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1

The Structure of the Local Interstellar Medium IV: Dynamics, Morphology, Physical Properties, and Implications of Cloud-Cloud Interactions  

E-Print Network [OSTI]

We present an empirical dynamical model of the local interstellar medium based on 270 radial-velocity measurements for 157 sight lines toward nearby stars. Physical-parameter measurements (i.e., temperature, turbulent velocity, depletions) are available for 90 components, or one-third of the sample, enabling initial characterizations of the physical properties of LISM clouds. The model includes 15 warm clouds located within 15 pc of the Sun, each with a different velocity vector. We derive projected morphologies of all clouds and estimate the volume filling factor of warm partially ionized material in the LISM to be between ~5.5% and 19%. Relative velocities of potentially interacting clouds are often supersonic, consistent with heating, turbulent, and metal-depletion properties. Cloud-cloud collisions may be responsible for the filamentary morphologies found in ~1/3 of LISM clouds, the distribution of clouds along the boundaries of the two nearest clouds (LIC and G), the detailed shape and heating of the Mic Cloud, the location of nearby radio scintillation screens, and the location of a LISM cold cloud. Contrary to previous claims, the Sun appears to be located in the transition zone between the LIC and G Clouds.

Seth Redfield; Jeffrey L. Linsky

2007-09-27T23:59:59.000Z

2

Physical Morphology of Galaxies using Asymmetry  

E-Print Network [OSTI]

We demonstrate in this paper the use of asymmetry in conjunction with the integrated (B-V) color of galaxies for physical morphological purposes. We show how color-asymmetry diagrams can be used to distinguish between various types of galaxies, including ellipticals, late and early type disks, irregulars and interacting/merging galaxies. We also show how asymmetry can be used to help decipher the morphology of nearby starbursts, and galaxies in the Hubble Deep Field.

Christopher J. Conselice

1999-10-06T23:59:59.000Z

3

Structure, Morphology, and Optical Properties of Amorphous and...  

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

Morphology, and Optical Properties of Amorphous and Nanocrystalline Gallium Oxide Thin Films. Structure, Morphology, and Optical Properties of Amorphous and Nanocrystalline Gallium...

4

Morphology of Gas Release in Physical Simulants  

SciTech Connect (OSTI)

This report documents testing activities conducted as part of the Deep Sludge Gas Release Event Project (DSGREP). The testing described in this report focused on evaluating the potential retention and release mechanisms of hydrogen bubbles in underground radioactive waste storage tanks at Hanford. The goal of the testing was to evaluate the rate, extent, and morphology of gas release events in simulant materials. Previous, undocumented scoping tests have evidenced dramatically different gas release behavior from simulants with similar physical properties. Specifically, previous gas release tests have evaluated the extent of release of 30 Pa kaolin and 30 Pa bentonite clay slurries. While both materials are clays and both have equivalent material shear strength using a shear vane, it was found that upon stirring, gas was released immediately and completely from bentonite clay slurry while little if any gas was released from the kaolin slurry. The motivation for the current work is to replicate these tests in a controlled quality test environment and to evaluate the release behavior for another simulant used in DSGREP testing. Three simulant materials were evaluated: 1) a 30 Pa kaolin clay slurry, 2) a 30 Pa bentonite clay slurry, and 3) Rayleigh-Taylor (RT) Simulant (a simulant designed to support DSGREP RT instability testing. Entrained gas was generated in these simulant materials using two methods: 1) application of vacuum over about a 1-minute period to nucleate dissolved gas within the simulant and 2) addition of hydrogen peroxide to generate gas by peroxide decomposition in the simulants over about a 16-hour period. Bubble release was effected by vibrating the test material using an external vibrating table. When testing with hydrogen peroxide, gas release was also accomplished by stirring of the simulant.

Daniel, Richard C.; Burns, Carolyn A.; Crawford, Amanda D.; Hylden, Laura R.; Bryan, Samuel A.; MacFarlan, Paul J.; Gauglitz, Phillip A.

2014-07-03T23:59:59.000Z

5

Multigraft Copolymer Superelastomers: Synthesis Morphology, and Properties  

SciTech Connect (OSTI)

The synthesis of well-defined multigraft copolymers having a polydiene backbone with polystyrene side chains is briefly reviewed, with particular focus on controlling branch point spacing and branch point functionality. Use of living anionic polymerization and chlorosilane linking chemistry has led to the synthesis of series of materials having regularly spaced trifunctional (comb), tetrafunctional (centipede), and hexafunctional (barbwire) branch points. The morphologies of these materials were characterized by transmission electron microscopy and small-angle X-ray scattering, and it was found that the morphologies were controlled by the local architectural asymmetry associated with each branch point. Mechanical properties studies revealed that such multigraft copolymers represent a new class of thermoplastic elastomers (TPEs) with superior elongation at break and low residual strains as compared to conventional TPEs.

Uhrig, David [ORNL; Schlegel, Ralf [Fraunhofer IWM, Freiburg, German; Weidisch, Roland [Polymer Research Institute, Dresden Germany; Mays, Jimmy [ORNL

2011-01-01T23:59:59.000Z

6

Physical Properties of Gas Hydrates: A Review  

SciTech Connect (OSTI)

Methane gas hydrates in sediments have been studied by several investigators as a possible future energy resource. Recent hydrate reserves have been estimated at approximately 1016?m3 of methane gas worldwide at standard temperature and pressure conditions. In situ dissociation of natural gas hydrate is necessary in order to commercially exploit the resource from the natural-gas-hydrate-bearing sediment. The presence of gas hydrates in sediments dramatically alters some of the normal physical properties of the sediment. These changes can be detected by field measurements and by down-hole logs. An understanding of the physical properties of hydrate-bearing sediments is necessary for interpretation of geophysical data collected in field settings, borehole, and slope stability analyses; reservoir simulation; and production models. This work reviews information available in literature related to the physical properties of sediments containing gas hydrates. A brief review of the physical properties of bulk gas hydrates is included. Detection methods, morphology, and relevant physical properties of gas-hydrate-bearing sediments are also discussed.

Gabitto, Jorge [Prairie View A& M University; Tsouris, Costas [ORNL

2010-01-01T23:59:59.000Z

7

Correlations Between Optical, Chemical and Physical Properties...  

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

Correlations Between Optical, Chemical and Physical Properties of Biomass Burn Aerosols. Correlations Between Optical, Chemical and Physical Properties of Biomass Burn Aerosols....

8

E:FoodEngineering&PhysicalProperties JFS E: Food Engineering and Physical Properties  

E-Print Network [OSTI]

E:FoodEngineering&PhysicalProperties JFS E: Food Engineering and Physical Properties Classification in the type of starch modification were mainly related to the following properties: permeability, solubility years, both in terms of materials and processes. The use of plastic materials in food packaging

Ferreira, Márcia M. C.

9

Optical, physical, and chemical properties of springtime aerosol...  

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

Optical, physical, and chemical properties of springtime aerosol over Barrow Alaska in 2008. Optical, physical, and chemical properties of springtime aerosol over Barrow Alaska in...

10

Physical Properties of Hanford Transuranic Waste  

SciTech Connect (OSTI)

The research described herein was undertaken to provide needed physical property descriptions of the Hanford transuranic tank sludges under conditions that might exist during retrieval, treatment, packaging and transportation for disposal. The work addressed the development of a fundamental understanding of the types of systems represented by these sludge suspensions through correlation of the macroscopic rheological properties with particle interactions occurring at the colloidal scale in the various liquid media. The results of the work have advanced existing understanding of the sedimentation and aggregation properties of complex colloidal suspensions. Bench scale models were investigated with respect to their structural, colloidal and rheological properties that should be useful for the development and optimization of techniques to process the wastes at various DOE sites.

Berg, John C.

2010-03-25T23:59:59.000Z

11

Hanford Waste Physical and Rheological Properties: Data and Gaps  

SciTech Connect (OSTI)

The retrieval, transport, treatment and disposal operations associated with Hanford Tank Wastes involve the handling of a wide range of slurries. Knowledge of the physical and rheological properties of the waste is a key component to the success of the design and implementation of the waste processing facilities. Previous efforts to compile and analyze the physical and rheological properties were updated with new results including information on solids composition and density, particle size distributions, slurry rheology, and particle settling behavior. The primary source of additional data is from a recent series of tests sponsored by the Hanford Waste Treatment and Immobilization Plant. These tests involved an extensive suite of characterization and bench-scale process testing of 8 waste groups representing approximately 75% of the high-level waste mass expected to be processed through the WTP. Additional information on the morphology of the waste solids was also included. Based on the updated results, a gap analysis to identify gaps in characterization data, analytical methods and data interpretation was completed.

Kurath, Dean E.; Wells, Beric E.; Huckaby, James L.; Mahoney, Lenna A.; Daniel, Richard C.; Burns, Carolyn A.; Tingey, Joel M.; Cooley, Scott K.

2012-03-01T23:59:59.000Z

12

Hanford Waste Physical and Rheological Properties: Data and Gaps - 12078  

SciTech Connect (OSTI)

The retrieval, transport, treatment and disposal operations associated with Hanford Tank Wastes involve the handling of a wide range of slurries. Knowledge of the physical and rheological properties of the waste is a key component to the success of the design and implementation of the waste processing facilities. Previous efforts to compile and analyze the physical and rheological properties were updated with new results including information on solids composition and density, particle size distributions, slurry rheology, and particle settling behavior. The primary source of additional data is from a recent series of tests sponsored by the Hanford Waste Treatment and Immobilization Plant (WTP). These tests involved an extensive suite of characterization and bench-scale process testing of 8 waste groups representing approximately 75% of the high-level waste mass expected to be processed through the WTP. Additional information on the morphology of the waste solids was also included. Based on the updated results, a gap analysis to identify gaps in characterization data, analytical methods and data interpretation was completed. (authors)

Kurath, D.E.; Wells, B.E.; Huckaby, J.L.; Mahoney, L.A.; Daniel, R.C.; Burns, C.A.; Tingey, J.M.; Cooley, S.K. [Pacific Northwest National Laboratory PO Box 999, Richland WA 99352 (United States)

2012-07-01T23:59:59.000Z

13

Structure, Morphology, and Optical Properties of Amorphous and  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystalline Gallium Oxide Thin Films. | EMSL Morphology, and Optical

14

The physical properties of microcellular composite foams  

SciTech Connect (OSTI)

Recently we reported on a method of preparing microcellular composite foams. In this procedure an open-celled polystyrene foam is prepared by the polymerization of a high-internal-phase water-in-oil emulsion containing styrene, divinylbenzene, surfactant, free-radial initiator and water. After drying, the cells of the polystyrene foam are then filled with other materials such as aerogel or resoles. The physical properties of these materials, e.g., surface area, density, thermal conductivity, and compressive strength will be presented. 10 refs., 1 fig., 3 tabs.

Nyitray, A.M.; Williams, J.M.; Onn, D.; Witek, A. (Los Alamos National Lab., NM (USA); Delaware Univ., Newark, DE (USA). Applied Thermal Physics Lab.)

1989-01-01T23:59:59.000Z

15

Morphology and properties of recycled polypropylene/bamboo fibers composites  

SciTech Connect (OSTI)

Polypropylene (PP) is among the most widely used thermoplastics in many industrial fields. However, like other recycled polymers, its properties usually decrease after recycling process and sometimes are degraded to poor properties level for direct re-employment. The recycled products, in general, need to be reinforced to have competitive properties. Short bamboo fibers (BF) have been added in a recycled PP (RPP) with and without compatibilizer type maleic anhydride polypropylene (MAPP). Several properties of composite materials, such as helium gas permeability and mechanical properties before and after ageing in water, were examined. The effects of bamboo fiber content and fiber chemical treatment have been also investigated. We showed that the helium permeability increases if fiber content is higher than 30% because of a poor adhesion between untreated bamboo fiber and polymer matrix. The composites reinforced by acetylated bamboo fibers show better helium permeability due to grafting of acetyl groups onto cellulose fibers surface and thus improves compatibility between bamboo fibers and matrix, which has been shown by microscopic observations. Besides, mechanical properties of composite decrease with ageing in water but the effect is less pronounced with low bamboo fiber content.

Phuong, Nguyen Tri; Guinault, Alain; Sollogoub, Cyrille [Laboratoire des Materiaux Industriels Polymeres, CNAM, Paris (France); Chuong, Bui [Polymer Center, Hanoi University of Technology (Viet Nam)

2011-05-04T23:59:59.000Z

16

HYDRAULIC AND PHYSICAL PROPERTIES OF MCU SALTSTONE  

SciTech Connect (OSTI)

The Saltstone Disposal Facility (SDF), located in the Z-Area of the Savannah River Site (SRS), is used for the disposal of low-level radioactive salt solution. The SDF currently contains two vaults: Vault 1 (6 cells) and Vault 4 (12 cells). Additional disposal cells are currently in the design phase. The individual cells of the saltstone facility are filled with saltstone., Saltstone is produced by mixing the low-level radioactive salt solution, with blast furnace slag, fly ash, and cement or lime to form a dense, micro-porous, monolithic, low-level radioactive waste form. The saltstone is pumped into the disposal cells where it subsequently solidifies. Significant effort has been undertaken to accurately model the movement of water and contaminants through the facility. Key to this effort is an accurate understanding of the hydraulic and physical properties of the solidified saltstone. To date, limited testing has been conducted to characterize the saltstone. The primary focus of this task was to estimate the hydraulic and physical properties of MCU (Modular Caustic Side Solvent Extraction Unit) saltstone relative to two permeating fluids. These fluids included simulated groundwater equilibrated with vault concrete and simulated saltstone pore fluid. Samples of the MCU saltstone were prepared by the Savannah River National Laboratory (SRNL) and allowed to cure for twenty eight days prior to testing. These samples included two three-inch diameter by six inch long mold samples and three one-inch diameter by twelve inch long mold samples.

Dixon, K; Mark Phifer, M

2008-03-19T23:59:59.000Z

17

Physical properties and surface/interface analysis of nanocrystalline...  

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

and surfaceinterface analysis of nanocrystalline WO3 films grown under variable oxygen gas flow rates. Physical properties and surfaceinterface analysis of nanocrystalline...

18

Electronic properties and morphology of Cu-phthalocyanine—C{sub 60} composite mixtures  

SciTech Connect (OSTI)

Phthalocyanines in combination with C{sub 60} are benchmark materials for organic solar cells. Here, we have studied the morphology and electronic properties of co-deposited mixtures (blends) of these materials forming a bulk heterojunction as a function of the concentration of the two constituents. For a concentration of 1:1 of Cu-Phthalocyanine (CuPc):C{sub 60}, a phase separation into about 100?nm size domains is observed, which results in electronic properties similar to layered systems. For low C{sub 60} concentrations (10:1 CuPc:C{sub 60}), the morphology, as indicated by Low-Energy Electron Microscopy images, suggests a growth mode characterized by (amorphous) domains of CuPC, whereby the domain boundaries are decorated with C{sub 60}. Despite of these markedly different growth modes, the electronic properties of the heterojunction films are essentially unchanged.

Roth, Friedrich [Center for Free-Electron Laser Science/DESY, Notkestraße 85, D-22607 Hamburg (Germany); Lupulescu, Cosmin [Institute of Optics and Atomic Physics, TU Berlin, Straße des 17. Juni 135, D-10623 Berlin (Germany); Arion, Tiberiu [Center for Free-Electron Laser Science/DESY, Notkestraße 85, D-22607 Hamburg (Germany); Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, D-22761 Hamburg (Germany); Darlatt, Erik; Gottwald, Alexander [Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2-12, D-10587 Berlin (Germany); Eberhardt, Wolfgang [Center for Free-Electron Laser Science/DESY, Notkestraße 85, D-22607 Hamburg (Germany); Institute of Optics and Atomic Physics, TU Berlin, Straße des 17. Juni 135, D-10623 Berlin (Germany)

2014-01-21T23:59:59.000Z

19

InGaN: Direct correlation of nanoscopic morphology features with optical and structural properties  

SciTech Connect (OSTI)

A comprehensive study on the impact of growth modes on the structural and optical properties of thick InGaN layers suitable for photovoltaic application is presented. Samples grown by metalorganic vapour phase epitaxy with different growth rates and thicknesses have been analyzed. The application of slow growth rates result in smooth layers while higher growth rates induce a meandering surface morphology. Using low-temperature cathodoluminescence, a direct correlation of the morphology to local luminescent properties is obtained: the top of meandering structures reveals a spectrally red-shifted emission compared to the emission wavelength expected from the average indium content determined by X-ray diffraction. The origin of this shift is identified and explained by increased indium incorporation on top of the meander due to a spatially localized compositional pulling effect.

Koch, Holger, E-mail: holger.koch@osram-os.com [OSRAM Opto Semiconductors GmbH, Leibnizstr. 4, 93055 Regensburg (Germany); GaN Device Technology, RWTH Aachen University, Sommerfeldstraße 24, 52074 Aachen (Germany); Bertram, Frank; August, Olga; Christen, Jürgen [Institute of Experimental Physics, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, 39106 Magdeburg (Germany); Pietzonka, Ines; Ahl, Jan-Philipp; Strassburg, Martin; Lugauer, Hans-Jürgen [OSRAM Opto Semiconductors GmbH, Leibnizstr. 4, 93055 Regensburg (Germany); Kalisch, Holger; Vescan, Andrei [GaN Device Technology, RWTH Aachen University, Sommerfeldstraße 24, 52074 Aachen (Germany)

2014-08-18T23:59:59.000Z

20

The effects of cerium doping on the size, morphology, and optical properties of ?-hematite nanoparticles for ultraviolet filtration  

SciTech Connect (OSTI)

Highlights: • Possible application of cerium-doped ?-hematite as ultraviolet filter. • Nanoparticles obtained through co-precipitation technique using various cerium doping levels followed by annealing. • Comprehensive materials characterisation utilizing XRD, DSC/TGA, STEM, UV–vis spectroscopy. • Increasing cerium content reduces particle sizing and alters morphology. • Solubility of cerium in hematite seen between 5 and 10% doping, 10% cerium doping greatly enhances attenuation in ultraviolet region and increases optical bandgap. - Abstract: Metal oxide nanoparticles have potential use in energy storage, electrode materials, as catalysts and in the emerging field of nanomedicine. Being able to accurately tailor the desirable properties of these nanoceramic materials, such as particle size, morphology and optical bandgap (E{sub g}) is integral in the feasibility of their use. In this study we investigate the altering of both the structure and physical properties through the doping of hematite (?-Fe{sub 2}O{sub 3}) nanocrystals with cerium at a range of concentrations, synthesised using a one-pot co-precipitation method. This extremely simple synthesis followed by thermal treatment results in stable Fe{sub 2?x}Ce{sub x}O{sub y} nanoceramics resulting from the burning of any unreacted precursors and transformation of goethite-cerium doped nanoparticle intermediate. The inclusion of Ce into the crystal lattice of these ?-Fe{sub 2}O{sub 3} nanoparticles causes a significantly large reduction in mean crystalline size and alteration in particle morphology with increasing cerium content. Finally we report an increase optical semiconductor bandgap, along with a substantial increase in the ultraviolet attenuation found for a 10% Ce-doping concentration which shows the potential application of cerium-doped hematite nanocrystals to be used as a pigmented ultraviolet filter for cosmetic products.

Cardillo, Dean [Institute for Superconducting and Electronic Materials, AIIM Facility, University of Wollongong Innovation Campus, Squires Way, North Wollongong, NSW 2500 (Australia); Konstantinov, Konstantin, E-mail: konstan@uow.edu.au [Institute for Superconducting and Electronic Materials, AIIM Facility, University of Wollongong Innovation Campus, Squires Way, North Wollongong, NSW 2500 (Australia); Devers, Thierry [Centre de Recherche sur la Matière Divisée, Institut de Physique, site de Chartres, Université d’Orléans (France)

2013-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Investigating physical properties of novel carbon-based materials  

E-Print Network [OSTI]

In this thesis, we present the results of studies of physical properties in three classes of novel carbon-based materials: carbon aerogels, single-walled carbon nanotubes, and high thermal conductivity graphitic foams. The ...

Demir, Nasser Soliman, 1982-

2004-01-01T23:59:59.000Z

22

Theoretical Analysis for Obtaining Physical Properties of Composite Electrodes  

E-Print Network [OSTI]

, 2003. Composite electrodes, composed of a mixture of electronically and ionically conducting materials and electronic conductivities of Nafion/ carbon composites. Shibuya et al.1 used an interdigitated arrayTheoretical Analysis for Obtaining Physical Properties of Composite Electrodes Parthasarathy M

Weidner, John W.

23

Chemical, physical, and organoleptic properties of acorns of selected species  

E-Print Network [OSTI]

CHEMICAL, PHYSICAL, AND ORGANOLEPTIC PROPERTIES OF ACORNS OF SELECTED SPECIES A Thesis By RALPH PAUL OFCARCIK Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE J'anuary 1969 Major Subject& Food Technology CHEMICAL, PHYSICAL, AND ORGANOLEPTIC PROPERTIES OF ACORNS OF SELECTED SPECIES A Thesis RALPH PAUL OFCARCIK Approved as to style and content by: (Chaxrman C ttee) (Head of Department) mber...

Ofcarcik, Ralph Paul

1969-01-01T23:59:59.000Z

24

Synthesis, morphology and optical properties of LaFeO{sub 3} nanospheres  

SciTech Connect (OSTI)

LaFeO{sub 3} nanospheres have been successively synthesized via hydrothermal method. Structural, morphological and optical properties of the prepared nanopowder were analyzed by powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV–Vis absorption spectroscopy. The UV–Vis shows strong absorption at 475 nm which has excellent visible light absorption ability. Band gap energy of the prepared nanosphere was found to be 2.60 eV. The results indicate that the LaFeO{sub 3} nanospheres prepared by this method could be a kind of photocatalytic material.

Kumar, R. Dhinesh [Crystal Growth Centre, Anna University, Chennai - 600 025 (India); Jayavel, R., E-mail: rjvel@annauniv.edu [Crystal Growth Centre, Anna University, Chennai - 600 025, India and Centre for Nanoscience and Technology, Anna University, Chennai - 600 025 (India)

2014-04-24T23:59:59.000Z

25

The correlation of epitaxial graphene properties and morphology of SiC (0001)  

SciTech Connect (OSTI)

The electronic properties of epitaxial graphene (EG) on SiC (0001) depend sensitively on the surface morphology of SiC substrate. Here, 2–3 layers of graphene were grown on on-axis 6H-SiC with different step densities realized through controlling growth temperature and ambient pressure. We show that epitaxial graphene on SiC (0001) with low step density and straight step edge possesses fewer point defects laying mostly on step edges and higher carrier mobility. A relationship between step density and EG mobility is established. The linear scan of Raman spectra combined with the atomic force microscopy morphology images revealed that the Raman fingerprint peaks are nearly the same on terraces, but shift significantly while cross step edges, suggesting the graphene is not homogeneous in strain and carrier concentration over terraces and step edges of substrates. Thus, control morphology of epitaxial graphene on SiC (0001) is a simple and effective method to pursue optimal route for high quality graphene and will be helpful to prepare wafer sized graphene for device applications.

Guo, Y.; Guo, L. W., E-mail: lwguo@iphy.ac.cn, E-mail: xlchen@iphy.ac.cn; Huang, J.; Jia, Y. P.; Lin, J. J.; Lu, W.; Li, Z. L. [Research and Development Center for Functional Crystals, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Yang, R. [Nanoscale Physics and Devices Laboratory, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Chen, X. L., E-mail: lwguo@iphy.ac.cn, E-mail: xlchen@iphy.ac.cn [Research and Development Center for Functional Crystals, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Collaborative Innovation Center of Quantum Matter, Beijing 100190 (China)

2014-01-28T23:59:59.000Z

26

Composition, morphology and mechanical properties of sputtered TiAlN coating  

SciTech Connect (OSTI)

TiAlN coating was deposited on the tungsten carbide cutting tool by using DC magnetron sputtering system to study the influence of substrate bias and nitrogen flow rate on the composition, morphology and mechanical properties. The negatively substrate bias and nitrogen flow rate was varied from about ?79 to ?221 V and 30 sccm to 72 sccm, respectively. The coating composition and roughness were characterized by using SEM/EDX and Atomic Force Microscopy (AFM), respectively. The dynamic ultra micro hardness tester was used to measure the mechanical properties. The coating hardness increases to about 10-12 GPa with an increase of the negatively substrate bias up to ? 200 V and it tend to decrease with an increase in nitrogen flow rate up to 70 sccm. The increase of hardness follows the increase of Ti and N content and rms coating roughness.

Budi, Esmar, E-mail: esmarbudi@unj.ac.id [Department of Physics, Faculty of Science and Mathematics, Universitas Negeri Jakarta, Jl. Pemuda No. 10, Jakarta 13220 (Indonesia); Razali, M. Mohd. [Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Karung Berkunci No. 1752 Pejabat Pos Durian Tunggal 76109 Melaka (Malaysia); Nizam, A. R. Md. [Faculty of Manufacturing Engineering, UniversitiTeknikal Malaysia Melaka, Karung Berkunci No. 1752 Pejabat Pos Durian Tunggal 76109 Melaka (Malaysia)

2014-03-24T23:59:59.000Z

27

Electrical Insulation Paper and Its Physical Properties at Cryogenic Temperatures  

SciTech Connect (OSTI)

Paper is widely used in various engineering applications due to its physical properties and ease of manufacture. As a result paper has been selected or designed as an electrical insulation material for parts and components in high voltage technology. In the current study we select a paper employed in conventional transformers as the electrical insulation material. The potential of this paper is investigated at cryogenic temperatures to determine its physical properties for high temperature superconducting power applications. Dielectric measurements were performed using impedance spectroscopy at a constant frequency. Dielectric breakdown tests were performed on samples at 77 K using a liquid nitrogen bath.

Tuncer, Enis [ORNL] [ORNL; Polyzos, Georgios [ORNL] [ORNL; Sauers, Isidor [ORNL] [ORNL; James, David Randy [ORNL] [ORNL

2011-01-01T23:59:59.000Z

28

HYDRAULIC AND PHYSICAL PROPERTIES OF SALTSTONE GROUTS AND VAULT CONCRETES  

SciTech Connect (OSTI)

The Saltstone Disposal Facility (SDF), located in the Z-Area of the Savannah River Site (SRS), is used for the disposal of low-level radioactive salt solution. The SDF currently contains two vaults: Vault 1 (6 cells) and Vault 4 (12 cells). Additional disposal cells are currently in the design phase. The individual cells of the saltstone facility are filled with saltstone. Saltstone is produced by mixing the low-level radioactive salt solution, with blast furnace slag, fly ash, and cement (dry premix) to form a dense, micro-porous, monolithic, low-level radioactive waste form. The saltstone is pumped into the disposal cells where it subsequently solidifies. Significant effort has been undertaken to accurately model the movement of water and contaminants through the facility. Key to this effort is an accurate understanding of the hydraulic and physical properties of the solidified saltstone. To date, limited testing has been conducted to characterize the saltstone. The primary focus of this task was to estimate the hydraulic and physical properties of three types of saltstone and two vault concretes. The saltstone formulations included saltstone premix batched with (1) Deliquification, Dissolution, and Adjustment (DDA) salt simulant (w/pm 0.60), (2) Actinide Removal Process (ARP)/Modular Caustic Side Solvent Extraction Unit (MCU) salt simulant (w/pm 0.60), and (3) Salt Waste Processing Facility (SWPF) salt simulant (w/pm 0.60). The vault concrete formulations tested included the Vault 1/4 concrete and two variations of the Vault 2 concrete (Mix 1 and Mix 2). Wet properties measured for the saltstone formulations included yield stress, plastic viscosity, wet unit weight, bleed water volume, gel time, set time, and heat of hydration. Hydraulic and physical properties measured on the cured saltstone and concrete samples included saturated hydraulic conductivity, moisture retention, compressive strength, porosity, particle density, and dry bulk density. These properties were determined following a minimum 28 day curing period. Additional testing of the three saltstone formulations was conducted following a minimum 90 day curing period. The compressive strength of each saltstone and concrete material was measured at approximately 14, 28, 56, and 90 days. Recommended hydraulic property values for each saltstone grout and the vault concretes are provided. The hydraulic properties provided for each material include the saturated hydraulic conductivity, dry bulk density, particle density, and porosity. In addition, water retention data are presented for each material along with the van Genuchten transport parameters as determined using the RETC code.

Dixon, K; John Harbour, J; Mark Phifer, M

2008-11-25T23:59:59.000Z

29

Physical-chemical property based sequence motifs and methods regarding same  

DOE Patents [OSTI]

A data analysis system, program, and/or method, e.g., a data mining/data exploration method, using physical-chemical property motifs. For example, a sequence database may be searched for identifying segments thereof having physical-chemical properties similar to the physical-chemical property motifs.

Braun, Werner (Friendswood, TX); Mathura, Venkatarajan S. (Sarasota, FL); Schein, Catherine H. (Friendswood, TX)

2008-09-09T23:59:59.000Z

30

PHYSICAL PROPERTY MEASUREMENTS OF LABORATORY PREPARED SALTSTONE GROUT  

SciTech Connect (OSTI)

The Saltstone Production Facility (SPF) built two new Saltstone Disposal Units (SDU), SDU 3 and SDU 5, in 2013. The variable frequency drive (VFD) for the grout transfer hose pump tripped due to high current demand by the motor during the initial radioactive saltstone transfer to SDU 5B on 12/5/2013. This was not observed during clean cap processing on July 5, 2013 to SDU 3A, which is a slightly longer distance from the SPF than is SDU 5B. Saltstone Design Authority (SDA) is evaluating the grout pump performance and capabilities to transfer the grout processed in SPF to SDU 3/5. To assist in this evaluation, grout physical properties are required. At this time, there are no rheological data from the actual SPF so the properties of laboratory prepared samples using simulated salt solution or Tank 50 salt solution will be measured. The physical properties of grout prepared in the laboratory with de-ionized water (DI) and salt solutions were obtained at 0.60 and 0.59 water to premix (W/P) ratios, respectively. The yield stress of the DI grout was greater than any salt grout. The plastic viscosity of the DI grout was lower than all of the salt grouts (including salt grout with admixture). When these physical data were used to determine the pressure drop and fluid horsepower for steady state conditions, the salt grouts without admixture addition required a higher pressure drop and higher fluid horsepower to transport. When 0.00076 g Daratard 17/g premix was added, both the pressure drop and fluid horsepower were below that of the DI grout. Higher concentrations of Daratard 17 further reduced the pressure drop and fluid horsepower. The uncertainty in the single point Bingham Plastic parameters is + 4% of the reported values and is the bounding uncertainty. Two different mechanical agitator mixing protocols were followed for the simulant salt grout, one having a total mixing time of three minutes and the other having a time of 10 minutes. The Bingham Plastic parameters were essentially the same for the salt grout without admixture. When Daratard 17 was added, the Bingham Plastic yield stress increased for the 10 minute mix. The simulant salt used in this task had similar physical properties of the Tank 50 3Q13 salt grout and is recommended for future use, if the salt solution in Tank 50 does not change. The design basis physical properties used to size the pumps and mixers at SPF were obtained from DPST-85-312. The grouts characterized in this report are bounded by the design basis density and Bingham Plastic yield stress. The opposite is true for the plastic viscosity. Steady state pressure drop calculations were performed for the design basis values using the flow rate for the clean cap and salt grouts and they bound the pressure drop of the grouts characterized in this report. A comparison of the lab prepared samples to PI ProcessBook data, specifically average pressure drop, indicate that the lab prepared samples are more viscous in nature than what is processed in the facility. This difference could be due to the applied shear rates which could be lower in the lab as compared to the facility and that fact the SPF added flush water, making this comparison more difficult. A perfunctory review of the PI ProcessBook data was discussed. It may be possible that the frequency that the distributed control system alters the grout pump speed to maintain grout hopper volume can negatively affect the efficiency of the grout pump.

Hansen, E.; Cozzi, A.; Edwards, T.

2014-05-05T23:59:59.000Z

31

A morphology of consolidation : spatial form and physical change in an American suburb  

E-Print Network [OSTI]

This thesis is an exploration and analysis of the spatial form and structure of physical change within an American suburb. Typified as middle class, residential, and single family, one finds in such settings detached one ...

Seppanen, Brent

1983-01-01T23:59:59.000Z

32

Computational Studies of Physical Properties of Boron Carbide  

SciTech Connect (OSTI)

The overall goal is to provide valuable insight in to the mechanisms and processes that could lead to better engineering the widely used boron carbide which could play an important role in current plight towards greener energy. Carbon distribution in boron carbide, which has been difficult to retrieve from experimental methods, is critical to our understanding of its structure-properties relation. For modeling disorders in boron carbide, we implemented a first principles method based on supercell approach within our G(P,T) package. The supercell approach was applied to boron carbide to determine its carbon distribution. Our results reveal that carbon prefers to occupy the end sites of the 3-atom chain in boron carbide and further carbon atoms will distribute mainly on the equatorial sites with a small percentage on the 3-atom chains and the apex sites. Supercell approach was also applied to study mechanical properties of boron carbide under uniaxial load. We found that uniaxial load can lead to amorphization. Other physical properties of boron carbide were calculated using the G(P,T) package.

Lizhi Ouyang

2011-09-30T23:59:59.000Z

33

Galaxy Morphology  

E-Print Network [OSTI]

Galaxy morphology is a product of how galaxies formed, how they interacted with their environment, how they were influenced by internal perturbations, AGN, and dark matter, and of their varied star formation histories. This article reviews the phenomenology of galaxy morphology and classification with a view to delineating as many types as possible and how they relate to physical interpretations. The old classification systems are refined, and new types introduced, as the explosion in available morphological data has modified our views on the structure and evolution of galaxies.

Buta, Ronald J

2011-01-01T23:59:59.000Z

34

PHYSICAL PROPERTIES OF COOLING PLASMA IN QUIESCENT ACTIVE REGION LOOPS  

SciTech Connect (OSTI)

In the present work, we use SOHO/SUMER, SOHO/UVCS, SOHO/EIT, SOHO/LASCO, STEREO/EUVI, and Hinode/EIS coordinated observations of an active region (AR 10989) at the west limb taken on 2008 April 8 to study the cooling of coronal loops. The cooling plasma is identified using the intensities of SUMER spectral lines emitted at temperatures in the 4.15 {<=} log T {<=} 5.45 range. EIS and SUMER spectral observations are used to measure the physical properties of the loops. We found that before cooling took place these loops were filled with coronal hole-like plasma, with temperatures in the 5.6 {<=} log T {<=} 5.9 range. SUMER spectra also allowed us to determine the plasma temperature, density, emission measure, element abundances, and dynamic status during the cooling process. The ability of EUVI to observe the emitting region from a different direction allowed us to measure the volume of the emitting region and estimate its emission measure. Comparison with values measured from line intensities provided us with an estimate of the filling factor. UVCS observations of the coronal emission above the active region showed no streamer structure associated with AR 10989 at position angles between 242{sup 0}and 253.{sup 0} EIT, LASCO, and EUVI-A narrowband images and UVCS spectral observations were used to discriminate between different scenarios and monitor the behavior of the active region in time. The present study provides the first detailed measurements of the physical properties of cooling loops, a very important benchmark for theoretical models of loop cooling and condensation.

Landi, E. [Artep, Inc. at Naval Research Laboratory, 4555 Overlook Ave. S.W., 20375-5320, Washington DC (United States); Miralles, M. P. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., MS-50, Cambridge, MA 02138 (United States); Curdt, W. [Max Planck Institut fuer Sonnensystemforschung, Max Planck Strasse 2, Katlenburg-Lindau 37191 (Germany); Hara, H. [National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588 (Japan)

2009-04-10T23:59:59.000Z

35

Physical Properties of Intermetallic FE2VA1  

SciTech Connect (OSTI)

Fe{sub 2}VAl has recently been discovered to have a negative temperature coefficient of resistivity, moderately enhanced specific heat coefficient, and a large DOS at the Fermi level by photoemission. This triggered a round of heated research to understand the ground state of this material, both theoretically and experimentally. here they report a comprehensive characterization of Fe{sub 2}VAl. X-ray diffraction exhibited appreciable antisite disorder in all of our samples. FTIR spectroscopy measurements showed that the carrier density and scattering time had little sample-to-sample variation or temperature dependence for near-stoichiometric samples. FTIR and DC resistivity suggest that the transport properties of Fe{sub 2}VAl are influenced by both localized and delocalized carriers, with the former primarily responsible for the negative temperature coefficient of resistivity. Magnetization measurements reveal that near-stoichiometric samples have superparamagnetic clusters with at least two sizes of moments. X-ray photoemission from Fe core level showed localized magnetic moments on site-exchanged Fe. They conclude that in Fe{sub 2}VAl, antisite disorder causes significant modification to the semi-metallic band structure proposed by LDA calculations. With antisite disorder considered, they are now able to explain most of the physical properties of Fe{sub 2}VAl.

Ye Feng

2002-05-30T23:59:59.000Z

36

Physical and mechanical properties of bituminous mixtures containing oil shales  

SciTech Connect (OSTI)

Rutting of bituminous surfaces on the Jordanian highways is a recurring problem. Highway authorities are exploring the use of extracted shale oil and oil shale fillers, which are abundant in Jordan. The main objectives of this research are to investigate the rheological properties of shale oil binders (conventional binder with various percentages of shale oil), in comparison with a conventional binder, and to investigate the ability of mixes to resist deformation. The latter is done by considering three wearing course mixes containing three different samples of oil shale fillers--which contained three different oil percentages--together with a standard mixture containing limestone filler. The Marshall design method and the immersion wheel tracking machine were adopted. It was concluded that the shale oil binders displayed inconsistent physical properties and therefore should be treated before being used. The oil shale fillers have provided mixes with higher ability to resist deformation than the standard mix, as measured by the Marshall quotients and the wheel tracking machine. The higher the percentages of oil in the oil shale fillers, the lower the ability of the mixes to resist deformation.

Katamine, N.M.

2000-04-01T23:59:59.000Z

37

Statistics of physical properties of dark matter clusters  

SciTech Connect (OSTI)

We have identified over 2000 well resolved cluster halos, and also their associated bound subhalos, from the output of 1024{sup 3} particle cosmological N-body simulation (of box size 320h{sup -1}Mpc and softening length 3.2h{sup -1}kpc). We present an algorithm to identify those halos still in the process of relaxing into dynamical equilibrium, and a detailed analysis of the integral and internal physical properties for all the halos in our sample. The majority are prolate, and tend to rotate around their minor principle axis. We find there to be no correlation between the spin and virial mass of the clusters halos and that the higher mass halos are less dynamically relaxed and have a lower concentration. Additionally, the orbital angular momentum of the substructure is typically well aligned with the rotational angular momentum of the ''host'' halo. There is also evidence of the transfer of angular momentum from subhalos to their host. Overall, we find that measured halo properties are often significantly influenced by the fraction of mass contained within substructure. Dimensionless properties do depend weakly on the ratio of halo mass (M{sub h}) to our characteristic mass scale (M{sub *} = 8 x 10{sup 14}h{sup -1}M{sub {circle_dot}}). This lack of self-similarity is in the expected sense in that, for example, ''old halos'' with M{sub h}/M{sub *} << 1 have less substructure than ''young halos'' with M{sub h}/M{sub *} >> 1.

Shaw, Laurie; /Cambridge U., Inst. of Astron.; Weller, Jochen; /Fermilab /University Coll. London; Ostriker, Jeremiah P.; /Cambridge U., Inst. of Astron. /Princeton U.; Bode, Paul; /Princeton U. Observ.

2005-09-01T23:59:59.000Z

38

Carbon nanotubes based ultrasonic transducer: realization process, morphological and mechanical properties  

E-Print Network [OSTI]

Carbon nanotubes based ultrasonic transducer: realization process, morphological and mechanical in cementitous materials, carbon nanotubes based capacitive ultrasonic transducers (cMUT) are promising sensors (1 µm²). In the proposed device, the cMUT membrane is made of aligned single-walled carbon nanotubes

Paris-Sud XI, Université de

39

Relationship between fuel composition and properties. III. Physical properties of US Navy Shale-II fuels  

SciTech Connect (OSTI)

The Naval Research Laboratory and the Naval Air Propulsion Center are currently participating in a program to characterize the products from the Shale-II refining process conducted by the Standard Oil Company of Ohio at their refinery in Toledo, Ohio. This paper is concerned with a part of this program and is a summary of the work on the physical and related properties of three military type fuels derived from shale: JP-5 and JP-8 jet turbine fuels, and diesel fuel marine (DFM). The shale derived fuels which were used in these studies were derived from Paraho crude shale oil. The boiling range distribution of a representative sample of each of the three fuels was determined by gas chromatography. Data for specific gravity, freezing point, pour point, flammability, ignition and electrostatic properties and copper corrosion tests were also obtained. Conclusions from this study are: physical properties of the Shale-II fuels are similar to that of equivalent fuels derived from petroleum; and differences observed could be minimized by modest changes in refining steps.

Affens W.A. (Naval Research Lab., Washington, DC); Hall, J.M.; Beal, E.; Hazlett, R.N.; Nowack, C.J.; Speck, G.

1980-01-01T23:59:59.000Z

40

Physical and Mechanical Properties of Niobium for SRF Science and Technology  

SciTech Connect (OSTI)

Optimized mechanical and physical properties of high purity niobium are crucial for obtaining high performance SRF particle beam accelerator structures consistently. This paper summarizes these important material properties for both high purity polycrystalline and single crystal niobium.

Ganapati Rao Myneni

2006-10-31T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Role of sonic energy on growth morphology and optical properties of ZnO:S nanostructures  

SciTech Connect (OSTI)

ZnO nanopowders doped with sulphur were prepared by sonochemical method. The input power of ultrasound was varied as 40%, 50% and 60% of the maximum power (375 W) in both continuous and pulsed mode. XRD results show the average size of the nanoparticles is the least for those prepared with 50% input power as well as the micro-strain. FESEM studies showed the formation of nanorods clubbed together to form flower like structure for these samples. In rest of the cases, no definite morphology was obtained. High resolution transmission electron microscopy (HRTEM) reveals the formation of nanorods oriented along c-axis for those samples prepared with 50% input power. No cavitation at 40% and excessive dissolution at 60% may lead to this type of morphology. Absorption studies showed high absorbance for sulphur doped samples but this was highest for the samples prepared with 60% input power.

Panda, Nihar Ranjan, E-mail: niharphysics@yahoo.co.in; Nayak, Pratibindhya [School of Physics, Sambalpur University, Jyoti Vihar, Burla-768019, Odisha (India); Acharya, Bhabani Shankar [C.V. Raman College of Engineering, Bhubaneswar-752054, Odisha (India)

2014-04-24T23:59:59.000Z

42

Morphology, microstructure, stress and damage properties of thin film coatings for the LCLS x-ray mirrors  

SciTech Connect (OSTI)

The development and properties of reflective coatings for the x-ray offset mirror systems of the Linac Coherent Light Source (LCLS) free-electron laser (FEL) are discussed in this manuscript. The uniquely high instantaneous dose of the LCLS FEL beam translates to strict limits in terms of materials choice, thus leading to an x-ray mirror design consisting of a reflective coating deposited on a silicon substrate. Coherent wavefront preservation requirements for these mirrors result in stringent surface figure and finish specifications. DC-magnetron sputtered B{sub 4}C and SiC thin film coatings with optimized stress, roughness and figure properties for the LCLS x-ray mirrors are presented. The evolution of microstructure, morphology, and stress of these thin films versus deposition conditions is discussed. Experimental results on the performance of these coatings with respect to FEL damage are also presented.

Soufli, R; Baker, S L; Robinson, J C; Gullikson, E M; McCarville, T J; Pivovaroff, M J; Stefan, P; Hau-Riege, S P; Bionta, R

2009-04-23T23:59:59.000Z

43

Field Emission Properties of Single-Walled Carbon Nanotubes with a Variety of Emitter-Morphologies  

E-Print Network [OSTI]

1 Field Emission Properties of Single-Walled Carbon Nanotubes with a Variety of Emitter@chemsys.t.u-tokyo.ac.jp Field emission properties of single-walled carbon nanotubes (SWNTs), which have been prepared through: single-walled carbon nanotube, field emission, alcohol catalytic chemical vapor deposition, ethanol

Maruyama, Shigeo

44

Effect of n-HA content on the isothermal crystallization, morphology and mechanical property of n-HA/PLGA composites  

SciTech Connect (OSTI)

Graphical abstract: Effect of n-HA content on the isothermal crystallization, morphology and mechanical property of n-HA/PLGA composites was studied in details. The results showed that the addition of higher content of g-n-HA was favorable to promote the crystallization better in g-n-HA/PLGA composites, but it could also cause more agglomeration in PLGA matrix, as a result of worse mechanical properties, and the addition content of 3 wt% g-n-HA to PLGA matrix was an appropriate proportion, which had the highest bending strength among these g-n-HA/PLGA composites, and it might be potential to be used in biomedical fields in future. Highlights: ? The effect of n-HA content on the n-HA/PLGA composites was studied in detail. ? Isothermal crystallization, microstructure and mechanical property were studied. ? The relation between n-HA content and properties of n-HA/PLGA composite was found. ? An appropriate proportion of n-HA in n-HA/PLGA composite was obtained. - Abstract: A serials of g-n-HA/PLGA composites with surface-modified g-n-HA of 1%, 3%, 6%, 10% and 15% in weight were prepared by solution mixing. The isothermal crystallization, morphology and mechanical property of g-n-HA/PLGA composites were investigated by differential scanning calorimeter (DSC), scanning electron microscope (SEM) and electromechanical universal tester. The results showed that Avrami equation was suitable for describing the isothermal crystallization process in this system, and the crystallization rate of g-n-HA/PLGA composites containing more than 3 wt% g-n-HA was basically accord with the relational expression of T{sub 110} {sub °C} > T{sub 105°C} > T{sub 115°C} > T{sub 120°C}. Moreover, at the same Tc, crystallization rate was greatly enhanced with the increasing of g-n-HA acting as nucleate. However, the addition of higher content of g-n-HA would cause more agglomeration in PLGA matrix, so that the mechanical properties of g-n-HA/PLGA composites would gradually decrease. In conclusion, the addition of higher content of g-n-HA was favorable to promote the crystallization better in g-n-HA/PLGA composites, but it could also cause more agglomeration in PLGA matrix, result in worse mechanical properties, and the addition content of 3 wt% g-n-HA to PLGA matrix was an appropriate proportion, which had the highest bending strength among these g-n-HA/PLGA composites, and it might be potential to be used in biomedical fields in future.

Liuyun, Jiang, E-mail: jlytxg@163.com [Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041 (China); Chengdong, Xiong [Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041 (China); Lixin, Jiang [Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041 (China); Graduated School of Chinese Academy of Sciences, Beijing 100039 (China); Dongliang, Chen; Qing, Li [Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041 (China)

2013-03-15T23:59:59.000Z

45

Investigation of microstructure, surface morphology, and hardness properties of PtIr films by magnetron sputtering  

SciTech Connect (OSTI)

Pt{sub 1-x}Ir{sub x} films with x varying from 22.76 to 63.25 at. % are deposited on (100) Si wafer substrates at 400 deg. C by magnetron sputtering deposition. The effects of the Ir concentration on the microstructure, morphology, and hardness of PtIr films are investigated by field emission scanning electron microscopy, x-ray diffraction, atomic force microscopy, and nanoindentation system. The columnar structures are observed by field emission scanning electron microscopy. X-ray diffraction analysis reveals that PtIr films have preferred orientation along Pt(111) when the Ir concentration is below 50.84 at. %. When the Ir content is more than 50.84 at. %, the PtIr film shifts to another preferred orientation, Ir(111). The surface morphology is analyzed by atomic force microscopy. The roughness of the PtIr films decreases with increasing Ir content. The hardness of all the PtIr films is below 20 GPa. The maximum hardness of the PtIr films is about 14.9 GPa when the Ir concentration is 57.9 at. %.

Lee, Chao-Te; Liu, Bo-Heng; Chang, Chun-Ming; Lin, Yu-Wei [Instrument Technology Research Center, National Applied Research Laboratories, Hsinchu 300, Taiwan (China)

2010-09-15T23:59:59.000Z

46

Photovoltaic properties and morphology of organic solar cells based on liquid-crystal semiconducting polymer with additive  

SciTech Connect (OSTI)

Bulk heterojunction organic solar cell based on liquid crystal semiconducting polymers of poly[9,9-dioctylfluorene-co-bithiophene] (F8T2) as p-type semiconductors and fullerenes (C{sub 60}) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as electron donor and acceptor has been fabricated and characterized for improving photovoltaic and optical properties. The photovoltaic performance including current voltage curves in the dark and illumination of the F8T2/C{sub 60} conventional and inverted bulk heterojunction solar cells were investigated. Relationship between the photovoltaic properties and morphological behavior was focused on tuning for optimization of photo-voltaic performance under annealing condition near glass transition temperature. Additive-effect of diiodooctane (DIO) and poly(3-hexylthiophene-2,5-diyl) (P3HT) on the photovoltaic performance and optical properties was investigated. Mechanism of the photovoltaic properties of the conventional and inverted solar cells will be discussed by the experimental results.

Suzuki, Atsushi; Zushi, Masahito; Suzuki, Hisato; Ogahara, Shinichi; Akiyama, Tsuyoshi; Oku, Takeo [Department of Materials Science, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga 522-8533 (Japan)

2014-02-20T23:59:59.000Z

47

Synthetic process engineered polyaniline nanostructures with tunable morphology and physical properties  

E-Print Network [OSTI]

Engineering, Lamar University, Beaumont, TX 77710, USA b Department of Chemistry and Biochemistry, Lamar

Guo, John Zhanhu

48

Synthesis, morphology and optical properties of GaN and AlGaN semiconductor nanostructures  

SciTech Connect (OSTI)

Hexagonal Gallium Nitride (GaN) and Aluminum Gallium Nitride (AlGaN) nanoparticles were synthesized by sol-gel method using Ethylene Diamine Tetra Acetic acid (EDTA) complex route. Powder X-ray diffraction (PXRD) analysis confirms the hexagonal wurtzite structure of GaN and Al{sub 0.25}Ga{sub 0.75}N nanoparticles. Surface morphology and elemental analysis were carried out by Scanning Electron Microscope (SEM) and Energy Dispersive X-ray spectroscopy (EDX). The room temperature Photoluminescence (PL) study shows the near band edge emission for GaN at 3.35 eV and at 3.59 eV for AlGaN nanoparticles. The Aluminum (Al) composition of 20% has been obtained from PL emission around 345 nm.

Kuppulingam, B., E-mail: drbaskar2009@gmail.com; Singh, Shubra, E-mail: drbaskar2009@gmail.com; Baskar, K., E-mail: drbaskar2009@gmail.com [Crystal Growth Centre, Anna University, Chennai-600025 (India)

2014-04-24T23:59:59.000Z

49

Organic matter added to bareroot nursery beds influences soil properties and morphology of Fraxinus  

E-Print Network [OSTI]

responses to nursery soil amendments vary with different forms and amounts of OM. Benefits to seedling, including soil properties. Hardwood seedlings are generally more demanding than conifer seedlings in terms). Aggregates formed between OM and the soil help increase filtration and retention of water and increase root

50

PHYSICAL AND MECHANICAL PROPERTIES OF SOME ALUMINUM-LITHIUM ALLOYS...  

Office of Scientific and Technical Information (OSTI)

3: Argonne National Lab., Ill. A literature survey of room-temperature properties of Al-- Li alloys was made. The eutectic composition was determined by thermal analysis and...

51

The interplay of structure and optical properties in individual semiconducting nanostructures  

E-Print Network [OSTI]

Semiconductor nanostructures exhibit distinct properties by virtue of nano-scale dimensionality, allowing for investigations of fundamental physics and the improvement of optoelectronic devices. Nanoscale morphological ...

Brewster, Megan Marie

2011-01-01T23:59:59.000Z

52

Effects of Earth encounters on the physical properties of near-earth objects  

E-Print Network [OSTI]

The effects of Earth encounters on the physical properties of near-Earth objects (NEOs) have been shown to be significant factors in their evolution. Previous studies have examined the effects of these encounters on ...

Siu, Ho Chit

2014-01-01T23:59:59.000Z

53

Physical-Property Measurements on Core Samples from Drill-Holes...  

Open Energy Info (EERE)

Physical-Property Measurements on Core Samples from Drill-Holes DB-1 and DB-2, Blue Mountain Geothermal Prospect, North-Central Nevada Jump to: navigation, search OpenEI Reference...

54

Investigating the morphological, mechanical and degradation properties of scaffolds comprising collagen, gelatin and elastin for use in soft tissue engineering  

E-Print Network [OSTI]

, collagen with or without (±) elastin were swollen in 0.05 M acetic acid at 4 ± 2°C overnight to produce a 1% (w/v) protein suspension. The resulting suspension was homogenised on ice for 10 min at 9,500 rpm using an Ultra-Turrax VD125 (VWR International... the optimal physical properties and microenvironment for cells. Various different materials have been used to produce scaffolds for cardiac tissue engineering; collagen type I (van Luyn et al. 2002; Zimmermann et al. 2002), collagen and glycosaminoglycans...

Grover, CN; Best, Serena Michelle; Cameron, Ruth Elizabeth

2012-07-09T23:59:59.000Z

55

Effect of gamma radiation on selected functional and physical properties of liquid egg white  

E-Print Network [OSTI]

had larger air cells with thicker cell walls. The cakes were also tougher and had more resistance to compression. CHAPTER I II EFFECT OF GAMMA RADIATION ON SELECTED PHYSICAL PROPERTIES OF LIqUID EGG WHITE Intr oduct ion As indi. cated in Chapter... EFFECT OF GAMMA RADIATION ON SELECTED FUNCTIONAL AND PHYSICAL PROPERTIES OF LIQUID EGG WHITE A Thesis By Hershell Ray Ball, Jr. Approved as to style and content by) (Chairman of Committee) ead of Department) (Me mba (Member) ( ber) ~Ja...

Ball, Hershell Ray

1966-01-01T23:59:59.000Z

56

A Study of Physical, Chemical, and Mineralogical Properties of the Lakeland Soil Series in Texas  

E-Print Network [OSTI]

A STUDY OF PHYSICAL, CHEMICAL, AND MINERALOGICAL PROPERTIES OF THE LAKELAND SOIL SERIES IN TEXAS A Thesis By Ernest Demois Rivers Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE Nay~ 1960 Na)or Subjects Agronomy A STUDY OF PHYSICAL~ CHEMICAL~ AND MINERALOGICAL PROPERTIES OF THE LAKELAND SOIL SERIES IN TEXAS A Thesis Ernest Demois Rivers Approved as to style and content, by...

Rivers, Ernest Demois

1960-01-01T23:59:59.000Z

57

Effect of Pore Morphology on the Electrochemical Properties of Electric Double Layer Carbon Cryogel Supercapacitors  

SciTech Connect (OSTI)

In this study, a group of carbon cryogels have been synthesized using resorcinol formaldehyde as precursors, and altered via catalysis and activation, to obtain varied nanostructures and pore size distributions. To understand the relation between structure and electrochemical properties, an alternate approach to de Levi's cylindrical pore, transmission line method was utilized. Using electrochemical impedance spectroscopy, the capacitor can be studied as a dielectric system composed of a porous electrode and the electrolyte (tetraethylammonium tetrafluoroborate in propylene carbonate). The complex capacitance and power are used to study the behavior of the system below the relaxation frequency f{sub 0} ({var_phi} = -45{sup o}). Therefore, the relaxation of the capacitor system at the low frequency range, f

Garcia, B.B.; Feaver, A.M.; Zhang, Q.; Champion, R.D.; Cao, G.; Fister, T.T.; Nagle, K.P.; Seidler, G.T. (UWASH)

2008-07-28T23:59:59.000Z

58

Development of an ASPEN PLUS physical property database for biofuels components  

SciTech Connect (OSTI)

Physical property data for many of the key components used in the simulation for the ethanol from lignocellulose process are not available in the standard ASPEN PLUS property databases. Indeed, many of the properties necessary to successfully simulate this process are not available anywhere. In addition, inputting the available properties into each simulation is awkward and tedious, and mistakes can be easily introduced when a long list of physical property equation parameters is entered. Therefore, one must evaluate the literature, estimate properties where necessary, and determine a set of consistent physical properties for all components of interest. The components must then be entered into an in-house NREL ASPEN PLUS database so they can be called on without being retyped into each specific simulation. The first phase of this work is complete. A complete set of properties for the currently identifiable important compounds in the ethanol process is attached. With this as the starting base the authors can continue to search for and evaluate new properties or have properties measured in the laboratory and update the central database.

Wooley, R.J.; Putsche, V.

1996-04-01T23:59:59.000Z

59

Effective Interaction Potentials and Physical Properties of Complex Plasmas  

SciTech Connect (OSTI)

Microscopic, thermodynamic and transport properties of complex plasmas are investigated on the basis of effective potentials of interparticle interaction. These potentials take into account correlation effects and quantum-mechanical diffraction. Plasma composition, thermodynamic functions of hydrogen and helium plasmas are obtained for a wide region of coupling parameter. Collision processes in partially ionized plasma are considered; some kinetic characteristics such as phase shift, scattering cross section, bremsstrahlung cross section and absorption coefficient are investigated. Dynamic and transport properties of dusty plasma are studied by computer simulation method of the Langevin dynamics.

Ramazanov, T. S.; Dzhumagulova, K. N.; Gabdullin, M. T.; Omarbakiyeva, Y. A. [Institute of Experimental and Theoretical Physics, al-Farabi Kazakh National University, 96a Tole Bi, Almaty 050012 (Kazakhstan)

2009-11-10T23:59:59.000Z

60

Physical properties of Kraft Black Liquor. Interim report, Phase II  

SciTech Connect (OSTI)

Objectives are to determine the rheological, thermal, and surface properties of Kraft Black Liquors, and to relate these properties to the chemical composition and to pulping conditions. A four-variable, multi-level pulping experiment is being conducted. Pulping results are reported. Complete analyses of the liquors have been done. Thermal analyses have been done. DSC was employed to determine heat capacities of black liquors and lignins. Rheological (viscosity) studies are being conducted. Density and thermal expansion have been studied for seven liquors. Energy savings through more efficient recovery systems are appreciable.

Fricke, A.L.

1985-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Physical, chemical and mineralogical properties of some soils of the Welder Wildlife Foundation  

E-Print Network [OSTI]

. ed land Le+alta Niguel 75 TABLE OF CONTENTS (Cont. ) Nueces Tiooano Trlntty Villaoy Zavala 4 0 4 Page Page Physical properti. es of Medio loamy fine sand, Orelia fine sandy loam, and Victoria clay Chemical properties of Medio loamy fine... sand, Orelia f'ine sandy loamiand Victoria clay Exchangeable, extractable& and saturation extract, soluble cations of Medio loamy f'ine sand, Orelia fine sandy loam and Victoria clay Mineralogical properties of Medio loamy fine send~ Orelia fine...

Kovar, John Alvis

1963-01-01T23:59:59.000Z

62

Structural and physical properties of BiVO{sub 3}  

SciTech Connect (OSTI)

We report the phase stabilization and properties of BiVO{sub 3} (BVO) thin films, grown on (001) SrTiO{sub 3} and LaAlO{sub 3}, using the pulsed laser deposition technique. Bi and V are in 3+ oxidation states as measured by using x-ray photoelectrons spectroscopy. BVO exhibits a Curie-Weiss paramagnetic behaviour and about ?26 K Weiss temperature. This demonstrates the presence of a strong correlation effect due to the spin fluctuation. Additionally, these films exhibit a semiconducting behaviour owing to the thermally activated conduction process. A plausible explanation of the observed properties is presented by comparing with the closely related LaVO{sub 3} and other orthovanadates.

Singh, M. P., E-mail: mangala.singh@gmail.com; Razavi, F. S., E-mail: mangala.singh@gmail.com [Department of Physics, Brock University, 500 Glenridge Avenue, St Catharines, Ontario, L2S 3A1 (Canada)

2014-03-31T23:59:59.000Z

63

Physical properties of kraft black liquor. Final report. Phase I  

SciTech Connect (OSTI)

Methods were selected, equipment installed, and procedures developed for determining rheological properties; for determining thermal properties (stability, density, thermal expansion, and heat capacity); for purification and characterization of lignin (glass transition, stability, weight average molecular weight, and number average molecular weight); and for performing chemical analyses (negative inorganic ions, positive inorganic ions, acid organic salts, lignin, and total solids). A strategy for pulping to supply test liquors was developed, and a statistically designed pulping experiment was specified for a Southern softwood species. Arrangements were made for performing initial pulping work in an industrial pilot plant, and a preliminary set of pulping experiments were conducted. Liquors from the preliminary pulping experiments were used to test procedures and to determine reproducibility of the experiment. Literature was also surveyed and preliminary selection of designs for a pilot digester, and for equipment to determine surface tension were made.

Fricke, A.L.

1983-12-01T23:59:59.000Z

64

Physical properties of bio-diesel & Implications for use of bio-diesel in diesel engines  

SciTech Connect (OSTI)

In this study we identify components of a typical biodiesel fuel and estimate both their individual and mixed thermo-physical and transport properties. We then use the estimated mixture properties in computational simulations to gauge the extent to which combustion is modified when biodiesel is substituted for conventional diesel fuel. Our simulation studies included both regular diesel combustion (DI) and premixed charge compression ignition (PCCI). Preliminary results indicate that biodiesel ignition is significantly delayed due to slower liquid evaporation, with the effects being more pronounced for DI than PCCI. The lower vapor pressure and higher liquid heat capacity of biodiesel are two key contributors to this slower rate of evaporation. Other physical properties are more similar between the two fuels, and their impacts are not clearly evident in the present study. Future studies of diesel combustion sensitivity to both physical and chemical properties of biodiesel are suggested.

Chakravarthy, Veerathu K [ORNL; McFarlane, Joanna [ORNL; Daw, C Stuart [ORNL; Ra, Youngchul [ORNL; Griffin, Jelani K [ORNL; Reitz, Rolf [University of Wisconsin

2008-01-01T23:59:59.000Z

65

Physical properties of single crystalline BaSn{sub 5}  

SciTech Connect (OSTI)

We present a comprehensive study of the binary intermetallic superconductor, BaSn{sub 5}. High-quality single crystalline BaSn{sub 5} was grown out of a Sn flux. Detailed thermodynamic and transport measurements were performed to study BaSn{sub 5}'s normal and superconducting state properties. This material appears to be a strongly coupled, multiband superconductor. H{sub c2}(T) is almost isotropic. De Haas–van Alphen oscillations were observed and two effective masses were estimated from the FFT spectra. Hydrostatic pressure causes a decrease in the superconducting transition temperature at the rate of ??0.053?±?0.001?K/kbar.

Lin, Xiao; Budko, Sergey; Canfield, Paul

2012-01-30T23:59:59.000Z

66

Physical properties of bifunctional BST/LSMO nanocomposites  

SciTech Connect (OSTI)

We report the fabrication of bifunctional nanocomposites consisting of ferroelectric Ba{sub 0.7}Sr{sub 0.3}TiO{sub 3} (BST) and ferromagnetic La{sub 0.67}Sr{sub 0.33}MnO{sub 3} (LSMO) at different concentrations via a high-temperature solid state route. The structural, dielectric, electrical, magnetodielectric (MD), magnetoelectric (ME) and magnetic properties of BST/LSMO nanocomposites were systematically investigated over a wide range of temperatures and frequencies. The X-Ray Diffraction analyses reveal the nanocrystalline nature of the heterostructures, wherein both perovskite phases co-exist. No parasitic phases were observed. The study of the dielectric properties shows that the nanocomposites exhibit relaxor ferroelectric character, with ferroelectric-paraelectric phase transition temperatures around 287–292?K that do not follow the Curie-Weiss law. The electrical measurements indicate that ac conductivities of the nanocomposites follow the Jonscher's universal power law, with activation energies of 0.42–0.63?eV based on Arrhenius-type behavior at high temperatures. The nanocomposites exhibit well-defined ferromagnetic hysteresis loops at room temperature (RT). The MD and ME measurements at RT indicate that BST/LSMO exhibits a nonlinear ME effect at low frequencies, with a threshold near 0.5?T. The magnetocapacitance (MC{sub p}) measurements evidence a quadratic dependence on magnetic field, further confirming the multiferroic nature of BST/LSMO. The order of MC{sub p} was found to be ?7% per Tesla. The analysis of the MC{sub p} measurements indicates that one of the BST/LSMO compositions studied can be considered as a new multiferroic compound.

Beltran-Huarac, Juan, E-mail: baristary26@gmail.com; Morell, Gerardo [Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, Puerto Rico 00931 (United States); Department of Physics, University of Puerto Rico, Rio Piedras Campus, San Juan, Puerto Rico 00936 (United States); Martinez, Ricardo [Department of Mathematics and Physics, University of Puerto Rico, Cayey Campus, Cayey, Puerto Rico 00737 (United States)

2014-02-28T23:59:59.000Z

67

A comprehensive program to develop correlations for physical properties of kraft black liquor. Final report  

SciTech Connect (OSTI)

The overall objective of the program was to develop correlations to predict physical properties within requirements of engineering precision from a knowledge of pulping conditions and of kraft black liquor composition, if possible. These correlations were to include those relating thermodynamic properties to pulping conditions and liquor composition. The basic premise upon which the research was based is the premise that black liquor behaves as a polymer solution. This premise has proven to be true, and has been used successfully in developing data reduction methods and in interpreting results. A three phase effort involving pulping, analysis of liquor composition, and measurement of liquor properties was conducted.

Fricke, A.L.; Zaman, A.A.

1998-05-01T23:59:59.000Z

68

The use of electron maps to constrain some physical properties of solar flares  

E-Print Network [OSTI]

The use of electron maps to constrain some physical properties of solar flares A. M. Massone1 and M Energy Solar Spectroscopic Imager (RHESSI) is a set of Fourier components of the X-ray radiation sam, Italy #12;­ 2 ­ According to a rough classification, two typologies of inverse problems in astronomy can

Piana, Michele

69

EuroGeo4 Paper number 203 ANALYSIS OF MECHANICAL AND PHYSICAL PROPERTIES ON GEOTEXTILES AFTER  

E-Print Network [OSTI]

of time, some level of UV degradation occurs. In this sense, variations in physical and mechanical properties may occur due to degradation by outdoor exposure. This paper presents results of mechanical: geotextile, weathering, laboratory tests. INTRODUCTION Geotextiles (GT) may be exposed to UV radiation

Zornberg, Jorge G.

70

Micellar/Polymer PhysicalProperty Models for Contaminant Cleanup Problems and  

E-Print Network [OSTI]

/polymer phase behavior have been highly successful in simulating enhanced oil recovery processes using for contaminant cleanup [26] and for enhanced oil recovery [14]. Surfactants can be injected as dilute aqueousMicellar/Polymer Physical­Property Models for Contaminant Cleanup Problems and Enhanced Oil

Trangenstein, John A.

71

Physical property changes in hydrate-bearingsediment due to depressurization and subsequent repressurization  

SciTech Connect (OSTI)

Physical property measurements of sediment cores containing natural gas hydrate are typically performed on material exposed at least briefly to non-in situ conditions during recovery. To examine effects of a brief excursion from the gas-hydrate stability field, as can occur when pressure cores are transferred to pressurized storage vessels, we measured physical properties on laboratory-formed sand packs containing methane hydrate and methane pore gas. After depressurizing samples to atmospheric pressure, we repressurized them into the methane-hydrate stability field and remeasured their physical properties. Thermal conductivity, shear strength, acoustic compressional and shear wave amplitudes and speeds are compared between the original and depressurized/repressurized samples. X-ray computed tomography (CT) images track how the gas-hydrate distribution changes in the hydrate-cemented sands due to the depressurization/repressurization process. Because depressurization-induced property changes can be substantial and are not easily predicted, particularly in water-saturated, hydrate-bearing sediment, maintaining pressure and temperature conditions throughout the core recovery and measurement process is critical for using laboratory measurements to estimate in situ properties.

Kneafsey, Timothy; Waite, W.F.; Kneafsey, T.J.; Winters, W.J.; Mason, D.H.

2008-06-01T23:59:59.000Z

72

Prototype Data Models and Data Dictionaries for Hanford Sediment Physical and Hydraulic Properties  

SciTech Connect (OSTI)

The Remediation Decision Support (RDS) project, managed by the Pacific Northwest National Laboratory (PNNL) for the U.S. Department of Energy (DOE) and the CH2M HILL Plateau Remediation Company (CHPRC), has been compiling physical and hydraulic property data and parameters to support risk analyses and waste management decisions at Hanford. In FY09 the RDS project developed a strategic plan for a physical and hydraulic property database. This report documents prototype data models and dictionaries for these properties and associated parameters. Physical properties and hydraulic parameters and their distributions are required for any type of quantitative assessment of risk and uncertainty associated with predictions of contaminant transport and fate in the subsurface. The central plateau of the Hanford Site in southeastern Washington State contains most of the contamination at the Site and has up to {approx}100 m of unsaturated and unconsolidated or semi-consolidated sediments overlying the unconfined aquifer. These sediments contain a wide variety of contaminants ranging from organic compounds, such as carbon tetrachloride, to numerous radionuclides including technetium, plutonium, and uranium. Knowledge of the physical and hydraulic properties of the sediments and their distributions is critical for quantitative assessment of the transport of these contaminants in the subsurface, for evaluation of long-term risks and uncertainty associated with model predictions of contaminant transport and fate, and for evaluating, designing, and operating remediation alternatives. One of the goals of PNNL's RDS project is to work with the Hanford Environmental Data Manager (currently with CHPRC) to develop a protocol and schedule for incorporation of physical property and hydraulic parameter datasets currently maintained by PNNL into HEIS. This requires that the data first be reviewed to ensure quality and consistency. New data models must then be developed for HEIS that are approved by the HTAG that oversees HEIS development. After approval, these new data models then need to be implemented in HEIS by the EDM before there is an actual repository for the data. This document summarizes modifications to previously developed data models, and new data models and data dictionaries for physical and hydraulic property data and parameters to be transferred to HEIS. A prototype dataset that conforms to the specifications of these recommended data models has been identified and processed, and is ready for transfer to CHPRC for inclusion in HEIS. Additional datasets are planned for transfer from PNNL to CHPRC in FY11.

Rockhold, Mark L.; Last, George V.; Middleton, Lisa A.

2010-09-30T23:59:59.000Z

73

Physical properties of kraft black liquor: Summary report, Phases 1 and 2  

SciTech Connect (OSTI)

Since 1981, a research program has been in progress to determine the physical properties of kraft black liquors and to develop methods for reduction of data and correlation of properties with pumping conditions. The basic premise that has been used to direct the research program is that kraft black liquor behaves as a polymer solution, particularly at high solids, and that the behavior is dominated by the characteristics of the lignin present. This premise is proving to be correct, and the principles that follow from this premise are proving to be successful for data reduction and correlation. The research has been a complex program involving experimental pulping, chemical analysis, lignin separation and characterization, thermal analysis, rheological measurements, and considerable equipment and methods development. Due to the complexity of the program, the unforeseen need to expend a great deal of effort in development of experimental techniques for analysis, and the fact that our liquors proved to be unstable at high temperatures and solids, all of the original objectives could not be accomplished. However, our program has added substantially to the body of knowledge of physical properties of black liquor. Our results indicate that the goal of developing correlations for physical properties of kraft black liquor is practical and can be realized through extension of the present work.

Fricke, A.L.

1987-09-01T23:59:59.000Z

74

A Physical Approach to the Identification of High-z Mergers: Morphological Classification in the Stellar Mass Domain  

E-Print Network [OSTI]

At z>1, the distinction between merging and 'normal' star-forming galaxies based on single band morphology is often hampered by the presence of large clumps which result in a disturbed, merger-like appearance even in rotationally supported disks. In this paper we discuss how a classification based on canonical, non-parametric structural indices measured on resolved stellar mass maps, rather than on single-band images, reduces the misclassification of clumpy but not merging galaxies. We calibrate the mass-based selection of mergers using the MIRAGE hydrodynamical numerical simulations of isolated and merging galaxies which span a stellar mass range of $10^{9.8}$-$10^{10.6}M_{sun}$ and merger ratios between 1:1-1:6.3. These simulations are processed to reproduce the typical depth and spatial resolution of observed HUDF data. We test our approach on a sample of real z~2 galaxies with kinematic classification into disks or mergers and on ~100 galaxies in the HUDF field with photometric/spectroscopic redshift betw...

Cibinel, Anna; Perret, Valentin; Bournaud, Frederic; Daddi, Emanuele; Pannella, Maurilio; Elbaz, David; Amram, Philippe; Duc, Pierre-Alain

2015-01-01T23:59:59.000Z

75

Aircraft Observations of Sub-cloud Aerosol and Convective Cloud Physical Properties  

E-Print Network [OSTI]

of Department, Kenneth Bowman December 2009 Major Subject: Atmospheric Sciences iii iii ABSTRACT Aircraft Observations of Sub-Cloud Aerosol and Convective Cloud Physical Properties. (December 2009) Duncan Axisa, B.Ed., University of Malta; B... but for vertical velocity (ms-1). Negative values are updraft and positive values are downdraft ........................................... 30 18 Cloud droplet size distribution (dN/dlogD, cm-3) for 1Hz cloud penetration data...

Axisa, Duncan

2011-02-22T23:59:59.000Z

76

Physical Properties of Niobium and Specifications for Fabrication of Superconducting Cavities  

SciTech Connect (OSTI)

It is important to distinguish among the properties of niobium, the ones that are related to the cavity's SRF performances, the formability of the material, and the mechanical behavior of the formed cavity. In general, the properties that dictate each of the above mentioned characteristics have a detrimental effect on one another and in order to preserve the superconducting properties without subduing the mechanical behavior, a balance has to be established. Depending on the applications, some parameters become less important and an understanding of the physical origin of the requirements might help in this optimization. SRF applications require high purity niobium (high RRR), but pure niobium is very soft from fabrication viewpoint. Moreover conventional fabrication techniques tend to override the effects of any metallurgical process meant to strengthen it. As those treatments dramatically affect the forming of the material they should be avoided. These unfavorable mechanical properties have to be accounted for in the design of the cavities rather than in the material specification. The aim of this paper is to review the significance of the important mechanical properties used to characterize niobium and to present the optimal range of values. Most of the following information deals with the specification of sheets for cell forming unless otherwise noted.

Antoine, C.; Foley, M.; Dhanaraj, N.; /Fermilab

2011-07-01T23:59:59.000Z

77

The curing of asphalt with rubber and its effect on the physical and chemical properties of asphalt-rubber binders  

E-Print Network [OSTI]

The objective of this research was to develop a potentially useful asphalt-rubber binder using the curing process. For the curing process, six parameters, which altered the physical and chemical properties of the asphalt-rubber binder, were tested...

Chun, Jay Sung

1995-01-01T23:59:59.000Z

78

Genetic and dietary effects on the physical properties, assembly and secretion of apoB-containing lipoproteins  

E-Print Network [OSTI]

profiles, the physical properties of lipoproteins in hamsters fed high-carbohydrate diets containing either 60% fructose or 60% cornstarch for 2 wk were studied. Fructose increased very low-density lipoprotein (VLDL) particle diameter and decreased low...

Wang, Limin

2005-11-01T23:59:59.000Z

79

Morphology and properties of a hybrid organic-inorganic system: Al nanoparticles embedded into CuPc thin film  

SciTech Connect (OSTI)

The evolution of the morphology and the electronic structure of the hybrid organic-inorganic system composed of aluminum nanoparticles (NPs) distributed in an organic semiconductor matrix—copper phthalocyanine (CuPc)—as a function of nominal aluminum content was studied by transmission electron microscopy and by photoemission spectroscopy methods. The aluminum atoms deposited onto the CuPc surface diffuse into the organic matrix and self-assemble to NPs in a well-defined manner with a narrow diameter distribution, which depends on the amount of aluminum that is evaporated onto the CuPc film. We find clear evidence of a charge transfer from Al to CuPc and we have been able to determine the lattice sites where Al ions sit. The finally at high coverage about 64?Å the formation of metallic aluminum overlayer on CuPc thin film takes place.

Molodtsova, O. V.; Babenkov, S. V. [Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg (Germany); Aristova, I. M. [Institute of Solid State Physics of Russian Academy of Sciences, Chernogolovka 142432 (Russian Federation); Vilkov, O. V. [Helmholtz-Zentrum Berlin (HZB) für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin (Germany); Aristov, V. Yu., E-mail: aristov@issp.ac.ru [Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg (Germany); Institute of Solid State Physics of Russian Academy of Sciences, Chernogolovka 142432 (Russian Federation); Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, D-20355 Hamburg (Germany)

2014-04-28T23:59:59.000Z

80

A comparison of the physical and chemical properties of asbestos, mineral wool and fibrous glass insulation material  

E-Print Network [OSTI]

A COMPARISON OF THE PHYSICAL AND CHEMICAL PROPERTIES OF ASBESTOS, MINERAL WOOL AND FIBROUS GLASS INSULATION MATERIAL A Thesis by MICHAEL GALEN COWAN Submitted to the Graduate College of Texas AMi University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE May 1984 Major Subject: Industrial Hygiene A COMPARISON OF THE PHYSICAL AND CHEMICAL PROPERTIES OF ASBESTOS, MINERAL WOOL AND FIBROUS GLASS INSULATION MATERIAL A Thesis by MICHAEL GALEN COWAN Approved...

Cowan, Michael Galen

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Effects of conservation tillage and conventional tillage on selected physical and chemical properties of a Blackland Praire soil in Texas  

E-Print Network [OSTI]

EFFECTS OF CONSERVATION TILLAGE AND CONVENTIONAL TILLAGE ON SELECTED PHYSICAL AND CHEMICAL PROPERTIES OF A BLACKLAND PRAIRIE SOIL IN TEXAS A Thesis By WELHELMUS ISAK IMANUEL MELLA Submitted to the Office of Graduate Studies of Texas ASM... University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1991 Major Subject: Agronomy EFFECTS OF CONSERVATION TILLAGE AND CONVENTIONAL TILLAGE ON SELECTED PHYSICAL AND CHEMICAL PROPERTIES OF A BLACKLAND PRAIRIE...

Mella, Welhelmus Isak Imanuel

1991-01-01T23:59:59.000Z

82

Effect of tillage systems, row configuration-spacing and plant population on soil physical properties, evapotranspiration and dryland sorghum yields  

E-Print Network [OSTI]

University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1981 Major Subject: Soil Science EFFECT OF TILLAGE SYSTEMS, ROW CONFIGURATION-SPACING AND PLANT POPULATION ON SOIL PHYSICAL PROPERTIES& EVAPOTRANSPIRATION... Configuration-Spacing and Plant. Popular. ion on Soil Physical Properties, Evapotranspiration and Dryland Sorghum Yields. (December 1981). Jaime Roel Salinas-Garcfa, B. S. , Universidad Autdnoma de Nuevo Leon, Mexico. Co-Chairmen of Advisory Committee: Dr...

Salinas-Garcia, Jaime Roel

1981-01-01T23:59:59.000Z

83

Areal distribution of clay minerals and their relationship to physical properties, Gulf of Mexico  

E-Print Network [OSTI]

of the first major works examining physical properties of Gulf of Mexico sediments was by Fisk and McCle lland (1959). They dis- cussed the influence of the geology of the Louisiana continental shelf on offshore foundation design, They showed that foundation... of the variation in shear strength can be attributed to either depth in core or to a change in water content. Bouma et a!. (1972) showed the importance of geo- technical investigation through their comparison of geological and engineering parameters of marine...

Hottman, William Edward

1975-01-01T23:59:59.000Z

84

Electrophoretic and physical properties of N-acetyl-†-D hexosaminidase in normal swine tissues  

E-Print Network [OSTI]

ELECTROPHORETIC AND PHYSICAL PROPERTIES OF N-ACETYL-B-D HEXOSAMINIDASE IN NORMAL SWINE TISSUES A Thesis by JOAN ELIZABETH BARTON Subm1tted to the Graduate College of Texas A 5 M University 1n Partial fulfillment of the requirement.... The third band (aa)2 m1grated rapidly toward the anode, and was a very lab1le isozyme. The pH optimum was found with1n a pH range of 5. 0 to 5. 5 in fresh tissues and PH 4. 5 to 5. 0 in frozen t1ssues. The PH oPtimum in fibro blasts was 1n a range of p...

Barton, Joan Elizabeth

1979-01-01T23:59:59.000Z

85

Physical properties of BeAl{sub 6}O{sub 10} single crystals  

SciTech Connect (OSTI)

Single crystals of BeAl{sub 6}O{sub 10}, beryllium hexaaluminate, were grown by the Czochralski method. The optical, acousto-optical, elastic, and a number of thermo-mechanical properties of bulk crystals of BeAl{sub 6}O{sub 10} were investigated in comparison with crystal of BeAl{sub 2}O{sub 4}, chrysoberyl. It has been demonstrated that this material is the promising host for active media of tunable solid state lasers. {copyright} {ital 1997 American Institute of Physics.}

Pestryakov, E.V.; Petrov, V.V.; Zubrinov, I.I.; Semenov, V.I.; Trunov, V.I.; Kirpichnikov, A.V. [Department of Quantum Electronics, Institute of Semiconductor Physics, Novosibirsk 630090 (Russia)] [Department of Quantum Electronics, Institute of Semiconductor Physics, Novosibirsk 630090 (Russia); Alimpiev, A.I. [Design and Technological Institute of Monocrystals, Novosibirsk 630058 (Russia)] [Design and Technological Institute of Monocrystals, Novosibirsk 630058 (Russia)

1997-10-01T23:59:59.000Z

86

Survey of physical property data for several alloys. [Nitronic 33; copper C10400; copper C17510  

SciTech Connect (OSTI)

This report summarizes an examination of physical property data available in the literature for six alloys of potential interest to the Toroidal Fusion Core Experiment in the Fusion Energy Program. The properties of thermal expansion, density, specific heat, electrical resistivity, and thermal conductivity were compiled for six alloys: Nitronic 33, a low-nickel, high manganese stainless steel; nickel-base Inconnel Alloys 625, 718, and X-750; and copper alloys C10400 and C17510. The temperatures of interest were 4-500 K for the Nitronic 33 and the Inconels, and 250-400 K for the copper alloys. Where data were lacking, estimates were made based on theory or comparisons with similar materials.

Pawel, R.E.; Williams, R.K.

1985-08-01T23:59:59.000Z

87

Status of Initial Assessment of Physical and Mechanical Properties of Graphite Grades for NGNP Appkications  

SciTech Connect (OSTI)

Current candidate graphite grades for the core structures of NGNP include grades NBG-17, NBG-18, PCEA and IG-430. Both NBG-17 and NBG-18 are manufactured using pitch coke, and are vibrationally molded. These medium grain products are produced by SGL Carbon SAS (France). Tayo Tanso (Japan) produces IG-430 which is a petroleum coke, isostatically molded, nuclear grade graphite. And PCEA is a medium grain, extruded graphite produced by UCAR Carbon Co. (USA) from petroleum coke. An experimental program has been initiated to develop physical and mechanical properties data for these current candidate graphites. The results will be judged against the requirements for nuclear grade graphites set forth in ASTM standard D 7219-05 "Standard Specification for Isotropic and Near-isotropic Nuclear Graphites". Physical properties data including thermal conductivity and coefficient of thermal expansion, and mechanical properties data including tensile, compressive and flexural strengths will be obtained using the established test methods covered in D-7219 and ASTM C 781-02 "Standard Practice for Testing Graphite and Boronated Graphite Components for High-Temperature Gas-Cooled Nuclear Reactors". Various factors known to effect the properties of graphites will be investigated. These include specimen size, spatial location within a graphite billet, specimen orientation (ag and wg) within a billet, and billet-to-billet variations. The current status of the materials characterization program is reported herein. To date billets of the four graphite grades have been procured, and detailed cut up plans for obtaining the various specimens have been prepared. Particular attention has been given to the traceability of each specimen to its spatial location and orientation within a billet.

Strizak, Joe P [ORNL; Burchell, Timothy D [ORNL; Windes, Will [Idaho National Laboratory (INL)

2011-12-01T23:59:59.000Z

88

Effect of Mn doping on the structural, morphological, optical...  

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

Mn doping on the structural, morphological, optical and magnetic properties of indium tin oxide films. Effect of Mn doping on the structural, morphological, optical and magnetic...

89

Variation of the shape and morphological properties of silica and metal oxide powders by electro homogeneous precipitation  

DOE Patents [OSTI]

The present invention provides a method for preparing irreversible linear aggregates (fibrils) of metal oxide powders by utilizing static or pulsed DC electrical fields across a relatively non-conducting liquid solvent in which organometal compounds or silicon alkoxides have been dissolved. The electric field is applied to the relatively non-conducting solution throughout the particle formation and growth process promoting the formation of either linear aggregates (fibrils) or spherical shaped particles as desired. Thus the present invention provides a physical method for altering the size, shape and porosity of precursor hydrous metal oxide or hydrous silicon oxide powders for the development of advanced ceramics with improved strength and insulating capacity.

Harris, Michael T. (Knoxville, TN); Basaran, Osman A. (Oak Ridge, TN); Sisson, Warren G. (Oak Ridge, TN); Brunson, Ronald R. (Lenoir City, TN)

1997-01-01T23:59:59.000Z

90

Variation of the shape and morphological properties of silica and metal oxide powders by electro homogeneous precipitation  

DOE Patents [OSTI]

The present invention provides a method for preparing irreversible linear aggregates (fibrils) of metal oxide powders by utilizing static or pulsed DC electrical fields across a relatively non-conducting liquid solvent in which organometal compounds or silicon alkoxides have been dissolved. The electric field is applied to the relatively non-conducting solution throughout the particle formation and growth process promoting the formation of either linear aggregates (fibrils) or spherical shaped particles as desired. Thus the present invention provides a physical method for altering the size, shape and porosity of precursor hydrous metal oxide or hydrous silicon oxide powders for the development of advanced ceramics with improved strength and insulating capacity. 3 figs.

Harris, M.T.; Basaran, O.A.; Sisson, W.G.; Brunson, R.R.

1997-02-18T23:59:59.000Z

91

Effect of reductant and PVP on morphology and magnetic property of ultrafine Ni powders prepared via hydrothermal route  

SciTech Connect (OSTI)

Graphical abstract: The ultrafine Ni powders with the shapes including sphere, pearl-string, leaf, fish-bone, hexagonal sheet and silknet were prepared through one-step hydrothermal reduction using different reductants. Their saturation magnetization, remanent magnetization and coercivity sequentially increase, and the coercivity of hexagonal sheet-like Ni powders increases by 25% compared with the Ni bulk counterpart. - Highlights: • The ultrafine Ni powders with various shapes of sphere, fish-bone, hexagonal sheet, etc. • Facile and one-step hydrothermal reduction using three reductants and PVP additive was developed. • Magnetic properties of the ultrafine Ni powders with different shapes were measured. • Compared with bulk Ni material, coercivity of hexagonal sheet Ni increases by 25%. • The formation mechanism of the shapes was suggested. - Abstract: The ultrafine nickel particles with different shapes including sphere, pearl-string, leaf, fish-bone, hexagonal sheet and silknet were prepared through one-step hydrothermal reduction using hydrazine hydrate, sodium hypophosphite and ethylene glycol as reductants, polyvinylpyrrolidone as structure-directing agent. It has been verified with the characterization of X-ray powder diffraction and transmission/scanning electronic microscopy that as-prepared products belong to face-centered cubic structure of nickel microcrystals with high purity and fine dispersity. The magnetic hysteresis loops measured at room temperature reveal that the values of saturation magnetization, remanent magnetization and coercivity rise sequentially from silknet, sphere to hexagonal sheet. In comparison with nickel bulk counterpart, the coercivity of the hexagonal sheet nickel powders increases by 25%.

Zhang, Jun, E-mail: j-zhang@126.com; Wang, Xiucai; Li, Lili; Li, Chengxuan; Peng, Shuge

2013-10-15T23:59:59.000Z

92

Methods and apparatus for moving and separating materials exhibiting different physical properties  

DOE Patents [OSTI]

Methods and apparatus for controlling the movement of materials having different physical properties when one of the materials is a fluid. The invention does not rely on flocculation, sedimentation, centrifugation, the buoyancy of the materials, or any other gravity dependent characteristic, in order to achieve its desired results. The methods of the present invention provide that a first acoustic wave is progpagated through a vessel containing the materials. A second acoustic wave, at a frequency different than the first acoustic wave, is also propagated through the vessel so that the two acoustic waves are superimposed upon each other. The superimposition of the two waves creates a beat frequency wave. The beat frequency wave comprises pressure gradients dividing regions of maximum and minimum pressure. The pressure gradients and the regions of maximum and minimum pressure move through space and time at a group velocity. The moving pressure gradients and regions of maximum and minimum pressure act upon the marterials so as to move one of the materials towards a predetermined location in the vessel. The present invention provides that the materials may be controllably moved toward a location, aggreated at a particular location, or physically separated from each other.

Peterson, Stephen C. (Salt Lake City, UT); Brimhall, Owen D. (Salt Lake City, UT); McLaughlin, Thomas J. (Salt Lake City, UT); Baker, Charles D. (Lehi, UT); Sparks, Sam L. (Alpine, UT)

1988-01-01T23:59:59.000Z

93

Methods and apparatus for moving and separating materials exhibiting different physical properties  

DOE Patents [OSTI]

Methods and apparatus for controlling the movement of materials having different physical properties when one of the materials is a fluid. The invention does not rely on flocculation, sedimentation, centrifugation, the buoyancy of the materials, or any other gravity dependent characteristic, in order to achieve its desired results. The methods of the present invention provide that a first acoustic wave is propagated through a vessel containing the materials. A second acoustic wave, at a frequency different than the first acoustic wave, is also propagated through the vessel so that the two acoustic waves are superimposed upon each other. The superimposition of the two waves creates a beat frequency wave. The beat frequency wave comprises pressure gradients dividing regions of maximum and minimum pressure. The pressure gradients and the regions of maximum and minimum pressure move through space and time at a group velocity. The moving pressure gradients and regions of maximum and minimum pressure act upon the materials so as to move one of the materials towards a predetermined location in the vessel. The present invention provides that the materials may be controllably moved toward a location, aggregated at a particular location, or physically separated from each other.

Peterson, Stephen C. (al of Salt Lake City, UT); Brimhall, Owen D. (al of Salt Lake City, UT); McLaughlin, Thomas J. (al of Salt Lake City, UT); Baker, Charles D. (Lehi, UT); Sparks, Sam L. (Alpine, UT)

1991-01-01T23:59:59.000Z

94

A Long-Term Strategic Plan for Hanford Sediment Physical Property and Vadose Zone Hydraulic Parameter Databases  

SciTech Connect (OSTI)

Physical property data and unsaturated hydraulic parameters are critical input for analytic and numerical models used to predict transport and fate of contaminants in variably saturated porous media and to assess and execute remediation alternatives. The Remediation Decision Support (RDS) project, managed by the Pacific Northwest National Laboratory (PNNL) for the U.S. Department of Energy (DOE) and the CH2M Hill Plateau Remediation Company (CHPRC), has been compiling physical and hydraulic property data and parameters to support risk analyses and waste management decisions at Hanford. Efforts have been initiated to transfer sediment physical property data and vadose zone hydraulic parameters to CHPRC for inclusion in HEIS-Geo, a new instance of the Hanford Environmental Information System database that is being developed for borehole geologic data. This report describes these efforts and a strategic plan for continued updating and improvement of these datasets.

Rockhold, Mark L.; Last, George V.; Middleton, Lisa A.

2009-09-30T23:59:59.000Z

95

Simulating the physical properties of dark matter and gas inside the cosmic web  

E-Print Network [OSTI]

Using the results of a high-resolution, cosmological hydrodynamical re-simulation of a supercluster-like region we investigate the physical properties of the gas located along the filaments and bridges which constitute the so-called cosmic web. First we analyze the main characteristics of the density, temperature and velocity fields, which have quite different distributions, reflecting the complex dynamics of the structure formation process. Then we quantify the signals which originate from the matter in the filaments by considering different observables. Inside the cosmic web, we find that the halo density is about 4-6 times larger than in the neighbouring region; the bremsstrahlung X-ray surface brightness reaches at most 10e-16 erg/s/cm^2/armin^2; the Compton-y parameter due to the thermal Sunyaev-Zel'dovich effect is about 10e-6; the reduced shear produced by the weak lensing effect is ~ 0.01-0.02. These results confirm the difficulty of an observational detection of the cosmic web. Finally we find that projection effects of the filamentary network can affect the estimates of the properties of single clusters, increasing their X-ray luminosity by less than 10% and their central Compton-y parameter by up to 30% cent.

K. Dolag; M. Meneghetti; L. Moscardini; E. Rasia; A. Bonaldi

2006-05-05T23:59:59.000Z

96

Electrode Materials with the Na0.44MnO2 Structure: Effect ofTitanium Substitution on Physical and Electrochemical Properties  

SciTech Connect (OSTI)

The physical and electrochemical properties of LixMnO2 and LixTi0.11Mn0.89O2 synthesized from precursors made by glycine-nitrate combustion (GNC) and solid-state synthesis methods (SS) are examined in this paper. The highest specific capacities in lithium cells are obtained for SS-LixMnO2 electrodes at low current densities, but GNC-LixTi0.11Mn0.89O2 electrodes show the best high rate performance. These results can be explained by changes in the voltage characteristics and differences in the particle morphologies induced by the Ti-substitution and synthesis method. Ti-substitution also results in a decrease in the electronic conductivity, but greatly improves the thermal properties and imparts dissolution resistance to the electrode. For these reasons, it is preferable to use LixTi0.11MnO0.89O2 in lithium battery configurations rather than LixMnO2. Suggestions for improving the electrochemical performance of the Ti-substituted variant are given based on the results described herein.

Doeff, Marca M; Saint, Juliette A.; Doeff, Marca M; Wilcox, James D.

2008-03-10T23:59:59.000Z

97

The application of size- resolved hygroscopicity measurements to understand the physical and chemical properties of ambient aerosol  

E-Print Network [OSTI]

THE APPLICATION OF SIZE-RESOLVED HYGROSCOPICITY MEASUREMENTS TO UNDERSTANDING THE PHYSICAL AND CHEMICAL PROPERTIES OF AMBIENT AEROSOL A Dissertation by JOSHUA L. SANTARPIA Submitted to the Office of Graduate Studies of Texas A... AND CHEMICAL PROPERTIES OF AMBIENT AEROSOL A Dissertation by JOSHUA L. SANTARPIA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved...

Santarpia, Joshua Lee

2005-08-29T23:59:59.000Z

98

Molecular modeling of the morphology and transport properties of two direct methanol fuel cell membranes: phenylated sulfonated poly(ether ether ketone ketone) versus Nafion  

SciTech Connect (OSTI)

We have used molecular dynamics simulations to examine membrane morphology and the transport of water, methanol and hydronium in phenylated sulfonated poly ether ether ketone ketone (Ph-SPEEKK) and Nafion membranes at 360 K for a range of hydration levels. At comparable hydration levels, the pore diameter is smaller, the sulfonate groups are more closely packed, the hydronium ions are more strongly bound to sulfonate groups, and the diffusion of water and hydronium is slower in Ph-SPEEKK relative to the corresponding properties in Nafion. The aromatic carbon backbone of Ph-SPEEKK is less hydrophobic than the fluorocarbon backbone of Nafion. Water network percolation occurs at a hydration level ({lambda}) of {approx}8 H{sub 2}O/SO{sub 3}{sup -}. At {lambda} = 20, water, methanol and hydronium diffusion coefficients were 1.4 x 10{sup -5}, 0.6 x 10{sup -5} and 0.2 x 10{sup -5} cm{sup 2}/s, respectively. The pore network in Ph-SPEEKK evolves dynamically and develops wide pores for {lambda} > 20, which leads to a jump in methanol crossover and ion transport. This study demonstrates the potential of aromatic membranes as low-cost challengers to Nafion for direct methanol fuel cell applications and the need to develop innovative strategies to combat methanol crossover at high hydration levels.

Devanathan, Ramaswami; Idupulapati, Nagesh B.; Dupuis, Michel

2012-08-14T23:59:59.000Z

99

Mo{sub 5}Si{sub 3} single crystals: Physical properties and mechanical behavior  

SciTech Connect (OSTI)

The materials processing, physical properties and mechanical behavior of an ultra-high temperature structural silicide, Mo{sub 5}Si{sub 3}, have been studied. High purity single crystals of Mo{sub 5}Si{sub 3} have been synthesized by both optical floating zone and Czochralski methods. The thermal and elastic properties of the MO{sub 5}Si{sub 3} single crystals were experimentally measured. Results show that Mo{sub 5}Si{sub 3} has significant thermal expansion anisotropy along the a and c directions with {alpha}{sub c}/{alpha}{sub a} = 2.2. Single crystal elastic moduli of Mo{sub 5}Si{sub 3} indicate that it has less elastic anisotropy and lower shear moduli than transition metal disilicides. Tensile stresses of up to 1.8 GPa can develop at grain boundaries after cooling from the melting point due to the thermal expansion mismatch in Mo{sub 5}Si{sub 3}, causing grain boundary cracking during processing of polycrystals. Room temperature Vickers indentation tests on (100) and (001) planes have been performed with different indenter diagonal orientations. The orientation dependence of hardness and fracture toughness of Mo{sub 5}Si{sub 3} single crystals have been obtained. The corresponding deformation and fracture modes have been revealed by microscopy studies. A comparison of Mo{sub 5}Si{sub 3} with other high temperature structural silicides, e.g., C11{sub b} and C40 transition metal disilicides, is discussed.

Chu, F.; Thoma, D.J.; McClellan, K.J.; Peralta, P.

1998-12-01T23:59:59.000Z

100

Physical and magnetic properties of highly aluminum doped strontium ferrite nanoparticles prepared by auto-combustion route  

E-Print Network [OSTI]

Physical and magnetic properties of highly aluminum doped strontium ferrite nanoparticles prepared-Hexaferrite Al doped Sr-Ferrite High Coercivity Ferrite a b s t r a c t Highly Al3þ ion doped nanocrystalline Sr microscope show growth of needle shaped ferrites with high aspect ratio at Al3þ ion content exceeding xZ2. Al

Liu, J. Ping

Note: This page contains sample records for the topic "morphology physical properties" 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

y Vacuum Polarization in Low Energy Physics: g -2 1. g -2 introduction, history, muon properties, lepton moments  

E-Print Network [OSTI]

y Vacuum Polarization in Low Energy Physics: g - 2 1. g - 2 introduction, history, muon properties ; F2(0) = aµ aµ responsible for the Larmor precession directly proportional at magic energy 3.1 Ge theory at tree level aµ is a pure "quantum correction" effect: a finite model-specific prediction in any

Röder, Beate

102

Materials Science and Engineering A261 (1999) 4452 Mo5Si3 single crystals: physical properties and mechanical behavior  

E-Print Network [OSTI]

. Among these phases, refractory metal silicides appear to be more attractive because of their ultra-high melting temperatures [1]. Among the refractory metal silicides, the silicides in the Mo­Si system show processing, physical properties and mechanical behavior of an ultrahigh temperature structural silicide, Mo5

103

Physics of the Earth and Planetary Interiors 126 (2001) 93108 Rock-magnetic properties of TRM carrying baked and  

E-Print Network [OSTI]

Physics of the Earth and Planetary Interiors 126 (2001) 93­108 Rock-magnetic properties of TRM produced large areas of thermally altered sedimentary rocks with large magnetic moments. The natural remanent magnetization (NRM) and thermoremanent magnetization (TRM) intensities and low

Utrecht, Universiteit

2001-01-01T23:59:59.000Z

104

46.1 Shear Viscosity An important mechanical property of fluids is viscosity. Physical systems and applications as diverse as  

E-Print Network [OSTI]

46-1 46.1 Shear Viscosity An important mechanical property of fluids is viscosity. Physical systems, the internal friction of a fluid is analogous to the macroscopic mechanical friction, which causes an object. Kostic Northern Illinois University #12;46-2 Mechanical Variables top plate causes the fluid adjacent

Kostic, Milivoje M.

105

PHYSICAL REVIEW B 84, 054206 (2011) Elastic properties of Ca-based metallic glasses predicted by first-principles simulations  

E-Print Network [OSTI]

are favorable for potential applications in the transportation and aerospace industries. Ca-based alloy systems brittle. Improving their ductility is necessary for the alloy to be usable. Some guidelines in approaching,10 The ultimate level of realism, with high sensitivity to the specific chemical natures and physical properties

Widom, Michael

106

Medical Engineering & Physics 27 (2005) 884892 Non-linear elastic properties of the lingual and facial tissues  

E-Print Network [OSTI]

the auditory and visual human perception systems use knowledge about the physical properties of the speech Abstract This paper aims at characterizing the mechanical behavior of two human anatomical structures biomechanical model of the human tongue. This dynamical model was designed to study speech production. Given

Payan, Yohan

107

Environ. Sci. Technol. 1988, 22, 651-658 Physical-Chemical Properties of Chlorinated Dibenzo-p-dioxins  

E-Print Network [OSTI]

Environ. Sci. Technol. 1988, 22, 651-658 Physical-Chemical Properties of Chlorinated Dibenzo-p-dioxins assessment purposes. ~~~ ~ Introduction The polychlorinated dibenzo-p-dioxins (PCDDs) are a group of 75 about PCDD tox- icity and exposure are required. Several dioxin congeners have been shown

Gobas, Frank

108

PHYSICAL REVIEW E 88, 042146 (2013) Uncovering wind turbine properties through two-dimensional stochastic modeling of wind dynamics  

E-Print Network [OSTI]

PHYSICAL REVIEW E 88, 042146 (2013) Uncovering wind turbine properties through two, such as the rated speed of the wind turbine or the descriptive wind speed statistics, can be related to the equations describing the evolution of power production and wind speed at single wind turbines. DOI: 10

Peinke, Joachim

109

Effect of biomass feedstock chemical and physical properties on energy conversion processes: Volume 2, Appendices  

SciTech Connect (OSTI)

This report presents an exploration of the relationships between biomass feedstocks and the conversion processes that utilize them. Specifically, it discusses the effect of the physical and chemical structure of biomass on conversion yields, rates, and efficiencies in a wide variety of available or experimental conversion processes. A greater understanding of the complex relationships between these conversion systems and the production of biomass for energy uses is required to help optimize the complex network of biomass production, collection, transportation, and conversion to useful energy products. The review of the literature confirmed the scarcity of research aimed specifically at identifying the effect of feedstock properties on conversion. In most cases, any mention of feedstock-related effects was limited to a few brief remarks (usually in qualitative terms) in the conclusions, or as a topic for further research. Attempts to determine the importance of feedstock parameters from published data were further hampered by the lack of consistent feedstock characterization and the difficulty of comparing results between different experimental systems. Further research will be required to establish quantitative relationships between feedstocks and performance criteria in conversion. 127 refs., 4 figs., 7 tabs.

Butner, R.S.; Elliott, D.C.; Sealock, L.J., Jr.; Pyne, J.W.

1988-12-01T23:59:59.000Z

110

Geochemical and physical properties of soils and shallow sediments at the Savannah River Site  

SciTech Connect (OSTI)

A program to characterize the geochemical and physical properties of the unimpacted soils and shallow sediments at the Savannah River Site (SRS) has been completed. The maximum, minimum, median, standard deviation, and mean values for metals, radionuclides, inorganic anions, organic compounds, and agricultural indicator parameters are summarized for six soil series that were identified as representative of the 29 soil series at SRS. The soils from unimpacted areas of SRS are typical of soils found in moderately aggressive weathering environments, including the southeastern United States. Appendix 8 organic compounds were detected in all samples. Since these constituents are not generally present in soil, this portion of the investigation was intended to assess possible laboratory artifacts. An additional objective of the SRS Soil Study was to determine if the composition of the split spoon sampler biased chemical analysis of the soils. Twenty-five duplicate samples were analyzed for a number of metals, radiological and agricultural parameters, and organics by two laboratories currently contracted with to analyze samples during waste site characterization. In all cases, the absolute values of the average differences are relatively small compared to the overall variability in the population. 31 refs., 14 figs., 48 tabs.

Looney, B.B.; Eddy, C.A.; Ramdeen, M.; Pickett, J. (Savannah River Lab., Aiken, SC (USA)); Rogers, V. (Soil Conservation Service, Aiken, SC (USA). Savannah River Site Savannah River Lab., Aiken, SC (USA)); Scott, M.T.; Shirley, P.A. (Sirrine Environmental Consultants, Greenville, SC (USA))

1990-08-31T23:59:59.000Z

111

Gamma Radiation Effects on Physical, Optical, and Structural Properties of Binary As-S glasses  

SciTech Connect (OSTI)

Gamma radiation induces changes in physical, optical, and structural properties in chalcogenide glasses., Previous research has focused on As{sub 2}S{sub 3} and families of glasses containing Ge. For the first time, we present composition and dose dependent data on the As-S binary glass series. Binary As{sub x}S{sub 100-x} (x = 30, 33, 36, 40, and 42) glasses were irradiated with gamma radiation using a {sup 60}Co source at 2.8 Gy/s to accumulated doses of 1, 2, 3, and 4 MGy. The irradiated samples were characterized at each dose level for density, refractive index, x-ray diffraction, and Raman spectrum. These results are compared to those of as-made and 1 year aged samples. We report an initial increase in density followed by a decrease as a function of dose that contradicts the expected compositional dependence of molar volume of these glasses. This unusual behavior is explained based on microvoid formation and nanoscale phase-separation induced by the irradiation in these glasses. XRD, Raman, and EPR data provide supporting evidence, underscoring the importance of optimally- or overly-constrained structures for stability under aging or irradiation.

Sundaram, S. K.; McCloy, John S.; Riley, Brian J.; Murphy, Mark K.; Qiao, Hong (Amy) [Amy; Windisch, Charles F.; Walter, Eric D.; Crum, Jarrod V.; Golovchak, Roman; Shpotyuk, O.

2012-03-01T23:59:59.000Z

112

Physics  

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 RegionatSearch Welcome to theNews & Blog »Physics Physics Print Because

113

Physics  

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

Physics A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A'Hearn, Michael F. - Department of Astronomy, University of Maryland at College Park Aalberts, Daniel P. - Department...

114

Caustic-Side Solvent Extraction: Chemical and Physical Properties of the Optimized Solvent  

SciTech Connect (OSTI)

This work was undertaken to optimize the solvent used in the Caustic Side Solvent Extraction (CSSX) process and to measure key chemical and physical properties related to its performance in the removal of cesium from the alkaline high-level salt waste stored in tanks at the Savannah River Site. The need to adjust the solvent composition arose from the prior discovery that the previous baseline solvent was supersaturated with respect to the calixarene extractant. The following solvent-component concentrations in Isopar{reg_sign} L diluent are recommended: 0.007 M calix[4]arene-bis(tert-octylbenzo-crown-6) (BOBCalixC6) extractant, 0.75 M 1-(2,2,3,3-tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol (Cs-7SB) phase modifier, and 0.003 M tri-n-octylamine (TOA) stripping aid. Criteria for this selection included BOBCalixC6 solubility, batch cesium distribution ratios (D{sub Cs}), calculated flowsheet robustness, third-phase formation, coalescence rate (dispersion numbers), and solvent density. Although minor compromises within acceptable limits were made in flowsheet robustness and solvent density, significant benefits were gained in lower risk of third-phase formation and lower solvent cost. Data are also reported for the optimized solvent regarding the temperature dependence of D{sub Cs} in extraction, scrubbing, and stripping (ESS); ESS performance on recycle; partitioning of BOBCalixC6, Cs-7SB, and TOA to aqueous process solutions; partitioning of organic anions; distribution of metals; solvent phase separation at low temperatures; solvent stability to elevated temperatures; and solvent density and viscosity. Overall, the technical risk of the CSSX process has been reduced by resolving previously identified issues and raising no new issues.

Delmau, L.H.

2002-10-08T23:59:59.000Z

115

Optical, physical, and chemical properties of springtime aerosol over Barrow Alaska in 2008  

SciTech Connect (OSTI)

Airborne observations from four flights during the 2008 Indirect and Semi-Direct Aerosol Campaign (ISDAC) are used to examine some cloud-free optical, physical, and chemical properties of aerosol particles in the springtime Arctic troposphere. The number concentrations of particles larger than 0.12 ?m (Na>120), important for light extinction and cloud droplet formation, ranged from 15 to 2260 cm?3, with the higher Na>120 cases dominated by measurements from two flights of long-range transported biomass burning (BB) aerosols. The two other flights examined here document a relatively clean aerosol and an Arctic Haze aerosol impacted by larger particles largely composed of dust. For observations from the cleaner case and the BB cases, the particle light scattering coefficients at low relative humidity (RH<20%) increased nonlinearly with increasing Na>120, driven mostly by an increase in mean sizes of particles with increasing Na>120 (BB cases). For those three cases, particle light absorption coefficients also increased nonlinearly with increasing Na>120 and linearly with increasing submicron particle volume concentration. In addition to black carbon, brown carbon was estimated to have increased light absorption coefficients by 27% (450 nm wavelength) and 14% (550 nm) in the BB cases. For the case with strong dust influence, the absorption relative to submicron particle volume was small compared with the other cases. There was a slight gradient of Passive Cavity Aerosol Spectrometer Probe (PCASP) mean volume diameter (MVD) towards smaller sizes with increasing height, which suggests more scavenging of the more elevated particles, consistent with a typically longer lifetime of particles higher in the atmosphere. However, in approximately 10% of the cases, the MVD increased (>0.4 ?m) with increasing altitude, suggesting transport of larger fine particle mass (possibly coarse particle mass) at high levels over the Arctic. This may be because of transport of larger particles at higher elevations and relatively slow deposition to the surface.

Shantz, Nicole C.; Gultepe, Ismail; Andrews, Elisabeth; Zelenyuk, Alla; Earle, Michael; MacDonald, A. M.; Liu, Peter S.; Leaitch, W. R.

2014-03-06T23:59:59.000Z

116

Vertical distribution of sclerotia of Phymatotrichum omnivorum (Shear) Duggar relative to soil chemical and physical properties  

E-Print Network [OSTI]

) and areas containing green plants (G) near San Benito, Texas 4 Properties of Laredo silty clay loam collected from areas containing dead plants (D) and areas containing green plants (G) near San Benito, Texas 5 Properties of Victoria series soil... Raymondville, Texas 7 Properties of Victoria series soil collected from areas containing dead plants (D) and areas containing green plants (G) near Raymondvi lie, Texas . 8 Properties of Victoria clay collected from areas containing dead plants (D...

Gerik, James Stephen

1979-01-01T23:59:59.000Z

117

Physics  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006Photovoltaic Theory and Modeling Los AlamosAerosol.Physics

118

Physics  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar Home Design Passive SolarCenter |Photoinduced2Zoe Martin'sPhysics Print

119

Some physical and biological properties of the nuclear polyhedrosis virus of Heliothis zea (Boddie) and Heliothis virescens (Fabricius)  

E-Print Network [OSTI]

University Directed by: Dr. L. L. Keeley Laboratory investi ations were conducted into so ie of the physical and biological properties of the nuclear polyhedrosis virus ("!PV) of Heliothis zea (Boddie) and Peiiothi s virescens (Fabricius). information... the ranges of shapes and. sizes reported f' or other insect nuclear viruses. In contrast, the strength of alkali and dis- solving period necessary to dissolve Heliothis nuclear polyhedra are somewhat higher than those reported for other insect polyhedra...

MacFarlane, Johnny James

1969-01-01T23:59:59.000Z

120

A comprehensive program to develop correlations for the physical properties of Kraft black liquor. Interim report No. 3  

SciTech Connect (OSTI)

The black liquor properties program has been conducted over this last period so as to systematically collect data on properties, liquor composition, and lignin characteristics very carefully by methods that have developed during this program. Complete data has been collected for Slash Pine black liquors made by experimental pulping at different pulping conditions. In addition, data has been collected for mill liquors and partial properties or composition data has been collected on Slash Pine black liquors. Data reduction methods have been developed or extended for correlation of viscosity, heat capacity, heat of dilution, and density. Correlation of properties to pulping conditions and of composition to. pulping conditions has begun. In most cases, data reduction methods have been developed that are fundamentally based and that have been shown to be generally applicable to all black liquors. In the near future, we fully expect to accomplish our goal of developing generalized correlations relating physical properties of Slash Pine kraft black liquors to liquor composition. This interim report reviews the methods used, describes examples of data reduction methods that have been developed, and presents some preliminary results for correlation of liquor composition and properties to pulping conditions for Slash Pine black liquors.

Fricke, A.L.; Dong, D.J.; Schmidl, G.W.; Stoy, M.A.; Zaman, A.A.

1993-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Physical properties of erbium implanted tungsten oxide films deposited by reactive dual magnetron sputtering  

E-Print Network [OSTI]

Handbook of Inorganic Electrochromic Materials. Amsterdam:electrodes in electrochromic devices [4]. Particularly,optical, electrical and electrochromic properties [6-8],

Mohamed, Sodky H.; Anders, Andre

2006-01-01T23:59:59.000Z

122

Morphological modeling of neurons  

E-Print Network [OSTI]

of the Bifurcation Model . 2. Extension to Multifurcations 3. Diameter Dependence and Rail's Ratio . D. Representation of Somata E. Representation of the Environment 5 7 7 7 9 10 10 14 14 14 16 L-SYSTEM MODELING . A. L-system Grammars Can Generate... morphologies generated for a uniform logical space would have to be mapped into the generally non-uniform physical space. We suggest a so- lution to this problem which involves the use of three-dimensional grids and mapping these grids between the uniform...

Mulchandani, Kishore

1995-01-01T23:59:59.000Z

123

Evolution of chemical, biological, and physical water properties in the northern California Current in 2005  

E-Print Network [OSTI]

in 2005: Remote or local wind forcing? B. Hickey,1 A. MacFadyen,1 W. Cochlan,2 R. Kudela,3 K. Bruland,3. Cochlan, R. Kudela, K. Bruland, and C. Trick (2006), Evolution of chemical, biological, and physical water

Hickey, Barbara

124

Rock Physics Characterization of Organic-Rich Shale Formations to Predict Organic Properties  

E-Print Network [OSTI]

rely on to assess the economic potential of these formations are: total organic carbon (TOC), thermal maturity, hydrocarbon saturation, porosity, mineralogy and brittleness. In this thesis, I investigate rock physics models and methods for the possible...

Bush, Brandon

2013-07-29T23:59:59.000Z

125

Physical Property of Magnesium Doped Barium Hexaferrite Particles By Citrate Precursor Route In Presence Of Surfactants  

SciTech Connect (OSTI)

M-type Barium Magnesium hexaferrite with the composition BaMg{sub 2}Fe{sub 10}O{sub 19} was successfully prepared with and without surfactant by using a citrate precursor route. The obtained precursors were calcined at various temperatures. The crystalline structure, phase analysis and particle size were investigated by using X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM) techniques. It is observed that the surfactant addition controls the microstructure of the formed Barium Magnesium hexaferrite particles and the type of surfactant plays a crucial role in deciding the morphology of particles.

Paladiya, Snehal; Chauhan, C. C.; Jotania, R. B. [Indus Institute of Technology and Engineering, Rancharda via Thaltej, Ahmedabad-382 115. Gujarat (India)

2010-12-01T23:59:59.000Z

126

COVER Graphene has aroused multidisciplinary interest because of its unique morphology and chemical structure as well as excellent physicochemical and electronic properties. In this review, recent  

E-Print Network [OSTI]

#12;COVER Graphene has aroused multidisciplinary interest because of its unique morphology significant advances in the synthesis of graphene and graphene-related nanomaterials using different methods are summarized. The important roles of graphene-based nanomaterials for high- performance pollutant removal

Texas at San Antonio, University of

127

An investigation of the mechanical and physical properties of copper-silver alloys and the use of these alloys in Pre-Columbian America  

E-Print Network [OSTI]

In both the Andean zone of South America and in Mesoamerica, copper-silver alloys were important in the production of thin, silver-colored sheet metal artifacts. This thesis examines the mechanical and physical properties ...

Taylor, Shannon L., S.B. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

128

Connecting the Physical Properties of Galaxies with the Overdensity and Tidal Shear of the Large-Scale Environment  

E-Print Network [OSTI]

We have examined the correlations between the large-scale environment of galaxies and their physical properties, using a sample of 28,354 nearby galaxies drawn from the Sloan Digital Sky Survey, and the large-scale tidal field reconstructed in real space from the 2Mass Redshift Survey and smoothed over a radius of $\\sim 6 h^{-1}$Mpc. The large-scale environment is expressed in terms of the overdensity, the ellipticity of the shear and the type of the large-scale structure. The physical properties analyzed include $r$-band absolute magnitude $M_{^{0.1}r}$, stellar mass $M_\\ast$, $g-r$ colour, concentration parameter $R_{90}/R_{50}$ and surface stellar mass density $\\mu_\\ast$. Both luminosity and stellar mass are found to be statistically linked to the large-scale environment, regardless of how the environment is quantified. More luminous (massive) galaxies reside preferentially in the regions with higher densities, lower ellipticities and halo-like structures. At fixed luminosity, the large-scale overdensity depends strongly on parameters related to the recent star formation history, that is colour and D(4000), but is almost independent of the structural parameters $R_{90}/R_{50}$ and $\\mu_\\ast$. All the physical properties are statistically linked to the shear of the large-scale environment even when the large-scale density is constrained to a narrow range. This statistical link has been found to be most significant in the quasi-linear regions where the large-scale density approximates to an order of unity, but no longer significant in highly nonlinear regimes with $\\delta_{\\rm LS}\\gg 1$.

Jounghun Lee; Cheng Li

2008-03-12T23:59:59.000Z

129

Statistical Analysis and Geologic Evaluation of Laboratory-Derived Physical Property Data for Selected Nevada Test Site Core Samples of Non-Zeolitized Tuffs  

SciTech Connect (OSTI)

A statistical analysis and geologic evaluation of recently acquired laboratory-derived physical property data are being performed to better understand and more precisely correlate physical properties with specific geologic parameters associated with non-zeolitized tuffs at the Nevada Test Site. Physical property data include wet and dry bulk density, grain density (i.e., specific gravity), total porosity, and effective porosity. Geologic parameters utilized include degree of welding, lithology, stratigraphy, geographic area, and matrix mineralogy (i.e., vitric versus devitrified). Initial results indicate a very good correlation between physical properties and geologic parameters such as degree of welding, lithology, and matrix mineralogy. However, physical properties appear to be independent of stratigraphy and geographic area, suggesting that the data are transferrable with regards to these two geologic parameters. Statistical analyses also indicate that the assumed grain density of 2.65 grams per cubic centimeter used to calculate porosity in some samples is too high. This results in corresponding calculated porosity values approximately 5 percent too high (e.g., 45 percent versus 40 percent), which can be significant in the lower porosity rocks. Similar analyses and evaluations of zeolitic tuffs and carbonate rock physical properties data are ongoing as well as comparisons to geophysical log values.

NSTec Environmental Restoration

2009-04-20T23:59:59.000Z

130

Construction and physical properties of Kerr black holes with scalar hair  

E-Print Network [OSTI]

Kerr black holes with scalar hair are solutions of the Einstein-Klein-Gordon field equations describing regular (on and outside an event horizon), asymptotically flat black holes with scalar hair (arXiv:1403.2757). These black holes interpolate continuously between the Kerr solution and rotating boson stars in D=4 spacetime dimensions. Here we provide details on their construction, discussing properties of the ansatz, the field equations, the boundary conditions and the numerical strategy. Then, we present an overview of the parameter space of the solutions, and describe in detail the space-time structure of the black holes exterior geometry and of the scalar field for a sample of reference solutions. Phenomenological properties of potential astrophysical interest are also discussed, and the stability properties and possible generalizations are commented on. As supplementary material to this paper we make available numerical data files for the sample of reference solutions discussed, for public use.

Herdeiro, Carlos

2015-01-01T23:59:59.000Z

131

Variation in physical rock properties determined from sonic logs at a South Texas lignite mine  

E-Print Network [OSTI]

or underburden units which were identified as potential problem units. S1gn1ficance of Study In the planning and design of a Gulf Coast lignite mi ne, a need exists to deter nine the variability of phys1cal rock properties within strati graphic units...VARIATION IN PHVSICAL ROCK PROPERTIES DETERMINED FROM SONIC LOGS AT A SOUTH TEXAS LIGNITE MINE A Thesis by KERRV OON CATO Submitted to the Graduate College of Texas A&M University in Partial fulfillment of the requirements for the degree...

Cato, Kerry Don

1985-01-01T23:59:59.000Z

132

Study of physical and chemical properties of vitrinites. Inferences on depositional and coalification controls  

E-Print Network [OSTI]

, textural and coking properties was carried out on vitrains from the Puertollano, Blanzy­Montçeau, Asturias (subbituminous/high volatile C bituminous coals). The characteristics of the Puertollano vitrains described here can also be attributed to the telocollinite (>80% vol.) for the high volatile C bituminous coal

Paris-Sud XI, Université de

133

LAND AND PHYSICAL FACILITIES Section 10-1 Interests in Real Property.  

E-Print Network [OSTI]

and supporting documentation that allows it to verify the fair market value and terms of the transactions and analyzed; (4) be fairly priced in the context of applicable fair market values and other relevant factors transactions, including but not limited to the disposition, acquisition and receipt of real property

Olsen, Stephen L.

134

Effect of aluminum fluoride on the physical properties and stability of fluorozirconate and fluorozirco-hafnate glasses  

SciTech Connect (OSTI)

The glass quality, physical properties, and thermal stability of fluorozirconate and fluorozirco-hafnate glasses were investigated as a function of the AIF{sub 3} content. The AIF{sub 3} concentration varied from 2 to 3.25 mol%. The ratio of the other components was constant, except for 50% substitution of ZrF{sub 4} by HfF{sub 4} in the fluorozirco-hafnate glasses. The physical properties of all the glasses were not affected strongly by AlF{sub 3} content. However, the fluorozirco-hafnate glasses were prone to precipitate out AlF{sub 3} microcrystals for AlF{sub 3} contents greater than 3 mol%. The thermal stability of the glasses revealed a compositional dependence only in the case of the fluorozirco-hafnate glasses. The thermal stability decreased as the AlF{sub 3} content increased above 3 mol%. The authors conclude that the AlF{sub 3} microcrystals nucleated other fluoride phases such as zirconium-barium fluoride crystals.

Busse, L.; Aggarwal, I. (Naval Research Lab., Washington, DC (US)); Sanghera, J.S. (Geo-centers Inc., Ft. Washington, MD (US)); Hart, P.; Sachon, M.G. (Sachs/Freeman Associates, Inc., Landover, MD (US))

1990-09-01T23:59:59.000Z

135

Mineralogy, reflectance spectra, and physical properties of the Chelyabinsk LL5 chondrite, insight into shock induced changes in asteroid regoliths  

E-Print Network [OSTI]

The mineralogy and physical properties of Chelyabinsk meteorites (fall, February 15, 2013) are presented. Three types of meteorite material are present, described as the light-colored, dark-colored, and impact-melt lithologies. All are of LL5 composition with the impact-melt lithology being close to whole-rock melt and the dark-colored lithology being shock-darkened due to partial melting of iron metal and sulfides. This enables us to study the effect of increasing shock on material with identical composition and origin. Based on the magnetic susceptibility, the Chelyabinsk meteorites are richer in metallic iron as compared to other LL chondrites. The measured bulk and grain densities and the porosity closely resemble other LL chondrites. Shock darkening does not have a significant effect on the material physical properties, but causes a decrease of reflectance and decrease in silicate absorption bands in the reflectance spectra. This is similar to the space weathering effects observed on asteroids. However, ...

Kohout, Tomas; Grokhovsky, Victor I; Yakovlev, Grigoriy A; Haloda, Jakub; Halodova, Patricie; Michallik, Radoslaw M; Penttilä, Antti; Muinonen, Karri

2014-01-01T23:59:59.000Z

136

Synthesis and physical properties of novel perfluorinated methylene oxide oligomers. The ultimate low temperature fluids  

SciTech Connect (OSTI)

Perfluorinated polyethers are a class of substances which are extremely inert and have both extraordinary high temperature stability and low temperature properties. The synthesis of perfluorinated polyformaldehydes with the highest oxygen content was designed to give the maximum liquid range and low temperature properties. Novel low molecular weight perfluorinated polyformaldehydes with stable and unreactive perfluoro-n-butyl end groups were prepared by liquid-phase direct fluorination. The boiling point of these compounds increases by approximately 20{degree}C with the addition of each difluoromethylene oxide unit. This trend does not continue for longer chain lengths (n > 4) where the increase in boiling point per CF{sub 2}O unit diminishes. The average increase of melting temperature is approximately 1-2{degree}C as the perfluorinated polyformaldehyde chain increases one difluoromethylene oxide unit. The new perfluoropolyether fluids produced have melting points ranging from -145 to -152{degree}C. 33 refs., 3 tabs.

Sung, K.; Lagow, R.J. [Univ. of Texas, Austin, TX (United States)

1995-04-19T23:59:59.000Z

137

Tar sand extraction by steam stimulation and steam drive: measurement of physical properties  

SciTech Connect (OSTI)

The measurement of the following thermophysical properties of Utah tar sands is in progress: thermal conductivity, specific heat relative permeability, and viscosity (of the recovered bitumen). During the report period (October 1, 1978 to November 1, 1979), experimental procedures have been developed and a basic data set has been measured. Additionally, standard core analysis has been performed for four drill sites in the Asphalt Ridge, Utah area.

Linberg, W.R.

1980-09-10T23:59:59.000Z

138

Grinding energy and physical properties of chopped and hammer-milled barley, wheat, oat, and canola straws  

SciTech Connect (OSTI)

In the present study, specific energy for grinding and physical properties of wheat, canola, oat and barley straw grinds were investigated. The initial moisture content of the straw was about 0.13–0.15 (fraction total mass basis). Particle size reduction experiments were conducted in two stages: (1) a chopper without a screen, and (2) a hammer mill using three screen sizes (19.05, 25.4, and 31.75 mm). The lowest grinding energy (1.96 and 2.91 kWh t-1) was recorded for canola straw using a chopper and hammer mill with 19.05-mm screen size, whereas the highest (3.15 and 8.05 kWh t-1) was recorded for barley and oat straws. The physical properties (geometric mean particle diameter, bulk, tapped and particle density, and porosity) of the chopped and hammer-milled wheat, barley, canola, and oat straw grinds measured were in the range of 0.98–4.22 mm, 36–80 kg m-3, 49–119 kg m-3, 600–1220 kg m-3, and 0.9–0.96, respectively. The average mean particle diameter was highest for the chopped wheat straw (4.22-mm) and lowest for the canola grind (0.98-mm). The canola grinds produced using the hammer mill (19.05-mm screen size) had the highest bulk and tapped density of about 80 and 119 kg m-3; whereas, the wheat and oat grinds had the lowest of about 58 and 88–90 kg m-3. The results indicate that the bulk and tapped densities are inversely proportional to the particle size of the grinds. The flow properties of the grinds calculated are better for chopped straws compared to hammer milled using smaller screen size (19.05 mm).

J.S. Tumuluru [Idaho National Laboratory (INL), Idaho Falls, ID (United States). Biofuels and Renewable Energy Technologies Dept.; L.G. Tabil [Univ. of Saskatchewan, Saskatoon, Saskatchewan (Canada). Dept. of Chemical and Biological Engineering; Y. Song [Shenyang Agricultural University (China). Coll. of Engineering; K.L. Iroba [Univ. of Saskatchewan, Saskatoon, Saskatchewan (Canada). Dept. of Chemical and Biological Engineering; V. Meda [Univ. of Saskatchewan, Saskatoon, Saskatchewan (Canada). Dept. of Chemical and Biological Engineering

2014-01-01T23:59:59.000Z

139

A method for the rapid, accurate prediction of the physical properties of middle distillate fuels from LC- sup 1 H NMR derived data  

SciTech Connect (OSTI)

A method has been developed whereby various physical properties of middle distillate fuels may be rapidly and accurately calculated by a group property approach from data obtained from a directly coupled Liquid Chromatograph - {sup 1}H Nuclear Magnetic Resonance Spectrometer (LC-{sup 1}H NMR). The physical properties include cetane number, cetane index, density, specific gravity, pour point, flash point, viscosity, filterability, heat of combustion, cloud point, volume percent aromatics, residual carbon content, and initial, 10%, 50%, 90%, and end boiling points. These property predictions have accuracies approaching the error for measurement of the experimental physical property and require less than two hours analysis time per fuel. An interface was developed between the NMR spectrometer and a personal computer to aid in automation of the LC-{sup 1}H NMR data collection and to perform off-line analysis of the LC-{sup 1}H NMR data. This interface and all associated software is described. Also presented is a series of model compounds studies in which the physical properties of pure hydrocarbons (i.e., alkanes, monocyclic and dicyclic aromatics) were predicted by a similar group property approach.

Caswell, K.A.

1988-01-01T23:59:59.000Z

140

www.mdpi.com/journal/ijms Physical Properties of Normal Grade Biodiesel and Winter Grade Biodiesel  

E-Print Network [OSTI]

Abstract: In this study, optical and thermal properties of normal grade and winter grade palm oil biodiesel were investigated. Surface Plasmon Resonance and Photopyroelectric technique were used to evaluate the samples. The dispersion curve and thermal diffusivity were obtained. Consequently, the variation of refractive index, as a function of wavelength in normal grade biodiesel is faster than winter grade palm oil biodiesel, and the thermal diffusivity of winter grade biodiesel is higher than the thermal diffusivity of normal grade biodiesel. This is attributed to the higher palmitic acid C16:0 content in normal grade than in winter grade palm oil biodiesel.

Amir Reza Sadrolhosseini; Mohd Maarof Moksin; Harrison Lau; Lik Nang; Monir Norozi; W. Mahmood; Mat Yunus; Azmi Zakaria

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Relationship between the physical and mineralogical properties of two clays and their bloating characteristics  

E-Print Network [OSTI]

. Water Absorbtion of Clay at 22aC and 100 Percent Relative Humidity 3. Chemical Analysis Using Emission Spectrograph 4. Magnetic Properties of Clays and Aggregates 5. Carbon Analysis 6. Compositions of the Mixed Red Clay Samples 11 13 23 28... capacity of some clays. Successful attempts have 3 been made with lignin sulfite liquor and diesel fuel. ((hen the clay structure is destroyed, 11 large amounts of (OH) are released to react with the exchange ions in the clay. Therefore, the clay...

Abbott, Ute Agnes

1973-01-01T23:59:59.000Z

142

Photo-physical properties enhancement of bare and core-shell quantum dots  

SciTech Connect (OSTI)

Semiconductor nanocrystals (NCs) (also known as quantum dots, QDs) have attracted immense attention for their size-tunable optical properties that makes them impressive candidates for solar cells, light emitting devices, lasers, as well as biomedical imaging. However monodispersity, high and consistent photoluminescence, photostability, and biocompatibility are still major challenges. This work focuses on optimizing the photophysical properties and biocompatibility of QDs by forming core-shell nanostructures and their encapsulation by a carrier. Highly luminescent CdS and CdS-ZnS core-shell QDs with 5 nm sizes were synthesized using a facile approach based on pyrolysis of the single molecule precursors. After capping the CdS QDs with a thin layer of ZnS to reduce toxicity, the photoluminescence and photostability of the core-shell QDs was significantly enhanced. To make both the bare and core/shell structure QDs more resistant against photochemical reactions, a mesoporous silica layer was grown on the QDs through a reverse microemulsion technique based on hydrophobic interaction. This encapsulation enhanced the quantum yield and photostability compared to the bare QDs by providing much stronger resistance to oxidation and Oswald ripening of QDs. Encapsulation also improved biocompatibility of QDs that was evaluated with human umbilical vein endothelial cell lines (HUVEC)

Mumin, Md Abdul, E-mail: pcharpentier@eng.uwo.ca; Akhter, Kazi Farida, E-mail: pcharpentier@eng.uwo.ca; Charpentier, Paul A., E-mail: pcharpentier@eng.uwo.ca [Chemical and Biochemical Engineering, Western University, London Ontario (Canada)

2014-03-31T23:59:59.000Z

143

Rapid prediction of various physical properties for middle distillate fuel utilizing directly coupled liquid chromatography//sup 1/H nuclear magnetic resonance  

SciTech Connect (OSTI)

A group property approach has been developed to predict 17 physical properties of middle distillate (e.g., jet and diesel) fuels from experimentally derived liquid chromatography//sup 1/H nuclear magnetic resonance (LC//sup 1/H NMR) data. In the LC//sup 1/H NMR technique, the fuel is separated according to chemical class and the average molecular structure for each chemical class is then calculated. These average molecular structures form a basis set to predict the physical properties of the fuel. The physical properties that can be obtained in this manner are cetane number, cetane index, density, specific gravity, pour point, flash point, viscosity, filterability, heat of combustion, cloud point, volume percent aromatics, residual carbon content, and the initial, 10%, 50%, 90%, and end boiling points. Fourteen of the correlation coefficients for the predictions are better than 0.90 with 11 of the predictions falling either within or approximately equal to the ASTM method reproducibility for the measurement of the fuel property. The present method also provides chemical insight concerning the influence of chemical structural changes on the physical properties of the fuel as well as requiring much less analysis time and sample volume than corresponding ASTM methods.

Caswell, K.A.; Glass, T.E.; Swann, M.; Dorn, H.C.

1989-02-01T23:59:59.000Z

144

Physical properties of erbium implanted tungsten oxide filmsdeposited by reactive dual magnetron sputtering  

SciTech Connect (OSTI)

Amorphous and partially crystalline WO3 thin films wereprepared by reactive dual magnetron sputtering and successively implantedby erbium ions with a fluence in the range from 7.7 x 1014 to 5 x 1015ions/cm2. The electrical and optical properties were studied as afunction of the film deposition parameters and the ion fluence. Ionimplantation caused a strong decrease of the resistivity, a moderatedecrease of the index of refraction and a moderate increase of theextinction coefficient in the visible and near infrared, while theoptical band gap remained almost unchanged. These effects could belargely ascribed to ion-induced oxygen deficiency. When annealed in air,the already low resistivities of the implanted samples decreased furtherup to 70oC, whereas oxidation, and hence a strong increase of theresistivity, was observed at higher annealing temperatures.

Mohamed, Sodky H.; Anders, Andre

2006-11-08T23:59:59.000Z

145

The effects of emission of anthropogenic chemical species on chemical and physical properties of aerosols  

SciTech Connect (OSTI)

Numerical studies have been carried out to examine the effects of chemically reactive trace gases emitted into the atmosphere on the evolution of chemical species concentrations, on the chemical composition and size distribution of airborne particles, and on optical properties of aerosols. Argonne`s chemistry module has been modified by refining the treatment of gas-to-particle conversion. The changes in size distribution and chemical composition of aerosols are calculated with consideration of heteramolecular diffusion and coagulation. Results of the 24 h real-time simulation indicate that the maximum oxidation rate of sulfur dioxide is about 0.4% h{sup {minus}1}; that the total aerosol volume increases with the increase in relative humidity by as much as 36% (due mainly to the collection of sulfuric acid embryos by preexisting particles); and that the surface area, a measure of optical depth, increases with the increase in relative humidity by as much as 27%.

Lee, In Young

1994-07-01T23:59:59.000Z

146

Cosmological Implications and Physical Properties of an X-Ray Flux-Limited Sample of Galaxy Clusters  

E-Print Network [OSTI]

The original abstract significantly exceeds the space available here, so here's a brief summary. The abstract is similar to the abstract of astro-ph/0111285 (ApJ, 567, 716) which describes the X-ray galaxy cluster sample HIFLUGCS, the X-ray luminosity--gravitational mass relation, the cluster mass function, and the derived cosmological constraints. Additionally, the fraction of the total gravitating mass in the universe which is contained in intracluster gas is quantified. Furthermore, physical properties of the cluster sample have been studied and analyses of relations between different cluster parameters (including the gas mass fraction, gas temperature, X-ray luminosity, gas mass, gravitational mass, beta, and core radius) are discussed. Also, results from an analysis of XMM-Newton performance verification phase data of Abell 1835 are described.

Thomas H. Reiprich

2003-08-08T23:59:59.000Z

147

Unusual Physical and Chemical Properties of Cu in Ce1-xCuxO2 Oxides  

SciTech Connect (OSTI)

The structural and electronic properties of Ce{sub 1-x}Cu{sub x}O{sub 2} nano systems prepared by a reverse microemulsion method were characterized with synchrotron-based X-ray diffraction, X-ray absorption spectroscopy, Raman spectroscopy, and density functional calculations. The Cu atoms embedded in ceria had an oxidation state higher than those of the cations in Cu{sub 2}O or CuO. The lattice of the Ce{sub 1-x}Cu{sub x}O{sub 2} systems still adopted a fluorite-type structure, but it was highly distorted with multiple cation-oxygen distances with respect to the single cation-oxygen bond distance seen in pure ceria. The doping of CeO{sub 2} with copper introduced a large strain into the oxide lattice and favored the formation of O vacancies, leading to a Ce{sub 1-x}Cu{sub x}O{sub 2-y} stoichiometry for our materials. Cu approached the planar geometry characteristic of Cu(II) oxides, but with a strongly perturbed local order. The chemical activities of the Ce{sub 1-x}Cu{sub x}O{sub 2} nanoparticles were tested using the reactions with H2 and O2 as probes. During the reduction in hydrogen, an induction time was observed and became shorter after raising the reaction temperature. The fraction of copper that could be reduced in the Ce{sub 1-x}Cu{sub x}O{sub 2} oxides also depended strongly on the reaction temperature. A comparison with data for the reduction of pure copper oxides indicated that the copper embedded in ceria was much more difficult to reduce. The reduction of the Ce{sub 1-x}Cu{sub x}O{sub 2} nanoparticles was rather reversible, without the generation of a significant amount of CuO or Cu{sub 2}O phases during reoxidation. This reversible process demonstrates the unusual structural and chemical properties of the Cu-doped ceria materials.

Wang,X.; Rodriguez, J.; Hanson, J.; Gamarra, D.; Martinez-Arias, A.; Fernandez-Garcia, M.

2005-01-01T23:59:59.000Z

148

Modulation of physical and photocatalytic properties of (Cr, N) codoped TiO{sub 2} nanorods using soft solution processing  

SciTech Connect (OSTI)

Facile polymerized complex reactions together with a hydrothermal reaction were implemented to make single crystalline TiO{sub 2} nanorods for the first time. Chromium (Cr) and nitrogen (N{sub 2}) co-doping was performed to tailor the physical properties. Transmission electron microscopy and x-ray diffraction study illustrated that highly reactive facets of (101), (111), and (001) dominated rutile TiO{sub 2} nanorods. A growth model, based on formation of complex species, was proposed to elucidate effectiveness of the soft solution processing in making TiO{sub 2} nanorods. X-ray photoelectron spectroscopy analysis and consideration of fundamentals of charge neutrality showed N{sub 2} doping could inhibit formation of Cr{sup 6+} and oxygen vacancies (V{sub O}{sup 2+}). An investigation of the photocatalytic properties exhibited high efficiency of photodegradation of methylene blue in 15?min under pH?=?10, using a nanocomposite of (7% Cr, 0.0021% N) codoped and 3% Cr doped TiO{sub 2} nanorods.

Lu, Wen-Chung [Institute of Nanotechnology and Microsystems Engineering, National Cheng Kung University, No. 1, University Road, Tainan City 70101, Taiwan (China); Department of Materials Science and Engineering, National Cheng Kung University, No. 1, University Road, Tainan City 70101, Taiwan (China); Nguyen, Hoang-Diem; Wu, Chun-Yi [Department of Materials Science and Engineering, National Cheng Kung University, No. 1, University Road, Tainan City 70101, Taiwan (China); Chang, Kao-Shuo, E-mail: kschang@mail.ncku.edu.tw; Yoshimura, Masahiro [Department of Materials Science and Engineering, National Cheng Kung University, No. 1, University Road, Tainan City 70101, Taiwan (China); Promotion Center for Global Materials Research (PCGMR), National Cheng Kung University, No. 1, University Road, Tainan City 70101, Taiwan (China)

2014-04-14T23:59:59.000Z

149

Modeling of Some Physical Properties of Zirconium Alloys for Nuclear Applications in Support of UFD Campaign  

SciTech Connect (OSTI)

Zirconium-based alloys Zircaloy-2 and Zircaloy-4 are widely used in the nuclear industry as cladding materials for light water reactor (LWR) fuels. These materials display a very good combination of properties such as low neutron absorption, creep behavior, stress-corrosion cracking resistance, reduced hydrogen uptake, corrosion and/or oxidation, especially in the case of Zircaloy-4. However, over the last couple of years, in the post-Fukushima Daiichi world, energetic efforts have been undertaken to improve fuel clad oxidation resistance during off-normal temperature excursions. Efforts have also been made to improve upon the already achieved levels of mechanical behavior and reduce hydrogen uptake. In order to facilitate the development of such novel materials, it is very important to achieve not only engineering control, but also a scientific understanding of the underlying material degradation mechanisms, both in working conditions and in storage of used nuclear fuel. This report strives to contribute to these efforts by constructing the thermodynamic models of both alloys; constructing of the respective phase diagrams, and oxidation mechanisms. A special emphasis was placed upon the role of zirconium suboxides in hydrogen uptake reduction and the atomic mechanisms of oxidation. To that end, computational thermodynamics calculations were conducted concurrently with first-principles atomistic modeling.

Michael V. Glazoff

2013-08-01T23:59:59.000Z

150

Superconductivity and Physical Properties of CaPd2Ge2 Single Crystals  

SciTech Connect (OSTI)

We present the superconducting and normal state properties of CaPd2Ge2 single crystals investigated by magnetic susceptibility ?, isothermal magnetization M, heat capacity Cp, in-plane electrical resistivity ? and London penetration depth ? versus temperature T and magnetic field H measurements. Bulk superconductivity is inferred from the ?(T) and Cp(T) data. The ?(T) data exhibit metallic behavior and a superconducting transition with Tc onset = 1.98 K and zero resistivity at Tc 0 = 1.67 K. The ?(T) reveals the onset of superconductivity at 2.0 K. For T > 2.0 K, the ?(T) and M(H) are weakly anisotropic paramagnetic with ?ab > ?c. The Cp(T) data confirm the bulk superconductivity below Tc = 1.69(3) K. The superconducting state electronic heat capacity is analyzed within the framework of a single-band ?-model of BCS superconductivity and various normal and superconducting state parameters are estimated. Within the ?-model, the Cp(T) data and the ab plane ?(T) data consistently indicate a moderately anisotropic s-wave gap with ?(0)/kBTc ? 1.6, somewhat smaller than the BCS value of 1.764. The relationship of the heat capacity jump at Tc and the penetration depth measurement to the anisotropy in the s-wave gap is discussed.

Anand, V K [Ames Laboratory; Kim, Hyunsoo [Ames Laboratory; Tanatar, Makariy A [Ames Laboratory; Prozorov, Ruslan [Ames Laboratory; Johnston, David C [Ames Laboratory

2014-10-08T23:59:59.000Z

151

Orbital and physical properties of the $\\sigma$ Ori Aa,Ab,B triple system  

E-Print Network [OSTI]

We provide a complete characterization of the astrophysical properties of the $\\sigma$ Ori Aa,Ab,B hierarchical triple system, and an improved set of orbital parameters for the highly eccentric $\\sigma$ Ori Aa,Ab spectroscopic binary. We compiled a spectroscopic dataset comprising 90 high-resolution spectra covering a total time span of 1963 days. We applied the Lehman-Filh\\'es method for a detailed orbital analysis of the radial velocity curves and performed a combined quantitative spectroscopic analysis of the {$\\sigma$ Ori Aa,Ab,B} system by means of the stellar atmosphere code FASTWIND. We used our own plus other available information on photometry and distance to the system for measuring the radii, luminosities, and spectroscopic masses of the three components. We also inferred evolutionary masses and stellar ages using the Bayesian code BONNSAI. The orbital analysis of the new radial velocity curves led to a very accurate orbital solution of the $\\sigma$ Ori Aa,Ab pair. We provided indirect arguments in...

Simón-Díaz,; Lorenzo, J; Apellániz, J Maíz; Schneider, F R N; Negueruela, I; Barbá, R H; Dorda, R; Marco, A; Montes, D; Pellerin, A; Sanchez-Bermudez, J; Sódor, Á; Sota, A

2014-01-01T23:59:59.000Z

152

Changes in Soil Physical Properties Due to Organic Waste Applications: A Review1 R. KHALEEL, K. R. REDDY, AND M. R. OVERCASH2  

E-Print Network [OSTI]

. REDDY, AND M. R. OVERCASH2 ABSTRACT Land application of organic wastes such as animal manure, munici- pal wastes, and sewage sludge could alter the soil physical properties. Repeated substantial). Several investiga- tors, in monitoring runoff water quality from small plot-sized land application areas

Florida, University of

153

Sulfur and ash reduction potential and selected chemical and physical properties of United States coals. [Contains glossary  

SciTech Connect (OSTI)

This report presents the washability and comprehensive characterization results of 184 raw coal channel samples, including anthracite, bituminous and lignite coals, collected from the Central Region of the United States. This is the second of a three volume report on the coals of the United States. All the data are presented in six appendices. Statistical techniques and definitions are presented in Appendix A, and a glossary of terms is presented in Appendix B. The complete washability data and an in-depth characterization of each sample are presented alphabetically by state in Appendix C. In Appendix D, a statistical evaluation is given for the composited washability data, selected chemical and physical properties and washability data interpolated at various levels of Btu recovery. This presentation is shown by state, section, and region where four or more samples were collected. Appendix E presents coalbed codes and names for the Central Region coals. Graphical summations are presented by state, section and region showing the effects of crushing on impurity reductions, and the distribution of raw and clean coal samples meeting various levels of SO{sub 2} emissions. 35 figs., 5 tabs.

Cavallaro, J.A.; Deurbrouck, A.W.; Killmeyer, R.P.; Fuchs, W. (USDOE Pittsburgh Energy Technology Center, PA (USA). Coal Preparation Div.); Jacobsen, P.S. (Burns and Roe Services Corp., Pittsburgh, PA (USA))

1991-02-01T23:59:59.000Z

154

Characterization of the geochemical and physical properties of wetland soils on the Savannah River Site: Field sampling activities. Final report  

SciTech Connect (OSTI)

There are 36,000 acres of wetlands on the Savannah River Site (SRS) and an additional 5,000 acres of floodplain. Recent studies of wetland soils near various waste sites at SRS have shown that some wetlands have been contaminated with pollutants resulting from SRS operations. In general, releases of contaminants to wetland areas have been indirect. These releases may have originated at disposal lagoons or waste facilities located in the vicinity of the wetland areas. Transport mechanisms such as surface runoff, soil erosion, sediment transport, and groundwater seepage into downgradient wetland areas are responsible for the indirect discharges to the wetland areas. The SRS determined that a database of background geochemical and physical properties for wetland soils on the SRS was needed to facilitate future remedial investigations, human health and ecological risk assessments, treatability studies, and feasibility studies for the wetland areas. These data are needed for comparison to contaminant data collected from wetland soils that have been affected by contamination from SRS operations. This report describes the efforts associated with the collection of soil cores, preparation of a lithologic log for each core, and the processing and packaging of individual soil samples for shipment to analytical laboratory facilities.

Dixon, K.L. [Westinghouse Savannah River Co., Aiken, SC (United States)

1992-11-01T23:59:59.000Z

155

Polymer/organosilica nanocomposites based on polyimide with benzimidazole linkages and reactive organoclay containing isoleucine amino acid: Synthesis, characterization and morphology properties  

SciTech Connect (OSTI)

Highlights: ? A reactive organoclay was formed using L-isoleucine amino acid as a swelling agent. ? Polyimide was synthesized from benzimidazole diamine and pyromellitic dianhydride. ? Imide and benzimidazole groups assured the thermal stability of the nanocomposites. ? Nanocomposite films were prepared by an in situ polymerization reaction. ? The TEM micrographs of nanocomposites revealed well-exfoliated structures. -- Abstract: Polyimide–silica nanocomposites are attractive hybrid architectures that possess excellent mechanical, thermal and chemical properties. But, the dispersion of inorganic domains in the polymer matrix and the compatibility between the organic and inorganic phases are critical factors in these hybrid systems. In this investigation, a reactive organoclay was prepared via ion exchange reaction between protonated form of difunctional L-isoleucine amino acid as a swelling agent and Cloisite Na{sup +} montmorillonite. Amine functional groups of this swelling agent formed an ionic bond with the negatively charged silicates, whereas the remaining acid functional groups were available for further interaction with polymer chains. Then organo-soluble polyimide (PI) have been successfully synthesized from the reaction of 2-(3,5-diaminophenyl)-benzimidazole and pyromellitic dianhydride in N,N-dimethylacetamide. Finally, PI/organoclay nanocomposite films enclosing 1%, 3%, 5%, 7% and 10% of synthesized organoclay were successfully prepared by an in situ polymerization reaction through thermal imidization. The synthesized hybrid materials were subsequently characterized by Fourier transform infrared spectroscopy, X-ray diffraction, electron microscopy, and thermogravimetric analysis techniques. The PI/organoclay nanocomposite films have good optical transparencies and the mechanical properties were substantially improved by the incorporation of the reactive organoclay.

Mallakpour, Shadpour, E-mail: mallak@cc.iut.ac.ir [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of) [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Dinari, Mohammad [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of)] [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of)

2012-09-15T23:59:59.000Z

156

Modeling morphology evolution during solvent-based fabrication of organic solar cells  

E-Print Network [OSTI]

Solvent-based techniques usually involve preparing dilute blends of electron-donor and electron-acceptor materials dissolved in a volatile solvent. After some form of coating onto a substrate, the solvent evaporates. An initially homogeneous mixture separates into electron-acceptor rich and electron-donor rich regions as the solvent evaporates. Depending on the specifics of the blend and processing conditions different morphologies are typically formed. Experimental evidence consistently confirms that the morphology critically affects device performance. A computational framework that can predict morphology evolution can significantly augment experimental analysis. Such a framework will also allow high throughput analysis of the large phase space of processing parameters, thus yielding insight into the process-structure-property relationships. In this paper, we formulate a computational framework to predict evolution of morphology during solvent-based fabrication of organic thin films. This is accomplished by developing a phase field-based model of evaporation-induced and substrate-induced phase-separation in ternary systems. This formulation allows all the important physical phenomena affecting morphology evolution during fabrication to be naturally incorporated. We discuss the various numerical and computational challenges associated with a three dimensional, finite-element based, massively parallel implementation of this framework. This formulation allows, for the first time, to model 3D morphology evolution over large time spans on device scale domains. We illustrate this framework by investigating and quantifying the effect of various process and system variables on morphology evolution. We explore ways to control the morphology evolution by investigating different evaporation rates, blend ratios and interaction parameters between components.

Olga Wodo; Baskar Ganapathysubramanian

2012-02-29T23:59:59.000Z

157

Radiation crosslinking of poly(vinyl chloride) with trimethylolpropanetrimethacrylate. IV. Effect of diundecyl phthalate: dependence of physical properties on composition. [Electron beam ion sources  

SciTech Connect (OSTI)

Blends of poly(vinyl chloride)(PVC) with polyfunctional monomers may be crosslinked by ionizing radiation. The physical properties of PVC blended with trimethylolpropanetrimethacrylate (TMPTMA) and diundecyl phthalate (DUP) were studied. The TMPTMA monomer crosslinked the blend by homopolymerization and/or grafting to PVC. The plasticizer, DUP, was chemically inert under irradiation but, by plasticizing the macromolecules and diluting the monomer, changed the kinetics extensively. Characteristics of the glass transitions and the tensile mechanical properties have been correlated with blend composition and radiation dose. Before irradiation, poly(vinyl chloride) was plasticized by both DUP and TMPTMA monomer. The increase in glass transition temperature and mechanical strength following irradiation to 5 Mrad was correlated with the TMPTMA content of the blend. Both the molecular structure of the network and the DUP content of the blend were factors in determining the physical properties of the final crosslinked blend. The molecular structure was determined by the kinetics of the crosslinking reactions, which in turn were determined by the blend composition. A molecular interpretation consistent with the physical properties, chemical kinetics, and mechanism of the crosslinking system has been presented. 24 figures, 2 tables.

Bowmer, T.N.; Vroom, W.I.

1983-11-01T23:59:59.000Z

158

A comprehensive program to develop correlations for the physical properties of Kraft black liquor. Interim report No. 2  

SciTech Connect (OSTI)

Experimental effort for the program to evaluate physical properties of kraft black liquors is now proceeding well. Experimental work includes pulping, liquor analysis, lignin purification and characterization, vapor-liquid equilibria, heat capacity, heats of solution and combustion, and viscosity measurements. Measurement of thermal conductivity has not yet begun. Collection of the data necessary for development of generalized correlations is proceeding, but will require about two more years. The digester is operating very well. It is now possible to operate the digester as a closed, rotating reactor or as a batch reactor with liquor circulation. When operated with liquor circulation, temperatures within the chip bed can be monitored during cooking. Cooking is reproducible, and cooks are being performed to produce liquors for experimental studies. The digester could be further modified to permit us to conduct rapid exchange batch pulping or to permit us to simulate continuous pulping. Liquors to be used in experimental studies are concentrated in our large scale evaporator or in our small scale evaporator. The large scale evaporator is used to concentrate liquors to about 50% solids for storage and for use in studies requiring high solids liquors. The small scale evaporator is used for preparing final samples to as high as 85% solids and for measuring vapor-liquid equilibria. Liquors are now routinely analyzed to determine all components, except higher molecular weight organic acids and extractives. Lignin determination by uv-visible means has been improved. Lignin purification from black liquor has been improved and lignin molecular weights are determined routinely. Work on lignin molecular weight distribution is still not satisfactory, but recent developments holds promise.

Fricke, A.L.

1990-12-01T23:59:59.000Z

159

Relations between structural parameters and physical properties in CdTe and Cd0.96Zn0.04Te alloys  

E-Print Network [OSTI]

481 Relations between structural parameters and physical properties in CdTe and Cd0.96Zn0.04Te cristaux de CdTe et de Cd0,96Zn0,04Te, de densité de dislocations variant entre 5 x 104 et 6 x 105 cm-2. La and photoluminescence experiments were performed on several CdTe and Cd0.96Zn0.04Te crystals with dislocation density

Paris-Sud XI, Université de

160

Physics 251 Properties of the Gell-Mann matrices Spring 2013 The Gell-Mann matrices are the traceless hermitian generators of the Lie algebra  

E-Print Network [OSTI]

Physics 251 Properties of the Gell-Mann matrices Spring 2013 The Gell-Mann matrices Gell-Mann matrices are defined by: 1 = 0 1 0 1 0 0 0 0 0 , 2 = 0 -i 0 i 0 0 0 0 0 , 3 = 1 0 0 , 7 = 0 0 0 0 0 -i 0 i 0 , 8 = 1 3 1 0 0 0 1 0 0 0 -2 . The Gell-Mann matrices satisfy

California at Santa Cruz, University of

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


161

New density functional theory approaches for enabling prediction of chemical and physical properties of plutonium and other actinides.  

SciTech Connect (OSTI)

Density Functional Theory (DFT) based Equation of State (EOS) construction is a prominent part of Sandia's capabilities to support engineering sciences. This capability is based on amending experimental data with information gained from computational investigations, in parts of the phase space where experimental data is hard, dangerous, or expensive to obtain. A prominent materials area where such computational investigations are hard to perform today because of limited accuracy is actinide and lanthanide materials. The Science of Extreme Environment Lab Directed Research and Development project described in this Report has had the aim to cure this accuracy problem. We have focused on the two major factors which would allow for accurate computational investigations of actinide and lanthanide materials: (1) The fully relativistic treatment needed for materials containing heavy atoms, and (2) the needed improved performance of DFT exchange-correlation functionals. We have implemented a fully relativistic treatment based on the Dirac Equation into the LANL code RSPt and we have shown that such a treatment is imperative when calculating properties of materials containing actinides and/or lanthanides. The present standard treatment that only includes some of the relativistic terms is not accurate enough and can even give misleading results. Compared to calculations previously considered state of the art, the Dirac treatment gives a substantial change in equilibrium volume predictions for materials with large spin-orbit coupling. For actinide and lanthanide materials, a Dirac treatment is thus a fundamental requirement in any computational investigation, including those for DFT-based EOS construction. For a full capability, a DFT functional capable of describing strongly correlated systems such as actinide materials need to be developed. Using the previously successful subsystem functional scheme developed by Mattsson et.al., we have created such a functional. In this functional the Harmonic Oscillator Gas is providing the necessary reference system for the strong correlation and localization occurring in actinides. Preliminary testing shows that the new Hao-Armiento-Mattsson (HAM) functional gives a trend towards improved results for the crystalline copper oxide test system we have chosen. This test system exhibits the same exchange-correlation physics as the actinide systems do, but without the relativistic effects, giving access to a pure testing ground for functionals. During the work important insights have been gained. An example is that currently available functionals, contrary to common belief, make large errors in so called hybridization regions where electrons from different ions interact and form new states. Together with the new understanding of functional issues, the Dirac implementation into the RSPt code will permit us to gain more fundamental understanding, both quantitatively and qualitatively, of materials of importance for Sandia and the rest of the Nuclear Weapons complex.

Mattsson, Ann Elisabet

2012-01-01T23:59:59.000Z

162

Determining graphene adhesion via substrate-regulated morphology of graphene  

E-Print Network [OSTI]

Determining graphene adhesion via substrate-regulated morphology of graphene Zhao Zhang and Teng Li Institute of Physics. Related Articles Identification of graphene crystallographic orientation by atomic two-dimensional, epitaxially-grown, nanostructured graphene for study of single molecule

Li, Teng

163

PHYSICAL REVIEW B 88, 014301 (2013) Static and dynamic magnetic properties of Ni80Fe20 anti-ring nanostructures  

E-Print Network [OSTI]

School of Physics, University of Western Australia, Crawley, Western Australia 6009, Australia (Received ground state and the dynamic dipole energy. This effect becomes more important when the patterns shrink

Adeyeye, Adekunle

2013-01-01T23:59:59.000Z

164

Colour morphology and its approaches.  

E-Print Network [OSTI]

??Mathematical morphology was first applied to binary images and readily extended to grey-level images. In extending mathematical morphology to colour it is difficult to define… (more)

Yeh, Chun-Wei

2015-01-01T23:59:59.000Z

165

Studying femtosecond-laser hyperdoping by controlling surface morphology  

E-Print Network [OSTI]

We study the fundamental properties of femtosecond-laser (fs-laser) hyperdoping by developing techniques to control the surface morphology following laser irradiation. By decoupling the formation of surface roughness from ...

Winkler, Mark T.

166

A comprehensive program to develop correlations for the physical properties of kraft black liquors. Interim report No.3  

SciTech Connect (OSTI)

The black liquor properties program has conducted a systematic collection data of properties, liquor composition, and lignin characteristics. Complete data, except for some density data, has been collected for Slash Pine black liquors made by experimental pulping at a total of 25 different pulping conditions that cover the entire range used for commercial pulping. In addition, complete data has been collected for some mill liquors and partial properties or composition data has been collected on Slash Pine black liquors made at 16 different pulping conditions and some mill liquors. Data reduction methods have been developed or extended for correlation of viscosity, heat capacity, heat of dilution, and density. Correlation of properties to pulping conditions and of composition to pulping conditions has begun. In most cases, data reduction methods have been developed that are fundamentally based and that have been shown to be generally applicable to all black liquors. While it has not proven to be possible to include research for comprehensive correlations for properties for liquors from other species, we have shown that the behavior of liquors made from other species is similar to that which has been explored extensively for Slash Pine liquors. This report reviews the methods used, describes examples of data reduction methods that have been developed, and presents some preliminary results for correlation of liquor composition and properties to pulping conditions for Slash Pine black liquors.

Fricke, A.L.; Dong, D.J.; Schmidl, G.W.; Stoy, M.A.; Zaman, A.A.

1993-09-01T23:59:59.000Z

167

Physical properties of Al{sub x}In{sub 1?x}N thin film alloys sputtered at low temperature  

SciTech Connect (OSTI)

In this paper, we report on the structural, optical, and electrical properties of a wide compositional range of Al{sub x}In{sub 1?x}N thin layers deposited on glass and polyethylene terephthalate substrates. Al{sub x}In{sub 1?x}N layers of controlled composition were obtained by a simple reactive magnetron co-sputtering protocol, using a single aluminium target with indium insets, by varying the Al/In target surface area ratio, and the composition of the deposition atmosphere. The relevant physical properties were investigated and discussed. It is shown that the texture of the thin films is dependent on the cation ratio, while the bowing parameters of lattice constants and band gap values are larger than those of epitaxial layers.

Besleaga, C.; Galca, A. C., E-mail: ac-galca@infim.ro; Miclea, C. F.; Mercioniu, I.; Enculescu, M.; Stan, G. E. [National Institute of Materials Physics, 105 bis Atomistilor Street, 077125 Magurele, Ilfov (Romania); Mateescu, A. O. [Horia Hulubei National Institute of Physics and Nuclear Engineering, 30 Reactorului Street, 077125 Magurele, Ilfov (Romania); Dumitru, V.; Costea, S. [Honeywell Romania S.R.L., Sensors and Wireless Laboratory Bucharest, 3 George Constantinescu Street, 020339 Bucharest (Romania)

2014-10-21T23:59:59.000Z

168

Tunable Morphologies from Charged Block Copolymers  

SciTech Connect (OSTI)

The bulk morphologies formed by a new class of charged block copolymers, 75 vol % fluorinated polyisoprene (FPI) 25 vol% sulfonated polystyrene (PSS) with 50% sulfonation, are characterized, and the fundamental underlying forces that promote the self-assembly processes are elucidated. The results show how the bulk morphologies are substantially different from their uncharged diblock counterparts (PS-PI) and also how morphology can be tuned with volume fraction of the charged block and the casting solvent. A physical understanding based on the underlying strong electrostatic interactions between the charged block and counterions is obtained using Monte Carlo (MC) and Molecular Dynamics (MD) simulations. The 75/25 FPI-PSS shows hexagonal morphologies with the minority blocks (PSS) forming the continuous phase due to charge percolation and the FPI blocks arranged in hexagonal cylinders. Some long-range order can be sustained even if lipophobicity is increased (addition of water), albeit with lower dimensional structures. However, thermal annealing provides sufficient energy to disrupt the percolated charges and promotes aggregation of ionic sites which leads to a disordered system. Diverse and atypical morphologies are readily accessible by simply changing the number distribution of the charges on PSS block.

Goswami, Monojoy [ORNL; Sumpter, Bobby G [ORNL; Mays, Jimmy [ORNL; Messman, Jamie M [ORNL

2010-01-01T23:59:59.000Z

169

Biophysical Journal Volume 68 March 1995 936-945 Anesthetics Alter the Physical and Functional Properties of the  

E-Print Network [OSTI]

Properties of the Ca-ATPase in Cardiac Sarcoplasmic Reticulum Brad S. Karon,* Lisa M. Geddis,* Howard Kutchai). Lidocaine inhibited and aggregated the Ca-ATPase in cardiac SR. Micromolar calcium or 0.5 M lithium chloride protected against lidocaine-induced inhibition, indicating that electrostatic interactions are essential

Thomas, David D.

170

Physical Protection  

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

This Manual establishes requirements for the physical protection of interests under the U.S. Department of Energys (DOEs) purview ranging from facilities, buildings, Government property, and employees to national security interests such as classified information, special nuclear material (SNM), and nuclear weapons. Cancels Section A of DOE M 470.4-2 Chg 1. Canceled by DOE O 473.3.

2009-07-23T23:59:59.000Z

171

Vesicular Horizon Distribution, Properties, and Pedogenic Processes in Deserts of the Western United States  

E-Print Network [OSTI]

of physical-properties of coppice dune and vesicular duneof physical-properties of coppice dune and vesicular duneof physical-properties of coppice dune and vesicular dune

Turk, Judith Katherine

2012-01-01T23:59:59.000Z

172

APPLIED PHYSICS APPLIED PHYSICS  

E-Print Network [OSTI]

MSc APPLIED PHYSICS #12;MSc APPLIED PHYSICS This taught Masters course is based on the strong research in Applied Physics in the University's Department of Physics. The department has an impressive photonics and quantum optics, Physics and the Life Sciences, and solid state physics. The knowledge gained

Mottram, Nigel

173

Optical and Physical Properties from Primary On-Road Vehicle ParticleEmissions And Their Implications for Climate Change  

SciTech Connect (OSTI)

During the summers of 2004 and 2006, extinction and scattering coefficients of particle emissions inside a San Francisco Bay Area roadway tunnel were measured using a combined cavity ring-down and nephelometer instrument. Particle size distributions and humidification were also measured, as well as several gas phase species. Vehicles in the tunnel traveled up a 4% grade at a speed of approximately 60 km h{sup -1}. The traffic situation in the tunnel allows the apportionment of emission factors between light duty gasoline vehicles and diesel trucks. Cross-section emission factors for optical properties were determined for the apportioned vehicles to be consistent with gas phase and particulate matter emission factors. The absorption emission factor (the absorption cross-section per mass of fuel burned) for diesel trucks (4.4 {+-} 0.79 m{sup 2} kg{sup -1}) was 22 times larger than for light-duty gasoline vehicles (0.20 {+-} 0.05 m{sup 2} kg{sup -1}). The single scattering albedo of particles - which represents the fraction of incident light that is scattered as opposed to absorbed - was 0.2 for diesel trucks and 0.3 for light duty gasoline vehicles. These facts indicate that particulate matter from motor vehicles exerts a positive (i.e., warming) radiative climate forcing. Average particulate mass absorption efficiencies for diesel trucks and light duty gasoline vehicles were 3.14 {+-} 0.88 m{sup 2} g{sub PM}{sup -1} and 2.9 {+-} 1.07 m{sup 2} g{sub PM}{sup -1}, respectively. Particle size distributions and optical properties were insensitive to increases in relative humidity to values in excess of 90%, reinforcing previous findings that freshly emitted motor vehicle particulate matter is hydrophobic.

Strawa, A.W.; Kirchstetter, T.W.; Hallar, A.G.; Ban-Weiss, G.A.; McLaughlin, J.P.; Harley, R.A.; Lunden, M.M.

2009-01-23T23:59:59.000Z

174

Effects of potassium and calcination pretreatment on the adsorption and chemical/physical properties of Fe/SiO/sub 2/  

SciTech Connect (OSTI)

Studies of the effects of potassium on CO, CO/sub 2/, and hydrogen adsorptions on iron indicate that potassium promotion increases heats of adsorption of CO and H/sub 2/, enhances the rate of CO dissociation, increases CO saturation coverage, and decreases the CO sticking coefficient. The purpose of this work was to investigate the effects of potassium promoter and calcination of the stoichiometries and kinetics of CO, CO/sub 2/, and H/sub 2/ adsorptions on Fe/SiO/sub 2/ and to relate these effects to changes in the physical and chemical properties of the catalyst. The results reveal important differences in behavior for CO and H/sub 2/ adsorptions on precalcined Fe/SiO/sub 2/ and Fe/K/SiO/sub 2/ compared to the adsorptions on single crystal or polycrystalline iron, which may relate to changes in the surface and bulk properties of iron such as potassium coverage and extent of reduction. 33 references.

Rankin, J.L.; Bartholomew, C.H.

1986-08-01T23:59:59.000Z

175

Physical Consequences of a Momenta-Transfering Particle Theory of Induced Gravity and New Measurements Indicating Variation from Inverse Square Law at Length Scale of .1 mm: Statistical Time Properties of Gravitational Interaction and Analysis Thereof  

E-Print Network [OSTI]

This work presents physical consequences of our theory of induced gravity (Ref.1) regarding: 1) the requirement to consider shape and materials properties when calculating graviton cross section collision area; 2) use of Special Relativity; 3) implications regarding the shape of cosmos; 4) comparison to explanations using General Relativity; 5) properties of black holes; 6) relationship to the strong force and the theorized Higgs boson; 7) the possible origin of magnetic attraction; 8) new measurements showing variation from gravitational inverse square behavior at length scales of 0.1 mm and relationship to the Cosmological constant, and proof of the statistical time properties of the gravitational interaction.

Gary Christopher Vezzoli

2001-04-04T23:59:59.000Z

176

Hypernuclear physics  

SciTech Connect (OSTI)

A brief overview of progress made in the study of hypernuclear physics is presented. The use of ..lambda..-hypernuclei to study properties of conventional (nonstrange) nuclei is explored. Our knowledge of the hyperon-nucleon force is reviewed. Anecdotal examples of interesting hypernuclear phenomena are discussed. The status of ..sigma..-hypernuclei is considered along with a search for the ''H'' dibaryon. 30 refs., 10 figs.

Gibson, B.F.

1987-01-01T23:59:59.000Z

177

Effect of the substrate temperature on the physical properties of molybdenum tri-oxide thin films obtained through the spray pyrolysis technique  

SciTech Connect (OSTI)

Polycrystalline molybdenum tri-oxide thin films were prepared using the spray pyrolysis technique; a 0.1 M solution of ammonium molybdate tetra-hydrated was used as a precursor. The samples were prepared on Corning glass substrates maintained at temperatures ranging between 423 and 673 K. The samples were characterized through micro Raman, X-ray diffraction, optical transmittance and DC electrical conductivity. The species MoO{sub 3} (H{sub 2}O){sub 2} was found in the sample prepared at a substrate temperature of 423 K. As the substrate temperature rises, the water disappears and the samples crystallize into {alpha}-MoO{sub 3}. The optical gap diminishes as the substrate temperature rises. Two electrical transport mechanisms were found: hopping under 200 K and intrinsic conduction over 200 K. The MoO{sub 3} films' sensitivity was analyzed for CO and H{sub 2}O in the temperature range 160 to 360 K; the results indicate that CO and H{sub 2}O have a reduction character. In all cases, it was found that the sensitivity to CO is lower than that to H{sub 2}O. - Highlights: Black-Right-Pointing-Pointer A low cost technique is used which produces good material. Black-Right-Pointing-Pointer Thin films are prepared using ammonium molybdate tetra hydrated. Black-Right-Pointing-Pointer The control of the physical properties of the samples could be done. Black-Right-Pointing-Pointer A calculation method is proposed to determine the material optical properties. Black-Right-Pointing-Pointer The MoO{sub 3} thin films prepared by spray pyrolysis could be used as gas sensor.

Martinez, H.M. [Grupo de Materiales con Aplicaciones Tecnologicas, Departamento de Fisica Universidad Nacional de Colombia sede Bogota (Colombia)] [Grupo de Materiales con Aplicaciones Tecnologicas, Departamento de Fisica Universidad Nacional de Colombia sede Bogota (Colombia); Torres, J., E-mail: njtorress@unal.edu.co [Grupo de Materiales con Aplicaciones Tecnologicas, Departamento de Fisica Universidad Nacional de Colombia sede Bogota (Colombia); Lopez Carreno, L.D. [Grupo de Materiales con Aplicaciones Tecnologicas, Departamento de Fisica Universidad Nacional de Colombia sede Bogota (Colombia)] [Grupo de Materiales con Aplicaciones Tecnologicas, Departamento de Fisica Universidad Nacional de Colombia sede Bogota (Colombia); Rodriguez-Garcia, M.E. [Departamento de Nanotecnologia, Centro de Fisica Aplicada y Tecnologia Avanzada, Universidad Nacional Autonoma de Mexico, Campus Juriquilla, Queretaro, Qro., Mexico (Colombia)] [Departamento de Nanotecnologia, Centro de Fisica Aplicada y Tecnologia Avanzada, Universidad Nacional Autonoma de Mexico, Campus Juriquilla, Queretaro, Qro., Mexico (Colombia)

2013-01-15T23:59:59.000Z

178

Single-crystal studies of the Chevrel-phase superconductor La{sub x}Mo{sub 6}Se{sub 8}. 2: Physical and superconducting properties  

SciTech Connect (OSTI)

Single crystals of La{sub x}Mo{sub 6}Se{sub 8} have been grown and some of their magnetic, transport, and superconducting properties studied. The electrical resistivity is characterized by its high value at room temperature, its low residual resistivity ratio, and a pronounced negative curvature at high temperatures. Comparison with the isostructural compounds Mo{sub 3}Se{sub 4} (Mo{sub 6}Se{sub 8}) and LaMo{sub 6}S{sub 8} shows that this behavior is due to structural as well as to extrinsic features (e.g., brittleness due to weak intercluster bondings). The position of the Fermi level near a peak of the density of states plays an important role in the normal-state physical properties, fixing the functional forms of both resistivity and magnetic susceptibility. The superconducting state is mainly characterized by a strong lanthanum concentration dependence of the critical temperature {Tc}, by quite definite granular effects, and by a very high critical field (H{sub c2}(0) {approximately} 55 T). The intragrain critical current density, as estimated by magnetic measurements, is relatively high (4 {times} 10{sup 4} A/cm{sup 2} at zero field and 1.7 K), three times larger than the one obtained for the void compound Mo{sub 3}Se{sub 4}. The fact is due to a higher density of pinning centers in the ternary compound because of microstructural features such as microcracks or crystal defects caused by the extreme brittleness of the crystals.

Pena, O.; Le Berre, F.; Padiou, J.; Marchand, T. [Univ. de Rennes I (France). Chimie du Solide et Inorganique Moleculaire] [Univ. de Rennes I (France). Chimie du Solide et Inorganique Moleculaire; Horyn, R.; Wojakowski, A. [Polish Academy of Sciences, Wroclaw (Poland). Inst. of Low Temperature and Structure Research] [Polish Academy of Sciences, Wroclaw (Poland). Inst. of Low Temperature and Structure Research

1998-03-01T23:59:59.000Z

179

Disentangling the Cosmic Web I: Morphology of Isodensity Contours  

E-Print Network [OSTI]

We apply Minkowski functionals and various derived measures to decipher the morphological properties of large-scale structure seen in simulations of gravitational evolution. Minkowski functionals of isodensity contours serve as tools to test global properties of the density field. Furthermore, we identify coherent objects at various threshold levels and calculate their partial Minkowski functionals. We propose a set of two derived dimensionless quantities, planarity and filamentarity, which reduce the morphological information in a simple and intuitive way. Several simulations of the gravitational evolution of initial power-law spectra provide a framework for systematic tests of our method.

Jens Schmalzing; Thomas Buchert; Adrian L. Melott; Varun Sahni; B. S. Sathyaprakash; Sergei F. Shandarin

1999-07-14T23:59:59.000Z

180

Cement technology for borehole plugging: interim report on the effects of fly ash and salt on the physical properties of cementitious solids  

SciTech Connect (OSTI)

Results of initial studies of a systematic investigation to determine the effects of fly ash and salt on the physical properties of pozzolanic concretes and saltcretes are reported. Addition of fly ash to mortars decreased the set time and bleed characteristics and increased the compressive strength and permeability, but it had very little effect on the density or the thermal conductivity of the solid. The magnitude of these effects was only slightly related to the lime content of the fly ash. In the case of saltcretes, low-lime fly ash slightly decreased the set time and the bleed characteristics of the wet mix. However, a high-lime fly ash doubled the set time and decreased the bleed characteristics to essentially zero. The compressive strength of saltcretes was increased by the addition of fly ash and was independent of the lime content. Such additions had little effect on the thermal conductivity or density. The thermal conductivities of cement pastes containing fly ash showed a near-linear relationship with the density of the resulting solids. In the case of mortars, the thermal conductivity decreased with increasing temperature and showed some hysteresis in the initial heating cycle. After the first cycle, the thermal conductivity decreased from about 1.32 W/m.K at 350/sup 0/K to 1.27 W/m.K at 475/sup 0/K.

Moore, J.G.; Morgan, M.T.; McDaniel, E.W.; Greene, H.B.; West, W.A.

1980-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Morphological Evolution of Galaxies to z=4  

E-Print Network [OSTI]

Galaxies have clearly evolved since the universe was 1 Gyr old, but methods to trace and quantify this evolution are still in their infancy. In this paper I demonstrate that with the careful use of a `physical morphology' it is possible to determine quantitatively how the process of galaxy evolution is occurring out to z=4. Using a system of parameters that traces star formation and galaxy interactions, I show how distinct galaxy populations at high-z can be identified in deep high-resolution optical and NIR images. These tools are also used to measure a potential merger fraction of galaxies from 0physical classification of galaxies.

Christopher J. Conselice

2000-12-01T23:59:59.000Z

182

Opening and Closing Operators in Fuzzy Morphology Using  

E-Print Network [OSTI]

and their properties have found considerable applications in image analysis and pattern recognition. #12;FUZZY LOGICAL arise within each level of image analysis and pattern recognition. · The method used in feature, CONJUNCTIVE UNINORMS #12;FUZZY MORPHOLOGICAL OPERATORS (FMO) An n-dimensional gray-scale image is model

Illes Balears, Universitat de les

183

Effects of variations in rate of temperature rise, curing temperature and size of specimen on selected physical properties of concrete made with type III cement and steam cured at atmospheric pressure  

E-Print Network [OSTI]

made with Type III Portland cement, 2. to determine the interrelationships of the physical pro- perties of the steam cured concrete as exhibited by the variation in size of the test specimens, 3. to compare certain physical properties of steam cured... it was believed that Type III Portland cement would respond favorably, to temperatures 1n the higher ranges. Due to this same reasoning the rate of temperature rise was varied between 40 F, 60o F and 80 F per hour. These oombinations of curing temperature...

Aldridge, Weldon Wayne

1958-01-01T23:59:59.000Z

184

Determination of monolayer-protected gold nanoparticle ligand–shell morphology using NMR  

E-Print Network [OSTI]

It is accepted that the ligand shell morphology of nanoparticles coated with a monolayer of molecules can be partly responsible for important properties such as cell membrane penetration and wetting. When binary mixtures ...

Liu, Xiang

185

HST/WFC3 OBSERVATIONS OF LOW-MASS GLOBULAR CLUSTERS AM 4 AND PALOMAR 13: PHYSICAL PROPERTIES AND IMPLICATIONS FOR MASS LOSS  

SciTech Connect (OSTI)

We investigate the loss of low-mass stars in two of the faintest globular clusters known, AM 4 and Palomar 13 (Pal 13), using HST/WFC3 F606W and F814W photometry. To determine the physical properties of each cluster—age, mass, metallicity, extinction, and present day mass function (MF)—we use the maximum likelihood color-magnitude diagram (CMD) fitting program MATCH and the Dartmouth, Padova, and BaSTI stellar evolution models. For AM 4, the Dartmouth models provide the best match to the CMD and yield an age of >13 Gyr, metallicity log Z/Z {sub ?} = –1.68 ± 0.08, a distance modulus (m – M) {sub V} = 17.47 ± 0.03, and reddening A{sub V} = 0.19 ± 0.02. For Pal 13 the Dartmouth models give an age of 13.4 ± 0.5 Gyr, log Z/Z {sub ?} = –1.55 ± 0.06, (m – M) {sub V} = 17.17 ± 0.02, and A{sub V} = 0.43 ± 0.01. We find that the systematic uncertainties due to choice in assumed stellar model greatly exceed the random uncertainties, highlighting the importance of using multiple stellar models when analyzing stellar populations. Assuming a single-sloped power-law MF, we find that AM 4 and Pal 13 have spectral indices ? = +0.68 ± 0.34 and ? = –1.67 ± 0.25 (where a Salpeter MF has ? = +1.35), respectively. Comparing our derived slopes with literature measurements of cluster integrated magnitude (M{sub V} ) and MF slope indicates that AM 4 is an outlier. Its MF slope is substantially steeper than clusters of comparable luminosity, while Pal 13 has an MF in line with the general trend. We discuss both primordial and dynamical origins for the unusual MF slope of AM 4 and tentatively favor the dynamical scenario. However, MF slopes of more low luminosity clusters are needed to verify this hypothesis.

Hamren, Katherine M.; Smith, Graeme H.; Guhathakurta, Puragra [Department of Astronomy and Astrophysics, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064 (United States); Dolphin, Andrew E. [Raytheon, 1151 East Hermans Road, Tucson, AZ 85756 (United States); Weisz, Daniel R. [Department of Astronomy, Box 351580, University of Washington, Seattle, WA 98195 (United States); Rajan, Abhijith [School of Earth and Space Exploration, Arizona State University, 781 East Terrace Road, Tempe, AZ 85287 (United States); Grillmair, Carl J., E-mail: khamren@ucolick.org [Spitzer Science Center, California Institute of Technology, Mail Stop 220-6, Pasadena, CA 91125 (United States)

2013-11-01T23:59:59.000Z

186

Top physics at CDF  

SciTech Connect (OSTI)

Precision studies of top quark properties are a primary goal of the Run II physics program at the Fermilab Tevatron. Marking the first stages of this program, the CDF collaboration presents recent results on top pair production cross section, single top physics and top mass, using between 109 and 200 pb{sup -1} of Run II data.

Julia Thom

2004-06-24T23:59:59.000Z

187

Physics of Binary Information  

E-Print Network [OSTI]

Basic concepts of theoretical particle physics, including quantum mechanics and Poincar\\'e invariance, the leptonic mass spectrum and the proton mass, can be derived, without reference to first principles, from intrinsic properties of the simplest elements of information represented by binary data. What we comprehend as physical reality is, therefore, a reflection of mathematically determined logical structures, built from elements of binary data.

Walter Smilga

2005-05-05T23:59:59.000Z

188

Nuclear physics and cosmology  

SciTech Connect (OSTI)

There are important aspects of Cosmology, the scientific study of the large scale properties of the universe as a whole, for which nuclear physics can provide insights. Here, we will focus on Standard Big-Bang Nucleosynthesis and we refer to the previous edition of the School [1] for the aspects concerning the variations of constants in nuclear cosmo-physics.

Coc, Alain [Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), CNRS/IN2P3, Université Paris Sud 11, UMR 8609, Bâtiment 104, F-91405 Orsay Campus (France)

2014-05-09T23:59:59.000Z

189

Robust Morphological Measures for Large-Scale Structure  

E-Print Network [OSTI]

A complete family of statistical descriptors for the morphology of large--scale structure based on Minkowski--Functionals is presented. These robust and significant measures can be used to characterize the local and global morphology of spatial patterns formed by a coverage of point sets which represent galaxy samples. Basic properties of these measures are highlighted and their relation to the `genus statistics' is discussed. Test models like a Poissonian point process and samples generated from a Voronoi--model are put into perspective.

T. Buchert

1994-12-17T23:59:59.000Z

190

PHYSICAL REVIEW B 84, 075213 (2011) Structural diversity and electronic properties of Cu2SnX3 (X = S, Se)  

E-Print Network [OSTI]

Physical Sciences (MOE) and Surface Physics, Fudan University, Shanghai 200433, China 2 Key Laboratory of Polar Materials and Devices (MOE), East China Normal University, Shanghai 200241, China 3 Centre solar-cell absorbers. DOI: 10.1103/PhysRevB.84.075213 PACS number(s): 61.50.Ah, 71.20.Nr, 71.22.+i, 71

Gong, Xingao

2011-01-01T23:59:59.000Z

191

DEPARTMENT OF PHYSICS Physics 32100  

E-Print Network [OSTI]

DEPARTMENT OF PHYSICS Syllabus Physics 32100 Modern Physics for Engineers Designation to one- electron atoms, atomic shell structure and periodic table; nuclear physics, relativity. Prerequisites: Prereq.: Physics 20800 or equivalent, Math 20300 or 20900 (elective for Engineering students

Lombardi, John R.

192

DEPARTMENT OF PHYSICS Physics 21900  

E-Print Network [OSTI]

DEPARTMENT OF PHYSICS Syllabus Physics 21900 Physics for Architecture Students Designation suggested material: Giancoli, Physics, Principles with Applications (6th ed.) (required), Prentice Hall Giancoli, Physics, Principles with Applications, Student Guide (6th ed.) (optional), Prentice Hall Course

Lombardi, John R.

193

DEPARTMENT OF PHYSICS Physics 20300  

E-Print Network [OSTI]

DEPARTMENT OF PHYSICS Syllabus Physics 20300 General Physics Designation: Required Undergraduate Catalog description: For majors in the life sciences (biology, medicine, dentistry, psychology, physical therapy) and for liberal arts students. Fundamental ideas and laws of physics from mechanics to modern

Lombardi, John R.

194

EXPLORING THE MORPHOLOGY OF RAVE STELLAR SPECTRA  

SciTech Connect (OSTI)

The RAdial Velocity Experiment (RAVE) is a medium-resolution (R {approx} 7500) spectroscopic survey of the Milky Way that has already obtained over half a million stellar spectra. They present a randomly selected magnitude-limited sample, so it is important to use a reliable and automated classification scheme that identifies normal single stars and discovers different types of peculiar stars. To this end, we present a morphological classification of {approx}350, 000 RAVE survey stellar spectra using locally linear embedding, a dimensionality reduction method that enables representing the complex spectral morphology in a low-dimensional projected space while still preserving the properties of the local neighborhoods of spectra. We find that the majority of all spectra in the database ({approx} 90%-95%) belong to normal single stars, but there is also a significant population of several types of peculiars. Among them, the most populated groups are those of various types of spectroscopic binary and chromospherically active stars. Both of them include several thousands of spectra. Particularly the latter group offers significant further investigation opportunities since activity of stars is a known proxy of stellar ages. Applying the same classification procedure to the sample of normal single stars alone shows that the shape of the projected manifold in two-dimensional space correlates with stellar temperature, surface gravity, and metallicity.

Matijevic, G.; Zwitter, T. [Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana (Slovenia); Bienayme, O.; Siebert, A. [Observatoire de Strasbourg, Universite de Strasbourg, CNRS, 11 rue de l'universite, 67000 Strasbourg (France); Bland-Hawthorn, J. [Sydney Institute for Astronomy, University of Sydney, NSW 2006 (Australia); Boeche, C.; Grebel, E. K. [Astronomisches Rechen-Institut, Zentrum fuer Astronomie der Universitaet Heidelberg, Moenchhofstr. 12-14, 69120 Heidelberg (Germany); Freeman, K. C. [Research School of Astronomy and Astrophysics, Australia National University, Weston Creek, Canberra, ACT 2611 (Australia); Gibson, B. K. [Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 3TE (United Kingdom); Gilmore, G. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA (United Kingdom); Helmi, A. [Kapteyn Astronomical Institute, University of Groningen, P.O. Box 800, 9700 AV Groningen (Netherlands); Munari, U. [INAF Osservatorio Astronomico di Padova, 36012 Asiago (Italy); Navarro, J. [Department of Physics and Astronomy, University of Victoria, Victora, BC V8P 5C2 (Canada); Parker, Q. A.; Reid, W. [Department of Physics and Astronomy, Macquarie University, NSW 2109 (Australia); Seabroke, G. [Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking RH5 6NT (United Kingdom); Siviero, A. [Department of Astronomy, Padova University, Vicolo dell'Osservatorio 2, 35122 Padova (Italy); Steinmetz, M.; Williams, M. [Leibniz-Institut fuer Astrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam (Germany); Watson, F. G., E-mail: gal.matijevic@fmf.uni-lj.si [Australian Astronomical Observatory, P.O. Box 296, Epping, NSW 2121 (Australia); and others

2012-06-01T23:59:59.000Z

195

@Why Physics Comprehensive Physics Major.  

E-Print Network [OSTI]

@Why Physics Comprehensive Physics Major. From the basic laws of physics to the resulting emergent behavior, physics studies what the universe is made of and how it works. As a Physics major that surrounds us, to the structure and evolution of the entire universe. We offer three degrees in Physics

Yoo, S. J. Ben

196

Structural properties and glass transition in Aln clusters Institute of Solid State Physics, Academia Sinica, P.O. Box 1129, 230031-Hefei, People's Republic of China  

E-Print Network [OSTI]

heating. In fact, the existence of a disordered structure as the low-energy configuration of the metal for Theoretical Physics, Chinese Center of Advanced Science and Technology (World Laboratory), Box 8730, Beijing the Gupta n-body potential was used. In the studies on the thermal behavior of metal clusters by Bulgac

Gong, Xingao

197

Bridging properties of multiblock copolymers.  

SciTech Connect (OSTI)

Using self-consistent field theory, we attempt to elucidate the links between microscopically determined properties, such as the bridging fraction of chains, and mechanical properties of multiblock copolymer materials. We determine morphological aspects such as period and interfacial width and calculate the bridging fractions, and compare with experimental data .

Rasmussen, K. O. (Kim O.); Kober, E. M. (Edward M.); Lookman, T. (Turab); Saxena, A. B. (Avadh B.)

2003-01-01T23:59:59.000Z

198

Journal of the Korean Physical Society, Vol. 50, No. 6, June 2007, pp. 18941898 Investigation of the p-GaN Ohmic Contact Property  

E-Print Network [OSTI]

of the p-GaN Ohmic Contact Property by Using a Synchrotron Radiation Analysis T. H. Kim LG Electronics. Park, J. S. Ha, J. H. Jang and J. S. Lee LG Electronics Institute of Technology, Seoul 137-724 H. J

Boo, Jin-Hyo

199

Log on to UW-ACE (http://uwace.uwaterloo.ca) to view, print, or download this document. CHEM 120 -Physical and Chemical Properties of Matter -Winter 2010  

E-Print Network [OSTI]

: The stoichiometry of compounds and chemical reactions. Properties of gases. Periodicity and chemical bonding. Energy to and including page 445 of the text; the MO diagram for CO on p. 446 is wrong! 2p is higher in energy than 2p of your disability. The office is located in Needles Hall, Room 1132. Counselling Services: The University

Le Roy, Robert J.

200

Metal oxide nanostructures with hierarchical morphology  

DOE Patents [OSTI]

The present invention relates generally to metal oxide materials with varied symmetrical nanostructure morphologies. In particular, the present invention provides metal oxide materials comprising one or more metallic oxides with three-dimensionally ordered nanostructural morphologies, including hierarchical morphologies. The present invention also provides methods for producing such metal oxide materials.

Ren, Zhifeng (Newton, MA); Lao, Jing Yu (Saline, MI); Banerjee, Debasish (Ann Arbor, MI)

2007-11-13T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Reactor Physics  

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

Reactor Physics Reactor and nuclear physics is a key area of research at INL. Much of the research done in reactor physics can be separated into one of three categories:...

202

TECHNIQUES FOR THE STUDY OF THE STRUCTURAL PROPERTIES.  

SciTech Connect (OSTI)

The evolution of our understanding of the behavior of oxide nanostructures depends heavily on the structural information obtained from a wide range of physical methods traditionally used in solid state physics, surface science and inorganic chemistry. In this chapter, we describe several techniques that are useful for the characterization of the structural properties of oxide nanostructures: X-ray diffraction (XRD) and scattering, X-ray absorption fine structure (XAFS), Raman spectroscopy, transmission electron microscopy (TEM), scanning tunneling microscopy (STM) and atomic force microscopy (AFM). The ultimate goal is to obtain information about the spatial arrangement of atoms in the nanostructures with precise interatomic distances and bond angles. This may not be possible for complex systems and one may get only partial information about the local geometry or morphology.

FERNANDEZ-GARCIA, M.; RODRIGUEZ, J.A.; MARTINEZ-ARIAS, A.; HANSON, J.C.

2006-06-30T23:59:59.000Z

203

DEPARTMENT OF PHYSICS Physics 32300  

E-Print Network [OSTI]

DEPARTMENT OF PHYSICS Syllabus Physics 32300 Quantum Mechanics for Engineers Designation: required for Physics majors in the Applied Physics Option Undergraduate Catalog description: Basic experiments, wave: Physics 20700 and 20800, Math 39100 and Math 39200 Textbook and other suggested material: Scherrer

Lombardi, John R.

204

DEPARTMENT OF PHYSICS Physics 42200  

E-Print Network [OSTI]

DEPARTMENT OF PHYSICS Syllabus Physics 42200 Biophysics Designation: Undergraduate Catalog and membranes. In depth study of the physical basis of selected systems including vision, nerve transmission. Prerequisites: Prereq.: 1 yr. of Math, 1 yr. of Physics (elective for Physics Majors and Biomedical Engineering

Lombardi, John R.

205

Artificial muscle morphology : structure/property relationships in polypyrrole actuators  

E-Print Network [OSTI]

We seek to improve polypyrrole and other conducting polymer actuators by discovering and exploiting the connection between nanoscale transport events and macroscale active strain. To this end we have used diffraction and ...

Pytel, Rachel Zimet

2007-01-01T23:59:59.000Z

206

Algebraic Properties of Fuzzy Morphological Operators based on  

E-Print Network [OSTI]

, with an involutive negator. Fuzzy set inclusion was used by Zadeh, Sinha & Dougherty, Kitainik and Bandler & Kohout

Illes Balears, Universitat de les

207

Correlation among Channeling, Morphological and Micro-structural Properties  

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 Newcatalyst phases on &gamma;-Al2O3. | EMSLHydrogenin Epitaxial CeO2 Films. |

208

A convenient strategy to functionalize carbon nanotubes with ascorbic acid and its effect on the physical and thermomechanical properties of poly(amide–imide) composites  

SciTech Connect (OSTI)

Multi-walled carbon nanotubes (MWCNTs) were functionalized by ascorbic acid by a fast strategy under microwave irradiation to improve interfacial interactions and dispersion of CNTs in a poly(amide–imide) (PAI) matrix. This technique provides a rapid and economically viable route to produce covalently functionalized CNTs. The as-prepared, new type of functionalized CNTs were analyzed by several techniques. The thermal stabilities and mechanical interfacial properties of CNT/PAI composites were investigated using several techniques. The dispersion state of CNTs in the PAI matrix was observed by field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). The mechanical interfacial property of the composites was significantly increased by the addition of ascorbic acid treated CNTs. The FE-SEM and TEM results showed that the separation and uniform dispersion of CNTs in the PAI matrix. The overview of these recent results is presented. -- Graphical abstract: Presentation of possible interactions of hydrogen bonding between the MWCNT-AS and the PAI chains. Highlights: • Surface functionalization of MWCNTs with ascorbic acid under microwave irradiation. • The MWCNT-AS/PAI composite films were fabricated by solution blending process. • Microstructure and MWCNT states in the composites were studied. • Thermal and mechanical properties of the composite films were evaluated. • Films of different contents of the MWCNTs-AS showed a superior tensile behavior.

Mallakpour, Shadpour, E-mail: mallak@cc.iut.ac.ir [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, I.R. Iran (Iran, Islamic Republic of); Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, I.R. Iran (Iran, Islamic Republic of); Zadehnazari, Amin [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, I.R. Iran (Iran, Islamic Republic of)

2014-03-15T23:59:59.000Z

209

Top Physics at ATLAS  

E-Print Network [OSTI]

The Large Hadron Collider LHC is a top quark factory: due to its high design luminosity, LHC will produce about 200 millions of top quarks per year of operation. The large amount of data will allow to study with great precision the properties of the top quark, most notably cross-section, mass and spin. The Top Physics Working Group has been set up at the ATLAS experiment, to evaluate the precision reach of physics measurements in the top sector, and to study the systematic effects of the ATLAS detector on such measurements. This reports give an overview of the main activities of the ATLAS Top Physics Working Group in 2004.

Marcello Barisonzi

2005-08-02T23:59:59.000Z

210

Top Physics at CDF  

SciTech Connect (OSTI)

We present the recent results of top-quark physics using up to 6 fb{sup -1} of p{bar p} collisions at a center of mass energy of {radical}s = 1.96 TeV analyzed by the CDF collaboration. Thanks to this large data sample, precision top quark measurements are now a reality at the Tevatron. Further, several new physics signals could appear in this large dataset. We will present the latest measurements of top quark intrinsic properties as well as direct searches for new physics in the top sector.

Moon, Chang-Seong

2011-06-01T23:59:59.000Z

211

Ab initio calculations of the physical properties of transition metal carbides and nitrides and possible routes to high-T{sub c} superconductivity  

SciTech Connect (OSTI)

We report ab initio linear-response calculations of the phonon spectra and the electron-phonon interaction for several transition metal carbides and nitrides in a NaCl-type structure. For NbC, the kinetic, optical, and superconducting properties are calculated in detail at various pressures and the normal-pressure results are found to agree well with the experiment. Factors accounting for the relatively low critical temperatures T{sub c} in transition metal compounds with light elements are considered and the possible ways of increasing T{sub c} are discussed.

Maksimov, E. G., E-mail: maksimov@lpi.ru; Ebert, S. V. [Lebedev Physics Institute (Russian Federation); Magnitskaya, M. V.; Karakozov, A. E. [Vereshchagin Institute for High Pressure Physics (Russian Federation)

2007-10-15T23:59:59.000Z

212

Remixing physical objects through tangible tools  

E-Print Network [OSTI]

In this document we present new tools for remixing physical objects. These tools allow users to copy, edit and manipulate the properties of one or more objects to create a new physical object. We already have these ...

Follmer, Sean (Sean Weston)

2011-01-01T23:59:59.000Z

213

DEPARTMENT OF PHYSICS Physics 35400  

E-Print Network [OSTI]

DEPARTMENT OF PHYSICS Syllabus Physics 35400 Electricity and Magnetism II Designation potentials and radiation, special relativity. 3 HR./WK.; 3 CR. Prerequisites: Prereq.: Physics 35300; pre- or coreq.: Math 39200 (required for Physics majors, except those in the Biomedical Option). Textbook

Lombardi, John R.

214

Photon Physics in ALICE  

E-Print Network [OSTI]

We give an overview of photon physics which will be studied by the ALICE experiment in proton-proton and heavy ion collisions at LHC. We compare properties of ALICE photon detectors and estimate their ability to measure neutral meson and direct photon spectra as well as gamma-hadron and gamma-jet correlations in pp and Pb+Pb collisions.

D. Peressounko; Y. Kharlov; for the ALICE collaboration

2009-07-16T23:59:59.000Z

215

Morphological Statistics of the Cosmic Web  

E-Print Network [OSTI]

We report the {\\em first} systematic study of the supercluster-void network in the $\\Lambda$CDM concordance cosmology treating voids and superclusters on an equal footing. We study the dark matter density field in real space smoothed with the $L_s = 5$ \\hm1 Mpc Gaussian window. Superclusters and voids are defined as individual members of over-dense and under-dense excursion sets respectively. We determine the morphological properties of the cosmic web at a large number of dark matter density levels by computing Minkowski functionals for every supercluster and void. At the adopted smoothing scale individual superclusters totally occupy no more than about 5% of the total volume and contain no more than 20% of mass if the largest supercluster is excluded. Likewise, individual voids totally occupy no more than 14% of volume and contain no more than 4% of mass if the largest void is excluded. The genus of individual superclusters can be $\\sim 5$ while the genus of individual voids reaches $\\sim 55$, implying significant amount of substructure in superclusters and especially in voids. Large voids are typically distinctly non-spherical.

Sergei F. Shandarin

2004-05-28T23:59:59.000Z

216

Synthesis, characterization and physical properties of the skutterudites Yb{sub x}Fe{sub 2}Ni{sub 2}Sb{sub 12} (0{<=}x{<=}0.4)  

SciTech Connect (OSTI)

The skutterudites Yb{sub x}Fe{sub 2}Ni{sub 2}Sb{sub 12} (0{<=}x{<=}0.4) have been prepared by solid-state reaction and characterised by powder X-ray diffraction. The compounds crystallise in the cubic space group Im3{sup Macron} (a Almost-Equal-To 9.1 A) with Yb atoms partially filling the voids in the skutterudite framework. A neutron time-of-flight diffraction experiment for Fe{sub 2}Ni{sub 2}Sb{sub 12} confirms the disorder of Fe and Ni atoms on the transition-metal site. Electrical resistivity, Seebeck coefficient and thermal conductivity measurements indicate that the thermoelectric performance of the skutterudites shows a marked dependence on the Yb content. Magnetic measurements over the temperature range 2{<=}T/K{<=}300 show paramagnetic behaviour for all compounds. Decomposition studies under an oxidising atmosphere at elevated temperatures have also been carried out by thermogravimetric analysis. - Graphical abstract: The filled skutterudites Yb{sub x}Fe{sub 2}Ni{sub 2}Sb{sub 12} have been prepared by solid-state reaction and characterised by powder X-ray diffraction. The thermoelectric performance depends strongly on the Yb content. The physical properties and thermal stability of the compounds are further discussed in comparison with the current state-of-the art thermoelectric skutterudites. Highlights: Black-Right-Pointing-Pointer A new series of skutterudites has been prepared and characterised. Black-Right-Pointing-Pointer Physical properties are affected by the degree of Yb filling. Black-Right-Pointing-Pointer The highest thermoelectric performance is found for Yb{sub 0.15}Fe{sub 2}Ni{sub 2}Sb{sub 12}. Black-Right-Pointing-Pointer The skutterudites decompose in air above 550 K.

Kaltzoglou, Andreas; Vaqueiro, Paz [Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom)] [Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Knight, Kevin S. [ISIS Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0OX (United Kingdom)] [ISIS Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0OX (United Kingdom); Powell, Anthony V., E-mail: a.v.powell@hw.ac.uk [Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom)

2012-09-15T23:59:59.000Z

217

The Use of Chemical and Physical Properties for Characterization of Strontium Distribution Coefficients at the Idaho National Engineering and Environmental Laboratory, Idaho  

SciTech Connect (OSTI)

The U.S. Geological Survey and Idaho State University, in cooperation with the U.S. Department of Energy, conducted a study to determine strontium distribution coefficients (Kds) of surficial sediments at the Idaho National Engineering and Environmental Laboratory (INEEL). Batch experimental techniques were used to determine experimental Kds of 20 surficial-sediment samples from the INEEL. The Kds describe the distribution of a solute between the solution and solid phase. A best-fit model was obtained using a four-variable data set consisting of surface area, manganese oxide concentration, specific conductance, and pH. Application of the model to an independent split of the data resulted in an average relative error of prediction of 20 percent and a correlation coefficient of 0.921 between predicted and observed strontium Kds. Chemical and physical characteristics of the solution and sediment that could successfully predict the Kd values were identified. Prediction variable select ion was limited to variables which are either easily determined or have available tabulated characteristics. The selection criterion could circumvent the need for time- and labor-intensive laboratory experiments and provide an alternate faster method for estimating strontium Kds.

J. J. Rosentreter; R. Nieves; J. Kalivas; J. P. Rousseau; R. C. Bartholomay

1999-06-01T23:59:59.000Z

218

Manoj Shukla Assistant Professor of Environmental Soil Physics,  

E-Print Network [OSTI]

Manoj Shukla Assistant Professor of Environmental Soil Physics, Plant and Environmental Sciences University, India Professional Experience 2005-Present Assistant Professor of Environmental Soil Physics, New Interests Assessment and modeling of chemical fate and transport and physical, chemical properties of soil

Johnson, Eric E.

219

physics | EMSL  

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

physics physics Leads No leads are available at this time. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOxCeO2. Abstract: Pulsing 15N18O onto...

220

Electroweak Physics  

E-Print Network [OSTI]

Work on electroweak precision calculations and event generators for electroweak physics studies at current and future colliders is summarized.

W. Hollik

2005-01-26T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Synthesis, crystal and electronic structure, and physical properties of the new lanthanum copper telluride La{sub 3}Cu{sub 5}Te{sub 7}  

SciTech Connect (OSTI)

The new lanthanum copper telluride La{sub 3}Cu{sub 5-x}Te{sub 7} has been obtained by annealing the elements at 1073 K. Single-crystal X-ray diffraction studies revealed that the title compound crystallizes in a new structure type, space group Pnma (no. 62) with lattice dimensions of a=8.2326(3) A, b=25.9466(9) A, c=7.3402(3) A, V=1567.9(1) A{sup 3}, Z=4 for La{sub 3}Cu{sub 4.86(4)}Te{sub 7}. The structure of La{sub 3}Cu{sub 5-x}Te{sub 7} is remarkably complex. The Cu and Te atoms build up a three-dimensional covalent network. The coordination polyhedra include trigonal LaTe{sub 6} prisms, capped trigonal LaTe{sub 7} prisms, CuTe{sub 4} tetrahedra, and CuTe{sub 3} pyramids. All Cu sites exhibit deficiencies of various extents. Electrical property measurements on a sintered pellet of La{sub 3}Cu{sub 4.86}Te{sub 7} indicate that it is a p-type semiconductor in accordance with the electronic structure calculations. -- Graphical abstract: Oligomeric unit comprising interconnected CuTe{sub 3} pyramids and CuTe{sub 4} tetrahedra. Display Omitted Research highlights: {yields} La{sub 3}Cu{sub 5-x}Te{sub 7} adopts a new structure type. {yields} All Cu sites exhibit deficiencies of various extents. {yields} The coordination polyhedra include trigonal LaTe{sub 6} prisms, capped trigonal LaTe{sub 7} prisms, CuTe{sub 4} tetrahedra and CuTe{sub 3} pyramids. {yields} La{sub 3}Cu{sub 5-x}Te{sub 7} is a p-type semiconductor.

Zelinska, Mariya; Assoud, Abdeljalil [Department of Chemistry, University of Waterloo, Waterloo, ON, Canada N2L 3G1 (Canada); Kleinke, Holger, E-mail: kleinke@uwaterloo.c [Department of Chemistry, University of Waterloo, Waterloo, ON, Canada N2L 3G1 (Canada)

2011-03-15T23:59:59.000Z

222

Representation of State Property Systems  

E-Print Network [OSTI]

A 'state property system' is the mathematical structure which models an arbitrary physical system by means of its set of states, its set of properties, and a relation of 'actuality of a certain property for a certain state'. We work out a new axiomatization for standard quantum mechanics, starting with the basic notion of state property system, and making use of a generalization of the standard quantum mechanical notion of 'superposition' for state property systems.

Diederik Aerts; Sylvia Pulmannova

2008-11-15T23:59:59.000Z

223

Morphologies of block copolymers composed of charged and neutral blocks  

SciTech Connect (OSTI)

This article reviews current experimental observations and theoretical calculations devoted towards understanding micro-phase separation in charged block copolymer systems. We discuss bulk morphologies in melt and in solution, as well as some of the new emerging research directions. Overall, a comprehensive picture is beginning to emerge on the fundamental role of electrostatics in the microphase separation of charged block copolymers. This understanding provides exciting new insight that may be used to direct targeted structures that endow the materials with desired properties that can have tremendous potential in technological applications.

Kumar, Rajeev [ORNL; Goswami, Monojoy [ORNL; Mays, Jimmy [ORNL; Sumpter, Bobby G [ORNL; Wang, Xiaojun [ORNL

2012-01-01T23:59:59.000Z

224

Modeling morphology evolution during solvent-based fabrication of organic solar cells  

E-Print Network [OSTI]

Solvent-based techniques usually involve preparing dilute blends of electron-donor and electron-acceptor materials dissolved in a volatile solvent. After some form of coating onto a substrate, the solvent evaporates. An initially homogeneous mixture separates into electron-acceptor rich and electron-donor rich regions as the solvent evaporates. Depending on the specifics of the blend and processing conditions different morphologies are typically formed. Experimental evidence consistently confirms that the morphology critically affects device performance. A computational framework that can predict morphology evolution can significantly augment experimental analysis. Such a framework will also allow high throughput analysis of the large phase space of processing parameters, thus yielding insight into the process-structure-property relationships. In this paper, we formulate a computational framework to predict evolution of morphology during solvent-based fabrication of organic thin films. This is accomplished by...

Wodo, Olga

2011-01-01T23:59:59.000Z

225

APPLIED PHYSICS REVIEWS Semi-insulating semiconductor heterostructures: Optoelectronic  

E-Print Network [OSTI]

APPLIED PHYSICS REVIEWS Semi-insulating semiconductor heterostructures: Optoelectronic properties of optoelectronic properties of and uses for semi-insulating semiconductor heterostructures and thin films. The principal optical and optoelectronic properties of semi-insulating epilayers and heterostructures

Nolte, David D.

226

Advanced Technologies for Monitoring CO2 Saturation and Pore Pressure in Geologic Formations: Linking the Chemical and Physical Effects to Elastic and Transport Properties  

SciTech Connect (OSTI)

Ultrasonic P- and S-wave velocities were measured over a range of confining pressures while injecting CO2 and brine into the samples. Pore fluid pressure was also varied and monitored together with porosity during injection. Effective medium models were developed to understand the mechanisms and impact of observed changes and to provide the means for implementation of the interpretation methodologies in the field. Ultrasonic P- and S-wave velocities in carbonate rocks show as much as 20-50% decrease after injection of the reactive CO2-brine mixture; the changes were caused by permanent changes to the rock elastic frame associated with dissolution of mineral. Velocity decreases were observed under both dry and fluid-saturated conditions, and the amount of change was correlated with the initial pore fabrics. Scanning Electron Microscope images of carbonate rock microstructures were taken before and after injection of CO2-rich water. The images reveal enlargement of the pores, dissolution of micrite (micron-scale calcite crystals), and pitting of grain surfaces caused by the fluid- solid chemical reactivity. The magnitude of the changes correlates with the rock microtexture – tight, high surface area samples showed the largest changes in permeability and smallest changes in porosity and elastic stiffness compared to those in rocks with looser texture and larger intergranular pore space. Changes to the pore space also occurred from flow of fine particles with the injected fluid. Carbonates with grain-coating materials, such as residual oil, experienced very little permanent change during injection. In the tight micrite/spar cement component, dissolution is controlled by diffusion: the mass transfer of products and reactants is thus slow and the fluid is expected to be close to thermodynamical equilibrium with the calcite, leading to very little dissolution, or even precipitation. In the microporous rounded micrite and macropores, dissolution is controlled by advection: because of an efficient mass transfer of reactants and products, the fluid remains acidic, far from thermodynamical equilibrium and the dissolution of calcite is important. These conclusions are consistent with the lab observations. Sandstones from the Tuscaloosa formation in Mississippi were also subjected to injection under representative in situ stress and pore pressure conditions. Again, both P- and S-wave velocities decreased with injection. Time-lapse SEM images indicated permanent changes induced in the sandstone microstructure by chamosite dissolution upon injection of CO2-rich brine. After injection, the sandstone showed an overall cleaner microstructure. Two main changes are involved: (a) clay dissolution between grains and at the grain contact and (b) rearrangement of grains due to compaction under pressure Theoretical and empirical models were developed to quantify the elastic changes associated with injection. Permanent changes to the rock frame resulted in seismic velocity-porosity trends that mimic natural diagenetic changes. Hence, when laboratory measurments are not available for a candidate site, these trends can be estimated from depth trends in well logs. New theoretical equations were developed to predict the changes in elastic moduli upon substitution of pore-filling material. These equations reduce to Gassmann’s equations for the case of constant frame properties, low seismic frequencies, and fluid changes in the pore space. The new models also predict the change dissolution or precipitation of mineral, which cannot be described with the conventional Gassmann theory.

Mavko, G.; Vanorio, T.; Vialle, S.; Saxena, N.

2014-03-31T23:59:59.000Z

227

Quantum Physics and Human Language  

E-Print Network [OSTI]

Human languages employ constructions that tacitly assume specific properties of the limited range of phenomena they evolved to describe. These assumed properties are true features of that limited context, but may not be general or precise properties of all the physical situations allowed by fundamental physics. In brief, human languages contain `excess baggage' that must be qualified, discarded, or otherwise reformed to give a clear account in the context of fundamental physics of even the everyday phenomena that the languages evolved to describe. The surest route to clarity is to express the constructions of human languages in the language of fundamental physical theory, not the other way around. These ideas are illustrated by an analysis of the verb `to happen' and the word `reality' in special relativity and the modern quantum mechanics of closed systems.

James B. Hartle

2006-12-19T23:59:59.000Z

228

Probing the evolution and morphology of hard carbon spheres  

SciTech Connect (OSTI)

Monodispersed hard carbon spheres can be synthesized quickly and reproducibly by autogenic reactions of hydrocarbon precursors, notably polyethylene (including plastic waste), at high temperature and pressure. The carbon microparticles formed by this reaction have a unique spherical architecture, with a dominant internal nanometer layered motif, and they exhibit diamond-like hardness and electrochemical properties similar to graphite. In the present study, in-situ monitoring by X-ray diffraction along with electron microscopy, Raman spectroscopy, neutron pair-distribution function analysis, and computational modeling has been used to elucidate the morphology and evolution of the carbon spheres that form from the autogenic reaction of polyethylene at high temperature and pressure. A mechanism is proposed on how polyethylene evolves from a linear chain-based material to a layered carbon motif. Heating the spheres to 2400-2800 °C under inert conditions increases their graphitic character, particularly at the surface, which enhances their electrochemical and tribological properties.

Pol, Vilas G.; Wen, Jianguo; Lau, Kah Chun; Callear, Samantha; Bowron, Daniel T.; Lin, Chi-Kai; Deshmukh, Sanket A.; Sankaranarayanan, Subramanian; Curtiss, Larry A.; David, William; Miller, Dean J.; Thackeray, Michael M.

2014-03-01T23:59:59.000Z

229

Physics Fellow  

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

as Institute of Physics Fellow January 18, 2011 LOS ALAMOS, New Mexico, January 18, 2011-Alan Bishop, Los Alamos National Laboratory's associate director for theory, simulation,...

230

PLA-PHA BLENDS: MORPHOLOGY, THERMAL AND MECHANICAL T. Grard, T. Budtova  

E-Print Network [OSTI]

PLA-PHA BLENDS: MORPHOLOGY, THERMAL AND MECHANICAL PROPERTIES T. Gérard, T. Budtova Mines Paris such as polylactides (PLA) and polyhydoxyalkanoates (PHA) are alternatives to petroleum-based polymers and represent polymers, varying the composition of the blend and preparation conditions. Most of the studies on PLA

Paris-Sud XI, Université de

231

Rock physics at Los Alamos Scientific Laboratory  

SciTech Connect (OSTI)

Rock physics refers to the study of static and dynamic chemical and physical properties of rocks and to phenomenological investigations of rocks reacting to man-made forces such as stress waves and fluid injection. A bibliography of rock physics references written by LASL staff members is given. Listing is by surname of first author. (RWR)

Not Available

1980-01-01T23:59:59.000Z

232

CARBON NANOTUBES: PROPERTIES AND APPLICATIONS  

SciTech Connect (OSTI)

Carbon nanotubes were discovered in 1991 as a minority byproduct of fullerene synthesis. Remarkable progress has been made in the ensuing years, including the discovery of two basic types of nanotubes (single-wall and multi-wall), great strides in synthesis and purification, elucidation of many fundamental physical properties, and important steps towards practical applications. Both the underlying science and technological potential of SWNT can profitably be studied at the scale of individual tubes and on macroscopic assemblies such as fibers. Experiments on single tubes directly reveal many of the predicted quantum confinement and mechanical properties. Semiconductor nanowires have many features in common with nanotubes, and many of the same fundamental and practical issues are in play – quantum confinement and its effect on properties; possible device structures and circuit architectures; thermal management; optimal synthesis, defect morphology and control, etc. In 2000 we began a small effort in this direction, conducted entirely by undergraduates with minimal consumables support from this grant. With DOE-BES approval, this grew into a project in parallel with the carbon nanotube work, in which we studied of inorganic semiconductor nanowire growth, characterization and novel strategies for electronic and electromechanical device fabrication. From the beginnings of research on carbon nanotubes, one of the major applications envisioned was hydrogen storage for fuel-cell powered cars and trucks. Subsequent theoretical models gave mixed results, the most pessimistic indicating that the fundamental H2-SWNT interaction was similar to flat graphite (physisorption) with only modest binding energies implying cryogenic operation at best. New material families with encouraging measured properties have emerged, and materials modeling has gained enormously in predictive power, sophistication, and the ability to treat a realistically representative number of atoms. One of the new materials, highly porous carbide-derived carbons (CDC), is the subject of an add-on to this grant awarded to myself and Taner Yildirim (NIST). Results from the add-on led eventually to a new 3-year award DE-FG02-08ER46522 “From Fundamental Understanding to Predicting New Nanomaterials for High Capacity Hydrogen Storage”, $1000K, (05/31/2008 - 05/01/2011) with Taner Yildirim and myself as co-PI’s.

Fischer, John, E.

2009-07-24T23:59:59.000Z

233

Physics & Astronomy Degree options  

E-Print Network [OSTI]

148 Physics & Astronomy Degree options BSc (Single Honours Degrees) Astrophysics Physics MPhys (Single Honours Degrees) Astrophysics Physics Theoretical Physics BSc (Joint Honours Degrees) Physics) Theoretical Physics and Mathematics MSci (Joint Honours Degree) Physics and Chemistry Entrance Requirements

Brierley, Andrew

234

Effects of Carbonate Solvents and Lithium Salts on Morphology...  

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

Carbonate Solvents and Lithium Salts on Morphology and Coulombic Efficiency of Lithium Electrode. Effects of Carbonate Solvents and Lithium Salts on Morphology and Coulombic...

235

Direct Visualization of Initial SEI Morphology and Growth Kinetics...  

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

Initial SEI Morphology and Growth Kinetics During Lithium Deposition by in situ Electrochemical Direct Visualization of Initial SEI Morphology and Growth Kinetics During Lithium...

236

Metallophthalocyanine thin films : structure and physical properties  

E-Print Network [OSTI]

organic spintronics, optoelectronics and photonics have seenin spintronics, optoelectronics, and photonics. Organic

Colesniuc, Corneliu Nicolai

2011-01-01T23:59:59.000Z

237

Measuring Physical Properties of Polymer Electrolyte Membranes  

Broader source: Energy.gov [DOE]

Presented by Cortney Mittelsteadt of Giner Electrochemical Systems, LLC, at the DOE High Temperature Membrane Working Group held September 14, 2006.

238

Metallophthalocyanine thin films : structure and physical properties  

E-Print Network [OSTI]

palladium (Pd/MPc/Pd) electrodes, and using both CuPc andPd devices with different organic layer thickness. Positive bias was applied on the bottom electrode. (Pd devices with different organic layer thickness. Positive bias was ix applied on the bottom electrode. (

Colesniuc, Corneliu Nicolai

2011-01-01T23:59:59.000Z

239

Property Administration Coordinator | Princeton Plasma Physics Lab  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - SeptemberMicroneedles for4-16HamadaBaO/Al2O3 lean NOx

240

EMSL - physics  

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

physics en 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOxCeO2. http:www.emsl.pnl.govemslwebpublications15n2-formation-and-fast-oxygen-i...

Note: This page contains sample records for the topic "morphology physical properties" 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

Physical Scientist  

Broader source: Energy.gov [DOE]

A successful candidate in this position will serve as the Senior Headquarters (HQ) Physical Scientist for the Carbon Storage Program. The Carbon Storage Program focuses on the development of...

242

Theoretical Physics  

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

a hierarchy problem? Are there new physical principles at the TeV scale? Is the Higgs boson a fundamental particle or composite, like a pion? What is the final state of...

243

Physical Scientist  

Broader source: Energy.gov [DOE]

The Office of Science is the single largest supporter of basic research in the physical sciences in the United States, providing more than 40 percent of total funding for this vital area of...

244

Rheological and Thermal Properties of Icy Materials  

E-Print Network [OSTI]

Laboratory measurements of physical properties of planetary ices generate information for dynamical models of tectonically active icy bodies in the outer solar system. We review the methods for measuring both flow properties ...

Durham, William B.

245

FSU High Energy Physics  

SciTech Connect (OSTI)

The High Energy Physics group at Florida State University (FSU), which was established in 1958, is engaged in the study of the fundamental constituents of matter and the laws by which they interact. The group comprises theoretical and experimental physicists, who sometimes collaborate on projects of mutual interest. The report highlights the main recent achievements of the group. Significant, recent, achievements of the group’s theoretical physicists include progress in making precise predictions in the theory of the Higgs boson and its associated processes, and in the theoretical understanding of mathematical quantities called parton distribution functions that are related to the structure of composite particles such as the proton. These functions are needed to compare data from particle collisions, such as the proton-proton collisions at the CERN Large Hadron Collider (LHC), with theoretical predictions. The report also describes the progress in providing analogous functions for heavy nuclei, which find application in neutrino physics. The report highlights progress in understanding quantum field theory on a lattice of points in space and time (an area of study called lattice field theory), the progress in constructing several theories of potential new physics that can be tested at the LHC, and interesting new ideas in the theory of the inflationary expansion of the very early universe. The focus of the experimental physicists is the Compact Muon Solenoid (CMS) experiment at CERN. The report, however, also includes results from the D0 experiment at Fermilab to which the group made numerous contributions over a period of many years. The experimental group is particularly interested in looking for new physics at the LHC that may provide the necessary insight to extend the standard model (SM) of particle physics. Indeed, the search for new physics is the primary task of contemporary particle physics, one motivated by the need to explain certain facts, such as the non-zero neutrino masses or the overwhelming astrophysical evidence for an invisible form of matter, called dark matter, that has had a marked effect on the evolution of structure in the universe. The report highlights the main, recent, experimental achievements of the experimental group, which include the investigation of properties of the W and Z bosons; the search for new heavy stable charged particles and the search for a proposed property of nature called supersymmetry in proton-proton collisions that yield high energy photons. In addition, we report a few results from a more general search for supersymmetry at the LHC, initiated by the group. The report also highlights the group's significant contributions, both theoretical and experimental, to the 2012 discovery of the Higgs boson and the measurement of its properties.

Prosper, Harrison B. [Florida State University; Adams, Todd [Florida State University; Askew, Andrew [Florida State University; Berg, Bernd [Florida State University; Blessing, Susan K. [Florida State University; Okui, Takemichi [Florida State University; Owens, Joseph F. [Florida State University; Reina, Laura [Florida State University; Wahl, Horst D. [Florida State University

2014-12-01T23:59:59.000Z

246

Physics Based on Physical Monism  

E-Print Network [OSTI]

Based on a physical monism, which holds that the matter and space are classified by not a difference of their kind but a difference of magnitude of their density, I derive the most fundamental equation of motion, which is capable of providing a deeper physical understanding than the known physics. For example, this equation answers to the substantive reason of movement, and Newton's second law, which has been regarded as the definition of force, is derived in a substantive level from this equation. Further, the relativistic energy-mass formula is generalized to include the potential energy term, and the Lorentz force and Maxwell equations are newly derived.

Seong-Dong Kim

2005-09-08T23:59:59.000Z

247

E-Print Network 3.0 - abwr core physics Sample Search Results  

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

and Reactor Physics Royal... , in particular to determine some physical properties of the subcritical reactor experiment Yalina Booster... Booster core as a function of energy and...

248

Electronic Properties of Carbon Nanotubes  

E-Print Network [OSTI]

P. Avouris, in Carbon Nanotubes M. S. Dresselhaus, P.Physics of Carbon Nanotubes S. V. Rotkin, S. Subramoney,Properties of Carbon Nanotubes Philip G. Collins 1 and

Collins, Philip G

2008-01-01T23:59:59.000Z

249

Electronic Properties of Carbon Nanotubes  

E-Print Network [OSTI]

P. Avouris, in Carbon Nanotubes M. S. Dresselhaus, P.in Applied Physics of Carbon Nanotubes S. V. Rotkin, S.Electronic Properties of Carbon Nanotubes Philip G. Collins

Collins, Philip G

2008-01-01T23:59:59.000Z

250

Mercury and frame-dragging in light of the MESSENGER flybys: conflict with general relativity, poor knowledge of the physical properties of the Sun, data reduction artifact, or still insufficient observations?  

E-Print Network [OSTI]

The Lense-Thirring precession of the longitude of perihelion of Mercury, as predicted by general relativity by using the value of the Sun's angular momentum S = 190 x 10^39 kg m^2 s^-1 from helioseismology, is -2.0 milliarcseconds per century, computed in a celestial equatorial reference frame. It disagrees at 4-{\\sigma} level with the correction 0.4 +/- 0.6 milliarcseconds per century to the standard Newtonian/Einsteinian precession, provided that the latter is to be entirely attributed to frame-dragging. The supplementary precession was recently determined in a global fit with the INPOP10a ephemerides to a long planetary data record (1914-2010) including also 3 data points collected in 2008-2009 from the MESSENGER spacecraft. The INPOP10a models did not include the solar gravitomagnetic field at all, so that its signature might have partly been removed in the data reduction process. On the other hand, the Lense-Thirring precession may have been canceled to a certain extent by the competing precessions caused by small mismodeling in the quadrupole mass moment of the Sun and in the PPN parameter beta entering the Schwarzschild-like 1PN precession, both modeled in INPOP10a. On the contrary, the oblateness of Mercury itself has a negligible impact on its perihelion. The same holds for the mismodelled actions of both the largest individual asteroids and the ring of the minor asteroids. Future analysis of more observations from the currently ongoing MESSENGER mission will shed further light on such an issue which, if confirmed, might potentially challenge our present-day picture of the currently accepted laws of gravitation and/or of the physical properties of the Sun.

Lorenzo Iorio

2012-04-30T23:59:59.000Z

251

REVIEW OF PARTICLE PHYSICS  

E-Print Network [OSTI]

ONLINE PARTICLE PHYSICS INFORMATION 1.3. Particle Physics Information Platforms . . . . . . . . .14. Particle Physics Education and Outreach

Beringer, Juerg

2013-01-01T23:59:59.000Z

252

Review of Particle Physics  

E-Print Network [OSTI]

11. Particle Physics Education Sites . . . . . . . . .ONLINE PARTICLE PHYSICS INFORMATION 1.11. Particle Physics Education Sites . . . . . . . . . . 12.

Nakamura, Kenzo

2010-01-01T23:59:59.000Z

253

Physical Facilities and Services Policy Page 1 Physical Facilities and Services Policy  

E-Print Network [OSTI]

Physical Facilities and Services Policy Page 1 Physical Facilities and Services Policy Category facilities requirements and their use, and guide the delivery and use of Properties' services. 2. POLICY and compliance monitoring of the policy. 4. SCOPE OF POLICY This policy applies to all physical facilities

254

EFFECTS OF VEGETATION ON TURBULENCE, SEDIMENT TRANSPORT AND STREAM MORPHOLOGY  

SciTech Connect (OSTI)

Vegetation, from an individual stem to multiple stems in various configurations, profoundly alters turbulent flows. These alterations influence sediment transport and stream morphology, but depend on complex interactions and relationships between flow, plants and sediment properties. This is illustrated for three case studies that represent a variety of macrophyte patterns and scales in the environment: flows through simulated uniformly distributed plant stems, emergent and submerged; flows with alternating simulated stem patches; and flow around an isolated stem in a flood plain. The emergent case demonstrates that when density is sparse the mean velocity and turbulence intensities vary horizontally around the stems, which would promote a heterogeneous bedform morphology. However, it is still unclear how density, submergence ratio, and flow Reynolds number, in combination, influence interference effects, vortex shedding and dissipation, and velocity, pressure and lift fluctuations that affect sediment entrainment. The submerged case demonstrates significant reduction of the mean velocity, turbulence intensities, and turbulent shear near the bed compared to an unobstructed flow and supports numerous observations that vegetation promotes deposition or stabilizes bed sediments. The case of alternating emergent vegetation patches illustrates how vegetation adjusts the bed promoting scour in open water and deposition within the patches. The isolated stem case illustrates the variety of coherent structures generated, their complex interaction, and their role in specific sediment transport phenomena observed. Additional research is required, however, to quantify thresholds and relationships for flow-vegetation-sediment interactions so that aquatic macrophyte plantings can be used more effectively in water resource management.

Neary, Vincent S [ORNL

2012-01-01T23:59:59.000Z

255

Top quark physics at CDF  

SciTech Connect (OSTI)

We present the recent results of top-quark physics using up to 6 fb{sup -1} of p{bar p} collisions analyzed by the CDF collaboration. The large number of top quark events analyzed, of the order of several thousands, allows stringent checks of the standard model predictions. Also, the top quark is widely believed to be a window to new physics. We present the latest measurements of top quark intrinsic properties as well as direct searches for new physics in the top sector.

Potamianos, Karolos

2011-12-01T23:59:59.000Z

256

Planetary Physics  

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 RegionatSearch Welcome to theNews & Blog »Physics PhysicsWeek »

257

Plasma Physics  

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 RegionatSearch Welcome to theNews & Blog »Physics PhysicsWeekPlasma

258

Optical adhesive property study  

SciTech Connect (OSTI)

Tests were performed to characterize the mechanical and thermal properties of selected optical adhesives to identify the most likely candidate which could survive the operating environment of the Direct Optical Initiation (DOI) program. The DOI system consists of a high power laser and an optical module used to split the beam into a number of channels to initiate the system. The DOI requirements are for a high shock environment which current military optical systems do not operate. Five candidate adhesives were selected and evaluated using standardized test methods to determine the adhesives` physical properties. EC2216, manufactured by 3M, was selected as the baseline candidate adhesive based on the test results of the physical properties.

Sundvold, P.D.

1996-01-01T23:59:59.000Z

259

Operational health physics training  

SciTech Connect (OSTI)

The initial four sections treat basic information concerning atomic structure and other useful physical quantities, natural radioactivity, the properties of {alpha}, {beta}, {gamma}, x rays and neutrons, and the concepts and units of radiation dosimetry (including SI units). Section 5 deals with biological effects and the risks associated with radiation exposure. Background radiation and man-made sources are discussed next. The basic recommendations of the ICRP concerning dose limitations: justification, optimization (ALARA concepts and applications) and dose limits are covered in Section seven. Section eight is an expanded version of shielding, and the internal dosimetry discussion has been extensively revised to reflect the concepts contained in the MIRD methodology and ICRP 30. The remaining sections discuss the operational health physics approach to monitoring radiation. Individual sections include radiation detection principles, instrument operation and counting statistics, health physics instruments and personnel monitoring devices. The last five sections deal with the nature of, operation principles of, health physics aspects of, and monitoring approaches to air sampling, reactors, nuclear safety, gloveboxes and hot cells, accelerators and x ray sources. Decontamination, waste disposal and transportation of radionuclides are added topics. Several appendices containing constants, symbols, selected mathematical topics, and the Chart of the Nuclides, and an index have been included.

NONE

1992-06-01T23:59:59.000Z

260

Morphologies of poly(cyclohexadiene) diblock copolymers  

SciTech Connect (OSTI)

Concerted experimental and theoretical investigations have been carried out to understand the micro-phase separation in diblock copolymer melts containing poly (1,3-cyclohexadiene), PCHD, as one of the constituents. In particular, we have studied diblock copolymer melts containing polystyrene (PS), polybutadiene (PB), and polyisoprene (PI) as the second block. We have systematically varied the ratio of 1,2- /1,4-microstructures of poly (1,3-cyclohexadiene) to tune the conformational asymmetry between the two blocks and characterized the effects of these changes on the morphologies using transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). Our experimental investigations reveal that the melts of PCHD-b-PB, PCHD-b-PS and PCHD-b-PI containing nearly equal fractions of each component and high percentage of 1,4-microstructures in the PCHD block form cylindrical rather than lamellar morphologies as expected in symmetric diblock copolymers. In contrast, the morphologies of PCHD-b-PB, PCHD-b-PS and PCHD-b-PI containing PCHD block with higher 1,2-microstructure are found to be disordered at 110 C. The change in the morphological behavior is in good agreement with our numerical calculations using the random phase approximation and self-consistent field theory for conformationally asymmetric diblock copolymer melts. Also, the effects of composition fluctuations are studied by extending the Brazovskii-Leibler-Fredrickson-Helfand (J. Chem. Phys. 87, 697 (1987)) theory to conformationally asymmetric diblock copolymer melts. These results allow the understanding of the underlying self-assembly process that highlights the importance of the conformational asymmetry in tuning the morphologies in block copolymers.

Kumar, Rajeev [ORNL; Mays, Jimmy [ORNL; Sides, Scott [ORNL; Goswami, Monojoy [ORNL; Sumpter, Bobby G [ORNL; Hong, Kunlun [ORNL; Avgeropoulos, Apostolos [University of Athens, Athens, Greece; Russell, Thomas P [ORNL; Gido, Samuel [University of Massachusetts, Amherst; Tsoukatos, Thodoris [University of Athens, Athens, Greece; Beyer, Fredrick [U.S. Army Research Laboratory, Aberdeen Proving Ground, MD

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Top physics results at CDF  

SciTech Connect (OSTI)

The most recent results on top quark physics at CDF are reported. Measurements of cross-section and mass are presented, and the status of single top quark production searches are discussed. The results obtained from probing various top quark properties are also presented.

Vickey, Trevor; /Illinois U., Urbana

2005-05-01T23:59:59.000Z

262

3.14 Physical Metallurgy, Fall 2003  

E-Print Network [OSTI]

The central point of this course is to provide a physical basis that links the structure of metals with their properties. With this understanding in hand, the concepts of alloy design and microstructural engineering are ...

Schuh, Chris

263

Major detectors in elementary particle physics. Supplement revision May 1985  

SciTech Connect (OSTI)

This report is the second edition of a loose-leaf compendium of the properties and performance characteristics of the major detectors of elementary particle physics.

Gidal, G.; Armstrong, B.; Rittenberg, A.

1985-05-01T23:59:59.000Z

264

22.101 Applied Nuclear Physics, Fall 2004  

E-Print Network [OSTI]

Fundamentals of nuclear physics for engineering students. Basic properties of the nucleus and nuclear radiations. Elementary quantum mechanical calculations of bound-state energies and barrier transmission probability. ...

Yip, Sidney

265

Experiments in Physics Physics 1291  

E-Print Network [OSTI]

of the Laboratory The laboratory experiments described in this manual are an important part of your physics course-3 Velocity, Acceleration, and g 35 1-4 Projectile Motion and Conservation of Energy 45 1-5 Conservation. Whenever possible, the material will have been discussed in lecture before you come to the laboratory

Columbia University

266

Experiments in Physics Physics 1291  

E-Print Network [OSTI]

and Conservation of Energy 97 1-9 Standing Waves 105 1-10 Specific Heat and Mechanical Equivalent of Heat 115 #12;#12;Introduction 1-0 General Instructions 1 Purpose of the Laboratory The laboratory experiments described in this manual are an important part of your physics course. Most of the experiments are designed to illustrate

Columbia University

267

Experiments in Physics Physics 1291  

E-Print Network [OSTI]

The laboratory experiments described in this manual are an important part of your physics course. Most-8 Projectile Motion and Conservation of Energy 97 1-9 Standing Waves 105 1-10 Specific Heat and Mechanical Equivalent of Heat 115 #12;#12;Introduction 1-0 General Instructions 1 Purpose of the Laboratory

Columbia University

268

Historic Properties  

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

education, and technical preservation assistance for properties at LANL. Potential Los Alamos park properties include buildings in the town of Los Alamos associated with the...

269

DOE Fundamentals Handbook: Classical Physics  

SciTech Connect (OSTI)

The Classical Physics Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of physical forces and their properties. The handbook includes information on the units used to measure physical properties; vectors, and how they are used to show the net effect of various forces; Newton`s Laws of motion, and how to use these laws in force and motion applications; and the concepts of energy, work, and power, and how to measure and calculate the energy involved in various applications. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility systems and equipment.

Not Available

1992-06-01T23:59:59.000Z

270

DOE Fundamentals Handbook: Classical Physics  

SciTech Connect (OSTI)

The Classical Physics Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of physical forces and their properties. The handbook includes information on the units used to measure physical properties; vectors, and how they are used to show the net effect of various forces; Newton's Laws of motion, and how to use these laws in force and motion applications; and the concepts of energy, work, and power, and how to measure and calculate the energy involved in various applications. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility systems and equipment.

Not Available

1992-06-01T23:59:59.000Z

271

PHOTOVOLTAIC PROPERTIES OF AU-MEROCYANINE-TiO2 SANDWICH CELLS. II. PROPERTIES OF ILLUMINATED CELLS AND EFFECTS OF DOPING WITH ELECTRON ACCEPTORS  

E-Print Network [OSTI]

Journal of Chemical Physics PHOTOVOLTAIC PROPERTIES OF AU-under Contract W-7405-ENG-48 Photovoltaic Properties of Au-been studied using photovoltaic techniques. A theoretical

Skotheim, T.

2010-01-01T23:59:59.000Z

272

Physical Protection  

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

Establishes requirements for the physical protection of safeguards and security interests. Copies of Section B, Safeguards and Security Alarm Management System, which contains Unclassified Controlled Nuclear Information, and Appendix 1, Security Badge Specifications, which contains Official Use Only information, are only available, by request, from the program manager, Protection Program Operations, 301-903-6209. Cancels: DOE M 473.1-1 and DOE M 471.2-1B.

2005-08-26T23:59:59.000Z

273

Physical Protection  

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

This Manual establishes requirements for the physical protection of safeguards and security interests. Copies of Section B, Safeguards and Security Alarm Management System, which contains Unclassified Controlled Nuclear Information, and Appendix 1, Security Badge Specifications, which contains Official Use Only information, are only available, by request, from the program manager, Protection Program Operations, 301-903-6209. Chg 1, dated 3/7/06. Cancels: DOE M 473.1-1 and DOE M 471.2-1B

2005-08-26T23:59:59.000Z

274

The fundamental plane of clusters of galaxies: a quest for understanding cluster dynamics and morphology  

E-Print Network [OSTI]

We discuss implications of the fundamental plane parameters of clusters of galaxies derived from combined optical and X-ray data of a sample of 78 nearby clusters. In particular, we investigate the dependence of these parameters on the dynamical state of the cluster. We introduce a new concept of allocation of the fundamental plane of clusters derived from their intrinsic morphological properties, and put some theoretical implications of the existence of a fundamental plane into perspective.

Christoph Fritsch; Thomas Buchert

1999-03-10T23:59:59.000Z

275

STAR Highlights on Heavy Ion Physics  

E-Print Network [OSTI]

RHIC-STAR is a mid-rapidity collider experiment for studying high energy nuclear collisions. The main physics goals of STAR experiment are 1) studying the properties of the strongly coupled Quark Gluon Plasma, 2) explore the QCD phase diagram structure. In these proceedings, we will review the recent results of heavy ion physics at STAR.

Shusu Shi

2014-09-30T23:59:59.000Z

276

The Symmetry, Color, and Morphology of Galaxies  

E-Print Network [OSTI]

The structural symmetry of forty-three face-on galaxy images in the R(65 0 nm) and J(450 nm) bands are measured to determine the usefulness of symmetry a s a morphological parameter. Each galaxy image is rotated by $180$\\deg and subtr acted from the original to obtain a quantitative value for its structural symmet ry. The symmetry numbers computed for the sample are then compared with RC3 mor phological types, color \\& absolute blue magnitudes. A strong correlation betw een color and symmetry is found, and the RC3 Hubble sequence is found to be one of increasing asymmetry. The use of symmetry as a morphological parameter, and the possible causes of the asymmetries are discussed.

Christopher J. Conselice

1997-10-22T23:59:59.000Z

277

Physics and Astronomy Engineering/Physics Concentration  

E-Print Network [OSTI]

Physics and Astronomy Engineering/Physics Concentration Strongly recommended courses Credits Term Electromagnetic Fields & Waves 3 PHY 3230 Thermal Physics 3 PHY 4020 Computational Methods in Physics.) taken Grade PHY 4620 Optics 4 PHY 3211 Modern Physics II 3 PHY 4730 Analog Circuits 3 PHY 4640 Quantum

Thaxton, Christopher S.

278

Physics and Astronomy Radiation Safety Physics Concentration  

E-Print Network [OSTI]

Physics and Astronomy Radiation Safety Physics Concentration Strongly recommended courses Credits Environucleonics Lab 1 PHY 3211 Modern Physics II 3 PHY 3230 Thermal Physics 3 PHY 4330 Digital Electronics 3 PHY 4820 Medical Physics 3 CHE 1101 Intro. Chemistry I 3 CHE 1110 Intro. Chemistry I Lab 1 CHE 1102 Intro

Thaxton, Christopher S.

279

PHYSICS OF BURNING PHYSICS INACCESSIBLE TO  

E-Print Network [OSTI]

PHYSICS OF BURNING PLASMAS: PHYSICS INACCESSIBLE TO PRESENT FACILITIES FIRE Physics Workshop May 2000 F. Perkins and N. Sauthoff Princeton Plasma Physics Laboratory FIRE Workshop 1 May 2000 #12;OUTLINE · Introduction · Three Classes of Burning Plasma Physics inaccessable to contemporary tokamak

280

Department of Physics Department of Physics  

E-Print Network [OSTI]

Department of Physics Department of Physics Life Sciences Building 3101 S. Dearborn St. Chicago, IL 60616 312.567.3480 www.iit.edu/csl/physics Chair: Grant Bunder The Department of Physics offers B.S., M.S., and Ph.D. degrees in physics. Within the department, there are many opportunities for interdisciplinary

Heller, Barbara

Note: This page contains sample records for the topic "morphology physical properties" 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

314 Department of Physics Department of Physics  

E-Print Network [OSTI]

314 Department of Physics Department of Physics Physics, one of the basic sciences, has its origin led to the detailed understanding of a remarkable variety of physical phenomena. Our knowledge now comprehension of the physical world forms an impressive part of the intellectual and cultural heritage of our

Nagle, John F.

282

Physics (Phys) (Department of Physics and Engineering)  

E-Print Network [OSTI]

229Physics Physics (Phys) (Department of Physics and Engineering) McCormick Foundation PROFESSORSILU INSTRUCTOR CUMMING VISITING PROFESSOR BOLLER MAJORS A major in physics leading to a Bachelor of Science degree requires completion of 50 credits including the following: 1. Physics 111, 112, 113, 114, 210, 215

Dresden, Gregory

283

Department of Physics Department of Physics  

E-Print Network [OSTI]

Department of Physics Department of Physics Life Sciences Building 3101 S. Dearborn St. Chicago, IL 60616 312.567.3480 www.iit.edu/csl/physics Chair: Christopher White The Department of Physics offers B.S., M.S., and Ph.D. degrees in physics. Within the department, there are many opportunities

Heller, Barbara

284

Environmental and morphological differences within Icteridae: Icterus  

E-Print Network [OSTI]

World bird #0;? 27 species of Icterus #0;? Distribute from N. Alaska to S. Chile GIS Methods 1. Imported breeding areas from NatureServepg 2. Determined Species Richness 3 Imported data from WorldClim Global. from – Climate Data #0;? Temperature #0... Ei tl d Environmen al and morphological differences within IcteridaeIcteridae: : Icterus Jessica L Rodriguez – Haskell Indian Nations University, Haskell Indian BRIDGE Program AdéLi Ni KUiitOithlAndrés Lirara--Noriega – Kansas Un versity rnitho...

Rodriquez, Jessica

2010-11-18T23:59:59.000Z

285

Morphology, physiology and environmental effects of triploid watermelon seed germination  

E-Print Network [OSTI]

-part approach to the problem. First, the morphology of the seed coat was examined. In the morphology section, scanning electron microscopy (SEM) was used to determine the basic structural differences in the seed coat. Seed components characteristics were also...

Grange, Stacie Lee

2001-01-01T23:59:59.000Z

286

Assessing two-year-olds' knowledge of number agreement morphology  

E-Print Network [OSTI]

Previous research in the area of children's knowledge of number agreement morphology has yielded mixed results. Some researchers have found evidence for sensitivity to agreement morphology at as early as 16 months, while ...

Blossom, Megan Stratton

2013-12-31T23:59:59.000Z

287

Quantum simulations of physics problems  

SciTech Connect (OSTI)

If a large Quantum Computer (QC) existed today, what type of physical problems could we efficiently simulate on it that we could not efficiently simulate on a classical Turing machine? In this paper we argue that a QC could solve some relevant physical 'questions' more efficiently. The existence of one-to-one mappings between different algebras of observables or between different Hilbert spaces allow us to represent and imitate any physical system by any other one (e.g., a bosonic system by a spin-1/2 system). We explain how these mappings can be performed, and we show quantum networks useful for the efficient evaluation of some physical properties, such as correlation functions and energy spectra.

Somma, R. D. (Rolando D.); Ortiz, G. (Gerardo); Knill, E. H. (Emanuel H.); Gubernatis, J. E.

2003-01-01T23:59:59.000Z

288

Hadron physics  

SciTech Connect (OSTI)

Is all hadronic physics ultimately describable by QCD. Certainly, many disparate phenomena can be understood within the QCD framework. Also certainly, there are important questions which are open, both theoretically (little guidance, as yet) and experimentally, regarding confinement. Are there dibaryons, baryonium, glueballs. In addition, there are experimental results which at present do not have an explanation. This talk, after a short section on QCD successes and difficulties, will emphasize two experimental topics which have recent results - glueball spectroscopy and exclusive reactions at large momentum transfer. Both are experimentally accessible in the AGS/LAMPF II/AGS II/TRIUMF II/SIN II energy domain.

Bunce, G.

1984-05-30T23:59:59.000Z

289

Nuclear Physics  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratory | NationalJohnSecurityControls |Navy Nuclear NavyNuclear Physics

290

The segmentation problem in morphology learning Christopher D. Manning  

E-Print Network [OSTI]

learning Christopher D. Manning (1998) The segmentation problem in morphology learning. In D.M.W. Powers

291

Particle-size and morphology dependence of the preferred interface orientation in LiFePO4 nano-  

E-Print Network [OSTI]

Particle-size and morphology dependence of the preferred interface orientation in LiFePO4 nano insights into the equilibrium properties and potential two-phase lithiation mechanisms in LiFePO4 nano, if experimentally-relevant nano-particles were to (de)lithiate under a thermodynamic two-phase mechanism

Ceder, Gerbrand

292

Top quark physics  

SciTech Connect (OSTI)

The top quark, when it was finally discovered at Fermilab in 1995 completed the three-generation structure of the Standard Model (SM) and opened up the new field of top quark physics. Viewed as just another SM quark, the top quark appears to be a rather uninteresting species. Produced predominantly, in hadron-hadron collisions, through strong interactions, it decays rapidly without forming hadrons, and almost exclusively through the single mode t {r_arrow} Wb. The relevant CKM coupling V{sub tb} is already determined by the (three-generation) unitarity of the CKM matrix. Rare decays and CP violation are unmeasurable small in the SM. Yet the top quark is distinguished by its large mass, about 35 times larger than the mass of the next heavy quark, and intriguingly close to the scale of electroweak (EW) symmetry breaking. This unique property raises a number of interesting questions. Is the top quark mass generated by the Higgs mechanism as the SM predicts and is its mass related to the top-Higgs-Yukawa coupling? Or does it play an even more fundamental role in the EW symmetry breaking mechanism? If there are new particles lighter than the top quark, does the top quark decay into them? Could non-SM physics first manifest itself in non-standard couplings of the top quark which show up as anomalies in top quark production and decays? Top quark physics tries to answer these questions. Several properties of the top quark have already been examined at the Tevatron. These include studies of the kinematical properties of top production, the measurements of the top mass, of the top production cross-section, the reconstruction of t{bar t}pairs in the fully hadronic final states, the study of {tau} decays of the top quark, the reconstruction of hadronic decays of the W boson from top decays, the search for flavor changing neutral current decays, the measurement of the W helicity in top decays, and bounds on t{bar t} spin correlations. Most of these measurements are limited by the small sample of top quarks collected at the Tevatron up to now. The LHC is, in comparison, a top factory, producing about 8 million t{bar t}pairs per experiment per year at low luminosity (10 fb{sup {minus}1}/year), and another few million (anti-)tops in EW single (anti-)top quark production. They therefore expect that top quark properties can be examined with significant precision at the LHC. Entirely new measurements can be contemplated on the basis of the large available statistics.

Ahmadov, A.; Azuelos, G.; Bauer, U.; Belyaev, A.; Berger, E. L.; Sullivan, Z.; Tait, T. M. P.

2000-03-24T23:59:59.000Z

293

January 2010 Physics 3300  

E-Print Network [OSTI]

1 January 2010 Physics 3300 Introduction to Physical Oceanography Instructor: Brad de Young Physics and Physical Oceanography Memorial University, bdeyoung@mun.ca Room C-3000 737-8738 Physics 3300 Introduction to Physical Oceanography deals with the physics of the processes in the ocean, providing an integrating view

deYoung, Brad

294

Review of Particle Physics, 1998-1999  

E-Print Network [OSTI]

A comprehensive review of the field of Particle Physics produced by the Particle Data Group (PDG). Includes a compilation/evaluation of data on particle properties, summary tables with best values and limits for particle properties, extensive summari particles, and a long section of reviews, tables, and plots on a wide variety of theoretical and experimental topics of interest to particle and astrophysicists.

Particle Data Group. Berkeley; Aguilar-Benítez, M; Amsler, Claude; Armstrong, Betty; Babu, K S; Barnett, Richard Michael; Besson, Dave; Biebel, Otmar; Burchat, Patricia R; Cahn, Robert N; Carone, Christopher D; Casas-Serradilla, José Luís; Caso, Carlo; Conforto, Gianni; Crawford, Ronald L; Dahl, Orin; Dalitz, Richard Henry; Damour, Thibault Marie Alban Guillaume; Desler, Kai; Donahue, Richard J; Doser, Michael; Edwards, Donald A; Eidelman, Simon; Erler, Jens; Ezhela, Vladimir V; Fassò, A; Feng, Jonathan L; Fetscher, Wulf; Filimonov, Boris B; Froidevaux, Daniel; Gaisser, Thomas K; Garren, Lynn; Gee, Paul S; Geer, Steve; Gerber, Hans Jürg; Gilman, Frederick J; Goodman, Maury; Grab, C; Groom, Donald E; Gurtu, Atul; Haber, Howard E; Hagiwara, Kaoru; Hagmann, Christian; Hayes, Kenneth G; Hernández, Juan José; Hikasa, Ken Ichi; Hinchliffe, Ian; Hogan, Craig J; Honscheid, Klaus; Höhler, Gerhard; Jackson, John David; James, Frederick E; Johnson, Kurtis F; Karlen, Dean A; Kayser, Boris; Kleinknecht, Konrad; Knowles, Ian G; Kolda, Christopher; Kreitz, Pat; Landua, Rolf; Langacker, Paul; Littenberg, Laurence S; Lugovsky, S B; Mangano, Michelangelo L; Mankov, Serguei; Manley, D Mark; Manohar, Aneesh Vasant; March-Russell, John David; Murayama, Hitoshi; Mönig, Klaus; Nakada, Tatsuya; Nakamura, Kenzo; Nicholson, Flic; Olive, Keith A; Piepke, Andreas; Quinn, Helen R; Raffelt, Georg G; Renk, Burkhard; Ronan, Michael T; Roos, Matts; Rosenberg, Leslie J; Schindler, Rafe H; Schmitt, Michael; Schramm, David N; Scott, Douglas; Shrock, Robert E; Sjöstrand, Torbjörn; Smoot, George F; Spanier, Stefan; Srednicki, Mark A; Stanev, Todor; Suzuki, Mahiko; Tanabashi, Masaharu; Tkachenko, N P; Trippe, Thomas G; Törnqvist, N A; Valencia, German; Van Bibber, Karl; Vogel, Petr; Voss, Rüdiger; Wohl, Charles G; Wolfenstein, Lincoln; Workman, Ronald L; Yao Wei Ming; Youssef, Saul

1998-01-01T23:59:59.000Z

295

Galaxy Zoo: the dependence of morphology and colour on environment  

E-Print Network [OSTI]

We analyse the relationships between galaxy morphology, colour, environment and stellar mass using data for over 100,000 objects from Galaxy Zoo, the largest sample of visually classified morphologies yet compiled. We conclusively show that colour and morphology fractions are very different functions of environment. Both are sensitive to stellar mass; however, at fixed stellar mass, while colour is also highly sensitive to environment, morphology displays much weaker environmental trends. Only a small part of both relations can be attributed to variation in the stellar mass function with environment. Galaxies with high stellar masses are mostly red, in all environments and irrespective of their morphology. Low stellar-mass galaxies are mostly blue in low-density environments, but mostly red in high-density environments, again irrespective of their morphology. The colour-density relation is primarily driven by variations in colour fractions at fixed morphology, in particular the fraction of spiral galaxies that have red colours, and especially at low stellar masses. We demonstrate that our red spirals primarily include galaxies with true spiral morphology. We clearly show there is an environmental dependence for colour beyond that for morphology. Before using the Galaxy Zoo morphologies to produce the above results, we first quantify a luminosity-, size- and redshift-dependent classification bias that affects this dataset, and probably most other studies of galaxy population morphology. A correction for this bias is derived and applied to produce a sample of galaxies with reliable morphological type likelihoods, on which we base our analysis.

Steven P. Bamford; Robert C. Nichol; Ivan K. Baldry; Kate Land; Chris J. Lintott; Kevin Schawinski; Anze Slosar; Alexander S. Szalay; Daniel Thomas; Mehri Torki; Dan Andreescu; Edward M. Edmondson; Christopher J. Miller; Phil Murray; M. Jordan Raddick; Jan Vandenberg

2008-11-14T23:59:59.000Z

296

THE INFLECTED NOUN SYSTEM IN SERBO-CROATIAN: MORPHOLOGICAL STRUCTURE*  

E-Print Network [OSTI]

THE INFLECTED NOUN SYSTEM IN SERBO-CROATIAN: MORPHOLOGICAL STRUCTURE* Laurie B. Feldmant and Carol examines the role of morphology in the reading lexicon of speakers of Serbo-Croatian, the dominant language of Yugoslavia. The morphology of Serbo-Croatian is particularly interesting to study because it is SUbstantially

297

Neutrino Physics  

E-Print Network [OSTI]

The fundamental properties of neutrinos are reviewed in these lectures. The first part is focused on the basic characteristics of neutrinos in the Standard Model and how neutrinos are detected. Neutrino masses and oscillations are introduced and a summary of the most important experimental results on neutrino oscillations to date is provided. Then, present and future experimental proposals are discussed, including new precision reactor and accelerator experiments. Finally, different approaches for measuring the neutrino mass and the nature (Majorana or Dirac) of neutrinos are reviewed. The detection of neutrinos from supernovae explosions and the information that this measurement can provide are also summarized at the end.

Gil-Botella, I

2013-01-01T23:59:59.000Z

298

Particle Physics Booklet 2008  

E-Print Network [OSTI]

212 25. Accelerator physics of colliders ? 26. High-energythe full Review. PARTICLE PHYSICS BOOKLET TABLE OF CONTENTSrev. ) Summary Tables of Particle Physics Gauge and Higgs

et al., C. Amsler

2008-01-01T23:59:59.000Z

299

Center for Beam Physics  

E-Print Network [OSTI]

for Heavy Ion Fusion," Research Trends in Physics, La JollaInternational School of Physics, New York, New York (1992),Professor and Chairman Physics Department University of

Chattopadhyay, S.

2010-01-01T23:59:59.000Z

300

Secular Evolution and the Morphological Transformation of Cluster and Field Galaxies  

E-Print Network [OSTI]

Abstract. Deep surveys conducted during the past decades have shown that galaxies in the distant universe are generally of more irregular shapes, and are disky in appearance and in their star formation rate, compared to galaxies in similar environments in the nearby universe. Given that the merger rate between z=2 and the local universe is far from adequate to account for this observed morphological transformation rate, an internal mechanism for the morphological transformation of galaxies is to be sought, whose operation can be further aided by environmental factors. The secular evolution mechanism, especially with the discovery of a collisionless dissipation mechanism for stars within the secular evolution paradigm, has provided just such a framework for understanding the morphological evolution of galaxies across the Hubble time. In this paper we will summarize the past theoretical results on the dynamical mechanisms for secular evolution, and highlight new results in the analysis of the observational data, which confirmed that density waves in physical galaxies possess the kind of characteristics which could produce theobserved rates of morphological transformation for both cluster and field galaxies.

F. Combes; J. Palous; Xiaolei Zhang; Ronald J. Buta

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Nuclear Physics of Neutron Stars  

E-Print Network [OSTI]

Understanding the equation of state (EOS) of cold nuclear matter, namely, the relation between the pressure and energy density, is a central goal of nuclear physics that cuts across a variety of disciplines. Indeed, the limits of nuclear existence, the collision of heavy ions, the structure of neutron stars, and the dynamics of core-collapse supernova, all depend critically on the equation of state of hadronic matter. In this contribution I will concentrate on the special role that nuclear physics plays in constraining the EOS of cold baryonic matter and its impact on the properties of neutron stars.

J. Piekarewicz

2009-01-28T23:59:59.000Z

302

Fabrication of nanostructure by physical vapor deposition with glancing angle deposition technique and its applications  

SciTech Connect (OSTI)

A nanostructural thin film is one of the highly exploiting research areas particularly in applications in sensor, photocatalytic, and solar-cell technologies. In the past two decades, the integration of glancing-angle deposition (GLAD) technique to physical vapor deposition (PVD) process has gained significant attention for well-controlled multidimensional nanomorphologies because of fast, simple, cost-effective, and mass-production capability. The performance and functional properties of the coated thin films generally depend upon their nanostructural compositions, i.e., large aspect ratio, controllable porosity, and shape. Such structural platforms make the fabricated thin films very practical for several realistic applications. We therefore present morphological and nanostructural properties of various deposited materials, which included metals, i.e., silver (Ag), and oxide compounds, i.e., tungsten oxide (WO{sub 3}), titanium dioxide (TiO{sub 2}), and indium tin oxide (ITO). Different PVD techniques based on DC magnetron sputtering and electron-beam evaporation, both with the integrated GLAD component, were discussed. We further explore engineered nanostructures which enable controls of optical, electrical, and mechanical properties. These improvements led to several practical applications in surface-enhanced Raman, smart windows, gas sensors, self-cleaning materials and transparent conductive oxides (TCO)

Horprathum, M., E-mail: mati.horprathum@nectec.or.th; Eiamchai, P., E-mail: mati.horprathum@nectec.or.th; Patthanasettakul, V.; Limwichean, S.; Nuntawong, N.; Chindaudom, P. [Optical Thin-Film Laboratory National Electronics and Computer Technology Center, Pathumthani, 12120 (Thailand); Kaewkhao, J. [Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000 (Thailand); Chananonnawathorn, C. [Department of Physics, Faculty of Science and Technology, Thammasat University, Pathumthani, 12121 (Thailand)

2014-09-25T23:59:59.000Z

303

Physics Illinois Undergraduate Programs  

E-Print Network [OSTI]

Physics Illinois Undergraduate Programs Department of Physics College of Engineering University to undergraduate education. Over the last 15 years, in collaboration with our nationally recognized Physics Education Research Group, our faculty has reinvented the way undergraduate physics courses are taught

Gilbert, Matthew

304

Physics 6321 Coastal oceanography  

E-Print Network [OSTI]

Physics 6321 Coastal oceanography · Instructor: Dr. Iakov Afanassiev · Office: Physics C-4065 · email: yakov@physics.mun.ca · Course Times: TBD Room TBD · Office Hours: unlimited · Web Page: http://www.physics

deYoung, Brad

305

Structure and properties of diamond and diamond-like films  

SciTech Connect (OSTI)

This section is broken into four parts: (1) introduction, (2) natural IIa diamond, (3) importance of structure and composition, and (4) control of structure and properties. Conclusions of this discussion are that properties of chemical vapor deposited diamond films can compare favorably with natural diamond, that properties are anisotropic and are a strong function of structure and crystal perfection, that crystal perfection and morphology are functions of growth conditions and can be controlled, and that the manipulation of texture and thereby surface morphology and internal crystal perfection is an important step in optimizing chemically deposited diamond films for applications.

Clausing, R.E. [Oak Ridge National Lab., TN (United States)

1993-01-01T23:59:59.000Z

306

High Energy Physics  

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

Basic Energy Science Biological and Environmental Research Fusion Energy Sciences High Energy Physics Nuclear Physics Advanced Scientific Computing Research Pioneering...

307

People's Physics Book The People's Physics Book  

E-Print Network [OSTI]

#12;People's Physics Book The People's Physics Book Authors James H. Dann, Ph.D. James J. Dann. All rights reserved. Textbook Website http://scipp.ucsc.edu/outreach/index2.html #12;People's Physics) "Each discovery, each advance, each increase in the sum of human riches, owes its being to the physical

California at Santa Cruz, University of

308

Physics Procedia 00 (2013) 16 Physics Procedia  

E-Print Network [OSTI]

Physics Procedia 00 (2013) 1­6 Physics Procedia Educating the next generation of Computational Physicists Joan Adler Physics Department, Technion -IIT, Haifa, Israel, 32000 Abstract Many "senior" Computational Physics researchers began their careers perched on of the other vertices of the Landau triangle

Adler, Joan

309

People's Physics Book The People's Physics Book  

E-Print Network [OSTI]

People's Physics Book The People's Physics Book Authors James H. Dann, Ph.D. James J. Dann. All rights reserved. Textbook Website http://scipp.ucsc.edu/outreach/index2.html #12;People's Physics) "Each discovery, each advance, each increase in the sum of human riches, owes its being to the physical

California at Santa Cruz, University of

310

Physics and Astronomy Chemical Physics Concentration  

E-Print Network [OSTI]

Physics and Astronomy Chemical Physics Concentration Strongly recommended courses Credits Term Dept Fields & Waves 3 PHY 3230 Thermal Physics 3 PHY 4640 Quantum Mechanics 3 PHY 4020 Computational Methods in Physics & Engineering 3 PHY 4330 Digital Electronics 3 CHE 1101 Intro. Chemistry I 3 CHE 1110 Intro

Thaxton, Christopher S.

311

Physics Procedia 00 (2013) 15 Physics Procedia  

E-Print Network [OSTI]

Physics Procedia 00 (2013) 1­5 Physics Procedia Educating the next generation of Computational Physicists Joan Adler Physics Department, Technion -IIT, Haifa, Israel, 32000 Abstract Many "senior" Computational Physics researchers began their careers perched on of the other vertices of the Landau triangle

Adler, Joan

312

Fundamentals of Plasma Physics  

E-Print Network [OSTI]

of students (from physics, engineering physics, elec- trical engineering, nuclear engineering and other un;PREFACE Plasma physics is a relatively new branch of physics that became a mature science over the last). Thus, plasma physics has developed in large part as a branch of applied or engineering physics

Callen, James D.

313

Evolving Physically Simulated Flying Creatures for Efficient Cruising  

E-Print Network [OSTI]

forms has not been developed as far as aquatic or terrestrial locomotion in the field of artificial life and the lift and drag coefficients of each flier are calculated from its morphological characteristics and used and the behavior of physics-based articulated figures by artificial evolution. His blockies creatures moved

Turk, Greg

314

Dynamic Morphologies of Microscale Droplet Interface Bilayers  

SciTech Connect (OSTI)

Droplet interface bilayers (DIBs) are a powerful platform for studying the dynamics of synthetic cellular membranes; however, very little has been done to exploit the unique dynamical features of DIBs. Here, we generate microscale droplet interface bilayers ( DIBs) by bringing together femtoliter-volume water droplets in a microfluidic oil channel, and characterize morphological changes of the DIBs as the droplets shrink due to evaporation. By varying the initial conditions of the system, we identify three distinct classes of dynamic morphology. (1) Buckling and Fission: When forming DIBs using the lipid-out method (lipids in oil phase), lipids in the shrinking monolayers continually pair together and slide into the bilayer to conserve their mass. As the bilayer continues to grow, it becomes confined, buckles, and eventually fissions one or more vesicles. (2) Uniform Shrinking: When using the lipid-in method (lipids in water phase) to form DIBs, lipids uniformly transfer from the monolayers and bilayer into vesicles contained inside the water droplets. (3) Stretching and Unzipping: Finally, when the droplets are pinned to the wall(s) of the microfluidic channel, the droplets become stretched during evaporation, culminating in the unzipping of the bilayer and droplet separation. These findings offer a better understanding of the dynamics of coupled lipid interfaces.

Mruetusatorn, Prachya [ORNL] [ORNL; Boreyko, Jonathan B [ORNL] [ORNL; Sarles, Stephen A [ORNL] [ORNL; Venkatesan, Guru [The University of Tennessee] [The University of Tennessee; Hayes, Douglas G [ORNL] [ORNL; Collier, Pat [ORNL] [ORNL

2014-01-01T23:59:59.000Z

315

The theory of Multiverse, multiplicity of physical objects and physical constants  

E-Print Network [OSTI]

The Multiverse is collection of parallel universes. In this article a formal theory and a topos-theoretic models of the multiverse are given. For this the Lawvere-Kock Synthetic Differential Geometry and topos models for smooth infinitesimal analysis are used. Physical properties of multi-variant and many-dimensional parallel universes are discussed. The source of multiplicity of physical objects is set of physical constants.

Gouts, A K

2003-01-01T23:59:59.000Z

316

Atomic level characterization of the morphology of phases in Chromindur magnetic alloys  

SciTech Connect (OSTI)

The atom probe field ion microscope has been used to characterize the morphology and determine the compositions of the iron-rich {alpha} and chromium-enriched {alpha}{prime} phases produced during isothermal and step cooled heat treatments in a Chromindur 2 ductile permanent magnet alloy. The good magnetic properties of this material are due to a combination of the composition of the two phases and the isolated nature and size of the ferromagnetic {alpha} phase. The morphology of the {alpha} phase is produced as a result of the shape of the miscibility gap and the step-cooled heat treatment and is distinctly different from that formed during isothermal heat treatments. 6 refs., 3 figs., 4 tabs.

Miller, M.K. (Oak Ridge National Lab., TN (USA)); Camus, P.P (Wisconsin Univ., Madison, WI (USA). Applied Superconductivity Center); Hetherington, M.G. (Oxford Univ. (UK). Dept. of Materials)

1991-01-01T23:59:59.000Z

317

On the fractal morphology of combustion-generated soot aggregates  

SciTech Connect (OSTI)

The fractal properties of soot aggregates were investigated using ex-situ and in-situ experimental methods as well as computer simulations. Ex-situ experiments involved thermophoretic sampling and analysis by transmission electron microscopy (TEM), while in-situ measurements employed angular static light scattering and data inversion based on Rayleigh-Debye-Gans (RDG) approximation. Computer simulations used a sequential algorithm which mimics mass fractal-like structures. So from a variety of hydrocarbon-fueled laminar and turbulent nonpremixed flame environments were considered in the present study. The TEM analysis of projected soot images sampled from fuel-rich conditions of buoyant and weakly-buoyant laminar flames indicated that the fractal dimension of soot was relatively independent of position in flames, fuel type and flame condition. These measurements yielded an average fractal dimension of 1.8, although other structure parameters such as the primary particle diameters and number of primary particles in aggregates had wide range of values. Fractal prefactor (lacunarity) was also measured for soot sampled from the fuel-lean conditions of turbulent flames, considering the actual morphology by tilting the samples during TEM analysis. These measurements yielded a fractal dimension of 1.65 and a lacunarity of 8.5, with experimental uncertainties (95% confidence) of 0.08 and 0.5, respectively. Relationships between the actual and projected structure properties of soot were also developed by combining TEM observations with numerical simulations. Practical approximate formulae were suggested to find radius of gyration of an aggregate from its maximum dimension, and number of primary particles in an aggregate from projected area. Finally, the fractal dimension and lacunarity of soot were obtained using light scattering for the same conditions of the above TEM measurements.

Koylu, U.O. [Yale Univ., New Haven, CT (United States)

1995-12-31T23:59:59.000Z

318

Morphological studies on block copolymer modified PA 6 blends  

SciTech Connect (OSTI)

Recent studies show that compounding polyamide 6 (PA 6) with a PA 6 polyether block copolymers made by reaction injection molding (RIM) or continuous anionic polymerization in a reactive extrusion process (REX) result in blends with high impact strength and high stiffness compared to conventional rubber blends. In this paper, different high impact PA 6 blends were prepared using a twin screw extruder. The different impact modifiers were an ethylene propylene copolymer, a PA PA 6 polyether block copolymer made by reaction injection molding and one made by reactive extrusion. To ensure good particle matrix bonding, the ethylene propylene copolymer was grafted with maleic anhydride (EPR-g-MA). Due to the molecular structure of the two block copolymers, a coupling agent was not necessary. The block copolymers are semi-crystalline and partially cross-linked in contrast to commonly used amorphous rubbers which are usually uncured. The combination of different analysis methods like atomic force microscopy (AFM), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) gave a detailed view in the structure of the blends. Due to the partial cross-linking, the particles of the block copolymers in the blends are not spherical like the ones of ethylene propylene copolymer. The differences in molecular structure, miscibility and grafting of the impact modifiers result in different mechanical properties and different blend morphologies.

Poindl, M., E-mail: marcus.poindl@ikt.uni-stuttgart.de, E-mail: christian.bonten@ikt.uni-stuttgart.de; Bonten, C., E-mail: marcus.poindl@ikt.uni-stuttgart.de, E-mail: christian.bonten@ikt.uni-stuttgart.de [Institut für Kunststofftechnik, University of Stuttgart (Germany)

2014-05-15T23:59:59.000Z

319

Developing a Soil Property Database for the Oklahoma Mesonet.  

E-Print Network [OSTI]

??The objective of this study was to create a comprehensive database of soil hydraulic and physical properties of the Oklahoma Mesonet station soils. Replicate soil… (more)

Scott, Bethany

2012-01-01T23:59:59.000Z

320

Code enforcement, tax delinquency, and strategic management of problematic properties  

E-Print Network [OSTI]

This thesis considers two interrelated sources of blight in cities: so-called "problem properties" (PP), or properties in poor physical condition where owners have stopped performing basic maintenance, and tax-delinquent ...

Brown, Sara E

2014-01-01T23:59:59.000Z

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


321

Uranus at equinox: Cloud morphology and dynamics  

E-Print Network [OSTI]

As the 7 December 2007 equinox of Uranus approached, ring and atmosphere observers produced a substantial collection of observations using the 10-m Keck telescope and the Hubble Space Telescope. Those spanning the period from 7 June 2007 through 9 September 2007 we used to identify and track cloud features, determine atmospheric motions, characterize cloud morphology and dynamics, and define changes in atmospheric band structure. We confirmed the existence of the suspected northern hemisphere prograde jet, locating its peak near 58 N, and extended wind speed measurements to 73 N. For 28 cloud features we obtained extremely high wind-speed accuracy through extended tracking times. The new results confirm a small N-S asymmetry in the zonal wind profile, and the lack of any change in the southern hemisphere between 1986 (near solstice) and 2007 (near equinox) suggests that the asymmetry may be permanent rather than seasonally reversing. In the 2007 images we found two prominent groups of discrete cloud features ...

Sromovsky, Lawrence; Hammel, Heidi; Ahue, William; de Pater, Imke; Rages, Kathy; Showalter, Mark; van Dam, Marcos

2015-01-01T23:59:59.000Z

322

PHOTOVOLTAIC PROPERTIES OF AU-MEROCYANINE-TiO2 SANDWICH CELLS. I. DARK ELECTRICAL PROPERTIES AND TRANSIENT EFFECT  

E-Print Network [OSTI]

Journal of Chemical Physics PHOTOVOLTAIC PROPERTIES OF AU-W-7405-ENG-48 j'\\:::) Photovoltaic Properties of Au-dye used in making the photovoltaic cells. Figure 2. Diagram

Skotheim, T.

2010-01-01T23:59:59.000Z

323

Nanoscale Morphological and Chemical Changes of High Voltage...  

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

Nanoscale Morphological and Chemical Changes of High Voltage Lithium-Manganese Rich NMC Composite Cathodes with Cycling Friday, August 29, 2014 Renewable energy is critical for the...

324

New Morphological Paradigm Uncovered in Organic Solar Cells  

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

New Morphological Paradigm Uncovered in Organic Solar Cells Print Organic solar cells are made of light, flexible, renewable materials; they require simple and inexpensive...

325

Research on the Morphology of Precipitation and Runoff in Texas  

E-Print Network [OSTI]

TR-15 1969 Research on the Morphology of Precipitation and Runoff in Texas R.A. Clark Texas Water Resources Institute Texas A&M University ...

Clark, R.A.

326

Morphology and Electronic Structure of the Oxide Shell on the...  

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

Electronic Structure of the Oxide Shell on the Surface of Iron Nanoparticles. Morphology and Electronic Structure of the Oxide Shell on the Surface of Iron Nanoparticles. Abstract:...

327

Morphology and Oxide Shell Structure of Iron Nanoparticles Grown...  

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

Oxide Shell Structure of Iron Nanoparticles Grown by Sputter-Gas-Aggregation. Morphology and Oxide Shell Structure of Iron Nanoparticles Grown by Sputter-Gas-Aggregation. Abstract:...

328

B Physics (Experiment)  

E-Print Network [OSTI]

In past few years the flavor physics made important transition from the work on confirmation the standard model of particle physics to the phase of search for effects of a new physics beyond standard model. In this paper we review current state of the physics of b-hadrons with emphasis on results with a sensitivity to new physics.

Michal Kreps

2010-08-02T23:59:59.000Z

329

General Syllabus Physics 45100  

E-Print Network [OSTI]

General Syllabus Physics 45100 Thermodynamics and Statistical Physics Designation: Undergraduate Catalog description: 45100: Thermodynamics and Statistical Physics Temperature; equation of state; work and statistical mechanics; low-temperature physics; the Third Law. 3 HR./Wk.; 3 CR. Prerequisites: Physics 35100

Lombardi, John R.

330

Physics Resources for Teachers  

E-Print Network [OSTI]

Physics Resources for Teachers University of Wisconsin ­ Madison Department of Physics 1150 University Ave. Madison, WI 53706 wonders@physics.wisc.edu (608) 262-2927 Plasma Physics Web Resources Center Plasma Physics Lab http://science-education.pppl.gov/ Coalition for Plasma Science http

Collar, Juan I.

331

Department of Physics High Energy Physics Group  

E-Print Network [OSTI]

Department of Physics High Energy Physics Group Electrical Engineer (Job ref: 0004) The High Energy and experience. A job description and an application form can be obtained from http

332

Fabrication and properties of microporous silicon  

E-Print Network [OSTI]

Microporous silicon layers were fabricated by electrochemical etching of single crystalline silicon wafers in HF-ethanol solutions. The pore properties of porous silicon were examined by physical adsorption of nitrogen and the relationship between...

Shao, Jianzhong

1994-01-01T23:59:59.000Z

333

Impact of solvents and supercritical CO{sub 2} drying on the morphology and structure of polymer-based biofilms  

SciTech Connect (OSTI)

In the present work, two-dimensional systems based on biodegradable polymers such as poly(?-caprolactone) (PCL), poly(ethylene oxide) (PEO) and polylactic acid (PLA) are fabricated by means of a sustainable approach which consists in inducing phase separation in solutions of such polymers and “green” solvents, namely ethyl lactate (EL) and ethyl acetate (EA). The extraction of the solvent is promoted by a controlled drying process, which is performed in either air or supercritical CO{sub 2}. The latter can indeed act as both an antisolvent, which favors the deposition of the polymer by forming a mixture with EL and EA, and a plasticizing agent, whose solvation and transport properties may considerably affect the microstructure and crystallinity of the polymer films. The morphological, topographical and crystalline properties of the films are tailored through a judicial selection of the materials and the processing conditions and assessed by means of thermal analyses, polarized optical microscopy, scanning electron microscopy and confocal interferometric microscopy. The results show that the morphological and crystalline properties of the films are strongly dependent on the choice of both the polymer/solvent system and the operating conditions during the drying step. In particular, the morphological, topographical and thermal properties of films prepared starting from highly crystalline polymers, namely PCL and PEO, are greatly affected by the crystallization of the material. Conversely, the less crystalline PLA forms almost completely amorphous films.

Causa, Andrea; Acierno, Domenico; Filippone, Giovanni [Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università di Napoli Federico II, Piazzale V. Tecchio, 80, 80125 Napoli (Italy); Salerno, Aurelio; Domingo, Concepción [Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra (Spain)

2014-05-15T23:59:59.000Z

334

Physics 4: Introductory Physics Electromagnetism and Light  

E-Print Network [OSTI]

Physics 4: Introductory Physics Electromagnetism and Light Professor Jeffrey D. Richman Department: Electromagnetism and Light Welcome to Physics 4! What is your goal in life? If it is to become an engineer or to pursue a career in science, this is a key class for you. Understanding electromagnetism and light

Fygenson, Deborah Kuchnir

335

VOLUME 79, NUMBER 11 P H Y S I C A L R E V I E W L E T T E R S 15 SEPTEMBER 1997 Morphology and Stability of Growing Multiwall Carbon Nanotubes  

E-Print Network [OSTI]

State University, East Lansing, Michigan 48824-1116 2 Department of Physics and Semiconductor Physics atoms bridging the gap and change the tip morphology significantly. Presence of a strong "lip to bridge the gap between adjacent wall edges by covalent bonds, rather than to saturate dangling bonds

336

Personal Property  

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

This Guide provides non-regulatory guidance and information to assist DOE organizations and contractors in implementing the DOE-wide and site-specific personal property management programs. It supplements the policy, requirements, and responsibilities information contained in the DOE Order cited above and clarifies the regulatory requirements contained in the Federal Property Management Regulation (FMR) and specific contracts.

2014-10-16T23:59:59.000Z

337

ENVIRONMENTAL PHYSICS METHODS  

E-Print Network [OSTI]

ENVIRONMENTAL PHYSICS METHODS LABORATORY PRACTICES #12;Foundations of Environmental Science Lecture Enviromental Physics Methods Laboratory Practices #12;Eötvös Loránd University Faculty of Science ENVIRONMENTAL tankönyvsorozat" (KMR Foundations of Environmental Science Lecture Series). KEYWORDS: Environmental physics

Horváth, Ákos

338

CORRELATIONS AMONG GALAXY PROPERTIES FROM THE SLOAN DIGITAL SKY SURVEY  

SciTech Connect (OSTI)

Galaxies are complex systems with many properties. Correlations among galaxy properties can supply important clues for studying the formation and evolution of galaxies. Using principal component analysis and least-squares fitting, this paper investigates the correlations among galactic parameters involving more properties (color, morphology, stellar population, and absolute magnitude) than previous studies. We use a volume-limited sample (whole sample) of 75,423 galaxies that was selected from the Sloan Digital Sky Survey Data Release 2 and divided into two subsamples (blue and red samples) using a critical color of (g - r) = 0.70 mag. In addition to recovering some previous results, we also obtain some new results. First, all separators for dividing galaxies into two groups can be related via good parameter-first principal component (PC1) correlations. A critical PC1 that indicates whether or not stellar age (or the evolution of a stellar population over time) is important can be used to separate galaxies. This suggests that a statistical parameter, PC1, is helpful in understanding the physical separators of galaxies. In addition, stellar age is shown to be unimportant for red galaxies, while both stellar age and mass are dominating parameters of blue galaxies. This suggests that the various numbers of dominating parameters of galaxies may result from the use of different samples. Finally, some parameters are shown to be correlated, and quantitative fits for a few correlations are obtained, e.g., log(t) = 8.57 + 1.65 (g - r) for the age (log t) and color (g - r) of blue galaxies and log (M{sub *}) = 4.31 - 0.30 M{sub r} for the stellar mass (log M{sub *}) and absolute magnitude (M{sub r}) of red galaxies. The median relationships between various parameter pairs are also presented for comparison.

Li Zhongmu; Mao Caiyan, E-mail: zhongmu.li@gmail.com [Institute for Astronomy and History of Science and Technology, Dali University, Dali 671003 (China)

2013-07-01T23:59:59.000Z

339

ORISE: Health physics services  

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

Health physics services Nuclear power plant The Oak Ridge Institute for Science and Education (ORISE) offers comprehensive health physics services in a number of technical areas...

340

B Physics: Theory Overview  

E-Print Network [OSTI]

This is an overview of B physics that can be done at the LHC with the purpose of searching for new physics.

David London

2012-07-19T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

ORISE: Health Physics Training  

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

Health Physics Training Student performs an analysis during an ORAU health physics training course Training and educating a highly skilled workforce that can meet operational...

342

Office of Physical Protection  

Broader source: Energy.gov [DOE]

The Office of Physical Protection is comprised of a team of security specialists engaged in providing Headquarters-wide physical protection.

343

Non-Equilibrium Magnetohydrodynamic Behavior of Plasmas having Complex, Evolving Morphology  

SciTech Connect (OSTI)

Our main activity has been doing lab experiments where plasmas having morphology and behavior similar to solar and astrophysical plasmas are produced and studied. The solar experiment is mounted on one end of a large vacuum chamber while the astrophysical jet experiment is mounted on the other end. Diagnostics are shared between the two experiments. The solar experiment produces arched plasma loops that behave very much like solar corona loops. The astrophysical jet experiment produces plasma jets that are very much like astrophysical jets. We have also done work on plasma waves, including general wave dispersions, and specific properties of kinetic Alfven waves and of whistler waves.

Bellan, Paul M. [Caltech] [Caltech

2014-03-13T23:59:59.000Z

344

Conference highlights of "Toward a New Millennium in Galaxy Morphology"  

E-Print Network [OSTI]

A summary of the highlights of the conference, "Toward a New Millennium in Galaxy Morphology" is presented. In this review, I cover the major topics addressed at the conference, including both the observational and theoretical frameworks suggested for understanding the morphology of galaxies.

Christopher J. Conselice

1999-10-19T23:59:59.000Z

345

Morphology of PolyethyleneCarbon Black Composites G. BEAUCAGE,1  

E-Print Network [OSTI]

Morphology of Polyethylene­Carbon Black Composites G. BEAUCAGE,1 S. RANE,1 D. W. SCHAEFER,1 G. LONG-ray scattering (SAXS) study of a conductive grade of carbon black and carbon black­polymer composites(methyl methacrylate); carbon black; filler; composite; conductivity; percolation INTRODUCTION The morphology

Beaucage, Gregory

346

Morphology and thermal conductivity of yttria-stabilized zirconia coatings  

E-Print Network [OSTI]

yttria-stabilized zir- conia (YSZ) is then applied to provide thermal insulation [1]. This ceramic layer]. The thermal conductivity of the ceramic layer has been found to depend on the pore morphology within a coatingMorphology and thermal conductivity of yttria-stabilized zirconia coatings Hengbei Zhao a

Wadley, Haydn

347

Wood in rivers: interactions with channel morphology and processes  

E-Print Network [OSTI]

Editorial Wood in rivers: interactions with channel morphology and processes No doubt about it, wood complicates fluvial geo- morphology. It messes up nice tidy streams, compli- cates quantitative through the study of channels lacking a substantial load of wood debris (Leopold et al., 1964

Montgomery, David R.

348

About the Limiting Behaviour of Iterated Robust Morphological Operators  

E-Print Network [OSTI]

Guanajuato, Gto., Mexico horebeek@cimat.mx 2 Freie Universitat Berlin, Institut fur Informatik Tacostr. 9 of morphological operators. To this purpose, we describe the implied iterative process by a discrete dynamical morphology is an important branch of non-linear signal process- ing. It has its roots in discrete geometry

Van Horebeek, Johan

349

September 25, 2003 Morphology and the Web of  

E-Print Network [OSTI]

September 25, 2003 Morphology and the Web of Grammar: Essays in Memory of Steven G. Lapointe C: Preface by U.C. Davis Linguistics Faculty. vii Morphology and the Web of Grammar. C. Orhan Orgun and Peter and the Web of Grammar. C. Orhan Orgun and Peter Sells (eds.). Copyright c 2003, CSLI Publications. #12

Makous, Walter

350

Conditional Random Fields for Morphological Analysis of Wireless ECG Signals  

E-Print Network [OSTI]

Conditional Random Fields for Morphological Analysis of Wireless ECG Signals Annamalai Natarajan recording of ECG signals. This capability has diverse applications in the study of human health and behavior present a novel approach to the problem of extracting the morphological structure of ECG signals based

Massachusetts at Amherst, University of

351

Temporal, Spatial, and Morphologic Features of Hair Cell Regeneration in  

E-Print Network [OSTI]

Temporal, Spatial, and Morphologic Features of Hair Cell Regeneration in the Avian Basilar Papilla 98195-7923 ABSTRACT Hair cell­selective antibodies were used in combination with the nucleotide bromode- oxyuridine (BrdU) to examine the temporal, spatial, and morphologic progression of auditory hair cell

Rubel, Edwin

352

Kinetics and morphology of erbium silicide formation  

SciTech Connect (OSTI)

The growth kinetics and surface morphology of erbium silicide formation from Er layers on Si(100) substrates are examined using both fast e-beam annealing and furnace annealing. Very smooth erbium silicide layers have been grown using a line-source e beam to heat and react the Er overlayers with the substrate. This contrasts to the severe pitting observed when Er layers are reacted with Si in conventional furnace annealing. The pitting phenomenon can be explained by a thin contaminant layer at the interface between Er and Si. Our results suggest the contamination barrier is not due to oxygen, as usually assumed, but may be related to the presence of carbon. Rapid e-beam heating to reaction temperatures of approx.1200 K permits dispersion of the barrier layer before substantial silicide growth can occur, allowing smooth silicide growth. Heating to shorter times to just disperse the interface barrier allows uniform layer growth by subsequent furnace annealing and has permitted measurement of the kinetics of erbium silicide formation on crystalline Si. The reaction obeys (time)/sup 1//sup ///sup 2/ kinetics but is shown to be not totally diffusion limited by the ability to sustain multiple interface growth from a single Si source. The growth rates are nearly an order of magnitude slower for the Er/Si(100) interface than for the Er/amorphous-Si, but with a similar activation energy near 1.75 eV in both cases.

Knapp, J.A.; Picraux, S.T.; Wu, C.S.; Lau, S.S.

1985-11-15T23:59:59.000Z

353

Key Physical Mechanisms in Nanostructured Solar Cells  

SciTech Connect (OSTI)

The objective of the project was to study both theoretically and experimentally the excitation, recombination and transport properties required for nanostructured solar cells to deliver energy conversion efficiencies well in excess of conventional limits. These objectives were met by concentrating on three key areas, namely, investigation of physical mechanisms present in nanostructured solar cells, characterization of loss mechanisms in nanostructured solar cells and determining the properties required of nanostructured solar cells in order to achieve high efficiency and the design implications.

Dr Stephan Bremner

2010-07-21T23:59:59.000Z

354

CONSTRAINING EXPLOSION TYPE OF YOUNG SUPERNOVA REMNANTS USING 24 {mu}m EMISSION MORPHOLOGY  

SciTech Connect (OSTI)

Determination of the explosion type of supernova remnants (SNRs) can be challenging, as SNRs are hundreds to thousands of years old and supernovae are classified based on spectral properties days after explosion. Previous studies of thermal X-ray emission from Milky Way and Large Magellanic Cloud SNRs have shown that Type Ia and core-collapse (CC) SNRs have statistically different symmetries, and thus these sources can be typed based on their X-ray morphologies. In this Letter, we extend the same technique, a multipole expansion technique using power ratios, to infrared (IR) images of SNRs to test whether they can be typed using the symmetry of their warm dust emission as well. We analyzed archival Spitzer Space Telescope Multiband Imaging Photometer 24 {mu}m observations of the previously used X-ray sample, and we find that the two classes of SNRs separate according to their IR morphologies. The Type Ia SNRs are statistically more circular and mirror symmetric than the CC SNRs, likely due to the different circumstellar environments and explosion geometries of the progenitors. Broadly, our work indicates that the IR emission retains information of the explosive origins of the SNR and offers a new method to type SNRs based on IR morphology.

Peters, Charee L.; Stassun, Keivan G. [Department of Physics, Fisk University, 1000 17th Ave N Nashville, TN 37208 (United States); Lopez, Laura A.; Figueroa-Feliciano, Enectali [MIT-Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, 37-664H, Cambridge, MA 02139 (United States); Ramirez-Ruiz, Enrico, E-mail: charee.l.peters@vanderbilt.edu [Department of Astronomy and Astrophysics, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95060 (United States)

2013-07-10T23:59:59.000Z

355

Current experiments in elementary particle physics  

SciTech Connect (OSTI)

This report contains summaries of 720 recent and current experiments in elementary particle physics (experiments that finished taking data before 1980 are excluded). Included are experiments at Brookhaven, CERN, CESR, DESY, Fermilab, Moscow Institute of Theoretical and Experimental Physics, Tokyo Institute of Nuclear Studies, KEK, LAMPF, Leningrad Nuclear Physics Institute, Saclay, Serpukhov, SIN, SLAC, and TRIUMF, and also experiments on proton decay. Instructions are given for searching online the computer database (maintained under the SLAC/SPIRES system) that contains the summaries. Properties of the fixed-target beams at most of the laboratories are summarized.

Wohl, C.G.; Armstrong, F.E., Oyanagi, Y.; Dodder, D.C.; Ryabov, Yu.G.; Frosch, R.; Olin, A.; Lehar, F.; Moskalev, A.N.; Barkov, B.P.

1987-03-01T23:59:59.000Z

356

Review of Particle Physics, 2004-2005  

E-Print Network [OSTI]

The Review of Particle Physics and the abbreviated version, the Particle Physics Booklet, are reviews of the field of Particle Physics. This complete Review includes a compilation/evaluation of data on particle properties, called the "Particle Listings". These Listings include 1726 new measurements from 512 papers, in addition to the 20200 measurements from 5903 papers that first appeared in previous editions. The Review and the Booklet are published in even numbered years. This edition is an updating through December 2003 (and, in some areas, well into 2004).

Eidelman, Simon; Olive, Keith A; Aguilar-Benítez, M; Amsler, Claude; Asner, David M; Babu, K S; Barnett, Richard Michael; Beringer, J; Burchat, Patricia R; Carone, Christopher D; Caso, Carlo; Conforto, Gianni; Dahl, Orin; D'Ambrosio, G; Doser, Michael; Feng, Jonathan L; Gherghetta, Tony; Gibbons, Lawrence; Goodman, Maury; Grab, C; Groom, Donald E; Gurtu, Atul; Hagiwara, Kaoru; Hernández-Rey, Juan Jose; Hikasa, Ken Ichi; Honscheid, Klaus; Jawahery, Hassan; Kolda, Christopher; Kwon Young Joon; Mangano, Michelangelo L; Manohar, Aneesh Vasant; March-Russell, John David; Masoni, Alberto; Miquel, Ramon; Mönig, Klaus; Murayama, Hitoshi; Nakamura, Kenzo; Navas, Sergio; Pape, Luc; Patrignani, Claudia; Piepke, Andreas; Raffelt, Georg G; Roos, Matts; Tanabashi, Masaharu; Terning, John; Törnqvist, N A; Trippe, Thomas G; Vogel, Petr; Wohl, Charles G; Workman, Ronald L; Yao Wei Ming; Zyla, Piotr; Armstrong, Betty; Gee, Paul S; Harper, Gail; Lugovsky, Kirill Slava; Lugovsky, S B; Lugovsky, V S; Rom, A; Artuso, Marina; Barberio, Elisabetta; Battaglia, Marco; Bichsel, H; Biebel, Otmar; Bloch, Philippe; Cahn, Robert N; Casper, D; Cattai, Ariella; Chivukula, R Sekhar; Cowan, Glen; Damour, Thibault Marie Alban Guillaume; Desler, Kai; Dobbs, M A; Drees, Manuel; Edwards, A; Edwards, Donald A; Elvira, V D; Erler, Jens; Ezhela, Vladimir V; Fetscher, Wulf; Fields, B D; Foster, Brian; Froidevaux, Daniel; Fukugita, Masataka; Gaisser, Thomas K; Garren, Lynn; Gerber, Hans Jürg; Gerbier, G; Gilman, Frederick J; Haber, Howard E; Hagmann, Christian; Hewett, Joanne L; Hinchliffe, Ian; Hogan, Craig J; Höhler, Gerhard; Igo-Kemenes, Peter Miklos; Jackson, John David; Johnson, Kurtis F; Karlen, Dean A; Kayser, Boris; Kirkby, D; Klein, Spencer R; Kleinknecht, Konrad; Knowles, Ian G; Kreitz, Pat; Kuyanov, Yu V; Lahav, O; Langacker, Paul; Liddle, Andrew R; Littenberg, Laurence S; Manley, D Mark; Narain, M; Nason, Paolo; Nir, Yosef; Peacock, John A; Quinn, Helen R; Raby, Stuart A; Ratcliff, B N; Razuvaev, E A; Renk, Burkhard; Rolandi, Luigi; Ronan, Michael T; Rosenberg, Leslie J; Sachrajda, Christopher T C; Sakai, Y; Sanda, A I; Sarkar, S; Schmitt, Michael; Schneider, Olivier; Scott, Douglas; Seligman, William G; Shaevitz, Michael H; Sjöstrand, Torbjörn; Smoot, George F; Spanier, Stefan; Spieler, Helmuth; Spooner, N J C; Srednicki, Mark A; Stahl, Achim; Stanev, Todor; Suzuki, Mahiko; Tkachenko, N P; Trilling, George H; Valencia, German; Van Bibber, Karl; Vincter, Manuella G; Ward, D R; Webber, Bryan R; Whalley, Michael; Wolfenstein, Lincoln; Womersley, John William; Woody, Craig L; Zenin, O V; Zhu Ren Yuan

2004-01-01T23:59:59.000Z

357

Experimental Particle Physics  

SciTech Connect (OSTI)

The high energy physics group at the University of South Carolina, under the leadership of Profs. S.R. Mishra, R. Petti, M.V. Purohit, J.R. Wilson (co-PI's), and C. Rosenfeld (PI), engaged in studies in "Experimental Particle Physics." The group collaborated with similar groups at other universities and at national laboratories to conduct experimental studies of elementary particle properties. We utilized the particle accelerators at the Fermi National Accelerator Laboratory (Fermilab) in Illinois, the Stanford Linear Accelerator Center (SLAC) in California, and the European Center for Nuclear Research (CERN) in Switzerland. Mishra, Rosenfeld, and Petti worked predominantly on neutrino experiments. Experiments conducted in the last fifteen years that used cosmic rays and the core of the sun as a source of neutrinos showed conclusively that, contrary to the former conventional wisdom, the "flavor" of a neutrino is not immutable. A neutrino of flavor "e," "mu," or "tau," as determined from its provenance, may swap its identity with one of the other flavors -- in our jargon, they "oscillate." The oscillation phenomenon is extraordinarily difficult to study because neutrino interactions with our instruments are exceedingly rare -- they travel through the earth mostly unimpeded -- and because they must travel great distances before a substantial proportion have made the identity swap. Three of the experiments that we worked on, MINOS, NOvA, and LBNE utilize a beam of neutrinos from an accelerator at Fermilab to determine the parameters governing the oscillation. Two other experiments that we worked on, NOMAD and MIPP, provide measurements supportive of the oscillation experiments. Good measurements of the neutrino oscillation parameters may constitute a "low energy window" on related phenomena that are otherwise unobservable because they would occur only at energies way above the reach of conceivable accelerators. Purohit and Wilson participated in the BaBar experiment, which collected data at SLAC until 2008. They continued to analyze the voluminous BaBar data with an emphasis on precision tests of Quantum Chromodynamics and on properties of the "eta_B," a bottom quark paired in a meson with a strange quark. The ATLAS experiment became the principal research focus for Purohit. One of the world's largest pieces of scientific equipment, ATLAS observes particle collisions at the highest-energy particle accelerator ever built, the Large Hadron Collider (LHC) at CERN. Our efforts on ATLAS included participation in the commissioning, calibration, and installation of components called "CSCs". The unprecedented energy of 14 TeV enabled the ATLAS and CMS collaborations to declare discovery of the famous Higgs particle in 2012.

Rosenfeld, Carl [Univ of South Carolina] (ORCID:0000000338571223); Mishra, Sanjib R. [Univ of South Carolina; Petti, Roberto [Univ of South Carolina; Purohit, Milind V. [Univ of South Carolina

2014-08-31T23:59:59.000Z

358

EFFECT OF COMPRESSION ON CONDUCTIVITY AND MORPHOLOGY OF PFSA MEMBRANES  

SciTech Connect (OSTI)

Polymer-Electrolyte-Fuel-Cells (PEFCs) are promising candidates for powering vehicles and portable devices using renewable-energy sources. The core of a PEFC is the solid electrolyte membrane that conducts protons from anode to cathode, where water is generated. The conductivity of the membrane, however, depends on the water content of the membrane, which is strongly related to the cell operating conditions. The membrane and other cell components are typically compressed to minimize various contact resistances. Moreover, the swelling of a somewhat constrained membrane in the cell due to the humidity changes generates additional compressive stresses in the membrane. These external stresses are balanced by the internal swelling pressure of the membrane and change the swelling equilibrium. It was shown using a fuel-cell setup that compression could reduce the water content of the membrane or alter the cell resistance. Nevertheless, the effect of compression on the membrane’s transport properties is yet to be understood, as well as its implications in the structure-functions relationships of the membrane. We previously studied, both experimentally and theoretically, how compression affects the water content of the membrane.6 However, more information is required the gain a fundamental understanding of the compression effects. In this talk, we present the results of our investigation on the in-situ conductivity of the membrane as a function of humidity and cell compression pressure. Moreover, to better understand the morphology of compressed membrane, small-angle X-ray-scattering (SAXS) experiments were performed. The conductivity data is then analyzed by investigating the size of the water domains of the compressed membrane determined from the SAXS measurements.

Kusoglu, Ahmet; Weber, Adam; Jiang, Ruichin; Gittleman, Craig

2011-07-20T23:59:59.000Z

359

Current issue Physics Resources  

E-Print Network [OSTI]

History Physics Education Industrial Outreach Programs that Match Every Interest - Master's Degrees, it became clear that physics master's programs were not easily categorized. The original classification the strengths of physics master's degree programs. Over half of physics departments offer at least one master

Thaxton, Christopher S.

360

PHYSICS 106 Summer 2011  

E-Print Network [OSTI]

PHYSICS 106 Summer 2011 Instructor: Stephanie Magleby (sam25@physics.byu.edu) Office Hours: MWF 2 -3 pm, N311 ESC Office Phone (physics): 422-7056 Office Phone (engineering): 422-8319 TA: Corbin Jacobs [corbinjacobs@gmail.com] Email Corbin with any reading quiz questions or Mastering Physics issues

Hart, Gus

Note: This page contains sample records for the topic "morphology physical properties" 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

Aspects of Unparticle Physics  

E-Print Network [OSTI]

We review some theoretical and experimental issues in unparticle physics, focusing mainly on collider signatures.

Arvind Rajaraman

2008-09-29T23:59:59.000Z

362

Top physics results from CDF  

SciTech Connect (OSTI)

The top quark is by far the most massive fundamental particle observed so far, and the study of its properties is interesting for several reasons ranging from its possible special role in electroweak symmetry breaking to its sensitivity to physics beyond the Standard Model. They present recent top physics results from CDF based on 160-320 pb{sup -1} of p{bar p} collision data at {radical}s = 1.96 TeV. The t{bar t} cross section and the top mass have been measured in different decay channels and using different methods. they have searched for evidence of single top production, setting upper limits on its production rate. Other results shown in this conference include studies of the polarization of W bosons from top decays, a search for charged Higgs decaying from top, and a search for additional heavy t' quarks.

Gomez, Gervasio; /Cantabria Inst. of Phys.

2005-05-01T23:59:59.000Z

363

Transformation of Morphology and Luminosity Classes of the SDSS Galaxies  

E-Print Network [OSTI]

We present a unified picture on the evolution of galaxy luminosity and morphology. Galaxy morphology is found to depend critically on the local environment set up by the nearest neighbor galaxy in addition to luminosity and the large scale density. When a galaxy is located farther than the virial radius from its closest neighbor, the probability for the galaxy to have an early morphological type is an increasing function only of luminosity and the local density due to the nearest neighbor ($\\rho_n$). The tide produced by the nearest neighbor is thought to be responsible for the morphology transformation toward the early type at these separations. When the separation is less than the virial radius, i.e. when $\\rho_n > \\rho_{\\rm virial}$, its morphology depends also on the neighbor's morphology and the large-scale background density over a few Mpc scales ($\\rho_{20}$) in addition to luminosity and $\\rho_n$. The early type probability keeps increasing as $\\rho_n$ increases if its neighbor is an early type. But the probability decreases as $\\rho_n$ increases when the neighbor is a late type. The cold gas streaming from the late type neighbor can be the reason for the morphology transformation toward late type. The overall early-type fraction increases as $\\rho_{20}$ increases when $\\rho_n > \\rho_{\\rm virial}$. This can be attributed to the hot halo gas of the neighbor which is confined by the pressure of the ambient medium held by the background mass. We have also found that galaxy luminosity depends on $\\rho_n$, and that the isolated bright galaxies are more likely to be recent merger products. We propose a scenario that a series of morphology and luminosity transformation occur through distant interactions and mergers, which results in the morphology--luminosity--local density relation.

Changbom Park; J. Richard Gott III; Yun-Young Choi

2007-10-23T23:59:59.000Z

364

Influence of processing conditions on the morphology of expanded perlite/polypropylene composites  

SciTech Connect (OSTI)

Perlite is an oversaturated, volcanic, glassy rock, which has chemically bound water from 2 to 5 wt%. Upon heating, perlite can be expanded up to 20 times of its original volume. Important applications are in the field of building industry, in refrigeration engineering or the pharmaceutical industry. As mineral filler in polymers, expanded perlite can increase the thermal conductivity, the viscosity and the mechanical properties of polypropylene composites. But there are still many challenges that must be analyzed to reach the full potential of those composites. This research work focuses on the morphology of expanded perlite/polypropylene (PP) compounds and the interactions between filler and polymer. To achieve good performance a homogenous dispersion of the filler in the polymer matrix is needed because the enhancement of the material correlates strongly with the morphology of the composite. Therefore it is necessary to characterize the microstructure of these materials in order to establish adequate structure-process-property relationships. The expanded perlite/PP composites were compounded with a co-rotating twin screw extruder Theysohn TSK 30/40D. For producing the closed cell expanded perlite a new technology, the bublon process, was used. For the material characterization two particles sizes were chosen and the filler content was varied at 5, 10 and 15 wt%. For the analysis of the effects of the screw geometry, two setups have been chosen for the processing of the materials. The produced materials were analyzed by scanning electron microscope (SEM) and tensile testing. The results show a reinforcement effect of the filler and differences in the inner structure of expanded perlite and in the morphology.

Mattausch, H., E-mail: hannelore.mattausch@unileoben.ac.at, E-mail: stephan.laske@unileoben.ac.at; Laske, S., E-mail: hannelore.mattausch@unileoben.ac.at, E-mail: stephan.laske@unileoben.ac.at; Holzer, C., E-mail: clemens.holzer@unileoben.ac.at [Chair of Polymer Processing, Department of Polymer Engineering and Science, Montanuniversitaet Leoben (Austria); Cirar, K., E-mail: kristin.cirar@unileoben.ac.at, E-mail: helmut.flachberger@unileoben.ac.at; Flachberger, H., E-mail: kristin.cirar@unileoben.ac.at, E-mail: helmut.flachberger@unileoben.ac.at [Chair of Mineral Processing, Department Mineral Resources and Petroleum Engineering , Montanuniversitaet Leoben (Austria)

2014-05-15T23:59:59.000Z

365

Physics with the ALICE experiment  

E-Print Network [OSTI]

ALICE experiment at LHC collects data in pp collisions at $\\sqrt{s}$=0.9, 2.76 and 7 TeV and in PbPb collisions at 2.76 TeV. Highlights of the detector performance and an overview of experimental results measured with ALICE in pp and AA collisions are presented in this paper. Physics with proton-proton collisions is focused on hadron spectroscopy at low and moderate $p_T$. Measurements with lead-lead collisions are shown in comparison with those in pp collisions, and the properties of hot quark matter are discussed.

Yuri Kharlov; for the ALICE collaboration

2012-03-09T23:59:59.000Z

366

Physics with the ALICE experiment  

SciTech Connect (OSTI)

ALICE experiment at LHC collects data in pp collisions at 1497-1 = 0.9, 2.76, and 7 TeV and in PbPb collisions at 2.76 TeV. Highlights of the detector performance and an overview of experimental results measured with ALICE in pp and AA collisions are presented in this paper. Physics with protonproton collisions is focused on hadron spectroscopy at low and moderate p{sub t}. Measurements with lead-lead collisions are shown in comparison with those in pp collisions, and the properties of hot quark matter are discussed.

Kharlov, Yu. V. [Institute for High Energy Physics (Russian Federation)

2013-12-15T23:59:59.000Z

367

Neutrino Physics with Thermal Detectors  

SciTech Connect (OSTI)

The investigation of fundamental neutrino properties like its mass and its nature calls for the design of a new generation of experiments. High sensitivity, high energy resolution, and versatility together with the possibility of a simple multiplexing scheme are the key features of future detectors for these experiments. Thermal detectors can combine all these features. This paper reviews the status and the perspectives for what concerns the application of this type of detectors to neutrino physics, focusing on direct neutrino mass measurements and neutrinoless double beta decay searches.

Nucciotti, A. [Dipartimento di Fisica, Universita di Milano Bicocca and INFN Sezione di Milano-Bicocca Piazza della Scienza, 3, 20126 Milano (Italy)

2009-11-09T23:59:59.000Z

368

Studying many-body physics through quantum coding theory  

E-Print Network [OSTI]

The emerging closeness between correlated spin systems and error-correcting codes enables us to use coding theoretical techniques to study physical properties of many-body spin systems. This thesis illustrates the use of ...

Yoshida, Beni

2012-01-01T23:59:59.000Z

369

DOCTORAL PROGRAMME MATHEMATICS AND PHYSICS, Subprogramme PHYSICS,  

E-Print Network [OSTI]

Slovenia is producing a significant share of its electricity in nuclear power plant. The doctoral programme of nuclear engineering stems from the requirements of the Nuclear power plant Krsko, Slovenian Nuclear SafetyDOCTORAL PROGRAMME MATHEMATICS AND PHYSICS, Subprogramme PHYSICS, Module NUCLEAR ENGINEERING

?umer, Slobodan

370

3.40J / 22.71J Physical Metallurgy, Spring 2003  

E-Print Network [OSTI]

Discusses structure-property relationships in metallic alloys selected to illustrate some basic concepts of physical metallurgy and alloy design. Fundamentals of annealing, spinodal decomposition, nucleation, growth, and ...

Russell, Kenneth

371

E-Print Network 3.0 - alumina physically loaded Sample Search...  

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

constant in RF devices. Some unique features of thin-film silica and alumina aerogels have been... studied including physical properties, etching characteristics, and...

372

E-Print Network 3.0 - aerosol main physical Sample Search Results  

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

AND INTEGRAL AEROSOL PROPERTIES RETRIEVAL FROM RAMAN LIDAR DATA USING PRINCIPLE COMPONENT ANALYSIS Summary: retrievals of physical aerosol parameters from ground-based and...

373

Numerical tools for musical instruments acoustics: analysing nonlinear physical models using continuation  

E-Print Network [OSTI]

self-sustained oscillations. Several physical models (clarinet and saxophone) are formulated the dynamical properties of self-sustained musical instruments using tra- ditional numerical techniques

Boyer, Edmond

374

Morphological control of silicalite-1 crystals using microemulsion mediated growth  

E-Print Network [OSTI]

mediated synthesis, it is concluded that the surfactant??silicate interactions are primarily responsible for the modulation of crystal morphology observed. The results indicate that surfactant adsorption on the growing crystal surface, not the confined...

Lee, Seung Ju

2005-11-01T23:59:59.000Z

375

Quaternary morphology and paleoenvironmental records of carbonate islands  

E-Print Network [OSTI]

Here I use a simple numerical model of reef profile evolution to show that the present-day morphology of carbonate islands has developed largely in response to late Pleistocene sea level oscillations in addition to variable ...

Toomey, Michael (Michael Ryan)

2014-01-01T23:59:59.000Z

376

Population genetics, phylogeography, and morphology of Notropis stramineus  

E-Print Network [OSTI]

distinct pattern of geographical variation which has compelled authors to recognize two subspecies within this species. In this study, I investigated both the genetic and morphological diversity of N. stramineus. First, I used microsatellite markers...

Pittman, Kendra J.

2011-12-31T23:59:59.000Z

377

Root Morphology of Drought Resistance in Cotton (Gossypium hirsutum L.)  

E-Print Network [OSTI]

A combination of root morphology and plant physiology with drought/or salt tolerance should affect drought resistance in cotton (Gossypium hirsutum L.). This experiment was developed to evaluate early vegetative and seedling growth of cotton from...

Dewi, Elvira Sari

2011-02-22T23:59:59.000Z

378

Monitoring transient repolarization segment morphology deviations in mouse ECG  

E-Print Network [OSTI]

This thesis details the design, implementation and validation of a system that facilitates partial automation for detection of anomalous repolarization segment morphologies in the ECG of mice. The technology consists of ...

Oefinger, Matthew Blake, 1976-

2006-01-01T23:59:59.000Z

379

Morphological differences in bromeliad leaf surfaces: influence on copper uptake  

E-Print Network [OSTI]

MORPHOLOGICAL DIFFERENCES IN BROMELIAD LEAF SURFACES: INFLUENCE ON COPPER UPTAKE A Thesis by BARBARA DEE FISHER Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE August 1978 Major Subject: Horticulture MORPHOLOGICAL DIFFERENCES IN BROMELIAD LEAF SURFACES: INFLUENCE ON COPPER UPTAKE A Thesis by BARBARA DEE FISHER Approved as to style and content by: hairman of Committee Member Head of Department M...

Fisher, Barbara Dee

1978-01-01T23:59:59.000Z

380

Quality attributes of four morphological types of tomatoes  

E-Print Network [OSTI]

ABSTRACT QUALITY ATTRIBUTL'S OF FOUR MORPHOLOGICAL TYPES OF TOMATOES December 1971 RONNIE J. SHAW B. S. , Texas A&M University Directed by: Dr. E, E. Burns Field ripened tomato fruit of four morphological types (blocky- pear, pear, plum, cherry...) were evaluated for raw fruit characteristics and for product characteristics of tomato juice and canned whole tomatoes produced from these fruit types. Correlations between attributes of raw tomato fruit and product quality were noted. Comparisons...

Shaw, Ronnie Joe

1971-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Pressure-Dependent Properties of Elementary Hydrophobic Interactions: Ramifications for Activation Properties of Protein  

E-Print Network [OSTI]

Properties of Protein Folding Cristiano L. Dias*,§, and Hue Sun Chan*, § Department of Physics, New Jersey under 1, 1000, 2000, and 3000 atm. The volume distributions of pure water and of methanes plus water solvent conditions such as temperature, pressure, and cosolvents. An intuitive, semiquantitative physical

Chan, Hue Sun

382

E-Print Network 3.0 - adaptive morphological feature-based Sample...  

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

Morphology Summary: . Vis., 17:249-270, 2002. 14 F. Cheng and A. N. Venetsanopoulos. An adaptive morphological filter... features based on gabor filters. IEEE Trans. Image Proc.,...

383

Probing new physics with flavor physics (and probing flavor physics with new physics)  

E-Print Network [OSTI]

This is a written version of a series of lectures aimed at graduate students and postdoctoral fellows in particle theory/string theory/particle experiment familiar with the basics of the Standard Model. We begin with an overview of flavor physics and its implications for new physics. We emphasize the "new physics flavor puzzle". Then, we give four specific examples of flavor measurements and the lessons that have been (or can be) drawn from them: (i) Charm physics: lessons for supersymmetry from the upper bound on $\\Delta m_D$. (ii) Bottom physics: model independent lessons on the KM mechanism and on new physics in neutral B mixing from $S_{\\psi K_S}$. (iii) Top physics and beyond: testing minimal flavor violation at the LHC. (iv) Neutrino physics: interpreting the data on neutrino masses and mixing within flavor models.

Yosef Nir

2007-08-14T23:59:59.000Z

384

UC SANTA BARBARA POLICY AND PROCEDURE Physical Access Control  

E-Print Network [OSTI]

property. A successful program is dependent on every member of the community being diligent access controls are to enhance the personal safety of the campus community and to secure University physical access controls for all facilities managed by UCSB (University facilities). Physical access

Bigelow, Stephen

385

Physics 151 Lecture 1 Physics 207: Lecture 1, Pg 1  

E-Print Network [OSTI]

Page 1 Physics 151 ­ Lecture 1 Physics 207: Lecture 1, Pg 1 Physics 207, Sections: 301/601Physics 207, Sections: 301/601 ­­ 314/614314/614 General Physics IGeneral Physics I MichaelMichael Winokur of the courseScope of the course Begin chapter 1Begin chapter 1 Homepage:Homepage: http://romano.physics

Winokur, Michael

386

Panel report: nuclear physics  

SciTech Connect (OSTI)

Nuclear science is at the very heart of the NNSA program. The energy produced by nuclear processes is central to the NNSA mission, and nuclear reactions are critical in many applications, including National Ignition Facility (NIF) capsules, energy production, weapons, and in global threat reduction. Nuclear reactions are the source of energy in all these applications, and they can also be crucial in understanding and diagnosing the complex high-energy environments integral to the work of the NNSA. Nuclear processes are complex quantum many-body problems. Modeling and simulation of nuclear reactions and their role in applications, coupled tightly with experiments, have played a key role in NNSA's mission. The science input to NNSA program applications has been heavily reliant on experiment combined with extrapolations and physical models 'just good enough' to provide a starting point to extensive engineering that generated a body of empirical information. This body of information lacks the basic science underpinnings necessary to provide reliable extrapolations beyond the domain in which it was produced and for providing quantifiable error bars. Further, the ability to perform additional engineering tests is no longer possible, especially those tests that produce data in the extreme environments that uniquely characterize these applications. The end of testing has required improvements to the predictive capabilities of codes simulating the reactions and associated applications for both well known and well characterized cases as well as incompletely known cases. Developments in high performance computing, computational physics, applied mathematics and nuclear theory have combined to make spectacular advances in the theory of fission, fusion and nuclear reactions. Current research exploits these developments in a number of Office of Science and NNSA programs, and in joint programs such as the SciDAC (Science Discovery through Advanced Computing) that supports the project Building a Universal Nuclear Energy Density Fuctional whose goals are to provide the unified approach to calculating the properties of nuclei. The successful outcome of this, and similar projects is a first steps toward a predictive nuclear theory based on fundamental interactions between constituent nucleons. The application of this theory to the domain of nuclei important for national security missions will require computational resources at the extreme scale, beyond what will be available in the near term future.

Carlson, Joseph A [Los Alamos National Laboratory; Hartouni, Edward P [LLNL

2010-01-01T23:59:59.000Z

387

Whither Nuclear Physics ?  

E-Print Network [OSTI]

Nuclear Physics has had its ups and downs. However in recent years, bucked up by some new and often puzzling data, it has become a potentially very rich field. We review some of these exciting developments in a few important sectors of nuclear physics. Emphasis shall be on the study of exotic nuclei and the new physics that these nuclei are teaching us.

Syed Afsar Abbas

2008-01-07T23:59:59.000Z

388

in Condensed Matter Physics  

E-Print Network [OSTI]

Master in Condensed Matter Physics ­ Master académique #12;2 #12;3 Students at the University. Condensed matter physics is about explaining and predicting the relationship between the atomic, and broad education in the field of condensed matter physics · introduce you to current research topics

van der Torre, Leon

389

PHYSICS, QUALITATIVE BIBLIOGRAPHY  

E-Print Network [OSTI]

PHYSICS, QUALITATIVE C BIBLIOGRAPHY D. G. Bobrow and R J. Hayes, eds., Artif. Intell. 24," in Gentner and Stevens, 1983, pp. 155--190. J. de Kleer and J. S. Brown "A Qualitative Physics Based.J., 1983. P. Hayes, "The Naive Physics Manifesto," in Hobbs and Moore, 1985, pp 1--36 J R Hobbs and R C

de Kleer, Johan

390

B Physics at LHCb  

E-Print Network [OSTI]

LHCb is a dedicated detector for b physics at the LHC. In this article we present a concise review of the detector design and performance together with the main physics goals and their relevance for a precise test of the Standard Model and search of New Physics beyond it.

Monica Pepe Altarelli; Frederic Teubert

2008-02-13T23:59:59.000Z

391

Quantum Physics Einstein's Gravity  

E-Print Network [OSTI]

Quantum Physics confronts Einstein's Gravity Matt Visser Physics Department Washington University Saint Louis USA Science Saturdays 13 October 2001 #12; Quantum Physics confronts Einstein's Gravity and with Einstein's theory of gravity (the general relativity) is still the single biggest theoretical problem

Visser, Matt

392

Physical Probability Patrick Maher  

E-Print Network [OSTI]

Physical Probability Patrick Maher University of Illinois at Urbana-Champaign October 13, 2007 ABSTRACT. By "physical probability" I mean the empirical concept of probability in or- dinary language-extreme physical probabilities are compatible with determin- ism. Two principles, called specification

Fitelson, Branden

393

The influence of fluid properties on the morphology of core turbulence and the geomagnetic field  

E-Print Network [OSTI]

and thermal diffusivity (the Prandtl number, Pr) is 0.1 and 10. The Pr¼0.1 case is representative of thermal core is thought to be approximately 103 times weaker than the thermal diffusivity (e.g. Braginsky , respectively (Alfe´ et al., 2000; Vocadlo et al., 2003). In contrast, estimates for the thermal diffusivity

394

Author's personal copy Effect of polarization and morphology on the optical properties of absorbing  

E-Print Network [OSTI]

have been studied extensively in recent years [1­4]. Potential applications include dye-sensitized solar cells [5­7], low-k dielectric materials [8,9], thermal barrier coatings [10], catalysts [11

Pilon, Laurent

395

Effect of pore morphology on the electrochemical properties of electric double layer carbon cryogel supercapacitors  

E-Print Network [OSTI]

supercapacitors Betzaida Batalla García,1 Aaron M. Feaver,1 Qifeng Zhang,1 Richard D. Champion,1 Guozhong Cao,1,a at the low frequency range. Moreover, the impact of the micropore structure on the supercapacitor supercapacitor. Their tunable nanostruc- ture, high surface area SA , and good conductivity make them suitable

Cao, Guozhong

396

Investigation into the Morphology and Mechanical Properties of Melt-Drawn Filaments from  

E-Print Network [OSTI]

-density polyethylene (HDPE) were melt-processed in a single-screw extruder fitted with a fine screen mesh and capillary in extruder output rate in this region, an indicator of the melt interaction of the two phases as co

397

Comparative Analysis of the Morphology and Materials Properties of Pinniped Vibrissae  

E-Print Network [OSTI]

by a single eigendecomposition. Quadratic discriminant function analysis demonstrated that 79.3, 97.8 and 100% of individuals could be correctly classified to taxon based on vibrissal shape variables in the traditional, geometric and combined...

Ginter, Carly C.

2012-02-14T23:59:59.000Z

398

INTERRELATIONS OF COMPOSITIONS, TRANSFORMATION KINETICS, MORPHOLOGY, AND MECHANICAL PROPERTIES OF ALLOY STEELS  

E-Print Network [OSTI]

sensitive to hydrogen embrittlement, whereas high strengthembrittlement, A generally accepted embrittling mechanism for stress corrosion cracking of high strength steels involves hydrogen

Parker, E.R.

2010-01-01T23:59:59.000Z

399

Variation in Morphology, Hygroscopicity, and Optical Properties of Soot Particles Coated by Dicarboxylic Acids  

E-Print Network [OSTI]

particles upon coating with succinic and glutaric acids. The effective densities, fractal dimensions and dynamic shape factors of fresh and coated soot aerosol particles have been determined. Significant size-dependent increases of soot particle mobility...

Xue, Huaxin

2010-07-14T23:59:59.000Z

400

Quantifying effects of substrata chemomechanical properties on eukaryotic and prokaryotic cell adhesion and morphology  

E-Print Network [OSTI]

It is now widely accepted that cells are capable of processing both mechanical and chemical signals from the extracellular environment. Exactly how these two factors affect the cell biology in the context of physiological ...

Thompson, Michael Todd

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Morphological and adhesive properties of polypyrrole films synthesized by sonoelectrochemical technique  

E-Print Network [OSTI]

Metals 160, 23-24 (2010) 2540-2545" DOI : 10.1016/j.synthmet.2010.10.002 #12;2 the contrary, for polymer can be used for many various applications including: energy storage and batteries [3-5], field effect stability in air and aqueous media and ease of preparation by electrochemical polymerization. However

Paris-Sud XI, Université de

402

Thickness influence on surface morphology and ozone sensing properties of nanostructured ZnO transparent  

E-Print Network [OSTI]

, 71004 Heraklion, Crete, Greece Available online 19 January 2006 Abstract Transparent zinc oxide (Zn Keywords: Zinc oxide; PLD; AFM; Ozone 1. Introduction Zinc oxide (ZnO) is an n-type semiconductor devices [3], varistors, planar optical waveguides [4], transparent electrodes [5,6], ultraviolet

403

Morphological properties of pillared layered materials investigated by electron microscopy technique  

E-Print Network [OSTI]

. REFERENCES. 92 93 VITA 98 LIST OF FIGURES Figure Page 1 A model for the pillaring of smectite clays by hydrolyzed cations 2 Idealized structure of o-Zrp showing arrangement of the layers. 15 3 X-ray diffraction powder pattern of the nickel... intercalate a-ZrP product. . . . . . . . 16 4 SEM picture at 20, 000 of the nickel intecalate a-ZrP product 17 5 X-ray diffraction powder pattern of the nickel pillared a-ZrP product. 19 6 SEM picture at 20, 000x of the nickel pillared a-ZrP product. 20...

Navas de Mascianglioli, Margarit

1993-01-01T23:59:59.000Z

404

Morphology and mechanical properties of electrospun polymeric fibers and their nonwoven fabrics  

E-Print Network [OSTI]

Electrospinning is a straight forward method to produce fibers with diameter on the order of a few tens of nanometers to the size approaching commercial fibers (on the order of 10 prm or larger). Recently, the length scale ...

Pai, Chia-Ling

2011-01-01T23:59:59.000Z

405

Optical and morphological properties of graphene sheets decorated with ZnO nanowires via polyol enhancement  

SciTech Connect (OSTI)

Graphene-ZnO nanocomposites have proven to be very useful materials for photovoltaic and sensor applications. Here, we report a facile, one-step in situ polymerization method for synthesis of graphene sheets randomly decorated with zinc oxide nanowires using ethylene glycol as solvent. We have used hydrothermal treatment for growth of ZnO nanowires. UV-visible spectra peak shifting around 288nm and 307 nm shows the presence of ZnO on graphene structure. Photoluminiscence spectra (PL) in 400nm-500nm region exhibits the luminescence quenching effect. Scanning electron microscopy (SEM) image confirms the growth of ZnO nanowires on graphene sheets.

Sharma, Vinay, E-mail: winn201@gmail.com; Rajaura, Rajveer Singh, E-mail: winn201@gmail.com [Centre for Converging Technologies, University of Rajasthan, Jaipur - 302004 (India); Sharma, Preetam K.; Srivastava, Subodh; Vijay, Y. K. [Department of Physics, Thin Film and Membrane Science Lab., University of Rajasthan, Jaipur - 302004 (India); Sharma, S. S. [Department of Physics, Govt. Women Engineering College, Ajmer- 305002 (India)

2014-04-24T23:59:59.000Z

406

IEEE TRANSACTIONS ON MAGNETICS, VOL. 40, NO. 4, JULY 2004 2867 Crystallization, Morphology and Magnetic Properties  

E-Print Network [OSTI]

with a molybdenum wheel speed of 35 m/s. Before annealing, the ribbons were ball milled in acetone for 1 h in a low-energy ball mill to form powders with particle 44 m. The melt-spun samples were annealed at temperatures from

Liu, J. Ping

407

Environment of deposition of the Yowlumne sandstone: internal morphology and rock properties, Kern County, California  

E-Print Network [OSTI]

. This is of utmost importance when enhanced oil recovery methods are necessary to maximize production. The Yowlumne field in Kern County, California, has been a chal- lenge for geologists and engineers since its discovery in 1974. The field has been extensively.../25 428/30 45/27 863/9 11440 aInformation from California Division of Oil and Gas. Kelly Bushing elevation. cProduction; BOPD = barrels of oil per day, BW = Barrels of water per day, NA = Not Available. dDepth of oil-water contact; estimated from...

Royo, Gilberto Rafael

1986-01-01T23:59:59.000Z

408

Physics at Strathclyde N. Langford  

E-Print Network [OSTI]

#12;Physics at Strathclyde N. Langford Department of Physics University of Strathclyde #12 and Misconceptions o "There's no money in physics" o "I like the idea of a physics degree but what actual jobs do physics degree is great ­ if you want to teach physics" Untrue Physics leads to engineering NO

Mottram, Nigel

409

The physics of liquid water Bernard Cabane1  

E-Print Network [OSTI]

with extraordinary properties: it has unusually high melting and boiling temperatures, a huge heat capacity, oneThe physics of liquid water Bernard Cabane1 , Rodolphe Vuilleumier2 1 PMMH, ESPCI, 10 rue Vauquelin, France Abstract Liquid water is a liquid with extraordinary properties: it has a very high cohesion

Paris-Sud XI, Université de

410

Master of Science project in computational material physics  

E-Print Network [OSTI]

Master of Science project in computational material physics (2013-04-26) Engineering of ultra of remarkable properties of these materials. The temperature, pressure and doping driven transitions between correlations. Project Investigating the influence of biaxial strain on electronic properties such as self

Hellsing, Bo

411

Physics 116A Winter 2011 The Alternating Series Test  

E-Print Network [OSTI]

Physics 116A Winter 2011 The Alternating Series Test An alternating series is defined to be a series of the form: S = n=0 (-1)n an , (1) where all the an > 0. The alternating series test is a set and/or property 2 do not hold, then the alternating series test is inconclusive. Note that property 1

California at Santa Cruz, University of

412

Physics 116A Winter 2011 The Alternating Series Test  

E-Print Network [OSTI]

Physics 116A Winter 2011 The Alternating Series Test An alternating series is defined to be a series of the form: S = # # n=0 (-1) n a n , (1) where all the a n > 0. The alternating series test but property 1 and/or property 2 do not hold, then the alternating series test is inconclusive. Note

California at Santa Cruz, University of

413

Neutrino Oscillation Physics  

E-Print Network [OSTI]

To complement the neutrino-physics lectures given at the 2011 International School on Astro Particle Physics devoted to Neutrino Physics and Astrophysics (ISAPP 2011; Varenna, Italy), at the 2011 European School of High Energy Physics (ESHEP 2011; Cheila Gradistei, Romania), and, in modified form, at other summer schools, we present here a written description of the physics of neutrino oscillation. This description is centered on a new way of deriving the oscillation probability. We also provide a brief guide to references relevant to topics other than neutrino oscillation that were covered in the lectures.

Boris Kayser

2013-12-25T23:59:59.000Z

414

On the physical basis of cosmic time  

E-Print Network [OSTI]

In this manuscript we initiate a systematic examination of the physical basis for the time concept in cosmology. We discuss and defend the idea that the physical basis of the time concept is necessarily related to physical processes which could conceivably take place among the material constituents available in the universe. It is common practice to link the concept of cosmic time with a space-time metric set up to describe the universe at large scales, and then define a cosmic time $t$ as what is measured by a comoving standard clock. We want to examine, however, the physical basis for setting up a comoving reference frame and, in particular, what could be meant by a standard clock. For this purpose we introduce the concept of a `core' of a clock (which, for a standard clock in cosmology, is a scale-setting physical process) and we ask if such a core can--in principle--be found in the available physics contemplated in the various `stages' of the early universe. We find that a first problem arises above the quark-gluon phase transition (which roughly occurs when the cosmological model is extrapolated back to $\\sim 10^{-5}$ seconds) where there might be no bound systems left, and the concept of a physical length scale to a certain extent disappears. A more serious problem appears above the electroweak phase transition believed to occur at $\\sim 10^{-11}$ seconds. At this point the property of mass (almost) disappears and it becomes difficult to identify a physical basis for concepts like length scale, energy scale and temperature -- which are all intimately linked to the concept of time in modern cosmology. This situation suggests that the concept of a time scale in `very early' universe cosmology lacks a physical basis or, at least, that the time scale will have to be based on speculative new physics.

Svend Erik Rugh; Henrik Zinkernagel

2008-05-13T23:59:59.000Z

415

Faculty Position Therapeutic Medical Physics  

E-Print Network [OSTI]

spectroscopy, fluoroscopy, ultrasound, digital radiography, and nuclear medicine. The Colorado State University of subjects in Radiation Therapy Physics, Medical Imaging Physics, and Radiological Physics and Dosimetry

416

PROPERTY MANUAL Berkeley Laboratory Property Management  

E-Print Network [OSTI]

of Energy (DOE). The Property Management charter ensures the efficient and effective protection and controlPROPERTY MANUAL Issued by Berkeley Laboratory Property Management Lawrence Berkeley National of Property Management Policies · I. Parties and Organizations Responsible for Property · II. Acquiring

Knowles, David William

417

Thermally induced evolution of morphology on ceramic surfaces in a thermionic converter  

SciTech Connect (OSTI)

The morphology of alumina and scandia ceramics exposed to controlled vacuum and diffusion modes in a thermionic converter has been studied. Evidence for vaporization at a temperature of 1770 K is manifest in the resulting surface morphologies of both ceramics, consistent with reported sample mass loss. Alumina shows intergranular relief with the formation of terrace-step structure on the grain surfaces. Terrace formation is not directly observed on scandia, however the development of vertical structure and maintenance of voids indicates that vaporization is initiated by structure at the grain edges. Extensive Sc{sub 2}O{sub 3} re-deposition occurs on the scandia surface, possibly mediated by the presence of molybdenum and tungsten. Evidence exists for refractory metal secondary phase formation in this deposit in the form of Sc{sub 6}MO{sub 12} (M=W or Mo). Alumina also shows evidence for materials{close_quote} interactions in the form of tantalum assisted vaporization which significantly alters the terrace structure. {copyright} {ital 1997 American Institute of Physics.}

Zavadil, K.R. [Sandia National Laboratories P.O. Box 5800 Albuquerque, New Mexico87185-0342 (United States); Olson, D.L. [Team Specialty Services 901 University Blvd. SE Albuquerque, New Mexico87106-4439 (United States); Klinkov, A.E. [JS INTERTEK 123182Moscow Kurchatov Sq. 1 (Russian Federation)

1997-01-01T23:59:59.000Z

418

AN IMPRINT OF MOLECULAR CLOUD MAGNETIZATION IN THE MORPHOLOGY OF THE DUST POLARIZED EMISSION  

SciTech Connect (OSTI)

We describe a morphological imprint of magnetization found when considering the relative orientation of the magnetic field direction with respect to the density structures in simulated turbulent molecular clouds. This imprint was found using the Histogram of Relative Orientations (HRO), a new technique that utilizes the gradient to characterize the directionality of density and column density structures on multiple scales. We present results of the HRO analysis in three models of molecular clouds in which the initial magnetic field strength is varied, but an identical initial turbulent velocity field is introduced, which subsequently decays. The HRO analysis was applied to the simulated data cubes and mock-observations of the simulations produced by integrating the data cube along particular lines of sight. In the three-dimensional analysis we describe the relative orientation of the magnetic field B with respect to the density structures, showing that: (1) the magnetic field shows a preferential orientation parallel to most of the density structures in the three simulated cubes, (2) the relative orientation changes from parallel to perpendicular in regions with density over a critical density n{sub T} in the highest magnetization case, and (3) the change of relative orientation is largest for the highest magnetization and decreases in lower magnetization cases. This change in the relative orientation is also present in the projected maps. In conjunction with simulations, HROs can be used to establish a link between the observed morphology in polarization maps and the physics included in simulations of molecular clouds.

Soler, J. D.; Netterfield, C. B.; Fissel, L. M. [Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H4 (Canada); Hennebelle, P. [Laboratoire de Radioastronomie, Ecole Normale Superiure and Observatoire de Paris, UMR CNRS 8112. 24 rue Lhomond F-75231 Paris Cedex 05 (France); Martin, P. G.; Miville-Deschenes, M.-A., E-mail: soler@astro.utoronto.ca [Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George Street, Toronto, ON M5S 3H8 (Canada)

2013-09-10T23:59:59.000Z

419

Physics high-ranking Journals (category 2) Advances in Physics  

E-Print Network [OSTI]

Physics high-ranking Journals (category 2) Advances in Physics Annual Review of Astronomy and Astrophysics Annual Review of Nuclear and Particle Science Applied Physics Letters Astronomy & Astrophysics Astronomy and Astrophysics Review Astrophysical Journal European Physical Journal D. Atomic, Molecular

420

Part I STATISTICAL PHYSICS 1 Statistical Physics  

E-Print Network [OSTI]

In this first part of the book we shall study aspects of classical statistical physics that every physicist should know, but are not usually treated in elementary thermodynamics courses. Our study will lay the microphysical (particle-scale) foundations for the continuum physics of Parts II—VI. As a central feature of our approach, we shall emphasize the intimate connections between the relativistic formulation of statistical physics and its nonrelativistic limit, and between quantum statistical physics and the classical theory. Throughout, we shall presume that the reader is familiar with elementary thermodynamics, but not with other aspects of statistical physics. In Chap. 2 we will study kinetic theory — the simplest of all formalisms for analyzing systems of huge numbers of particles (e.g., molecules of air, or neutrons diffusing through a nuclear reactor, or photons produced in the big-bang origin of the Universe). In kinetic theory the key concept is the “distribution function ” or “number density of particles in phase space”, N; i.e., the number of particles per unit 3-dimensional volume of ordinary space and per unit 3-dimensional volume of momentum space. Despite first appearances, N turns out to be a geometric, frame-independent entity. This N and the frame-independent laws it

unknown authors

Note: This page contains sample records for the topic "morphology physical properties" 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

Part I STATISTICAL PHYSICS 1 Statistical Physics  

E-Print Network [OSTI]

In this first part of the book we shall study aspects of classical statistical physics that every physicist should know, but are not usually treated in elementary thermodynamics courses. Our study will lay the microphysical (particle-scale) foundations for the continuum physics of Parts II—VI. As a central feature of our approach, we shall emphasize the intimate connections between the relativistic formulation of statistical physics and its nonrelativistic limit, and between quantum statistical physics and the classical theory. Throughout, we shall presume that the reader is familiar with elementary thermodynamics, but not with other aspects of statistical physics. In Chap. 2 we will study kinetic theory — the simplest of all formalisms for analyzing systems of huge numbers of particles (e.g., molecules of air, or neutrons diffusing through a nuclear reactor, or photons produced in the big-bang origin of the Universe). In kinetic theory the key concept is the “distribution function ” or “number density of particles in phase space”, N; i.e., the number of particles per unit 3-dimensional volume of ordinary space and per unit 3-dimensional volume of momentum space. Despite first appearances, N turns out to be a geometric, frame-independent entity. This N and the frame-independent laws it

unknown authors

2004-01-01T23:59:59.000Z

422

Part I STATISTICAL PHYSICS 1 Statistical Physics  

E-Print Network [OSTI]

In this first part of the book we shall study aspects of classical statistical physics that every physicist should know but are not usually treated in elementary thermodynamics courses. This study will lay the microphysical (particle-scale) foundations for the continuum physics of Parts II—VI. Throughout, we shall presume that the reader is familiar with elementary thermodynamics, but not with other aspects of statistical physics. As a central feature of our approach, we shall emphasize the intimate connections between the relativistic formulation of statistical physics and its nonrelativistic limit, and between quantum statistical physics and the classical theory. Chapter 2 will deal with kinetic theory, which is the simplest of all formalisms for studying systems of huge numbers of particles (e.g., molecules of air, or neutrons diffusing through a nuclear reactor, or photons produced in the big-bang origin of the Universe). In kinetic theory the key concept is the “distribution function ” or “number density of particles in phase space”, N; i.e., the number of particles per unit 3-dimensional volume of ordinary space and per unit 3-dimensional volume of momentum space. Despite first appearances, N turns out to be a geometric, frame-independent entity. This N and the laws it obeys provide

unknown authors

423

Historic Properties  

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 theinPlasticsreduction .Historic Properties

424

Current experiments in elementary particle physics  

SciTech Connect (OSTI)

This report contains summaries of 736 current and recent experiments in elementary particle physics (experiments that finished taking data before 1982 are excluded). Included are experiments at Brookhaven, CERN, CESR, DESY, Fermilab, Tokyo Institute of Nuclear Studies, Moscow Institute of Theoretical and Experimental Physics, Joint Institute for Nuclear Research (Dubna), KEK, LAMPF, Novosibirsk, PSI/SIN, Saclay, Serpukhov, SLAC, and TRIUMF, and also several underground experiments. Also given are instructions for searching online the computer database (maintained under the SLAC/SPIRES system) that contains the summaries. Properties of the fixed-target beams at most of the laboratories are summarized.

Wohl, C.G.; Armstrong, F.E.; Trippe, T.G.; Yost, G.P. (Lawrence Berkeley Lab., CA (USA)); Oyanagi, Y. (Tsukuba Univ., Ibaraki (Japan)); Dodder, D.C. (Los Alamos National Lab., NM (USA)); Ryabov, Yu.G.; Slabospitsky, S.R. (Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Serpukhov (USSR). Inst. Fiziki Vysokikh Ehnergij); Frosch, R. (Swiss Inst. for Nuclear Research, Villigen (Switzerla

1989-09-01T23:59:59.000Z

425

Ph.D. Physics Program Ph.D. in Physics  

E-Print Network [OSTI]

Ph.D. Physics Program Ph.D. in Physics Department(s) Physics and Astronomy College Sciences Program Assessment Coordinator Michael Pravica pravica@physics.unlv.edu 895-1723 Five-Year Implementation Dates (2010 for physics at the graduate level 4. understand statistical physics at the graduate level 5. perform

Hemmers, Oliver

426

THE PHYSICS MAJOR (Physics and Astronomy & Astrophysics Streams)  

E-Print Network [OSTI]

THE PHYSICS MAJOR (Physics and Astronomy & Astrophysics Streams) Overview: Physics examines, to the behaviour of matter on the subatomic scale - and everything in between. Studying Physics at UWA gives you access to the frontiers of modern physics, built on the pillars of quantum physics and relativity. You

Tobar, Michael

427

Incorporating Optics into a Coupled Physical-Biological Forecasting System in the Monterey Bay  

E-Print Network [OSTI]

Incorporating Optics into a Coupled Physical-Biological Forecasting System in the Monterey Bay Fei://www.marine.maine.edu/~eboss/index.html http://ourocean.jpl.nasa.gov/ LONG-TERM GOALS Modeling and predicting ocean optical properties for coastal waters requires linking optical properties with the physical, chemical, and biological processes

Boss, Emmanuel S.

428

Physics Topics - MST - UW Plasma Physics  

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 RegionatSearch Welcome to theNews & Blog »Physics Physics Print

429

Morphological and electrochemical characterization of electrodeposited Zn–Ag nanoparticle composite coatings  

SciTech Connect (OSTI)

Silver nanoparticles with an average size of 23 nm were chemically synthesized and used to fabricate Zn–Ag composite coatings. The Zn–Ag composite coatings were generated by electrodeposition method using a simple sulfate plating bath dispersed with 0.5, 1 and 1.5 g/l of Ag nanoparticles. Scanning electron microscopy, X-ray diffraction and texture co-efficient calculations revealed that Ag nanoparticles appreciably influenced the morphology, micro-structure and texture of the deposit. It was also noticed that agglomerates of Ag nanoparticles, in the case of high bath load conditions, produced defects and dislocations on the deposit surface. Ag nanoparticles altered the corrosion resistance property of Zn–Ag composite coatings as observed from Tafel polarization, electrochemical impedance analysis and an immersion test. Reduction in corrosion rate with increased charge transfer resistance was observed for Zn–Ag composite coatings when compared to a pure Zn coating. However, the particle concentration in the plating bath and their agglomeration state directly influenced the surface morphology and the subsequent corrosion behavior of the deposits. - Highlights: • Synthesis of Ag nanoparticles with an average size of 23 nm • Fabrication of Zn/nano Ag composite coating on mild steel • Composite coatings showed better corrosion resistance. • Optimization of particle concentration is necessary.

Punith Kumar, M.K.; Srivastava, Chandan, E-mail: csrivastava@materials.iisc.ernet.in

2013-11-15T23:59:59.000Z

430

The effect of phosphorus on the formation of tungsten dioxide: A novel morphology  

SciTech Connect (OSTI)

The industrial production of tungsten is based on the hydrogen reduction of tungsten oxides, ammonium paratungstate (APT) or ammonium tungsten oxide bronze (ATOB). Hydrogen reduction is applied when high purity tungsten is required and when the addition of other elements or compounds (dopants) is desired for modification of the properties of the metal powder. The first stage of the reduction is finished when WO{sub 2} is formed and it seems that the efficient incorporation of the additives starts mainly at this reduction step. The study reported here was undertaken to investigate the effect of phosphorus dope on the morphology of the intermediate tungsten dioxide and analyze its influence on the grain size of the final tungsten metal powder. The authors observed star shaped morphology of WO{sub 2}, a structure which has not been describe in the literature. Contrary to the well-known cauliflower shaped tungsten dioxide, these starlets are not pseudomorphic to the initial ATOB particles; they grow separately and have a great influence on the grain size of the final metal powder.

Hegedus, E.; Neugebauer, J. [Hungarian Academy of Sciences, Budapest (Hungary). Research Inst. for Technical Physics and Materials Science] [Hungarian Academy of Sciences, Budapest (Hungary). Research Inst. for Technical Physics and Materials Science

1999-02-19T23:59:59.000Z

431

Cellulose nanocrystal from pomelo (C. Grandis osbeck) albedo: Chemical, morphology and crystallinity evaluation  

SciTech Connect (OSTI)

Citrus peel is one of the under-utilized waste materials that have potential in producing a valuable fibre, which are cellulose and cellulose nanocrystal. Cellulose was first isolated from pomelo (C. Grandis Osbeck) albedo by combination of alkali treatment and bleaching process, followed by acid hydrolysis (65% H{sub 2}SO{sub 4}, 45 °C, 45min) to produce cellulose nanocrystal. The crystalline, structural, morphological and chemical properties of both materials were studied. Result reveals the crystallinity index obtained from X-ray diffraction for cellulose nanocrystal was found higher than extracted cellulose with the value of 60.27% and 57.47%, respectively. Fourier transform infrared showed that the chemical treatments removed most of the hemicellulose and lignin from the pomelo albedo fibre. This has been confirmed further by SEM and TEM for their morphological studies. These results showed that cellulose and cellulose nanocrystal were successfully obtained from pomelo albedo and might be potentially used in producing functional fibres for food application.

Zain, Nor Fazelin Mat; Yusop, Salma Mohamad [Food Science Program, School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor (Malaysia); Ahmad, Ishak [Polymer Research Centre (PORCE), School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor (Malaysia)

2013-11-27T23:59:59.000Z

432

Controlled powder morphology experiments in megabar 304 stainless steel compaction  

SciTech Connect (OSTI)

Experiments with controlled morphology including shape, size, and size distribution were made on 304L stainless steel powders. These experiments involved not only the powder variables but pressure variables of 0.08 to 1.0 Mbar. Also included are measured container strain on the material ranging from 1.5% to 26%. Using a new strain controllable design it was possible to seperate and control, independently, strain and pressure. Results indicate that powder morphology, size distribution, packing density are among the pertinent parameters in predicting compaction of these powders.

Staudhammer, K.P.; Johnson, K.A.

1985-01-01T23:59:59.000Z

433

Characterizing cluster morphology using vector-valued Minkowski functionals  

E-Print Network [OSTI]

The morphology of galaxy clusters is quantified using Minkowski functionals, especially the vector-valued ones, which contain directional information and are related to curvature centroids. The asymmetry of clusters and the amount of their substructure can be characterized in a unique way using these measures. -- We briefly introduce vector-valued Minkowski functionals (also known as Querma\\ss vectors) and suggest their application to cluster data in terms of a morphological characterization of excursion sets. Furthermore, we develop robust structure functions which describe the dynamical state of a cluster and study the evolution of clusters using numerical simulations.

Claus Beisbart; Thomas Buchert

1997-11-04T23:59:59.000Z

434

Symmetries in physics  

E-Print Network [OSTI]

The concept of symmetries in physics is briefly reviewed. In the first part of these lecture notes, some of the basic mathematical tools needed for the understanding of symmetries in nature are presented, namely group theory, Lie groups and Lie algebras, and Noether's theorem. In the second part, some applications of symmetries in physics are discussed, ranging from isospin and flavor symmetry to more recent developments involving the interacting boson model and its extension to supersymmetries in nuclear physics.

Roelof Bijker

2005-09-02T23:59:59.000Z

435

Physics at LHC  

E-Print Network [OSTI]

The prospects for physics at the LHC are discussed, starting with the foretaste, preparation (and perhaps scoop) provided by the Tevatron, in particular, and then continuing through the successive phases of LHC operation. These include the start-up phase, the early physics runs, the possible search for new physics in double diffraction, the continuation to nominal LHC running, and the possible upgrade of the LHC luminosity. Emphasis is placed on the prospects for Higgs physics and the search for supersymmetry. The progress and discoveries of the LHC will set the time-scale and agenda for the major future accelerator projects that will follow it.

John Ellis

2006-11-17T23:59:59.000Z

436

Cosmology and New Physics  

E-Print Network [OSTI]

A comparison of the standard models in particle physics and in cosmology demonstrates that they are not compatible, though both are well established. Basics of modern cosmology are briefly reviewed. It is argued that the measurements of the main cosmological parameters are achieved through many independent physical phenomena and this minimizes possible interpretation errors. It is shown that astronomy demands new physics beyond the frameworks of the (minimal) standard model in particle physics. More revolutionary modifications of the basic principles of the theory are also discussed.

A. D. Dolgov

2006-06-21T23:59:59.000Z

437

Nuclear Physics from QCD  

E-Print Network [OSTI]

Effective field theories provide a bridge between QCD and nuclear physics. I discuss light nuclei from this perspective, emphasizing the role of fine-tuning.

U. van Kolck

2008-12-20T23:59:59.000Z

438

High Energy Physics  

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

Large Scale Production Computing and Storage Requirements for High Energy Physics: Target 2017 HEPlogo.jpg The NERSC Program Requirements Review "Large Scale Computing and Storage...

439

Advances in Physical Chemistry  

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

Hindawi Publishing Corporation Advances in Physical Chemistry Volume 2011, Article ID 907129, 18 pages doi:10.11552011907129 Review Article Contrast and Synergy between...

440

Physical Protection Program Manual  

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

Supplements DOE O 473.1, by establishing requirements for the physical protection of safeguards and security interests. Cancels: DOE M 5632.1C-1

2002-12-23T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

Electrodeposited ZnO films with high UV emission properties  

SciTech Connect (OSTI)

Highlights: {yields} Electrodeposition of ZnO from nitrate baths is investigated. {yields} The influence of process parameters on morphological and optical properties is studied. {yields} Experimental conditions to fabricate ZnO films with high UV emission were found. -- Abstract: We report here our results in the preparation of ZnO films with high UV band to band characteristic luminescence emission by potentiostatic electrodeposition. Zinc nitrate aqueous baths with different concentration and additives were employed for the preparation of the films on platinum substrates. We focused our research in determining how the electrodeposition bath composition, i.e. zinc nitrate concentration and addition of KCl or polyvinyl pyrolidone and applied overpotential influence the morphological and optical properties of the oxide films. Scanning electron microscopy was employed for characterizing the films in terms of morphology. Optical reflection, photoluminescence spectroscopy and cathodoluminescence were used for determining the optical characteristics of the samples. The morphology of the deposit varies from hexagonal prisms to platelets as a function of the deposition rate. This experimental parameter also influences the luminescence properties. We found that at low deposition rates high UV luminescent material is obtained.

Matei, Elena [National Institute of Materials Physics, PO Box MG 7, 77125 Magurele, Ilfov (Romania)] [National Institute of Materials Physics, PO Box MG 7, 77125 Magurele, Ilfov (Romania); Enculescu, Ionut, E-mail: encu@infim.ro [National Institute of Materials Physics, PO Box MG 7, 77125 Magurele, Ilfov (Romania)] [National Institute of Materials Physics, PO Box MG 7, 77125 Magurele, Ilfov (Romania)

2011-11-15T23:59:59.000Z

442

Handbook of gas hydrate properties and occurrence  

SciTech Connect (OSTI)

This handbook provides data on the resource potential of naturally occurring hydrates, the properties that are needed to evaluate their recovery, and their production potential. The first two chapters give data on the naturally occurring hydrate potential by reviewing published resource estimates and the known and inferred occurrences. The third and fourth chapters review the physical and thermodynamic properties of hydrates, respectively. The thermodynamic properties of hydrates that are discussed include dissociation energies and a simplified method to calculate them; phase diagrams for simple and multi-component gases; the thermal conductivity; and the kinetics of hydrate dissociation. The final chapter evaluates the net energy balance of recovering hydrates and shows that a substantial positive energy balance can theoretically be achieved. The Appendices of the Handbook summarize physical and thermodynamic properties of gases, liquids and solids that can be used in designing and evaluating recovery processes of hydrates. 158 references, 67 figures, 47 tables.

Kuustraa, V.A.; Hammershaimb, E.C.

1983-12-01T23:59:59.000Z

443

4.September.2013 Physics 3340  

E-Print Network [OSTI]

4.September.2013 Physics 3340 Principles of Environmental Physics Instructor: Brad de Young Physics and Physical Oceanography Memorial University, bdeyoung@physics.mun.ca Room C-3000 864-8738 The course will focus on basic physical principles of light, heat, energy and sound in the natural environment. For us

deYoung, Brad

444

Structural, morphological, and electrical characteristics of the electrodeposited cobalt oxide electrode for supercapacitor applications  

SciTech Connect (OSTI)

Cobalt oxide (Co{sub 3}O{sub 4}) thin films were prepared through electrodeposition on copper substrates using an ammonia-complexed cobalt chloride solution. The structural and morphological properties of the film were studied using an X-ray diffractometer and scanning electron microscopy, and the results showed that the electrodeposited cobalt oxide film had a nanocrystalline and porous structure. The electrochemical behavior of the electrodeposited cobalt oxide electrode was evaluated in a KOH solution using cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge-discharge tests. The electrodeposited cobalt oxide electrode exhibited a specific capacitance of 235 F/g at a scan rate of 20 mV/s. The specific energy and the specific power of the electrode were 4.0 Wh/kg and 1.33 kW/kg, respectively.

Kandalkar, Sunil G.; Lee, Hae-Min [Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, San 5, Woncheon-dong, Yeongtong-gu, Suwon 443-749 (Korea, Republic of)] [Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, San 5, Woncheon-dong, Yeongtong-gu, Suwon 443-749 (Korea, Republic of); Chae, Heeyeop [Department of Chemical Engineering, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of)] [Department of Chemical Engineering, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Kim, Chang-Koo, E-mail: changkoo@ajou.ac.kr [Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, San 5, Woncheon-dong, Yeongtong-gu, Suwon 443-749 (Korea, Republic of)] [Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, San 5, Woncheon-dong, Yeongtong-gu, Suwon 443-749 (Korea, Republic of)

2011-01-15T23:59:59.000Z

445

Influences of semiconductor morphology on the mechanical fatigue behavior of flexible organic electronics  

SciTech Connect (OSTI)

The influence of crystalline morphology on the mechanical fatigue of organic semiconductors (OSCs) was investigated using 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) as a crystalline OSC and poly(triarylamine) (PTAA) as an amorphous OSC. During cyclic bending, resistances of the OSCs were monitored using the transmission-line method on a metal-semiconductor-metal structure. The resistance of the TIPS-pentacene increased under fatigue damage in tensile-stress mode, but no such degradation was observed in the PTAA. Both OSCs were stable under compressive bending fatigue. The formation of intergranular cracks at the domain boundaries of the TIPS-pentacene was responsible for the degradation of its electrical properties under tensile bending fatigue.

Lee, Young-Joo; Yeon, Han-Wool; Shin, Hae-A-Seul; Joo, Young-Chang, E-mail: ycjoo@snu.ac.kr [Department of Materials Science and Engineering, Seoul National University, 151-744 Seoul (Korea, Republic of)] [Department of Materials Science and Engineering, Seoul National University, 151-744 Seoul (Korea, Republic of); Uk Lee, Yong; Evans, Louise A. [Center for Process Innovation Limited, Thomas Wright Way, NETPark, Sedgefield, TS21 3FG County Durham (United Kingdom)] [Center for Process Innovation Limited, Thomas Wright Way, NETPark, Sedgefield, TS21 3FG County Durham (United Kingdom)

2013-12-09T23:59:59.000Z

446

Physics 129 Nuclear and Particle Physics  

E-Print Network [OSTI]

, homework solutions, handouts and announcements will be posted at my course web site: http://scipp.ucsc.edu/daw/phys129/enrolled This web site is password protected. The username and password will be announced materials will be distributed on the web site above. Nine texts on nuclear and particle physics, all

California at Santa Cruz, University of

447

The Effect of Processing Parameters on the Thermoelectric Properties of Magnesium Silicide  

E-Print Network [OSTI]

bulk nanostructured magnesium silicide (Mg2Si) compounds,”physical metallurgy of magnesium and its alloys. Pergamonthe Thermoelectric Properties of Magnesium Silicide A Thesis

Fong, Anthony

2012-01-01T23:59:59.000Z

448

E-Print Network 3.0 - antarctic ice properties Sample Search...  

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

and physical properties pre- served within the permanent ice... is expected to produce a long history, possibly ICE CORE PALEOCLIMATE HISTORIES FROM THE ANTARCTIC...

449

Properties of Proto--Planetary Nebulae  

E-Print Network [OSTI]

This review describes some general properites of proto-planetary nebulae with particular emphasis on the recent work of morpholgical studies. The weight of observational evidence shows that proto-planetary nebulae (PPNe) are most certainly axisymmetric like planetary nebulae. Recent work suggests two subclasses of PPNe optical morphology, DUst-Prominent Longitudinally-EXtended (DUPLEX) and Star-Obvious Low-level Elongated (SOLE). Radiative transfer models of an example DUPLEX PPN and SOLE PPN, presented here, support the interpretation that DUPLEX and SOLE are two physically distinct types of PPNe. The DUPLEX PPNe and SOLE PPNe may well be the precursors to bipolar and elliptical PNe, respectively.

M. Meixner

2000-02-18T23:59:59.000Z

450

Review of Particle Physics, 2010-2011  

E-Print Network [OSTI]

This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2158 new measurements from 551 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. Among the 108 reviews are many that are new or heavily revised including those on neutrino mass, mixing, and oscillations, QCD, top quark, CKM quark-mixing matrix, Vud & Vus, Vcb & Vub, fragmentation functions, particle detectors for accelerator and non-accelerator physics, magnetic monopoles, cosmological parameters, and big bang cosmology.

Nakamura, K; Hikasa, K; Murayama, H; Tanabashi, M; Watari, T; Amsler, C; Antonelli, M; Asner, D M; Baer, H; Band, H R; Barnett, R M; Basaglia, T; Bergren, E; Beringer, J; Bernardi, G; Bertl, W; Bichsel, H; Biebel, O; Blucher, E; Blusk, S; Cahn, R N; Carena, M; Ceccucci, A; Chakraborty, D; Chen, M-C; Chivukula, R S; Cowan, G; Dahl, O; D’Ambrosio, G; Damour, T; de Florian, D; de Gouvêa, A; DeGrand, T; Dissertori, G; Dobrescu, B; Doser, M; Drees, M; Edwards, D A; Eidelman, S; Erler, J; Ezhela, V V; Fetscher, W; Fields, B D; Foster, B; Gaisser, T K; Garren, L; Gerber, H-J; Gerbier, G; Gherghetta, T; Giudice, G F; Golwala, S; Goodman, M; Grab, C; Gritsan, A V; Grivaz, J-F; Groom, D E; Grünewald, M; Gurtu, A; Gutsche, T; Haber, H E; Hagmann, C; Hayes, K G; Heffner, M; Heltsley, B; Hernández-Rey, J J; Höcker, A; Holder, J; Huston, J; Jackson, J D; Johnson, K F; Junk, T; Karle, A; Karlen, D; Kayser, B; Kirkby, D; Klein, S R; Kolda, C; Kowalewski, R V; Krusche, B; Kuyanov, Yu V; Kwon, Y; Lahav, O; Langacker, P; Liddle, A; Ligeti, Z; Lin, C-J; Liss, T M; Littenberg, L; Lugovsky, K S; Lugovsky, S B; Lys, J; Mahlke, H; Mannel, T; Manohar, A V; Marciano, W J; Martin, A D; Masoni, A; Milstead, D; Miquel, R; Mönig, K; Narain, M; Nason, P; Navas, S; Nevski, P; Nir, Y; Olive, K A; Pape, L; Patrignani, C; Peacock, J A; Petcov, S T; Piepke, A; Punzi, G; Quadt, A; Raby, S; Raffelt, G; Ratcliff, B N; Richardson, P; Roesler, S; Rolli, S; Romaniouk, A; Rosenberg, L J; Rosner, J L; Sachrajda, C T; Sakai, Y; Salam, G P; Sarkar, S; Sauli, F; Schneider, O; Scholberg, K; Scott, D; Seligman, W G; Shaevitz, M H; Silari, M; Sjöstrand, T; Smith, J G; Smoot, G F; Spanier, S; Spieler, H; Stahl, A; Stanev, T; Stone, S L; Sumiyoshi, T; Syphers, M J; Terning, J; Titov, M; Tkachenko, N P; Törnqvist, N A; Tovey, D; Trippe, T G; Valencia, G; van Bibber, K; Venanzoni, G; Vincter, M G; Vogel, P; Vogt, A; Walkowiak, W; Walter, C W; Ward, D R; Webber, B R; Weiglein, G; Weinberg, E J; Wells, J D; Wheeler, A; Wiencke, L R; Wohl, C G; Wolfenstein, L; Womersley, J; Woody, C L; Workman, R L; Yamamoto, A; Yao, W-M; Zenin, O V; Zhang, J; Zhu, R-Y; Zyla, P A; Harper, G; Lugovsky, V S; Schaffner, P

2010-01-01T23:59:59.000Z

451

Anthropic considerations in nuclear physics  

E-Print Network [OSTI]

In this short review, I discuss the sensitivity of the generation of the light and the life-relevant elements like carbon and oxygen under changes of the parameters of the Standard Model pertinent to nuclear physics. Chiral effective field theory allows for a systematic and precise description of the forces between two, three, and four nucleons. In this framework, variations under the light quark masses and the electromagnetic fine structure constant can also be consistently calculated. Combining chiral nuclear effective field theory with Monte Carlo simulations allows to further calculate the properties of nuclei, in particular of the Hoyle state in carbon, that plays a crucial role in the generation of the life-relevant elements in hot, old stars. The dependence of the triple-alpha process on the fundamental constants of Nature is calculated and some implications for our anthropic view of the Universe are discussed.

Ulf-G. Meißner

2014-10-11T23:59:59.000Z

452

Physics 141 & Physics 153 Laboratory Schedule -Physics 141 & 153 -Spring 2008  

E-Print Network [OSTI]

Physics 141 & Physics 153 i Laboratory Schedule - Physics 141 & 153 - Spring 2008 Monday Tuesday ­ No Labs! #12;Physics 141 & Physics 153 ii Lab Instructor Information Name: Office: Phone: Email: Mailbox: · Write your lab instructor's name on it · Give it to Theresa Sis, Main Physics Office, 116 Brace Lab

Farritor, Shane

453

Morphological Investigations of Fibrogenic Action of Estonian Oil Shale Dust  

E-Print Network [OSTI]

A review of morphological investigations carried out to clarify the pathogenicity of industrial dust produced in the mining and processing of Estonian oil shale is given. Histological examination of lungs of workers in the oil shale industry taken at necropsies showed that the inhalation of oil

V. A. Kung

454

USING OPTICAL COHERENCE TOMOGRAPHY TO EXAMINE THE SUBSURFACE MORPHOLOGY OF  

E-Print Network [OSTI]

: (1) a homogeneous glassy phase; (2) a liquid­liquid phase separated state; and (3) a crystallizedUSING OPTICAL COHERENCE TOMOGRAPHY TO EXAMINE THE SUBSURFACE MORPHOLOGY OF CHINESE GLAZES M of their glazes. The images revealed unique phase assemblage modes in different samples. The results suggest

Barton, Jennifer K.

455

Theoretical Foundations of Spatially-Variant Mathematical Morphology Part II  

E-Print Network [OSTI]

to represent a function by a set or an equivalent class of sets: the umbra approach and the threshold sets approach. The umbra approach, which was introduced by Sternberg [3], relies on the fact that the points the umbra approach has a nice geometrical interpretation of the morphological gray- level operations

Schonfeld, Dan

456

The early history of tomato fruit morphology characteristics  

E-Print Network [OSTI]

The early history of tomato fruit morphology characteristics Summary by Nic Welty Tomato originated and named a cultivar pomi'd oro (golden apple) (11). The first fruit shape was described as being "flattened) documented the red faciated tomato. He illustrated the tomato plant and fruit in detail, and also noted

van der Knaap, Esther

457

Multivariate Mathematical Morphology applied to Color Image Analysis  

E-Print Network [OSTI]

Chapter 10 Multivariate Mathematical Morphology applied to Color Image Analysis 10.1. Introduction analysis framework, currently fully developed for both binary and gray-level images. Its popularity in the image processing community is mainly due to its rigorous mathematical foundation as well as its inherent

Lefèvre, Sébastien

458

Morphology and dynamics of explosive vents through cohesive rock formations  

E-Print Network [OSTI]

to test the effects of these parameters. The experiments were used to test the effect of 2 on vent simulations were used to test the effect of 3 on vent morphology and dynamics. In the numerical models we see to underground explosions that blast the overlaying rock formations [e.g., Gisler, 2009]. This phenomenon occurs

Galland, Olivier

459

Unraveling the Role of Morphology on Organic Solar Cell Performance  

E-Print Network [OSTI]

Polymer based organic photovoltaic (OPV) technology offers a relatively inexpensive option for solar energy conversion provided its efficiency increases beyond the current level (6-7%) along with significant improvements in operational lifetime. The critical aspect of such solar cells is the complex morphology of distributed bulk heterojunctions, which plays the central role in the conversion of photo-generated excitons to electron-hole pairs. However, the fabrication conditions that can produce the optimal morphology are still unknown due to the lack of quantitative understanding of the effects of process variables on the cell morphology. In this article, we develop a unique process-device co-simulation framework based on phase-field model for phase separation coupled with self-consistent drift-diffusion transport to quantitatively explore the effects of the process conditions (e.g., annealing temperature, mixing ratio, anneal duration) on the organic solar cell performance. Our results explain experimentally observed trends of open circuit voltage and short circuit current that would otherwise be deemed anomalous from the perspective of conventional solar cells. In addition to providing an optimization framework for OPV technology, our morphology-aware modeling approach is ideally suited for a wide class of problems involving porous materials, block co-polymers, polymer colloids, OLED devices etc.

Biswajit Ray; Pradeep R. Nair; Muhammad A. Alam

2010-11-03T23:59:59.000Z

460

Water content and morphology of sodium chloride aerosol particles  

E-Print Network [OSTI]

to explain the H2O content. The model in which the NaCl particles contain pockets of aqueous NaCl solution was found to be most consistent with the spectroscopic observations. The relevance of salt particle morphology and water content to atmospheric aerosol...

Weis, David D.; Ewing, George E.

1999-09-20T23:59:59.000Z

Note: This page contains sample records for the topic "morphology physical properties" 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

PHYSICAL PLANT POLICY & PROCEDURE  

E-Print Network [OSTI]

PHYSICAL PLANT POLICY & PROCEDURE TITLE PHYSICAL PLANT HIGH VOLTAGE PREVENTIVE MAINTENANCE OBJECTIVE AND PURPOSE To establish a consistent policy of performing Preventive Maintenance on high voltage by the G.S.A. Preventive Maintenance sections E- 29 (high voltage oil circuit breaker), E-32 (high voltage

Fernandez, Eduardo

462

Noncommutative Two Time Physics  

E-Print Network [OSTI]

We present a classical formalism describing two-time physics with Abelian canonical gauge field backgrounds. The formalism can be used as a starting point for the construction of an interacting quantized two-time physics theory in a noncommutative soace-time.

W. Chagas-Filho

2006-04-03T23:59:59.000Z

463

Physics at TESLA  

E-Print Network [OSTI]

The physics at a 500-800 GeV electron positron linear collider, TESLA, is reviewed. The machine parameters that impact directly on the physics are discussed and a few key performance goals for a detector at TESLA are given. Emphasis is placed on precision measurements in the Higgs and top sectors and on extrapolation to high energy scales in the supersymmetric scenario.

Grahame A. Blair

2001-04-25T23:59:59.000Z

464

Physical Properties of Ambient and Laboratory-Generated Secondary...  

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

substrate. Because they flatten less upon impaction, particles with higher viscosity and surface tension can be identified by a steeper slope on a plot of TCA vs. size. The slopes...

465

MEASUREMENTS OF BLACK CARBON PARTICLES' CHEMICAL, PHYSICAL, AND OPTICAL PROPERTIES  

E-Print Network [OSTI]

., Billerica, MA; 2 Boston College, Chestnut Hill, MA; 3 NOAA CIRES, Boulder, CO; 4 UC Davis, Davis, CA; 5 of Brookhaven Science Associates, LLC under Contract No. DE-AC02- 98CH10886 with the U.S. Department of Energy

466

Physical properties of soils contaminated by oil lakes, Kuwait  

SciTech Connect (OSTI)

In preparation for a marine assault by the coalition forces, the Iraqi Army heavily mined Kuwait`s coastal zone and the oil fields. Over a million mines were placed on the Kuwait soil. Burning of 732 oil wells in the State of Kuwait due to the Iraqi invasion caused damages which had direct and indirect effect on environment. A total of 20-22 million barrels of spilled crude oil were collected in natural desert depressions and drainage network which formed more than 300 oil lakes. The total area covered with oil reached 49 km{sup 2}. More than 375 trenches revealed the existence of hard, massive caliche (CaCO{sub 3}) subsoil which prevent leached oil from reaching deeper horizons, and limited the maximum depth of penetration to 1.75 m. Total volume of soil contaminated reached 22,652,500 m{sup 3} is still causing environmental problems and needs an urgent cleaning and rehabilitation. Kuwait Oil Company has recovered approximately 21 million barrels from the oil lakes since the liberation of Kuwait. In our examined representative soil profiles the oil penetration was not deeper than 45 cm. Infiltration rate, soil permeability, grain size distribution, aggregates formation and water holding capacity were assessed. 15 refs., 5 figs., 5 tabs.

Mohammad, A.S. [Kuwait Univ., Safat (Kuwait); Wahba, S.A.; Al-Khatieb, S.O. [Arabian Gulf Univ. (Bahrain)

1996-08-01T23:59:59.000Z

467

Chemical and physical properties of emissions from Kuwait oil fires  

SciTech Connect (OSTI)

After the Iraqi retreat from Kuwait in 1991, airborne sampling was conducted in the oil fire plumes near Kuwait City and ground-level samples were taken of the air within the city. For the airborne sampling, a versatile air pollution sampler was used to determine the SO(2), elemental concentrations, the aerosol mass loadings and SO4(2-) and NO3(1-) concentrations. Striking differences between the black and white plumes were associated with high concentrations of NaCl and CaCl(2) measured in the white plumes and large numbers of carbon chain agglomerates in the black plumes. For the ground-based measurements, an annular denuder system was used to determine levels of SO(2), SO4(2-), trace elements, and mass loadings. Certain pollutant levels rose in the city during inversion conditions, when winds were too weak to continue moving the combustion products directly to the Persian Gulf, and the increased levels of Pb and certain trace elements were comparable to those in other large urban areas in Europe.

Stevens, R.; Pinto, J.; Mamane, Y.; Ondov, J.; Abdulraheem, M.

1992-01-01T23:59:59.000Z

468

Introduction This project studies the physical properties of the  

E-Print Network [OSTI]

: Applications Accidental explosions in industry and transportation, e.g.: methane and coal dust explosions fuel and a fine dust) have been less studied. Hybrid mixtures studied are methane gas with fine (1 Flame: burning of a mixture of a dust cloud with a combustible gas, i.e. fine aluminum dust with methane

Barthelat, Francois

469

Introduction Measuring chemical and physical properties of natural water  

E-Print Network [OSTI]

metabolic gases such as methane as well as permanent gases. Data are delivered to a shore station via for which spatiotemporal variability is a key attribute (e.g., Coale et al. 1991). To be most useful

Entekhabi, Dara

470

Relationship between physical, chemical and processing properties of rice  

E-Print Network [OSTI]

gelatinization tempera- ture. Kihara and Kajikawa (27) noted that high temperatures during ripening gave a slower rate of alkal1 d1gestion of the endosperm which indicated a high gelatinization temperature range. Relation of elatinization tern erature to some...

Parial, Lucila Beatrice Calupitan

1968-01-01T23:59:59.000Z

471

Correlation between Fibroin Amino Acid Sequence and Physical Silk Properties*  

E-Print Network [OSTI]

moth (Ephe- stia kuehniella), and Indian meal moth (Plodia inter- punctella). The amino acid repeats

Â?urovec, Michal

472

Control of physical properties on solid surface via laser processing  

SciTech Connect (OSTI)

In a safety operation of a nuclear power plant, vapor conditions such as a droplet or liquid membrane toward a solid surface of a heat exchanger and reactor vessel is important. In the present study, focusing on the droplet, the wettability on solid surface and surface free energy of solid are evaluated. In addition, wettability on a metal plate fabricated by laser processing is also considered for the nuclear engineering application.

Yonemoto, Yukihiro; Nishimura, Akihiko [Applied Laser Technology Institute, Japan Atomic Energy Agency, 65-20 Kizaki, Tsuruga, Fukui (Japan)

2012-07-11T23:59:59.000Z

473

The effect of scaffold physical properties on endothelial cell function  

E-Print Network [OSTI]

Endothelial cells (EC) are ubiquitous - as vascular epithelial cells they line the inner surface of all vessels and are the contact surface with flowing blood. Macrovascular EC are the first line barrier between flowing ...

Murikipudi, Sylaja

2010-01-01T23:59:59.000Z

474

Physical properties of conventional explosives deduced from radio frequency emissions  

SciTech Connect (OSTI)

Los Alamos National Laboratory collected broadband radio frequency (RF) electric field change measurements from multiple detonations of high explosives (HE). Three types of HE were used: small cylinders of flake TNT, solid TNT, and PBX-9501. Low frequency signals (<80 MHz) were shot-to-shot repeatable and occurred within the first 100 {mu} s at measured amplitudes of about 2 V m{sup -1} at 35 m distance. High frequency signals (>290 MHz) occurred later, were an order of magnitude lower in signal strength, and were not repeatable. There is a positive correlation between the maximum electric field change and the shock velocity of the HE. The amount of free charge produced in the explosion estimated from the first RF pulse is between 10 and 150 {mu} C. This implies a weakly ionized plasma with temperatures between 2600 and 2900 K.

Harlin, Jeremiah D [Los Alamos National Laboratory; Nemzek, Robert [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

475

anomalous physical properties: Topics by E-print Network  

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

- Experiment (arXiv) Summary: The initial data on the production and decay of the Higgs boson reported significant deviations from the Standard Model (SM) expectations,...

476

Seminar 1. letnik, II stopnja SUPERNOVAE: PHYSICAL AND OBSERVATIONAL PROPERTIES  

E-Print Network [OSTI]

.1.2 Hubble's law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1.3 Friedmann and explosive nucleosynthesis, radioactive decays and shocks with circumstellar matter [1]. The nuclear- sequence stars, burning hydrogen into helium in their cores via the two main nuclear reaction chains: p

Â?umer, Slobodan

477

OPTICAL AND PHYSICAL PROPERTIES OF CERAMIC CRYSTAL LASER MATERIALS.  

E-Print Network [OSTI]

??Historically ceramic crystal laser material has had disadvantages compared to single crystal laser material. However, progress has been made in the last decade and a… (more)

Simmons, Jed

2007-01-01T23:59:59.000Z

478

The determination of lithology from core physical properties measurements  

E-Print Network [OSTI]

that these experiments are noninvasive also allows for further post-cruise studies. For the study I chose Leg 162 (July-September 1995 in the North Atlantic) for the density of data, the experiments performed, the quantity and quality of post-cruise publications...

Clark, Paula Ann

2006-08-16T23:59:59.000Z

479

Hanford Waste Physical and Rheological Properties: Data and Gaps  

SciTech Connect (OSTI)

The Hanford Site in Washington State manages 177 underground storage tanks containing approximately 250,000 m3 of waste generated during past defense reprocessing and waste management operations. These tanks contain a mixture of sludge, saltcake and supernatant liquids. The insoluble sludge fraction of the waste consists of metal oxides and hydroxides and contains the bulk of many radionuclides such as the transuranic components and 90Sr. The saltcake, generated by extensive evaporation of aqueous solutions, consists primarily of dried sodium salts. The supernates consist of concentrated (5-15 M) aqueous solutions of sodium and potassium salts. The 177 storage tanks include 149 single-shell tanks (SSTs) and 28 double -hell tanks (DSTs). Ultimately the wastes need to be retrieved from the tanks for treatment and disposal. The SSTs contain minimal amounts of liquid wastes, and the Tank Operations Contractor is continuing a program of moving solid wastes from SSTs to interim storage in the DSTs. The Hanford DST system provides the staging location for waste feed delivery to the Department of Energy (DOE) Office of River Protection’s (ORP) Hanford Tank Waste Treatment and Immobilization Plant (WTP). The WTP is being designed and constructed to pretreat and then vitrify a large portion of the wastes in Hanford’s 177 underground waste storage tanks.

Wells, Beric E.; Kurath, Dean E.; Mahoney, Lenna A.; Onishi, Yasuo; Huckaby, James L.; Cooley, Scott K.; Burns, Carolyn A.; Buck, Edgar C.; Tingey, Joel M.; Daniel, Richard C.; Anderson, K. K.

2011-08-01T23:59:59.000Z

480

Chemical, mineralogical and physical properties of the San Saba Clay  

E-Print Network [OSTI]

? San Saba an4 Victoria Clay s 1 ST SOS UCT I OS Ssseawh 4oslgsed to stagy ihe basks pwperikes of ihe sells of ihe Oread Prakrle ef oeniral Tense ls generally Laehkng Consegaontly, there ls lktile soil data aeaklablo fer reselvkng ~ageaesi as4 fer..., Slash are deeply appreelaisd, Maap ihashs also are das io Xa ~ Earrep Qehos~ Senior Corrolaior~ Sell Cessor@a ilos Serrfoo~ sho located ihe ssapllsS elise asd also edNed iho profile de earl pilose. TABLE (~ QOSTXSTS ISTBDDUGTIES Li TXS4TUDZ BKV IX...

Nelson, Larry Alan

1958-01-01T23:59:59.000Z

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481

PHYSICAL AND CHEMICAL PROPERTIES OF COMBUSTION GENERATED SOOT  

E-Print Network [OSTI]

flame temperature (OK) Tad == adiabatic flame temperature (per cm of fuel, becomes Tad T M c dT p Q is the equivalenceValues of M, c p ' and Tad were taken from the equilibrium

Toossi, Reza

2010-01-01T23:59:59.000Z

482

In-situ physical properties measurements using crosswell acoustic data  

SciTech Connect (OSTI)

Crosswell acoustic surveys enable the in-situ measurements of elastic moduli, Poisson's ratio, porosity, and apparent seismic Q of gas-bearing low-permeability formations represented at the Department of Energy Multi-Well Experiment (MWX) site near Rifle, Colorado. These measurements, except for Q, are compared with laboratory measurements on core taken from the same depths at which the crosswell measurements are made. Seismic Q determined in situ is compared to average values for sandstone. Porosity was determined from crosswell data using the empirical relationship between acoustic velocity, porosity, and effective pressure developed by Domenico. Domenico, S.N., ''Rock Lithology and Porosity Determination from Shear and compressional Wave Velocity,'' Geophysics, Vol. 49, No. 9, Aug. 1984, pp. 1188-1195. In-situ porosities are significantly greater than the core-derived values. Sources of the discrepancy may arise from (i) the underestimation of porosity that can result when Boyle's Law measurements are made on low-permeability core and (ii) the application of Dominico's relationship, which is developed for clean sands, to the mixed sandstone and shale lithologies represented at the MWX site. Values for Young's modulus and Poisson's ratio derived from crosswell measurements are comparable to values obtained from core. Apparent seismic Q measured in situ between wells is lower than Q measured on core and clearly shows the heterogeneity of sandstone deposited in a fluvial environment. 16 refs., 4 figs., 2 tabs.

Johnson, P.A.; Albright, J.N.

1985-01-01T23:59:59.000Z

483

Physics 681 Lecture 1 I. General Properties of the  

E-Print Network [OSTI]

energy output per unit time. Solar Constant 2 4 A L S #12;7 Solar Maximum Mission found: WL mWS 26 2 · heliosphere Sunspots Image: SOHO/MDI #12;3 Sun in UV (304 Å) ­ SOHO/EIT 8/20/1999 Satellite data used temperature means sampling higher in the solar atmosphere #12;5 Sun's Magnetic Field ­ KPNO 8

484

COLLOQUIUM: Exploring the Physical Properties of Matter in Extreme  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6Energy, science, andAnalysis15InformationLab

485

Physical Properties of Ambient and Laboratory-Generated Secondary Organic  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006Photovoltaic Theory and Modeling Los AlamosAerosol. | EMSL

486

Physical properties of seafloor sediments from the Russian Pechora Sea  

E-Print Network [OSTI]

of Boulder Clay deposits within the study area, solving the long controversy regarding the marine or glacial origin for these late Pleistocene deposits in the Pechora area. An evaluation of the influence of the Novaya Zemlya and Scandinavian ice masses...

Sarmiento, Sergio Eduardo

1996-01-01T23:59:59.000Z

487

An investigation of aerosol physical properties in Houston, Texas  

E-Print Network [OSTI]

From June through October 2001, three Tandem Differential Mobility Analyzer (TDMA) systems were operated around Houston, Texas, to obtain a large, high-quality dataset in order to explore characteristics of aerosol size distributions...

Gasparini, Roberto

2002-01-01T23:59:59.000Z

488

Optical, physical, and chemical properties of springtime aerosol over  

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

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489

Gamma Radiation Effects on Physical, Optical, and Structural Properties of  

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 with Big Sky Learning Fun with Big SkyDIII-DRMRGamma Radiation and X-Rays

490

Property:Special Physical Features | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: EnergyPotentialUrbanUtilityScalePVCapacity Jump to: navigation,WebsiteRenewableBiofuel JumpSimulated

491

Correlations Between Optical, Chemical and Physical Properties of Biomass  

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 Newcatalyst phases on &gamma;-Al2O3. |ID#: 19834 Title: Correlation ofBurn

492

PHYSICAL AND CHEMICAL PROPERTIES OF COMBUSTION GENERATED SOOT  

E-Print Network [OSTI]

of Aerosols Produced by a Propane-Air Flame in a Controlledflat flame burner for propane/air mixture Schematic diagramdistribution across a flame of propane/air mixture. Opera

Toossi, Reza

2010-01-01T23:59:59.000Z

493

Transport and magnetic properties of rtx and related  

E-Print Network [OSTI]

Physical properties of RTX compounds (R = Rare earth, T = Transition metal and X = main group element from B, C or N group) compounds have been studied by means of electrical resistivity, heat capacity, dc magnetization and NMR. Searching for new...

Goruganti, Venkat

2009-05-15T23:59:59.000Z

494

Mechanical Properties of Glassy Polyethylene Nanofibers via Molecular Dynamics Simulations  

E-Print Network [OSTI]

The extent to which the intrinsic mechanical properties of polymer fibers depend on physical size has been a matter of dispute that is relevant to most nanofiber applications. Here, we report the elastic and plastic ...

Buell, Sezen

495

Ordered arrays of nanocrystals : synthesis, properties and applications  

E-Print Network [OSTI]

Nanoscale materials, including nanocrystals and carbon nanotubes, exhibit an appealing array of physical properties, and provide an interesting prospect for research both from a fundamental as well as a technological ...

Bhaviripudi, Sreekar

2007-01-01T23:59:59.000Z

496

Processing and thermal properties of molecularly oriented polymers  

E-Print Network [OSTI]

High molecular weight polymers that are linear in molecular construction can be oriented such that some of their physical properties in the oriented direction are enhanced. For over 50 years polymer orientation and processing ...

Skow, Erik (Erik Dean)

2007-01-01T23:59:59.000Z

497

M.S. Physics Program M.S. in Physics  

E-Print Network [OSTI]

M.S. Physics Program M.S. in Physics Department(s) Physics and Astronomy College Sciences 1 for later reference. 1. understanding of a variety of fields of physics at the graduate level 2. performance of a physics research project suitable for a masters thesis 3. ability to communicate scientific research

Hemmers, Oliver

498

Morphology and non-isothermal crystallization kinetics of CuInS{sub 2} nanocrystals synthesized by solvo-thermal method  

SciTech Connect (OSTI)

Nanocrystals of copper indium disulphide (CuInS{sub 2}) were synthesized by a solvo-thermal method. The structure, morphology and non-isothermal crystallization kinetic behavior of samples were investigated using X-ray diffraction, field emission scanning electron microscopy, field emission transmission electron microscopy, thermogravimetric analysis and differential thermal analysis techniques. Non-isothermal measurements at different heating rates were carried out and the crystallization kinetics of samples were analyzed using the most reliable non-isothermal kinetic methods. The kinetic parameters such as glass transition temperature, thermal stability, activation energy, Avrami exponent etc. were evaluated. - Highlights: Black-Right-Pointing-Pointer CuInS{sub 2} nanocrystals have scientific and technological importance. Black-Right-Pointing-Pointer Samples have been prepared by solvo-thermal method. Black-Right-Pointing-Pointer Synthesized samples exhibit excellent morphology and thermal properties. Black-Right-Pointing-Pointer Investigated properties may be utilized in design and fabrication of solar cell devices.

Majeed Khan, M.A., E-mail: majeed_phys@yahoo.co.in [King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451 (Saudi Arabia); Kumar, Sushil [Department of Physics, Chaudhary Devi Lal University, Sirsa 125055 (India); Alsalhi, M.S. [King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451 (Saudi Arabia); Department of Physics and Astronomy, King Saud University, Riyadh 11451 (Saudi Arabia); Ahamed, Maqusood [King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451 (Saudi Arabia); Alhoshan, Mansour [King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451 (Saudi Arabia); Chemical Engineering Department, King Saud University, Riyadh 11451 (Saudi Arabia); Alrokayan, Salman A. [King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451 (Saudi Arabia); Ahamad, Tansir [Department of Chemistry, King Saud University, Riyadh 11451 (Saudi Arabia)

2012-03-15T23:59:59.000Z