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


Energy Storage Management for VG Integration (Presentation), NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Storage Management for VG Integration Energy Storage Management for VG Integration UWIG FALL TECHNIICAL WORKSHOP Brendan Kirby National Renewable Energy Laboratory Consultant October 13, 2011 NREL/PR-5500-53295 Photo by NREL/PIX 19498 National Renewable Energy Laboratory Innovation for Our Energy Future Increases Value Through Optimized Ancillary Service (AS) Provision: Pumped Storage Generator Example (320 MW pump, 200-400 MW gen, 40 MW reg, 200 MW spin, 400 MW non) * Total profits increased 133%; * Energy profits reduced -48%; * Regulation profits added +41%; * Spinning profits added +89%; * Non-Spin profits added +50%. CAISO market modeled for all 2010


Sandia VG Template  

NLE Websites -- All DOE Office Websites (Extended Search)

Company for the United States Company for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. * DOE/ARM = Dept of Energy/Atmospheric Radiation Measurement, DOE's principal climate research program; www.arm.gov DOE/ARM UAS Plans Through Sandia, DOE/ARM* is putting in place a UAS (Unmanned Aircraft Systems) hosting capability on the North Slope of Alaska ARM Climate Research Facilities (ACRF) already exist at Barrow and Atqasuk; DOE/ARM restricted airspace exists at Oliktok Point; only restricted airspace on the North Slope of Alaska Atqasuk ACRF UAS Basing Capability: Restricted Airspace R2204 along with Permit to Use the USAF Oliktok Point Radar Station Facilities under R2204 Oliktok Point USAF Long Range Radar Station



National Nuclear Security Administration (NNSA)

Deviatoric Deviatoric Constitutive Model Domain of Strain Rate Validity M.A. Zocher, 1 V.A. Raevsky, 2 O.N. Ignatova, 2 1 Los Alamos National Laboratory (LANL) 2 All-Russia Scientific Research Institute of Experimental Physics (VNIIEF) US-Russia Conference on Advances in Materials Science Prague, Czech Republic Aug 30 - Sep 4, 2009 Initial Boundary Value Problem Mechanical Load Thermal "Load" ∂Ω 1 ∂Ω T 1 x 3 x 2 x 1 CM ∂ρ ∂t + ( ρu i ) ,i = 0 CLM ∂ ∂t ( ρu i ) + ρu i u j ,j = σ ji,j + ρf i CE ∂ ∂t ( ρh ) + ( ρhu i ) ,i = σ ji D ij -q i,i +ρr + dp dt +pu i,i D ij = 1 2 v i,j + v j,i u i = u i on ∂Ω 1 θ = θ on ∂Ω T 2 T i = σ ji n j = T on ∂Ω 2 k ij θ ,i n j = T T on ∂Ω T 2 θ ( x k , t ) = 0 u i ( x k , t ) = 0 for t < 0 σ ij ( x k , t ) = 0 ∂Ω 1 ∪ ∂Ω 2 = ∂Ω and ∂Ω 1 ∩ ∂Ω 2 = ∅ ∂Ω T 1 ∪ ∂Ω T 2 = ∂Ω and ∂Ω T 1 ∩ ∂Ω T 2 = ∅ σ ij = σ ij { kl , ˙ kl , T, T k , . . .} Classical Plasticity 4 Parts: (1) stress-strain


1 (Grids_Overview.v.11.VG.fm, 4/14/00)wejohnston@lbl.gov, www.itg.lbl.gov/~wej LBNL and NASA Ames Research Center Computational, Data, and  

E-Print Network (OSTI)

diesel engines, next generation space shuttle, etc. #12;5 (Grids_Overview.v.11.VG.fm, 4/14/00)wejohnston, the DoE Diesel Combustion Collaboratory [5] aims to reduce geographical barriers to information transfer's synchrotron light sources, PNNL's gigahertz NMR machines, etc. Coupling of laboratory instrument experiments


Energy Storage Management for VG Integration (Presentation)  

SciTech Connect

This presentation describes how you economically manage integration costs of storage and variable generation.

Kirby, B.




Science Journals Connector (OSTI)

Jun 17, 1991 ... EK-400 echosounder (SIMRAD, Norway) with towed body at a ... drift of the anchored vessel caused by wind ..... and energy in reservoirs.



(Vg = 2 volts, Fp = 3,7 volts). Dans le circuit  

E-Print Network (OSTI)

the process is incom- plete. But since it is advantageous to have thermionic convertors workingat temperatures and the latter was used simultaneously for the ionization process. In general, when the energy to be converted

Paris-Sud XI, Université de


Lemma 2. If vg [(1/14)v(2)g , (2/7)v(2)g ], then there exists a fully revealing ex ante equilibrium such that voter vg demands two votes, v(2)g randomizes between demanding one  

E-Print Network (OSTI)

M S = v(2)m p/2 + (1 - v(2)m )p EUviM D2 = vM v(2)m (viM /2 - p) + vM (1 - v(2)m )(viM - 2p)/3+ + (1 - vM )2v(2)m (viM - p)/3 EUviM D1 = vM v(2)m (-p) + vM (1 - v(2)m )(-2p/3)+ + (1 - vM )v(2)m (2viM - p)/3 + (1 - vM )(1 - v(2)m )(viM - p)/2 EUviM 0 = (1 - vM )v(2)m viM /2 EUviM S = vM v(2)m p/2 + vM (1 - v(2

Faraon, Andrei


Ammonia and urea treatment of wheat straw and corn stover JP Fontenot E Gallo Llorente, JM Obamahinti, VG Allen  

E-Print Network (OSTI)

by ammoniation directly or by urea treatment, but the improvement appears to be greater for ammonia than urea

Boyer, Edmond


REVUE DE PHYSIQUE APPLIQUE Simulation d'un transistor MOS silicium-sur-isolant dsertion profonde  

E-Print Network (OSTI)

tensions de grilles avant (Vg1) et arrière (Vg2) appliquées. Nous dédui- sons aussi les caractéristiques Id(Vg1, Vg2) à faible tension de drain. Les caractéristiques Id(Vg2) simulées sont comparées aux caractéristiques Id(Vg2) obtenues avec des transistors CMOS/SOS. Le saphir de ces dispositifs a été localement

Boyer, Edmond


Project Sponsors:UCI Combustion Laboratory www.ucicl.uci.edu  

E-Print Network (OSTI)

. Sullivan-Lewis, V.G. McDonell, R.L. Hack, (2011). Evaluation of a Rich Burn, Quick Mix, Lean Burn States Section of the Combustion Institute E. Sullivan-Lewis, V.G. McDonell, R.L. Hack, (2011 Sullivan-Lewis Undergraduate Students: Anthony Jordan Staff: R.L. Hack Principal Investigator: V.G. Mc

Mease, Kenneth D.


E-Print Network 3.0 - activin receptor-like kinase Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Medicine ; Environmental Sciences and Ecology 12 INTRODUCTION The endoderm is the germ layer which forms the gut lining and Summary: ). Activin or processed Vg-1 are capable of...


United States Department of the Interior Fish and Wildlife Service  

E-Print Network (OSTI)

Serves 6 3 tablespoons minced celery 1/3 teaspoon salt 6 drops tabasco sauce Mix the last fiVG ingredi


cDNA cloning and transcriptional regulation of the vitellogenin receptor from the imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae)  

E-Print Network (OSTI)

reverse transcription polymerase chain reaction (RT-PCR) and both 5?- and 3?- rapid amplification of cDNA ends (RACE), cDNA fragments encompassing the entire coding region of a putative VgR from fire ant (= SiVgR) were cloned and sequenced. The complete Si...

Chen, Mei-Er



Vitellogenin Receptor and Neuropeptide Receptors Involved in Reproduction of the Red Imported Fire Ant (Solenopsis invicta Buren)  

E-Print Network (OSTI)

castes or overall reproductive outcome, diminishing the fire ant impact as invasive pest. Fire ant virgin queens have more abundant VgR (SiVgR) transcripts than newly-mated queens, but limited egg formation. To elucidate whether queen maturation...

Lu, Hsiao Ling



PUBLISHED ONLINE: 3 APRIL 2011 | DOI: 10.1038/NPHYS1962 Tunable Kondo effect in graphene with defects  

E-Print Network (OSTI)

previously reported the resistivity of graphene with vacancies induced by ion irradiation in ultra) dependence of the resistivity (Vg, T) in similar graphene with vacancies over a wider temperature range 300 mK after irradiation, and measured at 300 mK after annealing and transfer to the 3 He cryostat. Vg

Loss, Daniel


Prediction of refrigerant-lubricant viscosity using the general PC-SAFT friction theory  

Science Journals Connector (OSTI)

Abstract In this work, a friction theory (f-theory) viscosity model founded on the perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state (EoS) was used to calculate the viscosity of refrigerant-oil mixtures. The model, which links viscosity to the repulsive and attractive pressure terms of the PC-SAFT EoS, can provide satisfactory viscosity predictions of mixtures of carbon dioxide (R-744) and two synthetic lubricants, namely, a polyolester (POE) ISO VG 68 and an alkylbenzene (AB) ISO VG 32, as well as mixtures of isobutane (R-600a) and two other synthetic lubricants, a POE ISO VG 7 and an AB ISO VG 5. The root-mean square (RMS) deviations related to the viscosity prediction were 0.69% (R-600a/POE ISO 7), 0.99% (R-600a/AB ISO VG 5), 3.16% (R-744/POE ISO VG 68) and 3.18% (R-744/AB ISO VG 32).

Moiss A. Marcelino Neto; Jader R. Barbosa Jr.



Systematic Comparison of Operating Reserve Methodologies: Preprint  

SciTech Connect

Operating reserve requirements are a key component of modern power systems, and they contribute to maintaining reliable operations with minimum economic impact. No universal method exists for determining reserve requirements, thus there is a need for a thorough study and performance comparison of the different existing methodologies. Increasing penetrations of variable generation (VG) on electric power systems are posed to increase system uncertainty and variability, thus the need for additional reserve also increases. This paper presents background information on operating reserve and its relationship to VG. A consistent comparison of three methodologies to calculate regulating and flexibility reserve in systems with VG is performed.

Ibanez, E.; Krad, I.; Ela, E.



CX-010116: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

Operation, Maintenance, and End of Life of VG PlasmaQuad II ICPMS Units CX(s) Applied: B3.6 Date: 03/28/2013 Location(s): South Carolina Offices(s): Savannah River Operations Office


Awards | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Prize at Supercomputing 2013 (SC13) in Denver, CO for the record-setting high performance computing calculation on Sequoia. (Right Image courtesy of Petros Koumoutsakos zVgCSE...

Note: This page contains sample records for the topic "vg vg vg" 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.


E-Print Network 3.0 - analyze va shenasai Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

is how an organism Summary: 12;87Analyzing the effect of wind on flight migration dataset (APM) between Va and Vg-Va using... . Furthermore, we focus on the analysis of air...


The Minimum Rank Problem for Outerplanar Graphs.  

E-Print Network (OSTI)

??Given a simple graph G with vertex set V(G)={1,2,...,n} define S(G) to be the set of all real symmetric matrices A such that for all (more)

Sinkovic, John Henry



Strategies for Mitigating the Reduction in Economic Value of Variable Generation with Increasing Penetration Levels  

SciTech Connect

In this report, we evaluate individual options that have the potential to stem the decline in the marginal value of variable generation (VG) with increasing penetration levels. We focus only on the effectiveness of mitigation measures for wind and PV.

Mills, Andrew; Wiser, Ryan



E-Print Network 3.0 - arnas barkus agnius Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

University of London Collection: Biology and Medicine 24 Fortlpande miljanalys vid SLU P god vg mot miljmlen i skogen Summary: undantag fr den hrda dda veden i norra Sverige...


Simple Constructive Weak Factorization - Department of ...  

E-Print Network (OSTI)

as the union of open subschemes Vgi. = Ugi . The algebra. K[Vgi ]? = K[V ]? gi. = K[U]gi the localization of K[V ] so there is an open inclu- sion Vg/? ? U/? and...



Metabolic Engineering of the Regulators in Nitrogen Catabolite Repression To Reduce the Production of Ethyl Carbamate in a Model Rice Wine System  

Science Journals Connector (OSTI)

...03602531003611915 . 7. Cadranel, JF , C Legendre, B Desaint, N Delamarre, C Florent and VG Levy. 1993. Liver disease from surreptitious administration of urethane. J. Clin. Gastroenterol. 17 :52-56. doi: 10.1097/00004836-199307000-00015...

Xinrui Zhao; Huijun Zou; Jianwei Fu; Jingwen Zhou; Guocheng Du; Jian Chen



Thermal inertia mapping and its application in mineral exploration: results from Mamandur polymetal prospect, India  

Science Journals Connector (OSTI)

......fractures in hard rock. Renewable Energy (2003) 28(14...Satellite data can cost effectively show oil...in Baja, California. Energy Resources on the Pacific...Zolotarev V.G. Thermal and energy factors of metal concentration......

D. Ramakrishnan; Rishikesh Bharti; K.D. Singh; M. Nithya



Absorption and emission in quantum dots: Fermi surface effects of Anderson excitons R. W. Helmes,1 M. Sindel,1 L. Borda,1,2 and J. von Delft1  

E-Print Network (OSTI)

. We predict two features: First, we find that the spectrum shows a power-law divergence closeAs monolayer, called "wetting layer" WL , like islands in an ocean. Above a certain value of Vg, the conduction

von Delft, Jan


Graph Theory: Problem Set 2 Jan 21, 2013  

E-Print Network (OSTI)

of G if uNG(v) ((v) - (u)) = 0. Show that G has at least two poles. Solution. Let Amax = {v | (v) is maximum} VG. Since is not a constant function, Amax is a nonempty proper subset of VG. Let A Amax be the set of those vertices v for which there exists a vertex u / Amax such that vu G. Since G is connected

Harju, Tero


Probabilistic Approach to Quantifying the Contribution of Variable Generation and Transmission to System Reliability: Preprint  

SciTech Connect

The increasing electrical load served by variable generation (VG), such as wind and solar energy, in the United States and many other countries has stimulated an interesting line of research to better quantify the capacity value of these resources. Methods applied traditionally to thermal units based on their average outage rates do not apply to VG because of their uncertain and non-dispatchable nature. The North American Electric Reliability Corporation's Integration of Variable Generation Task Force recently released a report that highlighted the need to develop and benchmark underlying loss-of-load expectation and related metrics that reasonably and fairly calculate the contribution to planning reserves, or capacity value, of solar and wind power. As the fraction of generation coming from VG becomes more significant, their estimated capacity value will have a larger impact on system planning. In this paper, we provide a method to include VG in traditional probabilistic-based adequacy methods. This method has been implemented in the Renewable Energy Probabilistic Resource Assessment tool developed at the National Renewable Energy Laboratory. Through an example based on the U.S. Western Interconnection, this method is applied to assess the effect that transmission can have on resource adequacy. We also analyze the interactions between available transmission and capacity value for VG.

Ibanez, E.; Milligan, M.



Workbook Contents  

U.S. Energy Information Administration (EIA) Indexed Site

" " ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","NGPL Production, Gaseous Equivalent ",1,"Monthly","9/2013","1/15/1973" ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","ng_prod_pp_a_epg0_vg9_mmcf_m.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/ng/ng_prod_pp_a_epg0_vg9_mmcf_m.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.gov" ,,"(202) 586-8800",,,"12/19/2013 7:02:18 AM"


Project Listings by Organization; DOE Hydrogen Program FY 2008 Annual Progress Report  

NLE Websites -- All DOE Office Websites (Extended Search)

7 7 FY 2008 Annual Progress Report DOE Hydrogen Program 3M Company V.C.1 Advanced Cathode Catalysts and Supports for PEM Fuel Cells. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .861 V.G.5 Membranes and MEAs for Dry, Hot Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .962 V.G.8 Novel Approaches to Immobilized Heteropoly Acid (HPA) Systems for High Temperature, Low Relative Humidity Polymer-Type Membranes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 978 A Mountain Top, LLC X.8 HyDRA: Hydrogen Demand and Resource Analysis Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1275 Addison Bain VIII.6 Hydrogen Safety Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1202


Workbook Contents  

U.S. Energy Information Administration (EIA) Indexed Site

at Processing Plants " at Processing Plants " ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","NGPL Production, Gaseous Equivalent at Processing Plants ",1,"Monthly","9/2013","1/15/1973" ,"Release Date:","12/12/2013" ,"Next Release Date:","1/7/2014" ,"Excel File Name:","ng_prod_sum_a_epg0_vg9_mmcf_m.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/ng/ng_prod_sum_a_epg0_vg9_mmcf_m.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.gov"


Addressing Water Contamination  

E-Print Network (OSTI)

biobed to become water-logged, which compromises the efficiency of the degradation mechanism. Technology of space. Moreover, the VG Biobed is more efficient. It relies on "evapo- transpiration" of water by plants, rather than simple evaporation, and soil activity, to clean the water; under this approach, efficient

Loewith, Robbie


Labeling trees with a condition at distance two  

Science Journals Connector (OSTI)

For positive integers j ? k, an L(j, k)-labeling of graph G is an integer labeling of V(G) such that adjacent vertices receive labels which differ by at least j, and vertices that are distance two apart receive ... Keywords: ?j,k-labeling, infinite regular tree, vertex labeling

John P. Georges; David W. Mauro



On Regular Graphs Optimally Labeled with a Condition at Distance Two  

Science Journals Connector (OSTI)

For positive integers $j \\geq k$, the $\\lambda_{j,k}$-number of graph G is the smallest span among all integer labelings of V(G) such that vertices at distance two receive labels which differ by at least k and adjacent vertices ... Keywords: $L(j, k)$-labeling, prism, regular graph

John P. Georges; David W. Mauro



Notes: A note on collections of graphs with non-surjective lambda labelings  

Science Journals Connector (OSTI)

The @l-number of a graph G, denoted @l(G), is the smallest integer k such that there exists a function from V(G) into {0,1,2,...,k} under which adjacent vertices receive integers which differ by at least 2 and vertices at distance two receive integers ... Keywords: ?-Labeling, ?-Number, 05C, L(2,1)-Labeling, Surjective

John P. Georges; David W. Mauro



Labeling Products of Complete Graphs with a Condition at Distance Two  

Science Journals Connector (OSTI)

For integers $j \\geq k$, an L(j,k)-labeling of a graph G is an integer labeling of the vertices in V(G) such that adjacent vertices receive integers which differ by at least j, and vertices which are distance ... Keywords: $\\lambda^j_k$-labeling, Cayley graph, product of complete graphs, vertex labeling

John P. Georges; David W. Mauro; Melanie I. Stein



On the $\\lambda$-Number of $Q_n$ and Related Graphs  

Science Journals Connector (OSTI)

An $L(2, l)$-labeling of graph $G$ is an integer labeling of $V(G)$ such that adjacent vertices have labels that differ by at least 2 and such that vertices distance 2 apart have labels that differ by at least 1. The $\\lambda$-number of $G, \\lambda(G)$, ... Keywords: $\\lambda$-labeling, $n$-cube, vertex labeling

Marshall A. Whittlesey; John P. Georges; David W. Mauro



A note on collections of graphs with non-surjective lambda labelings  

Science Journals Connector (OSTI)

The ?-number of a graph G, denoted ?(G), is the smallest integer k such that there exists a function from V(G) into {0, 1, 2,..., k} under which adjacent vertices receive integers which differ by at least ... Keywords: ?-labeling, ?-number, L(2, 1)-labeling, surjective

John P. Georges; David W. Mauro


Note: This page contains sample records for the topic "vg vg vg" 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.


On generalized Petersen graphs labeled with a condition at distance two  

Science Journals Connector (OSTI)

An L(2, 1)-labeling of graph G is an integer labeling of the vertices in V(G) such that adjacent vertices receive labels which differ by at least two, and vertices which are distance two apart receive labels which differ by at least ... Keywords: ?-number, 3-regular graphs, L(2,1)-labeling, generalized Petersen graph

John P. Georges; David W. Mauro



Electronics MOS Field-Effect Transistors  

E-Print Network (OSTI)

Department of Electrical and Computer Engineering #12;NMOS Physical StructureNMOS Physical Structure p-Martinez - 1 - Jose Silva-Martinez Texas A&M University Department of Electrical Engineering Analog and Mixed substrate N+ N+ VS=0 VG>0 VD=0 P P+ B D S B G N-type transistorInversion: channel is created D-S current

Palermo, Sam


Global patterns of marine mammal, seabird, and sea turtle bycatch reveal taxa-specific and cumulative megafauna hotspots  

Science Journals Connector (OSTI)

...Gallo, B.M.G., Dos Santos, S., Azevedo, V.G...149 Kotas, J.E., S. dos Santos, V.G...Instituto Nacional de la Pesca 231 Santos, R.C.A., Soto, J...Soto, Jules M.R., and Rodrigo C. P. Beheregaray 1997 Chelonia...

Rebecca L. Lewison; Larry B. Crowder; Bryan P. Wallace; Jeffrey E. Moore; Tara Cox; Ramunas Zydelis; Sara McDonald; Andrew DiMatteo; Daniel C. Dunn; Connie Y. Kot; Rhema Bjorkland; Shaleyla Kelez; Candan Soykan; Kelly R. Stewart; Michelle Sims; Andre Boustany; Andrew J. Read; Patrick Halpin; W. J. Nichols; Carl Safina



On minimum balanced bipartitions of triangle-free graphs  

Science Journals Connector (OSTI)

A balanced bipartition of a graph G is a partition of V(G) into two subsets V 1 and V 2 that differ in cardinality by at most 1. A minimum balanced bipartition of G ... Keywords: Balanced bipartition, Planar graphs, Triangle-free graphs

Haiyan Li; Yanting Liang; Muhuo Liu; Baogang Xu



Field Metabolic Rate and PCB Adipose Tissue Deposition Efficiency in East Greenland Polar Bears Derived from  

E-Print Network (OSTI)

Environmental Protection Agency within the Danish Cooperation for Environment in the Arctic (DANCEA). The early, if the modelled CB153 deposition efficiency were 10%, adult polar bears would require six times more energy than/index_en.cfm, VP JNN VG. The research on contamination of ringed seals was funded by the Danish

Schierup, Mikkel Heide


Experimental Dynamic Forced Performance of a Centrally Grooved, End Sealed Squeeze Film Damper  

E-Print Network (OSTI)

the damper lands. An ISO VG2 lubricant is supplied to the SFD via three radial holes that discharge lubricant into the central groove. The lubricant passes through the damper lands and across the piston ring seals to finally exit the damper at ambient...

Mahecha Mojica, Lady Paola




E-Print Network (OSTI)

ellite, with t 6 he dist 6 uF rb 5 ances in t 6 he magnet 6 osp8 heric magneti 6 c field measuF red ress t 6 he magnet 6 osp8 here and resuF lt in a similar vG ariati 6 on in t 6 he magnet 6 osp8 heric

Richardson, John


Vikki G. Nolan University of Memphis, School of Public Health  

E-Print Network (OSTI)

in Sickle Cell Disease; Gerontology, New England Centenarian Study 11/2000 ­ 9/2002 New York City Department with sickle cell disease in Memphis, TN. (In preparation) Smeltzer M, Nolan VG, Gurney J, Nottage K, Hankins J. Incidence of Sickle Cell Trait and Sickle Cell Disease in Shelby County, TN compared with Rio de Janeiro

Dasgupta, Dipankar



E-Print Network (OSTI)

THE TUKEY ORDER FOR GRAPHS 1. Introduction Given a graph G, we let VG stand for the vertex set of G. For graphs G without isolated vertices, the Tukey order can be characterized thus: () G H iff there exist) is called a (generalized) Galois-Tukey connection (abbreviated GT-connection) from R to S if the following

Nyikos, Peter J.


Atomic ordering at an amorphous/crystal interface Naoya Shibataa  

E-Print Network (OSTI)

were taken with a dedicated 300 kV VG Microscopes, HB603U STEM equipped with aberration corrector Nion-corrected Z-contrast scanning transmission electron microscopy STEM with subangstrom resolution,8 which has in Fig. 1 a is shown in Fig. 1 b . Subtracting the smoothed background dashed line a

Pennycook, Steve


suncp@itp.ac.cn http://www.itp.ac.cn/~suncp  

E-Print Network (OSTI)

Superconducting Transmission Line +Charge Qubit 0=n 1=n CJ EJ Vg Cg EJ CJ #12;Quantum Cascade Laser g e g e j aj aj - j aj aj1 h. c. HI |ee| Ja0 |ge| |eg|a0, x #12;( ) ( ) ( ) ( )( ) 1 1k k k k kV E

Sun, Chang-Pu


BNL/SNS TECHNICAL NOTE D. Davino, H. Hahn, M. Blaskiewicz  

E-Print Network (OSTI)

-bars. The first harmonic cavities (h = 1) are designed for a gap voltage of Vg = 10 kV and the second harmonic cavity were made using the standard method [2]; in which a single wire, or a twin-wire "Lecher" line impedance measurements For the longitudinal impedance measurements, the forward transmission coefficients S


Visualizing the Choices: Marginals, Risk Measures &  

E-Print Network (OSTI)

increase, ... area flooded,... population homeless....) Choice of measure to quote (VaR/quantile, CVa tail. Likewise, Platen EPJ-B, Taylor S. Africa data (T, VG). These differ in the detail but agree data moment for a pdf with density decaying like x-4 , x-5 ). 6 PresentationPrint.nb #12;Trying to do better

Shaw, William


LETTER doi:10.1038/nature09866 Controlling inelastic light scattering quantum  

E-Print Network (OSTI)

. Figure 1b shows the electrical resistance curve of a graphene device, which has a charge neutral point- mediate electronic states, which then generate crystal elementary excitations and radiate energy concentration in graphene is controlled by the top gate voltage (Vg). The doping dependence of electrical

Zettl, Alex


Page 1 of 4 Radiogram No. 8382u Form 24 for 02/07/2012  

E-Print Network (OSTI)

L), #1071 (40L) 10:15-10:25 FE-5 VO2max Video Setup 10:15-11:30 FE-6 CFE Hardware Setup 10 Function System Setup 14:25-16:25 FE-6 CFE. VG1 Test 14:40-14:50 FE-5 SOLO Retrieving Measurement Pouch

Waliser, Duane E.


IN THE HEAT OF THE SUMMER Lessons from the heat waves in Paris  

E-Print Network (OSTI)

IN THE HEAT OF THE SUMMER Lessons from the heat waves in Paris E. Cadot1 , V.G. Rodwin2 and A are intertwined1 . The heat waves in Chicago, in 1995, and in Paris, in 2003, followed by Hurricane Katrina summer, from July 27 to August 5th , New York City suffered a mild heat wave with temperatures reaching

Boyer, Edmond


High-performance controllable ambipolar infrared phototransistors based on graphene-quantum dot hybrid  

E-Print Network (OSTI)

The field effect transistors (FETs) exhibited ultrahigh responsivity (107 A/W) to infrared light with great improvement of mobility in graphene / PbS quantum dot (QD) hybrid. These reported transistors are either unipolar or depletion mode devices. In this paper, we presented and fabricated conveniently-controlled grapheme / PbS QD hybrid FETs. Through the investigation on electric and optoelectronic properties, the ambipolar FETs (normally OFF) can be switched ON by raising gate voltage (VG) up to 3.7 V and -0.8 V in the first and third quadrants. Near these thresholds (VT) each carrier species shows comparable mobility (~ 300 cm2V-1s-1). Photo-responsivity reach ~ 107 A/W near each threshold and it will linearly increases with (VG-VT). These hybrid FETs become strongly competitive candidates for devices in flexible integrated circuits with low cost, large area, low-energy consumption and high performances.

Wang, Ran; Wang, Haiyang; Song, Xiaoxian; Jin, Lufan; Dai, Haitao; Wu, Sen; Yao, Jianquan



Distribution of the zooplankton in the salt marshes of southeastern Louisiana  

E-Print Network (OSTI)

~ koceCions in Suu-Area 3. 10 bo Posi f ion of Sfofi ons in sub oreo 3 Scale (miles) Q) Cl (a (c Og~ o / g / P ~LA N Lake A fhanasio 'Q Eloi 8ay IL A N HN~~P Vg Q ~ J~~xp b 0 0 L FF A field laboratory was established ae Hopedale...~ koceCions in Suu-Area 3. 10 bo Posi f ion of Sfofi ons in sub oreo 3 Scale (miles) Q) Cl (a (c Og~ o / g / P ~LA N Lake A fhanasio 'Q Eloi 8ay IL A N HN~~P Vg Q ~ J~~xp b 0 0 L FF A field laboratory was established ae Hopedale...

Cuzon du Rest, Rene Pierre



Towards comprehensive structural motif mining for better fold annotation in the "twilight zone" of sequence dissimilarity  

E-Print Network (OSTI)

: Definition 4 A graph G is approximate subgraph isomorphic to another graph G', denoted by G ?a G' if there exists a 1-1 injection f V[G] to V[G'], such that ?u?V M?(u),?'(f(u)) ? ?, ? u, v ? V, (u, v) ? E ? (f(u), f(v)) ? E', and ? (u, v) ? E, ?(u, v... below. Definition 5 A graph G is subgraph isomorphic to another graph G', denoted by G ? G' if there exists a 1-1 injection f from the node set V of a graph G to V' of a graph G', such that ? u ? V, ?(u) = ?'(f(u)) ? u, v ? V, (u, v) ? E ? (f(u), f(v...

Jia, Yi; Huan, Jun; Buhr, Vincent; Zhang, Jintao; Carayannopoulos, Leonidas N.



Surface effect on domain wall width in ferroelectrics  

E-Print Network (OSTI)

Oct 26, 2009 ... Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA. 3Department of Materials ..... =1,2,5,10,20, curves 1, 2, 3, 4, 5, 6 and dead layer thickness H/R. =1,3 panels a and b, .... No. 3306. The research is supported in part S.V.K. by the. Division of Scientific User Facilities, DOE BES. V.G. wishes.


Note: This page contains sample records for the topic "vg vg vg" 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.


Photo-patterned e-wave polarizer W.C. Yip*, H.S. Kwok, V.M. Kozenkov1  

E-Print Network (OSTI)

Photo-patterned e-wave polarizer W.C. Yip*, H.S. Kwok, V.M. Kozenkov1 , V.G. Chigrinov Center's Republic of China Abstract In this paper, we report our development in the photo-patterned e-wave polarizer and demonstrate two novel fabrication methods to both photo-align and photo-pattern these e-wave polarizers


Viterbi Career Services From: Viterbi Careers [vcareers@usc.edu  

E-Print Network (OSTI)

This Week in the Wire Special Events Career Advising Register for connectSC Resume Submission Deadlines, and special events to help develop your engineering job search skills. Please click below to read what, please RSVP through this website: http://www.surveymonkey.com/s.aspx?sm=pP0YkMhw_2fOhd5SkrANn3vg_3d_3d

McLeod, Dennis


Design of an efficient terahertz source using triply resonant nonlinear photonic  

E-Print Network (OSTI)

. Vodopyanov, M.M. Fejer, X. Yu, J.S. Harris, Y.S. Lee, W.C. Hurlbut, V.G. Kozlov, D. Bliss, C. Lynch, M.E. Fermann, K.L. Vodopyanov, M.M. Fejer, X. Yu, J.S. Harris, D. Bliss, C. Lynch, "High). 11. Y.S. Lee, T. Meade, V. Perlin, H. Winful, T.B. Norris, A. Galvanauskas, "Generation of narrow

Loncar, Marko


1.Given the following five-buspower system (with lOOMVA base): (a) Find the power flow equations.  

E-Print Network (OSTI)

is R = 2 0 Q g find the reflective coefficient. (2) A single phase transmission line having lineY - 69AkV, leakage reactance of 8%. The generator voltage VG is 13.2kV(1ine-teline), the transmission line impedance Zline= 10 + jlOOR, and the load impedance Zlocrd= 300R. Use the per-unit analysis

Huang, Haimei


10.1071/SR10009_AC1 CSIRO 20102  

E-Print Network (OSTI)

-220i-XL,36 VG Scientific, UK) with a monochromatic Al K X-ray source (h = 1486.6eV) induced by 1037 kV transmission electron microscopy (TEM). Samples were examined in a Hitachi 3400 SEM28 (Japan) to which EDS TEM mode (STEM) was32 used to perform EDS mapping and line scans (individual points were taken at 1 nm

Lehmann, Johannes


Page 1 of 3 Radiogram No. 8620u Form 24 for 03/07/2012  

E-Print Network (OSTI)

Inspection 09:30-10:10 FE-6 VO2 Software Calibrations And Instrument Check 09:45-10:00 CDR CFE Maintenance and Video 10:00-11:15 CDR CFE Hardware Setup 10:10-10:50 FE-6 VO2max Experiment Protocol 10:50-11:40 FE-6 VO:15-13:15 CDR CFE VG2 Test 11:30-13:00 FE-4 Physical Exercise (TVIS), Day 4 11:35-11:45 FE-1 Maintenance

Waliser, Duane E.


Page 1 of 3 Radiogram No. 8499u Form 24 for 02/23/2012  

E-Print Network (OSTI)

:15-08:25 CDR CIR Alignment Guide Installation 08:15-08:25 FE-6 BREAKFAST 08:25-08:40 FE-6 CFE Maintenance Work Physical Exercise (ARED) 08:45-09:30 FE-4 BREAKFAST 08:45-10:00 FE-6 CFE Hardware Setup 09:00-09:15 FE-1 for CO using sampler 11:00-13:00 FE-6 CFE. VG2 Test 11:05-12:25 FE-2 Progress 414 Transfers and IMS Ops

Waliser, Duane E.


Page 1 of 3 Radiogram No. 8558u Form 24 for 02/28/2012  

E-Print Network (OSTI)

Conference (S-band) Report To MCC virus scan results 08:05-08:20 FE-6 CFE Maintenance Work Area Prep 08 Transfers and IMS Ops 08:15-09:15 FE-2 Replacing IMV hardware storage bags 08:20-09:35 FE-6 CFE Hardware with specialists 09:35-11:35 FE-6 CFE. VG1 Test 09:40-10:00 FE-1, FE-4 Chibis To Chibis-M Swap (end). Tagup

Waliser, Duane E.


Page 1 of 3 Radiogram No. 8602u Form 24 for 03/05/2012  

E-Print Network (OSTI)

on FGB interior panels (panels 201, 301, 401) 14:00-14:40 FE-2 Maintenance 14:10-14:25 CDR CFE CFE Hardware Setup 14:45-15:15 FE-5 Activation of Portable Pulmonary Function System (PFS) MBS Module:45-17:40 CDR CFE VG2 Test 15:50-16:10 FE-4 RELAXATSIYA. Measurement Session 15:55-16:55 FE-6 Physical Exercise

Waliser, Duane E.


Mass Market Demand Response and Variable Generation Integration Issues: A Scoping Study  

SciTech Connect

This scoping study focuses on the policy issues inherent in the claims made by some Smart Grid proponents that the demand response potential of mass market customers which is enabled by widespread implementation of Advanced Metering Infrastructure (AMI) through the Smart Grid could be the silver bullet for mitigating variable generation integration issues. In terms of approach, we will: identify key issues associated with integrating large amounts of variable generation into the bulk power system; identify demand response opportunities made more readily available to mass market customers through widespread deployment of AMI systems and how they can affect the bulk power system; assess the extent to which these mass market Demand Response (DR) opportunities can mitigate Variable Generation (VG) integration issues in the near-term and what electricity market structures and regulatory practices could be changed to further expand the ability for DR to mitigate VG integration issues over the long term; and provide a qualitative comparison of DR and other approaches to mitigate VG integration issues.

Cappers, Peter; Mills, Andrew; Goldman, Charles; Wiser, Ryan; Eto, Joseph H.



Inhomogeneous Broadening and the Kosterlitz-Thouless Transition  

E-Print Network (OSTI)

variation in p. The numerator is calculated by fixing n, varying A (A = 1 is the background value), and finding the associated variation in p. We have calculated S for models of hydrogen and graphite substrates that are atomically uniform. The model... to the sub- strate, z, is given in A. , and s = 3.6 A.. The potential for graphite, VG. (z), takes the form (16) where e = 48 K and 8 is unchanged, giving a van der 3Waals coefficient of 2240 KA. . The above potential has a minimum at z = 2.75 A...




Threshold shift and above-threshold multiphoton ionization of atomic hydrogen in intense laser fields  

E-Print Network (OSTI)

T is the kinetic energy of the electron. The effec- tive potential V,g is known as the pondermotive potential which can also be regarded as the average oscillating ener- gy of the electron in the field e~,. The latter is very small TABLE II. Intensity... becomes more and more im- portant compared to AEz as N increases or co decreases. The net result is that the ionization potential increases rapidly with both F and N . The disappearance of the lowest energy electrons in the xenon MPI-ATI experiment...

Chu, Shih-I; Cooper, J.



Cooling an electron gas using quantum dot based electronic refrigeration  

E-Print Network (OSTI)

comparable to the Fermi wavelength. Con- finement in the other two directions (x and y) is over large enough distances for the quantisation of momentum in the x-y plane to be neglected. The energy of a carrier with effective mass m? can therefore be written... (negative) current from drain to source. The blue lines show non-zero differential conductance. The angles ?S and ?D are used to determine the conversion factor between VG and dot energy. Insets (a)-(c) show the energy levels of the dot at the corresponding...

Prance, Jonathan Robert



Page 1 of 2 Radiogram No. 9189u Form 24 for 05/10/2012  

E-Print Network (OSTI)

Conference (S-band) 08:05-08:15 FE-6 CFE Work prep 08:05-08:15 CDR Work Prep 08:15-09:45 CDR Progress 415:05-11:20 FE-6 Capillary Flow Experiments (CFE) Hardware Setup 10:40-12:35 FE-5 ATV Transfers 11:15-12:45 CDR Physical Exercise (TVIS), Day 4 11:20-12:50 FE-6 CFE ­ VG2 Video Test 12:35-13:35 FE-5 LUNCH 12


Rigidity theory for matroids  

E-Print Network (OSTI)

the (squared) edge lengths Q(pu pv), for fu;vg2E, where Q(x) = Pdi=1x2i ? (II.) What is the dimension of the space of in nitesimal motions p that preserve all the edge directions pu pv regarded as slopes, that is, up to scaling? The answers... to these questions are known to be determined by certain linear dependence matroids repre- sented over transcendental extensions of R, as we now explain. First, the d-dimensional rigidity matroid Rd(G) is the matroid represented by the vectors (2) f(eu ev) (pu pv...

Develin, Mike; Martin, Jeremy L.; Reiner, Victor



Effects of vortex generators on a blunt trailing-edge airfoil for wind turbines  

Science Journals Connector (OSTI)

Abstract Vortex generators (VGs) are commonly-used effective flow separation control devices, and are proved to have potential to improve the aerodynamic performance of large wind turbines. In this paper, the flow physics of \\{VGs\\} and how their size affects the aerodynamic performance of a blunt trailing-edge airfoil DU97-W-300 have been investigated using CFD simulations. Based on wind turbine dedicated airfoil with and without \\{VGs\\} respectively, three-dimensional numerical models were established and further validated through the comparisons between the numerical results and the experimental data. The effects of VGs' size were analyzed from several perspectives, such as trailing-edge height, length, short and long spacing between an adjacent pair of VGs. The results indicate that drag penalty is more sensitive to the increase of VG height than lift; an increment of VG length leads to negative effects on both lift and drag; increases of the spacing between an adjacent pair of \\{VGs\\} have positive impact on suppression of separated flow. Additionally, the flow field characteristics were further revealed by the analysis of streamlines and vortices in the wake region.

Linyue Gao; Hui Zhang; Yongqian Liu; Shuang Han



An overview of high-speed networking for workstations  

SciTech Connect

The telecommunications industry provides new technologies for GIS (Geographic Information System) workstation upgrades: Fast Ethernet, 100VG-AnyLAN, and Asynchronous Transfer Mode (ATM). These network technologies are based on approved standards and have industry backing (alliance for Fast Ethernet). This paper briefly examines these technologies. Fast Ethernet is an extension to its predecessor 10 Mbps Ethernet, providing a 10x increase in transmission rate. 100VG-AnyLAN offers extensions to Ethernet but embraces the Token Ring technology, allowing internetworking and better performance for networked video. ATM takes a radial approach by simplifying the information quantum to a 53-byte cell, resulting in rapid data handling for telecommunications equipment and allowing efficient transport of data, video, and voice communications. Switched Ethernet and Full Duplexing are among the other technologies competing for this market. The ultimate test of usefulness for any technology lies in how they handle the GIS environment requirements; working demonstration systems will help clarify marketing rhetoric and determine which vendor best implemented the standard.

Hake, K.



Latest developments in the large-scale production of adeno-associated virus vectors in insect cells toward the treatment of neuromuscular diseases  

Science Journals Connector (OSTI)

Adeno-associated viral (AAV) vectors are gene vectors of choice for the development of gene therapy treatments for many rare diseases affecting various tissues including retina, central nervous system, liver, and muscle. The AAV based gene therapy approach became conceivable only after the development of easily scalable production systems including the Sf9 cell/baculovirus expression system. Since the establishment of the production of AAV in the Sf9/baculovirus system by the group of Rob Kotin, this new production system has largely been developed for optimizing the large scale production of different serotypes of AAV for preclinical and clinical purposes. Today this manufacturing system allows for the production of purified vector genome (vg) quantities of up to 2נ1015 for AAV1 using a 50L reactor and the scale up to larger reactor volumes is paralleled by a corresponding increase in the vector yield. This review presents the principles and achievements of the Sf9/baculovirus system for the production of AAV in comparison to other expression systems based on mammalian cells. In addition, new developments and improvements, which have not yet been implemented at a large scale, and perspectives for further optimization of this production system will be discussed. All of these achievements as well as further process intensifications are urgently needed for the production of clinical doses for the treatment of neuromuscular diseases for which estimated doses of up to 1014vg/kg body mass are required.

Lionel Galibert; Otto-Wilhelm Merten



Seabased AB | Open Energy Information  

Open Energy Info (EERE)

Seabased AB Seabased AB Jump to: navigation, search Name Seabased AB Address Dag Hammarskjlds vg 52B Place Uppsala Zip S-75183 Sector Marine and Hydrokinetic Phone number 46,705,325,560 Website http://www.seabased.com Region Sweden LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This company is listed in the Marine and Hydrokinetic Technology Database. This company is involved in the following MHK Projects: Uppsala University Seabased AB Lysekil Sweden This company is involved in the following MHK Technologies: Seabased This article is a stub. You can help OpenEI by expanding it. Retrieved from "http://en.openei.org/w/index.php?title=Seabased_AB&oldid=678449" Categories: Clean Energy Organizations Companies Organizations Stubs


Microsoft PowerPoint - Proceedings Cover Sheets  

NLE Websites -- All DOE Office Websites (Extended Search)

Storage Storage - Storage Mechanisms Development of an in situ "window" into below-ground geological sequestration reaction processes May 8-11, 2006 * Hilton Alexandria Mark Center * Alexandria, Virginia Andrew V.G. Chizmeshya, Michael J. McKelvy, George H. Wolf, Hamdallah Béarat, Robert Marzke, Emmanuel Soignard, and Jason Diefenbacher Background: * Mineral Sequestration Working Group (NETL-DOE) (1998-present) * ASU: 5 faculty, 2 postdocs, 4 grad students, 2 undergrads * Specialization: atomic level mechanistic analysis in situ process characterization atomic level property/reaction simulations multi-phase fluid dynamics simulations * Support: DOE-NETL, Argonne National Laboratory GEOLOGICAL SEQUESTRATION of CO 2 1) Enormous storage capacity: 2) Geologic formations in close proximity to

Note: This page contains sample records for the topic "vg vg vg" 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.



NLE Websites -- All DOE Office Websites (Extended Search)

Exploring the Potential to Enhance Aqueous Olivine Exploring the Potential to Enhance Aqueous Olivine Carbonation Reactivity, While Avoiding the Cost of Mineral Pretreatment Activation Michael J. McKelvy May 2-5, 2005, Hilton Alexandria Mark Center, Alexandria Virginia EXPLORING THE POTENTIAL TO ENHANCE AQUEOUS OLIVINE CARBONATION REACTIVITY, WHILE AVOIDING THE COST OF MINERAL PRETREATMENT ACTIVATION Michael J. McKelvy,*° Hamdallah Béarat,* Kyle Squires, + Andrew V.G. Chizmeshya,*° Kringan Saha, + Firas Alawneh,° R.W. Carpenter,*° Youngchul Kim,° and Larry Penner. ● *Center for Solid State Science, °Science and Engineering of Materials Graduate Program, and + Department of Mechanical and Aerospace Engineering; Arizona State University; Tempe, AZ 85287 ● Albany Research Center, U.S. Department of Energy; Albany Oregon



Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2 2 S-LWR Integral Inherently Safe Light Water Reactor Bojan Petrovic Nuclear and Radiological Engineering Georgia Institute of Technology, Atlanta, GA, USA DOE-NE Materials Crosscut Coordination Meeting - 2013 Webinar, 8/21/2013 VG 2 DOE-NE Materials Crosscut Coordination Meeting - Webinar, 8/21/2013 DOE NEUP IRP 3-year program; recently started IRP FOA requirements: -Large (~1,000 MWe) PWR for US market - economics -Inherent safety Multi-institutional, multi-disciplinary: Lead: Georgia Tech (B. Petrovic, PI) Ten other partnering organizations: Universities: U. of Michigan, U. of Tennessee, Virginia Tech, U. of Idaho, Morehouse College National Lab: INL Industry: Westinghouse and Utility: Southern Nuclear Int'l (U. of Cambridge, UK; Politecnico di Milano, Italy)


Bi-orthonormal wavelets and numerical boundary measures for wavelet-Galerkin methods  

E-Print Network (OSTI)

vector along the boundary M, then (4 2) The formula for the arclength of M, as given by Wells and Zhou [Ref 22], is L(cd) = fds= fn nds= Jdivndxdy re cXi 0 (4 3) = J2?dtvndxdy = ? J Vg?ndxdy R where g? is the charecteristic function of 0... r, s Further simplification using autocorrelation along with the differentiation formula gives 1. (cd) = ? Pg ?a N, (4+q ? s)f[N, (2'x ? p)N, (2'x ? r) ? N, (2'x ? p ? I)N4(2'x ? r)P pq rr ? P pc b?N, (4+ p ? r) J[N, (2'V ? q)Nq(2'V ? s) ? N, (2...

Sangari, Bimal



Known algorithms for EDGE CLIQUE COVER are probably optimal  

E-Print Network (OSTI)

In the EDGE CLIQUE COVER problem, given a graph G and an integer k, we ask whether the edges of G can be covered with k complete subgraphs of G or, equivalently, whether G admits an intersection model on k-element universe. Gramm et al. [JEA 2008] shown a set of simple rules that reduce the number of vertices of G to 2^k, and no algorithm is known with significantly better running time bound than a brute-force search on this reduced instance. In this paper we show that the approach of Gramm et al. is essentially optimal: we present a polynomial time algorithm that reduces an arbitrary 3-CNF-SAT formula with n variables and m clauses to an equivalent EDGE CLIQUE COVER instance (G,k) with k = O(log n) and |V(G)| = O(n + m).

Cygan, Marek; Pilipczuk, Micha?



Perfusion measurement with Rubidium 81 to Krypton 81m ratio  

E-Print Network (OSTI)

OF'IIN=1 WRI II:(II?FV?6) 6 FORMAT( 'Of'RIN f'? ( r A r 8) I ' ?4r*J. ) REAlt & IDEV r 22) I AN' IPRIN I. =O IF( (IANS. AND. '377) . EQ, '102 & IF'RINT--1 IF ( & IANS . ANIt, ' 377 &, EO. ' 1 0 I ):. 'f1 IN I;-0 WRITE (1DEV ~ 7) 7 FORMAT&' TTY... & IDEV r 48) GQ TQ 43 WRITE & IDEV r 47) FORM4T& 'OINPLIT 6 BKGD CHANNELS TO AVERAGE I ' r f r Ai) READ ( I DE V r 114 i I B*VG IF& IBAVG. LE. O) GO TO 9999 WRITE & IDEV r 52) FORMAT(' DISPLAY ((0=NO)ri=KRr2=PB!3=RB/KR)l 're A1) READ&IDEV!114...

Beasley, Charles Ward



The Lagrangian formulation of the gravitational field equations in general relativity  

E-Print Network (OSTI)

?, S(Vq j') =V=p R'?~ [~g"'--' V" ~~ ~g?j 16 &;~ &A=gg" ) =Fj [P?g Q" --, ' P, 'p5' 5??'ag'"j (t. ~st) By using the result of Equation (1. 3), the above equation reduces to 7?q o(ll=gg ) =Vg [P?&q3' -& IZB Upon changing the summation index...'orm of an ordinary divergence consider the expression &(~ V9)=V~ "9 s9' d(%9) From the identi. ty the following relations may be found 47 d(Fg) = ?, ' 9' Fj &9??. , ( s f"c) dan=9) = =?'9??F) ~9" . (~, sc?) Equation (2. 57a) allows the second term...

Zund, Joe David



Application of population genetics theory to a gametic sampling scheme  

E-Print Network (OSTI)

/r) decreases, so that for large r: VB =' 4V(S1-BC) . 17 Therefore, Vr V G 4{V(Si) V(BC)-ZCo (Sl, BC)) k S 1 BC 2 S 1 BC 42[(X. -X. ) -(X. . -X. . ) k] (k-11 and (16) 2VG estimate of additive component. (3) Dominance component: Again referring...I', PPL CJ'. i ION OF POPULA, ' IOi' GENETICS THEORY ; O A G. -' l'. = T I C S, "i; I iP L I li G S C H E I I E A Thesis by i;, '-, I'. Y U il R I C H II A L L Submi tted to th. . Graduate Co11ege of Texas AS;I Uni ve& si ty in parti a1 fu1fi...

Ball, Mary Virginia Uhrich



Asteroseismic analysis of the CoRoT target HD 169392  

E-Print Network (OSTI)

The satellite CoRoT (Convection, Rotation, and planetary Transits) has provided high-quality data for almost six years. We show here the asteroseismic analysis and modeling of HD169392A, which belongs to a binary system weakly gravitationally bound as the distance between the two components is of 4250 AU. The main component, HD169392A, is a G0IV star with a magnitude of 7.50 while the second component is a G0V-G2IV star with a magnitude of 8.98. This analysis focuses on the main component, as the secondary one is too faint to measure any seismic parameters. A complete modeling has been possible thanks to the complementary spectroscopic observations from HARPS, providing Teff=5985+/-60K, log g=3.96+/-0.07, and [Fe/H]=- 0.04+/-0.10.

Mathur, S; Catala, C; Benomar, O; Davies, G R; Garcia, R A; Salabert, D; Ballot, J; Mosser, B; Regulo, C; Chaplin, W J; Elsworth, Y; Handberg, R; Hekker, S; Mantegazza, L; Michel, E; Poretti, E; Rainer, M; Roxburgh, I W; Samadi, R; Steslicki, M; Uytterhoeven, K; Verner, G A; Auvergne, M; Baglin, A; Forteza, S Barcelo; Baudin, F; Cortes, T Roca



General Hydrodynamics of He-3-a in Finite Magnetic-Fields  

E-Print Network (OSTI)

by setting to zero the full variational derivatives with respect to Q, I, $i, and, f. Using Sv,' 8(B,y) Sv A PE Sl; p(I x V,I)?I I which follow from (11), we find the (@,l) equilibri- um conditions to be O=V z' 0 = I x 4, 'Ir, =?Q, ?8,$??[I x ( h...?"'f +a?pmp) (I x '(7); (/I H,)? (24) a]() j(, v ' v = y l ' V )( v +maBapIIp X' P(V" O)-i = P'(i x q )?(a,8'l?+-n,8?'l )8 vg, 4~ ?yPf, (h ?H ) ?V" v'a- y"l '7 x?v" +m D pIIp, (27) ZP ?yP[ f & {h?A)] ?P{v" 9)f = n?p(-f &f[)p+mp(Bp V~ 7'-'D p Qf+E(jp 8...

SASLOW, WM; Hu, Chia-Ren.



A study of changes in expressed attitudes in the realm of Negro-White relations of Texas A. & M. freshmen  

E-Print Network (OSTI)

'Irrcu~Ce Q t9 g o o e +v wo Nct 0 bled 5 o'0 Bio m a e & ~ R'0 Act 0 8'0 n gb oe v vm V vg e 3L' Experimental: Church A Church B Church C Church D Church E Total Experimental Total Control 49 27 7 -- 15 13 2 1 -- 10 34 6 8 1 1 - 6... not on the questionnaire given the respondents. LIBRARY A A m COLLEGE OF TEXAS HOW WOULD YOU REACT TV THE POLLOWINO: (1ndioate by entering an x 1n the proper space) I" M + P Pyj 51ii ~5 5mIN l, 2 ~ 3 ~ $ ~ 6. 7 ~ 8 ~ 9. 10, 12 ' 1$ 14. The attempt...

Ketch, Clarence Willard



The effect of benzene hexachloride-DDT spray on the insect population and the cotton plant  

E-Print Network (OSTI)

~ ~ent to ecucs hgarg, fa e@ge tests eceibcote6 ip Rgb sml QrLug (X$) Pl@ was shcegn to be ~ the teGaccaa bat less tcoge to tbe baL1 veerQ, Gc6nes en6 Qaia f'I), Rveuotsc ~ ea6 Evkng QV) sino wepcetc6 that the g ~ %If ~ ecc4gc41e6 tbe bc6lacecc... , ~ xm ' QV78 SDT 9@ ee Vg @C 30$ ce 9' ee a% eo @g oe ~ $86( SIC ~~ SR @8Dg T~ ?@Sf Hg +VV/ KC ?66Tp SA ~ RC 46"/g QK gN ea p3g ee g@ oe a%68 K+ gag HHQ @op T~ ?~? 9% gVQCg %Pl Q$g IPZ +9 eo /LE ae QX$ ey - P5%4S N ISP %F8 Ns $C, ~ ER Zoma...

Lloyd, Edwin Phillips



Electrical Contact Properties between the Accumulation Layer and Metal Electrodes in Ultrathin Poly(3-hexylthiophene)(P3HT) Field Effect Transistors  

Science Journals Connector (OSTI)

(13, 18) Further, effects of the charge injection barrier, gate electric field, and charge carrier mobility near the contact region on the contact resistance have been investigated. ... To gain further insight into the origin of the large contact resistance in the ultrathin film FET device, we compared how the contact and channel resistances change with P3HT film thickness under the same carrier concentration of 3.2 1012 cm2, corresponding to VG VT = 30 V. ... Emtage and ODwyer(35) proposed that the net injection current density, J, is proportional to mobility, ?, according to the equation, J = N exp(?e?B/kT)e?F where N is a constant, e is the elementary charge, ?B is the injection energy barrier, k is Boltzmann constant, T is temperature, and F is the electric field applied. ...

Byoungnam Park; Avishek Aiyar; Jung-il Hong; Elsa Reichmanis



Experimental and numerical investigation on air-side performance of fin-and-tube heat exchangers with various fin patterns  

SciTech Connect

Air-side heat transfer and friction characteristics of five kinds of fin-and-tube heat exchangers, with the number of tube rows (N = 12) and the diameter of tubes (D{sub o} = 18 mm), have been experimentally investigated. The test samples consist of five types of fin configurations: crimped spiral fin, plain fin, slit fin, fin with delta-wing longitudinal vortex generators (VGs) and mixed fin with front 6-row vortex-generator fin and rear 6-row slit fin. The heat transfer and friction factor correlations for different types of heat exchangers were obtained with the Reynolds numbers ranging from 4000 to 10000. It was found that crimped spiral fin provides higher heat transfer and pressure drop than the other four fins. The air-side performance of heat exchangers with the above five fins has been evaluated under three sets of criteria and it was shown that the heat exchanger with mixed fin (front vortex-generator fin and rear slit fin) has better performance than that with fin with delta-wing vortex generators, and the slit fin offers best heat transfer performance at high Reynolds numbers. Based on the correlations of numerical data, Genetic Algorithm optimization was carried out, and the optimization results indicated that the increase of VG attack angle or length, or decrease of VG height may enhance the performance of vortex-generator fin. The heat transfer performances for optimized vortex-generator fin and slit fin at hand have been compared with numerical method. (author)

Tang, L.H.; Zeng, M.; Wang, Q.W. [State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049 (China)




NLE Websites -- All DOE Office Websites (Extended Search)

VIBRATIONAL VIBRATIONAL MEASUREMENTS IN 3-ID-B J. Sutter 1 , E. Alp 1 , J. Barraza 2 , D. Shu 2 1 INTRODUCTION We have undertaken a series of vibrational measurements in hutch 3-ID-B. Our motivation was to compare two di erent methods of mounting an interferometer for e ectiveness in vibrational isolation and stability. In addition, we were able to compare the stability of our optical table with and without its eight large bolts inserted. 2 PROCEDURE We used two accelerometers to measure the amplitude of the vibrational acceleration as a function of frequency in steps of 0.0625 Hz from 1 to 25 Hz. The accelerations could then be transformed into displacement amplitudes by the simple harmonic equation of motion x = ,! 2 x, where x is the displacement and ! is the frequency times 2. The accelerometers had been calibrated before our experiment and were found to output a voltage of 7:44G V=g,


Slide 1  

National Nuclear Security Administration (NNSA)

coupled interaction between crack coupled interaction between crack growth, diffusion and chemical reactions E.Vilchevskaya, A.Freidin Institute of Problems in Mechanical Engineering Russian Academy of Science Joint U.S.-Russia Conference on Advances in Material Science August 31 - September 3, 2009 Silicon oxidation Statement of the problem In the steady-state approximation c J qc J c t x x α μ β ∂ ∂ ∂ = - - , = - ∂ ∂ ∂ 0 at ( ) c c x l t = = at ( ) c kc x x t x μ β ∗ ∂ = - = ∂ c c c l l x l t x ξ ξ ∂ ∂ ∂ = - ≡ - , = - ∂ ∂ ∂ & & A simplified model c J D x ∂ = - ∂ 2 2 [0 ] c c D qc l α ξ ξ ξ ξ ∗ ∂ ∂ - = - ∈ , ∂ ∂ & 0 at 0 at c c c D kc ξ ξ ξ ξ ∗ ∂ = = , = - = ∂ c D kc nVg ξ ξ ξ ∗ ∗ ∂ - | = | = ∂ Barenblatt-Dugdale approach 0 0 0 ( ) ( ) ( ) ( ) s x l l p x t x l l x l l a σ σ ξ


FY 2012 Annual Progress Report for Energy Storage R&D  

NLE Websites -- All DOE Office Websites (Extended Search)

A - 1 Energy Storage R&D A - 1 Energy Storage R&D Appendix A: List of Contributors and Research Collaborators Contributor/Collaborator (with Affiliation) FY 2012 Annual Progress Report Section(s) Abe, Yasuhiro (Toda America) II.C.2 Abkemeier, Kristin (NWTech) III.G Abouimrane, Ali (ANL) IV.B.1, IV.B.3.1, IV.B.4.1 Abraham, Daniel P. (ANL) IV.B.1, IV.B.2.7, IV.C.1, IV.C.3, IV.C.4, IV.E.3.2 Alamgir, Mohamed (LG Chem, MI) III.A.2.2, IV.B.2.5 Allen, Jan L. (ARL) IV.B.5.3 Allu, S. (ORNL) III.E.2 Alvarez, Jesus M. (A123 Systems) II.A.2 Amine, Khalil (ANL) IV.B.1, IV.B.2.2, IV.B.3.1, IV.B.3.3, IV.B.4.1, IV.B.4.2, IV.B.5.1, IV.D.2, IV.E.3.1, V.D.5, V.G.2 Anderson, Travis (SNL) IV.D.3 Angell, C. Austen (ASU) V.D.8 Armand, Michel (NCSU) V.D.6 Arnold, John (Miltec) III.A.5.2



NLE Websites -- All DOE Office Websites (Extended Search)

Lawrence Lawrence Livermore National Laboratory U.S. Department of Energy Approved for public release; further dissemination unlimited UCRL-ID-151619 Results from the First 249 Cf+ 48 Ca Experiment Y.T. Oganessian, V.K. Utyonkov, Y.V. Lobanov, F.S. Abdullin, A.N. Polyakov, I.V. Shirokovsky, Y.S. Tsyganov, A.N. Mezentsev, S. Iliev, V.G. Subbotin, A.M. Sukhov, O.V. Ivanov, A.A. Voinov, K. Subotic, V.I. Zagrebaev, M.G. Itkis, K.J. Moody, J.F. Wild, M.A. Stoyer, N.J. Stoyer, C.A. Laue, D.A. Shaughnessy, J.B. Patin, R.W. Lougheed February 3, 2003 DISCLAIMER This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for


Hart Crane's attitude toward technology  

E-Print Network (OSTI)

"' '' ll'Pr CCCGlrDr. 8 A&Q ?iQFC ' PU888 837 l, 8iiiZ'i'r. uQi it!88i iiD 8 iaDCOCi81 l8QLiJ. 1, o, ";tlxlJiiuif 4) f'ivd' ooUIXMLo Bert-'wr'5AG18 i1ie@rixjiker~'. Philip iiryrfoo~, aeoJihrAA ther, ' rullltx i''j e. '-'Ihlxud thJ'-hxxJIAer'roietio55...Gt. " Jl~b& gff ' tJ41jh 5JG LL!JtgkJ fjGL' f)GGJ'CffG Gk!5~" VWPGtCG . GL ~hL'Klft"'hiG KQLC5JOCGhf ty t!J CV LGGt L151GOj =Gt. 1-;. "1 1 '. 52 Wi L 9 1 !1 1O !1!, 5'G-LOt G t 11L1' Lfj V V!VG "il, "Gi!JOG ' Lf58 tEJ . =':!JIG Gf'JhGGGKQlj j...

Abbott, Craig Stephens




SciTech Connect

The Cold War era created a massive build-up of nuclear weapon stockpiles in the former Soviet Union and the United States. The primary objective during this period was the development of nuclear technologies for weapons, space and power with lack of attention to the impact of radioactive and hazardous waste products on the environment. Effective technologies for radioactive and hazardous waste treatment and disposal were not well investigated or promoted during the arms build-up; and consequently, environmental contamination has become a major problem. These problems in Russia and the United States are well documented. Significant amounts of liquid radwaste have existed since the 1950's. The current government of the Russian Federation is addressing the issues of land remediation and permanent storage of radwaste resulting from internal and external pressures for safe cleanup and storage. The Russian government seeks new technologies from internal sources and from the West that will provide high performance, long term stability, safe for transport and for long-term storage of liquid radwaste at a reasonable economic cost. With the great diversity of liquid chemical compositions and activity levels, it is important to note that these waste products cannot be processed with commonly used methods. Different techniques and materials can be used for this problem resolution including the use of polymer materials that are capable of forming chemically stable, solidified waste products. In 2001, the V.G. Khlopin Radium Institute (St. Petersburg, Russia) and Pacific World Trade (Indianapolis, Indiana) began an extensive research and test program to determine the effectiveness and performance of high technology polymers for the immobilization and solidification of complex liquid radwaste types generated by the Ministry of Atomic Energy (Minatom), Russia, organization. The high tech polymers used in the tests were provided by Nochar, Inc. (Indianapolis, Indiana).

Kelley, Dennis; Brunkow, Ward; Pokhitonov, Yuri; Starchenko, Vadim



Scalable serum-free production of recombinant adeno-associated virus type 2 by transfection of 293 suspension cells  

Science Journals Connector (OSTI)

Recombinant adeno-associated virus (rAAV) has emerged in recent years as a promising gene therapy vector that may be used in the treatment of diverse human diseases. The major obstacle to broadening the usage of rAAV vectors remains the limited capacity of available production systems to provide sufficient rAAV quantities for preclinical and clinical trials. The impracticality of expanding commonly used adherent cell lines represents a limitation to large-scale production. This paper describes successful productions of rAAV type 2 using suspension-growing human embryonic kidney (HEK293) cells in serum-free medium. The developed process, based on triple transfection employing polyethylenimine (PEI) as DNA transporter, allowed for a serum-free production of AAV, yielding viral vector titer up to 4.5נ1011 infectious viral particles (IVP) in a 3.5-L bioreactor. A maximum ratio of VG:IVP in the order of 200:1 was obtained, indicating the efficient encapsidation of viral vectors in HEK293 cells. The effect of varying the ratio of three plasmids and the influence of cell density at transfection were studied. The conditioned medium did not limit or inhibit the rAAV production; therefore, the elimination of the medium exchange step before or after transfection greatly simplified the scale-up of rAAV production. The cell-specific viral titers obtained in bioreactor suspension cultures were similar or higher than those obtained with control adherent cell cultures which further supported the scalability of the process. From multiple aspects including process simplicity, scalability, and low operating costs, this transfection method appears to be the most promising technology for large-scale production of rAAV.

Yves Durocher; Phuong Lan Pham; Gilles St-Laurent; Danielle Jacob; Brian Cass; Parminder Chahal; Cara J. Lau; Josphine Nalbantoglu; Amine Kamen


Note: This page contains sample records for the topic "vg vg vg" 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.


Mass Market Demand Response and Variable Generation Integration Issues: A  

NLE Websites -- All DOE Office Websites (Extended Search)

Mass Market Demand Response and Variable Generation Integration Issues: A Mass Market Demand Response and Variable Generation Integration Issues: A Scoping Study Title Mass Market Demand Response and Variable Generation Integration Issues: A Scoping Study Publication Type Report Refereed Designation Unknown Year of Publication 2011 Authors Cappers, Peter, Andrew D. Mills, Charles A. Goldman, Ryan H. Wiser, and Joseph H. Eto Pagination 76 Date Published 10/2011 Publisher LBNL City Berkeley Keywords demand response, electricity markets and policy group, energy analysis and environmental impacts department, renewable generation integration, smart grid Abstract The penetration of renewable generation technology (e.g., wind, solar) is expected to dramatically increase in the United States during the coming years as many states are implementing policies to expand this sector through regulation and/or legislation. It is widely understood, though, that large scale deployment of certain renewable energy sources, namely wind and solar, poses system integration challenges because of its variable and often times unpredictable production characteristics (NERC, 2009). Strategies that rely on existing thermal generation resources and improved wind and solar energy production forecasts to manage this variability are currently employed by bulk power system operators, although a host of additional options are envisioned for the near future. Demand response (DR), when properly designed, could be a viable resource for managing many of the system balancing issues associated with integrating large-scale variable generation (VG) resources (NERC, 2009). However, demand-side options would need to compete against strategies already in use or contemplated for the future to integrate larger volumes of wind and solar generation resources. Proponents of smart grid (of which Advanced Metering Infrastructure or AMI is an integral component) assert that the technologies associated with this new investment can facilitate synergies and linkages between demand-side management and bulk power system needs. For example, smart grid proponents assert that system-wide implementation of advanced metering to mass market customers (i.e., residential and small commercial customers) as part of a smart grid deployment enables a significant increase in demand response capability.1 Specifically, the implementation of AMI allows electricity consumption information to be captured, stored and utilized at a highly granular level (e.g., 15-60 minute intervals in most cases) and provides an opportunity for utilities and public policymakers to more fully engage electricity customers in better managing their own usage through time-based rates and near-real time feedback to customers on their usage patterns while also potentially improving the management of the bulk power system. At present, development of time-based rates and demand response programs and the installation of variable generation resources are moving forward largely independent of each other in state and regional regulatory and policy forums and without much regard to the complementary nature of their operational characteristics.2 By 2020, the electric power sector is expected to add ~65 million advanced meters3 (which would reach ~47% of U.S. households) as part of smart grid and AMI4 deployments (IEE, 2010) and add ~40-80 GW of wind and solar capacity (EIA, 2010). Thus, in this scoping study, we focus on a key question posed by policymakers: what role can the smart grid (and its associated enabling technology) play over the next 5-10 years in helping to integrate greater penetration of variable generation resources by providing mass market customers with greater access to demand response opportunities? There is a well-established body of research that examines variable generation integration issues as well as demand response potential, but the nexus between the two has been somewhat neglected by the industry. The studies that have been conducted are informative concerning what could be accomplished with strong broad-based support for the expansion of demand response opportunities, but typically do not discuss the many barriers that stand in the way of reaching this potential. This study examines how demand side resources could be used to integrate wind and solar resources in the bulk power system, identifies barriers that currently limit the use of demand side strategies, and suggests several factors that should be considered in assessing alternative strategies that can be employed to integrate wind and solar resources in the bulk power system. It is difficult to properly gauge the role that DR could play in managing VG integration issues in the near future without acknowledging and understanding the entities and institutions that govern the interactions between variable generation and mass market customers (see Figure ES-1). Retail entities, like load-serving entities (LSE) and aggregators of retail customers (ARC), harness the demand response opportunities of mass market customers through tariffs (and DR programs) that are approved by state regulatory agencies or local governing entities (in the case of public power). The changes in electricity consumption induced by DR as well as the changes in electricity production due to the variable nature of wind and solar generation technologies is jointly managed by bulk power system operators. Bulk power system operators function under tariffs approved by the Federal Energy Regulatory Commission (FERC) and must operate their systems in accordance with rules set by regional reliability councils. These reliability rules are derived from enforceable standards that are set by the North American Electric Reliability Corporation (NERC) and approved by federal regulators. Thus, the role that DR can play in managing VG integration issues is contingent on what opportunities state and local regulators are willing to approve and how customers' response to the DR opportunities can be integrated into the bulk power system both electrically (due to reliability rules) and financially (due to market rules).


Investigations of substitutional impurity segregation to the {Sigma}5(310)/[001] STGB in FCC metals: a EFTEM and HRTEM study  

SciTech Connect

Investigations of the {Sigma}5 symmetric tilt grain boundaries (STGB) in face-centered cubic (FCC) metals in four different metal systems were performed. The metals we have chosen include pure Aluminum, pure Copper, Copper with 1at% Silver, and Aluminum with 1at% Copper. The model grain boundaries have been fabricated with ultra-high vacuum diffusion bonding of single crystals. With the controlled fabrication and preparation of bicrystals we are able to determine composition, structure and morphology of grain boundaries which depends on geometry, crystal orientation, impurity concentration and temperature. The limiting factor in this approach is the ability to fabricate well defined, precisely oriented interfaces, which is enabled here with the UHV Diffusion Bonding Machine [1]. The relation between grain boundary energy and impurity segregation to the interface have been theoretically calculated for the {Sigma}5 (310)/[001] interfaces within the Local Density Approximation (LDA). The calculations use a plane-wave basis and ultrasoft pseudopotentials [2]. The overall structure, especially for the Al interface is qualitatively similar to previous predictions based on pair-potential calculations. These theoretical calculations of the interface structure indicates that the Cu and the Ag atoms segregate to distinct atomic sites at the interface. High resolution electron microscopy (HRTEM) have been used to reveal the structure of the different interfaces under investigation and to proof the predictions of the theoretical model. Simulations of the HRTEM images were done using these calculated structural models. Additionally structural models based on geometric considerations (coincidence site lattice construction) were used and compared to the experimentally obtained HRTEM images. High resolution images of the boundary structure were acquired using different consecutive defocus values. To acquire these through-focal series we have automated the acquisition process using the script language of the Gatari Digital Micrograph software. The main aim of recording the through-focal series is the possibility of exit wave reconstruction of the investigated boundary structure [3]. Shown in Figure 1a is one of the 30 images of the through-focal series which was obtained with a Philips CM300 FEG UT TEM at the National Center for Electron Microscopy. The homogeneously flat surface of the sample over the field of view and the lack of distortions which are normally present in HRTEM images is a direct result of the sample preparation with a low energy, low angle ion mill [4]. Investigations are planned to compare the reconstructed images (Fig.1b) to ''Z''-contrast images. For these particular investigations we will use the VG HI3 603 U in the Solid State Division at the Oak Ridge National Laboratory. To confirm the presence and determine the amount of the segregant, analytical electron microscopy was performed using a Philips CM 300 FEG ST TEM equipped with an Gatan Imaging Filter (GIF) with a 2kx2k CCD camera and an EDX detector. Electron spectroscopic images were acquired at the L{sub 2,3}-edge of copper around 931 eV to extract elemental maps (three-window-technique) of the copper distribution (Fig. 2a). Because of the small amount of the segregated species and the high energy loss of the investigated ionization edge the resulting elemental distributions are heavily dominated by noise. Series of ESI images were used to enhance the signal and to provide a better background subtraction. To reveal more precisely the segregation to the grain boundary, EDS line scans were performed and the resulting spectra were quantified (Fig. 2b). The amount of the copper in the analyzed volume of the Al-1at%Cu bicrystal is nearly doubled ({approx} 2 at%) in relation to the bulk concentration of {approx} 1 at% (average from different line scans). The quantification results were refined and confirmed by the use of EELS line scans.

Plitzko, J M; Campbell, G H; King, W E; Foiles, S M




SciTech Connect

The objective of this task was to develop glass formulations for (Department of Energy) DOE waste streams with high aluminum concentrations to avoid nepheline formation while maintaining or meeting waste loading and/or waste throughput expectations as well as satisfying critical process and product performance related constraints. Liquidus temperatures and crystallization behavior were carefully characterized to support model development for higher waste loading glasses. The experimental work, characterization, and data interpretation necessary to meet these objectives were performed among three partnering laboratories: the V.G. Khlopin Radium Institute (KRI), Pacific Northwest National Laboratory (PNNL) and Savannah River National Laboratory (SRNL). Projected glass compositional regions that bound anticipated Defense Waste Processing Facility (DWPF) and Hanford high level waste (HLW) glass regions of interest were developed and used to generate glass compositions of interest for meeting the objectives of this study. A thorough statistical analysis was employed to allow for a wide range of waste glass compositions to be examined while minimizing the number of glasses that had to be fabricated and characterized in the laboratory. The glass compositions were divided into two sets, with 45 in the test matrix investigated by the U.S. laboratories and 30 in the test matrix investigated by KRI. Fabrication and characterization of the US and KRI-series glasses were generally handled separately. This report focuses mainly on the US-series glasses. Glasses were fabricated and characterized by SRNL and PNNL. Crystalline phases were identified by X-ray diffraction (XRD) in the quenched and canister centerline cooled (CCC) glasses and were generally iron oxides and spinels, which are not expected to impact durability of the glass. Nepheline was detected in five of the glasses after the CCC heat treatment. Chemical composition measurements for each of the glasses were conducted following an analytical plan. A review of the individual oxides for each glass revealed that there were no errors in batching significant enough to impact the outcome of the study. A comparison of the measured compositions of the replicates indicated an acceptable degree of repeatability as the percent differences for most of the oxides were less than 5% and percent differences for all of the oxides were less than 10 wt%. Chemical durability was measured using the Product Consistency Test (PCT). All but two of the study glasses had normalized leachate for boron (NL [B]) values that were well below that of the Environmental Assessment (EA) reference glass. The two highest NL [B] values were for the CCC versions of glasses US-18 and US-27 (10.498 g/L and 15.962 g/L, respectively). Nepheline crystallization was identified by qualitative XRD in five of the US-series glasses. Each of these five glasses (US-18, US-26, US-27, US-37 and US-43) showed a significant increase in NL [B] values after the CCC heat treatment. This reduction in durability can be attributed to the formation of nepheline during the slow cooling cycle and the removal of glass formers from the residual glass network. The liquidus temperature (T{sub L}) of each glass in the study was determined by both optical microscopy and XRD methods. The correlation coefficient of the measured XRD TL data versus the measured optical TL data was very good (R{sup 2} = 0.9469). Aside from a few outliers, the two datasets aligned very well across the entire temperature range (829 C to 1312 C for optical data and 813 C to 1310 C for XRD crystal fraction data). The data also correlated well with the predictions of a PNNL T{sub L} model. The correlation between the measured and calculated data had a higher degree of merit for the XRD crystal fraction data than for the optical data (higher R{sup 2} value of 0.9089 versus 0.8970 for the optical data). The SEM-EDS analysis of select samples revealed the presence of undissolved RuO{sub 2} in all glasses due to the low solubility of RuO{sub 2} in borosilicate glass. These

Fox, K; David Peeler, D; Tommy Edwards, T; David Best, D; Irene Reamer, I; Phyllis Workman, P; James Marra, J