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


OOMMF Oxs Extension Modules  

Science Conference Proceedings (OSTI)

... URL: http://www.soton.ac.uk/~fangohr/software/oxs_uniaxial4.html Authors: Jrgen Zimmermann, Richard Boardman, and Hans Fangohr Affiliation ...



The Musk Ox  

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

Musk Ox Musk Ox Nature Bulletin No. 740 January 25, 1964 Forest Preserve District of Cook County Seymour Simon, President David H. Thompson, Senior Naturalist THE MUSK OX Why are bones of the arctic musk ox found here in Illinois? The evidence shows that these remains date back to the Ice Age when mile- deep ice sheets covered Canada and large parts of the United States, Europe and Asia. At that time the musk ox was one of the few hardy animals that thrived along the edges of these ice sheets. Then, for thousands of years, as the climate warmed and the glaciers melted, the musk oxen followed the retreating glaciers northward. Today, they survive only on the bleak tundras of Alaska, northern Canada and the coast of Greenland . The musk ox looks somewhat like a small, unusually shaggy buffalo. It is built and upholstered for life in the most rugged climate on earth, where blizzards howl and temperatures 50 degrees below zero are common. Adult bulls weigh 500 pounds or more but appear heavier because of their thick padding of hair and wool. Cows are smaller. The dark brown to black hair -- two feet or longer on the neck, chest, sides and hind quarters -- hangs like an ankle-length skirt. The horns of both sexes are sharp, vicious weapons.


Estimation of Discrete Choice Models Using DCM for Ox  

E-Print Network (OSTI)

changes. 4. If Ox has been installed properly, this will allow using the DCM package from any directory. To use the package in your code, add the command #include packages/dcm/dcm.ox at the top of all files which require it. 1Subscription information... .1 Data organization DCM can read any data format available in Ox and GiveWin. Fur- thermore, DCM accepts multiple types of data organizations, i.e., the organization of the data in the database. For example, in re- vealed preference or ordered models...

Eklof, Matias; Weeks, Melvyn



Characterization of TiOxNy nanoparticles embedded in HfOxNy as charge trapping nodes for nonvolatile memory device applications  

Science Conference Proceedings (OSTI)

Silicon-oxide-nitride-oxide-silicon devices with nanoparticles (NPs) as charge trapping nodes (CTNs) are important to provide enhanced performance for nonvolatile memory devices. To study these topics, the TiO"xN"y metal oxide NPs embedded in the HfO"xN"y ... Keywords: Charge trapping nodes, HfOxNy, Nanoparticles, Nonvolatile memory devices, TiOxNy

Chien-Wei Liu; Chin-Lung Cheng; Kuei-Shu Chang-Liao; Jin-Tsong Jeng; Bau-Tong Dai; Chen-Pang Tsai



Investigation of silicon oxide (SiOx) nanowires growth with gold/chromium catalysts  

Science Conference Proceedings (OSTI)

We report the growth of high density silicon Oxide (SiOx) nanowires at an elevated temperature. The nanowires density is enhanced by inserting a thin layer of chromium metal in gold/Si catalyst system. The SiOx nanowires were grown ... Keywords: chromium, gold, nanowires, silicon substrate, thermal annealing

Anima Johari; Vikas Rana



Electric field control of domain wall propagation in Pt/Co/GdOx films  

E-Print Network (OSTI)

The influence of a gate voltage on domain wall (DW) propagation is investigated in ultrathin Pt/Co/gadolinium oxide (GdOx) films with perpendicular magnetic anisotropy. The DW propagation field can be enhanced or retarded ...

Bauer, Uwe


Negative ion photodetachment spectroscopy of the Al3O2 , Al3O3 , Al4Ox , Al5Ox (x = 35), Al6O5 , and Al7O5 clusters  

E-Print Network (OSTI)

Negative ion photodetachment spectroscopy of the Al3O2 , Al3O3 , Al4Ox , Al5Ox (x = 3­5), Al6O5 , and Al7O5 clusters Giovanni Meloni, Michael J. Ferguson and Daniel M. Neumark Department of Chemistry as an Advance Article on the web 9th September 2003 The Al3O2 , Al3O3 , Al4Ox , Al5Ox (x ¼ 3­5), Al6O5 , and Al7

Neumark, Daniel M.


Overall Photocatalytic Water Splitting with NiOx-SrTiO3 A Revised Mechanism  

Science Conference Proceedings (OSTI)

NiOx (0 water splitting under UV light. The established mechanism for this and many other NiOx containing catalysts assumes water oxidation to occur at the early transition metal oxide and water reduction at NiOx. Here we show that NiOx-STO is more likely a three component Ni-STO-NiO catalyst, in which STO absorbs the light, Ni reduces protons, and NiO oxidizes water. This interpretation is based on systematic H2/O2 evolution tests of appropriately varied catalyst compositions using oxidized, chemically and photochemically added nickel and NiO nanoparticle cocatalysts. Surface photovoltage (SPV) measurements reveal that Ni(0) serves as an electron trap (site for water reduction) and that NiO serves as a hole trap (site for water oxidation). Electrochemical measurements show that the overpotential for water oxidation correlates with NiO content, whereas the water reduction overpotential depends on Ni content. Photodeposition experiments with NiCl2 and H2PtCl6 on NiO-STO show that electrons are available on the STO surface, not on the NiO particles. Based on photoelectrochemistry, both NiO and Ni particles suppress the Fermi level in STO, but the effect of this shift on catalytic activity is not clear. Overall, the results suggest a revised role for NiO in NiOx-STO and in many other nickel-containing water splitting systems, including NiOx-La:KTaO3, and many layered perovskites.

Townsend, Troy K.; Browning, Nigel D.; Osterloh, Frank



Simple synthesis and growth mechanism of core/shell cdse/SiOx nanowires  

Science Conference Proceedings (OSTI)

Core-shell-structured CdSe/SiOx nanowires were synthesized on an equilateral triangle Si (111) substrate through a simple one-step thermal evaporation process. SEM, TEM, and XRD investigations confirmed the core-shell structure; that is, the ...

Guozhang Dai; Shengyi Yang; Min Yan; Qiang Wan; Qinglin Zhang; Anlian Pan; Bingsuo Zou



Demonstration/evaluation of the Cat-Ox flue gas desulfurization system. Final report, June 1970-October 1975  

SciTech Connect

The report gives a comprehensive summary of the experience gained and the problems encountered during the Cat-Ox demonstration program. The report outlines the process design and construction, as well as operating experience and problems. Test results and conclusions derived from baseline testing, acceptance testing, ESP testing, transient testing, and a number of special tests and studies associated with the system are reported.

Bee, R.; Reale, R.; Wallo, A.



Some Lessons Learned from 20 Years in RedOx Flow Battery R&d  

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

lessons learned from 20 years in lessons learned from 20 years in RedOx Flow Battery R&D Dr Steve Clarke, CEO Applied Intellectual Capital, Alameda CAc DOE Workshop Washington DC March 2012 www.apicap.com Contents ● AIC's involvement in RFB R&D ● Some key lessons learned ● Some remaining challenges to be overcome 2 Applied Intellectual Capital ● Technology consulting  Electrochemical and materials focus  Clients include leading industrials, VCs, DOE, DOD and EPA  33,000 ft. facility for laboratory, engineering, rapid prototyping and testing ● Technology venturing (own micro- fund)  IP generated by consulting and R&D  Leverages labs, facilities and consulting successes ● Combined resources  Proven business development team  Start-up to IPO


Texture improvements in the high-temperature superconducting Bi?Sr?Ca?Cu?Ox̳/Ag system via surface energy driven grain alignment  

E-Print Network (OSTI)

The relation between processing, microstructure, and material property was investigated in the high-temperature superconducting Bi?Sr?Ca?Cu?Ox̳/Ag system. Experiments were based on a theoretical surface energy model ...

Vodhanel, Mark E



Photocatalytic splitting of water under visible-light irradiation over the NiOx-loaded Sm{sub 2}InTaO{sub 7} with 4f-d{sup 10}-d{sup 0} configuration  

SciTech Connect

A new visible-light-response photocatalyst Sm{sub 2}InTaO{sub 7} with 4f-d{sup 10}-d{sup 0} configuration crystallized in a cubic system with the space group Fd3m was synthesized by a solid-state reaction method. NiOx-loaded Sm{sub 2}InTaO{sub 7} showed high photocatalytic activities for H{sub 2} evolution from pure water under visible light irradiation (lambda>400 nm). Changes in the photocatalytic activity with the calcination temperature of Sm{sub 2}InTaO{sub 7} and the amount of NiOx loaded indicated that the combination of highly crystallized Sm{sub 2}InTaO{sub 7} and a high dispersion of NiOx particles led to high photocatalytic activity. The high photocatalytic performance of NiOx-loaded Sm{sub 2}InTaO{sub 7} supported the existing view that the photocatalytic activity correlated with the lattice distortion. Density functional theory calculation indicated that strong dispersion from the hybridized In 5s 5p orbitals at the bottom of the conduction band was responsible for the high activity of photocatalyst Sm{sub 2}InTaO{sub 7}. - Graphical abstract: A new visible-light-response photocatalyst Sm{sub 2}InTaO{sub 7} with 4f-d{sup 10}-d{sup 0} configuration was developed. DFT calculation indicated that strong dispersion from the hybridized In 5s 5p orbitals was responsible for the high photocatalytic activity.

Tang Xinde, E-mail: txd738011@yahoo.c [College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 (China); Ye Hongqi [College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 (China); Liu Hui [College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 (China); State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083 (China); Ma Chenxia; Zhao Zhi [College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 (China)



OxCORT v4 Quick Guide Student Guide To OxCORT  

E-Print Network (OSTI)

particular dates, enter the dates in these fields. You may need to change the Term search fields to Any Term into the field below. Topic ­ To search for reports relating to a particular topic enter one or all the words and Any Year if the term shown does not match the dates you have entered. XRNLI ­ Each report has a report

Johnston, Michael


Transient PrOx carbon monoxide measurement, control, and optimization  

DOE Green Energy (OSTI)

Fuel processing systems for low temperature polymer electrolyte membrane (PEM) fuel cell systems require control of the carbon monoxide concentration to less than 100 ppm to 10 ppm in the anode feed. Conventional hydrocarbon fuel processors use a water-gas shift (WGS) reactor to react CO with water to form H2 and reduce the CO concentration. The CO conversion is limited by equilibrium at the outlet temperature of the WGS reactor. The WGS outlet CO concentration can range from over 1% to 2000 ppm depending on the system and its operating parameters. At these concentrations, CO poisons low temperature PEM fuel cells and the concentrations needs to be reduced further.

Inbody, M. A. (Michael A.); Borup, R. L. (Rodney L.); Tafoya, J. (Jose I.)



Special Chemical Properties of RuOx Nanowires in RuOx/TiO2(110): Dissociation of Water and Hydrogen Production  

Science Conference Proceedings (OSTI)

Recently, there has been a strong interest in understanding the role of mixed-metal oxides in catalysts used for the production of hydrogen through the splitting of water. Here, we investigate the structural and chemical properties of RuO{sub x}/TiO{sub 2}(110) surfaces employing scanning tunneling microscopy, photoemission, and density functional calculations. Ruthenium oxide forms unique wirelike structures on top of TiO{sub 2}(110) which are very reactive toward water dissociation, being able to cleave O-H bonds at a temperature as low as 200 K. The calculated barrier for the dissociation of water on RuO{sub 2} nanowires is benchmarks for studying this reaction.

Rodriguez J. A.; Kundu, S.; Vidal, A.B.; Yang, F.; Ramrez, P.J.; Senanayake, S.D.; Stacchiola, D.; Evans, J.; Liu, P.



Special Chemical Properties of RuOx Nanowires in RuOx/TiO2(110): Dissociation of Water and Hydrogen Production  

DOE Green Energy (OSTI)

Recently, there has been a strong interest in understanding the role of mixed-metal oxides in catalysts used for the production of hydrogen through the splitting of water. Here, we investigate the structural and chemical properties of RuO{sub x}/TiO{sub 2}(110) surfaces employing scanning tunneling microscopy, photoemission, and density functional calculations. Ruthenium oxide forms unique wirelike structures on top of TiO{sub 2}(110) which are very reactive toward water dissociation, being able to cleave O-H bonds at a temperature as low as 200 K. The calculated barrier for the dissociation of water on RuO{sub 2} nanowires is <0.05 eV. The presence of easily formable O vacancies in the ruthenium oxide nanowires facilitates the dissociation of water. Furthermore, RuO{sub x}/TiO{sub 2} (110) surfaces are able to catalyze the production of hydrogen through the water-gas shift reaction (H{sub 2}O + CO {yields} H{sub 2} + CO{sub 2}), exhibiting an activity that compares well with the activity found for extended surfaces of copper typically used as benchmarks for studying this reaction.

Rodriguez J. A.; Kundu, S.; Vidal, A.B.; Yang, F.; Ramrez, P.J.; Senanayake, S.D.; Stacchiola, D.; Evans, J.; Liu, P.



On O-X mode conversion in 2D inhomogeneous plasma with a sheared magnetic field  

E-Print Network (OSTI)

The conversion of an ordinary wave to an extraordinary wave in a 2D inhomogeneous slab model of the plasma confined by a sheared magnetic field is studied analytically.

A Yu Popov



CuCoMnOx as a Functional Coating for Solar Absorbers Using Sol ...  

Science Conference Proceedings (OSTI)

Solar thermal heaters are used widely in domestic and industrial applications for heating water or generating electrical power through the use of solar absorber...


080 Low Temperature Specific Heat of BiOX (X=Cl, Br and I) Single ...  

Science Conference Proceedings (OSTI)

005 Calcium Phosphates for Drug Carrier: Adsorption and Release Kinetics of Drugs ... 058 Properties Optimization of Refractory Mineral Resources in China.

Note: This page contains sample records for the topic "ox yg enates" 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.


Theoretical Investigation on Formation Mechanism of fcc-NdOx in ...  

Science Conference Proceedings (OSTI)

Bonded Magnetocaloric Powders for the Refrigeration Application Coercivity ... Industrial Requirements and Applications of Hard Magnetic Materials Influence


www.geog.ox.ac.uk Issue 6: Michaelmas Term 2012 eSoGE News  

E-Print Network (OSTI)

in the Karoo uplands, South Africa: post ­European impacts. Land Degradation and Development. Foxall, A. (2012

Oxford, University of


Publications Portal  

Science Conference Proceedings (OSTI)

... YG Abstract: In interlaboratory comparisons, laboratories sometimes use ... the value of a laboratory standard to ... P Moffat, Gery R Stafford Abstract: In ...



Lanthanum diffusion in the TiN/LaOx/HfSiO/SiO2/Si stack  

Science Conference Proceedings (OSTI)

Band edge Complementary Metal Oxide Semiconductor (CMOS) devices are obtained by insertion of a thin LaO"x layer between the high-k (HfSiO) and metal gate (TiN). High temperature post deposition anneal induces Lanthanum diffusion across the HfSiO towards ... Keywords: APT, ATR-FTIR, HfSiO, Interfacial dipole, La, Metal/high-k stack, S-XPS, Threshold voltage tuning, TiN, ToF-SIMS

E. Martinez; P. Ronsheim; J. -P. Barnes; N. Rochat; M. Py; M. Hatzistergos; O. Renault; M. Silly; F. Sirotti; F. Bertin; N. Gambacorti



On O-X mode conversion in a cold magnetized 2D inhomogeneous plasma in the electron cyclotron frequency range  

E-Print Network (OSTI)

In this paper a reduced set of the partial differential wave equations valid in the conversion layer close to O-mode cutoff surface and accounting for the magnetic field 2D inhomogeneity with no restriction to an angle between the toroidal direction and the magnetic field direction is derived. An integral representation of a solution to the derived set of equation is given. For the particular case of small angle between O mode cut-off surface and X mode cut-off surface an explicit expressions for both the electric field components and the conversion coefficients are obtained and its properties are considered in details.

A. Popov



Dissolution Mechanism of Lime in FeOx-SiO2-V2O3-TiO2 Slag  

Science Conference Proceedings (OSTI)

Nickel Recovery from Sukinda Chromite Overburden Using Shewanella Putrefaciens Optimization of Process Parameters on the Siffusion Bonding of a...


Sn/SnOx Core-Shell Nanospheres: Synthesis, Anode Performance in Li Ion Batteries, and Superconductivity  

Science Conference Proceedings (OSTI)

Sn/SnO{sub x} core?shell nanospheres have been synthesized via a modified polyol process. Their size can be readily controlled by tuning the usage of surface stabilizers and the temperature. Anode performance in Li ion batteries and their superconducting properties is detailed. As anode materials, 45 nm nanospheres outperform both larger and smaller ones. Thus, they exhibit a capacity of about 3443 mAh cm{sup -3} and retain about 88% of after 10 cycles. We propose a model based on the microstructural evolution to explain the size impact on nanosphere performance. Magnetic measurements indicate that the nanospheres become superconducting below the transition temperature T{sub C} = 3.7 K, which is similar to the value obtained in bulk tin. Although T{sub C} does not significantly change with the size of the Sn core, we determined that the critical field H{sub C} of nanospheres can be as much as a factor of 30 larger compared to the bulk value. Alternating current measurements demonstrated that a transition from conventional to filamentary superconducting structure occurs in Sn/SnO{sub x} particles as their size increases. The transition is determined by the relationship between the particle size and the magnetic field penetration depth.

Wang, X.L.; Feygenson, M.; Aronson, M.C.; Han, W.-Q.



Nanopattering in CeOx/Cu(111): A New Type of Surface Reconstruction and Enhancement of Catalytic Activity  

DOE Green Energy (OSTI)

Our results indicate that small amounts of an oxide deposited on a stable metal surface can trigger a massive surface reconstruction under reaction conditions. In low-energy electron microscopy (LEEM) experiments, no reconstruction of Cu(111) is observed after chemisorbing oxygen or after reducing O/Cu(111) in a CO atmosphere. On the other hand, LEEM images taken in situ during the reduction of CeO{sub 2}/CuO{sub 1-x}/Cu(111) show a complex nonuniform transformation of the surface morphology. Ceria particles act as nucleation sites for the growth of copper microterraces once CuO{sub 1-x} is reduced. Can this reconstructed surface be used to enhance the catalytic activity of inverse oxide/metal catalysts? Indeed, CeO{sub x} on reconstructed Cu(111) is an extremely active catalyst for the water-gas shift process (CO + H{sub 2}O {yields} H{sub 2} + CO{sub 2}), with the Cu microterraces providing very efficient sites for the dissociation of water and subsequent reaction with CO.

Rodriguez J. A.; Senanayake, S.D.; Sadowski, J.; Evans, J.; Kundu, S.; Agnoli, S.; Yang, F.; Stacchiola, D.; Flege, J.I.; Hrbek, J.



The Careers Service, University of Oxford, 56 Banbury Road, Oxford, OX2 6PA Phone: (0)1865 274646  

E-Print Network (OSTI)

then be refined in various ways: The KEYWORD SEARCH allows you to enter key words relating to specific job titles analyst' within quotations to include both terms within the search. The ADVANCED SEARCH feature can also students will be directed to the University Single Sign-On Login page, where they will enter

Goldschmidt, Christina


Lokaratna, Volume 2  

E-Print Network (OSTI)

usecg thmgy ddrymilvgzSsei qg Omytsply0g9yg thmgy 8ymM metgpeplvysygLr ligyhrLjgSsei gumlscsreg irmygertgmnsytgpygpg ymdpuptmg isytseatgaptmcruvg8map ymgfpevgrOgthmymgumlscsr ygOmytsplyg isya yymigsegthsyg dpdmugpumglmyygzalpyysaplqgpeigisydlpvg8l...

Mishra, Mahendra Kumar



Characterization of mutagenic activity in grain-based coffee-substitute blends and instant coffees  

SciTech Connect

Several grain-based coffee-substitute blends and instant coffees showed a mutagenic response in the Ames/Salmonella test using TA98, YG1024 and YG1O29 with metabolic activation. The beverage powders contained 150 to 500 TA98 and 1150 to 4050 YG1024 revertant colonies/gram, respectively. The mutagenic activity in the beverage powders was shown to be stable to heat and the products varied in resistance to acid nitrite treatment. Characterization of the mutagenic activity, using HPLC-and the Ames test of the collected fractions, showed the coffee-substitutes and instant coffees contain several mutagenic compounds, which are most likely aromatic amines.

Johansson, M.A.E.; Knize, M.G.; Felton, J.S.; Jagerstad, M.



Answers: Strangler fig, wolverine, roadrunner, Musk ox, Hesperornis, scapolite, mosquito, Pakicetus, coevolution, Galapagos finches, Yucca, Beagle, platypus, milk snake (Lampropeltis triangulum).  

E-Print Network (OSTI)

& Bugtown) Aquatic diver Flightless bird with wings reduced Penguin I am not Minerals a glow Bright yellow stripes black on red Haiku - All ages #12;

Peterson, Blake R.


Behavior of Aqueous Electrolytes in Steam Cycles: The Final Report on the Solubility and Volatility of Copper (I) and Copper (II) Ox ides  

Science Conference Proceedings (OSTI)

Uncontrolled copper transport represents a potentially significant source of performance and reliability loss to fossil plants with mixed-metallurgy feedwater systems. Utility experiences over the last 10 years with severe copper turbine fouling and other related problems identified the need for basic fundamental research to improve industry understanding of the volatility and solubility of copper and its oxides.



Energy Level Alignment in PCDTBT:PC70BM Solar Cells: Solution Processed NiOx for Improved Hole Collection and Efficiency  

SciTech Connect

Solution-based NiO{sub x} outperforms PEDOT:PSS in device performance and stability when used as a hole-collection layer in bulk-heterojunction (BHJ) solar cells formed with poly[N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) and PC70BM. The origin of the enhancement is clarified by studying the interfacial energy level alignment between PCDTBT or the 1:4 blended heterojunctions and PEDOT:PSS or NiO{sub x} using ultraviolet and inverse photoemission spectroscopies. The 1.6 eV electronic gap of PEDOT:PSS and energy level alignment with the BHJ result in poor hole selectivity of PEDOT:PSS and allows electron recombination at the PEDOT:PSS/BHJ interface. Conversely, the large band gap (3.7 eV) of NiO{sub x} and interfacial dipole (0.6 eV) with the organic active layer leads to a hole-selective interface. This interfacial dipole yields enhanced electron blocking properties by increasing the barrier to electron injection. The presence of such a strong dipole is predicted to further promote hole collection from the organic layer into the oxide, resulting in increased fill factor and short circuit current. An overall decrease in recombination is manifested in an increase in open circuit voltage and power conversion efficiency of the device on NiO{sub x} versus PEDOT:PSS interlayers.

Ratcliff, E. L.; Meyer, J.; Steirer, K. X.; Armstrong, N. R.; Olson, D.; Kahn, A.



Centre for the Study of African Economies Department of Economics . University of Oxford . Manor Road Building . Oxford OX1 3UQ  

E-Print Network (OSTI)

the adoption of com- munal palm harvesting (imachi nkwu) in response to commercialization of palm oil among Graduate Student Workshop, the NEUDC, the University of Massachusetts Economic History and Development Workshop, the SITE summer workshop, and the World Economic History Congress for their comments and advice

Oxford, University of


Activities of NbOx in Some CaO-Al2O3-SiO2-Nb2O5 Melts at 1873K  

Science Conference Proceedings (OSTI)

... from Municipal Wastewater Using Raw and Wasted Low Grade Iron Ore with High ... Grade Iron Concentrate by Roasting Siderite Ore with Microwave Energy.


Amorphous Hierarchical Porous GeOx as High-Capacity Anodes for LiIon Batteries with Very Long Cycling Life  

SciTech Connect

Many researchers have focused in recent years on resolving the crucial problem of capacity fading in Li ion batteries when carbon anodes are replaced by other group-IV elements (Si, Ge, Sn) with much higher capacities. Some progress was achieved by using different nanostructures (mainly carbon coatings), with which the cycle numbers reached 100-200. However, obtaining longer stability via a simple process remains challenging. Here we demonstrate that a nanostructure of amorphous hierarchical porous GeO{sub x} whose primary particles are {approx}3.7 nm diameter has a very stable capacity of {approx}1250 mA h g{sup -1} for 600 cycles. Furthermore, we show that a full cell coupled with a Li(NiCoMn){sub 1/3}O{sub 2} cathode exhibits high performance.

Wang, X.L.; Han, W.-Q.; Chen, H.; Bai, J.; Tyson, T.A.; Yu, X.-Q.; Wang, X.-J.; Yang, X.-Q.



Interfacial reactions of Gd- and Nb-oxide based high-k layers deposited by aqueous chemical solution deposition  

Science Conference Proceedings (OSTI)

In this work, ultrathin layers of GdOx, NbOx and GdNbOx, deposited with ACSD have been investigated. Because of the high temperature anneals utilized in the process flow of electronic devices, interactions of the deposited high-k materials and the substrate ... Keywords: ACSD, Ellipsometry, GATR-FTIR, GdNbOx, GdOx, HT-XRD, High temperature anneal, High-k, Interlayer formation, NbOx, Thickness variation

D. Dewulf; N. Peys; S. Van Elshocht; G. Rampelberg; C. Detavernier; S. De Gendt; A. Hardy; M. K. Van Bael



Selective Formation of Size-Controlled Silicon Nanocrystals by Photosynthesis in SiO Nanoparticle Thin Film  

Science Conference Proceedings (OSTI)

The SiOx thin film with a thickness of about 1 mum was formed on a GaAs substrate by bar-coating with the organic solution of the SiOx nanoparticles (~40 nm). The as-formed SiOx thin film consists of the SiOx ... Keywords: ${hbox{SiO}}_{x}$ , Nanocrystal, Raman, photosynthesis, self- limiting, silicon

Changyong Chen; S. Kimura; S. Nozaki; H. Ono; K. Uchida



A Theoretical Insight into the Catalytic Effect of a Mixed-Metal Oxide at the Nanometer Level: The Case of the Highly Active metal/CeOx/TiO2 (110) Catalysts  

SciTech Connect

The structural and electronic properties of CeO{sub x} species supported on the rutile TiO{sub 2}(110) surface have been examined by means of periodic density-functional calculations that use a generalized gradient approximation functional including a Hubbard-like type correction. Deposition of Ce atoms leads in a first step to Ce{sup 3+} ions bound to the surface through bridge and in-plane oxygen atoms, the released electrons occupying the Ti 3d empty orbitals. Further addition of Ce and molecular oxygen gives place to Ce{sub 2}O{sub 3} dimers diagonally arranged on the surface, in agreement with the spots observed in the scanning tunnel microscope images. The formation process of CeO{sub x} nanoparticles (NPs) on the TiO{sub 2} surface is highly exothermic and our calculations show that the redox properties of the Ce(III)-Ce(IV) couple are significantly altered when it is supported on TiO{sub 2}. In particular the reactivity against CO/O{sub 2} indicates that on the surface the presence of Ce(III) is favored over Ce(IV) species. Our results also indicate that the CeO{sub x}/TiO{sub 2} interface should be seen like a real mixed-metal oxide rather than a supported NP of ceria. Finally, in the context of the high catalytic activity of the M/CeO{sub x}/TiO{sub 2} (M = Au,Cu,Pt) systems in the water-gas shift reaction, we have examined the dissociation of water on the CeO{sub x}/TiO{sub 2} surface and estimated a barrier as small as 0.04 eV, i.e. {approx}8 times smaller than that computed for a TiO{sub 2} oxygen vacancy. This result agrees with the experimental superior catalytic activity of the M/CeO{sub x}/TiO{sub 2} systems over M/TiO{sub 2}.

Rodriguez, J.A.; Graciani, J.; Plata, J.J.; Sanz, J.F.; Liu, P.


Note: This page contains sample records for the topic "ox yg enates" 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.


JOURNAL DE PHYSIQUE IV C2-689 Colloque C2, suppl. au Journal de Physique 11, Vol. 1, septembre 1991  

E-Print Network (OSTI)

DEVELOPMENT OF HIGH DENSITY FIBER REINFORCED SILICON CARBIDE FCVI COMPOSITES Y.G. ROMAN*, D.P. STINTON** and T 37831-6063, U.S.A Abstract- Silicon carbide continuous fiber reinforced composites are prepared gradients achieved and critical aspects that play a role in the infiltration process. 1. Introduction Fiber

Paris-Sud XI, Université de


Phase Stability of Two Investment Cast High Chromium Nickel Base ...  

Science Conference Proceedings (OSTI)

lYh. 4. 2 2 x. 2 22. 0 .,o c .t: 2: '+ 0 xv cod yg. & .: 2: 2; 5 0. ;;s $0. 20 Ino ON r+. I .f: LP. 0. ;;;z. FI.+. 2;. 6% . , ail .G. a. 2. $. 2. G. 2 x zi wlc a, .L? 5 .',. c-z. '-. 0. $. ';I?


? ? ? "! ?# "?$? ?!&% ' ?0 214365785 9?@BAC@E D"FHG$IQPS R  

E-Print Network (OSTI)

9?@BAC@E D"FHG$IQPS R. TFHUWVYXa`abcFHd7`f eYg2 hieYbqp IrdWVY`) eYXaIts P$ u vwUE`aIrbxIty IteYd. FHXa te7e. FHXa te7e vwd7` VYXaIte. de.


I!' L;I)  

Office of Legacy Management (LM)

".>;jy i.jp. i,Zz>-c C,+;) ir,i:%J :' 0 p 'd-i I ) f) ic.c iq -.I ,'c i - * w. 3'2 , phi ': r-t;, ; *.i .; I' L;I) --, -II s;.,yE;J-,;* I' ;, f: >,p.yg ,p ' .L (3 i>;'...



Office of Legacy Management (LM)

. s Ihz- --. ,,yg ". 34 I, 3 Willmtc t I z: >. - rNri.rC I* "',V" - -a. k.&y.f . -.. L%l :,. C-i? I <- 1 ., vQ f- i. I-7, T.ittlr ) 9 3r 4 4 a ' 9' C Great Neck; Estiysj...


"!$ #&%(') 0214 351(768')9@ 1(AB DCEF 'HG I) ...  

Science Conference Proceedings (OSTI)

... Qyivghthr SVWRivgh'2 ivu apURg tgeju{'h {SYtyt@ tpejQyiuW j}{ ayURgH ) {SYt tySVYgte g( Wtpgh' 'RSaTS WQpg ...




Office of Legacy Management (LM)

'??Kt fire ?726 reisccnsrcd nnd GxG.rL:* shed i.2 it3 csrUes tqyi by tn;hncd p?Q,cZt pr,l%WlMiL, TJi.th tl &Azy & fonAQinlff C,j-taen t&2 &if&g Sec%ir;n YG D...


High-performance Electrochemical Capacitors - Energy ...  

... metal oxides on the high-surface-area walls of carbon nanofoam papers (0 ... Pairing MnOxcarbon nanofoam with FeOxcarbon nanofoam yields an energy ...


Three-Dimensional Heterometallic Chiral Cr-Mn Compound Constructed by Cyanide and Dicyanamide Bridges  

E-Print Network (OSTI)

magnetochiral dichroism (MChD).3-8 In this regard, materials based on short bridges of oxalate (C2O4 2- , ox more. A series of chiral ox-bridged compounds have been reported through [M(ox)3]3- blocks.4 Inoue-organization processes at present. As mentioned previously, chiral units could be formed from achiral components simply

Gao, Song


Ris Energy Report 6 Energy efficiency policy 1 4 Energy efficiency policy  

E-Print Network (OSTI)

Risø Energy Report 6 Energy efficiency policy 1 4 Energy efficiency policy JENs-PETER LYNOV, RIsø through means ranging from new technologies to new policies. 4.2 Energy conversion As Figure 7 shows DTU; sVEND sVENDsEN, HENRIk M. TOMMERUP, bYg DTU; JøRN bORUP JENsEN, DANIsH ENERgY AssOCIATION 4


Common Event Rule Expression  

Science Conference Proceedings (OSTI)

... Page 26 Incident Response/Management and the Common Cyber Observables (CybOX) Schema ... Content Transformed from Portion of MAEC ...




Science Conference Proceedings (OSTI)

... 1...n Tcl ControlScript ... Oxs.Director* newdtr, // App director Tcl.Interp* safe.interp, // Safe interpreter const char* argstr); // MIF input block parameters ...


The OOMMF eXtensible  

Science Conference Proceedings (OSTI)

... ProblemSpecification OXS Top-Level Class Diagram A Energy A Driver A General Mesh 1...n Tcl ControlScript 1...m A Evolver Rectangular Mesh ...


(12) United States Patent  

Science Conference Proceedings (OSTI)

... located on the opposite side of the stage to remove 40 debris. ... research fluorescence microscope equipped with a lOx objective, a mercury arc lamp ...



Transition metal oxides deposited on rhodium and platinum: Surface chemistry and catalysis  

DOE Green Energy (OSTI)

The surface chemistry and catalytic reactivity of transition metal oxides deposited on Rh and Pt substrates has been examined in order to establish the role of oxide-metal interactions in influencing catalytic activity. The oxides investigated included titanium oxide (TiOx), vanadium oxide (VOx), iron oxide (FeOx), zirconium oxide (ZrOx), niobium oxide (NbOx), tantalum oxide (TaOx), and tungsten oxide (WOx). The techniques used to characterize the sample included AES, XPS, LEED, TPD, ISS, and STM. After characterization of the surface in UHV, the sample was enclosed in an atmospheric reaction cell to measure the influence of the oxide deposits on the catalytic activity of the pure metal for CO and CO{sub 2} hydrogenation. The oxide deposits were found to strongly enhance the reactivity of the Rh foil. The rates of methane formation were promoted by up to 15 fold with the maximum in rate enhancement occurring at oxide coverages of approximately 0.5 ML. TiOx TaOx, and NbOx were the most effective promoters and were stable in the highest oxidation states during both reactions (compared to VOx, WOx, and FeOx). The trend in promoter effectiveness was attributed to the direct relationship between oxidation state and Lewis acidity. Bonding at the metal oxide/metal interface between the oxygen end of adsorbed CO and the Lewis acidic oxide was postulated to facilitate C-O bond dissociation and subsequent hydrogenation. 192 refs.

Boffa, A.B. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry]|[Lawrence Berkeley Lab., CA (United States). Materials Sciences Div.



CHAPTER 4 (Addendum re Corrosion Kinetics) Corrosion Kinetics, WTE Emissions and the Effects of HCl and SO2 to Corrosion  

E-Print Network (OSTI)

: ( )( ) ( )soxoxcon P RT D MZK = (65b) where: Mox = the molar mass of the oxide ox = density of the oxide 4

Columbia University


Circuit, MOSFET, and Front End Process Integration Trends ...  

Science Conference Proceedings (OSTI)

... g , T ox , V dd , V t , series parasitic resistance, drive current, leakage ... High gate leakage Direct tunneling increases rapidly as T ... Pulse Generator ...



Technology Commercialization and Partnerships | BSA 12-01 ...  

We have an emerging technology with a nanostructure of amorphous hierarchical porous GeOx that has a very stable capacity for several hundreds of cycles. Have Questions?


This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 1  

E-Print Network (OSTI)

as presented, with the exception of pagination. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 1, University of Oxford, Oxford, OX1 3PU, U.K. (e-mail: m.johnston@physics.ox.ac.uk). L. Fu and C. Jagadish is final as presented, with the exception of pagination. 2 IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM

Herz, Laura M.


Journal of Power Sources 162 (2006) 10991103 Short communication  

E-Print Network (OSTI)

to the mass of the fully oxidized carrier as follows: = - R m m m o ox red ox (4) where mox and mred of the oxygen carrier () is defined as = m mox (5) where m is the actual mass of the carrier. Equations 6 and 7

Popov, Branko N.

Note: This page contains sample records for the topic "ox yg enates" 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.


PWR core design, neutronics evaluation and fuel cycle analysis for thorium-uranium breeding recycle  

Science Conference Proceedings (OSTI)

This paper was focused on core design, neutronics evaluation and fuel cycle analysis for Thorium-Uranium Breeding Recycle in current PWRs, without any major change to the fuel lattice and the core internals, but substituting the UOX pellet with Thorium-based pellet. The fuel cycle analysis indicates that Thorium-Uranium Breeding Recycle is technically feasible in current PWRs. A 4-loop, 193-assembly PWR core utilizing 17 x 17 fuel assemblies (FAs) was taken as the model core. Two mixed cores were investigated respectively loaded with mixed reactor grade Plutonium-Thorium (PuThOX) FAs and mixed reactor grade {sup 233}U-Thorium (U{sub 3}ThOX) FAs on the basis of reference full Uranium oxide (UOX) equilibrium-cycle core. The UOX/PuThOX mixed core consists of 121 UOX FAs and 72 PuThOX FAs. The reactor grade {sup 233}U extracted from burnt PuThOX fuel was used to fabrication of U{sub 3}ThOX for starting Thorium-. Uranium breeding recycle. In UOX/U{sub 3}ThOX mixed core, the well designed U{sub 3}ThOX FAs with 1.94 w/o fissile uranium (mainly {sup 233}U) were located on the periphery of core as a blanket region. U{sub 3}ThOX FAs remained in-core for 6 cycles with the discharged burnup achieving 28 GWD/tHM. Compared with initially loading, the fissile material inventory in U{sub 3}ThOX fuel has increased by 7% via 1-year cooling after discharge. 157 UOX fuel assemblies were located in the inner of UOX/U{sub 3}ThOX mixed core refueling with 64 FAs at each cycle. The designed UOX/PuThOX and UOX/U{sub 3}ThOX mixed core satisfied related nuclear design criteria. The full core performance analyses have shown that mixed core with PuThOX loading has similar impacts as MOX on several neutronic characteristic parameters, such as reduced differential boron worth, higher critical boron concentration, more negative moderator temperature coefficient, reduced control rod worth, reduced shutdown margin, etc.; while mixed core with U{sub 3}ThOX loading on the periphery of core has no visible impacts on neutronic characteristics compared with reference full UOX core. The fuel cycle analysis has shown that {sup 233}U mono-recycling with U{sub 3}ThOX fuel could save 13% of natural uranium resource compared with UOX once through fuel cycle, slightly more than that of Plutonium single-recycling with MOX fuel. If {sup 233}U multi-recycling with U{sub 3}ThOX fuel is implemented, more natural uranium resource would be saved. (authors)

Bi, G.; Liu, C.; Si, S. [Shanghai Nuclear Engineering Research and Design Inst., No. 29, Hongcao Road, Shanghai, 200233 (China)



European Fusion Theory Conference Non-local features of transport in the axial tokamak region  

E-Print Network (OSTI)

9th European Fusion Theory Conference Non-local features of transport in the axial tokamak region J.P. Christiansen and P. Helander EURATOM/UKAEA Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB


Multi-group Support Vector Machines with measurement costs: a ...  

E-Print Network (OSTI)

dolores.romero-morales@sbs.ox.ac.uk. July 28, 2005 ...... This is the plot the final user will obtain in real-world applications, and chose, with this information, one...


View / Download  

Science Conference Proceedings (OSTI)

the laboratory's reputation as a world- wide leader in ... materials from the University of Ox- ford in England. p g r. S i. P w a. S. Boa the. Ac ha be. 19 on. B to a p.


Confidence Intervals for the Hyperparameters in Structural Models  

E-Print Network (OSTI)

Gerais, 31270-901 - Belo Horizonte - MG, Brazil E-mail: {glauraf,thiagors,jujujar,fcruz}@ufmg.br November. The performance of this procedure is empirically obtained through Monte Carlo simulations implemented in Ox. Asymp

Cruz, Frederico



Office of Legacy Management (LM)

is limited to thb removal OX residual radit3activc material derived from the Sampl.Lng Plant, and ddbs not in any way constitute an.agreement by DOE to remove othez wastes...


Cornwall Light Power CLP | Open Energy Information  

Open Energy Info (EERE)

England, United Kingdom Zip OX11 9DD Sector Wind energy Product Didcot-based developer of wind farms in the UK. References Cornwall Light & Power (CLP)1 LinkedIn Connections...



Science Conference Proceedings (OSTI)

... 6??iNK/L*?Y**m*Y?K?P_#)*?p??,J p3W?J*8*?#?* NC0ox?[b?J?;p*?*?j*mMmPoi?* ...



The impacts of graphene nanosheets and manganese valency on lithium storage characteristics in graphene/manganese oxide hybrid anode  

Science Conference Proceedings (OSTI)

Graphene nanosheets (GNS) with attached MnOx nanoparticles are studied in regard to their structure and morphology. The relationship between the lithium storage performances and GNS contents as well as manganese valency was investigated. Experimental ...

S. L. Cheekati; Z. Yao; H. Huang



Microsoft PowerPoint - Proceedings Cover Sheets  

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

Forcing of zero emissions piston engine by oxygen enrichment in membrane reactor (Hi-Ox ZEMPES project) May 8-11, 2006 * Hilton Alexandria Mark Center * Alexandria, Virginia Mikola...


Microsoft Word - Blurbs for Nik.doc  

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

1 Unstable if heated ALK-alkali 2 Violent chemical change COR-corrosive 3 Shock or heat may detonate OX-oxidizer 4 Rapidly capable of detonation or explosion...


Photoelectrochemical Hydrogen Production Using New Combinatorial Chemistry Derived Materials  

E-Print Network (OSTI)

red ox (6) where mox and mred are the mass of the oxygen carrier in fully oxidized and reduced state, respectively. The mass-based conversion of the oxygen carrier, , is defined as: = m mox (7) where m


Laser Inertial Fusion-based Energy: Neutronic Design Aspects of a Hybrid Fusion-Fission Nuclear Energy System  

E-Print Network (OSTI)

Code MFE Magnetic Fusion Energy MOX Mixed Oxide NES Nuclearreprocessing mixed oxide (MOX) fuels, as will be discussedbegun using Mixed ox- ide or MOX fuel as a means of both

Kramer, Kevin James



Tunable Transmittance of Near-infrared and Visible Light in Reconstruc...  

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

(ICMAB, Spain) have demonstrated the power of this approach by introducing tin-doped indium oxide nanocrystals (ITO NCs) into niobium oxide glass (NbOx) and showing that a new...


GEOMETRIA I TEMA I: Calculo matricial y Geometria lineal clasica  

E-Print Network (OSTI)

· ´Atomos de carbono a - c = 0 · ´Atomos de ox´igeno 2b - 2c - d = 0 · ´Atomos de hidr´ogeno 4a - 2d = 0 As

Milán, Francisco


Decomposition of old organic matter as a result of deeper active layers in a snow depth manipulation experiment  

E-Print Network (OSTI)

fate of radiocarbon from nuclear weapons testing in the mid-12C OX1;19 Prior to nuclear weapons testing and the adventdramatically due to nuclear weapons testing in the mid-

Nowinski, Nicole S.; Taneva, Lina; Trumbore, Susan E.; Welker, Jeffrey M.



Phase Relations for the Ce2O3-Al2O3-CaO System at Steelmaking ...  

Science Conference Proceedings (OSTI)

Thermodynamic properties of the constituent oxide in the inclusion system as ... of ReOx-Al2O3-CaO systems are strongly required for the accurate control of...


Perturbative Methods in Path Integration  

E-Print Network (OSTI)

RR d with the natural projections, and f = S. Then C is theN R N ? N N denote projection onto the second and lastunderstand algebraically the projection O(X) ? O(X)/{total

Johnson-Freyd, Theodore Paul



Office of Science and Technology & International Year End Report - 2005  

E-Print Network (OSTI)

Bo Bodvarsson, Mark Peters, and Joe H. Payer ? RadionuclidePless, and J. Benjamin Chwirka BiOX-Based Solid RadionuclideMattigod (Co-Director), Radionuclide Getters Thrust Area

Bodvarsson, G.S.



Fermilab Today  

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

magnet technology. Bi-2212 (Bi2Sr2CaCu2Ox) is one of the copper-oxide high-temperature superconductors discovered 27 years ago. Since then, attention has focused on the use of...

Note: This page contains sample records for the topic "ox yg enates" 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.


View - Optimization Online  

E-Print Network (OSTI)

accuracy and v(xk) is not sufficiently small, or if the new constraint violation satisfies ...... RRR 12-94, Rutgers University, New Brunswick, NJ, USA. ... Nonlinear Optimization, Technical Report, Rutherford Appleton Laboratory, Chilton, Ox-.



E-Print Network (OSTI)

?Department of Statistics, University of Oxford, 1 South Parks Road, Oxford OX1 3TG, ..... Hence if the restoration phase does terminate then. the point ...... merical Analysis Proceedings Dundee 1981, edited by G.A. Watson, Lecture Notes ... tors


Amtsblatt der Europischen Union L 235/1 (Verffentlichungsbedrftige Rechtsakte, die in Anwendung des EG-Vertrags/Euratom-Vertrags erlassen wurden)  

E-Print Network (OSTI)

. Gas Ox. Gas 1 Acute Tox. 2 * Skin Corr. 1B H270 H330 H314 GHS04 GHS03 GHS06 GHS05 Dgr H270 H330 H314-SACremmuN-GEgnunhciezeBehcsimehcelanoitanretnI.rN-xednI #12;AmtsblattderEuropäischenUnionL235/5 009-001-00-0 fluorine 231-954-8 7782-41-4 Press. Gas Ox. Gas 1,5 % C Gas

Kersting, Roland


Modeling the overcharge process of VRLA batteries , G.Q. Wang, C.Y. Wang*  

E-Print Network (OSTI)

of three domains: the negative composite electrode, separator and positive composite electrode. During the inner regions of metal oxide active material particles (solid phase). The porous separator serves electronic current at the separator, o/s ox x¼d? ¼ o/s ox x¼d?þdsep ¼ 0: ð8? In Eqs. (6)­(8), /s(x, t


Multi-stage, isothermal CO preferential oxidation reactor  

DOE Patents (OSTI)

A multi-stage, isothermal, carbon monoxide preferential oxidation (PrOx) reactor comprising a plurality of serially arranged, catalyzed heat exchangers, each separated from the next by a mixing chamber for homogenizing the gases exiting one heat exchanger and entering the next. In a preferred embodiment, at least some of the air used in the PrOx reaction is injected directly into the mixing chamber between the catalyzed heat exchangers.

Skala, Glenn William (Churchville, NY); Brundage, Mark A. (Pittsford, NY); Borup, Rodney Lynn (East Rochester, NY); Pettit, William Henry (Rochester, NY); Stukey, Kevin (W. Henrietta, NY); Hart-Predmore, David James (Rochester, NY); Fairchok, Joel (Alexander, NY)



Hoja 7 Calculo I Primero de Ingenieria Informatica Curso 20122013 Calculo de primitivas  

E-Print Network (OSTI)

a nivel del mar? Responde a la misma pregunta para el hidr´ogeno, para el que C = 0.006. c) Teniendo en cuenta que a nivel del mar hay unas 400 000 mol´eculas de ox´igeno por cada una de hidr´ogeno, ¿a qu´e altura habr´a m´as hidr´ogeno que ox´igeno? 3 #12;

Fernández Gallardo, Pablo


Hoja 8 Calculo I Primero de Ingenieria Informatica Curso 20112012 Calculo de areas  

E-Print Network (OSTI)

hidr´ogeno, para el que C = 0.006. c) Teniendo en cuenta que a nivel del mar hay unas 400 000 mol´eculas de ox´igeno por cada una de hidr´ogeno, ¿a qu´e altura habr´a m´as hidr´ogeno que ox´igeno? 18

Fernández Gallardo, Pablo


Mineria de datos sobre grafos: un enfoque multiobjetivo aplicado a bioremediacion  

E-Print Network (OSTI)

conceptual est´a formado por todos los posibles ´atomos (e.g., carbono #12;(C), ox´igeno (O), hidr´ogeno (H y 5, un nitr´ogeno (N) etiquetado como 6, un ox´igeno (O) etique- tado como 9 y 5 hidr´ogenos (H asociados. Por ejemplo, el primer carbono presenta 4 enlaces covalentes simples con 3 hidr´ogenos y un

Granada, Universidad de


Oxidized-LDL induce morphological changes and increase stiffness of endothelial cells  

SciTech Connect

There is increasing evidence suggesting that oxidized low-density lipoproteins (ox-LDL) play a critical role in endothelial injury contributing to the age-related physio-pathological process of atherosclerosis. In this study, the effects of native LDL and ox-LDL on the mechanical properties of living human umbilical vein endothelial cells (HUVEC) were investigated by atomic force microscopy (AFM) force measurements. The contribution of filamentous actin (F-actin) and vimentin on cytoskeletal network organization were also examined by fluorescence microscopy. Our results revealed that ox-LDL had an impact on the HUVEC shape by interfering with F-actin and vimentin while native LDL showed no effect. AFM colloidal force measurements on living individual HUVEC were successfully used to measure stiffness of cells exposed to native and ox-LDL. AFM results demonstrated that the cell body became significantly stiffer when cells were exposed for 24 h to ox-LDL while cells exposed for 24 h to native LDL displayed similar rigidity to that of the control cells. Young's moduli of LDL-exposed HUVEC were calculated using two models. This study thus provides quantitative evidence on biomechanical mechanisms related to endothelial cell dysfunction and may give new insight on strategies aiming to protect endothelial function in atherosclerosis.

Chouinard, Julie A. [Laboratoire de Bioingenierie et de Biophysique de l'Universite de Sherbrooke, Department of Chemical Engineering, Universite de Sherbrooke, Sherbrooke, Quebec (Canada); Research Centre on Aging, Sherbrooke Geriatric University Institute, Sherbrooke, Quebec (Canada); Grenier, Guillaume [Research Centre on Aging, Sherbrooke Geriatric University Institute, Sherbrooke, Quebec (Canada); Department of Surgery, Service of Orthopaedic, Faculty of Medicine, Universite de Sherbrooke, Sherbrooke, Quebec (Canada); Khalil, Abdelouahed [Research Centre on Aging, Sherbrooke Geriatric University Institute, Sherbrooke, Quebec (Canada); Department of Medicine, Service of Geriatry, Faculty of Medicine, Universite de Sherbrooke, Sherbrooke, Quebec (Canada); Vermette, Patrick [Laboratoire de Bioingenierie et de Biophysique de l'Universite de Sherbrooke, Department of Chemical Engineering, Universite de Sherbrooke, Sherbrooke, Quebec (Canada); Research Centre on Aging, Sherbrooke Geriatric University Institute, Sherbrooke, Quebec (Canada)], E-mail: Patrick.Vermette@USherbrooke.ca



Hydrogen Solar Ltd | Open Energy Information  

Open Energy Info (EERE)

Ltd Ltd Jump to: navigation, search Name Hydrogen Solar Ltd Place Guildford, United Kingdom Zip GU2 7YG Sector Hydro, Hydrogen, Solar Product Hydrogen Solar Ltd is developing innovative technology to convert sunlight directly into hydrogen fuel for vehicle refueling and other applications. Coordinates 51.237086°, -0.570516° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.237086,"lon":-0.570516,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}


David J. Szalda's List of Publications  

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

David J. Szalda: David J. Szalda: List of Publications Towards the Photoreduction of CO2 with Ni (bpy)n2+ Complexes, Mori, Y.; Szalda, D. J.; Brunschwig, B. S.; Schwarz, H. A.; Fujita, E. In Photochemistry and Radiation Chemistry: Complementary Methods for the Study of Electron Transfer, Advances in Chemistry;, ; Wishart, J. F. and Nocera, D. G., Eds.;, Eds.; American Chemical Society: Washington, DC, in press; . Abstract Hydride Transfer Reactions of Transition Metal Hydrides in the Preparation of [Cp(CO)3W(h1-aldehyde)]+ OTf- and [Cp(CO)3W(h1-ketone)]+ OTf-Complexes, Song, J.-S.; Szalda, D. J.; Bullock, R. M. Inorg. Chim. Acta 1997, 259, 161-172. Abstract Electronic and Molecular Structures of Pentaammineruthenium Pyridine and Benzonitrile Complexes as a Function of Oxidation State, Shin, Y.-g.



Office of Legacy Management (LM)

p.1, p.1, , 1' 3 ' - j ttEMORANDUtl TO: FILE - FJ+u? /WI - /3 DATE 2 /I/ / 9 / ----------^--______ FROti: D. s-f&J ---------------- SUBJECT: SITE NAME: --_-__----__-_--- _____ &----w' I+& - f*/crq ALTERNATE A t=l r---i ted ____ NAME: -----------__-________ CITY: ~+ZZL------ _______ STATE: ------ ff+$- OWNER(S) --y;;g-- && - /??#A~ ------------------------ Current: &v CA-J--;cJ Owner contacted ~--yes 0 noi -.-------me-we------- if yes, date contacted _ //t*/4/ -e-----N------ TYPE OF OPERATION ----------------- B Research & Development 0 Production scale testing B Pilot Scale 0 Bench Scale Process 0 Theoretical Studies 0 Sample S( Analysis 0 Production 0 Disposal /Storage TYPE OF CONTRACT ---------------- Ei 0 Prime Subcontractor



Office of Legacy Management (LM)

CUSSSFIC4TION CMUXLLq CUSSSFIC4TION CMUXLLq RITE AUG 1 7 1962 Fcx the Atomic. Energy Commisaion~ Chief. Declaseifle@tlon Brar\qh F-mm A. B. Grsaingsr (Other ends tifmtioel) The die wae foutq3 to workvery satiafactorilywiti thlanew Qpeof incert, andncm,of tbepmvLouedsfeotaofeoo+tH&' iOitYwaslmd. D&e& ._: . . ..YG ~Kl.3. i>ro;rid3 -&I:: clcsuro on bct.k.mds of the .plece m & Die #l, is also to be tried outoo 4zgust22. Barr~l~or~~~Die~~hadalaobeenawlLfiedta' plwidesd~do~- rwrdaM,thatSibs.of~~oouldbe~etoflow~gbtheLliearoundtbe surface of the wend overf'lo~lnto abarrel lvcatedundemeath the die. Under th?3e conditions "b8rre.l type' aaatjngs sere made with hardly any plvmure at all andrefaulthg ooatiiage were,of mums, vergporousand~eot. However, the


Mr. Wayne Klassing Klassing Handbrake Company  

Office of Legacy Management (LM)

, , '? 4,"?+s64!!m .a j ,; 1 -T ' a j II. 7 . iII4.J OCT 2 O 19199 . - Mr. Wayne Klassing Klassing Handbrake Company P.O. Box 860 Joliet, Illinois 60434 o a & E D @- r 1 /I i' .' .; rJ - -- -.--. -.- ' % \I! ,yG9 I .._M -' ?J -2 F K 1 - - /89 Dear Hr. Edmonds: Enclosed is a copy of the final survey report for your facility in Joliet, Illinois, which is the-site of the former W. E. Pratt Nanufacturing Company. This survey report documents the fact that the radiological condition of your facility is in compliance with applicable Department of Energy Guidelines and that no remedial action or further investigations are necessary. If you have any questions regarding the survey results or our associated actions, contact Mr. James Wagoner of my staff at


Complexation of Am(III) by oxalate in NaClO{sub 4} media  

SciTech Connect

The complexation of Am(III) by oxalate has been investigated in solutions of NaClO{sub 4} up to 9.0 M ionic strength at 25{degrees}C. The dissociation constants of oxalic acid were determined by potentiometric titration, while the stability constants of the Am(III)-oxalate complexation were measured by the solvent extraction technique. A thermodynamic model was constructed to predict the apparent equilibrium constants at different ionic strengths by applying the Pitzer equation using parameters for the Na{sup +}-HOx{sup -}, Na{sup +}-Ox{sup -}, AmOx{sup +}-ClO{sub 4}{sup -}, and Na{sup +}-Am(Ox){sub 2}{sup -} interactions obtained by fitting the data.

Choppin, G.R.; Chen, J.F. [Florida State Univ., Tallahassee, FL (United States)



High temperature crystalline superconductors from crystallized glasses  

DOE Patents (OSTI)

A method of preparing a high temperature superconductor from an amorphous phase. The method involves preparing a starting material of a composition of Bi.sub.2 Sr.sub.2 Ca.sub.3 Cu.sub.4 Ox or Bi.sub.2 Sr.sub.2 Ca.sub.4 Cu.sub.5 Ox, forming an amorphous phase of the composition and heat treating the amorphous phase for particular time and temperature ranges to achieve a single phase high temperature superconductor.

Shi, Donglu (Downers Grove, IL)



Graded index and randomly oriented core-shell silicon nanowires with broadband and wide angle antireflection for photovoltaic cell applications  

E-Print Network (OSTI)

Antireflection with broadband and wide angle properties is important for a wide range of applications on photovoltaic cells and display. The SiOx shell layer provides a natural antireflection from air to the Si core absorption layer. In this work, we have demonstrated the random core-shell silicon nanowires with both broadband (from 400nm to 900nm) and wide angle (from normal incidence to 60\\degree) antireflection characteristics within AM1.5 solar spectrum. The graded index structure from the randomly oriented core-shell (Air/SiOx/Si) nanowires may provide a potential avenue to realize a broadband and wide angle antireflection layer.

Pignalosa, P; Qiao, L; Tseng, M; Yi, Yasha



Numerical modelling of current transfer in nonlinear anisotropic conductive media  

E-Print Network (OSTI)

load vector and components of f jiM,M global damping matrix and components of M U nodal points of W Index of abbreviations HTS high temperature superconductor Bi-2212 Bi2Sr2CaCu2Ox Y-123 YBa2Cu3Ox EJ the electric field dependence upon the local current... experimental technique is presented. A mathematical analysis is also outlined that enables part of the magnetic field profile to be deduced directly from transport measurements. Chapter 4 discusses the principal approaches used in the numerical solution...

Baranowski, Robert Paul


The PeTroleum InsTITuTe Annual report 2008 -2009 The PeTroleum InsTITuTe  

E-Print Network (OSTI)

-unIveRsITy of mARylAnd evAluATIng solId oxIde fuel cell sysTems foR5. oPeRATIon on PeTRoleum off-gAses wITh conARylAnd sImulATIon, oPTImIzATIon And conTRol of solId6. oxIde fuel cell sysTems dR. AlI AlmAnsooRI (PI) d Cell (SOFC) Systems for Operation on Petroleum Off-Gases with Contaminants This project is one


CSP is expressive enough for A.W. Roscoe  

E-Print Network (OSTI)

CSP is expressive enough for A.W. Roscoe Oxford University Computing Laboratory {Bill.Roscoe@comlab.ox.ac.uk} Abstract. Recent results show that Hoare's CSP, augmented by one additional operator, can express every operator whose operational semantics are expressible in a new notation and are therefore "CSP

Oxford, University of

Note: This page contains sample records for the topic "ox yg enates" 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.


FDR3 --A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong,  

E-Print Network (OSTI)

FDR3 -- A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong, Alexandre.roscoe}@cs.ox.ac.uk Abstract. FDR3 is a complete rewrite of the CSP refinement checker FDR2, incorporating a significant number describe the new algorithm that FDR3 uses to construct its in- ternal representation of CSP processes

Oxford, University of


Journal of Nuclear Materials, Volumes 367-370, 2007, 1586-1589 Designing Optimised Experiments for the International Fusion  

E-Print Network (OSTI)

for the International Fusion Materials Irradiation Facility R. Kemp1 G.A. Cottrell2 and H.K.D.H. Bhadesia1 1 Department EURATOM/UKAEA Fusion Association, Culham Science Centre, Abingdon, Oxon., OX14 3DB, UK Abstract The development of fusion power requires a facility for assessing the behaviour of materials subjected to damage

Cambridge, University of


The uniqueness case G. Stroth  

E-Print Network (OSTI)

2 oe(M) we have mp(K) 3 and mp(CIM(K)) 1. 1 #12(G) M and one of the following holds (i) If x 2 P, o(x) = p, mp(CIM(x)) 3, then NG (

Stroth, Gernot


Universit degli Studi di Firenze Facolt di Ingegneria  

E-Print Network (OSTI)

Sonda pH Sonda ORP Sonda DO Relays di commutazione degli attuatori Figura 1 - Vista di insieme del SBR potenziale RedOx (ORP) e l'ossigeno disciolto (DO) attraverso le quali un sistema inferenziale ricostruisce intervalli regolari i tre dati segnali di processo (DO, pH, ORP) vengono campionati e dopo un opportuno


Bootstrap solutions in a vector-meson model - Springer  

Science Conference Proceedings (OSTI)

~'here g is the PPV coupling constant (~) a, nd O(x) the unit step function. In (2.11 ) the ... perhaps the simplest way is to replace the left-hand discontinuity by a finite sum of multiples of ..... The solutions obtained in Seer. 4 satisfy .... Page 13...


Evolution of Microstructure During Hot Rolling if Inconel Alloys 625 ...  

Science Conference Proceedings (OSTI)

grain size on flow stress during hot deformation of alloy 718. .... Production billets, 15Ox200mm (6x8) cross section, of alloys 625 and 718 were rolled ... thermal interactions between the roll and sample and interpass heat transfer considered.


Journal of Power Sources 196 (2011) 18021807 Contents lists available at ScienceDirect  

E-Print Network (OSTI)

-based anion- exchange membranes with the radiation-grafting method. The tests showed that OH- conductivity could be as high as 0.06 S cm-1 at 60 C. Yanagi and Fukuta [17] tested the durability of a commer- cial] reported that MnOx/C electrocatalysts directed the ORR toward the four-electron pathway, and indicated

Zhao, Tianshou


Mixed-Conducting Oxygen Permeable Ceramic Membrane and its Application in the Production of Synthesis Gas.  

E-Print Network (OSTI)

??This study detailedly investigated the effects of the preparation parameters on the performance of Ba0.5Sr0.5Co0.8Fe0.2Ox (BSCF) membranes. In addition, the dominant step of the oxygen (more)

Jiang, Qiying



Mixed Ionic/Electronic Conducting Ceramic Membranes for Oxygen-Assisted CO2 Reforming.  

E-Print Network (OSTI)

??Incorporating a SrFeCo0.5Ox (SFC) membrane into a CO2 reforming reactor doubles methane conversion with a powder Pt/ZrO2 catalyst. The deactivation of both Pt/ZrO2 and a (more)

Slade, David



Regional Recovery Framework for a Biological Attack in the Seattle Urban Area  

E-Print Network (OSTI)

imaging techniques · Unconventional oil and gas recovery · Gas hydrates · Nano-sensors Cross recovery Unconventional resources Renewable fuels Carbon dioxide Public policy Environmental/health #12;The and commercializing OxProp a "controlled buoyancy proppant" that is expected to materially enhance oil and gas


THE SNO COLLABORATION M. G. Boulay, M. Chen, F. A. Duncan, E. D. Earle, H. C. Evans, G. T. Ewan, R. J. Ford, A. L. Hallin,  

E-Print Network (OSTI)

.S.Neubauer, F. M. Newcomer, V. Rusu, R. Van Berg, R. G. Van de Water, P. Wittich. University of Pennsylvania. University of Oxford, Oxford OX1 3NP, United Kingdom. J. Boger, R. L Hahn, J.K. Rowley, M. Yeh Brookhaven Support structure for 9500 PMTs, concentrators Urylon liner Vectran support ropes 1700 tonnes light water


NATURE PHYSICS | VOL 9 | DECEMBER 2013 | www.nature.com/naturephysics 755 news & views  

E-Print Network (OSTI)

power plants. William Morris is at the Culham Centre for Fusion Energy, Abingdon, Oxfordshire, OX14 3DBNATURE PHYSICS | VOL 9 | DECEMBER 2013 | www.nature.com/naturephysics 755 news & views waves on another key aspect of tokamaks -- the power exhaust. Most tokamaks have so-called divertors where plasma

Loss, Daniel



E-Print Network (OSTI)

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 17, NO. 1, JANUARY/FEBRUARY 2011 17 are with the Clarendon Laboratory, Department of Physics, University of Oxford, Oxford, OX1 3PU, U.K. (e-mail: m OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 17, NO. 1, JANUARY/FEBRUARY 2011 Fig. 1. Surface

Herz, Laura M.


The distribution of neodymium isotopes in Arctic Ocean basins Don Porcelli a,*, Per S. Andersson b  

E-Print Network (OSTI)

, University of Oxford, Parks Road, Oxford OX1 3PR, UK b Laboratory for Isotope Geology, Swedish MuseumThe distribution of neodymium isotopes in Arctic Ocean basins Don Porcelli a,*, Per S. Andersson b of Natural History, Box 50007, SE-104 05 Stockholm, Sweden c Department of Geology, Wayne State University

Baskaran, Mark


Extending Globus to support Multicast Transmission  

E-Print Network (OSTI)

.escience.cam.ac.uk Cardiff agents-comsc.grid.cf.ac.uk Daresbury gridmon.dl.ac.uk Glasgow cordelia.nesc.gla.ac.uk Imperial mariner.lesc.doc.ic.ac.uk Manchester vermont.mvc.mcc.ac.uk Newcastle ramshope.ncl.ac.uk Oxford esci1.oucs.ox.ac.uk Rutherford gridmon...

Jeacle, Karl; Crowcroft, Jon



NR Pu SEIS Advisory 07272012_Clean  

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

Savannah R iver O perations O ffice P.O. B ox A Aiken, S C 2 9802 http:sro.srs.govindex.html SAVANNAH R IVER O PERATIONS O FFICE AIKEN, S C 2 9802 NEWS M EDIA C ONTACTS: FOR I...


Job quality in Europe  

E-Print Network (OSTI)

602 ISSN 0019-8692 2008 The Author(s) Journal compilation 2008 Blackwell Publishing Ltd, 9600 Garsington Road, Oxford OX4 2DQ, UK and 350 Main St., Malden, MA 02148, USA. JOBNAME: No Job Name PAGE: 2 SESS: 49 OUTPUT: Tue Aug 19 17:58:42 2008 /v2503...

Burchell, Brendan J.; Smith, Mark; Fagan, Colette; OBrien, Catherine



Oxford Colleges On-line Reports for Tutorials  

E-Print Network (OSTI)

of the term tutorial arrangements are normally entered into OxCORT by someone with a College role the [Enter] key between each one. b. Click button, search for, and select, the relevant student/s (see and the correct Term and Year and click the button. 5. You will see a list of report setups that match the search

Goldschmidt, Christina



E-Print Network (OSTI)

and statistical analysis Clinical experience of pain management Personal characteristics Ability to work-Operative Pain Study (OxPPOPS), which has been designed to look at the presence of pain (requiring analgesia) one on patients (training will be given) · To distribute, collect and collate data from questionnaires (both

Johnston, Michael



E-Print Network (OSTI)

, Keble Road, Oxford OX1 3RH, UK Abstract. We investigate the kinematic and chemical evolution of distant. For this reason, we analyse the kinematic and chemical evolution of distant E+S0 galaxies in various environments] and Abell 2390 [3], are very similar, we combine them and explore a total number of 96 E+S0 galaxies at z#24

Balogh, Michael L.

Note: This page contains sample records for the topic "ox yg enates" 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 (OSTI)

, Keble Road, Oxford OX1 3RH, UK Abstract. We investigate the kinematic and chemical evolution of distant regions. For this reason, we analyse the kinematic and chemical evolution of distant E+S0 galaxies rich clusters, Abell 2218 [6] and Abell 2390 [3], are very similar, we combine them and explore a total

Ziegler, Bodo Leonhardt


From single-molecule magnetism to long-range ferromagnetism in Hpyr[Fe17O16(OH)12(py)12Br4]Br4  

E-Print Network (OSTI)

, Chalk River Laboratories, Chalk River, Canada K0J 1J0 5ISIS, Rutherford Appleton Laboratory, Didcot OX11 or "molecular spin" at sufficiently low temperatures.1­3 A uniaxial molecular anisotropy due to the crystal LRMO . The large molecular spins in these crystals take the place of the individual magnetic ions

Ryan, Dominic


M. Amin/ Automation, Control, and Complexity: An Integrated Approach, Samad & Weyrauch (Eds.), John Wiley and Sons, pp. 263-286,2000 National Infrastructures as Complex  

E-Print Network (OSTI)

current limiter SOFC Solid oxide fuel cell SSRes Residual or error sum of squares SRP Salt River Project- ~650 °C H2, CO, CH4, other hydro- carbon >50% 200 kW - MW, CHP Solid oxide FC (SOFC) Solid Ox- ide

Amin, S. Massoud



E-Print Network (OSTI)

BIOMASS BURNING IN THE AMAZON: LINKS BETWEEN BURNING, SCIAMACHY TRACE GASES, AND AEROSOL@atm.ox.ac.uk AEROSOL AND GAS PROPERTIESSEASONALITY OF BURNING Biomass burning in the Amazon shows strong seasonal counts are generally highest up to 3 months after the burning of ground. ACKNOWLEDGEMENTS ESA


I I  

Office of Legacy Management (LM)

- - --- --- -e-e. . 3.7' < 50 T rwi - --L-P--, I- -- ----- ' 18 -- ,'. ,r,wood*nl,or,orIcc. 50 V.tn IIICII rlitC*:. Vo-.l'kwd. Ilcw Jt.t:.,:y OX;?:;. f'l,.n ' b...


Atmos. Chem. Phys., 11, 45574576, 2011 www.atmos-chem-phys.net/11/4557/2011/  

E-Print Network (OSTI)

-4557-2011 © Author(s) 2011. CC Attribution 3.0 License. Atmospheric Chemistry and Physics Modeling the Frozen- acterized by low potential vorticity (PV) and high nitrous ox- ide (N2O), was advected poleward and became) chemistry and transport model, the GEOS-5/MERRA Replay model, and the Van Leer Icosahe- dral Triangular

Meskhidze, Nicholas


Gretkhen Geshtaltn Bay Khayim Grade Un Sol Belov / Laundry Characters By Chaim Grade and Saul Bellow  

E-Print Network (OSTI)

n*Bns* *7 ,3*ni *T 08^ V^x oio n ni7S. T*! ^ 08nya -iso*i78niaOirn agrr "pK aaxa n*a- oio oy -o*n8 o*x o*s oy nyra iy

Fisher:, Bernard



Turing and Non-Turing Computers: A Tale of Two Complexities  

E-Print Network (OSTI)

Turing and Non-Turing Computers: A Tale of Two Complexities Ed Blakey ed.blakey@queens.oxon.org http://users.ox.ac.uk/~quee1871/ Computing 2011 20.x.2011 Oxford University Computer Science Department #12;Computational complexity. Why? Want to quantify efficiency of computers and difficulty

Martin, Ralph R.


Hafnium-doped tantalum oxide high-k gate dielectric films for future CMOS technology  

E-Print Network (OSTI)

A novel high-k gate dielectric material, i.e., hafnium-doped tantalum oxide (Hf-doped TaOx), has been studied for the application of the future generation metal-oxidesemiconductor field effect transistor (MOSFET). The film's electrical, chemical, and structural properties were investigated experimentally. The incorporation of Hf into TaOx impacted the electrical properties. The doping process improved the effective dielectric constant, reduced the fixed charge density, and increased the dielectric strength. The leakage current density also decreased with the Hf doping concentration. MOS capacitors with sub-2.0 nm equivalent oxide thickness (EOT) have been achieved with the lightly Hf-doped TaOx. The low leakage currents and high dielectric constants of the doped films were explained by their compositions and bond structures. The Hf-doped TaOx film is a potential high-k gate dielectric for future MOS transistors. A 5 ?? tantalum nitride (TaNx) interface layer has been inserted between the Hf-doped TaOx films and the Si substrate to engineer the high-k/Si interface layer formation and properties. The electrical characterization result shows that the insertion of a 5 ?? TaNx between the doped TaOx films and the Si substrate decreased the film's leakage current density and improved the effective dielectric constant (keffective) value. The improvement of these dielectric properties can be attributed to the formation of the TaOxNy interfacial layer after high temperature O2 annealing. The main drawback of the TaNx interface layer is the high interface density of states and hysteresis, which needs to be decreased. Advanced metal nitride gate electrodes, e.g., tantalum nitride, molybdenum nitride, and tungsten nitride, were investigated as the gate electrodes for atomic layer deposition (ALD) HfO2 high-k dielectric material. Their physical and electrical properties were affected by the post metallization annealing (PMA) treatment conditions. Work functions of these three gate electrodes are suitable for NMOS applications after 800?°C PMA. Metal nitrides can be used as the gate electrode materials for the HfO2 high-k film. The novel high-k gate stack structures studied in this study are promising candidates to replace the traditional poly-Si-SiO2 gate stack structure for the future CMOS technology node.

Lu, Jiang




SciTech Connect

We have compiled a catalog of optically selected quasars with simultaneous observations in UV/optical and X-ray bands by the Swift Gamma-ray Burst Explorer. Objects in this catalog are identified by matching the Swift pointings with the Sloan Digital Sky Survey Data Release 5 quasar catalog. The final catalog contains 843 objects, among which 637 have both Ultraviolet Optical Telescope (UVOT) and X-Ray Telescope (XRT) observations and 354 of which are detected by both instruments. The overall X-ray detection rate is {approx}60% which rises to {approx}85% among sources with at least 10 ks of XRT exposure time. We construct the time-averaged spectral energy distribution (SED) for each of the 354 quasars using UVOT photometric measurements and XRT spectra. From model fits to these SEDs, we find that the big blue bump contributes about {approx}0.3 dex to the quasar luminosity. We re-visit the {alpha}{sub ox}-L{sub 2500A} relation by selecting a clean sample with only Type 1 radio-quiet quasars; the dispersion of this relation is reduced by at least 15% compared with studies that use non-simultaneous UV/optical and X-ray data. We only found a weak correlation between L{sub bol}/L{sub Edd} and {alpha}{sub UV}. We do not find significant correlations between {alpha}{sub x} and {alpha}{sub ox}, {alpha}{sub ox} and {alpha}{sub UV}, and {alpha}{sub x} and log L(0.3-10 keV). The correlations between {alpha}{sub UV} and {alpha}{sub x}, {alpha}{sub ox} and {alpha}{sub x}, {alpha}{sub ox} and {alpha}{sub UV}, L{sub bol}/L{sub Edd} and {alpha}{sub x}, and L{sub bol}/L{sub Edd} and {alpha}{sub ox} are stronger among low-redshift quasars, indicating that these correlations are likely driven by the changes of SED shape with accretion state.

Wu Jian; Grupe, Dirk; Koch, Scott; Gelbord, Jonathan; Schneider, Donald P.; Gronwall, Caryl; Porterfield, Blair L. [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States); Vanden Berk, Daniel; Wesolowski, Sarah, E-mail: jwu@astro.psu.edu [Department of Physics, Saint Vincent College, 300 Fraser Purchase Road, Latrobe, PA 15650 (United States)



CT NC0  

Office of Legacy Management (LM)

x-L* d! x-L* d! CT NC0 - i , ,. i, .' i :.:(e.!' ,A\~, L.,t, - (iI :i' , . y- 2 .L i ._ 1 c\ :- i;! Ii $ 4. Ci:lc:i.nnati. 39, t>:::i.f> (J&l3 q-1 -3 sui3 Jrn T3 FRCM .I iirz 1 ?j ~ 1.3 bL1 T:' IP !REFOI?T TC 5YC?CZCiC~ :EWllIFl;j",tsSS L' I"JIsIc:;. .:;xli3;. iCAN !fA(=;-fL,yg-j L' sc,, E. $.iCLX:i?, -iIJ,x:q()Is. ON hL4X 24 - 25 ) 1.9tic ;i. A. Quiglel;, A.3, 3, M. ChenauEt gpxrIvB OF TP.~ The purpose of t3is trip was tc observe a proposed method for the dchy- dratim of green salt md to determine that all health and safety measures were being xrried out, SurveiU.ance of this nature provided protection against excessi3z personnel exposure, insured compliance with ICC shipping regulaticns, tion of the equ'~ and determined when adequate decontamira-


Mechanisms underlying cellular responses of cells from haemopoeitic tissue to low dose-low LET radiation  

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

underlying cellular responses of cells from haemopoeitic underlying cellular responses of cells from haemopoeitic tissue to low dose-low LET radiation Munira Kadhim 1 , Sarah Irons 1 , Deborah Bowler 1 , Virginia Serra 1 , Stefania Militi 2 , Kim Chapman 1 1 Genomic Instability Research Group, School of Life Sciences, Oxford Brookes University, Gipsy Lane, Headington, Oxford, Oxfordshire, OX3 0BP, UK 2 Mammalian Genetics Unit, Medical Research Council Harwell, Harwell Science and Innovation Campus, Oxfordshire, OX11 0RD, UK Radiation-induced responses at the cellular and whole body levels are influenced by genetic predisposition, with implications for environmental and potentially, diagnostic exposures. Currently, the extent to which genetic background play a role in the mechanisms and signalling pathways involved in radiation-induced


Chemical Label Information  

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

Chemical Label Information Chemical Label Information Chemical Name CAS No. NFPA 704 Label Data Hazard Information Health Fire Reactivity Other acetone 67641 1 3 0 Eye, skin and mucous membrane irritatiion. Central nervous system depression. chloroform 67663 2 0 0 CAR [1] and TERAT [2] Liver and kidney disorders. Eye and skin irritation. Central nervous system depression. Cardiac arrythmia. ethanol 64175 0 3 0 Skin and eye irritation. ethyl alcohol 64175 0 3 0 Skin and eye irritation. hydrofluoric acid 7664393 4 0 0 Acute [3] - Skin contact can lead to bone damage. Skin, eye and mucous membrane irritation. hydrogen peroxide (35 to 52%) 7722841 2 0 1 OX Very irritating to the skin, eye and respiratory tract. hydrogen peroxide (> 52%) 7722841 2 0 3 OX Extremely irritating to the skin, eye and respiratory tract.



SciTech Connect

Semidwarfism has been used extensively in row crops and horticulture to promote yield, reduce lodging, and improve harvest index, and it might have similar benefits for trees for short-rotation forestry or energy plantations, reclamation, phytoremediation, or other applications. We studied the effects of the dominant semidwarfism transgenes GA Insensitive (GAI) and Repressor of GAI-Like, which affect gibberellin (GA) action, and the GA catabolic gene, GA 2-oxidase, in nursery beds and in 2-year-old high-density stands of hybrid poplar (Populus tremula ? Populus alba). Twenty-nine traits were analyzed, including measures of growth, morphology, and physiology. Endogenous GA levels were modified in most transgenic events; GA(20) and GA(8), in particular, had strong inverse associations with tree height. Nearly all measured traits varied significantly among genotypes, and several traits interacted with planting density, including aboveground biomass, root-shoot ratio, root fraction, branch angle, and crown depth. Semidwarfism promoted biomass allocation to roots over shoots and substantially increased rooting efficiency with most genes tested. The increased root proportion and increased leaf chlorophyll levels were associated with changes in leaf carbon isotope discrimination, indicating altered water use efficiency. Semidwarf trees had dramatically reduced growth when in direct competition with wild-type trees, supporting the hypothesis that semidwarfism genes could be effective tools to mitigate the spread of exotic, hybrid, and transgenic plants in wild and feral populations. We modified gibberellin (GA) metabolism and signaling in transgenic poplars using dominant transgenes and studied their effects for 3 years under field conditions. The transgenes that we employed either reduced the bioactive GAs, or attenuated their signaling. The majority of transgenic trees had significant and in many cases dramatic changes in height, crown architecture, foliage morphology, flowering onset, floral structure, and vegetative phenology. Most transgenes elicited various levels of height reduction consistent with the roles of GA in elongation growth. Several other growth traits were proportionally reduced, including branch length, internode distance, and leaf length. In contrast to elongation growth, stem diameter growth was much less affected, suggesting that semi-dwarf trees in dense stands might provide high levels of biomass production and carbon sequestration. The severity of phenotypic effects was strongly correlated with transgene expression among independent transgenic events, but often in a non-linear manner, the form of which varied widely among constructs. The majority of semi-dwarfed, transgenic plants showed delayed bud flush and early bud set, and expression of a native GAI transgene accelerated first time flowering in the field. All of the phenotypic changes observed in multiple years were stable over the 3 years of field study. Our results suggest that transgenic modification of GA action may be useful for producing semi-dwarf trees with modified growth and morphology for horticulture and other uses. We studied the poplar C(19) gibberellin 2-oxidase (GA2ox) gene subfamily. We show that a set of paralogous gene pairs differentially regulate shoot and root development. ? PtGA2ox4 and its paralogous gene PtGA2ox5 are primarily expressed in aerial organs, and overexpression of PtGA2ox5 produced a strong dwarfing phenotype characteristic of GA deficiency. Suppression of PtGA2ox4 and PtGA2ox5 led to increased biomass growth, but had no effect on root development. By contrast, the PtGA2ox2 and PtGA2ox7 paralogous pair was predominantly expressed in roots, and when these two genes were RNAi-suppressed it led to a decrease of root biomass. ? The morphological changes in the transgenic plants were underpinned by tissue-specific increases in bioactive GAs that corresponded to the predominant native expression of the targeted paralogous gene pair. Although RNAi suppression of both paralogous pairs led to changes in wood developmen

Busov, Victor



Plasma Surface Modification of Polymer Backsheets: Origins of Future Interfacial Barrier/Backsheet Failure  

DOE Green Energy (OSTI)

Flexible polymer substrates coated with inorganic oxide moisture barriers are a potential replacement for glass backsheets in thin film PV modules. Silicon oxynitride (SiOxNy) deposited by PECVD on polyethylene terephthalate (PET) represents one potential new backsheet candidate. Barrier deposition runs at NREL have typically included a nitrogen-rich plasma pretreatment prior to actual barrier deposition with the intention of cleaning the PET surface as well as enhancing adhesion of the SiOxNy barrier film to PET; however, test coupons of PET/barrier/EVA/TPE failed after damp heat exposure. PET substrates exposed to plasma conditions similar to those used in pre-treatment were examined by X-ray photoelectron spectroscopy (XPS) to reveal new low molecular weight PET fragments are created which are volatile upon heating and water soluble. Failure analysis of the coupons determined that the moisture barrier is, in fact, transferred to the encapsulant side.

Pankow, J. W.; Glick, S. H.



Columnar grain growth of FePt(L1{sub 0}) thin films  

SciTech Connect

An experimental approach for obtaining perpendicular FePt-SiOx thin films with a large height to diameter ratio FePt(L1{sub 0}) columnar grains is presented in this work. The microstructure for FePt-SiOx composite thin films as a function of oxide volume fraction, substrate temperature, and film thickness is studied by plan view and cross section TEM. The relations between processing, microstructure, epitaxial texture, and magnetic properties are discussed. By tuning the thickness of the magnetic layer and the volume fraction of oxide in the film at a sputtering temperature of 410 deg. C, a 16 nm thick perpendicular FePt film with {approx}8 nm diameter of FePt grains was obtained. The height to diameter ratio of the FePt grains was as large as 2. Ordering at lower temperature can be achieved by introducing a Ag sacrificial layer.

Yang En; Ho Hoan [Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Laughlin, David E. [Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); ALCOA Professor of Physical Metallurgy, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Zhu Jiangang [Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); ABB Professor of Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States)



Final Technical Report  

Science Conference Proceedings (OSTI)

The overall goal of this project was to design, evaluate, and engineer a Vanadium Red-Ox Flow Battery's integration into an existing wind site and micro-grid environment to determine if it is possible to achieve a fifteen percent reduction of diesel fuel usage during periods of peak load and otherwise stabilize the grid in potential high wind penetration systems. The bulk of the work was done by modeling the existing hybrid wind-diesel system and the proposed system with added flow battery storage. The flow battery was changed from a Vanadium Red-Ox to a Zinc Bromine flow battery by a different manufacturer during the modeling process. Several complications arose, but modeling proved to be successful and is ongoing. The development of a modeling platform for flow battery energy storage is a key element in evaluating both economic benefits and dispatch strategies for high penetration in micro-grid wind-diesel systems.

Logan, Jesse, L; Witmer, Dennis, PhD



Alternative Fuels Data Center: Maps and Data  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Consumption and Efficiency Consumption and Efficiency All Categories Vehicles AFVs and HEVs Fuel Consumption and Efficiency Vehicle Market Driving Patterns Fuels & Infrastructure Fuel Trends Emissions Alternative Fueling Stations Idle Reduction Transportation Infrastructure Biofuels Production Laws & Incentives Regulated Fleets Federal Fleets State & Alt Fuel Providers Clean Cities Vehicles Petroleum Use Reduction Program OR Go Sort by: Category Most Recent Most Popular 13 results Generated_thumb20130810-31804-1ox6tpc Average Annual Fuel Use of Major Vehicle Categories Generated_thumb20130810-31804-1ox6tpc Comparison of fuel use, miles traveled, and fuel economy among vehicle types Last update April 2013 View Graph Graph Download Data Generated_thumb20130810-31804-ufdolp Average Annual Vehicle Miles Traveled of Major Vehicle Categories


Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

system-efficiency Go system-efficiency Go Generated_thumb20130810-31804-1ox6tpc Average Annual Fuel Use of Major Vehicle Categories Generated_thumb20130810-31804-1ox6tpc Comparison of fuel use, miles traveled, and fuel economy among vehicle types Last update April 2013 View Graph Graph Download Data Generated_thumb20130810-31804-1fnxsdr Average Per-Passenger Fuel Economy of Various Travel Modes Generated_thumb20130810-31804-1fnxsdr Comparison of per-passenger fuel economy for various modes of transportation. Last update April 2013 View Graph Graph Download Data Average Annual Fuel Use of Major Vehicle Categories Class 8 Truck Transit Bus Refuse Truck Para. Shuttle Taxi Delivery Truck School Bus Police Light Truck Light-Duty Vehicle Car Motorcycle Annual Fuel Use (GGE) 11500 10063 9876.738 2695 3392 1814 1896.33375 1423.474 853.56725 528.8785 459.4805 33


JOURNAL DE PHYSIQUE Colloque C8, Supplement au no 12, Tome 49, decembre 1988  

E-Print Network (OSTI)

at the onset temperature 0.54 K. Since then, many experimentshave been performed to deter- mine the exact be shifted uni- formly (e.g. towards the U-poor side if uranium ox- ides are present). The samples were in Ta-foil and together with a piece of uranium, that serves as a get- ter, it is put into a quartz tube

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "ox yg enates" 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.


Kheshbn No. 113- Spring 1989 - Journal  

E-Print Network (OSTI)

nn px .p37ax 7 px aaip'U7nxo ,anp'3"n po o"x n37337' px .>of>n *ivnn ,o>iio vs l^ pN^ov* n p>aNP iis paviiN p>bn vnu m n : mp>n v>aNp m ora>auN 7n ppnh .ni>m tv h



Kheshbn No. 126- Fall 1995 - Journal  

E-Print Network (OSTI)

pam p oiVa oyn ymn oran . (anp-oVyn p "ijpi nyoaiR pnyVR pKaaix nyayayaaR nyn i^rVK rm anp-oVyn ]O I pa p yay im f^p o'a ]yma 0KJ7 oaK yt^Vns n .anp ps o"x nyi nyam >nnyi 7m



Effective hole-injection layer for non-doped inverted top-emitting organic light-emitting devices  

Science Conference Proceedings (OSTI)

Non-doped inverted top-emitting organic light-emitting diode with high efficiency is demonstrated through employing an effective hole-injection layer composed of MoO"x. One reason for high efficiency lies on the energy-level matching between MoO"x and ... Keywords: 78.60.Fi, 82.45.Mp, 85.60.Jb, Hole-injection, ITEOLEDs, MoOx

Yanlong Meng; Wenfa Xie; Ning Zhang; Shufen Chen; Jiang Li; Wei Hu; Yi Zhao; Jingying Hou; Shiyong Liu



Fundamental Studies of Tl-Ba-Ca-Cu-O Single Crystals and New High-Temperature Superconducting Compounds  

Science Conference Proceedings (OSTI)

Experimental studies in creating new compounds may lead to a better understanding of high-temperature superconductors. Flux creep activation energies (minimum energies that cause magnetic flux motion) were designed in one new compound, single crystals of laboratory-grown Tl2Ba2CaCu2Ox, using an ac-susceptibility technique. Investigations also measured crystal resistivity and used a new processing technique to form high-quality Tl-based thin films.



Der Neyder (The Vow )  

E-Print Network (OSTI)

ox'ibya iyat Diya oa^oKB 1934 n^' pK .oio*oorK pK pn ixoVywyaonK owa pn8B-p8i 8 oio^ooa^K p s pyo8' ? 2''2 h piw mmiR yw>v> -^00^108? tnta oio^ooa^K dix 0T8 ? po 08ii /ipyo8

Shklyar Shklar, Moyshe Moshe



Kheshbn No. 112- Fall 1988 - Journall  

E-Print Network (OSTI)

px ya3 x ]x n OIK 037T o*x oio ps? V p3xi pi .itan px rrnD^X a pva }xp *px nnDttro H ,OO ivi ps ivoi3 ovn px IT' H3 px p*0*11 pS 0X1 *pQ OIO t7D73W N 013 l>nNS N 7>t UVt .



Thermodynamics of the Complexation of Uranium(VI) by oxalate in aqueous solution at 10-70oC  

SciTech Connect

The protonation reactions of oxalate (ox) and the complex formation of uranium(VI) with oxalate in 1.05 mol kg{sup -1} NaClO{sub 4} were studied at variable temperatures (10-70 C). Three U(VI)/ox complexes (UO{sub 2}ox{sub j}{sup (2-2j){sup +}} with j = 1, 2, 3) were identified in this temperature range. The formation constants and the molar enthalpies of complexation were determined by spectrophotometry and calorimetry. The complexation of uranium(VI) with oxalate ion is exothermic at lower temperatures (10-40 C) and becomes endothermic at higher temperatures (55-70 C). In spite of this, the free energy of complexation becomes more negative at higher temperatures due to increasingly more positive entropy of complexation that exceeds the increase of the enthalpy of complexation. The thermodynamic parameters at different temperatures, in conjunction with the literature data for other dicarboxylic acids, provide insight into the relative strength of U(VI) complexes with a series of dicarboxylic acids (oxalic, malonic and oxydiacetic) and rationalization for the highest stability of U(VI)/oxalate complexes in the series. The data reported in this study are of importance in predicting the migration of uranium(VI) in geological environments in the case of failure of the engineering barriers which protect waste repositories.

Di Bernardo, Plinio; Zanonato, Pier Luigi; Tian, Guoxin; Tolazzi, Marilena; Rao, Linfeng



Omega-3 fatty acid oxidation products prevent vascular endothelial cell activation by coplanar polychlorinated biphenyls  

SciTech Connect

Coplanar polychlorinated biphenyls (PCBs) may facilitate development of atherosclerosis by stimulating pro-inflammatory pathways in the vascular endothelium. Nutrition, including fish oil-derived long-chain omega-3 fatty acids, such as docosahexaenoic acid (DHA, 22:6{omega}-3), can reduce inflammation and thus the risk of atherosclerosis. We tested the hypothesis that cyclopentenone metabolites produced by oxidation of DHA can protect against PCB-induced endothelial cell dysfunction. Oxidized DHA (oxDHA) was prepared by incubation of the fatty acid with the free radical generator 2,2-azo-bis(2-amidinopropane) dihydrochloride (AAPH). Cellular pretreatment with oxDHA prevented production of superoxide induced by PCB77, and subsequent activation of nuclear factor-{kappa}B (NF-{kappa}B). A{sub 4}/J{sub 4}-neuroprostanes (NPs) were identified and quantitated using HPLC ESI tandem mass spectrometry. Levels of these NPs were markedly increased after DHA oxidation with AAPH. The protective actions of oxDHA were reversed by treatment with sodium borohydride (NaBH{sub 4}), which concurrently abrogated A{sub 4}/J{sub 4}-NP formation. Up-regulation of monocyte chemoattractant protein-1 (MCP-1) by PCB77 was markedly reduced by oxDHA, but not by un-oxidized DHA. These protective effects were proportional to the abundance of A{sub 4}/J{sub 4} NPs in the oxidized DHA sample. Treatment of cells with oxidized eicosapentaenoic acid (EPA, 20:5{omega}-3) also reduced MCP-1 expression, but less than oxDHA. Treatment with DHA-derived cyclopentenones also increased DNA binding of NF-E2-related factor-2 (Nrf2) and downstream expression of NAD(P)H:quinone oxidoreductase (NQO1), similarly to the Nrf-2 activator sulforaphane. Furthermore, sulforaphane prevented PCB77-induced MCP-1 expression, suggesting that activation of Nrf-2 mediates the observed protection against PCB77 toxicity. Our data implicate A{sub 4}/J{sub 4}-NPs as mediators of omega-3 fatty acid-mediated protection against the endothelial toxicity of coplanar PCBs.

Majkova, Zuzana [Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536-0200 (United States); Layne, Joseph [Graduate Center for Nutritional Sciences, University of Kentucky, Lexington, KY 40536-0200 (United States); Sunkara, Manjula; Morris, Andrew J. [Division of Cardiovascular Medicine, The Gill Heart Institute, University of Kentucky, Lexington, KY 40536-0509 (United States); Toborek, Michal [Department of Neurosurgery, University of Kentucky, Lexington, KY 40536-0200 (United States); Hennig, Bernhard, E-mail: bhennig@email.uky.edu [Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536-0200 (United States); Graduate Center for Nutritional Sciences, University of Kentucky, Lexington, KY 40536-0200 (United States); Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40536-0200 (United States)




DOE Green Energy (OSTI)

The possible effects of a hydrogen atmosphere in reducing film deposition were studied in the large circulating loop and in rocking cell and pyrolytic capsule tests. At H/sub 2/ pressures of 200 to 400 psig no reduction in film weight deposited was observed in the loop tests, and in the pyrolytic tests film deposits were doubled. Heat conductivity of the films was much higher however. ln these high ash films the inorganic constituent was found to be alpha -Fe rather than the usual magnetite, which seems to account for the heat conductivity. Separation of benzene-insoluble material from high boiler and coolant was accomplished by centrifugation and by deposition on glass. The material was closely related to film formation. The nature of the inorganic and organic constituents of this material was examined in several analytical studies. Advances in the techniques of nuclear magnetic resonance, O/sub 2/ analysis, measurement of chromatograms, application of computers, and other methods were made. It was demonstrated by use of Fe5/sup 59/ that irradiated terphenyl under air attacks Fe rapidly and possibly the Fe is in solution as a chelate or other complex. It also was indicated by some tests that such a soluble form of Fe can figure in the formation of film and of the iron percarbide observed. The program of synthesis of pure samples of polyphenyls neared completion, and the attention was shifted to synthesis of new candidate coolants. Fused-ring structures, partially hydrog-enated, such as dihydrophenanthrene were made and proved of interest. Similar studies from the stabilizer investigation indicate the same thing. Other groups in which synthetic activity was initiated are the substituted triazines, pyridines, and other heterocyclic nonbenzenoid types. The industrial coolant candidates from petroleum and coal tar were found to be lacking in thermal stability above 700 deg F. Only the hydrodealkylated decant oil appeared to have promise for future development. The study of hydrocracking high boiler neared completion. Very good results were obtained using unfractionated coolants. and with the most recent high boiler produced at OMRE. An economic survey of processing high boiler to reclaim coolant is nearing completion. Close technical liaison continued throughout the quarter with AEC- IDO and Fluor Corp on the Title ll design of the Coolant Technology Loop (CTL) and the Fuel Technology Loop (FTL). Title I review of the loop handling equipment was completed. The scheduled completion date for the loops is currently being revised. However, procurement of material and equipment is progressing adequately to meet the required dates for field installation. Construction of the Component Development Test Loop (CDTL) was completed and operational shakedown of the loop started. Successful operation at 550 deg F was realized. lnitial operation and testing of a single-stage Chempump in the CDTL showed a high mass transfer of the hot (up to 550 deg F) pumped fluid from the pump discharge, through the rotor chamber, and back to the pump suction. The necessary parts were returned to the manufacturer for modification. lnitial testing of the ball valve has shown acceptable results. A report, IDO16675, containing complete details of the EOCR control rod latch reliability test was issued. A conceptual design of the FTL nuclear mockup was completed. This mockup will duplicate the nuclear characteristics of the in-pile tube containing a fuel-follower sample for the A-3 core loading. Detailed design of the approach-to-power samples is nearing completion. The eight driver elements being instrumented are D-4, D-6, D-9, D-10, D-11, D-12, D-16, and P-12. These elements were chosen on the basis of coolant flow, flux distribution, core symmetry, and rod programming. A successful run was made demonstrating displacement of Santowax OMP with ethylene glycol from a small model fuel element.




Transition metal complexes of oxazolinylboranes and cyclopentadienyl-bis(oxazolinyl)borates: Catalysts for asymmetric olefin hydroamination and acceptorless alcohol decarbonylation  

Science Conference Proceedings (OSTI)

The research presented and discussed in this dissertation involves the synthesis of transition metal complexes of oxazolinylboranes and cyclopentadienyl-bis(oxazolinyl)borates, and their application in catalytic enantioselective olefin hydroamination and acceptorless alcohol decarbonylation. Neutral oxazolinylboranes are excellent synthetic intermediates for preparing new borate ligands and also developing organometallic complexes. Achiral and optically active bis(oxazolinyl)phenylboranes are synthesized by reaction of 2-lithio-2-oxazolide and 0.50 equiv of dichlorophenylborane. These bis(oxazolinyl)phenylboranes are oligomeric species in solid state resulting from the coordination of an oxazoline to the boron center of another borane monomer. The treatment of chiral bis(oxazolinyl)phenylboranes with sodium cyclopentadienide provide optically active cyclopentadienyl-bis(oxazolinyl)borates H[PhB(C{sub 5}H{sub 5})(Ox{sup R}){sub 2}] [Ox{sup R} = Ox{sup 4S-iPr,Me2}, Ox{sup 4R-iPr,Me2}, Ox{sup 4S-tBu]}. These optically active proligands react with an equivalent of M(NMe{sub 2}){sub 4} (M = Ti, Zr, Hf) to afford corresponding cyclopentadienyl-bis(oxazolinyl)borato group 4 complexes {PhB(C{sub 5}H{sub 4})(Ox{sup R}){sub 2}}M(NMe{sub 2}){sub 2} in high yields. These group 4 compounds catalyze cyclization of aminoalkenes at room temperature or below, providing pyrrolidine, piperidine, and azepane with enantiomeric excesses up to 99%. Our mechanistic investigations suggest a non-insertive mechanism involving concerted C?N/C?H bond formation in the turnover limiting step of the catalytic cycle. Among cyclopentadienyl-bis(oxazolinyl)borato group 4 catalysts, the zirconium complex {PhB(C{sub 5}H{sub 4})(Ox{sup 4S-iPr,Me2}){sub 2}}Zr(NMe{sub 2}){sub 2} ({S-2}Zr(NMe{sub 2}){sub 2}) displays highest activity and enantioselectivity. Interestingly, {S-2}Zr(NMe{sub 2}){sub 2} also desymmetrizes olefin moieties of achiral non-conjugated aminodienes and aminodiynes during cyclization. The cyclization of aminodienes catalyzed by {S-2}Zr(NMe{sub 2}){sub 2} affords diastereomeric mixture of cis and trans cylic amines with high diasteromeric ratios and excellent enantiomeric excesses. Similarly, the desymmetrization of alkyne moieties in {S-2}Zr(NMe{sub 2}){sub 2}-catalyzed cyclization of aminodiynes provides corresponding cyclic imines bearing quaternary stereocenters with enantiomeric excesses up to 93%. These stereoselective desymmetrization reactions are significantly affected by concentration of the substrate, temperature, and the presence of a noncyclizable primary amine. In addition, both the diastereomeric ratios and enantiomeric excesses of the products are markedly enhanced by N-deuteration of the substrates. Notably, the cationic zirconium-monoamide complex [{S-2}Zr(NMe{sub 2})][B(C{sub 6}F{sub 5}){sub 4}] obtained from neutral {S-2}Zr(NMe{sub 2}){sub 2} cyclizes primary aminopentenes providing pyrrolidines with S-configuration; whereas {S-2}Zr(NMe{sub 2}){sub 2} provides R-configured pyrrolidines. The yttrium complex {S-2}YCH{sub 2}SiMe{sub 3} also affords S-configured pyrrolidines by cyclization of aminopentenes, however the enantiomeric excesses of products are low. An alternative optically active yttrium complex {PhB(C{sub 5}H{sub 4})(Ox{sup 4S-tBu}){sub 2}}YCH{sub 2}SiMe{sub 3} ({S-3}YCH{sub 2}SiMe{sub 3}) is synthesized, which displays highly enantioselective in the cyclization of aminoalkenes at room temperature affording S-configured cyclic amines with enantiomeric excesses up to 96%. A noninsertive mechanism involving a six-membered transition state by a concerted C?N bond formation and N?H bond cleavage is proposed for {S-3}YCH{sub 2}SiMe{sub 3} system based on the kinetic, spectroscopic, and stereochemical features. In the end, a series of bis- and tris(oxazolinyl)borato iridium and rhodium complexes are synthesized with bis(oxazolinyl)phenylborane [PhB(Ox{sup Me2}){sub 2}]{sub n}, tris(oxazolinyl)borane [B(Ox{sup Me2}){sub 3}]n, and tris(4,4-dimethyl-2-oxazolinyl)phenylborate [To{sup M}]{sup ?}. All these new an

Manna, Kuntal [Ames Laboratory



Gene expression profiling of mammary gland development reveals putative roles for death receptors and immune mediators in post-lactational regression  

E-Print Network (OSTI)

Pigr Ltf Sema4d Sema4b Igsf8 Sema7a Complement C1qa C2 H2-Bf C1qr C3ar1 C3 C1qbp C9 C4 C2 C2 C1qa C1qc Immune related Tnfsf4 (OX40L) E4bp4 Tgfb1 Casp1 Lig1 Irak1 Tnfaip2 Tnfsf6 (FasL) Inhbb Tgfb3 H2-Aa Traf6 Tnfsf7 (Cd70) Pafah1b2 Tnfrsf6 (Fas) Tnfrsf11...

Clarkson, Richard W E; Wayland, Matthew T; Lee, Jennifer; Freeman, Tom C; Watson, Christine J



Ultra high vacuum broad band high power microwave window  

DOE Patents (OSTI)

An improved high vacuum microwave window has been developed that utilizes high density polyethylene coated on two sides with SiOx, SiNx, or a combination of the two. The resultant low dielectric and low loss tangent window creates a low outgassing, low permeation seal through which broad band, high power microwave energy may be passed. No matching device is necessary and the sealing technique is simple. The features of the window are broad band transmission, ultra-high vacuum compatibility with a simple sealing technique, low voltage standing wave ratio, high power transmission and low cost.

Nguyen-Tuong, Viet (Seaford, VA); Dylla, III, Henry Frederick (Yorktown, VA)



Ultra high vacuum broad band high power microwave window  

DOE Patents (OSTI)

An improved high vacuum microwave window has been developed that utilizes high density polyethylene coated on two sides with SiOx, SiNx, or a combination of the two. The resultant low dielectric and low loss tangent window creates a low outgassing, low permeation seal through which broad band, high power microwave energy may be passed. No matching device is necessary and the sealing technique is simple. The features of the window are broad band transmission, ultra-high vacuum compatibility with a simple sealing technique, low voltage standing wave ratio, high power transmission and low cost. 5 figs.

Nguyen-Tuong, V.; Dylla, H.F. III



Policy Compromises: Corruption and Regulation in a Dynamic Democracy  

E-Print Network (OSTI)

hqgrjhqrxv yduldeohv/ dqg zh pxvw orrn wr rwkhu idfwruv vxfk dv surgxfwlylw| jurzwk wr xqghuvwdqg zk| wkh| gl#30;hu dfurvv vrflhwlhv1 D fuxfldo lpsolfdwlrq ri rxu prgho lv wkdw +surgxfwlylw|, jurzwk fdq uhgxfh fruuxswlrq/ e| uhgxflqj wkh frvw ri frqwuroolqj... surylghv d uhdvrqdeoh wkhru| ri zk| srolwlfv lv ohvv fruuxsw lq Ox{hpexuj wkdq lq Lqgld dqg zk| fruuxswlrq pljkw eh uhodwlyho| orz lq vrflhwlhv zlwk ghfhqwudol}hg jry0 huqphqw vwuxfwxuhv/ exw fdq kdugo| khos xv xqghuvwdqg zk| Ghqpdun lv ohvv fruuxsw wkdq...

Aidt, Toke S



Collapse of masonry structures  

E-Print Network (OSTI)

causing failure of the buttress Hifi = horizontal force causing failure of a buttress leaning by an angle rjJ Hsifi = horizontal force to overturn a solid buttress leaning by an angle rjJ Hificr = horizontal force to initiate the fracture in a leaning... angle of embrace of a circular arch all/OX = maximum possible half angle of embrace for a given thickness ratio before a circular arch will collapse at the minimum thickness limit fJ = angle of intrados hinges in a circular masonry arch measured from...

Ochsendorf, John Allen



Silicon Oxynitride Thin Film Barriers for PV Packaging (Poster)  

DOE Green Energy (OSTI)

Dielectric, adhesion-promoting, moisture barriers comprised of silicon oxynitride thin film materials (SiOxNy with various material stoichiometric compositions x,y) were applied to: 1) bare and pre-coated soda-lime silicate glass (coated with transparent conductive oxide SnO2:F and/or aluminum), and polymer substrates (polyethylene terephthalate, PET, or polyethylene napthalate, PEN); plus 2) pre- deposited photovoltaic (PV) cells and mini-modules consisting of amorphous silicon (a-Si) and copper indium gallium diselenide (CIGS) thin-film PV technologies. We used plasma enhanced chemical vapor deposition (PECVD) process with dilute silane, nitrogen, and nitrous oxide/oxygen gas mixtures in a low-power (< or = 10 milliW per cm2) RF discharge at ~ 0.2 Torr pressure, and low substrate temperatures < or = 100(degrees)C, over deposition areas ~ 1000 cm2. Barrier properties of the resulting PV cells and coated-glass packaging structures were studied with subsequent stressing in damp-heat exposure at 85(degrees)C/85% RH. Preliminary results on PV cells and coated glass indicate the palpable benefits of the barriers in mitigating moisture intrusion and degradation of the underlying structures using SiOxNy coatings with thicknesses in the range of 100-200 nm.

del Cueto, J. A.; Glick, S. H.; Terwilliger, K. M.; Jorgensen, G. J.; Pankow, J. W.; Keyes, B. M.; Gedvilas, L. M.; Pern, F. J.



An In-Situ XAS Study of the Structural Changes in a CuO-CeO2/Al2O3 Catalyst during Total Oxidation of Propane  

Science Conference Proceedings (OSTI)

A CuOx-CeOx/Al2O3 catalyst was studied with in-situ transmission Cu K XAS for the total oxidation of propane as model reaction for the catalytic elimination of volatile organic compounds. The local Cu structure was determined for the catalyst as such, after pre-oxidation and after reduction with propane. The catalyst as such has a local CuO structure. No structural effect was observed upon heating in He up to 600 deg. C or after pre-oxidation at 150 deg. C. A full reduction of the Cu2+ towards metallic Cu0 occurred, when propane was fed to the catalyst. The change in local Cu structure during propane reduction was followed with a time resolution of 1 min. The {chi}(k) scans appeared as linear combinations of start and end spectra, CuO and Cu structure, respectively. However, careful examination of the XANES edge spectra indicates the presence of a small amount of additional Cu1+ species.

Silversmith, Geert; Poelman, Hilde; Poelman, Dirk; Gryse, Roger de [Ghent University, Department of Solid State Sciences, Krijgslaan 281 S1, B-9000 Gent (Belgium); Olea, Maria; Balcaen, Veerle; Heynderickx, Philippe; Marin, Guy B. [Ghent University, Laboratorium voor Petrochemische Techniek, Krijgslaan 281 S5, B-9000 Gent (Belgium)



Cómo funcionan las Células de Combustible  

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

Cómo funcionan las Células de Combustible Cómo funcionan las Células de Combustible Diagrama: Como funciona un MPE de combustible de célula. 1. El combustible de hidrógeno es canalizado a través de un campo de placas de flujo para el ánodo al otro lado de la pila de combustible, mientras que el oxígeno del aire se canaliza hacia el cátodo del otro lado de la celda. 2. En el ánodo, un catalizador de platino hace que el hidrógeno se divida en iones positivos de hidrógeno (protones) y electrones de carga negativa. 3. La Membrana de Electrolito Polimérico (MPE) sólo permite que los iones de carga positiva pasen a través de ella hacia el cátodo. Los electrones de carga negativa deben viajar a lo largo de un circuito externo hacia el cátodo, creando una corriente eléctrica. 4. En el cátodo, los electrones y los iones positivos de hidrógeno se combinan con el oxígeno para formar agua, que fluye fuera de la célula.


Waste-form development for conversion to portland cement at Los Alamos National Laboratory (LANL) Technical Area 55 (TA-55)  

Science Conference Proceedings (OSTI)

The process used at TA-55 to cement transuranic (TRU) waste has experienced several problems with the gypsum-based cement currently being used. Specifically, the waste form could not reliably pass the Waste Isolation Pilot Plant (WIPP) prohibition for free liquid and the Environmental Protection Agency (EPA)-Toxicity Characteristic Leaching Procedure (TCLP) standard for chromium. This report describes the project to develop a portland cement-based waste form that ensures compliance to these standards, as well as other performance standards consisting of homogeneous mixing, moderate hydration temperature, timely initial set, and structural durability. Testing was conducted using the two most common waste streams requiring cementation as of February 1994, lean residue (LR)- and oxalate filtrate (OX)-based evaporator bottoms (EV). A formulation with a pH of 10.3 to 12.1 and a minimum cement-to-liquid (C/L) ratio of 0.80 kg/l for OX-based EV and 0.94 kg/L for LR-based EV was found to pass the performance standards chosen for this project. The implementation of the portland process should result in a yearly cost savings for raw materials of approximately $27,000 over the gypsum process.

Veazey, G.W.; Schake, A.R.; Shalek, P.D.; Romero, D.A.; Smith, C.A.




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

¨ ©    "!$#&%('£¢)10 2 %435©687 @9BADCE9GF HI!$PQ 7 HR9BHR¢¥¢)S¢T C5UV¡£¢)@9 ADCW9 X©Y CWF F U$!`%4ba ¢c%¥F Hd  e5a#f "F g CihY"¢ prqtsvuxwyq€ƒ‚…„‡†‰ˆv’‘”“–•˜—d™ew’fdgcˆ˜shi„kj’lcwDfkm)—8nBˆv‘o’qpdDq–rbs5’q‡•t— u wys nBg(stsv“yg • —kjw€hxDˆvytwyq m —dzi{ygcˆtgcy˜s|}q~“ m — †u~ˆv‘”ye€}‘”q~“y(—~‚Gqxqƒg( „ gcfxˆvqkDˆ˜€…~—d†D‡’‡tˆ ‰‹ŠŒŽ‘“’”•Œ—–D˜š™›”vŽœ™‹Ÿž›’—– ¡Ž£¢8’—¤£¥t¦t™‹§“¨~©ª™›¤‹™oŒ”¨«¦-¬¥®¡’—¯˜–±°²™›«¬–˜’³

Note: This page contains sample records for the topic "ox yg enates" 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.


NETL: Contact  

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

NETL NETL Contact NETL Addresses for the National Energy Technology Laboratories: U.S. Department of Energy National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236-0940 (Street Address: 626 Cochrans Mill Road, Jefferson Hills, PA) GPS Coordinates: Administration Gate: 40.301226,-79.977729 R&D Gate: 40.305089,-79.975006 U.S. Department of Energy National Energy Technology Laboratory 3610 Collins Ferry Road P.O. B ox 880 Morgantown, WV 26507-0880 GPS Coordinates: 39.67234,-79.977347 U.S. Department of Energy National Energy Technology Laboratory 13131 Dairy Ashford Road, Suite 225 Sugar Land, TX 77478-4396 GPS Coordinates: 29.625885,-95.602004 U.S. Department of Energy National Energy Technology Laboratory Arctic Energy Office



Gasoline and Diesel Fuel Update (EIA)

Note: Note: The conversion factor for asphalt is 5.5 barrels per short ton. ASTM: American Society for Testing and Materials Aviation Gasoline (Finished): A complex mixture of relatively volatile hydrocarbons with or without small quantities of additives, blended to form a fuel suitable for use in aviation reciprocating engines. Fuel specifi- cations are provided in ASTM Specification D 910 and Military Specifica- tion MIL-G-5572. Note: Data on blending components are not counted in data on finished aviation gasoline. Aviation Gasoline Blending Components: Naphthas that will be used for blending or compounding into finished aviation gasoline (e.g., straight run gasoline, alkylate, reformate, benzene, toluene, and xylene). Excludes ox- ygenates (alcohols, ethers), butane, and pentanes plus. Oxygenates are re- ported as other hydrocarbons, hydrogen, and oxygenates. Barrel


Fermilab Today  

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

0, 2010 0, 2010 Subscribe | Contact Us | Archive | Classifieds | Guidelines | Help Search GO Calendar Have a safe day! Monday, May 10 2:30 p.m. Particle Astrophysics Seminar - Curia II Speaker: Cristiano Galbiati, Princeton University Title: E-1000: DarkSide - Search for Dark Matter with Depleted Argon 3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over 4 p.m. All Experimenters' Meeting - Curia II Special Topics: New Collaring and Coil Pre-Stress Limit for a Nb3Sn Magnet; Developments at the Fermilab Test Beam Facility Tuesday, May 11 3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over 4 p.m. Accelerator Physics and Technology Seminar - One West Speaker: Tengming Shen, Florida State University Title: Understanding the Melt Processing of Multifilamentary Ag-Bi2Sr2CaCu2Ox Round Wire for High Field Magnet Applications


Property:Zip | Open Energy Information  

Open Energy Info (EERE)

This is a property of type String. This is a property of type String. Pages using the property "Zip" Showing 25 pages using this property. (previous 25) (next 25) 1 10Charge Inc + 75001 + 12 Voltz Limited + LA8 9NH + 1366 Technologies + 02421 + 1Soltech Inc + 75081 + 1st Light Energy, Inc. + 953650 + 1st Mile + 2800 + 2 21 Century Solar Inc + 75042 + 21-Century Silicon, Inc. + 75081-1881 + 21st century Green Solutions LLC + 48439 + 25 x 25 America s Energy Future + 21093 + 2OC + BA1 7AB + 2degrees + OX2 7HT + 2e Carbon Access + 10280 + 3 3 Phases Energy Services LLC + CA 94129 + 3C Holding AG + 61118 + 3Degrees + 94111 + 3G Energi + TD5 7BH + 3GSolar + 97774 + 3M + 55144-1000 + 3P Energy GmbH + 19061 + 3S Industries AG Formerly 3S Swiss Solar Systems AG + CH-3006 + 3TIER + 98121 +


All Complete Intersection Calabi-Yau Four-Folds  

E-Print Network (OSTI)

We present an exhaustive, constructive, classification of the Calabi-Yau four-folds which can be described as complete intersections in products of projective spaces. A comprehensive list of 921,497 configuration matrices which represent all topologically distinct types of complete intersection Calabi-Yau four-folds is provided and can be downloaded at http://www-thphys.physics.ox.ac.uk/projects/CalabiYau/Cicy4folds/index.html . The manifolds have non-negative Euler characteristics in the range 0 - 2610. This data set will be of use in a wide range of physical and mathematical applications. Nearly all of these four-folds are elliptically fibered and are thus of interest for F-theory model building.

James Gray; Alexander S. Haupt; Andre Lukas



2degrees | Open Energy Information  

Open Energy Info (EERE)

degrees degrees Jump to: navigation, search Name 2degrees Place Oxford, England, United Kingdom Zip OX2 7HT Product Oxford-based collaborative network provider for sustainability professionals. Coordinates 43.781517°, -89.571699° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.781517,"lon":-89.571699,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}


TO I  

Office of Legacy Management (LM)

. PBOM t SUBJBCT: D. Sturges, Chief, Operations Division, Banford Operations Offloe, Bichland, Washington B. J. Smith, Chief, Operations Branoh, Production Divisioh, Eew York operations offlce mmm ~mucmoB LETTER . I. - IACBY TO BEICBABDDAlED OX~ES 15, 1950 SYMBOL1 P01llJS:hb . sTiTEs GOVERNMENT ICT. I ) DATE: Hov~bsr 0,19So ~TEBTIOB:'-.B.E.L. Stanford [Ae appreciate very much having,moeived the subjeqt lettei beoause of its signifioa@ bearing on our am-rent fabrioation de$eloInr+s. The follouing.adtions are contemplated for refinements 1 ,/ in our rolling ay Authority of . .._.._.. .-t*-*----s' s- praotioe and for finishing operations with a view to&&l eliminating mts.lo3.k~ .I I We will continue to wrlablds.of billet: p.reheating temperature, pase


Bio Energy Investments BEI | Open Energy Information  

Open Energy Info (EERE)

Investments BEI Investments BEI Jump to: navigation, search Name Bio Energy Investments (BEI) Place Chinnor, United Kingdom Zip OX39 4TW Sector Biomass Product UK-based company involved in the design and building of biomass plants. Coordinates 51.702702°, -0.910879° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.702702,"lon":-0.910879,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}


Non-targeted effects of ionising radiation (NOTE) … a new European Integrated project, 2006-2010  

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

targeted effects of ionising radiation (NOTE) - targeted effects of ionising radiation (NOTE) - a new European Integrated project, 2006-2010 Sisko Salomaa 1 , Eric G. Wright 2 , Guido Hildebrandt 3 , Munira Kadhim 4 , Mark P. Little 5 , Kevin M. Prise 6 , and Oleg V. Belyakov 1 1 Research and Environmental Surveillance, STUK - Radiation and Nuclear Safety Authority, Helsinki FI-00881, Finland 2 University of Dundee, Division of Pathology and Neuroscience, Molecular and Cellular Pathology Laboratories, Ninewells Hospital and Medical School, Dundee DD1 9SY, Scotland, UK 3 Department of Radiotherapy and Radiooncology, University of Leipzig, Leipzig 04103, Germany 4 MRC Radiation and Genome Stability Unit, Harwell, Didcot, Oxfordshire OX11 ORD, UK 5 Department of Epidemiology and Public Health, Imperial College Faculty of Medicine,


High Performance Sustainable Building Design RM  

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

High Performance Sustainable High Performance Sustainable Building Design Review Module March 2010 CD-0 O High 0 This Re Les OFFICE OF h Perform CD-1 eview Module ssons learned f F ENVIRON Standard R mance Su Revi Critical D CD-2 M has been pilot from the pilot h NMENTAL Review Plan ustainabl iew Module Decision (CD C March 2010 ted at the SRS have been incor L MANAGE n (SRP) le Buildin e D) Applicabili D-3 SWPF and MO rporated in Rev EMENT ng Design ity CD-4 OX FFF projec view Module n Post Ope cts. eration Standard Review Plan, 2 nd Edition, March 2010 i FOREWORD The Standard Review Plan (SRP) 1 provides a consistent, predictable corporate review framework to ensure that issues and risks that could challenge the success of Office of Environmental Management (EM) projects are identified early and addressed proactively. The


Distribution Category UC-38 UCRL-52863-Rev.l  

Office of Scientific and Technical Information (OSTI)

52863 Rev. 1 52863 Rev. 1 Distribution Category UC-38 UCRL-52863-Rev.l DE87 012387 Conduction Heat Transfer Solutions James H. VanSant Manuscript date: August 1983 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees.^ makes, any warranty, express ox impUed,


FRm : John A. Deny, DitiSion Of  

Office of Legacy Management (LM)

to : lieads of Divisions am3 Man DAW.: December 6, 1954 to : lieads of Divisions am3 Man DAW.: December 6, 1954 FRm : John A. Deny, DitiSion Of SPNBOL : csm-R:AcB The attached tabulation of active AEC contracts over $l,ooO,Mx) haa been ,xepared as a result of recurring requests fcr infmmatirm cm ow larger contracts. It consists ox- Pa-t I - E+ime contracts and Pert II - Sub- ccdxacts, and lists the contracts alphabetically bq Operations Office to shar; (1) tne of work being prformed by the contractcr; (2) contract rmter; (3).ac&ated dollar obligation; (4) tspe of contract, i.e., cost m or fixed ,rlce; ad, (5) the est+ted completion date. 1. Arcbitict-Engineer (AE) 2. DnSita constnlctfon 3. Research and Dewlopnent (R&D) 4. Haterids, Supplies and EquiFment for Constructian (=---.) 5. Materials, supplies and Equippent, other @e&other)


Microsoft Word - Blurbs for Nik.doc  

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

NFPA Chemical Labeling System NFPA Chemical Labeling System The NFPA diamond is a coded symbol which combines both color and numerical rating (0-4) to indicate the degree of hazard associated with the substance. Blue = Health Red = Flammability Yellow = Reactivity White = Other Flammability (flash points) Health 0 = Will not burn 0 = Normal Material 1 = above 200 degrees Fahrenheit 1 = Slight Hazard 2 = Between 100-200 degrees Fahrenheit 2 = Moderately Hazardous 3 = Below 100 degrees Fahrenheit 3 = Extremely Hazardous 4 = Flash point below 73 degrees Fahrenheit 4 = Deadly Reactivity Specific Hazard 0 = Stable ACID-acid 1 = Unstable if heated ALK-alkali 2 = Violent chemical change COR-corrosive 3 = Shock or heat may detonate OX-oxidizer


eCopy, Inc.  

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

nonexclusive .. royalty~free license to publish nonexclusive .. royalty~free license to publish or reproduce the published form of this contribution, or aJfow others to do so, for U. S. Government purposes. Report on Quadrupole and Dipole Sorting for the APS Booster Synchrotron Rabinder Kumar Koul APS, Argonne National Laboratory Argonne, lL 60439 ABSTRACT This is a report of the implementation of dipole and quadrupole magnet sorting carried out for the injector synchrotron. The method used for implementing the sorting was developed by the author, see Koul l or Koul 2 . The arrangement of the dipoles around the injector synchrotron, after sorting, reduced the ox/.J73 by a factor of six. Whereas the arrangement of the quadrupoles around the injector synchrotron, after sorting, re-


Horns and Antlers  

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

Horns and Antlers Horns and Antlers Nature Bulletin No. 730 November 2, 1963 Forest Preserve District of Cook County Seymour Simon, President David H. Thompson, Senior Naturalist HORNS AND ANTLERS A great many large grazing or browsing animals, the ones which have cloven hoofs and chew their cud, are armed with either horns or antlers. These weapons are used for defense against the attacks of bloodthirsty enemies and in duels between males for possession of a female or a harem of females. Although both horns and antlers are borne on the head and have similar uses, they are very different structures. Most of the world's cattle, sheep and goats -- both wild and domesticated -- have horns. In North America the only living horn- bearers are those noble beasts, the bison (usually called buffalo), the musk ox, the Rocky Mountain goat and the bighorn sheep.


Key Accomplishments @ Catalysis: Reactivity and Structure Group | Chemistry  

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

Recent Key Accomplishments Recent Key Accomplishments WGS: Importance of the Metal-Oxide Interface in Catalysis: In Situ Studies of the Water-Gas Shift Reaction by Ambient-Pressure X-ray Photoelectron Spectroscopy A New Type of Strong Metal-Support Interaction and the Production of H-2 through the Transformation of Water on Pt/CeO2(111) and Pt/CeOx/TiO2(110) Catalysts In situ studies of CeO2-supported Pt, Ru, and Pt-Ru alloy catalysts for the water-gas shift reaction: Active phases and reaction intermediates In situ/operando studies for the production of hydrogen through the water-gas shift on metal oxide catalysts Mechanistic understanding of WGS catalysts from first principles: Au(111) Supported Oxide Nanoparticles Theoretical catalyst optimization of WGS catalysts: Cu(111) supported oxide nanostructures



Office of Legacy Management (LM)

I|ex~ I|ex~ ~ ILKE&y~~~ *ORNL/RASA-92/14 OAK RIDGE NATIONAL LABORATORY Results of the Radiological Survey at the former Alba Craft Laboratory Site *z riiiriri-lrirfZ Properties, Oxford, Ohio (OX001) M. E. Murray K. S. Brown R. A. Mathis MANAGED BY MARTIN MARIETTA ENERGY SYSTEMS, INC. FOR THE UNITED STATES DEPARTMENT OF ENERGY | ~~DEPARTMENT OF ENERGY This report has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Techni- cal Information, P.O. Box 62, Oak Ridge, TN 37831; prices available from (615) 576-8401, FTS 626-8401. Available to the public from the National Technical Information Service, U.S. Department of Commerce. 5285 Port Royal Rd., Springfield, VA 22161. This report was prepared as an account of work sponsored by an agency of



Office of Legacy Management (LM)

G G BAKELITE CORPORATION ,-----, K-- ,., ,".\ 1; / "_.~~, "N,i OF "N,ON CARBIDE AND CARBON tORPORATlON ' ./--z&.u; ?.C"CL ,' .. I: Em ; 00 US, . ..myq "LI 70s.. ,, ., .:, RIVER ROAD _ ., ' :, _ BOUND BROOK, N.J. , ip. 0. zox 710) S' hject: Zakelite Corp. G-7405 - eng. 283 ' .,,:.. ' ,. ., ,\ ___: I\, ".' i ! : ;1. v .\. December 15, 19>4A'. Major J. ; . Christenson bar Department i\letiat ;tan Sngineer District ??ew York Area - P. 0. P.ox 265 Church Street Amex Few York, Few York CLASSIFICATION CANCEUED -Of+- Dear Sir: I have just been advised by Sharples Chemicals, Inc. that they have on hand at t-heir Wyandotte plant approximately 44,009 pounds of Diamgl Naphthalene. Our inventory at this plant is only s,.fficient to keep us in operaticn until Tuesday, Decem-


Rwanda-Project to Develop a National Strategy on Climate Change and Low  

Open Energy Info (EERE)

Rwanda-Project to Develop a National Strategy on Climate Change and Low Rwanda-Project to Develop a National Strategy on Climate Change and Low Carbon Development Jump to: navigation, search Name SSEE-Project to Develop a Rwandan National Strategy on Climate Change and Low Carbon Development Agency/Company /Organization United Kingdom Department for International Development, United Nations Development Programme (UNDP) Partner Smith School for Enterprise and Environment, University of Oxford Sector Climate, Energy, Land Topics Implementation, Low emission development planning, Policies/deployment programs Website http://www.smithschool.ox.ac.u Program Start 2010 Country Rwanda UN Region Middle Africa References SSEE-Project to Develop a Rwandan National Strategy on Climate Change and Low Carbon Development[1] SSEE-Project to Develop a Rwandan National Strategy on Climate Change and Low Carbon Development Screenshot


Heterotic Model Building: 16 Special Manifolds  

E-Print Network (OSTI)

We study heterotic model building on 16 specific Calabi-Yau manifolds constructed as hypersurfaces in toric four-folds. These 16 manifolds are the only ones among the more than half a billion manifolds in the Kreuzer-Skarke list with a non-trivial first fundamental group. We classify the line bundle models on these manifolds, both for SU(5) and SO(10) GUTs, which lead to consistent supersymmetric string vacua and have three chiral families. A total of about 29000 models is found, most of them corresponding to SO(10) GUTs. These models constitute a starting point for detailed heterotic model building on Calabi-Yau manifolds in the Kreuzer-Skarke list. The data for these models can be downloaded here: http://www-thphys.physics.ox.ac.uk/projects/CalabiYau/toricdata/index.html

Yang-Hui He; Seung-Joo Lee; Andre Lukas; Chuang Sun


Note: This page contains sample records for the topic "ox yg enates" 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.


Development of Wind-and-React Bi-2212 Accelerator MagnetTechnology  

SciTech Connect

We report on the progress in our R&D program, targetedto develop the technology for the application of Bi2Sr2CaCu2Ox (Bi-2212)in accelerator magnets. The program uses subscale coils, wound frominsulated cables, to study suitable materials, heat treatmenthomogeneity, stability, and effects ofmagnetic field and thermal andelectro-magnetic loads. We have addressed material and reaction relatedissues and report onthe fabrication, heat treatment, and analysis ofsubscale Bi-2212 coils. Such coils can carry a current on the order of5000 A and generate, in various support structures, magnetic fields from2.6 to 9.9 T. Successful coils are therefore targeted towards a hybridNb3Sn-HTS magnet which will demonstrate the feasibility of Bi-2212 foraccelerator magnets, and open a new magnetic field realm, beyond what isachievable with Nb3Sn.

Godeke, A.; Cheng, D.; Dietderich, D.R.; English, C.D.; Felice,H.; Hannaford, C.R.; Prestemon, S.O.; Sabbi, G.; Scanlan, R.M.; Hikichi,Y.; Nishioka, J.; Hasegawa, T.



The Jefferson Lab Frozen Spin Target  

SciTech Connect

A frozen spin polarized target, constructed at Jefferson Lab for use inside a large acceptance spectrometer, is described. The target has been utilized for photoproduction measurements with polarized tagged photons of both longitudinal and circular polarization. Protons in TEMPO-doped butanol were dynamically polarized to approximately 90% outside the spectrometer at 5 T and 200-300 mK. Photoproduction data were acquired with the target inside the spectrometer at a frozen-spin temperature of approximately 30 mK with the polarization maintained by a thin, superconducting coil installed inside the target cryostat. A 0.56 T solenoid was used for longitudinal target polarization and a 0.50 T dipole for transverse polarization. Spin relaxation times as high as 4000 hours were observed. We also report polarization results for deuterated propanediol doped with the trityl radical OX063.

Christopher Keith, James Brock, Christopher Carlin, Sara Comer, David Kashy, Josephine McAndrew, David Meekins, Eugene Pasyuk, Joshua Pierce, Mikell Seely



Module Packaging Research and Reliability: Activities and Capabilities  

DOE Green Energy (OSTI)

Our team activities are directed at improving PV module reliability by incorporating new, more effective, and less expensive packaging materials and techniques. New and existing materials or designs are evaluated before and during accelerated environmental exposure for the following properties: (1) Adhesion and cohesion: peel strength and lap shear. (2) Electrical conductivity: surface, bulk, interface and transients. (3) Water vapor transmission: solubility and diffusivity. (4) Accelerated weathering: ultraviolet, temperature, and damp heat tests. (5) Module and cell failure diagnostics: infrared imaging, individual cell shunt characterization, coring. (6) Fabrication improvements: SiOxNy barrier coatings and enhanced wet adhesion. (7) Numerical modeling: Moisture ingress/egress, module and cell performance, and cell-to-frame leakage current. (8) Rheological properties of polymer encapsulant and sheeting materials. Specific examples are described.

McMahon, T. J.; delCueto, J.; Glick, S.; Jorgensen, G.; Kempe, M.; Pern, J.; Terwilliger, K.



Module Design, Materials, and Packaging Research Team: Activities and Capabilities  

DOE Green Energy (OSTI)

Our team activities are directed at improving PV module reliability by incorporating new, more effective, and less expensive packaging materials and techniques. New and existing materials or designs are evaluated before and during accelerated environmental exposure for the following properties: (1) Adhesion and cohesion: peel strength and lap shear. (2) Electrical conductivity: surface, bulk, interface and transients. (3) Water vapor transmission: solubility and diffusivity. (4) Accelerated weathering: ultraviolet, temperature, and damp heat tests. (5) Module and cell failure diagnostics: infrared imaging, individual cell shunt characterization, coring. (6) Fabrication improvements: SiOxNy barrier coatings and enhanced wet adhesion. (7) Numerical modeling: Moisture ingress/egress, module and cell performance, and cell-to-frame leakage current. (8) Rheological properties of polymer encapsulant and sheeting materials. Specific examples will be described.

McMahon, T. J.; del Cueto, J.; Glick, S.; Jorgensen, G.; Kempe, M.; Kennedy, C.; Pern, J.; Terwilliger, K



Thermally integrated staged methanol reformer and method  

DOE Green Energy (OSTI)

A thermally integrated two-stage methanol reformer including a heat exchanger and first and second reactors colocated in a common housing in which a gaseous heat transfer medium circulates to carry heat from the heat exchanger into the reactors. The heat transfer medium comprises principally hydrogen, carbon dioxide, methanol vapor and water vapor formed in a first stage reforming reaction. A small portion of the circulating heat transfer medium is drawn off and reacted in a second stage reforming reaction which substantially completes the reaction of the methanol and water remaining in the drawn-off portion. Preferably, a PrOx reactor will be included in the housing upstream of the heat exchanger to supplement the heat provided by the heat exchanger.

Skala, Glenn William (Churchville, NY); Hart-Predmore, David James (Rochester, NY); Pettit, William Henry (Rochester, NY); Borup, Rodney Lynn (East Rochester, NY)



Raman Studies of Nanocrystalline CdS:O Film  

DOE Green Energy (OSTI)

Oxygenated nanocrystalline CdS films show improved solar cell performance, but the physics and mechanism underlying this are not yet clearly understood. Raman study provides complementary information to the understanding obtained from other experimental investigations. A comprehensive analysis of the existing experimental data (including x-ray diffraction, transmission, transmission electron microscopy, and Raman) has led to the following conclusions: (1) The O-incorporation forms CdS1-xOx alloy nano-particles. (2) The observed evolution of the electronic structure is the result of the interplay between the alloy and quantum confinement effect. (3) The blue-shift of the LO phonon Raman peak is primarily due to the alloying effect. (4) Some oxygen atoms have taken the interstitial sites.

Zhang, Y.; Wu, X.; Dhere, R.; Zhou, J.; Yan, Y.; Mascarenhas, A.



Electrical controlled rheology of a suspension of weakly conducting particles in dielectric liquid  

E-Print Network (OSTI)

The properties of suspensions of fine particles in dielectric liquid (electrorheological fluids) subjected to an electric field lead to a drastic change of the apparent viscosity of the fluid. For high applied fields (~ 3-5 kV/mm) the suspension congeals to a solid gel (particles fibrillate span the electrode gap) having a finite yield stress. For moderate fields the viscosity of the suspension is continuously controlled by the electric field strength. We have roposed that in DC voltage the field distribution in the solid (particles) and liquid phases of the suspension and so the attractive induced forces between particles and the yield stress of the suspension are controlled by the conductivities of the both materials. In this paper we report investigation and results obtained with nanoelectrorheological suspensions: synthesis of coated nanoparticles (size ~ 50 to 600 nm, materials Gd2O3:Tb, SiOx...), preparation of ER fluids (nanoparticles mixed in silicone oil), electrical and rheological characterization ...

Guegan, Q; Foulc, J N; Tillement, O; Guegan, Quentin



Investigation of forced and isothermal chemical vapor infiltrated SiC/SiC ceramic matrix composites. Final report  

Science Conference Proceedings (OSTI)

Mechanical properties of two different layups for each of the forced CVI (41 specimens) and isothermal CVI (36 specimens) materials were investigated in air at room temperature (RT), 1000C, and at room temperature after thermal shock (RT/TS) and exposure to oxidation (RT/OX). The FCVI specimens had a nominal interfacial coating thickness of 0.3 {mu}m of pyrolytic carbon, while CVI specimens had a coating thickness of 0.1 {mu}m. Effect of reinforcement and interfacial bond on mechanical properties of composite were investigated. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were employed to analyze the fiber-matrix interface and the toughening mechanisms in this ceramic composite system.

Sankar, J.; Kelkar, A.D.; Vaidyanathan, R. [North Carolina Agricultural and Technical State Univ., Greensboro, NC (United States). Dept. of Mechanical Engineering



Oxford Catalysts Group plc | Open Energy Information  

Open Energy Info (EERE)

Oxford Catalysts Group plc Oxford Catalysts Group plc Jump to: navigation, search Name Oxford Catalysts Group plc Place Oxford, United Kingdom Zip OX2 6UD Sector Hydro, Hydrogen Product Developer of catalysts for room-temperature hydrogen production, hot steam production and Fischer-Tropsch processes. Coordinates 43.781517°, -89.571699° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.781517,"lon":-89.571699,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}


Mechanisms Underlying Cellular Responses to Low Doses/Low LET Ionizing Radiation in Primary Haemopoietic Cells.  

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

Mechanisms Underlying Cellular Responses to Low Doses/Low LET Ionizing Radiation Mechanisms Underlying Cellular Responses to Low Doses/Low LET Ionizing Radiation in Primary Haemopoietic Cells. Munira Kadhim 1 , Stefania Militi 1 , Debbie Bowler 1 , Denise Macdonald 1 and Kevin Prise 2 1 Radiation and Genome Stability Unit, MRC, Harwell, Didcot, Oxon, OX11 0RD, UK 2 Gray Cancer Institute ,PO Box 100, Mount Vernon Hospital, Northwood, HA6 2JR, UK Because the human population is genetically heterogeneous, it is important to understand the role that heterogeneity may play in radiation response. Exposure to ionizing radiation can lead to a suite of changes, including increased mutation rate, delayed reproductive cell death, and delayed chromosomal aberrations, all of which are manifestations of the complex genomic instability (GI) phenotype. Following exposure to either high LET


SSEE-Project to Develop a Rwandan National Strategy on Climate Change and  

Open Energy Info (EERE)

SSEE-Project to Develop a Rwandan National Strategy on Climate Change and SSEE-Project to Develop a Rwandan National Strategy on Climate Change and Low Carbon Development Jump to: navigation, search Name SSEE-Project to Develop a Rwandan National Strategy on Climate Change and Low Carbon Development Agency/Company /Organization United Kingdom Department for International Development, United Nations Development Programme (UNDP) Partner Smith School for Enterprise and Environment, University of Oxford Sector Climate, Energy, Land Topics Implementation, Low emission development planning, Policies/deployment programs Website http://www.smithschool.ox.ac.u Program Start 2010 Country Rwanda UN Region Middle Africa References SSEE-Project to Develop a Rwandan National Strategy on Climate Change and Low Carbon Development[1]


Analysis, Tuning and Comparison of Two General Sparse Solvers for Distributed Memory Computers  

E-Print Network (OSTI)

We describe the work performed in the context of a Franco-Berkeley funded project between NERSC-LBNL located in Berkeley (USA) and CERFACS-ENSEEIHT located in Toulouse (France). We discuss both the tuning and performance analysis of two distributed memory sparse solvers (SuperLU from Berkeley and MUMPS from Toulouse) on the 512 processor Cray T3E from NERSC (Lawrence Berkeley National Laboratory). This project gave us the opportunity to improve the algorithms and add new features to the codes. We then quite extensively analyse and compare the two approaches on a set of large problems from real applications. We further explain the main differences in the behaviour of the approaches on artificial regular grid problems. As a conclusion to this activity report, we mention a set of parallel sparse solvers on which this type of study should be extended. Keywords: sparse linear systems, distributed memory codes, multifrontal, supernodal, direct methods, comparison of codes. AMS(MOS) subject classifications: 65F05, 65F50. 1 Current reports available at http://www.cerfacs.fr/algor/algo reports.html. The project was supported by the France-Berkeley Fund. This project also utilized resources of the National Energy Research Scientific Computing Center (NERSC) under contract number DE-AC03-76SF00098. 2 amestoy@enseeiht.fr. ENSEEIHT-IRIT, 2 rue Camichel, 31071 Toulouse, France. Much of the work done while a visitor at NERSC. 3 duff@cerfacs.fr. Also at Atlas Centre, RAL, Oxon OX11 0QX, England. 4 jeanyves@nag.co.uk. NAg Ltd, Wilkinson House, Oxford OX2 8DR, England. 5 xiaoye@nersc.gov. NERSC, Lawrence Berkeley National Lab, MS 50F, 1 Cyclotron Rd., Berkeley, CA 94720. The research of this author was supported in part by the National Science Foundation Cooperative Agreement...

Patrick R. Amestoy; Iain S. Duff; Jean-Yves L' Excellent; Xiaoye S. Li



In Situ Iron Oxide Emplacement for Groundwater Arsenic Remediation  

E-Print Network (OSTI)

Iron oxide-bearing minerals have long been recognized as an effective reactive media for arsenic-contaminated groundwater remediation. This research aimed to develop a technique that could facilitate in situ oxidative precipitation of Fe3+ in a soil (sand) media for generating a subsurface iron oxide-based reactive barrier that could immobilize arsenic (As) and other dissolved metals in groundwater. A simple in situ arsenic treatment process was successfully developed for treating contaminated rural groundwater using iron oxide-coated sand (IOCS). Using imbibition flow, the system facilitated the dispersive transport of ferrous iron (Fe2+) and oxidant solutions in porous sand to generate an overlaying blanket where the Fe2+ was oxidized and precipitated onto the surface as ferric oxide. The iron oxide (FeOx) emplacement process was significantly affected by (1) the initial surface area and surface-bound iron content of the sand, (2) the pH and solubility of the coating reagents, (3) the stability of the oxidant solution, and (4) the chemical injection schedule. In contrast to conventional excavate-and-fill treatment technologies, this technique could be used to in situ replace a fresh iron oxide blanket on the sand and rejuvenate its treatment capacity for additional arsenic removal. Several bench-scale experiments revealed that the resultant IOCS could treat arsenic-laden groundwater for extended periods of time before approaching its effective life cycle. The adsorption capacity for As(III) and As(V) was influenced by (1) the amount of iron oxide accumulated on the sand surface, (2) the system pH, and (3) competition for adsorption sites from other groundwater constituents such as silicon (Si) and total dissolved solids (TDS). Although the IOCS could be replenished several times before exhaustion, the life cycle of the FeOx reactive barrier may be limited by the gradual loss of hydraulic conductivity induced by the imminent reduction of pore space over time.

Abia, Thomas Sunday



Plate-Based Fuel Processing System Final Report  

DOE Green Energy (OSTI)

On-board reforming of liquid fuels into hydrogen is an enabling technology that could accelerate consumer usage of fuel cell powered vehicles. The technology would leverage the convenience of the existing gasoline fueling infrastructure while taking advantage of the fuel cell efficiency and low emissions. Commercial acceptance of on-board reforming faces several obstacles that include: (1) startup time, (2) transient response, and (3) system complexity (size, weight and cost). These obstacles are being addressed in a variety of projects through development, integration and optimization of existing fuel processing system designs. In this project, CESI investigated steam reforming (SR), water-gas-shift (WGS) and preferential oxidation (PrOx) catalysts while developing plate reactor designs and hardware where the catalytic function is integrated into a primary surface heat exchanger. The plate reactor approach has several advantages. The separation of the reforming and combustion streams permits the reforming reaction to be conducted at a higher pressure than the combustion reaction, thereby avoiding costly gas compression for combustion. The separation of the two streams also prevents the dilution of the reformate stream by the combustion air. The advantages of the plate reactor are not limited to steam reforming applications. In a WGS or PrOx reaction, the non-catalytic side of the plate would act as a heat exchanger to remove the heat generated by the exothermic WGS or PrOx reactions. This would maintain the catalyst under nearly isothermal conditions whereby the catalyst would operate at its optimal temperature. Furthermore, the plate design approach results in a low pressure drop, rapid transient capable and attrition-resistant reactor. These qualities are valued in any application, be it on-board or stationary fuel processing, since they reduce parasitic losses, increase over-all system efficiency and help perpetuate catalyst durability. In this program, CESI took the initial steam reforming plate-reactor concept and advanced it towards an integrated fuel processing system. A substantial amount of modeling was performed to guide the catalyst development and prototype hardware design and fabrication efforts. The plate-reactor mechanical design was studied in detail to establish design guidelines which would help the plate reactor survive the stresses of repeated thermal cycles (from start-ups and shut-downs). Integrated system performance modeling was performed to predict system efficiencies and determine the parameters with the most significant impact on efficiency. In conjunction with the modeling effort, a significant effort was directed towards catalyst development. CESI developed a highly active, sulfur tolerant, coke resistant, precious metal based reforming catalyst. CESI also developed its own non-precious metal based water-gas shift catalyst and demonstrated the catalysts durability over several thousands of hours of testing. CESI also developed a unique preferential oxidation catalyst capable of reducing 1% CO to < 10 ppm CO over a 35 C operating window through a single pass plate-based reactor. Finally, CESI combined the modeling results and steam reforming catalyst development efforts into prototype hardware. The first generation 3kW(e) prototype was fabricated from existing heat-exchanger plates to expedite the fabrication process. This prototype demonstrated steady state operation ranging from 5 to 100% load conditions. The prototype also demonstrated a 20:1 turndown ratio, 10:1 load transient operation and rapid start-up capability.

Carlos Faz; Helen Liu; Jacques Nicole; David Yee



Model catalytic studies of single crystal, polycrystalline metal, and supported catalysts  

E-Print Network (OSTI)

This dissertation is focused on understanding the structure-activity relationship in heterogeneous catalysis by studying model catalytic systems. The catalytic oxidation of CO was chosen as a model reaction for studies on a variety of catalysts. A series of Au/TiO2 catalysts were prepared from various metalorganic gold complexes. The catalytic activity and the particle size of the gold catalysts were strongly dependent on the gold complexes. The Au/TiO2 catalyst prepared from a tetranuclear gold complex showed the best performance for CO oxidation, and the average gold particle size of this catalyst was 3.1 nm. CO oxidation was also studied over Au/MgO catalysts, where the MgO supports were annealed to various temperatures between 900 and 1300 K prior to deposition of Au. A correlation was found between the activity of Au clusters for the catalytic oxidation of CO and the F-center concentration in the MgO support. In addition, the catalytic oxidation of CO was studied in a batch reactor over supported Pd/Al2O3 catalysts, a Pd(100) single crystal, as well as polycrystalline metals of rhodium, palladium, and platinum. A hyperactive state, corresponding to an oxygen covered surface, was observed at high O2/CO ratios at elevated pressures. The reaction rate at this state was significantly higher than that on CO-covered surfaces at stoichiometric conditions. The oxygen chemical potential required to achieve the hyperactive state depends on the intrinsic properties of the metal, the particle size, and the reaction temperature. A well-ordered ultra-thin titanium oxide film was synthesized on the Mo(112) surface as a model catalyst support. Two methods were used to prepare this Mo(112)- (8x2)-TiOx film, including direct growth on Mo(112) and indirect growth by deposition of Ti onto monolayer SiO2/Mo(112). The latter method was more reproducible with respect to film quality as determined by low-energy electron diffraction and scanning tunneling microscopy. The thickness of this TiOx film was one monolayer and the oxidation state of Ti was +3 as determined by Auger spectroscopy, high-resolution electron energy loss spectroscopy, and X-ray photoelectron spectroscopy.

Yan, Zhen



Mechanisms of plutonium sorption to mineral oxide surfaces: new insights with implications for colloid-enhanced migration  

SciTech Connect

New equilibrium and kinetic models have been developed to describe rate-limited sorption and desorption of Pu onto and off of mineral oxide surfaces using a generic approach to estimate sorption constants that require minimal laboratory calibrations. Equilibrium reactions describing a total of six surface species were derived from a combination of empirical relationships previously described in the literature and generated as part of this work. These sorption reactions and corresponding equilibrium constants onto goethite (and silica) are: ?SOH+?Pu?^(3+)??SO?Pu?^(2+)+H^+, Log K=-2.1 (-10) (1) ?SOH+?Pu?^(4+)??SO?Pu?^(3+)+H^+, Log K=15.3 (7.2) (2) ?SOH+PuO_2^+??SO?PuO?_2+H^+, Log K=-8.5 (-16.5) (3) ?SOH+PuO_2^(2+)??SOPuO_2^++H^+, Log K=1.2 (-6.5) (4) ?SOH+?Pu?^(4+)+3H_2 O??SOPu?(OH)?_3+4H^+, Log K=12.5 (4.6) (5) ?SOH+?Pu?^(4+)+4H_2 O??SOPu?(OH)?_4^-+5H^+, Log K=5.0 (-2.3) (6) The kinetic model decouples reduced (III, IV) and oxidized (V, VI) forms of Pu via a single rate-limiting, but reversible, surface mediated reaction: ?SOPuO_2+H_2 O ?(??k_1 )/?(??k_2 )?SOPu?(OH)?_3+?(1/2) H_(2(g)), ?Log k?_1=-5.3 (7) Where the reaction rate is equal to: -d[?SOPuO_2 ]/dt=k_1?[?Pu?_ox]-k_2?[?Pu?_RED] (8) and [PuOX] and [PuRED] are the sums of the oxidized (V and VI) and reduced (III and IV) surface species, respectively. Predictions using the equilibrium and kinetic models were validated against previously published experimental results, which give credence to the validity of the proposed mechanisms controlling the sorption of Pu onto mineral oxide surfaces. Of importance, a reversible, rate-limited, reaction successfully predicted time dependent behavior associated with Pu sorption onto goethite. Previously, researchers have suggested desorption of Pu to these surfaces is extremely slow or even irreversible. Model predictions based on such suggestions would severely overestimate the kinetic stability of Pu sorbed species and the overall importance that Pu sorption kinetics, alone, has on pseudo-colloid transport mechanisms.

Schwantes, Jon M.; Santschi, Peter H.



United States Government  

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

.---.-.-.--.- -.--..- .---.-.-.--.- -.--..- Department of Enery y memorandum si!%.rE:.c;. Letter Re,porr on "Sandi;;, Natianai .I:,al-ji~;.utory-?L'::'~~i bIe.xieo Stetdent hitern Saf2i-y Training" INS.-L.-OX-46 ('hspeztion 'i'4o. SOS:IS007:) Mzfiager:, Sandla Size 0fr"ice '7'his I.,etter Xtepor? provid.es the results of an CBffice ofInspec1-or Gel~eriii inspection of the student intern safety P P . O ~ T . ~ I X J af the Dcpaxtn~cnt of Energy's (Di:>Ilys] Srnnr1i.a National X,;ll,r>ratr>ry -S.Ist~xi bfexico (Sandia). Saldia is a Na~.ionsl !';i.uclear Security A cii~~i.r~isrmf.ic~~i (h%-SP,) facility operated by Sanldia Clc~q)i~r;it.iu~~. Saildia's missioi~ is ti) meet nu~iiaria! needs i r ~ thit arcas of nuclear we&pons, energy and Infrasrruci-ure stssalriirlce, nonprolik,ratio~.l> defense systems mlij assessl-raents, a



Office of Legacy Management (LM)

PROCEDUREPORTiEPRECIPI¶!ATIONOPl!RORIUE~~~ I/ PROCEDUREPORTiEPRECIPI¶!ATIONOPl!RORIUE~~~ I/ .I FNoHl?oaoammoussoImIw I: J I: C.R:. stlm awl r&ale aorden 1. !&waotlw cnlverel~ - February 3, 1953 I A oompleta repcwt of thle work will be mndo avnllable aa an ABC-NY0 report ia the near ,fut-* Ru, solution nreJl oontain 2 to 150 mg. of thorium 0-e:. Thus far, the wxlmblm llmite of oontamhants studled have bed 1200111~. o?mlxad trivalent rare earth oxidea (lanthanum, QO; I' prcmeoUymlu81, neodymium and yttrium) ,and S50 tug. of phosphoi~ I pentoxlde (aa.phoaphorla aoid). In a single proalpltatloni~ total weight ot rare earth and phoephorlc,ox~r aontaminat~ I.. i~&ti poipitate ~POZB 80 w. or th~mm odds IS OS tlse on 5w. A double preoipltatlon will quantlt<blP somaw $I Conoentrate the solution 0-m therltm to about 50


Microsoft Word - TRUPACT-III Quick Facts.docx  

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

TRUPACT---III TRUPACT---III Q uick F acts Cask: TRUPACT---III Manufacturer: ABW Certification: U.S. N uclear R egulatory C ommission C ertificate N umber 9 305 General D escription: A r ectangular c ontainer u sed t o t ransport t ransuranic w aste i n a S tandard L arge B ox 2 (SLB2) b y h ighway t rucks. T he p ackaging i s s ingle---contained a nd c omprised o f i nner and o uter s tainless s teel p lates a nd p olyurethane f oam t o p rotect a gainst p otential punctures a nd f ire d anger. A n o verpack c over i s d esigned t o p rotect t he c losure l id. Package T ype: B Gross W eight: Package ( maximum a llowable l oaded w ith c ontents): 55,116 l bs. Expected w eight: 49,000 l bs. Approximate E mpty P ackage: 43,630 l bs. Maximum P ayload W eight: 11,486 l bs. Overall D imensions: Outer w idth o f c ontainer: 8.2 f eet Height



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


Note: This page contains sample records for the topic "ox yg enates" 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.


PV Crystalox Solar AG formerly PV Silicon AG | Open Energy Information  

Open Energy Info (EERE)

PV Crystalox Solar AG formerly PV Silicon AG PV Crystalox Solar AG formerly PV Silicon AG Jump to: navigation, search Name PV Crystalox Solar AG (formerly PV Silicon AG) Place Abingdon, England, United Kingdom Zip OX14 4SE Sector Solar Product UK-based manufacturer of multicrystalline ingots and wafers to the solar industry; as of early 2009, to output solar-grade polysilicon. Coordinates 36.71049°, -81.975194° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.71049,"lon":-81.975194,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}



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

Waves Waves in the ð; 0Þ Magnetically Ordered Iron Chalcogenide Fe 1:05 Te O. J. Lipscombe, 1 G. F. Chen, 2 Chen Fang, 3 T. G. Perring, 4,5 D. L. Abernathy, 6 A. D. Christianson, 6 Takeshi Egami, 1,6 Nanlin Wang, 2 Jiangping Hu, 3,2 and Pengcheng Dai 1,6,2, * 1 The University of Tennessee, Knoxville, Tennessee 37996-1200, USA 2 Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China 3 Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA 4 ISIS Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom 5 Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom 6 Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA (Received 11 November 2010; published 4 February 2011) We use neutron scattering to show that spin waves in the iron chalcogenide Fe 1:05 Te display


?ot8rh QI ahnloal Corporation In Hart IUnover, Ma86rohusett8,  

Office of Legacy Management (LM)

GE 1 GE 1 ;" qr)-1 s?llq ' p raspy.. c" ifa K. mris I talked with Hr. Wllllm cIF(Iy, Metrllurgist, Wnlon CarbId@ Nuclear cOrp8ny, 08k B&t&$@, Tenne66ee, on April 26, 1961. He informed me th&t the #rtioMl Northern birislon, Ame~ic6.n ?ot8rh QI ahnloal Corporation In Hart IUnover, Ma86rohusett8, la pePfopn1~ lo8lve forming studier for the. ilnion olo)w Wuolem Conpmy "p l7?JHa). The work at National Northern l#rirc.- alon ir under the 6upenl6lon of Ehsll Phillpohuc4~, v of Spealrl Prcbduots. The @ox& to data ha8 been pwfonwd wlth 430 strlnle66 rteel and urma%um metal - both hot snb 0018 wor4c have been performed at pr688u~r fmm 100,000 to 900,000 prl. The shape of the pleu88 na not dlrolored. In 6<lon work ha6 been done with



Office of Legacy Management (LM)

Su'zject: Su'zject: IraS3~ct: nr - - -- Of -.irc:?ou St: s at Ca;C Lidye. To: Tine irea Zn;ineer, : (Attention: 'adissn S=_uare -flea, l:ex- York, I-Ia>or P'nillip I'errittj 1. "-I,' 1 The warehouses being used at Cak Sidge for the storage Gf' i'orei'6, ore, tailices and slag were inspected 9 Aug. 1944 by representatives of t:?cig :/* "c Zledical Section acd Captain K. E. Zimmerman. 2. in warehouse 5:2, at present, two days per month. In this no ona is working more than ore or warehouse are stored high grade ore, '* OX109 residues a.& tailings, Samples of tii2 air in the gave tine results indicated in the inclosed 1e';ter. ?rarehocsa taken 23 ::a:~ S-l, Xeasurenonts were made of t,ie ss;"-ns radiation to~hich workers miEht be exposed, and thefolloxi?.g



Office of Legacy Management (LM)

^x .,.,..,,, .,_...,,, .~, .~~ ,.,_,. _ . . ^..~ .,.-....-.. ~.~ .,,_,_ I-.~ ___:-._ ,,_ I --,,,,-.I I -... "I _-_,, i ,,,, (__. ..-;.mss,.r^-' ^x .,.,..,,, .,_...,,, .~, .~~ ,.,_,. _ . . ^..~ .,.-....-.. ~.~ .,,_,_ I-.~ ___:-._ ,,_ I --,,,,-.I I -... "I _-_,, i ,,,, (__. ..-;.mss,.r^-' . :' _.' i' . ' . r*911;&& --- _. JJ' 4)&-] " ]+-ic 7-g &Lc u.4 u - 7 S' JJ-- ,C- iki?rdC~L\T $' Y' IEThLS COP?O~,~TION d - I8 4.1 INROAD STREET (In ciuplicste) Xovezber 30, 1942. The I)ist?ict Eng~Gi U. S. EZiox 42, CL',t'~~'.' -~-~: ~,'y:-y;, :.yz --'- -- Station F., ,y: r: :...,;.. " ."' ..__.---- l?ez Yoris, N.Y. . , . ._ . AtZE?tlOIl: M;ia~or Tfio3a.s T. Cre2sbis.f. oertl&2ez?: Re: ContTect Ko. X-7L05-enn-18 C~zz~~rir,~ kt.". the request ol' POLIO 111~. Xeglzn, 7.7~ ~"2 enciosicg tlciee letters addressed to Z-&er &


Final Report for the DOE Chemical Hydrogen Storage Center of Excellence  

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

FINAL FINAL R EPORT F OR T HE D OE C HEMICAL HYDROGEN S TORAGE C ENTER O F EXCELLENCE Kevin C . O tt, C enter D irector LOS A LAMOS N ATIONAL L ABORATORY PO B ox 1 663 Los A lamos, N M 8 7545 Summarizing C ontributions f rom C enter P artners: Los A lamos N ational L aboratory ( LANL) Pacific N orthwest N ational L aboratory ( PNNL) Millennium C ell, I nc. Northern A rizona U niversity Rohm a nd H aas/Dow C hemical C ompany University o f A labama University o f C alifornia, D avis University o f C alifornia, L os A ngeles/University o f M issouri University o f O regon Pennsylvania S tate U niversity University o f P ennsylvania University o f W ashington U.S. B orax C orporation Intematix C orporation This f inal r eport w as p repared w ith t he a ssistance o f T om A utrey ( PNNL), a nd F ran Stephens ( LANL) w ho p repared


Ultrafast nanolaser device for detecting cancer in a single live cell.  

Science Conference Proceedings (OSTI)

Emerging BioMicroNanotechnologies have the potential to provide accurate, realtime, high throughput screening of live tumor cells without invasive chemical reagents when coupled with ultrafast laser methods. These optically based methods are critical to advancing early detection, diagnosis, and treatment of disease. The first year goals of this project are to develop a laser-based imaging system integrated with an in- vitro, live-cell, micro-culture to study mammalian cells under controlled conditions. In the second year, the system will be used to elucidate the morphology and distribution of mitochondria in the normal cell respiration state and in the disease state for normal and disease states of the cell. In this work we designed and built an in-vitro, live-cell culture microsystem to study mammalian cells under controlled conditions of pH, temp, CO2, Ox, humidity, on engineered material surfaces. We demonstrated viability of cell culture in the microsystem by showing that cells retain healthy growth rates, exhibit normal morphology, and grow to confluence without blebbing or other adverse influences of the material surfaces. We also demonstrated the feasibility of integrating the culture microsystem with laser-imaging and performed nanolaser flow spectrocytometry to carry out analysis of the cells isolated mitochondria.

Gourley, Paul Lee; McDonald, Anthony Eugene



Oxynitride Thin Film Barriers for PV Packaging  

DOE Green Energy (OSTI)

Dielectric thin-film barrier and adhesion-promoting layers consisting of silicon oxynitride materials (SiOxNy, with various stoichiometry) were investigated. For process development, films were applied to glass (TCO, conductive SnO2:F; or soda-lime), polymer (PET, polyethylene terephthalate), aluminized soda-lime glass, or PV cell (a-Si, CIGS) substrates. Design strategy employed de-minimus hazard criteria to facilitate industrial adoption and reduce implementation costs for PV manufacturers or suppliers. A restricted process window was explored using dilute compressed gases (3% silane, 14% nitrous oxide, 23% oxygen) in nitrogen (or former mixtures, and 11.45% oxygen mix in helium and/or 99.999% helium dilution) with a worst-case flammable and non-corrosive hazard classification. Method employed low radio frequency (RF) power, less than or equal to 3 milliwatts per cm2, and low substrate temperatures, less than or equal to 100 deg C, over deposition areas less than or equal to 1000 cm2. Select material properties for barrier film thickness (profilometer), composition (XPS/FTIR), optical (refractive index, %T and %R), mechanical peel strength and WVTR barrier performance are presented.

Glick, S. H.; delCueto, J. A.; Terwilliger, K. M.; Jorgensen, G. J.; Pankow, J. W.; Keyes, B. M.; Gedvilas, L. M.; Pern, F. J.



Sensitivity and accuracy considerations for neutron assay of plutonium-contaminated waste in large containers  

DOE Green Energy (OSTI)

Since the 1970 innovations have allowed both active and passive neutron techniques to address various safeguards and waste measurement needs in the DOE complex. Much research was focused on satisfjring the 100-nCi/g detection limit for TRU waste in 208-liter drums. The emphasis on measuring drum-sized containers for disposal at WIPP has resulted in improved waste assay capability that now needs to be extended to larger containers. The desire to expedite the decontamination and decommissioning of certtain DOE facilities, and the large waste encountered in that process, has prompted the need for increasingly large disposal containers. Instruments have recently been built to accommodate crates that are nearly 100 cubic feet in volume, such as a B-25 box or Standard Waste 13ox. The density of hydrogen inside a waste container profoundly affects the accuracy of neutron measurements, and the metal content greatly affects sensitivity. Depending on the matrix, and especially the hydrogen content, the response of an instrument to a single point source can vary tremendously within the container. Because the density and composition of metals inside each container are unknown, the observed cosmic ray background rate varies from one container to the next, resulting in a loss of sensitivity for passive counters. In the paper we will explore the magnitude of these problcms for both metal- and hydrogen-bearing matrices in a crate-sized containers.

Melton, S. G. (Sheila G.); Estep, R. J. (Robert J.)



Probing brain oxygenation with near infrared spectroscopy  

E-Print Network (OSTI)

The fundamentals of near infrared spectroscopy (NIRS) are reviewed. This technique allows to measure the oxygenation of the brain tissue. The particular problems involved in detecting regional brain oxygenation (rSO2) are discussed. The dominant chromophore (light absorber) in tissue is water. Only in the NIR light region of 650-1000 nm, the overall absorption is sufficiently low, and the NIR light can be detected across a thick layer of tissues, among them the skin, the scull and the brain. In this region, there are many absorbing light chromophores, but only three are important as far as the oxygenation is concerned. They are the hemoglobin (HbO2), the deoxy-hemoglobin (Hb) and cytochrome oxidase (CtOx). In the last 20 years there was an enormous growth in the instrumentation and applications of NIRS. . The devices that were used in our experiments were : Somanetics's INVOS Brain Oximeter (IBO) and Toomim's HEG spectrophotometer. The performances of both devices were compared including their merits and draw...

Gersten, Alexander; Raz, Amir; Fried, Robert



Pseudo-capacitor device for aqueous electrolytes  

DOE Patents (OSTI)

A pseudo-capacitor having a high energy storage capacity develops a double layer capacitance as well as a Faradaic or battery-like redox reaction, also referred to as pseudo-capacitance. The Faradaic reaction gives rise to a capacitance much greater than that of the typical ruthenate oxide ultracapacitor which develops only charge separation-based double layer capacitance. The capacitor employs a lead and/or bismuth/ruthenate and/or iridium system having the formula A{sub 2}[B{sub 2{minus}x}Pb{sub x}]O{sub 7{minus}y}, where A=Pb, Bi, and B=Ru, Ir, and O{<=}1 and O

Prakash, J.; Thackeray, M.M.; Dees, D.W.; Vissers, D.R.; Myles, K.M.



SECA Coal-Based Systems - LGFCS  

Science Conference Proceedings (OSTI)

LGFCS is developing an integrated planar (IP) SOFC technology for mega-watt scale power generation including the potential for use in highly efficient, economically competitive central generation power plant facilities fuel by coal synthesis gas. This Department of Energy Solid-State Energy Conversion Alliance (SECA) program is aimed at achieving further cell and stack technical advancements and assessing the readiness of the LGFCS SOFC stack technology to be scaled to larger-scale demonstrations in subsequent phases. LGFCS is currently in Phase 2 of the program with the Phase 1 test carrying over for completion during Phase 2. Major technical results covering the initial Phase 2 budget period include: Metric Stack Testing: 1. The Phase I metric test is a ~7.6 kW block test (2 strips) in Canton that started in March 2012 and logged 2135 hours of testing prior to an event that required the test to be shutdown. The degradation rate through 2135 hours was 0.4%/1000 hours, well below the Phase I target of 2%/1000 hours and the Phase 2 target of 1.5%/1000 hours. 2. The initial Phase II metric test consisting of 5 strips (~19 kW) was started in May 2012. At the start of the test OCV was low and stack temperatures were out of range. Shutdown and inspection revealed localized structural damage to the strips. The strips were repaired and the test restarted October 11, 2012. 3. Root cause analysis of the Phase 1 and initial Phase 2 start-up failures concluded a localized short circuit across adjacent tubes/bundles caused localized heating and thermal stress fracture of substrates. Pre-reduction of strips rather than in-situ reduction within block test rigs now provides a critical quality check prior to block testing. The strip interconnect design has been modified to avoid short circuits. Stack Design: 1. Dense ceramic strip components were redesigned to achieve common components and a uniform design for all 12 bundles of a strip while meeting a flow uniformity of greater than 95% of the mean flow for all bundles. The prior design required unique bundle components and pressure drops specifications to achieve overall strip fuel flow uniformity. 2. Slow crack growth measurements in simulated fuel environments of the MgO-MgAl2O4 substrate by ORNL reveal favorable tolerance against slow crack growth. Evidence as well of a high stress intensity threshold below which crack growth would be avoided. These findings can have very positive implications on long-term structural reliability. More testing is required, including under actual reformate fuels, to gain a deeper understanding of such time dependent reliability mechanisms. 3. A next generation (Gen2) substrate from the LGFCS supplier has been qualified. The substrate incorporates cost reductions and quality improvements. Cell Developments: 1. Subscale testing of the epsilon technology under system relevant conditions surpassed 16,000 hours with a power degradation rate of <1%/1000 hours. Key degradation mechanisms have been identified: (1) MnOx accumulation near the cathode-electrolyte interface and cathode densification (2) metals migration across the anode-ACC bilayer and general microstructure coarsening at high temperatures and peak fuel utilizations and (3) metal migration into primary interconnect (lesser mechanism) 5 2. Alternate LSM cathodes show slightly lower ASR and lesser free MnOx and chromium contamination. Long-term durability screening of three alternate cathodes is being performed. 3. Single layer anodes show very significant improvement in microstructure stability after 5000 hours testing at aggressive conditions of 925C and bundle outlet, high utilization fuel. 4. New primary interconnect designs are being tested that achieve lower ASR. Modeling performed to further balance ASR and cost through optimized designs.

Goettler, Richard



A series of Cd(II) complexes with {pi}-{pi} stacking and hydrogen bonding interactions: Structural diversities by varying the ligands  

SciTech Connect

Seven new Cd(II) complexes consisting of different phenanthroline derivatives and organic acid ligands, formulated as [Cd(PIP){sub 2}(dnba){sub 2}] (1), [Cd(PIP)(ox)].H{sub 2}O (2), [Cd(PIP)(1,4-bdc)(H{sub 2}O)].4H{sub 2}O (3), [Cd(3-PIP){sub 2}(H{sub 2}O){sub 2}].4H{sub 2}O (4), [Cd{sub 2}(3-PIP){sub 4}(4,4'-bpdc)(H{sub 2}O){sub 2}].5H{sub 2}O (5), [Cd(3-PIP)(nip)(H{sub 2}O)].H{sub 2}O (6), [Cd{sub 2}(TIP){sub 4}(4,4'-bpdc)(H{sub 2}O){sub 2}].3H{sub 2}O (7) (PIP=2-phenylimidazo[4,5-f]1,10-phenanthroline, 3-PIP=2-(3-pyridyl)imidazo[4,5-f]1,10-phenanthroline, TIP=2-(2-thienyl)imidazo[4,5-f]1,10-phenanthroline, Hdnba=3,5-dinitrobenzoic acid, H{sub 2}ox=oxalic acid, 1,4-H{sub 2}bdc=benzene-1,4-dicarboxylic acid, 4,4'-H{sub 2}bpdc=biphenyl-4,4'-dicarboxylic acid, H{sub 2}nip=5-nitroisophthalic acid) have been synthesized under hydrothermal conditions. Complexes 1 and 4 possess mononuclear structures; complexes 5 and 7 are isostructural and have dinuclear structures; complexes 2 and 3 feature 1D chain structures; complex 6 contains 1D double chain, which are further extended to a 3D supramolecular structure by {pi}-{pi} stacking and hydrogen bonding interactions. The N-donor ligands with extended {pi}-system and organic acid ligands play a crucial role in the formation of the final supramolecular frameworks. Moreover, thermal properties and fluorescence of 1-7 are also investigated. -- Graphical abstract: Seven new supramolecular architectures have been successfully isolated under hydrothermal conditions by reactions of different phen derivatives and Cd(II) salts together with organic carboxylate anions auxiliary ligands. Display Omitted Research highlights: {yields} Complexes 1-7 are 0D or 1D polymeric structure, the {pi}-{pi} stacking and H-bonding interactions extend the complexes into 3D supramolecular network. To our knowledge, systematic study on {pi}-{pi} stacking and H-bonding interactions in cadmium(II) complexes are still limited. {yields} The structural differences among the title complexes indicate the importance of N-donor chelating ligands for the creation of molecular architectures. {yields} The thermal and fluorescence properties of title complexes have also been reported.

Wang Xiuli, E-mail: wangxiuli@bhu.edu.c [Faculty of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121000 (China); Zhang Jinxia; Liu Guocheng; Lin Hongyan [Faculty of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121000 (China)



Synthesis of Silica Supported AuCu Nanoparticle Catalysts and the Effects of Pretreatment Conditions for the CO Oxidation Reaction  

SciTech Connect

Supported gold nanoparticles have generated an immense interest in the field of catalysis due to their extremely high reactivity and selectivity. Recently, alloy nanoparticles of gold have received a lot of attention due to their enhanced catalytic properties. Here we report the synthesis of silica supported AuCu nanoparticles through the conversion of supported Au nanoparticles in a solution of Cu(C{sub 2}H{sub 3}O{sub 2}){sub 2} at 300 C. The AuCu alloy structure was confirmed through powder XRD (which indicated a weakly ordered alloy phase), XANES, and EXAFS. It was also shown that heating the AuCu/SiO{sub 2} in an O{sub 2} atmosphere segregated the catalyst into a Au-CuO{sub x} heterostructure between 150 C to 240 C. Heating the catalyst in H{sub 2} at 300 C reduced the CuO{sub x} back to Cu{sup 0} to reform the AuCu alloy phase. It was found that the AuCu/SiO{sub 2} catalysts were inactive for CO oxidation. However, various pretreatment conditions were required to form a highly active and stable Au-CuO{sub x}/SiO{sub 2} catalyst to achieve 100% CO conversion below room-temperature. This is explained by the in situ FTIR result, which shows that CO molecules can be chemisorbed and activated only on the Au-CuOx/SiO{sub 2} catalyst but not on the AuCu/SiO{sub 2} catalyst.

J Bauer; D Mullins; M Li; Z Wu; E Payzant; S Overbury; S Dai



Pilot-Scale Demonstration of hZVI Process for Treating Flue Gas Desulfurization Wastewater at Plant Wansley, Carrollton, GA  

E-Print Network (OSTI)

The hybrid Zero Valent Iron (hZVI) process is a novel chemical treatment platform that has shown great potential in our previous bench-scale tests for removing selenium, mercury and other pollutants from Flue Gas Desulfurization (FGD) wastewater. This integrated treatment system employs new iron chemistry to create highly reactive mixture of Fe^0, iron oxides (FeOx) and various forms of Fe (II) for the chemical transformation and mineralization of various heavy metals in water. To further evaluate and develop the hZVI technology, a pilot-scale demonstration had been conducted to continuously treat 1-2 gpm of the FGD wastewater for five months at Plant Wansley, a coal-fired power plant of Georgia Power. This demonstrated that the scaled-up system was capable of reducing the total selenium (of which most was selenate) in the FGD wastewater from over 2500 ppb to below 10 ppb and total mercury from over 100 ppb to below 0.01 ppb. This hZVI system reduced other toxic metals like Arsenic (III and V), Chromium (VI), Cadmium (II), Lead (II) and Copper (II) from ppm level to ppb level in a very short reaction time. The chemical consumption was estimated to be approximately 0.2-0.4 kg of ZVI per 1 m^3 of FGD water treated, which suggested the process economics could be very competitive. The success of the pilot test shows that the system is scalable for commercial application. The operational experience and knowledge gained from this field test could provide guidance to further improvement of technology for full scale applications. The hZVI technology can be commercialized to provide a cost-effective and reliable solution to the FGD wastewater and other metal-contaminated waste streams in various industries. This technology has the potential to help industries meet the most stringent environmental regulations for heavy metals and nutrients in wastewater treatment.

Peddi, Phani 1987-



Changes in Zinc Speciation with Mine Tailings Acidification in a Semiarid Weathering Environment  

Science Conference Proceedings (OSTI)

High concentrations of residual metal contaminants in mine tailings can be transported easily by wind and water, particularly when tailings remain unvegetated for decades following mining cessation, as is the case in semiarid landscapes. Understanding the speciation and mobility of contaminant metal(loid)s, particularly in surficial tailings, is essential to controlling their phytotoxicities and to revegetating impacted sites. In prior work, we showed that surficial tailings samples from the Klondyke State Superfund Site (AZ, USA), ranging in pH from 5.4 to 2.6, represent a weathering series, with acidification resulting from sulfide mineral oxidation, long-term Fe hydrolysis, and a concurrent decrease in total (6000 to 450 mg kg{sup -1}) and plant-available (590 to 75 mg kg{sup -1}) Zn due to leaching losses and changes in Zn speciation. Here, we used bulk and microfocused Zn K-edge X-ray absorption spectroscopy (XAS) data and a six-step sequential extraction procedure to determine tailings solid phase Zn speciation. Bulk sample spectra were fit by linear combination using three references: Zn-rich phyllosilicate (Zn{sub 0.8}talc), Zn sorbed to ferrihydrite (Zn{sub adsFeOx}), and zinc sulfate (ZnSO{sub 4} {center_dot} 7H{sub 2}O). Analyses indicate that Zn sorbed in tetrahedral coordination to poorly crystalline Fe and Mn (oxyhydr)oxides decreases with acidification in the weathering sequence, whereas octahedral zinc in sulfate minerals and crystalline Fe oxides undergoes a relative accumulation. Microscale analyses identified hetaerolite (ZnMn{sub 2}O{sub 4}), hemimorphite (Zn{sub 4}Si{sub 2}O{sub 7}(OH){sub 2} {center_dot} H{sub 2}O) and sphalerite (ZnS) as minor phases. Bulk and microfocused spectroscopy complement the chemical extraction results and highlight the importance of using a multimethod approach to interrogate complex tailings systems.

Hayes, Sarah M.; O’ Day, Peggy A.; Webb, Sam M.; Maier, Raina M.; Chorover, Jon (UCM); (SLAC); (Ariz)




DOE Green Energy (OSTI)

Visible light-photocatalysis could provide a cost-effective route to recycle CO{sub 2} to useful chemicals or fuels. Development of an effective catalyst for the photocatalytic synthesis requires (i) the knowledge of the surface band gap and its relation to the surface structure, (ii) the reactivity of adsorbates and their reaction pathways, and (iii) the ability to manipulate the actives site for adsorption, surface reaction, and electron transfer. The objective of this research is to study the photo-catalytic activity of TiO{sub 2}-base catalyst. A series of TiO{sub 2}-supported metal catalysts were prepared for determining the activity and selectivity for the synthesis of methane and methanol. 0.5 wt% Cu/SrTiO{sub 3} was found to be the most active and selective catalyst for methanol synthesis. The activity of the catalyst decreased in the order: Ti silsesquioxane > Cu/SrTiO{sub 3} > Pt/TiO{sub 2} > Cu/TiO{sub 2} > TiO{sub 2} > Rh/TiO{sub 2}. To further increase the number of site for the reaction, we propose to prepare monolayer and multiplayer TiOx on high surface area mesoporous oxides. These catalysts will be used for in situ IR study in the Phase II research project to determine the reactivity of adsorbates. Identification of active adsorbates and sites will allow incorporation of acid/basic sites to alter the nature of CO{sub 2} and H{sub 2}O adsorbates and with Pt/Cu sites to direct reaction pathways of surface intermediates, enhancing the overall activity and selectivity for methanol and hydrocarbon synthesis. The overall goal of this research is to provide a greater predictive capability for the design of visible light-photosynthesis catalysts by a deeper understanding of the reaction kinetics and mechanism as well as by better control of the coordination/chemical environment of active sites.

Steven S.C. Chuang




SciTech Connect

In this paper, we present the Clustering-Labels-Score Patterns Spotter (CLaSPS), a new methodology for the determination of correlations among astronomical observables in complex data sets, based on the application of distinct unsupervised clustering techniques. The novelty in CLaSPS is the criterion used for the selection of the optimal clusterings, based on a quantitative measure of the degree of correlation between the cluster memberships and the distribution of a set of observables, the labels, not employed for the clustering. CLaSPS has been primarily developed as a tool to tackle the challenging complexity of the multi-wavelength complex and massive astronomical data sets produced by the federation of the data from modern automated astronomical facilities. In this paper, we discuss the applications of CLaSPS to two simple astronomical data sets, both composed of extragalactic sources with photometric observations at different wavelengths from large area surveys. The first data set, CSC+, is composed of optical quasars spectroscopically selected in the Sloan Digital Sky Survey data, observed in the x-rays by Chandra and with multi-wavelength observations in the near-infrared, optical, and ultraviolet spectral intervals. One of the results of the application of CLaSPS to the CSC+ is the re-identification of a well-known correlation between the {alpha}{sub OX} parameter and the near-ultraviolet color, in a subset of CSC+ sources with relatively small values of the near-ultraviolet colors. The other data set consists of a sample of blazars for which photometric observations in the optical, mid-, and near-infrared are available, complemented for a subset of the sources, by Fermi {gamma}-ray data. The main results of the application of CLaSPS to such data sets have been the discovery of a strong correlation between the multi-wavelength color distribution of blazars and their optical spectral classification in BL Lac objects and flat-spectrum radio quasars, and a peculiar pattern followed by blazars in the WISE mid-infrared colors space. This pattern and its physical interpretation have been discussed in detail in other papers by one of the authors.

D'Abrusco, R.; Fabbiano, G.; Laurino, O. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Djorgovski, G.; Donalek, C.; Longo, G. [Department of Astronomy, California Institute of Technology, MC 249-17 1200 East California Blvd, Pasadena, CA 91125 (United States)



Summary of research on hydrogen production from fossil fuels conducted at NETL  

DOE Green Energy (OSTI)

In this presentation we will summarize the work performed at NETL on the production of hydrogen via partial oxidation/dry reforming of methane and catalytic decomposition of hydrogen sulfide. We have determined that high pressure resulted in greater carbon formation on the reforming catalysts, lower methane and CO2 conversions, as well as a H2/CO ratio. The results also showed that Rh/alumina catalyst is the most resistant toward carbon deposition both at lower and at higher pressures. We studied the catalytic partial oxidation of methane over Ni-MgO solid solutions supported on metal foams and the results showed that the foam-supported catalysts reach near-equilibrium conversions of methane and H2/CO selectivities. The rates of carbon deposition differ greatly among the catalysts, varying from 0.24 mg C/g cat h for the dipped foams to 7.0 mg C/g cat h for the powder-coated foams, suggesting that the exposed Cr on all of the foam samples may interact with the Ni-MgO catalyst to kinetically limit carbon formation. Effects of sulfur poisoning on reforming catalysts were studies and pulse sulfidation of catalyst appeared to be reversible for some of the catalysts but not for all. Under pulse sulfidation conditions, the 0.5%Rh/alumina and NiMg2Ox-1100C (solid solution) catalysts were fully regenerated after reduction with hydrogen. Rh catalyst showed the best overall activity, less carbon deposition, both fresh and when it was exposed to pulses of H2S. Sulfidation under steady state conditions significantly reduced catalyst activity. Decomposition of hydrogen sulfide into hydrogen and sulfur was studied over several supported metal oxides and metal oxide catalysts at a temperature range of 650-850C. H2S conversions and effective activation energies were estimated using Arrhenius plots. The results of these studies will further our understanding of catalytic reactions and may help in developing better and robust catalysts for the production of hydrogen from fossil fuels

Shamsi, Abolghasem




E-Print Network (OSTI)

The first high efficiency p-n-n + bifacial solar cells are presented. Efficiencies of 15.7 % and 13.6 % were measured under front and back air mass one illumination respectively at 28 C. At 7 air mass one illumination and 28 C the front efficiency increases to 16.5%. A pilot production of 200 cells was made following a fabrication process as simple as that for conventional back surface field cells. Mean efficiencies of 13.4 % and 10.7 % were obtained under front and back illumination respectively. The production yield is higher than 80%. The advantages that bifacial cells present in some applications, compared with conventional cells, have been pointed out for static [1] and quasi-static [2] concentrating systems, for luminescent concentrators [3] and also for flat panels. A transistor-like structure (n+-p-n +) has already been developed as a bifacial cell [4]. We have also suggested [5] and theoretically analysed [6] the use of a back surface field (BSF) structure (n+-p-p or p+-n-n +) as a bifacial cell. The purpose here is to demonstrate the feasibility of high efficiency bifacial BSF solar cells. p+-n-n bifacial cells with a 5 cm 2 area were made on float-zone silicon wafers. The resistivity of the n-type base region was 10 ~2 cm and the thickness was 260 pm. The p and n + regions were formed by open-tube diffusions using BBr3 and POC13 sources, the resulting sheet resistance being 45- 60 ~2/[:] for the p layer and 20- 30 ~2/[:] for the n layer. A TiOx antireflection (AR) coating was spun onto both sides of the cell; Ti-Pd-Ag grids were sputtered and lift-off defined also on both faces. The metallization pattern was designed for the cells to operate inside static compound parabolic mirrors with a concentration factor of 5 and a non-uniform distribution of light intensity on the cell surface. The optimum grid has ten fingers per centimetre (each finger is 50- 70 pm wide) and produces a coverage factor in the illuminated area of about 5.5%.

A. Cuevas; A. Luque; J. Eguren; J. Del Alamo


Note: This page contains sample records for the topic "ox yg enates" 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.


Scanning tunneling microscopic studies of SiO2 thin film supported metal nano-clusters  

E-Print Network (OSTI)

This dissertation is focused on understanding heterogeneous metal catalysts supported on oxides using a model catalyst system of SiO2 thin film supported metal nano-clusters. The primary technique applied to this study is scanning tunneling microscopy (STM). The most important constituent of this model catalyst system is the SiO2 thin film, as it must be thin and homogeneous enough to apply electron or ion based surface science techniques as well as STM. Ultra-thin SiO2 films were successfully synthesized on a Mo(112) single crystal. The electronic and geometric structure of the SiO2 thin film was investigated by STM combined with LEED, Auger electron spectroscopy (AES), and X-ray photoelectron spectroscopy (XPS). The relationship between defects on the SiO2 thin film and the nucleation and growth of metal nano-clusters was also investigated. By monitoring morphology changes during thermal annealing, it was found that the metal-support interaction is strongly dependent on the type of metal as well as on the defect density of the SiO2 thin film. Especially, it was found that oxygen vacancies and Si impurities play an important role in the formation of Pd-silicide. By substituting Ti atoms into the SiO2 thin film network, an atomically mixed TiO2-SiO2 thin film was synthesized. Furthermore, these Ti atoms play a role as heterogeneous defects, resulting in the creation of nucleation sites for Au nano-clusters. A marked increase in Au cluster density due to Ti defects was observed in STM. A TiO2-SiO2 thin film consisting of atomic Ti as well as TiOx islands was also synthesized by using higher amounts of Ti (17 %). More importantly, this oxide surface was found to have sinter resistant properties for Au nano-clusters, which are desirable in order to make highly active Au nano-clusters more stable under reaction conditions.

Min, Byoung Koun



Processing and Gas Barrier Behavior of Multilayer Thin Nanocomposite Films  

E-Print Network (OSTI)

Thin films with the ability to impart oxygen and other types of gas barrier are crucial to commercial packaging applications. Commodity polymers, such as polyethylene (PE), polycarbonate (PC) and polyethylene terephthalate (PET), have insufficient barrier for goods requiring long shelf life. Current gas barrier technologies like plasma-enhanced vapor deposition (PECVD) often create high barrier metal oxide films, which are prone to cracking when flexed. Bulk composites composed of polymer and impermeable nanoparticles show improved barrier, but particle aggregation limits their practical utility for applications requiring high barrier and transparency. Layer-by-layer (LbL) assemblies allow polymers and nanoparticles to be mixed with high particle loadings, creating super gas barrier thin films on substrates normally exhibiting high gas permeability. Branched polyethylenimine (PEI) and poly (acrylic acid) (PAA) were deposited using LbL to create gas barrier films with varying pH combinations. Film thickness and mass fraction of each component was controlled by their combined charge. With lower charge density (PEI at pH 10 and PAA at pH 4), PEI/PAA assemblies exhibit the best oxygen barrier relative to other pH combinations. An 8 BL PEI/PAA film, with a thickness of 451 nm, has an oxygen permeability lower than 4.8 x 10^-21 cm^3 * cm/cm^2 * s * Pa, which is comparable to a 100 nm SiOx nanocoating. Crosslinking these films with glutaraldehyde (GA), 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide methiodide (EDC) or heating forms covalent bonds between PEI and/or PAA. Oxygen transmission rates (OTR) of 8 BL films crosslinked with 0.1M GA or 0.01M EDC show the best oxygen barrier at 100% RH. Graphene oxide (GO) sheets and PEI were deposited via LbL with varying GO concentration. The resulting thin films have an average bilayer thickness from 4.3 to 5.0 nm and a GO mass fraction from 88 to 91wt%. Transmission electron microscopy and atomic force microscopy images reveal a highly-oriented nanobrick wall structure. A 10 BL PEI/GO film that is 91 nm thick, made with a 0.2 wt% GO suspension, exhibits an oxygen permeability of 2.5 x 10^-20 cm^3 * cm/cm^2 * s * Pa. Finally, the influence of deposition time on thin film assembly was examined by depositing montmorillonite (MMT) or laponite (LAP) clays paired with PEI. Film growth and microstructure suggests that smaller aspect ratio LAP clay is more dip-time dependent than MMT and larger aspect ratio MMT has better oxygen barrier. A 30 BL PEI/MMT film made with 10 second dips in PEI has the same undetectable OTR as a film with 5 minute dips (with dips in MMT held at 5 minutes in both cases), indicating LbL gas barrier can be made more quickly than initially thought. These high barrier recipes, with simple and efficient processing conditions, are good candidates for a variety of packaging applications.

Yang, You-Hao




Science Conference Proceedings (OSTI)

This paper presents a catalog of 312 X-ray selected BL Lacerate objects (XBLs), optically identified through the end of 2011. It contains the names from different surveys, equatorial coordinates, redshifts, multifrequency flux values, and luminosities for each source. In addition, the different characteristics of XBLs are statistically investigated (redshift, radio/optical/X-ray luminosities, central black hole (BH) mass, synchrotron peak frequency, broadband spectral indices, optical flux variability). Their values are collected through an extensive bibliographic and database search or calculated by us. The redshifts range from 0.031 to 0.702 with a maximum of the distribution at z = 0.223. The 1.4 GHz luminosities of XBLs log {nu}L{sub {nu}} {approx} 39-42 erg s{sup -1} while optical V and X-ray 0.1-2.4 keV bands show log {nu}L{sub {nu}} {approx} 43-46 erg s{sup -1}. The XBL hosts are elliptical galaxies with effective radii r{sub eff} = 3.2625.40 kpc and ellipticities, in = 0.040.52. Their R-band absolute magnitudes M{sub R} range from -21.11 mag to -24.86 mag with a mean value of -22.83 mag. The V - R indices of the hosts span from 0.61 to 1.52 and reveal a fourth-degree polynomial relationship with z that enables us to evaluate the redshifts of five sources whose V - R indices were determined from the observations but whose irredshifts values are either not found or not confirmed. The XBL nuclei show a wider range of 7.31 mag for M{sub R} with the highest luminosity corresponding to M{sub R} = -27.24 mag. The masses of central BHs are found in the interval log M{sub BH} = 7.39-9.30 solar masses (with distribution maximum at log M{sub BH}/M{sub Sun} = 8.30). The synchrotron peak frequencies are spread over the range log {nu}{sub peak} = 14.56-19.18 Hz with a peak of the distribution at log {nu}{sub peak} = 16.60 Hz. The broadband radio-to-optical ({alpha}{sub ro}), optical-to-X-ray ({alpha}{sub ox}), and radio-to-X-ray ({alpha}{sub rx}) spectral indices are distributed in the intervals (0.17,0.59), (0.56,1.48), and (0.41,0.75), respectively. In the optical energy range, the overall flux variability increases, on average, towards shorter wavelengths: ({Delta}m) = 1.22, 1.50, and 1.82 mag through the R, V, B bands of Johnson-Cousins system, respectively. XBLs seem be optically less variable at the intranight timescales compared to the radio-selected BL Lacs (RBLs).

Kapanadze, Bidzina Z., E-mail: bidzina_kapandaze@iliauni.edu.ge [E. Kharadze Abastumani Astrophysical Observatory at Ilia State University, 0162, Cholokashvili Avenue 3/5, Tbilisi (Georgia)




DOE Green Energy (OSTI)

Optimization of the water-gas shift (WGS) reaction system for hydrogen production for fuel cells is of particular interest to the energy industry. To this end, it is desirable to couple the WGS reaction to hydrogen separation using a semi-permeable membrane, with both processes carried out at high temperatures to improve reaction kinetics and permeation. Reduced equilibrium conversion of the WGS reaction at high temperatures is overcome by product H{sub 2} removal via the membrane. This project involves fundamental research and development of novel cerium oxide-based catalysts for the water-gas-shift reaction and the integration of these catalysts with Pd-alloy H{sub 2}-separation membranes supplying high purity hydrogen for fuel cell use. Conditions matching the requirements of coal gasifier-exit gas streams will be examined in the project. The first-year screening studies of WGS catalysts identified Cu-ceria as the most promising high-temperature shift catalyst for integration with H{sub 2}-selective membranes. Formulations containing iron oxide were found to deactivate in the presence of CO{sub 2}, and were thus eliminated from further consideration. Cu-containing ceria catalysts, on the other hand, showed high stability in CO{sub 2}-rich gases. This type gas will be present over much of the catalyst, as the membrane removes the hydrogen produced from the shift reaction. Several catalyst formulations were prepared, characterized and tested in the first year of study. Details from the catalyst development and testing work were given in our first annual technical report. Hydrogen permeation through Pd and Pd-alloy foils was investigated in a small membrane reactor constructed during the first year of the project. The effect of temperature on the hydrogen flux through pure Pd, Pd{sub 60}Cu{sub 40} and Pd{sub 75}Ag{sub 25} alloy membranes, each 25 {micro}m thick, was evaluated in the temperature range from 250 C to 500 C at upstream pressure of 4.4 atm and permeate hydrogen pressure of 1 atm. Flux decay was observed for the Pd-Cu membrane above 500 C. From 350-450 C, an average hydrogen flux value of 0.2 mol H{sub 2}/m{sup 2}/s was measured over this Pd-alloy membrane. These results are in good agreement with literature data. In this year's report, we discuss reaction rate measurements, optimization of catalyst kinetics by proper choice of dopant oxide (lanthana) in ceria, long-term stability studies, and H{sub 2} permeation data collected with unsupported flat, 10 {micro}m-thick Pd-Cu membranes over a wide temperature window and in various gas mixtures. The high-temperature shift catalyst composition was further improved, by proper selection of dopant type and amount. The formulation 10 at%Cu-Ce(30 at%La)Ox was the best; this was selected for further kinetic studies. WGS reaction rates were measured in a simulated coal-gas mixture. The stability of catalyst performance was examined in 40-hr long tests. A series of hydrogen permeation tests were conducted in a small flat-membrane reactor using the 10 m{micro}-thick Pd-Cu membranes. Small inhibitory effects of CO and CO{sub 2} were found at temperatures above 350 C, while H{sub 2}O vapor had no effect on hydrogen permeation. No carbon deposition took place during many hours of membrane operation. The reaction extent on the blank (catalyst-free) membrane was also negligible. A larger flat-membrane reactor will be used next year with the catalyst wash coated on screens close coupled with the Pd-Cu membrane.

Maria Flytzani-Stephanopoulos, PI; Jerry Meldon, Co-PI; Xiaomei Qi