kyuho; Schröder, Elsebeth; Thonhauser, T; Hyldgaard, Per; Lundqvist, Bengt I

2014-01-01T23:59:59.000Z

323

Using Van Manen's model to assess levels of reflectivity among preservice physical education teachers  

E-Print Network [OSTI]

as we improvise, revise, and create new ways of deriving meaning from experience ? thinking to learn.? (p. 844). Rodgers states that reflection includes four criteria: a meaning-making process that makes continuity of learning possible; a systematic... and society; and reflective teaching is committed to reflection as a communal activity. According to Van Manen (1977), teachers must be able to apply a variety of techniques to the curriculum and to the teaching-learning process so that a predetermined...

Ballard, Kristy Kay

2006-10-30T23:59:59.000Z

324

Quasi-local-density approximation for a van der Waals energy functional  

E-Print Network [OSTI]

We discuss a possible form for a theory akin to local density functional theory, but able to produce van der Waals energies in a natural fashion. The usual Local Density Approximation (LDA) for the exchange and correlation energy $E_{xc}$ of an inhomogeneous electronic system can be derived by making a quasilocal approximation for the {\\it interacting} density-density response function $\\chi (\\vec{r},\\vec{r} ^{\\prime},\\omega)$, then using the fluctuation-dissipation theorem and a Feynman coupling-constant integration to generate $E_{xc}$. The first new idea proposed here is to use the same approach except that one makes a quasilocal approximation for the {\\it bare} response $\\chi ^{0}$, rather than for $\\chi $. The interacting response is then obtained by solving a nonlocal screening integral equation in real space. If the nonlocal screening is done at the time-dependent Hartree level, then the resulting energy is an approximation to the full inhomogeneous RPA energy: we show here that the inhomogeneous RPA correlation energy contains a van der Waals term for the case of widely-separated neutral subsystems. The second new idea is to use a particularly simple way of introducing LDA-like local field corrrections into the screening equations, giving a theory which should remain reasonable for all separations of a pair of subsystems, encompassing both the van der Waals limit much as in RPA and the bonding limit much as in LDA theory.

John F. Dobson

2003-11-17T23:59:59.000Z

325

Eighteen-Month Final Evaluation of UPS Second Generation Diesel Hybrid-Electric Delivery Vans  

SciTech Connect (OSTI)

A parallel hybrid-electric diesel delivery van propulsion system was evaluated at a UPS facility in Minneapolis using on-vehicle data logging, fueling, and maintenance records. Route and drive cycle analysis showed different duty cycles for hybrid vs. conventional delivery vans; routes were switched between the study groups to provide a valid comparison. The hybrids demonstrated greater advantage on the more urban routes; the initial conventional vans' routes had less dense delivery zones. The fuel economy of the hybrids on the original conventional group?s routes was 10.4 mpg vs. 9.2 mpg for the conventional group on those routes a year earlier. The hybrid group's fuel economy on the original hybrid route assignments was 9.4 mpg vs. 7.9 mpg for the conventional group on those routes a year later. There was no statistically significant difference in total maintenance cost per mile or for the vehicle total cost of operation per mile. Propulsion-related maintenance cost per mile was 77% higher for the hybrids, but only 52% more on a cost-per-delivery-day basis. Laboratory dynamometer testing demonstrated 13%-36% hybrid fuel economy improvement, depending on duty cycle, and up to a 45% improvement in ton-mi/gal. NOx emissions increased 21%-49% for the hybrids in laboratory testing.

Lammert, M.; Walkowicz, K.

2012-09-01T23:59:59.000Z

326

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

327

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

328

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

329

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

330

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

331

UBC Social Ecological Economic Development Studies (SEEDS) Student Report Andrew Roach, Chris Forrest, Jedaiah van Dijk, Jess Herman, Ricky Sangha, Svyatoslav Korshunov  

E-Print Network [OSTI]

UBC Social Ecological Economic Development Studies (SEEDS) Student Report Andrew Roach, Chris #3 Andrew Roach Chris Forrest ( Jedaiah van Dijk ( Jess Herman ( Ricky Sangha ( Svyatoslav Korshunov

332

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

333

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

334

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

335

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

336

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

337

Composite multi-vortex diffraction-free beams and van Hove singularities in honeycomb lattices  

E-Print Network [OSTI]

We find diffraction-free beams for graphene and MoS$_2$-type honeycomb optical lattices. The resulting composite solutions have the form of multi-vortices, with spinor topological charges ($n$, $n\\pm1$). Exact solutions for the spinor components are obtained in the Dirac limit. The effects of the valley degree of freedom and the mass are analyzed. Passing through the van-Hove singularity the topological structure of the solutions is modified. Exactly at the singularity the diffraction-free beams take the form of strongly localized one-dimensional stripes.

Paltoglou, Vassilis; Efremidis, Nikolaos K

2015-01-01T23:59:59.000Z

338

Ms Van T Nguyen | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

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 Switched5 IndustrialIsadore Perlman,Bios HighRadiobiology: Low DoseofMiscellaneousRocioVan T

339

Color Edge Detection by Photometric Quasi-Invariants J. van de Weijer Th. Gevers J.M. Geusebroek  

E-Print Network [OSTI]

is the loss of discriminative power and the inherent instabil- ities caused by the non-linear transformations in discriminative power. 1. Introduction Photometric invariance is important for many computer vi- sion applications and specularity invariance [1] [2] [6]. However, the non-linear transformations, often used to compute

Gevers, Theo

340

Remainder estimates for the Long Range Behavior of the van der Waals interaction energy  

E-Print Network [OSTI]

The van der Waals-London's law, for a collection of atoms at large separation, states that their interaction energy is pairwise attractive and decays proportionally to one over their distance to the sixth. The first rigorous result in this direction was obtained by Lieb and Thirring [LT], by proving an upper bound which confirms this law. Recently the van der Waals-London's law was proven under some assumptions by I.M. Sigal and the author [AS]. Following the strategy of [AS] and reworking the approach appropriately, we prove estimates on the remainder of the interaction energy. Furthermore, using an appropriate test function, we prove an upper bound for the interaction energy, which is sharp to leading order. For the upper bound, our assumptions are weaker, the remainder estimates stronger and the proof is simpler. The upper bound, for the cases it applies, improves considerably the upper bound of Lieb and Thirring. However, their bound is much more general. Here we consider only spinless Fermions.

Ioannis Anapolitanos

2014-10-21T23:59:59.000Z

Note: This page contains sample records for the topic "vi van dyke" 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

Repulsive van der Waals forces due to hydrogen exposure on bilayer Graphene  

E-Print Network [OSTI]

We consider the effect of atomic hydrogen exposure to a system of two undoped sheets of graphene grown near a silica surface (the first adsorbed to the surface and the second freestanding near the surface). In the absence of atomic hydrogen the van der Waals force between the sheets is attractive at all separations causing the sheets to come closer together. However, with addition of atomic hydrogen between the sheets the long range van der Waals interaction turns repulsive at a critical concentration. The underlying triple layer structure (SiO2 -Atomic Hydrogen Gas -Air) gives rise to a long range repulsion that at large enough separations dominates over the more rapidly decaying attraction between the two-dimensional undoped graphene sheets (and between the outer graphene sheet and SiO2). This may be an avenue to tune the separation between two graphene sheets with the gas concentration. Doping of the graphene layers increases the attractive part of the interaction and hence reduces the net repulsive interaction.

Mathias Boström; Bo E. Sernelius

2012-01-05T23:59:59.000Z

342

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

343

Journal papers 1. F. Wols, J.L. Kloosterman, D. Lathouwers and T.H.J.J. van der Hagen, Core design and fuel  

E-Print Network [OSTI]

definitions and their application to the optimization of a Molten Salt Reactor design. Annals of Nuclear. Lathouwers, T.H.J.J. van der Hagen, H. van Dam, Optimization of a radially cooled pebble bed reactor. Nuclear and fuel management of a thorium-breeder pebble bed high-temperature reactor, Nuclear Technology 186 (2014

344

JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH, VOL. 118, 119, doi:10.1002/jgrb.50117, 2013 The 2011 Mw 7.1 Van (Eastern Turkey) earthquake  

E-Print Network [OSTI]

Mw 7.1 Van (Eastern Turkey) earthquake J. R. Elliott,1 A. C. Copley,2 R. Holley,3 K. Scharer,4 and B to constrain the fault parameters of the Mw 7.1 2011 Van (Eastern Turkey) reverse-slip earthquake Turkey) earthquake, J. Geophys. Res. Solid Earth, 118, doi:10.1002/jgrb.50117. 1. Introduction [2

345

Van de Louw et al. Respiratory Research 2010, 11:38 http://respiratory-research.com/content/11/1/38  

E-Print Network [OSTI]

Van de Louw et al. Respiratory Research 2010, 11:38 http://respiratory-research.com/content/11 cardiovascular variability and baroreflex gain in mechanically ventilated patients Andry Van de Louw*1,2, Claire nervous system. During spontaneous breathing, the application of positive end- expiratory pressure (PEEP

Boyer, Edmond

346

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

347

archaean mafic dykes: Topics by E-print Network  

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

place during pervasive hydrothermal alteration, and the gold is mainly located in carbonate-altered rocks. Remobilisation of gold occurred during formation of later quartz...

348

A Miocene Basanite Peperitic Dyke At Stanley, Northwestern Tasmania,  

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: 160 East 300 SouthWater Rights, Substantive(Sichuan, Sw China)| OpenThe Geothermal

349

Dyke Hot Springs Geothermal Area | 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 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 No revision has TypeGeothermalII WindDupont

350

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

351

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

352

"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

353

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

354

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

355

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

356

Flow at Low Water Contents: A Simple Approach for Inverse Estimation of van Genuchten-Mualem Soil Hydraulic Parameters  

E-Print Network [OSTI]

. The amount and energy status of water in a soil can affect considerably the soil hydraulic properties. While1 Flow at Low Water Contents: A Simple Approach for Inverse Estimation of van Genuchten-Mualem Soil BP 7021, Burkina Faso Abstract The unsaturated soil hydraulic properties (the soil water

Paris-Sud XI, Université de

357

Faraday Discuss. Chem. SOC.,1982, 73, 339-355 Predissociation of Weak-anisotropy Van der Waals Molecules  

E-Print Network [OSTI]

, Canada N2L 3Gl Received 25th January, 1982 Widths and energies for predissociating levels of Hz-inert-gas Van der Waals molecules are calculated by solving the close-coupling equations for accurate potential-energy for calculating level energiesand widths. None of these is found to be entirely satisfactory, and a new method

Le Roy, Robert J.

358

Hot Pin Welding of Thin Poly(vinyl chloride) Sheet James D. Van de Ven, Arthur G. Erdman  

E-Print Network [OSTI]

Hot Pin Welding of Thin Poly(vinyl chloride) Sheet James D. Van de Ven, Arthur G. Erdman Mechanical of welding two thin sheets of poly(vinyl chloride) (PVC) with a heated pin, thus allowing construction of a relationship between the weld temperature and weld strength. Constructing a relationship between weld strength

Van de Ven, James D.

359

What's in an electronic business model? Jaap Gordijn12, Hans Akkermans13, and Hans van Vliet1  

E-Print Network [OSTI]

What's in an electronic business model? Jaap Gordijn12, Hans Akkermans13, and Hans van Vliet1 1. An electronic business model is an important baseline for the development of e-commerce system applications, how an e-business model must be defined and specified is a largely open issue. Business decision

van Vliet, Hans

360

Business Modelling is not Process Modelling Jaap Gordijn12, Hans Akkermans13, and Hans van Vliet1  

E-Print Network [OSTI]

Business Modelling is not Process Modelling Jaap Gordijn12, Hans Akkermans13, and Hans van Vliet1 1 with a design of the e-business model. We often encounter the view, in research as well as industry practice, that an e-business model is similar to a business process model, and so can be specified using UML activity

van Vliet, Hans

Note: This page contains sample records for the topic "vi van dyke" 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

STABILITY ANALYSIS OF -KINKS IN A 0-JOSEPHSON G. DERKS, A. DOELMAN, S.A. VAN GILS , AND H. SUSANTO  

E-Print Network [OSTI]

STABILITY ANALYSIS OF -KINKS IN A 0- JOSEPHSON JUNCTION G. DERKS, A. DOELMAN, S.A. VAN GILS with constant forcing and its continuum limit(s) to model a 0- Josephson junction with an applied bias current the propagation of magnetic flux (fluxons) in long Josephson junctions [18, 5]. The flux quanta or fluxons

Wirosoetisno, Djoko

362

Cloud Resource Orchestration: A Data-Centric Approach Changbin Liu Yun Mao Jacobus Van der Merwe Mary Fernndez  

E-Print Network [OSTI]

Cloud Resource Orchestration: A Data-Centric Approach Changbin Liu Yun Mao Jacobus Van der Merwe Mary Fernández AT&T Labs - Research University of Pennsylvania ABSTRACT Cloud computing provides users virtualization of the underlying physical infrastructure. However, the scale and highly dynamic nature of cloud

Fisher, Kathleen

363

An Analysis of Facebook Photo Caching Qi Huang, Ken Birman, Robbert van Renesse, Wyatt Lloyd, Sanjeev Kumar, Harry C. Li  

E-Print Network [OSTI]

An Analysis of Facebook Photo Caching Qi Huang, Ken Birman, Robbert van Renesse, Wyatt Lloyd, Sanjeev Kumar, Harry C. Li Cornell University, Princeton University, Facebook Inc. Abstract This paper examines the workload of Facebook's photo- serving stack and the effectiveness of the many layers

Keinan, Alon

364

Utrecht Multi-Person Motion (UMPM) N.P. van der Aa, X. Luo, G.-J. Giezeman  

E-Print Network [OSTI]

Utrecht Multi-Person Motion (UMPM) benchmark N.P. van der Aa, X. Luo, G.-J. Giezeman R.T. Tan, R Utrecht University, Utrecht, The Netherlands www.cs.uu.nl #12;ISSN: 0924-3275 Department of Information and Computing Sciences Utrecht University P.O. Box 80.089 3508 TB Utrecht The Netherlands #12;Abstract Analyzing

Utrecht, Universiteit

365

DDiiVVaa is een Digitale nieuwsbrief van de vier Vakbonden vertegenwoordigd op de TU/e  

E-Print Network [OSTI]

woon-werkverkeer · UFO-evalutie · Ziektekostenverzekering · Reorganisatie CSC · Huisregels · Nuttige. We houden u op de hoogte. UFO-evaluatie De invoering van de UFO hebben we geëvalueerd. De vakbonden vakbonden zijn: Het OBP geeft aan over het algemeen beter ingelicht te zijn over UFO dan het WP. Naast wat

Franssen, Michael

366

Vacancies in ordered and disordered binary alloys treated with the cluster expansion A. Van der Ven and G. Ceder  

E-Print Network [OSTI]

Vacancies in ordered and disordered binary alloys treated with the cluster expansion A. Van der Ven far neglected the presence of vacancies. Here, we invoke a local cluster expansion as a perturbation to the standard binary cluster expansion to model the equilibrium vacancy concentration in a binary alloy

Ceder, Gerbrand

367

Vacancy diffusion in the Cu001 surface I: an STM study R. van Gastel a,*, E. Somfai b,1  

E-Print Network [OSTI]

Vacancy diffusion in the Cuð001� surface I: an STM study R. van Gastel a,*, E. Somfai b,1 , S Abstract We have used the indium/copper surface alloy to study the dynamics of surface vacancies on the Cu, are used as probes to detect the rapid diffusion of surface vacancies. STM measurements show

van Saarloos, Wim

368

Evaluation of Alfalfa Sulfur Needs in K.A. Kelling, P.E. Speth, and S. van Wychen  

E-Print Network [OSTI]

Evaluation of Alfalfa Sulfur Needs in Wisconsin K.A. Kelling, P.E. Speth, and S. van Wychen: New versus older stands (Arlington and Lancaster) On-farm +/- S in three counties Alfalfa S survey;#12;Wisconsin Alfalfa Sulfur Survey: Sample numbers: ­ 53 in 2000 ­ 73 in 2001 ­ 9 to be analyzed 28 counties

Balser, Teri C.

369

An Analysis of the Role of Emotions and Social Influence in Learning Jan Treur, Arlette van Wissen  

E-Print Network [OSTI]

concerning the learning process: Hebbian learning, internal simulation, interaction of emotion and cognition. The simulations show how different (social) simuli can affect learning processes. Based on these findings1 An Analysis of the Role of Emotions and Social Influence in Learning Jan Treur, Arlette van

Treur, Jan

370

Using OpenGL State History for Graphics Debugging Bryce van Dyk, Christof Lutteroth, Gerald Weber, Burkhard Wnsche  

E-Print Network [OSTI]

Using OpenGL State History for Graphics Debugging Bryce van Dyk, Christof Lutteroth, Gerald Weber the unique debugging requirements of graphics programming, specialized tools are needed to aid in the debugging process. Modern graphics debuggers allow developers to inspect the current graphics state

Sun, Jing

371

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

372

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

373

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

374

Supporting Information available online1 Van Bael et al., Endophytic fungi increase the processing rate of leavesby leaf-cutting ants2  

E-Print Network [OSTI]

conidia morphology and not molecular data to confirm its identity in this collection (Van Bael,17. The plants were sprayed with rainwater and left overnight in fine mesh cages (to41 protect from insect damage

Bermingham, Eldredge

375

Communication: Determining the structure of the N{sub 2}Ar van der Waals complex with laser-based channel-selected Coulomb explosion  

SciTech Connect (OSTI)

We experimentally reconstructed the structure of the N{sub 2}Ar van der Waals complex with the technique of laser-based channel-selected Coulomb explosion imaging. The internuclear distance between the N{sub 2} center of mass and the Ar atom, i.e., the length of the van der Waals bond, was determined to be 3.88 Å from the two-body explosion channels. The angle between the van der Waals bond and the N{sub 2} principal axis was determined to be 90° from the three-body explosion channels. The reconstructed structure was contrasted with our high level ab initio calculations. The agreement demonstrated the potential application of laser-based Coulomb explosion in imaging transient molecular structure, particularly for floppy van der Waals complexes, whose structures remain difficult to be determined by conventional spectroscopic methods.

Wu, Chengyin, E-mail: cywu@pku.edu.cn; Liu, Yunquan; Gong, Qihuang [State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871 (China) [State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871 (China); Collaborative Innovation Center of Quantum Matter, Beijing (China); Wu, Cong; Xie, Xiguo; Li, Min; Deng, Yongkai [State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871 (China)] [State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871 (China); Song, Di; Su, Hongmei, E-mail: hongmei@iccas.ac.cn [State Key Laboratory of Molecular Reaction Dynamics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)] [State Key Laboratory of Molecular Reaction Dynamics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)

2014-04-14T23:59:59.000Z

376

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

377

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

378

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.

379

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

380

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.

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


381

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

382

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.

383

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

384

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

385

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

386

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

387

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.

388

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.

389

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

390

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

391

An Exhibition Review, with a Gallery of Selected Images of "Dutch New York Between East and West: The World of Margrieta van Varick"  

E-Print Network [OSTI]

inventory) included a kast. reviews 89 Exhibit 170. Richard Varick by Ralph Earl, 1787. (New York) Oil on canvas, 31 ?" x 27 ?." Albany Institute of History & Art, NY. A descendant of Margrieta Van Varick, Richard Varick was a notable military..., would have brought back to the West as sale items or souvenirs. We know from her estate inventory (NY, 1696), that Van Varick?s stock in Brooklyn, NY, included exotic goods from artisanal manufac- turers and suppliers in the East Indies...

Mulvihill, Maureen E.

2010-01-01T23:59:59.000Z

392

Fluctuations of the van der Waals attraction force between macroscopic bodies  

SciTech Connect (OSTI)

The tliccry of the fluctuations of the van der Waals (vdW) attractive force between macroscopic bodies is developed. A general equation for the spectral density of the fluctuating surface Maxwell stress (force per unit mea.) in va,cuurn nea,r the surface of a body is derived under the assumption that, inside the bodies, the random La.ngevin sources of the electric and magnetic fields (charges, polarizations, currents) are Gaussian. This spectral density of stress is an integral over frequencies of a sum of terms each of which is a product of Fourier amplitudes of two field components' correlation functions. For metallic bodies, the contribution of free electrons to the vdW force (at frequencies up to the frequency of electron scattering) is calculated. This contribution to the force and its noise grows with temperature. Application of noiseless voltage to two interacting metals across the vacuum gap between them generates an additional force noise. This additional noise is proportional to the volta.ge squared and to the spectral density of the random electric field at the frequency of noise measurement. The theoretical qualitative conclusions are in good agreement with experirncnts.

Kogan, A. S. (Aleksandr Semenovich)

2003-01-01T23:59:59.000Z

393

Nucleotide insertion initiated by van der Waals interaction during polymerase beta DNA replication  

E-Print Network [OSTI]

Immortality will remain a fantasy for as long as aging is determined by the erroneous biochemical reactions during a particular DNA replication. The replication and base excision repair mechanism, associated to eukaryotic DNA polymerase-beta enzyme are central to maintaining a healthy cell. Here, we give a series of unambiguous theoretical analyses and prove that the exclusive biochemical reaction involved in a single nucleotide insertion into the DNA primer can be efficiently tracked using the renormalized van der Waals interaction of the stronger type, and the Hermansson blue-shifting hydrogen bond effect. We found that there are two biochemical steps involved to complete the insertion of a single dCTP into the 3' end of a DNA primer. First, the O3' (from a DNA primer) initiates the nucleophilic attack on P_alpha?(from an incoming dCTP), in response, O3_alpha (bonded to P_alpha) retaliates by interacting with H' (bonded to O3'). These interactions are shown to be strongly interdependent and require the form...

Arulsamy, Andrew Das

2011-01-01T23:59:59.000Z

394

Turbulent mixing of a slightly supercritical van der Waals fluid at low-Mach number  

SciTech Connect (OSTI)

Supercritical fluids near the critical point are characterized by liquid-like densities and gas-like transport properties. These features are purposely exploited in different contexts ranging from natural products extraction/fractionation to aerospace propulsion. Large part of studies concerns this last context, focusing on the dynamics of supercritical fluids at high Mach number where compressibility and thermodynamics strictly interact. Despite the widespread use also at low Mach number, the turbulent mixing properties of slightly supercritical fluids have still not investigated in detail in this regime. This topic is addressed here by dealing with Direct Numerical Simulations of a coaxial jet of a slightly supercritical van der Waals fluid. Since acoustic effects are irrelevant in the low Mach number conditions found in many industrial applications, the numerical model is based on a suitable low-Mach number expansion of the governing equation. According to experimental observations, the weakly supercritical regime is characterized by the formation of finger-like structures – the so-called ligaments – in the shear layers separating the two streams. The mechanism of ligament formation at vanishing Mach number is extracted from the simulations and a detailed statistical characterization is provided. Ligaments always form whenever a high density contrast occurs, independently of real or perfect gas behaviors. The difference between real and perfect gas conditions is found in the ligament small-scale structure. More intense density gradients and thinner interfaces characterize the near critical fluid in comparison with the smoother behavior of the perfect gas. A phenomenological interpretation is here provided on the basis of the real gas thermodynamics properties.

Battista, F.; Casciola, C. M. [Department of Mechanical and Aerospace Engineering, Sapienza University, via Eudossiana 18, 00184 Rome (Italy); Picano, F. [Department of Industrial Engineering, University of Padova, via Venezia 1, 35131 Padova (Italy)

2014-05-15T23:59:59.000Z

396

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

397

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

398

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

399

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

400

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

Note: This page contains sample records for the topic "vi van dyke" 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

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

402

Wave Equations for Invariant Infeld-van der Waerden Wave Functions for Photons and Their Physical Significance  

E-Print Network [OSTI]

The inner structure of the {\\gamma}{\\epsilon}-formalisms of Infeld and van der Waerden admits the occurrence of spin-tensor electromagnetic fields which bear invariance under the action of the generalized Weyl gauge group. A concise derivation of the wave equations for such fields is carried out explicitly along with the construction of a set of torsionless covariant-derivative expressions. It is emphatically pointed out that the integration of the wave equations arising herein may under certain circumstances produce significant insights into the situation concerning the description of some physical properties of the cosmic microwave background.

J. G. Cardoso

2010-06-09T23:59:59.000Z

403

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

404

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

405

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

406

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

407

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

408

H Netten, I.T. Young, M. Prins, L.J. van Vliet, H. Tanke, J. Vrolijk, W. Sloos, Automation of dot counting in cell nuclei, in: Proc. 12th  

E-Print Network [OSTI]

H Netten, I.T. Young, M. Prins, L.J. van Vliet, H. Tanke, J. Vrolijk, W. Sloos, Automation of dot, Michele Prins1, Lucas J. van Vliet1, Hans Tanke2, Hans Vrolijk2, and Willem Sloos2 1Faculty of Applied specific abnormalities (e.g. Tay­Sachs, Huntington's) or to facilitate the process of counting chromosome

van Vliet, Lucas J.

409

H Netten, I.T. Young, M. Prins, L.J. van Vliet, H. Tanke, J. Vrolijk, W. Sloos, Automation of dot counting in cell nuclei, in: Proc. 12 th IAPR International Conference on Pattern Recognition, Jerusalem, Israel, 1994, 8487.  

E-Print Network [OSTI]

H Netten, I.T. Young, M. Prins, L.J. van Vliet, H. Tanke, J. Vrolijk, W. Sloos, Automation of dot , Michele Prins 1 , Lucas J. van Vliet 1 , Hans Tanke 2 , Hans Vrolijk 2 , and Willem Sloos 2 1 Faculty as to detect specific abnormalities (e.g. Tay--Sachs, Huntington's) or to facilitate the process of counting

van Vliet, Lucas J.

410

OFFSHORE WAKE MEASUREMENTS USING A SODAR Luuk Folkerts, Jan Coelingh and Ernst van Zuylen, Ecofys bv, P.O. Box 8408, NL-3503 RK Utrecht,  

E-Print Network [OSTI]

OFFSHORE WAKE MEASUREMENTS USING A SODAR Luuk Folkerts, Jan Coelingh and Ernst van Zuylen, Ecofys to provide the first offshore wake measurements with SODAR. Wake effects were measured at distances from and evaluation of offshore wake models to improve the assessment of wind farm layout. 1 INTRODUCTION The wake

411

Study of the ArBr-, AC, and Krl-anions and the corresponding neutral van der Waals complexes by anion zero electron kinetic energy  

E-Print Network [OSTI]

rotational transitions. From our data, we construct the potential energy curve for each neutral state as well energy functions between open and closed shell species or between neutrals and ions are gener- ally muchStudy of the ArBr-, AC, and Krl- anions and the corresponding neutral van der Waals complexes

Neumark, Daniel M.

412

How focused pumping affects type-II spontaneous parametric down-conversion P. S. K. Lee, M. P. van Exter, and J. P. Woerdman  

E-Print Network [OSTI]

How focused pumping affects type-II spontaneous parametric down-conversion P. S. K. Lee, M. P. van-wave to focused pumping in type-II down-conversion is analogous to the transition from cw to pulsed pumping. We show experimentally that focused pumping leads to asymmetric broadening of both the ordinary

Exter, Martin van

413

A Review of "Humanism in an Age of Science: The Amsterdam Athenaeum in the Golden Age, 1632-1704" by Dirk van Miert  

E-Print Network [OSTI]

reviews 225 Dirk van Miert. Humanism in an Age of Science: The Amsterdam Athenaeum in the Golden Age, 1632-1704. Leiden and Boston: Brill, 2009. xiv + 433 pp. + 11 illus. + 3 appendices. $147.00. Review by joseph m. mccarthy, suffolk...

McCarthy, Joseph M.

2010-01-01T23:59:59.000Z

414

BIBLIOGRAPHY JOS H. WEBER 1985-2011 1. J.H. Weber, "Het stapelen van n-dimensionale bollen" (in Dutch), M.Sc.  

E-Print Network [OSTI]

BIBLIOGRAPHY JOS H. WEBER 1985-2011 THESES 1. J.H. Weber, "Het stapelen van n-dimensionale bollen, 1985. 2. J.H. Weber, "Bounds and constructions for binary block codes correcting asymmetric or unidirectional errors", Ph.D. Thesis, Delft University of Technology, The Netherlands, 1989. 3. J.H. Weber, "DUne

415

Author Addresses: J.A. van Biljon, School of Computing, University of South Africa, P O Box 392, UNISA, 0003, South Africa; vbiljja@unisa.ac.za  

E-Print Network [OSTI]

Addresses: J.A. van Biljon, School of Computing, University of South Africa, P O Box 392, UNISA, 0003, South Africa; vbiljja@unisa.ac.za P Kotze, School of Computing, University of South Africa, P O Box 392, UNISA, 0003, South Africa; kotzep@unisa.ac.za K. V. Renaud, Department of Computing Science, The University

Williamson, John

416

Single photon ionization of van der Waals clusters with a soft x-ray laser: ,,CO2...n and ,,CO2...n,,H2O...m  

E-Print Network [OSTI]

Single photon ionization of van der Waals clusters with a soft x-ray laser: ,,CO2...n and ,,CO2...n 2006; published online 20 October 2006 Pure neutral CO2 n clusters and mixed CO2 n H2O m clustersV. The distribution of pure CO2 n clusters decreases roughly exponentially with increasing cluster size. During

Rocca, Jorge J.

417

ESSAYWEDSTRIJD `VRIJHEID SPREEK JE AF' In aanloop naar de Nationale Viering van de Bevrijding op 5 mei 2013 in Utrecht organiseren het  

E-Print Network [OSTI]

5 mei 2013 in Utrecht organiseren het Nationaal Comité 4 en 5 mei, de afdeling Sociologie van de Universiteit Utrecht en het Algemeen Dagblad/Utrechts Nieuwsblad een essaywedstrijd over het jaarthema visie op vrijheid te geven. Het beste essay zal worden gepubliceerd in het Algemeen Dagblad/Utrechts

Utrecht, Universiteit

418

Probabilistic 0-12 h forecasts of (severe) thunderstorms in the Netherlands Maurice Schmeits (schmeits@knmi.nl), Kees Kok, Daan Vogelezang and Rudolf van Westrhenen  

E-Print Network [OSTI]

Probabilistic 0-12 h forecasts of (severe) thunderstorms in the Netherlands Maurice Schmeits (schmeits@knmi.nl), Kees Kok, Daan Vogelezang and Rudolf van Westrhenen Royal Netherlands Meteorological Institute (KNMI), De Bilt, The Netherlands In this project the technique of Model Output Statistics (MOS)1

Schmeits, Maurice

419

Characterization of Van Well Sweet Cherry Self-Incompatibility (S) Alleles Sequoia Leuba1, Ben Kilian2 and Amit Dhingra2  

E-Print Network [OSTI]

Characterization of Van Well Sweet Cherry Self-Incompatibility (S) Alleles Sequoia Leuba1, Ben, WA The multi-allelic self-incompatibility (S) locus controls self-incompatibility and incompatibility between cultivars of sweet cherry (Prunus avium L.) through a gametophytic self-incompatibility system

Collins, Gary S.

420

The kinematics of the Zagros Mountains (Iran) D. HATZFELD1*, C. AUTHEMAYOU24, P. VAN DER BEEK5, O. BELLIER2,  

E-Print Network [OSTI]

The kinematics of the Zagros Mountains (Iran) D. HATZFELD1*, C. AUTHEMAYOU2­4, P. VAN DER BEEK5, O Survey of Iran, PO Box 13185-1494, Tehran, Iran 8 International Institute of Earthquake Engineering and Seismology, PO Box 19395/3913, Tehran, Iran 9 National Cartographic Center, PO Box 13185/1684, Tehran, Iran

Hatzfeld, Denis

Note: This page contains sample records for the topic "vi van dyke" 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

Characterization of a geothermal system in the Upper Arkansas Valley, CO Thomas Blum*, Kasper van Wijk and Lee Liberty, Boise State University  

E-Print Network [OSTI]

Characterization of a geothermal system in the Upper Arkansas Valley, CO Thomas Blum*, Kasper van a geothermal system in the Mt. Princeton area. We conclude that a shallow orthogonal fault system in this area appears to be responsible for the local geothermal signature at and near the surface. The extent to which

422

Supporting the BPM life-cycle with FileNet Mariska Netjes, Hajo A. Reijers, Wil M.P. van der Aalst  

E-Print Network [OSTI]

Supporting the BPM life-cycle with FileNet Mariska Netjes, Hajo A. Reijers, Wil M.P. van der Aalst, The Netherlands m.netjes@tm.tue.nl Abstract. Business Process Management (BPM) systems provide a broad range for the complete BPM life-cycle: (re)design, configuration, execution, control, and diagnosis of processes

van der Aalst, Wil

423

Interpolation-based H2 Model Reduction for port-Hamiltonian Systems Serkan Gugercin, Rostyslav V. Polyuga, Christopher A. Beattie, and Arjan J. van der Schaft  

E-Print Network [OSTI]

Interpolation-based H2 Model Reduction for port-Hamiltonian Systems Serkan Gugercin, Rostyslav V. Polyuga, Christopher A. Beattie, and Arjan J. van der Schaft Abstract-- Port network modeling of physical systems leads directly to an important class of passive state space systems: port-Hamiltonian systems. We

Schaft, Arjan van der

424

Maximal Air Bubble Entrainment at Liquid-Drop Impact Wilco Bouwhuis, Roeland C. A. van der Veen, Tuan Tran, Diederik L. Keij, Koen G. Winkels, Ivo R. Peters,  

E-Print Network [OSTI]

Maximal Air Bubble Entrainment at Liquid-Drop Impact Wilco Bouwhuis, Roeland C. A. van der Veen the (relative) size of this entrained air bubble: for large drop impact velocity and large droplets, the inertia on a solid surface, an air bubble can be entrapped. Here, we show that two competing effects minimize

Snoeijer, Jacco

425

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

426

Van der Waals interaction between a molecule and a spherical cavity in a metal: Nonlocality and anisotropy effects  

SciTech Connect (OSTI)

The electric response field of a small spherical metallic cavity to a molecule characterized by fluctuating dipolar and quadrupolar moments is built from spherical tensor theory. The electric susceptibility of the field gradient between the two points inside the metallic cavity is formulated by a general expression of the van der Waals energy between the two partners. The induction contribution is introduced by using the field gradient susceptibilities of the cavity at zero frequency. In order to illustrate the nonlocal effects as well as the importance of the curvature of the metallic cavity on the magnitude of the physisorption energy, we present numerical results for typical systems (HF, HCl on Ag, Al, and Cu). {copyright} {ital 1997} {ital The American Physical Society}

Labani, B.; Boustimi, M.; Baudon, J. [Laboratorie de Physique de La Matiere Condensee, Department de Physique, Universite Chouaib Doukkali, Faculte des Sciences, Boite Postale 20, El Jadida-Maroc (France)] [Laboratorie de Physique de La Matiere Condensee, Department de Physique, Universite Chouaib Doukkali, Faculte des Sciences, Boite Postale 20, El Jadida-Maroc (France)

1997-02-01T23:59:59.000Z

427

Combustion testing and heat recovery study: Frank E. Van Lare Wastewater Treatment Plant, Monroe County. Final report  

SciTech Connect (OSTI)

The objectives of the study were to record and analyze sludge management operations data and sludge incinerator combustion data; ascertain instrumentation and control needs; calculate heat balances for the incineration system; and determine the feasibility of different waste-heat recovery technologies for the Frank E. Van Lare (FEV) Wastewater Treatment Plant. As an integral part of this study, current and pending federal and state regulations were evaluated to establish their impact on furnace operation and subsequent heat recovery. Of significance is the effect of the recently promulgated Federal 40 CFR Part 503 regulations on the FEV facility. Part 503 regulations were signed into law in November 1992, and, with some exceptions, affected facilities must be in compliance by February 19, 1994. Those facilities requiring modifications or upgrades to their incineration or air pollution control equipment to meet Part 503 regulations must be in compliance by February 19, 1995.

NONE

1995-01-01T23:59:59.000Z

428

A Systematic Study of Chloride Ion Solvation in Water using van der Waals Inclusive Hybrid Density Functional Theory  

E-Print Network [OSTI]

In this work, the solvation and electronic structure of the aqueous chloride ion solution was investigated using Density Functional Theory (DFT) based \\textit{ab initio} molecular dynamics (AIMD). From an analysis of radial distribution functions, coordination numbers, and solvation structures, we found that exact exchange ($E_{\\rm xx}$) and non-local van der Waals (vdW) interactions effectively \\textit{weaken} the interactions between the Cl$^-$ ion and the first solvation shell. With a Cl-O coordination number in excellent agreement with experiment, we found that most configurations generated with vdW-inclusive hybrid DFT exhibit 6-fold coordinated distorted trigonal prism structures, which is indicative of a significantly disordered first solvation shell. By performing a series of band structure calculations on configurations generated from AIMD simulations with varying DFT potentials, we found that the solvated ion orbital energy levels (unlike the band structure of liquid water) strongly depend on the un...

Bankura, Arindam; DiStasio, Robert A; Swartz, Charles W; Klein, Michael L; Wu, Xifan

2015-01-01T23:59:59.000Z

429

Van der Waals density functional study of the structural and electronic properties of La-doped phenanthrene  

SciTech Connect (OSTI)

By the first principle calculations based on the van der Waals density functional theory, we study the crystal structures and electronic properties of La-doped phenanthrene. Two stable atomic geometries of La{sub 1}phenanthrene are obtained by relaxation of atomic positions from various initial structures. The structure-I is a metal with two energy bands crossing the Fermi level, while the structure-II displays a semiconducting state with an energy gap of 0.15 eV, which has an energy gain of 0.42 eV per unit cell compared to the structure-I. The most striking feature of La{sub 1}phenanthrene is that La 5d electrons make a significant contribution to the total density of state around the Fermi level, which is distinct from potassium doped phenanthrene and picene. Our findings provide an important foundation for the understanding of superconductivity in La-doped phenanthrene.

Yan, Xun-Wang [Beijing Computational Science Research Center, Beijing 100084 (China) [Beijing Computational Science Research Center, Beijing 100084 (China); Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062 (China); State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Science, Beijing 100190, China and School of Physics and Electrical Engineering, Anyang Normal University, Henan 455000 (China); Huang, Zhongbing, E-mail: huangzb@hubu.edu.cn [Beijing Computational Science Research Center, Beijing 100084 (China) [Beijing Computational Science Research Center, Beijing 100084 (China); Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062 (China); Lin, Hai-Qing [Beijing Computational Science Research Center, Beijing 100084 (China)] [Beijing Computational Science Research Center, Beijing 100084 (China)

2013-11-28T23:59:59.000Z

430

A Universe with a generalized ghost dark energy and Van der Waals fluid interacting with a fluid  

E-Print Network [OSTI]

In this paper we consider an unusual connection between different fluids. Having established a research goal we would like to consider a toy model of the Universe and investigate its behavior, especially for later time evolution for well known facts. The main goal of the article is to consider a toy model of the Universe with generalized ghost dark energy, Van der Waals gas and a phenomenologically modified fluid. The origin of the last component can be understood as a result of interaction between some original fluid and some source of energy or matter in Universe. By unusual connection we mean an assumption that generalized ghost dark energy has its contribution to the model by an interaction term $Q$ and we suppose an interaction $Q=3Hb(\\rho_{\\small{tot}}-\\rho_{GDe})$ of the form. Graphical analysis is performed and the questions of validity of the generalized second law of thermodynamics and stability of the model also approached in this paper.

M. Khurshudyan; B. Pourhassan; E. Chubaryan

2014-02-22T23:59:59.000Z

431

Van der Waals density-functional theory study for bulk solids with BCC, FCC, and diamond structures  

E-Print Network [OSTI]

Proper inclusion of van der Waals (vdW) interactions in theoretical simulations based on standard density functional theory (DFT) is crucial to describe the physics and chemistry of systems such as organic and layered materials. Many encouraging approaches have been proposed to combine vdW interactions with standard approximate DFT calculations. Despite many vdW studies, there is no consensus on the reliability of vdW methods. To help further development of vdW methods, we have assessed various vdW functionals through the calculation of structural prop- erties at equilibrium, such as lattice constants, bulk moduli, and cohesive energies, for bulk solids, including alkali, alkali-earth, and transition metals, with BCC, FCC, and diamond structures as the ground state structure. These results provide important information for the vdW-related materials research, which is essential for designing and optimizing materials systems for desired physical and chemical properties.

Park, Jinwoo; Hong, Suklyun

2015-01-01T23:59:59.000Z

432

Fractional Dynamical Model for the Generation of ECG like Signals from Filtered Coupled Van-der Pol Oscillators  

E-Print Network [OSTI]

In this paper, an incommensurate fractional order (FO) model has been proposed to generate ECG like waveforms. Earlier investigation of ECG like waveform generation is based on two identical Van-der Pol (VdP) family of oscillators which are coupled by time delays and gains. In this paper, we suitably modify the three state equations corresponding to the nonlinear cross-product of states, time delay coupling of the two oscillators and low-pass filtering, using the concept of fractional derivatives. Our results show that a wide variety of ECG like waveforms can be simulated from the proposed generalized models, characterizing heart conditions under different physiological conditions. Such generalization of the modelling of ECG waveforms may be useful to understand the physiological process behind ECG signal generation in normal and abnormal heart conditions. Along with the proposed FO models, an optimization based approach is also presented to estimate the VdP oscillator parameters for representing a realistic ...

Das, Saptarshi

2014-01-01T23:59:59.000Z

433

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

434

Compact two-electron wave function for bond dissociation and Van der Waals interactions: A natural amplitude assessment  

SciTech Connect (OSTI)

Electron correlations in molecules can be divided in short range dynamical correlations, long range Van der Waals type interactions, and near degeneracy static correlations. In this work, we analyze for a one-dimensional model of a two-electron system how these three types of correlations can be incorporated in a simple wave function of restricted functional form consisting of an orbital product multiplied by a single correlation function f?(r{sub 12}) depending on the interelectronic distance r{sub 12}. Since the three types of correlations mentioned lead to different signatures in terms of the natural orbital (NO) amplitudes in two-electron systems, we make an analysis of the wave function in terms of the NO amplitudes for a model system of a diatomic molecule. In our numerical implementation, we fully optimize the orbitals and the correlation function on a spatial grid without restrictions on their functional form. Due to this particular form of the wave function, we can prove that none of the amplitudes vanishes and moreover that it displays a distinct sign pattern and a series of avoided crossings as a function of the bond distance in agreement with the exact solution. This shows that the wave function ansatz correctly incorporates the long range Van der Waals interactions. We further show that the approximate wave function gives an excellent binding curve and is able to describe static correlations. We show that in order to do this the correlation function f?(r{sub 12}) needs to diverge for large r{sub 12} at large internuclear distances while for shorter bond distances it increases as a function of r{sub 12} to a maximum value after which it decays exponentially. We further give a physical interpretation of this behavior.

Giesbertz, Klaas J. H. [Theoretical Chemistry, Faculty of Exact Sciences, VU University, De Boelelaan 1083, 1081 HV Amsterdam (Netherlands)] [Theoretical Chemistry, Faculty of Exact Sciences, VU University, De Boelelaan 1083, 1081 HV Amsterdam (Netherlands); Leeuwen, Robert van [Department of Physics, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Survontie 9, Jyväskylä (Finland)] [Department of Physics, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Survontie 9, Jyväskylä (Finland)

2014-05-14T23:59:59.000Z

435

A one-dimensional Fermi accelerator model with moving wall described by a nonlinear van der Pol oscillator  

E-Print Network [OSTI]

A modification of the one-dimensional Fermi accelerator model is considered in this work. The dynamics of a classical particle of mass $m$, confined to bounce elastically between two rigid walls where one is described by a non-linear van der Pol type oscillator while the other one is fixed, working as a re-injection mechanism of the particle for a next collision, is carefully made by the use of a two-dimensional non-linear mapping. Two cases are considered: (i) the situation where the particle has mass negligible as compared to the mass of the moving wall and does not affect the motion of it; (ii) the case where collisions of the particle does affect the movement of the moving wall. For case (i) the phase space is of mixed type leading us to observe a scaling of the average velocity as a function of the parameter ($\\c{hi}$) controlling the non-linearity of the moving wall. For large $\\c{hi}$, a diffusion on the velocity is observed leading us to conclude that Fermi acceleration is taking place. On the other hand for case (ii), the motion of the moving wall is affected by collisions with the particle. However due to the properties of the van der Pol oscillation, the moving wall relaxes again to a limit cycle. Such kind of motion absorbs part of the energy of the particle leading to a suppression of the unlimited energy gain as observed in case (i). The phase space shows a set of attractors of different periods whose basin of attraction has a complicate organization.

Tiago Botari; Edson Denis Leonel

2012-06-18T23:59:59.000Z

436

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

437

EARTH SCIENCES DIVISION. ANNUAL REPORT 1977.  

E-Print Network [OSTI]

J. vall Grellnen 3. GEOTHERMAL ENERGY DEVELOPMENT NATIONALand J. VAN GREUNEN GEOTHERMAL ENERGY DEVELOPMENT - FUND I NGBY DI VI S ION OF GEOTHERMAL ENERGY (DOE) Natura I geotherma

Witherspoon, P.A.

2011-01-01T23:59:59.000Z

438

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

439

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

440

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,

Note: This page contains sample records for the topic "vi van dyke" 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

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 -

442

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

443

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

444

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

445

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

446

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

447

2009 Update UCSF Planning Group GearyEuclid  

E-Print Network [OSTI]

Bridge San Francisco Bay Golden Gate Park Lincoln Park Presidio Lombard Broadway California Sutter Turk St Cesar Chavez evAdn24 evAht03 evAht52 M arket M ission Folsom H arrison King Berry Potrero Dolores Laurel 6th St Guerrero Phelps Williams Van Dyke SF City/County Line arreSorepinuJ Jennings Executive Park

Lim, Wendell

448

M E W B O U R N E C O L L E G E o f E A R T H A N D E N E R G Y  

E-Print Network [OSTI]

in petroleum engineering. 04 LETTER FROM THE DEAN 05 OU DEDICATES VAN DYKE PLAZA 06 DAYS HONORED BY COLLEGE 07 on the basis of race, color, national origin, sex, age, religion, disability, political beliefs, or status to report that the college is continuing to move forward as we work to provide the best education

Oklahoma, University of

449

8/25/07 10:56 PMElla Baker Center : Van Jones Testifies Before Congress on 'Green-Collar' Jobs Page 1 of 2http://ellabakercenter.org/page.php?pageid=26&contentid=265  

E-Print Network [OSTI]

1 of 2http://ellabakercenter.org/page.php?pageid=26&contentid=265 Home · Reclaim the Future · Van Congress on 'Green-Collar' Jobs Page 2 of 2http://ellabakercenter.org/page.php?pageid=26&contentid=265

Kammen, Daniel M.

450

Classical ab initio van der Waals interactions from many-body dispersion and multipole machine learning models trained in chemical space  

E-Print Network [OSTI]

Accurate predictions of van der Waals forces require faithful models of dispersion, permanent and induced multipole-moments, as well as penetration and repulsion. We introduce a universal combined physics- and data-driven model of dispersion and multipole-moment contributions, respectively. Atomic multipoles are estimated "on-the-fly" for any organic molecule in any conformation using a machine learning approach trained on quantum chemistry results for tens of thousands of atoms in varying chemical environments drawn from thousands of organic molecules. Globally neutral, cationic, and anionic molecular charge states can be treated with individual models. Dispersion interactions are included via recently-proposed classical many-body potentials. For nearly one thousand intermolecular dimers, this approximate van der Waals model is found to reach an accuracy similar to that of state-of-the-art force fields, while bypassing the need for parametrization. Estimates of cohesive energies for the benzene crystal confi...

Bereau, Tristan; von Lilienfeld, O Anatole

2015-01-01T23:59:59.000Z

451

Johan Ren van Dorp, Salvador Cruz Rambaud, Jos Garca Prez, and Rafael Herreras Pleguezuelo (2007). "An Elicitation Procedure for the Generalized Trapezoidal Distribution with a Uniform Central Stage", Decision Analysis Journal, Vol. 4, pp. 156 -166.  

E-Print Network [OSTI]

Johan René van Dorp, Salvador Cruz Rambaud, José García Pérez, and Rafael Herrerías Pleguezuelo University, USA1 Salvador Cruz Rambaud , University of Almería, Spain2 José García Pérez , University@platon.ugr.es #12;Johan René van Dorp, Salvador Cruz Rambaud, José García Pérez, and Rafael Herrerías Pleguezuelo

van Dorp, Johan René

452

Effect of phosphorus on cleavage fracture in -carbide N. I. Medvedeva,1,2 R. A. Howell,2 D. C. Van Aken,2 and J. E. Medvedeva2  

E-Print Network [OSTI]

Effect of phosphorus on cleavage fracture in -carbide N. I. Medvedeva,1,2 R. A. Howell,2 D. C. Van of the phosphorus effect on ideal cleavage energy and critical stress in -carbide, Fe3AlC, a precipitate the cleavage characteristics of -carbide. We show that strong anisotropy of the Fe-P bonds in Fe3 Al,P C under

Medvedeva, Julia E.

453

A Systematic Study of Chloride Ion Solvation in Water using van der Waals Inclusive Hybrid Density Functional Theory  

E-Print Network [OSTI]

In this work, the solvation and electronic structure of the aqueous chloride ion solution was investigated using Density Functional Theory (DFT) based \\textit{ab initio} molecular dynamics (AIMD). From an analysis of radial distribution functions, coordination numbers, and solvation structures, we found that exact exchange ($E_{\\rm xx}$) and non-local van der Waals (vdW) interactions effectively \\textit{weaken} the interactions between the Cl$^-$ ion and the first solvation shell. With a Cl-O coordination number in excellent agreement with experiment, we found that most configurations generated with vdW-inclusive hybrid DFT exhibit 6-fold coordinated distorted trigonal prism structures, which is indicative of a significantly disordered first solvation shell. By performing a series of band structure calculations on configurations generated from AIMD simulations with varying DFT potentials, we found that the solvated ion orbital energy levels (unlike the band structure of liquid water) strongly depend on the underlying molecular structures. In addition, these orbital energy levels were also significantly affected by the DFT functional employed for the electronic structure; as the fraction of $E_{\\rm xx}$ was increased, the gap between the highest occupied molecular orbital of Cl$^-$ and the valence band maximum of liquid water steadily increased towards the experimental value.

Arindam Bankura; Biswajit Santra; Robert A. DiStasio Jr.; Charles W. Swartz; Michael L. Klein; Xifan Wu

2015-03-25T23:59:59.000Z

454

van der Waals density functionals built upon the electron-gas tradition: Facing the challenge of competing interactions  

SciTech Connect (OSTI)

The theoretical description of sparse matter attracts much interest, in particular for those groundstate properties that can be described by density functional theory (DFT). One proposed approach, the van der Waals density functional (vdW-DF) method, rests on strong physical foundations and offers simple yet accurate and robust functionals. A very recent functional within this method called vdW-DF-cx [K. Berland and P. Hyldgaard, Phys. Rev. B, in print] stands out in its attempt to use an exchange energy derived from the same plasmon-based theory from which the nonlocal correlation energy was derived. Encouraged by its good performance for solids, layered materials, and aromatic molecules, we apply it to several systems that are characterized by competing interactions. These include the ferroelectric response in PbTiO3, the adsorption of small molecules within metal-organic frameworks (MOFs), the graphite/diamond phase transition, and the adsorption of an aromaticmolecule on the Ag(111) surface. Our results indicate that vdW-DF-cx is overall well suited to tackle these challenging systems. In addition to being a competitive density functional for sparse matter, the vdW-DF-cx construction presents a more robust general purpose functional that could be applied to a range of materials problems with a variety of competing interactions.

Berland, Kristian [Chalmers University of Technology, Sweden] [Chalmers University of Technology, Sweden; Arter, Calvin A [Wake Forest University, Winston-Salem] [Wake Forest University, Winston-Salem; Cooper, Valentino R [ORNL] [ORNL; Lee, Dr. Kyuho [Lawrence Berkeley National Laboratory (LBNL)] [Lawrence Berkeley National Laboratory (LBNL); Lundqvist, Prof. Bengt I. [Chalmers University of Technology, Sweden] [Chalmers University of Technology, Sweden; Schroder, Prof. Elsebeth [Chalmers University of Technology, Sweden] [Chalmers University of Technology, Sweden; Thonhauser, Prof. Timo [Wake Forest University, Winston-Salem] [Wake Forest University, Winston-Salem; Hyldgaard, Per [Chalmers University of Technology, Sweden] [Chalmers University of Technology, Sweden

2014-01-01T23:59:59.000Z

455

van der Waals density functionals built upon the electron-gas tradition: Facing the challenge of competing interactions  

SciTech Connect (OSTI)

The theoretical description of sparse matter attracts much interest, in particular for those ground-state properties that can be described by density functional theory. One proposed approach, the van der Waals density functional (vdW-DF) method, rests on strong physical foundations and offers simple yet accurate and robust functionals. A very recent functional within this method called vdW-DF-cx [K. Berland and P. Hyldgaard, Phys. Rev. B 89, 035412 (2014)] stands out in its attempt to use an exchange energy derived from the same plasmon-based theory from which the nonlocal correlation energy was derived. Encouraged by its good performance for solids, layered materials, and aromatic molecules, we apply it to several systems that are characterized by competing interactions. These include the ferroelectric response in PbTiO{sub 3}, the adsorption of small molecules within metal-organic frameworks, the graphite/diamond phase transition, and the adsorption of an aromatic-molecule on the Ag(111) surface. Our results indicate that vdW-DF-cx is overall well suited to tackle these challenging systems. In addition to being a competitive density functional for sparse matter, the vdW-DF-cx construction presents a more robust general-purpose functional that could be applied to a range of materials problems with a variety of competing interactions.

Berland, Kristian [Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg (Sweden) [Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg (Sweden); Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Arter, Calvin A.; Thonhauser, T. [Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27109 (United States)] [Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27109 (United States); Cooper, Valentino R. [Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6114 (United States)] [Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6114 (United States); Lee, Kyuho [Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States) [Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720 (United States); Lundqvist, Bengt I. [Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg (Sweden)] [Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg (Sweden); Schröder, Elsebeth; Hyldgaard, Per [Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg (Sweden)] [Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg (Sweden)

2014-05-14T23:59:59.000Z

456

Hilbert-Schmidt Operators vs. Integrable Systems of Elliptic Calogero-Moser Type IV. The Relativistic Heun (van Diejen) Case  

E-Print Network [OSTI]

The 'relativistic' Heun equation is an 8-coupling difference equation that generalizes the 4-coupling Heun differential equation. It can be viewed as the time-independent Schr\\"odinger equation for an analytic difference operator introduced by van Diejen. We study Hilbert space features of this operator and its 'modular partner', based on an in-depth analysis of the eigenvectors of a Hilbert-Schmidt integral operator whose integral kernel has a previously known relation to the two difference operators. With suitable restrictions on the parameters, we show that the commuting difference operators can be promoted to a modular pair of self-adjoint commuting operators, which share their eigenvectors with the integral operator. Various remarkable spectral symmetries and commutativity properties follow from this correspondence. In particular, with couplings varying over a suitable ball in ${\\mathbb R}^8$, the discrete spectra of the operator pair are invariant under the $E_8$ Weyl group. The asymptotic behavior of an 8-parameter family of orthonormal polynomials is shown to be shared by the joint eigenvectors.

Simon N. M. Ruijsenaars

2015-01-13T23:59:59.000Z

457

Comment on "Long-period astronomical forcing of mammal turnover" by van Dam et al., Nature 443:687-691  

E-Print Network [OSTI]

Van Dam et al. (2006) claimed 2.4 to 2.5 and 1.0 Myr turnover cycles in a Spanish rodent lineages record. However, the record variance spectrum, which is missing in ibid., shows that the varying reliability and multiple alterations of raw (gapped and unaltered) data by ibid. unnaturally boosted the 2.5 and 1.0 Myr noise cycles to the 99% confidence level, while failing to recognize a third such so called 99% significant noise period, of 0.55 Myr at 5.3 var%. Thus at least one claimed period (of 1.0 Myr) is a simple modulation of a relatively stronger noise cycle (of 0.55 Myr) overlooked by ibid. All so called 99% significant periods reach mere 5 to 6% var levels which can be hardly distinguished from noise: those periods fidelity is at staggering 1 to 2 orders of magnitude below the usual signal to noise separation marker at 12.0. Remarkably, at least ten noise periods got boosted to 95% confidence level, and some five noise periods to near 95% confidence level, as well. Even the zero padding of just 4% of da...

Omerbashich, M

2006-01-01T23:59:59.000Z

458

Fractional Dynamical Model for the Generation of ECG like Signals from Filtered Coupled Van-der Pol Oscillators  

E-Print Network [OSTI]

In this paper, an incommensurate fractional order (FO) model has been proposed to generate ECG like waveforms. Earlier investigation of ECG like waveform generation is based on two identical Van-der Pol (VdP) family of oscillators which are coupled by time delays and gains. In this paper, we suitably modify the three state equations corresponding to the nonlinear cross-product of states, time delay coupling of the two oscillators and low-pass filtering, using the concept of fractional derivatives. Our results show that a wide variety of ECG like waveforms can be simulated from the proposed generalized models, characterizing heart conditions under different physiological conditions. Such generalization of the modelling of ECG waveforms may be useful to understand the physiological process behind ECG signal generation in normal and abnormal heart conditions. Along with the proposed FO models, an optimization based approach is also presented to estimate the VdP oscillator parameters for representing a realistic ECG like signal.

Saptarshi Das; Koushik Maharatna

2014-10-20T23:59:59.000Z

459

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

460

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

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


461

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

462

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

463

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

464

Adsorption mechanisms and effect of temperature in reversed-phase liquid chromatography-Meaning of the classical Van't Hoff plot in chromatography  

SciTech Connect (OSTI)

The effect of temperature on the adsorption and retention behaviors of a low molecular weight compound (phenol) on a C{sub 18}-bonded silica column (C{sub 18}-Sunfire, Waters) from aqueous solutions of methanol (20%) or acetonitrile (15%) was investigated. The results of the measurements were interpreted successively on the basis of the linear (i.e., overall retention factors) and the nonlinear (i.e., adsorption isotherms, surface heterogeneity, saturation capacities, and equilibrium constants) chromatographic methods. The confrontation of these two approaches confirmed the impossibility of a sound physical interpretation of the conventional Van't Hoff plot. The classical linear chromatography theory assumes that retention is determined by the equilibrium thermodynamics of analytes between a homogeneous stationary phase and a homogeneous mobile phase (although there may be two or several types of interactions). From values of the experimental retention factors in a temperature interval and estimates of the activity coefficients at infinite dilution in the same temperature interval provided by the UNIFAC group contribution method, evidence is provided that such a retention model cannot hold. The classical Van't Hoff plot appears meaningless and its linear behavior a mere accident. Results from nonlinear chromatography confirm these conclusions and provide explanations. The retention factors seem to fulfill the Van't Hoff equation, not the Henry constants corresponding to the different types of adsorption sites. The saturation capacities and the adsorption energies are clearly temperature dependent. The temperature dependence of these characteristics of the different assorption sites are different in aqueous methanol and acetonitrile solutions.

Gritti, Fabrice [University of Tennessee, Knoxville (UTK); Guiochon, Georges A [ORNL

2006-07-01T23:59:59.000Z

465

Hyperbolic attractor in a system of coupled non-autonomous van der Pol oscillators: Numerical test for expanding and contracting cones  

E-Print Network [OSTI]

We present numerical verification of hyperbolic nature for chaotic attractor in a system of two coupled non-autonomous van der Pol oscillators (Kuznetsov, Phys. Rev. Lett., 95, 144101, 2005). At certain parameter values, in the four-dimensional phase space of the Poincare map a toroidal domain (a direct product of a circle and a three-dimensional ball) is determined, which is mapped into itself and contains the attractor we analyze. In accordance with the computations, in this absorbing domain the conditions of hyperbolicity are valid, which are formulated in terms of contracting and expanding cones in the tangent spaces (the vector spaces of the small state perturbations).

Sergey P. Kuznetsov; Igor R. Sataev

2006-09-04T23:59:59.000Z

466

Julie Crenshaw Van Fleet  

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

in any of the emitted pollutants, harm to health, or a nuisance that causes people to cough? During December of 2006 the PRGS did operate at full capacity due to a PEPCO repair....

467

Bruno Van Wonterghem  

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 someone6Energy, science, and technology for the researchAreyBruceBruno

468

Bruno Van Wonterghem  

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 someone6Energy, science, and technology for the

469

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

470

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

471

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

472

E-Print Network 3.0 - amphibolitised mafic dykes Sample Search...  

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

of oxidized, S-rich mafic magmas for giant Cu mineralization: Evidence from Pinatubo, Bingham Canyon and El Teniente Summary: Role of oxidized, S-rich mafic magmas for giant Cu...

473

An Archean Oceanic Felsic Dyke Swarm In A Nascent Arc- The Hunter Mine  

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: 160 East 300Algoil JumpAltergy SystemsAmericanAmphenol Corporation

474

Page 320 Courses: Geology (GEOL) Sonoma State University 2010-2011 Catalog GeOl 303 AdVAnCed prinCipleS Of GeOlOGy (4)  

E-Print Network [OSTI]

Page 320 Courses: Geology (GEOL) Sonoma State University 2010-2011 Catalog GeOl 303 AdVAnCed prinCipleS Of GeOlOGy (4) Lecture, 3 hours; laboratory, 3 hours. Advanced treatment of the principles, meth- ods and tools of geology emphasizing the materials that constitute the earth and the processes that act or have

Ravikumar, B.

475

One-Loop Dominance in the Imaginary Part of the Polarizability: Application to Blackbody and Non-Contact van der Waals Friction  

E-Print Network [OSTI]

Phenomenologically important quantum dissipative processes include black-body friction (an atom absorbs counterpropagating blue-shifted photons and spontaneously emits them in all directions, losing kinetic energy) and non-contact van der Waals friction (in the vicinity of a dielectric surface, the mirror charges of the constituent particles inside the surface experience drag, slowing the atom). The theoretical predictions for these processes are modified upon a rigorous quantum electrodynamic (QED) treatment, which shows that the one-loop "correction" yields the dominant contribution to the off-resonant, gauge-invariant, imaginary part of the atom's polarizability at room temperature, for typical atom-surface interactions. The tree-level contribution to the polarizability dominates at high temperature.

U. D. Jentschura; G. Lach; M. De Kieviet; K. Pachucki

2014-11-11T23:59:59.000Z

476

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

477

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

478

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...

479

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

480

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 "vi van dyke" 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

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

482

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

483

ORNL/TM-2001/280 Analysis of CHP Potential  

E-Print Network [OSTI]

ORNL/TM-2001/280 Analysis of CHP Potential at Federal Sites February 2002 S. W. Hadley K. L. Kline OF CHP POTENTIAL AT FEDERAL SITES S. W. Hadley K. L. Kline S. E. Livengood J. W. Van Dyke February 2002 for the U.S. DEPARTMENT OF ENERGY under contract no. DE-AC05-00OR22725 #12;Federal CHP Potential #12;Federal

Oak Ridge National Laboratory

484

de Haas{endash}van Alphen and Shubnikov{endash}de Haas oscillations in RAgSb{sub 2} (R=Y, La-Nd, Sm)  

SciTech Connect (OSTI)

de Haas{endash}van Alphen and Shubnikov{endash}de Haas oscillations have been used to study the Fermi surface of the simple tetragonal RAgSb{sub 2} series of compounds with R=Y, La-Nd, and Sm. The high quality of the flux-grown single crystals, coupled with very small extremal cross sections of Fermi surface, allow the observation of quantum oscillations at modest fields (H{lt}30&hthinsp;kG) and high temperatures (up to 25 K in SmAgSb{sub 2}). For H{parallel}c, the effective masses, determined from the temperature dependence of the amplitudes, are quite small, typically between 0.07 and 0.5m{sub 0}. The topology of the Fermi surface was determined from the angular dependence of the frequencies for R=Y, La, and Sm. In SmAgSb{sub 2}, antiferromagnetic ordering below 8.8 K is shown to dramatically alter the Fermi surface. For LaAgSb{sub 2} and CeAgSb{sub 2}, the effect of applied hydrostatic pressure on the frequencies was also studied. Finally, the experimental data were compared to the Fermi surface calculated within the tight-binding linear muffin-tin orbital approximation. Overall, the calculated electronic structure was found to be consistent with the experimental data. {copyright} {ital 1999} {ital The American Physical Society}

Myers, K.D.; Budko, S.L.; Antropov, V.P.; Harmon, B.N.; Canfield, P.C. [Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)] [Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States); Lacerda, A.H. [National High Field Laboratory, Los Alamos Facility, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [National High Field Laboratory, Los Alamos Facility, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

1999-11-01T23:59:59.000Z

485

de Haas[endash]van Alphen and Shubnikov[endash]de Haas oscillations in RAgSb[sub 2] (R=Y, La-Nd, Sm)  

SciTech Connect (OSTI)

de Haas[endash]van Alphen and Shubnikov[endash]de Haas oscillations have been used to study the Fermi surface of the simple tetragonal RAgSb[sub 2] series of compounds with R=Y, La-Nd, and Sm. The high quality of the flux-grown single crystals, coupled with very small extremal cross sections of Fermi surface, allow the observation of quantum oscillations at modest fields (H[lt]30 hthinsp;kG) and high temperatures (up to 25 K in SmAgSb[sub 2]). For H[parallel]c, the effective masses, determined from the temperature dependence of the amplitudes, are quite small, typically between 0.07 and 0.5m[sub 0]. The topology of the Fermi surface was determined from the angular dependence of the frequencies for R=Y, La, and Sm. In SmAgSb[sub 2], antiferromagnetic ordering below 8.8 K is shown to dramatically alter the Fermi surface. For LaAgSb[sub 2] and CeAgSb[sub 2], the effect of applied hydrostatic pressure on the frequencies was also studied. Finally, the experimental data were compared to the Fermi surface calculated within the tight-binding linear muffin-tin orbital approximation. Overall, the calculated electronic structure was found to be consistent with the experimental data. [copyright] [ital 1999] [ital The American Physical Society

Myers, K.D.; Budko, S.L.; Antropov, V.P.; Harmon, B.N.; Canfield, P.C. (Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)); Lacerda, A.H. (National High Field Laboratory, Los Alamos Facility, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States))

1999-11-01T23:59:59.000Z

486

On the Accuracy of van der Waals Inclusive Density-Functional Theory Exchange-Correlation Functionals for Ice at Ambient and High Pressures  

E-Print Network [OSTI]

Density-functional theory (DFT) has been widely used to study water and ice for at least 20 years. However, the reliability of different DFT exchange-correlation (xc) functionals for water remains a matter of considerable debate. This is particularly true in light of the recent development of DFT based methods that account for van der Waals (vdW) dispersion forces. Here, we report a detailed study with several xc functionals (semi-local, hybrid, and vdW inclusive approaches) on ice Ih and six proton ordered phases of ice. Consistent with our previous study [Phys. Rev. Lett. 107, 185701 (2011)] which showed that vdW forces become increasingly important at high pressures, we find here that all vdW inclusive methods considered improve the relative energies and transition pressures of the high-pressure ice phases compared to those obtained with semi-local or hybrid xc functionals. However, we also find that significant discrepancies between experiment and the vdW inclusive approaches remain in the cohesive properties of the various phases, causing certain phases to be absent from the phase diagram. Therefore, room for improvement in the description of water at ambient and high pressures remains and we suggest that because of the stern test the high pressure ice phases pose they should be used in future benchmark studies of simulation methods for water.

Biswajit Santra; Ji?í Klimeš; Alexandre Tkatchenko; Dario Alfè; Ben Slater; Angelos Michaelides; Roberto Car; Matthias Scheffler

2014-08-14T23:59:59.000Z

487

Including screening in van der Waals corrected density functional theory calculations: The case of atoms and small molecules physisorbed on graphene  

SciTech Connect (OSTI)

The Density Functional Theory (DFT)/van der Waals-Quantum Harmonic Oscillator-Wannier function (vdW-QHO-WF) method, recently developed to include the vdW interactions in approximated DFT by combining the quantum harmonic oscillator model with the maximally localized Wannier function technique, is applied to the cases of atoms and small molecules (X=Ar, CO, H{sub 2}, H{sub 2}O) weakly interacting with benzene and with the ideal planar graphene surface. Comparison is also presented with the results obtained by other DFT vdW-corrected schemes, including PBE+D, vdW-DF, vdW-DF2, rVV10, and by the simpler Local Density Approximation (LDA) and semilocal generalized gradient approximation approaches. While for the X-benzene systems all the considered vdW-corrected schemes perform reasonably well, it turns out that an accurate description of the X-graphene interaction requires a proper treatment of many-body contributions and of short-range screening effects, as demonstrated by adopting an improved version of the DFT/vdW-QHO-WF method. We also comment on the widespread attitude of relying on LDA to get a rough description of weakly interacting systems.

Silvestrelli, Pier Luigi; Ambrosetti, Alberto [Dipartimento di Fisica e Astronomia, Università di Padova, via Marzolo 8, I–35131 Padova, Italy and DEMOCRITOS National Simulation Center of the Italian Istituto Officina dei Materiali (IOM) of the Italian National Research Council (CNR), Trieste (Italy)] [Dipartimento di Fisica e Astronomia, Università di Padova, via Marzolo 8, I–35131 Padova, Italy and DEMOCRITOS National Simulation Center of the Italian Istituto Officina dei Materiali (IOM) of the Italian National Research Council (CNR), Trieste (Italy)

2014-03-28T23:59:59.000Z

488

van der Waals-corrected Density Functional Theory simulation of adsorption processes on transition-metal surfaces: Xe and graphene on Ni(111)  

E-Print Network [OSTI]

The DFT/vdW-WF2s1 method, recently developed to include the van der Waals interactions in the Density Functional Theory and describe adsorption processes on metal surfaces by taking metal-screening effects into account, is applied to the case of the interaction of Xe and graphene with a transition-metal surface, namely Ni(111). In general the adsorption of rare-gas atoms on metal surfaces is important because is prototypical for physisorption processes. Moreover, the interaction of graphene with Ni(111) is of particular interest for practical applications (efficient and large-scale production of high-quality graphene) and, from a theoretical point of view, is particularly challenging, since it can be described by a delicate interplay between chemisorption and physisorption processes. The first-principles simulation of transition metals require particular care also because they can be viewed as intermediate systems between simple metals and insulating crystals. Even in these cases the method performs well as d...

Silvestrelli, Pier Luigi

2015-01-01T23:59:59.000Z

489

van de Gevel -CV1 SASKIA L. VAN DE GEVEL  

E-Print Network [OSTI]

development of the Illinois Ozark Hills. Study Abroad Course: Forest Ecology in Ireland INTERESTS Endangered Mountain Forest Ecosystems, Dendroecology, Biogeography, and Climate in the Northern Rocky Mountains, U.S.A. M.S. Forest Ecology, Southern Illinois University

490

van de Gevel -CV1 SASKIA L. VAN DE GEVEL  

E-Print Network [OSTI]

on the forest development of the Illinois Ozark Hills. Study Abroad Course: Forest Ecology of the Illinois Ozark Hills, funded by 2000­2002 Trail of Tears State Forest, Illinois Department INTERESTS Endangered Mountain Forest Ecosystems, Dendrochronology, Biogeography, and Global

Thaxton, Christopher S.

491

Plasmonen uit sandwich van twee  

E-Print Network [OSTI]

plasmonenbron kan zo een brug slaan tussen de optica, met licht als informatiedrager, en de elektronica, met

Polman, Albert

492

Marco van Hulten Curriculum Vitae  

E-Print Network [OSTI]

· MSc History and Foundations of Physics (degree received in 2009) · BSc High Performance Computing, Physics (specialisation: High performance computing) 1992 ­ 1999 Secondary education Work experience2 2009

Haak, Hein

493

Xander van Tilburg Laura Wrtenberger  

E-Print Network [OSTI]

Centre of the Netherlands (ECN) September 2011 Paving the way for low-carbon development strategies #12;i., It should bring stakeholders from government, the private sector and civil society on the same page not be made obligatory. Energy research Centre of the Netherlands (ECN) #12;ii The Energy research Centre

494

vanDuin_ReaxFF  

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 energy consumption byAbout SRNLBuildingsScattering atTh e Hanford AdvisoryVoltage

495

Long-Range Pseudorapidity Correlations at High pT in sqrt(S_NN) = 200 GeV Au+Au Collisions with STAR  

E-Print Network [OSTI]

! That was a skill that I called upon a few vi times during the writing of this document. I would also like to thank Marco van Leeuwen, you were very helpful to me in the early days as I began my work in STAR: You always provided detailed responses to all....1.1.Method 1 . . . . . . . . . . . . . . . . . 115 V.4.1.2.Method 2 . . . . . . . . . . . . . . . . . 116 V.4.2. Systematic Error . . . . . . . . . . . . . . . . . 117 VI RESULTS AND DISCUSSION : : : : : : : : : : : : : : : : : : : 118 VI.1. Consistency...

Codrington, Martin John Michael

2012-10-19T23:59:59.000Z

496

Parental magma of the Skaergaard intrusion: constraints from melt inclusions in primitive troctolite blocks and FG-1 dykes  

E-Print Network [OSTI]

Yb and \\20% for Er. Rare earth element compositions of theTable 2 Major- and rare earth elements concentrations in FG-the middle- to heavy-rare earth elements, expressed by Dy/Yb

2010-01-01T23:59:59.000Z

497

Bepaling van het effect van een stralingsafscherming op de meting van  

E-Print Network [OSTI]

.4 Temperatuursensor zonder stralingafscherming 20 §2.5 Cabauw psychro-opstelling 20 §2.6 DWD opstelling 21 §2.7 FLIR E

Haak, Hein

498

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

499

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

500

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....