National Library of Energy BETA

Sample records for initiator conformance gel

  1. Improved Mobility Control for Carbon Dioxide (CO{sub 2}) Enhanced Oil Recovery Using Silica-Polymer-Initiator (SPI) Gels

    SciTech Connect (OSTI)

    Oglesby, Kenneth

    2014-01-31

    SPI gels are multi-component silicate based gels for improving (areal and vertical) conformance in oilfield enhanced recovery operations, including water-floods and carbon dioxide (CO{sub 2}) floods, as well as other applications. SPI mixtures are like-water when pumped, but form light up to very thick, paste-like gels in contact with CO{sub 2}. When formed they are 3 to 10 times stronger than any gelled polyacrylamide gel now available, however, they are not as strong as cement or epoxy, allowing them to be washed / jetted out of the wellbore without drilling. This DOE funded project allowed 8 SPI field treatments to be performed in 6 wells (5 injection wells and 1 production well) in 2 different fields with different operators, in 2 different basins (Gulf Coast and Permian) and in 2 different rock types (sandstone and dolomite). Field A was in a central Mississippi sandstone that injected CO{sub 2} as an immiscible process. Field B was in the west Texas San Andres dolomite formation with a mature water-alternating-gas miscible CO{sub 2} flood. Field A treatments are now over 1 year old while Field B treatments have only 4 months data available under variable WAG conditions. Both fields had other operational events and well work occurring before/ during / after the treatments making definitive evaluation difficult. Laboratory static beaker and dynamic sand pack tests were performed with Ottawa sand and both fields’ core material, brines and crude oils to improve SPI chemistry, optimize SPI formulations, ensure SPI mix compatibility with field rocks and fluids, optimize SPI treatment field treatment volumes and methods, and ensure that strong gels set in the reservoir. Field quality control procedures were designed and utilized. Pre-treatment well (surface) injectivities ranged from 0.39 to 7.9 MMCF/psi. The SPI treatment volumes ranged from 20.7 cubic meters (m{sup 3}, 5460 gallons/ 130 bbls) to 691 m{sup 3} (182,658 gallons/ 4349 bbls). Various size and types of chemical/ water buffers before and after the SPI mix ensured that pre-gelled SPI mix got out into the formation before setting into a gel. SPI gels were found to be 3 to 10 times stronger than any commercially available cross-linked polyacrylamide gels based on Penetrometer and Bulk Gel Shear Testing. Because of SPI’s unique chemistry with CO{sub 2}, both laboratory and later field tests demonstrated that multiple, smaller volume SPI treatments maybe more effective than one single large SPI treatment. CO{sub 2} injectivities in injection well in both fields were reduced by 33 to 70% indicating that injected CO{sub 2} is now going into new zones. This reduction has lasted 1+ year in Field A. Oil production increased and CO{sub 2} production decreased in 5 Field A production wells, offsets to Well #1 injector, for a total of about 2,250 m{sup 3} (600,000 gallons/ 14,250 bbls) of incremental oil production- a $140 / SPI bbl return. Treated marginal production well, Field A Well #2, immediately began showing increased oil production totaling 238 m{sup 3} (63,000 gallons/ 1500 BBLs) over 1 year and an immediate 81% reduced gas-oil ratio.

  2. Initial

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

    Initial operation of a pulse-burst laser system for high-repetition-rate Thomson scattering a... W. S. Harris, 1 D. J. Den Hartog, 1,2 and N. C. Hurst 1 1 Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA 2 Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA ͑Presented 17 May 2010; received 12 May 2010; accepted 31 May 2010; published online 1 October 2010͒ A

  3. Conformable seal

    DOE Patents [OSTI]

    Neef, W.S.; Lambert, D.R.

    1982-08-10

    Sealing apparatus and method, comprising first and second surfaces or membranes, at least one of which surfaces is deformable, placed in proximity to one another. Urging means cause these surfaces to contact one another in a manner such that the deformable surface deforms to conform to the geometry of the other surface, thereby creating a seal. The seal is capable of undergoing multiple cycles of sealing and unsealing.

  4. Polymer gel molds

    DOE Patents [OSTI]

    Walls, Claudia A.; Nunn, Stephen D.; Janney, Mark A.; McMillan, April D.; Kirby, Glen H.

    2002-01-01

    A polymer gel is formed into a mold defining a preselected shape. A flowable composition may be formed into a preselected shape via contact with the polymer gel mold.

  5. Actuator device utilizing a conductive polymer gel

    DOE Patents [OSTI]

    Chinn, Douglas A.; Irvin, David J.

    2004-02-03

    A valve actuator based on a conductive polymer gel is disclosed. A nonconductive housing is provided having two separate chambers separated by a porous frit. The conductive polymer is held in one chamber and an electrolyte solution, used as a source of charged ions, is held in the second chamber. The ends of the housing a sealed with a flexible elastomer. The polymer gel is further provide with electrodes with which to apply an electrical potential across the gel in order to initiate an oxidation reaction which in turn drives anions across the porous frit and into the polymer gel, swelling the volume of the gel and simultaneously contracting the volume of the electrolyte solution. Because the two end chambers are sealed the flexible elastomer expands or contracts with the chamber volume change. By manipulating the potential across the gel the motion of the elastomer can be controlled to act as a "gate" to open or close a fluid channel and thereby control flow through that channel.

  6. 222-S LAS&T Contract No. DE-AC27-10RV15051 Conformed...

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

    DE-AC27-10RV15051 Conformed thru Initial Award i PART I - THE SCHEDULE SECTION D - PACKAGING AND MARKING TABLE OF CONTENTS D.1 PACKAGING ......

  7. Conformations of organophosphine oxides

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    De Silva, Nuwan; Zahariev, Federico; Hay, Benjamin P.; Gordon, Mark S.; Windus, Theresa L.

    2015-07-17

    The conformations of a series of organophosphine oxides, OP(CH3)2R, where R = methyl, ethyl, isopropyl, tert-butyl, vinyl, and phenyl, are predicted using the MP2/cc-pVTZ level of theory. Comparison of potential energy surfaces for rotation about P–C bonds with crystal structure data reveals a strong correlation between predicted location and energetics of minima and histograms of dihedral angle distributions observed in the solid state. In addition, the most stable conformers are those that minimize the extent of steric repulsion between adjacent rotor substituents, and the torsional barriers tend to increase with the steric bulk of the rotating alkyl group. MM3 forcemore » field parameters were adjusted to fit the MP2 results, providing a fast and accurate model for predicting organophosphine oxides shapes—an essential part of understanding the chemistry of these compounds. As a result, the predictive power of the modified MM3 model was tested against MP2/cc-pVTZ conformations for triethylphosphine oxide, OP(CH2CH3)3, and triphenylphosphine oxide, OP(Ph)3.« less

  8. Eikonalization of conformal blocks

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Fitzpatrick, A. Liam; Kaplan, Jared; Walters, Matthew T.; Wang, Junpu

    2015-09-03

    Classical field configurations such as the Coulomb potential and Schwarzschild solution are built from the t-channel exchange of many light degrees of freedom. We study the CFT analog of this phenomenon, which we term the 'eikonalization' of conformal blocks. We show that when an operator T appears in the OPE Ο(x)Ο(0), then the large spin Fock space states [TT···T]ℓ also appear in this OPE with a computable coefficient. The sum over the exchange of these Fock space states in an correlator build the classical 'T field' in the dual AdS description. In some limits the sum of all Fock spacemore » exchanges can be represented as the exponential of a single T exchange in the 4-pt correlator of O. Our results should be useful for systematizing 1/ℓ perturbation theory in general CFTs and simplifying the computation of large spin OPE coefficients. As examples we obtain the leading log ℓ dependence of Fock space conformal block coefficients, and we directly compute the OPE coefficients of the simplest ‘triple-trace’ operators.« less

  9. Gel polymer electrolytes for batteries

    DOE Patents [OSTI]

    Balsara, Nitash Pervez; Eitouni, Hany Basam; Gur, Ilan; Singh, Mohit; Hudson, William

    2014-11-18

    Nanostructured gel polymer electrolytes that have both high ionic conductivity and high mechanical strength are disclosed. The electrolytes have at least two domains--one domain contains an ionically-conductive gel polymer and the other domain contains a rigid polymer that provides structure for the electrolyte. The domains are formed by block copolymers. The first block provides a polymer matrix that may or may not be conductive on by itself, but that can soak up a liquid electrolyte, thereby making a gel. An exemplary nanostructured gel polymer electrolyte has an ionic conductivity of at least 1.times.10.sup.-4 S cm.sup.-1 at 25.degree. C.

  10. Electrically controlled polymeric gel actuators

    DOE Patents [OSTI]

    Adolf, D.B.; Shahinpoor, M.; Segalman, D.J.; Witkowski, W.R.

    1993-10-05

    Electrically controlled polymeric gel actuators or synthetic muscles are described capable of undergoing substantial expansion and contraction when subjected to changing pH environments, temperature, or solvent. The actuators employ compliant containers for the gels and their solvents. The gels employed may be cylindrical electromechanical gel fibers such as polyacrylamide fibers or a mixture of poly vinyl alcohol-polyacrylic acid arranged in a parallel aggregate and contained in an electrolytic solvent bath such as salt water. The invention includes smart, electrically activated devices exploiting this phenomenon. These devices are capable of being manipulated via active computer control as large displacement actuators for use in adaptive structure such as robots. 11 figures.

  11. Electrically controlled polymeric gel actuators

    DOE Patents [OSTI]

    Adolf, Douglas B. (Albuquerque, NM); Shahinpoor, Mohsen (Albuquerque, NM); Segalman, Daniel J. (Albuquerque, NM); Witkowski, Walter R. (Albuquerque, NM)

    1993-01-01

    Electrically controlled polymeric gel actuators or synthetic muscles capable of undergoing substantial expansion and contraction when subjected to changing pH environments, temperature, or solvent. The actuators employ compliant containers for the gels and their solvents. The gels employed may be cylindrical electromechanical gel fibers such as polyacrylamide fibers or a mixture of poly vinyl alcohol-polyacrylic acid arranged in a parallel aggregate and contained in an electrolytic solvent bath such as salt water. The invention includes smart, electrically activated devices exploiting this phenomenon. These devices are capable of being manipulated via active computer control as large displacement actuators for use in adaptive structure such as robots.

  12. Chemical Method to Improve CO{sub 2} Flooding Sweep Efficiency for Oil Recovery Using SPI-CO{sub 2} Gels

    SciTech Connect (OSTI)

    Burns, Lyle D.

    2009-04-14

    The problem in CO{sub 2} flooding lies with its higher mobility causing low conformance or sweep efficiency. This is an issue in oilfield applications where an injected fluid or gas used to mobilize and produce the oil in a marginal field has substantially higher mobility (function of viscosity and density and relative permeability) relative to the crude oil promoting fingering and early breakthrough. Conformance is particularly critical in CO{sub 2} oilfield floods where the end result is less oil recovered and substantially higher costs related to the CO{sub 2}. The SPI-CO{sub 2} (here after called “SPI”) gel system is a unique silicate based gel system that offers a technically effective solution to the conformance problem with CO{sub 2} floods. This SPI gel system remains a low viscosity fluid until an external initiator (CO{sub 2}) triggers gelation. This is a clear improvement over current technologies where the gels set up as a function of time, regardless of where it is placed in the reservoir. In those current systems, the internal initiator is included in the injected fluid for water shut off applications. In this new research effort, the CO{sub 2} is an external initiator contacted after SPI gel solution placement. This concept ensures in the proper water wet reservoir environment that the SPI gel sets up in the precise high permeability path followed by the CO{sub 2}, therefore improving sweep efficiency to a greater degree than conventional systems. In addition, the final SPI product in commercial quantities is expected to be low cost over the competing systems. This Phase I research effort provided “proof of concept” that SPI gels possess strength and may be formed in a sand pack reducing the permeability to brine and CO{sub 2} flow. This SPI technology is a natural extension of prior R & D and the Phase I effort that together show a high potential for success in a Phase II follow-on project. Carbon dioxide (CO{sub 2}) is a major by-product of hydrocarbon combustion for energy, chemical and fertilizer plants. For example, coal fired power plants emit large amounts of CO{sub 2} in order to produce electrical energy. Carbon dioxide sequestration is gaining attention as concerns mount over possible global climate change caused by rising emissions of greenhouse gases. Removing the CO{sub 2} from the energy generation process would make these plants more environmentally friendly. In addition, CO{sub 2} flooding is an attractive means to enhance oil and natural gas recovery. Capture and use of the CO{sub 2} from these plants for recycling into CO{sub 2} flooding of marginal reservoirs provides a “dual use” opportunity prior to final CO{sub 2} sequestration in the depleted reservoir. Under the right pressure, temperature and oil composition conditions, CO{sub 2} can act as a solvent, cleaning oil trapped in the microscopic pores of the reservoir rock. This miscible process greatly increases the recovery of crude oil from a reservoir compared to recovery normally seen by waterflooding. An Enhanced Oil Recovery (EOR) project that uses an industrial source of CO{sub 2} that otherwise would be vented to the atmosphere has the added environmental benefit of sequestering the greenhouse gas.

  13. Nanocrystal/sol-gel nanocomposites

    DOE Patents [OSTI]

    Petruska, Melissa A. (Los Alamos, NM); Klimov, Victor L. (Los Alamos, NM)

    2012-06-12

    The present invention is directed to solid composites including colloidal nanocrystals within a sol-gel host or matrix and to processes of forming such solid composites. The present invention is further directed to alcohol soluble colloidal nanocrystals useful in formation of sol-gel based solid composites

  14. Nanocrystal/sol-gel nanocomposites

    DOE Patents [OSTI]

    Petruska, Melissa A. (Los Alamos, NM); Klimov, Victor L. (Los Alamos, NM)

    2007-06-05

    The present invention is directed to solid composites including colloidal nanocrystals within a sol-gel host or matrix and to processes of forming such solid composites. The present invention is further directed to alcohol soluble colloidal nanocrystals useful in formation of sol-gel based solid composites.

  15. Adhesive, elastomeric gel impregnating composition

    DOE Patents [OSTI]

    Shaw, David Glenn (Tucson, AZ); Pollard, John Randolph (Tucson, AZ); Brooks, Robert Aubrey (Tijeras, NM)

    2002-01-01

    An improved capacitor roll with alternating film and foil layers is impregnated with an adhesive, elastomeric gel composition. The gel composition is a blend of a plasticizer, a polyol, a maleic anhydride that reacts with the polyol to form a polyester, and a catalyst for the reaction. The impregnant composition is introduced to the film and foil layers while still in a liquid form and then pressure is applied to aid with impregnation. The impregnant composition is cured to form the adhesive, elastomeric gel. Pressure is maintained during curing.

  16. Lattice Simulations and Infrared Conformality

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Appelquist, Thomas; Fleming, George T.; Lin, Meifeng; Neil, Ethan T.; Schaich, David A

    2011-09-01

    We examine several recent lattice-simulation data sets, asking whether they are consistent with infrared conformality. We observe, in particular, that for an SU(3) gauge theory with 12 Dirac fermions in the fundamental representation, recent simulation data can be described assuming infrared conformality. Lattice simulations include a fermion mass m which is then extrapolated to zero, and we note that this data can be fit by a small-m expansion, allowing a controlled extrapolation. We also note that the conformal hypothesis does not work well for two theories that are known or expected to be confining and chirally broken, and that itmore » does work well for another theory expected to be infrared conformal.« less

  17. HPM Conformed Contract - Hanford Site

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

    HPM Conformed Contract DOE-RL Contracts/Procurements RL Contracts & Procurements Home Prime Contracts Current Solicitations Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives HPM Conformed Contract Email Email Page | Print Print Page |Text Increase Font Size Decrease Font Size The following are links to Portable Document Format (PDF) format documents. You will need the Adobe Acrobat Reader in order to view the documents. The Adobe Acrobat Reader is available

  18. CHPRC Conformed Contract - Hanford Site

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

    DOE-RL Contracts/Procurements Prime Contracts CHPRC Conformed Contract DOE-RL Contracts/Procurements RL Contracts & Procurements Home Prime Contracts Current Solicitations Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives CHPRC Conformed Contract Email Email Page | Print Print Page |Text Increase Font Size Decrease Font Size The following are links to Portable Document Format (PDF) format documents. You will need the Adobe Acrobat Reader in order to view

  19. CSC Conformed Contract - Hanford Site

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

    DOE-RL Contracts/Procurements Prime Contracts CSC Conformed Contract DOE-RL Contracts/Procurements RL Contracts & Procurements Home Prime Contracts Current Solicitations Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives CSC Conformed Contract Email Email Page | Print Print Page |Text Increase Font Size Decrease Font Size The following are links to Portable Document Format (PDF) format documents. You will need the Adobe Acrobat Reader in order to view the

  20. Technique for converting non-conforming hexahedral-to-hexahedral interfaces into conforming interfaces

    DOE Patents [OSTI]

    Staten, Matthew L.; Shepherd, Jason F.; Ledoux, Frank; Shimada, Kenji; Merkley, Karl G.; Carbonera, Carlos

    2013-03-05

    A technique for conforming an interface between a first mesh and a second mesh is disclosed. A first interface surface in the first mesh and a second interface surface in the second mesh residing along the interface are identified. The first and second interface surfaces are initially non-conforming along the interface. Chords within the first and second interface surfaces that fall within a threshold separation distance of each other are paired. Sheets having chords that reside within the first or second interface surfaces are recursively inserted into or extracted from one or both of the first and second meshes until all remaining chords within the first interface surface are paired with corresponding chords in the second interface surface and all remaining chords within the second interface surface are paired with corresponding chords in the first interface surface.

  1. Major Conformed Contract Links | Department of Energy

    Energy Savers [EERE]

    Conformed Contract Links Major Conformed Contract Links Links to conformed copies of EM's major contracts. PDF icon Major Conformed Contract Links More Documents & Publications DOE Facility Management Contracts DOE_site_facility_mgt_contracts_Internet_Posting_3-21-11(1).pdf DOE site facility mgt contracts Internet Posting 5-2-11.xlsx

  2. Thixotropic gel for vadose zone remediation

    DOE Patents [OSTI]

    Rhia, Brian D. (Augusta, GA)

    2011-03-01

    A thixotropic gel suitable for use in subsurface bioremediation is provided along with a process of using the gel. The thixotropic gel provides a non-migrating injectable substrate that can provide below ground barrier properties. In addition, the gel components provide for a favorable environment in which certain contaminants are preferentially sequestered in the gel and subsequently remediated by either indigenous or introduced microorganisms.

  3. Thixotropic gel for vadose zone remediation

    DOE Patents [OSTI]

    Riha, Brian D.

    2012-07-03

    A thixotropic gel suitable for use in subsurface bioremediation is provided along with a process of using the gel. The thixotropic gel provides a non-migrating injectable substrate that can provide below ground barrier properties. In addition, the gel components provide for a favorable environment in which certain contaminants are preferentially sequestered in the gel and subsequently remediated by either indigenous or introduced microorganisms.

  4. Thixotropic gel for vadose zone remediation

    DOE Patents [OSTI]

    Riha, Brian D.; Looney, Brian B.

    2015-10-27

    A thixotropic gel suitable for use in subsurface bioremediation is provided along with a process of using the gel. The thixotropic gel provides a non-migrating injectable substrate that can provide below ground barrier properties. In addition, the gel components provide for a favorable environment in which certain contaminants are preferentially sequestered in the gel and subsequently remediated by either indigenous or introduced microorganisms.

  5. Copolymers For Capillary Gel Electrophoresis

    DOE Patents [OSTI]

    Liu, Changsheng (State College, PA); Li, Qingbo (State College, PA)

    2005-08-09

    This invention relates to an electrophoresis separation medium having a gel matrix of at least one random, linear copolymer comprising a primary comonomer and at least one secondary comonomer, wherein the comonomers are randomly distributed along the copolymer chain. The primary comonomer is an acrylamide or an acrylamide derivative that provides the primary physical, chemical, and sieving properties of the gel matrix. The at least one secondary comonomer imparts an inherent physical, chemical, or sieving property to the copolymer chain. The primary and secondary comonomers are present in a ratio sufficient to induce desired properties that optimize electrophoresis performance. The invention also relates to a method of separating a mixture of biological molecules using this gel matrix, a method of preparing the novel electrophoresis separation medium, and a capillary tube filled with the electrophoresis separation medium.

  6. Sol-gel derived sorbents

    DOE Patents [OSTI]

    Sigman, Michael E.; Dindal, Amy B.

    2003-11-11

    Described is a method for producing copolymerized sol-gel derived sorbent particles for the production of copolymerized sol-gel derived sorbent material. The method for producing copolymerized sol-gel derived sorbent particles comprises adding a basic solution to an aqueous metal alkoxide mixture for a pH.ltoreq.8 to hydrolyze the metal alkoxides. Then, allowing the mixture to react at room temperature for a precalculated period of time for the mixture to undergo an increased in viscosity to obtain a desired pore size and surface area. The copolymerized mixture is then added to an immiscible, nonpolar solvent that has been heated to a sufficient temperature wherein the copolymerized mixture forms a solid upon the addition. The solid is recovered from the mixture, and is ready for use in an active sampling trap or activated for use in a passive sampling trap.

  7. Sol-gel processing of energetic materials

    SciTech Connect (OSTI)

    Tillotson, T.M.; Hrubesh, L.H.; Fox, G.L.; Simpson, R.L.; Lee, R.W.; Swansiger, R.W.; Simpson, L.R.

    1997-08-18

    As part of a new materials effort, we are exploring the use of sol- gel chemistry to manufacture energetic materials. Traditional manufacturing of energetic materials involves processing of granular solids. One application is the production of detonators where powders of energetic material and a binder are typically mixed and compacted at high pressure to make pellets. Performance properties are strongly dependent on particle size distribution, surface area of its constituents, homogeneity of the mix, and void volume. The goal is to produce detonators with fast energy release rate the are insensitive to unintended initiation. In this paper, we report results of our early work in this field of research, including the preparation of detonators from xerogel molding powders and aerogels, comparing the material properties with present state-of-the-art technology.

  8. Gel polymer electrolytes for batteries (Patent) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Gel polymer electrolytes for batteries Citation Details In-Document Search Title: Gel polymer electrolytes for batteries Nanostructured gel polymer electrolytes that have both high ...

  9. Gauge natural formulation of conformal gravity

    SciTech Connect (OSTI)

    Campigotto, M.; Fatibene, L.

    2015-03-15

    We consider conformal gravity as a gauge natural theory. We study its conservation laws and superpotentials. We also consider the Mannheim and Kazanas spherically symmetric vacuum solution and discuss conserved quantities associated to conformal and diffeomorphism symmetries.

  10. Spring-loaded polymeric gel actuators

    DOE Patents [OSTI]

    Shahinpoor, M.

    1995-02-14

    Spring-loaded electrically controllable polymeric gel actuators are disclosed. The polymeric gels can be polyvinyl alcohol, polyacrylic acid, or polyacrylamide, and are contained in an electrolytic solvent bath such as water plus acetone. The action of the gel is mechanically biased, allowing the expansive and contractile forces to be optimized for specific applications. 5 figs.

  11. Spring-loaded polymeric gel actuators

    DOE Patents [OSTI]

    Shahinpoor, Mohsen (Albuquerque, NM)

    1995-01-01

    Spring-loaded electrically controllable polymeric gel actuators are disclosed. The polymeric gels can be polyvinyl alcohol, polyacrylic acid, or polyacrylamide, and are contained in an electrolytic solvent bath such as water plus acetone. The action of the gel is mechanically biased, allowing the expansive and contractile forces to be optimized for specific applications.

  12. Penser Conformed Contract (EM0003383) - Hanford Site

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

    & Procurements Home Prime Contracts Current Solicitations Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives Penser Conformed Contract...

  13. Nanocrystal/sol-gel nanocomposites

    DOE Patents [OSTI]

    Klimov, Victor L.; Petruska, Melissa A.

    2010-05-25

    The present invention is directed to a process for preparing a solid composite having colloidal nanocrystals dispersed within a sol-gel matrix, the process including admixing colloidal nanocrystals with an amphiphilic polymer including hydrophilic groups selected from the group consisting of --COOH, --OH, --SO.sub.3H, --NH.sub.2, and --PO.sub.3H.sub.2 within a solvent to form an alcohol-soluble colloidal nanocrystal-polymer complex, admixing the alcohol-soluble colloidal nanocrystal-polymer complex and a sol-gel precursor material, and, forming the solid composite from the admixture. The present invention is also directed to the resultant solid composites and to the alcohol-soluble colloidal nanocrystal-polymer complexes.

  14. Petascale Initiative

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

    Petascale Initiative Alice Koniges (third from left) led the Computational Science and ... (OSF), NERSC's operations center and was led by principal investigator Alice Koniges. ...

  15. Projects & Initiatives

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

    Expand Finance & Rates Involvement & Outreach Expand Involvement & Outreach Doing Business Expand Doing Business Skip navigation links Initiatives Columbia River Treaty Non...

  16. Automated apparatus for producing gradient gels

    DOE Patents [OSTI]

    Anderson, N.L.

    1983-11-10

    Apparatus for producing a gradient gel which serves as a standard medium for a two-dimensional analysis of proteins, the gel having a density gradient along its height formed by a variation in gel composition, with the apparatus including first and second pumping means each including a plurality of pumps on a common shaft and driven by a stepping motor capable of providing small incremental changes in pump outputs for the gel ingredients, the motors being controlled, by digital signals from a digital computer, a hollow form or cassette for receiving the gel composition, means for transferring the gel composition including a filler tube extending near the bottom of the cassette, adjustable horizontal and vertical arms for automatically removing and relocating the filler tube in the next cassette, and a digital computer programmed to automatically control the stepping motors, arm movements, and associated sensing operations involving the filling operation.

  17. Automated apparatus for producing gradient gels

    DOE Patents [OSTI]

    Anderson, Norman L. (Clarendon Hills, IL)

    1986-01-01

    Apparatus for producing a gradient gel which serves as a standard medium for a two-dimensional analysis of proteins, the gel having a density gradient along its height formed by a variation in gel composition, with the apparatus including first and second pumping means each including a plurality of pumps on a common shaft and driven by a stepping motor capable of providing small incremental changes in pump outputs for the gel ingredients, the motors being controlled, by digital signals from a digital computer, a hollow form or cassette for receiving the gel composition, means for transferring the gel composition including a filler tube extending near the bottom of the cassette, adjustable horizontal and vertical arms for automatically removing and relocating the filler tube in the next cassette, and a digital computer programmed to automatically control the stepping motors, arm movements, and associated sensing operations involving the filling operation.

  18. Microchannel gel electrophoretic separation systems and methods...

    Office of Scientific and Technical Information (OSTI)

    toxins and biomarkers (cytokines, c-reactive protein) in bodily fluids (serum, saliva, oral fluids). Further, a description of gradient gels fabrication is included, in an effort...

  19. Approaching Conformality with Ten Flavors

    SciTech Connect (OSTI)

    Appelquist, Thomas; Brower, Richard C.; Buchoff, Michael I.; Cheng, Michael; Cohen, Saul D.; Fleming, George T.; Kiskis, Joe; Lin, Meifeng; Na, Heechang; Neil, Ethan T.; Osborn, James C.

    2012-04-01

    We present first results for lattice simulations, on a single volume, of the low-lying spectrum of an SU(3) Yang-Mills gauge theory with N{sub f} = 10 light fermions in the fundamental representation. Fits to the fermion mass dependence of various observables are found to be globally consistent with the hypothesis that this theory is within or just outside the strongly-coupled edge of the conformal window, with mass anomalous dimension {gamma}* {approx} 1 over the range of scales simulated. We stress that we cannot rule out the possibility of spontaneous chiral-symmetry breaking at scales well below our infrared cutoff. We discuss important systematic effects, including finite-volume corrections, and consider directions for future improvement.

  20. SCB initiator

    DOE Patents [OSTI]

    Bickes Jr., Robert W.; Renlund, Anita M.; Stanton, Philip L.

    1994-11-01

    A detonator for high explosives initiated by mechanical impact includes a cylindrical barrel, a layer of flyer material mechanically covering the barrel at one end, and a semiconductor bridge ignitor including a pair of electrically conductive pads connected by a semiconductor bridge. The bridge is in operational contact with the layer, whereby ignition of said bridge forces a portion of the layer through the barrel to detonate the explosive. Input means are provided for igniting the semiconductor bridge ignitor.

  1. SCB initiator

    DOE Patents [OSTI]

    Bickes, Jr., Robert W. (Albuquerque, NM); Renlund, Anita M. (Albuquerque, NM); Stanton, Philip L. (Albuquerque, NM)

    1994-01-01

    A detonator for high explosives initiated by mechanical impact includes a cylindrical barrel, a layer of flyer material mechanically covering the barrel at one end, and a semiconductor bridge ignitor including a pair of electrically conductive pads connected by a semiconductor bridge. The bridge is in operational contact with the layer, whereby ignition of said bridge forces a portion of the layer through the barrel to detonate the explosive. Input means are provided for igniting the semiconductor bridge ignitor.

  2. Conformationally Constrained Macrocyclic Diporphyrin-Fullerene Artificial

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

    Photosynthetic Reaction Center Conformationally Constrained Macrocyclic Diporphyrin-Fullerene Artificial Photosynthetic Reaction Center Authors: Garg, V., Kodis, G., Chachisvilis, M., Hambourger, M., Moore, A. L., Moore, T. A., and Gust, D. Title: Conformationally Constrained Macrocyclic Diporphyrin-Fullerene Artificial Photosynthetic Reaction Center Source: Journal of the American Chemical Society Year: 2011 Volume: 133 Pages: 2944-2954 ABSTRACT: Photosynthetic reaction centers convert

  3. Sol-gel manufactured energetic materials

    DOE Patents [OSTI]

    Simpson, Randall L.; Lee, Ronald S.; Tillotson, Thomas M.; Hrubesh, Lawrence W.; Swansiger, Rosalind W.; Fox, Glenn A.

    2003-12-23

    Sol-gel chemistry is used for the preparation of energetic materials (explosives, propellants and pyrotechnics) with improved homogeneity, and/or which can be cast to near-net shape, and/or made into precision molding powders. The sol-gel method is a synthetic chemical process where reactive monomers are mixed into a solution, polymerization occurs leading to a highly cross-linked three dimensional solid network resulting in a gel. The energetic materials can be incorporated during the formation of the solution or during the gel stage of the process. The composition, pore, and primary particle sizes, gel time, surface areas, and density may be tailored and controlled by the solution chemistry. The gel is then dried using supercritical extraction to produce a highly porous low density aerogel or by controlled slow evaporation to produce a xerogel. Applying stress during the extraction phase can result in high density materials. Thus, the sol-gel method can be used for precision detonator explosive manufacturing as well as producing precision explosives, propellants, and pyrotechnics, along with high power composite energetic materials.

  4. Sol-Gel Manufactured Energetic Materials

    DOE Patents [OSTI]

    Simpson, Randall L. (Livermore, CA); Lee, Ronald S. (Livermore, CA); Tillotson, Thomas M. (Tracy, CA); Hrubesh, Lawrence W. (Pleasanton, CA); Swansiger, Rosalind W. (Livermore, CA); Fox, Glenn A. (Livermore, CA)

    2005-05-17

    Sol-gel chemistry is used for the preparation of energetic materials (explosives, propellants and pyrotechnics) with improved homogeneity, and/or which can be cast to near-net shape, and/or made into precision molding powders. The sol-gel method is a synthetic chemical process where reactive monomers are mixed into a solution, polymerization occurs leading to a highly cross-linked three dimensional solid network resulting in a gel. The energetic materials can be incorporated during the formation of the solution or during the gel stage of the process. The composition, pore, and primary particle sizes, gel time, surface areas, and density may be tailored and controlled by the solution chemistry. The gel is then dried using supercritical extraction to produce a highly porous low density aerogel or by controlled slow evaporation to produce a xerogel. Applying stress during the extraction phase can result in high density materials. Thus, the sol-gel method can be used for precision detonator explosive manufacturing as well as producing precision explosives, propellants, and pyrotechnics, along with high power composite energetic materials.

  5. Gel polymer electrolytes for batteries (Patent) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Gel polymer electrolytes for batteries Citation Details In-Document Search Title: Gel polymer electrolytes for batteries You are accessing a document from the Department of ...

  6. Clustering and Mechanics in Dense Depletion and Thermal Gels...

    Office of Scientific and Technical Information (OSTI)

    Clustering and Mechanics in Dense Depletion and Thermal Gels Citation Details In-Document Search Title: Clustering and Mechanics in Dense Depletion and Thermal Gels Authors: ...

  7. Clean Air Act General Conformity Requirements and the National

    Office of Environmental Management (EM)

    Environmental Policy Act Process | Department of Energy Clean Air Act General Conformity Requirements and the National Environmental Policy Act Process Clean Air Act General Conformity Requirements and the National Environmental Policy Act Process This DOE guidance has three parts. The first part discusses how to coordinate the conformity and NEPA processes. The second part provides greater detail on the Clean Air Act conformity requirements, the conformity review process, and the conformity

  8. Conformable apparatus in a drill string

    DOE Patents [OSTI]

    Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David S. (Lehi, UT); Fox, Joe (Spanish Fork, UT)

    2007-08-28

    An apparatus in a drill string comprises an internally upset drill pipe. The drill pipe comprises a first end, a second end, and an elongate tube intermediate the first and second ends. The elongate tube and the ends comprising a continuous an inside surface with a plurality of diameters. A conformable metal tube is disposed within the drill pipe intermediate the ends thereof and terminating adjacent to the ends of the drill pipe. The conformable metal tube substantially conforms to the continuous inside surface of the metal tube. The metal tube may comprise a non-uniform section which is expanded to conform to the inside surface of the drill pipe. The non-uniform section may comprise protrusions selected from the group consisting of convolutions, corrugations, flutes, and dimples. The non-uniform section extends generally longitudinally along the length of the tube. The metal tube may be adapted to stretch as the drill pipes stretch.

  9. Nanoporous films: Beyond conventional to the conformal

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Allendorf, Mark D.; Stavila, Vitalie

    2015-12-01

    Here, thin and continuous films of porous metal-organic frameworks can now be conformally deposited on various substrates using a vapor-phase synthesis approach that departs from conventional solution-based routes.

  10. Conformal Postoperative Radiotherapy in Patients With Positive...

    Office of Scientific and Technical Information (OSTI)

    Conclusions: Postoperative high-dose conformal RT in patients with high-risk features was associated with a low risk of biochemical relapse as well as minimal morbidity. less ...

  11. Nanoporous films: From conventional to the conformal

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Allendorf, Mark D.; Stavila, Vitalie

    2015-12-14

    Here, thin and continuous films of porous metal-organic frameworks can now be conformally deposited on various substrates using a vapor-phase synthesis approach that departs from conventional solution-based routes.

  12. Clean Air Act General Conformity Requirements and the National...

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

    Clean Air Act General Conformity Requirements and the National Environmental Policy Act Process Clean Air Act General Conformity Requirements and the National Environmental Policy...

  13. Universal Entanglement Entropy in 2D Conformal Quantum Critical...

    Office of Scientific and Technical Information (OSTI)

    Title: Universal Entanglement Entropy in 2D Conformal Quantum Critical Points We study the scaling behavior of the entanglement entropy of two dimensional conformal quantum ...

  14. Universal Entanglement Entropy in 2D Conformal Quantum Critical...

    Office of Scientific and Technical Information (OSTI)

    the properties of the conformal structure of the wave function of these quantum critical systems. The calculation of the universal term reduces to a problem in boundary conformal...

  15. Sol-gel antireflective coating on plastics

    DOE Patents [OSTI]

    Ashley, Carol S. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM)

    1990-01-01

    An antireflection film made from a reliquified sol-gel hydrolyzation, condensation polymeric reaction product of a silicon, alkoxides and/or metal alkoxides, or mixtures thereof. The film is particularly useful for coating plastics.

  16. Sol-gel antireflective coating on plastics

    DOE Patents [OSTI]

    Ashley, C.S.; Reed, S.T.

    1988-01-26

    An antireflection film made from reliquified sol-gel hydrolyzation, condensation polymeric reaction product of a silicon, alkoxides and/or metal alkoxides, or mixtures thereof. The film is particularly useful for coating plastics.

  17. Sample collection system for gel electrophoresis

    DOE Patents [OSTI]

    Olivares, Jose A.; Stark, Peter C.; Dunbar, John M.; Hill, Karen K.; Kuske, Cheryl R.; Roybal, Gustavo

    2004-09-21

    An automatic sample collection system for use with an electrophoretic slab gel system is presented. The collection system can be used with a slab gel have one or more lanes. A detector is used to detect particle bands on the slab gel within a detection zone. Such detectors may use a laser to excite fluorescently labeled particles. The fluorescent light emitted from the excited particles is transmitted to low-level light detection electronics. Upon the detection of a particle of interest within the detection zone, a syringe pump is activated, sending a stream of buffer solution across the lane of the slab gel. The buffer solution collects the sample of interest and carries it through a collection port into a sample collection vial.

  18. Johnson Controls Conformed Contract - Hanford Site

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

    DOE-RL Contracts/Procurements Prime Contracts Johnson Controls Conformed Contract DOE-RL Contracts/Procurements RL Contracts & Procurements Home Prime Contracts Current Solicitations Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives Johnson Controls Conformed Contract Email Email Page | Print Print Page |Text Increase Font Size Decrease Font Size Table of Contents - DE-AC06-97RL13184 Section A - Award Form (PDF) Section B - Supplies or Services and

  19. Annular gel reactor for chemical pattern formation

    DOE Patents [OSTI]

    Nosticzius, Zoltan (Budapest, HU); Horsthemke, Werner (Austin, TX); McCormick, William D. (Austin, TX); Swinney, Harry L. (Austin, TX); Tam, Wing Y. (Austin, TX)

    1990-01-01

    The present invention is directed to an annular gel reactor suitable for the production and observation of spatiotemporal patterns created during a chemical reaction. The apparatus comprises a vessel having at least a first and second chamber separated one from the other by an annular polymer gel layer (or other fine porous medium) which is inert to the materials to be reacted but capable of allowing diffusion of the chemicals into it.

  20. Mechanical Properties of Gels; Stress from Confined Fluids

    SciTech Connect (OSTI)

    George W. Scherer

    2009-12-01

    Abstract for Grant DE-FG02-97ER45642 Period: 1997-2002 Mechanical Properties of Gels 2002-2008 Stress from Confined Fluids Principal investigator: Prof. George W. Scherer Dept. Civil & Env. Eng./PRISM Eng. Quad. E-319 Princeton, NJ 08544 USA Recipient organization: Trustees of Princeton University 4 New South Princeton, NJ 08544 USA Abstract: The initial stage of this project, entitled Mechanical Properties of Gels, was dedicated to characterizing and explaining the properties of inorganic gels. Such materials, made by sol-gel processing, are of interest for fabrication of films, fibers, optical devices, advanced insulation and other uses. However, their poor mechanical properties are an impediment in some applications, so understanding the origin of these properties could lead to enhanced performance. Novel experimental methods were developed and applied to measure the stiffness and permeability of gels and aerogels. Numerical simulations were developed to reproduce the growth process of the gels, resulting in structures whose mechanical properties matched the measurements. The models showed that the gels are formed by the growth of relatively robust clusters of molecules that are joined by tenuous links whose compliance compromises the stiffness of the structure. Therefore, synthetic methods that enhance the links could significantly increase the rigidity of such gels. The next stage of the project focused on Stress from Confined Fluids. The first problem of interest was the enhanced thermal expansion coefficient of water that we measured in the nanometric pores of cement paste. This could have a deleterious effect on the resistance of concrete to rapid heating in fires, because the excessive thermal expansion of water in the pores of the concrete could lead to spalling and collapse. A series of experiments demonstrated that the expansion of water increases as the pore size decreases. To explain this behavior, we undertook a collaboration with Prof. Stephen Garofalini (Rutgers), who has developed the best simulations of water ever reported by use of molecular dynamics. Simulated heating of water in small pores provided quantitative agreement with experiments, and showed that the origin of the high expansion is the altered structure of water in the first two molecular layers adjacent to the pore wall. The final focus of the project was to understand the damage done by crystals growing in small pores. For example, the primary cause of damage to ancient monuments in the Mediterranean Basin is growth of salt crystals in the pores of the stone. Salt may enter stone as a result of capillary rise of groundwater, by leaching of mortar joints, deposition of marine spray, or reactions with atmospheric pollutants (such as oxides of nitrogen or sulfur). As the water evaporates, the salt solution becomes supersaturated and crystals precipitate. Stress results, because the salt usually repels the minerals in the pore walls. Our goal was to identify the factors contributing to the repulsion, so that we could develop a chemical treatment to reduce the repulsion and hence the stress. (We have recently demonstrated an effective treatment as part of a separately funded study.) In collaboration with Prof. Garofalini, molecular dynamics simulations have been done that correctly reproduce the structure of water around dissolved ions of sodium and chloride. We simulated the interaction between crystals of sodium chloride and quartz, and found that this particular system exhibits attractive forces, in agreement with experiment. The origin of the attraction is the orientation of dipolar water molecules near the surfaces of the crystals. Similar calculations now must be done in systems, such as potassium chloride and quartz, where the interaction is repulsive. This grant supported the education of two doctoral students, Hang-Shing Ma (Ph.D., 2002) and Melanie Webb (Ph.D. expected 2010), three post-doctoral researchers, Joachim Gross, Gudrun Reichenauer, and Shuangyan (Sonia) Xu, and five undergraduates (for senior theses or independent projects

  1. Microdrill Initiative - Initial Market Evaluation

    SciTech Connect (OSTI)

    Spears & Associates, Inc

    2003-07-01

    The U.S. Department of Energy (DOE) is launching a major research and development initiative to create a small, fast, inexpensive and environmentally friendly rig for drilling 5000 feet boreholes to investigate potential oil and gas reservoirs. DOE wishes to get input from petroleum industry operators, service companies and equipment suppliers on the operation and application of this coiled-tubing-based drilling unit. To that end, DOE has asked Spears & Associates, Inc. (SAI) to prepare a special state-of-the-market report and assist during a DOE-sponsored project-scoping workshop in Albuquerque near the end of April 2003. The scope of the project is four-fold: (1) Evaluate the history, status and future of demand for very small bore-hole drilling; (2) Measure the market for coiled tubing drilling and describe the state-of-the-art; (3) Identify companies and individuals who should have an interest in micro drilling and invite them to the DOE workshop; and (4) Participate in 3 concurrent workshop sessions, record and evaluate participant comments and report workshop conclusions.

  2. Duality and conformal structure (Journal Article) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Duality and conformal structure Citation Details In-Document Search Title: Duality and conformal structure In four dimensions, two metrics that are conformally related define the same Hodge dual operator on the space of two-forms. The converse, namely, that two metrics that have the same Hodge dual are conformally related, is established. This is true for metrics of arbitrary (nondegenerate) signature. For Euclidean signature a stronger result, namely, that the conformal class of the metric is

  3. Tantalum-Tungsten Oxide Thermite Composite Prepared by Sol-Gel Synthesis and Spark Plasma Sintering

    SciTech Connect (OSTI)

    Cervantes, O; Kuntz, J; Gash, A; Munir, Z

    2009-02-13

    Energetic composite powders consisting of sol-gel derived nanostructured tungsten oxide were produced with various amounts of micrometer-scale tantalum fuel metal. Such energetic composite powders were ignition tested and results show that the powders are not sensitive to friction, spark and/or impact ignition. Initial consolidation experiments, using the High Pressure Spark Plasma Sintering (HPSPS) technique, on the sol-gel derived nanostructured tungsten oxide produced samples with higher relative density than can be achieved with commercially available tungsten oxide. The sol-gel derived nanostructured tungsten oxide with immobilized tantalum fuel metal (Ta - WO{sub 3}) energetic composite was consolidated to a density of 9.17 g.cm{sup -3} or 93% relative density. In addition those parts were consolidated without significant pre-reaction of the constituents, thus the sample retained its stored chemical energy.

  4. Neutron detector using sol-gel absorber

    DOE Patents [OSTI]

    Hiller, John M. (Oak Ridge, TN); Wallace, Steven A. (Oak Ridge, TN); Dai, Sheng (Knoxville, TN)

    1999-01-01

    An neutron detector composed of fissionable material having ions of lithium, uranium, thorium, plutonium, or neptunium, contained within a glass film fabricated using a sol-gel method combined with a particle detector is disclosed. When the glass film is bombarded with neutrons, the fissionable material emits fission particles and electrons. Prompt emitting activated elements yielding a high energy electron contained within a sol-gel glass film in combination with a particle detector is also disclosed. The emissions resulting from neutron bombardment can then be detected using standard UV and particle detection methods well known in the art, such as microchannel plates, channeltrons, and silicon avalanche photodiodes.

  5. Hybrid sol-gel optical materials

    DOE Patents [OSTI]

    Zeigler, John M. (Albuquerque, NM)

    1992-01-01

    Hybrid sol-gel materials comprise silicate sols cross-linked with linear polysilane, polygermane, or poly(silane-germane). The sol-gel materials are useful as optical identifiers in tagging and verification applications and, in a different aspect, as stable, visible light transparent non-linear optical materials. Methyl or phenyl silicones, polyaryl sulfides, polyaryl ethers, and rubbery polysilanes may be used in addition to the linear polysilane. The linear polymers cross-link with the sol to form a matrix having high optical transparency, resistance to thermooxidative aging, adherence to a variety of substrates, brittleness, and a resistance to cracking during thermal cycling.

  6. Hybrid sol-gel optical materials

    DOE Patents [OSTI]

    Zeigler, John M. (Albuquerque, NM)

    1993-01-01

    Hybrid sol-gel materials comprise silicate sols cross-linked with linear polysilane, polygermane, or poly(silane-germane). The sol-gel materials are useful as optical identifiers in tagging and verification applications and, in a different aspect, as stable, visible light transparent non-linear optical materials. Methyl or phenyl silicones, polyaryl sulfides, polyaryl ethers, and rubbery polysilanes may be used in addition to the linear polysilane. The linear polymers cross-link with the sol to form a matrix having high optical transparency, resistance to thermooxidative aging, adherence to a variety of substrates, brittleness, and a resistance to cracking during thermal cycling.

  7. Hybrid sol-gel optical materials

    DOE Patents [OSTI]

    Zeigler, J.M.

    1993-04-20

    Hybrid sol-gel materials comprise silicate sols cross-linked with linear polysilane, polygermane, or poly(silane-germane). The sol-gel materials are useful as optical identifiers in tagging and verification applications and, in a different aspect, as stable, visible light transparent non-linear optical materials. Methyl or phenyl silicones, polyaryl sulfides, polyaryl ethers, and rubbery polysilanes may be used in addition to the linear polysilane. The linear polymers cross-link with the sol to form a matrix having high optical transparency, resistance to thermooxidative aging, adherence to a variety of substrates, brittleness, and a resistance to cracking during thermal cycling.

  8. Gel bead composition for metal adsorption

    DOE Patents [OSTI]

    Scott, Charles D. (Oak Ridge, TN); Woodward, Charlene A. (Oak Ridge, TN); Byers, Charles H. (Oak Ridge, TN)

    1991-01-01

    The invention is a gel bead comprising propylene glycol alginate and bone gelatin and is capable of removing metals such as Sr and Cs from solution without adding other adsorbents. The invention could have application to the nuclear industry's waste removal activities.

  9. Gel bead composition for metal adsorption

    DOE Patents [OSTI]

    Scott, Charles D. (Oak Ridge, TN); Woodward, Charlene A. (Oak Ridge, TN); Byers, Charles H. (Oak Ridge, TN)

    1990-01-01

    The invention is a gel bead comprising propylene glycol alginate and bone gelatin and is capable of removing metals such as Sr and Cs from solution without adding other adsorbents. The invention could have application to the nuclear industry's waste removal activities.

  10. Black hole temperature: Minimal coupling vs conformal coupling

    SciTech Connect (OSTI)

    Fazel, Mohamadreza; Mirza, Behrouz; Mansoori, Seyed Ali Hosseini

    2014-05-15

    In this article, we discuss the propagation of scalar fields in conformally transformed spacetimes with either minimal or conformal coupling. The conformally coupled equation of motion is transformed into a one-dimensional Schrödinger-like equation with an invariant potential under conformal transformation. In a second stage, we argue that calculations based on conformal coupling yield the same Hawking temperature as those based on minimal coupling. Finally, it is conjectured that the quasi normal modes of black holes are invariant under conformal transformation.

  11. Encapsulation of nanoclusters in dried gel materials via an inverse micelle/sol gel synthesis

    DOE Patents [OSTI]

    Martino, Anthony; Yamanaka, Stacey A.; Kawola, Jeffrey S.; Showalter, Steven K.; Loy, Douglas A.

    1998-01-01

    A dried gel material sterically entrapping nanoclusters of a catalytically active material and a process to make the material via an inverse micelle/sol-gel synthesis. A surfactant is mixed with an apolar solvent to form an inverse micelle solution. A salt of a catalytically active material, such as gold chloride, is added along with a silica gel precursor to the solution to form a mixture. To the mixture are then added a reducing agent for the purpose of reducing the gold in the gold chloride to atomic gold to form the nanoclusters and a condensing agent to form the gel which sterically entraps the nanoclusters. The nanoclusters are normally in the average size range of from 5-10 nm in diameter with a monodisperse size distribution.

  12. Encapsulation of nanoclusters in dried gel materials via an inverse micelle/sol gel synthesis

    DOE Patents [OSTI]

    Martino, A.; Yamanaka, S.A.; Kawola, J.S.; Showalter, S.K.; Loy, D.A.

    1998-09-29

    A dried gel material sterically entrapping nanoclusters of a catalytically active material and a process to make the material via an inverse micelle/sol-gel synthesis are disclosed. A surfactant is mixed with an apolar solvent to form an inverse micelle solution. A salt of a catalytically active material, such as gold chloride, is added along with a silica gel precursor to the solution to form a mixture. To the mixture are then added a reducing agent for the purpose of reducing the gold in the gold chloride to atomic gold to form the nanoclusters and a condensing agent to form the gel which sterically entraps the nanoclusters. The nanoclusters are normally in the average size range of from 5--10 nm in diameter with a monodisperse size distribution. 1 fig.

  13. On the Roles of Substrate Binding and Hinge Unfolding in Conformational Changes of Adenylate Kinase

    SciTech Connect (OSTI)

    Brokaw, Jason B.; Chu, Jhih-wei

    2010-11-17

    We characterized the conformational change of adenylate kinase (AK) between open and closed forms by conducting five all-atom molecular-dynamics simulations, each of 100 ns duration. Different initial structures and substrate binding configurations were used to probe the pathways of AK conformational change in explicit solvent, and no bias potential was applied. A complete closed-to-open and a partial open-to-closed transition were observed, demonstrating the direct impact of substrate-mediated interactions on shifting protein conformation. The sampled configurations suggest two possible pathways for connecting the open and closed structures of AK, affirming the prediction made based on available x-ray structures and earlier works of coarse-grained modeling. The trajectories of the all-atom molecular-dynamics simulations revealed the complexity of protein dynamics and the coupling between different domains during conformational change. Calculations of solvent density and density fluctuations surrounding AK did not show prominent variation during the transition between closed and open forms. Finally, we characterized the effects of local unfolding of an important hinge near Pro177 on the closed-to-open transition of AK and identified a novel mechanism by which hinge unfolding modulates protein conformational change. The local unfolding of Pro177 hinge induces alternative tertiary contacts that stabilize the closed structure and prevent the opening transition.

  14. Metal-doped organic gels and method thereof

    DOE Patents [OSTI]

    Satcher, Jr., Joe H.; Baumann, Theodore F.

    2003-09-02

    Disclosed herein is a sol-gel polymerization process for synthesizing metal-doped organic gels. The process polymerizes metal salts of hydroxylated benzenes or hydroxylated benzene derivatives with alkyl or aryl aldehydes to form metal-doped, wet, organic gels. The gels can then be dried by supercritical solvent extraction to form metal-doped aerogels or by evaporation to form metal-doped xerogels. The aerogels and xerogels can then be pyrolyzed.

  15. Metal-doped organic gels and method thereof

    DOE Patents [OSTI]

    Satcher, Jr., Joe H.; Baumann, Theodore F.

    2007-10-23

    Disclosed herein is a sol-gel polymerization process for synthesizing metal-doped organic gels. The process polymerizes metal salts of hydroxylated benzenes or hydroxylated benzene derivatives with alkyl or aryl aldehydes to form metal-doped, wet, organic gels. The gels can then be dried by supercritical solvent extraction to form metal-doped aerogels or by evaporation to form metal-doped xerogels. The aerogels and xerogels can then be pyrolyzed.

  16. Stable and responsive fluorescent carbon nanotube silica gels (Conference)

    Office of Scientific and Technical Information (OSTI)

    | SciTech Connect Conference: Stable and responsive fluorescent carbon nanotube silica gels Citation Details In-Document Search Title: Stable and responsive fluorescent carbon nanotube silica gels Here we report a general route to prepare silica nanocomposite gels doped with fluorescent single walled carbon nanotubes (SWNT). We show that tetramethylorthosilicate (TMOS) vapors can be used to gel an aqueous suspension of surfactant-wrapped SWNT while maintaining fluorescence from the

  17. Gel-forming reagents and uses thereof for preparing microarrays

    DOE Patents [OSTI]

    Golova, Julia (Burr Ridge, IL); Chernov, Boris (Burr Ridge, IL); Perov, Alexander (Woodridge, IL)

    2010-11-09

    New gel-forming reagents including monomers and cross-linkers, which can be applied to gel-drop microarray manufacturing by using co-polymerization approaches are disclosed. Compositions for the preparation of co-polymerization mixtures with new gel-forming monomers and cross-linker reagents are described herein. New co-polymerization compositions and cross-linkers with variable length linker groups between unsaturated C.dbd.C bonds that participate in the formation of gel networks are disclosed.

  18. Formulation and method for preparing gels comprising hydrous aluminum oxide

    SciTech Connect (OSTI)

    Collins, Jack L.

    2014-06-17

    Formulations useful for preparing hydrous aluminum oxide gels contain a metal salt including aluminum, an organic base, and a complexing agent. Methods for preparing gels containing hydrous aluminum oxide include heating a formulation to a temperature sufficient to induce gel formation, where the formulation contains a metal salt including aluminum, an organic base, and a complexing agent.

  19. Formulation and method for preparing gels comprising hydrous cerium oxide

    DOE Patents [OSTI]

    Collins, Jack L; Chi, Anthony

    2013-05-07

    Formulations useful for preparing hydrous cerium oxide gels contain a metal salt including cerium, an organic base, and a complexing agent. Methods for preparing gels containing hydrous cerium oxide include heating a formulation to a temperature sufficient to induce gel formation, where the formulation contains a metal salt including cerium, an organic base, and a complexing agent.

  20. Formulation and method for preparing gels comprising hydrous hafnium oxide

    DOE Patents [OSTI]

    Collins, Jack L; Hunt, Rodney D; Montgomery, Frederick C

    2013-08-06

    Formulations useful for preparing hydrous hafnium oxide gels contain a metal salt including hafnium, an acid, an organic base, and a complexing agent. Methods for preparing gels containing hydrous hafnium oxide include heating a formulation to a temperature sufficient to induce gel formation, where the formulation contains a metal salt including hafnium, an acid, an organic base, and a complexing agent.

  1. Metastable supersymmetry breaking vacua from conformal dynamics (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Metastable supersymmetry breaking vacua from conformal dynamics Citation Details In-Document Search Title: Metastable supersymmetry breaking vacua from conformal dynamics We study the scenario that conformal dynamics leads to metastable supersymmetry breaking vacua. At a high energy scale, the superpotential is not R-symmetric and has a supersymmetric minimum. However, conformal dynamics suppresses several operators along renormalization group flow toward the

  2. Metastable supersymmetry breaking vacua from conformal dynamics (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Metastable supersymmetry breaking vacua from conformal dynamics Citation Details In-Document Search Title: Metastable supersymmetry breaking vacua from conformal dynamics We study the scenario that conformal dynamics leads to metastable supersymmetry breaking vacua. At a high energy scale, the superpotential is not R-symmetric, and has a supersymmetric minimum. However, conformal dynamics suppresses several operators along renormalization group flow toward the

  3. Joint Environmental Management System (EMS) Declaration of Conformance...

    Energy Savers [EERE]

    Services Environmental Management System Joint Environmental Management System (EMS) Declaration of Conformance Joint Environmental Management System (EMS) Declaration of...

  4. conformal decomposition finite-element method

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

    conformal decomposition finite-element method - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste

  5. Sealing apparatus utilizing a conformable member

    DOE Patents [OSTI]

    Neef, William S. (Livermore, CA); Lambert, Donald R. (Livermore, CA)

    1988-01-01

    Sealing apparatus and method, comprising first and second surfaces or membranes, at least one of which surfaces is deformable, placed in proximity to one another. Urging means cause these surfaces to contact one another in a manner such that the deformable surface "deforms" to conform to the geometry of the other surface, thereby creating a seal. The seal is capable of undergoing multiple cycles of sealing and unsealing.

  6. Sol-gel method for encapsulating molecules

    DOE Patents [OSTI]

    Brinker, C. Jeffrey (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Bhatia, Rimple (Albuquerque, NM); Singh, Anup K. (San Francisco, CA)

    2002-01-01

    A method for encapsulating organic molecules, and in particular, biomolecules using sol-gel chemistry. A silica sol is prepared from an aqueous alkali metal silicate solution, such as a mixture of silicon dioxide and sodium or potassium oxide in water. The pH is adjusted to a suitably low value to stabilize the sol by minimizing the rate of siloxane condensation, thereby allowing storage stability of the sol prior to gelation. The organic molecules, generally in solution, is then added with the organic molecules being encapsulated in the sol matrix. After aging, either a thin film can be prepared or a gel can be formed with the encapsulated molecules. Depending upon the acid used, pH, and other processing conditions, the gelation time can be from one minute up to several days. In the method of the present invention, no alcohols are generated as by-products during the sol-gel and encapsulation steps. The organic molecules can be added at any desired pH value, where the pH value is generally chosen to achieve the desired reactivity of the organic molecules. The method of the present invention thereby presents a sufficiently mild encapsulation method to retain a significant portion of the activity of the biomolecules, compared with the activity of the biomolecules in free solution.

  7. Gel Electrophoresis of Gold-DNA Nanoconjugates

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Pellegrino, T.; Sperling, R. A.; Alivisatos, A. P.; Parak, W. J.

    2007-01-01

    Gold-DNA conjugates were investigated in detail by a comprehensive gel electrophoresis study based on 1200 gels. A controlled number of single-stranded DNA of different length was attached specifically via thiol-Au bonds to phosphine-stabilized colloidal gold nanoparticles. Alternatively, the surface of the gold particles was saturated with single stranded DNA of different length either specifically via thiol-Au bonds or by nonspecific adsorption. From the experimentally determined electrophoretic mobilities, estimates for the effective diameters of the gold-DNA conjugates were derived by applying two different data treatment approaches. The first method is based on making a calibration curve for the relation between effectivemore » diameters and mobilities with gold nanoparticles of known diameter. The second method is based on Ferguson analysis which uses gold nanoparticles of known diameter as reference database. Our study shows that effective diameters derived from gel electrophoresis measurements are affected with a high error bar as the determined values strongly depend on the method of evaluation, though relative changes in size upon binding of molecules can be detected with high precision. Furthermore, in this study, the specific attachment of DNA via gold-thiol bonds to Au nanoparticles is compared to nonspecific adsorption of DNA. Also, the maximum number of DNA molecules that can be bound per particle was determined.« less

  8. Hybrid slab-microchannel gel electrophoresis system

    DOE Patents [OSTI]

    Balch, Joseph W. (Livermore, CA); Carrano, Anthony V. (Livermore, CA); Davidson, James C. (Livermore, CA); Koo, Jackson C. (San Ramon, CA)

    1998-01-01

    A hybrid slab-microchannel gel electrophoresis system. The hybrid system permits the fabrication of isolated microchannels for biomolecule separations without imposing the constraint of a totally sealed system. The hybrid system is reusable and ultimately much simpler and less costly to manufacture than a closed channel plate system. The hybrid system incorporates a microslab portion of the separation medium above the microchannels, thus at least substantially reducing the possibility of non-uniform field distribution and breakdown due to uncontrollable leakage. A microslab of the sieving matrix is built into the system by using plastic spacer materials and is used to uniformly couple the top plate with the bottom microchannel plate.

  9. WCI - World Consensus Initiative

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

    World Consensus Initiative 2005 Workshop Recap WCI 2004 Website WCI Book Contributed Papers

  10. Microchannel gel electrophoretic separation systems and methods for

    Office of Scientific and Technical Information (OSTI)

    preparing and using (Patent) | SciTech Connect Microchannel gel electrophoretic separation systems and methods for preparing and using Citation Details In-Document Search Title: Microchannel gel electrophoretic separation systems and methods for preparing and using A micro-analytical platform for performing electrophoresis-based immunoassays was developed by integrating photopolymerized cross-linked polyacrylamide gels within a microfluidic device. The microfluidic immunoassays are performed

  11. PCR amplification on microarrays of gel immobilized oligonucleotides

    DOE Patents [OSTI]

    Strizhkov, Boris; Tillib, Sergei; Mikhailovich, Vladimir; Mirzabekov, Andrei

    2003-11-04

    The invention relates two general methods for performing PCR amplification, combined with the detection and analysis of the PCR products on a microchip. In the first method, the amplification occurs both outside and within a plurality of gel pads on a microchip, with at least one oligonucleotide primer immobilized in a gel pad. In the second method, PCR amplification also takes place within gel pads on a microchip, but the pads are surrounded by a hydrophobic liquid such as that which separates the individual gel pads into environments which resemble micro-miniaturized test tubes.

  12. Neutron Detection Using an Embedded Sol-Gel Neutron Absorber...

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

    Materials Find More Like This Return to Search Neutron Detection Using an Embedded Sol-Gel Neutron Absorber Oak Ridge National Laboratory Contact ORNL About This Technology...

  13. Nanocrystal / Sol-Gel Nanocomposites - Energy Innovation Portal

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

    Advanced Materials Advanced Materials Find More Like This Return to Search Nanocrystal Sol-Gel Nanocomposites Los Alamos National Laboratory Contact LANL About This Technology...

  14. Averaged null energy condition violation in a conformally flat spacetime

    SciTech Connect (OSTI)

    Urban, Douglas; Olum, Ken D.

    2010-01-15

    We show that the averaged null energy condition can be violated by a conformally coupled scalar field in a conformally flat spacetime in 3+1 dimensions. The violation is dependent on the quantum state and can be made as large as desired. It does not arise from the presence of anomalies, although anomalous violations are also possible. Since all geodesics in conformally flat spacetimes are achronal, the achronal averaged null energy condition is likewise violated.

  15. Study of polymer molecules and conformations with a nanopore

    DOE Patents [OSTI]

    Golovchenko, Jene A; Li, Jiali; Stein, Derek; Gershow, Marc H

    2015-03-03

    The invention features methods for evaluating the conformation of a polymer, for example, for determining the conformational distribution of a plurality of polymers and to detect binding or denaturation events. The methods employ a nanopore which the polymer, e.g., a nucleic acid, traverses. As the polymer traverses the nanopore, measurements of transport properties of the nanopore yield data on the conformation of the polymer.

  16. Study of polymer molecules and conformations with a nanopore

    DOE Patents [OSTI]

    Golovchenko, Jene A.; Li, Jiali; Stein, Derek; Gershow, Marc H.

    2013-03-12

    The invention features methods for evaluating the conformation of a polymer, for example, for determining the conformational distribution of a plurality of polymers and to detect binding or denaturation events. The methods employ a nanopore which the polymer, e.g., a nucleic acid, traverses. As the polymer traverses the nanopore, measurements of transport properties of the nanopore yield data on the conformation of the polymer.

  17. Study of polymer molecules and conformations with a nanopore

    DOE Patents [OSTI]

    Golovchenko, Jene A.; Li, Jiali; Stein, Derek; Gershow, Marc H.

    2010-12-07

    The invention features methods for evaluating the conformation of a polymer, for example, for determining the conformational distribution of a plurality of polymers and to detect binding or denaturation events. The methods employ a nanopore which the polymer, e.g., a nucleic acid, traverses. As the polymer traverses the nanopore, measurements of transport properties of the nanopore yield data on the conformation of the polymer.

  18. Development of a removable conformal coating through the synthetic

    Office of Scientific and Technical Information (OSTI)

    incorporation of Diels-Adler thermally reversible adducts into an epoxy resin. (Conference) | SciTech Connect Conference: Development of a removable conformal coating through the synthetic incorporation of Diels-Adler thermally reversible adducts into an epoxy resin. Citation Details In-Document Search Title: Development of a removable conformal coating through the synthetic incorporation of Diels-Adler thermally reversible adducts into an epoxy resin. An epoxy-based conformal coating with a

  19. Boundary conformal field theory and tunneling of edge quasiparticles in

    Office of Scientific and Technical Information (OSTI)

    non-Abelian topological states (Journal Article) | SciTech Connect Boundary conformal field theory and tunneling of edge quasiparticles in non-Abelian topological states Citation Details In-Document Search Title: Boundary conformal field theory and tunneling of edge quasiparticles in non-Abelian topological states We explain how (perturbed) boundary conformal field theory allows us to understand the tunneling of edge quasiparticles in non-Abelian topological states. The coupling between a

  20. Universal Entanglement Entropy in 2D Conformal Quantum Critical Points

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Universal Entanglement Entropy in 2D Conformal Quantum Critical Points Citation Details In-Document Search Title: Universal Entanglement Entropy in 2D Conformal Quantum Critical Points We study the scaling behavior of the entanglement entropy of two dimensional conformal quantum critical systems, i.e. systems with scale invariant wave functions. They include two-dimensional generalized quantum dimer models on bipartite lattices and quantum loop models, as

  1. Universal entanglement entropy in two-dimensional conformal quantum

    Office of Scientific and Technical Information (OSTI)

    critical points (Journal Article) | SciTech Connect Universal entanglement entropy in two-dimensional conformal quantum critical points Citation Details In-Document Search Title: Universal entanglement entropy in two-dimensional conformal quantum critical points We study the scaling behavior of the entanglement entropy of two-dimensional conformal quantum critical systems, i.e., systems with scale-invariant wave functions. They include two-dimensional generalized quantum dimer models on

  2. MAJOR CONFORMED CONTRACTS LINKS Site/Project Contract Link Idaho

    Office of Environmental Management (EM)

    MAJOR CONFORMED CONTRACTS LINKS SiteProject Contract Link Idaho Idaho Cleanup Project http:www.id.doe.govdoeidICPContractICPContract.htm Advance Mixed Waste Treatment http:...

  3. Warped Conformal Field Theory (Journal Article) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Search Title: Warped Conformal Field Theory Authors: Detournay, Stephane ; Harvard U. ; Hartman, Thomas ; Princeton, Inst. Advanced Study ; Hofman, Diego M. ; Harvard...

  4. Reversible ratchet effects for vortices in conformal pinning...

    Office of Scientific and Technical Information (OSTI)

    Reversible ratchet effects for vortices in conformal pinning arrays Citation Details In-Document Search This content will become publicly available on May 3, 2016 Title: Reversible...

  5. Conformal chemically resistant coatings for microflow devices

    DOE Patents [OSTI]

    Folta, James A.; Zdeblick, Mark

    2003-05-13

    A process for coating the inside surfaces of silicon microflow devices, such as electrophoresis microchannels, with a low-stress, conformal (uniform) silicon nitride film which has the ability to uniformly coat deeply-recessed cavities with, for example, aspect ratios of up to 40:1 or higher. The silicon nitride coating allows extended exposure to caustic solutions. The coating enables a microflow device fabricated in silicon to be resistant to all classes of chemicals: acids, bases, and solvents. The process involves low-pressure (vacuum) chemical vapor deposition. The ultra-low-stress silicon nitride deposition process allows 1-2 .mu.m thick films without cracks, and so enables extended chemical protection of a silicon microflow device against caustics for up to 1 year. Tests have demonstrated the resistance of the films to caustic solutions at both ambient and elevated temperatures to 65.degree. C.

  6. Conformal coating of highly structured surfaces

    DOE Patents [OSTI]

    Ginley, David S.; Perkins, John; Berry, Joseph; Gennett, Thomas

    2012-12-11

    Method of applying a conformal coating to a highly structured substrate and devices made by the disclosed methods are disclosed. An example method includes the deposition of a substantially contiguous layer of a material upon a highly structured surface within a deposition process chamber. The highly structured surface may be associated with a substrate or another layer deposited on a substrate. The method includes depositing a material having an amorphous structure on the highly structured surface at a deposition pressure of equal to or less than about 3 mTorr. The method may also include removing a portion of the amorphous material deposited on selected surfaces and depositing additional amorphous material on the highly structured surface.

  7. Apparatus for the production of gel beads containing a biocatalyst

    DOE Patents [OSTI]

    Scott, Charles D. (Oak Ridge, TN); Scott, Timothy C. (Knoxville, TN); Davison, Brian H. (Knoxville, TN)

    1998-01-01

    An apparatus for the large-scale and continuous production of gel beads containing a biocatalyst. The apparatus is a columnar system based on the chemical cross-linking of hydrocolloidal gels that contain and immobilize a biocatalyst, the biocatalyst being a microorganism or an enzyme. Hydrocolloidal gels, such as alginate, carrageenan, and a mixture of bone gelatin and modified alginate, provide immobilization matrices that can be used to entrap and retain the biocatalyst while allowing effective contact with substrates and release of products. Such immobilized biocatalysts are generally formulated into small spheres or beads that have high concentrations of the biocatalyst within the gel matrix. The columnar system includes a gel dispersion nozzle submerged in a heated non-interacting liquid, typically an organic liquid, that is immiscible with water to allow efficient formation of spherical gel droplets, the non-interacting liquid having a specific gravity that is less than water so that the gel droplets will fall through the liquid by the force of gravity. The heated non-interacting liquid is in direct contact with a chilled upflowing non-interacting liquid that will provide sufficient residence time for the gel droplets as they fall through the liquid so that they will be cooled below the gelling temperature and form solid spheres. The upflowing non-interacting liquid is in direct contact with an upflowing temperature-controlled aqueous solution containing the necessary chemicals for cross-linking or fixing of the gel beads to add the necessary stability. The flow rates of the two liquid streams can be varied to control the proper residence time in each liquid section to accommodate the production of gel beads of differing settling velocities. A valve is provided for continuous removal of the stabilized gel beads from the bottom of the column.

  8. Apparatus for the production of gel beads containing a biocatalyst

    DOE Patents [OSTI]

    Scott, C.D.; Scott, T.C.; Davison, B.H.

    1998-03-19

    An apparatus is described for the large-scale and continuous production of gel beads containing a biocatalyst. The apparatus is a columnar system based on the chemical cross-linking of hydrocolloidal gels that contain and immobilize a biocatalyst, the biocatalyst being a microorganism or an enzyme. Hydrocolloidal gels, such as alginate, carrageenan, and a mixture of bone gelatin and modified alginate, provide immobilization matrices that can be used to entrap and retain the biocatalyst while allowing effective contact with substrates and release of products. Such immobilized biocatalysts are generally formulated into small spheres or beads that have high concentrations of the biocatalyst within the gel matrix. The columnar system includes a gel dispersion nozzle submerged in a heated non-interacting liquid, typically an organic liquid, that is immiscible with water to allow efficient formation of spherical gel droplets, the non-interacting liquid having a specific gravity that is less than water so that the gel droplets will fall through the liquid by the force of gravity. The heated non-interacting liquid is in direct contact with a chilled upflowing non-interacting liquid that will provide sufficient residence time for the gel droplets as they fall through the liquid so that they will be cooled below the gelling temperature and form solid spheres. The upflowing non-interacting liquid is in direct contact with an upflowing temperature-controlled aqueous solution containing the necessary chemicals for cross-linking or fixing of the gel beads to add the necessary stability. The flow rates of the two liquid streams can be varied to control the proper residence time in each liquid section to accommodate the production of gel beads of differing settling velocities. A valve is provided for continuous removal of the stabilized gel beads from the bottom of the column. 1 fig.

  9. Hybrid slab-microchannel gel electrophoresis system

    DOE Patents [OSTI]

    Balch, J.W.; Carrano, A.V.; Davidson, J.C.; Koo, J.C.

    1998-05-05

    A hybrid slab-microchannel gel electrophoresis system is described. The hybrid system permits the fabrication of isolated microchannels for biomolecule separations without imposing the constraint of a totally sealed system. The hybrid system is reusable and ultimately much simpler and less costly to manufacture than a closed channel plate system. The hybrid system incorporates a microslab portion of the separation medium above the microchannels, thus at least substantially reducing the possibility of non-uniform field distribution and breakdown due to uncontrollable leakage. A microslab of the sieving matrix is built into the system by using plastic spacer materials and is used to uniformly couple the top plate with the bottom microchannel plate. 4 figs.

  10. Sol-gel coatings for optoelectronic devices

    SciTech Connect (OSTI)

    Avellaneda, C.O.; Macedo, M.A.; Florentino, A.O.; Aegerter, M.A. [Univ. of Sao Paulo, Sao Carlos (Brazil). Inst. de Fisica e Quimica

    1994-12-31

    Nb{sub 2}O{sub 5} prepared by a sol-gel process in form of coatings and aerogels are new materials which present interesting properties: (a) The coatings present electrochromic properties and exhibit a blue coloration under Li{sup +} insertion with 100% reversible variation of the optical transmission in the visible and near infrared range between 80% and 200% and have a high chemical stability (tested up to 2,000 cycles). (b) They are semiconductor and present a photoelectric effect when illuminating in the UV region ({lambda} < 360 nm). These films are therefore very promising to be used in electrochromic devices, as electrodes for photoelectrochemical purpose and the development of nanocrystalline solar cell. (c) When prepared in aerogel form, the high BET surface area of the powders is a promising asset to use these new materials for catalytic purposes for air pollution control.

  11. Sol-gel synthesis of protoenstatite

    SciTech Connect (OSTI)

    Jones, S.A.; Burlitch, J.M.

    1994-12-31

    Protoenstatite, a high-temperature polymorph of enstatite (MgSiO{sub 3}), is generally not stable at room temperature, and is difficult to synthesize. Using a recently developed, hydrogen peroxide assisted, sol-gel synthesis, protoenstatite was synthesized in a form that was stable at room temperature. Its crystallization was strongly dependent on processing conditions, particularly on the manner in which the xerogel was formed and fired. Xerogels prepared by evaporation, spray-drying and freeze-drying were compared by XRD, HTXRD, BET, TG/DTA, and {sup 29}Si NMR methods. When samples were prepared by evaporation or spray-drying, the result was a mixture of polymorphs. Only the freeze-dried precursor yielded protoenstatite at a lower temperature and within a shorter time than any previously reported.

  12. Keck Futures Initiative

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

    National Academies Keck Futures Initiative Complex Systems Conference, November 12 - 15, 2008 Challa Kumar(second from left) was invited to attend 1st National Academies Keck Futures Initiative Complex Systems Conference

  13. Ohio Fuel Cell Initiative

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

    Top 5 Fuel Cell States: Why Local Policies Mean Green Growth Jun 21 st , 2011 2 * Ohio Fuel Cell Initiative * Ohio Fuel Cell Coalition * Accomplishments * Ohio Successes Discussion Areas 3 Ohio's Fuel Cell Initiative * Announced on 5/9/02 * Part of Ohio Third Frontier Initiative * $85 million investment to date * Core focus areas: 1) Expand the state's research capabilities; 2) Participate in demonstration projects; and 3) Expand the fuel cell industry in Ohio 4 OHIO'S FUEL CELL INITIATIVE

  14. Wind Integration Initiatives

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

    Expand Projects & Initiatives Finance & Rates Expand Finance & Rates Involvement & Outreach Expand Involvement & Outreach Doing Business Expand Doing Business...

  15. APEC Smart Grid Initiative

    SciTech Connect (OSTI)

    Bloyd, Cary N.

    2012-03-01

    This brief paper describes the activities of the Asia Pacific Economic Cooperation (APEC) Smart Grid Initiative (ASGI) which is being led by the U.S. and developed by the APEC Energy Working Group. In the paper, I describe the origin of the initiative and briefly mention the four major elements of the initiative along with existing APEC projects which support it.

  16. Carbon Capture Simulation Initiative

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

    Capture Simulation Initiative Fact sheet More Information Research Team Members Key Contacts Carbon Capture Simulation Initiative The Carbon Capture Simulation Initiative (CCSI) is a partnership among national laboratories, industry, and academic institutions that is developing, demonstrating and deploying state-of-the-art computational modeling and simulation tools to accelerate the development of carbon capture technologies from discovery to development, demonstration, and ultimately the

  17. Encapsulation of biomaterials in porous glass-like matrices prepared via an aqueous colloidal sol-gel process

    DOE Patents [OSTI]

    Liu, Dean-Mo (Richmond, CA); Chen, I-Wei (Swarthmore, PA)

    2001-01-01

    The present invention provides a process for the encapsulation of biologically important proteins into transparent, porous silica matrices by an alcohol-free, aqueous, colloidal sol-gel process, and to the biological materials encapsulated thereby. The process is exemplified by studies involving encapsulated cytochrome c, catalase, myoglobin, and hemoglobin, although non-proteinaceous biomaterials, such as active DNA or RNA fragments, cells or even tissues, may also be encapsulated in accordance with the present methods. Conformation, and hence activity of the biomaterial, is successfully retained after encapsulation as demonstrated by optical characterization of the molecules, even after long-term storage. The retained conformation of the biomaterial is strongly correlated to both the rate of gelation and the subsequent drying speed of the encapsulatng matrix. Moreover, in accordance with this process, gelation is accelerated by the use of a higher colloidal solid concentration and a lower synthesis pH than conventional methods, thereby enhancing structural stability and retained conformation of the biomaterials. Thus, the invention also provides a remarkable improvement in retaining the biological activity of the encapsulated biomaterial, as compared with those involved in conventional alkoxide-based processes. It further provides new methods for the quantitative and qualitative detection of test substances that are reactive to, or catalyzed by, the active, encapsulated biological materials.

  18. Method for preparing hydrous zirconium oxide gels and spherules

    DOE Patents [OSTI]

    Collins, Jack L.

    2003-08-05

    Methods for preparing hydrous zirconium oxide spherules, hydrous zirconium oxide gels such as gel slabs, films, capillary and electrophoresis gels, zirconium monohydrogen phosphate spherules, hydrous zirconium oxide spherules having suspendable particles homogeneously embedded within to form a composite sorbent, zirconium monohydrogen phosphate spherules having suspendable particles of at least one different sorbent homogeneously embedded within to form a composite sorbent having a desired crystallinity, zirconium oxide spherules having suspendable particles homogeneously embedded within to form a composite, hydrous zirconium oxide fiber materials, zirconium oxide fiber materials, hydrous zirconium oxide fiber materials having suspendable particles homogeneously embedded within to form a composite, zirconium oxide fiber materials having suspendable particles homogeneously embedded within to form a composite and spherules of barium zirconate. The hydrous zirconium oxide spherules and gel forms prepared by the gel-sphere, internal gelation process are useful as inorganic ion exchangers, catalysts, getters and ceramics.

  19. Foam and gel methods for the decontamination of metallic surfaces

    DOE Patents [OSTI]

    Nunez, Luis; Kaminski, Michael Donald

    2007-01-23

    Decontamination of nuclear facilities is necessary to reduce the radiation field during normal operations and decommissioning of complex equipment. In this invention, we discuss gel and foam based diphosphonic acid (HEDPA) chemical solutions that are unique in that these solutions can be applied at room temperature; provide protection to the base metal for continued applications of the equipment; and reduce the final waste form production to one step. The HEDPA gels and foams are formulated with benign chemicals, including various solvents, such as ionic liquids and reducing and complexing agents such as hydroxamic acids, and formaldehyde sulfoxylate. Gel and foam based HEDPA processes allow for decontamination of difficult to reach surfaces that are unmanageable with traditional aqueous process methods. Also, the gel and foam components are optimized to maximize the dissolution rate and assist in the chemical transformation of the gel and foam to a stable waste form.

  20. A dosimetric study of small photon fields using polymer gel and Gafchromic EBT films

    SciTech Connect (OSTI)

    Hassani, Hossein; Nedaie, Hassan Ali; Zahmatkesh, Mohammad Hassan; Shirani, Kaveh

    2014-04-01

    The use of small field sizes is increasingly becoming important in radiotherapy particularly since the introduction of stereotactic radiosurgery and intensity-modulated radiation therapy techniques. The reliable measurement of delivered dose from such fields with conventional dosimeters, such as ionization chambers, is a challenging task. In this work, methacrylic and ascorbic acid in gelatin initiated by copper polymer gel dosimeters are employed to measure dose in 3 dimensions. Field sizes of 5 Ś 5 mm{sup 2}, 10 Ś 10 mm{sup 2}, 20 Ś 20 mm{sup 2}, and 30 Ś 30 mm{sup 2} are investigated for a 6-MV x-rays. The results show an agreement with Gafchromic film, with some variation in measured doses near the edge of the fields, where the film data decrease more rapidly than the other methods. Dose penumbra widths obtained with gel dosimeters and Gafchormic film were generally in agreement with each other. The results of this work indicate that polymer gel dosimetry could be invaluable for the quantification of the 3-dimensional dose distribution in small field size.

  1. Method for molding ceramic powders using a water-based gel casting process

    DOE Patents [OSTI]

    Jenny, Mark A. (Knoxville, TN); Omalete, Ogbemi O. (Lagos, NG)

    1992-09-08

    A method for molding ceramic powders comprises forming a slurry mixture including ceramic powder, a dispersant, and a monomer solution. The monomer solution includes at least one monofunctional monomer and at least one difunctional monomer, a free-radical initiator, and a aqueous solvent. The slurry mixture is transferred to a mold, and the mold containing the slurry mixture is heated to polymerize and crosslink the monomer and form a firm polymer-solvent gel matrix. The solid product may be removed from the mold and heated to first remove the solvent and subsequently remove the polymer, whereafter the product may be sintered.

  2. Method for molding ceramic powders using a water-based gel casting

    DOE Patents [OSTI]

    Janney, Mark A. (Knoxville, TN); Omatete, Ogbemi O. (Lagos, NG)

    1991-07-02

    A method for molding ceramic powders comprises forming a slurry mixture including ceramic powder, a dispersant, and a monomer solution. The monomer solution includes at least one monofunctional monomer and at least one difunctional monomer, a free-radical initiator, and a aqueous solvent. The slurry mixture is transferred to a mold, and the mold containing the slurry mixture is heated to polymerize and crosslink the monomer and form a firm polymer-solvent gel matrix. The solid product any be removed from the mold and heated to first remove the solvent and subsequently remove the polymer, whereafter the product may be sintered.

  3. Progress in Initiator Modeling

    SciTech Connect (OSTI)

    Hrousis, C A; Christensen, J S

    2009-05-04

    There is great interest in applying magnetohydrodynamic (MHD) simulation techniques to the designs of electrical high explosive (HE) initiators, for the purpose of better understanding a design's sensitivities, optimizing its performance, and/or predicting its useful lifetime. Two MHD-capable LLNL codes, CALE and ALE3D, are being used to simulate the process of ohmic heating, vaporization, and plasma formation in the bridge of an initiator, be it an exploding bridgewire (EBW), exploding bridgefoil (EBF) or slapper type initiator. The initiation of the HE is simulated using Tarver Ignition & Growth reactive flow models. 1-D, 2-D and 3-D models have been constructed and studied. The models provide some intuitive explanation of the initiation process and are useful for evaluating the potential impact of identified aging mechanisms (such as the growth of intermetallic compounds or powder sintering). The end product of this work is a simulation capability for evaluating margin in proposed, modified or aged initiation system designs.

  4. Industrial Carbon Management Initiative

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

    Industrial Carbon Management Initiative Fact Sheets Research Team Members Key Contacts Industrial Carbon Management Initiative (ICMI) Background The ICMI project is part of a larger program called Carbon Capture Simulation and Storage Initiative (C2S2I). The C2S2I has a goal of expanding the DOE's focus on Carbon Capture Utilization and Storage (CCUS) for advanced coal power systems and other applications, including the use of petroleum coke as a feedstock for the industrial sector. The American

  5. Initiatives | Department of Energy

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

    Initiatives Initiatives Through a variety of cross-cutting program initiatives, the Office of International Affairs (IA) responds to the most pressing global energy challenges, ranging from energy security and market volatility to long-term efforts to reduce carbon pollution and the impacts of climate change. IA has the primary responsibility for coordinating the efforts of diverse elements in the Department to ensure a unified voice in our international energy policy. This page highlights some

  6. About the Initiative

    SciTech Connect (OSTI)

    Not Available

    2007-06-01

    This factsheet gives an overview of the Solar America Initiative (SAI), including goals, research and development strategy, market transformation strategy, and benefits to nation.

  7. Salt Waste Processing Initiatives

    Office of Environmental Management (EM)

    Patricia Suggs Salt Processing Team Lead Assistant Manager for Waste Disposition Project Office of Environmental Management Savannah River Site Salt Waste Processing Initiatives 2 ...

  8. TVA- Solar Solutions Initiative

    Broader source: Energy.gov [DOE]

    Solar Solutions Initiative (SSI) is a pilot program that offers additional financial incentives for Solar PV systems participating in the Renewable Standard Offer program. Applications for new...

  9. National Laboratory Impact Initiative

    Broader source: Energy.gov [DOE]

    The National Laboratory Impact Initiative supports the relationship between the Office of Energy Efficiency & Renewable Energy and the national laboratory enterprise.  The national laboratories...

  10. Immobilization of cellulase on a silica gel substrate modified using a 3-APTES self-assembled monolayer

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zhang, Dezhi; Hegab, Hisham E.; Lvov, Yuri; Snow, L. Dale; Palmer, James

    2016-01-20

    Cellulase was immobilized onto silica gel surfaces pretreated with (3-aminopropyl) triethoxy-silane (3-APTES), and glutaraldehyde (GA) was used as a cross-linker. A carboxymethyl cellulose sodium salt (CMC) solution was used for activity experiments. Protein assay was performed to determine the mass immobilized and compare with free enzyme. Cellulase was successfully demonstrated to be immobilized on the modified silica gel surface, and no detectable amount of enzyme was stripped off during the hydrolysis of the CMC solution. The specific activity of the immobilized cellulase is 7 ± 2 % compared to the similar amount of free cellulase. Significant activity over multiple reusesmore » was observed. The seventh batch achieved 82 % activity of the initial batch, and the fifteenth batch retained 31 %. Lastly, it was observed that the immobilized cellulase retained 48 % of its initial activity after 4 days, and 22 % even after 14 days.« less

  11. Sol-gel processing with inorganic metal salt precursors

    DOE Patents [OSTI]

    Hu, Zhong-Cheng

    2004-10-19

    Methods for sol-gel processing that generally involve mixing together an inorganic metal salt, water, and a water miscible alcohol or other organic solvent, at room temperature with a macromolecular dispersant material, such as hydroxypropyl cellulose (HPC) added. The resulting homogenous solution is incubated at a desired temperature and time to result in a desired product. The methods enable production of high quality sols and gels at lower temperatures than standard methods. The methods enable production of nanosize sols from inorganic metal salts. The methods offer sol-gel processing from inorganic metal salts.

  12. Conformal Postoperative Radiotherapy in Patients With Positive Resection

    Office of Scientific and Technical Information (OSTI)

    Margins and/or pT3-4 Prostate Adenocarcinoma (Journal Article) | SciTech Connect Conformal Postoperative Radiotherapy in Patients With Positive Resection Margins and/or pT3-4 Prostate Adenocarcinoma Citation Details In-Document Search Title: Conformal Postoperative Radiotherapy in Patients With Positive Resection Margins and/or pT3-4 Prostate Adenocarcinoma Purpose: To evaluate outcome and toxicity of high-dose conformal radiotherapy (RT) after radical prostatectomy. Methods and Materials:

  13. Oxidizer gels for detoxification of chemical and biological agents

    DOE Patents [OSTI]

    Hoffman, Dennis M.; McGuire, Raymond R.

    2002-01-01

    A gel composition containing oxidizing agents and thickening or gelling agents is used to detoxify chemical and biological agents by application directly to a contaminated area. The gelling agent is a colloidal material, such as silica, alumina, or alumino-silicate clays, which forms a viscous gel that does not flow when applied to tilted or contoured surfaces. Aqueous or organic solutions of oxidizing agents can be readily gelled with less than about 30% colloidal material. Gel preparation is simple and suitable for field implementation, as the gels can be prepared at the site of decontamination and applied quickly and uniformly over an area by a sprayer. After decontamination, the residue can be washed away or vacuumed up for disposal.

  14. Sol-gel-derived Epitaxial Nanocomposite Thin Films with Large...

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

    Sol-gel-derived Epitaxial Nanocomposite Thin Films with Large Sharp Magnetoelectric Effect Home Author: B. Liu, T. Sun, J. He, V. P. Dravid Year: 2010 Abstract: Nanostructures of...

  15. FXR agonist activity of conformationally constrained analogs of GW 4064

    SciTech Connect (OSTI)

    Akwabi-Ameyaw, Adwoa; Bass, Jonathan Y.; Caldwell, Richard D.; Caravella, Justin A.; Chen, Lihong; Creech, Katrina L.; Deaton, David N.; Madauss, Kevin P.; Marr, Harry B.; McFadyen, Robert B.; Miller, Aaron B.; Navas, III, Frank; Parks, Derek J.; Spearing, Paul K.; Todd, Dan; Williams, Shawn P.; Wisely, G. Bruce

    2010-09-27

    Two series of conformationally constrained analogs of the FXR agonist GW 4064 1 were prepared. Replacement of the metabolically labile stilbene with either benzothiophene or naphthalene rings led to the identification of potent full agonists 2a and 2g.

  16. Lithium-ion batteries having conformal solid electrolyte layers

    DOE Patents [OSTI]

    Kim, Gi-Heon; Jung, Yoon Seok

    2014-05-27

    Hybrid solid-liquid electrolyte lithium-ion battery devices are disclosed. Certain devices comprise anodes and cathodes conformally coated with an electron insulating and lithium ion conductive solid electrolyte layer.

  17. Nucleation of Ultrathin, Continuous, Conformal Metal Films Using...

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

    Technology Marketing SummaryA research team at the University of Colorado at Boulder led by Steven George has developed a method to prepare a conformal thin film of platinum or...

  18. Liquid and gel electrodes for transverse free flow electrophoresis (Patent)

    Office of Scientific and Technical Information (OSTI)

    | SciTech Connect SciTech Connect Search Results Patent: Liquid and gel electrodes for transverse free flow electrophoresis Citation Details In-Document Search Title: Liquid and gel electrodes for transverse free flow electrophoresis The present invention provides a mechanism for separating or isolating charged particles under the influence of an electric field without metal electrodes being in direct contact with the sample solution. The metal electrodes normally in contact with the sample

  19. Microstructure and Rheology of Thermoreversible Nanoparticle Gels (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Microstructure and Rheology of Thermoreversible Nanoparticle Gels Citation Details In-Document Search Title: Microstructure and Rheology of Thermoreversible Nanoparticle Gels Authors: Ramakrishnan, S. ; Zukoski, C.F. [1] + Show Author Affiliations (UIUC) Publication Date: 2015-02-06 OSTI Identifier: 1169975 Resource Type: Journal Article Resource Relation: Journal Name: Langmuir; Journal Volume: 22; Journal Issue: (18) ; 08, 2006 Research Org: Advanced Photon

  20. Molecular conformations, interactions, and properties associated with drug

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

    efficiency and clinical performance among VEGFR TK inhibitors Molecular conformations, interactions, and properties associated with drug efficiency and clinical performance among VEGFR TK inhibitors Molecular conformations, interactions, and properties associated with drug efficiency and clinical performance among VEGFR TK inhibitors Print Monday, 17 September 2012 00:00 Pictured are crystals that contain VEGFR2 tyrosine kinase in complex with an inhibitor from a class of potent anticancer

  1. Conformational differences between the Pfr and Pr states in Pseudomonas

    Office of Scientific and Technical Information (OSTI)

    aeruginosa bacteriophytochrome (Journal Article) | SciTech Connect Journal Article: Conformational differences between the Pfr and Pr states in Pseudomonas aeruginosa bacteriophytochrome Citation Details In-Document Search Title: Conformational differences between the Pfr and Pr states in Pseudomonas aeruginosa bacteriophytochrome Authors: Yang, Xiaojing ; Kuk, Jane ; Moffat, Keith [1] + Show Author Affiliations (UC) Publication Date: 2015-09-22 OSTI Identifier: 1221422 Resource Type:

  2. Structure and conformational change of a replication protein A heterotrimer

    Office of Scientific and Technical Information (OSTI)

    bound to ssDNA (Journal Article) | SciTech Connect SciTech Connect Search Results Journal Article: Structure and conformational change of a replication protein A heterotrimer bound to ssDNA Citation Details In-Document Search Title: Structure and conformational change of a replication protein A heterotrimer bound to ssDNA Authors: Fan, Jie ; Pavletich, Nikola P. [1] ; MSKCC) [2] + Show Author Affiliations (Cornell) ( Publication Date: 2012-11-01 OSTI Identifier: 1054356 Resource Type:

  3. A conformational landscape for alginate secretion across the outer membrane

    Office of Scientific and Technical Information (OSTI)

    of Pseudomonas aeruginosa (Journal Article) | SciTech Connect A conformational landscape for alginate secretion across the outer membrane of Pseudomonas aeruginosa Citation Details In-Document Search Title: A conformational landscape for alginate secretion across the outer membrane of Pseudomonas aeruginosa Authors: Tan, Jingquan ; Rouse, Sarah L. ; Li, Dianfan ; Pye, Valerie E. ; Vogeley, Lutz ; Brinth, Alette R. ; El Arnaout, Toufic ; Whitney, John C. ; Howell, P. Lynne ; Sansom, Mark S.P.

  4. Identifying Transition State Features of Enzymatic Conformational Cycles |

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

    Stanford Synchrotron Radiation Lightsource Identifying Transition State Features of Enzymatic Conformational Cycles Thursday, January 5, 2012 - 11:00am SSRL Conference Room 137-322 Dr. Dimitar Pachov, HHMI Research Associate, Kern's Group, Brandeis University, MA Due to their dynamic nature relevant to biological activity, biomolecules frequently interconvert between functional substates. Determining how these visits to different conformational states are physically characterized remains a

  5. Microsoft Word - Section B -Conformed thru 355.docx

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

    B Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. 355 B - i SECTION B SUPPLIES OR SERVICES AND PRICES/COSTS WTP Contract Section B Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. 355 B - ii SECTION B SUPPLIES OR SERVICES AND PRICES/COSTS TABLE OF CONTENTS Section Clause Page B.1 TYPE OF CONTRACT - ITEMS BEING ACQUIRED ..................................................................... 1 B.2 ITEMS BEING ACQUIRED

  6. Green Button Initiative Growing

    Broader source: Energy.gov [DOE]

    The Green Button initiative, which is the common-sense idea that electricity customers should be able to securely download their own energy usage information from their utility websites, is continuing to gain traction across the country.

  7. Initiatives | Department of Energy

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

    Initiatives Initiatives The Office of Energy Policy & Systems Analysis (EPSA) responds to the most pressing domestic energy challenges, delivering unbiased energy analysis to the Department of Energy's leadership on existing and prospective energy-related policies, focusing in part on integrative analysis of energy systems. EPSA also includes the Secretariat of the Quadrennial Energy Review, which has primary responsibility for supporting the White House interagency process and providing to

  8. RCRA facility stabilization initiative

    SciTech Connect (OSTI)

    Not Available

    1995-02-01

    The RCRA Facility Stabilization Initiative was developed as a means of implementing the Corrective Action Program`s management goals recommended by the RIS for stabilizing actual or imminent releases from solid waste management units that threaten human health and the environment. The overall goal of stabilization is to, as situations warrant, control or abate threats to human health and/or the environment from releases at RCRA facilities, and/or to prevent or minimize the further spread of contamination while long-term remedies are pursued. The Stabilization initiative is a management philosophy and should not be confused with stabilization technologies.

  9. 2007 Initial Allocation Awards

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

    7 Awards 2007 Initial Allocation Awards The following table lists the initial allocation awards for NERSC for the 2007 allocation year (Jan 9, 2007 through Jan 7, 2008). The list is in alphabetical order by the last name of the Principal Investigator. Note - Letters following the repository name indicate the following: 'I' DOE ASCR INCITE award 'S' NERSC Startup award A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Principal Site Request Repo SP HPSS Project Title Investigator Id Hours SRUs

  10. Clean Coal Power Initiative

    SciTech Connect (OSTI)

    Doug Bartlett; Rob James; John McDermott; Neel Parikh; Sanjay Patnaik; Camilla Podowski

    2006-03-31

    This report is the fifth quarterly Technical Progress Report submitted by NeuCo, Incorporated, under Award Identification Number, DE-FC26-04NT41768. This award is part of the Clean Coal Power Initiative (''CCPI''), the ten-year, $2B initiative to demonstrate new clean coal technologies in the field. This report is one of the required reports listed in Attachment B Federal Assistance Reporting Checklist, part of the Cooperative Agreement. The report covers the award period January 1, 2006 - March 31, 2006 and NeuCo's efforts within design, development, and deployment of on-line optimization systems during that period.

  11. Method for preparing hydrous iron oxide gels and spherules

    DOE Patents [OSTI]

    Collins, Jack L.; Lauf, Robert J.; Anderson, Kimberly K.

    2003-07-29

    The present invention is directed to methods for preparing hydrous iron oxide spherules, hydrous iron oxide gels such as gel slabs, films, capillary and electrophoresis gels, iron monohydrogen phosphate spherules, hydrous iron oxide spherules having suspendable particles homogeneously embedded within to form composite sorbents and catalysts, iron monohydrogen phosphate spherules having suspendable particles of at least one different sorbent homogeneously embedded within to form a composite sorbent, iron oxide spherules having suspendable particles homogeneously embedded within to form a composite of hydrous iron oxide fiber materials, iron oxide fiber materials, hydrous iron oxide fiber materials having suspendable particles homogeneously embedded within to form a composite, iron oxide fiber materials having suspendable particles homogeneously embedded within to form a composite, dielectric spherules of barium, strontium, and lead ferrites and mixtures thereof, and composite catalytic spherules of barium or strontium ferrite embedded with oxides of Mg, Zn, Pb, Ce and mixtures thereof. These variations of hydrous iron oxide spherules and gel forms prepared by the gel-sphere, internal gelation process offer more useful forms of inorganic ion exchangers, catalysts, getters, dielectrics, and ceramics.

  12. Conformation and interactions of dopamine hydrochloride in solution

    SciTech Connect (OSTI)

    Callear, Samantha K.; Imberti, Silvia; Johnston, Andrew; McLain, Sylvia E.

    2015-01-07

    The aqueous solution of dopamine hydrochloride has been investigated using neutron and X-ray total scattering data together with Monte-Carlo based modelling using Empirical Potential Structure Refinement. The conformation of the protonated dopamine molecule is presented and the results compared to the conformations found in crystal structures, dopamine-complexed protein crystal structures and predicted from theoretical calculations and pharmacophoric models. It is found that protonated dopamine adopts a range of conformations in solution, highlighting the low rotational energy barrier between different conformations, with the preferred conformation being trans-perpendicular. The interactions between each of the species present (protonated dopamine molecules, water molecules, and chloride anions) have been determined and are discussed with reference to interactions observed in similar systems both in the liquid and crystalline state, and predicted from theoretical calculations. The expected strong hydrogen bonds between the strong hydrogen bond donors and acceptors are observed, together with evidence of weaker CH hydrogen bonds and π interactions also playing a significant role in determining the arrangement of adjacent molecules.

  13. Monolithic exploding foil initiator

    DOE Patents [OSTI]

    Welle, Eric J; Vianco, Paul T; Headley, Paul S; Jarrell, Jason A; Garrity, J. Emmett; Shelton, Keegan P; Marley, Stephen K

    2012-10-23

    A monolithic exploding foil initiator (EFI) or slapper detonator and the method for making the monolithic EFI wherein the exploding bridge and the dielectric from which the flyer will be generated are integrated directly onto the header. In some embodiments, the barrel is directly integrated directly onto the header.

  14. Clean Energy Manufacturing Initiative

    SciTech Connect (OSTI)

    2013-04-01

    The initiative will strategically focus and rally EERE’s clean energy technology offices and Advanced Manufacturing Office around the urgent competitive opportunity for the United States to be the leader in the clean energy manufacturing industries and jobs of today and tomorrow.

  15. Scaffold architecture and fibrin gels promote meniscal cell proliferation

    SciTech Connect (OSTI)

    Pawelec, K. M. E-mail: jw626@cam.ac.uk; Best, S. M.; Cameron, R. E.; Wardale, R. J. E-mail: jw626@cam.ac.uk

    2015-01-01

    Stability of the knee relies on the meniscus, a complex connective tissue with poor healing ability. Current meniscal tissue engineering is inadequate, as the signals for increasing meniscal cell proliferation have not been established. In this study, collagen scaffold structure, isotropic or aligned, and fibrin gel addition were tested. Metabolic activity was promoted by fibrin addition. Cellular proliferation, however, was significantly increased by both aligned architectures and fibrin addition. None of the constructs impaired collagen type I production or triggered adverse inflammatory responses. It was demonstrated that both fibrin gel addition and optimized scaffold architecture effectively promote meniscal cell proliferation.

  16. Methods for immobilizing nucleic acids on a gel substrate

    DOE Patents [OSTI]

    Mirzabekov, Andrei Darievich (Moscow, RU); Proudnikov, Dimitri Y. (Samara, RU); Timofeev, Edward N. (Moscow, RU); Kochetkova, Svetlana V. (Moscow, RU); Florentiev, Vladimir L. (Moscow, RU); Shick, Valentine V. (Moscow, RU)

    1999-01-01

    A method for labeling oligonucleotide molecules, and for immobilizing oligonucleotide and DNA molecules is provided comprising modifying the molecules to create a chemically active group, and contacting activated fluorescent dyes to the region. A method for preparing an immobilization substrate is also provided comprising modifying a gel to contain desired functional groups which covalently interact with certain moieties of the oligonucleotide molecules. A method for immobilizing biomolecules and other molecules within a gel by copolymerization of allyl-substituted oligonucleotides, DNA and proteins with acrylamide is also provided.

  17. Salt Waste Processing Initiatives

    Office of Environmental Management (EM)

    Patricia Suggs Salt Processing Team Lead Assistant Manager for Waste Disposition Project Office of Environmental Management Savannah River Site Salt Waste Processing Initiatives 2 Overview * Current SRS Liquid Waste System status * Opportunity to accelerate salt processing - transformational technologies - Rotary Microfiltration (RMF) and Small Column Ion Exchange (SCIX) - Actinide Removal Process/Modular Caustic Side Solvent Extraction (ARP/MCU) extension with next generation extractant - Salt

  18. Asset Revitalization Initiative ARI

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

    Asset Revitalization Initiative ( ARI ) Mission * Community * Reuse ARI is a DOE-wide effort to advance the beneficial reuse of the agency's unique and diverse mix of assets, including land, facilities, infrastructure, equipment, technologies, natural resources, and highly skilled workforce. ARI promotes an efficient business environment to encourage collaboration between public and private resources. ARI integrates DOE missions with community interests. ARI is... Our Vision By 2020: Operations

  19. Nuclear Workforce Initiative - SRSCRO

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

    nuclear Nuclear Workforce Initiative The SRSCRO region of Georgia and South Carolina has the most unique nuclear industry capabilities in the nation. This region is at the forefront of new nuclear power production, environmental stewardship, innovative technology and national security. Long-term nuclear workforce demand is growing in the region as new nuclear reactors are under construction at the V.C Summer Nuclear Station in Fairfield County, SC and at Plant Vogtle in Waynesboro, GA. New

  20. OSM's reforestation initiative

    SciTech Connect (OSTI)

    Boyce, J.S.

    1999-07-01

    Implementation of the Surface Mining Control and Reclamation Act (SMCRA) has discouraged reforestation in some situations where reforestation would be desirable. OSM is engaged in an initiative to increase the amount of mined land reclaimed to forest where appropriate. The authors are seeking to determine those elements of the Federal/State regulator programs that discourage reforestation and find ways to offset these impacts. Potential factors militating against reforestation are identified and possible solutions are discussed.

  1. Global Threat Reduction Initiative

    Office of Environmental Management (EM)

    The Current Status of Gap and U.S.-Origin Nuclear Fuel Removals 2011 Jeff Galan, Deputy Project Manager U.S.-Origin Nuclear Remove Program National Nuclear Security Administration Global Threat Reduction Initiative Defense Nuclear Nonproliferation U.S. DEPARTMENT OF ENERGY 2 GTRI Mission and Goals GTRI is: A part of President Obama's comprehensive strategy to prevent nuclear terrorism; and The key organization responsible for implementing the U.S. HEU minimization policy. GTRI MISSION Reduce

  2. Green Initiatives and Contracting

    Office of Environmental Management (EM)

    GSA Is Now Training Contracting Officers In Green Purchasing Green Purchasing for the Federal Acquisition Work Force * introduction to the federal green purchasing program * assists learners with identifying green products * discusses factors that shape federal green purchasing initiatives https://cae.gsa.gov 2 "There's some challenges here" "Environmental Aisle" in the GSA Advantage electronic-purchasing website for federal buyers to find green products Environmental

  3. Conformation of ionizable poly Para phenylene ethynylene in dilute solutions

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wijesinghe, Sidath; Maskey, Sabina; Perahia, Dvora; Grest, Gary S.

    2015-11-03

    The conformation of dinonyl poly para phenylene ethynylenes (PPEs) with carboxylate side chains, equilibrated in solvents of different quality is studied using molecular dynamics simulations. PPEs are of interest because of their tunable electro-optical properties, chemical diversity, and functionality which are essential in wide range of applications. The polymer conformation determines the conjugation length and their assembly mode and affects electro-optical properties which are critical in their current and potential uses. The current study investigates the effect of carboxylate fraction on PPEs side chains on the conformation of chains in the dilute limit, in solvents of different quality. The dinonylmore » PPE chains are modeled atomistically, where the solvents are modeled both implicitly and explicitly. Dinonyl PPEs maintained a stretched out conformation up to a carboxylate fraction f of 0.7 in all solvents studied. The nonyl side chains are extended and oriented away from the PPE backbone in toluene and in implicit good solvent whereas in water and implicit poor solvent, the nonyl side chains are collapsed towards the PPE backbone. Thus, rotation around the aromatic ring is fast and no long range correlations are seen within the backbone.« less

  4. Finding the needle in the haystack: Algorithms for conformational optimization

    SciTech Connect (OSTI)

    Andricioaei, I.; Straub, J.E.

    1996-09-01

    Algorithms are given for comformational optimization of proteins. The protein folding problems is regarded as a problem of global energy mimimization. Since proteins have hundreds of atoms, finding the lowest-energy conformation in a many-dimensional configuration space becomes a computationally demanding problem.{copyright} {ital American Institute of Physics.}

  5. Process of forming a sol-gel/metal hydride composite

    DOE Patents [OSTI]

    Congdon, James W. (Aiken, SC)

    2009-03-17

    An external gelation process is described which produces granules of metal hydride particles contained within a sol-gel matrix. The resulting granules are dimensionally stable and are useful for applications such as hydrogen separation and hydrogen purification. An additional coating technique for strengthening the granules is also provided.

  6. Sol-gel matrices for direct colorimetric detection of analytes

    DOE Patents [OSTI]

    Charych, Deborah H.; Sasaki, Darryl; Yamanaka, Stacey

    2000-01-01

    The present invention relates to methods and compositions for the direct detection of analytes using color changes that occur in immobilized biopolymeric material in response to selective binding of analytes to their surface. In particular, the present invention provides methods and compositions related to the encapsulation of biopolymeric material into metal oxide glass using the sol-gel method.

  7. Sol-Gel Matrices For Direct Colorimetric Detection Of Analytes

    DOE Patents [OSTI]

    Charych, Deborah H.; Sasaki, Darryl; Yamanaka, Stacey

    2002-11-26

    The present invention relates to methods and compositions for the direct detection of analytes using color changes that occur in immobilized biopolymeric material in response to selective binding of analytes to their surface. In particular, the present invention provides methods and compositions related to the encapsulation of biopolymeric material into metal oxide glass using the sol-gel method.

  8. Process for fabricating doped zinc oxide microsphere gel

    DOE Patents [OSTI]

    Arnold, Jr., Wesley D.; Bond, Walter D.; Lauf, Robert J.

    1991-01-01

    A new composition and method of making same for a doped zinc oxide microsphere and articles made therefrom for use in an electrical surge arrestor which has increased solid content, uniform grain size and is in the form of a gel.

  9. Process for fabricating doped zinc oxide microsphere gel

    DOE Patents [OSTI]

    Arnold, W.D. Jr.; Bond, W.D.; Lauf, R.J.

    1991-11-05

    Disclosed are a new composition and method of making same for a doped zinc oxide microsphere and articles made therefrom for use in an electrical surge arrestor which has increased solid content, uniform grain size and is in the form of a gel. 4 figures.

  10. Through bulkhead initiator studies

    SciTech Connect (OSTI)

    Begeal, D.R.

    1997-03-01

    This report describes recent work done to demonstrate feasibility of a fail-safe Through Bulkhead Initiator with minimum dimensions and suitable for use in cyclical thermal environments. Much of the ground work for a fail-safe TBI was previously done by A.C. Schwartz. This study is an expansion of Schwartz`s work to evaluate devices with bulkheads of 304 stainless steel and Inconel 718; explosive donors of PETN, BNCP, and a 0.005 inch thick steel flying plate donor traveling at 2.6 mm/{micro}s; and explosive acceptors of PETN and BNCP. Bulkhead thickness were evaluated in the range of 0.040 to 0.180 inch. The explosive acceptors initiated a small HMX pellet to drive a 0.005 inch thick steel flying plate, and VISAR histories of the HMX-driven flying plates were the measure of acceptable performance. A companion set of samples used a PMMA acceptor to measure the particle velocities at the bulkhead/PMMA interface with VISAR. These data were used to compute the input pressure to the acceptor explosives in an attempt to measure initiation threshold. Unfortunately, the range of bulkhead thicknesses tested did not give any failures, thus the threshold was not determined. It was found that either explosive or the flying plate would perform as a TBI in the bulkhead thickness range tested. The optimum TBI is about 0.060 inches thick, and steel bulkheads seem to be more structurally sound than those made of Inconel. That is, cross section views of the Inconel bulkheads showed it to be more prone to stress cracking than was the 304 stainless steel. Both PETN and BNCP showed good performance when tested at {minus}65 F following thermal cycling of {minus}65 F to +165 F. Analysis of the TBI function times showed that BNCP acceptor explosives were undergoing the classical deflagration to detonation process. The PETN acceptors were undergoing prompt detonation.

  11. World Consensus Initiative 2004

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

    Consensus Initiative 2004 Texas A&M University Meeting 12-16 February 2005 The study of nuclear reaction dynamics and thermodynamics in the Fermi-energy regime has progressed dramatically in the past 20 years. We, the undersigned, believe that it is important at this time to reflect on those advances and to produce a status report outlining both what we have learned and what outstanding questions remain. This exercise is important both for the focus it will give us internally in the field

  12. UNLV Nuclear Hydrogen Initiative

    SciTech Connect (OSTI)

    Hechanova, Anthony E.; Johnson, Allen; O'Toole, Brendan; Trabia, Mohamed; Peterson, Per

    2012-10-25

    Evaluation of the Crack growth rate (CGR) of Alloy 617 and Alloy 276 under constant K at ambient temperature has been completed. Creep deformation of Alloy 230 at different temperature range and load level has been completed and heat to heat variation has been noticed. Creep deformation study of Alloy 276 has been completed under an applied initial stress level of 10% of yield stress at 950șC. The grain size evaluation of the tested creep specimens of Alloy 276 has been completed.

  13. 2004 Initial Allocation Awards

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

    4 Awards 2004 Initial Allocation Awards The following table lists the allocation awards for NERSC for the extended 2004 fiscal year (Oct 1, 2003 through Nov 30, 2004). The list is in alphabetical order by the last name of the Principal Investigator. Note - Letters following the repository name indicate the following: 'I' DOE ASCR INCITE award 'S' NERSC Startup award A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Principal Site Request Repo SP HPSS Project Title Investigator Id Hours SRUs

  14. 2005 Initial Allocation Awards

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

    5 Awards 2005 Initial Allocation Awards The following table lists the allocation awards for NERSC for the 2005 allocation year (Dec 1, 2004 through Nov 30, 2005). The list is in alphabetical order by the last name of the Principal Investigator. Note - Letters following the repository name indicate the following: 'I' DOE ASCR INCITE award 'S' NERSC Startup award A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Principal Site Request Repo SP HPSS Project Title Investigator Id Hours SRUs

  15. 2006 Initial Allocation Awards

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

    6 Awards 2006 Initial Allocation Awards The following table lists the allocation awards for NERSC for the 2006 allocation year (Dec 1, 2005 through Jan 8, 2007). The list is in alphabetical order by the last name of the Principal Investigator. Note - Letters following the repository name indicate the following: 'I' DOE ASCR INCITE award 'S' NERSC Startup award A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Principal Site Request Repo SP HPSS Project Title Investigator Id Hours SRUs Agarwal,

  16. 2008 Initial Allocation Awards

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

    8 Awards 2008 Initial Allocation Awards The following table lists the allocation awards for NERSC for the 2008 allocation year (Jan 8, 2008 through Jan 12, 2009). The list is in alphabetical order by the last name of the Principal Investigator. Note - Letters following the repository name indicate the following: 'I' DOE ASCR INCITE award 'S' NERSC Startup award A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Principal Site Request Repo SP HPSS Project Title Investigator Id Hours SRUs Adams,

  17. Hanford tanks initiative plan

    SciTech Connect (OSTI)

    McKinney, K.E.

    1997-07-01

    Abstract: The Hanford Tanks Initiative (HTI) is a five-year project resulting from the technical and financial partnership of the U.S. Department of Energy`s Office of Waste Management (EM-30) and Office of Science and Technology Development (EM-50). The HTI project accelerates activities to gain key technical, cost performance, and regulatory information on two high-level waste tanks. The HTI will provide a basis for design and regulatory decisions affecting the remainder of the Tank Waste Remediation System`s tank waste retrieval Program.

  18. Electrophoretic extraction of proteins from two-dimensional electrophoresis gel spots

    DOE Patents [OSTI]

    Zhang, Jian-Shi; Giometti, C.S.; Tollaksen, S.L.

    1987-09-04

    After two-dimensional electrophoresis of proteins or the like, resulting in a polyacrylamide gel slab having a pattern of protein gel spots thereon, an individual protein gel spot is cored out from the slab, to form a gel spot core which is placed in an extraction tube, with a dialysis membrane across the lower end of the tube. Replicate gel spots can be cored out from replicate gel slabs and placed in the extraction tube. Molten agarose gel is poured into the extraction tube where the agarose gel hardens to form an immobilizing gel, covering the gel spot cores. The upper end portion of the extraction tube is filled with a volume of buffer solution, and the upper end is closed by another dialysis membrane. Upper and lower bodies of a buffer solution are brought into contact with the upper and lower membranes and are provided with electrodes connected to the positive and negative terminals of a dc power supply, thereby producing an electrical current which flows through the upper membrane, the volume of buffer solution, the agarose, the gel spot cores and the lower membrane. The current causes the proteins to be extracted electrophoretically from the gel spot cores, so that the extracted proteins accumulate and are contained in the space between the agarose gel and the upper membrane. 8 figs.

  19. Basic Research for the Hydrogen Fuel Initiative

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

    PEM Fuel Cells Carnegie Mellon University Rapid Ab Initio Screening of Ternary Alloys for Hydrogen Production Rensselaer Polytechnic Institute Sol-Gel Based Polybenzimidazole...

  20. Precision flyer initiator

    DOE Patents [OSTI]

    Frank, A.M.; Lee, R.S.

    1998-05-26

    A precision flyer initiator forms a substantially spherical detonation wave in a high explosive (HE) pellet. An explosive driver, such as a detonating cord, a wire bridge circuit or a small explosive, is detonated. A flyer material is sandwiched between the explosive driver and an end of a barrel that contains an inner channel. A projectile or ``flyer`` is sheared from the flyer material by the force of the explosive driver and projected through the inner channel. The flyer than strikes the HE pellet, which is supported above a second end of the barrel by a spacer ring. A gap or shock decoupling material delays the shock wave in the barrel from predetonating the HE pellet before the flyer. A spherical detonation wave is formed in the HE pellet. Thus, a shock wave traveling through the barrel fails to reach the HE pellet before the flyer strikes the HE pellet. The precision flyer initiator can be used in mining devices, well-drilling devices and anti-tank devices. 10 figs.

  1. Precision flyer initiator

    DOE Patents [OSTI]

    Frank, Alan M. (Livermore, CA); Lee, Ronald S. (Livermore, CA)

    1998-01-01

    A precision flyer initiator forms a substantially spherical detonation wave in a high explosive (HE) pellet. An explosive driver, such as a detonating cord, a wire bridge circuit or a small explosive, is detonated. A flyer material is sandwiched between the explosive driver and an end of a barrel that contains an inner channel. A projectile or "flyer" is sheared from the flyer material by the force of the explosive driver and projected through the inner channel. The flyer than strikes the HE pellet, which is supported above a second end of the barrel by a spacer ring. A gap or shock decoupling material delays the shock wave in the barrel from predetonating the HE pellet before the flyer. A spherical detonation wave is formed in the HE pellet. Thus, a shock wave traveling through the barrel fails to reach the HE pellet before the flyer strikes the HE pellet. The precision flyer initiator can be used in mining devices, well-drilling devices and anti-tank devices.

  2. Initiatives for proliferation prevention

    SciTech Connect (OSTI)

    1997-04-01

    Preventing the proliferation of weapons of mass destruction is a central part of US national security policy. A principal instrument of the Department of Energy`s (DOE`s) program for securing weapons of mass destruction technology and expertise and removing incentives for scientists, engineers and technicians in the newly independent states (NIS) of the former Soviet Union to go to rogue countries or assist terrorist groups is the Initiatives for Proliferation Prevention (IPP). IPP was initiated pursuant to the 1994 Foreign Operations Appropriations Act. IPP is a nonproliferation program with a commercialization strategy. IPP seeks to enhance US national security and to achieve nonproliferation objectives by engaging scientists, engineers and technicians from former NIS weapons institutes; redirecting their activities in cooperatively-developed, commercially viable non-weapons related projects. These projects lead to commercial and economic benefits for both the NIS and the US IPP projects are funded in Russian, Ukraine, Kazakhstan and Belarus. This booklet offers an overview of the IPP program as well as a sampling of some of the projects which are currently underway.

  3. Electrodes synthesized from carbon nanostructures coated with a smooth and conformal metal adlayer

    DOE Patents [OSTI]

    Adzic, Radoslav; Harris, Alexander

    2014-04-15

    High-surface-area carbon nanostructures coated with a smooth and conformal submonolayer-to-multilayer thin metal films and their method of manufacture are described. The preferred manufacturing process involves the initial oxidation of the carbon nanostructures followed by a surface preparation process involving immersion in a solution with the desired pH to create negative surface dipoles. The nanostructures are subsequently immersed in an alkaline solution containing a suitable quantity of non-noble metal ions which adsorb at surface reaction sites. The metal ions are then reduced via chemical or electrical means. The nanostructures are exposed to a solution containing a salt of one or more noble metals which replace adsorbed non-noble surface metal atoms by galvanic displacement. The process can be controlled and repeated to obtain a desired film coverage. The resulting coated nanostructures may be used, for example, as high-performance electrodes in supercapacitors, batteries, or other electric storage devices.

  4. Ammonia Sensors Based on Doped-Sol-Gel-Tipped Optical Fibers...

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

    Sensors Based on Doped-Sol-Gel-Tipped Optical Fibers for Catalyst System Diagnostics Ammonia Sensors Based on Doped-Sol-Gel-Tipped Optical Fibers for Catalyst System Diagnostics ...

  5. Sol-gel deposition of buffer layers on biaxially textured metal...

    Office of Scientific and Technical Information (OSTI)

    Sol-gel deposition of buffer layers on biaxially textured metal substances Citation Details In-Document Search Title: Sol-gel deposition of buffer layers on biaxially textured ...

  6. Instrumented Pipeline Initiative

    SciTech Connect (OSTI)

    Thomas Piro; Michael Ream

    2010-07-31

    This report summarizes technical progress achieved during the cooperative agreement between Concurrent Technologies Corporation (CTC) and U.S. Department of Energy to address the need for a for low-cost monitoring and inspection sensor system as identified in the Department of Energy (DOE) National Gas Infrastructure Research & Development (R&D) Delivery Reliability Program Roadmap.. The Instrumented Pipeline Initiative (IPI) achieved the objective by researching technologies for the monitoring of pipeline delivery integrity, through a ubiquitous network of sensors and controllers to detect and diagnose incipient defects, leaks, and failures. This report is organized by tasks as detailed in the Statement of Project Objectives (SOPO). The sections all state the objective and approach before detailing results of work.

  7. WTP Contract Section F Contract No. DE-AC27-01RV14136 Conformed...

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

    F Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. A143 F - i SECTION F DELIVERIES OR PERFORMANCE WTP Contract Section F Contract No. DE-AC27-01RV14136 Conformed Thru...

  8. WTP Contract Section D Contract No. DE-AC27-01RV14136 Conformed...

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

    D Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. A143 D - i SECTION D PACKAGING AND MARKING WTP Contract Section D Contract No. DE-AC27-01RV14136 Conformed Thru...

  9. Title 43 CFR 1610.5-3 Conformity and Implementation | Open Energy...

    Open Energy Info (EERE)

    to library Legal Document- Federal RegulationFederal Regulation: Title 43 CFR 1610.5-3 Conformity and ImplementationLegal Abstract 1610.5-3 Conformity and implementation...

  10. MONTANA PALLADIUM RESEARCH INITIATIVE

    SciTech Connect (OSTI)

    Peters, John McCloskey, Jay Douglas, Trevor Young, Mark Snyder, Stuart Gurney, Brian

    2012-05-09

    Project Objective: The overarching objective of the Montana Palladium Research Initiative is to perform scientific research on the properties and uses of palladium in the context of the U.S. Department of Energy'Ă?Â?Ă?Â?Ă?Â?Ă?Â?Ă?Â?Ă?Â?Ă?Â?Ă?Â?s Hydrogen, Fuel Cells and Infrastructure Technologies Program. The purpose of the research will be to explore possible palladium as an alternative to platinum in hydrogen-economy applications. To achieve this objective, the Initiatives activities will focus on several cutting-edge research approaches across a range of disciplines, including metallurgy, biomimetics, instrumentation development, and systems analysis. Background: Platinum-group elements (PGEs) play significant roles in processing hydrogen, an element that shows high potential to address this need in the U.S. and the world for inexpensive, reliable, clean energy. Platinum, however, is a very expensive component of current and planned systems, so less-expensive alternatives that have similar physical properties are being sought. To this end, several tasks have been defined under the rubric of the Montana Palladium Research Iniative. This broad swath of activities will allow progress on several fronts. The membrane-related activities of Task 1 employs state-of-the-art and leading-edge technologies to develop new, ceramic-substrate metallic membranes for the production of high-purity hydrogen, and develop techniques for the production of thin, defect-free platinum group element catalytic membranes for energy production and pollution control. The biomimetic work in Task 2 explores the use of substrate-attached hydrogen-producing enzymes and the encapsulation of palladium in virion-based protein coats to determine their utility for distributed hydrogen production. Task 3 work involves developing laser-induced breakdown spectroscopy (LIBS) as a real-time, in situ diagnostic technique to characterize PGEs nanoparticles for process monitoring and control. The systems engineering work in task 4 will determine how fuel cells Ă?Â?Ă?Â?Ă?Â?Ă?Â?Ă?Â?Ă?Â?Ă?Â?Ă?Â?taken as systems behave over periods of time that should show how their reformers and other subsystems deteriorate with time.

  11. On the null trajectories in conformal Weyl gravity

    SciTech Connect (OSTI)

    Villanueva, J.R.; Olivares, Marco E-mail: marco.olivaresrubilar@gmail.com

    2013-06-01

    In this work we find analytical solutions to the null geodesics around a black hole in the conformal Weyl gravity. Exact expressions for the horizons are found, and they depend on the cosmological constant and the coupling constants of the conformal Weyl gravity. Then, we study the radial motion from the point of view of the proper and coordinate frames, and compare it with that found in spacetimes of general relativity. The angular motion is also examined qualitatively by means of an effective potential; quantitatively, the equation of motion is solved in terms of wp-Weierstrass elliptic function. Thus, we find the deflection angle for photons without using any approximation, which is a novel result for this kind of gravity.

  12. Virasoro conformal blocks and thermality from classical background fields

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Fitzpatrick, A. Liam; Kaplan, Jared; Walters, Matthew T.

    2015-11-30

    We show that in 2d CFTs at large central charge, the coupling of the stress tensor to heavy operators can be re-absorbed by placing the CFT in a non-trivial background metric. This leads to a more precise computation of the Virasoro conformal blocks between heavy and light operators, which are shown to be equivalent to global conformal blocks evaluated in the new background. We also generalize to the case where the operators carry U(1) charges. The refined Virasoro blocks can be used as the seed for a new Virasoro block recursion relation expanded in the heavy-light limit. Furthermore, we commentmore » on the implications of our results for the universality of black hole thermality in AdS3 , or equivalently, the eigenstate thermalization hypothesis for CFT2 at large central charge.« less

  13. Low-cost conformable storage to maximize vehicle range

    SciTech Connect (OSTI)

    Graham, R.P.

    1998-01-01

    Liquefied petroleum gas (LPG) and compressed natural gas (CNG) are currently the leading fuel contenders for converting vehicles from gasoline and diesel to alternative fuels. Two factors that inhibit conversion are additional vehicle costs and reduced range compared to gasoline. In overcoming these barriers, a key element of the alternative fuel system becomes the storage tank for these pressurized fuels. Using cylindrical pressure vessels is the conventional approach, but they do not package well in the available vehicle volume. Thiokol Corporation has developed and is now producing a conformable (non-cylindrical) aluminum storage system for LPG vans. This system increases fuel storage in a given rectangular envelope. The goal of this project was to develop the technology for a lower cost conformable tank made of injection-molded plastic. Much of the cost of the aluminum conformable tank is in the fabrication because several weld seams are required. The injection-molding process has the potential to greatly reduce the fabrication costs. The requirements of a pressurized fuel tank on a vehicle necessitate the proper combination of material properties. Material selection and tank design must be optimized for maximum internal volume and minimum material use to be competitive with other technologies. The material and the design must also facilitate the injection-molding process. Prototype tanks must be fabricated to reveal molding problems, prove solutions, and measure results. In production, efficient fabrication will be key to making these tanks cost competitive. The work accomplished during this project has demonstrated that conformable LPG tanks can be molded with thermoplastics. However, to achieve a competitive tank, improvements are needed in the effective material strength. If these improvements can be made, molded plastics should produce a lower cost tank that can store more LPG on a vehicle than conventional cylinders.

  14. Amino resin modified polymer gels for permeability control

    SciTech Connect (OSTI)

    Shu, P.

    1989-03-07

    An aqueous cross-linked gel formed by a polysaccharide polymer, an aminoplast resin, and transitional metal ions is described, comprising: (a) water; (b) about 0.2 to about 5.0 wt. percent of a cross-linkable polysaccharide polymer selected from the group consisting of polysaccharide bipolymers and cellulose derivatives having at least one functional group selected from a member of the group consisting of an amine, an amide, a hydroxyl, or a thiol group; (c) about 0.02 to about 5.0 wt. percent of an aminoplast resin which reinforces the polymer; and (d) sufficient transitional metal ions to form a gel of a size and strength sufficient to close one or more permeable zones in a formation under substantially all pH conditions.

  15. Electrophoretic extraction of proteins from two-dimensional electrophoresis gel spots

    DOE Patents [OSTI]

    Zhang, Jian-Shi (Shanghai, CN); Giometti, Carol S. (Glenview, IL); Tollaksen, Sandra L. (Montgomery, IL)

    1989-01-01

    After two-dimensional electrophoresis of proteins or the like, resulting in a polyacrylamide gel slab having a pattern of protein gel spots thereon, an individual protein gel spot is cored out from the slab, to form a gel spot core which is placed in an extraction tube, with a dialysis membrane across the lower end of the tube. Replicate gel spots can be cored out from replicate gel slabs and placed in the extraction tube. Molten agarose gel is poured into the extraction tube where the agarose gel hardens to form an immobilizing gel, covering the gel spot cores. The upper end portion of the extraction tube is filled with a volume of buffer solution, and the upper end is closed by another dialysis membrane. Upper and lower bodies of a buffer solution are brought into contact with the upper and lower membranes and are provided with electrodes connected to the positive and negative terminals of a DC power supply, thereby producing an electrical current which flows through the upper membrane, the volume of buffer solution, the agarose, the gel spot cores and the lower membrane. The current causes the proteins to be extracted electrophoretically from the gel spot cores, so that the extracted proteins accumulate and are contained in the space between the agarose gel and the upper membrane. A high percentage extraction of proteins is achieved. The extracted proteins can be removed and subjected to partial digestion by trypsin or the like, followed by two-dimensional electrophoresis, resulting in a gel slab having a pattern of peptide gel spots which can be cored out and subjected to electrophoretic extraction to extract individual peptides.

  16. Stable, concentrated solutions of polyaniline using amines as gel inhibitors

    DOE Patents [OSTI]

    Wang, Hsing-Lin (Los Alamos, NM); Mattes, Benjamin R. (Tesuque, NM)

    2002-01-01

    Stable, concentrated solutions of high-molecular weight polyaniline using amines as gel inhibitors. Certain amine compounds (gel inhibitors) are used to form highly concentrated, stable solutions of the emeraldine base form of polyaniline in numerous organic solvents from which coatings, films and fibers are readily prepared without problems associated with rapid gelation which occurs when concentrated solutions are attempted without the use of the gel inhibitors of the present invention. Tertiary amines are used to solubilize low-molecular weight fractions (M.sub.w <120,000, M.sub.n <30,000) of the pernigraniline, emeraldine, and leucoemeraldine oxidation states of polyaniline as concentrated (>20 wt. %) polyaniline solutions, while primary and secondary amines are used to produce solutions having 15-40 wt % of high-molecular weight polyaniline [M.sub.w.gtoreq.120,000, M.sub.n.gtoreq.30,000]. Concentrated solutions of polyaniline co-polymers or ring and/or nitrogen-substituted polyanilines may also be prepared.

  17. Expanding the Repertoire of Chalcogenide Nanocrystal Networks: Ag2Se Gels

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

    and Aerogels by Cation Exchange Reactions | Energy Frontier Research Centers Expanding the Repertoire of Chalcogenide Nanocrystal Networks: Ag2Se Gels and Aerogels by Cation Exchange Reactions Home Author: Q. Yao, I. U. Arachchige, S. L. Brock Year: 2009 Abstract: Cation exchange is shown to be a simple and efficient method to prepare nanostructured Ag2Se gels and aerogels from CdSe gel precursors. Treatment of CdSe wet gels with AgNO3yields, for the first time, Ag2Se gels, and these are

  18. Demonstration of DeconGel (TM) at the Oak Ridge National Laboratory

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

    Building 2026 | Department of Energy DeconGel (TM) at the Oak Ridge National Laboratory Building 2026 Demonstration of DeconGel (TM) at the Oak Ridge National Laboratory Building 2026 Cellular Bioengineering Inc. (CBI) has developed decontamination gels (DeconGel(tm) 1101, 1120 and 1121) that when dried allow efficient removal of contamination from surfaces in a peelable film that can be easily disposed. PDF icon Demonstration of DeconGelTM at the Oak Ridge National Laboratory Building 2026

  19. Initial Radionuclide Inventories

    SciTech Connect (OSTI)

    H. Miller

    2004-09-19

    The purpose of this analysis is to provide an initial radionuclide inventory (in grams per waste package) and associated uncertainty distributions for use in the Total System Performance Assessment for the License Application (TSPA-LA) in support of the license application for the repository at Yucca Mountain, Nevada. This document is intended for use in postclosure analysis only. Bounding waste stream information and data were collected that capture probable limits. For commercially generated waste, this analysis considers alternative waste stream projections to bound the characteristics of wastes likely to be encountered using arrival scenarios that potentially impact the commercial spent nuclear fuel (CSNF) waste stream. For TSPA-LA, this radionuclide inventory analysis considers U.S. Department of Energy (DOE) high-level radioactive waste (DHLW) glass and two types of spent nuclear fuel (SNF): CSNF and DOE-owned (DSNF). These wastes are placed in two groups of waste packages: the CSNF waste package and the codisposal waste package (CDSP), which are designated to contain DHLW glass and DSNF, or DHLW glass only. The radionuclide inventory for naval SNF is provided separately in the classified ''Naval Nuclear Propulsion Program Technical Support Document'' for the License Application. As noted previously, the radionuclide inventory data presented here is intended only for TSPA-LA postclosure calculations. It is not applicable to preclosure safety calculations. Safe storage, transportation, and ultimate disposal of these wastes require safety analyses to support the design and licensing of repository equipment and facilities. These analyses will require radionuclide inventories to represent the radioactive source term that must be accommodated during handling, storage and disposition of these wastes. This analysis uses the best available information to identify the radionuclide inventory that is expected at the last year of last emplacement, currently identified as 2030 and 2033, depending on the type of waste. TSPA-LA uses the results of this analysis to decay the inventory to the year of repository closure projected for the year of 2060.

  20. Facilities Initiatives | Department of Energy

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

    Facilities Initiatives Facilities Initiatives The Headquarters Office of Administration, Office of Logistics and Facility Operations, has several energy saving initiatives in place or in progress at their Headquarters' facilities in the Forrestal Building in Washington, DC, and Germantown Maryland. Many of these initiatives are part of their Energy Savings Performance Contract (ESPC). ESPCs allow Federal agencies to accomplish energy savings projects without up-front capital costs and without

  1. Endstates Initiative | Department of Energy

    Energy Savers [EERE]

    Endstates Initiative Endstates Initiative Endstates Initiative Scientific and technical, institutional and regulatory, and closure management challenges are currently hindering cleanup and closure of remaining environmental legacy waste sites across the Department of Energy (DOE) complex. There are no simple solutions for these integrated challenges and they demand innovative scientific and technical solutions and approaches, developed with the regulatory community. DOE Office of Environmental

  2. Microstructure and nonlinear signatures of yielding in a heterogeneous colloidal gel under large amplitude oscillatory shear

    SciTech Connect (OSTI)

    Kim, Juntae; Helgeson, Matthew E.; Merger, Dimitri; Wilhelm, Manfred

    2014-09-01

    We investigate yielding in a colloidal gel that forms a heterogeneous structure, consisting of a two-phase bicontinuous network of colloid-rich domains of fractal clusters and colloid-poor domains. Combining large amplitude oscillatory shear measurements with simultaneous small and ultra-small angle neutron scattering (rheo-SANS/USANS), we characterize both the nonlinear mechanical processes and strain amplitude-dependent microstructure underlying yielding. We observe a broad, three-stage yielding process that evolves over an order of magnitude in strain amplitude between the onset of nonlinearity and flow. Analyzing the intracycle response as a sequence of physical processes reveals a transition from elastic straining to elastoplastic thinning (which dominates in region I) and eventually yielding (which evolves through region II) and flow (which saturates in region III), and allows quantification of instantaneous nonlinear parameters associated with yielding. These measures exhibit significant strain rate amplitude dependence above a characteristic frequency, which we argue is governed by poroelastic effects. Correlating these results with time-averaged rheo-USANS measurements reveals that the material passes through a cascade of structural breakdown from large to progressively smaller length scales. In region I, compression of the fractal domains leads to the formation of large voids. In regions II and III, cluster-cluster correlations become increasingly homogeneous, suggesting breakage and eventually depercolation of intercluster bonds at the yield point. All significant structural changes occur on the micron-scale, suggesting that large-scale rearrangements of hundreds or thousands of particles, rather than the homogeneous rearrangement of particle-particle bonds, dominate the initial yielding of heterogeneous colloidal gels.

  3. IMPROVED APPROACHES TO DESIGN OF POLYMER GEL TREATMENTS IN MATURE OIL FIELDS: FIELD DEMONSTRATION IN DICKMAN FIELD, NESS COUNTY, KANSAS

    SciTech Connect (OSTI)

    Ronald Fowler

    2004-11-30

    This report describes the results of the one-year project entitled ''Improved Approaches to Design of Polymer Gel Treatments in Mature Oil Fields: Field Demonstration in Dickman Field, Ness County, Kansas''. The project was a 12-month collaboration of Grand Mesa Operating Company (a small independent), TIORCO Inc. (a company focused on improved recovery technology) and the University of Kansas. The study undertook tasks to determine an optimum polymer gel treatment design in Mississippian reservoirs, demonstrate application, and evaluate the success of the program. The project investigated geologic and engineering parameters and cost-effective technologies required for design and implementation of effective polymer gel treatment programs in the Mississippian reservoir in the Midcontinent. The majority of Mississippian production in Kansas occurs at or near the top of the Mississippian section just below the regional sub-Pennsylvanian unconformity and karst surface. Dickman Field with the extremely high water cuts and low recovery factors is typical of Mississippian reservoirs. Producibility problems in these reservoirs include inadequate reservoir characterization, drilling and completion design problems, and most significantly extremely high water cuts and low recovery factors that place continued operations at or near their economic limits. Geologic, geophysical and engineering data were integrated to provide a technical foundation for candidate selection and treatment design. Data includes core, engineering data, and 3D seismic data. Based on technical and economic considerations a well was selected for gel-polymer treatment (Grand Mesa Operating Company Tilley No.2). The treatment was not successful due to the small amount of polymer that could be injected. Data from the initial well and other candidates in the demonstration area was analyzed using geologic, geophysical and engineering data. Based on the results of the treatment and the integrated reservoir characterization it was determined that a second polymer-gel treatment could not be justified. The Mississippian reservoir at Dickman Field is much more complex than originally anticipated with numerous reservoir compartments and potential attic oil beneath the irregular Mississippian karst. It appears that remaining oil in place could be best recovered using improved oil recovery techniques such as target infill drilling and horizontal wells.

  4. Florida Hydrogen Initiative

    SciTech Connect (OSTI)

    Block, David L

    2013-06-30

    The Florida Hydrogen Initiative (FHI) was a research, development and demonstration hydrogen and fuel cell program. The FHI program objectives were to develop Florida?s hydrogen and fuel cell infrastructure and to assist DOE in its hydrogen and fuel cell activities The FHI program funded 12 RD&D projects as follows: Hydrogen Refueling Infrastructure and Rental Car Strategies -- L. Lines, Rollins College This project analyzes strategies for Florida's early stage adaptation of hydrogen-powered public transportation. In particular, the report investigates urban and statewide network of refueling stations and the feasibility of establishing a hydrogen rental-car fleet based in Orlando. Methanol Fuel Cell Vehicle Charging Station at Florida Atlantic University ? M. Fuchs, EnerFuel, Inc. The project objectives were to design, and demonstrate a 10 kWnet proton exchange membrane fuel cell stationary power plant operating on methanol, to achieve an electrical energy efficiency of 32% and to demonstrate transient response time of less than 3 milliseconds. Assessment of Public Understanding of the Hydrogen Economy Through Science Center Exhibits, J. Newman, Orlando Science Center The project objective was to design and build an interactive Science Center exhibit called: ?H2Now: the Great Hydrogen Xchange?. On-site Reformation of Diesel Fuel for Hydrogen Fueling Station Applications ? A. Raissi, Florida Solar Energy Center This project developed an on-demand forecourt hydrogen production technology by catalytically converting high-sulfur hydrocarbon fuels to an essentially sulfur-free gas. The removal of sulfur from reformate is critical since most catalysts used for the steam reformation have limited sulfur tolerance. Chemochromic Hydrogen Leak Detectors for Safety Monitoring ? N. Mohajeri and N. Muradov, Florida Solar Energy Center This project developed and demonstrated a cost-effective and highly selective chemochromic (visual) hydrogen leak detector for safety monitoring at any facility engaged in transport, handling and use of hydrogen. Development of High Efficiency Low Cost Electrocatalysts for Hydrogen Production and PEM Fuel Cell Applications ? M. Rodgers, Florida Solar Energy Center The objective of this project was to decrease platinum usage in fuel cells by conducting experiments to improve catalyst activity while lowering platinum loading through pulse electrodeposition. Optimum values of several variables during electrodeposition were selected to achieve the highest electrode performance, which was related to catalyst morphology. Understanding Mechanical and Chemical Durability of Fuel Cell Membrane Electrode Assemblies ? D. Slattery, Florida Solar Energy Center The objective of this project was to increase the knowledge base of the degradation mechanisms for membranes used in proton exchange membrane fuel cells. The results show the addition of ceria (cerium oxide) has given durability improvements by reducing fluoride emissions by an order of magnitude during an accelerated durability test. Production of Low-Cost Hydrogen from Biowaste (HyBrTec?) ? R. Parker, SRT Group, Inc., Miami, FL This project developed a hydrogen bromide (HyBrTec?) process which produces hydrogen bromide from wet-cellulosic waste and co-produces carbon dioxide. Eelectrolysis dissociates hydrogen bromide producing recyclable bromine and hydrogen. A demonstration reactor and electrolysis vessel was designed, built and operated. Development of a Low-Cost and High-Efficiency 500 W Portable PEMFC System ? J. Zheng, Florida State University, H. Chen, Bing Energy, Inc. The objectives of this project were to develop a new catalyst structures comprised of highly conductive buckypaper and Pt catalyst nanoparticles coated on its surface and to demonstrate fuel cell efficiency improvement and durability and cell cost reductions in the buckypaper based electrodes. Development of an Interdisciplinary Hydrogen and Fuel Cell Technology Academic Program ? J. Politano, Florida Institute of Technology, Melbourne, FL This project developed a hydrogen and fuel cell technology academic program at Florida Institute of Technology in Melbourne, Florida. Design and Development of an Advanced Hydrogen Storage System using Novel Materials ? E. Stefanakos, University of South Florida The goal of this project was to design and develop novel conducting polymeric nanomaterials for on-board hydrogen storage. The project approach was to examine synthesis of polyaniline solid state hydrogen storage materials. Advanced HiFoil ? Bipolar Plates ? J. Braun, M. Fuchs, EnerFuel, Inc. The goal of this project was to provide a durable, low cost bipolar plate for high temperature proton exchange membrane fuel cells. The project results produced a durable, low cost bipolar plate with very high in-plane thermal conductivity.

  5. Laser induced popcornlike conformational transition of nanodiamond as a nanoknife

    SciTech Connect (OSTI)

    Chang, C.-C.; Chen, P.-H.; Chu, H.-L.; Lee, T.-C.; Chou, C.-C.; Chao, J.-I; Su, C.-Y.; Chen, J.S.; Tsai, J.-S.; Tsai, C.-M.; Ho, Y.-P.; Sun, K.W.; Cheng, C.-L.; Chen, F.-R.

    2008-07-21

    Nanodiamond (ND) is surrounded by layers of graphite on its surface. This unique structure feature creates unusual fluorescence spectra, which can be used as an indicator to monitor its surface modification. Meanwhile, the impurity, nitroso (C-N=O) inside the ND can be photolyzed by two-photon absorption, releasing NO to facilitate the formation of a sp{sup 3} diamond structure in the core of ND and transforming it into a sp{sup 2} graphite structure. Such a conformational transition enlarges the size of ND from 8 to 90 nm, resulting in a popcornlike structure. This transition reaction may be useful as nanoknives in biomedical application.

  6. A non-conforming 3D spherical harmonic transport solver

    SciTech Connect (OSTI)

    Van Criekingen, S.

    2006-07-01

    A new 3D transport solver for the time-independent Boltzmann transport equation has been developed. This solver is based on the second-order even-parity form of the transport equation. The angular discretization is performed through the expansion of the angular neutron flux in spherical harmonics (PN method). The novelty of this solver is the use of non-conforming finite elements for the spatial discretization. Such elements lead to a discontinuous flux approximation. This interface continuity requirement relaxation property is shared with mixed-dual formulations such as the ones based on Raviart-Thomas finite elements. Encouraging numerical results are presented. (authors)

  7. Structure of the protein core of translation initiation factor 2 in apo, GTP-bound and GDP-bound forms

    SciTech Connect (OSTI)

    Simonetti, Angelita; Fabbretti, Attilio; Hazemann, Isabelle; Jenner, Lasse; Gualerzi, Claudio O.; Klaholz, Bruno P.

    2013-06-01

    The crystal structures of the eubacterial translation initiation factor 2 in apo form and with bound GDP and GTP reveal conformational changes upon nucleotide binding and hydrolysis, notably of the catalytically important histidine in the switch II region. Translation initiation factor 2 (IF2) is involved in the early steps of bacterial protein synthesis. It promotes the stabilization of the initiator tRNA on the 30S initiation complex (IC) and triggers GTP hydrolysis upon ribosomal subunit joining. While the structure of an archaeal homologue (a/eIF5B) is known, there are significant sequence and functional differences in eubacterial IF2, while the trimeric eukaryotic IF2 is completely unrelated. Here, the crystal structure of the apo IF2 protein core from Thermus thermophilus has been determined by MAD phasing and the structures of GTP and GDP complexes were also obtained. The IF2–GTP complex was trapped by soaking with GTP in the cryoprotectant. The structures revealed conformational changes of the protein upon nucleotide binding, in particular in the P-loop region, which extend to the functionally relevant switch II region. The latter carries a catalytically important and conserved histidine residue which is observed in different conformations in the GTP and GDP complexes. Overall, this work provides the first crystal structure of a eubacterial IF2 and suggests that activation of GTP hydrolysis may occur by a conformational repositioning of the histidine residue.

  8. Magnetic Resonance Imaging of Gel-cast Ceramic Composites

    DOE R&D Accomplishments [OSTI]

    Dieckman, S. L.; Balss, K. M.; Waterfield, L. G.; Jendrzejczyk, J. A.; Raptis, A. C.

    1997-01-16

    Magnetic resonance imaging (MRI) techniques are being employed to aid in the development of advanced near-net-shape gel-cast ceramic composites. MRI is a unique nondestructive evaluation tool that provides information on both the chemical and physical properties of materials. In this effort, MRI imaging was performed to monitor the drying of porous green-state alumina - methacrylamide-N.N`-methylene bisacrylamide (MAM-MBAM) polymerized composite specimens. Studies were performed on several specimens as a function of humidity and time. The mass and shrinkage of the specimens were also monitored and correlated with the water content.

  9. Project report to STB/UO, Northern New Mexico Community College two- year college initiative: Biotechnology

    SciTech Connect (OSTI)

    1996-03-01

    This report summarizes the experiences gained in a project involving faculty direct undergraduate research focused on biotechnology and its applications. The biology program at Northern New Mexico Community College has been involved in screening for mutations in human DNA and has developed the ability to perform many standard and advanced molecular biology techniques. Most of these are based around the polymerase chain reaction (PCR) and include the use of single strand conformation polymorphism analysis (SSCP), denaturing gradient gel electrophoresis (DGGE) in the screening for mutant DNA molecules, and the capability to sequence PCR generated fragments of DNA using non-isotopic imaging. At Northern, these activities have a two-fold objective: (1) to bring current molecular biology techniques to the teaching laboratory, and (2) to support the training of minority undergraduates in research areas that stimulate them to pursue advanced degrees in the sciences.

  10. Clean Energy Manufacturing Initiative Events | Department of Energy

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

    Initiative Events Clean Energy Manufacturing Initiative Events

  11. R{sup 2}-inflation with conformal SM Higgs field

    SciTech Connect (OSTI)

    Gorbunov, Dmitry; Tokareva, Anna E-mail: tokareva@ms2.inr.ac.ru

    2013-12-01

    We introduce conformal coupling of the Standard Model Higgs field to gravity and discuss the subsequent modification of R{sup 2}-inflation. The main observation is a lower temperature of reheating which happens mostly through scalaron decays into gluons due to the conformal (trace) anomaly. This modifies all predictions of the original R{sup 2}-inflation. To the next-to-leading order in slow roll parameters we calculate amplitudes and indices of scalar and tensor perturbations produced at inflation. The results are compared to the next-to-leading order predictions of R{sup 2}-inflation with minimally coupled Higgs field and of Higgs-inflation. We discuss additional features in gravity wave signal that may help to distinguish the proposed variant of R{sup 2}-inflation. Remarkably, the features are expected in the region available for study at future experiments like BBO and DECIGO. Finally, we check that (meta)stability of electroweak vacuum in the cosmological model is consistent with recent results of searches for the Higgs boson at LHC.

  12. Workplace Charging Program and Initiatives

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

    Program and Initiatives Evan Kolkos New York Power Authority Clean Energy Technology 2008 All Rights Reserved NYPA: Who We Are * Largest state public power organization in the...

  13. Army Energy Initiatives Task Force

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation—given at the Fall 2011 Federal Utility Partnership Working Group (FUPWG) meeting—covers the Army Energy Initiatives Task Force.

  14. Innovative Manufacturing Initiative Recognition Day

    Broader source: Energy.gov [DOE]

    The Innovative Manufacturing Initiative (IMI) Recognition Day (held in Washington, DC on June 20, 2012) showcased IMI projects selected by the Energy Department to help American manufacturers...

  15. Structurally stable gel bead containing entrapped enzyme and method for manufacture thereof

    DOE Patents [OSTI]

    Woodward, J.

    1998-12-08

    This research provides a structurally stable gel bead containing an entrapped enzyme and a method for its manufacture. The enzyme is covalently cross-linked to gelatin in the presence of glutaraldehyde prior to the formation of the gel bead, to prevent leakage of the enzyme. Propylene glycol alginate is then added to the mixture. Once the gel beads are formed, they are then soaked in glutaraldehyde, which imparts structural stability to the gel beads. This method can be used with many types of enzymes, such as proteases, carbohydrases, proteases, ligases, isomerases, oxidoreductases, and specialty enzymes. These and other enzymes can be immobilized in the gel beads and utilized in a number of enzymatic processes. Exogenously added ions are not required to maintain the structural stability of these gel beads. 7 figs.

  16. Structurally stable gel bead containing entrapped enzyme and method for manufacture thereof

    DOE Patents [OSTI]

    Woodward, Jonathan (Oak Ridge, TN)

    1998-01-01

    A structurally stable gel bead containing an entrapped enzyme and a method for its manufacture. The enzyme is covalently cross-linked to gelatin in the presence of glutaraldehyde prior to the formation of the gel bead, to prevent leakage of the enzyme. Propylene glycol alginate is then added to the mixture. Once the gel beads are formed, they are then soaked in glutaraldehyde, which imparts structural stability to the gel beads. This method can be used with many types of enzymes, such as proteases, carbohydrases, proteases, ligases, isomerases, oxidoreductases, and specialty enzymes. These and other enzymes can be immobilized in the gel beads and utilized in a number of enzymatic processes. Exogenously added ions are not required to maintain the structural stability of these gel beads.

  17. Multidisciplinary University Research Initiative: High Operating...

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

    Research Initiative: High Operating Temperature Fluids Multidisciplinary University Research Initiative: High Operating Temperature Fluids Multidisciplinary University ...

  18. Stimulus sensitive gel with radioisotope and methods of making

    DOE Patents [OSTI]

    Weller, Richard E. (Selah, WA) [Selah, WA; Lind, Michael A. (Kent, WA) [Kent, WA; Fisher, Darrell R. (Richland, WA) [Richland, WA; Gutowska, Anna (Richland, WA) [Richland, WA; Campbell, Allison A. (Kennewick, WA) [Kennewick, WA

    2001-10-02

    The present invention is a thermally reversible stimulus-sensitive gel or gelling copolymer radioisotope carrier that is a linear random copolymer of an [meth]acrylamide derivative and a hydrophilic comonomer, wherein the linear random copolymer is in the form of a plurality of linear chains having a plurality of molecular weights greater than or equal to a minimum gelling molecular weight cutoff. Addition of a biodegradable backbone and/or a therapeutic agent imparts further utility. The method of the present invention for making a thermally reversible stimulus-sensitive gelling copolymer radionuclcide carrier has the steps of: (a) mixing a stimulus-sensitive reversible gelling copolymer with an aqueous solvent as a stimulus-sensitive reversible gelling solution; and (b) mixing a radioisotope with said stimulus-sensitive reversible gelling solution as said radioisotope carrier. The gel is enhanced by either combining it with a biodegradable backbone and/or a therapeutic agent in a gelling solution made by mixing the copolymer with an aqueous solvent.

  19. Stimulus sensitive gel with radioisotope and methods of making

    DOE Patents [OSTI]

    Weller, Richard E.; Lind, Michael A.; Fisher, Darrell R.; Gutowska, Anna; Campbell, Allison A.

    2005-03-22

    The present invention is a thermally reversible stimulus-sensitive gel or gelling copolymer radioisotope carrier that is a linear random copolymer of an [meth-]acrylamide derivative and a hydrophilic comonomer, wherein the linear random copolymer is in the form of a plurality of linear chains having a plurality of molecular weights greater than or equal to a minimum gelling molecular weight cutoff. Addition of a biodegradable backbone and/or a therapeutic agent imparts further utility. The method of the present invention for making a thermally reversible stimulus-sensitive gelling copolymer radionuclcide carrier has the steps of: (a) mixing a stimulus-sensitive reversible gelling copolymer with an aqueous solvent as a stimulus-sensitive reversible gelling solution; and (b) mixing a radioisotope with said stimulus-sensitive reversible gelling solution as said radioisotope carrier. The gel is enhanced by either combining it with a biodegradable backbone and/or a therapeutic agent in a gelling solution made by mixing the copolymer with an aqueous solvent.

  20. Polymer gel electrolytes for application in aluminum deposition and rechargeable aluminum ion batteries

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Sun, Xiao -Guang; Fang, Youxing; Jiang, Xueguang; Yoshii, Kazuki; Tsuda, Tetsuya; Dai, Sheng

    2015-10-22

    Polymer gel electrolyte using AlCl3 complexed acrylamide as functional monomer and ionic liquids based on acidic mixture of 1-ethyl-3-methylimidazolium chloride (EMImCl) and AlCl3 as plasticizer has been successfully prepared for the first time by free radical polymerization. Aluminum deposition is successfully obtained with a polymer gel membrane contianing 80 wt% ionic liquid. As a result, the polymer gel membranes are also good candidates for rechargeable aluminum ion batteries.

  1. Ammonia Sensors Based on Doped-Sol-Gel-Tipped Optical Fibers for Catalyst

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

    System Diagnostics | Department of Energy Sensors Based on Doped-Sol-Gel-Tipped Optical Fibers for Catalyst System Diagnostics Ammonia Sensors Based on Doped-Sol-Gel-Tipped Optical Fibers for Catalyst System Diagnostics This work focuses on the development and application of optical fibers sensors tip-coated with sol gels that sequester a transducing material whose optical response is sensitive to NH3. PDF icon p-04_connatser.pdf More Documents & Publications Vehicle Technologies Office

  2. Sol-gel deposition of buffer layers on biaxially textured metal substances

    Office of Scientific and Technical Information (OSTI)

    (Patent) | SciTech Connect Sol-gel deposition of buffer layers on biaxially textured metal substances Citation Details In-Document Search Title: Sol-gel deposition of buffer layers on biaxially textured metal substances A method is disclosed for forming a biaxially textured buffer layer on a biaxially oriented metal substrate by using a sol-gel coating technique followed by pyrolyzing/annealing in a reducing atmosphere. This method is advantageous for providing substrates for depositing

  3. Clean Electricity Initiatives in California

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

    Edward Randolph Director, Energy Division California Public Utilities Commission July 14, 2014 2014 EIA Energy Conference Clean Electricity Policy Initiatives In California (Partial) * Wholesale Renewables : - Renewables Portfolio Standard - Feet in Tariffs (RAM & ReMAT) - All source procurement (under development) * Customer Renewable Generation - California Solar Initiative - Net Energy Metering - Green Tariffs - Energy Efficiency - Demand Response - Rate Reform - Storage - Retirement of

  4. SERI Desiccant Cooling Test Facility. Status report. Preliminary data on the performance of a rotary parallel-passage silica-gel dehumidifier

    SciTech Connect (OSTI)

    Schultz, K.J.

    1986-04-01

    This report describes the SERI Desiccant Cooling Test Facility. The facility can test bench-scale rotary dehumidifiers over a wide range of controlled conditions. We constructed and installed in the test loop a prototype parallel-passage rotary dehumidifier that has spirally wound polyester tape coated with silica gel. The initial tests gave satisfactory results indicating that approximately 90% of the silica gel was active and the overall Lewis number of the wheel was near unity. The facility has several minor difficulties including an inability to control humidity satisfactorily and nonuniform and highly turbulent inlet velocities. To completely validate the facility requires a range of dehumidifier designs. Several choices are available including constructing a second parallel-passage dehumidifier with the passage spacing more uniform.

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

    SciTech Connect (OSTI)

    Mukul Sharma; Steven Bryant; Chun Huh

    2008-03-31

    There is an increasing opportunity to recover bypassed oil from depleted, mature oilfields in the US. The recovery factor in many reservoirs is low due to inefficient displacement of the oil by injected fluids (typically water). The use of chemical flooding methods to increase recovery efficiencies is severely constrained by the inability of the injected chemicals to contact the bypassed oil. Low sweep efficiencies are the primary cause of low oil recoveries observed in the field in chemical flooding operations even when lab studies indicate high oil recovery efficiency. Any technology that increases the ability of chemical flooding agents to better contact the remaining oil and reduce the amount of water produced in conjunction with the produced oil will have a significant impact on the cost of producing oil domestically in the US. This translates directly into additional economically recoverable reserves, which extends the economic lives of marginal and mature wells. The objective of this research project was to develop a low-cost, pH-triggered polymer for use in IOR processes to improve reservoir sweep efficiency and reservoir conformance in chemical flooding. Rheological measurements made on the polymer solution, clearly show that it has a low viscosity at low pH and exhibits a sudden increase in viscosity (by 2 orders of magnitude or more) at a pH of 3.5 to 4. This implies that the polymer would preferentially flow into zones containing water since the effective permeability to water is highest in these zones. As the pH of the zone increases due to the buffering capacity of the reservoir rock, the polymer solution undergoes a liquid to gel transition causing a sharp increase in the viscosity of the polymer solution in these zones. This allows operationally robust, in-depth conformance treatment of such water bearing zones and better mobility control. The rheological properties of HPAM solutions were measured. These include: steady-shear viscosity and viscoelastic behavior as functions of pH; shear rate; polymer concentration; salinity, including divalent ion effects; polymer molecular weight; and degree of hydrolysis. A comprehensive rheological model was developed for HPAM solution rheology in terms of: shear rate; pH; polymer concentration; and salinity, so that the spatial and temporal changes in viscosity during the polymer flow in the reservoir can be accurately modeled. A series of acid coreflood experiments were conducted to understand the geochemical reactions relevant for both the near-wellbore injection profile control and for conformance control applications. These experiments showed that the use hydrochloric acid as a pre-flush is not viable because of the high reaction rate with the rock. The use of citric acid as a pre-flush was found to be quite effective. This weak acid has a slow rate of reaction with the rock and can buffer the pH to below 3.5 for extended periods of time. With the citric acid pre-flush the polymer could be efficiently propagated through the core in a low pH environment i.e. at a low viscosity. The transport of various HPAM solutions was studied in sandstones, in terms of permeability reduction, mobility reduction, adsorption and inaccessible pore volume with different process variables: injection pH, polymer concentration, polymer molecular weight, salinity, degree of hydrolysis, and flow rate. Measurements of polymer effluent profiles and tracer tests show that the polymer retention increases at the lower pH. A new simulation capability to model the deep-penetrating mobility control or conformance control using pH-sensitive polymer was developed. The core flood acid injection experiments were history matched to estimate geochemical reaction rates. Preliminary scale-up simulations employing linear and radial geometry floods in 2-layer reservoir models were conducted. It is clearly shown that the injection rate of pH-sensitive polymer solutions can be significantly increased by injecting it at a pH below 3.5 (at a fixed bottom-hole pressure). This improvement in injectivity by a fa

  6. Exposing hidden alternative backbone conformations in X-ray crystallography using qFit

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Keedy, Daniel A.; Fraser, James S.; van den Bedem, Henry; Shehu, Amarda

    2015-10-27

    Proteins must move between different conformations of their native ensemble to perform their functions. Crystal structures obtained from high-resolution X-ray diffraction data reflect this heterogeneity as a spatial and temporal conformational average. Although movement between natively populated alternative conformations can be critical for characterizing molecular mechanisms, it is challenging to identify these conformations within electron density maps. Alternative side chain conformations are generally well separated into distinct rotameric conformations, but alternative backbone conformations can overlap at several atomic positions. Our model building program qFit uses mixed integer quadratic programming (MIQP) to evaluate an extremely large number of combinations of sidechainmore » conformers and backbone fragments to locally explain the electron density. Here, we describe two major modeling enhancements to qFit: peptide flips and alternative glycine conformations. We find that peptide flips fall into four stereotypical clusters and are enriched in glycine residues at the n+1 position. The potential for insights uncovered by new peptide flips and glycine conformations is exemplified by HIV protease, where different inhibitors are associated with peptide flips in the “flap” regions adjacent to the inhibitor binding site. Our results paint a picture of peptide flips as conformational switches, often enabled by glycine flexibility, that result in dramatic local rearrangements. Our results furthermore demonstrate the power of large-scale computational analysis to provide new insights into conformational heterogeneity. Furthermore, improved modeling of backbone heterogeneity with high-resolution X-ray data will connect dynamics to the structure-function relationship and help drive new design strategies for inhibitors of biomedically important systems.« less

  7. Exposing hidden alternative backbone conformations in X-ray crystallography using qFit

    SciTech Connect (OSTI)

    Keedy, Daniel A.; Fraser, James S.; van den Bedem, Henry; Shehu, Amarda

    2015-10-27

    Proteins must move between different conformations of their native ensemble to perform their functions. Crystal structures obtained from high-resolution X-ray diffraction data reflect this heterogeneity as a spatial and temporal conformational average. Although movement between natively populated alternative conformations can be critical for characterizing molecular mechanisms, it is challenging to identify these conformations within electron density maps. Alternative side chain conformations are generally well separated into distinct rotameric conformations, but alternative backbone conformations can overlap at several atomic positions. Our model building program qFit uses mixed integer quadratic programming (MIQP) to evaluate an extremely large number of combinations of sidechain conformers and backbone fragments to locally explain the electron density. Here, we describe two major modeling enhancements to qFit: peptide flips and alternative glycine conformations. We find that peptide flips fall into four stereotypical clusters and are enriched in glycine residues at the n+1 position. The potential for insights uncovered by new peptide flips and glycine conformations is exemplified by HIV protease, where different inhibitors are associated with peptide flips in the “flap” regions adjacent to the inhibitor binding site. Our results paint a picture of peptide flips as conformational switches, often enabled by glycine flexibility, that result in dramatic local rearrangements. Our results furthermore demonstrate the power of large-scale computational analysis to provide new insights into conformational heterogeneity. Furthermore, improved modeling of backbone heterogeneity with high-resolution X-ray data will connect dynamics to the structure-function relationship and help drive new design strategies for inhibitors of biomedically important systems.

  8. GE funds initiative to support STEM initiatives in Oklahoma ...

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

    STEM Empowers OK: Initiative to enrich STEM education in Oklahoma Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share...

  9. Writing Effective Initial Summary Ratings Initial Summary Rating (ISR)

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

    Initial Summary Ratings Initial Summary Rating (ISR) At the end of the performance cycle, the rating official must prepare an ISR in ePerformance for each SES member who has completed at least 90 days on an established performance plan. Rating officials must take into account the SES member's accomplishments achieved during the performance cycle and the impact to the organization's performance. Rating officials must appraise executives realistically and fairly and avoid ratings inflation.

  10. Method and apparatus for enhancing vortex pinning by conformal crystal arrays

    DOE Patents [OSTI]

    Janko, Boldizsar; Reichhardt, Cynthia; Reichhardt, Charles; Ray, Dipanjan

    2015-07-14

    Disclosed is a method and apparatus for strongly enhancing vortex pinning by conformal crystal arrays. The conformal crystal array is constructed by a conformal transformation of a hexagonal lattice, producing a non-uniform structure with a gradient where the local six-fold coordination of the pinning sites is preserved, and with an arching effect. The conformal pinning arrays produce significantly enhanced vortex pinning over a much wider range of field than that found for other vortex pinning geometries with an equivalent number of vortex pinning sites, such as random, square, and triangular.

  11. Conformance Tool High Level Design Document: IEC 61850 Cyber Security Acceleration Project

    SciTech Connect (OSTI)

    Edgar, Thomas W.

    2013-05-01

    This document is the high level design document for the Pacific Northwest National Laboratory (PNNL) IEC 62351-3, 4 and 6 standards conformance test software toolkit.

  12. Atomic Layer Deposition for the Conformal Coating of Nanoporous Materials

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Elam, Jeffrey W.; Xiong, Guang; Han, Catherine Y.; Wang, H. Hau; Birrell, James P.; Welp, Ulrich; Hryn, John N.; Pellin, Michael J.; Baumann, Theodore F.; Poco, John F.; et al

    2006-01-01

    Amore » tomic layer deposition ( ALD ) is ideal for applying precise and conformal coatings over nanoporous materials. We have recently used ALD to coat two nanoporous solids: anodic aluminum oxide ( AAO ) and silica aerogels. AAO possesses hexagonally ordered pores with diameters d ∌ 40 nm and pore length L ∌ 70 microns. The AAO membranes were coated by ALD to fabricate catalytic membranes that demonstrate remarkable selectivity in the oxidative dehydrogenation of cyclohexane. Additional AAO membranes coated with ALD Pd films show promise as hydrogen sensors. Silica aerogels have the lowest density and highest surface area of any solid material. Consequently, these materials serve as an excellent substrate to fabricate novel catalytic materials and gas sensors by ALD .« less

  13. Large nucleotide-dependent conformational change in Rab28

    SciTech Connect (OSTI)

    Lee, Sung Haeng; Baek, Kyuwon; Dominguez, Roberto

    2008-12-01

    Rab GTPases are essential regulators of membrane trafficking. We report crystal structures of Rab28 in the active (GppNHp-bound) and inactive (GDP-3'P-bound) forms at 1.5 and 1.1 {angstrom} resolution. Rab28 is a distant member of the Rab family. While the overall fold of Rab28 resembles that of other Rab GTPases, it undergoes a larger nucleotide-dependent conformational change than other members of this family. Added flexibility resulting from a double-glycine motif at the beginning of switch 2 might partially account for this observation. The double-glycine motif, which is conserved in the Arf family, only occurs in Rab28 and Rab7B of the Rab family, and may have a profound effect on their catalytic activities.

  14. Thin-film optical initiator

    DOE Patents [OSTI]

    Erickson, Kenneth L.

    2001-01-01

    A thin-film optical initiator having an inert, transparent substrate, a reactive thin film, which can be either an explosive or a pyrotechnic, and a reflective thin film. The resultant thin-film optical initiator system also comprises a fiber-optic cable connected to a low-energy laser source, an output charge, and an initiator housing. The reactive thin film, which may contain very thin embedded layers or be a co-deposit of a light-absorbing material such as carbon, absorbs the incident laser light, is volumetrically heated, and explodes against the output charge, imparting about 5 to 20 times more energy than in the incident laser pulse.

  15. Apparatus and method for the production of gel beads containing a biocatalyst

    DOE Patents [OSTI]

    Scott, Charles D. (Oak Ridge, TN); Scott, Timothy C. (Knoxville, TN); Davison, Brian H. (Knoxville, TN)

    1998-01-01

    An apparatus and method for the large-scale and continuous production of gel beads containing a biocatalyst. The apparatus is a columnar system based on the chemical cross-linking of hydrocolloidal gels that contain and immobilize a biocatalyst, the biocatalyst being a microorganism or an enzyme. Hydrocolloidal gels, such as alginate, carrageenan, and a mixture of bone gelatin and modified alginate, provide immobilization matrices that can be used to entrap and retain the biocatalyst while allowing effective contact with substrates and release of products. Such immobilized biocatalysts are generally formulated into small spheres or beads that have high concentrations of the biocatalyst within the gel matrix. The columnar system includes a gel dispersion nozzle submerged in a heated non-interacting liquid, typically an organic liquid, that is immiscible with water to allow efficient formation of spherical gel droplets, the non-interacting liquid having a specific gravity that is less than water so that the gel droplets will fall through the liquid by the force of gravity. The heated non-interacting liquid is in direct contact with a chilled upflowing non-interacting liquid that will provide sufficient residence time for the gel droplets as they fall through the liquid so that they will be cooled below the gelling temperature and form solid spheres. The upflowing non-interacting liquid is in direct contact with an upflowing temperature-controlled aqueous solution containing the necessary chemicals for cross-linking or fixing of the gel beads to add the necessary stability. The flow rates of the two liquid streams can be varied to control the proper residence time in each liquid section to accommodate the production of gel beads of differing settling velocities. A valve is provided for continuous removal of the stabilized gel beads from the bottom of the column.

  16. Apparatus and method for the production of gel beads containing a biocatalyst

    DOE Patents [OSTI]

    Scott, C.D.; Scott, T.C.; Davison, B.H.

    1998-01-27

    An apparatus and method are disclosed for the large-scale and continuous production of gel beads containing a biocatalyst. The apparatus is a columnar system based on the chemical cross-linking of hydrocolloidal gels that contain and immobilize a biocatalyst, the biocatalyst being a microorganism or an enzyme. Hydrocolloidal gels, such as alginate, carrageenan, and a mixture of bone gelatin and modified alginate, provide immobilization matrices that can be used to entrap and retain the biocatalyst while allowing effective contact with substrates and release of products. Such immobilized biocatalysts are generally formulated into small spheres or beads that have high concentrations of the biocatalyst within the gel matrix. The columnar system includes a gel dispersion nozzle submerged in a heated non-interacting liquid, typically an organic liquid, that is immiscible with water to allow efficient formation of spherical gel droplets, the non-interacting liquid having a specific gravity that is less than water so that the gel droplets will fall through the liquid by the force of gravity. The heated non-interacting liquid is in direct contact with a chilled upflowing non-interacting liquid that will provide sufficient residence time for the gel droplets as they fall through the liquid so that they will be cooled below the gelling temperature and form solid spheres. The upflowing non-interacting liquid is in direct contact with an upflowing temperature-controlled aqueous solution containing the necessary chemicals for cross-linking or fixing of the gel beads to add the necessary stability. The flow rates of the two liquid streams can be varied to control the proper residence time in each liquid section to accommodate the production of gel beads of differing settling velocities. A valve is provided for continuous removal of the stabilized gel beads from the bottom of the column. 1 fig.

  17. Amino resin modified xanthan polymer gels for permeability profile control

    SciTech Connect (OSTI)

    Shu, P.

    1988-01-05

    A process for closing pores in a hydrocarbonaceous fluid bearing formation to obtain improved sweep efficiency during a water flood oil recovery operation wherein the process comprises injecting into the formation a gellable composition is described comprising: (a) water; (b) about 0.2 to about 5.0 wt. percent of a cross linkable polysaccharide biopolymer having at least one functional group selected from a member of the group consisting of an amine, an amide, a hydroxyl, or a thiol group; (c) about 0.02 to about 5.0 wt. percent of an aminoplast resin which reinforces the biopolymer; and (d) sufficient transitional metal ions to form a gel of a size and strength sufficient to close one or more permeable zones in the formation under substantially all pH conditions.

  18. California Solar Initiative- PV Incentives

    Broader source: Energy.gov [DOE]

    In January 2006, the California Public Utilities Commission (CPUC) adopted a program -- the California Solar Initiative (CSI) -- to provide more than $2.3 billion in incentives for photovoltaic (...

  19. Energy Efficient Schools Initiative- Loans

    Broader source: Energy.gov [DOE]

    The Energy Efficient Schools Initiative (EESI) was created in May 2008 to provide grants and loans to Tennessee school systems for capital outlay projects that meet energy efficient design and te...

  20. Georgia Power- Advanced Solar Initiative

    Broader source: Energy.gov [DOE]

    Note: According to Georgia Power's website, the Advanced Solar Initiative's final program guidelines are due to be published on June 25th and the bidding period for is expected to open on July 10,...

  1. Jet initiation of PBX 9502

    SciTech Connect (OSTI)

    McAfee, J.M.

    1987-07-01

    This report details the progress of an effort to determine the quantitative aspects of the initiation of PBX 9502 (95% TATB, 5% Kel-F 800) by copper jets. The particular jet used was that produced by the LAW warhead (66-mm diameter, 42/sup 0/ angle cone, copper-lined, conical shaped charge). Fifteen experiments, in various configurations, have been fired to define the essential parameters for quantitatively measuring the jet performance and initiation of bare PBX 9502. 7 refs., 8 figs.

  2. Initial Steps | Argonne National Laboratory

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

    Initial Steps Setting Research and Career Goals Each new postdoc should fill out a Postdoctoral Initial Discussion Form with his or her advisor. This is an opportunity to define career objectives, discuss how this postdoctoral appointment and its related research focus can contribute to those objectives, and identify opportunities for professional development while at Argonne. Postdocs should also consider transferrable skills needed to make successful career transitions and core competencies

  3. Services Initiatives | Department of Energy

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

    Services Initiatives Services Initiatives The Transportation Team Uses Alternative Fueled Vehicles in HQ Fleet 81% of HQ Fleet is alternative fueled (FY 2014). HQ utilizes biodiesel (B20) fueled shuttle buses, a domestic renewable fuel derived from natural oils like soybean oil. Recycled Paper for Copiers and Printers DOE Headquarters purchases a combination of 30% and 100% post-consumer recycled content paper for use in its staffed copy centers, walk-up copiers, and dedicated office printers

  4. The Green Building Initiative | Open Energy Information

    Open Energy Info (EERE)

    Green Building Initiative Jump to: navigation, search Name: The Green Building Initiative Place: Portland, Oregon Zip: 97201 Product: The Green Building Initiative works with...

  5. Mapping the conformational landscape of a dynamic enzyme by multitemperature and XFEL crystallography

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Keedy, Daniel A.; Kenner, Lillian R.; Warkentin, Matthew; Woldeyes, Rahel A.; Hopkins, Jesse B.; Thompson, Michael C.; Brewster, Aaron S.; Van Benschoten, Andrew H.; Baxter, Elizabeth L.; Uervirojnangkoorn, Monarin; et al

    2015-09-30

    Determining the interconverting conformations of dynamic proteins in atomic detail is a major challenge for structural biology. Conformational heterogeneity in the active site of the dynamic enzyme cyclophilin A (CypA) has been previously linked to its catalytic function, but the extent to which the different conformations of these residues are correlated is unclear. Here we compare the conformational ensembles of CypA by multitemperature synchrotron crystallography and fixed-target X-ray free-electron laser (XFEL) crystallography. The diffraction-before-destruction nature of XFEL experiments provides a radiation-damage-free view of the functionally important alternative conformations of CypA, confirming earlier synchrotron-based results. We monitored the temperature dependences ofmore » these alternative conformations with eight synchrotron datasets spanning 100-310 K. Multiconformer models show that many alternative conformations in CypA are populated only at 240 K and above, yet others remain populated or become populated at 180 K and below. These results point to a complex evolution of conformational heterogeneity between 180-–240 K that involves both thermal deactivation and solvent-driven arrest of protein motions in the crystal. The lack of a single shared conformational response to temperature within the dynamic active-site network provides evidence for a conformation shuffling model, in which exchange between rotamer states of a large aromatic ring in the middle of the network shifts the conformational ensemble for the other residues in the network. Together, our multitemperature analyses and XFEL data motivate a new generation of temperature- and time-resolved experiments to structurally characterize the dynamic underpinnings of protein function.« less

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

    Office of Scientific and Technical Information (OSTI)

    for protein separation and analysis | DOEpatents device having an immobilized pH gradient and page gels for protein separation and analysis Citation Details Title: Microfluidic device having an immobilized pH gradient and page gels for protein separation and analysis

  7. Optical fiber sensor having a sol-gel fiber core and a method of making

    DOE Patents [OSTI]

    Tao, Shiquan; Jindal, Rajeev; Winstead, Christopher; Singh, Jagdish P.

    2006-06-06

    A simple, economic wet chemical procedure is described for making sol-gel fibers. The sol-gel fibers made from this process are transparent to ultraviolet, visible and near infrared light. Light can be guided in these fibers by using an organic polymer as a fiber cladding. Alternatively, air can be used as a low refractive index medium. The sol-gel fibers have a micro pore structure which allows molecules to diffuse into the fiber core from the surrounding environment. Chemical and biochemical reagents can be doped into the fiber core. The sol-gel fiber can be used as a transducer for constructing an optical fiber sensor. The optical fiber sensor having an active sol-gel fiber core is more sensitive than conventional evanescent wave absorption based optical fiber sensors.

  8. User`s guide and documentation manual for ``PC-Gel`` simulator

    SciTech Connect (OSTI)

    Chang, Ming-Ming; Gao, Hong W.

    1993-10-01

    PC-GEL is a three-dimensional, three-phase (oil, water, and gas) permeability modification simulator developed by incorporating an in-situ gelation model into a black oil simulator (BOAST) for personal computer application. The features included in the simulator are: transport of each chemical species of the polymer/crosslinker system in porous media, gelation reaction kinetics of the polymer with crosslinking agents, rheology of the polymer and gel, inaccessible pore volume to macromolecules, adsorption of chemical species on rock surfaces, retention of gel on the rock matrix, and permeability reduction caused by the adsorption of polymer and gel. The in-situ gelation model and simulator were validated against data reported in the literature. The simulator PC-GEL is useful for simulating and optimizing any combination of primary production, waterflooding, polymer flooding, and permeability modification treatments. A general background of permeability modification using crosslinked polymer gels is given in Section I and the governing equations, mechanisms, and numerical solutions of PC-GEL are given in Section II. Steps for preparing an input data file with reservoir and gel-chemical transport data, and recurrent data are described in Sections III and IV, respectively. Example data inputs are enclosed after explanations of each input line to help the user prepare data files. Major items of the output files are reviewed in Section V. Finally, three sample problems for running PC-GEL are described in Section VI, and input files and part of the output files of these problems are listed in the appendices. For the user`s reference a copy of the source code of PC-GEL computer program is attached in Appendix A.

  9. Microsoft Word - ITSI award doc 06-D0008 conformed to P00001.doc |

    Office of Environmental Management (EM)

    Department of Energy ITSI award doc 06-D0008 conformed to P00001.doc Microsoft Word - ITSI award doc 06-D0008 conformed to P00001.doc More Documents & Publications Policy Flash 2015-02 Acquisition Letter No. AL 2015-01R - 06/01/2015 FOA 148 Amendment

  10. Research Initiative Will Demonstrate Low Temperature Geothermal...

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

    Research Initiative Will Demonstrate Low Temperature Geothermal Electrical Power Generation Systems Using Oilfield Fluids Research Initiative Will Demonstrate Low Temperature ...

  11. Military Initiative | Department of Energy

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

    Military Initiative Military Initiative 54% of the Tribes located in close proximity to military bases are located in the West, 18% in the Pacific Northwest, and 12% in New England and New York. Map from NREL 54% of the Tribes located in close proximity to military bases are located in the West, 18% in the Pacific Northwest, and 12% in New England and New York. Map from NREL The DOE Office of Indian Energy is working with the U.S. Department of Defense (DOD) to help it obtain 25% of its energy

  12. Anode initiated surface flashover switch

    DOE Patents [OSTI]

    Brainard, John P. (Albuquerque, NM); Koss, Robert J. (Albuquerque, NM)

    2003-04-29

    A high voltage surface flashover switch has a pair of electrodes spaced by an insulator. A high voltage is applied to an anode, which is smaller than the opposing, grounded, cathode. When a controllable source of electrons near the cathode is energized, the electrons are attracted to the anode where they reflect to the insulator and initiate anode to cathode breakdown.

  13. Managing Critical Management Improvement Initiatives

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2003-10-01

    Provides requirements and responsibilities for planning, executing and assessing critical management improvement initiatives within DOE. DOE N 251.59, dated 9/27/2004, extends this Notice until 10/01/2005. Archived 11-8-10. Does not cancel other directives.

  14. Fayette County Better Buildings Initiative

    SciTech Connect (OSTI)

    Capella, Arthur

    2015-03-04

    The Fayette County Better Buildings Initiative represented a comprehensive and collaborative approach to promoting and implementing energy efficiency improvements. The initiative was designed to focus on implementing energy efficiency improvements in residential units, while simultaneously supporting general marketing of the benefits of implementing energy efficiency measures. The ultimate goal of Fayette County’s Better Buildings Initiative was to implement a total of 1,067 residential energy efficiency retrofits with a minimum 15% estimated energy efficiency savings per unit. Program partners included: United States Department of Energy, Allegheny Power, and Private Industry Council of Westmoreland-Fayette, Fayette County Redevelopment Authority, and various local partners. The program was open to any Fayette County residents who own their home and meet the prequalifying conditions. The level of assistance offered depended upon household income and commitment to undergo a BPI – Certified Audit and implement energy efficiency measures, which aimed to result in at least a 15% reduction in energy usage. The initiative was designed to focus on implementing energy efficiency improvements in residential units, while simultaneously supporting general marketing of the benefits of implementing energy efficiency measures. Additionally, the program had components that involved recruitment and training for employment of persons in the energy sector (green jobs), as well as marketing and implementation of a commercial or community facilities component. The residential component of Fayette County’s Better Buildings Initiative involved a comprehensive approach, providing assistance to low- moderate- and market-rate homeowners. The initiative will also coordinate activities with local utility providers to further incentivize energy efficiency improvements among qualifying homeowners. The commercial component of Fayette County’s Better Building Initiative involved grants and loans to assist up to $15,000 projects per commercial structure with a mixture of a grant and financing at 0% for up to three – (3) years. The maximum award can be a $5,000 grant and a $10,000 loan. For projects less than $15,000, the award will have a ratio of 1/3 grant and 2/3 loan.

  15. Initiation disruptor systems and methods of initiation disruption

    DOE Patents [OSTI]

    Baum, Dennis W

    2014-09-23

    A system that may be used as an initiation disruption system (IDS) according to one embodiment includes an explosive charge; a plurality of particles in a layer at least partially surrounding the explosive charge; and a fire suppressant adjacent the plurality of particles. A method for disabling an object according to one embodiment includes placing the system as recited above near an object; and causing the explosive charge to initiate, thereby applying mechanical loading to the object such that the object becomes disabled. Additional systems and methods are also presented. A device according to another embodiment includes a plurality of particles bound by a binder thereby defining a sidewall having an interior for receiving an explosive; and a fire suppressant adjacent the plurality of particles and binder. Additional systems and methods are also presented.

  16. Conformable actively multiplexed high-density surface electrode array for brain interfacing

    DOE Patents [OSTI]

    Rogers, John; Kim, Dae-Hyeong; Litt, Brian; Viventi, Jonathan

    2015-01-13

    Provided are methods and devices for interfacing with brain tissue, specifically for monitoring and/or actuation of spatio-temporal electrical waveforms. The device is conformable having a high electrode density and high spatial and temporal resolution. A conformable substrate supports a conformable electronic circuit and a barrier layer. Electrodes are positioned to provide electrical contact with a brain tissue. A controller monitors or actuates the electrodes, thereby interfacing with the brain tissue. In an aspect, methods are provided to monitor or actuate spatio-temporal electrical waveform over large brain surface areas by any of the devices disclosed herein.

  17. AVAILABLE ONLINE AT: INITIATED BY:

    National Nuclear Security Administration (NNSA)

    INITIATED BY: http://nnsa.energy.gov/ NNSA Office of Nuclear Safety & Health NNSA/EM SUPPLEMENTAL DIRECTIVE Approved: 6-25-12 DIFFERING PROFESSIONAL OPINIONS (DPO) PROCESS NATIONAL NUCLEAR SECURITY ADMINISTRATION and OFFICE OF ENVIRONMENTAL MANAGEMENT SD G 442.2 NNSA/ EM SD G 442.2 1 6-25-12 DIFFERING PROFESSIONAL OPINIONS PROCESS (DPO) 1. PURPOSE. This guidance document describes the process used jointly by the National Nuclear Security Administration (NNSA) and Office of Environmental

  18. Workplace Charging Program and Initiatives

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

    Program and Initiatives Evan Kolkos New York Power Authority Clean Energy Technology © 2008 All Rights Reserved NYPA: Who We Are * Largest state public power organization in the United States * Uses no taxpayer funds in its operations * Provide wholesale power supplier throughout New York State and neighboring states as required by law * Provide, in the form of generation and market power purchases, about 25% of New York State's electricity * 2011 Generation: 28.1 million MWh, 78% hydro; 22%

  19. Guam Initial Technical Assessment Report

    SciTech Connect (OSTI)

    Baring-Gould, I.; Conrad, M.; Haase, S.; Hotchkiss, E.; McNutt, P.

    2011-04-01

    Under an interagency agreement, funded by the Department of Interior's (DOI) Office of Insular Affairs (OIA), the National Renewable Energy Laboratory (NREL) was tasked to deliver technical assistance to the island of Guam by conducting an island initial technical assessment that would lay out energy consumption and production data and establish a baseline. This assessment will be used to conduct future analysis and studies by NREL that will estimate energy efficiency and renewable energy potential for the island of Guam.

  20. Molecular receptors in metal oxide sol-gel materials prepared via molecular imprinting

    DOE Patents [OSTI]

    Sasaki, Darryl Y. (Albuquerque, NM); Brinker, C. Jeffrey (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Daitch, Charles E. (Charlottesville, VA); Shea, Kenneth J. (Irvine, CA); Rush, Daniel J. (Philadelphia, PA)

    2000-01-01

    A method is provided for molecularly imprinting the surface of a sol-gel material, by forming a solution comprised of a sol-gel material, a solvent, an imprinting molecule, and a functionalizing siloxane monomer of the form Si(OR).sub.3-n X.sub.n, wherein n is an integer between zero and three and X is a functional group capable of reacting with the imprinting molecule, evaporating the solvent, and removing the imprinting molecule to form the molecularly imprinted metal oxide sol-gel material. The use of metal oxide sol-gels allows the material porosity, pore size, density, surface area, hardness, electrostatic charge, polarity, optical density, and surface hydrophobicity to be tailored and be employed as sensors and in catalytic and separations operations.

  1. Suitability of Silica Gel to Process INEEL Sodium Bearing Waste - Letter Report

    SciTech Connect (OSTI)

    Kirkham, Robert John; Herbst, Alan Keith

    2000-09-01

    The suitability of using the silica gel process for Idaho National Engineering and Environmental Laboratory (INEEL) sodium bearing waste was investigated during fiscal year 2000. The study was co-funded by the Tanks Focus Area as part of TTP No. ID-77WT-31 and the High Level Waste Program. The task also included the investigation of possible other absorbents. Scoping tests and examination of past work showed that the silica gel absorption/adsorption and drying method was the most promising; thus only silica gel was studied and not other absorbents. The documentation on the Russian silica gel process provided much of the needed information but did not provide some of the processing detail so these facts had to be inferred or gleaned from the literature.

  2. A pH-responsive supramolecular polymer gel as an enteric elastomer...

    Office of Scientific and Technical Information (OSTI)

    Title: A pH-responsive supramolecular polymer gel as an enteric elastomer for use in gastric devices Authors: Zhang, Shiyi ; Bellinger, Andrew M. ; Glettig, Dean L. ; Barman, Ross ...

  3. Transparent ultralow-density silica aerogels prepared by a two-step sol-gel process

    SciTech Connect (OSTI)

    Tillotson, T.M.; Hrubesh, L.W.

    1991-09-01

    Conventional silica sol-gel chemistry is limited for the production of transparent ultralow-density aerogels because (1) gelation is either slow or unachievable, and (2) even when gelation is achieved, the large pore sizes result in loss of transparency for aerogels <.020 g/cc. We have developed a two-step sol-gel process that circumvents the limitations of the conventional process and allows the formation of ultralow-density gels in a matter of hours. we have found that the gel time is dependent on the catalyst concentration. After supercritical extraction, the aerogels are transparent, uncracked tiles with densities as low as .003 g/cc. 6 figs., 11 refs.

  4. Microchannel gel electrophoretic separation systems and methods for preparing and using

    DOE Patents [OSTI]

    Herr, Amy; Singh, Anup K; Throckmorton, Daniel J

    2013-09-03

    A micro-analytical platform for performing electrophoresis-based immunoassays was developed by integrating photopolymerized cross-linked polyacrylamide gels within a microfluidic device. The microfluidic immunoassays are performed by gel electrophoretic separation and quantifying analyte concentration based upon conventional polyacrylamide gel electrophoresis (PAGE). To retain biological activity of proteins and maintain intact immune complexes, native PAGE conditions were employed. Both direct (non-competitive) and competitive immunoassay formats are demonstrated in microchips for detecting toxins and biomarkers (cytokines, c-reactive protein) in bodily fluids (serum, saliva, oral fluids). Further, a description of gradient gels fabrication is included, in an effort to describe methods we have developed for further optimization of on-chip PAGE immunoassays. The described chip-based PAGE immunoassay method enables immunoassays that are fast (minutes) and require very small amounts of sample (less than a few microliters). Use of microfabricated chips as a platform enables integration, parallel assays, automation and development of portable devices.

  5. Microchannel gel electrophoretic separation systems and methods for preparing and using

    DOE Patents [OSTI]

    Herr, Amy E; Singh, Anup K; Throckmorton, Daniel J

    2015-02-24

    A micro-analytical platform for performing electrophoresis-based immunoassays was developed by integrating photopolymerized cross-linked polyacrylamide gels within a microfluidic device. The microfluidic immunoassays are performed by gel electrophoretic separation and quantifying analyte concentration based upon conventional polyacrylamide gel electrophoresis (PAGE). To retain biological activity of proteins and maintain intact immune complexes, native PAGE conditions were employed. Both direct (non-competitive) and competitive immunoassay formats are demonstrated in microchips for detecting toxins and biomarkers (cytokines, c-reactive protein) in bodily fluids (serum, saliva, oral fluids). Further, a description of gradient gels fabrication is included, in an effort to describe methods we have developed for further optimization of on-chip PAGE immunoassays. The described chip-based PAGE immunoassay method enables immunoassays that are fast (minutes) and require very small amounts of sample (less than a few microliters). Use of microfabricated chips as a platform enables integration, parallel assays, automation and development of portable devices.

  6. Non-Cross-Linked Gel Polymer Electrolytes for Lithium Ion Batteries -

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

    Energy Innovation Portal Energy Storage Energy Storage Electricity Transmission Electricity Transmission Find More Like This Return to Search Non-Cross-Linked Gel Polymer Electrolytes for Lithium Ion Batteries Lawrence Berkeley National Laboratory Contact LBL About This Technology Technology Marketing SummaryBerkeley Lab scientists have invented nanostructured gel polymer electrolytes for lithium ion batteries. The electrolytes have high ionic conductivity, high mechanical strength, and they

  7. A Solution Route to Thermoelectric Oxide Nanoparticles - A Sol-Gel Process

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

    Employing Heterometallic Alkoxides | Department of Energy A Solution Route to Thermoelectric Oxide Nanoparticles - A Sol-Gel Process Employing Heterometallic Alkoxides A Solution Route to Thermoelectric Oxide Nanoparticles - A Sol-Gel Process Employing Heterometallic Alkoxides Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR

  8. Microfluidic device having an immobilized pH gradient and PAGE gels for

    Office of Scientific and Technical Information (OSTI)

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

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

    Office of Scientific and Technical Information (OSTI)

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

  10. A pH-responsive supramolecular polymer gel as an enteric elastomer for use

    Office of Scientific and Technical Information (OSTI)

    in gastric devices (Journal Article) | SciTech Connect Journal Article: A pH-responsive supramolecular polymer gel as an enteric elastomer for use in gastric devices Citation Details In-Document Search Title: A pH-responsive supramolecular polymer gel as an enteric elastomer for use in gastric devices Authors: Zhang, Shiyi ; Bellinger, Andrew M. ; Glettig, Dean L. ; Barman, Ross ; Lee, Young-Ah Lucy ; Zhu, Jiahua ; Cleveland, Cody ; Montgomery, Veronica A. ; Gu, Li ; Nash, Landon D. ;

  11. Method for separating contaminants from solution employing an organic-stabilized metal-hydroxy gel

    DOE Patents [OSTI]

    Alexander, Donald H. (212 High Meadows, Richland, WA 99352)

    1996-01-01

    Metals and organics are extracted from solution by co-precipitating them with a gel comprising aluminum hydroxide and a complexing agent such as EDTA. After the gel is processed to remove the metals and organics, it can be recycled for further use by dissolving it in a high-pH solution, leaving no secondary waste stream. A number of alternative complexing agents perform better than EDTA.

  12. Postdoctoral Initial Discussion Form | Argonne National Laboratory

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

    Initial Discussion Form This form outlines initial goals and clarifies expectations between a postdoc and his/her supervisor for a successful and productive relationship. Microsoft Office document icon Postdoctoral Initial Discussion Form.doc

  13. Ultraviolet Absorption Spectrum of Malonaldehyde in Water Is Dominated by Solvent-Stabilized Conformations

    SciTech Connect (OSTI)

    Xu, Xuefei; Zheng, Jingjing; Truhlar, Donald G.

    2015-07-01

    Free energy calculations for eight enol isomers of malonaldehyde (MA) and simulation of the ultraviolet (UV) absorption spectrum in both the gas phase and water (pH = 3, where the molecule exists in neutral undeprotonated form) show that in water the two s-trans nonchelated enol conformers of MA become thermodynamically more stable than the internally hydrogen-bonded (“chelated enol”) conformer (CE). The pure CE conformer in water has a slightly red-shifted UV spectrum with respect to that in the gas phase, but the blue-shifted spectrum observed in water at pH 3 is dominated by solvent-stabilized conformations that have negligible populations in the gas phase. Density functional calculations with the solvation model based on density (SMD) and an ensemble-averaged vertical excitation model explain the experimental observations in detail.

  14. Twisted conformal symmetry in noncommutative two-dimensional quantum field theory

    SciTech Connect (OSTI)

    Lizzi, Fedele; Vitale, Patrizia; Vaidya, Sachindeo

    2006-06-15

    By twisting the commutation relations between creation and annihilation operators, we show that quantum conformal invariance can be implemented in the 2-d Moyal plane. This is an explicit realization of an infinite dimensional symmetry as a quantum algebra.

  15. SILICA GEL BEHAVIOR UNDER DIFFERENT EGS CHEMICAL AND THERMAL CONDITIONS: AN EXPERIMENTAL STUDY

    SciTech Connect (OSTI)

    Hunt, J D; Ezzedine, S M; Bourcier, W; Roberts, S

    2012-01-19

    Fractures and fracture networks are the principal pathways for migration of water and contaminants in groundwater systems, fluids in enhanced geothermal systems (EGS), oil and gas in petroleum reservoirs, carbon dioxide leakage from geological carbon sequestration, and radioactive and toxic industrial wastes from underground storage repositories. When dealing with EGS fracture networks, there are several major issues to consider, e.g., the minimization of hydraulic short circuits and losses of injected geothermal fluid to the surrounding formation, which in turn maximize heat extraction and economic production. Gel deployments to direct and control fluid flow have been extensively and successfully used in the oil industry for enhanced oil recovery. However, to the best of our knowledge, gels have not been applied to EGS to enhance heat extraction. In-situ gelling systems can either be organic or inorganic. Organic polymer gels are generally not thermostable to the typical temperatures of EGS systems. Inorganic gels, such as colloidal silica gels, however, may be ideal blocking agents for EGS systems if suitable gelation times can be achieved. In the current study, we explore colloidal silica gelation times and rheology as a function of SiO{sub 2} concentration, pH, salt concentration, and temperature, with preliminary results in the two-phase field above 100 C. Results at 25 C show that it may be possible to choose formulations that will gel in a reasonable and predictable amount of time at the temperatures of EGS systems.

  16. Carbon Sequestration Initiative CSI | Open Energy Information

    Open Energy Info (EERE)

    Sequestration Initiative CSI Jump to: navigation, search Name: Carbon Sequestration Initiative (CSI) Place: Cambridge, Massachusetts Zip: MA 02139-4307 Sector: Carbon Product:...

  17. Energy Innovation: Green Button Initiative Empowering Americans...

    Energy Savers [EERE]

    Energy Innovation: Green Button Initiative Empowering Americans to Save Energy and Money Energy Innovation: Green Button Initiative Empowering Americans to Save Energy and Money...

  18. Clean Coal Power Initiative | Department of Energy

    Office of Environmental Management (EM)

    Clean Coal Power Initiative Clean Coal Power Initiative "Clean coal technology" describes a new generation of energy processes that sharply reduce air emissions and other ...

  19. California Low Carbon Fuels Infrastructure Investment Initiative...

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

    Low Carbon Fuels Infrastructure Investment Initiative California Low Carbon Fuels Infrastructure Investment Initiative 2012 DOE Hydrogen and Fuel Cells Program and Vehicle...

  20. Energy Data Initiative | Open Energy Information

    Open Energy Info (EERE)

    Energy Data Initiative Jump to: navigation, search Energy Data Initiative Crystal Clear filesystem socket.png Energy Data Jam Crystal Clear filesystem socket.png Energy Datapalooza...

  1. Clean Energy Manufacturing Initiative Southeast Regional Summit...

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

    Clean Energy Manufacturing Initiative Southeast Regional Summit Clean Energy Manufacturing Initiative Southeast Regional Summit July 9, 2015 8:30AM to 6:00PM EDT Renaissance...

  2. Climate Policy Initiative | Open Energy Information

    Open Energy Info (EERE)

    Initiative Jump to: navigation, search Name: Climate Policy Initiative Address: 235 Montgomery Street, 13th Floor San Francisco, CA 94104 Place: San Francisco, California Website:...

  3. Florida Hydrogen Initiative Inc | Open Energy Information

    Open Energy Info (EERE)

    Hydrogen Initiative Inc Jump to: navigation, search Name: Florida Hydrogen Initiative Inc Place: Florida Sector: Hydro, Hydrogen Product: Provides grants to aid the development of...

  4. The Department of Energy Launches Cybersecurity Initiative |...

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

    WASHINGTON, DC - The Department of Energy is launching an initiative to enhance cybersecurity on the electric grid. The initiative, led by the Department's Office of Electricity ...

  5. The Initiation of Bacterial DNA Replication

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

    The Initiation of Bacterial DNA Replication Print For the first time, scientists have determined the structure of the initiator of bacterial DNA replication. It is already known...

  6. The Initiation of Bacterial DNA Replication

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

    The Initiation of Bacterial DNA Replication The Initiation of Bacterial DNA Replication Print Wednesday, 31 January 2007 00:00 For the first time, scientists have determined the...

  7. Energy Transition Initiative | Department of Energy

    Energy Savers [EERE]

    Energy Transition Initiative Energy Transition Initiative Blog: Progress Toward a Sustainable Future in the U.S. Virgin Islands Blog: Progress Toward a Sustainable Future in the...

  8. PRESENTATION: OVERVIEW OF THE SUNSHOT INITIATIVE

    Broader source: Energy.gov [DOE]

    A briefing to the Secretary's Energy Advisory Board on the SunShot Initiative delivered by Minh Le, Director of the SunShot Initiative. 

  9. Climate Technology Initiative (CTI) | Open Energy Information

    Open Energy Info (EERE)

    search Logo: Climate Technology Initiative Name: Climate Technology Initiative Place: Japan Year Founded: 1995 Website: www.climatetech.net Coordinates: 36.204824,...

  10. Three-point current correlation functions as probes of Effective Conformal

    Office of Scientific and Technical Information (OSTI)

    Theories (Journal Article) | SciTech Connect Journal Article: Three-point current correlation functions as probes of Effective Conformal Theories Citation Details In-Document Search Title: Three-point current correlation functions as probes of Effective Conformal Theories Authors: Betre, Kassahun ; /SLAC ; , Publication Date: 2013-11-11 OSTI Identifier: 1104714 Report Number(s): SLAC-PUB-15832 DOE Contract Number: AC02-76SF00515 Resource Type: Journal Article Resource Relation: Journal Name:

  11. Structures of P-glycoprotein reveal its conformational flexibility and an

    Office of Scientific and Technical Information (OSTI)

    epitope on the nucleotide-binding domain (Journal Article) | SciTech Connect SciTech Connect Search Results Journal Article: Structures of P-glycoprotein reveal its conformational flexibility and an epitope on the nucleotide-binding domain Citation Details In-Document Search Title: Structures of P-glycoprotein reveal its conformational flexibility and an epitope on the nucleotide-binding domain Authors: Ward, Andrew B. ; Szewczyk, Paul ; Grimard, Vinciane ; Lee, Chang-Wook ; Martinez, Lorena

  12. Structures of two distinct conformations of holo-non-ribosomal peptide

    Office of Scientific and Technical Information (OSTI)

    synthetases (Journal Article) | SciTech Connect Structures of two distinct conformations of holo-non-ribosomal peptide synthetases Citation Details In-Document Search Title: Structures of two distinct conformations of holo-non-ribosomal peptide synthetases Authors: Drake, Eric J. ; Miller, Bradley R. ; Shi, Ce ; Tarrasch, Jeffrey T. ; Sundlov, Jesse A. ; Allen, C. Leigh ; Skiniotis, Georgios ; Aldrich, Courtney C. ; Gulick, Andrew M. [1] ; UMM) [2] ; HWMRI) [2] + Show Author Affiliations

  13. Three-point current correlation functions as probes of Effective Conformal

    Office of Scientific and Technical Information (OSTI)

    Theories (Journal Article) | SciTech Connect SciTech Connect Search Results Journal Article: Three-point current correlation functions as probes of Effective Conformal Theories Citation Details In-Document Search Title: Three-point current correlation functions as probes of Effective Conformal Theories Authors: Betre, Kassahun ; /SLAC ; , Publication Date: 2013-11-11 OSTI Identifier: 1104714 Report Number(s): SLAC-PUB-15832 DOE Contract Number: AC02-76SF00515 Resource Type: Journal Article

  14. Initial Decision and Risk Analysis

    SciTech Connect (OSTI)

    Engel, David W.

    2012-02-29

    Decision and Risk Analysis capabilities will be developed for industry consideration and possible adoption within Year 1. These tools will provide a methodology for merging qualitative ranking of technology maturity and acknowledged risk contributors with quantitative metrics that drive investment decision processes. Methods and tools will be initially introduced as applications to the A650.1 case study, but modular spreadsheets and analysis routines will be offered to industry collaborators as soon as possible to stimulate user feedback and co-development opportunities.

  15. AVAILABLE ONLINE AT: INITIATED BY:

    National Nuclear Security Administration (NNSA)

    INITIATED BY: http://nnsa.energy.gov Office of Information Management and the Chief Information Officer NNSA Policy Letter Approved: 12-14-12 Baseline Cyber Security Program NATIONAL NUCLEAR SECURITY ADMINISTRATION Office of Information Management and the Chief Information Officer NAP-14.1-D THIS PAGE INTENTIONALLY LEFT BLANK NAP-14.1-D 1 12-14-12 BASELINE CYBER SECURITY PROGRAM 1. PURPOSE. The purpose of this Policy is to provide an integrated organization-wide Risk Management Approach (RMA),

  16. CX-007409: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Silica Polymer Initiator Conformance Gel Applications in Geothermal Zonal Isolation CX(s) Applied: A9, B3.6 Date: 12/21/2011 Location(s): Oklahoma Offices(s): Golden Field Office

  17. CX-010520: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Silica Polymer Initiator Conformance Gel Applications in Geothermal Zonal Isolation CX(s) Applied: A9, B3.6, B3.11 Date: 06/17/2013 Location(s): Oklahoma Offices(s): Golden Field Office

  18. Multidisciplinary University Research Initiative: High Operating

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

    Temperature Fluids | Department of Energy Concentrating Solar Power » Multidisciplinary University Research Initiative: High Operating Temperature Fluids Multidisciplinary University Research Initiative: High Operating Temperature Fluids Multidisciplinary University Research Initiative: High Operating Temperature Fluids In August 2012, DOE announced two awards under the Multidisciplinary University Research Initiative (MURI) to develop high-operating temperature heat-transfer fluids for

  19. Global Threat Reduction Initiative | Department of Energy

    Energy Savers [EERE]

    An overview of the Global Threat Reduction Initiative, U.S.-Origin Nuclear Fuel Removals.

  20. QER- Comment of Environmental Initiative

    Broader source: Energy.gov [DOE]

    Dear Office of Energy Policy and Systems Analysis, I lead a series of annual environmental policy forums that target the leaders within the Minnesota environmental and energy policy community (http://www.environmental-initiative.org/projects/policy-forum-series), and our next forum (on Sept. 24th) will be focused on the risks and rewards associated with fuel transport to/through Minnesota, as well as what policy decisions and trade-offs we are facing as a state. I am looking for a speaker to open the four-hour forum who can provide broader context on the issue of fuel transport infrastructure, as well as speak to federal vs. state jurisdiction and both the big-picture/long-term and the immediate on-the-ground trade-offs.

  1. Plug-in Hybrid Initiative

    SciTech Connect (OSTI)

    Goodman, Angie; Moore, Ray; Rowden, Tim

    2013-09-27

    Our main project objective was to implement Plug-in Electric Vehicles (PEV) and charging infrastructure into our electric distribution service territory and help reduce barriers in the process. Our research demonstrated the desire for some to be early adopters of electric vehicles and the effects lack of education plays on others. The response of early adopters was tremendous: with the initial launch of our program we had nearly 60 residential customers interested in taking part in our program. However, our program only allowed for 15 residential participants. Our program provided assistance towards purchasing a PEV and installation of Electric Vehicle Supply Equipment (EVSE). The residential participants have all come to love their PEVs and are more than enthusiastic about promoting the many benefits of driving electric.

  2. Minorities in Energy Initiative | Department of Energy

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

    Services » Minorities in Energy Initiative Minorities in Energy Initiative Minorities in Energy Initiative The Minorities in Energy Initiative addresses the needs of underrepresented communities in the energy sector and aligns with President Obama's agenda for engaging more Americans in energy and science, technology, engineering, and math fields. The Minorities in Energy Initiative, guided by the U.S. Department of Energy's Office of Economic Impact and Diversity, seeks to create a

  3. Minorities in Energy Initiative | Department of Energy

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

    Initiative Minorities in Energy Initiative Minorities in Energy Initiative The Minorities in Energy Initiative addresses the needs of underrepresented communities in the energy sector and aligns with President Obama's agenda for engaging more Americans in energy and science, technology, engineering, and math fields. The Minorities in Energy Initiative, guided by the U.S. Department of Energy's Office of Economic Impact and Diversity, seeks to create a substantive, sustainable model that connects

  4. Method for preparing hydrous titanium oxide spherules and other gel forms thereof

    DOE Patents [OSTI]

    Collins, J.L.

    1998-10-13

    The present invention are methods for preparing hydrous titanium oxide spherules, hydrous titanium oxide gels such as gel slabs, films, capillary and electrophoresis gels, titanium monohydrogen phosphate spherules, hydrous titanium oxide spherules having suspendible particles homogeneously embedded within to form a composite sorbent, titanium monohydrogen phosphate spherules having suspendible particles of at least one different sorbent homogeneously embedded within to form a composite sorbent having a desired crystallinity, titanium oxide spherules in the form of anatase, brookite or rutile, titanium oxide spherules having suspendible particles homogeneously embedded within to form a composite, hydrous titanium oxide fiber materials, titanium oxide fiber materials, hydrous titanium oxide fiber materials having suspendible particles homogeneously embedded within to form a composite, titanium oxide fiber materials having suspendible particles homogeneously embedded within to form a composite and spherules of barium titanate. These variations of hydrous titanium oxide spherules and gel forms prepared by the gel-sphere, internal gelation process offer more useful forms of inorganic ion exchangers, catalysts, getters and ceramics. 6 figs.

  5. Method for preparing hydrous titanium oxide spherules and other gel forms thereof

    DOE Patents [OSTI]

    Collins, Jack L. (Knoxville, TN)

    1998-01-01

    The present invention are methods for preparing hydrous titanium oxide spherules, hydrous titanium oxide gels such as gel slabs, films, capillary and electrophoresis gels, titanium monohydrogen phosphate spherules, hydrous titanium oxide spherules having suspendible particles homogeneously embedded within to form a composite sorbent, titanium monohydrogen phosphate spherules having suspendible particles of at least one different sorbent homogeneously embedded within to form a composite sorbent having a desired crystallinity, titanium oxide spherules in the form of anatase, brookite or rutile, titanium oxide spherules having suspendible particles homogeneously embedded within to form a composite, hydrous titanium oxide fiber materials, titanium oxide fiber materials, hydrous titanium oxide fiber materials having suspendible particles homogeneously embedded within to form a composite, titanium oxide fiber materials having suspendible particles homogeneously embedded within to form a composite and spherules of barium titanate. These variations of hydrous titanium oxide spherules and gel forms prepared by the gel-sphere, internal gelation process offer more useful forms of inorganic ion exchangers, catalysts, getters and ceramics.

  6. Solidification of Acidic, High Nitrate Nuclear Wastes by Grouting or Absorption on Silica Gel

    SciTech Connect (OSTI)

    A. K. Herbst; S. V. Raman; R. J. Kirkham

    2004-01-01

    The use of grout and silica gel were explored for the solidification of four types of acidic, high nitrate radioactive wastes. Two methods of grouting were tested: direct grouting and pre-neutralization. Two methods of absorption on silica gel were also tested: direct absorption and rotary spray drying. The waste simulant acidity varied between 1 N and 12 N. The waste simulant was neutralized by pre-blending calcium hydroxide with Portland cement and blast furnace slag powders prior to mixing with the simulant for grout solidification. Liquid sodium hydroxide was used to partially neutralize the simulant to a pH above 2 and then it was absorbed for silica gel solidification. Formulations for each of these methods are presented along with waste form characteristics and properties. Compositional variation maps for grout formulations are presented which help determine the optimum "recipe" for a particular waste stream. These maps provide a method to determine the proportions of waste, calcium hydroxide, Portland cement, and blast furnace slag that provide a waste form that meets the disposal acceptance criteria. The maps guide researchers in selecting areas to study and provide an operational envelop that produces acceptable waste forms. The grouts both solidify and stabilize the wastes, while absorption on silica gel produces a solid waste that will not pass standard leaching procedures (TCLP) if required. Silica gel wastes can be made to pass most leach tests if heated to 600șC.

  7. Toward Nanostructured Thermoelectrics. Synthesis and Characterization of Lead Telluride Gels and Aerogels

    SciTech Connect (OSTI)

    Ganguly, Shreyashi [Wayne State Univ., Detroit, MI (United States); Brock, Stephanie L. [Wayne State Univ., Detroit, MI (United States)

    2011-05-12

    The synthesis and characterization of lead telluride (PbTe) gels and aerogels with nanostructured features of potential benefit for enhanced thermoelectrics is reported. In this approach, discrete thiolate-capped PbTe nanoparticles were synthesized by a solution-based approach followed by oxidation-induced nanoparticle assembly with tetranitromethane or hydrogen peroxide to form wet gels. Drying of the wet gels by supercritical CO? extraction yielded aerogels, whereas xerogels were produced by ambient pressure bench top drying. The gels consist of an interconnected network of colloidal nanoparticles and pores with surface areas up to 74 mČ g-1. The thermal stability of the nanostructures relative to nanoparticles was probed with the help of in situ transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The aerogels were observed to sublime at a higher temperature and over a larger range (425–500 °C) relative to the precursor nanoparticles. TGA-DSC suggests that organic capping groups can be removed in the region 250–450 °C, and melting of PbTe nanoparticles occurs near the temperature for bulk materials (ca. 920 °C). The good thermal stability combined with the presence of nanoscale interfaces suggests PbTe gels may show promise in thermoelectric devices.

  8. Gel nanostructure in alkali-activated binders based on slag and fly ash, and effects of accelerated carbonation

    SciTech Connect (OSTI)

    Bernal, Susan A.; Provis, John L.; Walkley, Brant; San Nicolas, Rackel; Gehman, John D.; Brice, David G.; Kilcullen, Adam R.; Zeobond Pty Ltd, P.O. Box 23450, Docklands, Victoria 8012 ; Duxson, Peter; Deventer, Jannie S.J. van

    2013-11-15

    Binders formed through alkali-activation of slags and fly ashes, including ‘fly ash geopolymers’, provide appealing properties as binders for low-emissions concrete production. However, the changes in pH and pore solution chemistry induced during accelerated carbonation testing provide unrealistically low predictions of in-service carbonation resistance. The aluminosilicate gel remaining in an alkali-activated slag system after accelerated carbonation is highly polymerised, consistent with a decalcification mechanism, while fly ash-based binders mainly carbonate through precipitation of alkali salts (bicarbonates at elevated CO{sub 2} concentrations, or carbonates under natural exposure) from the pore solution, with little change in the binder gel identifiable by nuclear magnetic resonance spectroscopy. In activated fly ash/slag blends, two distinct gels (C–A–S–H and N–A–S–H) are formed; under accelerated carbonation, the N–A–S–H gel behaves comparably to fly ash-based systems, while the C–A–S–H gel is decalcified similarly to alkali-activated slag. This provides new scope for durability optimisation, and for developing appropriate testing methodologies. -- Highlights: •C-A-S-H gel in alkali-activated slag decalcifies during accelerated carbonation. •Alkali-activated fly ash gel changes much less under CO{sub 2} exposure. •Blended slag-fly ash binder contains two coexisting gel types. •These two gels respond differently to carbonation. •Understanding of carbonation mechanisms is essential in developing test methods.

  9. Evaluation of an ambient air sampling system for tritium (as tritiated water vapor) using silica gel adsorbent columns

    SciTech Connect (OSTI)

    Patton, G.W.; Cooper, A.T.; Tinker, M.R.

    1995-08-01

    Ambient air samples for tritium analysis (as the tritiated water vapor [HTO] content of atmospheric moisture) are collected for the Hanford Site Surface Environmental Surveillance Project (SESP) using the solid adsorbent silica gel. The silica gel has a moisture sensitive indicator which allows for visual observation of moisture movement through a column. Despite using an established method, some silica gel columns showed a complete change in the color indicator for summertime samples suggesting that breakthrough had occurred; thus a series of tests was conducted on the sampling system in an environmental chamber. The purpose of this study was to determine the maximum practical sampling volume and overall collection efficiency for water vapor collected on silica gel columns. Another purpose was to demonstrate the use of an impinger-based system to load water vapor onto silica gel columns to provide realistic analytical spikes and blanks for the Hanford Site SESP. Breakthrough volumes (V{sub b}) were measured and the chromatographic efficiency (expressed as the number of theoretical plates [N]) was calculated for a range of environmental conditions. Tests involved visual observations of the change in the silica gel`s color indicator as a moist air stream was drawn through the column, measurement of the amount of a tritium tracer retained and then recovered from the silica gel, and gravimetric analysis for silica gel columns exposed in the environmental chamber.

  10. Electrical initiation of an energetic nanolaminate film

    DOE Patents [OSTI]

    Tringe, Joseph W. (Walnut Creek, CA); Gash, Alexander E. (Brentwood, CA); Barbee, Jr., Troy W. (Palo Alto, CA)

    2010-03-30

    A heating apparatus comprising an energetic nanolaminate film that produces heat when initiated, a power source that provides an electric current, and a control that initiates the energetic nanolaminate film by directing the electric current to the energetic nanolaminate film and joule heating the energetic nanolaminate film to an initiation temperature. Also a method of heating comprising providing an energetic nanolaminate film that produces heat when initiated, and initiating the energetic nanolaminate film by directing an electric current to the energetic nanolaminate film and joule heating the energetic nanolaminate film to an initiation temperature.

  11. Gel-based Indo-1 probe for monitoring calcium(II) ions

    SciTech Connect (OSTI)

    Vo-Dinh, T.; Ramirez, L.; Pal, A. ); Viallet, P. )

    1994-03-15

    This work describes the development of a new gel-based Indo-1 (GBI) fluorescent probe for use in detection of Ca[sup 2+]. The carbodiimide-binding procedure, which allows the formation of an amide bond between the aromatic carboxylic group of Indo-1 and an amino group of the gel has been selected for this study. In this work, agarose gel, which has an amino terminal group with a six-atom hydrophilic spacer arm, has been chosen for hosting Indo-1. A phase-transfer catalyst was used to allow efficient diffusion of metal ions into the GBI probe. The results indicate that the GBI probe is an efficient and practical system that has the required sensitivity to detect Ca[sup 2+] ions in biological fluids for routine monitoring. 23 refs., 7 figs.

  12. Shock Initiation of Damaged Explosives

    SciTech Connect (OSTI)

    Chidester, S K; Vandersall, K S; Tarver, C M

    2009-10-22

    Explosive and propellant charges are subjected to various mechanical and thermal insults that can increase their sensitivity over the course of their lifetimes. To quantify this effect, shock initiation experiments were performed on mechanically and thermally damaged LX-04 (85% HMX, 15% Viton by weight) and PBX 9502 (95% TATB, 5% Kel-F by weight) to obtain in-situ manganin pressure gauge data and run distances to detonation at various shock pressures. We report the behavior of the HMX-based explosive LX-04 that was damaged mechanically by applying a compressive load of 600 psi for 20,000 cycles, thus creating many small narrow cracks, or by cutting wedge shaped parts that were then loosely reassembled, thus creating a few large cracks. The thermally damaged LX-04 charges were heated to 190 C for long enough for the beta to delta solid - solid phase transition to occur, and then cooled to ambient temperature. Mechanically damaged LX-04 exhibited only slightly increased shock sensitivity, while thermally damaged LX-04 was much more shock sensitive. Similarly, the insensitive explosive PBX 9502 was mechanically damaged using the same two techniques. Since PBX 9502 does not undergo a solid - solid phase transition but does undergo irreversible or 'rachet' growth when thermally cycled, thermal damage to PBX 9502 was induced by this procedure. As for LX-04, the thermally damaged PBX 9502 demonstrated a greater shock sensitivity than mechanically damaged PBX 9502. The Ignition and Growth reactive flow model calculated the increased sensitivities by igniting more damaged LX-04 and PBX 9502 near the shock front based on the measured densities (porosities) of the damaged charges.

  13. Solar Energy Initiatives Inc | Open Energy Information

    Open Energy Info (EERE)

    Initiatives Inc Jump to: navigation, search Name: Solar Energy Initiatives Inc Place: St. Johns, Florida Zip: 32082 Sector: Solar Product: US-based PV and solar thermal and PV...

  14. Novel Self-Thickening Chemicals for Improved Conformance Control

    SciTech Connect (OSTI)

    Patrick J. Shuler, Ph.D.

    2011-07-18

    The objective of this project is to identify single chemical agents that exhibit a desirable rheological property whereby if such a chemical is dissolved in salt water it increases the solution viscosity significantly with time. We term that behavior as 'self-thickening' and have nicknamed this as 'T85 technology'. As detailed in the original project proposal, such single chemical products can be applied to advantage as agents for selectively slowing or blocking high flow water channels in subsurface oil reservoirs. The net effect is a decrease in water and an increase in oil flow and production. The initial testing has focused on five different synthetic co-polymers that have two or more chemical groups. These chemicals were dissolved at a concentration of 2500 ppm into different salt solutions (sodium chloride, potassium chloride, and calcium chloride) that encompass a range of dissolved salt concentrations. For the sodium chloride and potassium chloride solutions the salt concentration ranged from 1-5 wt%. The calcium chloride dihydrate sample concentrations ranged from 0.1-1 wt%. One set of samples being aged at 25 C and a second set at 50 C. Viscosity measurements versus aging time show two of these agents may exhibit apparent self-thickening behavior under certain salinity and temperature conditions. Generally the effect is greater in lower salinity NaCl brines and at 25 C. Preliminary flow experiments confirm that the aged fluids exhibit increased effective viscosity while flowing through a porous medium (sand pack). These flow tests include the case of the chemical fluid being aged on the bench before injection into a sand pack, and also a second series of sand packs where fresh chemical fluid is injected and allowed to age in-situ. Thus, the results of the static ageing tests together with the flow tests are a technical validation of the T85 concept.

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

    Office of Scientific and Technical Information (OSTI)

    protein separation and analysis (Patent) | SciTech Connect device having an immobilized pH gradient and page gels for protein separation and analysis Citation Details In-Document Search Title: Microfluidic device having an immobilized pH gradient and page gels for protein separation and analysis × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a

  16. Sol-gel deposition of buffer layers on biaxially textured metal substances

    Office of Scientific and Technical Information (OSTI)

    (Patent) | SciTech Connect Sol-gel deposition of buffer layers on biaxially textured metal substances Citation Details In-Document Search Title: Sol-gel deposition of buffer layers on biaxially textured metal substances × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit OSTI to utilize additional information resources in energy

  17. Southface Energy Institute: Advanced Commercial Buildings Initiative...

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

    Southface Energy Institute: Advanced Commercial Buildings Initiative Southface Energy Institute: ... More Documents & Publications Georgia and Arkansas Residential Energy Code ...

  18. North American Synchrophasor Initiative (NASPI) Program Information...

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

    (NASPI) Program Information North American Synchrophasor Initiative (NASPI) Program Information Summary of the Transmission Reliability program's North American Synchrophasor...

  19. Innovative Manufacturing Initiative Recognition Day, Advanced...

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

    More Documents & Publications Innovative Manufacturing Initiative Recognition Day Advanced Manufacturing Office Overview Unlocking the Potential of Additive Manufacturing in the ...

  20. Innovative Manufacturing Initiatives Recognition Day Agenda

    Broader source: Energy.gov [DOE]

    Agenda for Innovative Manufacturing Initiatives Recognition Day held in Washington, D.C. on June 20, 2012

  1. Clean Energy Manufacturing Initiative | Department of Energy

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

    Energy Manufacturing Initiative Clean Energy Manufacturing Initiative Clean Energy Manufacturing Initiative Industrial Efficiency and Energy Productivity Video Clean Energy Manufacturing Initiative Industrial Efficiency and Energy Productivity Video Industrial efficiency and low-cost energy resources are key components to increasing U.S. energy productivity and makes the U.S. manufacturing sector more competitive. Companies find a competitive advantage in implementing efficiency technologies and

  2. National Laboratory Impact Initiative | Department of Energy

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

    National Laboratory Impact Initiative National Laboratory Impact Initiative In an effort to better utilize national laboratory resources, DOE's Office of Renewable Energy (EERE) launched the National Laboratory Impact (Lab Impact) Initiative in December 2013. The Initiative emphasizes the importance of commercializing lab work by bringing together leaders from government, academia, the national laboratories, and the private sector to increase understanding and communication for an effective

  3. Graduate Automotive Technology Education (GATE) Initiative Awards |

    Office of Environmental Management (EM)

    Department of Energy Graduate Automotive Technology Education (GATE) Initiative Awards Graduate Automotive Technology Education (GATE) Initiative Awards September 8, 2011 - 11:46am Addthis Graduate Automotive Technology Education (GATE) Initiative Awards DOE's Graduate Automotive Technology Education (GATE) initiative will award $6.4 million over the course of five years to support seven Centers of Excellence at American colleges, universities, and university-affiliated research

  4. N-terminal horseshoe conformation of DCC is functionally required for axon

    Office of Scientific and Technical Information (OSTI)

    guidance and might be shared by other neural receptors (Journal Article) | SciTech Connect N-terminal horseshoe conformation of DCC is functionally required for axon guidance and might be shared by other neural receptors Citation Details In-Document Search Title: N-terminal horseshoe conformation of DCC is functionally required for axon guidance and might be shared by other neural receptors Authors: Chen, Qiang ; Sun, Xiaqin ; Zhou, Xiao-hong ; Liu, Jin-huan ; Wu, Jane ; Zhang, Yan ; Wang,

  5. Microsoft Word - M-2 WTP Contract Section J - Conformed Thru 358.doc

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

    J Contract No. DE-AC27-01RV14136 Conformed Through Modification No. 358 J - i SECTION J LIST OF ATTACHMENTS WTP Contract Section J Contract No. DE-AC27-01RV14136 Conformed Through Modification No. 358 J - ii SECTION J LIST OF ATTACHMENTS TABLE OF CONTENTS Section Description Attachment A List of Acronyms Attachment B Reserved Attachment C Government-Furnished Property and Government-Furnished Equipment Attachment D Small Business Subcontracting Plan Attachment E List of Applicable Directives

  6. Southface Energy Institute: Advanced Commercial Buildings Initiative |

    Energy Savers [EERE]

    Department of Energy Southface Energy Institute: Advanced Commercial Buildings Initiative Southface Energy Institute: Advanced Commercial Buildings Initiative Southface Energy Institute: Advanced Commercial Buildings Initiative Lead Performer: Southface Energy Institute - Atlanta, GA Partners: - City of Atlanta - Atlanta, GA - Georgia Institute of Technology - Atlanta, GA - Kendeda Fund - Atlanta, GA - Oak Ridge National Laboratory - Oak Ridge, TN - Acuity Brands Lighting - Atlanta, GA -

  7. Clean Energy Manufacturing Initiative Midwest Regional Summit:

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

    Lightweighting Breakout Session Summary | Department of Energy Clean Energy Manufacturing Initiative Midwest Regional Summit: Lightweighting Breakout Session Summary Clean Energy Manufacturing Initiative Midwest Regional Summit: Lightweighting Breakout Session Summary Clean Energy Manufacturing Initiative Midwest Regional Summit: Lightweighting Breakout Session Summary June 21, 2013 PDF icon Lightweighting Breakout Session Summary More Documents & Publications Fiber Reinforced Polymer

  8. Clean Energy Infrastructure Educational Initiative

    SciTech Connect (OSTI)

    Hallinan, Kevin; Menart, James; Gilbert, Robert

    2012-08-31

    The Clean Energy Infrastructure Educational Initiative represents a collaborative effort by the University of Dayton, Wright State University and Sinclair Community College. This effort above all aimed to establish energy related programs at each of the universities while also providing outreach to the local, state-wide, and national communities. At the University of Dayton, the grant has aimed at: solidfying a newly created Masterñ€™s program in Renewable and Clean Energy; helping to establish and staff a regional sustainability organization for SW Ohio. As well, as the prime grantee, the University of Dayton was responsible for insuring curricular sharing between WSU and the University of Dayton. Finally, the grant, through its support of graduate students, and through cooperation with the largest utilities in SW Ohio enabled a region-wide evaluation of over 10,000 commercial building buildings in order to identify the priority buildings in the region for energy reduction. In each, the grant has achieved success. The main focus of Wright State was to continue the development of graduate education in renewable and clean energy. Wright State has done this in a number of ways. First and foremost this was done by continuing the development of the new Renewable and Clean Energy Masterñ€™s Degree program at Wright State . Development tasks included: continuing development of courses for the Renewable and Clean Energy Masterñ€™s Degree, increasing the student enrollment, and increasing renewable and clean energy research work. The grant has enabled development and/or improvement of 7 courses. Collectively, the University of Dayton and WSU offer perhaps the most comprehensive list of courses in the renewable and clean energy area in the country. Because of this development, enrollment at WSU has increased from 4 students to 23. Secondly, the grant has helped to support student research aimed in the renewable and clean energy program. The grant helped to solidify new research in the renewable and clean energy area. The educational outreach provided as a result of the grant included activities to introduce renewable and clean energy design projects into the Mechanical and Materials Engineering senior design class, the development of a geothermal energy demonstration unit, and the development of renewable energy learning modules for high school students. Finally, this grant supported curriculum development by Sinclair Community College for seven new courses and acquisition of necessary related instrumentation and laboratory equipment. These new courses, EGV 1201 Weatherization Training, EGV 1251 Introduction to Energy Management Principles, EGV 2301 Commercial and Industrial Assessment, EGV 2351 LEED Green Associate Exam Preparation, EGV 2251 Energy Control Strategies, EGV Solar Photovoltaic Design and Installation, and EGV Solar Thermal Systems, enable Sinclair to offer complete Energy Technology Certificate and an Energy Management Degree programs. To date, 151 students have completed or are currently registered in one of the seven courses developed through this grant. With the increasing interest in the Energy Management Degree program, Sinclair has begun the procedure to have the program approved by the Ohio Board of Regents.

  9. Sol-gel deposition of buffer layers on biaxially textured metal substances

    DOE Patents [OSTI]

    Shoup, Shara S. (Woodstock, GA); Paranthamam, Mariappan (Knoxville, TN); Beach, David B. (Knoxville, TN); Kroeger, Donald M. (Knoxville, TN); Goyal, Amit (Knoxville, TN)

    2000-01-01

    A method is disclosed for forming a biaxially textured buffer layer on a biaxially oriented metal substrate by using a sol-gel coating technique followed by pyrolyzing/annealing in a reducing atmosphere. This method is advantageous for providing substrates for depositing electronically active materials thereon.

  10. Designing Dual-functionalized Gels for Self-reconfiguration and Autonomous Motion

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kuksenok, Olga; Balazs, Anna C.

    2015-04-30

    Human motion is enabled by the concerted expansion and contraction of interconnected muscles that are powered by inherent biochemical reactions. One of the challenges in the field of biomimicry is eliciting this form of motion from purely synthetic materials, which typically do not generate internalized reactions to drive mechanical action. Moreover, for practical applications, this bio-inspired motion must be readily controllable. Herein, we develop a computational model to design a new class of polymer gels where structural reconfigurations and internalized reactions are intimately linked to produce autonomous motion, which can be directed with light. These gels contain both spirobenzopyran (SP)more » chromophores and the ruthenium catalysts that drive the oscillatory Belousov-Zhabotinsky (BZ) reaction. Importantly, both the SP moieties and the BZ reaction are photosensitive. When these dual-functionalized gels are exposed to non-uniform illumination, the localized contraction of the gel (due to the SP moieties) in the presence of traveling chemical waves (due to the BZ reaction) leads to new forms of spontaneous, self-sustained movement, which cannot be achieved by either of the mono-functionalized networks.« less

  11. A charge transfer complex nematic liquid crystalline gel with high electrical conductivity

    SciTech Connect (OSTI)

    Bhargavi, R.; Nair, Geetha G. E-mail: skpras@gmail.com; Krishna Prasad, S. E-mail: skpras@gmail.com; Majumdar, R.; Bag, Braja G.

    2014-10-21

    We describe the rheological, dielectric and elastic properties of a nematic liquid crystal gel created using an anthrylidene derivative of arjunolic acid, a chiral triterpenoid, obtained from the extracts of the wood of Terminalia arjuna. In this novel gel, having the electron-donor and acceptor components as minority constituents, the gelation and strengthening of charge-transfer complex (CTC) formation are seen to be occurring concomitantly. In addition to being mechanically strong with a large storage modulus, the gel with the maximized CTC exhibits Frank bend elastic constant values that approach nanonewton levels. The highlight of the study is the observation of 4–5 orders of magnitude increase in electrical conductivity for this gel, a value that is higher than even in the CT complexes of 2-d ordered columnar structures. A further important advantage of the present system over the columnar complex is that the high conductivity is seen for ac probing also, and owing to the nematic nature can be switched between its anisotropic limits. Some of these features are ascribed to a specific molecular packing architecture, which reduces the trapping of the charge carriers.

  12. Conformational selection in a protein-protein interaction revealed by dynamic pathway analysis

    SciTech Connect (OSTI)

    Chakrabarti, Kalyan S.; Agafonov, Roman V.; Pontiggia, Francesco; Otten, Renee; Higgins, Matthew K.; Schertler, Gebhard F. X.; Oprian, Daniel D.; Kern, Dorothee

    2015-12-24

    Molecular recognition plays a central role in biology, and protein dynamics has been acknowledged to be important in this process. However, it is highly debated whether conformational changes happen before ligand binding to produce a binding-competent state (conformational selection) or are caused in response to ligand binding (induced fit). Proposals for both mechanisms in protein/protein recognition have been primarily based on structural arguments. However, the distinction between them is a question of the probabilities of going via these two opposing pathways. Here we present a direct demonstration of exclusive conformational selection in protein/protein recognition by measuring the flux for rhodopsin kinase binding to its regulator recoverin, an important molecular recognition in the vision system. Using NMR spectroscopy, stopped-flow kinetics and isothermal titration calorimetry we show that recoverin populates a minor conformation in solution that exposes a hydrophobic binding pocket responsible for binding rhodopsin kinase. Lastly, protein dynamics in free recoverin limits the overall rate of binding.

  13. Conformational selection in a protein-protein interaction revealed by dynamic pathway analysis

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Chakrabarti, Kalyan S.; Agafonov, Roman V.; Pontiggia, Francesco; Otten, Renee; Higgins, Matthew K.; Schertler, Gebhard F. X.; Oprian, Daniel D.; Kern, Dorothee

    2015-12-24

    Molecular recognition plays a central role in biology, and protein dynamics has been acknowledged to be important in this process. However, it is highly debated whether conformational changes happen before ligand binding to produce a binding-competent state (conformational selection) or are caused in response to ligand binding (induced fit). Proposals for both mechanisms in protein/protein recognition have been primarily based on structural arguments. However, the distinction between them is a question of the probabilities of going via these two opposing pathways. Here we present a direct demonstration of exclusive conformational selection in protein/protein recognition by measuring the flux for rhodopsinmore » kinase binding to its regulator recoverin, an important molecular recognition in the vision system. Using NMR spectroscopy, stopped-flow kinetics and isothermal titration calorimetry we show that recoverin populates a minor conformation in solution that exposes a hydrophobic binding pocket responsible for binding rhodopsin kinase. Lastly, protein dynamics in free recoverin limits the overall rate of binding.« less

  14. The ultraviolet photodissociation of axial and equatorial conformers of 3-pyrroline

    SciTech Connect (OSTI)

    Oliver, Thomas A. A.; King, Graeme A.; Ashfold, Michael N. R.

    2010-11-21

    Resolved sets of photoproducts arising from the photodissociation of axial and equatorial conformers of 3-pyrroline have been observed using H(Rydberg) atom photofragment translational spectroscopy following excitation in the wavelength range of 250-213 nm. 3-pyrroline (alternatively 2,5-dihydropyrrole) is a five membered partially saturated heterocycle in which the bonding around the N atom is pyramidal (sp{sup 3} hybridized) and the N-H bond can lie either axial or equatorial to the ring. Careful analysis of total kinetic energy release data derived from H atom time-of-flight measurements reveals excitation of the 3-pyrrolinyl cofragment consistent with N-H bond fission in both the axial and equatorial conformers. This allows determination of the energy difference between the ground state conformers to be 340{+-}50 cm{sup -1} and the N-H bond strength for axial and equatorial conformers as 31 610{+-}50 and 31 270{+-}50 cm{sup -1}, respectively.

  15. Microscopic silicon-based lateral high-aspect-ratio structures for thin film conformality analysis

    SciTech Connect (OSTI)

    Gao, Feng; Arpiainen, Sanna; Puurunen, Riikka L.

    2015-01-15

    Film conformality is one of the major drivers for the interest in atomic layer deposition (ALD) processes. This work presents new silicon-based microscopic lateral high-aspect-ratio (LHAR) test structures for the analysis of the conformality of thin films deposited by ALD and by other chemical vapor deposition means. The microscopic LHAR structures consist of a lateral cavity inside silicon with a roof supported by pillars. The cavity length (e.g., 20–5000??m) and cavity height (e.g., 200–1000?nm) can be varied, giving aspect ratios of, e.g., 20:1 to 25?000:1. Film conformality can be analyzed with the microscopic LHAR by several means, as demonstrated for the ALD Al{sub 2}O{sub 3} and TiO{sub 2} processes from Me{sub 3}Al/H{sub 2}O and TiCl{sub 4}/H{sub 2}O. The microscopic LHAR test structures introduced in this work expose a new parameter space for thin film conformality investigations expected to prove useful in the development, tuning and modeling of ALD and other chemical vapor deposition processes.

  16. Investigations of the small-scale thermal behavior of sol-gel thermites.

    SciTech Connect (OSTI)

    Warren, Mial E.; Farrow, Matthew; Tappan, Alexander Smith

    2009-02-01

    Sol-gel thermites, formulated from nanoporous oxides and dispersed fuel particles, may provide materials useful for small-scale, intense thermal sources, but understanding the factors affecting performance is critical prior to use. Work was conducted on understanding the synthesis conditions, thermal treatments, and additives that lead to different performance characteristics in iron oxide sol-gel thermites. Additionally, the safety properties of sol-gel thermites were investigated, especially those related to air sensitivity. Sol-gel thermites were synthesized using a variety of different techniques and there appear to be many viable routes to relatively equivalent thermites. These thermites were subjected to several different thermal treatments under argon in a differential scanning calorimeter, and it was shown that a 65 C hold for up to 200 minutes was effective for the removal of residual solvent, thus preventing boiling during the final thermal activation step. Vacuum-drying prior to this heating was shown to be even more effective at removing residual solvent. The addition of aluminum and molybdenum trioxide (MoO{sub 3}) reduced the total heat release per unit mass upon exposure to air, probably due to a decrease in the amount of reduced iron oxide species in the thermite. For the thermal activation step of heat treatment, three different temperatures were investigated. Thermal activation at 200 C resulted in increased ignition sensitivity over thermal activation at 232 C, and thermal activation at 300 C resulted in non-ignitable material. Non-sol-gel iron oxide did not exhibit any of the air-sensitivity observed in sol-gel iron oxide. In the DSC experiments, no bulk ignition of sol-gel thermites was observed upon exposure to air after thermal activation in argon; however ignition did occur when the material was heated in air after thermal treatment. In larger-scale experiments, up to a few hundred milligrams, no ignition was observed upon exposure to air after thermal activation in vacuum; however ignition by resistively-heated tungsten wire was possible. Thin films of thermite were fabricated using a dispersed mixture of aluminum and iron oxide particles, but ignition and propagation of these films was difficult. The only ignition and propagation observed was in a preheated sample.

  17. On the initial state and consistency relations

    SciTech Connect (OSTI)

    Berezhiani, Lasha; Khoury, Justin E-mail: jkhoury@sas.upenn.edu

    2014-09-01

    We study the effect of the initial state on the consistency conditions for adiabatic perturbations. In order to be consistent with the constraints of General Relativity, the initial state must be diffeomorphism invariant. As a result, we show that initial wavefunctional/density matrix has to satisfy a Slavnov-Taylor identity similar to that of the action. We then investigate the precise ways in which modified initial states can lead to violations of the consistency relations. We find two independent sources of violations: i) the state can include initial non-Gaussianities; ii) even if the initial state is Gaussian, such as a Bogoliubov state, the modified 2-point function can modify the q-vector ? 0 analyticity properties of the vertex functional and result in violations of the consistency relations.

  18. Structured Innovation Initiative Workshop | Department of Energy

    Energy Savers [EERE]

    Structured Innovation Initiative Workshop Structured Innovation Initiative Workshop April 28, 2016 8:00AM to 5:00PM EDT Following Water Power Week in Washington, D.C, the U.S. Department of Energy (DOE) will conduct a workshop on the Structured Innovation Initiative, similar to the workshop recently held in Edinburgh, Scotland during ICOE 2016. The goal of the workshop is for the wider wave energy community to provide input into the important specification of wave energy converter system

  19. Advanced Manufacturing Initiative Improves Turbine Blade Productivity |

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

    Department of Energy Manufacturing Initiative Improves Turbine Blade Productivity Advanced Manufacturing Initiative Improves Turbine Blade Productivity May 20, 2011 - 2:56pm Addthis This is an excerpt from the Second Quarter 2011 edition of the Wind Program R&D Newsletter. The Advanced Manufacturing Initiative (AMI) at DOE's Sandia National Laboratories is working with industry to improve manufacturing processes and create U.S. jobs by improving labor productivity in wind turbine blade

  20. DOE Exascale Initiative | Department of Energy

    Office of Environmental Management (EM)

    Exascale Initiative DOE Exascale Initiative A briefing to the Secretary's Energy Advisory Board on exascale computing prepared by: Dimitri Kusnezov, Senior Advisor to the Secretary, US DOE Steve Binkley, Senior Advisor, Office of Science, US DOE Bill Harrod, Office of Science/ASCR Bob Meisner, Defense Programs/ASC PDF icon DOE Exascale Initiative (pdf) More Documents & Publications Report of the Task Force on Next Generation High Performance Computing Class Patent Waiver W(C)2012-003 Volume

  1. Strategic Initiatives Work Group | Department of Energy

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

    Strategic Initiatives Work Group Strategic Initiatives Work Group The Work Group, comprised of members representing DOE, contractor and worker representatives, provides a forum for information sharing; data collection and analysis; as well as, identifying best practices and initiatives to enhance safety performance and safety culture across the Complex. Due to the broad nature of the issues reflected within this working group, the chartered objectives and outcomes have been moved forward to be

  2. Energy Transition Initiative | Department of Energy

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

    Energy Transition Initiative Energy Transition Initiative Blog: Progress Toward a Sustainable Future in the U.S. Virgin Islands Blog: Progress Toward a Sustainable Future in the U.S. Virgin Islands Read more Islands Playbook Islands Playbook Read more Island Energy Snapshots Island Energy Snapshots Read more State and Local Energy Data Tool State and Local Energy Data Tool Read more Through the Energy Transition Initiative (ETI), the U.S. Department of Energy and its partners work with

  3. Applied Field Research Initiative Attenuation Based Remedies

    Office of Environmental Management (EM)

    Laboratory (SRNL), the initiative is a collaborative effort that leverages DOE invest- ments in applied research and basic science and the work of the site contractors to...

  4. Climate Technology Initiative Training Courses | Open Energy...

    Open Energy Info (EERE)

    Training Courses Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Climate Technology Initiative Training Courses AgencyCompany Organization: Climate Technology...

  5. Rotary mode system initial instrument calibration

    SciTech Connect (OSTI)

    Johns, B.R.

    1994-10-01

    The attached report contains the vendor calibration procedures used for the initial instrument calibration of the rotary core sampling equipment. The procedures are from approved vendor information files.

  6. Clean Energy Manufacturing Initiative Industrial Efficiency and...

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

    Industrial Efficiency and Energy Productivity Video Clean Energy Manufacturing Initiative Industrial Efficiency and Energy Productivity Video Addthis An error occurred. Try...

  7. Ultrafast laser diagnostics to investigate initiation fundamentals...

    Office of Scientific and Technical Information (OSTI)

    pressure and chemical change during the shock initiation of energetic materials. ... We have also demonstrated laser shock and particle velocity measurements in thin film ...

  8. International Energy Initiative | Open Energy Information

    Open Energy Info (EERE)

    to as INTAAACT, which means integrating information, training, analysis, advocacy, and action into projects. The Asian Regional Energy Initiative under a regional Director, was...

  9. Microsoft Word - Energy Department Initiates Recertification...

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

    waste. EPA first certified WIPP compliant in 1998. The initial Compliance Certification Application demonstrated how the geological, hydrological, physical, chemical and...

  10. The Initiation of Bacterial DNA Replication

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

    The Initiation of Bacterial DNA Replication The Initiation of Bacterial DNA Replication Print Wednesday, 31 January 2007 00:00 For the first time, scientists have determined the structure of the initiator of bacterial DNA replication. It is already known that such replication is controlled by a protein known as DnaA, a member of the AAA+ superfamily of ATPases. What has now been discovered is that the core of the initiator is not the closed-ring structure expected for this system. Instead, DnaA

  11. APPENDIX G - DATA MANAGEMENT INITIATIVES G-1

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

    G - DATA MANAGEMENT INITIATIVES G-1 September 20, 1993 LOCATIONAL DATA COLLECTION STANDARDS Purpose: Establish standards to be followed by all organizations collecting locational...

  12. Interconnection-Wide Transmission Planning Initiative: Topic...

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

    Resource Planning and Priorities Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Eastern Interconnection on Electric Resource...

  13. Interconnection-Wide Transmission Planning Initiative: Topic...

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

    in the Texas Interconnection Interconnection-Wide Transmission Planning Initiative: Topic B, State Agency Input Regarding Electric Resource and Transmission Planning in the...

  14. Interconnection-Wide Transmission Planning Initiative: Topic...

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

    Resource Planning and Priorities Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Western Interconnection on Electric Resource...

  15. Interconnection-Wide Transmission Planning Initiative: Topic...

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

    Analysis and Planning Interconnection-Wide Transmission Planning Initiative: Topic A, Interconnection-Level Analysis and Planning A description of the requirements for...

  16. The Initiation of Bacterial DNA Replication

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

    initiator architecture and function. Research conducted by J.P. Erzberger and M.L. Mott (University of California, Berkeley) and J.M. Berger (University of California,...

  17. Startup America Initiative | Open Energy Information

    Open Energy Info (EERE)

    America Place: Washington, D.C. Year Founded: 2011 Website: www.whitehouse.govissuesstar References: Startup America1 The Startup America Initiative and Startup America...

  18. International Council for Local Environmental Initiatives | Open...

    Open Energy Info (EERE)

    Initiatives, headquartered in Toronto, Ontario, is an international association of local governments, along with national and regional governments, focused on sustainable...

  19. The Vote Solar Initiative | Open Energy Information

    Open Energy Info (EERE)

    The Vote Solar Initiative is a non-profit organization with the mission of stopping global warming and increasing energy independence by bringing solar energy into the...

  20. Hydrogen Fuel Initiative | Open Energy Information

    Open Energy Info (EERE)

    Hydrogen Fuel Initiative Jump to: navigation, search Contents 1 Introduction 2 Cost 3 Hydrogen Production Strategy 4 Objectives 5 Manufacturing Challenges 6 References Introduction...

  1. C-3E? WOMENS INITIATIVE:

    Energy Savers [EERE]

    the world by women leading in the fields of science, technology, engineering, and mathematics. The objective of the initiative is to encourage women to enter the clean energy...

  2. EERE Program Management Initiative (PMI) Brochure

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

    ... EERE has made substantial investments in two separate information system development initiatives that complement each other and come together to form a virtual comprehensive ...

  3. Clean Energy Manufacturing Initiative: Increasing American Competitive...

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

    The SunShot Initiative's efforts to improve manufacturing of solar energy systems; The Wind Program's work on taller wind energy towers; and The Vehicle Technologies Office's ...

  4. Sustainable Transportation and National Parks Initiative Featured...

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

    This initiative supports the National Park Service's Green Parks Plan with transportation projects that deploy alternative fuels, electric-drive vehicles, and fuel-saving measures. ...

  5. Voluntary Initiative: Partnering to Enhance Program Capacity

    Broader source: Energy.gov [DOE]

    Better Buildings Residential Network Program Sustainability Peer Exchange Call Series: Voluntary Initiative: Partnering to Enhance Program Capacity, Call Slides and Summary, May 8, 2014.

  6. Lab seeks venture acceleration initiative partners

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

    partners The Venture Acceleration Initiative is a pilot program to strategically spin off from the Lab start-up companies with emphasis on establishing new businesses in...

  7. Clean Energy Manufacturing Initiative: Technology Research and...

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

    Clean Energy Manufacturing Initiative: Technology Research and Development Clean Energy ... The Office of Nuclear Energy's Advanced Methods for Manufacturing subprogram accelerates ...

  8. commercial buildings initiative | netl.doe.gov

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

    Commercial Buildings Initiative The DOE Building Technologies Office works with the commercial building industry to accelerate the use of energy efficiency technologies in both...

  9. Strategic Initiatives Work Group | Department of Energy

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

    for information sharing; data collection and analysis; as well as, identifying best practices and initiatives to enhance safety performance and safety culture across the Complex. ...

  10. DOE Initiates Enforcement Proceedings against Westinghouse and...

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

    Proceedings against Westinghouse and Mitsubishi for Failure to Certify (Notice of Proposed Civil Penalty Issued) DOE Initiates Enforcement Proceedings against Westinghouse and...

  11. European Green Cars Initiative | Open Energy Information

    Open Energy Info (EERE)

    Commission Focus Area: Governance - Planning - Decision-Making Structure Topics: Best Practices Website: www.green-cars-initiative.eupublic The European Green Cars...

  12. Innovative Manufacturing Initiative Recognition Day - Final Participant

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

    Listing | Department of Energy Day - Final Participant Listing Innovative Manufacturing Initiative Recognition Day - Final Participant Listing PDF icon imi_recogitionday_participants.pdf More Documents & Publications Innovative Manufacturing Initiative Recognition Day 2015 AMO Peer Review Agenda CX-100154 Categorical Exclusion Determination

  13. Innovative Manufacturing Initiative Recognition Day, Advanced Manufacturing

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

    Office (AMO) | Department of Energy Day, Advanced Manufacturing Office (AMO) Innovative Manufacturing Initiative Recognition Day, Advanced Manufacturing Office (AMO) PDF icon imi_recogitionday_leo_june2012.pdf More Documents & Publications Innovative Manufacturing Initiative Recognition Day Advanced Manufacturing Office Overview Unlocking the Potential of Additive Manufacturing in the Fuel Cells Industry

  14. Clean Energy and Bond Finance Initiative

    Broader source: Energy.gov [DOE]

    Provides information on Clean Energy and Bond Finance Initiative (CE+BFI). CE+BFI brings together public infrastructure finance agencies, clean energy public fund managers and institutional investors across the country to explore how to raise capital at scale for clean energy development through bond financing. Author: Clean Energy and Bond Finance Initiative

  15. Application of the Principle of Maximum Conformality to Top-Pair Production

    SciTech Connect (OSTI)

    Brodsky, Stanley J.; Wu, Xing-Gang; /SLAC /Chongqing U.

    2013-05-13

    A major contribution to the uncertainty of finite-order perturbative QCD predictions is the perceived ambiguity in setting the renormalization scale {mu}{sub r}. For example, by using the conventional way of setting {mu}{sub r} {element_of} [m{sub t}/2, 2m{sub t}], one obtains the total t{bar t} production cross-section {sigma}{sub t{bar t}} with the uncertainty {Delta}{sigma}{sub t{bar t}}/{sigma}{sub t{bar t}} {approx} (+3%/-4%) at the Tevatron and LHC even for the present NNLO level. The Principle of Maximum Conformality (PMC) eliminates the renormalization scale ambiguity in precision tests of Abelian QED and non-Abelian QCD theories. By using the PMC, all nonconformal {l_brace}{beta}{sub i}{r_brace}-terms in the perturbative expansion series are summed into the running coupling constant, and the resulting scale-fixed predictions are independent of the renormalization scheme. The correct scale-displacement between the arguments of different renormalization schemes is automatically set, and the number of active flavors n{sub f} in the {l_brace}{beta}{sub i}{r_brace}-function is correctly determined. The PMC is consistent with the renormalization group property that a physical result is independent of the renormalization scheme and the choice of the initial renormalization scale {mu}{sub r}{sup init}. The PMC scale {mu}{sub r}{sup PMC} is unambiguous at finite order. Any residual dependence on {mu}{sub r}{sup init} for a finite-order calculation will be highly suppressed since the unknown higher-order {l_brace}{beta}{sub i}{r_brace}-terms will be absorbed into the PMC scales higher-order perturbative terms. We find that such renormalization group invariance can be satisfied to high accuracy for {sigma}{sub t{bar t}} at the NNLO level. In this paper we apply PMC scale-setting to predict the t{bar t} cross-section {sigma}{sub t{bar t}} at the Tevatron and LHC colliders. It is found that {sigma}{sub t{bar t}} remains almost unchanged by varying {mu}{sub r}{sup init} within the region of [m{sub t}/4, 4m{sub t}]. The convergence of the expansion series is greatly improved. For the (q{bar q})-channel, which is dominant at the Tevatron, its NLO PMC scale is much smaller than the top-quark mass in the small x-region, and thus its NLO cross-section is increased by about a factor of two. In the case of the (gg)-channel, which is dominant at the LHC, its NLO PMC scale slightly increases with the subprocess collision energy {radical}s, but it is still smaller than m{sub t} for {radical} {approx}< 1 TeV, and the resulting NLO cross-section is increased by {approx}20%. As a result, a larger {sigma}{sub t{bar t}} is obtained in comparison to the conventional scale-setting method, which agrees well with the present Tevatron and LHC data. More explicitly, by setting m{sub t} = 172.9 {+-} 1.1 GeV, we predict {sigma}{sub Tevatron, 1.96 TeV} = 7.626{sub -0.257}{sup +0.265} pb, {sigma}{sub LHC, 7 TeV} = 171.8{sub -5.6}{sup +5.8} pb and {sigma}{sub LHC, 14 TeV} = 941.3{sub -26.5}{sup +28.4} pb.

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

    DOE Patents [OSTI]

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

    2012-12-11

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

  17. SU-E-T-130: Dosimetric Evaluation of Tissue Equivalent Gel Dosimeter Using Saccharide in Radiotherapy System

    SciTech Connect (OSTI)

    Cho, Y; Lee, D; Jung, H; Ji, Y; Kim, K; Chang, U; Kwon, S

    2014-06-01

    Purpose: In this study, the dose responses of the MAGIC gel with various concentrations and type of saccharide are examined to clarify the roles of mono and disaccharide in the polymerization process. Then we focused on the tissue equivalence and dose sensitivity of MAGIC gel dosimeters. Methods: The gel is composed of HPLC, 8% gelatin, 2 Ś 10-3 M L-ascorbic acid, 1.8 Ś 10-2 M hydroquinone, 8 Ś 10-5 M copper(II)sulfate and 9% methacrylic acid, new polymer gels are synthesized by adding glucose(monosaccharide), sucrose(disaccharide) and urea in the concentration range of 5?35%. For irradiation of the gel, cesium-137 gamma-ray irradiator was used, radiation dose was delivered from 5?50 Gy. MRI images of the gel were acquired by using a 3.0 T MRI system. Results: When saccharide and urea were added, the O/C, O/N and C/N ratios agreed with those of soft tissue with 1.7%. The dose-response of glucose and sucrose gel have slope-to-intercept ratio of 0.044 and 0.283 respectively. The slope-to-ratio is one important determinant of gel sensitivity. R-square values of glucose and sucrose gel dosimeters were 0.984 and 0.994 respectively. Moreover when urea were added, the slope-to-intercept ratio is 0.044 and 0.073 respectively. R-square values of mono and disaccharide gel were 0.973 and 0.989 respectively. When a saccharide is added into the MAGIC gel dosimeter, dose sensitivity is increased. However when urea were added, dose sensitivity is slightly decreased. Conclusion: In this study, it was possible to obtain the following conclusions by looking at the dose response characteristics after adding mono-, di-saccharide and urea to a MAGIC gel dosimeter. Saccharide was a tendency of increasing dose sensitivity with disaccharide. Sa.ccharide is cost effective, safe, soft tissue equivalent, and can be used under various experimental conditions, making it a suitable dosimeter for some radiotherapy applications.

  18. Moisture sensor based on evanescent wave light scattering by porous sol-gel silica coating

    DOE Patents [OSTI]

    Tao, Shiquan; Singh, Jagdish P.; Winstead, Christopher B.

    2006-05-02

    An optical fiber moisture sensor that can be used to sense moisture present in gas phase in a wide range of concentrations is provided, as well techniques for making the same. The present invention includes a method that utilizes the light scattering phenomenon which occurs in a porous sol-gel silica by coating an optical fiber core with such silica. Thus, a porous sol-gel silica polymer coated on an optical fiber core forms the transducer of an optical fiber moisture sensor according to an embodiment. The resulting optical fiber sensor of the present invention can be used in various applications, including to sense moisture content in indoor/outdoor air, soil, concrete, and low/high temperature gas streams.

  19. Composition for selective placement of polymer gels for profile control in thermal oil recovery

    SciTech Connect (OSTI)

    Shu, P.; Shu, W.R.

    1990-08-21

    This patent describes a cross-linked gel product obtained by activating components at a temperature greater than about 300{degrees}F. It comprises: water; a cross-linkable polymer selected from a member of the group consisting of polyvinyl alcohol, polyvinyl alcohol copolymers, and sulfonated polyvinyl alcohol which member has at least one functional group selected from a member of the group consisting of an amine, a hydroxyl, or a thiol group; a phenolic compound; and a water-dispersible aldehyde producing compound when heated to a temperature above about 300{degrees}F. in a formation yields sufficient formaldehyde to react with the phenolic compound thereby forming a phenolic resin which combines with the polymer and makes a solid cross-linked gel.

  20. Dark matter as a ghost free conformal extension of Einstein theory

    SciTech Connect (OSTI)

    Barvinsky, A.O.

    2014-01-01

    We discuss ghost free models of the recently suggested mimetic dark matter theory. This theory is shown to be a conformal extension of Einstein general relativity. Dark matter originates from gauging out its local Weyl invariance as an extra degree of freedom which describes a potential flow of the pressureless perfect fluid. For a positive energy density of this fluid the theory is free of ghost instabilities, which gives strong preference to stable configurations with a positive scalar curvature and trace of the matter stress tensor. Instabilities caused by caustics of the geodesic flow, inherent in this model, serve as a motivation for an alternative conformal extension of Einstein theory, based on the generalized Proca vector field. A potential part of this field modifies the inflationary stage in cosmology, whereas its rotational part at the post inflationary epoch might simulate rotating flows of dark matter.

  1. Parallel continuation-based global optimization for molecular conformation and protein folding

    SciTech Connect (OSTI)

    Coleman, T.F.; Wu, Z. [Cornell Univ., Ithaca, NY (United States)

    1994-12-31

    This paper presents the authors` recent work on developing parallel algorithms and software for solving the global minimization problem for molecular conformation, especially protein folding. Global minimization problems are difficult to solve when the objective functions have many local minimizers, such as the energy functions for protein folding. In their approach, to avoid directly minimizing a ``difficult`` function, a special integral transformation is introduced to transform the function into a class of gradually deformed, but ``smoother`` or ``easier`` functions. An optimization procedure is then applied to the new functions successively, to trace their solutions back to the original function. The method can be applied to a large class of nonlinear partially separable functions including energy functions for molecular conformation and protein folding. Mathematical theory for the method, as a special continuation approach to global optimization, is established. Algorithms with different solution tracing strategies are developed. Different levels of parallelism are exploited for the implementation of the algorithms on massively parallel architectures.

  2. MISSOURI UNIVERSITY OF SCIENCE

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

    BAI PRINCIPAL INVESTIGATOR STUDY AND PILOT TEST OF PREFORMED PARTICLE GEL CONFORMANCE ... and Technology August 2015 Study and Pilot Test of Preformed Particle Gel Conformance ...

  3. Method and apparatus for controlled size distribution of gel microspheres formed from aqueous dispersions

    DOE Patents [OSTI]

    Ryon, Allen D. (Oak Ridge, TN); Haas, Paul A. (Knoxville, TN); Vavruska, John S. (Santa Fe, NM)

    1984-01-01

    The present invention is directed to a method and apparatus for making a population of dense, closely size-controlled microspheres by sol-gel procedures wherein said microspheres are characterized by a significant percentage of said population being within a predetermined, relatively narrow size range. Microsphere populations thus provided are useful in vibratory-packed processes for nuclear fuels to be irradiated in LWR- and FBR-type nuclear reactors.

  4. Sol-gel-derived Epitaxial Nanocomposite Thin Films with Large Sharp

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

    Magnetoelectric Effect | Energy Frontier Research Centers Sol-gel-derived Epitaxial Nanocomposite Thin Films with Large Sharp Magnetoelectric Effect Home Author: B. Liu, T. Sun, J. He, V. P. Dravid Year: 2010 Abstract: Nanostructures of multiferroic materials have drawn increasing interest due to the enhanced magnetoelectric coupling and potential for next-generation multifunctional devices. Most of these structures are typically prepared by thin film evaporation approaches. Herein, however,

  5. Sol-gel kinetics for the preparation of inorganic/organic siloxane copolymers

    SciTech Connect (OSTI)

    Rankin, S.E.; Macosko, C.W.; McCormick, A.V.

    1996-12-31

    A model is described which incorporates hydrolysis pseudo-equilibrium to quantify the evolution of silicon site distributions in sol-gel polymerization up to higher conversions than previously possible. {sup 29}Si nuclear magnetic resonance spectroscopy data are used (1) to provide a means of recognizing hydrolysis pseudo-equilibrium and (2) to provide examples where different substitution effects on condensation rate coefficients caused by branching are observed. Extension of the model to copolymerization is discussed.

  6. Chemical sensing of copper phthalocyanine sol-gel glass through organic vapors

    SciTech Connect (OSTI)

    Ridhi, R.; Gawri, Isha; Abbas, Saeed J.; Saini, G. S. S.; Tripathi, S. K.

    2015-05-15

    The sensitivities of metallophthalocyanine to vapor phase electron donors has gained significance in many areas and disciplines due to their sensing properties and ease of operation. In the present study the interaction mechanism of organic vapors in Copper Phthalocyanine (CuPc) sol-gel glass has been studied. The interaction mechanism is affected by many factors like morphology, electrical or optical properties of film. CuPc sol-gel glass has been synthesized using chemical route sol-gel method. Its structural characterization was conducted using XRD and the amorphous nature of the silicate glass was observed with characteristic ? polymorph phase of CuPc at around 6.64° with 13.30Ć interplanar spacing. The size of the particle as determined using Debbye Scherre’s formula comes out around 15.5?nm. The presence of ? phase of CuPc was confirmed using FTIR with the appearance of crystal parameter marker band at 787?cm-1. Apart from this A2u and Eu symmetry bands of CuPc have also been observed. The UV absorption spectrum of CuPc exhibits absorption peaks owing to ?? ?* and n? ?* transitions. A blue shift in the prepared CuPc glass has been observed as compared to the dopant CuPc salt indicating increase of band gap. A split in B (Soret) band and Q band appears as observed with the help of Lorentzian fitting. CuPc sol gel glass has been exposed with chemical vapors of Methanol, Benzene and Bromine individually and the electrical measurements have been carried out. These measurements show the variation in conductivity and the interaction mechanism has been analyzed.

  7. Demonstration of DeconGelTM at the Oak Ridge National Laboratory Building 2026

    Office of Environmental Management (EM)

    Demonstration D&D Toolbox - ORNL Decontamination Agent Demonstration Demonstration of decontamination agent at ORNL Building 2026 Page 1 of 2 Oak Ridge National Laboratory Tennessee Hawaii Demonstration of DeconGel(tm) at the Oak Ridge National Laboratory Building 2026 Challenge In 2003 an area behind the hot cells in Building 2026 at the Oak Ridge National Laboratory (ORNL) was flooded with highly contaminated liquids when a liquid low level waste pipe became clogged. The main contaminants

  8. Solid-to-hybrid transitioning armature railgun with non-conforming-to-prejudice bore profile

    DOE Patents [OSTI]

    Solberg, Jerome Michael

    2012-12-04

    An improved railgun, railgun barrel, railgun projectile, and railgun system for accelerating a solid-to-hybrid transitioning armature projectile using a barrel having a bore that does not conform to a cross-sectional profile of the projectile, to contact and guide the projectile only by the rails in a low pressure bore volume so as to minimize damage, failure, and/or underperformance caused by plasma armatures, insulator ablation, and/or restrikes.

  9. System and method for forming synthetic protein crystals to determine the conformational structure by crystallography

    DOE Patents [OSTI]

    Craig, G.D.; Glass, R.; Rupp, B.

    1997-01-28

    A method is disclosed for forming synthetic crystals of proteins in a carrier fluid by use of the dipole moments of protein macromolecules that self-align in the Helmholtz layer adjacent to an electrode. The voltage gradients of such layers easily exceed 10{sup 6}V/m. The synthetic protein crystals are subjected to x-ray crystallography to determine the conformational structure of the protein involved. 2 figs.

  10. System and method for forming synthetic protein crystals to determine the conformational structure by crystallography

    DOE Patents [OSTI]

    Craig, George D.; Glass, Robert; Rupp, Bernhard

    1997-01-01

    A method for forming synthetic crystals of proteins in a carrier fluid by use of the dipole moments of protein macromolecules that self-align in the Helmholtz layer adjacent to an electrode. The voltage gradients of such layers easily exceed 10.sup.6 V/m. The synthetic protein crystals are subjected to x-ray crystallography to determine the conformational structure of the protein involved.

  11. Revealing a New Conformational State in a Chloride/Proton Exchanger |

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

    Stanford Synchrotron Radiation Lightsource Revealing a New Conformational State in a Chloride/Proton Exchanger Friday, January 29, 2016 "CLC" transporters are secondary active-transport membrane proteins that catalyze the transmembrane exchange of chloride (Cl-) for protons (H+). This exchange plays an essential role in proper cardiovascular, neuronal, muscular and epithelial functions. Several diseases arise from CLC defects, and several CLCs are therapeutic targets. For example,

  12. Composition for selective placement of polymer gels for profile control in thermal oil recovery

    SciTech Connect (OSTI)

    Shu, P.; Shu, W.R.

    1991-12-10

    This patent describes a method for closing pores in a more permeable zone of a formation where a cross-linked gel is obtained by activating components at a temperature greater than about 300{degrees} F. It comprises making an aqueous mixture comprising: a water dispersible polymer selected from a member of the group consisting of polyvinyl alcohol, polyvinyl alcohol copolymer, and sulfonated polyvinyl alcohol which member has at least one functional group selected from a member of the group consisting of an amine, an amide, a hydroxyl, or a thiol group; a phenolic compound, and an aldehyde producing compound which when heated to a temperature above about 300{degrees} F. in a formation decomposes to yield an aldehyde and forms a phenolic resin which combines with the polymer and makes a solid gel sufficient to close one or more permeable zones in the formation; injecting the aqueous mixture into the more permeable zone; and allowing the mixture to remain in the zone for a time sufficient to reach a temperature above about 300{degrees} F. and form a solid gel sufficient to close pores in the zone.

  13. Light-induced charge separation and storage in titanium oxide gels

    SciTech Connect (OSTI)

    Kuznetsov, A.I.; Kameneva, O.; Alexandrov, A.; Bityurin, N.; Marteau, Ph.; Chhor, K.; Kanaev, A.; Sanchez, C.

    2005-02-01

    We report on the interaction of light with a particular class of media--wet gels, which in contrast to sols of nanoparticles possess a macroscopic bulk structure, and which differ from conventional solids by the existence of the internal liquid-solid interface. We show, taking an absorption cross section of trapped electrons from Safrany, Gao, and Rabani [J. Phys. Chem. B 104, 5848 (2000)], that a separation of charges with quantum efficiency as high as 46% appears under the band-gap irradiation of titanium oxide gels: electrons are stored in the gel network as Ti{sup 3+} centers, whereas holes are stored in the liquid phase. Under a prolonged UV-laser irradiation, more than 14% of Ti{sup 4+} centers can be converted into Ti{sup 3+}. Their lifetime can be extremely long and exceeds months at room temperature. The trapped electrons are responsible for a 'dark' absorption continuum covering the spectral range from 350 nm to 2.5 {mu}m.

  14. Synthesis of Yttria-Stabilized Zirconia Aerogels by a Non-Alkoxide Sol-Gel Route

    SciTech Connect (OSTI)

    Chervin, C N; Clapsaddle, B J; Chiu, H W; Gash, A E; Satcher, Jr., J H; Kauzlarich, S M

    2005-02-11

    Homogeneous, nanocrystalline powders of yttria-stabilized zirconia were prepared using a nonalkoxide sol-gel method. Monolithic gels, free of precipitation, were prepared by addition of propylene oxide to aqueous solutions of Zr{sup 4+} and Y{sup 3+} chlorides at room temperature. The gels were dried with supercritical CO{sub 2}(l), resulting in amorphous aerogels that crystallized into cubic stabilized ZrO{sub 2} following calcination at 500 C. The aerogels and resulting crystalline products were characterized using in-situ temperature profile X-ray diffraction, thermal analysis, transmission electron microscopy (TEM), scanning electron microscopy (SEM), and nitrogen adsorption/desorption analysis. TEM and N{sub 2} adsorption/desorption analysis of an aerogel indicated a porous network structure with a high surface area (409 m{sup 2}/g). The crystallized yttria-stabilized zirconia maintained high surface area (159 m{sup 2}/g) upon formation of homogeneous, nanoparticles ({approx}10 nm). Ionic conductivity at 1000 C of sintered YSZ (1500 C, 3 hours) prepared by this method, was 0.13 {+-} 0.02 {Omega}{sup -1} cm{sup -1}. Activation energies for the conduction processes from 1000-550 C and 550-400 C, were 0.95 {+-} 0.09 and 1.12 {+-} 0.05 eV, respectively. This is the first reported synthesis and characterization of yttria-stabilized zirconia via an aerogel precursor.

  15. Synthesis of Sol-Gel Matrices for Encapsulation of Enzymes Using an Aqueous Route

    SciTech Connect (OSTI)

    Ashley, C.S.; Bhatia, R.B.; Brinker, C.J.; Harris, T.M.

    1998-11-23

    Sol-gel matrices are promising host materials for potential chemical and biosensor applications. Previous studies have focused on modified sol-gel routes using alkoxides for encapsulation of enzymes. However the formation of alcohol as a byproduct during hydrolysis and condensation reactions poses limitations. We report the immobilization of glucose oxidase and peroxidase in silica prepared by an aqueous route which may provide a more favorable environment for the biomolecules. A two step aqueous sol-gel procedure using sodium silicate as the precursor was developed to encapsulate the enzymes and the dye precursor, o-dianisidine. Glucose oxidase catalyzes the oxidation of glucose to give gluconic acid and hydrogen peroxide. Peroxidase then catalyzes the reaction of the dye precursor with hydrogen peroxide to produce a colored product. The kinetics of the coupled enzymatic reactions were monitored by optical spectroscopy and compared to those occurring in tetramethyl orthosilicate (TMOS) derived silica matrices developed by Yamanaka. Enhanced kinetics in the aqueous silicate matrices were related to differences in the host microstructure as elucidated by microstructural comparisons of the corresponding aerogels.

  16. Conformation-dependent backbone geometry restraints set a new standard for protein crystallographic refinement

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Moriarty, Nigel W.; Tronrud, Dale E.; Adams, Paul D.; Karplus, P. Andrew

    2014-06-17

    Ideal values of bond angles and lengths used as external restraints are crucial for the successful refinement of protein crystal structures at all but the highest of resolutions. The restraints in common usage today have been designed based on the assumption that each type of bond or angle has a single ideal value independent of context. However, recent work has shown that the ideal values are, in fact, sensitive to local conformation, and as a first step toward using such information to build more accurate models, ultra-high resolution protein crystal structures have been used to derive a conformation-dependent library (CDL)more » of restraints for the protein backbone (Berkholz et al. 2009. Structure. 17, 1316). Here, we report the introduction of this CDL into the Phenix package and the results of test refinements of thousands of structures across a wide range of resolutions. These tests show that use of the conformation dependent library yields models that have substantially better agreement with ideal main-chain bond angles and lengths and, on average, a slightly enhanced fit to the X-ray data. No disadvantages of using the backbone CDL are apparent. In Phenix usage of the CDL can be selected by simply specifying the cdl=True option. This successful implementation paves the way for further aspects of the context-dependence of ideal geometry to be characterized and applied to improve experimental and predictive modelling accuracy.« less

  17. Conformation-dependent backbone geometry restraints set a new standard for protein crystallographic refinement

    SciTech Connect (OSTI)

    Moriarty, Nigel W.; Tronrud, Dale E.; Adams, Paul D.; Karplus, P. Andrew

    2014-06-17

    Ideal values of bond angles and lengths used as external restraints are crucial for the successful refinement of protein crystal structures at all but the highest of resolutions. The restraints in common usage today have been designed based on the assumption that each type of bond or angle has a single ideal value independent of context. However, recent work has shown that the ideal values are, in fact, sensitive to local conformation, and as a first step toward using such information to build more accurate models, ultra-high resolution protein crystal structures have been used to derive a conformation-dependent library (CDL) of restraints for the protein backbone (Berkholz et al. 2009. Structure. 17, 1316). Here, we report the introduction of this CDL into the Phenix package and the results of test refinements of thousands of structures across a wide range of resolutions. These tests show that use of the conformation dependent library yields models that have substantially better agreement with ideal main-chain bond angles and lengths and, on average, a slightly enhanced fit to the X-ray data. No disadvantages of using the backbone CDL are apparent. In Phenix usage of the CDL can be selected by simply specifying the cdl=True option. This successful implementation paves the way for further aspects of the context-dependence of ideal geometry to be characterized and applied to improve experimental and predictive modelling accuracy.

  18. Facet-selective nucleation and conformal epitaxy of Ge shells on Si nanowires

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Nguyen, Binh -Minh; Swartzentruber, Brian; Ro, Yun Goo; Dayeh, Shadi A.

    2015-10-08

    Knowledge of nanoscale heteroepitaxy is continually evolving as advances in material synthesis reveal new mechanisms that have not been theoretically predicted and are different than what is known about planar structures. In addition to a wide range of potential applications, core/shell nanowire structures offer a useful template to investigate heteroepitaxy at the atomistic scale. We show that the growth of a Ge shell on a Si core can be tuned from the theoretically predicted island growth mode to a conformal, crystalline, and smooth shell by careful adjustment of growth parameters in a narrow growth window that has not been exploredmore » before. In the latter growth mode, Ge adatoms preferentially nucleate islands on the {113} facets of the Si core, which outgrow over the {220} facets. Islands on the low-energy {111} facets appear to have a nucleation delay compared to the {113} islands; however, they eventually coalesce to form a crystalline conformal shell. As a result, synthesis of epitaxial and conformal Si/Ge/Si core/multishell structures enables us to fabricate unique cylindrical ring nanowire field-effect transistors, which we demonstrate to have steeper on/off characteristics than conventional core/shell nanowire transistors.« less

  19. Bolus electron conformal therapy for the treatment of recurrent inflammatory breast cancer: a case report

    SciTech Connect (OSTI)

    Kim, Michelle M.; Kudchadker, Rajat J.; Kanke, James E.; Zhang, Sean; Perkins, George H.

    2012-07-01

    The treatment of locoregionally recurrent breast cancer in patients who have previously undergone radiation therapy is challenging. Special techniques are often required that both eradicate the disease and minimize the risks of retreatment. We report the case of a patient with an early-stage left breast cancer who developed inflammatory-type recurrence requiring re-irradiation of the chest wall using bolus electron conformal therapy with image-guided treatment delivery. The patient was a 51-year-old woman who had undergone lumpectomy, axillary lymph node dissection, and adjuvant whole-breast radiation therapy for a stage I left breast cancer in June 1998. In March 2009, she presented at our institution with biopsy-proven recurrent inflammatory carcinoma and was aggressively treated with multi-agent chemotherapy followed by mastectomy that left a positive surgical margin. Given the patient's prior irradiation and irregular chest wall anatomy, bolus electron conformal therapy was used to treat her chest wall and draining lymphatics while sparing the underlying soft tissue. The patient still had no evidence of disease 21 months after treatment. Our results indicate that bolus electron conformal therapy is an accessible, effective radiation treatment approach for recurrent breast cancer in patients with irregular chest wall anatomy as a result of surgery. This approach may complement standard techniques used to reduce locoregional recurrence in the postmastectomy setting.

  20. Method of making large area conformable shape structures for detector/sensor applications using glass drawing technique and postprocessing

    DOE Patents [OSTI]

    Ivanov, Ilia N. (Knoxville, TN); Simpson, John T. (Clinton, IN)

    2012-01-24

    A method of making a large area conformable shape structure comprises drawing a plurality of tubes to form a plurality of drawn tubes, and cutting the plurality of drawn tubes into cut drawn tubes of a predetermined shape. The cut drawn tubes have a first end and a second end along the longitudinal direction of the cut drawn tubes. The method further comprises conforming the first end of the cut drawn tubes into a predetermined curve to form the large area conformable shape structure, wherein the cut drawn tubes contain a material.

  1. The Initiation of Bacterial DNA Replication

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

    The Initiation of Bacterial DNA Replication Print For the first time, scientists have determined the structure of the initiator of bacterial DNA replication. It is already known that such replication is controlled by a protein known as DnaA, a member of the AAA+ superfamily of ATPases. What has now been discovered is that the core of the initiator is not the closed-ring structure expected for this system. Instead, DnaA forms an open right-handed helix. In addition, the architecture indicates

  2. The Initiation of Bacterial DNA Replication

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

    The Initiation of Bacterial DNA Replication Print For the first time, scientists have determined the structure of the initiator of bacterial DNA replication. It is already known that such replication is controlled by a protein known as DnaA, a member of the AAA+ superfamily of ATPases. What has now been discovered is that the core of the initiator is not the closed-ring structure expected for this system. Instead, DnaA forms an open right-handed helix. In addition, the architecture indicates

  3. The Initiation of Bacterial DNA Replication

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

    The Initiation of Bacterial DNA Replication Print For the first time, scientists have determined the structure of the initiator of bacterial DNA replication. It is already known that such replication is controlled by a protein known as DnaA, a member of the AAA+ superfamily of ATPases. What has now been discovered is that the core of the initiator is not the closed-ring structure expected for this system. Instead, DnaA forms an open right-handed helix. In addition, the architecture indicates

  4. Low-melting elemental metal or fusible alloy encapsulated polymerization initiator for delayed initiation

    DOE Patents [OSTI]

    Hermes, Robert E.

    2015-12-22

    An encapsulated composition for polymerization includes an initiator composition for initiating a polymerization reaction, and a capsule prepared from an elemental metal or fusible alloy having a melting temperature from about 20.degree. C. to about 200.degree. C. A fluid for polymerization includes the encapsulated composition and a monomer. When the capsule melts or breaks open, the initiator is released.

  5. Nearly Finished Genomes Produced Using Gel Microdroplet Culturing (Seventh Annual Sequencing, Finishing, Analysis in the Future (SFAF) Meeting 2012)

    ScienceCinema (OSTI)

    Fitzsimmons, Michael [LANL

    2013-01-25

    Michael Fitzsimmons from Los Alamos National Laboratory gives a talk titled "Nearly Finished Genomes Produced Using Gel Microdroplet Culturing" at the 7th Annual Sequencing, Finishing, Analysis in the Future (SFAF) Meeting held in June, 2012 in Santa Fe, NM.

  6. Hawaii Clean Energy Initiative Scenario Analysis

    Broader source: Energy.gov [DOE]

    Analysis of potential policy options to help the state reach the 70% Hawaii Clean Energy Initiative (HCEI) goal, including possible pathways to attain the goal based on currently available technology.

  7. Advances in Modeling Exploding Bridgewire Initiation

    SciTech Connect (OSTI)

    Hrousis, C A; Christensen, J S

    2010-03-10

    There is great interest in applying magnetohydrodynamic (MHD) simulation techniques to the designs of electrical high explosive (HE) initiators, for the purpose of better understanding a design's sensitivities, optimizing its performance, and/or predicting its useful lifetime. Two MHD-capable LLNL codes, CALE and ALE3D, are being used to simulate the process of ohmic heating, vaporization, and plasma formation in exploding bridgewires (EBW). Initiation of the HE is simulated using Ignition & Growth reactive flow models. 1-D, 2-D and 3-D models have been constructed and studied. The models provide some intuitive explanation of the initiation process and are useful for evaluating the potential impact of identified aging mechanisms (such as the growth of intermetallic compounds or powder sintering). The end product of this work is a simulation capability for evaluating margin in proposed, modified or aged initiation system designs.

  8. Solar America Initiative (Across America Map)

    SciTech Connect (OSTI)

    Not Available

    2007-06-01

    This factsheet gives an overview of the Solar America Initiative (SAI) using a map to show locations of the Solar America Cities, Solar America Showcases and other market transformation and research and development projects.

  9. Alaska Village Initiatives Rural Business Conference

    Broader source: Energy.gov [DOE]

    Hosted by the Alaska Village Initiative, the 24th Annual Rural Small Business Conference brings together rural businesses and leaders to provide them with networking opportunities, training, and technical information.

  10. Green Initiatives Keep Hanford Site Environmentally Responsible

    Broader source: Energy.gov [DOE]

    RICHLAND, Wash. ―Though the Hanford site is technically located in the desert, it has a decidedly “green” tint due to many successful pollution prevention and environmental stewardship initiatives.

  11. Webinar December 2: Materials Genome Initiative

    Broader source: Energy.gov [DOE]

    The Energy Department will present a live webinar entitled "Materials Genome Initiative" on Tuesday, December 2, from 12:00 to 1:00 p.m. Eastern Standard Time.

  12. Augmenting Probabilistic Risk Assesment with Malevolent Initiators

    SciTech Connect (OSTI)

    Curtis Smith; David Schwieder

    2011-11-01

    As commonly practiced, the use of probabilistic risk assessment (PRA) in nuclear power plants only considers accident initiators such as natural hazards, equipment failures, and human error. Malevolent initiators are ignored in PRA, but are considered the domain of physical security, which uses vulnerability assessment based on an officially specified threat (design basis threat). This paper explores the implications of augmenting and extending existing PRA models by considering new and modified scenarios resulting from malevolent initiators. Teaming the augmented PRA models with conventional vulnerability assessments can cost-effectively enhance security of a nuclear power plant. This methodology is useful for operating plants, as well as in the design of new plants. For the methodology, we have proposed an approach that builds on and extends the practice of PRA for nuclear power plants for security-related issues. Rather than only considering 'random' failures, we demonstrated a framework that is able to represent and model malevolent initiating events and associated plant impacts.

  13. Climate Technology Initiative (CTI) | Open Energy Information

    Open Energy Info (EERE)

    Map References: CTI - About1 Climate Technology Initiative is an organization based in Japan. Contents 1 Overview 2 Resources 2.1 CTI Tools 2.2 CTI Programs 3 References...

  14. Initiatives and Projects Contacts | Department of Energy

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

    about any of the initiatives and projects listed on this site, you can use this contact information to reach the office you're interested in: State and Local Energy Efficiency...

  15. March 23, 1983: Strategic Defense Initiative (SDI)

    Broader source: Energy.gov [DOE]

    March 23, 1983President Reagan addresses the nation on national security and announces the Strategic Defense Initiative (SDI), a satellite-based defense system that would destroy incoming missiles...

  16. Applications of Geothermally-Produced Colloidal Silica in Reservoir Management - Smart Gels

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

    Hunt, Jonathan

    2013-01-31

    In enhanced geothermal systems (EGS) the reservoir permeability is often enhanced or created using hydraulic fracturing. In hydraulic fracturing, high fluid pressures are applied to confined zones in the subsurface usually using packers to fracture the host rock. This enhances rock permeability and therefore conductive heat transfer to the circulating geothermal fluid (e.g. water or supercritical carbon dioxide). The ultimate goal is to increase or improve the thermal energy production from the subsurface by either optimal designs of injection and production wells or by altering the fracture permeability to create different zones of circulation that can be exploited in geothermal heat extraction. Moreover, hydraulic fracturing can lead to the creation of undesirable short-circuits or fast flow-paths between the injection and extraction wells leading to a short thermal residence time, low heat recovery, and thus a short-life of the EGS. A potential remedy to these problems is to deploy a cementing (blocking, diverting) agent to minimize short-cuts and/or create new circulation cells for heat extraction. A potential diverting agent is the colloidal silica by-product that can be co-produced from geothermal fluids. Silica gels are abundant in various surface and subsurface applications, yet they have not been evaluated for EGS applications. In this study we are investigating the benefits of silica gel deployment on thermal response of an EGS, either by blocking short-circuiting undesirable pathways as a result of diverting the geofluid to other fractures; or creating, within fractures, new circulation cells for harvesting heat through newly active surface area contact. A significant advantage of colloidal silica is that it can be co-produced from geothermal fluids using an inexpensive membrane-based separation technology that was developed previously using DOE-GTP funding. This co-produced silica has properties that potentially make it useful as a fluid diversion agent for subsurface applications. Colloidal silica solutions exist as low-viscosity fluids during their “induction period” but then undergo a rapid increase in viscosity (gelation) to form a solid gel. The length of the induction period can be manipulated by varying the properties of the solution, such as silica concentration and colloid size. We believe it is possible to produce colloidal silica gels suitable for use as diverting agents for blocking undesirable fast-paths which result in short-circuiting the EGS once hydraulic fracturing has been deployed. In addition, the gels could be used in conventional geothermal fields to increase overall energy recovery by modifying flow.

  17. Nanoscopic Dynamics of Phospholipid in Unilamellar Vesicles: Effect of Gel to Fluid Phase Transition

    SciTech Connect (OSTI)

    Sharma, Veerendra K [ORNL; Mamontov, Eugene [ORNL; Anunciado, Divina B [ORNL; O'Neill, Hugh Michael [ORNL; Urban, Volker S [ORNL

    2015-01-01

    Dynamics of phospholipids in unilamellar vesicles (ULV) is of interest in biology, medical, and food sciences since these molecules are widely used as biocompatible agents and a mimic of cell membrane systems. We have investigated the nanoscopic dynamics of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) phospholipid in ULV as a function of temperature using elastic and quasielastic neutron scattering (QENS). The dependence of the signal on the scattering momentum transfer, which is a critical advantage of neutron scattering techniques, allows the detailed analysis of the lipid motions that cannot be carried out by other means. In agreement with a differential scanning calorimetry measurement, a sharp rise in the elastic scattering intensity below ca. 296 K indicates a phase transition from the high-temperature fluid phase to the low-temperature solid gel phase. The microscopic lipid dynamics exhibits qualitative differences between the solid gel phase (in a measurement at 280 K) and the fluid phase (in a measurement at a physiological temperature of 310 K). The data analysis invariably shows the presence of two distinct motions: the whole lipid molecule motion within a monolayer, or lateral diffusion, and the relatively faster internal motion of the DMPC molecule. The lateral diffusion of the whole lipid molecule is found to be Fickian in character, whereas the internal lipid motions are of localized character, consistent with the structure of the vesicles. The lateral motion slows down by an order of magnitude in the solid gel phase, whereas for the internal motion not only the time scale, but also the character of the motion changes upon the phase transition. In the solid gel phase, the lipids are more ordered and undergo uniaxial rotational motion. However, in the fluid phase, the hydrogen atoms of the lipid tails undergo confined translation diffusion rather than uniaxial rotational diffusion. The localized translational diffusion of the hydrogen atoms of the lipid tails is a manifestation of the flexibility of the chains acquired in the fluid phase. Because of this flexibility, both the local diffusivity and the confinement volume for the hydrogen atoms increase linearly from near the lipid s polar head group to the end of its hydrophobic tail. Our results present a quantitative and detailed picture of the effect of the gel-fluid phase transition on the nanoscopic lipid dynamics in ULV. The data analysis approach developed here has a potential for probing the dynamic response of lipids to the presence of additional cell membrane components.

  18. Applications of Geothermally-Produced Colloidal Silica in Reservoir Management - Smart Gels

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

    Hunt, Jonathan

    In enhanced geothermal systems (EGS) the reservoir permeability is often enhanced or created using hydraulic fracturing. In hydraulic fracturing, high fluid pressures are applied to confined zones in the subsurface usually using packers to fracture the host rock. This enhances rock permeability and therefore conductive heat transfer to the circulating geothermal fluid (e.g. water or supercritical carbon dioxide). The ultimate goal is to increase or improve the thermal energy production from the subsurface by either optimal designs of injection and production wells or by altering the fracture permeability to create different zones of circulation that can be exploited in geothermal heat extraction. Moreover, hydraulic fracturing can lead to the creation of undesirable short-circuits or fast flow-paths between the injection and extraction wells leading to a short thermal residence time, low heat recovery, and thus a short-life of the EGS. A potential remedy to these problems is to deploy a cementing (blocking, diverting) agent to minimize short-cuts and/or create new circulation cells for heat extraction. A potential diverting agent is the colloidal silica by-product that can be co-produced from geothermal fluids. Silica gels are abundant in various surface and subsurface applications, yet they have not been evaluated for EGS applications. In this study we are investigating the benefits of silica gel deployment on thermal response of an EGS, either by blocking short-circuiting undesirable pathways as a result of diverting the geofluid to other fractures; or creating, within fractures, new circulation cells for harvesting heat through newly active surface area contact. A significant advantage of colloidal silica is that it can be co-produced from geothermal fluids using an inexpensive membrane-based separation technology that was developed previously using DOE-GTP funding. This co-produced silica has properties that potentially make it useful as a fluid diversion agent for subsurface applications. Colloidal silica solutions exist as low-viscosity fluids during their “induction period” but then undergo a rapid increase in viscosity (gelation) to form a solid gel. The length of the induction period can be manipulated by varying the properties of the solution, such as silica concentration and colloid size. We believe it is possible to produce colloidal silica gels suitable for use as diverting agents for blocking undesirable fast-paths which result in short-circuiting the EGS once hydraulic fracturing has been deployed. In addition, the gels could be used in conventional geothermal fields to increase overall energy recovery by modifying flow.

  19. Applications of Geothermally-Produced Colloidal Silica in Reservoir Management - Smart Gels

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

    Hunt, Jonathan

    2013-01-31

    In enhanced geothermal systems (EGS) the reservoir permeability is often enhanced or created using hydraulic fracturing. In hydraulic fracturing, high fluid pressures are applied to confined zones in the subsurface usually using packers to fracture the host rock. This enhances rock permeability and therefore conductive heat transfer to the circulating geothermal fluid (e.g. water or supercritical carbon dioxide). The ultimate goal is to increase or improve the thermal energy production from the subsurface by either optimal designs of injection and production wells or by altering the fracture permeability to create different zones of circulation that can be exploited in geothermal heat extraction. Moreover, hydraulic fracturing can lead to the creation of undesirable short-circuits or fast flow-paths between the injection and extraction wells leading to a short thermal residence time, low heat recovery, and thus a short-life of the EGS. A potential remedy to these problems is to deploy a cementing (blocking, diverting) agent to minimize short-cuts and/or create new circulation cells for heat extraction. A potential diverting agent is the colloidal silica by-product that can be co-produced from geothermal fluids. Silica gels are abundant in various surface and subsurface applications, yet they have not been evaluated for EGS applications. In this study we are investigating the benefits of silica gel deployment on thermal response of an EGS, either by blocking short-circuiting undesirable pathways as a result of diverting the geofluid to other fractures; or creating, within fractures, new circulation cells for harvesting heat through newly active surface area contact. A significant advantage of colloidal silica is that it can be co-produced from geothermal fluids using an inexpensive membrane-based separation technology that was developed previously using DOE-GTP funding. This co-produced silica has properties that potentially make it useful as a fluid diversion agent for subsurface applications. Colloidal silica solutions exist as low-viscosity fluids during their “induction period” but then undergo a rapid increase in viscosity (gelation) to form a solid gel. The length of the induction period can be manipulated by varying the properties of the solution, such as silica concentration and colloid size. We believe it is possible to produce colloidal silica gels suitable for use as diverting agents for blocking undesirable fast-paths which result in short-circuiting the EGS once hydraulic fracturing has been deployed. In addition, the gels could be used in conventional geothermal fields to increase overall energy recovery by modifying flow.

  20. commercial buildings initiative | netl.doe.gov

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

    Commercial Buildings Initiative The DOE Building Technologies Office works with the commercial building industry to accelerate the use of energy efficiency technologies in both existing and new commercial buildings. The DOE Building Technologies Office strives to reduce energy consumption across the commercial building sector by developing, demonstrating and deploying cost-effective solutions. Commercial Buildings Initiative: http://www1.eere.energy.gov/buildings/commercial/index.html

  1. Voluntary Initiative: Partnerships Toolkit | Department of Energy

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

    Partnerships Toolkit Voluntary Initiative: Partnerships Toolkit Residential energy efficiency programs are delivered by many different types of organizations and their partners, including utilities, state and local governments, non-profit organizations, and for-profit companies, but no matter which sector delivers the program, the need to work in partnership with different entities can make or break program success. PDF icon Voluntary Initiative: Partnerships Toolkit More Documents &

  2. PROJECT PROFILE: Photovoltaic Stakeholder Engagement Initiatives |

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

    Department of Energy Photovoltaic Stakeholder Engagement Initiatives PROJECT PROFILE: Photovoltaic Stakeholder Engagement Initiatives Funding Opportunity: SuNLaMP SunShot Subprogram: Photovoltaics Location: Sandia National Lab, Albuquerque, NM SunShot Award Amount: $89,000 This project is focused on independent stakeholder engagement activities conducted by Sandia National Laboratory relating to photovoltaic (PV) outreach at the national and international level. APPROACH The International

  3. Ohio Fuel Cell Initiative | Department of Energy

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

    Ohio Fuel Cell Initiative Ohio Fuel Cell Initiative Presented at the Technology Transition Corporation and U.S. Department of Energy Webinar: The Top 5 Fuel Cell States: Why Local Policies Mean Green Growth, June 21, 2011. PDF icon infocalljun21_valente.pdf More Documents & Publications Raising H2 and Fuel Cell Awareness in Ohio Fuel Cells & Renewable Portfolio Standards State of the States: Fuel Cells in America 2014

  4. Tribal Programs, Special Initiatives, and Cooperative Agreements |

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

    Department of Energy Programs, Special Initiatives, and Cooperative Agreements Tribal Programs, Special Initiatives, and Cooperative Agreements EM is involved in the cleanup of nuclear waste at nationwide sites and facilities. The waste, a result of the production of nuclear weapons, has affected sovereign Tribal nations located near these facilities. These Tribal nations have been impacted by different types of waste contamination, and their participation in the EM mission is critical.

  5. Florida Hydrogen Initiative | Department of Energy

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

    Florida Hydrogen Initiative Florida Hydrogen Initiative 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. PDF icon tvp_05_portwood.pdf More Documents & Publications Mechanisms of Sulfur Poisoning of NOx Adsorber (LNT) Materials Deactivation Mechanisms of Base Metal/Zeolite Urea Selective Catalytic Reduction Materials Degradation Mechanisms of Urea Selective Catalytic Reduction Technology

  6. EM Partnering Initiative | Department of Energy

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

    Partnering Initiative EM Partnering Initiative Partnering establishes a collaborative approach among the Government and Contractor to achieve results. Partnering is not a contract; it does not alter the contractual relationship of the two parties. This teaming approach is based upon open communication, collaboration, and commitment to joint success. Partnering refocuses the nature of the working relationship based upon mutual goals and objectives. This model emphasizes early detection of

  7. Network support for system initiated checkpoints

    DOE Patents [OSTI]

    Chen, Dong; Heidelberger, Philip

    2013-01-29

    A system, method and computer program product for supporting system initiated checkpoints in parallel computing systems. The system and method generates selective control signals to perform checkpointing of system related data in presence of messaging activity associated with a user application running at the node. The checkpointing is initiated by the system such that checkpoint data of a plurality of network nodes may be obtained even in the presence of user applications running on highly parallel computers that include ongoing user messaging activity.

  8. Microsoft Word - DOE Initiates EPA Recertificaton Process

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

    DOE Initiates EPA Recertification Process CARLSBAD, N.M., March 24, 2009 - Ten years after the start of disposal operations, the U.S. Department of Energy (DOE) Waste Isolation Pilot Plant (WIPP) will demonstrate its continued compliance with U. S. Environmental Protection Agency (EPA) regulations for radioactive waste disposal. Today, DOE submitted its second Compliance Recertification Application (CRA) to EPA, initiating a recertification process required by Congress. "This application is

  9. Understanding the anisotropic initiation sensitivity of shocked

    Office of Scientific and Technical Information (OSTI)

    pentaerythritol tetranitrate (PETN) single crystals (Journal Article) | SciTech Connect Understanding the anisotropic initiation sensitivity of shocked pentaerythritol tetranitrate (PETN) single crystals Citation Details In-Document Search Title: Understanding the anisotropic initiation sensitivity of shocked pentaerythritol tetranitrate (PETN) single crystals Authors: Kim, K ; Fried, L E ; Yoh, J Publication Date: 2013-08-27 OSTI Identifier: 1212825 Report Number(s): LLNL-JRNL-643055 DOE

  10. California Low Carbon Fuels Infrastructure Investment Initiative |

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

    Department of Energy Low Carbon Fuels Infrastructure Investment Initiative California Low Carbon Fuels Infrastructure Investment Initiative 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon arravt082_ti_bowen_2012_o.pdf More Documents & Publications The Future of Home Heating StateActivity.pdf Hydrogen & Fuel Cells Program Overview

  11. The President's Manufacturing Initiative | Department of Energy

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

    The President's Manufacturing Initiative The President's Manufacturing Initiative Presentation prepared by Dale Hall for the Roadmap Workshop on Manufacturing R&D for the Hydrogen Economy. PDF icon mfg_wkshp_hall.pdf More Documents & Publications The Advanced Manufacturing Partnership and the Advanced Manufacturing National Program Office Roadmap on Manufacturing R&D for the Hydrogen Economy Manufacturing R&D for the Hydrogen Economy Roadmap Workshop

  12. Clean Energy Manufacturing Initiative | Department of Energy

    Energy Savers [EERE]

    Clean Energy Manufacturing Initiative Energy Materials Network Energy Materials Network The Energy Materials Network (EMN) is an enduring national lab-led initiative that aims to dramatically decrease the time-to-market for advanced materials innovations critical to many clean energy technologies. Read more Leadership Perspectives: The Opportunity for Clean Energy Manufacturing Leadership Perspectives: The Opportunity for Clean Energy Manufacturing There is a tremendous opportunity for the

  13. Asset Revitalization Initiative | Department of Energy

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

    Asset Revitalization Initiative The Asset Revitalization Initiative (ARI) focuses on communicating past efforts and lessons learned from DOEñ€™s long history of asset revitalization and focus current and future efforts to improve the efficiency and effectiveness of future land, asset and facility transfer and beneficial reuse. Since the 1950ñ€™s, DOE and its predecessor agencies have completed over 200 transfers of approximately 200,000 acres of land, facilities and other assets for

  14. State and Regional Energy Risk Assessment Initiative

    Broader source: Energy.gov [DOE]

    OE is leading a State and Regional Energy Risk Assessment Initiative to help States better understand risks to their energy infrastructure so they can be better prepared to make informed decisions about their investments, resilience and hardening strategies, and asset management. As part of this Initiative, OE has developed a series of State and Regional Energy Risk Profiles that examine the relative magnitude of the risks that each State's energy infrastructure routinely encounters in comparison with the probable impacts.

  15. Indian Energy Program Initiatives | Department of Energy

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

    Energy Program Initiatives Indian Energy Program Initiatives The Office of Indian Energy approach is, first and foremost, a collaborative one as it works with tribal nations, federal agencies, state governments, non-governmental organizations, and the private sector to support tribally led development of the considerable energy resources that exist on tribal lands. To guide the strategic planning and implementation of the Department's tribal energy programs and policies, Energy Secretary Steven

  16. Materials Genome Initiative | Department of Energy

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

    Emerging Technologies » Materials Genome Initiative Materials Genome Initiative Credit: The White House Credit: The White House Lead Performers: -- National Renewable Energy Laboratory - Golden, CO -- Lawrence Berkeley National Laboratory - Berkeley, CA Project Term: October 2014 to July 2015 Project Background The development of new higher performing materials for buildings and building systems will be a key element of making the high-efficiency, high-performing buildings of the future. The

  17. Initiatives and Projects | Department of Energy

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

    Initiatives and Projects Initiatives and Projects As part of its work to support energy efficiency and renewable energy research, the Office of Energy Efficiency and Renewable Energy has collaborated with private organizations, researchers, and other nations. Here you can read about the results of EERE's collaboration and research activities. This list includes projects completed at the office level, or by the Business Operations or Strategic Programs areas. Read about EERE's cross-cutting,

  18. Hawaii Clean Energy Initiative (HCEI) | Department of Energy

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

    Hawaii Clean Energy Initiative (HCEI) Hawaii Clean Energy Initiative (HCEI) The Hawaii Clean Energy Initiative (HCEI) is an unprecedented effort to transform the entire Hawaii ...

  19. State and Regional Hydrogen Initiatives Meeting, Challenges for...

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

    and Regional Hydrogen Initiatives Meeting, Challenges for State and Regional Hydrogen Initiatives State and Regional Hydrogen Initiatives Meeting, Challenges for State and Regional...

  20. Hawaii Clean Energy Initiative Website | Open Energy Information

    Open Energy Info (EERE)

    Initiative Website Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Hawaii Clean Energy Initiative Website Author Hawaii Clean Energy Initiative...

  1. 2006 Nuclear Energy Research Initiative Awards | Department of...

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

    Nuclear Energy Research Initiative Awards 2006 Nuclear Energy Research Initiative Awards This is the list of winners from the 2006 Nuclear Energy Research Initiative Awards. PDF ...

  2. EERE - Energy Data Initiative | OpenEI Community

    Open Energy Info (EERE)

    EERE - Energy Data Initiative Home > EERE - Energy Data Initiative > Posts by term > EERE - Energy Data Initiative Content Group Activity By term Q & A Feeds Term: EDI Type Term...

  3. EERE - Energy Data Initiative | OpenEI Community

    Open Energy Info (EERE)

    EERE - Energy Data Initiative Home > EERE - Energy Data Initiative > Posts by term > EERE - Energy Data Initiative Content Group Activity By term Q & A Feeds Term: EERE Type Term...

  4. EERE - Energy Data Initiative | OpenEI Community

    Open Energy Info (EERE)

    EERE - Energy Data Initiative Home > EERE - Energy Data Initiative > Posts by term > EERE - Energy Data Initiative Content Group Activity By term Q & A Feeds Term: Datapalooza Type...

  5. EERE - Energy Data Initiative | OpenEI Community

    Open Energy Info (EERE)

    EERE - Energy Data Initiative Home > EERE - Energy Data Initiative > Posts by term > EERE - Energy Data Initiative Content Group Activity By term Q & A Feeds Term: Open Data Type...

  6. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: building load data...

  7. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: datasets Type Term...

  8. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: EERE Type Term...

  9. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: developer Type Term...

  10. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: electric load data...

  11. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: Datapalooza Type...

  12. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: commercial load...

  13. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: dataset Type Term...

  14. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: FRED Type Term...

  15. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: load profile Type...

  16. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: APIs Type Term Title...

  17. Energy Data Initiative (EDI) | OpenEI Community

    Open Energy Info (EERE)

    Energy Data Initiative (EDI) Home > Energy Data Initiative (EDI) > Posts by term > Energy Data Initiative (EDI) Content Group Activity By term Q & A Feeds Term: building load Type...

  18. Carcinoma of the anal canal: Intensity modulated radiation therapy (IMRT) versus three-dimensional conformal radiation therapy (3DCRT)

    SciTech Connect (OSTI)

    Sale, Charlotte; Moloney, Phillip; Mathlum, Maitham

    2013-12-15

    Patients with anal canal carcinoma treated with standard conformal radiotherapy frequently experience severe acute and late toxicity reactions to the treatment area. Roohipour et al. (Dis Colon Rectum 2008; 51: 147–53) stated a patient's tolerance of chemoradiation to be an important prediction of treatment success. A new intensity modulated radiation therapy (IMRT) technique for anal carcinoma cases has been developed at the Andrew Love Cancer Centre aimed at reducing radiation to surrounding healthy tissue. A same-subject repeated measures design was used for this study, where five anal carcinoma cases at the Andrew Love Cancer Centre were selected. Conformal and IMRT plans were generated and dosimetric evaluations were performed. Each plan was prescribed a total of 54 Gray (Gy) over a course of 30 fractions to the primary site. The IMRT plans resulted in improved dosimetry to the planning target volume (PTV) and reduction in radiation to the critical structures (bladder, external genitalia and femoral heads). Statistically there was no difference between the IMRT and conformal plans in the dose to the small and large bowel; however, the bowel IMRT dose–volume histogram (DVH) doses were consistently lower. The IMRT plans were superior to the conformal plans with improved dose conformity and reduced radiation to the surrounding healthy tissue. Anecdotally it was found that patients tolerated the IMRT treatment better than the three-dimensional (3D) conformal radiation therapy. This study describes and compares the planning techniques.

  19. Investigations of initiation spot size effects

    SciTech Connect (OSTI)

    Clarke, Steven A; Akinci, Adrian A; Leichty, Gary; Schaffer, Timothy; Murphy, Michael J; Munger, Alan; Thomas, Keith A

    2010-01-01

    As explosive components become smaller, a greater understanding of the effect of initiation spot size on detonation becomes increasingly critical. A series of tests of the effect of initiation spot size will be described. A series of DOI (direct optical initiation) detonators with initiation spots sizes from {approx}50 um to 1000um have been tested to determine laser parameters for threshold firing of low density PETN pressings. Results will be compared with theoretical predictions. Outputs of the initiation source (DOI ablation) have been characterized by a suite of diagnostics including PDV and schlieren imaging. Outputs of complete detonators have been characterized using PDV, streak, and/or schlieren imaging. At present, we have not found the expected change in the threshold energy to spot size relationship for DOI type detonators found in similar earlier for projectiles, slappers and EBWs. New detonators designs (Type C) are currently being tested that will allow the determination of the threshold for spot sizes from 250 um to 105um, where we hope to see change in the threshold vs. spot size relationship. Also, one test of an extremely small diameter spot size (50um) has resulted in preliminary NoGo only results even at energy densities as much as 8 times the energy density of the threshold results presented here. This gives preliminary evidence that 50um spot may be beyond the critical initiation diameter. The constant threshold energy to spot size relationship in the data to date does however still give some insight into the initiation mechanism of DOI detonators. If the DOI initiation mechanism were a 1D mechanism similar to a slapper or a flyer impact, the expected inflection point in the graph would have been between 300um and 500um diameter spot size, within the range of the data presented here. The lack of that inflection point indicates that the DOI initiation mechanism is more likely a 2D mechanism similar to a sphere or rod projectile. We expect to see a three region response as the results from the smaller spot size Type C detonators are completed.

  20. Asset Revitalization Initiative Update by Cynthia Anderson and...

    Office of Environmental Management (EM)

    Asset Revitalization Initiative 1 Sustainability Efficiency Community The Asset ... Asset Revitalization Initiative Sustainability Efficiency Community * Since 2005, we have ...

  1. Modeling shock initiation in Composition B

    SciTech Connect (OSTI)

    Murphy, M.J.; Lee, E.L.; Weston, A.M.; Williams, A.E.

    1993-05-01

    A hydrodynamic modeling study of the shock initiation behavior of Composition B explosive was performed using the {open_quotes}Ignition and Growth of Reaction in High Explosive{close_quotes} model developed at the Lawrence Livermore National Laboratory. The HE (heterogeneous explosives) responses were computed using the CALE and DYNA2D hydrocodes and then compared to experimental results. The data from several standard shock initiation and HE performance experiments was used to determine the parameters required for the model. Simulations of the wedge tests (pop plots) and failure diameter tests were found to be sufficient for defining the ignition and growth parameters used in the two term version of the computational model. These coefficients were then applied in the response analysis of several Composition B impact initiation experiments. A description of the methodology used to determine the coefficients and the resulting range of useful application of the ignition and growth of reaction model is described.

  2. Setting the Renormalization Scale in QCD: The Principle of Maximum Conformality

    SciTech Connect (OSTI)

    Brodsky, Stanley J.; Di Giustino, Leonardo; /SLAC

    2011-08-19

    A key problem in making precise perturbative QCD predictions is the uncertainty in determining the renormalization scale {mu} of the running coupling {alpha}{sub s}({mu}{sup 2}): The purpose of the running coupling in any gauge theory is to sum all terms involving the {beta} function; in fact, when the renormalization scale is set properly, all non-conformal {beta} {ne} 0 terms in a perturbative expansion arising from renormalization are summed into the running coupling. The remaining terms in the perturbative series are then identical to that of a conformal theory; i.e., the corresponding theory with {beta} = 0. The resulting scale-fixed predictions using the 'principle of maximum conformality' (PMC) are independent of the choice of renormalization scheme - a key requirement of renormalization group invariance. The results avoid renormalon resummation and agree with QED scale-setting in the Abelian limit. The PMC is also the theoretical principle underlying the BLM procedure, commensurate scale relations between observables, and the scale-setting method used in lattice gauge theory. The number of active flavors nf in the QCD {beta} function is also correctly determined. We discuss several methods for determining the PMC/BLM scale for QCD processes. We show that a single global PMC scale, valid at leading order, can be derived from basic properties of the perturbative QCD cross section. The elimination of the renormalization scheme ambiguity using the PMC will not only increase the precision of QCD tests, but it will also increase the sensitivity of collider experiments to new physics beyond the Standard Model.

  3. LDRD Project 52523 final report :Atomic layer deposition of highly conformal tribological coatings.

    SciTech Connect (OSTI)

    Jungk, John Michael (University of Minnesota); Dugger, Michael Thomas; George, Steve M. (University of Colorado); Prasad, Somuri V.; Grubbs, Robert K.; Moody, Neville Reid; Mayer, Thomas Michael; Scharf, Thomas W.; Goeke, Ronald S.; Gerberich, William W. (University of Minnesota)

    2005-10-01

    Friction and wear are major concerns in the performance and reliability of micromechanical (MEMS) devices. While a variety of lubricant and wear resistant coatings are known which we might consider for application to MEMS devices, the severe geometric constraints of many micromechanical systems (high aspect ratios, shadowed surfaces) make most deposition methods for friction and wear-resistance coatings impossible. In this program we have produced and evaluate highly conformal, tribological coatings, deposited by atomic layer deposition (ALD), for use on surface micromachined (SMM) and LIGA structures. ALD is a chemical vapor deposition process using sequential exposure of reagents and self-limiting surface chemistry, saturating at a maximum of one monolayer per exposure cycle. The self-limiting chemistry results in conformal coating of high aspect ratio structures, with monolayer precision. ALD of a wide variety of materials is possible, but there have been no studies of structural, mechanical, and tribological properties of these films. We have developed processes for depositing thin (<100 nm) conformal coatings of selected hard and lubricious films (Al2O3, ZnO, WS2, W, and W/Al{sub 2}O{sub 3} nanolaminates), and measured their chemical, physical, mechanical and tribological properties. A significant challenge in this program was to develop instrumentation and quantitative test procedures, which did not exist, for friction, wear, film/substrate adhesion, elastic properties, stress, etc., of extremely thin films and nanolaminates. New scanning probe and nanoindentation techniques have been employed along with detailed mechanics-based models to evaluate these properties at small loads characteristic of microsystem operation. We emphasize deposition processes and fundamental properties of ALD materials, however we have also evaluated applications and film performance for model SMM and LIGA devices.

  4. Ligand-induced conformational changes in a thermophilic ribose-binding protein

    SciTech Connect (OSTI)

    Cuneo, Matthew J.; Beese, Lorena S.; Hellinga, Homme W.

    2009-05-21

    Members of the periplasmic binding protein (PBP) superfamily are involved in transport and signaling processes in both prokaryotes and eukaryotes. Biological responses are typically mediated by ligand-induced conformational changes in which the binding event is coupled to a hinge-bending motion that brings together two domains in a closed form. In all PBP-mediated biological processes, downstream partners recognize the closed form of the protein. This motion has also been exploited in protein engineering experiments to construct biosensors that transduce ligand binding to a variety of physical signals. Understanding the mechanistic details of PBP conformational changes, both global (hinge bending, twisting, shear movements) and local (rotamer changes, backbone motion), therefore is not only important for understanding their biological function but also for protein engineering experiments. Here we present biochemical characterization and crystal structure determination of the periplasmic ribose-binding protein (RBP) from the hyperthermophile Thermotoga maritima in its ribose-bound and unliganded state. The T. maritima RBP (tmRBP) has 39% sequence identity and is considerably more resistant to thermal denaturation (appTm value is 108 C) than the mesophilic Escherichia coli homolog (ecRBP) (appTm value is 56 C). Polar ligand interactions and ligand-induced global conformational changes are conserved among ecRBP and tmRBP; however local structural rearrangements involving side-chain motions in the ligand-binding site are not conserved. Although the large-scale ligand-induced changes are mediated through similar regions, and are produced by similar backbone movements in tmRBP and ecRBP, the small-scale ligand-induced structural rearrangements differentiate the mesophile and thermophile. This suggests there are mechanistic differences in the manner by which these two proteins bind their ligands and are an example of how two structurally similar proteins utilize different mechanisms to form a ligand-bound state.

  5. Integrated Renewable Energy and Campus Sustainability Initiative

    SciTech Connect (OSTI)

    Uthoff, Jay; Jensen, Jon; Bailey, Andrew

    2013-09-25

    Renewable energy, energy conservation, and other sustainability initiatives have long been a central focus of Luther College. The DOE funded Integrated Renewable Energy and Campus Sustainability Initiative project has helped accelerate the College’s progress toward carbon neutrality. DOE funds, in conjunction with institutional matching funds, were used to fund energy conservation projects, a renewable energy project, and an energy and waste education program aimed at all campus constituents. The energy and waste education program provides Luther students with ideas about sustainability and conservation guidelines that they carry with them into their future communities.

  6. Modular initiator with integrated optical diagnostic

    DOE Patents [OSTI]

    Alam, M. Kathleen (Cedar Crest, NM); Schmitt, Randal L. (Tijeras, NM); Welle, Eric J. (Niceville, FL); Madden, Sean P. (Arlington, MA)

    2011-05-17

    A slapper detonator which integrally incorporates an optical wavequide structure for determining whether there has been degradation of the explosive in the explosive device that is to be initiated by the detonator. Embodiments of this invention take advantage of the barrel-like character of a typical slapper detonator design. The barrel assembly, being in direct contact with the energetic material, incorporates an optical diagnostic device into the barrel assembly whereby one can monitor the state of the explosive material. Such monitoring can be beneficial because the chemical degradation of the explosive plays an important in achieving proper functioning of a detonator/initiator device.

  7. Clean Coal Power Initiative | Department of Energy

    Energy Savers [EERE]

    Clean Coal Power Initiative Clean Coal Power Initiative "Clean coal technology" describes a new generation of energy processes that sharply reduce air emissions and other pollutants from coal-burning power plants. In the late 1980s and early 1990s, the U.S. Department of Energy conducted a joint program with industry and State agencies to demonstrate the best of these new technologies at scales large enough for companies to make commercial decisions. More than 20 of the technologies

  8. Clean Energy Manufacturing Initiative Southeast Regional Summit

    Broader source: Energy.gov [DOE]

    Registration is now open for the Clean Energy Manufacturing Initiative’s (CEMI) Southeast Regional Summit! The all-day conference, hosted by the U.S. Department of Energy (DOE), will take place on July 9 in Atlanta, Georgia, at the Renaissance Atlanta Midtown Hotel. The Southeast Regional Summit will bring together leaders from industry, academia, and government to focus on competitiveness and innovation in clean energy manufacturing throughout the southeastern United States. The Summit is the third in a series organized around the country, and will convene key stakeholders to:

  9. Hidden conformal symmetry of rotating black holes in minimal five-dimensional gauged supergravity

    SciTech Connect (OSTI)

    Setare, M. R.; Kamali, V.

    2010-10-15

    In the present paper we show that for a low frequency limit the wave equation of a massless scalar field in the background of nonextremal charged rotating black holes in five-dimensional minimal gauged and ungauged supergravity can be written as the Casimir of an SL(2,R) symmetry. Our result shows that the entropy of the black hole is reproduced by the Cardy formula. Also the absorption cross section is consistent with the finite temperature absorption cross section for a two-dimensional conformal field theory.

  10. Integrable perturbations of conformal field theories and Yetter-Drinfeld modules

    SciTech Connect (OSTI)

    BĂŒcher, David; Runkel, Ingo

    2014-11-15

    In this paper we relate a problem in representation theory — the study of Yetter-Drinfeld modules over certain braided Hopf algebras — to a problem in two-dimensional quantum field theory, namely, the identification of integrable perturbations of a conformal field theory. A prescription that parallels Lusztig's construction allows one to read off the quantum group governing the integrable symmetry. As an example, we illustrate how the quantum group for the loop algebra of sl(2) appears in the integrable structure of the perturbed uncompactified and compactified free boson.

  11. Electroanalytical applications of screen-printable surfactant-induced sol-gel graphite composites

    DOE Patents [OSTI]

    Guadalupe, Ana R. (San Juan, PR); Guo, Yizhu (San Juan, PR)

    2001-05-15

    A process for preparing sol-gel graphite composite electrodes is presented. This process preferably uses the surfactant bis(2-ethylhexyl) sulfosuccinate (AOT) and eliminates the need for a cosolvent, an acidic catalyst, a cellulose binder and a thermal curing step from prior art processes. Fabrication of screen-printed electrodes by this process provides a simple approach for electroanalytical applications in aqueous and nonaqueous solvents. Examples of applications for such composite electrodes produced from this process include biochemical sensors such as disposable, single-use glucose sensors and ligand modified composite sensors for metal ion sensitive sensors.

  12. Method and apparatus for controlled size distribution of gel microspheres formed from aqueous dispersions. [Patent application

    DOE Patents [OSTI]

    Ryon, A.D.; Haas, P.A.; Vavruska, J.S.

    1982-01-19

    The present invention is directed to a method and apparatus for making a population of dense, closely size-controlled microspheres by sol-gel procedures wherein said microspheres are characterized by a significant percentage of said population being within a predetermined, relatively narrow size range. This is accomplished by subjecting aqueous dispersions of a sol, within a water-immiscible organic liquid to a turbulent flow. Microsphere populations thus provided are useful in vibratory-packed processes for nuclear fuels to be irradiated in LWR- and FBR-type nuclear reactors.

  13. Structured copolymers and their use as absorbents, gels and carriers of metal ions

    DOE Patents [OSTI]

    Hedstrand, David M. (Midland, MI); Helmer, Bradley J. (Midland, MI); Tomalia, Donald A. (Midland, MI)

    1996-01-01

    Dense star polymers or dendrimers having a highly branched interior structure capable of associating or chelating with metal ions are modified by capping with a hydrophobic group capable of providing a hydrophobic outer shell. The modified dendrimers are useful for dispersing metal ions in a non-aqueous polymer matrix. Also dense star polymers or dendrimers having a highly branched hydrophilic interior structure are modified by capping with a hydrophobic group capable of providing a hydrophobic outer shell, which modified polymers are useful as gels and surfactants.

  14. pH-sensitive methacrylic copolymer gels and the production thereof

    DOE Patents [OSTI]

    Mallapragada, Surya K. (Ames, IA); Anderson, Brian C. (Lake Bluff, IA)

    2007-05-15

    The present invention provides novel gel forming methacrylic blocking copolymers that exhibit cationic pH-sensitive behavior as well as good water solubility. The copolymers are constructed by polymerization of a tertiary amine methacrylate with either a (poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) polymer, such as the commercially available Pluronic.RTM. polymers, or a poly(ethylene glycol)methyl ether polymer. The polymers may be used for drug and gene delivery, protein separation, as structural supplements, and more.

  15. Structured copolymers and their use as absorbents, gels and carriers of metal ions

    DOE Patents [OSTI]

    Hedstrand, D.M.; Helmer, B.J.; Tomalia, D.A.

    1996-10-01

    Dense star polymers or dendrimers having a highly branched interior structure capable of associating or chelating with metal ions are modified by capping with a hydrophobic group capable of providing a hydrophobic outer shell. The modified dendrimers are useful for dispersing metal ions in a non-aqueous polymer matrix. Also dense star polymers or dendrimers having a highly branched hydrophilic interior structure are modified by capping with a hydrophobic group capable of providing a hydrophobic outer shell, which modified polymers are useful as gels and surfactants.

  16. Method For Removing Volatile Components From A Gel-Cast Ceramic Article

    DOE Patents [OSTI]

    Klug, Frederic Joseph (Schenectady, NY); DeCarr, Sylvia Marie (Schenectady, NY)

    2004-09-07

    A method of removing substantially all of the volatile component in a green, volatile-containing ceramic article is disclosed. The method comprises freezing the ceramic article; and then subjecting the frozen article to a vacuum for a sufficient time to freeze-dry the article. Frequently, the article is heated while being freeze-dried. Use of this method efficiently reduces the propensity for any warpage of the article. The article is often formed from a ceramic slurry in a gel-casting process. A method for fabricating a ceramic core used in investment casting is also described.

  17. SunShot Initiative Portfolio Book 2014

    SciTech Connect (OSTI)

    Solar Energy Technologies Office

    2014-05-01

    The 2014 SunShot Initiative Portfolio Book outlines the progress towards the goals outlined in the SunShot Vision Study. Contents include overviews of each of SunShot’s five subprogram areas, as well as a description of every active project in the SunShot’s project portfolio as of May 2014.

  18. Analysis of the Climate Change Technology Initiative

    Reports and Publications (EIA)

    1999-01-01

    Analysis of the impact of specific policies on the reduction of carbon emissions and their impact on U.S. energy use and prices in the 2008-2012 time frame. Also, analyzes the impact of the President's Climate Change Technology Initiative, as defined for the 2000 budget, on reducing carbon emissions from the levels forecast in the Annual Energy Outlook 1999 reference case.

  19. Initial borehole acoustic televiewer data processing algorithms

    SciTech Connect (OSTI)

    Moore, T.K.

    1988-06-01

    With the development of a new digital televiewer, several algorithms have been developed in support of off-line data processing. This report describes the initial set of utilities developed to support data handling as well as data display. Functional descriptions, implementation details, and instructions for use of the seven algorithms are provided. 5 refs., 33 figs., 1 tab.

  20. Arc initiation in cathodic arc plasma sources

    DOE Patents [OSTI]

    Anders, Andre (Albany, CA)

    2002-01-01

    A "triggerless" arc initiation method and apparatus is based on simply switching the arc supply voltage to the electrodes (anode and cathode). Neither a mechanical trigger electrode nor a high voltage flashover from a trigger electrode is required. A conducting path between the anode and cathode is provided, which allows a hot spot to form at a location where the path connects to the cathode. While the conductive path is eroded by the cathode spot action, plasma deposition ensures the ongoing repair of the conducting path. Arc initiation is achieved by simply applying the relatively low voltage of the arc power supply, e.g. 500 V-1 kV, with the insulator between the anode and cathode coated with a conducting layer and the current at the layer-cathode interface concentrated at one or a few contact points. The local power density at these contact points is sufficient for plasma production and thus arc initiation. A conductive surface layer, such as graphite or the material being deposited, is formed on the surface of the insulator which separates the cathode from the anode. The mechanism of plasma production (and arc initiation) is based on explosive destruction of the layer-cathode interface caused by joule heating. The current flow between the thin insulator coating and cathode occurs at only a few contact points so the current density is high.

  1. Nanostructure-initiator mass spectrometry biometrics

    DOE Patents [OSTI]

    Leclerc, Marion; Bowen, Benjamin; Northen, Trent

    2015-09-08

    Several embodiments described herein are drawn to methods of identifying an analyte on a subject's skin, methods of generating a fingerprint, methods of determining a physiological change in a subject, methods of diagnosing health status of a subject, and assay systems for detecting an analyte and generating a fingerprint, by nanostructure-initiator mass spectrometry (NIMS).

  2. Energy Transition Initiative: Islands Playbook (Book)

    SciTech Connect (OSTI)

    Not Available

    2015-01-01

    The Island Energy Playbook (the Playbook) provides an action-oriented guide to successfully initiating, planning, and completing a transition to an energy system that primarily relies on local resources to eliminate a dependence on one or two imported fuels. It is intended to serve as a readily available framework that any community can adapt to organize its own energy transition effort.

  3. WIPP Environmental Initiatives Earn DOE Recognition

    Broader source: Energy.gov [DOE]

    CARLSBAD, N.M., October 29, 2012 – The U.S. Department of Energy (DOE) recently recognized four initiatives at the Waste Isolation Pilot Plant (WIPP) and more than 20 people for improvements in energy, water and fleet efficiency while reducing pollution and waste across the DOE complex.

  4. Cooperative and non-cooperative conformational changes of F-actin induced by cofilin

    SciTech Connect (OSTI)

    Aihara, Tomoki; Oda, Toshiro

    2013-05-31

    Highlights: •Mobility of MTSL attached to C374 in F-actin became high upon addition of cofilin. •Change of motility of MTSL attached to C374 with cofilin-binding was cooperative. •Mobility of MTSL attached to V43C in F-actin became high upon addition of cofilin. •Change of motility of MTSL attached to V43C with cofilin-binding was linear. -- Abstract: Cofilin is an actin-binding protein that promotes F-actin depolymerization. It is well-known that cofilin-coated F-actin is more twisted than naked F-actin, and that the protomer is more tilted. However, the means by which the local changes induced by the binding of individual cofilin proteins proceed to the global conformational changes of the whole F-actin molecule remain unknown. Here we investigated the cofilin-induced changes in several parts of F-actin, through site-directed spin-label electron paramagnetic resonance spectroscopy analyses of recombinant actins containing single reactive cysteines. We found that the global, cooperative conformational changes induced by cofilin-binding, which were detected by the spin-label attached to the Cys374 residue, occurred without the detachment of the D-loop in subdomain 2 from the neighboring protomer. The two processes of local and global changes do not necessarily proceed in sequence.

  5. Rapid RNA-ligand interaction analysis through high-information content conformational and stability landscapes

    SciTech Connect (OSTI)

    Baird, Nathan J.; Inglese, James; Ferré-D?Amaré, Adrian R.

    2015-12-07

    The structure and biological properties of RNAs are a function of changing cellular conditions, but comprehensive, simultaneous investigation of the effect of multiple interacting environmental variables is not easily achieved. We have developed an efficient, high-throughput method to characterize RNA structure and thermodynamic stability as a function of multiplexed solution conditions using Förster resonance energy transfer (FRET). In a single FRET experiment using conventional quantitative PCR instrumentation, 19,400 conditions of MgCl2, ligand and temperature are analysed to generate detailed empirical conformational and stability landscapes of the cyclic diguanylate (c-di-GMP) riboswitch. This method allows rapid comparison of RNA structure modulation by cognate and non-cognate ligands. Landscape analysis reveals that kanamycin B stabilizes a non-native, idiosyncratic conformation of the riboswitch that inhibits c-di-GMP binding. Our research demonstrates that allosteric control of folding, rather than direct competition with cognate effectors, is a viable approach for pharmacologically targeting riboswitches and other structured RNA molecules.

  6. New sol-gel synthetic route to transition and main-group metal oxide aerogels using inorganic salt precursors

    SciTech Connect (OSTI)

    Gash, A E; Tillotson, T M; Satcher Jr, J H; Hrubesh, L W; Simpson, R L

    2000-09-12

    We have developed a new sol-gel route to synthesize several transition and main-group metal oxide aerogels. The approach is straightforward, inexpensive, versatile, and it produces monolithic microporous materials with high surface areas. Specifically, we report the use of epoxides as gelation agents for the sol-gel synthesis of chromia aerogels and xerogels from simple Cr(III) inorganic salts. The dependence of both gel formation and its rate was studied by varying the solvent used, the Cr(III) precursor salt, the epoxide/Cr(III) ratio, as well as the type of epoxide employed. All of these variables were shown to affect the rate of gel formation and provide a convenient control of this parameter. Dried chromia aerogels were characterized by high-resolution transmission electron microscopy (HRTEM) and nitrogen adsorption/desorption analyses, results of which will be presented. Our studies have shown that rigid monolithic gels can be prepared from many different metal ions salts, provided the formal oxidation state of the metal ion is greater than or equal to +3. Conversely, when di-valent transition metal salts are used precipitated solids are the products.

  7. Solid-gel precursor solutions and methods for the fabrication of polymetallicsiloxane coating films

    DOE Patents [OSTI]

    Toshifumi Sugama.

    1993-04-06

    Solutions and preparation methods necessary for the fabrication of metal oxide cross-linked polysiloxane coating films are disclosed. The films are useful in provide heat resistance against oxidation, wear resistance, thermal insulation, and corrosion resistance of substrates. The sol-gel precursor solution comprises a mixture of a monomeric organoalkoxysilane, a metal alkoxide M(OR)[sub n] (wherein M is Ti, Zr, Ge or Al; R is CH[sub 3], C[sub 2]H[sub 5] or C[sub 3]H[sub 7]; and n is 3 or 4), methanol, water, HCl and NaOH. The invention provides a sol-gel solution, and a method of use thereof, which can be applied and processed at low temperatures (i.e., < 1,000 C.). The substrate can be coated by immersing it in the above mentioned solution at ambient temperature. The substrate is then withdrawn from the solution. Next, the coated substrate is heated for a time sufficient and at a temperature sufficient to yield a solid coating. The coated substrate is then heated for a time sufficient, and temperature sufficient to produce a polymetallicsiloxane coating.

  8. Solid-gel precursor solutions and methods for the fabrication of polymetallicsiloxane coating films

    DOE Patents [OSTI]

    Sugama, Toshifumi (Mastic Beach, NY)

    1992-01-01

    Solutions and preparation methods necessary for the fabrication of metal oxide cross-linked polysiloxane coating films are disclosed. The films are useful in provide heat resistance against oxidation, wear resistance, thermal insulation, and corrosion resistance of substrates. The sol-gel precursor solution comprises a mixture of a monomeric organoalkoxysilane, a metal alkoxide M(OR).sub.n (wherein M is Ti, Zr, Ge or Al; R is CH.sub.3, C.sub.2 H.sub.5 or C.sub.3 H.sub.7 ; and n is 3 or 4), methanol, water, HCl and NaOH. The invention provides a sol-gel solution, and a method of use thereof, which can be applied and processed at low temperatures (i.e., <1000.degree. C.). The substrate can be coated by immersing it in the above mentioned solution at ambient temperature. The substrate is then withdrawn from the solution. Next, the coated substrate is heated for a time sufficient and at a temperature sufficient to yield a solid coating. The coated substrate is then heated for a time sufficient, and temperature sufficient to produce a polymetallicsiloxane coating.

  9. Solid-gel precursor solutions and methods for the fabrication of polymetallicsiloxane coating films

    DOE Patents [OSTI]

    Sugama, Toshifumi (Mastic Beach, NY)

    1993-01-01

    Solutions and preparation methods necessary for the fabrication of metal oxide cross-linked polysiloxane coating films are disclosed. The films are useful in provide heat resistance against oxidation, wear resistance, thermal insulation, and corrosion resistance of substrates. The sol-gel precursor solution comprises a mixture of a monomeric organoalkoxysilane, a metal alkoxide M(OR).sub.n (wherein M is Ti, Zr, Ge or Al; R is CH.sub.3, C.sub.2 H.sub.5 or C.sub.3 H.sub.7 ; and n is 3 or 4), methanol, water, HCl and NaOH. The invention provides a sol-gel solution, and a method of use thereof, which can be applied and processed at low temperatures (i.e., <1000.degree. C.). The substrate can be coated by immersing it in the above mentioned solution at ambient temperature. The substrate is then withdrawn from the solution. Next, the coated substrate is heated for a time sufficient and at a temperature sufficient to yield a solid coating. The coated substrate is then heated for a time sufficient, and temperature sufficient to produce a polymetallicsiloxane coating.

  10. Electrophoretically active sol-gel processes to backfill, seal, and/or densify porous, flawed, and/or cracked coatings on electrically conductive material

    DOE Patents [OSTI]

    Panitz, Janda K. (Sandia Park, NM); Reed, Scott T. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Neiser, Richard A. (Albuquerque, NM); Moffatt, William C. (Albuquerque, NM)

    1999-01-01

    Electrophoretically active sol-gel processes to fill, seal, and/or density porous, flawed, and/or cracked coatings on electrically conductive substrates. Such coatings may be dielectrics, ceramics, or semiconductors and, by the present invention, may have deposited onto and into them sol-gel ceramic precursor compounds which are subsequently converted to sol-gel ceramics to yield composite materials with various tailored properties.

  11. Electrophoretically active sol-gel processes to backfill, seal, and/or densify porous, flawed, and/or cracked coatings on electrically conductive material

    DOE Patents [OSTI]

    Panitz, J.K.; Reed, S.T.; Ashley, C.S.; Neiser, R.A.; Moffatt, W.C.

    1999-07-20

    Electrophoretically active sol-gel processes to fill, seal, and/or density porous, flawed, and/or cracked coatings on electrically conductive substrates. Such coatings may be dielectrics, ceramics, or semiconductors and, by the present invention, may have deposited onto and into them sol-gel ceramic precursor compounds which are subsequently converted to sol-gel ceramics to yield composite materials with various tailored properties. 6 figs.

  12. A methodology for analyzing precursors to earthquake-initiated and fire-initiated accident sequences

    SciTech Connect (OSTI)

    Budnitz, R.J.; Lambert, H.E.; Apostolakis, G. and others

    1998-04-01

    This report covers work to develop a methodology for analyzing precursors to both earthquake-initiated and fire-initiated accidents at commercial nuclear power plants. Currently, the U.S. Nuclear Regulatory Commission sponsors a large ongoing project, the Accident Sequence Precursor project, to analyze the safety significance of other types of accident precursors, such as those arising from internally-initiated transients and pipe breaks, but earthquakes and fires are not within the current scope. The results of this project are that: (1) an overall step-by-step methodology has been developed for precursors to both fire-initiated and seismic-initiated potential accidents; (2) some stylized case-study examples are provided to demonstrate how the fully-developed methodology works in practice, and (3) a generic seismic-fragility date base for equipment is provided for use in seismic-precursors analyses. 44 refs., 23 figs., 16 tabs.

  13. A model-free temperature-dependent conformational study of n-pentane in nematic liquid crystals

    SciTech Connect (OSTI)

    Burnell, E. Elliott; Weber, Adrian C. J.; Dong, Ronald Y.; Meerts, W. Leo; Lange, Cornelis A. de

    2015-01-14

    The proton NMR spectra of n-pentane orientationally ordered in two nematic liquid-crystal solvents are studied over a wide temperature range and analysed using covariance matrix adaptation evolutionary strategy. Since alkanes possess small electrostatic moments, their anisotropic intermolecular interactions are dominated by short-range size-and-shape effects. As we assumed for n-butane, the anisotropic energy parameters of each n-pentane conformer are taken to be proportional to those of ethane and propane, independent of temperature. The observed temperature dependence of the n-pentane dipolar couplings allows a model-free separation between conformer degrees of order and conformer probabilities, which cannot be achieved at a single temperature. In this way for n-pentane 13 anisotropic energy parameters (two for trans trans, tt, five for trans gauche, tg, and three for each of gauche{sub +} gauche{sub +}, pp, and gauche{sub +} gauche{sub ?}, pm), the isotropic trans-gauche energy difference E{sub tg} and its temperature coefficient E{sub tg}{sup ?} are obtained. The value obtained for the extra energy associated with the proximity of the two methyl groups in the gauche{sub +} gauche{sub ?} conformers (the pentane effect) is sensitive to minute details of other assumptions and is thus fixed in the calculations. Conformer populations are affected by the environment. In particular, anisotropic interactions increase the trans probability in the ordered phase.

  14. Initial Aging Studies of Unfilled VCE

    SciTech Connect (OSTI)

    Letant, S E; Herberg, J L; Wilson, T S; Alviso, C T; Chinn, S C; Maxwell, R S

    2008-10-09

    This report presents initial data on the effects of temperature, oxygen, and radiation on the chemical and structural properties of newly formulated, unfilled VCE. This initial effort focused on a pristine sample, and a replicate sample irradiated in air at a dose of 25MR. Thermal degradation was investigated by performing Thermogravimetric Analysis (TGA), and radiation-induced degradation was investigated using Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD), Solid Phase MicroExtraction--Gas Chromatography/Mass Spectrometry (SPME-GC/MS), as well as various Nuclear Magnetic Resonance (NMR) techniques including: {sup 13}C, {sup 13}C {sup 1}H cross polarization (CP), and {sup 1}H magic angle spinning (MAS) NMR.

  15. Sunshot Initiative High Penetration Solar Portal

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

    The DOE SunShot Initiative is a collaborative national initiative to make solar energy cost-competitive with other forms of energy by the end of the decade. Reducing the installed cost of solar energy systems by about 75% will drive widespread large-scale adoption of this renewable energy and restore U.S. leadership in the global clean energy race. The High Penetration Solar Portal was created as a resource to aggregate the most relevant and timely information related to high penetration solar scenarios and integrating solar into the grid. The site is designed so that utilities, grant awardees, regulators, researchers, and other solar professionals can easily share data, case studies, lessons learned, and demonstration project findings. [from https://solarhighpen.energy.gov/about_the_high_penetration_solar_portal

  16. Wind Powering America Initiative (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-01-01

    The U.S. Department of Energy's Wind Powering America initiative engages in technology market acceptance, barrier reduction, and technology deployment support activities. This fact sheet outlines ways in which the Wind Powering America team works to reduce barriers to appropriate wind energy deployment, primarily by focusing on six program areas: workforce development, communications and outreach, stakeholder analysis and resource assessment, wind technology technical support, wind power for Native Americans, and federal sector support and collaboration.

  17. Opening Remarks, Grid Integration Initiative Overview

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

    Lynn Grid Integration Initiative Hydrogen Energy Storage for Grid Integration and Transportation Services May 14, 2014 2 Other DOE? 2 The GTT is a DOE inter-office work group established in April 2011 by the Undersecretary of Energy to: - Coordinate and leverage DOE grid resources and activities - Identify pathways to enable grid modernization - Develop a long-term strategic vision of the U.S. electricity grid Value to the DOE * Holistic systems perspective * Align internal grid activities *

  18. SunShot Initiative | Department of Energy

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

    SunShot Initiative Solar Ready Vets Adds New Training Locations Solar Ready Vets Adds New Training Locations The Solar Ready Vets program announced new training locations and a look ahead in a blog post from Deputy Secretary Elizabeth Sherwood Randall. Read more Technology to Market Awards Announced Technology to Market Awards Announced The Energy Department today announced $22.7 million for 23 projects that will significantly reduce the costs for solar energy systems across a variety of

  19. Clean Energy Manufacturing Initiative Southeast Regional Summit

    Broader source: Energy.gov [DOE]

    As part of the Clean Energy Manufacturing Initiative (CEMI), the U.S. Department of Energy (DOE) organizes regional summits around the country to expand its partnerships, share resources and successes, and refine its strategy to boost U.S. competitiveness in clean energy manufacturing. The CEMI Southeast Regional Summit, which will be held on July 9, 2015 at the Renaissance Atlanta Midtown Hotel in Atlanta, Georgia, is the third in this series.

  20. Atmosphere to Electrons Initiative Takes Shape

    Broader source: Energy.gov [DOE]

    Since DOE launched its Atmosphere to Electrons (A2e) Initiative last July, the A2e executive committee has been developing a comprehensive approach for working with multiple stakeholders (industry, national laboratories, international experts, and universities) over the next 5- to 7 years. In February, they held an external merit review to lay the groundwork for an A2e multi-year strategic research plan.