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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

MDF dust/PP composites reinforced with nanoclay: Morphology, long-term physical properties and withdrawal strength of fasteners in dry and saturated conditions  

Science Journals Connector (OSTI)

Abstract In this study, effect of nanoclay loading (0%, 2%, 4% and 6%) on long-term physical properties and withdrawal strength of fasteners before and after saturation of polypropylene/MDF dust composites was investigated. Sanding dust of medium density fiberboard (MDF) was used as lignocellulose material and polypropylene as the thermoplastic material. The results showed that long-term water absorption (WA) and thickness swelling (TS) was found to decrease as the nanoclay loading increased. Also, WA and TS both were increased with increasing MDF dust content. Maximum withdrawal strengths of fasteners (screws and nails) were obtained in the samples reinforced with 2% weight percentages nanoclay. Withdrawal strengths of fasteners in saturated state toward unsaturated state were decreased. In fact, exposure to water for long term was resulted in significant reduction in withdrawal strengths of fasteners due to the degradation of the fiber/matrix interface. The morphological analysis of woodplastic composite (WPC) samples was carried out by field emission scanning electron microscopy (FE-SEM) to study the fiber/matrix adhesion interactions. X-ray diffraction (XRD) showed the formation of intercalated nanostructure.

Arash Chavooshi; Mehrab Madhoushi; Mohammad Navi; Mohammad Yousef Abareshi

2014-01-01T23:59:59.000Z

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

Effects of internal mixing and aggregate morphology on optical properties  

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

Effects of internal mixing and aggregate morphology on optical properties Effects of internal mixing and aggregate morphology on optical properties of black carbon using a discrete dipole approximation model Title Effects of internal mixing and aggregate morphology on optical properties of black carbon using a discrete dipole approximation model Publication Type Journal Article Year of Publication 2013 Authors Scarnato, B., S. Vahidinia, D. T. Richard, and Thomas W. Kirchstetter Journal Atmospheric Chemistry and Physics Volume 12 Pagination 26401-26434 Abstract According to recent studies, internal mixing of black carbon (BC) with other aerosol materials in the atmosphere alters its aggregate shape, absorption of solar radiation, and radiative forcing. These mixing state effects are not yet fully understood. In this study, we characterize the morphology and mixing state of bare BC and BC internally mixed with sodium chloride (NaCl) using electron microscopy and examine the sensitivity of optical properties to BC mixing state and aggregate morphology using a discrete dipole approximation model (DDSCAT). DDSCAT predicts a higher mass absorption coefficient, lower single scattering albedo (SSA), and higher absorption Angstrom exponent (AAE) for bare BC aggregates that are lacy rather than compact. Predicted values of SSA at 550 nm range between 0.18 and 0.27 for lacy and compact aggregates, respectively, in agreement with reported experimental values of 0.25 ± 0.05. The variation in absorption with wavelength does not adhere precisely to a power law relationship over the 200 to 1000 nm range. Consequently, AAE values depend on the wavelength region over which they are computed. In the 300 to 550 nm range, AAE values ranged in this study from 0.70 for compact to 0.95 for lacy aggregates. The SSA of BC internally mixed with NaCl (100-300 nm in radius) is higher than for bare BC and increases with the embedding in the NaCl. Internally mixed BC SSA values decrease in the 200-400 nm wavelength range, a feature also common to the optical properties of dust and organics. Linear polarization features are also predicted in DDSCAT and are dependent on particle morphology. The bare BC (with a radius of 80 nm) presents in the linear polarization a bell shape feature, which is a characteristic of the Rayleigh regime (for particles smaller than the wavelength of incident radiation). When BC is internally mixed with NaCl (100-300 nm in radius), strong depolarization features for near-VIS incident radiation are evident, such as a decrease in the intensity and multiple modes at different angles corresponding to different mixing states.

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

Physical Properties of Ionic Liquids  

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

Physical Properties of Ionic Liquids Consisting of the Physical Properties of Ionic Liquids Consisting of the 1-Butyl-3-Methylimidazolium Cation with Various Anions and the Bis(trifluoromethylsulfonyl)imide Anion with Various Cations Hui Jin, Bernie O'Hare, Jing Dong, Sergei Arzhantsev, Gary A. Baker, James F. Wishart, Alan J. Benesi, and Mark Maroncelli J. Phys. Chem. B 112, 81-92 (2008). [Find paper at ACS Publications] Abstract: Physical properties of 4 room-temperature ionic liquids consisting of the 1-butyl-3-methylimidazolium cation with various perfluorinated anions and the bis(trifluoromethylsulfonyl)imide (Tf2N-) anion with 12 pyrrolidinium-, ammonium-, and hydroxyl-containing cations are reported. Electronic structure methods are used to calculate properties related to the size, shape, and dipole moment of individual ions. Experimental measurements of

8

Effects of internal mixing and aggregate morphology on optical properties  

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

3 3 Authors Scarnato, Barbara V., Sanaz Vahidinia, D. T. Richard, and Thomas W. Kirchstetter Journal Atmospheric Chemistry and Physics Volume 13 Start Page 5089 Issue 10 Pagination 5089 - 5101 Date Published 05/2013 Abstract According to recent studies, internal mixing of black carbon (BC) with other aerosol materials in the atmosphere alters its aggregate shape, absorption of solar radiation, and radiative forcing. These mixing state effects are not yet fully understood. In this study, we characterize the morphology and mixing state of bare BC and BC internally mixed with sodium chloride (NaCl) using electron microscopy and examine the sensitivity of optical properties to BC mixing state and aggregate morphology using a discrete dipole approximation model (DDSCAT). DDSCAT is flexible in simulating the geometry and refractive index of particle aggregates. DDSCAT predicts a higher mass absorption coefficient (MAC), lower single scattering albedo (SSA), and higher absorption Angstrom exponent (AAE) for bare BC aggregates that are lacy rather than compact. Predicted values of SSA at 550 nm range between 0.16 and 0.27 for lacy and compact aggregates, respectively, in agreement with reported experimental values of 0.25 ± 0.05. The variation in absorption with wavelength does not adhere precisely to a power law relationship over the 200 to 1000 nm range. Consequently, AAE values depend on the wavelength region over which they are computed. The MAC of BC (averaged over the 200-1000 nm range) is amplified when internally mixed with NaCl (100-300 nm in radius) by factors ranging from 1.0 for lacy BC aggregates partially immersed in NaCl to 2.2 for compact BC aggregates fully immersed in NaCl. The SSA of BC internally mixed with NaCl is higher than for bare BC and increases with the embedding in the NaCl. Internally mixed BC SSA values decrease in the 200-400 nm wavelength range, a feature also common to the optical properties of dust and organics. Linear polarization features are also predicted in DDSCAT and are dependent on particle size and morphology.

9

Correlations Between Optical, Chemical and Physical Properties...  

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

Biomass Burn Aerosols. Correlations Between Optical, Chemical and Physical Properties of Biomass Burn Aerosols. Abstract: Single scattering albedo (?) and Angstrom...

10

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.

11

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...

12

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...

13

The effect of In doping on some physical properties of CdS films  

Science Journals Connector (OSTI)

CdS and CdS:In films (at the In percentages of 25, 35 and 45) were deposited onto glass substrates at the substrate temperature of 3005C by ultrasonic spray pyrolysis technique and the effect of In concentration on some physical properties of the films were presented. The deposited films were characterized for their electrical, structural, morphological and elemental properties using currentvoltage measurements, X-ray diffraction patterns, scanning electron microscopy micrographs and energy dispersive X-ray spectroscopy analyses, respectively. It was determined from the results of these investigations that the electrical, structural, morphological and elemental properties of CdS films considerably changed with In doping and CdS:In films are more desirable than CdS for window layer applications in photovoltaic solar cells.

F. Atay; V. Bilgin; I. Akyuz; S. Kose

2003-01-01T23:59:59.000Z

14

Electronic properties and morphology of Cu-phthalocyanineC{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, Notkestrae 85, D-22607 Hamburg (Germany); Lupulescu, Cosmin [Institute of Optics and Atomic Physics, TU Berlin, Strae des 17. Juni 135, D-10623 Berlin (Germany); Arion, Tiberiu [Center for Free-Electron Laser Science/DESY, Notkestrae 85, D-22607 Hamburg (Germany); Institut fr Experimentalphysik, Universitt Hamburg, Luruper Chaussee 149, D-22761 Hamburg (Germany); Darlatt, Erik; Gottwald, Alexander [Physikalisch-Technische Bundesanstalt (PTB), Abbestrae 2-12, D-10587 Berlin (Germany); Eberhardt, Wolfgang [Center for Free-Electron Laser Science/DESY, Notkestrae 85, D-22607 Hamburg (Germany); Institute of Optics and Atomic Physics, TU Berlin, Strae des 17. Juni 135, D-10623 Berlin (Germany)

2014-01-21T23:59:59.000Z

15

Structural and morphological properties of sputtered NiO thin films at various sputtering pressures  

SciTech Connect (OSTI)

Nickel oxide thin films were successfully deposited on glass substrates at different sputtering pressures in the range of 3 x 10{sup -2} to 5 x 10{sup -2} mbar. It was observed that sputtering pressure influenced the structural and morphological properties. Structural properties were studied with X-ray diffractometer. All the deposited films were polycrystalline and exhibited cubic structure with preferential growth along (220) plane. From morphological studies it was observed that fine and uniform grains with RMS roughness of 9.4 nm were obtained when the films deposited at a sputtering pressure of 4 x 10{sup -2} mbar,. The grain size and the surface roughness decreased at higher sputtering pressures. The surface mobility of the adatoms decreased after series of collisions resulting in the decrease of grain size at high sputtering pressures.

Reddy, A. Mallikarjuna; Reddy, Y. Ashok Kumar; Reddy, A. Sivasankar; Reddy, P. Sreedhara [Department of Physics, Sri Venkateswara University, Tirupathi-517502, Andhra Pradesh (India); Division of Advanced Materials Engineering, Kongju National University, Budaedong, Cheonan City (Korea, Republic of); Department of Physics, Sri Venkateswara University, Tirupathi-517502, Andhra Pradesh (India)

2012-06-05T23:59:59.000Z

16

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, UVvis 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 Matire Divise, Institut de Physique, site de Chartres, Universit dOrlans (France)

2013-11-15T23:59:59.000Z

17

Effect of crude palm oil as plasticiser on the mechanical and morphology properties of low density polyethylene blown film  

Science Journals Connector (OSTI)

This paper presents a study on the mechanical and morphology properties of low density polyethylene (LDPE) blown film modified with crude palm oil (CPO). The effect of the crude palm oil as plasticiser on LDPE matrix has been studied. The LDPE were compounded with 1%, 3% and 5% of crude palm oil in a co-rotating twin screw extruder and pelletised. The blends were processed using blow thin film machine. The results on tensile properties were showed the gradual enhanced the elongation at break about 79% to 90% in machine direction (MD) and transverse direction (TD) and gradually decreased the tensile strength about 9%. The rupture properties of LDPE modified with CPO showed the decrement pattern due to the plastisticisation effect. The fracture mechanism of modified LDPE was also investigated from scanning electron microscope micrographs which clearly indicated the orientation strengthening consistently with the result in mechanical properties. From Fourier transmission infra-red (FTIR) spectras, the presence of CPO showed the addition peak in 1,745 to 1,747 cm?1 region indicated the physical interaction between molecular of polyolefins and CPO. These observations have important implication as an alternative environmental friendly plasticiser based from renewable resources for polymeric materials.

Emiliana Rose Jusoh; Mohd Halim Shah Ismail; Luqman Chuah Abdullah; Robiah Yunus; Wan Aizan Wan Abdul Rahman

2013-01-01T23:59:59.000Z

18

Physical properties of seafloor sediments from the Russian Pechora Sea  

E-Print Network [OSTI]

This study is the first of its kind in the English language that characterizes and quantifies the physical, acoustical, and geotechnical properties of the surficial marine sediments in the Pechora Sea. Profiles of bulk density, porosity, velocity...

Sarmiento, Sergio Eduardo

2012-06-07T23:59:59.000Z

19

Chapter 9 - Chemical and Physical Properties of Hydrocarbons  

Science Journals Connector (OSTI)

Publisher Summary Hydrocarbons are the simplest organic compounds and contain only carbon and hydrogen but they can be straight chain or branched chain with the same empirical formula but showing differences in properties. Chemical change results in the hydrocarbon yielding a product that may be entirely different in composition to the starting hydrocarbonthe exception is the isomerization reaction where a straight-chain hydrocarbon is converted to a branched-chain hydrocarbon. Chemical properties of hydrocarbons describe the potential of hydrocarbons to undergo chemical change or reaction by virtue of the hydrocarbon structure. Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. Physical properties that are of interest in the current context include: boiling point, melting point, density, vapor density, flash point, ignition temperature, and dew point.

James G. Speight

2011-01-01T23:59:59.000Z

20

Examples of Tensor Properties Using Matrix Fundamentals (A Physical Property)  

Science Journals Connector (OSTI)

Properties of single crystals in particular often differ with different crystal directions as a consequence of constraints imposed by atomic packing and arrangements as well as the placement of substitutional ...

2014-08-01T23:59:59.000Z

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.


21

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 UVVis absorption spectroscopy. The UVVis 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

22

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, 23 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

23

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

24

Effects of Structural Modification on Ionic Liquid Physical Properties  

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

Effect of Structural Modification on the Physical Properties Effect of Structural Modification on the Physical Properties of Various Ionic Liquids S. I. Lall-Ramnarine, J. L. Hatcher, A. Castano, M. F. Thomas, and J. F. Wishart in "ECS Transactions - Las Vegas, NV, Vol. 33, Molten Salts and Ionic Liquids 17" D. Fox et al., Eds.; The Electrochemical Society, Pennington, NJ, (2010) pp 659 - 665. [Find paper at ECS] Abstract: A few classes of ionic liquids were synthesized and investigated for their physical properties as a function of structural variation. Bis(oxalato)borate (BOB) and bis(trifluoromethylsulfonyl)imide (NTf2) ionic liquids (ILs) containing pyridinium, 4-dimethylaminopyridinium (DMAP) and pyrrolidinium cations bearing alkyl, benzyl, hydroxyalkyl and alkoxy substituents, were prepared from the corresponding halide salts. The

25

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

26

Property:Special Physical Features | Open Energy Information  

Open Energy Info (EERE)

Physical Features Physical Features Jump to: navigation, search Property Name Special Physical Features Property Type Text Pages using the property "Special Physical Features" Showing 25 pages using this property. (previous 25) (next 25) C Carderock 2-ft Variable Pressure Cavitation Water Tunnel + The 2-Foot Variable Pressure Cavitation Water Tunnel is a vertical plane, closed recirculating, variable-speed, variable-pressure, open jet test section, closed jet test section, and semi-rectangular test section. Carderock 3-ft Variable Pressure Cavitation Water Tunnel + The 3-ft Variable Pressure Cavitation Water Tunnel is a vertical plane, closed recirculating with resorber, variable-speed, variable-pressure, two interchangeable circular test sections. Carderock Circulating Water Channel + The Circulating Water Channel is a vertical plane, open to the atmosphere test section with a free surface in a closed recirculating water circuit, variable speed, rectangular cross-sectional shape facility. There are 10 large viewing windows on either side of the test section at different elevations and 9 in the bottom; movable bridge spans the test section for ease and versatility in mounting models, rigging bridge is capable of taking towing loads at any one of numerous points up to 35,584 N

27

Structural, Morphological and Optical properties of Sputtered Nickel oxide Thin Films  

SciTech Connect (OSTI)

Nickel oxide (NiO) thin films have been deposited by dc reactive magnetron sputtering technique on glass substrates at various substrate temperatures in the range of 303 to 723 K. The influence of substrate temperature on structural, morphological, compositional and optical properties was analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive spectroscopy (EDS) and spectrophotometer studies. The structural properties of the films were strongly influenced by the substrate temperature. From the microstructural studies, fine and uniform grains were grown with RMS roughness of 9.4 nm at substrate temperature of 523 K. The optical results indicated that the optical transmittance of the films increases with increasing substrate temperature up to 523 K, thereafter decreases. The optical band of the films increases with substrate temperature initially, thereafter decreased at higher temperatures. The Highest optical transmittance of 60 % and optical band gap of 3.82 eV was observed in the present study.

Reddy, A. Mallikarjuna; Reddy, A. Sivasankar; Reddy, P. Sreedhara [Department of Physics, Sri Venkateswara University, Tirupati-517 502 (India)

2011-10-20T23:59:59.000Z

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

Effect of the growth rate on the morphology and structural properties of hut-shaped Ge  

Science Journals Connector (OSTI)

The effect of Ge deposition rate on the morphology and structural properties of self-assembled Ge/Si(001) islands was studied. Ge/Si(001) layers were grown by solid-source molecular-beam epitaxy at 500?C. We adjusted the Ge coverage, 6monolayers (ML), and varied the Ge growth rate by a factor of 100, R = 0.022MLs?1, to produce films consisting of hut-shaped Ge islands. The samples were characterized by scanning tunnelling microscopy, Raman spectroscopy, and Rutherford backscattering measurements. The mean lateral size of Ge nanoclusters decreases from 14.1nm at R = 0.02MLs?1 to 9.8nm at R = 2MLs?1. The normalized width of the size distribution shows non-monotonic behaviour as a function of R and has a minimum value of 19% at R = 2MLs?1. Ge nanoclusters fabricated at the highest deposition rate demonstrate the best structural quality and the highest Ge content (~0.9).

A I Yakimov; A I Nikiforov; A V Dvurechenskii; V V Ulyanov; V A Volodin; R Groetzschel

2006-01-01T23:59:59.000Z

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

Role of Nanoclay Shape and Surface Characteristics on the Morphology and Thermal Properties of Polystyrene Nanocomposites Synthesized via Emulsion Polymerization  

Science Journals Connector (OSTI)

Role of Nanoclay Shape and Surface Characteristics on the Morphology and Thermal Properties of Polystyrene Nanocomposites Synthesized via Emulsion Polymerization ... The improvement in the thermal stability of the polymers filled with nanoclay is attributed to the formation of a clay char that acts as a mass transport barrier and thermal insulator between the bulk polymer and the surface where the combustion occurs. ... This article reviews the literature reports based on polystyrene nanocomposites using nanoclay as filler. ...

Nagi Greesh; Suprakas Sinha Ray; Jayita Bandyopadhyay

2013-10-24T23:59:59.000Z

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

Morphological properties of pillared layered materials investigated by electron microscopy technique  

E-Print Network [OSTI]

Scanning electron microscopy was used to investigate morphological features of a diverse range of pillared layered materials. Pillared layered zirconium phosphates, zirconium polyimine phosphonates and anion exchanger derivatives, zinc...

Navas de Mascianglioli, Margarit

2012-06-07T23:59:59.000Z

34

Chapter 4 - Physical Properties of Hydrocarbons and Petrochemicals  

Science Journals Connector (OSTI)

Abstract A brief description of the most common hydrocarbons and chemicals used in the process industries is provided, starting from the simplest to the more complex. Additionally, several tables are provided that identify the molecular compositions and typical fire hazards (flash points, flammability limits, autoignition temperatures) of these common materials. The specific fire hazard terms are explained in further detail for better understanding of the risks involved with processing and handling of the materials. An autoignition temperature approximation method is also provided for use where a mixture of material may be present. Physical properties that may influence the severity of an incident from these materials are mentioned and described, which includes vapor density, vapor pressure, and specific gravity.

Dennis P. Nolan

2014-01-01T23:59:59.000Z

35

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

36

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

37

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

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

Physical properties of Li ion conducting polyphosphazene based polymer electrolytes  

SciTech Connect (OSTI)

We report a systematic study of the transport properties and the underlying physical chemistry of some polyphosphazene (PPhz)-based polymer electrolytes. We synthesized MEEP and variants which employed mixed combinations of different length oxyethylene side-chains. We compare the conductivity and ion-ion interactions in polymer electrolytes obtained with lithium triflate and lithium bis(trifluoromethanesulfonyl)imide (TFSI) salts added to the polymer. The combination of the lithium imide salt and MEEP yields a maximum conductivity of 8 x 10{sup -5} {Omega}{sup -1} cm{sup -1} at room temperature at a salt loading of 8 monomers per lithium. In one of the mixed side-chain variations, a maximum conductivity of 2 x 10{sup -4} {Omega}{sup -1} cm{sup -1} was measured at the same molar ratio. Raman spectral analysis shows some ion aggregation and some polymer - ion interactions in the PPhz-LiTFSI case but much less than observed with Li CF{sub 3}SO{sub 3}. A sharp increase in the Tg as salt is added corresponds to concentrations above which the conductivity significantly decreases and ion associations appear.

Sanderson, S.; Zawodzinski, T.; Hermes, R.; Davey, J.; Dai, Hongli

1996-12-31T23:59:59.000Z

40

Influence of implantation induced Ni-doping on structural, optical, and morphological properties of nanocrystalline CdS thin films  

Science Journals Connector (OSTI)

Ni-doped CdS thin films were prepared by 90keV Ni+ implantation at room temperature. Ni-ion implantation induced modifications in structural, optical, and morphological properties are studied for a wide range of impurity concentrations (1.8610.19at.%). Addition of Ni+ ions does not lead to any structural phase transformation or formation of metallic clusters or secondary phase precipitates. However, it induces structural disorder leading to a reduction in the optical band gap from 2.39 to 2.28eV following Ni implantation up to 3נ1016 ions cm?2. This is addressed on the basis of band tailing due to the creation of localized energy states and implantation induced grain growth. Moreover, Ni-doping is found to modify the luminescence properties by creating shallow acceptor states.

S. Chandramohan; T. Strache; S.N. Sarangi; R. Sathyamoorthy; T. Som

2010-01-01T23:59:59.000Z

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.


41

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

42

Physical-Property Measurements on Core Samples from Drill-Holes DB-1 and  

Open Energy Info (EERE)

Physical-Property Measurements on Core Samples from Drill-Holes DB-1 and 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 LibraryAdd to library Report: Physical-Property Measurements on Core Samples from Drill-Holes DB-1 and DB-2, Blue Mountain Geothermal Prospect, North-Central Nevada Abstract N/A Author U.S. Geological Survey Published Publisher Not Provided, 2009 Report Number 2009-1022 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Physical-Property Measurements on Core Samples from Drill-Holes DB-1 and DB-2, Blue Mountain Geothermal Prospect, North-Central Nevada Citation U.S. Geological Survey. 2009. Physical-Property Measurements on Core Samples from Drill-Holes DB-1 and DB-2, Blue Mountain Geothermal Prospect,

43

Interfacial morphology and friction properties of thin PEO and PEO/PAA blend films  

Science Journals Connector (OSTI)

The scanning force microscope (SFM) was used to investigate morphology of poly(ethylene oxide) (PEO) and poly(acrylic acid) (PAA) blend. The effect of solvent and dewetting in surface structure of PEO film was reported. The results manifested that the crystallization of PEO could be suppressed completely in ultrathin region via using chloroform as a solvent, and the branched-like crystallization was recovered after dewetting. Also, the effect of thickness, the ratio of PEO/PAA and dewetting in surface morphology of PEOPAA blend films were investigated. These results showed that the crystallization was highly dependent on the ratio of PEO/PAA and the thickness of blend film. Furthermore, we assembled the PEO/PAA layer-by-layer film by spin-casting method for the first time, which exhibited highly efficiency. As a complementary tool, we also used lateral force microscopy (LFM) to explore surface information of these films. The result was indicative of interfacial constraints in ultrathin region, and also was supported by the results showing the spin-casting PEO/PAA blends rather than heterogeneous mixture.

Xianke Gu; Guojian Wang

2011-01-01T23:59:59.000Z

44

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

45

Measuring physical and mechanical properties of individual carbon nanotubes by in situ TEM  

E-Print Network [OSTI]

, was observed only from defect-free carbon nanotubes grown by arc-discharge technique, while such an effect transmission electron microscopy to measure the electric, mechanical and field emission properties, the physical properties of nanomaterials could be quite diverse. The electric properties of carbon nanotubes

Wang, Zhong L.

46

Variability in morphology, hygroscopicity, and optical properties of soot aerosols during atmospheric processing  

Science Journals Connector (OSTI)

...12), or engine combustion (16...mass, we draw fundamental conclusions of atmospheric...particles from diesel combustion by using combined...Properties of jet engine combustion particles...of carbon and diesel soot particles...vehicle with a diesel oxidation catalyst . J...Boubel RW ( 1994 ) Fundamentals of Air Pollution...

Renyi Zhang; Alexei F. Khalizov; Joakim Pagels; Dan Zhang; Huaxin Xue; Peter H. McMurry

2008-01-01T23:59:59.000Z

47

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...

48

Microbiological and Physical Properties of Salt Marsh and Microecosystem Sediments  

Science Journals Connector (OSTI)

...MES. ATP in the high marsh was found to be significantly...sediment properties (r = 0.539, s = 0...sampled in the high marsh. r witha: Variable Ma...PROPERTIES OF SALT MARSH AND MES SEDIMENTS 667 9. Fallon, R. D., and F. K...

Michael Reichgott; L. Harold Stevenson

1978-11-01T23:59:59.000Z

49

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

50

A Review of the Properties of Nb3Sn and Their Variation with A15Composition, Morphology and Strain State  

SciTech Connect (OSTI)

Significant efforts can be found throughout the literature to optimize the current carrying capacity of Nb{sub 3}Sn superconducting wires. The achievable transport current density in wires depends on the A15 composition, morphology and strain state. The A15 sections in wires contain, due to compositional inhomogeneities resulting from solid state diffusion A15 formation reactions, a distribution of superconducting properties. The A15 grain size can be different from wire to wire and is also not necessarily homogeneous across the A15 regions. Strain is always present in composite wires, and the strain state changes as a result of thermal contraction differences and Lorentz forces in magnet systems. To optimize the transport properties it is thus required to identify how composition, grain size and strain state influence the superconducting properties. This is not accurately possible in inhomogeneous and spatially complex systems such as wires. This article therefore gives an overview of the available literature on simplified, well defined(quasi--)homogeneous laboratory samples. After more than 50 years of research on superconductivity in Nb{sub 3}Sn, a significant amount of results are available, but these are scattered over a multitude of publications. Two reviews exist on the basic properties of A15 materials in general, but no specific review for Nb{sub 3}Sn is available. This article is intended to provide such an overview. It starts with a basic description of the Niobium--Tin intermetallic. After this it maps the influence of Sn content on the electron--phonon interaction strength and on the field-temperature phase boundary. The literature on the influence of Cu, Ti and Ta additions will then be briefly summarized.This is followed by a review on the effects of grain size and strain. The article is concluded with a summary of the main results.

Godeke, Arno

2006-03-27T23:59:59.000Z

51

Correlation between physical and acoustic properties in surficial sediments of the Northwest Gulf of Mexico  

E-Print Network [OSTI]

in the Northwest Gulf of Mexico. Empirical relationships were established between the sediment properties and shown to be generally applicable to similar sedimentary environments. The study area was divided into six provinces based on physical and acoustic...

Bean, Daniel A

2012-06-07T23:59:59.000Z

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

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

54

Consolidation characteristics and related physical properties of selected sediments from the Gulf of Mexico  

E-Print Network [OSTI]

CONSOLIDATION CHARACTERISTICS AND RELATED PHYSICAL PROPERTIES OF SELECTED SEDIMENTS FROM THE GULF OF MEXICO A Thesis PAUL ZOHN CERNOCK Submitted to the Graduate College of the Texas ASM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1967 Major Subject: GEOLOGICAL OCEANOGRAPHY CONSOLIDATION CHARACTERISTICS AND RELATED PHYSICAL PROPERTIES OF SELECTED SEDIMENTS FROM THE GULP OF MEXICO A Thesis PAUL 30HN CERNOCK Approved as to style and content by...

Cernock, Paul John

2012-06-07T23:59:59.000Z

55

Physical properties of agave cellulose graft polymethyl methacrylate  

SciTech Connect (OSTI)

The grafting polymerization of methyl methacrylate and Agave cellulose was prepared and their structural analysis and morphology were investigated. The grafting reaction was carried out in an aqueous medium using ceric ammonium nitrate as an initiator. The structural analysis of the graft copolymers was carried out by Fourier transform infrared and X-ray diffraction. The graft copolymers were also characterized by field emission scanning electron microscopy (FESEM). An additional peak at 1732 cm{sup ?1} which was attributed to the C=O of ester stretching vibration of poly(methyl methacrylate), appeared in the spectrum of grafted Agave cellulose. A slight decrease of crystallinity index upon grafting was found from 0.74 to 0.68 for cellulose and grafted Agave cellulose, respectively. Another evidence of grafting showed in the FESEM observation, where the surface of the grafted cellulose was found to be roughed than the raw one.

Rosli, Noor Afizah; Ahmad, Ishak; Abdullah, Ibrahim; Anuar, Farah Hannan [Polymer Research Centre (PORCE), School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi Selangor (Malaysia)

2013-11-27T23:59:59.000Z

56

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 2C 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

57

Thermo Physical Properties of Materials for Solid Oxide Fuel Cells  

Science Journals Connector (OSTI)

Solid oxide fuel cells (SOFCs) are energy conversion devices that convert chemical energy to electrical energy with high efficiency and have the added advantage of least production of pollutants during their operation. SOFCs comprise of a number of components such as the anode the electrolyte the cathode and the interconnect. Each of these components is made of a different material with different thermophysical and electrical properties. Thermal expansion coefficient is one of the most important properties of these compounds. Various components should have matching thermal expansion behaviour to avoid cracking during thermal cycling and for long term operation of SOFCs. In this article the thermophysical properties of materials for solid oxide fuel cells will be discussed with special emphasize on their thermal expansion behaviour.

S. R. Bharadwaj

2010-01-01T23:59:59.000Z

58

Effects of morphology on the electronic and transport properties of Sn-based clathrates  

Science Journals Connector (OSTI)

Density-functional calculations are used to study the electronic structure and transport properties of the type-I clathrates K 8 Sn 46 and K 8 Sn 44 ? 2 (? is a missing Sn atom) and the type-III clathrate K 8 Sn 25 . We show K 8 Sn 44 ? 2 to be more stable than the defect-free K 8 Sn 46 with K 8 Sn 46 being metallic and K 8 Sn 44 ? 2 ; semimetallic. K 8 Sn 25 is a zintl-phase semiconductor with a band gap of 0.5 eV. It has flatter bands than the type-I clathrates and can be expected to exhibit a smaller electrical conductivity but much larger Seebeck coefficient than the almost zintl K 8 Sn 44 ? 2 . The figure of merit of the type-III clathrate is an order of magnitude larger than its type-I counterparts. This would make a suitably doped K 8 Sn 25 at least as good a thermoelectric as the best Ge-based type-I clathrates and potentially better depending on the momentum relaxation time for carriers in this material.

Lone Mllnitz; Nick P. Blake; Horia Metiu

2002-01-01T23:59:59.000Z

59

Crystalline structure and physical properties of ship superstructure spray ice  

Science Journals Connector (OSTI)

...ice accretion on a ship, and the properties...result of the integrated effects of spray frequency...seaworthiness by its effects on ship centre of gravity and...various locations on the ship. It also has a large effect upon the ultimate strength...

2000-01-01T23:59:59.000Z

60

DISSERTATION THE OPTICAL, CHEMICAL, AND PHYSICAL PROPERTIES OF AEROSOLS AND  

E-Print Network [OSTI]

AND GASES EMITTED BY THE LABORATORY COMBUSTION OF WILDLAND FUELS Biomass burning is a major source of trace BY THE LABORATORY COMBUSTION OF WILDLAND FUELS Submitted by Gavin R. McMeeking Department of Atmospheric Science PROPERTIES OF AEROSOL AND GASES EMITTED BY THE LABORATORY COMBUSTION OF WILDLAND FUELS BE ACCEPTED

Pierce, Jeffrey

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

Active doublet method for measuring small changes in physical properties  

DOE Patents [OSTI]

Small changes in material properties of a work piece are detected by measuring small changes in elastic wave velocity and attenuation within a work piece. Active, repeatable source generate coda wave responses from a work piece, where the coda wave responses are temporally displaced. By analyzing progressive relative phase and amplitude changes between the coda wave responses as a function of elapsed time, accurate determinations of velocity and attenuation changes are made. Thus, a small change in velocity occurring within a sample region during the time periods between excitation origin times (herein called "doublets") will produce a relative delay that changes with elapsed time over some portion of the scattered waves. This trend of changing delay is easier to detect than an isolated delay based on a single arrival and provides a direct measure of elastic wave velocity changes arising from changed material properties of the work piece.

Roberts, Peter M. (Los Alamos, NM); Fehler, Michael C. (Los Alamos, NM); Johnson, Paul A. (Santa Fe, NM); Phillips, W. Scott (Santa Fe, NM)

1994-01-01T23:59:59.000Z

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

Effects of Fuel Physical Properties on Diesel Engine Combustion Using Diesel and Bio-Diesel Fuels  

SciTech Connect (OSTI)

A computational study is performed to investigate the effects of physical property on diesel engine combustion characteristics using bio-diesel fuels. Properties of typical bio-diesel fuels that were either calculated or measured are used in the study and the simulation results are compared with those of conventional diesel fuels. Sensitivity of the computational results to individual physical properties is also investigated, and the results can provide information for desirable characteristics of the blended fuels. The properties considered in this study include liquid density, vapor pressure, surface tension, liquid viscosity, liquid thermal conductivity, liquid specific heat, latent heat, vapor specific heat, vapor diffusion coefficient, vapor viscosity and vapor thermal conductivity. The results show significant effects of the fuel physical properties on ignition delay and burning rates at various engine operating conditions. It is seen that there is no single physical property that dominates differences of ignition delay between diesel and bio-diesel fuels. However, among the 11 properties considered in the study, the simulation results were found to be most sensitive to the liquid fuel density, vapor pressure and surface tension through their effects on the mixture preparation processes.

Ra, Youngchul [ORNL; Reitz, Rolf [University of Wisconsin; McFarlane, Joanna [ORNL; Daw, C Stuart [ORNL

2007-01-01T23:59:59.000Z

64

Intrinsic physical properties and Doppler boosting effects in LSI+61303  

E-Print Network [OSTI]

Our aim is to show how variable Doppler boosting of an intrinsically variable jet can explain the long-term modulation of 1667 \\pm 8 days observed in the radio emission of LSI+61303. The physical scenario is that of a conical, magnetized plasma jet having a periodical (P1) increase of relativistic particles, Nrel, at a specific orbital phase, as predicted by accretion in the eccentric orbit of LSI+61303. Jet precession (P2) changes the angle, eta, between jet axis and line of sight, thereby inducing variable Doppler boosting. The problem is defined in spherical geometry, and the optical depth through the precessing jet is calculated by taking into account that the plasma is stratified along the jet axis. The synchrotron emission of such a jet was calculated and we fitted the resulting flux density Smodel(t) to the observed flux density obtained during a 6.5-year monitoring of LSI+61303 by the Green Bank radio interferometer. Our physical model for the system LSI+61303 is not only able to reproduce the long-te...

Massi, M

2014-01-01T23:59:59.000Z

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 Haasvan 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

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

E-Print Network [OSTI]

graph1c units and their sonic properties; 6. comparing the sonic logg1ng data with geotechnical test results; 7. applying the tool through the production of physical rock character1zati on maps using the sonic and strat1graphic logs of overburden...graph1c units and their sonic properties; 6. comparing the sonic logg1ng data with geotechnical test results; 7. applying the tool through the production of physical rock character1zati on maps using the sonic and strat1graphic logs of overburden...

Cato, Kerry Don

2012-06-07T23:59:59.000Z

67

Unsaturated conductivity and diffusivity of selected Texas soils in relation to their physical and chemical properties  

E-Print Network [OSTI]

in "ar'tial Puli lilt~en' of the reauinezer. t, fan the de;cee o KH 6 ' S "I' N Augus". IooR Xa)on Suspect: Soil PHYsics UNSATURATED CONDUCTIVITY AND DIFFUSIVITY OF SELECTED TEXAS SOILS IN RELATION TO THEIR PHYSICAL AND CHE1'IICAL PROPERTIES A... THesis George Lewis Derendingez Approved as to style and content by: Chas. I+ f ' ~1tt (~lember (l'Le Id+ID ) Anglst 1ooG AB STRA CT Unsaturated Conductivity and Diffusivity of Selected Texas Soils in Relation to Their Physical and Chemical...

Derendinger, George Lewis

2012-06-07T23:59:59.000Z

68

PHYSICAL REVIEW B 85, 155101 (2012) Electronic properties of layered multicomponent wide-band-gap oxides: A combinatorial approach  

E-Print Network [OSTI]

PHYSICAL REVIEW B 85, 155101 (2012) Electronic properties of layered multicomponent wide 2012) The structural, electronic, and optical properties of 12 multicomponent oxides with layered self-consistent screened-exchange local density approximation calculations. Strikingly, despite

Medvedeva, Julia E.

69

Impact of the non-planar morphology of pre-patterned substrates on the structural and electronic properties of embedded site-controlled InAs quantum dots  

SciTech Connect (OSTI)

We present an experimental and theoretical analysis of the influence of a surface nanopattern on the properties of embedded InAs/GaAs quantum dots (QD). In particular, we analyze QDs grown on nanoimprint lithography (NIL) patterned grooves and investigate the influence of the non-planar surface morphology on the size, shape, strain distribution, and electronic structure of the embedded QDs. We show that the height reduction of InAs QDs during GaAs capping is significantly less pronounced for the QDs grown on the pattern than for the self-assembled QDs. Furthermore, the pattern has a strong impact on the strain and composition profile within the QD. The experimentally observed strain distribution was successfully reproduced with a three-dimensional model assuming an inverse-cone type composition gradient. Moreover, we show that the specific morphology of the QDs grown in the grooves gives rise to an increase of the vertically polarized photoluminescence emission which was explained by employing 8-band k.p calculations. Our findings emphasize that the surface curvature of the pattern not only determines the nucleation sites of the QDs but also has a strong impact on their morphological properties including shape, size, composition profile, and strain distribution. These properties are strongly cross-correlated and determine the electronic and optical characteristics of the QDs.

Hakkarainen, T. V.; Tommila, J.; Schramm, A.; Guina, M. [Optoelectronics Research Centre, Tampere University of Technology, P.O. Box 692, FIN-33101 Tampere (Finland); Luna, E. [Paul-Drude-Institut fr Festkrperelektronik, Hausvogteiplatz 5-7, 10117 Berlin (Germany)

2013-11-07T23:59:59.000Z

70

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

71

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

72

Effect of micronizing on physical, chemical and physicochemical properties of sorghum  

E-Print Network [OSTI]

. The physical properties include t test weight (lb/bu), thousand kernel weight (g) ~ d( ns' ty (g/cc), hardness value (q' of we' ght over a $12 sieve), and kernel size index (KSI) ~ Hard &as ie considered to be directly ela'Ced to the proportion of corneous...

Chou, Choa-Lin

2012-06-07T23:59:59.000Z

73

Capabilities for measuring physical and chemical properties of rocks at high pressure  

SciTech Connect (OSTI)

The Experimental Geophysics Group of the Earth Sciences Department at Lawrence Livermore National Laboratory (LLNL) has experimental equipment that measures a variety of physical properties and phase equilibria and kinetics on rocks and minerals at extreme pressures (to 500 GPa) and temperatures (from 10 to 2800 K). These experimental capabilities are described in this report in terms of published results, photographs, and schematic diagrams.

Durham, W.B. (comp.)

1990-01-01T23:59:59.000Z

74

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

75

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

E-Print Network [OSTI]

was to investigate how nascent apoB-LP physical properties affect circulating lipoprotein profiles and risk of disease. Relationships between apoB-LP physical properties and arterial plaque formation in four genotypes of mice with apoB isoform specific clearance...

Wang, Limin

2005-11-01T23:59:59.000Z

76

Microsoft PowerPoint - Computational Studies of Physical Properties of Nb-Si_Ouyang  

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

Studies of Mechanical Studies of Mechanical Properties of Nb-Si Based Alloys DOE Grant # DE-FE-0003798 Lizhi Ouyang (PI) Tennessee State University Pittsburgh, PA June 11, 2013 Goal Develop a software package to facilitate the first principles calculations of physical properties of crystals and solid solutions commonly found in alloys. Compute thermodynamic and mechanical properties of various phases found in the Nb-Si-Cr-X alloy systems. Methods: G(P, T) package  First principles calculations based on DFT (VASP)  Born-Oppenheimer approximation  Harmonic model for vibrational free energy  Quasi-harmonic approximation for first order anharmonicity  Berry phase approach for polarization  RPA for optical properties  Helmholtz free energy F({a},T)

77

Physics  

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

Physics Physics1354608000000PhysicsSome of these resources are LANL-only and will require Remote Access.No Physics Some of these resources are LANL-only and will require Remote...

78

Effect of biomass feedstock chemical and physical properties on energy conversion processes: Volume 1, Overview  

SciTech Connect (OSTI)

Pacific Northwest Laboratory has completed an initial investigation of the effects of physical and chemical properties of biomass feedstocks relative to their performance in biomass energy conversion systems. Both biochemical conversion routes (anaerobic digestion and ethanol fermentation) and thermochemical routes (combustion, pyrolysis, and gasification) were included in the study. Related processes including chemical and physical pretreatment to improve digestibility, and size and density modification processes such as milling and pelletizing were also examined. This overview report provides background and discussion of feedstock and conversion relationships, along with recommendations for future research. The recommendations include (1) coordinate production and conversion research programs; (2) quantify the relationship between feedstock properties and conversion priorities; (3) develop a common framework for evaluating and characterizing biomass feedstocks; (4) include conversion effects as part of the criteria for selecting feedstock breeding programs; and (5) continue emphasis on multiple feedstock/conversion options for biomass energy systems. 9 refs., 3 figs., 2 tabs.

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

1988-12-01T23:59:59.000Z

79

Cleaning Quality of Raw Cotton as Affected by Physical Properties of Fibers.  

E-Print Network [OSTI]

TEXAS AGRICULTURAL EXPERIMENT STATION I R. D. LEWIS, Director College Station, Texas j BULLETIN NO. 697 OCTOBER 1947 I i Cleaning Quality of Raw Cotton as I/ Afected by Physical Properties I of Fibers I i / MARY ANNA GRIMES, Textile... Bulletin] Preface 'The amount of cotton which is mechanically harvested is increas- ing each year as efforts are being made to lower the costs of produc- tion through mechanization. Mechanically harvested cotton contains more trash than hand...

Grimes, Mary Anna

1947-01-01T23:59:59.000Z

80

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

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

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

82

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

83

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

84

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 matrixcopper 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? the formation of metallic aluminum overlayer on CuPc thin film takes place.

Molodtsova, O. V.; Babenkov, S. V. [Deutsches Elektronen-Synchrotron DESY, Notkestrae 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) fr Materialien und Energie, Albert-Einstein-Strae 15, 12489 Berlin (Germany); Aristov, V. Yu., E-mail: aristov@issp.ac.ru [Deutsches Elektronen-Synchrotron DESY, Notkestrae 85, 22607 Hamburg (Germany); Institute of Solid State Physics of Russian Academy of Sciences, Chernogolovka 142432 (Russian Federation); Institut fr Theoretische Physik, Universitt Hamburg, Jungiusstrae 9, D-20355 Hamburg (Germany)

2014-04-28T23:59:59.000Z

85

Physics  

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

Physics Physics Physics Print Because a large proportion of ALS experiments are "physics" experiments, it's useful to separate them into two categories - one focused on Materials/Condensed Matter, and this one, with a dual focus on AMO (atomic, molecular, and optical) physics and accelerator physics. Light sources such as the ALS have opened up research frontiers that may hold the answers to fundamental questions about structure and dynamics in AMO physics. The advanced spectroscopies that have been developed here provide the ability to control and probe atomic and molecular processes with unprecedented precision. In particular, the spectral resolution, brightness, broad tunability, and polarization control generate novel avenues for the study of tailored states, inner-shell processes, and nonperturbative electron interactions. Driven by the high brightness of the ALS, a whole new world of vacuum ultraviolet (VUV) and soft x-ray physics has emerged through the development of combined techniques to excite, select, and probe atoms, molecules, and clusters.

86

Influence of Nanoclay Concentration on the CO2 Diffusion and Physical Properties of PMMA Montmorillonite Microcellular Foams  

Science Journals Connector (OSTI)

Influence of Nanoclay Concentration on the CO2 Diffusion and Physical Properties of PMMA Montmorillonite Microcellular Foams ... (3, 4) Particularly, the dispersion of high aspect ratio nanoclays in polymers has been used as a possible strategy to improve some properties of the base material at relatively low filler amounts (<10 wt %). ...

Vera Realinho; Marcelo Antunes; Antonio B. Martnez; Jos I. Velasco

2011-11-08T23:59:59.000Z

87

Effects of nanoclay type on the physical and antimicrobial properties of PVOH-based nanocomposite films  

Science Journals Connector (OSTI)

Abstract Polyvinyl alcohols-based nanocomposite films with four types of montmorillonite (MMT) nanoclay, including 18-amino stearic acid (I.24TL), methyl, bis hydroxyethyl, octadecyl ammonium (I.34TCN), di-methyl, di-hydrogenated tallow ammonium/siloxane (I.44PSS) organically modified MMT and a natural MMT (Na+-MMT) were fabricated by a solution-intercalation, film-casting method, and effects of the nanoclays were evaluated on physical properties, including transmittance, tensile strength (TS), elongation at break (E), water solubility (WS), swelling ratio (SR), water vapor uptake ratio (WVUR), and water vapor permeability (WVP), as well as antimicrobial activity of the polyvinyl alcohols-based films. Transmittance, WS, SR, WVUR, WVP of the nanocomposite films were significantly reduced by nano-composition compared to a pure polyvinyl alcohols film. The WVP decreased by 11.820.7%, and WS, SR and WVUR decreased by 19.941.8%, 9.126.4%, and 4.812.8%, respectively. The extent of changes was dependent on nanoclay type. X-ray diffraction patterns revealed that intercalation was formed in nanocomposite films. Overall among all the tested nanoclays, Na+-MMT showed more impact on physical properties of polyvinyl alcohols films, and the polyvinyl alcohols film compounded with quaternary ammonium group displayed remarkable antimicrobial activity against Gram-positive bacteria.

Guichao Liu; Ye Song; Jiamei Wang; Hong Zhuang; Lei Ma; Can Li; Yao Liu; Jianhao Zhang

2014-01-01T23:59:59.000Z

88

Physical properties of the WASP-67 planetary system from multi-colour photometry  

E-Print Network [OSTI]

The extrasolar planet WASP-67 b is the first hot Jupiter definitively known to undergo only partial eclipses. The lack of the second and third contact point in this planetary system makes it difficult to obtain accurate measurements of its physical parameters. Aims. By using new high-precision photometric data, we confirm that WASP-67 b shows grazing eclipses and compute accurate estimates of the physical properties of the planet and its parent star. Methods. We present high-quality, multi-colour, broad-band photometric observations comprising five light curves covering two transit events, obtained using two medium-class telescopes and the telescope-defocussing technique. One transit was observed through a Bessel-R filter and the other simultaneously through filters similar to Sloan griz. We modelled these data using jktebop. The physical parameters of the system were obtained from the analysis of these light curves and from published spectroscopic measurements. Results. All five of our light curves satisfy t...

Mancini, L; Ciceri, S; Novati, S Calchi; Dominik, M; Henning, Th; Jorgensen, U G; Korhonen, H; Nikolov, N; Alsubai, K A; Bozza, V; Bramich, D M; D'Ago, G; Jaimes, R Figuera; Galianni, P; Gu, S -H; Harpsoe, K; Hinse, T C; Hundertmark, M; Juncher, D; Kains, N; Popovas, A; Rabus, M; Rahvar, S; Skottfelt, J; Snodgrass, C; Street, R; Surdej, J; Tsapras, Y; Vilela, C; Wang, X -B; Wertz, O

2014-01-01T23:59:59.000Z

89

Physics  

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

Physics Print Physics Print Because a large proportion of ALS experiments are "physics" experiments, it's useful to separate them into two categories - one focused on Materials/Condensed Matter, and this one, with a dual focus on AMO (atomic, molecular, and optical) physics and accelerator physics. Light sources such as the ALS have opened up research frontiers that may hold the answers to fundamental questions about structure and dynamics in AMO physics. The advanced spectroscopies that have been developed here provide the ability to control and probe atomic and molecular processes with unprecedented precision. In particular, the spectral resolution, brightness, broad tunability, and polarization control generate novel avenues for the study of tailored states, inner-shell processes, and nonperturbative electron interactions. Driven by the high brightness of the ALS, a whole new world of vacuum ultraviolet (VUV) and soft x-ray physics has emerged through the development of combined techniques to excite, select, and probe atoms, molecules, and clusters.

90

Morphological neural networks  

SciTech Connect (OSTI)

The theory of artificial neural networks has been successfully applied to a wide variety of pattern recognition problems. In this theory, the first step in computing the next state of a neuron or in performing the next layer neural network computation involves the linear operation of multiplying neural values by their synaptic strengths and adding the results. Thresholding usually follows the linear operation in order to provide for nonlinearity of the network. In this paper we introduce a novel class of neural networks, called morphological neural networks, in which the operations of multiplication and addition are replaced by addition and maximum (or minimum), respectively. By taking the maximum (or minimum) of sums instead of the sum of products, morphological network computation is nonlinear before thresholding. As a consequence, the properties of morphological neural networks are drastically different than those of traditional neural network models. In this paper we consider some of these differences and provide some particular examples of morphological neural network.

Ritter, G.X.; Sussner, P. [Univ. of Florida, Gainesville, FL (United States)

1996-12-31T23:59:59.000Z

91

Identification of physical properties for the retrieval data quality objective process  

SciTech Connect (OSTI)

This activity supports the retrieval data quality objective (DQO) process by identifying the material properties that are important to the design, development, and operation of retrieval equipment; the activity also provides justification for characterizing those properties. These properties, which control tank waste behavior during retrieval operations, are also critical to the development of valid physical simulants for designing retrieval equipment. The waste is to be retrieved in a series of four steps. First, a selected retrieval technology breaks up or dislodges the waste into subsequently smaller pieces. Then, the dislodged waste is conveyed out of the tank through the conveyance line. Next, the waste flows into a separator unit that separates the gaseous phase from the liquid and solid phases. Finally, a unit may be present to condition the slurried waste before transporting it to the treatment facility. This document describes the characterization needs for the proposed processes to accomplish waste retrieval. Baseline mobilization technologies include mixer pump technology, sluicing, and high-pressure water-jet cutting. Other processes that are discussed in this document include slurry formation, pneumatic conveyance, and slurry transport. Section 2.0 gives a background of the DQO process and the different retrieval technologies. Section 3.0 provides the mechanistic descriptions and material properties critical to the different technologies and processes. Supplemental information on specific technologies and processes is provided in the appendices. Appendix A contains a preliminary sluicing model, and Appendices B and C cover pneumatic transport and slurry transport, respectively, as prepared for this document. Appendix D contains sample calculations for various equations.

Gates, C.M.; Beckette, M.R.

1995-06-01T23:59:59.000Z

92

Geochemical and physical properties of wetland soils at the Savannah River site  

SciTech Connect (OSTI)

The Savannah River Site (SRS), located in Aiken, Allendale, and Barnwell Counties, South Carolina, is a nuclear production facility operated for the U.S. Department of Energy (DOE) by Westinghouse Savannah River Company (WSRC). To facilitate future human health and ecological risk assessments, treatability studies, remedial investigations, and feasibility studies for its wetland areas, SRS needs a database of background geochemical and physical properties of wetland soils. These data are needed for comparison to data collected from wetland soils that may have been affected by SRS operations. SRS contains 36,000 acres of wetlands and an additional 5,000 acres of bottom land soils subject to flooding. Recent studies of wetland soils near various waste units at SRS show that some wetlands have been impacted by releases of contaminants resulting from SRS operations (WSRC, 1992). Waste waters originating from the operations facilities typically have been discharged into seepage basins located in upland soils, direct discharge of waste water to wetland areas has been minimal. This suggests that impacted wetland areas have been affected indirectly as a result of transport mechanisms such as surface runoff, groundwater seeps, fluvial or sediment transport, and leaching. Looney et al. (1990) conducted a study to characterize the geochemical and physical properties of upland soils and shallow sediments on the SRS. A primary objective of the upland study was to collect the data needed to assess the qualitative and quantitative impacts of SRS operations on the environment. By comparing the upland soils data to data collected from waste units located in similar soils, SRS impacts could be assessed. The data were also intended to aid in selection of remediation alternatives. Because waste units at SRS have historically been located in upland areas, wetland soils were not sampled. (Abstract Truncated)

Dixon, K.L; Rogers, V.A.; Conner, S.P.; Cummings, C.L.; Gladden, J.B.; Weber, J.M.

1996-05-01T23:59:59.000Z

93

Soil physical and hydrological properties under three biofuel crops in Ohio  

SciTech Connect (OSTI)

While biofuel crops are widely studied and compared for their energy and carbon footprints, less is known about their effects on other soil properties, particularly hydrologic characteristics. Soils under three biofuel crops, corn (Zea mays), switchgrass (Panicum virgatum), and willow (Salix spp.), were analyzed seven years after establishment to assess the effects on soil bulk density ({rho}{sub b}), penetration resistance (PR), water-holding capacity, and infiltration characteristics. The PR was the highest under corn, along with the lowest associated water content, while PR was 50-60% lower under switchgrass. In accordance with PR data, surface (0-10 cm) bulk density also tended to be lower under switchgrass. Both water infiltration rates and cumulative infiltration amounts varied widely among and within the three crops. Because the Philip model did not fit the data, results were analyzed using the Kostiakov model instead. Switchgrass plots had an average cumulative infiltration of 69 cm over 3 hours with a constant infiltration rate of 0.28 cm min{sup -1}, compared with 37 cm and 0.11 cm min{sup -1} for corn, and 26 cm and 0.06 cm min{sup -1} for willow, respectively. Results suggest that significant changes in soil physical and hydrologic properties may require more time to develop. Soils under switchgrass may have lower surface bulk density, higher field water capacity, and a more rapid water infiltration rate than those under corn or willow.

Bonin, Catherine [Ohio State University; Lal, Dr. Rattan [Ohio State University; Schmitz, Matthias [Rheinsche Friedrich/Wilhelms Universitaet Boon; Wullschleger, Stan D [ORNL

2012-01-01T23:59:59.000Z

94

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

95

Physical Properties of Solid Particle Thermal Energy Storage Media for Concentrating Solar Power Applications  

Science Journals Connector (OSTI)

Abstract Solid ceramic particles have proven to be an effective heat transfer and thermal storage media for central receiver power production for a heat input temperature up to 1000C. In the directly illuminated solid particle receiver, a cascade of ?0.1-1mm diameter particles is directly heated within a receiver cavity by concentrated solar energy. The efficiency of this approach, with respect to the energy balance on the receiver itself, is dependent on the physical properties of the particles. In this work, the radiative properties, solar weighted absorptance and thermal emittance, have been measured for several commercially available particle candidates both in the as-received state and after thermal exposure to simulate extended operation at elevated temperature in air between 700?C-1000?C. Heating the particles is shown to significantly reduce the solar weighted absorptance of as-received particles within 24hours of exposure to air at 1000C, while heating at 700C in air has relatively little effect. In the as-received state, solar weighted absorptance can be as high as 93%, dropping to 84% after 192hours at 1000?C. Particle stability is better at 700?C, and the solar absorptance remains above 92% after 192hours of exposure. Analysis using x-ray diffraction (XRD) shows evidence of multiple chemical transformations in the sintered bauxite particle materials, which contain oxides of aluminum, silicon, titanium, and iron, following heating in air. However, the XRD spectra show only small differences between as-received and heat treated particles leaving open the possibility that the observed change in radiative properties results from a change in oxidation state without a concomitant phase change. Regardless of the specific degradation mechanism, t he solar weighted absorptance of the particles can be increased beyond the as-received condition by chemically reducing the particles in forming gas (5%H2 in N2 or Ar) above 700C, providing a possible means of periodically rejuvenating degraded particles in situ.

N. Siegel; M. Gross; C. Ho; T. Phan; J. Yuan

2014-01-01T23:59:59.000Z

96

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

97

Analysis of the thermo-physical properties of soils and rocky materials in trento area related to use of the subsoil as a thermal energy storage.  

E-Print Network [OSTI]

??The thesis analyzes the thermo-physical properties of soils and rocky materials in trento area related to use of the subsoil as a thermal energy storage. (more)

Ruggeri, Martino

2014-01-01T23:59:59.000Z

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

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 involve fluid flow and are controlled to some degree by fluid viscosity. Viscosity is the tendency, viscosity is related to molecular dif- fusion and depends on the interactions between molecules or

Kostic, Milivoje M.

100

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

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

Influence of Chemical and Physical Properties of Activated Carbon Powders on Oxygen Reduction and Microbial Fuel Cell Performance  

E-Print Network [OSTI]

resource. Cathode materials can account for 47-75% of the MFC capital costs,5 and therefore it is important to choose less expensive materials as the cathode catalyst. Several catalysts have been considered for useInfluence of Chemical and Physical Properties of Activated Carbon Powders on Oxygen Reduction

104

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

105

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

106

Physics  

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

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 of Physics,...

107

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

108

Sulfur and ash reduction potential and selected chemical and physical properties of United States coals  

SciTech Connect (OSTI)

This report summarizes the washability and comprehensive characterization of 975 raw coal channel samples collected from the Eastern, Central, and Western Regions (including Alaska) of the United States. All of this information is sorted in the Pittsburgh Energy Technology Center (PETC) Coal Technology Data Base. Individual reports for each region were completed previously as Volumes 1, 2, and 3 and included the detailed data for each of the 975 samples. This report is a summation of the results of those three reports on a state- and region-wide basis only, and does not include the data for individual samples, but only includes the composite data for each state and region. Graphical summations are presented by state, section or rank, and region showing the effects of crushing on impurity reductions and showing the distribution of raw and clean coal samples meeting various levels of SO{sub 2} emissions. The statistical evaluations in the Appendices present the composited washability data of 1.30, 1.40, and 1.60 specific gravities of separation, the selected chemical and physical properties, and the composited washability data interpolated at various levels of Btu recovery. 13 refs., 93 figs., 9 tabs.

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

1991-09-01T23:59:59.000Z

109

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

110

Influence of combustion conditions and coal properties on physical properties of fly ash generated from pulverized coal combustion  

SciTech Connect (OSTI)

To develop combustion technology for upgrading the quality of fly ash, the influences of the coal properties, such as the size of pulverized coal particles and the two-stage combustion ratio during the combustion, on the fly ash properties were investigated using our test furnace. The particle size, density, specific surface area (obtained by the Blaine method), and shape of fly ash particles of seven types of coal were measured. It was confirmed that the size of pulverized coal particles affects the size of the ash particles. Regarding the coal properties, the fuel ratio affected the ash particle size distribution. The density and shape of the ash particles strongly depended on their ash size. Our results indicated that the shape of the ash particles and the concentration of unburned carbon affected the specific surface area. The influence of the two-stage combustion ratio was limited. 8 refs., 13 figs., 3 tabs.

Hiromi Shirai; Hirofumi Tsuji; Michitaka Ikeda; Toshinobu Kotsuji [Central Research Institute of Electric Power Industry, Kanagawa (Japan)

2009-07-15T23:59:59.000Z

111

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

112

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... AND DRYLAND SORGHUM YIELDS A Thesis by JAIME ROEL SALINAS-GARCIA Approved as to style and content by: (Co-Chairman of Committ. ee) ( o-Chairman of Committee) (Member) (Head of Department) December 1981 ABSTRACT Effect of Tillage Systems, Row...

Salinas-Garcia, Jaime Roel

2012-06-07T23:59:59.000Z

113

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

2012-06-07T23:59:59.000Z

114

Influence of amine-grafted multi-walled carbon nanotubes on physical and rheological properties of PMMA-based nanocomposites  

SciTech Connect (OSTI)

In this work, poly(methyl methacrylate) (PMMA) was grafted onto amine treated multi-walled carbon nanotubes (NH-MWNTs) and the physical and rheological properties of the NH-MWNTs-g-PMMA nanocomposites were investigated. The graft reaction of NH-MWNTs and the PMMA matrix was confirmed from the change of the N{sub 1S} peaks, including those of amine oxygen and amide oxygen, by X-ray photoelectron spectroscopy (XPS). The thermal and mechanical properties of the NH-MWNT-g-PMMA nanocomposites were enhanced by the graft reaction between NH-MWNTs and PMMA matrix. In addition, the viscosity of the nanocomposites was increased with the addition of NH-MWNTs. Storage (G') and loss modulus (G'') were significantly increased by increase in the NH-MWNT content compared to acid-treated MWNTs/PMMA nanocomposites. This increase was attributed to the strong interaction by the grafting reaction between NH-MWNTs and the PMMA matrix. - Graphical abstract: This describes the increase of mechanical properties in NH-MWNTs-g-PMMA hybrid composites with different NH-MWNT contents. Highlights: > Aminized carbon nanotubes are used as reinforcement for poly(methylmethacrylate). > Poly(methylmethacrylate) is grafted on aminized carbon nanotubes by thermal reaction. > Grafting of carbon nanotubes and polymer provide enhanced physical properties. > It was due to the strong interaction between carbon nanotubes and polymer matrix.

Kim, Ki-Seok [Department of Chemistry, Inha University, Incheon 402-751 (Korea, Republic of); Park, Soo-Jin, E-mail: sjpark@inha.ac.kr [Department of Chemistry, Inha University, Incheon 402-751 (Korea, Republic of)

2011-11-15T23:59:59.000Z

115

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

116

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

117

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

118

The effect of product formulation and homogenization on the physical properties of the milk-fat globule and acid milk gels  

E-Print Network [OSTI]

The elect of homogenization pressure and product formulation on the composition physical and chemical properties of acid milk gels was evaluated. Nonfat dry milk, whey protein concentrate (WPC), cream, Span 60 and Tween 20, were combined to prepare...

Materon, Liliana

2012-06-07T23:59:59.000Z

119

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

E-Print Network [OSTI]

Silt, fraction Clay f'r act, ion& Coarse and fine clav fractions Differentia' therma analysis sand fraction 20 20 20 22 22 22 26 26 26 32 35 35 35 35 35 41 Table of Contents (Cont. ) Page Discussion Phys&eel Data Particie size... distribution Chemical Data Cation exchange capacity Exchangeable ca+iona Organic matter ccnten+ Range of Selected Properties of Lakeland Fine Sands Possible Effect oi' Climate on the Properties Relationship of the Fine Tex ured Underlying Horizons...

Rivers, Ernest Demois

2012-06-07T23:59:59.000Z

120

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

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

A study of the effect of weathering, silt content, and depth of burial on physical properties of shales from North-Central Texas  

E-Print Network [OSTI]

of the Agricultural and Mechanical College of Texas in Partial fulfillment of the requireaents for the degree of MASTER OF SCIENCE' Nays 1$58 Major Sub)acti Geology A BTUDX OF THF. FFFECT OF WEATHERING, SILT COBTFNTi AND DEPTH OF BURIAL ON PHTSICAL PBOPERTIFS... o ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 27 IV. Physical properties for unweathered, non-silt? and un- weathered, silty samples collected along strike. V. Physical properties for unweathereds non-silty and ur. - weathered, silty samples collected at same...

Wilson, Edmon Doak

2012-06-07T23:59:59.000Z

122

Chemical and Physical Properties of Atmospheric Aerosols (a) A Case Study in the Unique Properties of Agricultural Aerosols (b) The Role of Chemical Composition in Ice Nucleation during the Arctic Spring  

E-Print Network [OSTI]

dataset is reported for these physical and chemical properties of agricultural aerosols appropriate for use in a site-specific emission inventory. The emission rate and transport of the aerosols are also discussed. In addition, mixing ratios of total...

Moon, Seong-Gi

123

RHESSI HARD X-RAY IMAGING SPECTROSCOPY OF EXTENDED SOURCES AND THE PHYSICAL PROPERTIES OF ELECTRON ACCELERATION REGIONS IN SOLAR FLARES  

E-Print Network [OSTI]

RHESSI HARD X-RAY IMAGING SPECTROSCOPY OF EXTENDED SOURCES AND THE PHYSICAL PROPERTIES OF ELECTRON of the acceleration region but also allows an empirical study of the physics of electron tran- sport within the source acceleration and propagation of bremsstrahlung- producing electrons in solar flares. The method involves

California at Berkeley, University of

124

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.

125

Laboratory investigation of chemical and physical properties of soot-containing aerosols  

E-Print Network [OSTI]

SO4-coated soot aerosols; (3) effect of H2SO4 coating on scattering and extinction properties of soot particles. A low-pressure laminar-flow reactor, coupled to ion driftchemical ionization mass spectrometry (ID-CIMS) detection, is used to study...

Zhang, Dan

2006-08-16T23:59:59.000Z

126

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

127

Changes in soil physical properties and crop root growth in dense sodic subsoil following incorporation of organic amendments  

Science Journals Connector (OSTI)

Measurements of soil physical properties, root growth and the water content in the subsurface layers of a clay Sodosol soil were carried out to determine why the incorporation of organic amendment (20t/ha) resulted in marked increases in wheat yield in an earlier paper. The incorporation of lucerne or dynamic lifter pellets at a depth of 3040cm resulted in an almost doubling of the macroporosity from 18%, together with reductions in bulk density and the volumetric water content ( ? v ) at ?1500kPa, and a 50-fold increase on saturated hydraulic conductivity in this subsurface layer. These changes in physical properties in the 3040cm deep layer were highly correlated (r values 0.690.93, P<0.01) with increased root growth in this layer, and increases in crop yield. The practice of incorporating an organic amendment in the top clay layer of the B horizon in soils where the high density restricts root growth, which is termed subsoil manuring, shows promise for increasing crop productivity on these soils in the high rainfall zone of southern Australia.

J.S. Gill; P.W.G. Sale; R.R. Peries; C. Tang

2009-01-01T23:59:59.000Z

128

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

129

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 0.130.15 (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 0.984.22 mm, 3680 kg m-3, 49119 kg m-3, 6001220 kg m-3, and 0.90.96, 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 8890 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

130

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

131

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

132

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

133

Physical Properties of GaN Nanotubes as Revealed by Computer Simulation  

SciTech Connect (OSTI)

Single-crystalline wurtzite GaN nanotubes have been synthesized recently with proposed applications in nanoscale electronics, optoelectronics and the biochemical-sensing field. Molecular dynamics methods with a Stillinger-Weber potential are used to investigate the melting behavior, thermal conductivity and mechanical properties of these wurtzite-type single crystalline GaN nanotubes. Four major topical areas are summarized in this chapter. (1) The melting temperature of the GaN nanotubes increases with the thickness of the nanotubes to a saturation value, which is close to the melting temperature of bulk GaN. The simulations result reveal that the nanotubes begin to melt at the surface, and then the melting rapidly extends to the interior of the nanotubes as the temperature increases. (2) The thermal conductivity of nanotubes is smaller than that of the bulk GaN single crystal. The thermal conductivity is also found to decrease with temperature and increase with increasing wall thickness of the nanotubes. The change of phonon spectrum and surface inelastic scattering may account for the reduction of thermal conductivity in the nanotubes, while thermal softening and high frequency phonon interactions at high temperatures may provide an explanation for its decrease with increasing temperature. (3) At low temperatures, the simulation results show that the nanotubes exhibit brittle properties; whereas at high temperatures, they behave as ductile materials. The brittle to ductile transition temperature generally increases with increasing wall thickness of the nanotubes and increasing strain rate. (4) The simulation temperature, tube length and strain rate affect the buckling behavior of GaN nanotubes. The critical stress decreases with the increase of simulation temperature and tube length. The dependence of buckling on tube length is consistent with the analysis of equivalent continuum structures using Euler buckling theory.

Wang, Zhiguo; Gao, Fei; Zu, Xiaotao; Weber, William J.

2008-07-25T23:59:59.000Z

134

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

135

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

136

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...

Simn-Daz,; Lorenzo, J; Apellniz, J Maz; Schneider, F R N; Negueruela, I; Barb, R H; Dorda, R; Marco, A; Montes, D; Pellerin, A; Sanchez-Bermudez, J; Sdor, ; Sota, A

2014-01-01T23:59:59.000Z

137

Physical Chemistry of Ionic Liquids Symposium Schedule  

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

(Tentative Schedule, locations and times to be determined) (Tentative Schedule, locations and times to be determined) Sunday Morning Structure and Heterogeneity of Ionic Liquids I. James Wishart and Edward Castner Introductory Remarks Andre Pinkert Hydroxyamine ionic liquids and their properties Thomas Strassner TAAILs - Tunable Aryl-Alkyl Ionic Liquids: A new generation of ionic liquids Laura Sprunger Grubbs Thermodynamic Properties of New Generation Ionic Liquids Christopher Hardacre Prediction methods for physical properties of ionic liquids BREAK Patricia Hunt What happens when you functionalise an ionic liquid with a "silicone" side chain? Edward L Quitevis Effect of cation symmetry and nanoscale segregation on the morphology, physical properties, and low-frequency vibrational dynamics of 1,3-dialkylimidazolium cation ionic liquids

138

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

139

The local environmental dependence of galaxy properties in the volume-limited sample of Main Galaxies from the SDSS Data Release 5  

E-Print Network [OSTI]

Using a volume-limited sample of Main Galaxies from the SDSS Data Release 5, we investigate the dependence of galaxy properties on local environment. For each galaxy, the local three-dimensional density is calculated. We find that galaxy morphologies strongly depend on local environment: galaxies in dense environments have predominantly early type morphologies, but other galaxy properties do not present significant dependence on local environment. Clearly, this puts a important constraint on proposed physical mechanisms.

Xin-Fa Deng; Ji-Zhou He; Qun Zhang; Cong-Gen He; Peng Jiang; Yong Xin

2006-09-21T23:59:59.000Z

140

Effect of indium doping level on certain physical properties of CdS films deposited using an improved SILAR technique  

Science Journals Connector (OSTI)

The influence of indium (In) doping levels (0, 2, , 8at.%) on certain physical properties of cadmium sulphide (CdS) thin films deposited using an improved successive ionic layer adsorption and reaction (ISILAR) method has been studied. In this improved SILAR technique, a fresh anionic solution was introduced after a particular number of dipping cycles in order to achieve good stoichiometry. All the deposited films exhibited cubic phase with (111) plane as preferential orientation. The calculated crystallite size values are found to be decreased from 54.80nm to 23.65nm with the increase in In doping level. The optical study confirmed the good transparency (80%) of the film. A most compact and pinhole free smooth surface was observed for the CdS films with 8at.% of In doping level. The perceived photoluminescence (PL) bands endorsed the lesser defect crystalline nature of the obtained CdS:In films. The chemical composition analysis (EDAX) showed the near stoichiometric nature of this ISILAR deposited CdS:In films.

K. Ravichandran; V. Senthamilselvi

2013-01-01T23:59:59.000Z

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

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

142

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 247 raw coal channel samples, including anthracite, bituminous and lignite coals, collected from the Western Region of the United States. Although the Western Region includes Alaska, coal data from this state will often be cited apart from the Western Region data from the lower United States. This is the third 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 Western Region coals. Graphical summations are presented by state, rank, 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., 3 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))

1991-06-01T23:59:59.000Z

143

Physics analyses on the core plasma properties in the helical fusion DEMO reactor FFHR-d1  

Science Journals Connector (OSTI)

Physics assessments on magnetohydrodynamics equilibrium, neoclassical transport and alpha particle confinement have been carried out for the helical fusion DEMO reactor FFHR-d1, using radial profiles extrapolated from the Large Helical Device. Large Shafranov shift is foreseen in FFHR-d1 due to its high-beta property. This leads to deterioration in neoclassical transport and alpha particle confinement. Plasma position control using vertical magnetic field has been examined and shown to be effective for Shafranov shift mitigation. In particular, in the high-aspect-ratio configuration, it is possible to keep the magnetic surfaces similar to those in vacuum with high central beta of ~8% by applying a proper vertical magnetic field. As long as the Shafranov shift is mitigated, the neoclassical heat loss can be kept at a level compatible with the alpha heating power. The alpha particle loss can also be kept at a low level if the loss boundary of alpha particles is on the blanket surface and the plasma position control is properly applied. The lost positions of alpha particles are localized around the divertor region that is located behind the blanket in FFHR-d1.

J. Miyazawa; Y. Suzuki; S. Satake; R. Seki; Y. Masaoka; S. Murakami; M. Yokoyama; Y. Narushima; M. Nunami; T. Goto; C. Suzuki; I. Yamada; R. Sakamoto; H. Yamada; A. Sagara; the FFHR Design Group

2014-01-01T23:59:59.000Z

144

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: Polyimidesilica 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

145

Property  

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

7 7 AUDIT REPORT PERSONAL PROPERTY AT THE OAK RIDGE OPERATIONS OFFICE AND THE OFFICE OF SCIENTIFIC AND TECHNICAL INFORMATION U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL OFFICE OF AUDIT SERVICES APRIL 1998 Page 10 DEPARTMENT OF ENERGY Washington, DC 20585 April 6, 1998 MEMORANDUM FOR THE MANAGER, OAK RIDGE OPERATIONS OFFICE AND THE DIRECTOR, OFFICE OF SCIENTIFIC AND TECHNICAL INFORMATION FROM: Terry L. Brendlinger Eastern Regional Audit Office Office of Inspector General SUBJECT: INFORMATION: Audit Report on "Personal Property at the Oak Ridge Operations Office and the Office of Scientific and Technical Information" BACKGROUND The Oak Ridge Operations Office (Operations Office) and the Office of Scientific and Technical Information

146

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

147

Reading Comprehension - Properties and Changes  

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

Properties and Changes Properties and Changes Matter can be described and identified by physical and chemical properties. Physical _________ chemicals properties substances textures have to do with appearance. You can observe many physical properties with your senses and by measuring the length, _________ width density height property , height, mass and density of a substance. _________ Chemical Matter Described Physical properties include color, shape, smell, texture, taste and size. The state of matter (whether it's a solid, _________ water molecule liquid atom , or gas) and the _________ time temperature design cylinder at which the substance boils, melts or freezes are also physical properties. Magnetic properties are physical properties as well. _________ Chemical Physical Substance Gaseous properties, on the other

148

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

149

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

150

Status Report on Transfer of Physical and Hydraulic Properties Databases to the Hanford Environmental Information System - PNNL Remediation Decision Support Project, Task 1, Activity 6  

SciTech Connect (OSTI)

This document provides a status report on efforts to transfer physical and hydraulic property data from PNNL to CHPRC for incorporation into HEIS. The Remediation Decision Support (RDS) Project is managed by Pacific Northwest National Laboratory (PNNL) to support Hanford Site waste management and remedial action decisions by the U.S. Department of Energy and their contractors. The objective of Task 1, Activity 6 of the RDS project is to compile all available physical and hydraulic property data for sediments from the Hanford Site, to port these data into the Hanford Environmental Information System (HEIS), and to make the data web-accessible to anyone on the Hanford Local Area Network via the so-called Virtual Library. These physical and hydraulic property data are used to estimate parameters for analytical and numerical flow and transport models that are used for site risk assessments and evaluation of remedial action alternatives. In past years efforts were made by RDS project staff to compile all available physical and hydraulic property data for Hanford sediments and to transfer these data into SoilVision{reg_sign}, a commercial geotechnical software package designed for storing, analyzing, and manipulating soils data. Although SoilVision{reg_sign} has proven to be useful, its access and use restrictions have been recognized as a limitation to the effective use of the physical and hydraulic property databases by the broader group of potential users involved in Hanford waste site issues. In order to make these data more widely available and useable, a decision was made to port them to HEIS and to make them web-accessible via a Virtual Library module. In FY08 the original objectives of this activity on the RDS project were to: (1) ensure traceability and defensibility of all physical and hydraulic property data currently residing in the SoilVision{reg_sign} database maintained by PNNL, (2) transfer the physical and hydraulic property data from the Microsoft Access database files used by SoilVision{reg_sign} into HEIS, which is currently being maintained by CH2M-Hill Plateau Remediation Company (CHRPC), (3) develop a Virtual Library module for accessing these data from HEIS, and (4) write a User's Manual for the Virtual Library module. The intent of these activities is to make the available physical and hydraulic property data more readily accessible and useable by technical staff and operable unit managers involved in waste site assessments and remedial action decisions for Hanford. In FY08 communications were established between PNNL and staff from Fluor-Hanford Co. (who formerly managed HEIS) to outline the design of a Virtual Library module that could be used to access the physical and hydraulic property data that are to be transferred into HEIS. Data dictionaries used by SoilVision{reg_sign} were also provided to Fluor-Hanford personnel who are now with CHPRC. During ongoing work to ensure traceability and defensibility of all physical and hydraulic property data that currently reside in the SoilVision{reg_sign} database, it was recognized that further work would be required in this effort before the data were actually ported into HEIS. Therefore work on the Virtual Library module development and an accompanying User's Guide was deferred until an unspecified later date. In FY09 efforts have continued to verify the traceability and defensibility of the physical and hydraulic property datasets that are currently being maintained by PNNL. Although this is a work in progress, several of these datasets are now ready for transfer to CHRPC for inclusion in HEIS. The actual loading of data into HEIS is performed by CHPRC staff, so after the data are transferred from PNNL to CHPRC, it will be the responsibility of CHPRC to ensure that these data are loaded and made accessible. This document provides a status report on efforts to transfer physical and hydraulic property data from PNNL to CHPRC for incorporation into HEIS.

Rockhold, Mark L.; Middleton, Lisa A.; Cantrell, Kirk J.

2009-06-30T23:59:59.000Z

151

Hydrogen Properties  

Broader source: Energy.gov [DOE]

The atomic structure, physical and chemical properties, flammability and safety, fundamental gas laws, how pressure, temperature and mass flow are measured

152

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

153

PHYSICAL PROPERTIES, STAR FORMATION, AND ACTIVE GALACTIC NUCLEUS ACTIVITY IN BALMER BREAK GALAXIES AT 0 < z < 1  

SciTech Connect (OSTI)

We present a spectroscopic study with the derivation of the physical properties of 37 Balmer break galaxies, which have the necessary lines to locate them in star-forming-active galactic nuclei (AGNs) diagnostic diagrams. These galaxies span a redshift range from 0.045 to 0.93 and are somewhat less massive than similar samples of previous works. The studied sample has multiwavelength photometric data coverage from the ultraviolet to mid-infrared (MIR) Spitzer bands. We investigate the connection between star formation and AGN activity via optical, mass-excitation (MEx), and MIR diagnostic diagrams. Through optical diagrams, 31 (84%) star-forming galaxies, two (5%) composite galaxies, and three (8%) AGNs were classified, whereas from the MEx diagram only one galaxy was classified as AGN. A total of 19 galaxies have photometry available in all the IRAC/Spitzer bands. Of these, three AGN candidates were not classified as AGN in the optical diagrams, suggesting they are dusty/obscured AGNs, or that nuclear star formation has diluted their contributions. By fitting the spectral energy distribution of the galaxies, we derived the stellar masses, dust reddening E(B - V), ages, and UV star formation rates (SFRs). Furthermore, the relationship between SFR surface density ({Sigma}{sub SFR}) and stellar mass surface density per time unit ({Sigma}{sub M{sub */{tau}}}) as a function of redshift was investigated using the [O II] {lambda}3727, 3729, H{alpha} {lambda}6563 luminosities, which revealed that both quantities are larger for higher redshift galaxies. We also studied the SFR and specific SFR (SSFR) versus stellar mass and color relations, with the more massive galaxies having higher SFR values but lower SSFR values than less massive galaxies. These results are consistent with previous ones showing that, at a given mass, high-redshift galaxies have on average larger SFR and SSFR values than low-redshift galaxies. Finally, bluer galaxies have larger SSFR values than redder galaxies and for a given color the SSFR is larger for higher redshift galaxies.

Diaz Tello, J.; Donzelli, C. [IATE, Observatorio Astronomico de Cordoba, Universidad Nacional de Cordoba (Argentina); Padilla, N. [Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile (Chile); Fujishiro, N.; Yoshikawa, T. [Koyama Astronomical Observatory, Kyoto Sangyo University (Japan); Hanami, H. [Physics Section, Iwate University (Japan); Hatsukade, B., E-mail: jdiazt@oac.uncor.edu [Department of Astronomy, Kyoto University (Japan)

2013-07-01T23:59:59.000Z

154

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

155

Chemical and Physical Properties of Breakfast Cereals and Snacks Made from Specialty Sorghums and Sorghum Bran Using Twin Screw Extruder  

E-Print Network [OSTI]

and on in vitro starch digestibility of sorghum based cereals and snacks were observed. Gluten free and gluten containing breakfast cereal and snacks were developed with different physical, chemical and sensory characteristic. By increasing the sorghum and bran...

Asif, Muhammad

2012-02-14T23:59:59.000Z

156

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

157

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.

158

The nano-mechanical morphology of shale  

Science Journals Connector (OSTI)

Shale, the sealing formations in most hydrocarbon reservoirs, is made of highly compacted clay particles of sub-micrometer size, nanometric porosity and different mineralogy. In this paper, we propose and validate a technique to identify the nano-mechanical morphology of such a nanocomposite material. In particular, by means of a massive nanoindentation campaign at two different scales on a large range of shale materials, we show that the highly compacted plate- or sheet-like clay particles have a distinct nano-mechanical morphology with no privileged orientation of the particle-to-particle contact surface, as evidenced by a mechanical percolation threshold of ?0?0.5. Furthermore, the nanoindentation results provide strong evidence that the nano-mechanical elementary building block of shales is transversely isotropic in stiffness, and isotropic and frictionless in strength. These observations lead to a sphere-like mechanical morphology for visibly plate- or sheet-like clay particles. The contact forces between the sphere-like particles activate the intrinsicly anisotropic elastic properties within the clay particles and the cohesive bonds between the clay particles. The mechanical stiffness and strength properties of porous clay scale with the clay packing density toward a unique set of shale-invariant material properties. The determination of mechanical microstructure and invariant material properties are of great importance for the development of predictive microporomechanical models of the stiffness and strength properties of shale. The approach presented here also applies to other chemically and mechanically complex materials exhibiting nanogranular behavior.

Christopher Bobko; Franz-Josef Ulm

2008-01-01T23:59:59.000Z

159

Electrochimica Acta 50 (2005) 19731983 Preparation and the physical/electrochemical properties of a Pt/C  

E-Print Network [OSTI]

issues, such as the electrocatalytic activity of the anode and cathode and the essential properties activity, many catalytic materials have been investigated for PEFCs and it has been found that the sup and cathode of the PEFCs. Moreover, the higher electrocatalytic activity of Pt and its alloys can be achieved

Zhao, Tianshou

160

Chemical and physical properties of gas jets in comets: I. Monte Carlo model of an inner cometary coma  

Science Journals Connector (OSTI)

We describe a 3-dimensional, time-dependent Monte Carlo model developed to analyze the chemical and physical nature of a cometary gas coma. Our model includes the necessary physics and chemistry to recreate the conditions applicable to Comet HaleBopp when the comet was near 1 AU from the Sun. Two base models were designed and are described here. The first is an isotropic model that emits particles (parents of the observed gases) from the entire nucleus; the second is a jet model that ejects parent particles solely from discrete active areas on the surface of the comet nucleus, resulting in coma jets. The two models are combined to produce the final model, which is compared with observations. The physical processes incorporated in both base models include: (1) isotropic ejection of daughter molecules (the observed gases) in the parent's frame of reference, (2) solar radiation pressure, (3) solar insolation effects, (4) collisions of daughter products with other molecules in the coma, and (5) acceleration of the gas in the coma. The observed daughter molecules are produced when a parent decays, which is represented by either an exponential decay distribution (photodissociation of the parent gas) or a triangular distribution (production from a grain extended source). Application of this model to the analysis the OH, C2 and CN gas jets observed in the coma of Comet HaleBopp is the focus of the accompanying paper [Lederer, S.M., Campins, H., Osip, D.J., 2008. Icarus, in press (this issue)].

S.M. Lederer; H. Campins; D.J. Osip

2009-01-01T23:59:59.000Z

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.


161

LANL | Physics | Nuclear Physics  

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

Leaders in nuclear physics Physics Division scientists and engineers play an important role in the Laboratory's Nuclear Physics program, funded by the Department of Energy's Office...

162

Influence of film thickness and In-doping on physical properties of CdS thin films  

Science Journals Connector (OSTI)

Abstract Polycrystalline CdS thin films were deposited on glass substrates by close spaced sublimation technique. Samples of various thicknesses, ranging from 250 to 940nm were obtained. The optical and electrical properties of pure CdS thin films were studied as a function of film thickness. The resistivity of as-deposited CdS films was in the order of 106108?cm, depending upon the film thickness. In the high temperature region, carriers are transported over the grain boundaries by thermionic emission. Resistivity was reduced to the order of 10?2101?cm by the thermally diffusion of indium into CdS films, without changing the type of carriers. The annealing temperature dependence of structural, optical and electrical properties of In-doped CdS films showed that the samples annealed at 350C and 400C exhibited better results.

Sajid Butt; Nazar Abbas Shah; Adnan Nazir; Zulfiqar Ali; Asghri Maqsood

2014-01-01T23:59:59.000Z

163

Physical properties of highly oriented spray-deposited fluorine-doped tin dioxide films as transparent conductor  

Science Journals Connector (OSTI)

Heavily fluorine-doped tin dioxide films were deposited by spray pyrolysis using a high precursor concentration. The effect of film thickness was studied in the range 801230nm. The films were polycrystalline and preferentially oriented along [200]. The grain size, carrier mobility ?, carrier concentration N and resistivity reached ?230nm, 35cm2/Vs, 61020cm?3 and 310?4?cm, respectively, for 1000nm films. An unusual direct and linear ?N dependence revealed the importance of the structural properties. The 1000nm thick films possessed an average visible transmittance ?81% and a reflectance ?66% at 2500nm. The electro-optical properties revealed their excellent quality as a TCO material.

Chitra Agashe; J. Hpkes; G. Schpe; M. Berginski

2009-01-01T23:59:59.000Z

164

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

165

New non-stick expoxy-silicone water-based coatings part 1: Physical and surface properties  

SciTech Connect (OSTI)

In search for tomorrow`s technology for water-based coating, Decora Manufacturing and The Hebrew University of Jerusalem, have initiated an intensive research program for designing, developing and manufacturing new coatings based on cross-linked, room temperature-cured silicone-expoxy resins. The new water-borne coatings have most exciting characteristics such as: non-stick properties, effective release, high lubricity, corrosion protection and abrasion resistance. The coatings are environmentally-friendly and easy to use. These coatings are ideal for marine, agricultural, industrial and maintenance applications. This paper brings quantitative measurements related to the dispersion technology (particle size, stability, shelf-life), to the non-stick properties (deicing, low surface energy, easy-release and non-stick), lubricity, adhesion to substrates, viscosity, dynamic and static friction coefficients and environmental impact (low VOC, non-toxicity, low-leaching). The coating was tested in various industrial coating systems and was found to exhibit excellent non-stick and release properties. Special attention was given to Zebra Mussels, Quagga Mussels and other bacterial and algeal bioforms. The coating proved to be efficient as foul-release coating with very low biofouling adhesion. The low adhesion applied to many other substances in which foul-release means easy-clean and low-wear.

Garti, N. [Hebrew Univ. of Jerusalem (Israel); Smith, J. [Decora Manufacturing, Fort Edward, NY (United States)

1995-06-01T23:59:59.000Z

166

Effect of low and high storage temperatures on head space gas concentrations and physical properties of wood pellets  

SciTech Connect (OSTI)

Headspace gas concentrations and wood pellet properties were studied in sealed glass canisters at 540 degrees C storage temperatures. CO2 and CO concentrations at 5, 10, 20 and 40 degrees C at the end of 2328 days of storage were 1600 and 200, 4700 and 1200, and 31 200 and 15 800 parts per million by volume (ppmv) respectively. Corresponding O2 concentration was about 1949, 1920, 180 and 207% respectively. Non-linear regression equations adequately described the gas concentrations in the storage container as a function of time. Safe level estimation functions developed were linear for O2 and logarithmic for CO and CO2 concentrations. Measured pellet properties moisture, length, diameter, unit, bulk and tapped density, durability, calorific value, ash content and per cent fines were in the range of 46502%, 1415 mm, 6465 mm, 11251175 kg m-3, 750770 kg m-3, 825840 kg m-3, 7374%, 18321878 MJ kg-1, 065074% and 013015%. Durability values of pellets decreased by 13% at 40 degrees C storage temperature and other properties changed marginally.

Jaya Shankar Tumuluru; Shahab Sokhansanj; C. Jim Lim; Tony Bi; Xingya Kuang; Staffan Melin

2013-11-01T23:59:59.000Z

167

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

168

Physics | More Science | ORNL  

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

Physics Physics ORNL Physics More Science Home | Science & Discovery | More Science | Physics SHARE Physics Bottom view of the 25 million volt tandem electrostatic accelerator of the Holifield Heavy Ion Research Facility. Physics researchers at ORNL seek to answer fascinating questions about our Universe: What are the nuclear reactions that drive stellar explosions? How does nuclear matter organize itself? What are the properties of nuclear interactions? Why is there more matter than antimatter in the universe? Is the neutrino its own antiparticle? What are the properties of matter that existed just after the Big Bang? Our research staff address these questions by developing experimental techniques and detector systems, performing experiments at national and

169

Automated Morphology Analysis of Nanoparticles  

E-Print Network [OSTI]

of this dissertation is to develop automated morphology analysis methods. Morphology analysis is comprised of three tasks: separate individual particles from an agglomerate of overlapping nano-objects (image segmentation); infer the particle's missing contours (shape...

Park, Chiwoo

2012-10-19T23:59:59.000Z

170

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

171

Effect of freezethaw cycles on the strength and physical properties of cement-stabilised soil containing recycled bassanite and coal ash  

Science Journals Connector (OSTI)

Abstract Earth materials deteriorate physically under freezethaw cycling. It is thus important to determine how freezethaw cycling affects their properties of new man-made materials in areas experiencing seasonal frost. The effect of variable freezethaw cycling on the durability of cement-stabilised soils containing bassanite and coal ash was quantified to promote the use of bassanite in earthwork project in seasonal frost areas. For this purpose, very soft clay was stabilised with 5% cement content by weight of dry soil, and bassanite and coal ash were mixed with it in differing proportions. These stabilised soil samples were subjected to differing numbers of freezethaw cycles (up to five cycles), after curing for 28days. Unconfined compressive strength and several physical properties were investigated after freezethaw cycling. The results show that the addition of both bassanite and coal ash improves the strength and durability of stabilised soils significantly, whereas the addition of coal ash alone has a negative effect on strength improvement. Unconfined compressive strength increases with increased bassanite and coal ash contents. With respect to freezing and thawing durability, the first or second cycles of freezethaw action markedly decrease the unconfined compressive strength of both treated and untreated cement-stabilised soils, but further cycles have little additional influence. The use of both additives improves durability, and retains 6585% strength compared to corresponding non-frozen stabilised soils; if either additive is used, the strength is 5565%; and if no additives are used, about 50%. The effects of freezethaw cycling on water content and dry density are negligible compared to those of additive contents. Volume after freezing increased slightly with increase in the number of freezethaw cycles, although volume after thawing fell slightly and reached minimum at the first thawing process.

Toshihide Shibi; Takeshi Kamei

2014-01-01T23:59:59.000Z

172

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

173

The Influence of Fog and Airmass History on Aerosol Optical, Physical and Chemical Properties at Pt. Reyes National Seashore  

SciTech Connect (OSTI)

This paper presents an analysis of the aerosol chemical composition, optical properties and size distributions for a range of conditions encountered during a field measurement campaign conducted between July 7-29, 2005 at Point Reyes National Seashore, north of San Francisco, CA. Observations are partitioned into one-hour periods when conditions were clear or foggy to identify evidence of cloud processing of aerosols. During the first half of the campaign (July 7-18), conditions at the site were largely maritime. However flow during the second half of the campaigns (July 18-29) was influenced by a thermal trough that added a cyclonic twist to the incoming marine air, bringing it from the south with a more extensive over-land trajectory. Neither flow regime was associated with air coming from the San Francisco Bay area to the south. Measurements by an Aerodyne aerosol mass spectrometer (AMS) of the equivalent molar ratio of ammonium to the sum of sulfate, nitrate and chloride made before the onset of the thermal trough on July 18th were associated with acidic or near-neutral particles. Measurements made after July 18th appear to have excess ammonium. The AMS measurements of mass loading were an order of magnitude less than those reported by a nearby IMPROVE station. However, the AMS measures only non-refractory particles between 0.1 m and 1 m, which would not include sea salt. In contrast, the IMPROVE station employs filter-based techniques to measure mass for all particles < 2.5 m. Assuming chlorine is associated with large sea salt particles at Pt. Reyes and removing this value from the IMPROVE data resulted in good agreement in the total mass fraction between these two techniques,, indicating the importance of sea salt mass in particles greater than 1 m. Model calculations of the equilibrium gas-phase mixing ratio of NH3 suggest very high values which we attribute to agricultural practices within the park. Reported as an incidental finding is evidence for the cloud droplet activation of large particles (diameter >0.2 mm) with a corresponding reduction in the single scattering albedo of the non-activated particles, followed by a return in the particle size spectrum to the pre-fog conditions immediately afterwards.

Berkowitz, Carl M.; Berg, Larry K.; Yu, Xiao-Ying; Alexander, M. L.; Laskin, Alexander; Zaveri, Rahul A.; Jobson, Bertram Thomas; Andrews, Elisabeth; Ogren, John A.

2011-04-05T23:59:59.000Z

174

Physics Folklore  

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

Physics Folklore Physics Folklore By Lynne Zielinski       Sometime after World War II physicists began to change their way of giving names to theoretical ideas. Before then, new ideas were given titles such as "special relativity theory" or "neutrons." A precursor of the new kinds of names came in 1953 when Murray Gell-Mann and Kazuhiko Hishijima decided to name one of the properties of subatomic particles "strangeness." Gell-Mann accelerated the trend in 1961 by calling his group-theoretic way of explaining the properties of particles "The Eightfold Way." Gell-Mann's crazy names finally reached the consciousness of the general public in 1964 when he described the particles involved in the next stage of his thinking as "quarks." p. 508, source B

175

Nuclear Physics with trapped  

E-Print Network [OSTI]

Nuclear Physics with trapped atoms and ions #12;2/2/2013Dan Melconian #12;2/2/2013Dan Melconian Outline · Scope and applications of nuclear physics precision frontier compliments LHC properties and aquifers in the Sahara #12;2/2/2013Dan Melconian What is Nuclear Physics? · Began with the study

Boas, Harold P.

176

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

177

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

178

Oak Ridge National Laboratory - Physical Sciences Directorate  

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

Physics The Physics Division of Oak Ridge National Laboratory is concerned primarily with studies of the fundamental properties of matter at the atomic, nuclear, and subnuclear...

179

PHYSICAL PROPERTIES OF METALS1  

Science Journals Connector (OSTI)

... the application of pressing and shaping force is afforded by the processes in use for "teapot spinning,"i.e. the production of a Britannia-metal ... spinning,"i.e. the production of a Britannia-metal teapot by a process technically termed spinning. The alloy being rolled into sheets of convenient ...

1878-05-16T23:59:59.000Z

180

Parameter-Free Structure?Property Correlation via Progressive Reaction Posets for Substituted Benzenes  

Science Journals Connector (OSTI)

CRC?Handbook?of?Chemistry?and?Physics, ... Physical?Properties?of?Chemical?Compounds; ... CRC?of?Chemistry?and?Physic, ...

T. Ivanciuc; D. J. Klein

2004-02-06T23:59:59.000Z

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

Review of Particle Physics  

Science Journals Connector (OSTI)

This biennial Review summarizes much of Particle Physics. Using data from previous editions, plus 1600 new measurements from 550 papers, we list, evaluate, and average measured properties of gauge bosons, leptons...

1998-01-01T23:59:59.000Z

182

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.

183

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.

184

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

185

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 Nuclaires et de Sciences de la Matire (CSNSM), CNRS/IN2P3, Universit Paris Sud 11, UMR 8609, Btiment 104, F-91405 Orsay Campus (France)

2014-05-09T23:59:59.000Z

186

THE BOLOCAM GALACTIC PLANE SURVEY. III. CHARACTERIZING PHYSICAL PROPERTIES OF MASSIVE STAR-FORMING REGIONS IN THE GEMINI OB1 MOLECULAR CLOUD  

SciTech Connect (OSTI)

We present the 1.1 mm Bolocam Galactic Plane Survey (BGPS) observations of the Gemini OB1 molecular cloud complex, and targeted NH{sub 3} observations of the BGPS sources. When paired with molecular spectroscopy of a dense gas tracer, millimeter observations yield physical properties such as masses, radii, mean densities, kinetic temperatures, and line widths. We detect 34 distinct BGPS sources above 5{sigma} = 0.37 Jy beam{sup -1} with corresponding 5{sigma} detections in the NH{sub 3}(1,1) transition. Eight of the objects show water maser emission (20%). We find a mean millimeter source FWHM of 1.12 pc and a mean gas kinetic temperature of 20 K for the sample of 34 BGPS sources with detections in the NH{sub 3}(1,1) line. The observed NH{sub 3} line widths are dominated by non-thermal motions, typically found to be a few times the thermal sound speed expected for the derived kinetic temperature. We calculate the mass for each source from the millimeter flux assuming the sources are isothermal and find a mean isothermal mass within a 120'' aperture of 230 {+-} 180 M{sub sun}. We find a total mass of 8400 M{sub sun} for all BGPS sources in the Gemini OB1 molecular cloud, representing 6.5% of the cloud mass. By comparing the millimeter isothermal mass to the virial mass calculated from the NH{sub 3} line widths within a radius equal to the millimeter source size, we find a mean virial parameter (M{sub vir}/M {sub iso}) of 1.0 {+-} 0.9 for the sample. We find mean values for the distributions of column densities of 1.0 x 10{sup 22} cm{sup -2} for H{sub 2}, and 3.0 x 10{sup 14} cm{sup -2} for NH{sub 3}, giving a mean NH{sub 3} abundance of 3.0 x 10{sup -8} relative to H{sub 2}. We find volume-averaged densities on the order of 10{sup 3}-10{sup 4} cm{sup -3}. The sizes and densities suggest that in the Gem OB1 region the BGPS is detecting the clumps from which stellar clusters form, rather than smaller, higher density cores where single stars or small multiple systems form.

Dunham, Miranda K.; Evans, Neal J.; Harvey, Paul; Merello, Manuel [Department of Astronomy, The University of Texas at Austin, 1 University Station C1400, Austin, TX 78712-0259 (United States); Rosolowsky, Erik [University of British Columbia, Okanagan, 3333 University Way, Kelowna BC V1V 1V7 (Canada); Cyganowski, Claudia J. [Department of Astronomy, University of Wisconsin, Madison, WI 53706 (United States); Aguirre, James [Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104 (United States); Bally, John; Battersby, Cara; Ginsburg, Adam; Glenn, Jason; Stringfellow, Guy S. [CASA, University of Colorado, 389-UCB, Boulder, CO 80309 (United States); Bradley, Eric Todd [Department of Physics, University of Central Florida, 4000 Central Florida Boulevard, Orlando, FL 32816-2385 (United States); Dowell, Darren [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91104 (United States); Drosback, Meredith [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904 (United States); Schlingman, Wayne; Shirley, Yancy L. [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Walawender, Josh [Institute for Astronomy, University of Hawaii, 640 N. Aohoku Place, Hilo, HI 96720 (United States); Williams, Jonathan P., E-mail: nordhaus@astro.as.utexas.ed [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)

2010-07-10T23:59:59.000Z

187

Determination of monolayer-protected gold nanoparticle ligandshell 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

188

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

189

The Physical Properties of the Atmosphere in the New Hadley Centre Global Environmental Model (HadGEM1). Part I: Model Description and Global Climatology  

Science Journals Connector (OSTI)

The atmospheric component of the new Hadley Centre Global Environmental Model (HadGEM1) is described and an assessment of its mean climatology presented. HadGEM1 includes substantially improved representations of physical processes, increased ...

G. M. Martin; M. A. Ringer; V. D. Pope; A. Jones; C. Dearden; T. J. Hinton

2006-04-01T23:59:59.000Z

190

Influence of alkaline (pH 8.312.0) and saline solutions on chemical, mineralogical and physical properties of two different bentonites  

Science Journals Connector (OSTI)

...are intended to be used as buffer and backfill materials. Construction of...Physical Study of Potential Buffer and Backfill Materials from AMB Test Package...M.J. , editor (1987) A Handbook of Determinative Methods in...

T. Heikola; S. Kumpulainen; U. Vuorinen; L. Kiviranta; P. Korkeakoski

191

@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

192

Fish Gelatin-Nanoclay Composite Film. Mechanical and Physical Properties, Effect of Enzyme Cross-Linking, and as a Functional Film Layer.  

E-Print Network [OSTI]

??The effect of clay content, homogenization RPM, and pH on the mechanical and barrier properties of fish gelatin/nanoclay composite films was investigated. The addition of (more)

Bae, Hojae

2007-01-01T23:59:59.000Z

193

The Importance of Chemical and Physical Properties of New Agrochemicals for Their Sorption to Bulk Soil Material and Dissolved Organic Carbon  

Science Journals Connector (OSTI)

The increasing number of new pesticides raises the problem of predicting the sorption behaviour for many compounds with different properties. In order to reduce the analytical expenditure models are used to pr...

Helmut Deschauer; Ingrid Kgel-Knabner

1990-01-01T23:59:59.000Z

194

Synergistic Effect of Nano-TiO2 and Nanoclay on the Ultraviolet Degradation and Physical Properties of Wood Polymer Nanocomposites  

Science Journals Connector (OSTI)

(7) The combination of nanoclay with other metal nanoparticles will influence the properties of the composites considerably, as reported by Laachachia et al. while studying the properties of poly(methyl methacrylate) (PMMA) nanocomposites prepared with TiO2 and nanoclay. ... (30) Mina et al. studied the XRD pattern of a polypropylene/titanium dioxide composite and reported a similar increase in the peak intensity of TiO2 in the composites. ...

Ankita Hazarika; Tarun K. Maji

2013-08-26T23:59:59.000Z

195

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

196

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.

197

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.

198

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.

199

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

200

LANL | Physics | High Energy Physics  

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

high energy physics frontiers as defined by the Department of Energy's Office of High Energy Physics. Exploring the intensity frontier On the trail of one of the greatest...

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

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

202

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

203

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

204

PHYSICAL REVIEW B 83, 125201 (2011) Compositional dependence of structural and electronic properties of Cu2ZnSn(S,Se)4 alloys  

E-Print Network [OSTI]

on the efficiency of CZTSSe solar cells and explain the high efficiency of the cells with high Se content. DOI: 10: Is there a similar limit to the efficiency as in Cu(In,Ga)Se2 cells, and why is the current highest-efficiency solar properties of Cu2ZnSn(S,Se)4 alloys for thin film solar cells Shiyou Chen,1,2 Aron Walsh,3 Ji-Hui Yang,1 X. G

Gong, Xingao

205

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

206

8.10 Physical Resources Introduction  

E-Print Network [OSTI]

8.10 Physical Resources Introduction Institutions are often substantial land and property owners's management of its physical resources. Some of this information is required to be published under and Recycling Policy Sustainable Development Carbon Management Plan #12;

Mottram, Nigel

207

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.

208

Physics Division: Subatomic Physics Group  

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

Subatomic Physics Subatomic Physics Physics home » Subatomic Physics Site Home About Us Groups Applied Modern Physics, P-21 Neutron Science and Technology, P-23 Plasma Physics, P-24 Subatomic Physics, P-25 CONTACTS Group Leader Jon Kapustinsky (Acting) Deputy Group Leader Andy Saunders Office Administration Irene Martinez Miquela Sanchez Group Office (505) 667-6941 Physics Links Jobs in Physics Human Resources Working at Los Alamos Los Alamos resources Who we are, what we do We conduct basic research in nuclear and particle physics, applying this expertise to solve problems of national importance. By pushing the limits of our understanding of the smallest building blocks of matter through diverse experiments probing aspects of subatomic reactions, we aim to provide a more thorough understanding of the basic

209

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

210

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

211

Morphological, rheological and electrochemical studies of Poly(ethylene  

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

Morphological, rheological and electrochemical studies of Poly(ethylene Morphological, rheological and electrochemical studies of Poly(ethylene oxide) electrolytes containing fumed silica nanoparticles Title Morphological, rheological and electrochemical studies of Poly(ethylene oxide) electrolytes containing fumed silica nanoparticles Publication Type Journal Article Year of Publication 2004 Authors Xie, Jiangbing, Robert G. Duan, Yong Bong Han, and John B. Kerr Journal Solid State Ionics Volume 175 Pagination 755-758 Keywords composite polymer electrolytes, nanoparticles, poly(ethylene oxide), rheology Abstract In this paper, the rheology and crystallization of composite Poly(ethylene oxide) (PEO) electrolytes were studied by dynamic mechanical analysis, DSC and polarized light microscopy. The effects of fumed silica nanoparticles on the conductivities of the polymer electrolytes at temperatures above and below their melting points were measured and related to their rheology and crystallization behavior, respectively. The electrolyte/electrode interfacial properties and cycling performances of the composite polymer electrolytes in Li/Li cells are also discussed. The measured electrochemical properties were found to depend heavily on the operational environments and sample processing history.

212

Methods of Experimental Physics. vol. 6, Solid State Physics. Part A: Preparation, structure, mechanical and thermal properties. xvi + 466 pp. $11.80. Part B: Electrical, magnetic, and optical properties. xiv + 416 pp. $11. K. Lark-Horovitz and Vivian A. Johnston, Eds. Academic Press, New York, 1959. Illus  

Science Journals Connector (OSTI)

...structure, mechanical and thermal properties. xvi + 466 pp...struCture, mechanical and thermal properties. xvi + 466 pp...the kingdoms of the western Sudan is quite extensive, and A...adequate account of the eastern Sudan, but Davidson adds an interesting...

Richard J. Weiss

1960-02-19T23:59:59.000Z

213

Alexey Anisyonkov Budker Institute of Nuclear Physics  

E-Print Network [OSTI]

Alexey Anisyonkov Budker Institute of Nuclear Physics (BINP, Novosibirsk) ATLAS Grid Information policy List of Activities and its properties (Functional Tests, re(Processing), Data distribution, ..

214

Brookhaven High Energy Physics  

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

High-Energy Physics High-Energy Physics High-energy physicists probe the properties and behavior of the most elementary particles in the universe. At the Alternating Gradient Synchrotron (AGS), they perform experiments of unique sensitivity using high-intensity, intermediate-energy beams. The AGS currently provides the world's most intense high-energy proton beam. It is also the world's most versatile accelerator, accelerating protons, polarized protons, and heavy ions to near the speed of light. Magnet system at Brookhaven used to measure the magnetic moment of the muon. Important discoveries in high-energy physics were made at the AGS within the last decade. An international collaboration, including key physicists from Brookhaven, performed a very high-precision measurement of a property

215

Planetary Physics  

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

Planetary Physics Some of the most intriguing NIF experiments test the physics believed to determine the structures of planets down to their cores, both in our solar system and...

216

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

217

Morphology of gravitationally lensed galaxies  

Science Journals Connector (OSTI)

The compound optical system formed by the Hubble Space Telescope and a 200 kpc diameter gravitational objective lens provides an unprecedented view of a distant star forming galaxy in the UV. We describe a high resolution reconstruction of the UV image of the high redshift galaxy behind the z=0.4 cluster 0024+1654. Using a simultaneous parametric solution for the source morphology and the gravitational lens mass distribution we have found a robust unique solution for the source galaxy: all five arcs map back through the lens to give the same source-plane image. The reconstructed image of this forming galaxy has 7 milliarcsec pixels or 200 pc resolution in two rest-frame bands: 1800200? and 3300400?.

Tony Tyson; Greg Kochanski; Ian DellAntonio

1997-01-01T23:59:59.000Z

218

Linking drainage front morphology with gaseous diffusion in unsaturated porous media: A lattice Boltzmann study  

E-Print Network [OSTI]

porous media is analyzed using the lattice Boltzmann method LBM . Flow regimes for immiscible in a physical experiment such as a micromodel. In this study, we use the lattice Boltzmann method LBMLinking drainage front morphology with gaseous diffusion in unsaturated porous media: A lattice

Shor, Leslie McCabe

219

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.

220

MEIOFAUNA MARINA Biodiversity, morphology and ecology  

E-Print Network [OSTI]

MEIOFAUNA MARINA Biodiversity, morphology and ecology of small benthic organisms 17 pfeil #12;MEIOFAUNA MARINA Biodiversity, morphology and ecology of small benthic organisms Volume 17·March 2009 pages-3937 E-mail: andreas.schmidt-rhaesa@uni-hamburg.de Pedro Martinez Arbízu Deutsches Zentrum für Marine

Ivanenko, Viatcheslav N.

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

7 April 2000 Z .Chemical Physics Letters 320 2000 365372  

E-Print Network [OSTI]

evaporation 2 or w xan arc discharge method 3 , quantitative studies have also been possible of the properties impurities but changes the morphology and the electric resistance of mats with increasing treatment time

Wang, Zhong L.

222

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,...

223

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

224

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 Gassmanns 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

225

Review of Particle Physics  

Science Journals Connector (OSTI)

This biennial review summarizes much of Particle Physics. Using data from previous editions, plus 1900 new measurements from 700 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. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review.

R. M. Barnett et al.

1996-07-01T23:59:59.000Z

226

RHIC | Spin Physics  

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

Spin Physics Spin Physics RHIC is the world's only machine capable of colliding high-energy beams of polarized protons, and is a unique tool for exploring the puzzle of the proton's 'missing' spin. In addition to colliding heavy ions, RHIC is able to collide single protons. While these collisions don't produce quark-gluon plasma, they're interesting to physicists for other reasons. Scientists want to know more about a property of particles called 'spin'. Spin is the direction a particle is spinning around an axis as it travels -- just like the Earth spins on its axis as it travels around the sun. Each proton has a specific spin, which helps give it a characteristic magnetic property. spin In this picture of a proton-proton collision, the spin of the particles is shown as arrows circling the spherical particles. The red and green

227

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

228

Structure and Properties of Nanoclay Reinforced Polymer Films, Fibers and Nonwovens.  

E-Print Network [OSTI]

??In this research, influence of different levels of Closite Na+ additives on the microstructure, morphology and mechanical properties of polymer products was studied. Importance was (more)

Hegde, Raghavendra Ratnakar

2009-01-01T23:59:59.000Z

229

REPRESENTING AEROSOL DYNAMICS AND PROPERTIES IN ATMOSPHERIC CHEMICAL TRANSPORT MODELS BY THE METHOD OF MOMENTS  

E-Print Network [OSTI]

, troposphere · Modification of cloud physical properties - hydrology and climate · Modification of fog, cloud

Schwartz, Stephen E.

230

NETL: Available NETL Property  

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

Available NETL Property Available NETL Property Solicitations & Business Opportunities Available NETL Property Buying Property from NETL NETL offers surplus equipment for sale to the public and provides opportunities for colleges and universities to acquire laboratory equipment. It also provides gifts of math and science equipment to eligible recipients in the field of education. Personal Property Sales Program The following surplus personal property is available for sale to the public: Property Sales Laboratory Equipment Donation Grant Program (LEDP) (formerly known as EnergyRelated Laboratory Equipment (ERLE) Grant Program) NETL's ERLE Coordinator is Frances M. Wright This program permits universities, colleges, and other non-profit educational institutions to acquire used energy-related laboratory equipment. All non-profit educational institutions of higher learning that are interested in establishing or upgrading energy-oriented educational programs in life, physical, and environmental sciences or in engineering are eligible. The website can be accessed at: http://www.osti.gov/ledp/

231

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-PIs.

Fischer, John, E.

2009-07-24T23:59:59.000Z

232

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...

233

Flavor Physics  

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

Flavor Physics and CP Violation Conference, Bled, 2007 1 The Search for e Oscillations at MiniBooNE H. A. Tanaka, for the MiniBooNE collaboration Department of...

234

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...

235

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...

236

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...

237

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

238

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.

239

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

240

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

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

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

242

Testing Subgroup Workshop on Critical Property Needs  

Broader source: Energy.gov [DOE]

Objectives: Develop an action plan that details the necessary tests to measure and compare the physical properties of metallic materials relevant to high pressure hydrogen service

243

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.

244

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

245

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

246

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

247

Cellulose hydrolysis in evolving substrate morphologies III: Timescale analysis  

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

Hydrolysis Hydrolysis in Evolving Substrate Morphologies III: Time-Scale Analysis Wen Zhou, 1,2 Ying Xu, 1,2 Heinz-Bernd Schu ¨ ttler 3 1 Computational Systems Biology Lab, Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens, Georgia; telephone: 706-542-9779; fax: 706-542-9751; e-mail: xyn@bmb.uga.edu 2 BioEnergy Science Center (BESC), Department of Energy (DOE), Oak Ridge, Tennessee 3 Department of Physics and Astronomy, University of Georgia, Athens, Georgia; telephone: 706-542-3886; fax: 706-542-2492; e-mail: hbs@physast.uga.edu Received 11 December 2009; revision received 4 May 2010; accepted 10 May 2010 Published online 1 June 2010 in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/bit.22814 ABSTRACT: We present a time-scale analysis for the enzy- matic hydrolysis of solid cellulosic substrates,

248

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network [OSTI]

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook Edition 1.4 2007/2008 Contents 1 Introduction 7 1.1 Physics at Lancaster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2 Organisation of Physics Teaching 15 2.1 Departmental Committees

Low, Robert

249

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network [OSTI]

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook For 3rd & 4th Year Students on Old . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.2 Points of contact within the Physics Department . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2 Physics at Lancaster 18 2.1 Pastoral Care and Development

Low, Robert

250

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

251

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

252

Physics Handbook  

Science Journals Connector (OSTI)

... mechanics, acoustics, optics, heat, electricity, magnetism and electro-magnetism, atomic and nuclear physics, and strength of materials, 120 to 128. Decimal numbers denote the sections and ... they should be recommended to use it with care and only in conjunction with other handbooks and encyclopaedias. The trouble is that too much has been attempted-a dictionary, ...

S. WEINTROUB

1968-10-19T23:59:59.000Z

253

Radio-frequency Ar plasma treatment on muga silk fiber: correlation between physicochemical and surface morphology  

Science Journals Connector (OSTI)

Radio-frequency (RF) Ar plasma treatment is carried out on natural muga silk fibers in a capacitively coupled plasma reactor. The physical and thermal properties of the muga fibers are investigated at an RF power...

Dolly Gogoi; Joyanti Chutia

2012-11-01T23:59:59.000Z

254

2014 Headquarters Facilities Master Security Plan- Chapter 1, Physical Security  

Broader source: Energy.gov [DOE]

2014 Headquarters Facilities Master Security Plan - Chapter 1, Physical Security Describes DOE Headquarters Physical Security procedures related to badges, inspections, access controls, visitor controls, and removal of government property.

255

Metals on graphene: correlation between adatom adsorption behavior and growth morphology  

SciTech Connect (OSTI)

We present a systematic study of metal adatom adsorption on graphene by ab initio calculations. The calculations cover alkali metals, sp-simple metals, 3d and group 10 transition metals, noble metals, as well as rare earth metals. The correlation between the adatom adsorption properties and the growth morphology of the metals on graphene is also investigated. We show that the growth morphology is related to the ratio of the metal adsorption energy to its bulk cohesive energy (E(a)/E(c)) and the diffusion barrier (?E) of the metal adatom on graphene. Charge transfer, electric dipole and magnetic moments, and graphene lattice distortion induced by metal adsorption would also affect the growth morphologies of the metal islands. We also show that most of the metal nanostructures on graphene would be thermally stable against coarsening.

Liu, Xiaojie; Wang, Cai-Zhuang; Hupalo, Myron; Lu, Wencai; Tringides, Michael C.; Yao, Yongxin; Ho, Kai-Ming

2012-05-19T23:59:59.000Z

256

Brookhaven Condensed Matter Physics  

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

Condensed Matter Physics Condensed Matter Physics Condensed matter physicists study the properties of bulk matter-solids and liquids-as well as the properties exhibited at surfaces and interfaces, with a view to obtaining a fundamental understanding of the unusual properties that materials can exhibit. These problems are some of the most challenging in physics today, but have the huge pay-off in that such an understanding may ultimately lead to improved materials for use in applications as diverse as computing, memory storage, electric motors, and energy storage and transport. At Brookhaven Lab, this work includes both experimental and theoretical studies. Much of the experimental work carried out today uses the National Synchrotron Light Source (NSLS, shown at right)-one of the premiere synchrotron light sources of the last two decades. Commissioned in the 1980s, the NSLS is host to more than 2,200 users per year and produces copious amounts of light, from the infrared to the ultraviolet to the x-ray. By using this light as a probe, scientists can learn about the arrangement of the atoms and electrons in the materials and how they behave under various conditions. Among other projects, BNL scientists have played leading roles in the development and application of resonant and inelastic x-ray scattering techniques to the study of magnetic and other materials, have pioneered the use of photoemission techniques (based on the photoelectric effect that Einstein first understood 100 years ago) for looking at electronic and magnetic materials, and have carried out some of the seminal experiments to understand the atomic and magnetic structure at surfaces.

257

Physics of nuclear reactor safety  

Science Journals Connector (OSTI)

Provides a concise review of the physical aspects of safety of nuclear fission reactors. It covers the developments of roughly the last decade. The introductory chapter contains an analysis of the changes in safety philosophy that are characteristic of the last decade and that have given rise to an increased importance of physical aspects because of the emphasis on passive or natural safety. The second chapter focuses on the basics of reactor safety, identifying the main risk sources and the main principles for a safe design. The third chapter concerns a systematic treatment of the physical processes that are fundamental for the properties of fission chain reacting processes and the control of those processes. Because of the rather specialized nature of the field of reactor physics, each paragraph contains a very concise description of the theory of the phenomenon under consideration, before presenting a review of the developments. Chapter 4 contains a short review of the thermal aspects of reactor safety, restricted to those aspects that are characteristic of the nuclear reactor field, because thermal hydraulics of fission reactors is not principally different from that of other physical systems. In chapter 5 the consequences of the physics treated in the preceding chapters for the dynamics and safety of actual reactors are reviewed. The systematics of the treatment is mainly based on a division of reactors into three categories according to the type of coolant, which to a large extent determines the safety properties of the reactors. The last chapter contains a physical analysis of the Chernobyl accident that occurred in 1986. The reason for an attempt to give a review of this accident, as complete as possible within the space limits set by the editors, is twofold: the Chernobyl accident is the most severe accident in history and physical properties of the reactor played a decisive role, thereby serving as an illustration of the material of the preceding chapters.

H van Dam

1992-01-01T23:59:59.000Z

258

Structure and properties of polypropylene-nanoclay composites  

Science Journals Connector (OSTI)

The structure, morphology and mechanical properties of polypropylene-nanoclay composites containing 1 to15wt.% nanoclay was investigated. Combination of wide-angle x ... for samples with up to 2wt.% nanoclay ad...

Raghavendra R. Hegde; Gajanan S. Bhat; Joseph E. Spruiell

2013-11-01T23:59:59.000Z

259

CDF Top Physics  

DOE R&D Accomplishments [OSTI]

The authors present the latest results about top physics obtained by the CDF experiment at the Fermilab Tevatron collider. The data sample used for these analysis (about 110 pb{sup{minus}1}) represents almost the entire statistics collected by CDF during four years (1992--95) of data taking. This large data size has allowed detailed studies of top production and decay properties. The results discussed here include the determination of the top quark mass, the measurement of the production cross section, the study of the kinematics of the top events and a look at top decays.

Tartarelli, G. F.; CDF Collaboration

1996-05-00T23:59:59.000Z

260

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

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

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

262

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

263

Of Physics & Astronomy. MEDICAL PHYSICS  

E-Print Network [OSTI]

, Department of Cardiovascular Science: Academic contact: Dr John Fenner, O-floor, Room OU142 (Hallamshire of the University, and 0114 2713687 from outside, email j.w.fenner@sheffield.ac.uk Medical Physics office contact JWF - Dr John Fenner, Undergrad course director, RHH, O floor, OU142, Tel x 13687, j.w.fenner

Crowther, Paul

264

The physics of the ? lepton  

Science Journals Connector (OSTI)

A comprehensive review of the status of ?-lepton physics is presented. We include the knowledge on the properties of the tau, the decay branching fractions and tests of the standard model. Discussions of possible puzzles and an indication of the future possibilities in this field are a lso presented.

B.C. Barish; R. Stroynowski

1988-01-01T23:59:59.000Z

265

Top Physics at the LHC  

E-Print Network [OSTI]

The LHC will be a top quark factory. In this note, the central role of the top quark for LHC physics will be discussed, and an overview will be given of the studies of top quark properties in preparation, with an emphasis on the systematic uncertainties that will dominate most measurements.

P. de Jong

2009-02-27T23:59:59.000Z

266

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

267

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

268

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

269

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

270

GROSS MORPHOLOGY AND ULTRASTRUCTURE OF MYCOPLASMA GALLISEPTICUM  

Science Journals Connector (OSTI)

...of an electron microscope by Reagan, Brueckner, and Delaplane (1951), Reagan, Day...697-717. REAGAN, R. L., A. L. BRUECKNER, AND J. P. DELAPLANE. 1951. Morphological...R. L., W. E. DAY, AND A. L. BRUECKNER. 1953. Electron microscopy studies...

C. H. Domermuth; M. Nielsen; E. A. Freundt; A. Birch-Andersen

1964-11-01T23:59:59.000Z

271

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.

272

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.

273

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

274

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

275

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.

276

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

277

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

278

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

279

Physics Applications  

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

Applications Applications Technetium-99m radioisotope generator developed at Brookhaven. Numerous physics-related programs at Brookhaven have yielded major advances in medicine and various technologies. Brookhaven's nuclear medicine program, which began in the 1950s, uses the Brookhaven Linac Isotope Producer to make radioisotopes for nuclear medicine diagnostics and treatment throughout the world. Today, more than 85 percent of all imaging examinations worldwide use one of the radioisotopes developed at Brookhaven. At Brookhaven's Center for Translational Neuroimaging, researchers can peer into a living brain through the use of various imaging modalities, including positron emission tomography (PET), magnetic resonance imaging (MRI), and optical imaging. Such research has led to a new understanding of

280

Kaon physics  

E-Print Network [OSTI]

At present, the main topics addressed by kaon physics are the unitarity test of CKM matrix via precision measurements of the Cabibbo angle as well as precision tests of discrete symmetries: in particular, study of possible CPT violations in a model-independent way through the Bell-Steinberger relation, or through the measurement of charge asymmetries. Other interesting topics are related to the test of predictions from chiral perturbation theory. Also status and prospects of the $K^\\pm \\to \\pi^\\pm\

B. Sciascia

2006-10-14T23:59:59.000Z

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.


281

Brookhaven Physics: Into the Future  

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

Physics: Into the Future Physics: Into the Future To remain at the frontier of science, Brookhaven is continually evaluating its research programs and planning new or revised investigations in areas that the U.S. Department of Energy identifies as national science priorities and that make use of Brookhaven scientists' interests and strengths. STAR detector (L) and PHENIX detector After discovering quark-gluon plasma, physicists will proceed to measure details of its many intriguing characteristics and properties, and continue to investigate many other aspects of heavy ion physics and spin physics. To undertake these tasks, Brookhaven is planning to upgrade RHIC to RHIC-II by increasing the facility's luminosity, or collision rate, by a factor of ten, thereby increasing the rate of plasma production and the ability to

282

Physics Topics - MST - UW Plasma Physics  

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

Physics Topics UW Madison Madison Symmetric Torus Physics Topics MST HomeGraduate Student InformationLinksTourControl and Auxiliary SystemsPhysics TopicsDeviceResearch MissionMST...

283

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

284

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

285

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

286

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 AdLi Ni KUiitOithlAndrs Lirara--Noriega Kansas Un versity rnitho...

Rodriquez, Jessica

2010-11-18T23:59:59.000Z

287

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

288

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

289

CANDELS: THE CORRELATION BETWEEN GALAXY MORPHOLOGY AND STAR FORMATION ACTIVITY AT z {approx} 2  

SciTech Connect (OSTI)

We discuss the state of the assembly of the Hubble sequence in the mix of bright galaxies at redshift 1.4 < z {<=} 2.5 with a large sample of 1671 galaxies down to H{sub AB} {approx} 26, selected from the HST/ACS and WFC3 images of the GOODS-South field obtained as part of the GOODS and CANDELS observations. We investigate the relationship between the star formation properties and morphology using various parametric diagnostics, such as the Sersic light profile, Gini (G), M{sub 20}, concentration (C), asymmetry (A), and multiplicity ({Psi}) parameters. Our sample clearly separates into massive, red, and passive galaxies versus less massive, blue, and star-forming ones, and this dichotomy correlates very well with the galaxies' morphological properties. Star-forming galaxies show a broad variety of morphological features, including clumpy structures and bulges mixed with faint low surface brightness features, generally characterized by disky-type light profiles. Passively evolving galaxies, on the other hand, very often have compact light distribution and morphology typical of today's spheroidal systems. We also find that artificially redshifted local galaxies have a similar distribution with z {approx} 2 galaxies in a G-M{sub 20} plane. Visual inspection between the rest-frame optical and UV images show that there is a generally weak morphological k-correction for galaxies at z {approx} 2, but the comparison with non-parametric measures show that galaxies in the rest-frame UV are somewhat clumpier than rest-frame optical. Similar general trends are observed in the local universe among massive galaxies, suggesting that the backbone of the Hubble sequence was already in place at z {approx} 2.

Lee, Bomee; Giavalisco, Mauro; Williams, Christina C. [Department of Astronomy, University of Massachusetts, Amherst, MA 01003 (United States); Guo Yicheng; Faber, S. M. [University of California Observatories/Lick Observatory, University of California, Santa Cruz, CA 95064 (United States); Lotz, Jennifer; Ferguson, Henry C.; Koekemoer, Anton; Grogin, Norman [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Van der Wel, Arjen [Max-Planck Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany); Kocevski, Dale [Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States); Conselice, Christopher J. [University of Nottingham, School of Physics and Astronomy, Nottingham NG7 2Rd (United Kingdom); Wuyts, Stijn [Max-Planck Institut fuer Extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching (Germany); Dekel, Avishai [Racah Institute of Physics, The Hebrew University, Jerusalem 91904 (Israel); Kartaltepe, Jeyhan [NOAO-Tuscon, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Bell, Eric F., E-mail: bomee@astro.umass.edu [Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109 (United States)

2013-09-01T23:59:59.000Z

290

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

291

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

292

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

293

Chemical and physical properties of gas jets in comets: II. Modeling OH, CN and C2 jets in Comet C/1995 O1 (HaleBopp) one month after perihelion  

Science Journals Connector (OSTI)

We present an analysis of OH, CN, and C2 jets observed in Comet HaleBopp during April 2226, 1997. We conclude that an extended source, which peaks in productivity after a certain amount of time has passed after being released from the nucleus (8.5, 2.5, and 42.6 10 4 s , respectively) is responsible for the observed coma jet morphology in all three species. Sub-micron organic grains are the favored explanation for the extended source. Our models indicate that this extended source produces approximately 40% of the OH, 50% of the C2, and 75% of the CN. The balance for each species is created by a diffuse nuclear gas source. Compared with the nuclear gas source and normalized to the CN abundance, the composition of the extended source is depleted in OH by a factor of ?6, and depleted in C2 by a factor of ?2. The existence of anti-sunward jets do not require production of radicals throughout the cometary night. Instead, our model demonstrates that active areas exposed to near-twilight conditions throughout the comet's rotational period can produce the observed anti-sunward morphology.

S.M. Lederer; H. Campins; D.J. Osip

2009-01-01T23:59:59.000Z

294

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...

295

CANDELS OBSERVATIONS OF THE STRUCTURAL PROPERTIES OF CLUSTER GALAXIES AT z = 1.62  

SciTech Connect (OSTI)

We discuss the structural and morphological properties of galaxies in a z = 1.62 proto-cluster using near-IR imaging data from Hubble Space Telescope Wide Field Camera 3 data of the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS). The cluster galaxies exhibit a clear color-morphology relation: galaxies with colors of quiescent stellar populations generally have morphologies consistent with spheroids, and galaxies with colors consistent with ongoing star formation have disk-like and irregular morphologies. The size distribution of the quiescent cluster galaxies shows a deficit of compact ({approx}< 1 kpc), massive galaxies compared to CANDELS field galaxies at z = 1.6. As a result, the cluster quiescent galaxies have larger average effective sizes compared to field galaxies at fixed mass at greater than 90% significance. Combined with data from the literature, the size evolution of quiescent cluster galaxies is relatively slow from z {approx_equal} 1.6 to the present, growing as (1 + z){sup -0.6{+-}0.1}. If this result is generalizable, then it implies that physical processes associated with the denser cluster region seem to have caused accelerated size growth in quiescent galaxies prior to z = 1.6 and slower subsequent growth at z < 1.6 compared to galaxies in the lower density field. The quiescent cluster galaxies at z = 1.6 have higher ellipticities compared to lower redshift samples at fixed mass, and their surface-brightness profiles suggest that they contain extended stellar disks. We argue that the cluster galaxies require dissipationless (i.e., gas-poor or 'dry') mergers to reorganize the disk material and to match the relations for ellipticity, stellar mass, size, and color of early-type galaxies in z < 1 clusters.

Papovich, C.; Bassett, R.; Tran, K.-V; Finkelstein, S. L.; Finkelstein, K. D. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843-4242 (United States); Lotz, J. M.; Ferguson, H. C.; Koekemoer, A. M. [Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218 (United States); Van der Wel, A. [Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, D-69117, Heidelberg (Germany); Bell, E. F. [Department of Astronomy, University of Michigan, Ann Arbor, MI 48109 (United States); Conselice, C. J.; Haeussler, B. [School of Physics and Astronomy, University of Nottingham, Nottingham (United Kingdom); Dekel, A. [Racah Institute of Physics, The Hebrew University, Jerusalem 91904 (Israel); Dunlop, J. S. [Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh (United Kingdom); Guo, Yicheng [Astronomy Department, University of Massachusetts, Amherst, MA 01003 (United States); Faber, S. M.; Kocevski, D. D.; Koo, D. C.; McGrath, E. J. [UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Farrah, D., E-mail: papovich@physics.tamu.edu [Astronomy Centre, University of Sussex, Falmer, Brighton (United Kingdom); and others

2012-05-10T23:59:59.000Z

296

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

297

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

298

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

299

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.

300

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

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

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network [OSTI]

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook For 4th Year Students only on Old Regulations Old Edition 1.1 2012/2013 1 #12;Contents 1 Introduction 6 1.1 Points of contact within the Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2 Physics at Lancaster 15 2.1 Pastoral Care and Development

Low, Robert

302

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network [OSTI]

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook For 1st & 2nd Year Students on New . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.2 Points of contact within the Physics Department . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2 #12;2 Physics at Lancaster 26 2.1 Pastoral Care and Development

Low, Robert

303

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network [OSTI]

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook For 1st , 2nd & 3rd Year Students . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.2 Points of contact within the Physics Department . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2 #12;2 Physics at Lancaster 26 2.1 Pastoral Care and Development

Low, Robert

304

Chapter_1_Physical_Security  

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

Physical Security Physical Security This chapter describes the security procedures adopted by DOE HQ to implement the requirements of the following DOE directives: * Title 10 Code of Federal Regulations (CFR) Part 860.4 * Title 41 CFR Parts 101-19.3 and 102.74, Subpart C * Homeland Security Presidential Directive (HSPD)-12, Policy for a Common Identification Standard for Federal Employees and Contractors * DOE Order 473.3, Protection Program Operations * DOE Order 471.6, Information Security * DOE Order 580.1, Change 1, DOE Personal Property Management Program The objective of these directives is to protect DOE sensitive and classified information, facilities, property, and employees from threats posed by intelligence collectors, terrorists, violent activists,

305

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

306

Preprint version, final version at http://ieeexplore.ieee.org/ 2014 IEEE Int. Conf. on Robotics and Automation, Hong Kong, China Reshaping the Physical Properties of a Quadrotor through IDA-PBC  

E-Print Network [OSTI]

, such as ceiling painting, cleaning or surface inspection. I. INTRODUCTION Multi-rotor UAVs used as flying roboticPreprint version, final version at http://ieeexplore.ieee.org/ 2014 IEEE Int. Conf. on Robotics physical characteristics of a quadrotor and for obtaining a desired interactive behavior between the robot

307

ON USING THE COLOR-MAGNITUDE DIAGRAM MORPHOLOGY OF M67 TO TEST SOLAR ABUNDANCES  

SciTech Connect (OSTI)

The open cluster M67 has solar metallicity and an age of about 4 Gyr. The turnoff (TO) mass is close to the minimum mass for which solar metallicity stars develop a convective core during main sequence evolution as a result of the development of hydrogen burning through the CNO cycle. The morphology of the color-magnitude diagram (CMD) of M67 around the TO shows a clear hook-like feature, a direct sign that stars close to the TO have convective cores. VandenBerg et al. investigated the possibility of using the morphology of the M67 TO to put constraints on the solar metallicity, particularly CNO elements, for which solar abundances have been revised downward by more than 30% over the last few years. Here, we extend their work, filling the gaps in their analysis. To this aim, we compute isochrones appropriate for M67 using new (low metallicity) and old (high metallicity) solar abundances and study whether the characteristic TO in the CMD of M67 can be reproduced or not. We also study the importance of other constitutive physics on determining the presence of such a hook, particularly element diffusion, overshooting and nuclear reaction rates. We find that using the new solar abundance determinations, with low CNO abundances, makes it more difficult to reproduce the characteristic CMD of M67. This result is in agreement with results by VandenBerg et al. However, changes in the constitutive physics of the models, particularly overshooting, can influence and alter this result to the extent that isochrones constructed with models using low CNO solar abundances can also reproduce the TO morphology in M67. We conclude that only if all factors affecting the TO morphology are completely under control (and this is not the case), M67 could be used to put constraints on solar abundances.

Magic, Z.; Serenelli, A.; Weiss, A. [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Str. 1, 85748 Garching (Germany); Chaboyer, B., E-mail: magic@mpa-garching.mpg.d [Dartmouth College, Hanover, NH 03755 (United States)

2010-08-01T23:59:59.000Z

308

Higgs Physics at CLIC  

E-Print Network [OSTI]

The Compact Linear Collider (CLIC) is an attractive option for a future multi-TeV linear electron-positron collider, offering the potential for a rich precision physics programme, combined with sensitivity to a wide range of new phenomena. The physics reach of CLIC has been studied in the context of three distinct centre-of-mass energies, ?s = 350 GeV, 1.4 TeV and 3.0 TeV. This staged scenario provides an excellent environment for precise studies of the properties of the 126 GeV Higgs boson. Operation at ?s = 350 GeV allows, on the one hand, for a determination of the couplings and width of the Higgs boson in a model-independent manner through the study of the Higgsstrahlung process, and on the other hand, for a study of Higgs bosons produced in W+W? fusion for the most common Higgs decay modes. Operation at higher centre-of-mass energies, ?s = 1.4 TeV and 3 TeV, provides high statistics W+W? fusion samples allowing for high precision measurements of many Higgs couplings and a study of rare Higgs de...

Sicking, E.

2014-01-01T23:59:59.000Z

309

Apoptotic detection methods from morphology to gene  

Science Journals Connector (OSTI)

To date, many terms have been given for cell death and forgotten before they became widely accepted. Most researchers studying cell death use some terms for cell death that have survived over centuries and regard apoptosis and programmed cell death (PCD), and necrosis and oncosis as synonymous. The different terminologies used for cell death depending on the preference of researchers sometimes cause confusion in the study of apoptosis. The study of apoptosis was first based on cell morphology using transmission electron microscopy (TEM): chromatin condensation, cellular shrinkage, budding and apoptotic body formation. Recently, marked progress in biochemistry, molecular biology and genetics provided researchers of apoptosis various tools for apoptotsis detection, such as the terminal deoxynucleotidyl transferase (TdT)-mediated dUTP-biotin nick end-labeling (TUNEL) method, agarose gel electrophoresis using extracted DNA, staining methods using fluorescence dyes, and flow cytometry. This review focuses on the following topics: history of the study of cell death and its classification, apoptosis-related proteins and their signal pathways, morphological, biochemical and molecular biological methods of apoptosis detection, and the transcriptional regulation of bcl-2 using the real-time Southwestern method and cancer gene therapy. In addition, the merits and demerits of the above-mentioned apoptosis detection methods are discussed.

Yoshinori Otsuki; Zhonglian Li; Masa-Aki Shibata

2003-01-01T23:59:59.000Z

310

A model for cosmological simulations of galaxy formation physics: multi-epoch validation  

Science Journals Connector (OSTI)

......i.e. the growth rates, concentrations, morphologies...highest resolution model passes above most of the low-redshift...2000). The varied physics models impact the simulated...limited by the growth rate of dark matter haloes...implementation of feedback physics (e.g. Springel Hernquist......

Paul Torrey; Mark Vogelsberger; Shy Genel; Debora Sijacki; Volker Springel; Lars Hernquist

2014-01-01T23:59:59.000Z

311

Physics & Astronomy Degree options  

E-Print Network [OSTI]

148 Physics & Astronomy Degree options BSc (Single Honours Degrees) Astrophysics Physics MPhys AND HL7 in Mathematics Physics and Astronomy (Gateway and International Gateway) Entry For UK students. Physics&Astronomy Subject enquiries Dr Kenny Wood E: physics@st-andrews.ac.uk Features * The nature

Brierley, Andrew

312

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

313

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.

314

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

315

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

316

1. Physical constants 1 1. PHYSICAL CONSTANTS  

E-Print Network [OSTI]

1. Physical constants 1 1. PHYSICAL CONSTANTS Table 1.1. Reviewed 2011 by P.J. Mohr (NIST). Mainly in parentheses after the values give the 1-standard-deviation uncertainties in the last digits; the corresponding also P.J. Mohr and D.B. Newell, "Resource Letter FC-1: The Physics of Fundamental Constants," Am. J

317

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

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 fr 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

Morphological tranformation of calcite crystal growth by prismatic "acidic" polypeptide sequences.  

SciTech Connect (OSTI)

Many of the interesting mechanical and materials properties of the mollusk shell are thought to stem from the prismatic calcite crystal assemblies within this composite structure. It is now evident that proteins play a major role in the formation of these assemblies. Recently, a superfamily of 7 conserved prismatic layer-specific mollusk shell proteins, Asprich, were sequenced, and the 42 AA C-terminal sequence region of this protein superfamily was found to introduce surface voids or porosities on calcite crystals in vitro. Using AFM imaging techniques, we further investigate the effect that this 42 AA domain (Fragment-2) and its constituent subdomains, DEAD-17 and Acidic-2, have on the morphology and growth kinetics of calcite dislocation hillocks. We find that Fragment-2 adsorbs on terrace surfaces and pins acute steps, accelerates then decelerates the growth of obtuse steps, forms clusters and voids on terrace surfaces, and transforms calcite hillock morphology from a rhombohedral form to a rounded one. These results mirror yet are distinct from some of the earlier findings obtained for nacreous polypeptides. The subdomains Acidic-2 and DEAD-17 were found to accelerate then decelerate obtuse steps and induce oval rather than rounded hillock morphologies. Unlike DEAD-17, Acidic-2 does form clusters on terrace surfaces and exhibits stronger obtuse velocity inhibition effects than either DEAD-17 or Fragment-2. Interestingly, a 1:1 mixture of both subdomains induces an irregular polygonal morphology to hillocks, and exhibits the highest degree of acute step pinning and obtuse step velocity inhibition. This suggests that there is some interplay between subdomains within an intra (Fragment-2) or intermolecular (1:1 mixture) context, and sequence interplay phenomena may be employed by biomineralization proteins to exert net effects on crystal growth and morphology.

Kim, I; Giocondi, J L; Orme, C A; Collino, J; Evans, J S

2007-02-13T23:59:59.000Z

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.


321

Report of the Quark Flavor Physics Working Group  

E-Print Network [OSTI]

This report represents the response of the Intensity Frontier Quark Flavor Physics Working Group to the Snowmass charge. We summarize the current status of quark flavor physics and identify many exciting future opportunities for studying the properties of strange, charm, and bottom quarks. The ability of these studies to reveal the effects of new physics at high mass scales make them an essential ingredient in a well-balanced experimental particle physics program.

Butler, J N; Ritchie, J L; Cirigliano, V; Kettell, S; Briere, R; Petrov, A A; Schwartz, A; Skwarnicki, T; Zupan, J; Christ, N; Sharpe, S R; Van de Water, R S; Altmannshofer, W; Arkani-Hamed, N; Artuso, M; Asner, D M; Bernard, C; Bevan, A J; Blanke, M; Bonvicini, G; Browder, T E; Bryman, D A; Campana, P; Cenci, R; Cline, D; Comfort, J; Cronin-Hennessy, D; Datta, A; Dobbs, S; Duraisamy, M; El-Khadra, A X; Fast, J E; Forty, R; Flood, K T; Gershon, T; Grossman, Y; Hamilton, B; Hill, C T; Hill, R J; Hitlin, D G; Jaffe, D E; Jawahery, A; Jessop, C P; Kagan, A L; Kaplan, D M; Kohl, M; Krizan, P; Kronfeld, A S; Lee, K; Littenberg, L S; MacFarlane, D B; Mackenzie, P B; Meadows, B T; Olsen, J; Papucci, M; Parsa, Z; Paz, G; Perez, G; Piilonen, L E; Pitts, K; Purohit, M V; Quinn, B; Ratcliff, B N; Roberts, D A; Rosner, J L; Rubin, P; Seeman, J; Seth, K K; Schmidt, B; Schopper, A; Sokoloff, M D; Soni, A; Stenson, K; Stone, S; Sundrum, R; Tschirhart, R; Vainshtein, A; Wah, Y W; Wilkinson, G; Wise, M B; Worcester, E; Xu, J; Yamanaka, T

2013-01-01T23:59:59.000Z

322

Lowx physics  

Science Journals Connector (OSTI)

...experiment led to the concept of the nuclear atom (Geiger & Marsden 1909...stronger y dependence at the cost of involving derivatives of r...collider physics. Cambridge Mono- graphs on Particle Physics, Nuclear Physics and Cosmology, vol...

2001-01-01T23:59:59.000Z

323

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

324

INTEGRAL-GEOMETRY MORPHOLOGICAL IMAGE ANALYSIS  

E-Print Network [OSTI]

for Biophysical Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands b Institute for Theoretical Physics and Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen * Laboratory for Biophysical Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands

325

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...

326

Saturday Morning Physics - Talks  

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

are now asking. pdf print version (pdf) Further information online Contemporary Physics Education Project The Particle Adventure Particle Physics - Education and Outreach...

327

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

328

Project X: Physics Opportunities  

E-Print Network [OSTI]

Part 2 of "Project X: Accelerator Reference Design, Physics Opportunities, Broader Impacts". In this Part, we outline the particle-physics program that can be achieved with Project X, a staged superconducting linac for intensity-frontier particle physics. Topics include neutrino physics, kaon physics, muon physics, electric dipole moments, neutron-antineutron oscillations, new light particles, hadron structure, hadron spectroscopy, and lattice-QCD calculations. Part 1 is available as arXiv:1306.5022 [physics.acc-ph] and Part 3 is available as arXiv:1306.5024 [physics.acc-ph].

Andreas S. Kronfeld; Robert S. Tschirhart; Usama Al-Binni; Wolfgang Altmannshofer; Charles Ankenbrandt; Kaladi Babu; Sunanda Banerjee; Matthew Bass; Brian Batell; David V. Baxter; Zurab Berezhiani; Marc Bergevin; Robert Bernstein; Sudeb Bhattacharya; Mary Bishai; Thomas Blum; S. Alex Bogacz; Stephen J. Brice; Joachim Brod; Alan Bross; Michael Buchoff; Thomas W. Burgess; Marcela Carena; Luis A. Castellanos; Subhasis Chattopadhyay; Mu-Chun Chen; Daniel Cherdack; Norman H. Christ; Tim Chupp; Vincenzo Cirigliano; Pilar Coloma; Christopher E. Coppola; Ramanath Cowsik; J. Allen Crabtree; Andr de Gouva; Jean-Pierre Delahaye; Dmitri Denisov; Patrick deNiverville; Ranjan Dharmapalan; Alexander Dolgov; Georgi Dvali; Estia Eichten; Jrgen Engelfried; Phillip D. Ferguson; Tony Gabriel; Avraham Gal; Franz Gallmeier; Kenneth S. Ganezer; Susan Gardner; Douglas Glenzinski; Stephen Godfrey; Elena S. Golubeva; Stefania Gori; Van B. Graves; Geoffrey Greene; Cory L. Griffard; Ulrich Haisch; Thomas Handler; Brandon Hartfiel; Athanasios Hatzikoutelis; Ayman Hawari; Lawrence Heilbronn; James E. Hill; Patrick Huber; David E. Jaffe; Christian Johnson; Yuri Kamyshkov; Daniel M. Kaplan; Boris Kerbikov; Brendan Kiburg; Harold G. Kirk; Andreas Klein; Kyle Knoepfel; Boris Kopeliovich; Vladimir Kopeliovich; Joachim Kopp; Wolfgang Korsch; Graham Kribs; Ronald Lipton; Chen-Yu Liu; Wolfgang Lorenzon; Zheng-Tian Lu; Naomi C. R. Makins; David McKeen; Geoffrey Mills; Michael Mocko; Rabindra Mohapatra; Nikolai V. Mokhov; Guenter Muhrer; Pieter Mumm; David Neuffer; Lev Okun; Mark A. Palmer; Robert Palmer; Robert W. Pattie Jr.; David G. Phillips II; Kevin Pitts; Maxim Pospelov; Vitaly S. Pronskikh; Chris Quigg; Erik Ramberg; Amlan Ray; Paul E. Reimer; David G. Richards; Adam Ritz; Amit Roy; Arthur Ruggles; Robert Ryne; Utpal Sarkar; Andy Saunders; Yannis K. Semertzidis; Anatoly Serebrov; Hirohiko Shimizu; Arindam K. Sikdar; Robert Shrock; Pavel V. Snopok; William M. Snow; Aria Soha; Stefan Spanier; Sergei Striganov; Zhaowen Tang; Lawrence Townsend; Jon Urheim; Arkady Vainshtein; Richard Van de Water; Ruth S. Van de Water; Richard J. Van Kooten; Bernard Wehring; Lisa Whitehead; Robert J. Wilson; Elizabeth Worcester; William C. Wester III; Albert R. Young; Geralyn Zeller

2013-06-20T23:59:59.000Z

329

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.

330

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...

331

Carl A. Gagliardi PHYSICS  

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

Physical Society Joseph B. Natowitz CHEMISTRY Heavy-ion reaction dynamics and thermodynamics - ACS Award in Nuclear Chemistry - Fellow, American Physical Society Ralf Rapp...

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

A compact physical model for morphology induced intrinsic degradation of organic bulk heterojunction solar cell  

E-Print Network [OSTI]

challenge for economic viability of any solar cell technology. Well known examples include light heterojunction solar cell Biswajit Raya) and Muhammad A. Alamb) School of Electrical and Computer Engineering-OPV literature shows that the degradation mechanisms of BH solar cell are complex, diverse, and poorly understood

Alam, Muhammad A.

334

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

335

Computation of the linear elastic properties of random porous materials with a wide variety of microstructure  

Science Journals Connector (OSTI)

...moduli of composites. Mech. Mater. 4, 116. Roberts, A. P. 1997 Morphology and thermal conductivity of model organic aerogels. Phys. Rev. E 55, 12861289. Roberts, A. P. & Garboczi, E. J. 1999 Elastic properties of a tungstensilver composite...

2002-01-01T23:59:59.000Z

336

ORISE: Environmental Assessment and Health Physics  

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

Environmental Assessments and Health Physics Environmental Assessments and Health Physics Performing environmental assessments and independent verification is essential to building public trust and confidence in radiological cleanup. As the U.S. Department of Energy (DOE) and other government agencies target contaminated sites across the country for decontamination and decommissioning, strict guidelines must be followed to ensure that property is effectively remediated before being released for public or private use. Through a combination of environmental assessments, health physics services, and radiochemistry analyses, the Oak Ridge Institute for Science and Education (ORISE) performs independent environmental assessment and verification at DOE cleanup sites across the country. ORISE applies its

337

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

338

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

339

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

340

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

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

Fundamentals of Plasma Physics  

E-Print Network [OSTI]

Fundamentals of Plasma Physics James D. Callen University of Wisconsin, Madison June 28, 2006 #12;PREFACE Plasma physics is a relatively new branch of physics that became a mature science over the last half of the 20th century. It builds on the fundamental areas of classical physics: mechanics

Callen, James D.

342

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

343

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

344

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

345

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.

346

Touil et al., page 1 Flavonoid-Induced Morphological Modifications  

E-Print Network [OSTI]

, apigenin, quercetin, baicalein, fisetin, and galangin. Important SAR for cytotoxicity included the C2-C3 double bond and 3',4'-dihydroxylation. Concerning the morphological effects on EC, only fisetin hydroxylation at C-7 and C-4'. Fisetin, the most active agent, presented cell morphology that was distinct

Paris-Sud XI, Université de

347

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

348

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

349

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

350

Particle Physics Education Sites  

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

쭺-¶ 쭺-¶ Particle Physics Education Sites ¡]¥H¤U¬°¥~¤åºô¯¸¡^ quick reference Education and Information - National Laboratory Education Programs - Women and Minorities in Physics - Other Physics Sites - Physics Alliance - Accelerators at National Laboratories icon Particle Physics Education and Information sites: top Introduction: The Particle Adventure - an interactive tour of particle physics for everyone: the basics of theory and experiment. Virtual Visitor Center of the Stanford Linear Accelerator Center. Guided Tour of Fermilab, - overviews of several aspects of Particle Physics. Also check out Particle Physics concepts. Probing Particles - a comprehensive and straight-forward introduction to particle physics. Big Bang Science - approaches particle physics starting from the theoretical origin of the universe.

351

Physics of mirror systems  

SciTech Connect (OSTI)

In recent years the emphasis in research on the magnetic mirror approach to fusion has been shifted to address what are essentially economically-motivated issues. The introduction of the Tandem Mirror idea solved in principal the problem of low Q (low fusion power gain) of mirror-based fusion systems. In order to optimize the tandem mirror idea from an economic standpoint, some important improvements have been suggested. These improvements include the thermal barrier idea of Baldwin and Logan and the axicell concept of Kesner. These new modifications introduce some special physics considerations. Among these are (1) The MHD stability properties of high energy electron components in the end cells; (2) The optimization of end-cell magnetic field configurations with the objective of minimizing equilibrium parallel currents; (3) The suppression of microstabilities by use of sloshing ion distributions. Following a brief outline of tandem mirror concepts, the above three topics are discussed, with illustrative examples taken from earlier work or from recent design studies.

Post, R.F.

1982-05-01T23:59:59.000Z

352

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

353

Physical Chemistry of Ionic Liquids  

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

Ionic liquids are experiencing explosive growth in many areas of research Ionic liquids are experiencing explosive growth in many areas of research and practical applications. They present a wide range of complex physical and chemical behaviors, including ambient vapor pressures ranging from UHV to weakly volatile, a substantial variety of distinct condensed phases, including multiple crystal isomorphs, glasses, amorphous plastic and liquid crystal phases, deep supercooling, and interesting dynamical and transport phenomena. Experiments and simulations have shown that their intrinsic self-organization at the nanoscale is responsible for several of these properties. The symposium will assemble an international array of speakers to discuss ionic liquids in the context of their heterogeneous environments, solvation, dynamics and transport, interfacial properties,

354

Fundamental particles and interactions A wall chart of modern physics  

Science Journals Connector (OSTI)

The chart produced by the Fundamental Particles and Interactions Chart Committee is explained. This chart describes the properties of elementary particles according to the Standard Model and is intended for physics instruction at the high school and undergraduate levels. (AIP)

The Fundamental Particles and InteractionsChart Committee

1988-01-01T23:59:59.000Z

355

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

356

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

357

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

358

PHYSICAL CHANGES IN THE PORE STRUCTURE OF COAL WITH CHEMICAL PROCESSING  

E-Print Network [OSTI]

of Raw Ro 1and Seam Coal . A. B. C. D. Introduction . . . .iv IV. Physical Properties of Extracted Coals A. B.Extracted Coal Samples . . . . . . . . . . . . .

Harris Jr, E.C.

2011-01-01T23:59:59.000Z

359

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

360

Effect of compatibilizer on impact and morphological analysis of recycled HDPE/PET blends  

SciTech Connect (OSTI)

Blends based on recycled high density polyethylene (rHDPE) and recycled polyethylene terephthalate (rPET) were prepared using a corotating twin screw extruder. PET and HDPE are incompatible polymers and their blends showed poor properties. Compatibilization is a step to obtain blends with good mechanical properties and in this work, ethylene glycidyl methacrylate copolymer (E-GMA) was used as a compatibilizing agent. The effect of blends based on rHDPE and rPET with and without a compatibilizer, E-GMA were examined. From the studies clearly showed that the addition of 5% E-GMA increased the impact strength. SEM analysis of rHDPE/rPET blends confirmed the morphological interaction and improved interfacial bonding between two phases.

Salleh, Mohd Nazry [School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia and School of Materials Engineering, Universiti Malaysia Perlis, 02600 Jejawi, Perlis (Malaysia); Ahmad, Sahrim; Ghani, Mohd Hafizuddin Ab; Chen, Ruey Shan [School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia)

2013-11-27T23:59:59.000Z

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.


361

Los Alamos Lab: Materials Physics & Applications Division  

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

ADEPS Materials Physics and Applications, MPA ADEPS Materials Physics and Applications, MPA About Us Organization Jobs Materials Physics & Applications Home Center for Integrated Nanotechnologies Superconductivity Technology Center Condensed Matter and Magnet Science Sensors & Electrochemical Devices Materials Chemistry CONTACTS Division Leader Antoinette Taylor Deputy Division Leader David Watkins Point of Contact Susan Duran 505-665-1131 Materials Physics and Applications Division serves as the Laboratory's focal point for fundamental materials physics and materials chemistry, provides world-class user facilities, unique experimental capabilities, and the scientific talent and infrastructure to facilitate understanding and control of materials properties, and develops and apply materials-based solutions

362

Material property correlations for uranium mononitride  

E-Print Network [OSTI]

modeling efforts, the objective of this work was the development of a set of UN material property correlations needed for use in fuel modeling codes. This set of material properties includes the physical properties (lattice parameter, density, and mean..., exponential or power law form, then the FITTER code (Thomas et al, 1987) was employed. For more complicated forms, the SLOWFIT code (Hayes and Thomas 1988), based on a generalized search technique, was required. The PLOTTER code (Senor 1988) allowed...

Hayes, Steven Lowe

2012-06-07T23:59:59.000Z

363

Effect of Clay Amounts on Morphology and Mechanical Performances in Multiscale PET Composites  

Science Journals Connector (OSTI)

This work presents an investigation of the properties of poly(ethylene terephthalate)/glass fibres/nanoclay multiscale composites. The aim is to demonstrate the effect of adding various clay amounts on the morphology and mechanical performance of multiscale PET composites. Multiscale composites were prepared by adding 0.5 1.0 3.0 and 5.0 wt% of Cloisite15A montmorillonite: Initially a masterbatch of pure PET blended with 10 wt% of Cloisite15A was obtained in a co?rotating twin screw extruder. The multiscale composites were then blended via mechanical mixing and injection moulded by adding the masterbatch to the glass fibre reinforced matrix. The morphological and mechanical characterizations of all compounds are discussed. X?ray diffraction (XRD) and transmission electron microscopy (TEM) revealed that the characteristic (001) peak of the nanocomposite obtained by extrusion (masterbatch) shifted to the lower angle region stating an intercalated structure. However the subsequent injection moulding process changed the morphological structure of the multiscale nanocomposites reducing the basal distance mostly for small loadings of nanoclay. The addition of nanoclay to PET matrices increases the degree of crystallinity the clay platelets possibly playing the role of nucleating agent as revealed by DSC and FTIR. The time relaxation spectra broaden as seen by DMA as the ratio of clay/polymer interfaces increases. The yield stress of composites with 0.5 and 1 wt% of C15A content are enhanced. For more than 3% of nanoclay the yield stress decreases. The Youngs modulus is increased when adding C15 nanoclay. Indeed clay exfoliation was not attained but the intercalated particle dispersion improved the stiffness properties of PET/glass fibres/nanoclay composites.

C. N. Barbosa; F. Chabert; V. Nassiet; J. C. Viana; P. Pereira

2011-01-01T23:59:59.000Z

364

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

365

Physics Flash Newsletter  

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

Physics Links Jobs in Physics Human Resources Working at Los Alamos Los Alamos resources To read past issues, please see the: 2012 archive page 2011 archive page December 2013 | In...

366

Elementary Reactor Physics  

Science Journals Connector (OSTI)

... THERE are few subjects which have developed at the rate at which reactor physics and ... physics and reactor theory have done. This, of course, is largely due to the circumstances in ...

J. F. HILL

1962-02-10T23:59:59.000Z

367

Physics, complexity and causality  

Science Journals Connector (OSTI)

... physics theory that explains the nature of, or even the existence of, football matches, teapots, or jumbo-jet aircraft. The human mind is physically based, but there is ...

George F. R. Ellis

2005-06-08T23:59:59.000Z

368

Morphology and mechanism study for the synthesis of ZrB{sub 2}SiC powders by different methods  

SciTech Connect (OSTI)

ZrB{sub 2}SiC ceramics, whose SiC is generally incorporated into the system by mechanical mixing, are known to have better performance than monolithic ZrB{sub 2}. Therefore, synthesis of duplex ZrB{sub 2}SiC powders is beneficial for improving sinterability and mechanical properties of ZrB{sub 2}SiC composites. In the present work, ZrB{sub 2}SiC duplex powders with different morphologies were synthesized at 1550 C for 2 h using as-synthesized amorphous hydrous ZrO{sub 2}SiO{sub 2}. Both precipitation and solgel methods were used to prepare ZrO{sub 2}SiO{sub 2} precursors. ZrB{sub 2}SiC powder derived from precipitation method presented a rod-like morphology with smaller irregular particles adhering to them. And the morphology from solgel method was equiaxed shape with a very uniform distribution for principal components of Zr and Si. - Graphical abstract: SEM images of the ZrB2-SiC powders obtained by different methods. Display Omitted - Highlights: ZrB{sub 2}SiC powders with different morphologies were synthesized. Precipitation and solgel methods were used to prepare ZrO{sub 2}SiO{sub 2} precursors. Possible mechanisms of morphology formation were investigated. This work provided a potential way of morphology control for raw powders. The synthesized duplex powders achieved a uniform distribution of SiC in ZrB{sub 2}.

Zhao, Bin; Zhang, Yun [Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191 (China); Li, Junping [Aerospace Research Institute of Materials and Processing Technology, No. 1 Nan Da Hong Men Road, Fengtai District, Beijing 100076 (China); Yang, Biyun; Wang, Tingyu; Hu, Yongzhen; Sun, Dongfeng [Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191 (China); Li, Ruixing, E-mail: ruixingli@yahoo.com [Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191 (China); Yin, Shu [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan); Feng, Zhihai [Aerospace Research Institute of Materials and Processing Technology, No. 1 Nan Da Hong Men Road, Fengtai District, Beijing 100076 (China); Sato, Tsugio [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan)

2013-11-15T23:59:59.000Z

369

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

370

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

371

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

372

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

373

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

374

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

375

Fundamental Physics with Cold Neutrons J. S. Nico,1  

E-Print Network [OSTI]

Fundamental Physics with Cold Neutrons J. S. Nico,1 G. L. Greene,2 F. E. Wietfeldt,3 and W. S physics and quantum chromodynamics (QCD). Low energy properties of nucleons and nuclei, such as weak interactions in n-A systems, low energy n-A scattering amplitudes, and the internal electro- magnetic structure

376

Physics of neutron star surface layers and their thermal radiation  

E-Print Network [OSTI]

Physics of neutron star surface layers and their thermal radiation Alexander Y. Potekhin Ioffe review the physical properties of neutron star surface layers, important for the stellar thermal radiation, taking into consideration the effects of strong magnetic fields. Keywords: Neutron stars

377

Vertical morphology in solution-processed organic solar cells  

Science Journals Connector (OSTI)

Motivated by a report of an all-solution processed P3HT/PCBM bilayer organic solar cell, we have investigated the vertical morphology by using a combination of...

Lee, Kwan H; Schwenn, Paul E; Smith, Arthur R G; Cavaye, Hamish; Shaw, Paul E; James, Michael; Krueger, Karsten B; Gentle, Ian R; Meredith, Paul; Burn, Paul L

378

Morphology and Performance of Polymer-Based Solar Cells  

Science Journals Connector (OSTI)

Excitons in polymer-based solar cells are short lived placing great emphasis on construction of a nanoscale morphology of electron donor and acceptor. Here we discuss how processing...

Mackay, Michael E

379

Nanoclay-directed structure and morphology in PVDF electrospun membranes  

Science Journals Connector (OSTI)

The incorporation of organically modified Lucentite nanoclay dramatically modifies the structure and morphology of the PVDF electrospun fibers. In a molecular level, the nanoclay preferentially stabilizes the all-trans conformation of the polymer chain, ...

Kyunghwan Yoon, Antonios Kelarakis

2014-01-01T23:59:59.000Z

380

Nuclear Magnetic Resonance Studies of Macroscopic Morphology and Dynamics  

E-Print Network [OSTI]

Applications in Materials Magnetic Science, Agriculture andApplications in Materials Magnetic Science, Agriculture andMagnetic Resonance Studies of Macroscopic Morphology and Dynamics Geoffrey Alden Barrali Department of Chemistry University of California, Berkeley and Materials Sciences

Barrall, G.A.

2010-01-01T23:59:59.000Z

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

IMPACTS OF LANDSLIDE DAMS ON MOUNTAIN VALLEY MORPHOLOGY  

Science Journals Connector (OSTI)

Landslide dams can influence mountain-valley morphology significantly in the vicinity of the ... and their impoundments, and thus influence the long-term effects of these natural features on mountain-valley morph...

R.L. SCHUSTER

2006-01-01T23:59:59.000Z

382

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

383

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

384

Morphological control of silicalite-1 crystals using microemulsion mediated growth  

E-Print Network [OSTI]

Zeolites are crystalline, microporous aluminosilicates that have been extensively used in heterogeneous catalysis, separations, and ion-exchange operations. It has long been understood that particle size and morphology play a central role...

Lee, Seung Ju

2005-11-01T23:59:59.000Z

385

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

386

Particle Physics, Nuclear Physics and Nuclear Energy  

Science Journals Connector (OSTI)

Particle physics is a frontier subject which studies the smallest constituents of matter and the laws governing their interactions. It plays an important role in studying the origin and evolution of the univer...

Hesheng Chen

2011-01-01T23:59:59.000Z

387

Physics of Cancer | Princeton Plasma Physics Lab  

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

18, 2014, 9:30am to 11:00am Science On Saturday MBG Auditorium Physics of Cancer Professor Wolfgang Losert, Associate Professor, and Director, Partnership for Cancer Technology...

388

Physical Characteristics of Synthetic Rubbers  

Science Journals Connector (OSTI)

A summary of the nature and special applications of the more important types of synthetic rubbers is given. Two series of rubber and synthetic rubber stocks compounded on the basis of comparable pigmentation were selected for study. In addition to the conventional physical properties (tensile strength and elongation at rupture modulus aging etc.) a number of other mechanical properties such as dynamic rigidity hysteresis loss ``blowout resistance '' ``running temperature '' and tensile strength at elevated temperature were measured. Swelling tests in various solvents were also made. Results are plotted in the form of correlation charts in an effort to select proper methods of measurement. Some observations on comparative service tests in tires in the case of three synthetic rubbers indicate them to be satisfactory on a quality basis for use in time of emergency. The importance of care in selecting the proper physical tests and methods of analysis is emphasized in the light of the results given. It is concluded that rubbertesting techniques and interpretation must be modified in certain instances in evaluating synthetic rubber stocks.

J. N. Street; J. H. Dillon

1941-01-01T23:59:59.000Z

389

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

390

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

391

High Energy Physics Division, ANL Lattice QCD  

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

Energy Energy Physics Division, ANL Lattice QCD in extreme environments D. K. Sinclair (HEP, Argonne) J. B. Kogut (Physics, Illinois) D. Toublan (Physics, Illinois) 1 Lattice QCD Quantum chromodynamics(QCD) de- scribes Hadrons and their strong inter- actions. Hadrons consist of quarks held together by gluons. Lattice QCD is QCD on a 4-dimensional (space-time) lattice. Allows numerical simulation of the functional integrals which define this quantum field theory, and non-perturbative QCD calculations. Physics - properties of hadrons (masses, etc.), hadronic matrix elements (HEP), hadronic matter at finite temperature and/or densities (RHIC, early universe, neutron stars). 2 Computational Methods * Functional integral is mapped to the partition function for a classical sys- tem. Molecular-dynamics methods are used to calculate the observables for this classical system.

392

U.S. CMS - CMS Physics  

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

CMS Physics CMS Physics CMS is a general-purpose particle physics experiment. Designed to see a wide range of particles and phenomena produced in LHC collisions, each involves approximately 2,000 physicists from more than 30 countries. These scientists will use the data collected from the complex CMS detector to search for new phenomena including the Higgs boson, supersymmetry, and extra dimensions. They will also measure the properties of previously-discovered quarks and bosons with unprecedented precision, and be on the lookout for completely new, unpredicted phenomena. CMS@CERN CMS Outreach @ CERN LHC Physics Center (LPC) CMS Center at Fermilab Wikipedia Article How do they know what to look for? Physicists have spent decades developing the Standard Model, a set of theories that describe in detail the

393

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

394

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.,...

395

E-Print Network 3.0 - agents morphological study Sample Search...  

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

cellular and modular robots, dis- tributed robot systems, morphology... -assembling mobile robots. Self-organized growth of global morphological structures emerges through...

396

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

397

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

398

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

399

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

400

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

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

Effect of Fe-ion implantation doping on structural and optical properties of CdS thin films  

Science Journals Connector (OSTI)

We report on effects of Fe implantation doping-induced changes in structural, optical, morphological, and vibrational properties of cadmium sulfide thin films. Films were implanted with 90keV Fe+ ions at room te...

S. Chandramohan; A. Kanjilal; S. N. Sarangi; S. Majumder

2010-06-01T23:59:59.000Z

402

WOOD PROPERTIES AND THEIR VARIATIONS WITHIN THE TREE STEM OF LESSER-USED SPECIES OF TROPICAL  

E-Print Network [OSTI]

WOOD PROPERTIES AND THEIR VARIATIONS WITHIN THE TREE STEM OF LESSER-USED SPECIES OF TROPICAL to utilization about the species. This paper examines physical and mechanical properties of wood. There was an overall increase of wood's physical and mechanical properties from the breast height to the top

403

Top Mass and Properties  

E-Print Network [OSTI]

The top quark was discovered in 1995. The top quark mass is now well measured at the Tevatron, with uncertainty getting below 1% of the top mass. The world average from last year was 170.9 $\\pm$ 1.8 GeV/$c^2$. The new CDF measurement is 172 $\\pm$ 1.2 (stat) $\\pm$ 1.5 (sys) GeV/$c^2$, and D0 will soon present a new measurement. The top quark mass is an important parameter in the Standard Model, and should be measured as precisely as possible. To learn more about the top quark observed and study possible new physics, other properties also should be measured. At the Tevatron, the charge of the top quark can be measured directly. Examples of other properties studied and reported in this presentation are W helicity, top decay branching ratio to b ($R_b$), searches for $t \\to H b$ and for flavor changing neutral current (FCNC). The results are all consistent with the Standard Model within current statistics. With significantly more data being collected at the Tevatron, precision measurements of the top properties are just starting.

Yen-Chu Chen

2008-05-15T23:59:59.000Z

404

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

405

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

406

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

407

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

408

Morphology and Gas Adsorption Properties of Palladium?Cobalt-Based Cyanogels  

Science Journals Connector (OSTI)

The aerogel surfaces are found to be fractal as analyzed by gas adsorption and small-angle X-ray scattering. ... In addition, the presence of narrow micro- and mesoporosity in these gels makes them suitable candidates for selective gas adsorbents and filters. ... Xerogels were made by smearing out the hydrogels on a filter paper to eliminate the water. ...

Rahul S. Deshpande; Stefanie L. Sharp-Goldman; Jennifer L. Willson; Andrew B. Bocarsly; Joachim Gross; Adam C. Finnefrock; Sol M. Gruner

2003-10-03T23:59:59.000Z

409

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

E-Print Network [OSTI]

, and the San Joaquin basin, an oil and gas province, to the south (Dorman, 1980). This thesis follows the style and format of the American Association of Petroleum Geolo ists Bulletin. The San Joaquin basin is bounded by the Sierra Nevada Range on the east... the basin sufficiently to permit the deposition of the Pliocene Etchegoin Formation in shallow marine water (Metz and Whitworth, 1983). Drilling History The San Joaquin Basin has long been recognized as an oil and gas producing province. Approximately...

Royo, Gilberto Rafael

2012-06-07T23:59:59.000Z

410

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

411

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

412

Processing-Morphology-Property Relationships and Composite Theory Analysis of Reduced Graphene Oxide/Natural Rubber  

E-Print Network [OSTI]

-8 latex mixing could provide an effective means for production of graphene/rubber nanocomposites. Latex Oxide/Natural Rubber Nanocomposites Jeffrey R. Potts, Om Shankar, Ling Du, and Rodney S. Ruoff of Texas at Austin, 204 E. Dean Keeton St., Austin, Texas 78712, United States Goodyear Tire and Rubber

413

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

414

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

415

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

416

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

417

Morphological response of Bilophila wadsworthia to imipenem: correlation with properties of penicillin-binding proteins.  

Science Journals Connector (OSTI)

...spheroplasts were readily stained with crystal violet and were up to 30 p...colonies, and cells appeared as spherical and bulging forms upon crystal violet staining. Reversion...shape maintenance) results in spherical forms, and inhibition of PBP...

P Summanen; H M Wexler; K Lee; S A Becker; M M Garcia; S M Finegold

1993-12-01T23:59:59.000Z

418

Property:Definition | Open Energy Information  

Open Energy Info (EERE)

Property Property Edit with form History Facebook icon Twitter icon » Property:Definition Jump to: navigation, search Property Name Definition Property Type Text Description The definition of the term or concept. Pages using the property "Definition" Showing 25 pages using this property. (previous 25) (next 25) 2 2-M Probe Survey + Probe surveys are used to physically identify and delineate thermal anomalies. A 2-m long hollow steel tube with a tungsten-carbide alloy tip is driven into the ground using a hammer drill. Then a high-precision resistive-temperature device is inserted into the tube. The probe is then left in place for at least one hour. A Accommodation Zone + Accommodation zones occur at fault intersections consisting of belts of interlocking, oppositely dipping normal faults. Multiple subsurface fault intersections in these zones are a favorable host for geothermal activity.

419

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

420

Atomic Physics and Thermonuclear Fusion Research  

Science Journals Connector (OSTI)

Presently thermonuclear fusion research is faced with a number of atomic and molecular physics problems depending on the type of high-temperature plasma investigated. The present article discusses some particular atomic physics aspects in connection with magnetically confined plasmas (Tokamaks, Stellarators): (1) rate equations for density, momentum and energy with application to plasmas; (2) initial phase of Tokamak plasmas; (3) influence of impurity radiation on operating conditions of fusion plasmas in general and on Tokamak plasmas in particular; (4) influence of atomic elementary reactions on thermodynamic plasma properties; (5) level structures of highly ionized atoms; (6) spectroscopic diagnostic problems.

H W Drawin

1981-01-01T23:59:59.000Z

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.


421

ORISE: Health physics services  

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

Health physics services 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 for the U.S. Department of Energy (DOE) and U.S. Nuclear Regulatory Commission (NRC), as well as other federal and state agencies. From radiological facility audits and reviews to dose modeling and technical evaluations, ORISE is nationally-recognized for its health physics support to decontamination and decommissioning (D&D) projects across the United States. Our health physics services include: Environmental survey Applied health physics projects We work with government agencies and organizations to identify, measure and assess the presence of radiological materials during the D&D process. ORISE

422

{ital In situ} studies of morphology, strain, and growth modes of a molecular organic thin film  

SciTech Connect (OSTI)

We use grazing incidence x-ray scattering to study the molecular structure and morphology of thin ({lt}70 ML) crystalline films of 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) on Au(111) surfaces as a function of film thickness, substrate temperature, and growth rate. Although the first two PTCDA monolayers grow in a layer-by-layer fashion, the film evolution beyond the second monolayer depends strongly upon the growth conditions resulting in low-temperature [i.e., nonequilibrium (NEQ)] and high-temperature [equilibrium (EQ)] growth regimes. In the NEQ regime, the films roughen monotonically with increasing film thickness, but retain a well-defined film thickness. Furthermore, we find that these films have a lattice strain which is independent of film thickness. In the EQ regime, the film acquires a three-dimensional morphology for thicknesses {gt}2 ML, and the lattice strain decreases rapidly with increasing thickness. We also show that the transition between the NEQ and EQ regimes is sharp and depends upon the balance between the growth rate and substrate temperature. These results suggest that the PTCDA/Au(111) system is thermodynamically described by incomplete wetting, and that strain and kinetics play an important role in determining molecular organic film characteristics. {copyright} {ital 1997} {ital The American Physical Society}

Fenter, P. [Princeton Materials Institute and Department of Physics, Princeton University, Princeton, New Jersey 08540 (United States)] [Princeton Materials Institute and Department of Physics, Princeton University, Princeton, New Jersey 08540 (United States); Schreiber, F. [Princeton Materials Institute and Department of Chemistry, Princeton University, Princeton, New Jersey 08540 (United States)] [Princeton Materials Institute and Department of Chemistry, Princeton University, Princeton, New Jersey 08540 (United States); Zhou, L. [Department of Physics, Princeton University, Princeton, New Jersey 08540 (United States)] [Department of Physics, Princeton University, Princeton, New Jersey 08540 (United States); Eisenberger, P. [Princeton Materials Institute, Princeton University, Princeton, New Jersey 08540 (United States)] [Princeton Materials Institute, Princeton University, Princeton, New Jersey 08540 (United States); [Lamont Doherty Labs, Columbia University, New York, New York 10027 (United States); Forrest, S.R. [Princeton Materials Institute, Princeton University, Princeton, New Jersey 08540 (United States)] [Princeton Materials Institute, Princeton University, Princeton, New Jersey 08540 (United States); [Center for Photonic and Optoelectronic Engineering, Princeton University, Princeton, New Jersey 08540 (United States); [Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08540 (United States)

1997-08-01T23:59:59.000Z

423

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

424

Morphology Development in Model Polyethylene via Two-Dimensional Correlation Analysis  

SciTech Connect (OSTI)

Two-dimensional (2D) correlation analysis is applied to synchrotron X-ray scattering data to characterize morphological regimes during nonisothermal crystallization of a model ethylene copolymer (hydrogenated polybutadiene, HPBD). The 2D correlation patterns highlight relationships among multiple characteristics of structure evolution, particularly the extent to which separate features change simultaneously versus sequentially. By visualizing these relationships during cooling, evidence is obtained for two separate physical processes occurring in what is known as 'irreversible crystallization' in random ethylene copolymers. Initial growth of primarily lamellae into unconstrained melt ('primary-irreversible crystallization') is distinguished from subsequent secondary lamellae formation in the constrained, noncrystalline regions between the primary lamellae ('secondary-irreversible crystallization'). At successively lower temperatures ('reversible crystallization'), growth of the crystalline reflections is found to occur simultaneously with the change in shape of the amorphous halo, which is inconsistent with the formation of an additional phase. Rather, the synchronous character supports the view that growth of frustrated crystals distorts the adjacent noncrystalline material. Furthermore, heterocorrelation analysis of small-angle and wide-angle X-ray scattering data from the reversible crystallization regime reveals that the size of new crystals is consistent with fringed-micellar structures (9 nm). Thus, 2D correlation analysis provides new insights into morphology development in polymeric systems.

D Smirnova; J Kornfield; D Lohse

2011-12-31T23:59:59.000Z

425

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

426

physics_fest_map  

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

Physics Physics Fest in CEBAF Center * The Physics Fest runs from 10:00 AM to 12:00 noon * Buses drop-off and pick-up students in the CEBAF Center circle * Buses remaining on-site will be directed to parking areas by Jefferson Lab security * Private vehicles may park in any non-reserved/non-restricted space in any of the regular parking lots * The CEBAF Center receptionist can be reached at (757) 269-7100

427

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

428

Window Properties  

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

Window Properties: measurements, simulations and ratings Window Properties: measurements, simulations and ratings Determining the thermal and optical performance of window systems is essential to researchers striving to develop improved products and to window manufacturers who need to demonstrate the energy performance of their products to architects, engineers, builders, and the general public. LBNL is involved in basic research in this field, in developing software and test procedures to analyze and quantify window heat transfer and optics, and in developing standards and rating procedures. Infrared Laboratory experiments provide surface temperature maps of window products. A companion Traversing System measures air velocity and air temperatures near the surface of test specimens. The MoWiTT facility provides accurate measurements of the heat flow through complete window systems subjected to real weather conditions. MoWiTT results have been used to validate the performance of emerging technologies and research prototypes as well as to validate thermal performance models.

429

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.

430

American Physical Society awards  

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

for 2012 are: * William Anderson, Weapons Experiments division's Shock and Detonation Physics group, for significant contributions to the field of dynamic material...

431

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

432

Internships for Physics Majors  

Broader source: Energy.gov [DOE]

Fermilab's IPM program offers ten-week summer internships to outstanding undergraduate physics majors. This program has been developed to familiarize students with opportunities at the frontiers of...

433

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

434

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

435

Nuclear Physics: Experiment Research  

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

search Nuclear Physics Program Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to...

436

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

437

Nuclear Physics Program  

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

Office Data Acquisition Group Detector & Imaging Group Electronics Group User Liaison Nuclear Physics Program HALL A Hall A wide shot of detectors Scientists from across the...

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

Handbook 2014 Department of Physics  

E-Print Network [OSTI]

Research Handbook 2014 Department of Physics S12 M01, 2 Science Drive 3, Singapore 117551 Tel: (65) 6516 2604 Fax: 6777 6126 www.physics.nus.edu.sg #12;research handbook 2014 department of physics #12;T;Profile of Faculty Members department of physics #12;7 ­ Physics Research Handbook Links »www.physics

Chaudhuri, Sanjay

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

DOCTORAL PROGRAMME MATHEMATICS AND PHYSICS, Subprogramme PHYSICS,  

E-Print Network [OSTI]

of safety analysis and development of safety culture. Selected chapters on nuclear and reactor physics doc Safety Administration, Agency for Radioactive Waste Management and other organisations in the nuclear area. The nuclear Engineering module treats nuclear technology, operation, nuclear safety, reactor

?umer, Slobodan

442

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

443

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; DAmbrosio, G; Damour, T; de Florian, D; de Gouva, 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; Grnewald, M; Gurtu, A; Gutsche, T; Haber, H E; Hagmann, C; Hayes, K G; Heffner, M; Heltsley, B; Hernndez-Rey, J J; Hcker, 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; Mnig, 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; Sjstrand, 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; Trnqvist, 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

444

Physics centre threatened  

Science Journals Connector (OSTI)

... Washington. Fusion research at the Prince-ton Plasma Physics Laboratory (PPPL), one of the principal US fusion research centres, would be shut down for ... Experimental Reac-tor, to which the United States is a sub-scriber, and on PPPL's new project, the Tokamak Physics Experiment. The TFTR (Tokamak Fusion Test Reactor) ...

Traci Watson

1992-12-10T23:59:59.000Z

445

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

446

January 2010 Physics 3300  

E-Print Network [OSTI]

the large scale currents work as they do? Why is the ocean stratified? How long does it take water to move Current measurements 8) Wind Driven Ocean Circulation Sverdrup, Munk and Stommel Western Boundary Currents to Physical Oceanography deals with the physics of the processes in the ocean, providing an integrating view

deYoung, Brad

447

Conference on Industrial Physics  

Science Journals Connector (OSTI)

... THE first Conference on Industrial Physics to be held in Great Britain took place in Manchester under the ... auspices of the Institute of Physics on March 28-30. The subject chosen for the Conference was Vacuum Devices in Research and Industry, and its chief object was to ...

HERBERT R. LANG

1935-04-06T23:59:59.000Z

448

Lowx physics  

Science Journals Connector (OSTI)

...experiment led to the concept of the nuclear atom (Geiger & Marsden 1909...for the experiments and the accelerator inherent in reducing either...the quantum numbers of the vacuum, Phil. Trans. R. Soc...graphs on Particle Physics, Nuclear Physics and Cosmology, vol...

2001-01-01T23:59:59.000Z

449

SC e-journals, Physics  

Office of Scientific and Technical Information (OSTI)

Physics Physics ACS Nano Acta Materialia Adsorption Advanced Composite Materials Advances in Condensed Matter Physics - OAJ Advances in Acoustics and Vibration - OAJ Advances in High Energy Physics - OAJ Advances in Materials Science and Engineering - OAJ Advances in Mathematical Physics - OAJ Advances in Optical Technologies - OAJ Advances in Optics and Photonics Advances in Tribology - OAJ American Journal of Physics, The Annalen der Physik Annales Henri Poincare Annals of Global Analysis and Geometry Annals of Nuclear Energy Annals of Physics Annual Review of Biophysics Annual Review of Fluid Mechanics Annual Review of Nuclear and Particle Science Annual Review of Physical Chemistry Applied Optics Applied Physics A Applied Physics Letters Applied Psychophysiology and Biofeedback

450

Morphological and electrochemical characterization of electrodeposited ZnAg nanoparticle composite coatings  

SciTech Connect (OSTI)

Silver nanoparticles with an average size of 23 nm were chemically synthesized and used to fabricate ZnAg composite coatings. The ZnAg 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 ZnAg 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 ZnAg 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

451

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

452

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

453

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

454

Argonne Physics Division - Theory Group  

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

25 May 2010 Special Day: Tuesday Jonathon Carroll 25 May 2010 Special Day: Tuesday Jonathon Carroll University of Adelaide, Australia jcarroll@physics.adelaide.edu.au QMC as a model of dense matter: from finite nuclei to hybrid stars 13 May 2010 Ivan Brida Argonne brida@anl.gov Monte Carlo calculations of beryllium isotopes and spectroscopic factors in light nuclei 11 May 2010 Special Day: Tuesday Roberto Anglani Argonne anglani@anl.gov Collective modes in the color-flavor-locked phase of quantum chromodynamics 13 April 2010 Special Day: Tuesday Special Time: 2:00PM Special Place: R-150 Toshihiko Kawano Los Alamos National Lab. kawano@lanl.gov Combining the statistical model with nuclear structure data for nuclear decay property study 1 April 2010 Special Time: 3:30PM Diana Nicmorus University of Graz, Austria

455

Argonne Physics Division - Theory Group  

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

Special Day & Time: Special Day & Time: 10:30am Tues. 19 March 2013 Alessandro Lovato Argonne Leadership Computing Facility and Physics Division lovato@anl.gov Weak Response of Cold Symmetric Nuclear Matter at Three-Body Cluster Level 24 January 2013 Elmar Biernat Universidade Técnica de Lisboa, Portugal elmar.biernat@ist.utl.pt Meson properties from two different covariant approaches Special Day: Tues. 22 January 2013 Guillaume Hupin Lawrence Livermore National Lab hupin1@llnl.gov Continuum effects in nuclear structure and reactions Special Day & Time: 10:30am, Tues. 15 January 2013 Kyle Wendt Ohio State University wendt.31@osu.edu Non-Locality in the Similarity Renormalization Group Special Time: 10:30am 10 January 2013 Vojtech Krejcirik University of Maryland vkrejcir@umd.edu

456

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. Meiner

2014-10-11T23:59:59.000Z

457

LANL | Physics | LDRD  

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

Innovation in experimental physical sciences Innovation in experimental physical sciences The Laboratory Directed Research and Development Program is the premier source of internally directed research and development funding at Los Alamos National Laboratory. Physics Division, as the major source of innovation in experimental physical science at Los Alamos, actively competes in most of the Directed Research Grand Challenges and the Exploratory Research categories. We have research in the Grand Challenges of Beyond The Standard Model, Complex Biological Systems, Information Science and Technology, Nuclear Performance, and Sensing and Measurement Science for Global Security. We are also funded to do research in the categories of Biological, Biochemical, and Cognitive Sciences, Computational Physics, Applied math and Knowledge Sciences,

458

UNIRIB: Physics Topics  

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

Physics Topics Physics Topics Research Capitalizing on the strengths of nine collaborating research universities and the world-class equipment available at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Laboratory (ORNL), the University Radioactive Ion Beam (UNIRIB) consortium is conducting research at the forefront of nuclear physics. UNIRIB, a division of the Oak Ridge Institute for Science and Education (ORISE), brings together researchers from around the world to study the short-lived, exotic nuclei that are involved in astrophysical processes. UNIRIB researchers participate in many of the nuclear physics experiments carried out at HRIBF. UNIRIB researchers are presently leading the following physics topics. To view these files, you will need the Adobe Reader, which is available free

459

The electronic properties of graphene  

Science Journals Connector (OSTI)

This article reviews the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two-dimensional Dirac-like electronic excitations. The Dirac electrons can be controlled by application of external electric and magnetic fields, or by altering sample geometry and/or topology. The Dirac electrons behave in unusual ways in tunneling, confinement, and the integer quantum Hall effect. The electronic properties of graphene stacks are discussed and vary with stacking order and number of layers. Edge (surface) states in graphene depend on the edge termination (zigzag or armchair) and affect the physical properties of nanoribbons. Different types of disorder modify the Dirac equation leading to unusual spectroscopic and transport properties. The effects of electron-electron and electron-phonon interactions in single layer and multilayer graphene are also presented.

A. H. Castro Neto; F. Guinea; N. M. R. Peres; K. S. Novoselov; A. K. Geim

2009-01-14T23:59:59.000Z

460

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

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

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

462

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

463

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

464

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 Protections (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 Hanfords 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

465

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

466

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...

467

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

468

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

469

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

470

PHYSICAL AND CHEMICAL PROPERTIES OF COMBUSTION GENERATED SOOT  

E-Print Network [OSTI]

gases at STP detected with CNC and EASA. Sampling conditionswith certainty [71]. CNC EASA a Q) a a. E Q) "t- ogases at STPdetected with. CNC and. EASA. RH = 70%, T = 298

Toossi, Reza

2010-01-01T23:59:59.000Z

471

Chemical and physical properties of short rotation tree species  

Science Journals Connector (OSTI)

Short rotation forestry (SRF) can be defined as a form of...1999; Weih 2004). SRF has achieved greater awareness, especially in Europe...2009). The directive steers the production of raw materials in a way that c...

Janne Pesonen; Toivo Kuokkanen

2014-11-01T23:59:59.000Z

472

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

473

Relationship between physical, chemical and processing properties of rice  

E-Print Network [OSTI]

gelatinization temperature and a low amylose content while Taichung (Native) 1 has a low gelatinization tempera- ture and high amylose content. These workers ( 19) concluded that generally, the greater the amylase content, the higher the gelati- nization... gelatinization temperature and a low amylose content while Taichung (Native) 1 has a low gelatinization tempera- ture and high amylose content. These workers ( 19) concluded that generally, the greater the amylase content, the higher the gelati- nization...

Parial, Lucila Beatrice Calupitan

2012-06-07T23:59:59.000Z

474

Defective Interfering Particles of Poliovirus I. Isolation and Physical Properties  

Science Journals Connector (OSTI)

...gel, and electrophoresis was car- ried out at 5 ma/gel for...anode is at the right. POLIO DEFECTIVE PARTICLES TABLE 1. Annealing of unlabeled standard and defective intferfering [DI(I)] ribonucleic...formed by replication of the defective RNA by a mechanism similar...

Charles N. Cole; Donna Smoler; Eckard Wimmer; David Baltimore

1971-04-01T23:59:59.000Z

475

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

?urovec, Michal

476

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

477

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

478

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

479

Physical Properties of Matter in the Liquid and Gaseous States*  

Science Journals Connector (OSTI)

... 8... 40-66... 35 -44... (B) 256-8... 9975 44*29) From series A we deduce for a unit at 13 ...

1875-08-19T23:59:59.000Z

480

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

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.


481

COLLOQUIUM: Exploring the Physical Properties of Matter in Extreme...  

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

and developed into an unlimited carbon-free energy source. Recently, experiments on laser-driven targets have begun on the National Ignition Facility to reach temperatures...

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

Microwave Properties of Ice-Phase Hydrometeors for Radar and Radiometers: Sensitivity to Model Assumptions  

Science Journals Connector (OSTI)

A simplified framework is presented for assessing the qualitative sensitivities of computed microwave properties, satellite brightness temperatures, and radar reflectivities to assumptions concerning the physical properties of ice-phase ...

Benjamin T. Johnson; Grant W. Petty; Gail Skofronick-Jackson

2012-12-01T23:59:59.000Z

484

Toward a constructive physics  

SciTech Connect (OSTI)

We argue that the discretization of physics which has occurred thanks to the advent of quantum mechanics has replaced the continuum standards of time, length and mass which brought physics to maturity by counting. The (arbitrary in the sense of conventional dimensional analysis) standards have been replaced by three dimensional constants: the limiting velocity c, the unit of action h, and either a reference mass (eg m/sub p/) or a coupling constant (eg G related to the mass scale by hc/(2..pi..Gm/sub p//sup 2/) approx. = 1.7 x 10/sup 38/). Once these physical and experimental reference standards are accepted, the conventional approach is to connect physics to mathematics by means of dimensionless ratios. But these standards now rest on counting rather than ratios, and allow us to think of a fourth dimensionless mathematical concept, which is counting integers. According to constructive mathematics, counting has to be understood before engaging in the practice of mathematics in order to avoid redundancy. In its strict form constructive mathematics allows no completed infinities, and must provide finite algorithms for the computation of any acceptable concept. This finite requirement in constructive mathematics is in keeping with the practice of physics when that practice is restricted to hypotheses which are testable in a finite time. In this paper we attempt to outline a program for physics which will meet these rigid criteria while preserving, in so far as possible, the successes that conventional physics has already achieved.

Noyes, H.P.; Gefwert, C.; Manthey, M.J.

1983-06-01T23:59:59.000Z

485

New Morphological Paradigm Uncovered in Organic Solar Cells  

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

New Morphological Paradigm New Morphological Paradigm Uncovered in Organic Solar Cells New Morphological Paradigm Uncovered in Organic Solar Cells Print Wednesday, 27 April 2011 00:00 Organic solar cells are made of light, flexible, renewable materials; they require simple and inexpensive processing steps and could produce an economically competitive and environmentally friendly energy source. Understanding the fundamentals of organic solar cell function is therefore vital to uncovering their maximum potential. Models describing critical device functions such as charge separation and transport often depend on simplistic morphological assumptions, including discrete interfaces between pure electron donor and acceptor materials. In contrast, recent spectroscopy and scattering studies conducted by North Carolina State University and Cambridge University researchers at ALS Beamlines 5.3.2 and 7.3.3 found a substantial amount of molecular mixing between model materials (polymers and fullerenes) currently used in bulk heterojunction (BHJ) organic solar cells. This suggests that the amorphous portions of these devices do not have pure domains, and the paradigm of device operation may need to be refined to accommodate this newly discovered complexity.

486

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

487

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

488

MORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL  

E-Print Network [OSTI]

a relatively inexpensive option for the future solar cell technology, provided its efficiency increases beyondMORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL Biswajit Ray, Pradeep, West Lafayette, Indiana, USA ABSTRACT Polymer based bulk heterostructure (BH) solar cell offers

Alam, Muhammad A.

489

Combining Morphological and Ngram Evidence for Monolingual Document Retrieval  

E-Print Network [OSTI]

Combining Morphological and Ngram Evidence for Monolingual Document Retrieval Jaap Kamps Introduction It's a widely held belief that deep linguistic anal- ysis does more harm than it helps in document that is appropriate for document retrieval. Especially for non-English European languages there is ev- idence

Monz, Christof

490

Morphology and paleoclimatic significance of Pleistocene Lake Bonneville spits  

E-Print Network [OSTI]

information about the continental interior of North America. Detailed descriptions of Lake Bonneville featuresMorphology and paleoclimatic significance of Pleistocene Lake Bonneville spits Paul W. Jewell Available online 28 August 2007 Abstract Pleistocene Lake Bonneville of western Utah contains a variety

Johnson, Cari

491

LANL | Physics | Quantum Information  

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

Breakthrough quantum information Breakthrough quantum information science and technology Physics Division's quantum information science and technology capability supports present and future Laboratory missions in cyber-security, sensing, nonproliferation, information science, and materials. Collaborating with researchers throughout Los Alamos and leading institutions in the nation, Physics Division scientists are involved in projects in quantum communications, including quantum key distribution and quantum-enabled security and networking, and in quantum cold-atom physics. Recent fundamental science results include the ability to "paint" potentials that can trap Bose-Einstein condensates into geometric forms, such as the toroidal ring of clusters, the density of which is measured in

492

Martinus Veltman, the Electroweak Theory, and Elementary Particle Physics  

Office of Scientific and Technical Information (OSTI)

Martinus Veltman, the Electroweak Theory, and Elementary Particle Physics Resources with Additional Information Martinus Veltman Courtesy University of Michigan Martinus J.G. Veltman, the John D. MacArthur Professor Emeritus of Physics at the University of Michigan, was awarded the 1999 Nobel Prize in physics "for elucidating the quantum structure of electroweak interactions in physics". 'Veltman shares [the] Nobel Prize in physics with his former graduate student, Gerardus 't Hooft, who is now a professor of physics at the University of Utrecht. They received the prize for work done in the 1960s and 1970s that made it possible for physicists to mathematically predict properties of the sub-atomic particles that make up all matter in the universe and the forces that hold these particles together.

493

Physics 112 Thermodynamics and Statistical Physics Winter 2000 COURSE OUTLINE  

E-Print Network [OSTI]

Physics 112 Thermodynamics and Statistical Physics Winter 2000 COURSE OUTLINE TOPIC READINGS 1 and probability theory can be found in Chapter 16 of Mathematical Methods in the Physical Sciences, by Mary L

California at Santa Cruz, University of

494

Physics Topics - Rotating Wall Machine - UW Plasma Physics  

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Physics Topics UW Madison Line Tied Reconnection Experiment Physics Topics LTRX HomeResearch MissionLTRX DevicePhysics TopicsDiagnosticsLTRX GalleryLTRX People CPLA Home Directory...

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PHYSICS WITH AND PHYSICS OF COLLIDING ELECTRON BEAMS  

E-Print Network [OSTI]

contributed so much to the physics of colliding beams, theyto reap so little from the physics with colliding beams.Conference on High-Energy Physics, Vienna" September 1968 (

Pellegrini, Claudio

2008-01-01T23:59:59.000Z

496

PHYSICS & ASTRONOMY GRADUATE STUDENT HANDBOOK DEPARTMENT OF PHYSICS & ASTRONOMY  

E-Print Network [OSTI]

PHYSICS & ASTRONOMY GRADUATE STUDENT HANDBOOK DEPARTMENT OF PHYSICS & ASTRONOMY UNIVERSITY OF UTAH Fall 2012 Version 2012 .................................................................................... 11 3.1. Ph.D. in Physics 12 3.1.1. Astronomy & Astrophysics

Tipple, Brett

497

Influence of molecular arrangement and morphology on optical spectra of oligothiophene heterostructures grown by organic molecular-beam deposition  

Science Journals Connector (OSTI)

Heterostructures of quaterthiophene and sexithiophene were grown by organic molecular beam deposition both on fused silica and on potassium acid phthalate (001) single crystals. The influence of both the substrate and the order of deposition on the sample morphology and, in turn, on their optical properties has been investigated. In particular, by changing the deposition conditions, the heterostructures have been found to grow either in an island or in a layer by layer mode. The emission spectra of the latter show the individual quaterthiophene and sexithiophene bands, while the spectra of the island samples are related to effects of the boundary between quaterthiophene and sexithiophene.

S. Tavazzi; D. Besana; A. Borghesi; F. Meinardi; A. Sassella; R. Tubino

2002-04-26T23:59:59.000Z

498

LHC Physics Center | (none)  

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

Physics Center Physics Center Fermilab Home Visit LPC Physics Programs LPC Guest and Visitors HATS@LPC, Workshops and CMSDAS Jet-Substructure HATS CMS Data Analysis School 2013 CMS Data Analysis School 2012 CMS Data Analysis School 2011 EJTERM (CMS Data Analysis School 2010) Confronting Theory with Experiment: November 2011 Standard Model Benchmarks at the Tevatron and LHC Standard Model Benchmarks at High-Energy Hadron Colliders GED workshop 20-22 Aug, 2012 Topic of the Week Upcoming Past Speakers Archive Program Info LPC Physics Forum LPC Snowmass Efforts The INFIERI Project Fellows LPC Fellows Program Newsletter - LPC Fellows LPC Fellows - 2014 LPC Fellows - 2013 LPC Fellows - 2012 LPC Fellows - 2011 Community Faces of the LPC LPC Fellows - Current LPC Coffee Hour Calendar LPC Conf. Room Calendar

499

Courses on Beam Physics  

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

Beam Physics Beam Physics The following is an incomplete listing of course available for beam physics. United States Particle Accelerator School The US Particle Accelerator School provides educational programs in the field of beams and their associated accelerator technologies not otherwise available to the community of science and technology. Joint Universities Accelerator School Each year JUAS provides a foundation course on accelerator physics and associated technologies. The US-CERN-Japan-Russia Joint Accelerator School The purpose of the US-CERN-Japan-Russia joint school is to better our relations by working together on an advanced topical course every two years, alternating between the U.S., western Europe, Japan and Russia. The last set of courses focused on the frontiers of accelerator technology in

500

Physical process Mechanical mechanisms  

E-Print Network [OSTI]

1 Physical process Generation · Mechanical mechanisms F = m·a · Electric/Magnetic mechanisms F ­ Quadrupoles......shear stress fluctuations ­ High order poles...... phys. interpretation difficult Governing

Berlin,Technische Universität