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


1

A novel biomimetic approach to the design of high-performance  

E-Print Network [OSTI]

, ceramic­metal composites are ideal candi- dates. In particular, ceramic-matrix composites (CMCsA novel biomimetic approach to the design of high-performance ceramic­metal composites Maximilien E of extending natural biological design to develop new synthetic ceramic­ metal composite materials is examined

Ritchie, Robert

2

A Miniature Biomimetic Robotic Fish and Its Realtime Path Planning  

E-Print Network [OSTI]

A Miniature Biomimetic Robotic Fish and Its Realtime Path Planning Chao Zhou, Zhiqiang Cao, Shuo a novel miniature biomimetic robotic fish based on single link with compact structure, high maneuverability and multiple sensors. The robotic fish mimics the motion of Thunniform mode, and the methods

Boyer, Edmond

3

S09 Symposium KK, Structure-Property Relationships in Biomineralized and Biomimetic Composites  

SciTech Connect (OSTI)

The technical presentations and discussions at this symposium disseminated and assessed current research and defined future directions in biomaterials research, with a focus on structure-function relationships in biological and biomimetic composites. The invited and contributed talks covered a diverse range of topics from fundamental biology, physics, chemistry, and materials science to potential applications in developing areas such as light-weight composites, multifunctional and smart materials, biomedical engineering, and nanoscaled sensors. The invited speakers were chosen to create a stimulating program with a mixture of established and junior faculty, industrial and academic researchers, and American and international experts in the field. This symposium served as an excellent introduction to the area for younger scientists (graduate students and post-doctoral researchers). Direct interactions between participants also helped to promote potential future collaborations involving multiple disciplines and institutions.

David Kisailus; Lara Estroff; Himadri S. Gupta; William J. Landis; Pablo D. Zavattieri

2010-06-07T23:59:59.000Z

4

Biomimetic self-assembly of a functional asymmetrical electronic device  

E-Print Network [OSTI]

Biomimetic self-assembly of a functional asymmetrical electronic device Mila Boncheva, David H a biomimetic strategy for the fabrication of asymmetrical, three-dimensional electronic devices modeled distinct microelectronic elements into a multidomain electronic device with asymmet- rical structure

Prentiss, Mara

5

Borrowing from Nature to Produce Highly Structured Biomimetic...  

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

with both precision and accuracy. Chemists and materials scientists would dearly like to lift a few pages out of nature's instruction manual and use their wisdom to construct...

6

Borrowing from Nature to Produce Highly Structured Biomimetic Materials  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M.Extracellular PolysaccharidesTalks

7

Borrowing from Nature to Produce Highly Structured Biomimetic Materials  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M.Extracellular PolysaccharidesTalksBorrowing from Nature to

8

Borrowing from Nature to Produce Highly Structured Biomimetic Materials  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply forBiosurveillance A8^BorderHomelandBorrowing

9

Borrowing from Nature to Produce Highly Structured Biomimetic Materials  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply forBiosurveillance

10

Borrowing from Nature to Produce Highly Structured Biomimetic Materials  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply forBiosurveillanceBorrowing from Nature to

11

Borrowing from Nature to Produce Highly Structured Biomimetic Materials  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply forBiosurveillanceBorrowing from Nature

12

Borrowing from Nature to Produce Highly Structured Biomimetic Materials  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply forBiosurveillanceBorrowing from NatureBorrowing

13

Borrowing from Nature to Produce Highly Structured Biomimetic Materials  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply forBiosurveillanceBorrowing from

14

Analysis of biomimetics in the application of robotic locomotion with a focus on structures, materials and dynamics  

E-Print Network [OSTI]

Biomimetics is the study and analysis of natural systems to inform engineering design and technology development. Through interdisciplinary research and analysis of natural phenomena, engineers are able to gain valuable ...

Miller, Ari Parsons

2011-01-01T23:59:59.000Z

15

Biomimetic thin film deposition  

SciTech Connect (OSTI)

Biological mineral deposition for the formation of bone, mollusk shell and other hard tissues provides materials scientists with illustrative materials processing strategies. This presentation will review the key features of biomineralization and how these features can be of technical importance. We have adapted existing knowledge of biomineralization to develop a unique method of depositing inorganic thin films and coating. Our approach to thin film deposition is to modify substrate surfaces to imitate the proteins found in nature that are responsible for controlling mineral deposition. These biomimetic surfaces control the nucleation and growth of the mineral from a supersaturated aqueous solution. This has many processing advantages including simple processing equipment, environmentally benign reagents, uniform coating of highly complex shapes, and enhanced adherence of coating. Many different types of metal oxide, hydroxide, sulfide and phosphate materials with useful mechanical, optical, electronic and biomedical properties can be deposited.

Rieke, P.R.; Graff, G.E.; Campbell, A.A.; Bunker, B.C.; Baskaran, S.; Song, L.; Tarasevich, B.J.; Fryxell, G.E.

1995-09-01T23:59:59.000Z

16

Biomimetic interfacial interpenetrating polymer networks control neural stem cell behavior  

E-Print Network [OSTI]

Biomimetic interfacial interpenetrating polymer networks control neural stem cell behavior Krishanu polymer network (IPN), we define a robust synthetic and highly-defined plat- form for the culture of adult precisely orchestrate signal presentation to stem cells. Using a biomimetic interfacial interpenetrating

Saha, Krishanu

17

A novel biomimetic approach to the design of high-performance ceramic/metal composites  

SciTech Connect (OSTI)

The prospect of extending natural biological design to develop new synthetic ceramic-metal composite materials is examined. Using ice-templating of ceramic suspensions and subsequent metal infiltration, we demonstrate that the concept of ordered hierarchical design can be applied to create fine-scale laminated ceramic-metal (bulk) composites that are inexpensive, lightweight and display exceptional damage-tolerance properties. Specifically, Al{sub 2}O{sub 3}/Al-Si laminates with ceramic contents up to approximately 40 vol% and with lamellae thicknesses down to 10 {micro}m were processed and characterized. These structures achieve an excellent fracture toughness of 40 MPa{radical}m at a tensile strength of approximately 300 MPa. Salient toughening mechanisms are described together with further toughening strategies.

Launey, Maximilien E.; Munch, Etienne; Alsem, Daan Hein; Saiz, Eduardo; Tomsia, Antoni P.; Ritchie, Robert O.

2009-08-01T23:59:59.000Z

18

Biomimetic hydrogel materials  

DOE Patents [OSTI]

Novel biomimetic hydrogel materials and methods for their preparation. Hydrogels containing acrylamide-functionalized carbohydrate, sulfoxide, sulfide or sulfone copolymerized with a hydrophilic or hydrophobic copolymerizing material selected from the group consisting of an acrylamide, methacrylamide, acrylate, methacrylate, vinyl and a derivative thereof present in concentration from about 1 to about 99 wt %. and methods for their preparation. The method of use of the new hydrogels for fabrication of soft contact lenses and biomedical implants.

Bertozzi, Carolyn (Albany, CA); Mukkamala, Ravindranath (Houston, TX); Chen, Qing (Albany, CA); Hu, Hopin (Albuquerque, NM); Baude, Dominique (Creteil, FR)

2000-01-01T23:59:59.000Z

19

Biomimetic Hydrogel Materials  

DOE Patents [OSTI]

Novel biomimetic hydrogel materials and methods for their preparation. Hydrogels containing acrylamide-functionalized carbohydrate, sulfoxide, sulfide or sulfone copolymerized with a hydrophilic or hydrophobic copolymerizing material selected from the group consisting of an acrylamide, methacrylamide, acrylate, methacrylate, vinyl and a derivative thereof present in concentration from about 1 to about 99 wt %. and methods for their preparation. The method of use of the new hydrogels for fabrication of soft contact lenses and biomedical implants.

Bertozzi, Carolyn (Albany, CA), Mukkamala, Ravindranath (Houston, TX), Chen, Oing (Albany, CA), Hu, Hopin (Albuquerque, NM), Baude, Dominique (Creteil, FR)

2003-04-22T23:59:59.000Z

20

Biomimetic self-assembly of helical electrical circuits using orthogonal capillary interactions  

E-Print Network [OSTI]

Biomimetic self-assembly of helical electrical circuits using orthogonal capillary interactions for publication 17 February 2002 This letter describes the biomimetic self-assembly of mm-sized polyhedra. The design of the self-assembly process, and of the resulting structures, was modeled on the formation

Prentiss, Mara

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


21

Metalloproteins: Structure Determination (HADH), Inhibition (P4H), and Biomimetic Systems (P-1[Ru(NO)(Cl)])  

E-Print Network [OSTI]

Histamine dehydrogenase from Nocardioides simplex (HADH) is a flavoprotein that converts histamine to imidazole acetaldehyde and is highly specific for histamine. Chapter one describes the development of overexpression and ...

Reed, Timothy M.

2008-01-01T23:59:59.000Z

22

Sensing bending in a compliant biomimetic fish  

E-Print Network [OSTI]

This thesis examines the problem of sensing motion in a compliant biomimetic device. Specifically, it will examine the motion of a tail in a biomimetic fish. To date, the fish has been an open-loop system, the motion of ...

Kaczmarek, Adam S

2006-01-01T23:59:59.000Z

23

Center for Nanostructured Biomimetic Interfaces Integrated Electrochemical and Optical Methods for Studying TRPV Channel Proteins  

E-Print Network [OSTI]

Center for Nanostructured Biomimetic Interfaces Integrated Electrochemical and Optical Methods Ofoli, Ilsoon Lee, Mark Worden and Donna Wang* Department of Chemical Engineering and Materials Science: Structural Biology of Membrane Proteins ·Measure protein activity in lipid bilayer -Electrochemical methods

24

High temperature structural insulating material  

DOE Patents [OSTI]

A high temperature structural insulating material useful as a liner for cylinders of high temperature engines through the favorable combination of high service temperature (above about 800/sup 0/C), low thermal conductivity (below about 0.2 W/m/sup 0/C), and high compressive strength (above about 250 psi). The insulating material is produced by selecting hollow ceramic beads with a softening temperature above about 800/sup 0/C, a diameter within the range of 20-200 ..mu..m, and a wall thickness in the range of about 2 to 4 ..mu..m; compacting the beads and a compatible silicate binder composition under pressure and sintering conditions to provide the desired structural form with the structure having a closed-cell, compact array of bonded beads.

Chen, W.Y.

1984-07-27T23:59:59.000Z

25

High temperature structural insulating material  

DOE Patents [OSTI]

A high temperature structural insulating material useful as a liner for cylinders of high temperature engines through the favorable combination of high service temperature (above about 800.degree. C.), low thermal conductivity (below about 0.2 W/m.degree. C.), and high compressive strength (above about 250 psi). The insulating material is produced by selecting hollow ceramic beads with a softening temperature above about 800.degree. C., a diameter within the range of 20-200 .mu.m, and a wall thickness in the range of about 2-4 .mu.m; compacting the beads and a compatible silicate binder composition under pressure and sintering conditions to provide the desired structural form with the structure having a closed-cell, compact array of bonded beads.

Chen, Wayne Y. (Munster, IN)

1987-01-01T23:59:59.000Z

26

High temperature turbine engine structure  

DOE Patents [OSTI]

A high temperature turbine engine includes a rotor portion having axially stacked adjacent ceramic rotor parts. A ceramic/ceramic joint structure transmits torque between the rotor parts while maintaining coaxial alignment and axially spaced mutually parallel relation thereof despite thermal and centrifugal cycling.

Boyd, Gary L. (Tempe, AZ)

1991-01-01T23:59:59.000Z

27

Crump Geyser: High Precision Geophysics & Detailed Structural...  

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

Crump Geyser: High Precision Geophysics & Detailed Structural Exploration & Slim Well Drilling Crump Geyser: High Precision Geophysics & Detailed Structural Exploration & Slim Well...

28

Biomimetic Interfaces for a Multifunctional Biosensor Array Microsystem  

E-Print Network [OSTI]

Biomimetic Interfaces for a Multifunctional Biosensor Array Microsystem Brian Hassler, R. Mark, biomimetic interfaces, lipid bilayer, electrochemical sensor, dehydrogenase, membrane protein. INTRODUCTION other areas of chemical and biological research. Protein-based electrochemical biosensors are ideally

Mason, Andrew

29

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien,Biological Imaging byBiomimetic DyeBiomimetic Dye

30

IEEE Sensors Conf., Oct. 2004Center for Nanostructured Biomimetic Interfaces Biomimetic Interfaces for a Multifunctional  

E-Print Network [OSTI]

for a Multifunctional Biosensor Array Microsystem Brian Hassler, R. Mark Worden, Andrew Mason+, Peter Kim+, Neeraj Kohli · electrochemical · impedance spectroscopy #12;IEEE Sensors Conf., Oct. 2004Center for Nanostructured Biomimetic

31

Biomimetic growth of strontium oxalate aggregates with unusual morphologies in the presence of poly(methacrylic acid)  

E-Print Network [OSTI]

Paper Biomimetic growth of strontium oxalate aggregates with unusual morphologies in the presence-like strontium oxalate dihydrate (SOD) crystals. The formation of the unusual aggregated structures showed fractal structures.20 In the present work, we investigated the crystallization of strontium

Qi, Limin

32

Crump Geyser: High Precision Geophysics & Detailed Structural...  

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

Crump Geyser: High Precision Geophysics & Detailed Structural Exploration & Slim Well Drilling John Casteel Nevada Geothermal Power Co. Validation of Innovative Exploration...

33

Conformal coating of highly structured surfaces  

DOE Patents [OSTI]

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.

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

2012-12-11T23:59:59.000Z

34

apatite biomimetically grown: Topics by E-print Network  

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

phosphate cement Tas, A. Cuneyt 8 Biomimetic nanopores: learning from and about nature Materials Science Websites Summary: . A related approach - similar but different to...

35

Making biomimetic complexes to produce hydrogen fuel | Center...  

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

biomimetic complexes to produce hydrogen fuel 4 Nov 2012 Souvik Roy, graduate student (Subtask 3, laboratory of Anne Jones). "I am involved mostly in mimicking Fe-hydrogenases,...

36

High temperature turbine engine structure  

DOE Patents [OSTI]

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1993-01-01T23:59:59.000Z

37

High temperature turbine engine structure  

DOE Patents [OSTI]

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1992-01-01T23:59:59.000Z

38

High temperature turbine engine structure  

DOE Patents [OSTI]

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1994-01-01T23:59:59.000Z

39

Passive Sensing and Active Sensing of A Biomimetic Whisker DaeEun Kim1 and Ralf Moller2  

E-Print Network [OSTI]

the whisker carrying a permanent magnet is surrounded by mag- netic sensors, and these sensors can measure reported that a biomimetic whisker with steel shaft and magnetic sensors can measure the vibration. In the biological whisker sys- tem, mechanoreceptors surrounding the whisker shaft in the follicle structure measure

Moeller, Ralf

40

Solid state NMR method development and studies of biological and biomimetic nanocomposites  

SciTech Connect (OSTI)

This thesis describes application and development of advanced solid-state nuclear magnetic resonance techniques for complex materials, in particular organic-inorganic nanocomposites and thermoelectric tellurides. The apatite-collagen interface, essential for understanding the biomineralization process in bone and engineering the interface for controlled bio-mimetic synthesis and optimized mechanical properties, is buried within the nanocomposite of bone. We used multinuclear solid-state NMR to study the composition and structure of the interface. Citrate has been identified as the main organic molecule strongly bound to the apatite surface with a density of 1/(2 nm){sup 2}, covering 1/6 of the total surface area in bovine bone. Citrate provides more carboxylate groups, one of the key functional groups found to affect apatite nucleation and growth, than all the non-collagenous proteins all together in bone; thus we propose that citrate stabilizes apatite crystals at a very small thickness of {approx}3 nm (4 unit cells) to increase bone fracture tolerance. The hypothesis has been confirmed in vitro by adding citrate in the bio-mimetic synthesis of polymerhydroxyapatite nanocomposites. The results have shown that the size of hydroxyapatite nanocrystals decreases as increasing citrate concentration. With citrate concentrations comparable to that in body fluids, similar-sized nanocrystals as in bone have been produced. Besides the dimensions of the apatite crystals, the composition of bone also affects its biofunctional and macroscopic mechanical properties; therefore, our team also extended its effort to enhance the inorganic portion in our bio-mimetic synthesis from originally 15 wt% to current 50 wt% compared to 65 wt% in bovine bone, by using Lysine-Leucine hydroxyapatite nucleating diblock co-polypeptide, which forms a gel at very low concentration. In this thesis, various advanced solid state NMR techniques have been employed to characterize nanocomposites. Meanwhile, we have developed new methods to achieve broadband high resolution NMR and improve the accuracy of inter-nuclear distance measurements involving quadrupolar spins. Broadband high resolution NMR of spin-1/2 nuclei has been accomplished by the adaptation of the magic angle turning (MAT) method to fast magic angle spinning, termed fast MAT, by solving technical problems such as off resonance effects. Fast MAT separates chemical shift anisotropy and isotropic chemical shifts over a spectral range of {approx}1.8 {gamma}B{sub 1} without significant distortions. Fast MAT {sup 125}Te NMR has been applied to study technologically important telluride materials with spectra spreading up to 190 kHz. The signal-to-noise ratio of the spectra is significantly improved by using echo-matched Gaussian filtering in offline data processing. The accuracy of the measured distances between spin-1/2 and quadrupolar nuclei with methods such as SPIDER and REAPDOR has been improved by compensating for the fast longitudinal quadrupolar relaxation on the sub-millisecond with a modified S{sub 0} pulse sequence. Also, the T1Q effect on the spin coherence and its spinning speed dependency has been explored and documented with analytical and numerical simulations as well as experimental measurements.

Hu, Yanyan

2011-02-07T23:59:59.000Z

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


41

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien,Biological Imaging byBiomimetic Dye Molecules for

42

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien,Biological Imaging byBiomimetic Dye Molecules

43

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien,Biological Imaging byBiomimetic Dye

44

Nuclear diffractive structure functions at high energies  

E-Print Network [OSTI]

A future high-energy electron-ion collider would explore the non-linear weakly-coupled regime of QCD, and test the Color Glass Condensate (CGC) approach to high-energy scattering. Hard diffraction in deep inelastic scattering off nuclei will provide many fundamental measurements. In this work, the nuclear diffractive structure function F_{2,A}^D is predicted in the CGC framework, and the features of nuclear enhancement and suppression are discussed.

C. Marquet; H. Kowalski; T. Lappi; R. Venugopalan

2008-05-30T23:59:59.000Z

45

Surface and Structural Stabilities of Carbon Additives in High...  

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

Structural Stabilities of Carbon Additives in High Voltage Lithium Ion Batteries. Surface and Structural Stabilities of Carbon Additives in High Voltage Lithium Ion Batteries....

46

Analysis of Rotational Structure in the High-Resolution Infrared...  

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

Rotational Structure in the High-Resolution Infrared Spectrum and Assignment of Vibrational Fundamentals of Analysis of Rotational Structure in the High-Resolution Infrared...

47

Development of a shape memory alloy actuated biomimetic hydrofoil  

E-Print Network [OSTI]

mimicking aquatic animals with controlled oscillation frequencies of up to 1 Hz, with 1/2 Hz oscillation producing the largest useful amplitudes. Measurable force was generated when the biomimetic hydrofoil was defected underwater. The magnitude of the force...

Wilson, Larry Nixon

2000-01-01T23:59:59.000Z

48

Solution Self-Assembly of Sequence Specific Biomimetic Polymers  

E-Print Network [OSTI]

J. D. , In vitro self- assembly from a simple protein ofR. N. , Hierarchical Self-Assembly of a Biomimetic DiblockC. R. , Hierarchical self-assembly of F-actin and cationic

Murnen, Hannah

2012-01-01T23:59:59.000Z

49

Biomimetic model for [FeFe]-hydrogenase: Asymmetrically disubstituted  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien,Biological Imaging byBiomimetic DyeBiomimetic

50

Thermal stability of high temperature structural alloys  

SciTech Connect (OSTI)

High temperature structural alloys were evaluated for suitability for long term operation at elevated temperatures. The effect of elevated temperature exposure on the microstructure and mechanical properties of a number of alloys was characterized. Fe-based alloys (330 stainless steel, 800H, and mechanically alloyed MA 956), and Ni-based alloys (Hastelloy X, Haynes 230, Alloy 718, and mechanically alloyed MA 758) were evaluated for room temperature tensile and impact toughness properties after exposure at 750 C for 10,000 hours. Of the Fe-based alloys evaluated, 330 stainless steel and 800H showed secondary carbide (M{sub 23}C{sub 6}) precipitation and a corresponding reduction in ductility and toughness as compared to the as-received condition. Within the group of Ni-based alloys tested, Alloy 718 showed the most dramatic structure change as it formed delta phase during 10,000 hours of exposure at 750 C with significant reductions in strength, ductility, and toughness. Haynes 230 and Hastelloy X showed significant M{sub 23}C{sub 6} carbide precipitation and a resulting reduction in ductility and toughness. Haynes 230 was also evaluated after 10,000 hours of exposure at 850, 950, and 1050 C. For the 750--950 C exposures the M{sub 23}C{sub 6} carbides in Haynes 230 coarsened. This resulted in large reductions in impact strength and ductility for the 750, 850 and 950 C specimens. The 1050 C exposure specimens showed the resolution of M{sub 23}C{sub 6} secondary carbides, and mechanical properties similar to the as-received solution annealed condition.

Jordan, C.E.; Rasefske, R.K.; Castagna, A. [Lockheed Martin Corp., Schenectady, NY (United States)

1999-03-01T23:59:59.000Z

51

Effect of high pressure on structural oddities   

E-Print Network [OSTI]

This thesis describes the effect of pressure on crystal structures that are in some way unusual. The aim was to investigate whether pressure could be used to force these ‘structural oddities’ to conform to more conventional ...

Johnstone, Russell D. L.

2010-01-01T23:59:59.000Z

52

Biomimetic ratcheting motion of a soft, slender, sessile gel  

E-Print Network [OSTI]

Biomimetic ratcheting motion of a soft, slender, sessile gel L. Mahadevan* , S. Daniel , and M. K, just as in a mechanical ratchet. Worms use a combination of unidirectional waves and the inequality­heal cycle in response to periodic unidirectional pulses producing a material ratchet (1, 4); snakes use

Chaudhury, Manoj K.

53

Scleral Reinforcement Through Host Tissue Integration with Biomimetic Enzymatically Degradable  

E-Print Network [OSTI]

. Wildsoet, O.D., Ph.D.1 Enzymatically degradable semi-interpenetrating polymer networks (edsIPNs) were Polymer Network James Su, M.Eng.,1 Samuel T. Wall, Ph.D.,2 Kevin E. Healy, Ph.D.,2,3 and Christine FScleral Reinforcement Through Host Tissue Integration with Biomimetic Enzymatically Degradable Semi-Interpenetrating

Healy, Kevin Edward

54

Robotics and Autonomous Systems 30 (2000) 133153 Biomimetic robot navigation  

E-Print Network [OSTI]

Robotics and Autonomous Systems 30 (2000) 133­153 Biomimetic robot navigation Matthias O. Franz Abstract In the past decade, a large number of robots has been built that explicitly implement biological applications, most notably in the field of indoor robot navigation. While simpler insect navigation behaviours

55

Supporting Creative Concept Generation by Engineering Students with Biomimetic Design  

E-Print Network [OSTI]

Supporting Creative Concept Generation by Engineering Students with Biomimetic Design Hyunmin the analogical transfer tools we developed affected engineering students in generating creative concepts. We of Mechanical and Industrial Engineering, University of Toronto 5 King's College Road, Toronto, ON, M5S 3G8

Shu, Lily H.

56

BIOMIMETIC PROCESSING OF CERAMICS AND CERAMIC-METAL COMPOSITES  

E-Print Network [OSTI]

625 BIOMIMETIC PROCESSING OF CERAMICS AND CERAMIC-METAL COMPOSITES M. YASREBI, G. H. KIM, K. E of composite materials has become popular and frequently necessary to meet the requirements of technology. The employment of composites is well appreciated firom the fact that unique arrangements of constituent materials

Aksay, Ilhan A.

57

High School Co-op Program Salary Structure  

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

Salary Structure High School Co-op Program Salary Structure Point your career towards Los Alamos Lab: work with the best minds on the planet in an inclusive environment that is...

58

Reflection High-Energy Electron Diffraction Beam-Induced Structural...  

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

Beam-Induced Structural and Property Changes on WO3 Thin Films. Reflection High-Energy Electron Diffraction Beam-Induced Structural and Property Changes on WO3 Thin...

59

On-clip high frequency reliability and failure test structures  

DOE Patents [OSTI]

Self-stressing test structures for realistic high frequency reliability characterizations. An on-chip high frequency oscillator, controlled by DC signals from off-chip, provides a range of high frequency pulses to test structures. The test structures provide information with regard to a variety of reliability failure mechanisms, including hot-carriers, electromigration, and oxide breakdown. The system is normally integrated at the wafer level to predict the failure mechanisms of the production integrated circuits on the same wafer. 22 figs.

Snyder, E.S.; Campbell, D.V.

1997-04-29T23:59:59.000Z

60

On-clip high frequency reliability and failure test structures  

DOE Patents [OSTI]

Self-stressing test structures for realistic high frequency reliability characterizations. An on-chip high frequency oscillator, controlled by DC signals from off-chip, provides a range of high frequency pulses to test structures. The test structures provide information with regard to a variety of reliability failure mechanisms, including hot-carriers, electromigration, and oxide breakdown. The system is normally integrated at the wafer level to predict the failure mechanisms of the production integrated circuits on the same wafer.

Snyder, Eric S. (Albuquerque, NM); Campbell, David V. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

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


61

Ablation Casting Evaluation for High Volume Structural Castings...  

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

Casting Evaluation for High Volume Structural Castings 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

62

Structural Optimization of High Voltage Transmission Line Towers considering  

E-Print Network [OSTI]

Structural Optimization of High Voltage Transmission Line Towers considering Continuum and Discrete/or to common designs largely repeated (e.g. automotive compo- nents), and high voltage transmission towers can than conventional designs of high voltage transmission line towers. The optimization model proposed

Colominas, Ignasi

63

Biomimetic synthesis of modified calcium phosphate fine powders and their in vitro studies  

SciTech Connect (OSTI)

Biomimetic approach and subsequent high-temperature treatment were used to synthesize ion modified calcium phosphate fine powders. Thus, using Simulated Body Fluid (SBF) as an ion modifier, a bi-phase mixture of ion modified ?-tricalcium phosphate and hydroxyapatite (?-TCP + HA) was prepared. The use of SBF electrolyte solution enriched with Mg{sup 2+} or Zn{sup 2+} yielded monophase ?-tricalcium phosphate additionally modified with Mg{sup 2+} or Zn{sup 2+} (Mg-?-TCP or Zn-?-TCP). The in vitro behavior of the prepared powders on cell viability and proliferation of murine BALB/c 3T3 fibroblasts and of human Lep 3 cells was studied by MTT test assays and Mosmann method after 72 h incubation. The relative cell viability was calculated.

Gergulova, R., E-mail: rumigg@yahoo.com; Tepavitcharova, S., E-mail: rumigg@yahoo.com; Rabadjieva, D., E-mail: rumigg@yahoo.com; Sezanova, K., E-mail: rumigg@yahoo.com; Ilieva, R., E-mail: rumigg@yahoo.com [Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 11, 1113 Sofia (Bulgaria); Alexandrova, R.; Andonova-Lilova, B. [Institute of Experimental Morphology, Pathology and Anthropology with Museum, BAS, Acad. G. Bonchev Str., Bl. 25, Sofia (Bulgaria)

2013-12-16T23:59:59.000Z

64

Biological and Biomimetic Low-Temperature Routes to Materials...  

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

Review and Peer Evaluation Meeting es047morse2012p.pdf More Documents & Publications Nano-scale Composite Hetero-structures: Novel High Capacity Reversible Anodes for...

65

Biomimetic electrical stimulation for cardiac tissue engineering  

E-Print Network [OSTI]

A major challenge of tissue engineering is directing cells to establish the physiological structure and function of the tissue being replaced. Electrical stimulation has been used to induce synchronous contractions of ...

Tandon, Nina

2006-01-01T23:59:59.000Z

66

Biomimetic approach to cardiac tissue engineering  

E-Print Network [OSTI]

(cont.) biochemical and morphological properties in the pretreated group. Finally, in order to mimic capillary structure cardiac fibroblasts and myocytes were co-cultured on a scaffold with a parallel channel array that ...

Radisic, Milica

2004-01-01T23:59:59.000Z

67

Characterization and modeling of a shape memory allow actuated biomimetic vehicle  

E-Print Network [OSTI]

The development of a biomimetic active hydrofoil that utilizes Shape Memory Alloy (SMA) actuator technology is presented herein. This work is the first stage prototype of a vehicle that will consist of many actuated body segments. The current work...

Garner, Luke Jay

1999-01-01T23:59:59.000Z

68

Design of a biomimetic pectoral fin joint in an artificial fish  

E-Print Network [OSTI]

A biomimetic design of the muscle joint in a pectoral fish fin was produced based on comparisons with four design models. All four design models consisted of a mechanical joint connection and incorporated the functional ...

Peña, Vanessa, 1982-

2004-01-01T23:59:59.000Z

69

Formation of Biomimetic Porous Calcium Phosphate Coatings on Surfaces of Polyethylene/Zinc Stearate Blends  

E-Print Network [OSTI]

Formation of Biomimetic Porous Calcium Phosphate Coatings on Surfaces of Polyethylene/Zinc Stearate phosphate coating, polyethylene Abstract Studies were undertaken investigating improvements presented in this paper concentrated on adding zinc stearate to polyethylene. Important potential benefits

Drelich, Jaroslaw W.

70

Biomimetic oscillating foil propulsion to enhance underwater vehicle agility and maneuverability  

E-Print Network [OSTI]

Inspired by the swimming abilities of marine animals, this thesis presents "Finnegan the RoboTurtle", an autonomous underwater vehicle (AUV) powered entirely by four flapping foils. Biomimetic actuation is shown to produce ...

Licht, Stephen Carl

2008-01-01T23:59:59.000Z

71

Studies toward biomimetic claisen condensation using nucleic acid templates and ribozyme catalysis  

E-Print Network [OSTI]

Many different experimental approaches were attempted to achieve carbon-carbon bond formation by nucleic acid template-directed reactions and ribozyme catalysis as potential lipid synthesizing machineries in the RNA world. A novel biomimetic...

Ryu, Youngha

2005-08-29T23:59:59.000Z

72

Open loop performance of a biomimetic flapping foil autonomous underwater vehicle  

E-Print Network [OSTI]

Flapping foil propulsion is emerging as an alternative to conventional propulsion for underwater vehicles. MIT's Biomimetic Flapping Foil Autonomous Underwater Vehicle is a prototype vehicle that uses four three-dimensional ...

Wolf, Malima Isabelle, 1981-

2006-01-01T23:59:59.000Z

73

A SIMPLIFIED ANALYSIS FOR HIGH POWER MICROWAVE BANDPASS FILTER STRUCTURES  

E-Print Network [OSTI]

and wireless diplexers. An exact analysis of the voltage/power distribution inside a filter involves the 3D is derived. This transformation is then used to relate the actual voltage distribution inside a transmissionA SIMPLIFIED ANALYSIS FOR HIGH POWER MICROWAVE BANDPASS FILTER STRUCTURES Apu Sivadas, Ming Yu

Yu, Ming

74

Gravi++: Interactive Information Visualization of Highly Structured Temporal Data  

E-Print Network [OSTI]

tasks or computer tomography visualizations. In the field of medical treatment planning different kindsGravi++: Interactive Information Visualization of Highly Structured Temporal Data Klaus Hinum1, Vienna University of Technology Vienna, Austria, http://ieg.ifs.tuwien.ac.at/projects/in2vis/ Abstract

75

Dielectric-Lined High-Gradient Accelerator Structure  

SciTech Connect (OSTI)

Rectangular particle accelerator structures with internal planar dielectric elements have been studied, with a view towards devising structures with lower surface fields for a given accelerating field, as compared with structures without dielectrics. Success with this concept is expected to allow operation at higher accelerating gradients than otherwise on account of reduced breakdown probabilities. The project involves studies of RF breakdown on amorphous dielectrics in test cavities that could enable high-gradient structures to be built for a future multi-TeV collider. The aim is to determine what the limits are for RF fields at the surfaces of selected dielectrics, and the resulting acceleration gradient that could be achieved in a working structure. The dielectric of principal interest in this study is artificial CVD diamond, on account of its advertised high breakdown field ({approx}2 GV/m for dc), low loss tangent, and high thermal conductivity. Experimental studies at mm-wavelengths on materials and structures for achieving high acceleration gradient were based on the availability of the 34.3 GHz third-harmonic magnicon amplifier developed by Omega-P, and installed at the Yale University Beam Physics Laboratory. Peak power from the magnicon was measured to be about 20 MW in 0.5 {micro}s pulses, with a gain of 54 dB. Experiments for studying RF high-field effects on CVD diamond samples failed to show any evidence after more than 10{sup 5} RF pulses of RF breakdown up to a tangential surface field strength of 153 MV/m; studies at higher fields were not possible due to a degradation in magnicon performance. A rebuild of the tube is underway at this writing. Computed performance for a dielectric-loaded rectangular accelerator structure (DLA) shows highly competitive properties, as compared with an existing all-metal structure. For example, comparisons were made of a DLA structure having two planar CVD diamond elements with a all-metal CERN structure HDS operating at 30 GHz. It was shown that the ratio of maximum surface electric field to accelerating field at the metal wall is only 0.35-0.4 for DLA, much smaller than the value 2.2 for HDS; and the ratio of surface magnetic field to accelerating field is 3.0 mA/V for DLA, compared with 3.45 mA/V for HDS. These values bode well for DLA in helping to avoid breakdown and to reducing pulsed surface heating and fatigue. The shunt impedance is found to be 160-175 M{Omega}/m for DLA, as compared to 99 M{Omega}/m for HDS. Conclusions are reached from this project that CVD diamond appears promising as a dielectric with a high threshold for RF breakdown, and that rectangular accelerator structures can be devised using planar CVD diamond elements that could be operated at higher acceleration gradients with low probability of RF breakdown, as compared with corresponding all-metallic structures.

Jay L. Hirshfield

2012-04-24T23:59:59.000Z

76

Nano-scale Composite Hetero-structures: Novel High Capacity Reversible...  

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

Nano-scale Composite Hetero-structures: Novel High Capacity Reversible Anodes for Lithium-ion Batteries Nano-scale Composite Hetero-structures: Novel High Capacity Reversible...

77

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor is fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a ``notepad`` configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The notepad capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density. 5 figs.

Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

1995-05-09T23:59:59.000Z

78

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a "notepad" configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The "notepad" capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density.

Barbee, Jr., Troy W. (Palo Alto, CA); Johnson, Gary W. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

1995-01-01T23:59:59.000Z

79

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor is described which is fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a ``notepad`` configuration composed of 200--300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The ``notepad`` capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density. 5 figs.

Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

1996-01-23T23:59:59.000Z

80

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a "notepad" configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The "notepad" capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density.

Barbee, Jr., Troy W. (Palo Alto, CA); Johnson, Gary W. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

1996-01-01T23:59:59.000Z

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


81

Conversion of methane to higher hydrocarbons (Biomimetic catalysis of the conversion of methane to methanol). Final report  

SciTech Connect (OSTI)

In addition to inorganic catalysts that react with methane, it is well-known that a select group of aerobic soil/water bacteria called methanotrophs can efficiently and selectively utilize methane as the sole source of their energy and carbon for cellular growth. The first reaction in this metabolic pathway is catalyzed by the enzyme methane monooxygenase (MMO) forming methanol. Methanol is a technology important product from this partial oxidation of methane since it can be easily converted to liquid hydrocarbon transportation fuels (gasoline), used directly as a liquid fuel or fuel additive itself, or serve as a feedstock for chemicals production. This naturally occurring biocatalyst (MMO) is accomplishing a technologically important transformation (methane directly to methanol) for which there is currently no analogous chemical (non-biological) process. The authors approach has been to use the biocatalyst, MMO, as the initial focus in the development of discrete chemical catalysts (biomimetic complexes) for methane conversion. The advantage of this approach is that it exploits a biocatalytic system already performing a desired transformation of methane. In addition, this approach generated needed new experimental information on catalyst structure and function in order to develop new catalysts rationally and systematically. The first task is a comparative mechanistic, biochemical, and spectroscopic investigation of MMO enzyme systems. This work was directed at developing a description of the structure and function of the catalytically active sites in sufficient detail to generate a biomimetic material. The second task involves the synthesis, characterization, and chemical reactions of discrete complexes that mimic the enzymatic active site. These complexes were synthesized based on their best current understanding of the MMO active site structure.

Watkins, B.E.; Taylor, R.T.; Satcher, J.H. [and others

1993-09-01T23:59:59.000Z

82

Ab initio study of the structure and dynamics of solvated highly charged metal ions  

E-Print Network [OSTI]

Study of the Structure and Dynamics of Solvated Highly27 Chapter 3 Structure and Dynamics of the High Spin Fe 3+66 Chapter 4 Structure and Dynamics of the Hydrated Ca 2+

Bogatko, Stuart A.

2008-01-01T23:59:59.000Z

83

High energy density capacitors using nano-structure multilayer technology  

SciTech Connect (OSTI)

Today, many pulse power and industrial applications are limited by capacitor performance. While incremental improvements are anticipated from existing capacitor technologies, significant advances are needed in energy density to enable these applications for both the military and for American economic competitiveness. We propose a program to research and develop a novel technology for making high voltage, high energy density capacitors. Nano-structure multilayer technologies developed at LLNL may well provide a breakthrough in capacitor performance. Our controlled sputtering techniques are capable of laying down extraordinarily smooth sub-micron layers of dielectric and conductor materials. With this technology, high voltage capacitors with an order of magnitude improvement in energy density may be achievable. Well-understood dielectrics and new materials will be investigated for use with this technology. Capacitors developed by nano-structure multilayer technology are inherently solid state, exhibiting extraordinary mechanical and thermal properties. The conceptual design of a Notepad capacitor is discussed to illustrate capacitor and capacitor bank design and performance with this technology. We propose a two phase R&D program to address DNA`s capacitor needs for electro-thermal propulsion and similar pulse power programs. Phase 1 will prove the concept and further our understanding of dielectric materials and design tradeoffs with multilayers. Nano-structure multilayer capacitors will be developed and characterized. As our materials research and modeling prove successful, technology insertion in our capacitor designs will improve the possibility for dramatic performance improvements. In Phase 2, we will make Notepad capacitors, construct a capacitor bank and demonstrate its performance in a meaningful pulse power application. We will work with industrial partners to design full scale manufacturing and move this technology to industry for volume production.

Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

1992-08-01T23:59:59.000Z

84

Level Structure of 103Ag at high spins  

E-Print Network [OSTI]

High spin states in $^{103}$Ag were investigated with the Gammasphere array, using the $^{72}$Ge($^{35}$Cl,$2p2n$)$^{103}$Ag reaction at an incident beam energy of 135 MeV. A $\\Delta J$=1 sequence with predominantly magnetic transitions and two nearly-degenerate $\\Delta J=1$ doublet bands have been observed. The dipole band shows a decreasing trend in the $B(M1)$ strength as function of spin, a well established feature of magnetic bands. The nearly-degenerate band structures satisfy the three experimental signatures of chirality in the nuclei; however microscopic calculations are indicative of a magnetic phenomenon

S. Ray; N. S. Pattabiraman; Krishichayan; A. Chakraborty; S. Mukhopadhyay; S. S. Ghugre; S. N. Chintalapudi; A. K. Sinha; U. Garg; S. Zhu; B. Kharraja; D. Almehed

2007-12-07T23:59:59.000Z

85

Structural design criteria for high heat flux components.  

SciTech Connect (OSTI)

The high temperature design rules of the ITER Structural Design Criteria (ISDC), are applied to first wall designs with high heat flux. The maximum coolant pressure and surface heat flux capabilities are shown to be determined not only by the mechanical properties of the first wall material but also by the details of the blanket design. In a high power density self-cooled lithium blanket, the maximum primary stress in the first wall is controlled by many of the geometrical parameters of the blanket, such as, first wall span, first wall curvature, first wall thickness, side wall thickness, and second wall thickness. The creep ratcheting lifetime of the first wall is also shown to be controlled by many of the same geometrical parameters as well as the coolant temperature. According to most high temperature design codes, the time-dependent primary membrane stress allowable are based on the average temperature (ignoring thermal stress). Such a procedure may sometimes be unconservative, particularly for embrittled first walls with large temperature gradients. The effect of secondary (thermal) stresses on the accumulation of creep deformation is illustrated with a vanadium alloy flat plate first wall design.

Majumdar, S.

1999-07-14T23:59:59.000Z

86

A Structure-Based Distance Metric for High-Dimensional Space...  

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

A Structure-Based Distance Metric for High-Dimensional Space Exploration with Multi-Dimensional Scaling. A Structure-Based Distance Metric for High-Dimensional Space Exploration...

87

Structure Analysis of a Precipitate Phase in an Ni-Rich High...  

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

Structure Analysis of a Precipitate Phase in an Ni-Rich High Temperature NiTiHf Shape Memory Alloy. Structure Analysis of a Precipitate Phase in an Ni-Rich High Temperature NiTiHf...

88

Analysis of the rotational structure in the high-resolution infrared...  

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

rotational structure in the high-resolution infrared spectra of cis,cis- and trans,trans-1,4-difluorobutadiene-1 Analysis of the rotational structure in the high-resolution...

89

Analysis of the Rotational Structure in the High-Resolution Infrared...  

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

Rotational Structure in the High-Resolution Infrared Spectrum of trans-Hexatriene-1-13C1; a Semiexperimental Analysis of the Rotational Structure in the High-Resolution Infrared...

90

Comparison study of biomimetic strontium-doped calcium phosphate coatings by electrochemical deposition and air plasma  

E-Print Network [OSTI]

Comparison study of biomimetic strontium-doped calcium phosphate coatings by electrochemical April 2012 Ã? Springer Science+Business Media, LLC 2012 Abstract In this study, strontium-doped calcium of the strontium-doped calcium phosphate coatings were evaluated using bone cell culture using MC3T3-E1 osteoblast

Meng, Yizhi

91

Improving the efficiency of water splitting in dye-sensitized solar cells by using a biomimetic  

E-Print Network [OSTI]

Improving the efficiency of water splitting in dye-sensitized solar cells by using a biomimetic studied this problem in dye-sensitized solar cells where a molecular dye and a porous TiO2 electrode act been demonstrated using dye-sensitized electrodes. The quantum yield for water splitting in these dye

92

Robotics and Autonomous Systems 30 (2000) 515 Architectures for a biomimetic hexapod robot  

E-Print Network [OSTI]

Robotics and Autonomous Systems 30 (2000) 5­15 Architectures for a biomimetic hexapod robot Fred Institute, 405 North Mathews, Urbana, IL 61801, USA Abstract This paper describes a six-legged robot based on the features of an agile insect, the American cockroach, Periplaneta americana. The robot is designed

Nelson, Mark E.

93

TAILORING OF NANO-AND MICROSTRUCTURE IN BIOMIMETICALLY SYNTHESIZED CERAMIC FILMS  

E-Print Network [OSTI]

TAILORING OF NANO- AND MICROSTRUCTURE IN BIOMIMETICALLY SYNTHESIZED CERAMIC FILMS Guangneng Zhang University of New York at Binghamton Binghamton, NY 13902-6000 ABSTRACT A novel ceramic thin film deposition approach through which inorganic materials were deposited on a functionalized organic matrix from aqueous

Cho, Junghyun

94

Analysis of the Waggle Dance Motion of Honeybees for the Design of a Biomimetic Honeybee Robot  

E-Print Network [OSTI]

Analysis of the Waggle Dance Motion of Honeybees for the Design of a Biomimetic Honeybee Robot Tim, Cambridge, United Kingdom Abstract The honeybee dance ``language'' is one of the most popular examples honeybee that allows a deeper investigation of the communication process we have recorded hundreds

Rojas, Raúl

95

X-ray absorption spectroscopy of biomimetic dye molecules for solar cells Peter L. Cook,1  

E-Print Network [OSTI]

X-ray absorption spectroscopy of biomimetic dye molecules for solar cells Peter L. Cook,1 Xiaosong November 2009 Dye-sensitized solar cells are potentially inexpensive alternatives to traditional semiconductor solar cells. In order to optimize dyes for solar cells we systematically investigate

Himpsel, Franz J.

96

Structural and Aerodynamic Interaction Computational Tool for Highly Reconfigurable Wings  

E-Print Network [OSTI]

of the aerospace industry, and a reconfigurable wing is a significant element of a morphing aircraft. This thesis develops two tools for analyzing wing configurations with multiple geometric degrees-of-freedom: the structural tool and the aerodynamic and structural...

Eisenbeis, Brian Joseph

2011-10-21T23:59:59.000Z

97

Method for improving performance of highly stressed electrical insulating structures  

DOE Patents [OSTI]

Removing the electrical field from the internal volume of high-voltage structures; e.g., bushings, connectors, capacitors, and cables. The electrical field is removed from inherently weak regions of the interconnect, such as between the center conductor and the solid dielectric, and places it in the primary insulation. This is accomplished by providing a conductive surface on the inside surface of the principal solid dielectric insulator surrounding the center conductor and connects the center conductor to this conductive surface. The advantage of removing the electric fields from the weaker dielectric region to a stronger area improves reliability, increases component life and operating levels, reduces noise and losses, and allows for a smaller compact design. This electric field control approach is currently possible on many existing products at a modest cost. Several techniques are available to provide the level of electric field control needed. Choosing the optimum technique depends on material, size, and surface accessibility. The simplest deposition method uses a standard electroless plating technique, but other metalization techniques include vapor and energetic deposition, plasma spraying, conductive painting, and other controlled coating methods.

Wilson, Michael J. (Modesto, CA); Goerz, David A. (Brentwood, CA)

2002-01-01T23:59:59.000Z

98

Neural network definitions of highly predictable protein secondary structure classes  

SciTech Connect (OSTI)

We use two co-evolving neural networks to determine new classes of protein secondary structure which are significantly more predictable from local amino sequence than the conventional secondary structure classification. Accurate prediction of the conventional secondary structure classes: alpha helix, beta strand, and coil, from primary sequence has long been an important problem in computational molecular biology. Neural networks have been a popular method to attempt to predict these conventional secondary structure classes. Accuracy has been disappointingly low. The algorithm presented here uses neural networks to similtaneously examine both sequence and structure data, and to evolve new classes of secondary structure that can be predicted from sequence with significantly higher accuracy than the conventional classes. These new classes have both similarities to, and differences with the conventional alpha helix, beta strand and coil.

Lapedes, A. [Los Alamos National Lab., NM (United States)]|[Santa Fe Inst., NM (United States); Steeg, E. [Toronto Univ., ON (Canada). Dept. of Computer Science; Farber, R. [Los Alamos National Lab., NM (United States)

1994-02-01T23:59:59.000Z

99

Synthesis of High Surface Area Foams for Functional and Structural...  

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

in porous metallic bulk materials for functional applications such as catalysts, hydrogen storage or high-sensitivity sensors. Traditionally, high surface area functional...

100

High Sensitivity Combined with Extended Structural Coverage of...  

Office of Scientific and Technical Information (OSTI)

in producing ions with high efficiency and transmitting them to low pressures for high sensitivity mass spectrometry (MS) analysis. Here we present evidence that not only...

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


101

Phosphate bonded structural products from high volume wastes  

DOE Patents [OSTI]

A method to produce structural products from benign waste is provided comprising mixing pretreated oxide with phosphoric acid to produce an acid solution, mixing the acid solution with waste particles to produce a slurry, and allowing the slurry to cure. The invention also provides for a structural material comprising waste particles enveloped by an inorganic binder. 1 fig.

Singh, D.; Wagh, A.S.

1998-12-08T23:59:59.000Z

102

Nanosheet-structured LiV3O8 with high capacity and excellent...  

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

Highly stable LiV3O8 with a nanosheet-structure was successfully prepared using polyethylene glycol (PEG) polymer in the precursor solution as the structure modifying agent,...

103

Nanosheet-structured LiV3O8 with high capacity and excellent stability for high energy lithium batteries  

E-Print Network [OSTI]

for high-energy lithium battery applications. 1. Introduction Energy storage and conversion have sources.1­6 Lithium-ion batteries are considered to be the most promising energy-storage systemsNanosheet-structured LiV3O8 with high capacity and excellent stability for high energy lithium

Cao, Guozhong

104

Exploring electronic structure through high-resolution hard x...  

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

Laboratory Modern high brilliance beamlines coupled with recent advances in hard-x-ray optics are establishing high-resolution hard x-ray spectroscopies as a powerful analytical...

105

Integrating Structure Control over Multiple Length Scales in Porous High  

E-Print Network [OSTI]

temperature catalytic applications for their high surface area and low flow resistance in combination with thermal and chemical stability. We have developed a bottom-up approach to functional, porous, high results in three-dimensionally interconnected, high-temperature ceramic materials functionalized with well

Gruner, Sol M.

106

Correlating ribosome function with high-resolution structures  

E-Print Network [OSTI]

ribosome [9], functional complexes of ribosomes with mRNA and tRNAs [10­14] and/or with recycling [15 [24­26] and the ribosomal recycling factor [27]. Most of the currently available structures emerging are elab- orate analyses of results that have led to plausible [62] or controversial biological

Yonath, Ada E.

107

Structural Engineering Seminar Series Ultra-High Performance Concrete Construction  

E-Print Network [OSTI]

performance and resistance against environmental degradation. UHPC is defined as a concrete fiber composite for Our Future Infrastructure? by Kay Wille, PhD Assistant Professor, Civil and Environmental Engineering and conference proceedings. It has been used in various forms in structural and architectural elements, as a bond

Kamat, Vineet R.

108

High-Pressure MOF Research Yields Structural Insights  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr FlickrGuidedCH2M HILLAdministrationHighHighHigh-Pressure MOF

109

High-Pressure MOF Research Yields Structural Insights  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr FlickrGuidedCH2M HILLAdministrationHighHighHigh-Pressure

110

Robust, High-Throughput Analysis of Protein Structures  

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

described here, which the research team believes will help usher in the next phase of genomics research. The high flux, brilliance, and focus of the x rays from ALS Beamline 12.3.1...

111

Water and Solute Flow in a Highly-Structured Soil  

E-Print Network [OSTI]

Prevention of groundwater contamination by agricultural activities is a high priority in the United States. Water and contaminants often follow particular flow paths through the soil that lead to rapid movement of pesticides out of the rootzone...

Hallmark, C. Tom; Wilding, Larry P.; McInnes, Kevin J.; Heuvelman, Willem J.

112

Ductility enhancement of high performance cementitious composites and structures  

E-Print Network [OSTI]

High performance cementitious composites (HP2C) are a new generation of fiber reinforced cementitious composites (FRCC) with substantial improvements in mechanical behavior. The most important development in these HP2C ...

Chuang, Eugene (Eugene Yu), 1975-

2002-01-01T23:59:59.000Z

113

Radiation damage in biomimetic dye molecules for solar cells Peter L. Cook, Phillip S. Johnson, Xiaosong Liu, An-Li Chin, and F. J. Himpsela  

E-Print Network [OSTI]

Radiation damage in biomimetic dye molecules for solar cells Peter L. Cook, Phillip S. Johnson for biomimetic dye molecules for solar cells phthalocyanines and for a biological analog the charge transfer carriers in a solar cell. © 2009 American Institute of Physics. doi:10.1063/1.3267849 I. INTRODUCTION

Himpsel, Franz J.

114

Electronic-Structure of High-Temperature Superconductors  

E-Print Network [OSTI]

, and for the corresponding metal atoms in related high-temperature superconductors. These peaks should be observable in electron energy-loss spectroscopy's and 6nal-state photoemission spectrosco- py 20 The calculated valences d,n are again given in Table II. Notice... again neatly cancel in YBa2Cu307. In summary, we have calculated the electronic struc- tures of the most typical members of the two known classes of high-temperature superconductors. The present results, obtained with a simple tight-binding model...

RICHERT, BA; Allen, Roland E.

1988-01-01T23:59:59.000Z

115

High-Pressure MOF Research Yields Structural Insights  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in thein the AssemblyHigh-OrderFlame andHigh-Pressure

116

High-Pressure MOF Research Yields Structural Insights  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in thein the AssemblyHigh-OrderFlameHigh-Pressure MOF

117

High-Pressure MOF Research Yields Structural Insights  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in thein the AssemblyHigh-OrderFlameHigh-Pressure

118

High-Pressure MOF Research Yields Structural Insights  

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

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

119

High-Pressure MOF Research Yields Structural Insights  

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

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

120

High-spin structure and Band Termination in $^{103}$Cd  

E-Print Network [OSTI]

Excited states of the neutron deficient $^{103}$Cd nucleus have been investigated via the $^{72}$Ge($^{35}$Cl, p3n) reaction at beam energy of 135 MeV by use of in-beam spectroscopic methods. Gamma rays depopulating the excited states were detected using the Gammasphere spectrometer with high-fold $\\gamma$-ray coincidences. A quadrupole $\\gamma$-ray coincidence analysis ($\\gamma^{4}$) has been used to extend the known level scheme. The positive parity levels have been established up to $J = 35/2\\hbar$ and $E_{x} = 7.071$ MeV. In addition to the observation of highly-fragmented level scheme belonging to the positive-parity sequences at E$_{x}\\sim$ 5 MeV, the termination of a negative-parity sequence connected by $E2$ transitions has been established at $J = 47/2 \\hbar$ and $E_{x} = 11.877$ MeV. The experimental results corresponding to both the positive- and negative-parity sequences have been theoretically interpreted in the framework of the core particle coupling model. Evidence is presented for a shape change from collective prolate to non-collective oblate above the $J^{\\pi} = 39/2^{-}$ (8011 keV) level and for a smooth termination of the negative-parity band.

A. Chakraborty; Krishichayan; S. Mukhopadhyay; S. Ray; S. N. Chintalapudi; S. S. Ghugre; N. S. Pattabiraman; A. K. Sinha; S. Sarkar; U. Garg; S. Zhu; M. Saha Sarkar

2007-09-11T23:59:59.000Z

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


121

High efficiency proportional neutron detector with solid liner internal structures  

DOE Patents [OSTI]

A tube-style neutron detector, a panel-style neutron detector incorporating a plurality of tube-style neutron detectors, and a panel-style neutron detector including a plurality of anode wires are provided. A plurality of channels is provided in a neutron detector such that each channel has an inner surface of a coating layer including a neutron-absorbing material. A wire anode is provided at end of each channel so that electrons generated by a charged daughter particle generated by a neutron are collected to detect a neutron-matter interaction. Moderator units can be incorporated into a neutron detector to provide improved detection efficiencies and/or to determine neutron energy spectrum. Gas-based proportional response from the neutron detectors can be employed for special nuclear material (SNM) detection. This neutron detector can provide similar performance to .sup.3He-based detectors without requiring .sup.3He and without containing toxic, flammable, or high-pressure materials.

Kisner, Roger Allen; Holcomb, David Eugene; Brown, Gilbert M.

2014-08-05T23:59:59.000Z

122

Replication of Two-Photon-Polymerized Structures with Extremely High Aspect Ratios and Large Overhangs  

E-Print Network [OSTI]

Replication of Two-Photon-Polymerized Structures with Extremely High Aspect Ratios and Large created with an acrylic polymer using multiphoton absorption polymerization. Microtransfer molding be expected from the diffraction limit. Multiphoton absorption polymerization (MAP) with 800-nm light

Teich, Malvin C.

123

Beyond Basic Region Caching: Specializing Cache Structures for High Performance and Energy  

E-Print Network [OSTI]

's usage char- acteristics provides many potential benefits: faster access times, lower energy con a small heap footprint, we save energy by using the smaller structure and turn off the larger. For applications with larger footprints, we use both structures, but save energy by keeping highly used "hot" data

McKee, Sally A.

124

Lagrangian Structures in Very High-Frequency Radar Data and Optimal Pollution Timing  

E-Print Network [OSTI]

Lagrangian Structures in Very High-Frequency Radar Data and Optimal Pollution Timing Francois radar-based pollution release scheme using the hidden flow structure reduces the effect of industrial pollution in the coastal environment. INTRODUCTION The release of pollution in coastal areas [1, 2, 3] can

Marsden, Jerrold

125

High-Speed and Low-Power PID Structures for Embedded Applications  

E-Print Network [OSTI]

High-Speed and Low-Power PID Structures for Embedded Applications Abdelkrim K. Oudjida1 , Nicolas-power finite-word-length PID controllers based on a new recursive multiplication algorithm. Compared scalable PID structures that can be tailored to the desired performance and power budget. All PIDs

Boyer, Edmond

126

Structural integrity and potential failure modes of hanford high-level waste tanks  

SciTech Connect (OSTI)

Structural Integrity of the Hanford High-Level Waste Tanks were evaluated based on the existing Design and Analysis Documents. All tank structures were found adequate for the normal operating and seismic loads. Potential failure modes of the tanks were assessed by engineering interpretation and extrapolation of the existing engineering documents.

Han, F.C.

1996-09-30T23:59:59.000Z

127

Development of High-Gradient Dielectric Laser-Driven Particle Accelerator Structures  

SciTech Connect (OSTI)

The thrust of Stanford's program is to conduct research on high-gradient dielectric accelerator structures driven with high repetition-rate, tabletop infrared lasers. The close collaboration between Stanford and SLAC (Stanford Linear Accelerator Center) is critical to the success of this project, because it provides a unique environment where prototype dielectric accelerator structures can be rapidly fabricated and tested with a relativistic electron beam.

Byer, Robert L.

2013-11-07T23:59:59.000Z

128

QCD Precision Measurements and Structure Function Extraction at a High Statistics, High Energy Neutrino Scattering Experiment: NuSOnG  

SciTech Connect (OSTI)

We extend the physics case for a new high-energy, ultra-high statistics neutrino scattering experiment, NuSOnG (Neutrino Scattering On Glass) to address a variety of issues including precision QCD measurements, extraction of structure functions, and the derived Parton Distribution Functions (PDFs). This experiment uses a Tevatron-based neutrino beam to obtain a sample of Deep Inelastic Scattering (DIS) events which is over two orders of magnitude larger than past samples. We outline an innovative method for fitting the structure functions using a parameterized energy shift which yields reduced systematic uncertainties. High statistics measurements, in combination with improved systematics, will enable NuSOnG to perform discerning tests of fundamental Standard Model parameters as we search for deviations which may hint of 'Beyond the Standard Model' physics.

Adams, T.; /Florida State U.; Batra, P.; /Columbia U.; Bugel, Leonard G.; /Columbia U.; Camilleri, Leslie Loris; /Columbia U.; Conrad, Janet Marie; /MIT; de Gouvea, A.; /Northwestern U.; Fisher, Peter H.; /MIT; Formaggio, Joseph Angelo; /MIT; Jenkins, J.; /Northwestern U.; Karagiorgi, Georgia S.; /MIT; Kobilarcik, T.R.; /Fermilab /Texas U.

2009-06-01T23:59:59.000Z

129

Nano-Structured Li3V2(PO4)3 /Carbon Composite for High Rate Lithium...  

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

Nano-Structured Li3V2(PO4)3 Carbon Composite for High Rate Lithium Ion Batteries. Nano-Structured Li3V2(PO4)3 Carbon Composite for High Rate Lithium Ion Batteries. Abstract:...

130

Facile synthesis of Li2Spolypyrrole composite structures for high-performance Li2S cathodes  

E-Print Network [OSTI]

Facile synthesis of Li2S­polypyrrole composite structures for high-performance Li2S cathodes Zhi demon- strate facile, in situ synthesis of Li2S­polypyrrole composites for use as high-performance Li2S polysulfides during cycling. Poly- pyrrole, being a conducting polymer, also helps to facilitate elec- tronic

Cui, Yi

131

Phase Structure and Properties of Poly(ethylene terephthalate)/High-Density Polyethylene Based on  

E-Print Network [OSTI]

Phase Structure and Properties of Poly(ethylene terephthalate)/High-Density Polyethylene Based.interscience.wiley.com). ABSTRACT: Blends based on recycled high density polyethylene (R-HDPE) and recycled poly(ethylene tereph- thalate) (R-PET) were made through reactive extrusion. The effects of maleated polyethylene (PE

132

Laminin and biomimetic extracellular elasticity enhance functional differentiation in mammary epithelia  

SciTech Connect (OSTI)

In the mammary gland, epithelial cells are embedded in a 'soft' environment and become functionally differentiated in culture when exposed to a laminin-rich extracellular matrix gel. Here, we define the processes by which mammary epithelial cells integrate biochemical and mechanical extracellular cues to maintain their differentiated phenotype. We used single cells cultured on top of gels in conditions permissive for {beta}-casein expression using atomic force microscopy to measure the elasticity of the cells and their underlying substrata. We found that maintenance of {beta}-casein expression required both laminin signalling and a 'soft' extracellular matrix, as is the case in normal tissues in vivo, and biomimetic intracellular elasticity, as is the case in primary mammary epithelial organoids. Conversely, two hallmarks of breast cancer development, stiffening of the extracellular matrix and loss of laminin signalling, led to the loss of {beta}-casein expression and non-biomimetic intracellular elasticity. Our data indicate that tissue-specific gene expression is controlled by both the tissues unique biochemical milieu and mechanical properties, processes involved in maintenance of tissue integrity and protection against tumorigenesis.

Alcaraz, Jordi; Xu, Ren; Mori, Hidetoshi; Nelson, Celeste M.; Mroue, Rana; Spencer, Virginia A.; Brownfield, Doug; Radisky, Derek C.; Bustamante, Carlos; Bissell, Mina J.

2008-10-20T23:59:59.000Z

133

Electrospray-assisted characterization and deposition of chlorosomes to fabricate a biomimetic light-harvesting device  

SciTech Connect (OSTI)

Photosynthesis is an efficient process by which solar energy is converted into chemical energy. Green photosynthetic bacteria such as Chloroflexus aurantiacus have supramolecular antenna complexes called chlorosomes attached to their cytoplasmic membrane that increase the cross section for light absorption even in low-light conditions. Self-assembled bacteriochlorophyll pigments in the chlorosome interior play a key role in the efficient transfer and funneling of the harvested energy. In this work it was demonstrated that chlorosomes can be rapidly and precisely size-characterized online in real time using an electrospray-assisted mobility-based technique. Chlorosomes were electrospray-deposited onto TiO{sub 2} nanostructured films with columnar morphology to fabricate a novel biomimetic device to overcome the solvent compatibility issues associated with biological particles and synthetic dyes. The assembled unit retained the viability of the chlorosomes, and the harvesting of sunlight over a broader range of wavelengths was demonstrated. It was shown that the presence of chlorosomes in the biomimetic device had a 30-fold increase in photocurrent.

Modesto-Lopez, Luis B.; Thimsen, Elijah J.; Collins, Aaron M.; Blankenship, R. E.; Biswas, Pratim

2010-01-01T23:59:59.000Z

134

Biomimetic synthesis of hierarchical crystalline hydroxyapatite fibers in large-scale  

SciTech Connect (OSTI)

Highlights: ? Crystalline hierarchical hydroxyapatite (HAp) fibers are synthesized. ? We employ a biomimetic route by using cotton cloth as a natural bio-template. ? We study the effects of pH, ultrasonic cleaning time, and calcination temperature. ? We obtain an optimized reaction condition. ? This is a low cost method for production of hierarchical HAp fibers. -- Abstract: Crystalline hierarchical hydroxyapatite [Ca{sub 10}(PO{sub 4}){sub 6}(OH){sub 2}, HAp)] fibers were successfully synthesized via a biomimetic route by using cotton cloth as a natural bio-template. The effects of pH value, aging time, ultrasonic cleaning time, and calcination temperature on the purity and morphology of the resulting hydroxyapatite (HAp) were monitored by scanning election microscope (SEM), X-ray diffraction (XRD), and infrared spectrophotometer (IR) to obtain an optimized reaction condition, namely, pH 9, ultrasonic cleaning for 1 min, aging for 24 h, and calcination at 600 °C for 4 h. We found that the natural cellulose could not only control the morphology of HAp but also lower its phase transformation temperature. The impact of this method lies in its low cost and successful production of large-scale patterning of three-dimensional hierarchical HAp fibers.

Xing, Chaogang; Ge, Suxiang; Huang, Baojun; Bo, Yingying [Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province 461000 (China)] [Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province 461000 (China); Zhang, Di [State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030 (China)] [State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030 (China); Zheng, Zhi, E-mail: zhengzhi9999@yahoo.com.cn [Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province 461000 (China)] [Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province 461000 (China)

2012-06-15T23:59:59.000Z

135

Structural changes in nano-crystalline mackinawite (FeS) at high - pressure.  

SciTech Connect (OSTI)

The high-pressure behavior of nanocrystalline mackinawite (FeS) with particle sizes of 6, 7 and 8 nm has been investigated by high-energy X-ray total scattering and pair distribution function analysis. An irreversible first-order structural phase transition from tetragonal mackinawite to orthorhombic FeS-II was observed at about 3 GPa. The transition is induced by the closure of the van der Waals gap in the layered mackinawite structure. A grain size effect on the transition pressure and the compressibility was observed.

Ehm, L.; Michael, F. M.; Antao, S. M.; Martin, C. D.; Lee, P. L.; Shastri, S. D.; Chupas, P. J.; Parise, J. B.; Stony Brook Univ.

2009-02-01T23:59:59.000Z

136

HIGH DIMENSIONAL ELLENTUCK SPACES AND INITIAL CHAINS IN THE TUKEY STRUCTURE OF NON-P-POINTS  

E-Print Network [OSTI]

HIGH DIMENSIONAL ELLENTUCK SPACES AND INITIAL CHAINS IN THE TUKEY STRUCTURE OF NON-P-POINTS NATASHA maximum nor minimum in the Tukey order of ultrafilters ([1]), but it was left open where exactly in the Tukey order it lies. We prove that G2 is in fact Tukey minimal over its projected Ramsey ultrafilter

Dobrinen, Natasha

137

Structural parameters The analytical model proposed here can explain high fracture  

E-Print Network [OSTI]

Structural parameters · The analytical model proposed here can explain high fracture toughness, P.J., et al., Engineering Fracture Mechanics, 2007. 74: p. 19281941. 4. Ritchie, R.O., et al Tensile strength Fracture toughness Composite properties E max S )~( ~ aJ III. Fracture toughness

Barthelat, Francois

138

Key technological issues in LMFBR high-temperature structural design - the US perspective  

SciTech Connect (OSTI)

The purpose of this paper is: (1) to review the key technological issues in LMFBR high-temperature structural design, particularly as they relate to cost reduction; and (2) to provide an overview of activities sponsored by the US Department of Energy to resolve the issues and to establish stable, standardized, and defensible structural design methods and criteria. Specific areas of discussion include: weldments, structural validation tests, simplified design analysis procedures, design procedures for piping, validation of the methodology for notch-like geometries, improved life assessment procedures, thermal striping, extension of the methodology to new materials, and ASME high-temperature Code reform needs. The perceived problems and needs in each area are discussed, and the current status of related US activities is given.

Corum, J.M.

1984-01-01T23:59:59.000Z

139

Guidelines for development of structural integrity programs for DOE high-level waste storage tanks  

SciTech Connect (OSTI)

Guidelines are provided for developing programs to promote the structural integrity of high-level waste storage tanks and transfer lines at the facilities of the Department of Energy. Elements of the program plan include a leak-detection system, definition of appropriate loads, collection of data for possible material and geometric changes, assessment of the tank structure, and non-destructive examination. Possible aging degradation mechanisms are explored for both steel and concrete components of the tanks, and evaluated to screen out nonsignificant aging mechanisms and to indicate methods of controlling the significant aging mechanisms. Specific guidelines for assessing structural adequacy will be provided in companion documents. Site-specific structural integrity programs can be developed drawing on the relevant portions of the material in this document.

Bandyopadhyay, K.; Bush, S.; Kassir, M.; Mather, B.; Shewmon, P.; Streicher, M.; Thompson, B.; Rooyen, D. van; Weeks, J.

1997-01-01T23:59:59.000Z

140

High-energy mechanical synthesis of nanophase fluorite-structured mixed oxide catalysts with a high redox activity  

SciTech Connect (OSTI)

A series of nanostructured, highly defective, ternary solid solutions containing CeO{sub 2}, ZrO{sub 2}, and MnO{sub 2} or CuO were prepared by high-energy mechanical milling of individual components. Morphological and redox properties were studied by XRD, HRTEM and temperature-programmed reduction techniques. It was shown that the introduction of small amounts of copper and manganese strongly promotes the redox behavior of cerium at lower temperatures in comparison with CeO{sub 2} and CeO{sub 2}-ZrO{sub 2}. High temperature treatment of up to 1,400 K was also shown to further promote overall redox capacity without affecting low-temperature redox behavior. Moreover, evidence is provided to show that Cu and Mn are dissolved within the CeO{sub 2} lattice structure. Addition of dopants enhances catalytic redox properties in the oxidation of CO at low temperatures, which is associated with the high concentration of oxygen vacancies that form on the introduction of aliovalent elements into the ceria-zirconia lattice.

Primavera, A.; Trovarelli, A.; Terribile, D.; Leitenburg, C. de; Dolcetti, G. [Univ. di Udine (Italy). Dipt. di Scienze e Tecnologie Chimiche; Llorca, J. [Univ. de Barcelona (Spain). Dept. de Quimica Inorganica

1997-12-31T23:59:59.000Z

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


141

Thermodynamics and Structural Properties of the High Density Gaussian Core Model  

E-Print Network [OSTI]

We numerically study thermodynamic and structural properties of the one-component Gaussian core model (GCM) at very high densities. The solid-fluid phase boundary is carefully determined. We find that the density dependence of both the freezing and melting temperatures obey the asymptotic relation, $\\log T_f$, $\\log T_m \\propto -\\rho^{2/3}$, where $\\rho$ is the number density, which is consistent with Stillinger's conjecture. Thermodynamic quantities such as the energy and pressure and the structural functions such as the static structure factor are also investigated in the fluid phase for a wide range of temperature above the phase boundary. We compare the numerical results with the prediction of the liquid theory with the random phase approximation (RPA). At high temperatures, the results are in almost perfect agreement with RPA for a wide range of density, as it has been already shown in the previous studies. In the low temperature regime close to the phase boundary line, although RPA fails to describe the structure factors and the radial distribution functions at the length scales of the interparticle distance, it successfully predicts their behaviors at shorter length scales. RPA also predicts thermodynamic quantities such as the energy, pressure, and the temperature at which the thermal expansion coefficient becomes negative, almost perfectly. Striking ability of RPA to predict thermodynamic quantities even at high densities and low temperatures is understood in terms of the decoupling of the length scales which dictate thermodynamic quantities from the interparticle distance which dominates the peak structures of the static structure factor due to the softness of the Gaussian core potential.

Atsushi Ikeda; Kunimasa Miyazaki

2011-07-20T23:59:59.000Z

142

Liquid-based biomimetic hairlike structures can be micro-fabricated using a novel technology de-  

E-Print Network [OSTI]

Wentzloff is researching energy-efficient receiver architectures incorporating an RF MEMS filter-bank frontend to increase battery life- time. Because channel selection is achieved at the front end, a fully

Eustice, Ryan

143

High resolution structure of the large ribosomal subunit from a Mesophilic Eubacterium  

SciTech Connect (OSTI)

We describe the high resolution structure of the large ribosomal subunit from Deinococcus radiodurans (D50S), a gram-positive mesophile suitable for binding of antibiotics and functionally relevant ligands. The over-all structure of D50S is similar to that from the archae bacterium Haloarcula marismortui (H50S); however, a detailed comparison revealed significant differences, for example, in the orientation of nucleotides in peptidyl transferase center and in the structures of many ribosomal proteins. Analysis of ribosomal features involved in dynamic aspects of protein biosynthesis that are partially or fully disordered in H50S revealed the conformations of intersubunit bridges in unbound subunits, suggesting how they may change upon subunit association and how movements of the L1-stalk may facilitate the exit of tRNA.

Harms, Joerg; Schluenzen, Frank; Zarivach, Raz; Bashan, Anat; Gat, Sharon; Agmon, Ilana; Bartels, Heike; Franceschi, Francois; Yonath, Ada (Weizmann Inst Israel); (Mac Planck Germany); (Max Planck Germany)

2009-10-07T23:59:59.000Z

144

High energy density capacitors for power electronic applications using nano-structure multilayer technology  

SciTech Connect (OSTI)

Power electronics applications are currently limited by capacitor size and performance. Only incremental improvements are anticipated in existing capacitor technologies, while significant performance advances are required in energy density and overall performance to meet the technical needs of the applications which are important for U.S. economic competitiveness. One application, the Power Electronic Building Block (PEBB), promises a second electronics revolution in power electronic design. High energy density capacitors with excellent electrical thermal and mechanical performance represent an enabling technology in the PEBB concept. We propose a continuing program to research and develop LLNL`s nano-structure multilayer technologies for making high voltage, high energy density capacitors. Our controlled deposition techniques are capable of synthesizing extraordinarily smooth sub-micron thick layers of dielectric and conductor materials. We have demonstrated that, with this technology, high voltage capacitors with an order of magnitude improvement in energy density are achievable.

Barbee, T.W. Jr.; Johnson, G.W.

1995-09-01T23:59:59.000Z

145

The Time Structure of Hadronic Showers in highly granular Calorimeters with Tungsten and Steel Absorbers  

E-Print Network [OSTI]

The intrinsic time structure of hadronic showers influences the timing capability and the required integration time of hadronic calorimeters in particle physics experiments, and depends on the active medium and on the absorber of the calorimeter. With the CALICE T3B experiment, a setup of 15 small plastic scintillator tiles read out with Silicon Photomultipliers, the time structure of showers is measured on a statistical basis with high spatial and temporal resolution in sampling calorimeters with tungsten and steel absorbers. The results are compared to GEANT4 (version 9.4 patch 03) simulations with different hadronic physics models. These comparisons demonstrate the importance of using high precision treatment of low-energy neutrons for tungsten absorbers, while an overall good agreement between data and simulations for all considered models is observed for steel.

Adloff, C; Chefdeville, M.; Drancourt, C.; Gaglione, R.; Geffroy, N.; Karyotakis, Y.; Koletsou, I.; Prast, J.; Vouters, G.; Repond, J.; Schlereth, J.; Xia, L.; Baldolemar, E.; Li, J.; Park, S.T.; Sosebee, M.; White, A.P.; Yu, J.; Eigen, G.; Thomson, M.A.; Ward, D.R.; Benchekroun, D.; Hoummada, A.; Khoulaki, Y.; Apostolakis, J.; Arfaoui, A.; Benoit, M.; Dannheim, D.; Elsener, K.; Folger, G.; Grefe, C.; Ivantchenko, V.; Killenberg, M.; Klempt, W.; van der Kraaij, E.; Linssen, L.; Lucaci-Timoce, A.-I.; Münnich, A.; Poss, S.; Ribon, A.; Roloff, P.; Sailer, A.; Schlatter, D.; Sicking, E.; Strube, J.; Uzhinskiy, V.; Carloganu, C.; Gay, P.; Manen, S.; Royer, L.; Cornett, U.; David, D.; Ebrahimi, A.; Falley, G.; Feege, N.; Gadow, K.; Göttlicher, P.; Günter, C.; Hartbrich, O.; Hermberg, B.; Karstensen, S.; Krivan, F.; Krüger, K.; Lu, S.; Lutz, B.; Morozov, S.; Morgunov, V.; Neubüser, C.; Reinecke, M.; Sefkow, F.; Smirnov, P.; Terwort, M.; Fagot, A.; Tytgat, M.; Zaganidis, N.; Hostachy, J.-Y.; Morin, L.; Garutti, E.; Laurien, S.; Marchesini, I.; Matysek, M.; Ramilli, M.; Briggl, K.; Eckert, P.; Harion, T.; Schultz-Coulon, H.-Ch.; Shen, W.; Stamen, R.; Chang, S.; Khan, A.; Kim, D.H.; Kong, D.J.; Oh, Y.D.; Bilki, B.; Norbeck, E.; Northacker, D.; Onel, Y.; Wilson, G.W.; Kawagoe, K.; Miyazaki, Y.; Sudo, Y.; Ueno, H.; Yoshioka, T.; Dauncey, P.D.; Cortina Gil, E.; Mannai, S.; Baulieu, G.; Calabria, P.; Caponetto, L.; Combaret, C.; Della Negra, R.; Ete, R.; Grenier, G.; Han, R.; Ianigro, J-C.; Kieffer, R.; Laktineh, I.; Lumb, N.; Mathez, H.; Mirabito, L.; Petrukhin, A.; Steen, A.; Tromeur, W.; Vander Donckt, M.; Zoccarato, Y.; Berenguer Antequera, J.; Calvo Alamillo, E.; Fouz, M.-C.; Puerta-Pelayo, J.; Corriveau, F.; Bobchenko, B.; Chadeeva, M.; Danilov, M.; Epifantsev, A.; Markin, O.; Mizuk, R.; Novikov, E.; Rusinov, V.; Tarkovsky, E.; Kozlov, V.; Soloviev, Y.; Besson, D.; Buzhan, P.; Ilyin, A.; Kantserov, V.; Kaplin, V.; Popova, E.; Tikhomirov, V.; Gabriel, M.; Kiesling, C.; Seidel, K.; Simon, F.; Soldner, C.; Szalay, M.; Tesar, M.; Weuste, L.; Amjad, M.S.; Bonis, J.; Conforti di Lorenzo, S.; Cornebise, P.; Fleury, J.; Frisson, T.; van der Kolk, N.; Richard, F.; Pöschl, R.; Rouene, J.; Anduze, M.; Balagura, V.; Becheva, E.; Boudry, V.; Brient, J-C.; Cornat, R.; Frotin, M.; Gastaldi, F.; Guliyev, E.; Haddad, Y.; Magniette, F.; Ruan, M.; Tran, T.H.; Videau, H.; Callier, S.; Dulucq, F.; Martin-Chassard, G.; de la Taille, Ch.; Raux, L.; Seguin-Moreau, N.; Zacek, J.; Cvach, J.; Gallus, P.; Havranek, M.; Janata, M.; Kvasnicka, J.; Lednicky, D.; Marcisovsky, M.; Polak, I.; Popule, J.; Tomasek, L.; Tomasek, M.; Ruzicka, P.; Sicho, P.; Smolik, J.; Vrba, V.; Zalesak, J.; Belhorma, B.; Ghazlane, H.; Kotera, K.; Ono, H.; Takeshita, T.; Uozumi, S.; Chai, J.S.; Song, H.S.; Lee, S.H.; Götze, M.; Sauer, J.; Weber, S.; Zeitnitz, C.

2014-01-01T23:59:59.000Z

146

The Time Structure of Hadronic Showers in highly granular Calorimeters with Tungsten and Steel Absorbers  

E-Print Network [OSTI]

The intrinsic time structure of hadronic showers influences the timing capability and the required integration time of hadronic calorimeters in particle physics experiments, and depends on the active medium and on the absorber of the calorimeter. With the CALICE T3B experiment, a setup of 15 small plastic scintillator tiles read out with Silicon Photomultipliers, the time structure of showers is measured on a statistical basis with high spatial and temporal resolution in sampling calorimeters with tungsten and steel absorbers. The results are compared to GEANT4 (version 9.4 patch 03) simulations with different hadronic physics models. These comparisons demonstrate the importance of using high precision treatment of low-energy neutrons for tungsten absorbers, while an overall good agreement between data and simulations for all considered models is observed for steel.

C. Adloff; J. -J. Blaising; M. Chefdeville; C. Drancourt; R. Gaglione; N. Geffroy; Y. Karyotakis; I. Koletsou; J. Prast; G. Vouters J. Repond; J. Schlereth; L. Xia E. Baldolemar; J. Li; S. T. Park; M. Sosebee; A. P. White; J. Yu; G. Eigen; M. A. Thomson; D. R. Ward; D. Benchekroun; A. Hoummada; Y. Khoulaki J. Apostolakis; S. Arfaoui; M. Benoit; D. Dannheim; K. Elsener; G. Folger; C. Grefe; V. Ivantchenko; M. Killenberg; W. Klempt; E. van der Kraaij; L. Linssen; A. -I. Lucaci-Timoce; A. Münnich; S. Poss; A. Ribon; P. Roloff; A. Sailer; D. Schlatter; E. Sicking; J. Strube; V. Uzhinskiy; C. Carloganu; P. Gay; S. Manen; L. Royer; U. Cornett; D. David; A. Ebrahimi; G. Falley; N. Feege; K. Gadow; P. Göttlicher; C. Günter; O. Hartbrich; B. Hermberg; S. Karstensen; F. Krivan; K. Krüger; S. Lu; B. Lutz; S. Morozov; V. Morgunov; C. Neubüser; M. Reinecke; F. Sefkow; P. Smirnov; M. Terwort; A. Fagot; M. Tytgat; N. Zaganidis; J. -Y. Hostachy; L. Morin; E. Garutti; S. Laurien; I. Marchesini; M. Matysek; M. Ramilli; K. Briggl; P. Eckert; T. Harion; H. -Ch. Schultz-Coulon; W. Shen; R. Stamen; S. Chang; A. Khan; D. H. Kim; D. J. Kong; Y. D. Oh; B. Bilki; E. Norbeck; D. Northacker; Y. Onel; G. W. Wilson; K. Kawagoe; Y. Miyazaki; Y. Sudo; H. Ueno; T. Yoshioka; P. D. Dauncey; E. Cortina Gil; S. Mannai; G. Baulieu; P. Calabria; L. Caponetto; C. Combaret; R. Della Negra; R. Ete; G. Grenier; R. Han; J-C. Ianigro; R. Kieffer; I. Laktineh; N. Lumb; H. Mathez; L. Mirabito; A. Petrukhin; A. Steen; W. Tromeur; M. Vander Donckt; Y. Zoccarato J. Berenguer Antequera; E. Calvo Alamillo; M. -C. Fouz; J. Puerta-Pelayo; F. Corriveau; B. Bobchenko; M. Chadeeva; M. Danilov; A. Epifantsev; O. Markin; R. Mizuk; E. Novikov; V. Rusinov; E. Tarkovsky; V. Kozlov; Y. Soloviev; D. Besson; P. Buzhan; A. Ilyin; V. Kantserov; V. Kaplin; E. Popova; V. Tikhomirov; M. Gabriel; C. Kiesling; K. Seidel; F. Simon; C. Soldner; M. Szalay; M. Tesar; L. Weuste; M. S. Amjad; J. Bonis; S. Conforti di Lorenzo; P. Cornebise; J. Fleury; T. Frisson; N. van der Kolk; F. Richard; R. Pöschl; J. Rouene; M. Anduze; V. Balagura; E. Becheva; V. Boudry; J-C. Brient; R. Cornat; M. Frotin; F. Gastaldi; E. Guliyev; Y. Haddad; F. Magniette; M. Ruan; T. H. Tran; H. Videau; S. Callier; F. Dulucq; G. Martin-Chassard; Ch. de la Taille; L. Raux; N. Seguin-Moreau; J. Zacek; J. Cvach; P. Gallus; M. Havranek; M. Janata; J. Kvasnicka; D. Lednicky; M. Marcisovsky; I. Polak; J. Popule; L. Tomasek; M. Tomasek; P. Ruzicka; P. Sicho; J. Smolik; V. Vrba; J. Zalesak; . Belhorma; H. Ghazlane; K. Kotera; H. Ono; T. Takeshita; S. Uozumi; J. S. Chai; H. S. Song; S. H. Lee; M. Götze; J. Sauer; S. Weber; C. Zeitnitz

2014-07-21T23:59:59.000Z

147

Cavity resonance absorption in ultra-high bandwidth CRT deflection structure by a resistive load  

DOE Patents [OSTI]

An improved ultra-high bandwidth helical coil deflection structure for a cathode ray tube is described comprising a first metal member having a bore therein, the metal walls of which form a first ground plane; a second metal member coaxially mounted in the bore of the first metal member and forming a second ground plane; a helical deflection coil coaxially mounted within the bore between the two ground planes; and a resistive load disposed in one end of the bore and electrically connected to the first and second ground planes, the resistive load having an impedance substantially equal to the characteristic impedance of the coaxial line formed by the two coaxial ground planes to inhibit cavity resonance in the structure within the ultra-high bandwidth of operation. Preferably, the resistive load comprises a carbon film on a surface of an end plug in one end of the bore.

Dunham, M.E.; Hudson, C.L.

1993-05-11T23:59:59.000Z

148

High-pressure structural and elastic properties of Tl{sub 2}O{sub 3}  

SciTech Connect (OSTI)

The structural properties of Thallium (III) oxide (Tl{sub 2}O{sub 3}) have been studied both experimentally and theoretically under compression at room temperature. X-ray powder diffraction measurements up to 37.7?GPa have been complemented with ab initio total-energy calculations. The equation of state of Tl{sub 2}O{sub 3} has been determined and compared to related compounds. It has been found experimentally that Tl{sub 2}O{sub 3} remains in its initial cubic bixbyite-type structure up to 22.0?GPa. At this pressure, the onset of amorphization is observed, being the sample fully amorphous at 25.2?GPa. The sample retains the amorphous state after pressure release. To understand the pressure-induced amorphization process, we have studied theoretically the possible high-pressure phases of Tl{sub 2}O{sub 3}. Although a phase transition is theoretically predicted at 5.8?GPa to the orthorhombic Rh{sub 2}O{sub 3}-II-type structure and at 24.2?GPa to the orthorhombic ?-Gd{sub 2}S{sub 3}-type structure, neither of these phases were observed experimentally, probably due to the hindrance of the pressure-driven phase transitions at room temperature. The theoretical study of the elastic behavior of the cubic bixbyite-type structure at high-pressure shows that amorphization above 22?GPa at room temperature might be caused by the mechanical instability of the cubic bixbyite-type structure which is theoretically predicted above 23.5?GPa.

Gomis, O., E-mail: osgohi@fis.upv.es; Vilaplana, R. [Centro de Tecnologías Físicas, MALTA Consolider Team, Universitat Politècnica de València, 46022 València (Spain); Santamaría-Pérez, D. [Departamento de Física Aplicada-ICMUV, MALTA Consolider Team, Universidad de Valencia, Edificio de Investigación, C/Dr. Moliner 50, 46100 Burjassot (Spain); Earth Sciences Department, University College London, Gower Street, WC1E 6BT London (United Kingdom); Ruiz-Fuertes, J. [Departamento de Física Aplicada-ICMUV, MALTA Consolider Team, Universidad de Valencia, Edificio de Investigación, C/Dr. Moliner 50, 46100 Burjassot (Spain); Geowissenschaften, Goethe-Universität, Altenhöferallee 1, 60438 Frankfurt am Main (Germany); Sans, J. A.; Manjón, F. J.; Mollar, M. [Instituto de Diseño para la Fabricación y Producción Automatizada, MALTA Consolider Team, Universitat Politècnica de València, 46022 València (Spain); and others

2014-10-07T23:59:59.000Z

149

The structural impact of commodity farm programs on farms in the Southern Texas High Plains  

E-Print Network [OSTI]

OPTIMIZATION OF A HYBRID SOLAR ENERGY COLLECTOR SYSTEM A Thesis by ALAN M. SHI NEMAN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree MASTER OF SCIENCE May 1981 Major Subject...: Mechanical Engineering 1981 Thesis 5558 THE STRUCTURAL IMPACT OP COMMODITY FARM PROGRAMS ON FARMS IN THE SOUTHERN TEXAS HIGH PLAINS A Thesis by CHRISTINA KAY SHIRLEY Submitted to the Graduate College of Texas AAM University in partial fulfillment...

Shirley, Christina Kay

1981-01-01T23:59:59.000Z

150

High-R Walls for New Construction Structural Performance: Wind Pressure Testing  

SciTech Connect (OSTI)

This technical report is focused primarily on laboratory testing that evaluates wind pressure performance characteristics for wall systems constructed with exterior insulating sheathing. This research and test activity will help to facilitate the ongoing use of non-structural sheathing options and provide a more in-depth understanding of how wall system layers perform in response to high wind perturbations normal to the surface.

DeRenzis, A.; Kochkin, V.

2013-01-01T23:59:59.000Z

151

A novel biomimetic approach to the design of high-performance ceramic/metal composites  

E-Print Network [OSTI]

In  particular,  ceramic?matrix  composites  (CMCs)  are M.   2006  Ceramic  and  metal  matrix  composites:  Routes 

Launey, Maximilien E.

2010-01-01T23:59:59.000Z

152

A novel biomimetic approach to the design of high-performance ceramic/metal composites  

E-Print Network [OSTI]

Rosso,  M.   2006  Ceramic  and  metal  matrix  composites: In  particular,  ceramic?matrix  composites  (CMCs)  are 

Launey, Maximilien E.

2010-01-01T23:59:59.000Z

153

Theory of factors limiting high gradient operation of warm accelerating structures  

SciTech Connect (OSTI)

This final report summarizes the research performed during the time period from 8/1/2010 to 7/31/2013. It consists of two parts describing our studies in two directions: (a) analysis of factors limiting operation of dielectric-loaded accelerating (DLA) structures where the main problem is the occurrence of multipactor on dielectric surfaces, and (b) studies of effects associated with either RF magnetic or RF electric fields which may cause the RF breakdown in high-gradient metallic accelerating structures. In the studies of DLA structures, at least, two accomplishments should be mentioned: the development of a 3D non-stationary, self-consistent code describing the multipactor phenomena and yielding very good agreement with some experimental data obtained in joint ANL/NRL experiments. In the metallic structures, such phenomena as the heating and melting of micro-particles (metallic dust) by RF electric and magnetic fields in single-shot and rep-rate regimes is analyzed. Also, such processes in micro-protrusions on the structure surfaces as heating and melting due to the field emitted current and the Nottingham effect are thoroughly investigated with the account for space charge of emitted current on the field emission from the tip.

Nusinovich, Gregory S. [University of Maryland; Antonsen, Thomas M. [University of Maryland; Kishek, Rami [University of Maryland

2014-07-25T23:59:59.000Z

154

Studies of local and intermediate range structure in crystalline and amorphouse materials at high pressure using high-energy x-rays.  

SciTech Connect (OSTI)

The method of high-energy total elastic X-ray scattering to determine the atomic structure of nanocrystalline, highly disordered, and amorphous materials is presented. The current state of the technique, its potential, and limitations are discussed with two successful studies on the pressure induced phase transition in mackinawite (FeS) and the high-pressure behavior of liquid gallium.

Ehm, L.; Antao, M.; Chen, J.; Locke, D. R.; Michel, F. M.; Martin, C. D.; Yu, T.; Lee, P. L.; Chupas, P. J.; Shastri, S. D.; Guo, Q.; Parise, J. B.; Stony Brook Univ.; BNL

2007-06-01T23:59:59.000Z

155

Studies of Local and Intermediate Range Structure in Crystalline and Amorphous Materials at High Pressure Using High-Energy X-rays  

SciTech Connect (OSTI)

The method of high-energy total elastic X-ray scattering to determine the atomic structure of nanocrystalline, highly disordered, and amorphous materials is presented. The current state of the technique, its potential, and limitations are discussed with two successful studies on the pressure induced phase transition in mackinawite (FeS) and the high-pressure behavior of liquid gallium.

Ehm,L.; Antao, S.; Chen, J.; Locke, D.; Michel, F.; Martin, D.; Yu, T.; Parise, J.; Lee, P.; et al.

2007-01-01T23:59:59.000Z

156

Ultra-High Performance Concrete with Tailored Properties Cementitious materials comprise a large portion of domestic structures and  

E-Print Network [OSTI]

Ultra-High Performance Concrete with Tailored Properties Cementitious materials comprise a large portion of domestic structures and infrastructure. The development of ultra-high performance concrete of buildings or structures to dynamic loading and fire. Overview of research program on UHPC or CEP (concrete

Li, Mo

157

Nano-sized structured layered positive electrode materials to enable high energy density and high rate capability lithium batteries  

DOE Patents [OSTI]

Nano-sized structured dense and spherical layered positive active materials provide high energy density and high rate capability electrodes in lithium-ion batteries. Such materials are spherical second particles made from agglomerated primary particles that are Li.sub.1+.alpha.(Ni.sub.xCo.sub.yMn.sub.z).sub.1-tM.sub.tO.sub.2-dR.sub.d- , where M is selected from can be Al, Mg, Fe, Cu, Zn, Cr, Ag, Ca, Na, K, In, Ga, Ge, V, Mo, Nb, Si, Ti, Zr, or a mixture of any two or more thereof, R is selected from F, Cl, Br, I, H, S, N, or a mixture of any two or more thereof, and 0.ltoreq..alpha..ltoreq.0.50; 0

Deng, Haixia; Belharouak, Ilias; Amine, Khalil

2012-10-02T23:59:59.000Z

158

High Pressure Phase Transformations in Heavy Rare Earth Metals and Connections to Actinide Crystal Structures  

SciTech Connect (OSTI)

High-pressure studies have been performed on heavy rare earth metals Terbium (Tb) to 155 GPa and Holmium (Ho) to 134 GPa in a diamond anvil cell at room temperature. The following crystal structure sequence was observed in both metals hcp {yields} Sm-type {yields} dhcp {yields} distorted fcc (hR-24) {yields} monoclinic (C2/m) with increasing pressure. The last transformation to a low symmetry monoclinic phase is accompanied by a volume collapse of 5 % for Tb at 51 GPa and a volume collapse of 3 % for Ho at 103 GPa. This volume collapse under high pressure is reminiscent of f-shell delocalization in light rare earth metal Cerium (Ce), Praseodymium (Pr), and heavy actinide metals Americium (Am) and Curium (Cm). The orthorhombic Pnma phase that has been reported in Am and Cm after f-shell delocalization is not observed in heavy rare earth metals under high pressures. (authors)

Vohra, Yogesh K.; Sangala, Bagvanth Reddy; Stemshorn, Andrew K. [Physics, University of Alabama at Birmingham (UAB), 310 Campbell Hall, 1300 University Boulevard, Birmingham, AL, 35294-1170 (United States); Hope, Kevin M. [Biology, Chemistry, and Mathematics, University of Montevallo, Harman Hall, Station 6480, Montevallo, AL, 35115 (United States)

2008-07-01T23:59:59.000Z

159

Solar wind suprathermal electron Stahl widths across high-speed stream structures  

SciTech Connect (OSTI)

Suprathermal electrons (100-1500 eV) observed in the solar wind typically show a strahl distribution, that is, a beam directed away from the Sun along the magnetic field direction. The strahl width observed at 1 AU is highly variable, ranging from 10-70 degrees. The obsenred finite width of the strahl results from the competition between beam focusing as the interplanetary magnetic field strength drops with distance from the Sun, and pitch-angle scattering as the beam interacts with the solar wind plasma in transit from the sun. Here we examine strahl width, observed with ACE SWEPAM across high-speed stream structures to investigate variations in electron scattering as a function of local plasma characteristics. We find that narrow strahls (less than 20 degrees wide), indicating reduced scattering, are observed within high-speed streams. Narrow strahls are also observed in both very low temperature solar wind, in association with ICMEs. Case studies of high-speed streams typically show the strahl narrowing at the leading edge of the stream. In some cases, the strahl narrows at the reverse shock or pressure wave, in other cases at the stream interface. The narrowing can either occur discontinuously or gradually over a period of hours. Within the high-speed wind, the strahl remains narrow for a period of hours to days, and then gradually broadens. The strahl width is roughly constant at all energies across these structures. For some fraction of high-speed streams, counterstreaming is associated with passage of the corotating interaction region. In these cases, we find the widths of the two counterstreaming beams frequently differ by more than 40 degrees. This dramatic difference in strahl width contrasts with observations in the solar wind as a whole, in which counterstreaming strahls typically differ in width by less than 20 degrees.

Skoug, Ruth M [Los Alamos National Laboratory; Steinberg, John T [Los Alamos National Laboratory; Goodrich, Katherine A [Los Alamos National Laboratory; Anderson, Brett R [DARTMUTH UNIV.

2011-01-03T23:59:59.000Z

160

High-temperature, structural disorder, phase transitions, and piezoelectric properties of GaPO{sub 4}  

SciTech Connect (OSTI)

Gallium orthophosphate was studied at high temperature up to 1303 K by total neutron scattering and 1173 K by piezoelectric measurements. Rietveld refinements at 1223 K confirm the stability of the structural distortion in the {alpha}-quartz-type phase with an average tilt angle {delta}=18.8 deg. at this temperature. In contrast, reverse Monte Carlo (RMC) refinements of total neutron scattering data indicate that, whereas the degree of structural disorder initially slowly varies over a very large temperature interval in the {alpha}-quartz-type phase, an increase in disorder is observed beginning above 1023 K. Piezoelectric measurements indicate that the quality factor (Q) of GaPO{sub 4} resonators remains stable up to this temperature above which the piezoelectric properties of the material degrade. This degradation can be correlated to the increase in structural disorder. RMC refinements indicate that the high-temperature {beta}-cristobalite-type phase at 1303 K is characterized by significant thermally induced disorder with oxygen atom density forming a continuous ring around the vector joining neighboring gallium and phosphorous atoms. Gallium phosphate may be expected to retain its piezoelectric properties up to within 200 K of the phase transition temperature and as a consequence be used in applications at temperatures slightly above 1000 K.

Haines, J.; Cambon, O.; Prudhomme, N.; Fraysse, G.; Keen, D. A.; Chapon, L. C.; Tucker, M. G. [Laboratoire de Physico-Chimie de la Matiere Condensee, UMR CNRS 5617, Universite Montpellier II, Place Eugene Bataillon, cc003, 34095 Montpellier cedex 5 (France); Department of Physics, Oxford University, Clarendon Laboratory, Parks Road, Oxford OX1 3PU (United Kingdom); and ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ (United Kingdom)

2006-01-01T23:59:59.000Z

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161

High-Resolution Structure of the Photosynthetic Mn4Ca Catalyst from X-ray Spectroscopy  

SciTech Connect (OSTI)

The application of high-resolution X-ray spectroscopy methods to study the photosynthetic water oxidizing complex, which contains a unique hetero-nuclear catalytic Mn4Ca cluster, are described. Issues of X-ray damage especially at the metal sites in the Mn4Ca cluster are discussed. The structure of the Mn4Ca catalyst at high-resolution which has so far eluded attempts of determination by X-ray diffraction, EXAFS and other spectroscopic techniques has been addressed using polarized EXAFS techniques applied to oriented PS II membrane preparations and PS II single crystals. A review of how the resolution of traditional EXAFS techniques can be improved, using methods such as range-extended EXAFS is presented, and the changes that occur in the structure of the cluster as it advances through the catalytic cycle are described. X-ray absorption and emission techniques (XANES and K? emission) have been used earlier to determine the oxidation states of the Mn4Ca cluster, and in this report we review the use of X-ray resonant Raman spectroscopy to understand the electronic structure of the Mn4Ca cluster as it cycles through the intermediate S-states.

Yachandra, Vittal; Yano, Junko; Kern, Jan; Pushkar, Yulia; Sauer, Kenneth; Glatzel, Pieter; Bergmann, Uwe; Messinger, Johannes; Zouni, Athina; Yachandra, Vittal K.

2007-08-01T23:59:59.000Z

162

High Efficiency Solar-based Catalytic Structure for CO{sub 2} Reforming  

SciTech Connect (OSTI)

Throughout this project, we developed and optimized various photocatalyst structures for CO{sub 2} reforming into hydrocarbon fuels and various commodity chemical products. We also built several closed-loop and continuous fixed-bed photocatalytic reactor system prototypes for a larger-scale demonstration of CO{sub 2} reforming into hydrocarbons, mainly methane and formic acid. The results achieved have indicated that with each type of reactor and structure, high reforming yields can be obtained by refining the structural and operational conditions of the reactor, as well as by using various sacrificial agents (hole scavengers). We have also demonstrated, for the first time, that an aqueous solution containing acid whey (a common bio waste) is a highly effective hole scavenger for a solar-based photocatalytic reactor system and can help reform CO{sub 2} into several products at once. The optimization tasks performed throughout the project have resulted in efficiency increase in our conventional reactors from an initial 0.02% to about 0.25%, which is 10X higher than our original project goal. When acid whey was used as a sacrificial agent, the achieved energy efficiency for formic acid alone was ~0.4%, which is 16X that of our original project goal and higher than anything ever reported for a solar-based photocatalytic reactor. Therefore, by carefully selecting sacrificial agents, it should be possible to reach energy efficiency in the range of the photosynthetic efficiency of typical crop and biofuel plants (1-3%).

Menkara, Hisham

2013-09-30T23:59:59.000Z

163

Charge-distribution effect of imaging molecular structure by high-order above-threshold ionization  

SciTech Connect (OSTI)

Using a triatomic molecular model, we show that the interference pattern in the high-order above-threshold ionization (HATI) spectrum depends dramatically on the charge distribution of the molecular ion. Therefore the charge distribution can be considered a crucial factor for imaging a molecular geometric structure. Based on this study, a general destructive interference formula for each above-threshold ionization channel is obtained for a polyatomic molecule concerning the positions and charge values of each nuclei. Comparisons are made for the HATI spectra of CO{sub 2}, O{sub 2}, NO{sub 2}, and N{sub 2}. These results may shed light on imaging complex molecular structure by the HATI spectrum.

Wang Bingbing; Fu Panming [Laboratory of Optical Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China); Guo Yingchun [Department of Physics, State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 (China); Zhang Bin; Zhao Zengxiu [Department of Physics, National University of Defense Technology, Changsha 410073 (China); Yan Zongchao [Department of Physics, University of New Brunswick, Fredericton, New Brunswick E3B 5A3 (Canada)

2010-10-15T23:59:59.000Z

164

High thermoelectric performance BiSbTe alloy with unique low-dimensional structure  

SciTech Connect (OSTI)

We report a detailed description of an innovative route of a melt spinning (MS) technique combined with a subsequent spark plasma sintering process in order to obtain high performance p-type Bi{sub 0.52}Sb{sub 1.48}Te{sub 3} bulk material, which possesses a unique low-dimensional structure. The unique structure consists of an amorphous structure, 5-15 nm fine nanocrystalline regions, and coherent interfaces between the resulting nanocrystalline regions. Measurements of the thermopower, electrical conductivity, and thermal conductivity have been performed over a range of temperature of 300-400 K. We found that MS technique can give us considerable control over the resulting nanostructure with good thermal stability during the temperature range of 300-400 K and this unique structure can effectively adjust the transport of phonons and electrons, in a manner such that it is beneficial to the overall thermoelectric performance of the material, primarily a reduction in the lattice thermal conductivity. Subsequently, this results in a maximum figure of merit ZT value of 1.56 at 300 K for p-type Bi{sub 0.52}Sb{sub 1.48}Te{sub 3} bulk material. This ZT value is over a 50% improvement of that of the state of the art commercial Bi{sub 2}Te{sub 3} materials. We also report results of thermal cycling of this material for over one hundred cycles between 300-400 K. Our work offers an innovative route for developing high performance bismuth telluride based alloys and devices, which have even broader prospects for commercial applications. This technique may also be applicable to other thermoelectric materials.

Xie Wenjie [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China); Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634-0978 (United States); Tang Xinfeng; Yan Yonggao; Zhang Qingjie [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China); Tritt, Terry M. [Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634-0978 (United States)

2009-06-01T23:59:59.000Z

165

Synthesis, Structure, and Metalation of Two New Highly Porous Zirconium Metal?Organic Frameworks  

SciTech Connect (OSTI)

Three new metal-organic frameworks [MOF-525, Zr{sub 6}O{sub 4}(OH){sub 4}(TCPP-H{sub 2}){sub 3}; MOF-535, Zr{sub 6}O{sub 4}(OH){sub 4}(XF){sub 3}; MOF-545, Zr{sub 6}O{sub 8}(H{sub 2}O){sub 8}(TCPP-H{sub 2}){sub 2}, where porphyrin H{sub 4}-TCPP-H{sub 2} = (C{sub 48}H{sub 24}O{sub 8}N{sub 4}) and cruciform H{sub 4}-XF = (C{sub 42}O{sub 8}H{sub 22})] based on two new topologies, ftw and csq, have been synthesized and structurally characterized. MOF-525 and -535 are composed of Zr{sub 6}O{sub 4}(OH){sub 4} cuboctahedral units linked by either porphyrin (MOF-525) or cruciform (MOF-535). Another zirconium-containing unit, Zr{sub 6}O{sub 8}(H{sub 2}O){sub 8}, is linked by porphyrin to give the MOF-545 structure. The structure of MOF-525 was obtained by analysis of powder X-ray diffraction data. The structures of MOF-535 and -545 were resolved from synchrotron single-crystal data. MOF-525, -535, and -545 have Brunauer-Emmett-Teller surface areas of 2620, 1120, and 2260 m{sup 2}/g, respectively. In addition to their large surface areas, both porphyrin-containing MOFs are exceptionally chemically stable, maintaining their structures under aqueous and organic conditions. MOF-525 and -545 were metalated with iron(III) and copper(II) to yield the metalated analogues without losing their high surface area and chemical stability.

Morris, William; Volosskiy, Boris; Demir, Selcuk; Gándara, Felipe; McGrier, Psaras L.; Furukawa, Hiroyasu; Cascio, Duilio; Stoddart, J. Fraser; Yaghi, Omar M. (UCLA); (NWU)

2012-10-24T23:59:59.000Z

166

High performance vertical tunneling diodes using graphene/hexagonal boron nitride/graphene hetero-structure  

SciTech Connect (OSTI)

A tunneling rectifier prepared from vertically stacked two-dimensional (2D) materials composed of chemically doped graphene electrodes and hexagonal boron nitride (h-BN) tunneling barrier was demonstrated. The asymmetric chemical doping to graphene with linear dispersion property induces rectifying behavior effectively, by facilitating Fowler-Nordheim tunneling at high forward biases. It results in excellent diode performances of a hetero-structured graphene/h-BN/graphene tunneling diode, with an asymmetric factor exceeding 1000, a nonlinearity of ?40, and a peak sensitivity of ?12?V{sup ?1}, which are superior to contending metal-insulator-metal diodes, showing great potential for future flexible and transparent electronic devices.

Hwan Lee, Seung; Lee, Jia; Ho Ra, Chang; Liu, Xiaochi; Hwang, Euyheon [Samsung-SKKU Graphene Center (SSGC), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Department of Nano Science and Technology, SKKU Advanced Institute of Nano-Technology (SAINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Sup Choi, Min [Department of Nano Science and Technology, SKKU Advanced Institute of Nano-Technology (SAINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Center for Human Interface Nano Technology (HINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Hee Choi, Jun [Frontier Research Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics Co., Ltd., Yongin, Gyeonggi-do 446-711 (Korea, Republic of); Zhong, Jianqiang; Chen, Wei [Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542 (Singapore); Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore); Jong Yoo, Won, E-mail: yoowj@skku.edu [Samsung-SKKU Graphene Center (SSGC), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Department of Nano Science and Technology, SKKU Advanced Institute of Nano-Technology (SAINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Center for Human Interface Nano Technology (HINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of)

2014-02-03T23:59:59.000Z

167

Formation of surface nano-structures by plasma expansion induced by highly charged ions  

SciTech Connect (OSTI)

Slow highly charged ions (HCIs) create surface nano-structures (nano-hillocks) on the quartz surface. The formation of hillocks was only possible by surpassing a potential energy threshold. By using the plasma expansion approach with suitable hydrodynamic equations, the creation mechanism of the nano-hillocks induced by HCIs is explained. Numerical analysis reveal that within the nanoscale created plasma region, the increase of the temperature causes an increase of the self-similar solution validity domain, and consequently the surface nano-hillocks become taller. Furthermore, the presence of the negative (positive) nano-dust particles would lead to increase (decrease) the nano-hillocks height.

Moslem, W. M. [Department of Physics, Faculty of Science, Port Said University, Port Said (Egypt); Centre for Theoretical Physics, The British University in Egypt (BUE), El-Shorouk City, Cairo (Egypt) and International Centre for Advanced Studies in Physical Sciences, Faculty of Physics and Astronomy, Ruhr University Bochum, D-44780 Bochum (Germany); El-Said, A. S. [Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261 (Saudi Arabia); Nuclear and Radiation Physics Laboratory, Physics Department, Faculty of Science, Mansoura University, 35516 Mansoura (Egypt) and Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Bautzner Landstr. 128, 01328 Dresden (Germany)

2012-12-15T23:59:59.000Z

168

Improved Structure and Fabrication of Large, High-Power KHPS Rotors - Final Scientific/Technical Report  

SciTech Connect (OSTI)

Verdant Power, Inc, working in partnership with the National Renewable Energy Laboratory (NREL), Sandia National Laboratories (SNL), and the University of Minnesota St. Anthony Falls Laboratory (SAFL), among other partners, used evolving Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) models and techniques to improve the structure and fabrication of large, high-power composite Kinetic Hydropower System (KHPS) rotor blades. The objectives of the project were to: design; analyze; develop for manufacture and fabricate; and thoroughly test, in the lab and at full scale in the water, the improved KHPS rotor blade.

Corren, Dean [Verdant Power, Inc.; Colby, Jonathan [Verdant Power, Inc.; Adonizio, Mary Ann [Verdant Power, Inc.

2013-01-29T23:59:59.000Z

169

Modeling the Structural Response from a Propagating High Explosive Using Smooth Particle Hydrodynamics  

SciTech Connect (OSTI)

This report primarily concerns the use of two massively parallel finite element codes originally written and maintained at Lawrence Livermore National Laboratory. ALE3D is an explicit hydrodynamics code commonly employed to simulate wave propagation from high energy scenarios and the resulting interaction with nearby structures. This coupled response ensures that a structure is accurately applied with a blast loading varying both in space and time. Figure 1 illustrates the radial outward propagation of a pressure wave due to a center detonated spherical explosive originating from the lower left. The radial symmetry seen in this scenario is lost when instead a cylindrocal charge is detonated. Figure 2 indicates that a stronger, faster traveling pressure wave occurs in the direction of the normal axis to the cylinder. The ALE3D name is derived because of the use of arbitrary-Lagrange-Eulerian elements in which the mesh is allowed to advect; a process through which the mesh is modified to alleviate tanlging and general mesh distortion often cuased by high energy scenarios. The counterpart to an advecting element is a Lagrange element, whose mesh moves with the material. Ideally all structural components are kept Lagrange as long as possible to preserve accuracy of material variables and minimize advection related errors. Advection leads to mixed zoning, so using structural Lagrange elements also improves the visualization when post processing the results. A simplified representation of the advection process is shown in Figure 3. First the mesh is distorted due to material motion during the Lagrange step. The mesh is then shifted to an idealized and less distorted state to prevent irregular zones caused by the Lagrange motion. Lastly, the state variables are remapped to the elements of the newly constructed mesh. Note that Figure 3 represents a purely Eulerian mesh relaxation because the mesh is relocated back to the pre-Lagrange position. This is the case when the material flows through a still mesh. This is not typically done in an ALE3D analysis, especially if Lagrange elements exist. Deforming Lagrange elements would certainly tangle with a Eulerian mesh eventually. The best method in this case is to have an advecting mesh positioned as some relaxed version of the pre and post Lagrange step; this gives the best opportunity of modeling a high energy event with a combination of Lagrange and ALE elements. Dyne3D is another explicit dynamic analysis code, ParaDyn being the parallel version. ParaDyn is used for predicting the transient response of three dimensional structures using Lagrangian solid mechanics. Large deformation and mesh tangling is often resolved through the use of an element deletion scheme. This is useful to accommodate component failure, but if it is done purely as a means to preserve a useful mesh it can lead to problems because it does not maintain continuity of the material bulk response. Whatever medium exists between structural components is typically not modeled in ParaDyn. Instead, a structure either has a known loading profile applied or given initial conditions. The many included contact algorithms can calculate the loading response of materials if and when they collide. A recent implementation of an SPH module in which failed or deleted material nodes are converted to independent particles is currently being utilized for a variety of spall related problems and high velocity impact scenarios. Figure 4 shows an example of a projectile, given an initial velocity, and how it fails the first plate which generates SPH particles which then interact with and damage the second plate.

Margraf, J

2012-06-12T23:59:59.000Z

170

High resolution interface nanochemistry and structure: Final project report, December 1, 1993--February 28, 1997  

SciTech Connect (OSTI)

Work includes studies of interface and grain boundary chemistry and structure in silicon nitride matrix/silicon carbide whisker composites, and in monolithic silicon nitride and silicon carbide synthesized by several different methods. Off-stoichiometric, impurity, and sintering aid elemental distributions in these materials (and other ceramics) have been of great interest because of expected effects on properties but these distributions have proven very difficult to measure because the spatial resolution required is high. The authors made a number of these measurements for the first time, using techniques and instrumentation developed here. Interfaces between metals and SiC are the basis for important metal matrix composites and contacts for high temperature SiC-based solid state electronic devices. The authors have investigated ultrapure interfaces between Ti, Hf, Ti-Hf alloys, Pt, and Co and Si-terminated (0001) 6H SiC single crystals for the first time.

Carpenter, R.W.; Lin, S.H.

1997-02-27T23:59:59.000Z

171

Coherent structures, intermittent turbulence, and dissipation in high-temperature plasmas  

SciTech Connect (OSTI)

An unsolved problem in plasma turbulence is how energy is dissipated at small scales. Particle collisions are too infrequent in hot plasmas to provide the necessary dissipation. Simulations either treat the fluid scales and impose an ad hoc form of dissipation (e.g., resistivity) or consider dissipation arising from resonant damping of small amplitude disturbances where damping rates are found to be comparable to that predicted from linear theory. Here, we report kinetic simulations that span the macroscopic fluid scales down to the motion of electrons. We find that turbulent cascade leads to generation of coherent structures in the form of current sheets that steepen to electron scales, triggering strong localized heating of the plasma. The dominant heating mechanism is due to parallel electric fields associated with the current sheets, leading to anisotropic electron and ion distributions which can be measured with NASA's upcoming Magnetospheric Multiscale mission. The motion of coherent structures also generates waves that are emitted into the ambient plasma in form of highly oblique compressional and shear Alfven modes. In 3D, modes propagating at other angles can also be generated. This indicates that intermittent plasma turbulence will in general consist of both coherent structures and waves. However, the current sheet heating is found to be locally several orders of magnitude more efficient than wave damping and is sufficient to explain the observed heating rates in the solar wind.

Karimabadi, H.; Roytershteyn, V. [Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093 (United States); Wan, M.; Matthaeus, W. H.; Wu, P.; Shay, M. [University of Delaware, Department of Physics and Astronomy, Newark, Delaware 19716 (United States); Daughton, W.; Nakamura, T. K. M. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Loring, B. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Borovsky, J. [Space Science Institute, Boulder, Colorado 80301 (United States); Leonardis, E.; Chapman, S. C. [Centre for Fusion, Space and Astrophysics, University of Warwick, Coventry, CV4 7AL (United Kingdom)

2013-01-15T23:59:59.000Z

172

Substrate Structures For Growth Of Highly Oriented And/Or Epitaxial Layers Thereon  

DOE Patents [OSTI]

A composite substrate structure including a substrate, a layer of a crystalline metal oxide or crystalline metal oxynitride material upon the substrate, a layer of an oriented cubic oxide material having a rock-salt-like structure upon the crystalline metal oxide or crystalline metal oxynitride material layer is provided together with additional layers such as one or more layers of a buffer material upon the oriented cubic oxide material layer. Jc's of 2.3×106 A/cm2 have been demonstrated with projected Ic's of 320 Amperes across a sample 1 cm wide for a superconducting article including a flexible polycrystalline metallic substrate, an inert oxide material layer upon the surface of the flexible polycrystalline metallic substrate, a layer of a crystalline metal oxide or crystalline metal oxynitride material upon the layer of the inert oxide material, a layer of an oriented cubic oxide material having a rock-salt-like structure upon the crystalline metal oxide or crystalline metal oxynitride material layer, a layer of a buffer material upon the oriented cubic oxide material layer, and, a top-layer of a high temperature superconducting material upon the layer of a buffer material.

Arendt, Paul N. (Los Alamos, NM); Foltyn, Stephen R. (Los Alamos, NM); Groves, James R. (Los Alamos, NM); Jia, Quanxi (Los Alamos, NM)

2005-07-26T23:59:59.000Z

173

Evaluation of Tavorite-Structured Cathode Materials for Lithium-Ion Batteries Using High-Throughput Computing  

E-Print Network [OSTI]

Cathode materials with structure similar to the mineral tavorite have shown promise for use in lithium-ion batteries, but this class of materials is relatively unexplored. We use high-throughput density-functional-theory ...

Mueller, Tim

174

High-pressure X-ray absorption fine structure in the diamond anvil cell and its applications in geological materials  

E-Print Network [OSTI]

nano- polycrystalline diamond instead of single crystal anvils, the influence of diamond diffractionHigh-pressure X-ray absorption fine structure in the diamond anvil cell and its applications fine structure in the diamond anvil cell and its applications in geological materials Xinguo Hong1

Duffy, Thomas S.

175

Probing Structural Dynamics with High Spatial and Temporal Resolution Research Team: Nigel Browning, James Evans, Patricia Abellan, Russell Tonkyn  

E-Print Network [OSTI]

Probing Structural Dynamics with High Spatial and Temporal Resolution Research Team: Nigel Browning of the structural dynamics that occur on the µs-ns timescale We will make use of a unique aberration-corrected dynamic TEM (DTEM), where a photoemission source will enable these time-resolved images to be obtained at

176

Using high-order methods on adaptively refined block-structured meshes - discretizations, interpolations, and filters.  

SciTech Connect (OSTI)

Block-structured adaptively refined meshes (SAMR) strive for efficient resolution of partial differential equations (PDEs) solved on large computational domains by clustering mesh points only where required by large gradients. Previous work has indicated that fourth-order convergence can be achieved on such meshes by using a suitable combination of high-order discretizations, interpolations, and filters and can deliver significant computational savings over conventional second-order methods at engineering error tolerances. In this paper, we explore the interactions between the errors introduced by discretizations, interpolations and filters. We develop general expressions for high-order discretizations, interpolations, and filters, in multiple dimensions, using a Fourier approach, facilitating the high-order SAMR implementation. We derive a formulation for the necessary interpolation order for given discretization and derivative orders. We also illustrate this order relationship empirically using one and two-dimensional model problems on refined meshes. We study the observed increase in accuracy with increasing interpolation order. We also examine the empirically observed order of convergence, as the effective resolution of the mesh is increased by successively adding levels of refinement, with different orders of discretization, interpolation, or filtering.

Ray, Jaideep; Lefantzi, Sophia; Najm, Habib N.; Kennedy, Christopher A.

2006-01-01T23:59:59.000Z

177

Adaptive AFM scan speed control for high aspect ratio fast structure tracking  

SciTech Connect (OSTI)

Improved imaging rates in Atomic Force Microscopes (AFM) are of high interest for disciplines such as life sciences and failure analysis of semiconductor wafers, where the sample topology shows high aspect ratios. Also, fast imaging is necessary to cover a large surface under investigation in reasonable times. Since AFMs are composed of mechanical components, they are associated with comparably low resonance frequencies that undermine the effort to increase the acquisition rates. In particular, high and steep structures are difficult to follow, which causes the cantilever to temporarily loose contact to or crash into the sample. Here, we report on a novel approach that does not affect the scanner dynamics, but adapts the lateral scanning speed of the scanner. The controller monitors the control error signal and, only when necessary, decreases the scan speed to allow the z-piezo more time to react to changes in the sample's topography. In this case, the overall imaging rate can be significantly increased, because a general scan speed trade-off decision is not needed and smooth areas are scanned fast. In contrast to methods trying to increase the z-piezo bandwidth, our method is a comparably simple approach that can be easily adapted to standard systems.

Ahmad, Ahmad; Schuh, Andreas; Rangelow, Ivo W. [Department of Microelectronic and Nanoelectronic Systems, Faculty of Electrical Engineering and Information Technology Ilmenau University of Technology, Gustav-Kirchhoffstr. 1, 98684 Ilmenau (Germany)

2014-10-15T23:59:59.000Z

178

Optimization of Cricket-inspired, Biomimetic Artificial Hair Sensors for Flow Sensing  

E-Print Network [OSTI]

High density arrays of artificial hair sensors, biomimicking the extremely sensitive mechanoreceptive filiform hairs found on cerci of crickets have been fabricated successfully. We assess the sensitivity of these artificial sensors and present a scheme for further optimization addressing the deteriorating effects of stress in the structures. We show that, by removing a portion of chromium electrodes close to the torsional beams, the upward lift at the edges of the membrane due to the stress, will decrease hence increase the sensitivity.

Izadi, N; Floris, J; Krijnen, G

2008-01-01T23:59:59.000Z

179

Phase structure of an Abelian two-Higgs model and high temperature superconductors  

E-Print Network [OSTI]

We study the phase structure of a three dimensional Abelian Higgs model with singly- and doubly-charged scalar fields coupled to a compact Abelian gauge field. The model is pretending to describe systems of strongly correlated electrons such as high-Tc superconductivity in overdoped regime and exotic phases supporting excitations with fractionalized quantum numbers. We identify the Fermi liquid, the spin gap, the superconductor and the strange metallic phases in which densities and properties of holon and spinon vortices and monopoles are explored. The phase diagram in the 3D coupling space is predicted. We show that at sufficiently strong gauge coupling the spinon-pair and holon condensation transitions merge together and become, unexpectedly, first order.

M. N. Chernodub; E. -M. Ilgenfritz; A. Schiller

2005-12-06T23:59:59.000Z

180

Highly charged ions for atomic clocks and search for variation of the fine structure constant  

E-Print Network [OSTI]

We review a number of highly charged ions which have optical transitions suitable for building extremely accurate atomic clocks. This includes ions from Hf$^{12+}$ to U$^{34+}$, which have the $4f^{12}$ configuration of valence electrons, the Ir$^{17+}$ ion, which has a hole in almost filled $4f$ subshell, the Ho$^{14+}$, Cf$^{15+}$, Es$^{17+}$ and Es$^{16+}$ ions. Clock transitions in most of these ions are sensitive to variation of the fine structure constant, $\\alpha$ ($\\alpha = e^2/\\hbar c$). E.g., californium and einsteinium ions have largest known sensitivity to $\\alpha$-variation while holmium ion looks as the most suitable ion for experimental study. We study the spectra of the ions and their features relevant to the use as frequency standards.

Dzuba, V A

2015-01-01T23:59:59.000Z

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


181

Highly Insulating Glazing Systems using Non-Structural Center Glazing Layers  

SciTech Connect (OSTI)

Three layer insulating glass units with two low-e coatings and an effective gas fill are known to be highly insulating, with center-of-glass U-factors as low as 0.57 W/m{sup 2}-K (0.10 Btu/h-ft{sup 2}- F). Such units have historically been built with center layers of glass or plastic which extend all the way through the spacer system. This paper shows that triple glazing systems with non-structural center layers which do not create a hermetic seal at the edge have the potential to be as thermally efficient as standard designs, while potentially removing some of the production and product integration issues that have discouraged the use of triples.

Kohler, Christian; Arasteh, Dariush; Goudey, Howdy; Kohler, Christian

2008-04-09T23:59:59.000Z

182

Lubricant-infused micro/nano-structured surfaces with tunable dynamic omniphobicity at high temperatures  

SciTech Connect (OSTI)

Omniphobic surfaces that can repel fluids at temperatures higher than 100 #2;°C are rare. Most stateof- the-art liquid-repellent materials are based on the lotus effect, where a thin air layer is maintained throughout micro/nanotextures leading to high mobility of liquids. However, such behavior eventually fails at elevated temperatures when the surface tension of test liquids decreases significantly. Here, we demonstrate a class of lubricant-infused structured surfaces that can maintain a robust omniphobic state even for low-surface-tension liquids at temperatures up to at least 200 °#2;C. We also demonstrate how liquid mobility on such surfaces can be tuned by a factor of 1000.

Daniel, Daniel; Max, Mankin N.; Belisle, Rebecca A.; Wong, Tak-Sing; Aizenberg, Joanna

2013-06-12T23:59:59.000Z

183

High-temperature stability, structure and thermoelectric properties of CaMn1xNbxO3 phases  

E-Print Network [OSTI]

technologies such as solid oxide fuel cells, thermoelectric (TE) modules and high-temperature superconductorsHigh-temperature stability, structure and thermoelectric properties of CaMn1Ã?xNbxO3 phases Laura diffraction and electron diffraction data. Thermogravi- metric heating/cooling studies showed a reversible

184

The Double Seismic Zone of the Nazca Plate in Northern Chile: High Resolution Velocity Structure, Petrological Implications and  

E-Print Network [OSTI]

The Double Seismic Zone of the Nazca Plate in Northern Chile: High Resolution Velocity Structure presents an interdisciplinary study of the Northern Chile Double Seismic Zone. First, a high resolution method. The double seismic zone (DSZ) is observed between 80 and 140 km depth and the two seismic planes

Paris-Sud XI, Université de

185

Structure of W3(OH) from Very High Spectral Resolution Observations of 5 Centimeter OH Masers  

E-Print Network [OSTI]

Recent studies of methanol and ground-state OH masers at very high spectral resolution have shed new light on small-scale maser processes. The nearby source W3(OH), which contains numerous bright masers in several different transitions, provides an excellent laboratory for high spectral resolution techniques. We present a model of W3(OH) based on EVN observations of the rotationally-excited 6030 and 6035 MHz OH masers taken at 0.024 km/s spectral resolution. The 6.0 GHz masers are becoming brighter with time and show evidence for tangential proper motions. We confirm the existence of a region of magnetic field oriented toward the observer to the southeast and find another such region to the northeast in W3(OH), near the champagne flow. The 6.0 GHz masers trace the inner edge of a counterclockwise rotating torus feature. Masers at 6030 MHz are usually a factor of a few weaker than at 6035 MHz but trace the same material. Velocity gradients of nearby Zeeman components are much more closely correlated than in the ground state, likely due to the smaller spatial separation between Zeeman components. Hydroxyl maser peaks at very long baseline interferometric resolution appear to have structure on scales both smaller than that resolvable as well as on larger scales.

Vincent L. Fish; Loránt O. Sjouwerman

2007-06-22T23:59:59.000Z

186

A Biomimetic Approach to Robot Table Tennis Katharina Mlling1,2, Jens Kober1,2, Jan Peters1,2  

E-Print Network [OSTI]

and on a real anthropomorphic seven degrees of freedom Barrett WAMTM robot arm. keywords biomimetic robotics approaches, we use an anthropomorphic robot arm with seven degrees of freedom (DoFs) and concentrate is to generate human-like striking movements on an anthropomorphic robot arm with seven DoFs. We investigate

187

Synthesis, structural characterization and high pressure phase transitions of monolithium hydronium sulfate  

SciTech Connect (OSTI)

A three dimensional lithium hydronium sulfate LiSO{sub 4}{center_dot}H{sub 3}O [1], [space group Pna2{sub 1}a=8.7785(12) A, b=9.1297(12) A, c=5.2799(7) A, V=423.16(10) A{sup 3}] was synthesized via solvothermal methods using 1,5-naphthalenedisulfonic acid (1,5-NSA) as the source of sulfate ions. The structure of [1], determined by single crystal X-ray diffraction techniques, consists of corner sharing LiO{sub 4} and SO{sub 4} tetrahedra, forming an anionic 3-D open framework that is charge balanced by hydronium ions positioned within channels running along [001] and forming strong H-bonding with the framework oxygen atoms. Compound [1] undergoes two reversible phase transitions, involving reorientation of SO{sub 4}{sup 2-} ions at pressures of approximately 2.5 and 5 GPa at room temperature, as evident from characteristic discontinuous frequency drops in the {nu}{sub 1} mode of the Raman spectra. Additionally, compound [1] forms dense {beta}-lithium sulfate at 300 Degree-Sign C, as evident from temperature dependent powder XRD and combined reversible TGA-DSC experiments. - Graphical abstract: Left: View of corner-shared LiO{sub 4} and SO{sub 4} tetrahedra along [001] direction with hydronium ions situated in the channels. Right: (a) Photograph of the loaded DAC (b) Ambient pressure Raman spectrum of compound [1] (c) Evolution of the {nu}{sub 1} mode with the increasing and decreasing pressure indicating transitions to high-pressure phases at {approx}2.5 (red curves) and {approx}5 GPa (blue curves) and at {approx}3.5 GPa upon decompression. Highlights: Black-Right-Pointing-Pointer A 3-D lithium hydronium sulfate is synthesized by solvothermal methods. Black-Right-Pointing-Pointer Two high pressure phase transition occurs due to rotation of sulfate groups. Black-Right-Pointing-Pointer The framework undergoes a high temperature structural transformation, to form {beta}-Li{sub 2}SO{sub 4} phase.

Banerjee, Debasis, E-mail: debasis.banerjee@stonybrook.edu [Department of Chemistry, Stony Brook University, Stony Brook 11794-3400 (United States); Plonka, Anna M. [Department of Geosciences, Stony Brook University, Stony Brook 11794-2100 (United States); Kim, Sun Jin [Nano-Materials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650 (Korea, Republic of); Xu Wenqian [Department of Geosciences, Stony Brook University, Stony Brook 11794-2100 (United States); Parise, John B. [Department of Chemistry, Stony Brook University, Stony Brook 11794-3400 (United States); Mineral Physics Institute, Stony Brook University, Stony Brook, NY 11790-2100 (United States)

2013-01-15T23:59:59.000Z

188

Experimental Study of the Effect of Beam Loading on RF Breakdown Rate in CLIC High-Gradient Accelerating Structures  

E-Print Network [OSTI]

RF breakdown is a key issue for the multi-TeV highluminosity e+e- Compact Linear Collider (CLIC). Breakdowns in the high-gradient accelerator structures can deflect the beam and decrease the desired luminosity. The limitations of the accelerating structures due to breakdowns have been studied so far without a beam present in the structure. The presence of the beam modifies the distribution of the electrical and magnetic field distributions, which determine the breakdown rate. Therefore an experiment has been designed for high power testing a CLIC prototype accelerating structure with a beam present in the CLIC Test Facility (CTF3). A special beam line allows extracting a beam with nominal CLIC beam current and duration from the CTF3 linac. The paper describes the beam optics design for this experimental beam line and the commissioning of the experiment with beam.

Tecker, F; Kelisani, M; Doebert, S; Grudiev, A; Quirante, J; Riddone, G; Syratchev, I; Wuensch, W; Kononenko, O; Solodko, A; Lebet, S

2013-01-01T23:59:59.000Z

189

Laser spectroscopy of hyperfine structure in highly-charged ions: a test of QED at high fields  

E-Print Network [OSTI]

An overview is presented of laser spectroscopy experiments with cold, trapped, highly-charged ions, which will be performed at the HITRAP facility at GSI in Darmstadt (Germany). These high-resolution measurements of ground state hyperfine splittings will be three orders of magnitude more precise than previous measurements. Moreover, from a comparison of measurements of the hyperfine splittings in hydrogen- and lithium-like ions of the same isotope, QED effects at high electromagnetic fields can be determined within a few percent. Several candidate ions suited for these laser spectroscopy studies are presented.

D. F. A. Winters; M. Vogel; D. M. Segal; R. C. Thompson; W. Noertershaeuser

2007-04-26T23:59:59.000Z

190

High-resolution Solution Structure of the Catalytic Fragment of Human Collagenase-3 (MMP-13)  

E-Print Network [OSTI]

X-ray structure indicates that the major differences between the structures is associated with loop-1 and MMP-13 exhibit different dynamic properties for the active-site loop and the structural Zn-HCACO, constant time Ca H proton to a-carbon to carbonyl correlation and HACAHB, Ca H proton to a-carbon to Cb H

Powers, Robert

191

On the origin and highly likely completeness of single-domain protein structures  

E-Print Network [OSTI]

for review October 27, 2005) The size and origin of the protein fold universe is of fundamental and practical, with the protein fold universe arising from compact conformations of hydrogen-bonded, second- ary structures of protein structure and function. evolution Protein Data Bank protein folding protein structure prediction

Zhang, Yang

192

High-resolution spectra of solar magnetic features. I. Analysis of penumbral fine structure  

SciTech Connect (OSTI)

The Swedish Vacuum Telescope on La Palma was used to obtain spectra of the magnetic-sensitive Fe I 630.25 nm line under conditions of exceptional angular resolution (0.32 arcsec) and high spectral resolution (FWHM 2.5 pm). Simultaneous 0.02 s CCD exposures of both the spectrum and the slit-jaw image effectively 'freeze' the atmospheric seeing motions and permit unambiguous identification of the spectra of the various penumbral structures. These spectra reveal the magnetic field strength in penumbral filaments through an intensity fit of the Zeeman splitting of this line. The observations show that: (1) the field strength varies from about 2100 G near the umbra-penumbra boundary to about 900 G at the outer edge of the penumbra, (2) the observed fluctuation of penumbral magnetic field is much less dramatic than the fluctuation in intensity, (3) there is a suggestion of a rapid change in field inclination between some light and dark filaments near the edge of the penumbra, and (4) there is no obvious correlation between Doppler shift (in part due to the Evershed flow) and filament intensity. 43 refs.

Lites, B.W.; Skumanich, A.; Scharmer, G.B. (High Altitude Observatory, Boulder, CO (USA) Kungliga Svenska Vetenskapsakademien, Stockholm (Sweden))

1990-05-01T23:59:59.000Z

193

Effect of buffer structures on AlGaN/GaN high electron mobility transistor reliability  

SciTech Connect (OSTI)

AlGaN/GaN high electron mobility transistors (HEMTs) with three different types of buffer layers, including a GaN/AlGaN composite layer, or 1 or 2 lm GaN thick layers, were fabricated and their reliability compared. The HEMTs with the thick GaN buffer layer showed the lowest critical voltage (Vcri) during off-state drain step-stress, but this was increased by around 50% and 100% for devices with the composite AlGaN/GaN buffer layers or thinner GaN buffers, respectively. The Voff - state for HEMTs with thin GaN and composite buffers were 100 V, however, this degraded to 50 60V for devices with thick GaN buffers due to the difference in peak electric field near the gate edge. A similar trend was observed in the isolation breakdown voltage measurements, with the highest Viso achieved based on thin GaN or composite buffer designs (600 700 V), while a much smaller Viso of 200V was measured on HEMTs with the thick GaN buffer layers. These results demonstrate the strong influence of buffer structure and defect density on AlGaN/GaN HEMT performance and reliability.

Liu, L. [University of Florida, Gainesville; Xi, Y. Y. [University of Florida, Gainesville; Ren, F. [University of Florida; Pearton, S. J. [University of Florida; Laboutin, O. [Kopin Corporation, Taunton, MA; Cao, Yu [Kopin Corporation, Taunton, MA; Johnson, Wayne J. [Kopin Corporation, Taunton, MA; Kravchenko, Ivan I [ORNL

2012-01-01T23:59:59.000Z

194

Alternate approaches to verifying the structural adequacy of the Defense High Level Waste Shipping Cask  

SciTech Connect (OSTI)

In the early 1980s, the US Department of Energy/Defense Programs (DOE/DP) initiated a project to develop a safe and efficient transportation system for defense high level waste (DHLW). A long-standing objective of the DHLW transportation project is to develop a truck cask that represents the leading edge of cask technology as well as one that fully complies with all applicable DOE, Nuclear Regulatory Commission (NRC), and Department of Transportation (DOT) regulations. General Atomics (GA) designed the DHLW Truck Shipping Cask using state-of-the-art analytical techniques verified by model testing performed by Sandia National Laboratories (SNL). The analytical techniques include two approaches, inelastic analysis and elastic analysis. This topical report presents the results of the two analytical approaches and the model testing results. The purpose of this work is to show that there are two viable analytical alternatives to verify the structural adequacy of a Type B package and to obtain an NRC license. It addition, this data will help to support the future acceptance by the NRC of inelastic analysis as a tool in packaging design and licensing.

Zimmer, A.; Koploy, M.

1991-12-01T23:59:59.000Z

195

High-spin structure and multiphonon {gamma} vibrations in very neutron-rich {sup 114}Ru  

SciTech Connect (OSTI)

High-spin levels of the neutron-rich {sup 114}Ru have been investigated by measuring the prompt {gamma} rays in the spontaneous fission of {sup 252}Cf. The ground-state band and one-phonon {gamma}-vibrational band have been extended up to 14{sup +} and 9{sup +}, respectively. Two levels are proposed as the members of a two-phonon {gamma}-vibrational band. A back bending (band crossing) has been observed in the ground-state band at ({h_bar}/2{pi}){omega}{approx_equal} 0.40 MeV. Using the triaxial deformation parameters, the cranked shell model calculations indicate that this back bending in {sup 114}Ru should originate from the alignment of a pair of h{sub 11/2} neutrons. Triaxial projected shell model calculations for the {gamma}-vibrational band structures of {sup 114}Ru are in good agreement with the experimental data. However, when using the oblate deformation parameters, both of the above-calculated results are not in agreement with the experimental data.

Yeoh, E. Y.; Wang, J. G.; Ding, H. B.; Gu, L.; Xu, Q.; Xiao, Z. G. [Department of Physics, Tsinghua University, Beijing 100084 (China); Zhu, S. J. [Department of Physics, Tsinghua University, Beijing 100084 (China); Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); Hamilton, J. H.; Li, K.; Ramayya, A. V.; Hwang, J. K. [Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); Liu, Y. X. [School of Science, Huzhou Teachers College, Huzhou 313000 (China); Liu, S. H. [Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); UNIRIB/Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831 (United States); Sun, Y. [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Sheikh, J. A.; Bhat, G. H. [Department of Physics, University of Kashmir, Srinagar 190 006 (India); Luo, Y. X. [Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Rasmussen, J. O.; Lee, I. Y. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Ma, W. C. [Department of Physics, Mississippi State University, Mississippi State, Mississippi 39762 (United States)

2011-05-15T23:59:59.000Z

196

Study of iron structure stability in high temperature molten lead-bismuth eutectic with oxygen injection using molecular dynamics simulation  

SciTech Connect (OSTI)

Corrosion of structural materials in high temperature molten lead-bismuth eutectic is a major problem for design of PbBi cooled reactor. One technique to inhibit corrosion process is to inject oxygen into coolant. In this paper we study and focus on a way of inhibiting the corrosion of iron using molecular dynamics method. For the simulation results we concluded that effective corrosion inhibition of iron may be achieved by injection 0.0532 wt% to 0.1156 wt% oxygen into liquid lead-bismuth. At this oxygen concentration the structure of iron material will be maintained at about 70% in bcc crystal structure during interaction with liquid metal.

Arkundato, Artoto [Physics Department, Faculty of Mathematical and Natural Sciences, Jember University, Jl. Kalimantan 37 Jember (Indonesia); Su'ud, Zaki [Physics Department, Faculty of Mathematical and Natural Sciences, Bandung Institute of Technology, Jl. Ganesha 10, Bandung (Indonesia); Sudarko [Chemistry Department, Faculty of Mathematical and Natural Sciences, Jember University, Jl. Kalimantan 37 Jember (Indonesia); Shafii, Mohammad Ali [Physics Department, Faculty of Mathematical and Natural Sciences, Andalas University, Padang (Indonesia); Celino, Massimo [ENEA, CR Casaccia, Via Anguillarese 301, Rome (Italy)

2014-09-30T23:59:59.000Z

197

Optical non-reciprocity in magnetic structures related to high-T_c superconductors  

E-Print Network [OSTI]

cuprates. High-T c superconductivity in the cuprates remainstemperature for superconductivity. Instead, the mostrelated to high-T c superconductors J. Orenstein Department

Orenstein, Joseph W

2012-01-01T23:59:59.000Z

198

High-pressure structure of half-metallic CrO2 B. R. Maddox  

E-Print Network [OSTI]

transition from rutile -CrO2 phase I P42/mnm to orthorhombic -CrO2 phase II CaCl2-like, Pnnm is presented. The transition to the CaCl2 structure, which appears to be second order, occurs at 12±3 GPa without any typically transforms to another sixfold-coordinated structure, CaCl2, or the -PbO2 structure found in shock

Pickett, Warren

199

Impact of fluorine based reactive chemistry on structure and properties of high moment magnetic material  

SciTech Connect (OSTI)

The impact of the fluorine-based reactive ion etch (RIE) process on the structural, electrical, and magnetic properties of NiFe and CoNiFe-plated materials was investigated. Several techniques, including X-ray fluorescence, 4-point-probe, BH looper, transmission electron microscopy (TEM), and electron energy loss spectroscopy (EELS), were utilized to characterize both bulk film properties such as thickness, average composition, Rs, ?, Bs, Ms, and surface magnetic “dead” layers' properties such as thickness and element concentration. Experimental data showed that the majority of Rs and Bs changes of these bulk films were due to thickness reduction during exposure to the RIE process. ? and Ms change after taking thickness reduction into account were negligible. The composition of the bulk films, which were not sensitive to surface magnetic dead layers with nano-meter scale, showed minimum change as well. It was found by TEM and EELS analysis that although both before and after RIE there were magnetic dead layers on the top surface of these materials, the thickness and element concentration of the layers were quite different. Prior to RIE, dead layer was actually native oxidation layers (about 2?nm thick), while after RIE dead layer consisted of two sub-layers that were about 6?nm thick in total. Sub-layer on the top was native oxidation layer, while the bottom layer was RIE “damaged” layer with very high fluorine concentration. Two in-situ RIE approaches were also proposed and tested to remove such damaged sub-layers.

Yang, Xiaoyu, E-mail: xiaoyu.yang@wdc.com; Chen, Lifan; Han, Hongmei; Fu, Lianfeng; Sun, Ming; Liu, Feng; Zhang, Jinqiu [Western Digital Corporation, 44100 Osgood Road, Fremont, California 94539 (United States)

2014-05-07T23:59:59.000Z

200

The Time Structure of Hadronic Showers in Highly Granular Calorimeters with Tungsten and Steel Absorbers  

E-Print Network [OSTI]

The intrinsic time structure of hadronic showers influences the timing capability and the required integration time of hadronic calorimeters in particle physics experiments, and depends

The CALICE Collaboration

2015-01-01T23:59:59.000Z

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


201

Representing Multi-Parent Organizational Structures for Use in High Performance Computing Resource Scheduling Algorithms.  

E-Print Network [OSTI]

??Historically, organizational structures of many universities and corporations have followed a strictly tree-based, hierarchical model. These organizations are defined with no more than one parent… (more)

Brown, Lloyd T 1982-

2010-01-01T23:59:59.000Z

202

Developing Enzyme and Biomimetic Catalysts for Upgrading Heavy Crudes via Biological Hydrogenation and Hydrodesulfurization  

SciTech Connect (OSTI)

The recovery and conversion of heavy oils is limited due to the high viscosity of these crudes and their high heteroatom content. Conventional technology relies on thermochemical hydrogenation and hydrodesulfurization to address these problems and is energy intensive due to the high operating temperature and pressure. This project was initiated to explore biological catalysts for adding hydrogen to the heavy oil molecules. Biological enzymes are efficient at hydrogen splitting at very mild conditions such as room temperature and pressure, however, they are very specific in terms of the substrates they hydrogenate. The goal of the project was to investigate how the specificity of these enzymes can be altered to develop catalysts for oil upgrading. Three approaches were used. First was to perform chemical modification of the enzyme surface to improve binding of other non-natural substrates. Second approach was to expose the deeply buried catalytic active site of the enzyme by removal of protein scaffolding to enable better interaction with other substrates. The third approach was based on molecular biology to develop genetically engineered systems for enabling targeted structural changes in the enzyme. The first approach was found to be limited in success due to the non-specificity of the chemical modification and inability to target the region near the active site or the site of substrate binding. The second approach produced a smaller catalyst capable of catalyzing hydrogen splitting, however, further experimentation is needed to address reproducibility and stability issues. The third approach which targeted cloning of hydrogenase in alternate hosts demonstrated progress, although further work is necessary to complete the cloning process. The complex nature of the hydrogenase enzyme structure-function relationship and role of various ligands in the protein require significant more research to better understand the enzyme and to enable success in strategies in developing catalysts with broader specificity as that required for crude upgrading.

Borole, A.P.

2006-08-22T23:59:59.000Z

203

Characterising the secondary structure changes occurring in high density systems of BLG dissolved in aqueous pH 3 buffer  

E-Print Network [OSTI]

to be structured by adding starch and/or oil. Therefore, in-depth knowledge of protein folding/unfolding which can relate to the hydration and solubility of food proteins at high concentrations (e.g. as in the mouth during consumption) is also very important...

Ioannou, J. C.; Donald, A. M.; Tromp, R. H.

2014-12-31T23:59:59.000Z

204

Self-powered micro-structured solid state neutron detector with very low leakage current and high efficiency  

E-Print Network [OSTI]

Self-powered micro-structured solid state neutron detector with very low leakage current and high helps to reduce the gammas sensitivity. The neutron detec- tion efficiency of such detectors mainly, fabrication, and performance of solid-state neutron detector based on three-dimensional honeycomb-like silicon

Danon, Yaron

205

Structural characterization of water-bearing silicate and aluminosilicate glasses by high-resolution solid-state NMR  

E-Print Network [OSTI]

Structural characterization of water-bearing silicate and aluminosilicate glasses by high-resolution solid-state NMR techniques have been applied to hydrous silicate and aluminosilicate glasses: simple as to completely exclude any of the different previously proposed models for water incorporation in silicate

Boyer, Edmond

206

Vibronic fine structure in high-resolution x-ray absorption spectra from ion-bombarded boron nitride nanotubes  

SciTech Connect (OSTI)

The authors have applied high-resolution near-edge x-ray absorption fine structure measurements around the nitrogen K-edge to study the effects of ion-bombardment on near-surface properties of boron nitride nanotubes. A notable difference has been observed between surface sensitive partial electron yield (PEY) and bulk sensitive total electron yield (TEY) fine-structure measurements. The authors assign the PEY fine structure to the coupling of excited molecular vibrational modes to electronic transitions in NO molecules trapped just below the surface. Oxidation resistance of the boron nitride nanotubes is significantly reduced by low energy ion bombardment, as broken B-N bonds are replaced by N-O bonds involving oxygen present in the surface region. In contrast to the PEY spectra, the bulk sensitive TEY measurements on as-grown samples do not exhibit any fine structure while the ion-bombarded samples show a clear vibronic signature of molecular nitrogen.

Petravic, Mladen; Peter, Robert; Varasanec, Marijana [Department of Physics and Center for Micro and Nano Sciences and Technologies, University of Rijeka, 51000 Rijeka (Croatia); Li Luhua; Chen Ying [Institute for Technology Research and Innovation, Deakin University, Geelong Waurn Ponds Campus, 3217 (Australia); Cowie, Bruce C. C. [Australian Synchrotron, Clayton VIC 3168 (Australia)

2013-05-15T23:59:59.000Z

207

Lithium Diisopropylamide-Mediated Lithiations of Imines: Insights into Highly Structure-Dependent Rates and  

E-Print Network [OSTI]

enolates, their reactivities are quite different. Imine lithiations are orders of magnitude slower than this point by foreshadowing results summarized in Chart 1 and Scheme 1. Chart 1 contains structurally related-carbon. Further investigation of LDA- mediated lithiations of the imines in Chart 1 reveals structure- reactivity

Collum, David B.

208

Low cost and high performance light trapping structure for thin-film solar cells  

E-Print Network [OSTI]

Nano-scaled dielectric and metallic structures are popular light tapping structures in thin-film solar cells. However, a large parasitic absorption in those structures is unavoidable. Most schemes based on such structures also involve the textured active layers that may bring undesirable degradation of the material quality. Here we propose a novel and cheap light trapping structure based on the prism structured SiO2 for thin-film solar cells, and a flat active layer is introduced purposefully. Such a light trapping structure is imposed by the geometrical shape optimization to gain the best optical benefit. By examining our scheme, it is disclosed that the conversion efficiency of the flat a-Si:H thin-film solar cell can be promoted to exceed the currently certified highest value. As the cost of SiO2-based light trapping structure is much cheaper and easier to fabricate than other materials, this proposal would have essential impact and wide applications in thin-film solar cells.

Wang, DongLin; Su, Gang

2015-01-01T23:59:59.000Z

209

Structural Reliability of Ceramics at High Temperature: Mechanisms of Fracture and Fatigue Crack Growth  

SciTech Connect (OSTI)

Final report of our DOE funded research program. Aim of the research program was to provide a fundamental basis from which the mechanical reliability of layered structures may be understood, and to provide guidelines for the development of technologically relevant layered material structures with optimum resistance to fracture and subcritical debonding. Progress in the program to achieve these goals is described.

Reinhold H. Dauskardt

2005-08-01T23:59:59.000Z

210

Status of High Power Tests of Normal Conducting Single-Cell Standing Wave Structures  

SciTech Connect (OSTI)

Our experiments are directed toward the understanding of the physics of rf breakdown in systems that can be used to accelerate electron beams at {approx}11.4 GHz. The structure geometries have apertures, stored energy per cell, and rf pulse duration close to that of the NLC or CLIC. The breakdown rate is the main parameter that we use to compare rf breakdown behavior for different structures at a given set of rf pulse parameters (pulse shape and peak power) at 60 Hz repetition rate. In our experiments, the typical range of the breakdown rate is from one per few hours to {approx}100 per hour. To date we have tested 29 structures. We consistently found that after the initial conditioning, the behavior of the breakdown rate is reproducible for structures of the same geometry and material, and the breakdown rate dependence on peak magnetic fields is stronger than on peak surface electric fields for structures of different geometries. Below we report the main results from tests of seven structures made from hard copper, soft copper alloys and hard-copper alloys. Additional details on these and other structures will be discussed in future publications.

Dolgashev, Valery; /SLAC; Tantawi, Sami; /SLAC; Yeremian, Anahid; /SLAC; Higashi, Yasuo; /KEK, Tsukuba; Spataro, Bruno; /INFN, Rome

2012-06-25T23:59:59.000Z

211

Understanding and Improving High-Temperature Structural Properties of Metal-Silicide Intermetallics  

SciTech Connect (OSTI)

The objective of this project was to understand and improve high-temperature structural properties of metal-silicide intermetallic alloys. Through research collaboration between the research team at West Virginia University (WVU) and Dr. J.H. Schneibel at Oak Ridge National Laboratory (ORNL), molybdenum silicide alloys were developed at ORNL and evaluated at WVU through atomistic modeling analyses, thermo-mechanical tests, and metallurgical studies. In this study, molybdenum-based alloys were ductilized by dispersing MgAl2O4 or MgO spinel particles. The addition of spinel particles is hypothesized to getter impurities such as oxygen and nitrogen from the alloy matrix with the result of ductility improvement. The introduction of fine dispersions has also been postulated to improve ductility by acting as a dislocation source or reducing dislocation pile-ups at grain boundaries. The spinel particles, on the other hand, can also act as local notches or crack initiation sites, which is detrimental to the alloy mechanical properties. Optimization of material processing condition is important to develop the desirable molybdenum alloys with sufficient room-temperature ductility. Atomistic analyses were conducted to further understand the mechanism of ductility improvement of the molybdenum alloys and the results showed that trace amount of residual oxygen may be responsible for the brittle behavior of the as-cast Mo alloys. For the alloys studied, uniaxial tensile tests were conducted at different loading rates, and at room and elevated temperatures. Thermal cycling effect on the mechanical properties was also studied. Tensile tests for specimens subjected to either ten or twenty thermal cycles were conducted. For each test, a follow-up detailed fractography and microstructural analysis were carried out. The test results were correlated to the size, density, distribution of the spinel particles and processing time. Thermal expansion tests were carried out using thermo-mechanical analyzer (TMA). Results showed that the coefficient of thermal expansion (CTE) value decreases with the addition of spinel and silicide particles. Thermo-cycling tests showed that molybdenum alloy with 6% wt of spinel (MgAl2O4) developed microcracks which were caused by thermal expansion mismatch between the spinel particles and molybdenum matrix, as well as the processing conditions. Detailed post-mortem studies of microstructures and segregation of impurities to the oxide dispersion/Mo interfaces were conducted using x-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS).

Bruce S. Kang

2005-10-10T23:59:59.000Z

212

HIGH-RESOLUTION HELIOSEISMIC IMAGING OF SUBSURFACE STRUCTURES AND FLOWS OF A SOLAR ACTIVE REGION OBSERVED BY HINODE  

SciTech Connect (OSTI)

We analyze a solar active region observed by the Hinode Ca II H line using the time-distance helioseismology technique, and infer wave-speed perturbation structures and flow fields beneath the active region with a high spatial resolution. The general subsurface wave-speed structure is similar to the previous results obtained from Solar and Heliospheric Observatory/Michelson Doppler Imager observations. The general subsurface flow structure is also similar, and the downward flows beneath the sunspot and the mass circulations around the sunspot are clearly resolved. Below the sunspot, some organized divergent flow cells are observed, and these structures may indicate the existence of mesoscale convective motions. Near the light bridge inside the sunspot, hotter plasma is found beneath, and flows divergent from this area are observed. The Hinode data also allow us to investigate potential uncertainties caused by the use of phase-speed filter for short travel distances. Comparing the measurements with and without the phase-speed filtering, we find out that inside the sunspot, mean acoustic travel times are in basic agreement, but the values are underestimated by a factor of 20%-40% inside the sunspot umbra for measurements with the filtering. The initial acoustic tomography results from Hinode show a great potential of using high-resolution observations for probing the internal structure and dynamics of sunspots.

Zhao Junwei; Kosovichev, Alexander G. [W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305-4085 (United States); Sekii, Takashi [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan)

2010-01-01T23:59:59.000Z

213

Optical non-reciprocity in magnetic structures related to high-T_c superconductors  

E-Print Network [OSTI]

related to high-T c superconductors J. Orenstein Departmentphase in cuprate superconductors. This ?nding is independent

Orenstein, Joseph W

2012-01-01T23:59:59.000Z

214

Model-based design of an ultra high performance concrete support structure for a wind turbine  

E-Print Network [OSTI]

A support tower is the main structure which would support rotor, power transmission and control systems, and elevates the rotating blades above the earth boundary layer. A successful design should ensure safe, efficient ...

Wang, Zheng, M. Eng. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

215

Comparisons on offshore structure responses to random waves using linear and high-order wave theories  

E-Print Network [OSTI]

The predicted responses of an offshore structure when the wave induced kinematics are computed from different estimation methods can change significantly. The sometimes controversial results have recently motivated the development of a new...

Ramos Heredia, Rafael Juda

2012-06-07T23:59:59.000Z

216

Acoustically Mounted Microcrystals Yield High-Resolution X-ray Structures  

SciTech Connect (OSTI)

We demonstrate a general strategy for determining structures from showers of microcrystals. It uses acoustic droplet ejection to transfer 2.5 nL droplets from the surface of microcrystal slurries, through the air, onto mounting micromesh pins. Individual microcrystals are located by raster-scanning a several-micrometer X-ray beam across the cryocooled micromeshes. X-ray diffraction data sets merged from several micrometer-sized crystals are used to determine 1.8 {angstrom} resolution crystal structures.

Soares, Alexei S.; Engel, Matthew A.; Stearns, Richard; Datwani, Sammy; Olechno, Joe; Ellson, Richard; Skinner, John M.; Allaire, Marc; Orville, Allen M. (Labcyte); (BNL)

2012-10-25T23:59:59.000Z

217

A reaction-layer mechanism for the delayed failure of micron-scale polycrystalline silicon structural films subjected to high-cycle fatigue loading  

SciTech Connect (OSTI)

A study has been made of high-cycle fatigue in 2um thick structural films of n+- type, polycrystalline silicon for MEMS applications.

Muhlstein, C.L.; Stach, E.A.; Ritchie, R.O.

2001-11-01T23:59:59.000Z

218

High quantum efficiency photocathode simulation for the investigation of novel structured designs  

SciTech Connect (OSTI)

A computer model in CST Studio Suite has been developed to evaluate several novel geometrically enhanced photocathode designs. This work was aimed at identifying a structure that would increase the total electron yield by a factor of two or greater in the 1–30 keV range. The modeling software was used to simulate the electric field and generate particle tracking for several potential structures. The final photocathode structure has been tailored to meet a set of detector performance requirements, namely, a spatial resolution of <40 ?m and a temporal spread of 1–10 ps. We present the details of the geometrically enhanced photocathode model and resulting static field and electron emission characteristics.

Opachich, Y. P., E-mail: opachiyp@nv.doe.gov; Ross, P. W.; Huffman, E.; Koch, J. A. [National Security Technologies LLC, Livermore, California 94550 (United States); MacPhee, A. G.; Nagel, S. R.; Bell, P. M.; Bradley, D. K.; Landen, O. L. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Hilsabeck, T. J. [General Atomics, San Diego, California 92121 (United States)

2014-11-15T23:59:59.000Z

219

Nano-scale Composite Hetero-structures: Novel High Capacity Reversible...  

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

year (Phase 2) * Synthesis of high specific capacity anode - Novel Materials Synthesis * bulk crystalline Si, Nanocrystalline Si, Amorphous Si with carbon as a matrix * Nanorods,...

220

Neutrons and X-rays reveal structure of high-temperature liquid...  

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

first determination of the complete set of pair distribution functions for a high temperature oxide melt, which gives element-specific information on the probability of finding...

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


221

High-pressure synthesis and structure of a new aurate, CaAu{sub 2}O{sub 4}  

SciTech Connect (OSTI)

A novel aurate, CaAu{sub 2}O{sub 4}, after synthesis under high-pressure conditions was recovered to room temperature by quenching. The structure, determined with synchrotron powder X-ray diffraction and single-crystal X-ray data by model building, was refined using the Rietveld techniques. It contains corner-shared AuO{sub 4} square planes and CaO{sub 8} dodecahedra. 25 refs., 2 figs., 1 tab.

Park, J.H.; Parise, J.B. [State Univ. of New York, Stony Brook, NY (United States)

1995-06-01T23:59:59.000Z

222

High-temperature-oxidation-induced ordered structure in Inconel 939 superalloy exposed to oxy-combustion environments  

SciTech Connect (OSTI)

In the integrated oxy-fuel combustion and turbine power generation system, turbine alloys are exposed to high temperature and an atmosphere comprised of steam, CO2 and O2. While surface and internal oxidation of the alloy takes place, the microstructure in the subsurface region also changes due to oxidation that results in the loss of the strengthening precipitates. In an earlier study of the oxidation of Inconel 939 Ni-based superalloy exposed to oxy-fuel combustion environment for up to 1000 hours, a high-temperature-oxidation-induced phase transformation in the sub-surface region was noticed and a two-phase region formed at the expense of strengthening ?' phase. While one of the two phases was identified as the Ni-matrix (? solid solution, face-center-cubic) phase, the other product phase remained unidentified. In this study, the crystal structure of the unknown phase and its orientation relationship with the parent Ni-matrix phase was investigated through electron diffraction and high-resolution transmission electron microscopy. It was determined that the crystal structure of the unknown phase could be modeled as a ternary derivative of the ordered ?-Ni3Ti phase (D024) structure with lattice parameters of a = 0.5092 nm and c = 0.8336 nm, ? = 90º, ? = 90º and ? = 120º.

Zhu, Jingxi; Wise, Adam; Nuhfer, Thomas; Holcomb, Gordon R.; Jablonski, Paul D.; Sridhar, Seetharaman; Laughlin, David E.

2013-04-20T23:59:59.000Z

223

Pedestal structure and stability in high-performance plasmas on Alcator C-Mod  

E-Print Network [OSTI]

High-performance operation in tokamaks is characterized by the formation of a pedestal, a region of suppressed transport and steep gradients in density, temperature, and pressure near the plasma edge. The pedestal height ...

Walk, John Reel, Jr

2014-01-01T23:59:59.000Z

224

New Measurements of High-Momentum Nucleons and Short-Range Structures in Nuclei  

E-Print Network [OSTI]

We present new measurements of electron scattering from high-momentum nucleons in nuclei. These data allow an improved determination of the strength of two-nucleon correlations for several nuclei, including light nuclei ...

Filippone, Bradley W.

225

Improvements on carbon nanotube structures in high-energy density ultracapacitor electrode design  

E-Print Network [OSTI]

Ultracapacitors are a class of electrochemical energy storage device that is gaining significant industrial traction due to their high charging rate and cycle life compared to rechargeable batteries; however, they store ...

Jenicek, David P. (David Pierre)

2014-01-01T23:59:59.000Z

226

Structural performance of early 20th century masonry high rise buildings  

E-Print Network [OSTI]

Early generation high rise buildings built between 1890 and World War 11 represent a technical transition between traditional load bearing masonry construction and modern curtain wall systems, and are typically referred ...

Buntrock, Rebecca (Rebecca Miriam)

2010-01-01T23:59:59.000Z

227

New measurements of high-momentum nucleons and short-range structures in nuclei  

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

We present new, high-Q2 measurements of inclusive electron scattering from high-momentum nucleons in nuclei. This yields an improved extraction of the strength of two-nucleon correlations for several nuclei, including light nuclei where clustering effects can, for the first time, be examined. The data extend to the kinematic regime where three-nucleon correlations are expected to dominate and we observe significantly greater strength in this region than previous measurements.

Fomin, N; Arrington, J; Benmokhtar, F; Boeglin, W; Bosted, P; Bruell, A; Bukhari, M.H. S; Chudakov, E; Clasie, B; Connell, S H; Dalton, M M; Daniel, A; Day, D B; Dutta, D; Ent, R; El Fassi, L; Fenker, H; Filippone, B W; Garrow, K; Gaskell, D; Hill, C; Holt, R J; Horn, T; Jones, M K; Jourdan, J; Kalantarians, N; Keppel, C E; Kiselev, D; Kotulla, M; Lindgren, R; Lung, A F; Malace, S; Markowitz, P; McKee, P; Meekins, D G; Mkrtchyan, H; Navasardyan, T; Niculescu, G; Opper, A K; Perdrisat, C; Potterveld, D H; Punjabi, V; Qian, X; Reimer, P E; Roche, J; Rodriguez, V M; Rondon, O; Schulte, E; Seely, J; Segbefia, E; Slifer, K; Smith, G R; Solvignon, P; Tadevosyan, V; Tajima, S; Tang, L; Testa, G; Trojer, R; Tvaskis, V; Vulcan, W F; Wasko, C; Wesselmann, F R; Wood, S A

2012-02-29T23:59:59.000Z

228

New measurements of high-momentum nucleons and short-range structures in nuclei  

E-Print Network [OSTI]

We present new, high-Q^2 measurements of inclusive electron scattering from high-momentum nucleons in nuclei. This yields an improved extraction of the strength of two-nucleon correlations for several nuclei, including light nuclei where clustering effects can, for the first time, be examined. The data extend to the kinematic regime where three-nucleon correlations are expected to dominate and we observe significantly greater strength in this region than previous measurements.

Fomin, N; Asaturyan, R; Benmokhtar, F; Boeglin, W; Bosted, P; Bruell, A; Bukhari, M H S; Chudakov, E; Clasie, B; Connell, S H; Dalton, M M; Daniel, A; Day, D B; Dutta, D; Ent, R; Fassi, L El; Fenker, H; Filippone, B W; Garrow, K; Gaskell, D; Hill, C; Holt, R J; Horn, T; Jones, M K; Jourdan, J; Kalantarians, N; Keppel, C E; Kiselev, D; Kotulla, M; Lindgren, R; Lung, A F; Malace, S; Markowitz, P; McKee, P; Meekins, D G; Mkrtchyan, H; Navasardyan, T; Niculescu, G; Opper, A K; Perdrisat, C; Potterveld, D H; Punjabi, V; Qian, X; Reimer, P E; Roche, J; Rodriguez, V M; Rondon, O; Schulte, E; Seely, J; Segbefia, E; Slifer, K; Smith, G R; Solvignon, P; Tadevosyan, V; Tajima, S; Tang, L; Testa, G; Trojer, R; Tvaskis, V; Vulcan, W F; Wasko, C; Wesselmann, F R; Wood, S A; Wright, J; Zheng, X

2011-01-01T23:59:59.000Z

229

High Overtone Quasinormal Modes of Analog Black Holes and the Small Scale Structure of the Background Fluid  

E-Print Network [OSTI]

The goal of this paper is to build a foundation for, and explore the possibility of, using high overtone quasinormal modes of analog black holes to probe the small scale (microscopic) structure of a background fluid in which an analog black hole is formed. This may provide a tool to study the small scale structure of some interesting quantum systems such as Bose-Einstein condensates. In order to build this foundation, we first look into the hydrodynamic case where we calculate the high overtone quasinormal mode frequencies of a 3+1 dimensional canonical non-rotating acoustic black hole. The leading order calculations have been done earlier in the literature. Here, we obtain the first order correction. We then analyze the high overtone quasinormal modes of acoustic black holes in a Bose-Einstein condensate using the linearized Gross-Pitaevskii equation. We point out that at the high overtone quasinormal mode limit, the only term that is important in the linearized Gross-Pitaevskii equation is the quantum potential term, which is a small scale effect.

Ramin G. Daghigh; Michael D. Green

2014-11-25T23:59:59.000Z

230

High Sensitivity Combined with Extended Structural Coverage of Labile Compounds via Nanoelectrospray Ionization at Subambient Pressures  

SciTech Connect (OSTI)

Subambient pressure ionization with nanoelectrospray (SPIN) has proven to be effective in producing ions with high efficiency and transmitting them to low pressures for high sensitivity mass spectrometry (MS) analysis. Here we present evidence that not only does the SPIN source improve MS sensitivity but also allows for gentler ionization conditions. The gentleness of a conventional heated capillary electrospray ionization (ESI) source and the SPIN source was compared by the liquid chromatography mass spectrometry (LC-MS) analysis of colominic acid. Colominic acid is a mixture of sialic acid polymers of different lengths containing labile glycosidic linkages between monomer units necessitating a gentle ion source. By coupling the SPIN source with high resolution mass spectrometry and using advanced data processing tools, we demonstrate much extended coverage of sialic acid polymer chains as compared to using the conventional ESI source. Additionally we show that SPIN-LC-MS is effective in elucidating polymer features with high efficiency and high sensitivity previously unattainable by the conventional ESI-LC-MS methods. ?

Cox, Jonathan T.; Kronewitter, Scott R.; Shukla, Anil K.; Moore, Ronald J.; Smith, Richard D.; Tang, Keqi

2014-10-07T23:59:59.000Z

231

Pade-resummed high-order perturbation theory for nuclear structure calculations  

E-Print Network [OSTI]

We apply high-order many-body perturbation theory for the calculation of ground-state energies of closed-shell nuclei using realistic nuclear interactions. Using a simple recursive formulation, we compute the perturbative energy contributions up to 30th order and compare to exact no-core shell model calculations for the same model space and Hamiltonian. Generally, finite partial sums of this perturbation series do not show convergence with increasing order, but tend to diverge exponentially. Nevertheless, through a simple resummation via Pade approximants it is possible to extract rapidly converging and highly accurate results for the ground state energy.

Robert Roth; Joachim Langhammer

2009-10-19T23:59:59.000Z

232

Area detector corrections for high quality synchrotron X-ray structure factor measurements  

SciTech Connect (OSTI)

Correction procedures for obtaining accurate X-ray structure factors from large area detectors are considered, including subpanel effects, over excited pixels and careful intensity corrections. Problems associated with data normalization, the use of a pixel response correction from a glass standard and minimization of systematic errors are also discussed. Data from glassy GeSe{sub 2} and liquid water measured with a Perkin Elmer amorphous-Silicon detector are used to demonstrate the effectiveness of these correction procedures. This requires reduction of systematic errors in the measured intensity to around the 0.1% level.

Skinner L. B.; Parise J.; Benmore, C.

2011-10-01T23:59:59.000Z

233

Characterization of the coherent structure in a high speed subsonic jet  

E-Print Network [OSTI]

number Reynolds number PUD Re 0 local hot-wire Reynolds number, P"~w U hot-wire resistance Symbol Description R reference hot-wire resistance St S aw Strouhal number, fD/U hot-wire overheat ratio, lV r %V r T R r 1 T aw adiabatic hot... the structure of the jet. Compressed air is supplied by a reciprocating compressor to a 30 cm. diameter stilling chamber by way of a storage tank, water after cooler, two water separator/filters and a pressure regulator. The water after cooler was used...

Wattanachayakul, Montri

1980-01-01T23:59:59.000Z

234

Electronic Structure of LaOFeP - a Different Type of High Temperature  

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

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

235

RUI: Structure and Behavior of RF-Driven Plasma Filaments in High-Pressure Gases  

SciTech Connect (OSTI)

The filamentary discharge seen within commercial plasma globes is commonly enjoyed, yet not well understood. We investigate filament properties in a plasma globe using a variable high voltage amplifier. Results from the 3-year grant period and their physics are discussed.

Burin, Michael [CSUSM

2014-11-18T23:59:59.000Z

236

Structure and elasticity of serpentine at high-pressure Mainak Mookherjee a,  

E-Print Network [OSTI]

volcanoes, high electrical conductivities, magnetic and seismic anomalies. Using theoretical methods, we. Evidence of pressure- induced hydrogen bonding is absent in serpentine, as evident from reduction of O K is the bulk modulus, prime indicates pressure derivatives, and O refers to zero pressure. Our best

Stixrude, Lars

237

HIGH EFFICIENCY Cu(ln,Ga)SepBASED SOLAR CELLS: PROCESSING OF NOVEL ABSORBER STRUCTURES  

E-Print Network [OSTI]

be more optimally solved by either lowering substrate temperature or finding other suitable and low-cost ABSTRACT Our effort towards the attainment of high performance devices has yielded several devices, and 15.3% for a 4.85-cm* single cell. Achievement of a 17.2% device efficiency fabricated for operation

Scofield, John H.

238

New measurements of high-momentum nucleons and short-range structures in nuclei  

E-Print Network [OSTI]

We present new measurements of electron scattering from high-momentum nucleons in nuclei. These data allow an improved determination of the strength of two-nucleon correlations for several nuclei, including light nuclei where clustering effects can, for the first time, be examined. The data also include the kinematic region where three-nucleon correlations are expected to dominate.

N. Fomin; J. Arrington; R. Asaturyan; F. Benmokhtar; W. Boeglin; P. Bosted; A. Bruell; M. H. S. Bukhari; E. Chudakov; B. Clasie; S. H. Connell; M. M. Dalton; A. Daniel; D. B. Day; D. Dutta; R. Ent; L. El Fassi; H. Fenker; B. W. Filippone; K. Garrow; D. Gaskell; C. Hill; R. J. Holt; T. Horn; M. K. Jones; J. Jourdan; N. Kalantarians; C. E. Keppel; D. Kiselev; M. Kotulla; R. Lindgren; A. F. Lung; S. Malace; P. Markowitz; P. McKee; D. G. Meekins; H. Mkrtchyan; T. Navasardyan; G. Niculescu; A. K. Opper; C. Perdrisat; D. H. Potterveld; V. Punjabi; X. Qian; P. E. Reimer; J. Roche; V. M. Rodriguez; O. Rondon; E. Schulte; J. Seely; E. Segbefia; K. Slifer; G. R. Smith; P. Solvignon; V. Tadevosyan; S. Tajima; L. Tang; G. Testa; R. Trojer; V. Tvaskis; W. F. Vulcan; C. Wasko; F. R. Wesselmann; S. A. Wood; J. Wright; X. Zheng

2012-01-10T23:59:59.000Z

239

Methods for detecting flaring structures in Sagittarius A* with high frequency VLBI  

E-Print Network [OSTI]

The super massive black hole candidate, Sagittarius A*, exhibits variability from radio to X-ray wavelengths on time scales that correspond to < 10 Schwarzschild radii. We survey the potential of millimeter-wavelength VLBI to detect and constrain time variable structures that could give rise to such variations, focusing on a model in which an orbiting hot spot is embedded in an accretion disk. Non-imaging algorithms are developed that use interferometric closure quantities to test for periodicity, and applied to an ensemble of hot-spot models that sample a range of parameter space. We find that structural periodicity in a wide range of cases can be detected on most potential VLBI arrays using modern VLBI instrumentation. Future enhancements of mm/sub-mm VLBI arrays including phased array processors to aggregate VLBI station collecting area, increased bandwidth recording, and addition of new VLBI sites all significantly aid periodicity detection. The methods described herein can be applied to other models of Sagittarius A*, including jet outflows and Magneto-Hydrodynamic accretion simulations.

Sheperd S. Doeleman; Vincent L. Fish; Avery E. Broderick; Abraham Loeb; Alan E. E. Rogers

2008-09-19T23:59:59.000Z

240

Defect structures induced by high-energy displacement cascades in c uranium  

SciTech Connect (OSTI)

Displacement cascade simulations were conducted for the c uranium system based on molecular dynamics. A recently developed modified embedded atom method (MEAM) potential was employed to replicate the atomic interactions while an embedded atom method (EAM) potential was adopted to help characterize the defect structures induced by the displacement cascades. The atomic displacement process was studied by providing primary knock-on atoms (PKAs) with kinetic energies from 1 keV to 50 keV. The influence of the PKA incident direction was examined. The defect structures were analyzed after the systems were fully relaxed. The states of the self-interstitial atoms (SIAs) were categorized into various types of dumbbells, the crowdion, and the octahedral interstitial. The voids were determined to have a polyhedral shape with {110} facets. The size distribution of the voids was also obtained. The results of this study not only expand the knowledge of the microstructural evolution in irradiated c uranium, but also provide valuable references for the radiation-induced defects in uranium alloy fuels. 2014 Elsevier

Yinbin Miao; Benjamin Beeler; Chaitanya Deo; Maria A. Okuniewski; James F. Stubbins

2015-01-01T23:59:59.000Z

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


241

A high-order discontinuous Galerkin method for fluid–structure interaction with efficient implicit–explicit time stepping  

SciTech Connect (OSTI)

We present a high-order accurate scheme for coupled fluid–structure interaction problems. The fluid is discretized using a discontinuous Galerkin method on unstructured tetrahedral meshes, and the structure uses a high-order volumetric continuous Galerkin finite element method. Standard radial basis functions are used for the mesh deformation. The time integration is performed using a partitioned approach based on implicit–explicit Runge–Kutta methods. The resulting scheme fully decouples the implicit solution procedures for the fluid and the solid parts, which we perform using two separate efficient parallel solvers. We demonstrate up to fifth order accuracy in time on a non-trivial test problem, on which we also show that additional subiterations are not required. We solve a benchmark problem of a cantilever beam in a shedding flow, and show good agreement with other results in the literature. Finally, we solve for the flow around a thin membrane at a high angle of attack in both 2D and 3D, and compare with the results obtained with a rigid plate.

Froehle, Bradley, E-mail: bfroehle@berkeley.edu; Persson, Per-Olof, E-mail: persson@berkeley.edu

2014-09-01T23:59:59.000Z

242

Thermo-physical and structural studies of sodium zinc borovanadate glasses in the region of high concentration of modifier oxides  

SciTech Connect (OSTI)

Highlights: ? Highly modified sodium zinc borovanadate glasses. ? Structural model for borovanadate glasses. ? Network forming tendency of ZnO in borovanadate glasses. ? Fragility can be limited to NBO concentration in borovanadate glasses. -- Abstract: This paper reports investigation of Na{sub 2}O and ZnO modified borovanadate glasses in the highly modified regime of compositions. These glasses have been prepared by microwave route. Ultraviolet (UV) and visible, infrared (IR), Magic Angle Spinning Nuclear Magnetic Resonance (MAS NMR) and Electron Paramagnetic Resonance (EPR) spectroscopies have been used to characterize the speciation in the glasses. Together with the variation of properties such as molar volume and glass transition temperatures, spectroscopic data indicate that at high levels of modification, ZnO tends to behave like network former. It is proposed that the observed variation of all the properties can be reasonably well understood with a structural model. The model considers that the modification and speciation in glasses are strongly determined by the hierarchy of group electronegativities. Further, it is proposed that the width of the transitions of glasses obtained under same condition reflects the fragility of the glasses. An empirical expression has been suggested to quantify fragility on the basis of width of the transition regions.

Chethana, B.K. [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India)] [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India); Reddy, C. Narayana [Maharani's Science College for Women, Bangalore 560 001 (India)] [Maharani's Science College for Women, Bangalore 560 001 (India); Rao, K.J., E-mail: kalyajrao@yahoo.co.in [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India)

2012-07-15T23:59:59.000Z

243

Observation of high-spin oblate band structures in {sup 141}Pm  

SciTech Connect (OSTI)

The high-spin states of {sup 141}Pm have been investigated through the reaction {sup 126}Te({sup 19}F,4n) at a beam energy of 90 MeV. A previous level scheme has been updated with spins up to 49/2({h_bar}/2{pi}). Six collective bands at high spins are newly observed. Based on the systematic comparison, one band is proposed as a decoupled band; two bands with strong {Delta}I=1 M1 transitions inside the bands are suggested as the oblate bands with {gamma} {approx}-60 deg.; three other bands with large signature splitting have been proposed with the oblate-triaxial deformation with {gamma}{approx} -90 deg. The triaxial n-particle-n-hole particle rotor model calculations for one of the oblate bands in {sup 141}Pm are in good agreement with the experimental data. The other characteristics for these bands have been discussed.

Gu, L.; Zhu, S. J.; Wang, J. G.; Yeoh, E. Y.; Xiao, Z. G.; Zhang, M.; Liu, Y.; Ding, H. B.; Xu, Q. [Department of Physics, Tsinghua University, Beijing 100084 (China); Zhang, S. Q.; Meng, J. [Department of Technical Physics, Peking University, Beijing 100871 (China); Zhu, L. H.; Wu, X. G.; He, C. Y.; Li, G. S.; Wang, L. L.; Zheng, Y.; Zhang, B. [China Institute of Atomic Energy, Beijing 102413 (China)

2011-06-15T23:59:59.000Z

244

Crump Geyser: High Precision Geophysics & Detailed Structural Exploration & Slim Well Drilling  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Discover new 260F and 300F geothermal reservoirs in Oregon. To demonstrate the application of high precision geophysics for well targeting. Demonstrate a combined testing approach to Flowing Differential Self Potential (FDSP) and electrical tomography resistivity as a guide to exploration and development. Demonstrate utility and benefits of sump-less drilling for a low environmental impact. Create both short and long term employment through exploration, accelerated development timeline and operation.

245

Ultra-high-resolution Observations of MHD Waves in Photospheric Magnetic Structures  

E-Print Network [OSTI]

Here we review the recent progress made in the detection, examination, characterisation and interpretation of oscillations manifesting in small-scale magnetic elements in the solar photosphere. This region of the Sun's atmosphere is especially dynamic, and importantly, permeated with an abundance of magnetic field concentrations. Such magnetic features can span diameters of hundreds to many tens of thousands of km, and are thus commonly referred to as the `building blocks' of the magnetic solar atmosphere. However, it is the smallest magnetic elements that have risen to the forefront of solar physics research in recent years. Structures, which include magnetic bright points, are often at the diffraction limit of even the largest of solar telescopes. Importantly, it is the improvements in facilities, instrumentation, imaging techniques and processing algorithms during recent years that have allowed researchers to examine the motions, dynamics and evolution of such features on the smallest spatial and temporal ...

Jess, David B

2015-01-01T23:59:59.000Z

246

Steel Plate Shear Walls: Efficient Structural Solution for Slender High-Rise in China  

SciTech Connect (OSTI)

The 329.6 meter tall 74-story Jinta Tower in Tianjin, China, is expected, when complete, to be the tallest building in the world with slender steel plate shear walls used as the primary lateral load resisting system. The tower has an overall aspect ratio close to 1:8, and the main design challenge was to develop an efficient lateral system capable of resisting significant wind and seismic lateral loads, while simultaneously keeping wind induced oscillations under acceptable perception limits. This paper describes the process of selection of steel plate shear walls as the structural system, and presents the design philosophy, criteria and procedures that were arrived at by integrating the relevant requirements and recommendations of US and Chinese codes and standards, and current on-going research.

Mathias, Neville; Long, Eric [Skidmore, Owings and Merrill LLP, One Front Street, San Francisco, CA 94111 (United States); Sarkisian, Mark [Skidmore, Owings and Merrill LLP, One Front Street, San Francisco, CA 94111 (United States); Huang Zhihui [Skidmore, Owings and Merrill LLP, One Front Street, San Francisco, CA 94111 (United States)

2008-07-08T23:59:59.000Z

247

The structural and mechanical properties of a Cu??Zr??(at. %) alloy processed by High-Velocity-Injection (HVI)  

E-Print Network [OSTI]

/vacuum coupled pressure gradient. The molten jet rapidly solidifies, as it is in good thermal contact wi th the cir- cular walls of the copper channel. This process (melting and injection) is carried out in inert protective atmospheres (helium). The samples... produced are in the form of cylindrical rods with large length to diameter ratios (40:1). The samples exhibit a good sur- face finish and are of high density. The structural and mechanical characterization of the Cu6 Zr 0(at. %%u) samples produced...

Hays, Charles C.

1986-01-01T23:59:59.000Z

248

Magnetic structure of the high temperature superconductor Gd{sub 1–x}Th{sub x}FeAsO  

SciTech Connect (OSTI)

The magnetic structure of the high temperature superconductor Gd{sub 1–x}Th{sub x}FeAsO (x?=?0, 0.25) has been determined by neutron powder diffraction. The Gd moments were found to order at T{sub N} ? 4?K and to lie in the basal plane, and form alternating ferromagnetic sheets along the c-axis. The orientation of the gadolinium moments in both the doped and undoped compounds has been confirmed using {sup 155}Gd Mössbauer spectroscopy.

Lee-Hone, N. R.; Ryan, D. H., E-mail: dhryan@physics.mcgill.ca [Physics Department and Centre for the Physics of Materials, McGill University, 3600 University Street, Montreal, Quebec H3A 2T8 (Canada); Cadogan, J. M. [School of Physical, Environmental and Mathematical Sciences, UNSW Canberra at the Australian Defence Force Academy, Canberra, BC 2610 (Australia); Sun, Y. L.; Cao, G. H. [Department of Physics, Zhejiang University, Hangzhou 310027 (China)

2014-05-07T23:59:59.000Z

249

High-spin level structure of {sup 115}Rh: Evolution of triaxiality in odd-even Rh isotopes  

SciTech Connect (OSTI)

High-spin excited states in the neutron-rich nucleus {sup 115}Rh have been identified for the first time by studying prompt {gamma} rays from the spontaneous fission of {sup 252}Cf with the Gammasphere detector array. A new yrast band and a sideband are built in {sup 115}Rh. This level scheme is proposed to be built on the 7/2{sup +} ground state. The existence of a large signature splitting and an yrare band in {sup 115}Rh shows typical features of a triaxially deformed nucleus. The rigid triaxial rotor plus particle model is used to interpret the level structure of {sup 115}Rh. The level energies, the {gamma} branching ratios, the large signature splitting in the yrast band, and the inverted signature splitting in the yrare band in {sup 115}Rh are reproduced very well. Strong K mixing occurs in {sup 115}Rh at high spin.

Liu, S. H. [Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States); UNIRIB/Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831 (United States); Hamilton, J. H.; Ramayya, A. V.; Brewer, N. T.; Hwang, J. K. [Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States); Gelberg, A. [Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Cologne (Germany); Gu, L.; Yeoh, E. Y.; Zhu, S. J. [Department of Physics, Tsinghua University, Beijing 100084 (China); Luo, Y. X. [Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States); Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Rasmussen, J. O. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Ma, W. C. [Department of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762 (United States); Daniel, A. V. [Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States); Joint Institute for Nuclear Research, RU-141980 Dubna (Russian Federation); Oganessian, Yu. Ts.; Ter-Akopian, G. M. [Joint Institute for Nuclear Research, RU-141980 Dubna (Russian Federation)

2011-07-15T23:59:59.000Z

250

Structural Characterization of the 216-Z-9 Crib Prior to Decontamination and Demolition Using Robot Crawler and High Resolution Photography  

SciTech Connect (OSTI)

The Department of Energy, Richland Operations Office is preparing to conduct a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) removal action for the decontamination and demolition of the above-grade mining structures and equipment at the 216-Z-9 Crib. An investigation of the condition of the mining complex was initiated to determine constraints necessary for safely conducting the removal of the buildings. While crib headspace chemical analysis and nondestructive analysis of the interior of the buildings was completed to address radiological contamination concerns, the primary concern regarding the removal of the above-grade structures located on the crib cover involves determining the loading capacity and structural integrity of the crib cover slab. Additional concerns included headspace gases and radionuclide contamination. Until the structural analysis was completed, loading limits on the crib cover had been restricted. Photographic documentation revealed the loss of protective tiles and acid resistant coating from the underside of the cover raising a question of concrete stability. The investigation relied heavily on the use of high resolution photography with high intensity lighting for photographic documentation of the underside of the crib cover, followed by structural analysis of the documentation by a team of qualified engineers. Deployment of a robot crawler with attached camera and positioning of a fixed camera were integral to this structural characterization effort. Results of the photographic documentation were of sufficient quality to allow for bounding decisions to be made regarding the loading of the crib cover while performing the demolition of the mining structures (glovebox, excavator, bucket) and the associated buildings. The 216-Z-9 Crib, also known as the 216 Z-9 Recuplex CAW (CA column waste) Waste Disposal Cavern, the Z-9 Trench and the Z-9 Crib was constructed as an engineered trench with an open area beneath a concrete slab. The crib is located near the Plutonium Finishing Plant (PFP) facility, at the Hanford Nuclear Reservation in Eastern Washington State. The crib was used as a disposal site for effluent chemical and radiological wastes from the recovery of uranium and plutonium through extraction or RECUPLEX process, a method that recovered uranium and plutonium from liquid and solid wastes and scraps from other PFP processes. During its operating life, from 1955 through 1962, the Z-9 Crib received liquid wastes totaling approximately four million liters, or one million gallons. Analyses of the crib soil in seven locations to a depth of up to two meters (six feet) beneath the crib floor indicated that the plutonium content of the crib soil ranged from 50 to 150 kg (the highest concentration measured was 34.5 g/L of soil). While performing the structural evaluation of the crib cover, additional characterization information was obtained on the radiological and chemical conditions of the crib and structures. (authors)

Hopkins, A.; Sutter, C.; Klos, D.B. [Fluor Hanford, Richland, WA (United States); Teal, J.A. [Fluor Government Group, Operations West, Richland WA (United States); Oates, L. [Environmental Quality Management, Richland, WA (United States); Bond, F.W. [Washington State Department of Ecology, Richland, WA (United States); Mattlin, E.; Clarke, S. [U.S. Department of Energy, Richland Operations Office, Richland WA (United States)

2008-07-01T23:59:59.000Z

251

2546 IEEE 1`RANSACTIONS ON ELECTRON DEVICES, VOL. ED-32, NO. 11, NOVEMBER 1985 their high-current drivability. However, their structure is so tom-  

E-Print Network [OSTI]

2546 IEEE 1`RANSACTIONS ON ELECTRON DEVICES, VOL. ED-32, NO. 11, NOVEMBER 1985 their high-current drivability. However, their structure is so tom- plicated that it is difficult to fabricate fine devices and high-deltsity IC's. This paper reports a new high-speed device utilizing a 21XEG heterostrucure, which

Woodall, Jerry M.

252

THE STRUCTURAL CHEMISTRY OF MOLYBDENUM IN MODEL HIGH LEVEL NUCLEAR WASTE GLASSES, INVESTIGATED BY MO K-EDGE X-RAY ABSORPTION  

E-Print Network [OSTI]

THE STRUCTURAL CHEMISTRY OF MOLYBDENUM IN MODEL HIGH LEVEL NUCLEAR WASTE GLASSES, INVESTIGATED of molybdenum in model UK high level nuclear waste glasses was investigated by X-ray Absorption Spectroscopy (XAS). Molybdenum K-edge XAS data were acquired from several inactive simulant high level nuclear waste

Sheffield, University of

253

High-temperature oxidation and corrosion of structural materials in molten chlorides.  

SciTech Connect (OSTI)

A molten salt-based process for treatment of spent oxide fuels is under development at the Argonne National Laboratory. A major part of the development effort involves identification of corrosion-resistant structural materials for the process vessels. Coupons of two stainless steels, tantalum, and two Inconel alloys were submitted to a corrosion test in an argon atmosphere with 10% oxygen. The coupons were partially immersed in molten lithium chloride salt containing small amounts of lithium metal, lithium oxide, and lithium nitride. Two sets of coupons were tested, the first at 750{sup o}C for 30 days and the second at 650{sup o}C for 6 days. Coupons of the first set corroded completely. In the second set of coupons, all corroded to some extent, but Inconel 600 showed the best performance overall. The salt-exposed region generally showed the greatest corrosion in the other coupons. One of the 316L SS coupons was welded and the weld area was severely attacked.

Indacochea, J. E.; Smith, J. L.; Litko, K. R.; Karell, E. J.; Raraz, A. G.; Chemical Engineering

2001-02-01T23:59:59.000Z

254

High energy-density water: density functional theory calculations of structure and electrical conductivity.  

SciTech Connect (OSTI)

Knowledge of the properties of water is essential for correctly describing the physics of shock waves in water as well as the behavior of giant planets. By using finite temperature density functional theory (DFT), we have investigated the structure and electronic conductivity of water across three phase transitions (molecular liquid/ ionic liquid/super-ionic/electronic liquid). There is a rapid transition to ionic conduction at 2000 K and 2 g/cm{sup 3} while electronic conduction dominates at temperatures above 6000 K. We predict that the fluid bordering the super-ionic phase is conducting above 4000 K and 100 GPa. Earlier work instead has the super-ionic phase bordering an insulating fluid, with a transition to metallic fluid not until 7000 K and 250 GPa. The tools and expertise developed during the project can be applied to other molecular systems, for example, methane, ammonia, and CH foam. We are now well positioned to treat also complex molecular systems in the HEDP regime of phase-space.

Desjarlais, Michael Paul; Mattsson, Thomas Kjell Rene

2006-03-01T23:59:59.000Z

255

The High-Z hydrogen-like atom: a model for polarized structure functions  

E-Print Network [OSTI]

The Dirac equation offers a precise analytical description of relativistic two-particle bound states, when one of the constituent is very heavy and radiative corrections are neglected. Looking at the high-Z hydrogen-like atom in the infinite momentum frame and treating the electron as a "parton", various properties usually attributed to the quark distributions in the nucleon are tested, in particular: Bj{\\o}rken scaling; charge, helicity, transversity and momentum sum rules; existence of the parton sea; Soffer inequality; correlation between spin and transverse momentum (Sivers and Boer-Mulders effects); transverse displacement of the center-of-charge and its connection with the magnetic moment. Deep inelastic experiments with photon or positron beams at MeV energies, analogous to DIS or Drell-Yan reactions, are considered.

X. Artru; K. Benhizia

2007-12-05T23:59:59.000Z

256

High temperature applications of structural ceramics. Quarterly progress report, July-September 1980  

SciTech Connect (OSTI)

Further studies of Tien's Si/sub 3/N/sub 4/ materials were conducted to obtain critical stress intensity factors and to clarify some inconsistencies in earlier results. Sialon specimens received from Kobayashi were annealed at 1430/sup 0/C for 60 hours with little degradation of the specimen. Billets of SiC materials were ordered from Norton and Carborundum. A literature survey of available data on fracture toughness, crack growth behavior, and creep of SiC, Si/sub 3/N/sub 4/, and sialon was completed. A preliminary crack growth mechanism map for commercial, hot pressed SiC materials was constructed from published information. X-ray analysis has been completed on 17 ..beta..-Si/sub 3/N/sub 4/ plus garnet samples before and after high temperature fracture testing.

Schneider, Samuel J.

1980-01-01T23:59:59.000Z

257

A tribological and biomimetic study of potential bone joint repair materials  

E-Print Network [OSTI]

microscope. Debris morphology and structure was investigated using a transmission electron microscope. The debris composition was analyzed using an X-ray diffractometer. Nanoindentation was incorporated to investigate the surface nanomechanical properties...

Ribeiro, Rahul

2009-05-15T23:59:59.000Z

258

Load test of the 277W Building high bay roof deck and support structure  

SciTech Connect (OSTI)

The 277W Building high bay roof area was load tested according to the approved load-test procedure, WHC-SD-GN-TP-30015, Revision 1. The 277W Building is located in the 200 West Area of the Hanford Site and has the following characteristics: roof deck -- wood decking supported by 4 x 14 timber purlins; roof membrane -- tar and gravel; roof slope -- flat (<10 deg); and roof elevation -- maximum height of about 63 ft. The 227W Building was visited in March 1994 for a visual inspection. During this inspection, cracked areas were visible in the decking, but it was not possible to determine whether these cracks extended completely through the decking, which is 2-in. thick. The building was revisited in March 1994 for the purpose of writing this test report. Because the roof requires personnel access, a test was determined to be the best way to qualify the roof. The conclusions are that the roof has been qualified for 500-lb total roof load and that the ``No Roof Access`` signs can be changed to ``Roof Access Restricted`` signs.

McCoy, R.M.

1994-12-02T23:59:59.000Z

259

Recent Progress in the Structure Determination of GPCRs, a Membrane Protein Family with High Potential as Pharmaceutical Targets  

SciTech Connect (OSTI)

G protein-coupled receptors (GPCRs) constitute a highly diverse and ubiquitous family of integral membrane proteins, transmitting signals inside the cells in response to an assortment of disparate extra-cellular stimuli. Their strategic location on the cell surface and their involvement in crucial cellular and physiological processes turn these receptors into highly important pharmaceutical targets. Recent technological developments aimed at stabilization and crystallization of these receptors have led to significant breakthroughs in GPCR structure determination efforts. One of the successful approaches involved receptor stabilization with the help of a fusion partner combined with crystallization in lipidic cubic phase (LCP). The success of using an LCP matrix for crystallization is generally attributed to the creation of a more native, membrane-like stabilizing environment for GPCRs just prior to nucleation and to the formation of type I crystal lattices, thus generating highly ordered and strongly diffracting crystals. Here they describe protocols for reconstituting purified GPCRs in LCP, performing pre-crystallization assays, setting up crystallization trials in manual mode, detecting crystallization hits, optimizing crystallization conditions, harvesting, and collecting crystallographic data. The protocols provide a sensible framework for approaching crystallization of stabilized GPCRs in LCP, however, as in any crystallization experiment, extensive screening and optimization of crystallization conditions as well as optimization of protein construct and purification steps are required. The process remains risky and these protocols do not necessarily guarantee success.

Cherezov, Vadim; Abola, Enrique; Stevens, Raymond C.

2012-05-09T23:59:59.000Z

260

The Crystal Structure of a High-Spin Oxoiron(IV) Complex and Characterization of Its Self-Decay Pathway  

SciTech Connect (OSTI)

[Fe{sup IV}(O)(TMG{sub 3}tren)]{sup 2+} (1; TMG{sub 3}tren = 1,1,1-tris{l_brace}2-[N{sup 2}-(1,1,3,3-tetramethylguanidino)]ethyl{r_brace}amine) is a unique example of an isolable synthetic S = 2 oxoiron(IV) complex, which serves as a model for the high-valent oxoiron(IV) intermediates observed in nonheme iron enzymes. Congruent with DFT calculations predicting a more reactive S = 2 oxoiron(IV) center, 1 has a lifetime significantly shorter than those of related S = 1 oxoiron(IV) complexes. The self-decay of 1 exhibits strictly first-order kinetic behavior and is unaffected by solvent deuteration, suggesting an intramolecular process. This hypothesis was supported by ESI-MS analysis of the iron products and a significant retardation of self-decay upon use of a perdeuteromethyl TMG{sub 3}tren isotopomer, d{sub 36}-1 (KIE = 24 at 25 C). The greatly enhanced thermal stability of d{sub 36}-1 allowed growth of diffraction quality crystals for which a high-resolution crystal structure was obtained. This structure showed an Fe=O unit (r = 1.661(2) {angstrom}) in the intended trigonal bipyramidal geometry enforced by the sterically bulky tetramethylguanidinyl donors of the tetradentate tripodal TMG{sub 3}tren ligand. The close proximity of the methyl substituents to the oxoiron unit yielded three symmetrically oriented short C-D {hor_ellipsis} O nonbonded contacts (2.38-2.49 {angstrom}), an arrangement that facilitated self-decay by rate-determining intramolecular hydrogen atom abstraction and subsequent formation of a ligand-hydroxylated iron(III) product. EPR and Moessbauer quantification of the various iron products, referenced against those obtained from reaction of 1 with 1,4-cyclohexadiene, allowed formulation of a detailed mechanism for the self-decay process. The solution of this first crystal structure of a high-spin (S = 2) oxoiron(IV) center represents a fundamental step on the path toward a full understanding of these pivotal biological intermediates.

England, J.; Guo, Y; Farquhar, E; Young, Jr., V; Münck, E; Que, Jr., L

2010-01-01T23:59:59.000Z

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


261

Human walking adaptations to distant limb mass disturbances : investigating biomimetic performance objectives  

E-Print Network [OSTI]

Online optimal trajectory planning is required in the control of humanoid robots, advanced prostheses, and impaired human limbs via functional neuromuscular stimulation . Optimization problems that involve complex, high ...

Swilling, Benjamin John

2005-01-01T23:59:59.000Z

262

Probing the Structure of Jet Driven Core-Collapse Supernova and Long Gamma Ray Burst Progenitors with High Energy Neutrinos  

E-Print Network [OSTI]

Times of arrival of high energy neutrinos encode information about their sources. We demonstrate that the energy-dependence of the onset time of neutrino emission in advancing relativistic jets can be used to extract important information about the supernova/gamma-ray burst progenitor structure. We examine this energy and time dependence for different supernova and gamma-ray burst progenitors, including red and blue supergiants, helium cores, Wolf-Rayet stars, and chemically homogeneous stars, with a variety of masses and metallicities. For choked jets, we calculate the cutoff of observable neutrino energies depending on the radius at which the jet is stalled. Further, we exhibit how such energy and time dependence may be used to identify and differentiate between progenitors, with as few as one or two observed events, under favorable conditions.

Imre Bartos; Basudeb Dasgupta; Szabolcs Marka

2012-09-20T23:59:59.000Z

263

Bioenergetics and mechanical actuation analysis with membrane transport experiments for use in biomimetic  

E-Print Network [OSTI]

Bioenergetics and mechanical actuation analysis with membrane transport experiments for use considers the mechanics and bioenergetics of a prototype nastic structure system consisting of an array by the hydrolysis of adenosine triphosphate. After reviewing the biochemistry and bioenergetics of the active

Giurgiutiu, Victor

264

Structure of a zeolite ZSM-5-Bithiophene complex as determined by high-resolution synchrotron X-ray powder diffraction  

SciTech Connect (OSTI)

The structure of a zeolite ZSM-5 complex with ca. 4 molecules/unit cell of bithiophene was determined by high-resolution synchrotron X-ray powder diffraction. In adopts monoclinic symmetry in space group P2{sub 1}/n ({alpha} unique) between room temperature and 25 K, with refined lattice parameters at 25 K of a = 20.0614(4), b = 19.8251(4), c = 13.3623(4) {Angstrom}, and a = 90.848(2){degrees}. Structural modeling and Rietveld refinements showed that there are two crystallographically unique bithiophene molecules, each with an occupancy factor of ca. 0.5. One bithiophene is localized at the center of the straight channels with one of the rings residing at the intersection with the sinusoidal channels. The other molecule lies in the sinusoidal channels and projects partially into the straight channels. The relationship between polythiophene chain length and the formation of conducting polythiophene molecular wires in the ZSM-5 framework is discussed. 32 refs., 4 figs., 3 tabs.

Eylem, C.; Hriljac, J.A. [Brookhaven National Laboratory, Upton, NY (United States)] [Brookhaven National Laboratory, Upton, NY (United States); Ramamurthy, V.; Corbin, D.R. [Du Pont Co., Wilmington, DE (United States)] [Du Pont Co., Wilmington, DE (United States); Parise, J.B. [State Univ. of New York, Stony Brook, NY (United States)] [State Univ. of New York, Stony Brook, NY (United States)

1996-04-01T23:59:59.000Z

265

Highly polarized structures in the near-nuclear regions of Cygnus A: intrinsic anisotropy within the cones?  

E-Print Network [OSTI]

We present near-IR imaging polarimetry observations of the nucleus of Cygnus A, taken with the NICMOS camera of the HST at a wavelength of 2.0 microns.These maps reveal a highly collimated region of polarized emission straddling the nucleus and extending to a radius of 1.2 arcseconds. Remarkably, this feature coincides with one, but only one, limb of the edge-brightened bicone structure seen in the total intensity image. The high degree (P_k ~ 25%) and orientation of the extended polarization feature are consistent with a scattering origin. Most plausibly, the detection of polarization along only one limb of the bicone is a consequence of intrinsic anisotropy of the near-IR continuum within the radiation cones, with the direction of maximum intensity of the near-IR radiation field significantly displaced from the direction of the radio axis. The unresolved nuclear core source is also highly polarized (P_k > 28%), with a position angle close to the perpendicular to the radio axis. Given that this high degree of nuclear polarization can only be explained in terms of dichroic extinction if the dichroic mechanism is unusually efficient in Cygnus A, it is more likely that the nuclear polarization is due to the scattering of nuclear light in an unresolved scattering region close to the AGN. In this case, the flux of the core source in the K-band is dominated by scattered rather than transmitted quasar light, and previous extinction estimates based on K-band photometry of the core substantially underestimate the true nuclear extinction.

C. N. Tadhunter; W. Sparks; D. J. Axon; L. Bergeron; N. J. Jackson; C. Packham; J. H. Hough; A. Robinson; S. Young

2000-02-08T23:59:59.000Z

266

Micro-Structured Sapphire Fiber Sensors for Simultaneous Measurements of High-T and Dynamic Gas Pressure in Harsh Environments  

SciTech Connect (OSTI)

This is the final report for the program “Micro-Structured Sapphire Fiber Sensors for Simultaneous Measurements of High Temperature and Dynamic Gas Pressure in Harsh Environments”, funded by NETL, and performed by Missouri University of Science and Technology, Clemson University and University of Cincinnati from October 1, 2009 to September 30, 2014. Securing a sustainable energy economy by developing affordable and clean energy from coal and other fossil fuels is a central element to the mission of The U.S. Department of Energy’s (DOE) National Energy Technology Laboratory (NETL). To further this mission, NETL funds research and development of novel sensor technologies that can function under the extreme operating conditions often found in advanced power systems. The main objective of this research program is to conduct fundamental and applied research that will lead to successful development and demonstration of robust, multiplexed, microstructured silica and single-crystal sapphire fiber sensors to be deployed into the hot zones of advanced power and fuel systems for simultaneous measurements of high temperature and gas pressure. The specific objectives of this research program include: 1) Design, fabrication and demonstration of multiplexed, robust silica and sapphire fiber temperature and dynamic gas pressure sensors that can survive and maintain fully operational in high-temperature harsh environments. 2) Development and demonstration of a novel method to demodulate the multiplexed interferograms for simultaneous measurements of temperature and gas pressure in harsh environments. 3) Development and demonstration of novel sapphire fiber cladding and low numerical aperture (NA) excitation techniques to assure high signal integrity and sensor robustness.

Xiao, Hai; Tsai, Hai-Lung; Dong, Junhang

2014-09-30T23:59:59.000Z

267

STANFORD, KIRK ALAN. Strengthening of Steel Structures with High Modulus Carbon Fiber Reinforced Polymers (CFRP) Materials: Bond and Development Length Study.  

E-Print Network [OSTI]

ABSTRACT STANFORD, KIRK ALAN. Strengthening of Steel Structures with High Modulus Carbon Fiber. The current research program proposed the use of a new high modulus carbon fiber reinforced polymer (CFRP-up of carbon fiber sheets and the adhesives for bonding of pre-cured laminate strips. The bond behavior of FRP

268

Structure and high-temperature properties of Ti{sub 5}Si{sub 3} with interstitial additions  

SciTech Connect (OSTI)

This study was motivated by the fact that previous research on the structure and properties of Ti{sub 5}Si{sub 3} showed unacceptably inconsistent results. The primary reason for these inconsistencies was interstitial contamination of Ti{sub 5}Si{sub 3} by carbon, nitrogen and oxygen. Thus, this study measured the effects that these interstitial atoms have on some of the previously reported properties. These properties include crystalline structure, thermal expansion anisotropy, electronic structure and bonding, and high temperature oxidation resistance. In Chapter 2 of this study, the lattice parameters and atomic positions of Ti{sub 5}Si{sub 3} as a function of carbon, nitrogen or oxygen content were measured via x-ray and neutron diffraction. Comparing these lattice parameters to those reported in other studies on supposedly pure Ti{sub 5}Si{sub 3} confirmed that the majority of the previous studies had samples with a considerable amount of interstitial impurities. In fact, the lattice parameter trends given in Chapter 2 can be used to estimate the types and level of impurities in these studies. Furthermore, Chapter 2 discusses how atomic positions change as interstitial atoms are incorporated into the lattice. These changes in atomic separations suggest that strong bonds form between the interstitial atoms and the surrounding titanium atoms. This is in full agreement with the electronic structure calculations given in Chapter 4. These calculations show that bonding does occur between titanium d-states and interstitial atom p-states at the expense of bonding between some of the titanium and silicon atoms. In addition, carbon seems to be the most strongly bonded interstitial atom. Knowledge of the exact interstitial content and its effect on bonding is important because Chapters 3 and 5 have shown that interstitial atoms have a marked effect on the thermal expansion and oxidation resistance. As discussed in Chapter 3, all interstitial atoms lower the thermal expansion anisotropy of Ti{sub 5}Si{sub 3} due to the formation of bonds between the interstitial atom and the surrounding titanium atoms. Although interstitial atoms do have an effect on the thermal expansion of Ti{sub 5}Si{sub 3}, these effects were not strong enough to explain all the scatter of previous studies. These studies most likely suffered from systematic errors as a result of poor experimental design. The experimental procedure used in this study was designed to significantly reduce these systematic errors.

Williams, Jason

1999-12-01T23:59:59.000Z

269

Development of conducting polymer based biomimetic muscles and fabrication techniques for an artificial pectoral fish fin  

E-Print Network [OSTI]

Fish possess a greater degree of agility, maneuverability, and energy efficiency over current underwater vehicles constructed by engineers. Kinematics studies show that a high degree of three-dimensional control of multiple ...

Davidson, S. Naomi (Sarah Naomi)

2005-01-01T23:59:59.000Z

270

A framework for design, modeling, and identification of compliant biomimetic swimmers  

E-Print Network [OSTI]

Research interests in fish-like devices are generally driven by the notion that through eons of evolution fish have developed optimal mechanisms for efficient propulsion and high degrees of maneuverability. Engineered ...

Wahab, Adam Joseph

2008-01-01T23:59:59.000Z

271

Modular Lorentz force actuators for efficient biomimetic propulsion of Autonomous Underwater Vehicles  

E-Print Network [OSTI]

In this thesis, we developed a highly scalable design for modular Lorentz force actuators for use in segmented flexible-hull undersea vehicles such as the RoboTuna being developed at Franklin W, Olin College of Engineering. ...

Church, Joseph Christopher

2014-01-01T23:59:59.000Z

272

Structural and electrochemical properties of nanostructured nickel silicides by reduction and silicification of high-surface-area nickel oxide  

SciTech Connect (OSTI)

Graphical abstract: Nanostructured nickel silicides have been synthesized by reduction and silification of high-surface-area nickel oxide, and exhibited remarkably like-noble metal property, lower electric resistivity, and ferromagnetism at room temperature. Highlights: Black-Right-Pointing-Pointer NiSi{sub x} have been prepared by reduction and silification of high-surface-area NiO. Black-Right-Pointing-Pointer The structure of nickel silicides changed with increasing reaction temperature. Black-Right-Pointing-Pointer Si doping into nickel changed the magnetic properties of metallic nickel. Black-Right-Pointing-Pointer NiSi{sub x} have remarkably lower electric resistivity and like-noble metal property. -- Abstract: Nanostructured nickel silicides have been prepared by reduction and silicification of high-surface-area nickel oxide (145 m{sup 2} g{sup -1}) produced via precipitation. The prepared materials were characterized by nitrogen adsorption, X-ray diffraction, thermal analysis, FT-IR spectroscopy, scanning electron microscopy, transmission electron microscopy, magnetic and electrochemical measurements. The nickel silicide formation involves the following sequence: NiO (cubic) {yields} Ni (cubic) {yields} Ni{sub 2}Si (orthorhombic) {yields} NiSi (orthorhombic) {yields} NiSi{sub 2} (cubic), with particles growing from 13.7 to 21.3 nm. The nickel silicides are ferromagnetic at room temperature, and their saturation magnetization values change drastically with the increase of Si content. Nickel silicides have remarkably low electrical resistivity and noble metal-like properties because of a constriction of the Ni d band and an increase of the electronic density of states. The results suggest that such silicides are promising candidates as inexpensive yet functional materials for applications in electrochemistry as well as catalysis.

Chen, Xiao [Laboratory of Advanced Materials and Catalytic Engineering, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024 (China)] [Laboratory of Advanced Materials and Catalytic Engineering, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024 (China); Zhang, Bingsen [Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society (Germany)] [Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society (Germany); Li, Chuang; Shao, Zhengfeng [Laboratory of Advanced Materials and Catalytic Engineering, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024 (China)] [Laboratory of Advanced Materials and Catalytic Engineering, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024 (China); Su, Dangsheng [Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society (Germany)] [Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society (Germany); Williams, Christopher T. [Department of Chemical Engineering, Swearingen Engineering Center, University of South Carolina (United States)] [Department of Chemical Engineering, Swearingen Engineering Center, University of South Carolina (United States); Liang, Changhai, E-mail: changhai@dlut.edu.cn [Laboratory of Advanced Materials and Catalytic Engineering, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024 (China)] [Laboratory of Advanced Materials and Catalytic Engineering, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024 (China)

2012-03-15T23:59:59.000Z

273

Biomimetic Actinide Chelators: An Update on the Preclinical Development of the Orally Active Hydroxypyridonate Decorporation Agents 3,4,3-LI(1,2-HOPO) and 5-LIO(Me-3,2-HOPO)  

SciTech Connect (OSTI)

The threat of a dirty bomb or other major radiological contamination presents a danger of large-scale radiation exposure of the population. Because major components of such contamination are likely to be actinides, actinide decorporation treatments that will reduce radiation exposure must be a priority. Current therapies for the treatment of radionuclide contamination are limited and extensive efforts must be dedicated to the development of therapeutic, orally bioavailable, actinide chelators for emergency medical use. Using a biomimetic approach based on the similar biochemical properties of plutonium(IV) and iron(III), siderophore-inspired multidentate hydroxypyridonate ligands have been designed and are unrivaled in terms of actinide-affinity, selectivity, and efficiency. A perspective on the preclinical development of two hydroxypyridonate actinide decorporation agents, 3,4,3-LI(1,2-HOPO) and 5-LIO(Me-3,2-HOPO), is presented. The chemical syntheses of both candidate compounds have been optimized for scale-up. Baseline preparation and analytical methods suitable for manufacturing large amounts have been established. Both ligands show much higher actinide-removal efficacy than the currently approved agent, diethylenetriaminepentaacetic acid (DTPA), with different selectivity for the tested isotopes of plutonium, americium, uranium and neptunium. No toxicity is observed in cells derived from three different human tissue sources treated in vitro up to ligand concentrations of 1 mM, and both ligands were well tolerated in rats when orally administered daily at high doses (>100 micromol kg d) over 28 d under good laboratory practice guidelines. Both compounds are on an accelerated development pathway towards clinical use.

Durbin, Patricia W.; Kullgren, Birgitta; Ebbe, Shirley N.; Xu, Jide; Chang, Polly Y.; Bunin, Deborah I.; Blakely, Eleanor A.; Bjornstad, Kathleen A.; Rosen, Chris J.; Shuh, David K.; Raymond, Kenneth N.

2011-07-13T23:59:59.000Z

274

A Biomimetic Adaptive Algorithm and Low-Power Architecture for Implantable Neural Decoders  

E-Print Network [OSTI]

a bank of adaptive linear filters with kernels that emulate synaptic dynamics. The filters trans- form in cochlear-implant systems, include unwanted heat dissipation in the brain, decreased longevity of batteries han- dle large quantities of high-bandwidth analog data, processing neural input signals in a slow-and-parallel

Sarpeshkar, Rahul

275

Biomimetic Sampling Architectures for CMOS Image Sensors Fayal Saffih*a  

E-Print Network [OSTI]

sensor1 . The processing integration on the same chip, in addition to offering low cost and high (or row) at the end of image capture, the scan returns from the outer ring towards the first inner fabricated in 0.18µm CMOS technology are presented and discussed. We will also present a multi

Hornsey, Richard

276

Couples Magnetic and Structural Transitions in High-Purity Dy and Gd5SbxGe4-x  

SciTech Connect (OSTI)

Magnetic materials exhibiting magnetic phase transitions simultaneously with structural rearrangements of their crystal lattices hold a promise for numerous applications including magnetic refrigeration, magnetomechanical devices and sensors. We undertook a detailed study of a single crystal of dysprosium metal, which is a classical example of a system where magnetic and crystallographic sublattices can be either coupled or decoupled from one another. Magnetocaloric effect, magnetization, ac magnetic susceptibility, and heat capacity of high purity single crystals of dysprosium have been investigated over broad temperature and magnetic field intervals with the magnetic field vector parallel to either the a- or c-axes of the crystal. Notable differences in the behavior of the physical properties when compared to Dy samples studied in the past have been observed between 110 K and 125 K, and between 178 K and {approx}210 K. A plausible mechanism based on the formation of antiferromagnetic clusters in the impure Dy has been suggested in order to explain the reduction of the magnetocaloric effect in the vicinity of the Neel point. Experimental and theoretical investigations of the influence of commensurability effects on the magnetic phase diagram and the value of the magnetocaloric effect have been conducted. The presence of newly found anomalies in the physical properties has been considered as evidence of previously unreported states of Dy. The refined magnetic phase diagram of dysprosium with the magnetic field vector parallel to the a-axis of a crystal has been constructed and discussed. The magnetic and crystallographic properties of Gd{sub 5}Sb{sub x}Ge{sub 4-x} pseudo-binary system were studied by x-ray diffraction (at room temperature), heat capacity, ac-magnetic susceptibility, and magnetization in the temperature interval 5-320 K in magnetic fields up to 100 kOe. The magnetic properties of three composition (x = 0.5, 1,2) were examined in detail. The Gd{sub 5}Sb{sub 2}Ge{sub 2} compound that adopts Tm{sub 5}Sb{sub 2}Si{sub 2}-type of structure (space group is Cmca), shows a second order FM-PM transition at 200 K, whereas Gd{sub 5}Sb{sub x}Ge{sub 4-x} compounds for x = 0.5 and x = 1 (Sm{sub 5}Ge{sub 4}-type of structure, space group is Pnma) exhibit first order phase transformations at 45 K and 37 K, respectively.

Alexander S. Chernyshov

2006-08-09T23:59:59.000Z

277

Insights into Stress Corrosion Cracking Mechanisms from High-Resolution Measurements of Crack-Tip Structures and Compositions  

SciTech Connect (OSTI)

The fundamental basis for mechanistic understanding and modeling of SCC remains in question for many systems. Specific mechanisms controlling SCC can vary with changes in alloy characteristics, applied/residual stress or environmental conditions. The local crack electrochemistry, crack-tip mechanics and material metallurgy are the main factors controlling crack growth. These localized properties are difficult or impossible to measure in active cracks. Nevertheless, it is essential to quantitatively interrogate these crack-tip conditions if mechanistic understanding is to be obtained. A major recent advance has been the ability to investigate SCC cracks and crack tips using high-resolution ATEM techniques. ATEM enables the characterization of SCC cracks including trapped tip solution chemistries, corrosion product/film compositions and structures, and elemental composition gradients and defect microstructures along the crack walls and at the crack tip. A wide variety of methods for imaging and analyses at resolutions down to the atomic level can be used to examine the crack and corrosion film characteristics. Surface films and reaction layers have been examined by cross-sectional TEM techniques, but little work had been conducted on environmentally induced internal cracks until that of Lewis and co-workers [1-3] and the current authors [4-17]. This capability combined with modern ATEM techniques has enabled exciting new insights into corrosion processes occurring at buried interfaces and is being used to identify mechanisms controlling IGSCC in boiling water reactor (BWR) and pressurized water reactor (PWR) components. The objective of this paper is to summarize certain results focused on IGSCC of Fe- base and Ni-base stainless alloys in high-temperature water environments. Representative crack-tip examples will be shown to illustrate specific aspects that are characteristic of SCC in the material/environment combinations. Differences and similarities in crack-tip structures- chemistries will be highlighted comparing Fe-base 316/304SS to Ni-base alloy 600/182 and for tests in oxidizing versus hydrogenated water environments.

Bruemmer, Stephen M.; Thomas, Larry E.

2010-04-05T23:59:59.000Z

278

A two-dimensional fluid-structure coupling algorithm for the interaction of high-speed flows with open shells  

E-Print Network [OSTI]

The design of future light aerospace structures will require numerical tools to accurately describe the strongly coupled dynamics of the interactions between a light structure and a flow surrounding it. Specific examples ...

Tam, Daniel See Wai, 1980-

2004-01-01T23:59:59.000Z

279

The high pressure synthesis and structure of a new aurate, CaAu{sub 2}O{sub 4}  

SciTech Connect (OSTI)

A novel aurate CaAu{sub 2}O{sub 4} has been synthesized by high pressure-temperature technique. The sample was contained in an Au capsule and heated to 1000{approximately}1200{degrees}C at 12{approximately}15 GPa in the split-sphere multi-anvil apparatus (USSA-2000). Electron probe Microanalysis of small crystals indicated an oxide ratio of 0.96(6) CaO:1.01(2) Au{sub 2}O{sub 3}. The compound is pale yellow, with a = 5.991141(1), c = 10.04983(3) {angstrom}, Z = 4, 14{sub 1}/a. The structure was solved using both synchroton x-ray powder diffraction and single crystal x-ray data. It consists of corner-linked AuO{sub 4} square planes and distorted CaO{sub 8} dodecahedra; in the figure Ca{sup 2+} ions (circles) are filled in the cavities surrounded by staggered square planar AuO{sub 4} units.

Park, J.H.; Parise, J.B. [State Univ. of New York, Stony Brook, NY (United States)

1995-12-31T23:59:59.000Z

280

Structure-Property Relationship for Two-Photon Absorbing Multiporphyrins: Supramolecular Assembly of Highly-Conjugated Multiporphyrinic Ladders and Prisms  

SciTech Connect (OSTI)

Two-photon absorption (TPA) phenomena of a series of single-strand as well as supramolecular self-assembled ladders and prisms of highly conjugated ethyne bridged multiporphyrin dimer, trimer, and star shaped pentamer have been investigated. The ligand mediated self-assembled supramolecular structures were characterized by UV-visible spectroscopy and small- and wide-angle X-ray scattering (SAXS/WAXS) analysis. The TPA cross section values of multiporphyrins increase nonlinearly from {approx}100 to {approx}18000 GM with an increased number of porphyrin units and elongated ?-conjugation length by virtue of charge transfer and excited-state cumulenic configurations. The observed opposite TPA behavior between their supramolecular ladder and prism configurations necessitates the importance of interstrand interactions between the multiporphyrinic units and the overall shape of the assembly. Furthermore, the diminished TPA cross section of the pentamer, despite the increased ?-conjugation resulting from duplex formation suggests that destabilizing the essential functional configurations at the cost of elongation of ?-delocalization pathway must cause unfavorable effects. We have also shown that one- and two-photon allowed energy-levels of linear multiporphyrins are nearly isoenergetic and the latter transition originates exclusively from the extent of ?-delocalization within the molecule. The identical TPA maximum position of the trimer and pentamer indicates that the TPA of the pentamer arises only from its basic trimer unit in spite of its extended two-dimensional {pi}-conjugation pathway involving five porphyrinic units.

Easwaramoorthi, Shanmugam; Jang, So Young; Yoon, Zin Seok; Lim, Jong Min; Lee, Cheng-Wei; Mai, Chi-Lun; Liu, Yen-Chun; Yeh, Chen-Yu; Vura-Weis, Josh; Wasielewski, Michael R.; Kim, Dongho (NWU); (Yonsei); (NSHU)

2008-10-03T23:59:59.000Z

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


281

Scope and limitations of high energy electron scattering in obtaining relevant structural information about atoms and molecules  

SciTech Connect (OSTI)

During the course of this work experiments were undertaken to measure the scattering cross-sections for high energy electrons scattering from various target systems. The experiments can be broadly classified into two categories, one dealing with rather small systems and the other dealing with large systems (at least in the view of physicists). Although the experimental aspects, in so much as the experimental measurement of the intensities of the scattered electron is concerned, is the same for both the cases the motivation for performing the experiment is totally different. In the first case, simple atomic and molecular target systems, namely He, H/sub 2/ and D/sub 2/, are used. For such systems, good theoretical framework is available and critical comparisons of experimental cross sections are made with theoretical predictions. Attention is focussed mainly at small momentum transfer (up to 10A/sup -1/), and correlation and binding effects are studied. In the second case, somewhat larger molecular systems, namely naphthalene, anthraquinone, anthracene and dichromium tetraacetate are used. For such systems attention is focused at large momentum transfer (from 10 to 25 A/sup -1/) to obtain structural information about the molecules.

Ketkar, S.N.

1984-01-01T23:59:59.000Z

282

A General Methodology for Introducing Structured Nonorthogonal Grids into High-Order Finite-Difference Time-Domain Methods  

E-Print Network [OSTI]

. The method employs a coordinate transformation to map an arbitrary nonorthogonal structured grid onto transformation is used to map an arbitrary nonorthogonal structured grid onto a rectangular grid with uniformly rectangular grid can be used to carry out the time stepping. Generating a coordinate transformation to map one

283

Low-loss bloch wave guiding in open structures and highly compact efficient waveguide-crossing arrays  

DOE Patents [OSTI]

Low-loss waveguide structures may comprise a multimode waveguide supporting a periodic light intensity pattern, and attachments disposed at the waveguide adjacent low-intensity regions of the light intensity pattern.

Popovic, Milos

2011-03-08T23:59:59.000Z

284

Adding 3D-structural context to protein-protein interaction data from high-throughput experiments   

E-Print Network [OSTI]

derived from functional genomics experiments, by building upon existing structural information about direct physical PPIs. Secondary aims were (i) to demonstrate the utility of the new resource, and (ii) its application in biological research. We created a...

Jüttemann, Thomas

2011-11-24T23:59:59.000Z

285

High-pressure synthesis and crystal structure of CaFeTi{sub 2}O{sub 6}, a new perovskite structure type  

SciTech Connect (OSTI)

Single-crystal and powder samples of a new calcium iron (II) titanate, CaFeTi{sub 2}O{sub 6}, have been synthesized at 12-15 GPa and 1200-1400{degrees}C, and studied by X-ray diffraction. This compound is a variant of the perovskite structure and crystallizes in the tetragonal space group P4{sub 2}/nmc, a = 7.5157(2) {angstrom}, c = 7.5548(2) {angstrom}, and z = 4. Calcium and two iron atoms are ordered on three different A sites, with calcium in approximately 10-fold coordination, with one iron atom in tetrahedral coordination (Fe-O = 2.084(2) {angstrom}), and the other iron atom in square-planar coordination (Fe-O = 2.097(2) {angstrom}). The system of octahedral tilts which this compound adopts has not been observed previously in a perovskite. The tilt system was described in a theoretical treatment of perovskites a{sup +}a{sup +}c{sup {minus}} in the notation of A. M. Glazer and was (incorrectly) assigned to space group Pmmn.

Leinenweber, K.; Parise, J. [Univ. at Stony Brook, NY (United States)] [Univ. at Stony Brook, NY (United States)

1995-01-01T23:59:59.000Z

286

2D and 3D periodic templates through holographic interference lithography : photonic and phononic crystals and biomimetic microlens arrays  

E-Print Network [OSTI]

In this thesis a simple technique for controlling structure via holographic interference lithography was established and implemented. Access to various space groups including such important structures as the level set ...

Ullal, Chaitanya K. (Chaitanya Kishore)

2005-01-01T23:59:59.000Z

287

Structural studies of alkali methylidyne radicals: High resolution spectroscopy of NaCH and KCH ,,X~ 3  

E-Print Network [OSTI]

Institute of Physics. S0021-9606 99 02605-7 I. INTRODUCTION The interaction of metals with organic molecules, especially those involving lithium, sodium, and potassium.6 The usefulness of organolithium compounds and therefore concern oligomeric structures. Evaluating the properties of even the simplest organoalkali

Ziurys, Lucy M.

288

High-Resolution Mn EXAFS of the Oxygen-Evolving Complex inPhotosystem II: Structural Implications for the Mn4Ca Cluster  

SciTech Connect (OSTI)

The biological generation of oxygen by the oxygen-evolving complex in photosystem II (PS II) is one of natures most important reactions. The recent X-ray crystal structures, while limited by resolutions of 3.2 to 3.5 A, have located the electron density associated with the Mn4Ca complex within the multi-protein PS II complex. Detailed structures critically depend on input from spectroscopic techniques such as EXAFS and EPR/ENDOR, as the XRD resolution does not allow for accurate determination of the position of Mn/Ca or the bridging and terminal ligand atoms. The number and distances of Mn-Mn/Ca/ligand interactions determined from EXAFS provide important constraints for the structure of the Mn cluster. Here we present data from a high-resolution EXAFS method using a novel multi-crystal monochromator that show three short Mn-Mn distances between 2.7 and 2.8 A and hence the presence of three di-mu-oxobridged units in the Mn4Ca cluster. This result imposes clear limitations on the proposed structures based on spectroscopic and diffraction data and provides input for refining such structures.

Yano, Junko; Pushkar, Yulia; Glatzel, Pieter; Lewis, Azul; Sauer,Kenneth; Messinger, Johannes; Bergmann, Uwe; Yachandra, Vittal

2005-09-06T23:59:59.000Z

289

Highly Insulating Glazing Systems using Non-Structural Center Glazing Dariush Arasteh, Howdy Goudey, and Christian Kohler  

E-Print Network [OSTI]

units with two low-e coatings and an effective gas fill are known to be highly insulating, with center technological routes have emerged: - Aerogel is a micro-porous insulating material currently under R&D worldwide

290

The surface structure of SrTiO{sub 3} at high temperatures under influence of oxygen  

SciTech Connect (OSTI)

We use low energy electron microscopy to investigate the structure of the SrTiO{sub 3} (001) surface at elevated temperatures and different oxygen pressures. Upon varying the temperature between 500?°C and 900?°C in oxygen pressures ranging from 10{sup ?9} millibar to 10{sup ?4} millibar, two surface transitions are found to be present. The lower temperature (1 × 1) ? (2 × 1) transition that is known to occur in ultrahigh vacuum can be reversed by increasing the oxygen pressure. At higher temperatures, we observe a (2 × 1) ? disordered (1 × 1) transition which is irreversible in the experimental parameter range. The observations are expected to have a strong bearing on the growth of interface structures.

Hesselberth, M. B. S.; Molen, S. J. van der; Aarts, J. [Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden (Netherlands)

2014-02-03T23:59:59.000Z

291

A conformational transition in the structure of a 2'-thiomethyl-modified DNA visualized at high resolution  

SciTech Connect (OSTI)

Crystal structures of A-form and B-form DNA duplexes containing 2'-S-methyl-uridines reveal that the modified residues adopt a RNA-like C3'-endo pucker, illustrating that the replacement of electronegative oxygen at the 2'-carbon of RNA by sulfur does not appear to fundamentally alter the conformational preference of the sugar in the oligonucleotide context and sterics trump stereoelectronics.

Pallan, Pradeep S.; Prakash, Thazha P.; Li, Feng; Eoff, Robert L.; Manoharan, Muthiah; Egli, Martin; (Isis Pharm.); (Alnylam Pharm.); (Vanderbilt)

2009-06-17T23:59:59.000Z

292

Ab initio studies of high-pressure structural transformations in silica B. B. Karki and M. C. Warren  

E-Print Network [OSTI]

CaCl2 phase occurs at 47 GPa, the transition from the CaCl2 to the Pnc2 structure at 98 GPa of the rutile and CaCl2 phases are determined as a function of pressure. The results are in excellent agreement. In situ Raman spectroscopy3 has revealed the rutile- to-CaCl2 transition at about 50 GPa which is much

Stixrude, Lars

293

High resolution seismic and paleomagnetic study of the structure and sedimentation of Sweet and Phleger Banks, northern Gulf of Mexico  

E-Print Network [OSTI]

Core Analysis Geologic Descriptions Magnetic Analysis CHAPTER IV DISCUSSION 70 70 73 77 Stratigraphy . Unit 1 . 77 77 Unit 2 79 Unit 3 81 Structure 83 Phleger Bank Dome Development Sweet Bank Dome Development Radial Faults Magnetic... of resolution. The bathymetry data was then plotted and contoured at a 10 m interval. This interva! was fine enough to reveal the details of dome shape, but broad enough to allow for navigation errors. Seismic Stratigraphy The seismic stratigraphic analysis...

Singleton, Scott Wayne

1988-01-01T23:59:59.000Z

294

The Need For High Resolution In Studies Of The 3-D Magnetic Field Structure Of AGN Jets  

E-Print Network [OSTI]

We are using "broadband" (4.6 to 43 GHz) multi-frequency VLBA polarization observations of compact AGN to investigate the 3-D structure of their jet magnetic (B) fields. Observing at several frequencies, separated by short and long intervals, enables reliable determination of the distribution of Faraday Rotation, and thereby the intrinsic B field structure. Transverse Rotation Measure (RM) gradients were detected in the jets of 0954+658 and 1418+546, providing evidence for the presence of a helical B field surrounding the jet. The RM in the core regions of 2200+420 (BL Lac), 0954+658 and 1418+546 display different signs in different frequency-intervals (on different spatial scales); we suggest an explanation for this in terms of modest bends in a helical B field surrounding their jets. In future, polarization observations with a combination of VSOP-2 at 8, 22 and 43 GHz and ground arrays at frequencies with corresponding resolution will help map out the distributions of Faraday rotation, spectral index and the 3-D B field structure both across the jet and closer to the central engine, providing strong constraints for any jet B field models.

Shane P. O'Sullivan; Denise C. Gabuzda

2008-01-31T23:59:59.000Z

295

High pressure synthesis and crystal structure of a ternary superconductor Ca{sub 2}Al{sub 3}Si{sub 4} containing layer structured calcium sub-network isomorphous with black phosphorus  

SciTech Connect (OSTI)

The Zintl compound CaAl{sub 2}Si{sub 2} is peritectically decomposed to a mixture of Ca{sub 2}Al{sub 3}Si{sub 4} and aluminum metal at temperatures above 600 Degree-Sign C under a pressure of 5 GPa. The new ternary compound Ca{sub 2}Al{sub 3}Sl{sub 4} crystalizes with the space group Cmc2{sub 1} and the lattice parameters a=5.8846(8), b=14.973(1), and c=7.7966(5) A. The structure is composed of aluminum silicide framework [Al{sub 3}Si{sub 4}] and layer structured [Ca{sub 2}] network interpenetrating with each other. The electron probe microanalysis (EPMA) shows the formation of solid solutions Ca{sub 2}Al{sub 3-x}Si{sub 4+x} (x<0.6). The layer structured [Ca{sub 2}] sub-network is isomorphous with black phosphorus. The new ternary compound shows superconductivity with a transition temperature (T{sub c}) of 6.4 K. The band structure calculation suggests that the superconductivity should occur through the conduction bands mainly composed of 3p orbitals of the aluminum silicide framework. - Graphical abstract: A new ternary superconductor Ca{sub 2}Al{sub 3}Si{sub 4} has been prepared under high pressure and high temperature conditions, which includes layer structured calcium sub-network isomorphous with black phosphorus. Highlights: Black-Right-Pointing-Pointer A typical Zintl compound CaAl{sub 2}Si{sub 2} melts congruently at ambient pressure. Black-Right-Pointing-Pointer Under high pressure CaAl{sub 2}Si{sub 2} decomposes to Ca{sub 2}Al{sub 3}Si{sub 4} and Al at {approx}600 Degree-Sign C. Black-Right-Pointing-Pointer Ca{sub 2}Al{sub 3}Si{sub 4} contains Ca sub-network isomorphous with black phosphorus. Black-Right-Pointing-Pointer Ca{sub 2}Al{sub 3}Si{sub 4} shows superconductivity with a transition temperature of 6.4 K.

Tanaka, Masashi; Zhang, Shuai; Tanaka, Yuki; Inumaru, Kei [Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527 (Japan)] [Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527 (Japan); Yamanaka, Shoji, E-mail: syamana@hiroshima-u.ac.jp [Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527 (Japan)] [Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527 (Japan)

2013-02-15T23:59:59.000Z

296

Effects of the amorphous oxide intergranular layer structure and bonding on the fracture toughness of a high purity silicon nitride  

SciTech Connect (OSTI)

The microstructural evolution and structural characteristics and transitions in the thin grain-boundary oxide films in a silicon nitride ceramic, specifically between two adjacent grains and not the triple junctions, are investigated to find their effect on the macroscopic fracture properties. It is found that by heat treating a model Si3N4-2wt percent Y2O3 ceramic for {approx}200 hr at 1400 degrees C in air, the fracture toughness can be increased by {approx}100 percent, coincident with a change in fracture mechanism from transgranular to intergranular.

Ziegler, A.; Kisielowski, C.; Hoffmann, M.J.; Ritchie, R.O.

2002-11-18T23:59:59.000Z

297

The ultimate structure of matter: The high energy physics program from the 1950s through the 1980s  

SciTech Connect (OSTI)

This discusses the following topics in High Energy Physics: The Particle Zoo; The Strong and the Weak; The Particle Explosion; Deep Inside the Nucleon; The Search for Unity; Physics in Collision; The Standard Model; Particles and the Cosmos; and Practical Benefits.

Not Available

1990-02-01T23:59:59.000Z

298

Self-Assembly of Virus-Structured High Surface Area Nanomaterials and Their Application as Battery Electrodes  

E-Print Network [OSTI]

. In Final Form: October 12, 2007 High area nickel and cobalt surfaces were assembled using modified Tobacco-fold increase in surface area. Electroless deposition of ionic metals onto surface-assembled virus templates produced uniform metal coatings up to 40 nm in thickness. Within a nickel-zinc battery system

Rubloff, Gary W.

299

High quality InGaAsP/InP multiple quantum well modulator structures for 1.3 and 1.5 {micro}m applications  

SciTech Connect (OSTI)

The authors report on high quality InGaAsP/InP multiple quantum well structures grown by chemical beam epitaxy with absorption at the 1.3 to 1.5{micro}m range. Transmission profiles with remarkable excitonic features and sharply defined absorption edges for p-i-n samples with as many as 200 periods are shown to be achievable. Very sharp satellite peaks with linewidth comparable with that from the substrate are shown in the x-ray diffraction. The authors use a new method to monitor the substrate temperature which shows excellent results in terms of homogeneity of layer thickness and composition even for structures with a large number periods.

Mendonca, C.A.C. [Univ. Estadual de Campinas-IFGW-DFA-LPD, Sao Paulo (Brazil); Chiu, T.H. [AT and T Bell Labs., Holmdel, NJ (United States)

1996-12-31T23:59:59.000Z

300

Dynamic response of Cu4Zr54 metallic glass to high strain rate shock loading: plasticity, spall and atomic-level structures  

SciTech Connect (OSTI)

We investigate dynamic response of Cu{sub 46}Zr{sub 54} metallic glass under adiabatic planar shock wave loading (one-dimensional strain) wjth molecular dynamics simulations, including Hugoniot (shock) states, shock-induced plasticity and spallation. The Hugoniot states are obtained up to 60 CPa along with the von Mises shear flow strengths, and the dynamic spall strength, at different strain rates and temperatures. The spall strengths likely represent the limiting values achievable in experiments such as laser ablation. For the steady shock states, a clear elastic-plastic transition is identified (e.g., in the shock velocity-particle velocity curve), and the shear strength shows strain-softening. However, the elastic-plastic transition across the shock front displays transient stress overshoot (hardening) above the Hugoniot elastic limit followed by a relatively sluggish relaxation to the steady shock state, and the plastic shock front steepens with increasing shock strength. The local von Mises shear strain analysis is used to characterize local deformation, and the Voronoi tessellation analysis, the corresponding short-range structures at various stages of shock, release, tension and spallation. The plasticity in this glass is manifested as localized shear transformation zones and of local structure rather than thermal origin, and void nucleation occurs preferentially at the highly shear-deformed regions. The Voronoi and shear strain analyses show that the atoms with different local structures are of different shear resistances that lead to shear localization (e.g., the atoms indexed with (0,0,12,0) are most shear-resistant, and those with (0,2,8,1) are highly prone to shear flow). The dynamic changes in local structures are consistent with the observed deformation dynamics.

Luo, Shengnian [Los Alamos National Laboratory; Arman, Bedri [Los Alamos National Laboratory; Germann, Timothy C [Los Alamos National Laboratory; Cagin, Tahir [TEXAS A& M UNIV

2009-01-01T23:59:59.000Z

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


301

Development of a CO?b2?s laser-based system for characterization of high-temperature structural ceramics  

E-Print Network [OSTI]

-based testing systems for high-temperature ceramic materials have limited capabilities. To test in these severe testing environments requires special grips that will withstand the elevated temperatures and the environment. Furthermore, kilns severely restrict... because the time response of the system is not constrained by the thermal inertia of the kiln. ~ Thermal shock to the ceramics can be avoided by using the laser at low power to slowly heat the sainple to the desired temperature. Heating would be done...

Bowman, David Winslow

1991-01-01T23:59:59.000Z

302

Influence of Microstructure on High-Cycle Fatigue of Ti-6Al-4V: Bimodal vs. Lamellar Structures  

E-Print Network [OSTI]

for such failures in Ti-6Al-4V, a commonly used turbine blade alloy, specifically for fan and compressor blades.K. NALLA, B.L. BOYCE, J.P. CAMPBELL, J.O. PETERS, and R.O. RITCHIE The high-cycle fatigue (HCF) of titanium] HCF can result in essentially unpredictable used for blade and disk applications in the front (low

Ritchie, Robert

303

High speed diesel performance/combustion characteristics correlated with structural composition of tar sands derived experimental fuels  

SciTech Connect (OSTI)

Two Canadian tar sands derived experimental diesel fuels with cetane numbers of 26 and 36 and a reference fuel with a cetane number of 47 were tested in a Deutz (FIL511D), single cylinder, 4 stroke, naturally aspirated research engine. The fuels were tested at intake and cooling air temperatures of 30 and 0/sup 0/C. The 36 cetane number fuel was tested with advanced, rated and retarded injection timings. Poor engine speed stability at light loads and excessive rates of combustion pressure rise were experienced with the lowest cetane number fuel. Detailed performance/combustion behavior is presented and a correlation with fuel structural compostiton is made. The analytical techniques used to characterize the fuels included liquid chromatography, gas chromatography mass spectrometry (GC-MS) and proton nuclear magnetic resonance spectrometry (PNMR).

Webster, G.D.; Chiappetta, S.J.; Neill, W.S.; Glavihcevski, B.; Stringer, P.L.

1985-01-01T23:59:59.000Z

304

Density, porosity, mineralogy, and internal structure of cosmic dust and alteration of its properties during high velocity atmospheric entry  

E-Print Network [OSTI]

X-ray microtomography (XMT), X-ray diffraction (XRD) and magnetic hysteresis measurements were used to determine micrometeorite internal structure, mineralogy, crystallography, and physical properties at ~{\\mu}m resolution. The study samples include unmelted, partially melted (scoriaceous) and completely melted (cosmic spherules) micrometeorites. This variety not only allows comparison of the mineralogy and porosity of these three micrometeorite types, but also reveals changes in meteoroid properties during atmospheric entry at various velocities. At low entry velocities, meteoroids do not melt, and their physical properties do not change. The porosity of unmelted micrometeorites varies considerably (0-12%) with one friable example having porosity around 50%. At higher velocities, the range of meteoroid porosity narrows, but average porosity increases (to 16-27%) due to volatile evaporation and partial melting (scoriaceous phase). Metal distribution seems to be mostly unaffected at this stage. At even higher ...

Kohout, T; Suuronen, J -P; Rochette, P; Hutzler, A; Gattacceca, J; Skála, D D Badjukov R; Böhmová, V; ?uda, J

2014-01-01T23:59:59.000Z

305

Proline 107 Is a Major Determinant in Maintaining the Structure of the Distal Pocket and Reactivity of the High-Spin Heme of MauG  

SciTech Connect (OSTI)

The diheme enzyme MauG catalyzes a six-electron oxidation required for posttranslational modification of a precursor of methylamine dehydrogenase (preMADH) to complete the biosynthesis of its protein-derived tryptophan tryptophylquinone (TTQ) cofactor. Crystallographic studies had shown that Pro107, which resides in the distal pocket of the high-spin heme of MauG, changes conformation upon binding of CO or NO to the heme iron. In this study, Pro107 was converted to Cys, Val, and Ser by site-directed mutagenesis. The structures of each of these MauG mutant proteins in complex with preMADH were determined, as were their physical and catalytic properties. P107C MauG was inactive, and the crystal structure revealed that Cys107 had been oxidatively modified to a sulfinic acid. Mass spectrometry revealed that this modification was present prior to crystallization. P107V MauG exhibited spectroscopic and catalytic properties that were similar to those of wild-type MauG, but P107V MauG was more susceptible to oxidative damage. The P107S mutation caused a structural change that resulted in the five-coordinate high-spin heme being converted to a six-coordinate heme with a distal axial ligand provided by Glu113. EPR and resonance Raman spectroscopy revealed this heme remained high-spin but with greatly increased rhombicity as compared to that of the axial signal of wild-type MauG. P107S MauG was resistant to reduction by dithionite and reaction with H{sub 2}O{sub 2} and unable to catalyze TTQ biosynthesis. These results show that the presence of Pro107 is critical in maintaining the proper structure of the distal heme pocket of the high-spin heme of MauG, allowing exogenous ligands to bind and directing the reactivity of the heme-activated oxygen during catalysis, thus minimizing the oxidation of other residues of MauG.

Feng, Manliang; Jensen, Lyndal M.R.; Yukl, Erik T.; Wei, Xiaoxi; Liu, Aimin; Wilmot, Carrie M.; Davidson, Victor L. (Central Florida); (GSU); (Tougaloo); (UMM)

2012-05-09T23:59:59.000Z

306

New line classifications in Ho I based on high-precision hyperfine-structure measurement of low levels  

SciTech Connect (OSTI)

Doppler-free laser-fluorescence and laser-rf double-resonance studies have been made of the hyperfine structure (hfs) of four strong, previously unclassified visible lines in Ho I; all are shown to connect with low levels. The hfs of the 4f/sup 11/6s/sup 2/ /sup 4/I/sub 11/2,9/2/ levels is measured in detail, allowing evaluation of the dipole (a/sup 01/, a/sup 12/, a/sup 10/) and quadrupole (b/sup 02/,b/sup 11/,b/sup 13/) hfs radial integrals. The results are in close agreement with the ab initio values of Lindgren and Rosen (Case Stud. Atom. Phys. 4, 93--292 (1974). The value found for b/sup 02/ in the 4f/sup 11/6s/sup 2/ configuration is in reasonable agreement with that of Wyart and Camus (Physica 93C, 227-236 (1978)), thereby confirming their finding of a substantial dependence of this parameter on the number of 4f electrons in the core.

Childs, W.J.; Cok, D.R.; Goodman, L.S.

1983-02-01T23:59:59.000Z

307

Structure Functions in Deep Inelastic Lepton Scattering: Data from DOE laboratory experiments as compiled in data reviews by the Durham High Energy Physics Database Group  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Gehrmann, Roberts, and Whalley in their 1999 paper, A Compilation of Structure Functions in Deep Inelastic Scattering, published in volume 25 of Journal of Physics G (Nuclear and Particle Physics) note that these data will continue to be relevant to the next generation of hadron colliders. They present data on the unpolarized structure functions F2 and xF3, R D ._L=_T /, the virtual photon asymmetries A1 and A2 and the polarized structure functions g1 and g2, from deep inelastic lepton scattering off protons, deuterium and nuclei. Data are presented in both tabular and graphical format and include predictions based on the MRST98 and CTEQ4 parton distribution functionsö as well. The data gathered from the relevant collaborations at DOE's Fermilab, SLAC, and JLAB are available, and so are data from related collaborations based at CERN and DESY. The Durham High Energy Physics (HEP) Database Group makes these data, extracted from papers and data reviews, available in one place in an easy-to-access format. These data are also include in the Durham HEP Reaction Data Database which can be searched at http://hepdata.cedar.ac.uk/reaction

Gehrmann, T; Roberts, R.G.; Whalley, M.R.; Durham HEP Database Group

308

Structural characterization of Green River oil-shale at high-pressure using pair distribution function analysis and small angle x-ray scattering.  

SciTech Connect (OSTI)

The compression behavior of a silicate-rich oil shale from the Green River formation in the pressure range 0.0-2.4 GPa was studied using in situ high pressure X-ray pair distribution function (PDF) measurements for the sample contained within a Paris-Edinburgh cell. The real-space local structural information in the PDF, G(r), was used to evaluate the compressibility of the oil shale. Specifically, the pressure-induced reduction in the medium- to long-range atom distances (6-20 {angstrom}) yielded an average sample compressibility corresponding to a bulk modulus of ca. 61-67 GPa. A structural model consisting of a three phase mixture of the principal crystalline oil shale components (quartz, albite and Illite) provided a good fit to the ambient pressure PDF data (R 30.7%). Indeed the features in the PDF beyond 6 {angstrom}, were similarly well fit by a single phase model of the highest symmetry, highly crystalline quartz component.

Locke, D. R.; Chupas, P. J.; Chapman, K. W.; Pugmire, R. J.; Winans, R. E.; Univ. of Utah

2008-01-01T23:59:59.000Z

309

Nano-structure multilayer technology fabrication of high energy density capacitors for the power electronic building book  

SciTech Connect (OSTI)

Commercially available capacitors do not meet the specifications of the Power Electronic Building Block (PEBB) concept. We have applied our propriety nanostructure multilayer materials technology to the fabrication of high density capacitors designed to remove this impediment to PEBB progress. Our nanostructure multilayer capacitors will also be enabling technology in many industrial and military applications. Examples include transient suppression (snubber capacitors), resonant circuits, and DC filtering in PEBB modules. Additionally, weapon applications require compact energy storage for detonators and pulsed-power systems. Commercial applications run the gamut from computers to lighting to communications. Steady progress over the last five years has brought us to the threshold of commercial manufacturability. We have demonstrated a working dielectric energy density of > 11 J/cm3 in 20 nF devices designed for 1 kV operation.

Barbee, T.W.; Johnson, G.W.; Wagner, A.V.

1997-10-21T23:59:59.000Z

310

Experimentally characterizing the electronic structures of f-electron systems using advanced high resolution Fourier transform microwave spectroscopies  

SciTech Connect (OSTI)

We aim to (i) provide data that directly addresses the fundamental roles of actinide valence electrons in chemical bonding, and (ii) serve to provide prototypical data for the heavy element computational chemistry community. These goals will be achieved through the first pure rotational spectroscopic measurements on prototypical systems at ultra-high resolution. These systems encompass low oxidation state uranium and thorium compounds including, but not limited to, UX and ThX, X = F, Cl, Br, I, and UY and ThY, Y = O, S, and other simple U and Th-containing compounds. Our primary experimental tools involve time-domain rotational spectroscopy achieving line widths and resolutions of a few kHz.

Cooke, Stephen, A

2013-02-03T23:59:59.000Z

311

Insight into the Atomic Structure of High-Voltage Spinel 2 LiNi0.5Mn1.5O4 Cathode Material  

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

Application of high-voltage spinel LiNi0.5Mn1.5O4 cathode material is the closest and the most realistic approach to meeting the midterm goal of lithium-ion batteries for electric vehicles (EVs) and plug-in hybrid electric vehicles (HEVs). However, this application has been hampered by long-standing issues, such as capacity degradation and poor first-cycle Coulombic efficiency of LiNi0.5Mn1.5O4 cathode material. Although it is well-known that the structure of LiNi0.5Mn1.5O4 into which Li ions are reversibly intercalated plays a critical role in the above issues, performance degradation related to structural changes, particularly in the first cycle, are not fully understood. Here, we report detailed investigations of local atomic-level and average structure of LiNi0.5Mn1.5O4 during first cycle (3.5–4.9 V) at room temperature. We observed two types of local atomic-level migration of transition metals (TM) ions in the cathode of a well-prepared LiNi0.5Mn1.5O4//Li half-cell during first charge via an aberration-corrected scanning transmission electron microscopy (STEM). Surface regions (~2 nm) of the cycled LiNi0.5Mn1.5O4 particles show migration of TM ions into tetrahedral Li sites to form a Mn3O4-like structure. However, subsurface regions of the cycled particles exhibit migration of TM ions into empty octahedral sites to form a rocksalt-like structure. The migration of these TM ions are closely related to dissolution of Ni/Mn ions and building-up of charge transfer impedance, which contribute significantly to the capacity degradation and the poor first-cycle Coulombic efficiency of spinel LiNi0.5Mn1.5O4 cathode material. Accordingly, we provide suggestions of effective stabilization of LiNi0.5Mn1.5O4 structure to obtain better electrochemical performance.

Huang, Xuejie [Chinese Academy of Sciences, Beijing (China); Yu, Xiqian [Brookhaven National Laboratory (BNL), Upton, NY (United States); Lin, Mingxiang [Chinese Academy of Sciences, Beijing (China); Ben, Liubin [Chinese Academy of Sciences, Beijing (China); Sun, Yang [Chinese Academy of Sciences, Beijing (China); Wang, Hao [Chinese Academy of Sciences, Beijing (China); Yang, Zhenzhong [Chinese Academy of Sciences, Beijing (China); Gu, Lin [Chinese Academy of Sciences, Beijing (China); Yang, Xiao -Qing [Brookhaven National Laboratory (BNL), Upton, NY (United States); Zhao, Haofei [Chinese Academy of Sciences, Beijing (China); Yu, Richeng [Chinese Academy of Sciences, Beijing (China); Armand, Michel [CIC Energigune, Alava (Spain)

2015-01-13T23:59:59.000Z

312

ABSTRACT: Modern seismic codes recommend the design of ductile structures able to absorb seismic energy through high plastic deformation. Since seismic ductile design relies on an accurate control of  

E-Print Network [OSTI]

1 ABSTRACT: Modern seismic codes recommend the design of ductile structures able to absorb seismic energy through high plastic deformation. Since seismic ductile design relies on an accurate control-concrete composite structures; Material properties variability; Seismic design; capacity design. 1 GENERAL CONTEXT

Boyer, Edmond

313

Partial Spin Ordering and Complex Magnetic Structure in BaYFeO4: A Neutron Diffraction and High Temperature Susceptibility Study  

SciTech Connect (OSTI)

The novel iron-based compound, BaYFeO4, crystallizes in the Pnma space group with two distinct Fe3+ sites, that are alternately corner-shared [FeO5]7 square pyramids and [FeO6]9 octahedra, forming into [Fe4O18]24 rings, which propagate as columns along the b-axis. A recent report shows two discernible antiferromagnetic (AFM) transitions at 36 and 48 K in the susceptibility, yet heat capacity measurements reveal no magnetic phase transitions at these temperatures. An upturn in the magnetic susceptibility measurements up to 400 K suggests the presence of shortrange magnetic behavior at higher temperatures. In this Article, variable-temperature neutron powder diffraction and hightemperature magnetic susceptibility measurements were performed to clarify the magnetic behavior. Neutron powder diffraction confirmed that the two magnetic transitions observed at 36 and 48 K are due to long-range magnetic order. Below 48 K, the magnetic structure was determined as a spin-density wave (SDW) with a propagation vector, k = (0, 0, 1/3), and the moments along the b-axis, whereas the structure becomes an incommensurate cycloid [k = (0, 0, 0.35)] below 36 K with the moments within the bc-plane. However, for both cases the ordered moments on Fe3+ are only of the order 3.0 B, smaller than the expected values near 4.5 B, indicating that significant components of the Fe moments remain paramagnetic to the lowest temperature studied, 6 K. Moreover, new high-temperature magnetic susceptibility measurements revealed a peak maximum at 550 K indicative of short-range spin correlations. It is postulated that most of the magnetic entropy is thus removed at high temperatures which could explain the absence of heat capacity anomalies at the long-range ordering temperatures. Published spin dimer calculations, which appear to suggest a k = (0, 0, 0) magnetic structure, and allow for neither low dimensionality nor geometric frustration, are inadequate to explain the observed complex magnetic structure.

Thompson, Corey [Florida State University, Tallahassee] [Florida State University, Tallahassee; Greedan, John [McMaster University] [McMaster University; Garlea, Vasile O [ORNL] [ORNL; Flacau, Roxana [National Research Council of Canada] [National Research Council of Canada; Tan, Malinda [California State University, Long Beach (CSULB)] [California State University, Long Beach (CSULB); Derakhshan, Shahab [California State University, Long Beach (CSULB)] [California State University, Long Beach (CSULB)

2014-01-01T23:59:59.000Z

314

Updating of ASME Nuclear Code Case N-201 to Accommodate the Needs of Metallic Core Support Structures for High Temperature Gas Cooled Reactors Currently in Development  

SciTech Connect (OSTI)

On September 29, 2005, ASME Standards Technology, LLC (ASME ST-LLC) executed a multi-year, cooperative agreement with the United States DOE for the Generation IV Reactor Materials project. The project's objective is to update and expand appropriate materials, construction, and design codes for application in future Generation IV nuclear reactor systems that operate at elevated temperatures. Task 4 was embarked upon in recognition of the large quantity of ongoing reactor designs utilizing high temperature technology. Since Code Case N-201 had not seen a significant revision (except for a minor revision in September, 2006 to change the SA-336 forging reference for 304SS and 316SS to SA-965 in Tables 1.2(a) and 1.2(b), and some minor editorial changes) since December 1994, identifying recommended updates to support the current high temperature Core Support Structure (CSS) designs and potential new designs was important. As anticipated, the Task 4 effort identified a number of Code Case N-201 issues. Items requiring further consideration range from addressing apparent inconsistencies in definitions and certain material properties between CC-N-201 and Subsection NH, to inclusion of additional materials to provide the designer more flexibility of design. Task 4 developed a design parameter survey that requested input from the CSS designers of ongoing high temperature gas cooled reactor metallic core support designs. The responses to the survey provided Task 4 valuable input to identify the design operating parameters and future needs of the CSS designers. Types of materials, metal temperature, time of exposure, design pressure, design life, and fluence levels were included in the Task 4 survey responses. The results of the survey are included in this report. This research proves that additional work must be done to update Code Case N-201. Task 4 activities provide the framework for the Code Case N-201 update and future work to provide input on materials. Candidate materials such as Type 321 and Type 347 austenitic stainless steels, Modified 9Cr-1Mo steel for core support structure construction, and Alloy 718 for Threaded Structural Fasteners were among the recommended materials for inclusion in the Code Case. This Task 4 Report identifies the need to address design life beyond 3 x 105 hours, especially in consideration of 60-year design life. A proposed update to the latest Code Case N-201 revision (i.e., Code Case N-201-5) including the items resolved in this report is included as Appendix A.

Mit Basol; John F. Kielb; John F. MuHooly; Kobus Smit

2007-05-02T23:59:59.000Z

315

Computer Aided Multi-scale Design of SiC-Si3N4 Nanoceramic Composites for High-Temperature Structural Applications  

SciTech Connect (OSTI)

It is estimated that by using better and improved high temperature structural materials, the power generation efficiency of the power plants can be increased by 15% resulting in significant cost savings. One such promising material system for future high-temperature structural applications in power plants is Silicon Carbide-Silicon Nitride (SiC-Si{sub 3}N{sub 4}) nanoceramic matrix composites. The described research work focuses on multiscale simulation-based design of these SiC-Si{sub 3}N{sub 4} nanoceramic matrix composites. There were two primary objectives of the research: (1) Development of a multiscale simulation tool and corresponding multiscale analyses of the high-temperature creep and fracture resistance properties of the SiC-Si{sub 3}N{sub 4} nanocomposites at nano-, meso- and continuum length- and timescales; and (2) Development of a simulation-based robust design optimization methodology for application to the multiscale simulations to predict the range of the most suitable phase morphologies for the desired high-temperature properties of the SiC-Si{sub 3}N{sub 4} nanocomposites. The multiscale simulation tool is based on a combination of molecular dynamics (MD), cohesive finite element method (CFEM), and continuum level modeling for characterizing time-dependent material deformation behavior. The material simulation tool is incorporated in a variable fidelity model management based design optimization framework. Material modeling includes development of an experimental verification framework. Using material models based on multiscaling, it was found using molecular simulations that clustering of the SiC particles near Si{sub 3}N{sub 4} grain boundaries leads to significant nanocomposite strengthening and significant rise in fracture resistance. It was found that a control of grain boundary thicknesses by dispersing non-stoichiometric carbide or nitride phases can lead to reduction in strength however significant rise in fracture strength. The temperature dependent strength and microstructural stability was also significantly depended upon the dispersion of new phases at grain boundaries. The material design framework incorporates high temperature creep and mechanical strength data in order to develop a collaborative multiscale framework of morphology optimization. The work also incorporates a computer aided material design dataset development procedure where a systematic dataset on material properties and morphology correlation could be obtained depending upon a material processing scientist's requirements. Two different aspects covered under this requirement are: (1) performing morphology related analyses at the nanoscale and at the microscale to develop a multiscale material design and analyses capability; (2) linking material behavior analyses with the developed design tool to form a set of material design problems that illustrate the range of material design dataset development that could be performed. Overall, a software based methodology to design microstructure of particle based ceramic nanocomposites has been developed. This methodology has been shown to predict changes in phase morphologies required for achieving optimal balance of conflicting properties such as minimal creep strain rate and high fracture strength at high temperatures. The methodology incorporates complex material models including atomistic approaches. The methodology will be useful to design materials for high temperature applications including those of interest to DoE while significantly reducing cost of expensive experiments.

Vikas Tomer; John Renaud

2010-08-31T23:59:59.000Z

316

Time series of high resolution photospheric spectra in a quiet region of the Sun. II. Analysis of the variation of physical quantities of granular structures  

E-Print Network [OSTI]

From the inversion of a time series of high resolution slit spectrograms obtained from the quiet sun, the spatial and temporal distribution of the thermodynamical quantities and the vertical flow velocity is derived as a function of logarithmic optical depth and geometrical height. Spatial coherence and phase shift analyzes between temperature and vertical velocity depict the height variation of these physical quantities for structures of different size. An average granular cell model is presented, showing the granule-intergranular lane stratification of temperature, vertical velocity, gas pressure and density as a function of logarithmic optical depth and geometrical height. Studies of a specific small and a specific large granular cell complement these results. A strong decay of the temperature fluctuations with increasing height together with a less efficient penetration of smaller cells is revealed. The T -T coherence at all granular scales is broken already at log tau =-1 or z~170 km. At the layers beyon...

Puschmann, K G; Vazquez, M; Bonet, J A; Hanslmeier, A; 10.1051/0004-6361:20047193

2012-01-01T23:59:59.000Z

317

Measurement of the Inclusive e{\\pm}p Scattering Cross Section at High Inelasticity y and of the Structure Function FL  

E-Print Network [OSTI]

A measurement is presented of the inclusive neutral current e\\pm p scattering cross section using data collected by the H1 experiment at HERA during the years 2003 to 2007 with proton beam energies Ep of 920, 575, and 460 GeV. The kinematic range of the measurement covers low absolute four-momentum transfers squared, 1.5 GeV2 < Q2 < 120 GeV2, small values of Bjorken x, 2.9 \\cdot 10-5 < x < 0.01, and extends to high inelasticity up to y = 0.85. The structure function FL is measured by combining the new results with previously published H1 data at Ep = 920 GeV and Ep = 820 GeV. The new measurements are used to test several phenomenological and QCD models applicable in this low Q2 and low x kinematic domain.

Aaron, F D; Andreev, V; Backovic, S; Baghdasaryan, A; Baghdasaryan, S; Barrelet, E; Bartel, W; Behrend, O; Belov, P; Begzsuren, K; Belousov, A; Bizot, J C; Boudry, V; Bozovic-Jelisavcic, I; Bracinik, J; Brandt, G; Brinkmann, M; Brisson, V; Britzger, D; Bruncko, D; Bunyatyan, A; Buschhorn, G; Bylinkin, A; Bystritskaya, L; Campbell, A J; Cantun Avila, K B; Ceccopieri, F; Cerny, K; Cerny, V; Chekelian, V; Cholewa, A; Contreras, J G; Coughlan, J A; Cvach, J; Dainton, J B; Daum, K; Delcourt, B; Delvax, J; De Wolf, E A; Diaconu, C; Dobre, M; Dodonov, V; Dossanov, A; Dubak, A; Eckerlin, G; Egli, S; Eliseev, A; Elsen, E; Favart, L; Fedotov, A; Felst, R; Feltesse, J; Ferencei, J; Fischer, D J; Fleischer, M; Fomenko, A; Gabathuler, E; Gayler, J; Ghazaryan, S; Glazov, A; Goerlich, L; Gogitidze, N; Gouzevitch, M; Grab, C; Grebenyuk, A; Greenshaw, T; Grell, B R; Grindhammer, G; Habib, S; Haidt, D; Helebrant, C; Henderson, R C.W; Hennekemper, E; Henschel, H; Herbst, M; Herrera, G; Hildebrandt, M; Hiller, K H; Hoffmann, D; Horisberger, R; Hreus, T; Huber, F; Jacquet, M; Janssen, X; Jonsson, L; Jung, A W; Jung, H; Kapichine, M; Katzy, J; Kenyon, I R; Kiesling, C; Klein, M; Kleinwort, C; Kluge, T; Knutsson, A; Kogler, R; Kostka, P; Kraemer, M; Kretzschmar, J; Kruger, K; Kutak, K; Landon, M P.J; Lange, W; Lastovicka-Medin, G; Laycock, P; Lebedev, A; Lendermann, V; Levonian, S; Lipka, K; List, B; List, J; Loktionova, N; Lopez-Fernandez, R; Lubimov, V; Makankine, A; Malinovski, E; Marage, P; Martyn, H U; Maxfield, S J; Mehta, A; Meyer, A B; Meyer, H; Meyer, J; Mikocki, S; Milcewicz-Mika, I; Moreau, F; Morozov, A; Morris, J V; Mozer, M U; Mudrinic, M; Muller, K; Naumann, Th; Newman, P R; Niebuhr, C; Nikiforov, A; Nikitin, D; Nowak, G; Nowak, K; Olsson, J E; Osman, S; Ozerov, D; Pahl, P; Palichik, V; Panagoulias, I; Pandurovic, M; Papadopoulou, Th; Pascaud, C; Patel, G D; Perez, E; Petrukhin, A; Picuric, I; Piec, S; Pirumov, H; Pitzl, D; Placakyte, R; Pokorny, B; Polifka, R; Povh, B; Radescu, V; Raicevic, N; Ravdandorj, T; Reimer, P; Rizvi, E; Robmann, P; Roosen, R; Rostovtsev, A; Rotaru, M; Ruiz Tabasco, J E; Rusakov, S; Salek, D; Sankey, D P.C; Sauter, M; Sauvan, E; Schmitt, S; Schoeffel, L; Schoning, A; Schultz-Coulon, H C; Sefkow, F; Shtarkov, L N; Shushkevich, S; Sloan, T; Smiljanic, I; Soloviev, Y; Sopicki, P; South, D; Spaskov, V; Specka, A; Staykova, Z; Steder, M; Stella, B; Stoicea, G; Straumann, U; Sykora, T; Thompson, P D; Toll, T; Tran, T H; Traynor, D; Truol, P; Tsakov, I; Tseepeldorj, B; Tsurin, I; Turnau, J; Urban, K; Valkarova, A; Vallee, C; Van Mechelen, P; Vargas, A; Vazdik, Y; von den Driesch, M; Wegener, D; Wunsch, E; Zacek, J; Zalesak, J; Zhang, Z; Zhokin, A; Zohrabyan, H; Zomer, F

2011-01-01T23:59:59.000Z

318

A high-entropy wind r-process study based on nuclear-structure quantities from the new finite-range droplet model FRDM(2012)  

E-Print Network [OSTI]

Theoretical studies of the nucleosynthesis origin of the heavy elements in our Solar System (S.S.) by the rapid neutron-capture process (r-process) still face the entwined uncertainties in the possible astrophysical scenarios and the nuclear-physics properties far from stability. In this paper we present results from the investigation of an r-process in the high-entropy wind (HEW) of core-collapse supernovae (here chosen as one of the possible scenarios for this nucleosynthesis process), using new nuclear-data input calculated in a consistent approach, for masses and $\\beta$-decay properties from the new finite-range droplet model FRDM(2012). The accuracy of the new mass model is 0.56 MeV with respect to {\\sc AME2003}, to which it was adjusted. We compare the new HEW r-process abundance pattern to the latest S.S. r-process residuals and to our earlier calculations with the nuclear-structure quantities based on FRDM(1992). Substantial overall and specific local improvements in the calculated pattern of the r-process between $A\\simeq 110$ and $^{209}$Bi, as well as remaining deficiencies are discussed in terms of the underlying spherical and deformed shell structure far from stability.

Karl-Ludwig Kratz; Khalil Farouqi; Peter Möller

2014-06-10T23:59:59.000Z

319

A fermi liquid electric structure and the nature of the carriers in high-T/sub c/ cuprates: A photoemission study  

SciTech Connect (OSTI)

We have performed angle-integrated and angle-resolved photoemission measurements at 20 K on well-characterized single crystals of high-T/sub c/ cuprates (both 1:2:3-type and 2:2:1:2-type) cleaved in situ, and find a relatively large, resolution limited Fermi edge which shows large amplitude variations with photon energy, indicative of band structure final state effects. The lineshapes of the spectra of the 1:2:3 materials as a function of photon energy are well reproduced by band structure predictions, indicating a correct mix of 2p and 3d orbitals on the calculations, while the energy positions of the peaks agree with calculated bands only to within /approx/0.5 eV. This may yet prove to reflect the effects of Coulomb correlation. We nevertheless conclude that a Fermi liquid approach to conductivity is appropriate. Angle-resolved data, while still incomplete, suggest agreement with the Fermi surface predicted by the LDA calculations. A BCS-like energy gap is observed in the 2:2:1:2 materials, whose magnitude is twice the weak coupling BCS value (i.e., 2/Delta/ = 7 KT/sub c/). 49 refs., 11 figs.

Arko, A.J.; List, R.S.; Bartlett, R.J.; Cheong, S.W.; Fisk, Z.; Thompson, J.D.; Olson, C.G.; Yang, A.B.; Liu, R.; Gu, C.; Veal, B.W.; Liu, J.Z.; Paulikas, A.P.; Vandervoort, K.; Claus, H.; Campuzano, J.C.; Schirber, J.E.; Shinn, N.D.

1989-01-01T23:59:59.000Z

320

High-resolution structural studies of ultra-thin magnetic, transition metal overlayers and two-dimensional transition metal oxides using synchrotron radiation  

SciTech Connect (OSTI)

This thesis report the surface-structure determination of three, ultra-thin magnetic transition-metal films, Fe/Au(100), Mn/Ni(100), and Mn/Cu(100) using Angle-Resolved Photoemission Extended Fine Structure (ARPEFS) and photoelectron holography. These structural studies are the first to use non-s initial states in the ARPEFS procedure. This thesis also reports an ARPEFS surface-structure determination of a two-dimensional transition-metal oxide, [(1 x 1)O/W(110)] x 12. The authors have analyzed the ARPFES signal from the Au 4f{sub 7/5} core level of the Au(1 ML)/Fe(15 ML)/Au(100) system. The analysis shows that the Fe grows layer by layer with one monolayer of gold, acting as a surfactant, remaining on top of the growing Fe layers. These surface gold atoms sit in the four-fold hollow site, 1.67 {+-} 0.02 A above the iron surface. The grown Fe layer is very much like the bulk, bcc iron, with an interlayer spacing of 1.43 {+-} 0.03 A. Analysis of the Mn 3p ARPEFS signals from c(2 x 2)Mn/Ni(100) and c(2 x 2)Mn/Cu(100) shows that the Mn forms highly corrugated surface alloys. The corrugation of the Mn/Ni(100) and Mn/Cu(100) systems are 0.24 {+-} 0.02 A and 0.30 {+-} 0.04 A respectively. In both cases the Mn is sticking above the plane of the surface substrate atoms. For the Mn/Ni(100) system the first layer Ni is contracted 4% from the bulk value. The Mn/Cu(100) system shows bulk spacing for the substrate Cu. Photoelectron holography shows that the Mn/Ni interface is very abrupt with very little Mn leaking into the second layer, while the Mn/Cu(100) case has a significant amount of Mn leaking into the second layer. A new, five-element electrostatic electron lens was developed for hemispherical electron-energy analyzers. This lens system can be operated at constant transverse or constants angular magnification, and has been optimized for use with the very small photon-spot sizes. Improvements to the hemispherical electron-energy analyzer are also discussed.

Kellar, S.A. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; [Lawrence Berkeley National Lab., CA (United States). Advanced Light Source Div.

1997-05-01T23:59:59.000Z

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321

Polarization-dependent all-optical modulator with ultra-high modulation depth based on a stereo graphene-microfiber structure  

E-Print Network [OSTI]

We report an in-line polarization-dependent all-optical fiber modulator based on a stereo graphene-microfiber structure (GMF) by utilizing the lab-on-rod technique. Owing to the unique spring-like geometry, an ultra-long GMF interaction length can be achieved, and an ultra-high modulation depth (MD) of ~7.5 dB and a high modulation efficiency (ME) of ~0.2 dB/mW were demonstrated for one polarization state. The MD and ME are more than one order larger than those of other graphene-waveguide hybrid all-optical modulators. By further optimizing the transferring and cleaning process, the modulator can quickly switch between transparent and opaque states for both the two polarization states with a maximized MD of tens of decibels. This modulator is compatible with current fiber-optic communication systems and may be applied in the near future to meet the impending need for ultrafast optical signal processing.

Xu, Fei; Zheng, Bi-cai; Shao, Guang-hao; Ge, Shi-jun; Lu, Yan-qing

2015-01-01T23:59:59.000Z

322

High temperature turbine engine structure  

DOE Patents [OSTI]

A hybrid ceramic/metallic fastener (bolt) includes a headed ceramic shank carrying a metallic end termination fitting. A conventional cap screw threadably engages the termination fitting to apply tensile force to the fastener.

Boyd, Gary L. (Tempe, AZ)

1991-01-01T23:59:59.000Z

323

High temperature turbine engine structure  

DOE Patents [OSTI]

A hybrid ceramic/metallic fastener (bolt) includes a headed ceramic shank carrying a metallic end termination fitting. A conventional cap screw threadably engages the termination fitting to apply tensile force to the fastener.

Boyd, Gary L. (Tempe, AZ)

1992-01-01T23:59:59.000Z

324

Regulatory Safety Issues in the Structural Design Criteria of ASME Section III Subsection NH and for Very High Temperatures for VHTR & GEN IV  

SciTech Connect (OSTI)

The objective of this task is to identify issues relevant to ASME Section III, Subsection NH [1], and related Code Cases that must be resolved for licensing purposes for VHTGRs (Very High Temperature Gas Reactor concepts such as those of PBMR, Areva, and GA); and to identify the material models, design criteria, and analysis methods that need to be added to the ASME Code to cover the unresolved safety issues. Subsection NH was originally developed to provide structural design criteria and limits for elevated-temperature design of Liquid Metal Fast Breeder Reactor (LMFBR) systems and some gas-cooled systems. The U.S. Nuclear Regulatory Commission (NRC) and its Advisory Committee for Reactor Safeguards (ACRS) reviewed the design limits and procedures in the process of reviewing the Clinch River Breeder Reactor (CRBR) for a construction permit in the late 1970s and early 1980s, and identified issues that needed resolution. In the years since then, the NRC and various contractors have evaluated the applicability of the ASME Code and Code Cases to high-temperature reactor designs such as the VHTGRs, and identified issues that need to be resolved to provide a regulatory basis for licensing. This Report describes: (1) NRC and ACRS safety concerns raised during the licensing process of CRBR , (2) how some of these issues are addressed by the current Subsection NH of the ASME Code; and (3) the material models, design criteria, and analysis methods that need to be added to the ASME Code and Code Cases to cover unresolved regulatory issues for very high temperature service.

William J. O’Donnell; Donald S. Griffin

2007-05-07T23:59:59.000Z

325

A novel 3D structure composed of strings of hierarchical TiO{sub 2} spheres formed on TiO{sub 2} nanobelts with high photocatalytic properties  

SciTech Connect (OSTI)

A novel hierarchical titanium dioxide (TiO{sub 2}) composite nanostructure with strings of anatase TiO{sub 2} hierarchical micro-spheres and rutile nanobelts framework (TiO{sub 2} HSN) is successfully synthesized via a one-step hydrothermal method. Particularly, the strings of hierarchical spheres are assembled by very thin TiO{sub 2} nanosheets, which are composed of highly crystallized anatase nanocrystals. Meanwhile, the HSN has a large surface area of 191 m{sup 2}/g, which is about 3 times larger than Degussa P25. More importantly, the photocatalytic activity of HSN and P25 were evaluated by the photocatalytic oxidation decomposition of methyl orange (MO) under UV light illumination, and the TiO{sub 2} HSN shows enhanced photocatalytic activity compared with Degussa P25, as result of its continuous hierarchical structures, special conductive channel and large specific surface area. With these features, the hierarchical TiO{sub 2} may have more potential applications in the fields of dye-sensitized solar cells and lithium ion batteries. -- Graphical abstract: Novel TiO{sub 2} with anatase micro-spheres and rutile nanobelts is synthesized. Enhanced photocatalysis is attributed to hierarchical structures (3D spheres), conductive channel (1D nanobelts) and large specific surface area (2D nanosheet). Highlights: • The novel TiO{sub 2} nanostructure (HSN) is fabricated for the first time. • HSN is composed of strings of anatase hierarchical spheres and rutile nanobelt. • HSN presents a larger S{sub BET} of 191 m{sup 2}/g, 3 times larger than the Degussa P25 (59 m{sup 2}/g). • HSN owns three kinds of dimensional TiO{sub 2} (1D, 2D and 3D) simultaneously. • HSN exhibits better photocatalytic performance compared with Degussa P25.

Jiang, Yongjian [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China); Li, Meicheng, E-mail: mcli@ncepu.edu.cn [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China); Suzhou Institute, North China Electric Power University, Suzhou 215123 (China); Song, Dandan; Li, Xiaodan; Yu, Yue [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China)

2014-03-15T23:59:59.000Z

326

Lithium Dynamics in the Zeolite-Like Lithosilicate RUB-29 and its High-Temperature Structure after Dehydration (Cs14Li42Si72O172)  

SciTech Connect (OSTI)

The thermally induced modifications of the zeolite-like lithosilicate RUB-29 (Cs14Li24[Li18Si72O172] {center_dot} 14H2O, space group I222, a = 11.208(1), b = 17.286(1), c = 23.536(1) Angstroms, and V = 4660(1) Angstroms3) have been studied focusing on static and dynamical disorder of Li. After the water loss, dehydrated RUB-29 (HT-d-RUB-29) maintains the basic space group I222 at high temperatures from 473 up to 1073 K. However, the distribution of extra-framework Li and Cs cations in HT-d-RUB-29 became distinctly different from those in the original structure. In particular, extra-framework Li cations located within porous 8- and 10-membered ring-channels, where these Li cations were partially coordinated with zeolitic water in the original structure, migrate into densely packed Li2O-layers after dehydration. As a result of the migration, the number of empty sites relevant for Li hopping in Li2O-layers decreases, which give a negative effect on the long-range charge transfer in dehydrated RUB-29. Its DC conductivity values estimated from AC impedance spectra lie between 2 x 10-5 and 6 x 10-5 S cm-1 at 873 K, and a low activation energy of 51 kJ/mol (congruent with 0.53 eV) could be determined for the bulk charge transfer process in dehydrated RUB-29.

Park,S.; Parise, J.; Franke, M.; Seydel, T.; Paulmann, C.

2008-01-01T23:59:59.000Z

327

The critical role of growth temperature on the structural and electrical properties of AlGaN/GaN high electron mobility transistor heterostructures grown on Si(111)  

SciTech Connect (OSTI)

This work is dedicated to the study of the growth by ammonia source molecular beam epitaxy of Al{sub x}Ga{sub 1-x}N/GaN high electron mobility transistors on (111) oriented silicon substrates. The effect of growth conditions on the structural and electrical properties of the heterostructures was investigated. It is shown that even a slight variation in the growth temperature of the thick GaN buffer on AlN/GaN stress mitigating layers has a drastic influence on these properties via a counterintuitive effect on the dislocation density. Both in situ curvature measurements and ex situ transmission electron microscopy and x-ray diffraction experiments indicate that the relaxation rate of the lattice mismatch stress increases with the growth temperature but finally results in a higher dislocations density. Furthermore, a general trend appears between the final wafer curvature at room temperature and the threading dislocation density. Finally, the influence of the dislocation density on the GaN buffer insulating properties and the two-dimensional electron gas transport properties at the Al{sub x}Ga{sub 1-x}N/GaN interface is discussed.

Baron, N. [CRHEA-CNRS, rue Bernard Gregory, Parc de Sophia Antipolis, 06560 Valbonne (France); PICOGIGA International, Place Marcel Rebuffat, Parc de Villejust, 91971 Courtaboeuf (France); Cordier, Y.; Chenot, S.; Vennegues, P.; Tottereau, O.; Leroux, M.; Semond, F.; Massies, J. [CRHEA-CNRS, rue Bernard Gregory, Parc de Sophia Antipolis, 06560 Valbonne (France)

2009-02-01T23:59:59.000Z

328

Analysis of the rotational structure in the high-resolution infrared spectra of trans-hexatriene-2-d1 and -3-d1  

SciTech Connect (OSTI)

The 2-d1 and 3-d1 isotopologues of trans-hexatriene have been synthesized, and their high-resolution (0.0015 cm-1) IR spectra have been recorded. For each of the isotopologues the rotational structure in four C-type bands for out-of-plane vibrational modes has been analyzed, and the ground state combination differences (GSCDs) have been pooled. Ground state rotational constants have been fitted to the GSCDs. For the 2-d species, A0, B0, and C0 values of 0.7837254(5), 0.0442806(3), and 0.0419299(2) cm-1 were fitted to 2450 GSCDs. For the 3-d species, A0, B0, and C0 values of 0.7952226(8), 0.0446149(7), and 0.0422661(4) cm-1 were fitted to 2234 GSCDs. For the eleven out-of-plane modes of the two isotopologues, predictions of anharmonic wavenumbers and harmonic intensities have been computed and compared with experiment where possible.

Craig, Norman C.; Chen, Yihui; van Besien, Herman; Blake, Thomas A.

2014-09-01T23:59:59.000Z

329

The Structure of a High Fidelity DNA Polymerase Bound to a Mismatched Nucleotide Reveals an ;Ajar; Intermediate Conformation in the Nucleotide Selection Mechanism  

SciTech Connect (OSTI)

To achieve accurate DNA synthesis, DNA polymerases must rapidly sample and discriminate against incorrect nucleotides. Here we report the crystal structure of a high fidelity DNA polymerase I bound to DNA primer-template caught in the act of binding a mismatched (dG:dTTP) nucleoside triphosphate. The polymerase adopts a conformation in between the previously established 'open' and 'closed' states. In this 'ajar' conformation, the template base has moved into the insertion site but misaligns an incorrect nucleotide relative to the primer terminus. The displacement of a conserved active site tyrosine in the insertion site by the template base is accommodated by a distinctive kink in the polymerase O helix, resulting in a partially open ternary complex. We suggest that the ajar conformation allows the template to probe incoming nucleotides for complementarity before closure of the enzyme around the substrate. Based on solution fluorescence, kinetics, and crystallographic analyses of wild-type and mutant polymerases reported here, we present a three-state reaction pathway in which nucleotides either pass through this intermediate conformation to the closed conformation and catalysis or are misaligned within the intermediate, leading to destabilization of the closed conformation.

Wu, Eugene Y.; Beese, Lorena S. (Duke)

2011-10-10T23:59:59.000Z

330

Crystal Structure of Cascade  

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

ribbon-like structure (Figure 1). This structure is facilitated by rotation of nucleotides out of the duplex region at six base pair intervals and stabilized by the highly...

331

Neutron reflecting supermirror structure  

DOE Patents [OSTI]

An improved neutron reflecting supermirror structure comprising a plurality of stacked sets of bilayers of neutron reflecting materials. The improved neutron reflecting supermirror structure is adapted to provide extremely good performance at high incidence angles, i.e. up to four time the critical angle of standard neutron mirror structures. The reflection of neutrons striking the supermirror structure at a high critical angle provides enhanced neutron throughput, and hence more efficient and economical use of neutron sources.

Wood, James L. (Drayton Plains, MI)

1992-01-01T23:59:59.000Z

332

Neutron reflecting supermirror structure  

DOE Patents [OSTI]

An improved neutron reflecting supermirror structure comprising a plurality of stacked sets of bilayers of neutron reflecting materials. The improved neutron reflecting supermirror structure is adapted to provide extremely good performance at high incidence angles, i.e. up to four time the critical angle of standard neutron mirror structures. The reflection of neutrons striking the supermirror structure at a high critical angle provides enhanced neutron throughput, and hence more efficient and economical use of neutron sources. 2 figs.

Wood, J.L.

1992-12-01T23:59:59.000Z

333

Facile synthesized nanorod structured vanadium pentoxide for...  

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

synthesized nanorod structured vanadium pentoxide for high-rate lithium batteries. Facile synthesized nanorod structured vanadium pentoxide for high-rate lithium batteries....

334

The structures of CO, NO and benzene on various transition metal surfaces: Overview of LEED (low-energy electron diffraction) and HREELS (high-resolution electron energy loss) results  

SciTech Connect (OSTI)

Recent results are summarized concerning the adsorption structures of carbon monoxide (CO) and nitric oxide (NO) chemisorbed on various transition metal surfaces, and of benzene (C6H6) on Pd, Rh and Pt(111). These results were for the most part obtained with intensity analysis of low-energy electron diffraction (LEED) and high-resolution electron energy loss spectroscopy (HREELS).

Ohtani, H.; Van Hove, M.A.; Somorjai, G.A.

1987-06-01T23:59:59.000Z

335

Probing Structure-Property Relationship of Energy Storage Materials Using Ex-Situ, In-Situ Dynamic Microscopy and Spectroscopy with High Spatial and Fast Temporal Resolution  

E-Print Network [OSTI]

Probing Structure-Property Relationship of Energy Storage Materials Using Ex-Situ, In-Situ Dynamic, chemistry, and properties of energy storage materials Find general guiding principle for accelerated-situ chemical imaging and spectroscopic study of structure and chemical evolution of new energy storage

336

A microsecond time resolved x-ray absorption near edge structure synchrotron study of phase transitions in Fe undergoing ramp heating at high pressure  

SciTech Connect (OSTI)

We report a microsecond time-resolved x-ray absorption near edge structure study using synchrotron radiation to dynamically detect structural phase transitions in Fe undergoing rapid heating along a quasi-isochoric path. Within a few ms, we observed two structural phase transitions, which transform the ambient bcc phase of Fe into the fcc phase, and then into the liquid phase. This example illustrates the opportunities offered by energy dispersive x-ray absorption spectroscopy in the study of matter under extreme dynamic conditions. Advanced simulations are compared to these data.

Marini, C.; Mathon, O.; Pascarelli, S. [European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP220, 38043 Grenoble Cedex (France); Occelli, F.; Torchio, R.; Recoules, V.; Loubeyre, P. [CEA, Bruyeres le Chatel, 91297 Arpajon Cedex (France)

2014-03-07T23:59:59.000Z

337

Section name Biomimetics at Reading  

E-Print Network [OSTI]

world and these can be used as the basis for new technologies. Because nature tends to be very economical with energy, bioinspired technologies have the potential to provide cleaner, greener solutions technologies. Researchers in the Centre enjoy excellent collaborative links with both other universities

Martin, Ralph R.

338

Microelectromechanical systems for biomimetical application   

E-Print Network [OSTI]

The application of adaptive micro-electro-mechanical systems (MEMS) device in biologically-inspired cochlear model (cochlear biomodel) has been seen as a preferable approach to mimic closely the human cochlear response. ...

Latif, Rhonira

2013-07-01T23:59:59.000Z

339

Ab initio theoretical investigation of the frequency comb structure and coherence in the vuv-xuv regimes via high-order harmonic generation  

E-Print Network [OSTI]

;. Phase coherence among excitation pulses essentially prevails as the time delay is prolonged. We now study the effect on the frequency comb structure as the number of phase-locked pulses N is varied. Figure 3#1;c#2; shows the frequency comb structure... mode-locked laser, consider the pulse circulat- ing in a laser cavity #3;14#4;. Since the group and phase veloci- ties inside the cavity are not equal, there is a phase shift #3;#4; from pulse to pulse. The angular frequency spectrum ema- nating from...

Chu, Shih-I; Carrera, Juan J.; Son, Sang-Kil

2008-03-03T23:59:59.000Z

340

High temperature crystal structures and superionic properties of SrCl{sub 2}, SrBr{sub 2}, BaCl{sub 2} and BaBr{sub 2}  

SciTech Connect (OSTI)

The structural properties of the binary alkaline-earth halides SrCl{sub 2}, SrBr{sub 2}, BaCl{sub 2} and BaBr{sub 2} have been investigated from ambient temperature up to close to their melting points, using the neutron powder diffraction technique. Fluorite-structured SrCl{sub 2} undergoes a gradual transition to a superionic phase at 900-1100 K, characterised by an increasing concentration of anion Frenkel defects. At a temperature of 920(3) K, the tetragonal phase of SrBr{sub 2} undergoes a first-order transition to a cubic fluorite phase. This high temperature phase shows the presence of extensive disorder within the anion sublattice, which differs from that found in superionic SrCl{sub 2}. BaCl{sub 2} and BaBr{sub 2} both adopt the cotunnite crystal structure under ambient conditions. BaCl{sub 2} undergoes a first-order structural transition at 917(5) K to a disordered fluorite-structured phase. The relationship between the (disordered) crystal structures and the ionic conductivity behaviour is discussed and the influence of the size of the mobile anion on the superionic behaviour is explored. - Graphical abstract: Anomalous behaviour of the lattice expansion of SrCl{sub 2} at temperatures of {approx}1000 K is associated with the gradual transition to a superionic phase, whilst SrBr{sub 2} undergoes a first-order structural transition ({beta}{yields}{alpha}) to a fluorite-structured superionic phase at 920(3) K. Highlights: > Anomalous behaviour of the lattice expansion of SrCl{sub 2} occurs at temperatures {approx}1000 K. > Crystal structure of {beta}-SrBr{sub 2} is described in detail. > On heating, SrBr{sub 2} and BaCl{sub 2} transform to a fluorite-structured superionic phase. > Temperature dependence of the BaCl{sub 2} and BaBr{sub 2} structures is presented. > Nature of the superionic phases within the alkaline-earth halides is discussed.

Hull, Stephen, E-mail: stephen.hull@stfc.ac.uk [The ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); Norberg, Stefan T. [The ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Gothenburg (Sweden); Ahmed, Istaq; Eriksson, Sten G. [Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Gothenburg (Sweden); Mohn, Chris E. [Department of Chemistry and Centre for Materials Science and Nanotechnology, University of Oslo, P.O. Box 1033 Blindern, N-0315 Oslo (Norway)

2011-11-15T23:59:59.000Z

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


341

Maintenance building structural design description: 4 x 350 MW(t) Modular HTGR [High-Temperature Gas-Cooled Reactor] Plant  

SciTech Connect (OSTI)

The Maintenance Building is a grade-founded, two-story, steel-framed structure, located adjacent to the Turbine Building in the Energy Conversion Area. It has a reinforced concrete foundation and slab on grade, and insulated sheet metal exterior walls and roof decking.

NONE

1986-06-01T23:59:59.000Z

342

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

SciTech Connect (OSTI)

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

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

2006-01-01T23:59:59.000Z

343

Cryoelectron Microscopy as a Functional Instrument for Systems Biology, Structural Analysis & Experimental Manipulations with Living Cells. A comprehensive review of the current works  

E-Print Network [OSTI]

The aim of this paper is to give an introductory review of the cryoelectron microscopy as a complex data source for the most of the system biology branches, including the most perspective non-local approaches known as "localomics" and "dynamomics". A brief summary of various cryoelectron mi-croscopy methods and corresponding system biological ap-proaches is given in the text. The above classification can be considered as a useful framework for the primary comprehen-sions about cryoelectron microscopy aims and instrumental tools. We do not discuss any of these concepts in details, but merely point out that their methodological complexity follows only from the structure-functional complexity of biological systems which are investigated in this manner. We also postu-late that one can employ some of the cryoelectron microscopic techniques not only for observation, but also for modification and structural refunctionalization of some biological and similar soft matter objects and microscopic samples. In other worlds, we start with the cryoelectron microscopy as a tool for the sys-tem biology and progress to its applying as an instrument for system biology and functional biomimetics; i.e. "system cryobi-ology" goes over into "synthetic cryobiology" or "cryogenic biomimetics". All these conclusions can be deduced from the most recent works of the latest years, including just submitted foreign papers. This article provides an up-to-date description of the conceptual basis for the novel view on the computational cryoelectron microscopy (in silico) approaches and the data mining principles which lie at the very foundation of modern structural analysis and reconstruction.

Oleg V. Gradov; Margaret A. Gradova

2015-01-18T23:59:59.000Z

344

Neutron reflecting supermirror structure  

DOE Patents [OSTI]

An improved neutron reflecting supermirror structure comprising a plurality of stacked sets of bilayers of neutron reflecting materials. The improved neutron reflecting supermirror structure is adapted to provide extremely good performance at high incidence angles, i.e. up to four time the critical angle of standard neutron mirror structures. The reflection of neutrons striking the supermirror structure at a high critical angle provides enhanced neutron throughput, and hence more efficient and economical use of neutron sources. One layer of each set of bilayers consist of titanium, and the second layer of each set of bilayers consist of an alloy of nickel with carbon interstitially present in the nickel alloy.

Wood, James L. (Drayton Plains, MI)

1992-01-01T23:59:59.000Z

345

High speed door assembly  

DOE Patents [OSTI]

A high speed door assembly is described, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

Shapiro, C.

1993-04-27T23:59:59.000Z

346

High speed door assembly  

DOE Patents [OSTI]

A high speed door assembly, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

Shapiro, Carolyn (Idaho Falls, ID)

1993-01-01T23:59:59.000Z

347

The EF-hand motif is the most common calcium-binding motif found in proteins. Several high-resolution structures  

E-Print Network [OSTI]

. This sequence forms a loop that can accommodate calcium or magnesium with distinct geometries: magnesium is usu637 The EF-hand motif is the most common calcium-binding motif found in proteins. Several high matter © 2000 Elsevier Science Ltd. All rights reserved. Introduction Calcium is among life's most

Yue, David

348

Development of improved processing and evaluation methods for high reliability structural ceramics for advanced heat engine applications Phase II. Final report  

SciTech Connect (OSTI)

The research program had as goals the development and demonstration of significant improvements in processing methods, process controls, and nondestructive evaluation (NDE) which can be commercially implemented to produce high reliability silicon nitride components for advanced heat engine applications at temperatures to 1370{degrees}C. In Phase I of the program a process was developed that resulted in a silicon nitride - 4 w% yttria HIP`ed material (NCX 5102) that displayed unprecedented strength and reliability. An average tensile strength of 1 GPa and a strength distribution following a 3-parameter Weibull distribution were demonstrated by testing several hundred buttonhead tensile specimens. The Phase II program focused on the development of methodology for colloidal consolidation producing green microstructure which minimizes downstream process problems such as drying, shrinkage, cracking, and part distortion during densification. Furthermore, the program focused on the extension of the process to gas pressure sinterable (GPS) compositions. Excellent results were obtained for the HIP composition processed for minimal density gradients, both with respect to room-temperature strength and high-temperature creep resistance. Complex component fabricability of this material was demonstrated by producing engine-vane prototypes. Strength data for the GPS material (NCX-5400) suggest that it ranks very high relative to other silicon nitride materials in terms of tensile/flexure strength ratio, a measure of volume quality. This high quality was derived from the closed-loop colloidal process employed in the program.

Pujari, V.J.; Tracey, D.M.; Foley, M.R. [and others

1996-02-01T23:59:59.000Z

349

Setting up the models on NYU's High Performance Computing System I recommend that you start with the exact same structure for running the  

E-Print Network [OSTI]

Setting up the models on NYU's High Performance Computing System I recommend that you start to understand how it all works. This is set up for work on bowery, as this is the main machine for parallel output or data. This file system is backed up, but it is small -- your quota is on the order

Gerber, Edwin

350

High efficiency incandescent lighting  

DOE Patents [OSTI]

Incandescent lighting structure. The structure includes a thermal emitter that can, but does not have to, include a first photonic crystal on its surface to tailor thermal emission coupled to, in a high-view-factor geometry, a second photonic filter selected to reflect infrared radiation back to the emitter while passing visible light. This structure is highly efficient as compared to standard incandescent light bulbs.

Bermel, Peter; Ilic, Ognjen; Chan, Walker R.; Musabeyoglu, Ahmet; Cukierman, Aviv Ruben; Harradon, Michael Robert; Celanovic, Ivan; Soljacic, Marin

2014-09-02T23:59:59.000Z

351

Magnetic and structural transitions in the iron-chalcogenide high-Tc superconductor: K0.8Fe1.76Se2.00  

SciTech Connect (OSTI)

Fe-57 Mossbauer spectroscopy was used to study single-crystals of K0.8Fe1.76Se2.00 from 6K to 673 K. At 6K, the hyperfine field (B-hf) is canted away from the c-axis by 18 +/- 3 degrees. The temperature dependence of B-hf follows a spin wave model with a spin excitation gap of 9 +/- 1 meV. A sudden increase in the linewidth and a corresponding drop in (1/2)eQV(zz) at T-N - 532K are indications of strong coupling between the magnetic and structural transitions. (C) 2012 American Institute of Physics.

Rowan-Weetaluktuk, W.N.; Ryan, D.H.; Cadogan, J.M.; Hu, R.; Budko, S.L.; Canfield, P.C.

2012-02-29T23:59:59.000Z

352

Work Breakdown Structure and Plant/Equipment Designation System Numbering Scheme for the High Temperature Gas- Cooled Reactor (HTGR) Component Test Capability (CTC)  

SciTech Connect (OSTI)

This white paper investigates the potential integration of the CTC work breakdown structure numbering scheme with a plant/equipment numbering system (PNS), or alternatively referred to in industry as a reference designation system (RDS). Ideally, the goal of such integration would be a single, common referencing system for the life cycle of the CTC that supports all the various processes (e.g., information, execution, and control) that necessitate plant and equipment numbers be assigned. This white paper focuses on discovering the full scope of Idaho National Laboratory (INL) processes to which this goal might be applied as well as the factors likely to affect decisions about implementation. Later, a procedure for assigning these numbers will be developed using this white paper as a starting point and that reflects the resolved scope and outcome of associated decisions.

Jeffrey D Bryan

2009-09-01T23:59:59.000Z

353

TOPSAN: a collaborative annotation environment for structural genomics.  

E-Print Network [OSTI]

environment for structural genomics Dana Weekes 1† , S Srihigh-throughput structural genomics centers, despite theirbeing determined by structural genomics centers and high-

Weekes, Dana; Krishna, S; Bakolitsa, Constantina; Wilson, Ian A; Godzik, Adam; Wooley, John

2010-01-01T23:59:59.000Z

354

Calcium silicate insulation structure  

DOE Patents [OSTI]

An insulative structure including a powder-filled evacuated casing utilizes a quantity of finely divided synthetic calcium silicate having a relatively high surface area. The resultant structure-provides superior thermal insulating characteristics over a broad temperature range and is particularly well-suited as a panel for a refrigerator or freezer or the insulative barrier for a cooler or a insulated bottle.

Kollie, Thomas G. (Oak Ridge, TN); Lauf, Robert J. (Oak Ridge, TN)

1995-01-01T23:59:59.000Z

355

The effects of high temperature processing on the structural and optical properties of oxygenated CdS window layers in CdTe solar cells  

SciTech Connect (OSTI)

High efficiency CdTe solar cells typically use oxygenated CdS (CdS:O) window layers. We synthesize CdS:O window layers at room temperature (RT) and 270?°C using reactive sputtering. The band gaps of CdS:O layers deposited at RT increase when O{sub 2}/(O{sub 2}?+?Ar) ratios in the deposition chamber increase. On the other hand, the band gaps of CdS:O layers deposited at 270?°C decrease as the O{sub 2}/(O{sub 2}?+?Ar) ratios increase. Interestingly, however, our high temperature closed-space sublimation (CSS) processed CdTe solar cells using CdS:O window layers deposited at RT and 270?°C exhibit very similar cell performance, including similar short-circuit current densities. To understand the underlying reasons, CdS:O thin films deposited at RT and 270?°C are annealed at temperatures that simulate the CSS process of CdTe deposition. X-ray diffraction, atomic force microscopy, and UV-visible light absorption spectroscopy characterization of the annealed films reveals that the CdS:O films deposited at RT undergo grain regrowth and/or crystallization and exhibit reduced band gaps after the annealing. Our results suggest that CdS:O thin films deposited at RT and 270?°C should exhibit similar optical properties after the deposition of CdTe layers, explaining the similar cell performance.

Paudel, Naba R.; Grice, Corey R.; Xiao, Chuanxiao; Yan, Yanfa [Department of Physics and Astronomy, and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, Ohio 43606 (United States)

2014-07-28T23:59:59.000Z

356

High Performance Computing School COMSC  

E-Print Network [OSTI]

High Performance Computing School COMSC This module aims to provide the students with fundamental knowledge and understanding of techniques associated with High Performance Computing and its practical' skills in analysing and evaluating High Performance Computing and will be structured around

Martin, Ralph R.

357

Development of improved processing and evaluation methods for high reliability structural ceramics for advanced heat engine applications, Phase 1. Final report  

SciTech Connect (OSTI)

The program goals were to develop and demonstrate significant improvements in processing methods, process controls and non-destructive evaluation (NDE) which can be commercially implemented to produce high reliability silicon nitride components for advanced heat engine applications at temperatures to 1,370{degrees}C. The program focused on a Si{sub 3}N{sub 4}-4% Y{sub 2}O{sub 3} high temperature ceramic composition and hot-isostatic-pressing as the method of densification. Stage I had as major objectives: (1) comparing injection molding and colloidal consolidation process routes, and selecting one route for subsequent optimization, (2) comparing the performance of water milled and alcohol milled powder and selecting one on the basis of performance data, and (3) adapting several NDE methods to the needs of ceramic processing. The NDE methods considered were microfocus X-ray radiography, computed tomography, ultrasonics, NMR imaging, NMR spectroscopy, fluorescent liquid dye penetrant and X-ray diffraction residual stress analysis. The colloidal consolidation process route was selected and approved as the forming technique for the remainder of the program. The material produced by the final Stage II optimized process has been given the designation NCX 5102 silicon nitride. According to plan, a large number of specimens were produced and tested during Stage III to establish a statistically robust room temperature tensile strength database for this material. Highlights of the Stage III process demonstration and resultant database are included in the main text of the report, along with a synopsis of the NCX-5102 aqueous based colloidal process. The R and D accomplishments for Stage I are discussed in Appendices 1--4, while the tensile strength-fractography database for the Stage III NCX-5102 process demonstration is provided in Appendix 5. 4 refs., 108 figs., 23 tabs.

Pujari, V.K.; Tracey, D.M.; Foley, M.R.; Paille, N.I.; Pelletier, P.J.; Sales, L.C.; Wilkens, C.A.; Yeckley, R.L. [Norton Co., Northboro, MA (United States)

1993-08-01T23:59:59.000Z

358

INSTITUTE OF PHYSICS PUBLISHING BIOINSPIRATION & BIOMIMETICS Bioinsp. Biomim. 1 (2006) S42S48 doi:10.1088/1748-3182/1/4/S06  

E-Print Network [OSTI]

structure in cetaceans, which produce hydrodynamic thrust as the caudal vertebrae are oscillated dorso locomotor behavior in which the caudal flukes act as a hydrofoil to generate thrust. The oscillatory the angle of attack of the oscillating flukes (Long et al 1997, Fish 1998a, 1998b). Angle of attack

Fish, Frank

359

A rich bounty of AGN in the 9 square degree Bootes survey: high-z obscured AGN and large-scale structure  

E-Print Network [OSTI]

We use observations from the 9 square degree multiwavelength survey in Bootes to identify hundreds of obscured active galactic nuclei (AGN) with high redshifts (z > 0.7), luminosities (L_bol > 10^45 ergs/s), and moderate obscuring columns (N_H > 10^22 cm^-2), and to measure the clustering properties of X-ray AGN at z > 1. In the Bootes region, shallow (5 ks) Chandra X-ray observations have detected ~4,000 X-ray sources, and the same region has been mapped with deep optical imaging and by Spitzer IRAC, which detects ~300,000 point sources, of which ~30,000 have detections in all four IRAC bands, for which we can select AGN on the basis of their mid-IR colors. With the MMT/Hectospec we have obtained modest resolution optical spectra for about half the X-ray sources (out to z > 3) and ~20,000 galaxies (out to z = 0.7). With this multiwavelength data we select >400 AGN per square degree (compared to 12 per square degree from SDSS). Among a sample of IRAC-selected AGN we identify 641 candidate obscured objects based on their R band and IRAC luminosities. We use X-ray stacking techniques to verify that they are obscured AGN and measure their absorbing column densities. We also measure the three-dimensional two-point correlation function for X-ray selected AGN.

R. C. Hickox; C. Jones; W. R. Forman; S. S. Murray; A. Kenter; M. Brodwin; the Chandra XBootes; NOAO Deep Wide-Field Survey; Spitzer IRAC Shallow Survey; AGES Teams

2006-11-21T23:59:59.000Z

360

Effect of oxygen incorporation on the structure and elasticity of Ti-Al-O-N coatings synthesized by cathodic arc and high power pulsed magnetron sputtering  

SciTech Connect (OSTI)

Ti-Al-O-N coatings were synthesized by cathodic arc and high power pulsed magnetron sputtering. The chemical composition of the coatings was determined by means of elastic recoil detection analysis and energy dispersive X-ray spectroscopy. The effect of oxygen incorporation on the stress-free lattice parameters and Young's moduli of Ti-Al-O-N coatings was investigated by X-ray diffraction and nanoindentation, respectively. As nitrogen is substituted by oxygen, implications for the charge balance may be expected. A reduction in equilibrium volume with increasing O concentration is identified by X-ray diffraction and density functional theory calculations of Ti-Al-O-N supercells reveal the concomitant formation of metal vacancies. Hence, the oxygen incorporation-induced formation of metal vacancies enables charge balancing. Furthermore, nanoindentation experiments reveal a decrease in elastic modulus with increasing O concentration. Based on ab initio data, two causes can be identified for this: First, the metal vacancy-induced reduction in elasticity; and second, the formation of, compared to the corresponding metal nitride bonds, relatively weak Ti-O and Al-O bonds.

Hans, M., E-mail: hans@mch.rwth-aachen.de; Baben, M. to; Music, D.; Ebenhöch, J.; Schneider, J. M. [Materials Chemistry, RWTH Aachen University, Kopernikusstr. 10, D-52074 Aachen (Germany); Primetzhofer, D. [Department of Physics and Astronomy, Uppsala University, Lägerhyddsvägen 1, S-75120 Uppsala (Sweden); Kurapov, D.; Arndt, M.; Rudigier, H. [Oerlikon Balzers Coating AG, Iramali 18, LI-9496 Balzers, Principality of Liechtenstein (Liechtenstein)

2014-09-07T23:59:59.000Z

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


361

Robust conductive mesoporous carbon?silica composite films with highly ordered and oriented orthorhombic structures from triblock-copolymer template co-assembly  

SciTech Connect (OSTI)

In this work, we describe a facile approach to improve the robustness of conductive mesoporous carbon-based thin films by the addition of silica to the matrix through the triconstituent organic-inorganic-organic co-assembly of resol (carbon precursor) and tetraethylorthosilicate (silica precursor) with triblock-copolymer Pluronic F127. The pyrolysis of the resol-silica-pluronic F127 film yields a porous composite thin film with well-defined mesostructure. X-Ray diffraction (XRD), grazing incidence small angle X-ray scattering (GISAXS), and electron microscopy measurements indicate that the obtained carbon-based thin films have a highly ordered orthorhombic mesostructure (Fmmm) with uniform large pore size ({approx}3 nm). The orthorhombic mesostructure is oriented and the (010) plane is parallel to the silicon wafer substrate. The addition of silica to the matrix impacts the pore size, surface area, porosity, modulus and conductivity. For composite films with approximately 40 wt% silica, the conductivity is decreased by approximately an order of magnitude in comparison to a pure carbon mesoporous film, but the conductivity is comparable to typical printed carbon inks used in electrochemical sensing, {approx}10 S cm{sup -1}. The mechanical properties of these mesoporous silica-carbon hybrid films are similar to the pure carbon analogs with a Young's modulus between 10 GPa and 15 GPa, but the material is significantly more porous. Moreover, the addition of silica to the matrix appears to improve the adhesion of the mesoporous film to a silicon wafer. These mesoporous silica-carbon composite films have appropriate characteristics for use in sensing applications.

Song, Lingyan; Feng, Dan; Campbell, Casey G.; Gu, Dong; Forster, Aaron M.; Yager, Kevin G.; Fredin, Nathaniel; Lee, Hae-Jeong; Jones, Ronald L.; Zhao, Dongyuan; Vogt, Bryan D. (AZU)

2012-07-11T23:59:59.000Z

362

Fracture of aluminum naval structures  

E-Print Network [OSTI]

Structural catastrophic failure of naval vessels due to extreme loads such as underwater or air explosion, high velocity impact (torpedoes), or hydrodynamic loads (high speed vessels) is primarily caused by fracture. ...

Galanis, Konstantinos, 1970-

2007-01-01T23:59:59.000Z

363

Intergrating Magnetotellurics, Soil Gas Geochemistry and Structural...  

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

Intergrating Magnetotellurics, Soil Gas Geochemistry and Structural Analysis to Identify Hidden, High Enthalpy, Extensional Geothermal Systems Intergrating Magnetotellurics, Soil...

364

Development of cell-laden hydrogels with high mechanical strength for tissue engineering applications  

E-Print Network [OSTI]

The development of materials with biomimetic mechanical and biological properties is of great interest for regenerative medicine applications. Hydrogels are a promising class of biomaterials due to several advantages, ...

Shin, Hyeongho

2014-01-01T23:59:59.000Z

365

Structural system identification: Structural dynamics model validation  

SciTech Connect (OSTI)

Structural system identification is concerned with the development of systematic procedures and tools for developing predictive analytical models based on a physical structure`s dynamic response characteristics. It is a multidisciplinary process that involves the ability (1) to define high fidelity physics-based analysis models, (2) to acquire accurate test-derived information for physical specimens using diagnostic experiments, (3) to validate the numerical simulation model by reconciling differences that inevitably exist between the analysis model and the experimental data, and (4) to quantify uncertainties in the final system models and subsequent numerical simulations. The goal of this project was to develop structural system identification techniques and software suitable for both research and production applications in code and model validation.

Red-Horse, J.R.

1997-04-01T23:59:59.000Z

366

High speed door assembly  

SciTech Connect (OSTI)

This invention is comprised of a high speed door assembly, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

Shapiro, C.

1991-12-31T23:59:59.000Z

367

High Temperature, High Pressure Devices for Zonal Isolation in...  

Open Energy Info (EERE)

remotely and autonomous deployable structures for space and our high temperature composite technology developed for downhole applications. These devices offer several...

368

High power microwave generator  

DOE Patents [OSTI]

A microwave generator efficiently converts the energy of an intense relativistic electron beam (REB) into a high-power microwave emission using the Smith-Purcell effect which is related to Cerenkov radiation. Feedback for efficient beam bunching and high gain is obtained by placing a cylindrical Smith-Purcell transmission grating on the axis of a toroidal resonator. High efficiency results from the use of a thin cold annular highly-magnetized REB that is closely coupled to the resonant structure.

Ekdahl, C.A.

1983-12-29T23:59:59.000Z

369

Visible structures  

E-Print Network [OSTI]

All architecture is the interplay between structure, surface and ornament. Traditionally, ornament adorned structure thereby giving it its meaning. A society with its intellectual foundations resting in faith or the abstract ...

Conway, Helene Marie

1991-01-01T23:59:59.000Z

370

Molecular organization in the native state of woody tissue: Studies of tertiary structure using the Raman microprobe solid state 13C NMR and biomimetic tertiary aggregates. Progress report, July 1, 1989--June 30, 1993  

SciTech Connect (OSTI)

We have previously shown that all relatively pure plant and bacterial celluloses are, in their native states, composites of two lattice forms, I{sub {alpha}} and I{sub {beta}}, and that the two forms possess molecular chains in the same conformations but with different hydrogen bonding patterns. In the current period we have demonstrated that in higher plant cell wall matrices, the hemicelluloses are likely to have a regulatory function during the aggregation of cellulose. Different hemicelluloses appear to influence the aggregation in different ways. We have also developed preliminary evidence indicating the hemicelluloses may have a protective function against the action of some cellulolytic enzymes. The specific accomplishments during the current period are detailed. Demonstration that hemicelluloses present during biogenesis can transform bacterial cellulose into a cellulose typical of higher plant celluloses, and that each hemicellulose has a different effect on the pattern of aggregation. Evidence is presented that the hemicelluloses may limit the action of certain cellulolytic enzymes, suggesting that their function may go beyond regulation to include passive resistance to cellulolytic pathogens. Enhancing the potential of the Raman microprobe technique for mapping variability of lignin in the cell wall by identifying the contribution of the different substructures of lignin to the intensity of the key band in the Raman spectrum of lignin. Mapping of the variability of lignin across two cell wall sections. The mappings have convoluted within them both composition and concentration, but they demonstrate the potential of the method and point to the improvements we are now making so as to distinguish between variability of concentration and variability of composition.

Atalla, R.H.

1993-12-31T23:59:59.000Z

371

High Precision Geophysics & Detailed Structural Exploration ...  

Open Energy Info (EERE)

fault zones at the hot springs. Natural state hot water flow patterns in the fracture network will be interpreted from temperature gradient wells and then tested with...

372

Flow interaction with highly flexible structures  

E-Print Network [OSTI]

and an upstroke (also known as abduction and adduction,edge vortices along with abduction/adduction tip vortices inperiods, a recovery stroke (abduction) with duration T r and

Shoele, Kourosh

2011-01-01T23:59:59.000Z

373

Structural health monitoring for ship structures  

SciTech Connect (OSTI)

Currently the Office of Naval Research is supporting the development of structural health monitoring (SHM) technology for U.S. Navy ship structures. This application is particularly challenging because of the physical size of these structures, the widely varying and often extreme operational and environmental conditions associated with these ships missions, lack of data from known damage conditions, limited sensing that was not designed specifically for SHM, and the management of the vast amounts of data that can be collected during a mission. This paper will first define a statistical pattern recognition paradigm for SHM by describing the four steps of (1) Operational Evaluation, (2) Data Acquisition, (3) Feature Extraction, and (4) Statistical Classification of Features as they apply to ship structures. Note that inherent in the last three steps of this process are additional tasks of data cleansing, compression, normalization and fusion. The presentation will discuss ship structure SHM challenges in the context of applying various SHM approaches to sea trials data measured on an aluminum multi-hull high-speed ship, the HSV-2 Swift. To conclude, the paper will discuss several outstanding issues that need to be addressed before SHM can make the transition from a research topic to actual field applications on ship structures and suggest approaches for addressing these issues.

Farrar, Charles [Los Alamos National Laboratory; Park, Gyuhae [Los Alamos National Laboratory; Angel, Marian [Los Alamos National Laboratory; Bement, Matthew [Los Alamos National Laboratory; Salvino, Liming [NSWC, CADEROCK

2009-01-01T23:59:59.000Z

374

CHARBEL FARHAT Vivian Church Hoff Professor of Aircraft Structures  

E-Print Network [OSTI]

of Aeronautics and Astronautics Director, Army High Performance Computing Research Center Professor, Department-Driven Systems, Finite Element Approximation, Fluid-Structure Interaction, High Performance Computing, Implosion of Aircraft Structures, Stanford University 2007- Director, Army High Performance Computing Research Center

Farhat, Charbel

375

Crystal structure and high temperature transport properties of Yb-filled p-type skutterudites Yb{sub x}Co{sub 2.5}Fe{sub 1.5}Sb{sub 12}  

SciTech Connect (OSTI)

Partially Yb-filled Fe substituted polycrystalline p-type skutterudites with nominal compositions Yb{sub x}Co{sub 2.5}Fe{sub 1.5}Sb{sub 12}, with varying filler concentrations x, were synthesized by reacting the constituent elements and subsequent solid state annealing, followed by densification by hot-pressing. The compositions and filling fractions were confirmed with a combination of Rietveld refinement and elemental analysis. Their thermoelectric properties were evaluated from 300 to 800 K. The Seebeck coefficients for the specimens increase with increasing temperature and plateau at around 750 K. The thermal conductivity decreases with increasing Yb filling fraction, and bipolar conduction becomes evident and increases at elevated temperatures. A maximum ZT value of 0.8 was obtained at 750 K for Yb{sub 0.47}Co{sub 2.6}Fe{sub 1.4}Sb{sub 12}. The thermoelectric properties and potential for further optimization are discussed in light of our results. - Graphical abstract: Display Omitted - Highlights: • Yb-filled Fe-substituted p-type CoSb{sub 3} skutterudites, Yb{sub x}Co{sub 2.5}Fe{sub 1.5}Sb{sub 12}, were structurally and physically characterized. • Both filling fraction and Co-to-Fe ratio affect the transport properties. • High ZT was obtained for the composition with ?50% Yb filling and a slightly lower than nominal Fe content.

Dong, Yongkwan [Department of Physics, University of South Florida, Tampa, FL 33620 (United States); Puneet, Pooja; Tritt, Terry M. [Department of Physics and Astronomy, Kinard Laboratory, Clemson University, Clemson, SC 29634 (United States); Nolas, George S., E-mail: gnolas@usf.edu [Department of Physics, University of South Florida, Tampa, FL 33620 (United States)

2014-01-15T23:59:59.000Z

376

Biomembrane Structure Unit, Biochemistry  

E-Print Network [OSTI]

and membrane proteins. However, the lack of essential high-resolution structural details at the molecular level Watts Abstract | Observing drugs and ligands at their site of action in membrane proteins is now targets in the future will be membrane proteins. This is, perhaps, not surprising, as most (~85

Watts, Anthony

377

Mesoporous Silicon Sponge as an Anti-Pulverization Structure...  

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

Mesoporous Silicon Sponge as an Anti-Pulverization Structure for High-Performance Lithium-ion Battery Anodes. Mesoporous Silicon Sponge as an Anti-Pulverization Structure for...

378

Structural Genomics and Structural Proteomics: A Global Perspective  

E-Print Network [OSTI]

-genome information and the success of high-throughput (HTP) methods in DNA sequencing. It was envisaged that similar HTP methods could be applied to deter- mining the 3-D structures of "all" the proteins (the "proteome, automated technologies for implementing a HTP pipeline approach to structure determination; a focus on novel

Sussman, Joel L.

379

Single Molecule Probes of Lipid Membrane Structure  

E-Print Network [OSTI]

Biological membranes are highly heterogeneous structures that are thought to use this heterogeneity to organize and modify the function of membrane constituents. Probing membrane organization, structure, and changes therein ...

Livanec, Philip W.

2009-12-14T23:59:59.000Z

380

Deployable structures  

E-Print Network [OSTI]

This thesis has the purpose of describing the meaning and applications of deployable structures (making emphasis in the scissor-hinged and sliding mechanisms.) and the development of new geometries, details, and mechanisms ...

Hernández Merchan, Carlos Henrique

1987-01-01T23:59:59.000Z

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


381

Electronic structure of superconductivity refined  

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

on a little understood aspect of the electronic structure in high-temperature superconductors. July 10, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa...

382

2014 GRADUATE STUDIES STRUCTURAL ENGINEERING,  

E-Print Network [OSTI]

, the response of tall buildings to earthquake and wind; steel connection design and behavior; and structural engineering and mechanics · Advanced Applied Mathematics in Engineering · Advanced Dynamics and Smart Environments · High-performance Concrete and Steel · Horizontally Curved Bridges · Industrial Buildings

Wang, Yuhang

383

Dependence of liquefaction behavior on coal characteristics. Part VI. Relationship of liquefaction behavior of a set of high sulfur coals to chemical structural characteristics. Final technical report, March 1981 to February 1984  

SciTech Connect (OSTI)

The initial aim of this research was to use empirical mathematical relationships to formulate a better understanding of the processes involved in the liquefaction of a set of medium rank high sulfur coals. In all, just over 50 structural parameters and yields of product classes were determined. In order to gain a more complete understanding of the empirical relationships between the various properties, a number of relatively complex statistical procedures and tests were applied to the data, mostly selected from the field of multivariate analysis. These can be broken down into two groups. The first group included grouping techniques such as non-linear mapping, hierarchical and tree clustering, and linear discriminant analyses. These techniques were utilized in determining if more than one statistical population was present in the data set; it was concluded that there was not. The second group of techniques included factor analysis and stepwise multivariate linear regressions. Linear discriminant analyses were able to show that five distinct groups of coals were represented in the data set. However only seven of the properties seemed to follow this trend. The chemical property that appeared to follow the trend most closely was the aromaticity, where a series of five parallel straight lines was observed for a plot of f/sub a/ versus carbon content. The factor patterns for each of the product classes indicated that although each of the individual product classes tended to load on factors defined by specific chemical properties, the yields of the broader product classes, such as total conversion to liquids + gases and conversion to asphaltenes, tended to load largely on factors defined by rank. The variance explained and the communalities tended to be relatively low. Evidently important sources of variance have still to be found.

Neill, P. H.; Given, P. H.

1984-09-01T23:59:59.000Z

384

4D printing : towards biomimetic additive manufacturing ; Four dimensional printing : towards biomimetic additive manufacturing ; Towards biomimetic additive manufacturing .  

E-Print Network [OSTI]

??Inherent across all scales in Nature's material systems are multiple design dimensions, the existences of which are products of both evolution and environment. In human… (more)

Tsai, Elizabeth Yinling

2013-01-01T23:59:59.000Z

385

Heat pipe wick with structural enhancement  

DOE Patents [OSTI]

Heat pipe wick structure wherein a stout sheet of perforated material overlays a high performance wick material such as stainless steel felt affixed to a substrate. The inventive structure provides a good flow path for working fluid while maintaining durability and structural stability independent of the structure (or lack of structure) associated with the wick material. In one described embodiment, a wick of randomly laid .about.8 micron thickness stainless steel fibers is sintered to a metal substrate and a perforated metal overlay.

Andraka, Charles E.; Adkins, Douglas R.; Moreno, James B.; Rawlinson, K. Scott; Showalter, Steven K.; Moss, Timothy A.

2003-11-18T23:59:59.000Z

386

4D printing : towards biomimetic additive manufacturing  

E-Print Network [OSTI]

Inherent across all scales in Nature's material systems are multiple design dimensions, the existences of which are products of both evolution and environment. In human manufacturing where design must be preconceived and ...

Tsai, Elizabeth Yinling

2013-01-01T23:59:59.000Z

387

Biomimetic Dye Molecules for Solar Cells  

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

such as those used in solar cells. This requires close monitoring to obtain reproducible solar cells. The polarization dependence of the spectra reveals the orientation of the...

388

Biomimetic materials for protein storage and transport  

DOE Patents [OSTI]

The invention provides a method for the insertion of protein in storage vehicles and the recovery of the proteins from the vehicles, the method comprising supplying isolated protein; mixing the isolated protein with a fluid so as to form a mixture, the fluid comprising saturated phospholipids, lipopolymers, and a surfactant; cycling the mixture between a first temperature and a second temperature; maintaining the mixture as a solid for an indefinite period of time; diluting the mixture in detergent buffer so as to disrupt the composition of the mixture, and diluting to disrupt the fluid in its low viscosity state for removal of the guest molecules by, for example, dialysis, filtering or chromatography dialyzing/filtering the emulsified solid.

Firestone, Millicent A. (Elmhurst, IL); Laible, Philip D. (Villa Park, IL)

2012-05-01T23:59:59.000Z

389

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply for aCouldBiofuelHelpBiologyB I I O OBiomimetic

390

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply for aCouldBiofuelHelpBiologyB I I O

391

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply for aCouldBiofuelHelpBiologyB I I OBiomimetic Dye

392

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply for aCouldBiofuelHelpBiologyB I I OBiomimetic

393

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply for aCouldBiofuelHelpBiologyB I I

394

Biomimetic Dye Molecules for Solar Cells  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply for aCouldBiofuelHelpBiologyB I IBiomimetic Dye

395

High performance polymeric foams  

SciTech Connect (OSTI)

The aim of this work was to investigate the foamability of high-performance polymers (polyethersulfone, polyphenylsulfone, polyetherimide and polyethylenenaphtalate). Two different methods have been used to prepare the foam samples: high temperature expansion and two-stage batch process. The effects of processing parameters (saturation time and pressure, foaming temperature) on the densities and microcellular structures of these foams were analyzed by using scanning electron microscopy.

Gargiulo, M.; Sorrentino, L. [Institute for Composite and Biomedical Materials (IMCB)-CNR, P.le Tecchio 80, 80125 Naples (Italy); Iannace, S. [Institute for Composite and Biomedical Materials (IMCB)-CNR, P.le Tecchio 80, 80125 Naples (Italy) and Technological District on Polymeric and Composite Materials Engineering and Structures (IMAST), P.le E.Fermi 1, location Porto del Granatello, 80055 Portici (Naples)

2008-08-28T23:59:59.000Z

396

Air cathode structure manufacture  

DOE Patents [OSTI]

An improved air cathode structure for use in primary batteries and the like. The cathode structure includes a matrix active layer, a current collector grid on one face of the matrix active layer, and a porous, nonelectrically conductive separator on the opposite face of the matrix active layer, the collector grid and separator being permanently bonded to the matrix active layer. The separator has a preselected porosity providing low IR losses and high resistance to air flow through the matrix active layer to maintain high bubble pressure during operation of the battery. In the illustrated embodiment, the separator was formed of porous polypropylene. A thin hydrophobic film is provided, in the preferred embodiment, on the current collecting metal grid.

Momyer, William R. (Palo Alto, CA); Littauer, Ernest L. (Los Altos Hills, CA)

1985-01-01T23:59:59.000Z

397

New framework hydrous silicate K{sub 3}Sc[Si{sub 3}O{sub 9}] {center_dot} H{sub 2}O related to the high-temperature anhydrous silicate K{sub 3}Ho[Si{sub 3}O{sub 9}] and symmetry analysis of a phase transition with prediction of structures  

SciTech Connect (OSTI)

Crystals of a new framework silicate K{sub 3}Sc[Si{sub 3}O{sub 9}] {center_dot} H{sub 2}O, space group Pm2{sub 1}n (nonstandard setting of space group Pmn2{sub 1} = C{sub 2v}{sup 7}), are obtained under hydrothermal conditions. The structure is determined without preliminary knowledge of the chemical formula. The absolute configuration is determined. The structure is close to that of the high-temperature K{sub 3}Ho[Si{sub 3}O{sub 9}] phase, which was obtained upon the heating of K{sub 3}HoSi{sub 3}O{sub 8}(OH){sub 2}. This structural similarity is due to the specific conditions of synthesis and an analogous formula, where holmium is replaced by scandium. A symmetry analysis shows that the high local symmetry of a block (rod) is responsible for the first-order phase transition of both the order-disorder (OD) and displacement type. The number of structures in which the simplest and high-symmetry layers are multiplied by different symmetry elements are predicted.

Belokoneva, E. L., E-mail: elbel@geol.msu.ru; Zorina, A. P.; Dimitrova, O. V. [Moscow State University, Faculty of Geology (Russian Federation)

2013-07-15T23:59:59.000Z

398

Assessment of the Contemporary Population Structure and Admixture of Atlantic Swordfish (Xiphias gladius L.) via Mixed Stock Analysis and Bayesian Clustering of Multiple Nuclear SNPS Genotyped through High Resolution Melting  

E-Print Network [OSTI]

North Atlantic and South Atlantic swordfish (Xiphias gladius L.) are currently managed as two stocks separated at 5°N. While previous studies of genetic population structure using both mitochondrial and nuclear DNA confirm two genetically distinct...

Smith, Brad 1979-

2012-11-28T23:59:59.000Z

399

Highly oxidized superconductors  

DOE Patents [OSTI]

Novel superconducting materials in the form of compounds, structures or phases are formed by performing otherwise known syntheses in a highly oxidizing atmosphere rather than that created by molecular oxygen at atmospheric pressure or below. This leads to the successful synthesis of novel superconducting compounds which are thermodynamically stable at the conditions under which they are formed.

Morris, Donald E. (Kensington, CA)

1994-01-01T23:59:59.000Z

400

Highly oxidized superconductors  

DOE Patents [OSTI]

Novel superconducting materials in the form of compounds, structures or phases are formed by performing otherwise known synthesis in a highly oxidizing atmosphere rather than that created by molecular oxygen at atmospheric pressure or below. This leads to the successful synthesis of novel superconducting compounds which are thermodynamically stable at the conditions under which they are formed. 16 figs.

Morris, D.E.

1994-09-20T23:59:59.000Z

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


401

High Energy Photoproduction  

E-Print Network [OSTI]

The experimental and phenomenological status of high energy photoproduction is reviewed. Topics covered include the structure of the photon, production of jets, heavy flavours and prompt photons, rapidity gaps, energy flow and underlying events. The results are placed in the context of the current understanding of QCD, with particular application to present and future hadron and lepton colliders.

J. M. Butterworth; M. Wing

2005-09-15T23:59:59.000Z

402

Superconducting structure  

DOE Patents [OSTI]

A superconductive structure including a dielectric oxide substrate, a thin buffer layer of a superconducting material thereon; and, a layer of a rare earth-barium-copper oxide superconducting film thereon the thin layer of yttrium-barium-copper oxide, the rare earth selected from the group consisting of samarium, gadolinium, ytterbium, erbium, neodymium, dysprosium, holmium, lutetium, a combination of more than one element from the rare earth group and a combination of one or more elements from the rare earth group with yttrium, the buffer layer of superconducting material characterized as having chemical and structural compatibility with the dielectric oxide substrate and the rare earth-barium-copper oxide superconducting film is provided.

Kwon, Chuhee (Los Alamos, NM); Jia, Quanxi (Los Alamos, NM); Foltyn, Stephen R. (Los Alamos, NM)

2003-04-01T23:59:59.000Z

403

Terminal structure  

DOE Patents [OSTI]

A terminal structure (2) for a superconducting cable (1) is described. It consists of a conductor (2a) and an insulator (2b) that surrounds the conductor (2a), wherein the superconducting cable (1) has a core with a superconducting conductor (5) and a layer of insulation that surrounds the conductor (5), and wherein the core is arranged in such a way that it can move longitudinally in a cryostat. The conductor (2a) of the terminal structure (2) is electrically connected with the superconducting conductor (5) or with a normal conductor (6) that is connected with the superconducting conductor (5) by means of a tubular part (7) made of an electrically conductive material, wherein the superconducting conductor (5) or the normal conductor (6) can slide in the part (7) in the direction of the superconductor.

Schmidt, Frank (Langenhagen, DE); Allais, Arnaud (Hannover, DE); Mirebeau, Pierre (Villebon sur Yvette, FR); Ganhungu, Francois (Vieux-Reng, FR); Lallouet, Nicolas (Saint Martin Boulogne, FR)

2009-10-20T23:59:59.000Z

404

Superconducting Structure  

DOE Patents [OSTI]

A superconductive structure including a dielectric oxide substrate, a thin buffer layer of a superconducting material thereon; and, a layer of a rare earth-barium-copper oxide superconducting film thereon the thin layer of yttrium-barium-copper oxide, the rare earth selected from the group consisting of samarium, gadolinium, ytterbium, erbium, neodymium, dysprosium, holmium, lutetium, a combination of more than one element from the rare earth group and a combination of one or more elements from the rare earth group with yttrium, the buffer layer of superconducting material characterized as having chemical and structural compatibility with the dielectric oxide substrate and the rare earth-barium-copper oxide superconducting film is provided.

Kwon, Chuhee (Los Alamos, NM); Jia, Quanxi (Los Alamos, NM); Foltyn, Stephen R. (Los Alamos, NM)

2005-09-13T23:59:59.000Z

405

Airfoil structure  

DOE Patents [OSTI]

Past airfoil configurations have been used to improve aerodynamic performance and engine efficiencies. The present airfoil configuration further increases component life and reduces maintenance by reducing internal stress within the airfoil itself. The airfoil includes a chord and a span. Each of the chord and the span has a bow being summed to form a generally ``C`` configuration of the airfoil. The generally ``C`` configuration includes a compound bow in which internal stresses resulting from a thermal temperature gradient are reduced. The structural configuration reduces internal stresses resulting from thermal expansion. 6 figs.

Frey, G.A.; Twardochleb, C.Z.

1998-01-13T23:59:59.000Z

406

Airfoil structure  

DOE Patents [OSTI]

Past airfoil configurations have been used to improve aerodynamic performance and engine efficiencies. The present airfoil configuration further increases component life and reduces maintenance by reducing internal stress within the airfoil itself. The airfoil includes a chord and a span. Each of the chord and the span has a bow being summed to form a generally "C" configuration of the airfoil. The generally "C" configuration includes a compound bow in which internal stresses resulting from a thermal temperature gradient are reduced. The structural configuration reduces internal stresses resulting from thermal expansion.

Frey, Gary A. (Poway, CA); Twardochleb, Christopher Z. (Alpine, CA)

1998-01-01T23:59:59.000Z

407

Developing High Capacity, Long Life Anodes  

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

long life and improved Safety for PHEV and EV applications. Objectives Develop a low cost synthesis methods to prepare high energy anodes Full structural and...

408

Wind effects on large-scale buildings and structures : field measurements, wind tunnel tests and numerical prediction.  

E-Print Network [OSTI]

??Modern large-scale buildings and structures, such as super tall buildings and large roof structures, are usually constructed with innovative structural systems and high strength materials;… (more)

Fu, Jiyang (???)

2007-01-01T23:59:59.000Z

409

Structural, chemical, and electronic state on La[subscript 0.7]Sr[subscript 0.3]MnO[subscript 3] dense thin-film surfaces at high temperature - Surface segregation  

E-Print Network [OSTI]

The evolution of the surface topographic and electronic structure and chemical state of the La0.7Sr0.3MnO3 (LSMO) thin films were probed using Scanning Tunneling microscopy and X-ray photoelectron spectroscopy to identify ...

Jalili, Helia

410

Armor structures  

DOE Patents [OSTI]

An armor structure includes first and second layers individually containing a plurality of i-beams. Individual i-beams have a pair of longitudinal flanges interconnected by a longitudinal crosspiece and defining opposing longitudinal channels between the pair of flanges. The i-beams within individual of the first and second layers run parallel. The laterally outermost faces of the flanges of adjacent i-beams face one another. One of the longitudinal channels in each of the first and second layers faces one of the longitudinal channels in the other of the first and second layers. The channels of the first layer run parallel with the channels of the second layer. The flanges of the first and second layers overlap with the crosspieces of the other of the first and second layers, and portions of said flanges are received within the facing channels of the i-beams of the other of the first and second layers.

Chu, Henry Shiu-Hung [Idaho Falls, ID; Lacy, Jeffrey M [Idaho Falls, ID

2008-04-01T23:59:59.000Z

411

Phase-space structures II: Hierarchical Structure Finder  

E-Print Network [OSTI]

A new multi-dimensional Hierarchical Structure Finder (HSF) to study the phase-space structure of dark matter in N-body cosmological simulations is presented. The algorithm depends mainly on two parameters, which control the level of connectivity of the detected structures and their significance compared to Poisson noise. By working in 6D phase-space, where contrasts are much more pronounced than in 3D position space, our HSF algorithm is capable of detecting subhaloes including their tidal tails, and can recognise other phase-space structures such as pure streams and candidate caustics. If an additional unbinding criterion is added, the algorithm can be used as a self-consistent halo and subhalo finder. As a test, we apply it to a large halo of the Millennium Simulation, where 19 % of the halo mass are found to belong to bound substructures, which is more than what is detected with conventional 3D substructure finders, and an additional 23-36 % of the total mass belongs to unbound HSF structures. The distribution of identified phase-space density peaks is clearly bimodal: high peaks are dominated by the bound structures and low peaks belong mostly to tidal streams. In order to better understand what HSF provides, we examine the time evolution of structures, based on the merger tree history. Bound structures typically make only up to 6 orbits inside the main halo. Still, HSF can identify at the present time at least 80 % of the original content of structures with a redshift of infall as high as z space.

M. Maciejewski; S. Colombi; V. Springel; C. Alard; F. R. Bouchet

2008-12-01T23:59:59.000Z

412

2011 Spring : Highly Distinguished Honors Highly Distinguished  

E-Print Network [OSTI]

Elizabeth Campbell Highly Distinguished Bowker Ripley Eden Highly Distinguished Brandfass Lara Rose Highly Distinguished Brotherton Cara Price Highly Distinguished Brown Anna Laughlin Highly Distinguished Brown Chloe Alix Highly Distinguished Brown Kelsey Michelle Highly Distinguished Brown Kyle Truman Highly

Kasman, Alex

413

Process to make structured particles  

DOE Patents [OSTI]

Disclosed is a process for making a composite material that contains structured particles. The process includes providing a first precursor in the form of a dry precursor powder, a precursor liquid, a precursor vapor of a liquid and/or a precursor gas. The process also includes providing a plasma that has a high field zone and passing the first precursor through the high field zone of the plasma. As the first precursor passes through the high field zone of the plasma, at least part of the first precursor is decomposed. An aerosol having a second precursor is provided downstream of the high field zone of the plasma and the decomposed first material is allowed to condense onto the second precursor to from structured particles.

Knapp, Angela Michelle; Richard, Monique N; Luhrs, Claudia; Blada, Timothy; Phillips, Jonathan

2014-02-04T23:59:59.000Z

414

Studies of block copolypeptide synthesis, self-assembly, and structure-directing ability  

E-Print Network [OSTI]

(Porosimetry) .............................................................31 2.6. Circular Dichroism (CD) ..............................................................37 III BIOMIMETIC SYNTHESIS OF INORGANIC NANOSPHERES .........40 3... diameter as measured by DLS...................................................................................................55 3.3 Hydrodynamic diameter of AgBr and AgBr/silica core-shell nanospheres measured by DLS...

Jan, Jeng-Shiung

2007-04-25T23:59:59.000Z

415

Structure, Dynamics, and Function in the Major Light-Harvesting Complex of Photosystem II  

E-Print Network [OSTI]

of renewable energy, powering the growth of natural systems. Biomimetic devices offer one approach to harvest, store, and use solar power for the world's energy needs.[1] The first step in the construction-protein complexes (PPC) convert sunlight to chemical energy with near unity quantum efficiency. PPCs exhibit

Fleming, Graham R.

416

Experimental data confronts nuclear structure  

SciTech Connect (OSTI)

The physical content of experimental data for a variety of excitation energies and angular momenta is summarized. The specific nuclear structure questions which these data address are considered. The specific regions discussed are: low-spin data near the particle separation thresholds; low-spin data at intermediate excitation energies; high-spin, near-yrast data and high-spin data at larger excitation energies. 63 refs., 14 figs., 1 tab.

Garrett, J.D.

1988-01-01T23:59:59.000Z

417

2009 Spring : Highly Distinguished Honors Highly Distinguished  

E-Print Network [OSTI]

Armstrong Anna P Highly Distinguished Armstrong Jack Ray Highly Distinguished Armstrong Sarah Rose Highly

Kasman, Alex

418

Plasma-based accelerator structures  

SciTech Connect (OSTI)

Plasma-based accelerators have the ability to sustain extremely large accelerating gradients, with possible high-energy physics applications. This dissertation further develops the theory of plasma-based accelerators by addressing three topics: the performance of a hollow plasma channel as an accelerating structure, the generation of ultrashort electron bunches, and the propagation of laser pulses is underdense plasmas.

Schroeder, Carl B.

1999-12-01T23:59:59.000Z

419

Experimental Study of Nucleon Structure and QCD  

SciTech Connect (OSTI)

Overview of Experimental Study of Nucleon Structure and QCD, with focus on the spin structure. Nucleon (spin) Structure provides valuable information on QCD dynamics. A decade of experiments from JLab yields these exciting results: (1) valence spin structure, duality; (2) spin sum rules and polarizabilities; (3) precision measurements of g{sub 2} - high-twist; and (4) first neutron transverse spin results - Collins/Sivers/A{sub LT}. There is a bright future as the 12 GeV Upgrade will greatly enhance our capability: (1) Precision determination of the valence quark spin structure flavor separation; and (2) Precision extraction of transversity/tensor charge/TMDs.

Jian-Ping Chen

2012-03-01T23:59:59.000Z

420

2012 Fall : Highly Distinguished Honors Highly Distinguished  

E-Print Network [OSTI]

Distinguished Andersen Meredith Esther Highly Distinguished Anderson Anna Kathleen Highly Distinguished Anderson Leah Ellen Highly Distinguished Anderson Lucy Paige Highly Distinguished Andrews James Matheson Highly Distinguished Aquino Jeri-Lynn Highly Distinguished Armistead Mary Chandler Highly Distinguished Armstrong Jessa

Kasman, Alex

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


421

Passive Apaptive Damping for High Stiffness-low Mass Materials Incorporating Negative Stiffness Elements  

E-Print Network [OSTI]

High stiffness / low mass materials or structures reduce structure weight in transportation, but show little inherent damping. A new composite material that exhibits high stiffness and high damping might reduce issues with vibration in mechanical...

Cha, Gene

2013-11-07T23:59:59.000Z

422

Oxides having high energy densities  

DOE Patents [OSTI]

Certain disclosed embodiments generally relate to oxide materials having relatively high energy and/or power densities. Various aspects of the embodiments are directed to oxide materials having a structure B.sub.i(M.sub.jY.sub.k)O.sub.2, for example, a structure Li.sub.j(Ni.sub.jY.sub.k)O.sub.2 such as Li(Ni.sub.0.5Mn.sub.0.5)O.sub.2. In this structure, Y represents one or more atoms, each independently selected from the group consisting of alkaline earth metals, transition metals, Group 14 elements, Group 15, or Group 16 elements. In some embodiments, such an oxide material may have an O3 crystal structure, and/or a layered structure such that the oxide comprises a plurality of first, repeating atomic planes comprising Li, and a plurality of second, repeating atomic planes comprising Ni and/or Y.

Ceder, Gerbrand; Kang, Kisuk

2013-09-10T23:59:59.000Z

423

Structural Rearrangements in Water Viewed Through Two- Dimensional Infrared Spectroscopy  

E-Print Network [OSTI]

Compared with other molecular liquids, water is highly structured because of its ability to form up to four hydrogen bonds, resulting in a tetrahedral network of molecules. However, this underlying intermolecular structure ...

Roberts, Sean Thomas

424

Structure and function of Pseudomonas aeruginosa protein PA1324 (21170)  

E-Print Network [OSTI]

Northwest National Laboratory, Biological Sciences Division, Northeast Structural Genomics Consortium and Northeast Structural Genomics Consortium, Miami University, Oxford, Ohio 45056 Received 12 June 2008 aeruginosa PA1324; NMR; functional genomics; NMR high-throughput screens; protein-ligand binding; protein

Powers, Robert

425

New Crystal Structures Lift Fog around Protein Folding  

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

New Crystal Structures Lift Fog around Protein Folding New Crystal Structures Lift Fog around Protein Folding Print Wednesday, 25 July 2012 00:00 Nature's proteins set a high bar...

426

Sandia National Laboratories: Structural Health Monitoring  

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

and reduce downtime. A particular focus is to mitigate the large rise in costs for offshore O&M due to access difficulty, weather, high sea states, etc. using structural health...

427

The behaviour of concrete structures in fire   

E-Print Network [OSTI]

The nature of concrete-based structures means that they generally perform very well in fire. However, concrete is a complex material and its properties can change dramatically when exposed to high temperatures. This paper provides a ‘state...

Fletcher, Ian A; Welch, Stephen; Torero, Jose L; Carvel, Ricky O; Usmani, Asif

2007-03-29T23:59:59.000Z

428

Structural Complexity of a Composite Amyloid Fibril  

E-Print Network [OSTI]

The molecular structure of amyloid fibrils and the mechanism of their formation are of substantial medical and biological importance, but present an ongoing experimental and computational challenge. An early high-resolution ...

Lewandowski, Jozef R.

429

Structure glass technology : systems and applications  

E-Print Network [OSTI]

Glass cannot compete with steel in terms of strength or durability, but it is the only structural material that offers the highly sought after qualities of translucency and transparency. The use of glass has evolved from ...

Leitch, Katherine K. (Katherine Kristen)

2005-01-01T23:59:59.000Z

430

Method of casting patterned dielectric structures  

DOE Patents [OSTI]

A pattern of dielectric structures are formed directly on a substrate in a single step using sol-gel chemistry and molding procedures. The resulting dielectric structures are useful in vacuum applications for electronic devices. Porous, lightweight structures having a high aspect ratio that are suitable for use as spacers between the faceplate and baseplate of a field emission display can be manufactured using this method.

Poco, John F. (Livermore, CA); Hrubesh, Lawrence W. (Livermore, CA)

2001-01-01T23:59:59.000Z

431

Stabilized fuel with silica support structure  

SciTech Connect (OSTI)

This report describes a stabilized fuel which is supported by a silica support structure. The silica support structure provides a low density, high porosity vehicle for safely carrying hydrocarbon fuels. The silica support structure for hydrocarbon fuel does not produce toxic material residues on combustion which would pose environmentally sensitive disposal problems. The silica stabilized fuel composition is useful as a low temperature, continuous burning fire starter for wood or charcoal.

Poco, J.F.; Hrubesh, L.W.

1991-12-31T23:59:59.000Z

432

Refinement of the crystal structure of the high-temperature phase G0 in (NH4)2WO2F4 (powder, x-ray, and neutron scattering)  

SciTech Connect (OSTI)

The (NH4)2WO2F4 compound undergoes a series of phase transitions: G0 -> 201 K -> G1 -> 160 K -> G2, with a significant change in entropy ( S1 ~ Rln10 at the G0 -> G1 transition), which indicates significant orientational disordering in the G0 phase and the order disorder type of the phase transition. X-ray diffraction is used to identify the crystal structure of the G0 phase as rhombohedral (sp. gr. Cmcm, Z = 4), determine the lattice parameters and the positions of all atoms (except hydrogen), and show that [WO2F4]2 ions can form a superposition of dynamic and static orientational disorders in the anionic sublattice. A determination of the orientational position of [NH4]+ ions calls for the combined method of elastic and inelastic neutron scattering. Inelastic neutron scattering is used to determine the state of hindered rotation for ammonium ions in the G0 phase. Powder neutron diffraction shows that the orientational disorder of NH4 ions can adequately be described within the free rotation approximation.

Novak, D. M. [Joint Institute for Nuclear Research, Dubna, Russia; Smirnov, Lev S [Alikhanov Institute for Theoretical and Experimental Physics, Moscow, Russia; Kolesnikov, Alexander I [ORNL; Voronin, Vladimir [Institute of Metal Physics, Russia; Berger, I. F. [Institute of Metal Physics, Russia; Laptash, N. M. [Institute of Chemistry, Vladivostok, Russia; Vasil'ev, N. M. [Kirensky Institute of Physics, Krasnoyarsk, Russia; Flerov, I. N. [Kirensky Institute of Physics, Krasnoyarsk, Russia

2013-01-01T23:59:59.000Z

433

The structure and emission model of the relativistic jet in the quasar 3C 279 inferred from radio to high-energy gamma-ray observations in 2008-2010  

E-Print Network [OSTI]

We present time-resolved broad-band observations of the quasar 3C 279 obtained from multi-wavelength campaigns conducted during the first two years of the Fermi Gamma-ray Space Telescope mission. While investigating the previously reported gamma-ray/optical flare accompanied by a change in optical polarization, we found that the optical emission appears delayed with respect to the gamma-ray emission by about 10 days. X-ray observations reveal a pair of `isolated' flares separated by ~90 days, with only weak gamma-ray/optical counterparts. The spectral structure measured by Spitzer reveals a synchrotron component peaking in the mid-infrared band with a sharp break at the far-infrared band during the gamma-ray flare, while the peak appears in the mm/sub-mm band in the low state. Selected spectral energy distributions are fitted with leptonic models including Comptonization of external radiation produced in a dusty torus or the broad-line region. Adopting the interpretation of the polarization swing involving pr...

Hayashida, M; Nalewajko, K; Sikora, M; Wehrle, A E; Ogle, P; Collmar, W; Larsson, S; Fukazawa, Y; Itoh, R; Chiang, J; Stawarz, L; Blandford, R D; Richards, J L; Max-Moerbeck, W; Readhead, A; Buehler, R; Cavazzuti, E; Ciprini, S; Gehrels, N; Reimer, A; Szostek, A; Tanaka, T; Tosti, G; Uchiyama, Y; Kawabata, K S; Kino, M; Sakimoto, K; Sasada, M; Sato, S; Uemura, M; Yamanaka, M; Greiner, J; Kruehler, T; Rossi, A; Macquart, J P; Bock, D C -J; Villata, M; Raiteri, C M; Agudo, I; Aller, H D; Aller, M F; Arkharov, A A; Bach, U; Benitez, E; Berdyugin, A; Blinov, D A; Blumenthal, K; Boettcher, M; Buemi, C S; Carosati, D; Chen, W P; Di Paola, A; Dolci, M; Efimova, N V; Forne, E; Gomez, J L; Gurwell, M A; Heidt, J; Hiriart, D; Jordan, B; Jorstad, S G; Joshi, M; Kimeridze, G; Konstantinova, T S; Kopatskaya, E N; Koptelova, E; Kurtanidze, O M; Lahteenmaki, A; Lamerato, A; Larionov, V M; Larionova, E G; Larionova, L V; Leto, P; Lindfors, E; Marscher, A P; McHardy, I M; Molina, S N; Morozova, D A; Nikolashvili, M G; Nilsson, K; Reinthal, R; Roustazadeh, P; Sakamoto, T; Sigua, L A; Sillanpaa, A; Takalo, L; Tammi, J; Taylor, B; Tornikoski, M; Trigilio, C; Troitsky, I S; Umana, G

2012-01-01T23:59:59.000Z

434

High field gradient particle accelerator  

DOE Patents [OSTI]

A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications is disclosed. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle. 10 figs.

Nation, J.A.; Greenwald, S.

1989-05-30T23:59:59.000Z

435

High field gradient particle accelerator  

DOE Patents [OSTI]

A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle.

Nation, John A. (Ithaca, NY); Greenwald, Shlomo (Haifa, IL)

1989-01-01T23:59:59.000Z

436

Heat pipe with embedded wick structure  

DOE Patents [OSTI]

A heat pipe has an embedded wick structure that maximizes capillary pumping capability. Heat from attached devices such as integrated circuits evaporates working fluid in the heat pipe. The vapor cools and condenses on a heat dissipation surface. The condensate collects in the wick structure, where capillary pumping returns the fluid to high heat areas.

Adkins, Douglas Ray (Albuquerque, NM); Shen, David S. (Albuquerque, NM); Tuck, Melanie R. (Albuquerque, NM); Palmer, David W. (Albuquerque, NM); Grafe, V. Gerald (Corrales, NM)

1998-01-01T23:59:59.000Z

437

Heat pipe with embedded wick structure  

DOE Patents [OSTI]

A heat pipe has an embedded wick structure that maximizes capillary pumping capability. Heat from attached devices such as integrated circuits evaporates working fluid in the heat pipe. The vapor cools and condenses on a heat dissipation surface. The condensate collects in the wick structure, where capillary pumping returns the fluid to high heat areas.

Adkins, Douglas Ray (Albuquerque, NM); Shen, David S. (Albuquerque, NM); Tuck, Melanie R. (Albuquerque, NM); Palmer, David W. (Albuquerque, NM); Grafe, V. Gerald (Corrales, NM)

1999-01-01T23:59:59.000Z

438

Gaussian beams in inhomogeneous anisotropic layered structures  

E-Print Network [OSTI]

Gaussian beams in inhomogeneous anisotropic layered structures Vlastislav Cerven´y 1 ) and Ivan@ig.cas.cz. Summary Gaussian beams concentrated close to rays of high-frequency seismic body waves prop- agating in an inhomogeneous anisotropic layered structure are studied. The amplitude profiles of the Gaussian beam along

Cerveny, Vlastislav

439

Heat pipe with embedded wick structure  

DOE Patents [OSTI]

A heat pipe has an embedded wick structure that maximizes capillary pumping capability. Heat from attached devices such as integrated circuits evaporates working fluid in the heat pipe. The vapor cools and condenses on a heat dissipation surface. The condensate collects in the wick structure, where capillary pumping returns the fluid to high heat areas. 7 figs.

Adkins, D.R.; Shen, D.S.; Tuck, M.R.; Palmer, D.W.; Grafe, V.G.

1998-06-23T23:59:59.000Z

440

2013 Fall : Highly Distinguished Honors Highly Distinguished  

E-Print Network [OSTI]

Anderson Chelsea Mariah Highly Distinguished Anderson Madison Olivia Highly Distinguished Andrews James Askew Mary Frances Highly Distinguished Augustine Andrew William Highly Distinguished Austin Adrian Bailes Mary Elizabeth Highly Distinguished Bailey Erika Leigh Highly Distinguished Bailey Margaret

Kasman, Alex

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


441

Quasar Structure and Cosmological Feedback  

E-Print Network [OSTI]

Feedback from quasars and AGNs is being invoked frequently in several cosmological settings. Currently, order of magnitude, or more, uncertainties in the structure of both the wind and the 'obscuring torus' make predictions highly uncertain. To make testable models of this 'cosmological feedback' it is essential to understand the detailed structure of AGNs sufficiently well to predict their properties for the whole quasar population, at all redshifts. Progress in both areas is rapid, and I describe the near-term prospects for reducing these uncertainties for 'slow' (non-relativistic) AGN winds and the obscuring torus.

Martin Elvis

2006-06-05T23:59:59.000Z

442

Structural Code Considerations for Solar Rooftop Installations.  

SciTech Connect (OSTI)

Residential rooftop solar panel installations are limited in part by the high cost of structural related code requirements for field installation. Permitting solar installations is difficult because there is a belief among residential permitting authorities that typical residential rooftops may be structurally inadequate to support the additional load associated with a photovoltaic (PV) solar installation. Typical engineering methods utilized to calculate stresses on a roof structure involve simplifying assumptions that render a complex non-linear structure to a basic determinate beam. This method of analysis neglects the composite action of the entire roof structure, yielding a conservative analysis based on a rafter or top chord of a truss. Consequently, the analysis can result in an overly conservative structural analysis. A literature review was conducted to gain a better understanding of the conservative nature of the regulations and codes governing residential construction and the associated structural system calculations.

Dwyer, Stephen F.; Dwyer, Brian P.; Sanchez, Alfred

2014-12-01T23:59:59.000Z

443

NUCLEAR STRUCTURE DATABASE  

E-Print Network [OSTI]

CALIFORNIA NUCLEAR STRUCTURE DATABASE R. B. Firestone and E.11089 NUCLEAR STRUCTURE DATABASE by R.B. Firestone and E.iii- NUCLEAR STRUCTURE DATABASE R.B Firestone and E. Browne

Firestone, R.B.

2010-01-01T23:59:59.000Z

444

Permanent magnet design for high-speed superconducting bearings  

DOE Patents [OSTI]

A high temperature superconducting bearing including a permanent magnet rotor levitated by a high temperature superconducting structure is disclosed. The rotor preferably includes one or more concentric permanent magnet rings coupled to permanent magnet ring structures having substantially triangular and quadrangular cross-sections. Both alternating and single direction polarity magnet structures can be used in the bearing. 9 figs.

Hull, J.R.; Uherka, K.L.; Abdoud, R.G.

1996-09-10T23:59:59.000Z

445

Permanent magnet design for high-speed superconducting bearings  

DOE Patents [OSTI]

A high temperature superconducting bearing including a permanent magnet rotor levitated by a high temperature superconducting structure. The rotor preferably includes one or more concentric permanent magnet rings coupled to permanent magnet ring structures having substantially triangular and quadrangular cross-sections. Both alternating and single direction polarity magnet structures can be used in the bearing.

Hull, John R. (5519 S. Bruner, Hinsdale, IL 60521); Uherka, Kenneth L. (830 Ironwood, Frankfort, IL 60423); Abdoud, Robert G. (13 Country Oaks La., Barrington Hills, IL 60010)

1996-01-01T23:59:59.000Z

446

17 GHz High Gradient Accelerator Research  

SciTech Connect (OSTI)

This is a report on the MIT High Gradient Accelerator Research program which has included: Operation of the 17 GHz, 25 MeV MIT/Haimson Research Corp. electron accelerator at MIT, the highest frequency, stand-alone accelerator in the world; collaboration with members of the US High Gradient Collaboration, including the design and test of novel structures at SLAC at 11.4 GHz; the design, construction and testing of photonic bandgap structures, including metallic and dielectric structures; the investigation of the wakefields in novel structures; and the training of the next generation of graduate students and postdoctoral associates in accelerator physics.

Temkin, Richard J. [MIT] [MIT; Shapiro, Michael A. [MIT] [MIT

2013-07-10T23:59:59.000Z

447

structural biology | EMSL  

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

structural biology structural biology Leads No leads are available at this time. Improved protocol to purify untagged amelogenin - Application to murine amelogenin containing the...

448

Method of manufacturing a heat pipe wick with structural enhancement  

DOE Patents [OSTI]

Heat pipe wick structure wherein a stout sheet of perforated material overlays a high performance wick material such as stainless steel felt affixed to a substrate. The inventive structure provides a good flow path for working fluid while maintaining durability and structural stability independent of the structure (or lack of structure) associated with the wick material. In one described embodiment, a wick of randomly laid .about.8 micron thickness stainless steel fibers is sintered to a metal substrate and a perforated metal overlay.

Andraka, Charles E. (Albuquerque, NM); Adkins, Douglas R. (Albuquerque, NM); Moreno, James B. (Albuquerque, NM); Rawlinson, K. Scott (Albuquerque, NM); Showalter, Steven K. (Albuquerque, NM); Moss, Timothy A. (Albuquerque, NM)

2006-10-24T23:59:59.000Z

449

Structural Analysis of the Desert Peak-Brady Geothermal Fields...  

Open Energy Info (EERE)

northwestern Nevada. The fields lie within the Humboldt structural zone, a region of high heat flow characterized by east-northeast to north northeast- striking fault zones. The...

450

Residual Stresses for Structural Analysis and Fatigue Life Prediction...  

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

Stresses for Structural Analysis and Fatigue Life Prediction in Vehicle Components: Success stories from the High Temperature Materials Laboratory (HTML) User Program Residual...

451

Nanotechnology enterprise in the United States: structure and location.  

E-Print Network [OSTI]

??This thesis investigates the structure and location of the nanotechnology enterprise in the United States. Nanotechnology merits focus because of the high degree of innovative… (more)

Bhaskarabhatla, Ajay Sivaram

2006-01-01T23:59:59.000Z

452

New Crystal Structures Lift Fog around Protein Folding  

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

New Crystal Structures Lift Fog around Protein Folding Print Nature's proteins set a high bar for nanotechnology. Macromolecules forged from peptide chains of amino acids, these...

453

Nuclear Power Plant Concrete Structures  

SciTech Connect (OSTI)

A nuclear power plant (NPP) involves complex engineering structures that are significant items of the structures, systems and components (SSC) important to the safe and reliable operation of the NPP. Concrete is the commonly used civil engineering construction material in the nuclear industry because of a number of advantageous properties. The NPP concrete structures underwent a great degree of evolution, since the commissioning of first NPP in early 1960. The increasing concern with time related to safety of the public and environment, and degradation of concrete structures due to ageing related phenomena are the driving forces for such evolution. The concrete technology underwent rapid development with the advent of chemical admixtures of plasticizer/super plasticizer category as well as viscosity modifiers and mineral admixtures like fly ash and silica fume. Application of high performance concrete (HPC) developed with chemical and mineral admixtures has been witnessed in the construction of NPP structures. Along with the beneficial effect, the use of admixtures in concrete has posed a number of challenges as well in design and construction. This along with the prospect of continuing operation beyond design life, especially after 60 years, the impact of extreme natural events ( as in the case of Fukushima NPP accident) and human induced events (e.g. commercial aircraft crash like the event of September 11th 2001) has led to further development in the area of NPP concrete structures. The present paper aims at providing an account of evolution of NPP concrete structures in last two decades by summarizing the development in the areas of concrete technology, design methodology and construction techniques, maintenance and ageing management of concrete structures.

Basu, Prabir [International Atomic Energy Agency (IAEA)] [International Atomic Energy Agency (IAEA); Labbe, Pierre [Electricity of France (EDF)] [Electricity of France (EDF); Naus, Dan [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL)

2013-01-01T23:59:59.000Z

454

Collective network for computer structures  

DOE Patents [OSTI]

A system and method for enabling high-speed, low-latency global collective communications among interconnected processing nodes. The global collective network optimally enables collective reduction operations to be performed during parallel algorithm operations executing in a computer structure having a plurality of the interconnected processing nodes. Router devices ate included that interconnect the nodes of the network via links to facilitate performance of low-latency global processing operations at nodes of the virtual network and class structures. The global collective network may be configured to provide global barrier and interrupt functionality in asynchronous or synchronized manner. When implemented in a massively-parallel supercomputing structure, the global collective network is physically and logically partitionable according to needs of a processing algorithm.

Blumrich, Matthias A. (Ridgefield, CT); Coteus, Paul W. (Yorktown Heights, NY); Chen, Dong (Croton On Hudson, NY); Gara, Alan (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Hoenicke, Dirk (Ossining, NY); Takken, Todd E. (Brewster, NY); Steinmacher-Burow, Burkhard D. (Wernau, DE); Vranas, Pavlos M. (Bedford Hills, NY)

2011-08-16T23:59:59.000Z

455

Integrated structural control design of large space structures  

SciTech Connect (OSTI)

Active control of structures has been under intensive development for the last ten years. Reference 2 reviews much of the identification and control technology for structural control developed during this time. The technology was initially focused on space structure and weapon applications; however, recently the technology is also being directed toward applications in manufacturing and transportation. Much of this technology focused on multiple-input/multiple-output (MIMO) identification and control methodology because many of the applications require a coordinated control involving multiple disturbances and control objectives where multiple actuators and sensors are necessary for high performance. There have been many optimal robust control methods developed for the design of MIMO robust control laws; however, there appears to be a significant gap between the theoretical development and experimental evaluation of control and identification methods to address structural control applications. Many methods have been developed for MIMO identification and control of structures, such as the Eigensystem Realization Algorithm (ERA), Q-Markov Covariance Equivalent Realization (Q-Markov COVER) for identification; and, Linear Quadratic Gaussian (LQG), Frequency Weighted LQG and H-/ii-synthesis methods for control. Upon implementation, many of the identification and control methods have shown limitations such as the excitation of unmodelled dynamics and sensitivity to system parameter variations. As a result, research on methods which address these problems have been conducted.

Allen, J.J.; Lauffer, J.P.

1995-01-01T23:59:59.000Z

456

Earth Structure Introduction  

E-Print Network [OSTI]

Earth Structure Introduction Earth Structure (2nd Edition), 2004 W.W. Norton & Co, New York Slide show by Ben van der Pluijm © WW Norton, unless noted otherwise #12;© EarthStructure (2nd ed) 210/4/2010 Aerial views #12;© EarthStructure (2nd ed) 310/4/2010 http://www.globalchange.umich.edu/Ben/ES/ #12

457

FRP-to-concrete bond behaviour under high strain rates   

E-Print Network [OSTI]

Fibre reinforced polymer (FRP) composites have been used for strengthening concrete structures since early 1990s. More recently, FRP has been used for retrofitting concrete structures for high energy events such as impact ...

Li, Xiaoqin

2012-06-25T23:59:59.000Z

458

Lithographically defined microporous carbon structures  

DOE Patents [OSTI]

A lithographic method is used to fabricate porous carbon structures that can provide electrochemical electrodes having high surface area with uniform and controllable dimensions, providing enormous flexibility to tailor the electrodes toward specific applications. Metal nanoparticles deposited on the surface of the porous carbon electrodes exhibit ultra small dimensions with uniform size distribution. The resulting electrodes are rugged, electrically conductive and show excellent electrochemical behavior.

Burckel, David Bruce; Washburn, Cody M.; Polsky, Ronen; Brozik, Susan M.; Wheeler, David R.

2013-01-08T23:59:59.000Z

459

Computational optimization of synthetic water channels.  

SciTech Connect (OSTI)

Membranes for liquid and gas separations and ion transport are critical to water purification, osmotic energy generation, fuel cells, batteries, supercapacitors, and catalysis. Often these membranes lack pore uniformity and robustness under operating conditions, which can lead to a decrease in performance. The lack of uniformity means that many pores are non-functional. Traditional membranes overcome these limitations by using thick membrane materials that impede transport and selectivity, which results in decreased performance and increased operating costs. For example, limitations in membrane performance demand high applied pressures to deionize water using reverse osmosis. In contrast, cellular membranes combine high flux and selective transport using membrane-bound protein channels operating at small pressure differences. Pore size and chemistry in the cellular channels is defined uniformly and with sub-nanometer precision through protein folding. The thickness of these cellular membranes is limited to that of the cellular membrane bilayer, about 4 nm thick, which enhances transport. Pores in the cellular membranes are robust under operating conditions in the body. Recent efforts to mimic cellular water channels for efficient water deionization produced a significant advance in membrane function. The novel biomimetic design achieved a 10-fold increase in membrane permeability to water flow compared to commercial membranes and still maintained high salt rejection. Despite this success, there is a lack of understanding about why this membrane performs so well. To address this lack of knowledge, we used highperformance computing to interrogate the structural and chemical environments experienced by water and electrolytes in the newly created biomimetic membranes. We also compared the solvation environments between the biomimetic membrane and cellular water channels. These results will help inform future efforts to optimize and tune the performance of synthetic biomimetic membranes for applications in water purification, energy, and catalysis.

Rogers, David Michael; Rempe, Susan L. B.

2012-12-01T23:59:59.000Z

460

Structural and economic analysis of capesize bulk carriers  

E-Print Network [OSTI]

Structural failures of bulk carriers continue to account for the loss of many lives every year. Capes are particularly vulnerable to cracking because of their large length, their trade in high density cargos, and the high ...

Hadjiyiannis, Nicholas

2010-01-01T23:59:59.000Z

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


461

DEVELOPMENT OFA WIRELESS ACTIVE SYSTEM FOR TPS STRUCTURAL HEALTH MONITORING  

E-Print Network [OSTI]

TPS damage. Several essential aspects are being studied: (a) development of high temperature aspects are being studied: (a) development of high temperature piezoelectric wafer active sensor (HTDEVELOPMENT OFA WIRELESS ACTIVE SYSTEM FOR TPS STRUCTURAL HEALTH MONITORING Victor Giurgiutiu1

Giurgiutiu, Victor

462

Robust nite-di erence modelling of complex structures1  

E-Print Network [OSTI]

with the 1Proc. of HIGH PERFORMANCE COMPUTING IN SEISMIC MODELLING, An International Sympo- sium, Zaragoza-difference modelling of complex structures Paper No. 15 in Proc. of Int. Symposium on High Performance Computing

Oprsal, Ivo

463

High elastic modulus polymer electrolytes  

DOE Patents [OSTI]

A polymer that combines high ionic conductivity with the structural properties required for Li electrode stability is useful as a solid phase electrolyte for high energy density, high cycle life batteries that do not suffer from failures due to side reactions and dendrite growth on the Li electrodes, and other potential applications. The polymer electrolyte includes a linear block copolymer having a conductive linear polymer block with a molecular weight of at least 5000 Daltons, a structural linear polymer block with an elastic modulus in excess of 1.times.10.sup.7 Pa and an ionic conductivity of at least 1.times.10.sup.-5 Scm.sup.-1. The electrolyte is made under dry conditions to achieve the noted characteristics.

Balsara, Nitash Pervez; Singh, Mohit; Eitouni, Hany Basam; Gomez, Enrique Daniel

2013-10-22T23:59:59.000Z

464

Design/installation and structural integrity assessment under the Federal Facility Agreement for Bethel Valley Low-Level Waste Collection and Transfer System upgrade for Building 2026 (High Radiation Level Analytical Laboratory) and Building 2099 (Monitoring and Control Station) at Oak Ridge National Laboratory  

SciTech Connect (OSTI)

This document presents a Design/Installation and Structural Integrity Assessment for a replacement tank system for portions of the Bethel Valley Low Level Waste (LLW) System, located at the Oak Ridge Reservation, Oak Ridge, Tennessee. This issue of the assessment covers the design aspects of the replacement tank system, and certifies that the design has sufficient structural integrity and is acceptable for the storing or treating of hazardous and/or radioactive substances. The present issue identifies specific activities that must be completed during the fabrication, installation, and testing of the replacement tank system in order to provide assurance that the final installation complies with governing requirements. Portions of the LLW system are several decades old, or older, and do not comply with current environmental protection regulations. Several subsystems of the LLW system have been designated to receive a state-of-the-art replacement and refurbishment. One such subsystem serves Building 2026, the High Radiation Level Analytical Laboratory. This assessment focuses on the scope of work for the Building 2026 replacement LLW Collection and Transfer System, including the provision of a new Monitoring and Control Station (Building 2099) to receive, store, and treat (adjust pH) low level radioactive waste.

Not Available

1994-10-01T23:59:59.000Z

465

Dielectric Elastomers for Actuation and Energy Harvesting  

E-Print Network [OSTI]

and their application for biomimetic robots. Proceedings oftheir application for biomimetic walking robots. Proceedingstheir application for biomimetic walking robots. Synthetic

Brochu, Paul

2012-01-01T23:59:59.000Z

466

STEEL STRUCTURES FOR BUILDING IN CHINA PROF. HE MINGXUAN  

E-Print Network [OSTI]

STEEL STRUCTURES FOR BUILDING IN CHINA PROF. HE MINGXUAN VICE-PRESIDENT OF CHINA STEEL CONSTRUCTION SOCIETY CHIEF ENGINEER OF BAOSTEEL CONSTRUCTION CO., LTD JULY 6, 2012 LONDON #12;1. STEEL AND STEEL STRUCTURES IN CHINA 2. SOME PROJECTS OF STEEL STRUCTURES FOR HIGH- RISE BUILDINGS IN CHINA #12;STEEL

Cambridge, University of

467

Optimization of Structural Dynamic Behaviour Based on Effective Modal Parameters  

E-Print Network [OSTI]

Optimization of Structural Dynamic Behaviour Based on Effective Modal Parameters S. Besset, L. J Optimization of complex structures often leads to high calculation costs. In- deed, the structure has to be frequently reanalysed in order to update the opti- mization criteriums. We propose an optimization method

Paris-Sud XI, Université de

468

Development of Test Methods for Evaluation of Bending Stiffness and Compressive Modulus of Braided Composite Lattice Structures .  

E-Print Network [OSTI]

??Open Architecture Composite Structures (O-ACS) have been recently developed and are known for their high modulus per unit weight. They are truss structures preformed on… (more)

Shirgaonkar, Sanyam

2015-01-01T23:59:59.000Z

469

Composite electrode/electrolyte structure  

DOE Patents [OSTI]

Provided is an electrode fabricated from highly electronically conductive materials such as metals, metal alloys, or electronically conductive ceramics. The electronic conductivity of the electrode substrate is maximized. Onto this electrode in the green state, a green ionic (e.g., electrolyte) film is deposited and the assembly is co-fired at a temperature suitable to fully densify the film while the substrate retains porosity. Subsequently, a catalytic material is added to the electrode structure by infiltration of a metal salt and subsequent low temperature firing. The invention allows for an electrode with high electronic conductivity and sufficient catalytic activity to achieve high power density in ionic (electrochemical) devices such as fuel cells and electrolytic gas separation systems.

Visco, Steven J. (Berkeley, CA); Jacobson, Craig P. (El Cerrito, CA); DeJonghe, Lutgard C. (Lafayette, CA)

2004-01-27T23:59:59.000Z

470

BEHAVIOR OF CONCRETE BRIDGE DECKS REINFORCED WITH HIGH-STRENGTH AND HIGH CORROSION-RESISTANT STEEL  

E-Print Network [OSTI]

BEHAVIOR OF CONCRETE BRIDGE DECKS REINFORCED WITH HIGH- STRENGTH AND HIGH CORROSION-RESISTANT STEEL, high corrosion-resistant steel commercially known as Micro-composite Multi-structural Formable (MMFX) steel. The study included testing three full-scale bridge decks having a span-to-depth ratio of 12

471

Structuring beyond architecture  

E-Print Network [OSTI]

This thesis explores the layering and negotiation of structural devices in urban settings. Its point of departure is a series of patterns of how structural design and urban design interact and overlap, from which are ...

Foxe, David M

2006-01-01T23:59:59.000Z

472

Structures and fabrication techniques for solid state electrochemical devices  

DOE Patents [OSTI]

Porous substrates and associated structures for solid-state electrochemical devices, such as solid-oxide fuel cells (SOFCs), are low-cost, mechanically strong and highly electronically conductive. Some preferred structures have a thin layer of an electrocatalytically active material (e.g., Ni--YSZ) coating a porous high-strength alloy support (e.g., SS-430) to form a porous SOFC fuel electrode. Electrode/electrolyte structures can be formed by co-firing or constrained sintering processes.

Visco, Steven J.; Jacobson, Craig P.; DeJonghe, Lutgard C.

2012-10-09T23:59:59.000Z

473

Structures and fabrication techniques for solid state electrochemical devices  

DOE Patents [OSTI]

Porous substrates and associated structures for solid-state electrochemical devices, such as solid-oxide fuel cells (SOFCs), are low-cost, mechanically strong and highly electronically conductive. Some preferred structures have a thin layer of an electrocatalytically active material (e.g., Ni--YSZ) coating a porous high-strength alloy support (e.g., SS-430) to form a porous SOFC fuel electrode. Electrode/electrolyte structures can be formed by co-firing or constrained sintering processes.

Visco, Steven J. (Berkeley, CA); Jacobson, Craig P. (El Cerrito, CA); DeJonghe, Lutgard C. (Lafayette, CA)

2008-04-01T23:59:59.000Z

474

Changing the Structure Boundary Geometry  

SciTech Connect (OSTI)

Analysis of previously obtained results shows that hexagonal crystal lattice is the dominant type of ordering, in particular, in striated glow discharges. We explore the possibility for changing the dust distribution in horizontal cross sections of relatively highly ordered structures in a glow-discharge. Presuming that boundary geometry can affect dust distribution, we used cylindrical coolers held at 0 deg. C and placed against a striation containing a structure, to change the geometry of its outer boundary. By varying the number of coolers, their positions, and their separations from the tube wall, azimuthally asymmetric thermophoretic forces can be used to form polygonal boundaries and vary the angles between their segments (in a horizontal cross section). The corner in the structure's boundary of 60 deg. stimulates formation of hexagonal cells. The structure between the supported parallel boundaries is also characterized by stable hexagonal ordering. We found that a single linear boundary segment does not give rise to any sizable domain, but generates a lattice extending from the boundary (without edge defects). A square lattice can be formed by setting the angle equal to 90 deg. . However, angles of 45 deg. and 135 deg. turned out easier to form. Square lattice was created by forming a near-135 deg. corner with four coolers. It was noted that no grain ordering is observed in the region adjacent to corners of angles smaller than 30 deg. , which do not promote ordering into cells of any shape. Thus, manipulation of a structure boundary can be used to change dust distribution, create structures free of the ubiquitous edge defects that destroy orientation order, and probably change the crystal lattice type.

Karasev, Viktor; Dzlieva, Elena; Ivanov, Artyom [St.-Petersburg State University, Physics Faculty, Ulianovskaya 1, Peterhof, St. Petersburg, 198504 (Russian Federation)

2008-09-07T23:59:59.000Z

475

High energy storage capacitor by embedding tunneling nano-structures  

DOE Patents [OSTI]

In an All-Electron Battery (AEB), inclusions embedded in an active region between two electrodes of a capacitor provide enhanced energy storage. Electrons can tunnel to/from and/or between the inclusions, thereby increasing the charge storage density relative to a conventional capacitor. One or more barrier layers is present in an AEB to block DC current flow through the device. The AEB effect can be enhanced by using multi-layer active regions having inclusion layers with the inclusions separated by spacer layers that don't have the inclusions. The use of cylindrical geometry or wrap around electrodes and/or barrier layers in a planar geometry can enhance the basic AEB effect. Other physical effects that can be employed in connection with the AEB effect are excited state energy storage, and formation of a Bose-Einstein condensate (BEC).

Holme, Timothy P; Prinz, Friedrich B; Van Stockum, Philip B

2014-11-04T23:59:59.000Z

476

Development of High-Capacity Cathode Materials with Integrated Structures  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

477

Identification of high angle structures controlling the geothermal...  

Open Energy Info (EERE)

completion of the most recent well can be attributed to the incorporation of the geology of previous wells with additional geology and geophysics. Temperature gradient...

478

Moisture and Structural Analysis for High Performance Hybrid Wall Assemblies  

SciTech Connect (OSTI)

This report describes the work conducted by the Building Science Corporation (BSC) Building America Research Team's 'Energy Efficient Housing Research Partnerships' project. Based on past experience in the Building America program, they have found that combinations of materials and approaches---in other words, systems--usually provide optimum performance. No single manufacturer typically provides all of the components for an assembly, nor has the specific understanding of all the individual components necessary for optimum performance.

Grin, A.; Lstiburek, J.

2012-09-01T23:59:59.000Z

479

Impact of Electric Industry Structure on High Wind Penetration Potential  

SciTech Connect (OSTI)

This paper attempts to evaluate which balancing area (BA) characteristics best accommodate wind energy.

Milligan, M.; Kirby, B.; Gramlich, R.; Goggin, M.

2009-07-01T23:59:59.000Z

480

Probing the proton structure in high-energy ep collisions  

E-Print Network [OSTI]

depleted uranium calorimeter · 6000 cells · EM: · Systematic 1-2% · HAD: · Systematic 1% EE E %18)( =s EE E

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


481

Spectroscopy and high-spin structure of {sup 209}Fr  

SciTech Connect (OSTI)

Excited states in {sup 209}Fr have been studied using the {sup 197}Au({sup 16}O,4n){sup 209}Fr reaction with pulsed beams and {gamma}-ray and electron spectroscopy. A comprehensive scheme has been established up to an excitation energy of about 6 MeV and spins of about 49/2({Dirac_h}/2{pi}). Several isomers have been identified including a J{sup {pi}}=25/2{sup +}, {tau}=48(3) ns state at 2130 keV and a 606(26) ns, 45/2{sup -} state at 4660 keV. The latter state decays via an enhanced E3 transition with a strength of 28.8(12) W.u. It can be identified with a similar isomer in the heavier odd isotopes {sup 211}Fr and {sup 213}Fr, arising from the maximal coupling of the five valence protons in the {pi}h{sub 9/2}{sup 3}i{sub 13/2}{sup 2} configuration. The systematics of the yrast states in the odd-A isotopes are discussed, including the presence of states arising from the main proton configurations coupled to the p{sub 1/2}, f{sub 5/2}, and i{sub 13/2} neutron holes. Shell-model configurations are assigned to many of the observed states. The isotopic assignment differs from earlier work, which is shown to be erroneous.

Dracoulis, G. D.; Davidson, P. M.; Lane, G. J.; Kibedi, T.; Nieminen, P.; Watanabe, H. [Department of Nuclear Physics, R. S. Phys. S. E., Australian National University, Canberra, A. C. T. Australia 0200 (Australia); Byrne, A. P. [Department of Physics, The Faculties, Australian National University, Canberra, A. C. T. Australia 0200 (Australia); Department of Nuclear Physics, R. S. Phys. S. E., Australian National University, Canberra, A. C. T. Australia 0200 (Australia); Wilson, A. N. [Department of Nuclear Physics, R. S. Phys. S. E., Australian National University, Canberra, A. C. T. Australia 0200 (Australia); Department of Physics, The Faculties, Australian National University, Canberra, A. C. T. Australia 0200 (Australia)

2009-05-15T23:59:59.000Z

482

Correlation Between Structure and Thermoelectric Properties of Bulk High  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate EarthEnergyDistrict EnergyCensus,Core5into PARS

483

Catalyst Structure-Performance Relationship Identified by High-Throughput  

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

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

484

Synthesis, Structure, and Metalation of Two New Highly Porous Zirconium  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduled System Burst BufferFluorite Topology |Metal-Organic

485

High Precision Geophysics & Detailed Structural Exploration & Slim Well  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:GreerHi Gtel Jump to: navigation,Solar Power Plant JumpDrilling

486

High Aspect Ratio Metallic Structures for Use as Transparent Electrodes -  

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

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487

Robust, High-Throughput Analysis of Protein Structures  

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

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