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1

Physical Properties  

Science Conference Proceedings (OSTI)

"The Thermophysical Properties of Bulk Metallic Glass-Forming Liquids" ( Overview), R. Busch, July 2000, pp. 39-42. "Using High-Temperature Superconductors...

2

Physical Properties of Metals  

Science Conference Proceedings (OSTI)

Table 1   Some physical properties of metals at room temperature...0.176 ? ? ? Tantalum 16.6 0.1391 6.5 54.4 135.0 Technetium 11.5 ? 7.05 50.2 185.0 Tellurium 6.237 0.201 18.2 5.98??6.02 1??50 Terbium 8.230 0.1818 10.3 11.1 1150 Thallium 11.872 0.130 28 47 150 Thorium 11.8 0.11308 10.9 77 157 Thulium 9.321 0.1598 13.3 16.9 676 Tin 5.765 0.205 21 62.8 110 Titanium 4.507...

3

Effects of internal mixing and aggregate morphology on optical properties  

NLE Websites -- All DOE Office Websites (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.

4

Physical Properties of Gas Hydrates: A Review  

SciTech Connect

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

5

Physical Properties of Ionic Liquids  

NLE Websites -- All DOE Office Websites (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

6

Online Particle Physics Information - Particles & Properties...  

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

Particles & Properties Data Review of Particle Physics (RPP) A biennial comprehensive review summarizing much of the known data about the field of particle physics produced by the...

7

Effects of internal mixing and aggregate morphology on optical properties  

NLE Websites -- All DOE Office Websites (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.

8

Physical Properties Data Center Selected Data...  

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

Physical Properties Data Center Selected Data Sets and Data Collections Complete data set listings available through each individual data center. For more information about NASA's...

9

East Asian Summer monsoon precipitation systems: rainfall characteristics, storm morphologies and convective properties.  

E-Print Network (OSTI)

??This study attempts to characterize the particular convection type, namely storm morphologies, convective properties, and microphysics, of different weather regimes within the East Asian Summer (more)

Xu, Weixin

2011-01-01T23:59:59.000Z

10

Modeling of Physical Properties of Composite Materials  

E-Print Network (OSTI)

Recent progress in three different areas involving the modeling of the physical properties of composites is reviewed. These include: (i) theoretical approaches to microstructure/property relations; (ii) X-ray microtomography, an imaging technique that enables one to obtain high-resolution three-dimensional microstructural phase information of a composite sample in a non-intrusive manner; and (ii) topology optimization, a promising numerical technique that enables one to design composites with tailored material properties. Current limitations and future research needs are described.

S. Torquato

2000-01-01T23:59:59.000Z

11

Physical Properties of Hanford Transuranic Waste  

SciTech Connect

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

Berg, John C.

2010-03-25T23:59:59.000Z

12

Morphology and properties of aminosilane grafted MWCNT/polyimide nanocomposites  

Science Conference Proceedings (OSTI)

This investigation presents a novel method for modifying multiwalled carbon nanotubes (MWCNTs). The morphology, electrical resistivity, and percolation threshold of MWCNT/Polyimide nanocomposites were studied. Acid-modified MWCNTs reacted with (3-aminopropyl)triethoxysilane ...

Siu-Ming Yuen; Chen-Chi M. Ma; Chin-Lung Chiang; Chih-Chun Teng

2008-01-01T23:59:59.000Z

13

Hanford Waste Physical and Rheological Properties: Data and Gaps  

SciTech Connect

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

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

2012-03-01T23:59:59.000Z

14

Morphological computation and morphological control: Steps toward a formal theory and applications  

Science Conference Proceedings (OSTI)

Morphological computation can be loosely defined as the exploitation of the shape, material properties, and physical dynamics of a physical system to improve the efficiency of a computation. Morphological control is the application of morphological computing ... Keywords: Morphological computation, analogue computation, embodiment, prosthetics, systems medicine

Rudolf M. Fchslin; Andrej Dzyakanchuk; Dandolo Flumini; Helmut Hauser; Kenneth J. Hunt; Rolf H. Luchsinger; Benedikt Reller; Stephan Scheidegger; Richard Walker

2013-01-01T23:59:59.000Z

15

Control of Wire Rod Physical Properties Like Ultimate Tensile ...  

Science Conference Proceedings (OSTI)

Sep 1, 2001 ... Control of Wire Rod Physical Properties Like Ultimate Tensile Strength and Elongation by Close Monitoring of Rolling Energy Input

16

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... Objective: To provide industry with high quality thermophysical property surfaces for mixtures of hydrogen and methane over broad ranges of ...

17

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... transport properties data for alternative refrigerant mixtures impedes model refinement and the use of such mixtures in HVAC equipment. ...

18

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... properties. All the data on benzene, for example, are gathered together, rather than all the data on heat of combustion. ...

19

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... Oil and Gas Res., Russia). Objective: To measure accurately the thermophysical properties of natural gas mixtures and develop standard reference ...

20

Investigating physical properties of novel carbon-based materials  

E-Print Network (OSTI)

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

Demir, Nasser Soliman, 1982-

2004-01-01T23:59:59.000Z

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

A Summary of the Physical Properties of Cirrus Clouds  

Science Conference Proceedings (OSTI)

A review of existing literature is made to determine typical values for the physical properties cirrus clouds. The properties examined (with typical values and measured ranges) are cloud-center altitude (9 km, 4 to 20 km), cloud thickness (1.5 km,...

David R. Dowling; Lawrence F. Radke

1990-09-01T23:59:59.000Z

22

Corium Physical Properties for Severe Accident R and D  

SciTech Connect

Corium is a mixture formed - in the hypothetical case of a severe accident - of molten core and products from the decomposition of the internal structures, the vessel and the concrete. Before any calculation, any modelling, any experimental interpretation can be made, it is necessary to estimate the corium physical properties. Corium being a multicomponent mixture, special attention has been given at CEA to the mixing laws for multi-phase, multi-constituent mixtures. Compared to the previous database, considerable progress in characterizing of corium constituents physical properties has been achieved. The thermo-physical data of corium constituents for pure components and mixtures and the different physical laws that are recommended by experts are now implemented in the CORPRO (Corium Properties) database. (authors)

Journeau, C.; Piluso, P.; Frolov, K.N. [CEA Cadarache, Severe Accident Mastering Laboratory (DEN/DTN/STRI/LMA), 13108 St Paul lez Durance (France)

2004-07-01T23:59:59.000Z

23

Characterization of PEO-based composite cathodes. I. Morphological, thermal, mechanical and electrical properties  

SciTech Connect

This report describes the fabrication and characterization of polymer-based composite cathode membranes intended for use in polymer-electrolyte batteries operating at moderate temperatures (60--100 C). The present work is focused on the determination of morphological, thermal, mechanical, and electrical properties of PEO-based composite cathodes. The work was developed within the Advanced Lithium Polymer Electrolyte project (ALPE), an Italian integrated project devoted to the realization of lithium polymer batteries for electric vehicle applications.

Appetecchi, G.B.; Carewska, M.; Alessandrini, F.; Prosini, P.P.; Passerini, S.

2000-02-01T23:59:59.000Z

24

A Simple Parameterization Scheme for Joint Statistics of Cloud Field Morphology and Physical Parameters  

Science Conference Proceedings (OSTI)

A simple parameterization scheme for the joint statistics of cloud field morphology and other cloud parameters is discussed. The statistics of the cloud field morphology an obtained from the NOAA-9 AVHRR using the Hit or Miss image ...

T. J. Davis

1990-08-01T23:59:59.000Z

25

Effects of Structural Modification on Ionic Liquid Physical Properties  

NLE Websites -- All DOE Office Websites (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

26

Electrical Insulation Paper and Its Physical Properties at Cryogenic Temperatures  

Science Conference Proceedings (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; Polyzos, Georgios [ORNL; Sauers, Isidor [ORNL; James, David Randy [ORNL

2011-01-01T23:59:59.000Z

27

Physical and Mechanical Properties of Copper and Copper Alloys  

SciTech Connect

High strength, high conductivity copper alloys are prime candidates for high heat flux applications in fusion energy systems. This chapter reviews the physical and mechanical properties of pure copper and copper alloys with the focus on precipitation-hardened CuCrZr and dispersion-strengthened CuAl25 alloys. The effect of neutron irradiation on copper and copper alloys is reviewed in terms of radiation effects on physical properties and mechanical properties (tensile properties, fracture toughness, fatigue and creep-fatigue), irradiation creep and void swelling. The effect of irradiation on the microstructure of copper and copper alloys and dislocation channeling is also presented. Joining techniques for copper alloys in fusion plasma facing components are briefly discussed.

Li, Meimei [Argonne National Laboratory (ANL); Zinkle, Steven J [ORNL

2012-01-01T23:59:59.000Z

28

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

29

Microstructure, Morphology, and Nanomechanical Properties Near Fine Holes Produced by Electro-Discharge Machining  

Science Conference Proceedings (OSTI)

Fine holes in metal alloys are employed for many important technological purposes, including cooling and the precise atomization of liquids. For example, they play an important role in the metering and delivery of fuel to the combustion chambers in energy-efficient, low-emissions diesel engines. Electro-discharge machining (EDM) is one process employed to produce such holes. Since the hole shape and bore morphology can affect fluid flow, and holes also represent structural discontinuities in the tips of the spray nozzles, it is important to understand the microstructures adjacent to these holes, the features of the hole walls, and the nanomechanical properties of the material that was in some manner altered by the EDM hole-making process. Several techniques were used to characterize the structure and properties of spray-holes in a commercial injector nozzle. These include scanning electron microscopy, cross-sectioning and metallographic etching, bore surface roughness measurements by optical interferometry, scanning electron microscopy, and transmission electron microscopy of recast EDM layers extracted with the help of a focused ion beam.

Blau, Peter Julian [ORNL; Howe, Jane Y [ORNL; Coffey, Dorothy W [ORNL; Trejo, Rosa M [ORNL; Kenik, Edward A [ORNL; Jolly, Brian C [ORNL; Yang, Nan [Caterpillar Inc.

2012-01-01T23:59:59.000Z

30

Physical-chemical property based sequence motifs and methods regarding same  

DOE Patents (OSTI)

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

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

2008-09-09T23:59:59.000Z

31

AN HST/WFC3-IR MORPHOLOGICAL SURVEY OF GALAXIES AT z = 1.5-3.6. I. SURVEY DESCRIPTION AND MORPHOLOGICAL PROPERTIES OF STAR-FORMING GALAXIES  

SciTech Connect

We present the results of a 42-orbit Hubble Space Telescope Wide-Field Camera 3 (HST/WFC3) survey of the rest-frame optical morphologies of star-forming galaxies with spectroscopic redshifts in the range z = 1.5-3.6. The survey consists of 42 orbits of F160W imaging covering {approx}65 arcmin{sup 2} distributed widely across the sky and reaching a depth of 27.9 AB for a 5{sigma} detection within a 0.2 arcsec radius aperture. Focusing on an optically selected sample of 306 star-forming galaxies with stellar masses in the range M{sub *} = 10{sup 9}-10{sup 11} M{sub Sun }, we find that typical circularized effective half-light radii range from {approx}0.7 to 3.0 kpc and describe a stellar mass-radius relation as early as z {approx} 3. While these galaxies are best described by an exponential surface brightness profile (Sersic index n {approx} 1), their distribution of axis ratios is strongly inconsistent with a population of inclined exponential disks and is better reproduced by triaxial stellar systems with minor/major and intermediate/major axis ratios {approx}0.3 and 0.7, respectively. While rest-UV and rest-optical morphologies are generally similar for a subset of galaxies with HST/Advanced Camera for Surveys imaging data, differences are more pronounced at higher masses M{sub *} > 3 Multiplication-Sign 10{sup 10} M{sub Sun }. Finally, we discuss galaxy morphology in the context of efforts to constrain the merger fraction, finding that morphologically identified mergers/non-mergers generally have insignificant differences in terms of physical observables such as stellar mass and star formation rate, although merger-like galaxies selected according to some criteria have statistically smaller effective radii and correspondingly larger {Sigma}{sub SFR}.

Law, David R.; Shapley, Alice E.; Nagy, Sarah R. [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States); Steidel, Charles C. [Department of Astronomy, California Institute of Technology, MS 249-17, Pasadena, CA 91125 (United States); Reddy, Naveen A. [National Optical Astronomy Observatories, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Erb, Dawn K., E-mail: drlaw@astro.ucla.edu, E-mail: aes@astro.ucla.edu, E-mail: snagy@ucla.edu, E-mail: ccs@astro.caltech.edu [Department of Physics, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, WI 53201 (United States)

2012-01-20T23:59:59.000Z

32

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

E-Print Network (OSTI)

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

Seppanen, Brent

1983-01-01T23:59:59.000Z

33

Computational Studies of Physical Properties of Boron Carbide  

SciTech Connect

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

34

The Effect of Hydrogen Carrier Gas on the Morphological Evolution and Material Properties of GaN on Sapphire  

DOE Green Energy (OSTI)

In-situ optical reflectance is used to monitor the morphological evolution of the two-step GaN growth on sapphire. The amount of H{sub 2} carrier gas used in the growth is observed to strongly influence the morphological evolution of the low temperature buffer layer and the subsequent high temperature nucleation behavior, which in turn affects the structural and electrical properties of the GaN epitaxial films. The optical reflectance transients correlate with the sizes and distributions of nuclei as observed by AFM.

Ng, T.B.; Han, J.; Biefeld, R.M.; Zolper, J.C.; Crawford, M.H.; Follstaell, D.M.

1998-01-01T23:59:59.000Z

35

PHYSICAL PROPERTIES OF COOLING PLASMA IN QUIESCENT ACTIVE REGION LOOPS  

Science Conference Proceedings (OSTI)

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

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

2009-04-10T23:59:59.000Z

36

Physical and mechanical properties of bituminous mixtures containing oil shales  

Science Conference Proceedings (OSTI)

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

Katamine, N.M.

2000-04-01T23:59:59.000Z

37

Mechanical and physical properties of uranium. Chapter 8 of nuclear metallurgy lectures  

SciTech Connect

A knowledge of the mechanical and physical properties of uranium is important in understanding its pile behavior. The effects of irradiation on the properties of uranium will be dealt with in another chapter. However, it is important to know and understand the pre-irradiation properties of uranium prior to investigating the effects of irradiation. This chapter discusses the mechanical and physical properties of uranium.

Hueschen, R.E.

1955-05-10T23:59:59.000Z

38

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,

39

Morphology and properties of sputtered HfN layers as a function of substrate temperature and sputtering atmosphere  

SciTech Connect

HfN layers were prepared by reactive rf-magnetron sputtering onto polished flat high speed steel (HSS) surfaces. Rectangular samples were mounted on a special holder providing temperatures in the range of 775 to 300 K along the length of the sample. The HfN layers were deposited at various total pressures and different N/sub 2//Ar ratios. The film morphology and composition was studied by scanning electron microscopy (SEM) and Auger electron spectroscopy (AES), respectively, and correlated with mechanical properties like microhardness and adhesion. The results are discussed with respect to the sputtering conditions.

Jehn, H.A.; Kopacz, U.; Hofmann, S.

1985-11-01T23:59:59.000Z

40

Structural and Morphological Properties of Carbon Supports: Effect of Catalyst degradation, ECS Transactions 33(1), 425 (2010)  

DOE Green Energy (OSTI)

The object of this work was to identify correlations between performance losses of Pt electrocatalysts on carbon support materials and the chemical and morphological parameters that describe them. Accelerated stress testing, with an upper potential of 1.2 V, was used to monitor changes to cathode properties, including kinetic performance and effective platinum surface area losses. The structure and chemical compositions were studied using X-ray Photoelectron Spectroscopy and Scanning Electron Microscopy coupled with Digital Image Processing. As this is an ongoing study, it is difficult to draw firm conclusions, though a trend between support surface area overall performance loss was found to exist.

A. Patel; K. Artyushkova; P. Atanassov; A. Young; M. Dutta; Z. Ahmad; V. Colbow; S. Wessel; S. Ye

2011-04-01T23:59:59.000Z

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

Physical Properties of HWCVD Microcrystalline Silicon Thin Films: Preprint  

DOE Green Energy (OSTI)

This conference paper describes Microcrystalline silicon films were grown with different thicknesses and different hydrogen dilution ratios on glass and Si substrates. Some films were deposited with a seed layer, whereas others were deposited directly on the substrate. We used atomic force microscopy, scanning electron microscopy, and X-ray diffraction to study the morphology and crystalline structure of the samples. We did not find a significant influence of the different substrates on the morphology or crystalline structure. The presence of the seed layer enhanced the crystallization process, decreasing the amount of amorphous layer present in the films. The microstructure of most films was formed by grains, with a subgrain structure. Films grown with low values of dilution ratio had (220) texture and elongated grains, whereas films deposited with high values of dilution ratio were randomly oriented and had an irregular shape.

Moutinho, H. R.; Romero, M. J.; Jiang, C. S.; Xu, Y.; Nelson, B. P.; Jones, K. M.; Mahan, A. H.; Al-Jassim, M. M.

2002-05-01T23:59:59.000Z

42

Local Structure and Its Relationship to the Physical Properties of ...  

Science Conference Proceedings (OSTI)

In practice, materials with this structure display a wide variety of properties, ranging from pronounced NTE through to strong positive thermal expansion. We will...

43

Physical Properties of Pyridinium Fluorohydrogenate, Pyr(HF) ...  

Science Conference Proceedings (OSTI)

... and super- capacitors, in electroplating baths, as designer solvents, and as reaction media. A few of the desired properties of a super-capacitor ...

2006-07-20T23:59:59.000Z

44

J13: Enhancing the Physical and Chemical Properties of Ceramic ...  

Science Conference Proceedings (OSTI)

A10: Mechanical Properties and Weld-Ability of Laser Welded Metal Bellows ..... J5: Electrical Conductivity of Diesel-Biodiesel Blends Evaluated by the...

45

TRC Group - NIST, Physical and Chemical Properties Division  

Science Conference Proceedings (OSTI)

... properties of hydrocarbons and related sulfur derivatives of hydrocarbons present in petroleum and coal related substances as ... Price: $1,890.00. ...

46

Practical Handbook of Soybean Processing and UtilizationChapter 3 Physical Properties of Soybeans and Soybean Products  

Science Conference Proceedings (OSTI)

Practical Handbook of Soybean Processing and Utilization Chapter 3 Physical Properties of Soybeans and Soybean Products Processing eChapters Processing AOCS Press Downloadable pdf of Chapter 3 Physical Properties

47

CRC handbook of physical properties of rocks. Volume III  

Science Conference Proceedings (OSTI)

This book presents topics on: Density of rocks and minerals, includes histograms of density ranges; elastic constants of minerals, elastic moduli, thermal properties; inelastic properties, strength and rheology for rocks and minerals, rock mechanics and friction, and stress-strain relations; radioactivity, decay constants and heat production of isotope systems in geology; seismic attenuation, in rocks, minerals, and the earth, with application to oil exploration and terrestrial studies; and index.

Carmichael, R.S.

1984-01-01T23:59:59.000Z

48

Statistical evaluation of physical properties in Area 12, Nevada Test Site, using the USGS/DNA Storage and Retrieval System  

SciTech Connect

The US Geological Survey/Defense Nuclear Agency Physical-Properties Storage and Retrieval System was used to generate tables displaying the basic statistics of physical-properties data sets sorted according to geologic identification and tunnel complex in Rainier and Aqueduct Mesas. An approximate procedure to statistically evaluate the significance of geologic identifier versus physical-property average value was developed. Results of this procedure indicate that no conclusive consistent relation exists between geologic identifier and physical-properties average value.

Brethauer, G.E.; Magner, J.E.; Miller, D.R.

1980-05-01T23:59:59.000Z

49

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

Open Energy Info (EERE)

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...

50

Seasonal Variation of the Physical Properties of Marine Boundary Layer Clouds off the California Coast  

Science Conference Proceedings (OSTI)

Marine boundary layer (MBL) clouds can significantly regulate the sensitivity of climate models, yet they are currently poorly simulated. This study aims to characterize the seasonal variations of physical properties of these clouds and their ...

Wuyin Lin; Minghua Zhang; Norman G. Loeb

2009-05-01T23:59:59.000Z

51

The physical and chemical properties of heteronanotubes Paola Ayala*  

E-Print Network (OSTI)

carbon nanotubes with low B or N doping to the new physics behind boron nitride nanotubes are covered doping: CNx and CBy CNTs 1846 B. Novel heteronanotubes of B, C, and N 1847 1. BC2N 1848 2. BC3 1848 3. C3 of carbon atoms distributed as in a honeycomb lattice graphene . If we consider a one-layered tube, we

Wu, Zhigang

52

Effective Interaction Potentials and Physical Properties of Complex Plasmas  

SciTech Connect

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

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

2009-11-10T23:59:59.000Z

53

Physical properties of blazar jets from VLBI observations  

E-Print Network (OSTI)

(abridged) Relativistic jets, formed in the vicinity of central supermassive black holes in AGN, show ample evidence connecting them to physical conditions in the accretion disc and broad-line region. The jets are responsible for a large fraction of non-thermal continuum emission (particularly during powerful flares), which makes understanding their physics an important aspect of studies of blazars characterised by profound flaring activity arising from extremely compact regions. Imaging and polarimetry of radio emission on milliarcsecond scales provided by very long baseline interferometry (VLBI) offers a range of possibilities for studying ultra-compact regions in relativistic jets and relating them to main manifestations of the blazar activity in AGN. Simultaneous monitoring of optical/high energy variability and evolution of parsec-scale radio structures yields arguably the most detailed picture of the relation between acceleration and propagation of relativistic flows and non-thermal continuum generation...

Lobanov, Andrei

2010-01-01T23:59:59.000Z

54

Development of an ASPEN PLUS physical property database for biofuels components  

DOE Green Energy (OSTI)

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

Wooley, R.J.; Putsche, V.

1996-04-01T23:59:59.000Z

55

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

SciTech Connect

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

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

2008-01-01T23:59:59.000Z

56

Physical properties of single crystalline BaSn{sub 5}  

SciTech Connect

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

57

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

58

Physical Property Modeling of Concentrated Cesium Eluate Solutions, Part I - Derivation of Models  

SciTech Connect

Major analytes projected to be present in the Hanford Waste Treatment Plant cesium ion-exchange eluate solutions were identified from the available analytical data collected during radioactive bench-scale runs, and a test matrix of cesium eluate solutions was designed within the bounding concentrations of those analytes. A computer model simulating the semi-batch evaporation of cesium eluate solutions was run in conjunction with a multi-electrolyte aqueous system database to calculate the physical properties of each test matrix solution concentrated to the target endpoints of 80% and 100% saturation. The calculated physical properties were analyzed statistically and fitted into mathematical expressions for the bulk solubility, density, viscosity, heat capacity and volume reduction factor as a function of temperature and concentration of each major analyte in the eluate feed. The R{sup 2} of the resulting physical property models ranged from 0.89 to 0.99.

Choi, A.S.; Pierce, R. A.; Edwards, T. B.; Calloway, T. B.

2005-09-15T23:59:59.000Z

59

Estimation of Physical Properties of AN-107 Cesium and Technetium Eluate Blend  

SciTech Connect

The objective of this study, as defined in the associated test specifications and task technical and quality assurance plan, was to estimate all the physical properties that are required to design the storage and transport facilities for the concentrated cesium and technetium eluates. Specifically, the scope of this study included: (1) modeling of the aqueous electrolyte chemistry of Tank 241-AN-107 Cs and Tc eluate evaporators, (2) process modeling of semi-batch and continuous evaporation operations, (3) determination of the operating vacuum and target endpoint of each evaporator, (4) calculation of the physical properties of the concentrated Cs and Tc eluate blend, and (5) development of the empirical correlations for the physical properties thus estimated.

Choi, A.S.

2001-06-12T23:59:59.000Z

60

Crystallization and Solidification Properties Chapter 4 Effects of Tempering on Physical Properties of Shortenings Based on BinaryBlends of Palm Oil & Anhydrous Milk Fat During Storage  

Science Conference Proceedings (OSTI)

Crystallization and Solidification Properties Chapter 4 Effects of Tempering on Physical Properties of Shortenings Based on BinaryBlends of Palm Oil & Anhydrous Milk Fat During Storage Health Nutrition Biochemistry eChapters Health - Nu

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

Optimizing the physical and technological properties of cement additives in concrete mixtures  

Science Conference Proceedings (OSTI)

In this article, the physical and technological properties of phosphogypsum, borogypsum, sludges and reactor residue recovered from boric acid factor, lignite ashes, and steel making slags samples were investigated. Physical test results obtained from these cement additives were studied with comparison to the control mix. The optimal values of cementitious additives are replacement of cement and/or of replacement of natural aggregates were conducted.

Demirbas, A. [Technical Univ. of Black Sea, Akcaabat-Trabzon (Turkey). Educational Faculty] [Technical Univ. of Black Sea, Akcaabat-Trabzon (Turkey). Educational Faculty

1996-11-01T23:59:59.000Z

62

Measurements of Transformations in the Physical and Chemical Properties of Clouds Associated with Onshore Flow in Washington State  

Science Conference Proceedings (OSTI)

Preliminary measurements of several physical and chemical parameters associated with clouds in two cases of onshore flow over western Washington suggest that the physical and chemical properties of maritime, cloudy air passing over this region ...

Dean A. Hegg; Lawrence F. Radke; Peter V. Hobbs

1984-06-01T23:59:59.000Z

63

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

SciTech Connect

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

64

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

SciTech Connect

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

65

Great Plains ASPEN Model Development: ASPEN physical property evaluation. Final topical report  

Science Conference Proceedings (OSTI)

This report documents the steps taken to evaluate pure component properties in the ASPEN data bank for those compounds required to simulate the Great Plains Coal Gasification Plant where the compounds are also available in the DIPPR (Design Institute for Physical Property Data) data bank. DIPPR is a cooperative effort of industry, institutes, and federal agencies interested in the compilation, measurement, and evaluation of physical property data for industrially important compounds. It has been found that the ASPEN data bank is reliable, for the most part, the main problem being lack of documentation. In the few instances where values either were found to be missing or to be unacceptable, recommended constants or equation parameters are presented in this report, along with associated literature citations. In the cases where temperature dependent data were subjected to regression analysis to obtain new equation parameters, the detailed methods employed are presented also. 32 references.

Millman, M.C.

1985-01-01T23:59:59.000Z

66

Physical Properties  

Science Conference Proceedings (OSTI)

A Glossary of Mining & Metallurgical Terms, 1881 by Various, $0.00 ($0.00), $25.00. High-Performance Structural Metals: An Undervalued but Critical Enabling...

67

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

Science Conference Proceedings (OSTI)

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

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

2010-09-30T23:59:59.000Z

68

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

NLE Websites -- All DOE Office Websites (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)

69

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

DOE Green Energy (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

70

Physical properties and battery performance of novel two-phase ion-conducting gels  

Science Conference Proceedings (OSTI)

Mixtures containing liquid electrolyte and {alpha},{omega}-alkane diacrylates were produced. Upon polymerization two-phase gels consisting of polymer-rich and polymer-poor phases were obtained. The structure and the properties of the gels were studied using nuclear magnetic resonance, complex impedance spectroscopy, and electron microscopy. Conductivity data of various mixtures before and after polymerization were fitted to a master curve using a modified free-volume theory. Low interaction between the polymer and the lithium ions in these gels ensures that the transport number for lithium is independent of the polymer concentration in various systems. Lithium metal batteries were constructed in which the two-phase gels performed a dual function as an ion conductor as well as a separator. The gel morphology was found to be very important in determining the performance of such batteries. By optimizing the morphology of the gels, internal short-circuiting could be prevented, and lithium metal cycling efficiencies in excess of 95% could be obtained.

Hikmet, R.A.M.; Peeters, M.P.J.; Lub, J.; Nijssen, W. [Philips Research, Eindhoven (Netherlands)

1999-07-01T23:59:59.000Z

71

Physics  

NLE Websites -- All DOE Office Websites (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.

72

Physical Properties of Niobium and Specifications for Fabrication of Superconducting Cavities  

Science Conference Proceedings (OSTI)

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

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

2011-07-01T23:59:59.000Z

73

Physics  

NLE Websites -- All DOE Office Websites (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.

74

Using MSG-SEVIRI Cloud Physical Properties and Weather Radar Observations for the Detection of Cb/TCu Clouds  

Science Conference Proceedings (OSTI)

A new automated daytime cumulonimbus/towering cumulus (Cb/TCu) cloud detection method for the months of MaySeptember is presented that combines information on cloud physical properties retrieved from the Spinning Enhanced Visible and Infrared ...

Cintia Carbajal Henken; Maurice J. Schmeits; Hartwig Deneke; Rob A. Roebeling

2011-07-01T23:59:59.000Z

75

Improvements in physical-property models used in micellar/polymer flooding  

Science Conference Proceedings (OSTI)

This is one of three companion papers describing a micellar/polymer or chemical flood simulator and comparing its results to experimental data. Various physical-property models required by chemical flood simulators have been improved and others developed. The most significant development is the use of pseudophases to model phase behavior. The method allows representation of four pseudocomponents. This is made possible by assuming that alcohol is distributed among the other three pseudocomponents, thus forming three pseudophases that are assumed to be in thermodynamic equilibrium. Another improvement related to the ion-exchange model. Cations are considered to exchange with both surfactant micelles and clays. The model assumes the exchange to be entirely a result of electrostatic association. A model for treating physical dispersion coefficients as a function of saturations has been added. The model is based on experimental evidence and is purely empirical.

Camilleri, D.; Fil, A.; Pope, G.A.; Rouse, B.A.; Sepehrnoori, K.

1987-11-01T23:59:59.000Z

76

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

Science Conference Proceedings (OSTI)

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

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

2011-12-01T23:59:59.000Z

77

Physical properties of Ce3-xTe4 below room temperature  

Science Conference Proceedings (OSTI)

The physical properties of polycrystalline Ce{sub 3-x}Te{sub 4} were investigated by measurements of the thermoelectric properties, Hall coefficient, heat capacity, and magnetization. The fully filled, metallic x = 0 compound displays a soft ferromagnetic transition near 4 K, and analysis of the corresponding heat capacity anomaly suggests a doublet ground state for Ce{sup 3+}. The transition is suppressed to below 2 K in the insulating x = 0.33 composition, revealing that magnetic order in Ce{sub 3-x}Te{sub 4} is driven by a Ruderman-Kittel-Kasuya-Yosida (RKKY)-type interaction. The thermoelectric properties trend with composition as expected from simple electron counting, and the transport properties in Ce{sub 3}Te{sub 4} are observed to be similar to those in La{sub 3}Te{sub 4}. Trends in the low-temperature thermal conductivity data reveal that the phonons are efficiently scattered by electrons, while all compositions examined have a lattice thermal conductivity near 1.2 W/m K{sup -1} at 200 K.

May, Andrew F [ORNL; McGuire, Michael A [ORNL; Cantoni, Claudia [ORNL; Sales, Brian C [ORNL

2012-01-01T23:59:59.000Z

78

Study of physical properties, gas generation and gas retention in simulated Hanford waste  

DOE Green Energy (OSTI)

The purpose of this study was to establish the chemical and physical processes responsible for the generation and retention of gases within high-level waste from Tank 101-SY on the Hanford Site. This research, conducted using simulated waste on a laboratory scale, supports the development of mitigation/remediation strategies for Tank 101-SY. Simulated waste formulations are based on actual waste compositions. Selected physical properties of the simulated waste are compared to properties of actual Tank 101-SY waste samples. Laboratory studies using aged simulated waste show that significant gas generation occurs thermally at current tank temperatures ({approximately}60{degrees}C). Gas compositions include the same gases produced in actual tank waste, primarily N{sub 2}, N{sub 2}O, and H{sub 2}. Gas stoichiometries have been shown to be greatly influenced by several organic and inorganic constituents within the simulated waste. Retention of gases in the simulated waste is in the form of bubble attachment to solid particles. This attachment phenomenon is related to the presence of organic constituents (HEDTA, EDTA, and citrate) of the simulated waste. A mechanism is discussed that relates the gas bubble/particle interactions to the partially hydrophobic surface produced on the solids by the organic constituents.

Bryan, S.A.; Pederson, L.R.; Scheele, R.D.

1993-04-01T23:59:59.000Z

79

Physics  

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

e-prints - see the 'hep' sections CERN Document Server Over a million records on high-energy physics (HEP) from CERN INSPIRE HEP papers updated daily (a collaboration of CERN,...

80

Physical properties of an alumino-silicate waste form for cesium and strontium.  

Science Conference Proceedings (OSTI)

Nuclear fuel reprocessing will be required to sustain nuclear power as a baseload energy supplier for the world. New reprocessing schemes offer an opportunity to develop a better strategy for recycling elements in the fuel and preparing stable waste forms. Advanced strategies could create a waste stream of cesium, strontium, rubidium, and barium. Some physical properties of a waste form containing these elements sintered into bentonite clay were evaluated. We prepared samples loaded to 27% by mass to a density of approximately 3 g/cm{sup 3}. Sintering temperatures of up to 1000 C did not result in volatility of cesium. Instead, the crystallinity noticeably increased in the waste form as temperatures increased from 600 to 1000 C. Assemblages of silicates were formed. Significant water evolved at approximately 600 C but no other gases were generated at higher temperatures.

Kaminski, M.; Mertz, C.; Ferrandon, M.; Dietz, N.; Sandi-Tapia, G.

2009-08-01T23:59:59.000Z

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.


81

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

E-Print Network (OSTI)

Soot particles released from fossil fuel combustion and biomass burning have a large impact on the regional/global climate by altering the atmospheric radiative properties and by serving as cloud condensation nuclei (CCN). However, the exact forcing is affected by the mixing of soot with other aerosol constituents, such as sulfuric acid. In this work, experimental studies have been carried out focusing on three integral parts: (1) heterogeneous uptake of sulfuric acid on soot; (2) hygroscopic growth of H2SO4-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 uptake coefficients of H2SO4 on combustion soot. The results suggest that uptake of H2SO4 takes place efficiently on soot particles, representing an important route to convert hydrophobic soot to hydrophilic aerosols. A tandem differential mobility analyzing (TDMA) system is employed to determine the hygroscopicity of freshly generated soot in the presence of H2SO4 coating. It is found that fresh soot particles are highly hydrophobic, while coating of H2SO4 significantly facilitates water uptake on soot even at sub-saturation relative humidities. The results indicate that aged soot particles in the atmosphere can potentially be an efficient source of CCN. Scattering and extinction coefficient measurements of the soot-H2SO4 mixed particles are conducted using a threewavelength Nephelometer and a multi-path extinction cell. Coating of H2SO4 is found to increase the single scattering albedo (SSA) of soot particles which has impact on the aerosol direct radiative effect. Other laboratory techniques such as transmission electron microscopy (TEM) and Fourier transform infrared spectrometry (FTIR) are utilized to examine the morphology and chemical composition of the soot-H2SO4 particles. This work provides critical information concerning the heterogeneous interaction of soot and sulfuric acid, and how their mixing affects the hygroscopic and optical properties of soot. The results will improve our ability to model and assess the soot direct and indirect forcing and hence enhance our understanding of the impact of anthropogenic activities on the climate.

Zhang, Dan

2003-05-01T23:59:59.000Z

82

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

Science Conference Proceedings (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

83

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

DOE Patents (OSTI)

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

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

1988-01-01T23:59:59.000Z

84

Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope  

E-Print Network (OSTI)

Detecting heat from minor planets in the outer solar system is challenging, yet it is the most efficient means for constraining the albedos and sizes of Kuiper Belt Objects (KBOs) and their progeny, the Centaur objects. These physical parameters are critical, e.g., for interpreting spectroscopic data, deriving densities from the masses of binary systems, and predicting occultation tracks. Here we summarize Spitzer Space Telescope observations of 47 KBOs and Centaurs at wavelengths near 24 and 70 microns. We interpret the measurements using a variation of the Standard Thermal Model (STM) to derive the physical properties (albedo and diameter) of the targets. We also summarize the results of other efforts to measure the albedos and sizes of KBOs and Centaurs. The three or four largest KBOs appear to constitute a distinct class in terms of their albedos. From our Spitzer results, we find that the geometric albedo of KBOs and Centaurs is correlated with perihelion distance (darker objects having smaller perihelia), and that the albedos of KBOs (but not Centaurs) are correlated with size (larger KBOs having higher albedos). We also find hints that albedo may be correlated with with visible color (for Centaurs). Interestingly, if the color correlation is real, redder Centaurs appear to have higher albedos. Finally, we briefly discuss the prospects for future thermal observations of these primitive outer solar system objects.

John Stansberry; Will Grundy; Mike Brown; Dale Cruikshank; John Spencer; David Trilling; Jean-Luc Margot

2007-02-20T23:59:59.000Z

85

Exploring the physical properties of local star-forming ULIRGs from the ultraviolet to the infrared  

E-Print Network (OSTI)

We present an application of the da Cunha, Charlot & Elbaz (2008) model of the spectral energy distribution (SEDs) of galaxies from the ultraviolet to far-infrared to a small pilot sample of purely star-forming Ultra-Luminous Infrared Galaxies (ULIRGs). We interpret the observed SEDs of 16 ULIRGs using this physically-motivated model which accounts for the emission of stellar populations from the ultraviolet to the near-infrared and for the attenuation by dust in two components: an optically-thick starburst component and the diffuse ISM. The infrared emission is computed by assuming that all the energy absorbed by dust in these components is re-radiated at mid- and far-infrared wavelengths. This model allows us to derive statistically physical properties including star formation rates, stellar masses, as well as temperatures and masses of different dust components and plausible star formation histories. We find that, although the ultraviolet to near-infrared emission represents only a small fraction of th...

da Cunha, Elisabete; Diaz-Santos, Tanio; Armus, Lee; Marshall, Jason A; Elbaz, David

2010-01-01T23:59:59.000Z

86

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

DOE Patents (OSTI)

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

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

1991-01-01T23:59:59.000Z

87

Soil physical and hydrological properties under three biofuel crops in Ohio  

Science Conference Proceedings (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

88

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

Science Conference Proceedings (OSTI)

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

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

2009-09-30T23:59:59.000Z

89

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

DOE Patents (OSTI)

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

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

1997-01-01T23:59:59.000Z

90

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

Science Conference Proceedings (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

91

LATE-TIME LIGHT CURVES OF TYPE II SUPERNOVAE: PHYSICAL PROPERTIES OF SUPERNOVAE AND THEIR ENVIRONMENT  

Science Conference Proceedings (OSTI)

We present BVRIJHK-band photometry of six core-collapse supernovae, SNe 1999bw, 2002hh, 2003gd, 2004et, 2005cs, and 2006bc, measured at late epochs (>2 yr) based on the Hubble Space Telescope (HST), and the Gemini North, and WIYN telescopes. We also show the JHK light curves of supernova impostor SN 2008S up to day 575 because it was serendipitously in our SN 2002hh field of view. Of our 43 HST observations in total, 36 observations are successful in detecting the light from the SNe alone and measuring magnitudes of all the targets. HST observations show a resolved scattered light echo around SN 2003gd at day 1520 and around SN 2002hh at day 1717. Our Gemini and WIYN observations detected SNe 2002hh and 2004et as well. Combining our data with previously published data, we show VRIJHK-band light curves and estimate decline magnitude rates at each band in four different phases. Our prior work on these light curves and other data indicate that dust is forming in our targets from days {approx}300 to 400, supporting SN dust formation theory. In this paper we focus on other physical properties derived from late-time light curves. We estimate {sup 56}Ni masses for our targets (0.5-14 Multiplication-Sign 10{sup -2} M{sub Sun }) from the bolometric light curve of each of days {approx}150-300 using SN 1987A as a standard (7.5 Multiplication-Sign 10{sup -2} M{sub Sun }). The flattening or sometimes increasing fluxes in the late-time light curves of SNe 2002hh, 2003gd, 2004et, and 2006bc indicate the presence of light echoes. We estimate the circumstellar hydrogen density of the material causing the light echo and find that SN 2002hh is surrounded by relatively dense materials (n(H) >400 cm{sup -3}) and SNe 2003gd and 2004et have densities more typical of the interstellar medium ({approx}1 cm{sup -3}). We analyze the sample as a whole in the context of physical properties derived in prior work. The {sup 56}Ni mass appears well correlated with progenitor mass with a slope of 0.31 Multiplication-Sign 10{sup -2}, supporting the previous work by Maeda et al., who focus on more massive Type II SNe. The dust mass does not appear to be correlated with progenitor mass.

Otsuka, Masaaki; Meixner, Margaret; Panagia, Nino [Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218 (United States); Fabbri, Joanna; Barlow, Michael J.; Wesson, Roger [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom); Clayton, Geoffrey C.; Andrews, Jennifer E. [Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803 (United States); Gallagher, Joseph S. [Department of Mathematics, Physics, and Computer Science, Raymond Walters College, 9555 Plain field Rd., Blue Ash, OH 45236 (United States); Sugerman, Ben E. K. [Department of Physics and Astronomy, Goucher College, 1021 Dulaney Valley Road, Baltimore, MD 21204 (United States); Ercolano, Barbara [Universitaets-Sternwarte Muenchen, Scheinerstr. 1, 81679 Muenchen (Germany); Welch, Douglas, E-mail: otsuka@stsci.edu, E-mail: otsuka@asiaa.sinica.edu.tw [Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 (Canada)

2012-01-01T23:59:59.000Z

92

An Estimate of Low-Cloud Feedbacks from Variations of Cloud Radiative and Physical Properties with Sea Surface Temperature on Interannual Time Scales  

Science Conference Proceedings (OSTI)

Simulations of climate change have yet to reach a consensus on the sign and magnitude of the changes in physical properties of marine boundary layer clouds. In this study, the authors analyze how cloud and radiative properties vary with SST ...

Zachary A. Eitzen; Kuan-Man Xu; Takmeng Wong

2011-02-01T23:59:59.000Z

93

Physical and thermal properties and leaching characteristics of a beneficiated eastern oil shale hydroretorted in the PFH process  

SciTech Connect

The preferred feedstocks for the Institute of Gas Technology`s (IGT) Pressurized Fluidized-Bed Hydroretorting (PFH) process are beneficiated Eastern US oil shales. After hydroretorting, the beneficiated shale is combusted to generate process and export power. Before hydroretorting and after combustion the shale will be stored in large embankments. The design and characteristics of these embankments depends on the physical, thermal, and leaching properties of the raw and spent shales. IGT and the Illinois Institute of Technology conducted tests to determine the physical and thermal properties and leaching characteristics of samples of beneficiated and thermally processed Alabama shale. The physical and thermal properties determined include permeability, compressibility, compactability, consolidation, shear stress, cohesion, thermal conductivity, and liquid and plastic limits. Tests were conducted on samples of raw, hydroretorted, hydroretorted and combusted (H&C), and the results show that the physical properties of raw and thermally processed beneficiated shale are considerably different. Leachability test results show that none of the thermally processed shale samples exhibited the toxicity characteristic [per the Toxicity Characteristic Leaching Procedure (TCLP)]. Combustion and agglomeration reduced the levels of metals leached from the H&C and H&A shale samples during TCLP tests. Overall, storage of raw and spent beneficiated shales in embankments will not result in significant environmental impacts

Mensinger, M.C. [Institute of Gas Technology, Chicago, IL (United States); Budiman, J.S. [Illinois Inst. of Technology, Chicago, IL (United States). Dept. of Civil Engineering

1992-12-31T23:59:59.000Z

94

The Physical and Chemical Properties of Fly Ash from Coal Gasification and Study on Its Recycling Utilization  

Science Conference Proceedings (OSTI)

Aiming at the difficulties in utilization of fly ash from coal gasification, the physical and chemical properties of fly ash were investigated. This research studied recycling utilization on using fly ash as one of cement raw materials for cement clinker. ... Keywords: fly ash, X-ray diffraction (XRD), Scanning Electron Microscope (SEM), recycling utilization

Guohua Qiu; Weiqiang Zeng; Zhenglun Shi; Mengxiang Fang; Zhongyang Luo

2010-12-01T23:59:59.000Z

95

Physical Properties Models for Simulation of Processes to Treat INEEL Tank Farm Waste: Thermodynamic Equilibrium  

SciTech Connect

A status is presented of the development during FY2002 of a database for physical properties models for the simulation of the treatment of Sodium-Bearing Waste (SBW) at the Idaho National Engineering and Environmental Laboratory. An activity coefficient model is needed for concentrated, aqueous, multi-electrolyte solutions that can be used by process design practitioners. Reasonable first-order estimates of activity coefficients in the relevant media are needed rather than an incremental improvement in theoretical approaches which are not usable by practitioners. A comparison of the Electrolyte Non-Random Two-Liquid (ENRTL) and Pitzer ion-interaction models for the thermodynamic representation of SBW is presented. It is concluded that Pitzer's model is superior to ENRTL in modeling treatment processes for SBW. The applicability of the Pitzer treatment to high concentrations of pertinent species and to the determination of solubilities and chemical equilibria is addressed. Alternate values of Pitzer parameters for HCl, H2SO4, and HNO3 are proposed, applicable up to 16m, and 12m, respectively. Partial validation of the implementation of Pitzer's treatment within the commercial process simulator ASPEN Plus was performed.

Nichols, T.T.; Taylor, D.D.

2002-07-18T23:59:59.000Z

96

Physical Properties Models for Simulation of Processes to Treat INEEL Tank Farm Waste: Thermodynamic Equilibrium  

SciTech Connect

A status is presented of the development during FY2002 of a database for physical properties models for the simulation of the treatment of Sodium-Bearing Waste (SBW) at the Idaho National Engineering and Environmental Laboratory. An activity coefficient model is needed for concentrated, aqueous, multi-electrolyte solutions that can be used by process design practitioners. Reasonable first-order estimates of activity coefficients in the relevant media are needed rather than an incremental improvement in theoretical approaches which are not usable by practitioners. A comparison of the Electrolyte Non-Random Two-Liquid (ENRTL) and Pitzer ion-interaction models for the thermodynamic representation of SBW is presented. It is concluded that Pitzer's model is superior to ENRTL in modeling treatment processes for SBW. The applicability of the Pitzer treatment to high concentrations of pertinent species and to the determination of solubilities and chemical equilibria is addressed. Alternate values of Pitzer parameters for HCl, H2SO4, and HNO3 are proposed, applicable up to 16m, and 12m, respectively. Partial validation of the implementation of Pitzer's treatment within the commercial process simulator ASPEN Plus was performed.

Nichols, Todd Travis; Taylor, Dean Dalton

2002-07-01T23:59:59.000Z

97

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

Science Conference Proceedings (OSTI)

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

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

1990-08-31T23:59:59.000Z

98

Urban waste compost: Effects on physical, chemical, and biochemical soil properties  

Science Conference Proceedings (OSTI)

A long-term field experiment was conducted to determine the effect of the additions of urban waste compost on the physical and chemical properties and enzymatic activities in a calcareous soil (Fluventic Xerochrept). Total Porosity (pores >50 pm measured on thin soil sections from undisturbed samples by image analysis) was greater in the plots treated with compost than the control plots due to a larger amount of elongated pores. In the amended plots total and humified organic C, Pb, Cu, and Zn showed a significant increase compared with nonamended plots. Enzymatic activities (L-asparaginase, arylsulphatase, dehydrogenase, phosphodiesterase, and alkaline phosphomonoesterase) were significantly enhanced by the compost addition thus indicating no inhibiting influence of the heavy metals present. The increased levels of the arylsulphatase, dehydrogenase, phosphodiesterase, and phosphomonoesterase activities were significantly correlated with total porosity: the first three with pores ranging from 50 to 1000 {mu}m, mainly with pores 50 to 200 {mu}m in size and phosphomonoesterase only with pores whose size was <500 {mu}m. L-asparaginase activity was not correlated with porosity. Only arylsulphatase, dehydrogenase, and phosphodiesterase were negatively correlated with bulk density. 44 refs., 4 figs., 6 tabs.

Giusquiani, P.L.; Gigliotti, G.; Businelli, D. [Istituto di Chimica Agraria dell`Universita, Perugia (Italy)] [and others

1995-01-01T23:59:59.000Z

99

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

DOE Green Energy (OSTI)

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

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

1988-12-01T23:59:59.000Z

100

ASPEN physical property evaluation for Great Plains simulation. Great Plains ASPEN model development. [Great Plains Coal Gasification Plant  

Science Conference Proceedings (OSTI)

This report documents the steps taken to evaluate the pure component properties in the ASPEN data bank for those compounds required to simulate the Great Plains Coal Gasification Plant where the compounds are also available in the DIPPR (Design Institute for Physical Property Data) data bank. DIPPR is a cooperative effort of industry, institutes and federal agencies interested in the compilation, measurement and evaluation of physical property data for industrially important compounds. It has been found that the ASPEN data bank is for the most part reliable, its main problem being lack of documentation. In the few instances where values were found to be either missing or to be unacceptable, recommended constants or equation parameters are presented in this report along with associated literature citations. In the cases where temperature dependent data were regressed to obtain new equation parameters, the detailed methods employed are also presented.

Millman, M.C.

1983-08-04T23:59:59.000Z

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.


101

PHYSICAL PROPERTIES OF THE LOW-MASS ECLIPSING BINARY NSVS 02502726  

Science Conference Proceedings (OSTI)

NSVS 02502726 has been known as a double-lined, detached eclipsing binary that consists of two low-mass stars. We obtained BVRI photometric follow-up observations in 2009 and 2011 to measure improved physical properties of the binary star. Each set of light curves, including the 2008 data given by Cakirli et al., was simultaneously analyzed with the previously published radial velocity curves using the Wilson-Devinney binary code. The conspicuous seasonal light variations of the system are satisfactorily modeled by a two-spot model with one starspot on each component and by changes of the spot parameters with time. Based on 23 eclipse timings calculated from the synthetic model and one ephemeris epoch, an orbital period study of NSVS 02502726 reveals that the period has experienced a continuous decrease of -5.9 Multiplication-Sign 10{sup -7} day yr{sup -1} or a sinusoidal variation with a period and semi-amplitude of 2.51 yr and 0.0011 days, respectively. The timing variations could be interpreted as either the light-travel-time effect due to the presence of an unseen third body, or as the combination of this effect and angular momentum loss via magnetic stellar wind braking. Individual masses and radii of both components are determined to be M{sub 1} = 0.689 {+-} 0.016 M{sub Sun }, M{sub 2} = 0.341 {+-} 0.009 M{sub Sun }, R{sub 1} = 0.707 {+-} 0.007 R{sub Sun }, and R{sub 2} = 0.657 {+-} 0.008 R{sub Sun }. The results are very different from those of Cakirli et al. with the primary's radius (0.674 {+-} 0.006 R{sub Sun }) smaller the secondary's (0.763 {+-} 0.007 R{sub Sun }). We compared the physical parameters presented in this paper with current low-mass stellar models and found that the measured values of the primary star are best fitted to a 79 Myr isochrone. The primary is in good agreement with the empirical mass-radius relation from low-mass binaries, but the secondary is oversized by about 85%.

Lee, Jae Woo; Youn, Jae-Hyuck; Kim, Seung-Lee; Lee, Chung-Uk, E-mail: jwlee@kasi.re.kr, E-mail: jhyoon@kasi.re.kr, E-mail: slkim@kasi.re.kr, E-mail: leecu@kasi.re.kr [Korea Astronomy and Space Science Institute, Daejon 305-348 (Korea, Republic of)

2013-01-01T23:59:59.000Z

102

Computer-assisted apparatus for measuring physical properties of meat during compression  

Science Conference Proceedings (OSTI)

Prototype apparatus was developed to measure the optical properties of meat during compression and the rheological properties of meat during thawing. Compression may be a source of error when meat quality is measured with an optical probe and the rheological ...

H. J. Swatland

1992-07-01T23:59:59.000Z

103

Synthesis of structured phospholipids with conjugated linolenic acid, and evaluation of their physical properties  

E-Print Network (OSTI)

Structured phospholipids with conjugated linolenic acid were produced for potential applications in nutraceuticals and functional foods. Structured phospholipids were synthesized with conjugated linolenic acid (CLnA) from natural sources by catalytic enzymatic reaction. Pomegranate seed oil, as a natural source of CLnA, and an isomerized-concentrated mixture (ICM) of CLnA from flaxseed oil were used for the enzymatic reaction with phosphotidylcholine (PC) using Liposyme TL IM for fatty acid modification at 57 C for 96 h. The enzymatic process was an effective way to produce structured phospholipids with CLnA. The maximum incorporation of CLnA from pomegranate seed oil and ICM from flaxseed oil into PC was 11.3% and 4.9% after 72 h, respectively. Structured lysophospholipids were also obtained as a result of the enzymatic reaction. The maximum incorporation of CLnA from pomegranate oil and ICM from flaxseed oil into lysophospholipids was 17.2% and 13.5% after 72h, respectively. Physical properties such as dropping point and viscosity at 40 and 50 C of the structured phospholipids produced were measured when they were added to a chocolate mixture (unsweetened chocolate 94.6%, coconut oil 5% and 0.4 % phospholipids). Two controls were used for comparison: the chocolate mixture without phospholipids and the chocolate mixture with Lipoid S100 (phosphatidylcholine 94%). Structured phospholipids with CLnA showed lower dropping point and viscosities than the controls. Oil-in-water emulsions were prepared with whey protein (1%), soy bean oil (10%) and phospholipids (0.5%) in a high pressure homogenizer at 20MPa. The emulsion stability of the emulsions prepared, control (without phospholipids), Lipoid S 100 and structured phospholipids with CLnA were determined by visual observation of phase separation. The structured phospholipids emulsion showed higher emulsion stability than the controls. This emulsion was stable up to 108 h while the emulsion without phospholipid and Lipoid S100 were 48 h and 96 h stable, respectively. Oxidative stability of the emulsions prepared was determined by measuring the peroxide value and p-anisidine value after 1, 3 and 7 days at 50 C. Oil was extracted from the emulsions using isooctane:isopropanol (3:2 v/v). The structured phospholipid emulsions showed lower oxidative stability than the controls.

Quezada Arboleda, Nathalie

2007-08-01T23:59:59.000Z

104

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

E-Print Network (OSTI)

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

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

2013-01-01T23:59:59.000Z

105

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

E-Print Network (OSTI)

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

Jounghun Lee; Cheng Li

2008-03-12T23:59:59.000Z

106

Comparison of physical properties of quiet and active regions through the analysis of MHD simulations of the solar photosphere  

E-Print Network (OSTI)

Recent observations have shown that the photometric and dynamic properties of granulation and of small-scale magnetic features depend on the amount of magnetic flux of the region they are embedded in. We analyze results from numerical Hydro and Magneto Hydrodynamic simulations characterized by different amount of average magnetic flux and find qualitatively the same differences as those reported from observations. We show that these different physical properties result from the inhibition of convection induced by the presence of the magnetic field, which changes the temperature stratification of both quiet and magnetic regions. Our results are relevant for solar irradiance variations studies, as such differences are still not properly taken into account in irradiance reconstruction models.

Criscuoli, Serena

2013-01-01T23:59:59.000Z

107

The interplay between physical and chemical properties of protein films affects their bioactivity  

E-Print Network (OSTI)

of Materials Science and Metallurgy, Cambridge Centre for Medical Materials, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK. Telephone: +44 1223 362966, Fax: +44 1223 334366. Email: cng21@cam.ac.uk 2 Abstract While mechanical properties...

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

2012-07-09T23:59:59.000Z

108

Survey of Physical and Chemical Properties of Soils Collected From Former Manufactured Gas Plant Sites  

Science Conference Proceedings (OSTI)

This report presents technical information and data from a study of the physical and chemical nature of soils at former manufactured gas plant (MGP) sites. Included in the report is a comparison of chemical analysis methods for determination of monocyclic aromatic hydrocarbons (MAHs), polycyclic aromatic hydrocarbons (PAHs), and total petroleum hydrocarbons (TPH). One of the specific objectives of the research was determining relationships between total soil and leachate concentrations of analytes of int...

1999-12-15T23:59:59.000Z

109

Phase Diagram and Physical Properties of H[subscript 2]O at High Pressures and temperatures: Applications to Planetary Interiors  

DOE Green Energy (OSTI)

Here we discuss the phase diagram and physical properties of H{sub 2}O under pressure-temperature conditions relevant to planetary interiors. Recent studies show that the melting curve of H{sub 2}O increases rapidly above a recently discovered triple point at approximately 35 to 47 GPa and 1000 K, indicating a large increase in {Delta}V/{Delta}S (volume versus entropy change) and associated changes in the physical properties of H{sub 2}O at high pressures and temperatures. Existence of the triple point is thought to be associated with the formation of a superionic phase, dynamically-disordered ice VII, or extension of the ice VII-ice X phase boundary; although the precise pressure and temperature of the triple point, curvature of the melting line, and nature of the solid-solid transition below the triple point all remain to be further explored. The steep increase in the melting curve of H{sub 2}O at high pressures and temperatures has important implications on our understanding of planetary interiors. Depending on its curvature, the melting line of H{sub 2}O may intersect the isentropes of Neptune and Uranus as well as the geotherm of Earth's lower mantle. Furthermore, if the triple point is due to the occurrence of the theoretically predicted superionic phase, besides leading to significant ionic conductivity, fast proton diffusion would cause enhanced chemical reactivity and formation of complex compounds in these planets. For example, reaction of H{sub 2}O with iron and other metals to form metal hydrides such as FeH{sub x} could provide a mechanism for incorporation of hydrogen as a light element into Earth's core. The equation of state of water is also presented as it pertains to the properties of hydrous fluid and melt phases in the mantle.

Lin, Jung-Fu; Schwegler, Eric; Yoo, Choong-Shik (LLNL)

2007-02-22T23:59:59.000Z

110

Weathering effects on some chemical and physical properties of retorted oil shale  

SciTech Connect

Union B retorted Utah oil shale, Paraho retorted Utah oil shale, and Paraho retorted Colorado oil shale differed in texture, pH, and salinity. Physical breakdown of Paraho retorted Colorado oil shale particles was observed at the surface of columns exposed to field conditions in eastern Utah for 9 months, but no physical weathering was observed in the other two retorted oil shale types under the same conditions. Exposure to weather resulted in pH reduction of all three retorted shales but was most pronounced in the more highly alkaline Paraho retorted Utah oil shale. The finer particle (< 2 mm) fractions tended to have lower pH values and higher electrical conductivities than the more coarse fractions, even when the latter were crushed to < 2 mm. Freezing and thawing in the laboratory were very effective in causing particle breakdown of Paraho retorted Colorado oil shale. During weathering the large particles first separated along cleavage planes, followed by disintegration of the lamina.

Richardson, S.G. (Utah State Univ., Logan); McKell, C.M.; George, M.R.; Gray, G.

1981-04-01T23:59:59.000Z

111

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

E-Print Network (OSTI)

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

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

2011-01-01T23:59:59.000Z

112

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

SciTech Connect

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

Michael V. Glazoff

2013-08-01T23:59:59.000Z

113

Dark energy, exotic matter and properties of horizons in black hole physics and cosmology  

E-Print Network (OSTI)

We summarize recent results on the properties of near-horizon metrics in different spherically symmetric space-times, including Kantowski-Sachs cosmological models whose evolution begins with a horizon (the so-called Null Big Bang) and static metrics related to black holes. We describe the types of matter compatible with cosmological and black-hole horizons. It turns out, in particular, that a black hole horizon can be in equilibrium with a fluid of disordered cosmic strings ("black holes can have curly hair"). We also discuss different kinds of horizons from the viewpoint of the behavior of tidal forces acting on an extended body and recently classified as "usual", "naked" and "truly naked" ones; in the latter case, tidal forces are infinite in a freely falling reference frame. It is shown that all truly naked horizons, as well as many of those previously characterized as naked and even usual ones, do not admit an extension and therefore must be considered as singularities. The whole analysis is performed locally (in a neighborhood of a candidate horizon) in a model-independent manner. Finally, the possible importance of some of these models in generating dynamic, perturbatively small vacuum fluctuation contributions to the cosmological constant (within a cosmological Casimir-effect approach to this problem) is discussed.

K. A. Bronnikov; E. Elizalde; O. B. Zaslavskii

2008-10-28T23:59:59.000Z

114

Band-Structure, Optical Properties, and Defect Physics of the Photovoltaic Semiconductor SnS  

Science Conference Proceedings (OSTI)

SnS is a potential earth-abundant photovoltaic (PV) material. Employing both theory and experiment to assess the PV relevant properties of SnS, we clarify on whether SnS has an indirect or direct band gap and what is the minority carrier effective mass as a function of the film orientation. SnS has a 1.07 eV indirect band gap with an effective absorption onset located 0.4 eV higher. The effective mass of minority carrier ranges from 0.5 m{sub 0} perpendicular to the van der Waals layers to 0.2 m{sub 0} into the van der Waals layers. The positive characteristics of SnS feature a desirable p-type carrier concentration due to the easy formation of acceptor-like intrinsic Sn vacancy defects. Potentially detrimental deep levels due to SnS antisite or S vacancy defects can be suppressed by suitable adjustment of the growth condition towards S-rich.

Vidal, J.; Lany, S.; d'Avezac, M.; Zunger, A.; Zakutayev, A.; Francis, J.; Tate, J.

2012-01-16T23:59:59.000Z

115

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

E-Print Network (OSTI)

This research focuses on aircraft observational studies of aerosol-cloud interactions in cumulus clouds. The data were collected in the summer of 2004, the spring of 2007 and the mid-winter and spring of 2008 in Texas, central Saudi Arabia and Istanbul, Turkey, respectively. A set of 24 pairs of sub-cloud aerosol and cloud penetration data are analyzed. Measurements of fine and coarse mode aerosol concentrations from 3 different instruments were combined and fitted with lognormal distributions. The fit parameters of the lognormal distributions are compared with cloud droplet effective radii retrieved from 260 cloud penetrations. Cloud condensation nuclei (CCN) measurements for a subset of 10 cases from the Istanbul region are compared with concentrations predicted from aerosol size distributions. Ammonium sulfate was assumed to represent the soluble component of aerosol with dry sizes smaller than 0.5 mm and sodium chloride for aerosol larger than 0.5 mm. The measured CCN spectrum was used to estimate the soluble fraction. The correlations of the measured CCN concentration with the predicted CCN concentration were strong (R2 > 0.89) for supersaturations of 0.2, 0.3 and 0.6%. The measured concentrations were typically consistent with an aerosol having a soluble fraction between roughly 0.5 and 1.0, suggesting a contribution of sulfate or some other similarly soluble inorganic compound. The predicted CCN were found to vary by +or-3.7% when the soluble fraction was varied by 0.1. Cumulative aerosol concentrations at cutoff dry diameters of 1.1, 0.1 and 0.06 mm were found to be correlated with cloud condensation nuclei concentrations but not with maximum cloud base droplet concentrations. It is also shown that in some cases the predominant mechanisms involved in the formation of precipitation were altered and modified by the aerosol properties. This study suggests that CCN-forced variations in cloud droplet number concentration can change the effective radius profile and the type of precipitation hydrometeors. These differences may have a major impact on the global hydrological cycle and energy budget.

Axisa, Duncan

2009-12-01T23:59:59.000Z

116

Physical Chemistry of Ionic Liquids Symposium Schedule  

NLE Websites -- All DOE Office Websites (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

117

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

Science Conference Proceedings (OSTI)

This report documents the requirements for transferring physical and hydraulic property data compiled by PNNL into the Hanford Environmental Information System (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 one of their current site contractors - CH2M-Hill Plateau Remediation Company (CHPRC). 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.1 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 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 should be ready for transfer to HEIS in the very near future. This document outlines a plan for the migration of these datasets into HEIS.

Rockhold, Mark L.; Middleton, Lisa A.

2009-03-31T23:59:59.000Z

118

Lidar Network Observations of Cirrus Morphological and Scattering Properties during the International Cirrus Experiment 1989: The 18 October 1989 Case Study and Statistical Analysis  

Science Conference Proceedings (OSTI)

Four lidars located roughly 75 km from each other in the inner German Bight of the North Sea, were used to measure geometrical and optical properties of cirrus clouds during the International Cirrus Experiment 1989 (ICE '89). A complete cirrus ...

Albert Ansmann; Jens Bsenberg; Grard Brogniez; Salem Elouragini; Pierre H. Flamant; Karlheinz Klapheck; Holger Linn; Louis Menenger; Walfried Michaelis; Maren Riebesell; Christoph Senff; Pierre-Yves Thro; Ulla Wandinger; Claus Weitkamp

1993-10-01T23:59:59.000Z

119

Advanced characterization of physical properties of coals with different coal structures by nuclear magnetic resonance and X-ray computed tomography  

Science Conference Proceedings (OSTI)

In order to understand the correlation between coal structure and physical property of coal, samples with different coal structures were collected from the Late Permian period coal seams in the Laochang area, Yunnan Province, China. A set of experiments ... Keywords: Adsorption capacities, Coal structure, Nuclear magnetic resonance (NMR), Seepage capacities, X-ray computed tomography (X-CT)

Song Li; Dazhen Tang; Hao Xu; Zi Yang

2012-11-01T23:59:59.000Z

120

258 07 Physical Properties  

Science Conference Proceedings (OSTI)

AOCS Press, Urbana, IL 61802 2011 by AOCS Press. All rights reserved. No part of this PDF may be repro-

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

258 09 Physical Properties  

Science Conference Proceedings (OSTI)

AOCS Press, Urbana, IL 61802 2011 by AOCS Press. All rights reserved. No part of this PDF may be repro-

122

Effect of AlN buffer layer properties on the morphology and polarity of GaN nanowires grown by molecular beam epitaxy  

SciTech Connect

Low-temperature AlN buffer layers grown via plasma-assisted molecular beam epitaxy on Si (111) were found to significantly affect the subsequent growth morphology of GaN nanowires. The AlN buffer layers exhibited nanowire-like columnar protrusions, with their size, shape, and tilt determined by the AlN V/III flux ratio. GaN nanowires were frequently observed to adopt the structural characteristics of the underlying AlN columns, including the size and the degree of tilt. Piezoresponse force microscopy and polarity-sensitive etching indicate that the AlN films and the protruding columns have a mixed crystallographic polarity. Convergent beam electron diffraction indicates that GaN nanowires are Ga-polar, suggesting that Al-polar columns are nanowire nucleation sites for Ga-polar nanowires. GaN nanowires of low density could be grown on AlN buffers that were predominantly N-polar with isolated Al-polar columns, indicating a high growth rate for Ga-polar nanowires and suppressed growth of N-polar nanowires under typical growth conditions. AlN buffer layers grown under slightly N-rich conditions (V/III flux ratio = 1.0 to 1.3) were found to provide a favorable growth surface for low-density, coalescence-free nanowires.

Brubaker, Matt D. [Physical Measurement Laboratory, National Institute of Standards and Technology, Boulder, Colorado 80305 (United States); Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309 (United States); DARPA Center for Integrated Micro/Nano-Electromechanical Transducers (iMINT), University of Colorado, Boulder, Colorado 80309 (United States); Levin, Igor; Davydov, Albert V. [Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Rourke, Devin M.; Sanford, Norman A.; Bertness, Kris A. [Physical Measurement Laboratory, National Institute of Standards and Technology, Boulder, Colorado 80305 (United States); Bright, Victor M. [Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309 (United States); DARPA Center for Integrated Micro/Nano-Electromechanical Transducers (iMINT), University of Colorado, Boulder, Colorado 80309 (United States)

2011-09-01T23:59:59.000Z

123

Functional Properties Group Homepage  

Science Conference Proceedings (OSTI)

... Defect Structures and Electronic Properties of GrapheneGraphene and related materials have remarkable physical properties, such as high ...

2013-01-04T23:59:59.000Z

124

www.mdpi.org/ijms The Effects of Heat Treatment on the Physical Properties and Surface Roughness of Turkish Hazel (Corylus colurna L.) Wood  

E-Print Network (OSTI)

Abstract: Heat treatment is often used to improve the dimensional stability of wood. In this study, the effects of heat treatment on the physical properties and surface roughness of Turkish Hazel (Corylus colurna L.) wood were examined. Samples obtained from Kastamonu Forest Enterprises, Turkey, were subjected to heat treatment at varying temperatures and for different durations. The physical properties of heat-treated and control samples were tested, and oven-dry density, air-dry density, and swelling properties were determined. A stylus method was employed to evaluate the surface characteristics of the samples. Roughness measurements, using the stylus method, were made in the direction perpendicular to the fiber. Four main roughness parameters, mean arithmetic deviation of profile (Ra), mean peak-to-valley height (Rz), root mean square roughness (Rq), and maximum roughness (Ry) obtained from the surface of wood were used to evaluate the effect of heat treatment on the surface characteristics of the specimens. Significant difference was determined (p = 0.05) between physical properties and surface roughness parameters (Ra,Rz, Ry, Rq) for three temperatures and threeInt. J. Mol. Sci. 2008, 9 1773 durations of heat treatment. The results showed that the values of density, swelling and

Derya Sevim Korkut; Sleyman Korkut; Ilter Bekar; Mehmet Budak?; Tuncer Dilik; Nevzat ak?c?er

2008-01-01T23:59:59.000Z

125

Particle Morphology Glossary  

Science Conference Proceedings (OSTI)

Contents || Index. 12/08/2009. Glossary of Morphology Terms (or Form Terms). Included in the Spreadsheet Tool. For Scanning ...

126

Properties  

Science Conference Proceedings (OSTI)

Table 3   Lubricant properties...45.0 6.80 103 0.67 ? ? 5W-30 motor oil, SG/CD, energy conserving II, ILSAC,

127

Property  

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

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

128

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  

Science Conference Proceedings (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

129

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

SciTech Connect

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

130

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

E-Print Network (OSTI)

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

Olga Wodo; Baskar Ganapathysubramanian

2011-09-15T23:59:59.000Z

131

Reading Comprehension - Properties and Changes  

NLE Websites -- All DOE Office Websites (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

132

Physical and chemical properties of dust produced in a N{sub 2}-CH{sub 4} RF plasma discharge  

Science Conference Proceedings (OSTI)

Titan's atmospheric chemistry is simulated using a Capacitively Coupled Plasma discharge produced in a N{sub 2}-CH{sub 4} mixture. The produced solid particles are analysed ex-situ. Chemical properties are deduced from: elemental composition, FTIR and LTQ-Orbitrap mass spectrometer. Optical properties are deduced from reflectivity in visible and IR range.

Ouni, F.; Alcouffe, G.; Szopa, C.; Carrasco, N.; Cernogora, G. [Universite de Versailles St Quentin, Service d'Aeronomie, BP 3-91371 Verrieres le Buisson (France); Adande, G.; Thissen, R.; Quirico, E.; Brissaud, O. [LPG-BP 5338041 Grenoble Cedex 9 (France); Schmitz-Afonso, I.; Laprevote, O. [ICSN-CNRS Avenue de la Terrasse, 91198 Gif sur Yvette (France)

2008-09-07T23:59:59.000Z

133

A literature review on the chemical and physical properties of uranyl fluoride (UO sub 2 F sub 2 )  

Science Conference Proceedings (OSTI)

This report reviews the preparation and properties of uranyl fluoride. Data are given on the crystal structure, solubility in water, specific gravity, density, specific heat, enthalpy, entropy, acidity, corrosion properties, and refractive indices. Empirical formulas are given to calculate specific gravity, density of aqueous solutions, molal volume, and refractive indices. 13 refs., 3 figs., 11 tabs.

Myers, W.L. (Los Alamos National Lab., NM (USA) Illinois Univ., Urbana, IL (USA). Dept. of Nuclear Engineering)

1990-08-01T23:59:59.000Z

134

A Method for Forecasting Cloud Condensation Nuclei Using Predictions of Aerosol Physical and Chemical Properties from WRF/Chem  

Science Conference Proceedings (OSTI)

Model investigations of aerosolcloud interactions across spatial scales are necessary to advance basic understanding of aerosol impacts on climate and the hydrological cycle. Yet these interactions are complex, involving numerous physical and ...

Daniel Ward; William Cotton

2011-07-01T23:59:59.000Z

135

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

DOE Green Energy (OSTI)

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

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

1993-09-01T23:59:59.000Z

136

Morphology in Word Recognition: Hindi and Urdu  

E-Print Network (OSTI)

The present research examined whether morphology influences word recognition independently of form-level word properties. Prevailing views attribute cross-linguistic differences in morphological processing to variations in morphological structure and/or productivity. This study tested whether morphological processing is additionally influenced by the orthographic depth of written language, by comparing primed word naming among biliterate readers of Hindu and Urdu, languages written in distinct orthographies but sharing a common morphophonology. Results from five experiments supported the view that morphological processing in orthographically shallow (transparent) Hindi script diverged significantly from that in the deeper (opaque) Urdu orthography. Specifically, morphological priming was differently affected in Hindi vs. Urdu by prim presentation conditions (Exps. 1-3): very briefly exposed (48ms), forward masked morphological primes facilitated word naming in Hindi but not in Urdu. Neither briefly presented, unmasked primes nor longer prime exposures (80ms/240ms) produced priming in Hindi, but Experiment 2 showed priming by unmasked Hindi primes at a 240 ms exposure. By contrast, Urdu exhibited morphological priming only for forward masked primes at the long exposure of 240ms. Thus, early-onset priming in Hindi resembled morpho-orthographic decomposition previously recorded in English, whereas Urdu evinced priming consistent with morpho-semantic effects documented across several languages. Hemispheric asymmetry in morphological priming also diverged across Hindi and Urdu (Exps. 4 and 5); Hindi revealed a non-significant numerical trend for facilitation by morphological primes only in the right visual field (RVF), whereas reliable morphological priming in Urdu was limited to left visual field (LVF) presentation.Disparate patterns in morphological processing asymmetry were corroborated by differences in baseline visual field asymmetries in Hindi vs. Urdu word recognition- filler words elicited a consistent RVF advantage in Hindi, whereas in Urdu, one-syllable fillers, but not two- and three-syllable words revealed the RVF advantage. Taken together, the findings suggest that the variable of orthographic depth be integrated more explicitly into mainstream theoretical accounts of the mechanisms underlying morphological processing in word recognition. In addition, this study highlights the psycholinguistic potential of the languages Hindi and Urdu for advancing our understanding of the role of orthography as well as phonology in morphological processing.

Rao, Chaitra

2010-05-01T23:59:59.000Z

137

F3: Microstructural and Mechanical Properties of Fe-30Mn - 2.3Si  

Science Conference Proceedings (OSTI)

A16: Analysis of Surface Physic-Chemical Properties of Titanium Heat Treated A17: Morphology Variations of GaN Nanowires and Devices ... A21: Synthesis and Characterization of ?-Tricalcium Phosphate / Glutamic acid ... B13: Ionic Conductivity of Doped Ceria Thin Films Using Different Electrode Configurations.

138

Experimental Properties of Fluids Group  

Science Conference Proceedings (OSTI)

The Experimental Properties of Fluids Group, Physical and Chemical Properties Division of the Chemical Science and Technology Laboratory, NIST.

2000-07-24T23:59:59.000Z

139

The call to adopt a nominal set of astrophysical parameters and constants to improve the accuracy of fundamental physical properties of stars  

E-Print Network (OSTI)

The increasing precision of astronomical observations of stars and stellar systems is gradually getting to a level where the use of slightly different values of the solar mass, radius and luminosity, as well as different values of fundamental physical constants may lead to measurable systematic differences in the determination of basic physical properties. An equivalent issue with an inconsistent value of the speed of light was resolved by adopting a nominal value that is constant and has no error associated with it. Analogously, we suggest that the systematic error in stellar parameters may be avoided if the following two conditions are met: (1) we deprecate the usage of solar quantities Msun, Rsun, and Lsun as units and replace them by the nominal values that are by definition exact and expressed in SI units: 1 MnomSun = 1.988416 x 10^{30} kg, 1 RnomSun = 6.95508 x 10^8 m, and 1 LnomSun = 3.846 x 10^{26} W; and (2) each study containing a determination of fundamental properties of stars or stellar systems s...

Harmanec, Petr

2011-01-01T23:59:59.000Z

140

Observations of Physical Properties and Currents in the Northern Gulf of Mexico during Summer, 2002-2004, and Currents from January to July 2006  

E-Print Network (OSTI)

Many processes in the ocean are interrelated. The direction with which an eddy rotates will determine if nutrients are moved closer to the surface where they can be utilized by plankton to increase the base of the food chain, or it can restrict growth by causing the surface layer of nutrient poor water to deepen below the photic layer. The direction of current flow will also affect the temperature structure, which is a contributing factor in the density of water. A change in density can act as a barrier between the surface and deeper waters, effectively isolating the surface from deep waters. It is important to understand the physical properties in a study area in order to understand the dynamics controlling the distributions of nutrients, which influence the distribution of plankton, which influences the distribution of predator species like squid and whales. The Sperm Whale Seismic Study (SWSS) tracked the locations of sperm whales in the Gulf of Mexico. This study seeks to describe the physical environment in which they live. To that end, various physical properties observed during the SWSS cruises were processed and used in conjunction with sea surface height (SSH) fields from satellite altimetry data. The data from different years and from the same years are used to provide descriptions of the physical environment present during the SWSS cruises and how that environment changed between cruises. A time-series of currents, collected over a six month time period in 2006, is included to document how the currents are influenced by different processes found along the continental slope in the northern Gulf of Mexico. The findings indicate the observed currents are related to local SSH features. Temperature structure can be influenced throughout the upper 1000 m by these SSH features. The temperature structure is stable over time but depends on local SSH features. Properties nearer to the surface are more variable than at depth. Although the overlying wind field most likely influences the currents at 51 m no correlation between winds observed at the Brutus platform and currents observed at 51 m at the Ocean Star platform was found.

Lalime, Michael

2010-05-01T23:59:59.000Z

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

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

SciTech Connect

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

142

Physics | More Science | ORNL  

NLE Websites -- All DOE Office Websites (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

143

TABLE OF CONTENTS I. PHYSICAL & CHEMICAL ...  

Science Conference Proceedings (OSTI)

Page 1. Chemical Science and Technology Laboratory Page 1 Technical Activities Report Physical & Chemical Properties Division ...

2001-06-12T23:59:59.000Z

144

Morphological characterization of nanofibers: methods and application in practice  

Science Conference Proceedings (OSTI)

Biomedical applications such as wound dressing for skin regeneration, stem cell transplantation, or drug delivery require special demands on the three-dimensional porous scaffolds. Besides the biocompatibility and mechanical properties, the morphology ...

Jakub irc, Radka Hobzov, Nina Kostina, Marcela Munzarov, Martina Juklckov, Miloslav Lhotka, rka Kubinov, Alena Zajcov, Ji? Michlek

2012-01-01T23:59:59.000Z

145

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

SciTech Connect

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

146

Energy, entropy and mass scaling relations for elliptical galaxies. Towards a physical understanding of their photometric properties  

E-Print Network (OSTI)

In the present paper, we show that elliptical galaxies (Es) obey a scaling relation between potential energy and mass. Since they are relaxed systems in a post violent-relaxation stage, they are quasi-equilibrium gravitational systems and therefore they also have a quasi-constant specific entropy. Assuming that light traces mass, these two laws imply that in the space defined by the three S\\'ersic law parameters (intensity Sigma_0, scale a and shape nu), elliptical galaxies are distributed on two intersecting 2-manifolds: the Entropic Surface and the Energy-Mass Surface. Using a sample of 132 galaxies belonging to three nearby clusters, we have verified that ellipticals indeed follow these laws. This also implies that they are distributed along the intersection line (the Energy-Entropy line), thus they constitute a one-parameter family. These two physical laws (separately or combined), allow to find the theoretical origin of several observed photometrical relations, such as the correlation between absolute magnitude and effective surface brightness, and the fact that ellipticals are located on a surface in the [log R_eff, -2.5 log Sigma_0, log nu] space. The fact that elliptical galaxies are a one-parameter family has important implications for cosmology and galaxy formation and evolution models. Moreover, the Energy-Entropy line could be used as a distance indicator.

I. Marquez; G. B. Lima Neto; H. Capelato; F. Durret; B. Lanzoni; D. Gerbal

2000-09-29T23:59:59.000Z

147

Physical properties, crystal and magnetic structure of layered Fe[subscript 1.11]Te[subscript 1;#8722;x]Se[subscript x] superconductors  

SciTech Connect

The physical and structural properties of Fe1.11Te and Fe1.11Te0.5Se0.5 have been investigated by means of X-ray and neutron diffraction as well as physical property measurements. For the Fe1.11Te compound, the structure distortion from a tetragonal to monoclinic phase takes place at 64 K accompanied with the onset of antiferromagnetic order upon cooling. The magnetic structure of the monoclinic phase was confirmed to be of antiferromagnetic configuration with a propagation vector k = (1/2, 0, 1/2) based on Rietveld refinement of neutron powder diffraction data. The structural/magnetic transitions are also clearly visible in magnetic, electronic and thermodynamic measurements. For superconducting Fe1.11Te0.5Se0.5 compound, the superconducting transition with T c = 13.4 K is observed in the resistivity and ac susceptibility measurements. The upper critical field H c2 is obtained by measuring the resistivity under different magnetic fields. The Kim's critical state model is adopted to analyze the temperature dependence of the ac susceptibility and the intergranular critical current density is calculated as a function of both field amplitude and temperature. Neutron diffraction results show that Fe1.11Te0.5Se0.5 crystalizes in tetragonal structure at 300 K as in the parent compound Fe1.11Te and no structural distortion is detected upon cooling to 2 K. However an anisotropic thermal expansion anomaly is observed around 100 K.

Xiao, Y.; Su, Y.; Kumar, C.M.N.; Ritter, C.; Mittal, R.; Price, S.; Peron, J.; Brckel, Th. (BARC); (Julich); (ILL)

2012-10-23T23:59:59.000Z

148

Mesoscale morphologies in polymer thin films.  

Science Conference Proceedings (OSTI)

In the midst of an exciting era of polymer nanoscience, where the development of materials and understanding of properties at the nanoscale remain a major R&D endeavor, there are several exciting phenomena that have been reported at the mesoscale (approximately an order of magnitude larger than the nanoscale). In this review article, we focus on mesoscale morphologies in polymer thin films from the viewpoint of origination of structure formation, structure development and the interaction forces that govern these morphologies. Mesoscale morphologies, including dendrites, holes, spherulites, fractals and honeycomb structures have been observed in thin films of homopolymer, copolymer, blends and composites. Following a largely phenomenological level of description, we review the kinetic and thermodynamic aspects of mesostructure formation outlining some of the key mechanisms at play. We also discuss various strategies to direct, limit, or inhibit the appearance of mesostructures in polymer thin films as well as an outlook toward potential areas of growth in this field of research.

Ramanathan, M.; Darling, S. B. (Center for Nanoscale Materials)

2011-06-01T23:59:59.000Z

149

Physics Folklore  

NLE Websites -- All DOE Office Websites (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

150

Structural and physical properties of layered oxy-arsenides LnRuAsO (Ln=La, Nd, Sm, Gd)  

Science Conference Proceedings (OSTI)

Polycrystalline samples of LaRuAsO, NdRuAsO, SmRuAsO, and GdRuAsO have been synthesized and studied using powder x-ray diffraction, electrical transport, magnetization, and heat capacity measurements. Variations in structural properties across the series reveal a trend toward more ideal tetrahedral coordination around Ru as the size of the rare earth element is reduced. The lattice parameters of these Ru compounds show a more anisotropic response to variation in Ln than their Fe analogs, and significant anisotropy in thermal expansion is also observed. Transport measurements show metallic behavior, and carrier concentrations near 10{sup 21}-10{sup 22} electrons per cm{sup 3} are inferred from simple analysis of Hall effect measurements. Anomalies in resistivity, magnetization, and heat capacity indicate antiferromagnetic ordering of rare earth moments at 5 K for GdRuAsO, 4.5 K for SmRuAsO, and heat capacity of LaRuAsO, NdRuAsO, SmRuAsO, and GdRuAsO. Highlights: Black-Right-Pointing-Pointer Experimental investigation of LaRuAsO, NdRuAsO, SmRuAsO, and GdRuAsO. Black-Right-Pointing-Pointer Anisotropic lattice response to changing Ln radius and temperature. Black-Right-Pointing-Pointer Ru coordination becomes more ideal as Ln radius is reduced. Black-Right-Pointing-Pointer Transport measurements reveal metallic conduction dominated by electrons. Black-Right-Pointing-Pointer Magnetic measurements indicate antiferromagnetic ordering Nd, Sm, and Gd moments.

McGuire, Michael A., E-mail: McGuireMA@ornl.gov [Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); May, Andrew F.; Sales, Brian C. [Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)

2012-07-15T23:59:59.000Z

151

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

E-Print Network (OSTI)

Whole ground white, high tannin and black sorghum with and without additional high tannin sorghum bran were used in different proportions to develop ready to eat breakfast cereals and snacks. The effect of extrusion on the phenolic compounds 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 level in the formulations, the bulk density of extrudates was increased while expansion ratio was decreased. Bowl life of extrudates was increased up to 18 min. when 60% whole ground white sorghum was used with additional 10% high tannin sorghum bran. Water soluble index was significantly higher for the extrudates without additional bran and decreased as bran was added. A positive correlation between water soluble index and expansion ratio (R^2=0.89) indicated that the more expansion ratio provided a large surface area for water to interact with starch and other soluble components. The retention of total phenols in these extrudates varied from 13-41% and it was found that extrudates with additional high tannin sorghum bran had more total phenols than extrudates without it. Sorghum extrudates showed a significant reduction in antioxidant activity varied from 21-83%. Similarly, the effect of extrusion on condensed tannins was detrimental, and their retention was ranged from 12-28%. The smaller particle size of ground sorghum increased the surface area of contact between composite flour components and extruder barrel which promoted interactions during extrusion, lowering condensed tannins and antioxidant activity. All sorghum based extrudates had significantly (Psorghum had non-significant difference in starch digestibility from 0.5-2hrs. After 16 hrs., high tannin sorghum extrudates had the lowest starch digestibility (79%), which was significantly different from other sorghum types. There was a negative correlation between the rapid digestible starch and tannin contents (R^2=0.62). Breakfast cereals made from different types of sorghum and bran levels were statistically equally rated in taste and overall acceptability.

Asif, Muhammad

2011-12-01T23:59:59.000Z

152

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.

153

The Bolocam Galactic Plane Survey -- III. Characterizing Physical Properties of Massive Star-Forming Regions in the Gemini OB1 Molecular Cloud  

E-Print Network (OSTI)

We present the 1.1 millimeter Bolocam Galactic Plane Survey (BGPS) observations of the Gemini OB1 molecular cloud complex, and targeted ammonia 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 with corresponding 5-sigma detections in the ammonia (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 kinetic temperature of 20 K for the sample of 34 BGPS sources. The observed ammonia 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 s...

Dunham, Miranda K; Evans, Neal J; Cyganowski, Claudia J; Aguirre, James; Bally, John; Battersby, Cara; Bradley, Eric Todd; Dowell, Darren; Drosback, Meredith; Ginsburg, Adam; Glenn, Jason; Harvey, Paul; Merello, Manuel; Schlingman, Wayne; Shirley, Yancy L; Stringfellow, Guy S; Walawender, Josh; Williams, Jonathan P

2010-01-01T23:59:59.000Z

154

Context: Physical and Chemical Properties  

Science Conference Proceedings (OSTI)

... Modification of the Characteristics of the Condensed Fire Extinguishing Aerosol During Its Distribution Through the Pipelines.. ...

2011-11-17T23:59:59.000Z

155

Physical Properties of Liquid Precursors  

Science Conference Proceedings (OSTI)

... a carrier gas through the liquid held in ... of decomposition products, dissolved gases, and other ... measure thermal stability, a gas chromatograph/mass ...

2012-10-02T23:59:59.000Z

156

Physical Properties of New Materials  

Science Conference Proceedings (OSTI)

This includes high-throughput calculations of solute effects on single-crystal ... The porous deposits, termed CRUD after Chalk River Unidentified Deposits, are

157

a BLACK HOLES AND FUNDAMENTAL PHYSICS  

E-Print Network (OSTI)

We give a review of classical, thermodynamic and quantum properties of black holes relevant to fundamental physics. 1.

Jos P. S. Lemos; Centro Multidisciplinar; Astrofsica Centra

2005-01-01T23:59:59.000Z

158

Method for simulating discontinuous physical systems - Energy ...  

The mathematical foundations of conventional numerical simulation of physical systems provide no consistent ... Energy Innovation Portal ... Property Management and ...

159

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

160

Physics Department  

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

Find people (by last name) Go Advanced search Physics Home High Energy & Nuclear Physics Directorate Research Current Research Areas BNL Physics Timeline Administrative...

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

BABAR Physics  

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

Physics A BABAR event display. BABAR physics results span a broad range of topics, including B, charm, and tau physics; CP violation; precision CKM measurements; charmonium and...

162

painless physics  

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

Division Head RF August 30, 1996 By Pat Colestock, Accelerator Division FIXED TARGET PHYSICS September 20, 1996 By Peter H. Garbincius, Physics Section FIXED TARGET PHYSICS PART...

163

Defect Structures and Electronic Properties of Graphene  

Science Conference Proceedings (OSTI)

Defect Structures and Electronic Properties of Graphene. Summary: Graphene and related materials have remarkable physical ...

2013-07-15T23:59:59.000Z

164

LANL | Physics | High Energy Physics  

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

Exploring high energy physics Physics Division scientists and engineers investigate the field of high energy physics through experiments that strengthen our fundamental...

165

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

SciTech Connect

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

166

NIST Property Data Summaries  

Science Conference Proceedings (OSTI)

... 89, DC Lam, FF Lange, and AG Evans, Mechanical Properties of Partially ... Birchall, WJ Clegg, MA Harmer, K. Kendall, and DH Jones, Physical and ...

2007-12-13T23:59:59.000Z

167

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)

This study focuses on the analysis of atmospheric particles sampled from two different field campaigns: the field study at a cattle feeding facility in the summer from 2005 to 2008 and the Indirect and Semi-Direct Aerosol Campaign (ISDAC) in 2008. A ground site field study at a representative large cattle feeding facility in the Texas Panhandle was conducted to characterize the particle size distributions, hygroscopicity, and chemical composition of agricultural aerosols. Here, a first comprehensive 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 and gaseous ammonia were measured at the same field in 2007 and 2008. Measurements such as these provide a means to determine whether the fugitive dust emitted from a typical large feedlot represents a health concern for employees of the feeding operation and the nearby community. Detailed chemical composition of aircraft-sampled particles collected during ISDAC was studied. Filter samples were collected under a variety of conditions in and out of mixed phase and ice clouds in the Arctic. Specifically, particles were sampled from a mixed-phase cloud during a period of observed high concentrations of ice nuclei (IN), a biomass plume, and under relatively clean ambient conditions. Composition of particles was studied on a particle-by-particle basis using several microspectroscopy techniques. Based on the elemental composition analysis, more magnesium was found in Arctic cloud residues relative to ambient air. Likewise, based on the carbon speciation analysis, high IN samples contained coated inorganics, carbonate, and black or brown carbon particles. In the samples collected during a flight through a biomass burning plume, water-soluble organic carbon was the dominant overall composition. Due to their hygroscopic nature, these organics may preferably act as cloud condensation nuclei (CCN) rather than IN. Other ambient samples contained relatively higher fractions of organic and inorganic mixtures and less purely water-soluble organics than found in the biomass particles. The most likely source of inorganics would be sea salt. When present, sea salt may further enhance ice nucleation.

Moon, Seong-Gi

2010-05-01T23:59:59.000Z

168

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

Science Conference Proceedings (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

169

The cyber-physical attacker  

Science Conference Proceedings (OSTI)

The world of Cyber-Physical Systems ranges from industrial to national interest applications. Even though these systems are pervading our everyday life, we are still far from fully understanding their security properties. Devising a suitable attacker ... Keywords: attacker model, cyber-physical systems, cyber-physical threats, security protocol verification

Roberto Vigo

2012-09-01T23:59:59.000Z

170

Morphology-guided graph search for untangling objects: C. elegans analysis  

Science Conference Proceedings (OSTI)

We present a novel approach for extracting cluttered objects based on their morphological properties. Specifically, we address the problem of untangling Caenorhabditis elegans clusters in high-throughput screening experiments. We represent the skeleton ...

Tammy Riklin Raviv; V. Ljosa; A. L. Conery; F. M. Ausubelc; A. E. Carpenter; P. Golland; C. Whlby

2010-09-01T23:59:59.000Z

171

Physics of adherent cells  

E-Print Network (OSTI)

One of the most unique physical features of cell adhesion to external surfaces is the active generation of mechanical force at the cell-material interface. This includes pulling forces generated by contractile polymer bundles and networks, and pushing forces generated by the polymerization of polymer networks. These forces are transmitted to the substrate mainly by focal adhesions, which are large, yet highly dynamic adhesion clusters. Tissue cells use these forces to sense the physical properties of their environment and to communicate with each other. The effect of forces is intricately linked to the material properties of cells and their physical environment. Here a review is given of recent progress in our understanding of the role of forces in cell adhesion from the viewpoint of theoretical soft matter physics and in close relation to the relevant experiments.

Schwarz, Ulrich S

2013-01-01T23:59:59.000Z

172

Top Physics at CDF  

Science Conference Proceedings (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

173

Physical models of thin film polycrystalline solar cells based on measured grain-boundary and electronic-parameter properties. Quarterly report  

DOE Green Energy (OSTI)

Solar cells fabricated on polycrystalline silicon, either bulk or thin-film, can potentially be cost-effective when used in terrestrial photovoltaic energy-conversion systems. To achieve this goal, the polysilicon cell efficiency must be increased considerably from its present values. A severe limitation to the cell efficiency is due to the grain boundaries and their influence on carrier recombination. To remove this limitation, an understanding of the fundamental physics underlying the effects of the grain boundaries on cell performance is helpful. This fundamental physics is discussed, and models are developed for recombination currents in polysilicon pn-junction solar cells. Several analytic approximations, suggested by physical insight, are used and checked ultimately for self-consistency with the results of the analysis. The models are defined such that their parameters can be related directly to measurements, and the models are hence useful in interpreting experimental results. They also can be used to study, in a systematic way, cell-design modifications to improve the efficiency, e.g., grain-boundary passivation techniques.

Lindholm, F.A.; Fossum, J.G.; Holloway, P.A.; Neugroschel, A.

1979-12-01T23:59:59.000Z

174

Physics Division: Subatomic Physics Group  

NLE Websites -- All DOE Office Websites (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

175

ON THE POPULATIONS OF RADIO GALAXIES WITH EXTENDED MORPHOLOGY AT z < 0.3  

Science Conference Proceedings (OSTI)

Extended extragalactic radio sources have traditionally been classified into Fanaroff and Riley (FR) I and II types, based on the ratio r{sub s} of the separation S between the brightest regions on either sides of the host galaxy and the total size T of the radio source (r{sub s} {identical_to} S/T). In this paper, we examine the distribution of various physical properties as a function of r{sub s} of 1040 luminous (L {approx}> L{sub *}) extended radio galaxies (RGs) at z 0.8 and [O III] {lambda}5007 line luminosity >10{sup 6} L{sub sun} are markedly different on average from the rest of the RGs, in the sense that they are hosted in lower mass galaxies, live in relatively sparse environments, and likely have higher accretion rates onto the central supermassive black hole (SMBH). Thus, these high emission line luminosity, high-r{sub s} LD RGs, and the rest of RGs form a well-defined dichotomy. Motivated by the stark differences in the nuclear emission line properties of the RG subsamples, we suggest that the accretion rate onto the SMBH may play the primary role in creating the different morphologies. At relatively high accretion rates, the accretion system may produce powerful jets that create the 'classical double' morphology (roughly corresponding to the LD sources with r{sub s} {approx}> 0.8 and emission lines); at lower accretion rates, the jets from a radiatively inefficient accretion flow generate radio lobes without apparent 'hot spots' at the edge (corresponding to the majority of LD sources). At slightly lower accretion rates and in galaxies with dense galactic structure, sources with prominent jets result. It is possible that while the high accretion rate systems could affect sub-Mpc scale environments, the jets from lower accretion rate systems may efficiently suppress activity within the host galaxies.

Lin, Yen-Ting [Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Kashiwa, Chiba (Japan); Shen Yue; Strauss, Michael A.; Lunnan, Ragnhild [Princeton University Observatory, Princeton, NJ 08544 (United States); Richards, Gordon T., E-mail: yen-ting.lin@ipmu.j [Department of Physics, Drexel University, Philadelphia, PA 19104 (United States)

2010-11-10T23:59:59.000Z

176

Physical models of thin film polycrystalline solar cells based on measured grain-boundary and electronic-parameter properties. Final report, September 18, 1978-December 31, 1979  

DOE Green Energy (OSTI)

The research has sought the following: to identify and characterize the basic photovoltaic mechanisms that govern the conversion efficiency of polycrystalline thin-film solar cells; to experimentally determine the electronic parameters related to these photovoltaic mechanisms; and to relate these mechanisms and parameters to the conversion efficiency through theoretical physical models developed for engineering design. These objectives are all intimately related. The emphasis of the work has been on polysilicon, although it is building a foundation of understanding useful for similar research in the future on other thin-film materials. Progress is reported. (WHK)

Lindholm, F.A.; Fossum, J.G.; Holloway, P.A.; Neugroschel, A.

1979-01-01T23:59:59.000Z

177

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

178

Remixing physical objects through tangible tools  

E-Print Network (OSTI)

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

Follmer, Sean (Sean Weston)

2011-01-01T23:59:59.000Z

179

Injury assessment for physics-based characters  

Science Conference Proceedings (OSTI)

Determining injury levels for virtual characters is an important aspect of many games. For characters that are animated using simulated physics, it is possible assess injury levels based on physical properties, such as accelerations and forces. We have ...

Thomas Geijtenbeek; Diana Vasilescu; Arjan Egges

2011-11-01T23:59:59.000Z

180

Electroweak Physics  

E-Print Network (OSTI)

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

W. Hollik

2005-01-26T23:59:59.000Z

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


181

Brookhaven High Energy Physics  

NLE Websites -- All DOE Office Websites (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

182

Mechanical and transport properties of rocks at high temperatures and pressures. Task I. The physical nature of fracturing at depth. Final report  

DOE Green Energy (OSTI)

The deformational behavior of granitic rocks is important to a wide variety of national and academic concerns. Both transient and steady state behavior at elevated temperature and pressure, in the presence and absence of excess H2O, have been investigated recently in solid pressure medium equipment and deformation mechanisms and empirical steady state flow laws have been determined. Efforts in the more precise gas and fluid pressure media apparatus have generally been concentrated on low pressure transient creep in order to evaluate effects of stress, temperature, pore pressure and, most recently, strain rate on failure times and static fatigue processes. Additional research is required and the stage is now set for a thorough physical understanding of the evolution from elastic-brittle, through transient (work-hardening)-semibrittle to steady-state-semibrittle to ductile flow of granitic rocks under both dry and wet (saline fluid pore pressure) conditions. 31 refs., 9 figs.

Carter, N.L.

1984-02-28T23:59:59.000Z

183

Ontology-based modeling and integration of morphological characteristics of assembly joints for network-based collaborative assembly design  

Science Conference Proceedings (OSTI)

This paper presents our research on developing an ontology-based framework that can represent morphological characteristics related to assembly joints. Joints within the physical structure of an assembly are inevitable because of the limitations of component ... Keywords: Collaborative Product Design, Mereotopology, Morphological Characteristics, Ontology, Semantic Web Rule Language

Kyoung-yun Kim; Seongah Chin; Ohbyung Kwon; R. darin Ellis

2009-02-01T23:59:59.000Z

184

Processing, Characterization and Properties of Honeycombs, Foams ...  

Science Conference Proceedings (OSTI)

... and geometries, properties (thermal/optical, physical, and mechanical), and applications (Insulation, substrates for reactions, bioengineering scaffolds, etc.).

185

Open Source Physics  

E-Print Network (OSTI)

Open Source Physics (Brown, 2012; Christian, 2010; Esquembre, 2012; Hwang, 2010) empowers teachers and students to create and use these free tools with the associated intellectual property rights given to customise (Wee & Mak, 2009) the computer models/tools to suit their teaching and learning needs. Open Source Physics (OSP) focuses on design of computer models, such as Easy Java Simulations (EJS) and the use of video modeling and analysis (Tracker). They allow students to investigate, explore and analyse data which is either real or simulated. The OSP approach helps users overcome barriers in creating, using and scaling up meaningful ICT use in education. In Singapore, teachers and students have created or customised existing computer models to design and re-purpose EJS models to suit their context and learning needs. Tracker tools allow students to analyse different aspects of a physics phenomena to deepen their understanding of abstract physics concepts. Using Tracker, students record the motion of ob...

Wee, Loo Kang

2013-01-01T23:59:59.000Z

186

Qualitative physics in virtual environments  

Science Conference Proceedings (OSTI)

In this paper, we describe a new approach to the creation of virtual environments, which uses qualitative physics to implement object behaviour. We adopted Qualitative Process Theory as a qualitative reasoning formalism, due to its representational properties ... Keywords: intelligent virtual environments, modelling and simulation, qualitative physics

Marc Cavazza; Simon Hartley; Jean-Luc Lugrin; Mikael Le Bras

2004-01-01T23:59:59.000Z

187

Characterization of Grain Size, Morphology, Transmittance, and ...  

Science Conference Proceedings (OSTI)

Feb 16, 2010 ... Characterization of Minerals, Metals and Materials: Characterization of Grain Size, Morphology, Transmittance, and Tomography Sponsored...

188

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

Science Conference Proceedings (OSTI)

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

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

1999-06-01T23:59:59.000Z

189

Crystal structure, physical properties and electronic structure of a new organic conductor B"-(BEDT-TTF){sub 2}SF{sub 5}CHFCF{sub 2}SO{sub 3}.  

SciTech Connect

A new organic conductor, {beta}'-(BEDT-TTF){sub 2}SF{sub 5}CHFCF{sub 2}So{sub 3}[BEDT-TTF, hereafter abbreviated ET, refers to bis(ethylenedithio)tetrathiafulvalene], was prepared by electrocrystallization. The crystal structure of this salt was determined by single crystal X-ray diffraction at 298 and 150 K, its physical properties were examined by electrical resistivity, Raman spectroscopy and EPR measurements, and its electronic structure was calculated and compared with that of the analogous salt {beta}'-(ET){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}. Whereas {beta}'-(ET){sub 2}SF{sub 5}CHFCF{sub 2}SO{sub 3} has disordered anions and undergoes a metal-to-insulator transition at {approx}190 K, {beta}'-(ET){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3} has ordered anions and is semiconducting down to {approx}100 K, metallic below {approx}100 K, and superconducting below 5 K. At room temperature both {beta}'-(ET){sub 2}SF{sub 5}CHFCF{sub 2}SO{sub 3} and {beta}'(ET){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3} have similar electronic band structures and physical properties. When the temperature is lowered, each donor molecule stack becomes dimerized in both salts. However, the interdimer interaction within each donor stack nearly vanishes in {beta}'-(ET){sub 2}SF{sub 5}CHFCF{sub 2}SO{sub 3}, but remains substantial in {beta}'-(ET){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}.

Schlueter, J. A.; Ward, B. H.; Geiser, U.; Wang, H. H.; Kini, A. M.; Parakka, J.; Morales, E.; Koo, H.-J.; Whangbo, M.-H.; Winter, R. W.; Mohtasham, J.; Gard, G. L.; Materials Science Division; North Carolina State Univ.; Portland State Univ.

2001-01-01T23:59:59.000Z

190

The Effect of Constituent, Interfacial Properties and Morphology on ...  

Science Conference Proceedings (OSTI)

... electronic conducting (MIEC) ceramic membranes are HeteroFoaM's which ... the solid oxide fuel cell (SOFC), oxygen separation and permeation membranes,

191

Artificial muscle morphology : structure/property relationships in polypyrrole actuators  

E-Print Network (OSTI)

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

Pytel, Rachel Zimet

2007-01-01T23:59:59.000Z

192

Morphology and Mechanical Properties of Block Copolymer Gels ...  

Science Conference Proceedings (OSTI)

First Principles Modeling of Shape Memory Alloy Magnetic Refrigeration Materials ... of Lithium Battery Materials LiMPO4 (M = Mn, Fe, Co, and Ni): A Comparative ... Forming-Crush Simulation Optimization Using Internal State Variable Model.

193

Structural and Morphological Properties of Niobium Nitride Thin ...  

Science Conference Proceedings (OSTI)

A Study on Contact Resistance Failure between Al-Ti-TiN Multi-layer and W-via ... of Superlattices Through Phase Transformation by Low-Energy Ion Irradiation.

194

Hollow fiber solar cells: Processing, morphology, and property ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2014 TMS Annual Meeting & Exhibition. Symposium , 2014 TMS RF Mehl Medal Symposium on Frontiers in Nanostructured...

195

Gamma Prime Morphology and Creep Properties of Nickel Base ...  

Science Conference Proceedings (OSTI)

Roger C. Reed, Kenneth A. Green, Pierre Caron, Timothy P. Gabb, Michael G. Fahrmann, Eric S. Huron and Shiela A. ..... l coarsening of PGM-containing.

196

Persuance of Silica on Morphology and CO2/CH4 Gas Permeation ...  

Science Conference Proceedings (OSTI)

... in order to prevent condensation of water in the flat sheet membrane module. ... Mechanical and Physical Properties of Roof Tile Manufacturing from Red Mud.

197

Physics Demonstrations  

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

to help students develop a deeper understanding of the concepts of force and motion. Physics of Sports Grades 4-12 Additional Information Fermilab scientists guide a discussion...

198

B physics  

SciTech Connect

We review B physics and the motivation for studying B decays, including CP-violating effects in the B meson system. 33 refs., 20 figs.

Gilman, F.J.

1987-12-01T23:59:59.000Z

199

Atomic and Molecular Physics  

Science Conference Proceedings (OSTI)

... DG, * SRD 105 Physic Laboratory's Elemental ... Nuclear Physics SRD 144 Atomic Weights & ... Physical Constants SRD 121 Fundamental Physical ...

2012-10-10T23:59:59.000Z

200

Radiation Physics Portal  

Science Conference Proceedings (OSTI)

NIST Home > Radiation Physics Portal. Radiation Physics Portal. ... more. >> see all Radiation Physics programs and projects ... ...

2013-08-08T23:59:59.000Z

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


201

Properties of Uranium Compounds  

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

Triuranium Octaoxide (U3O8) Uranium Dioxide (UO2) Uranium Tetrafluoride (U4) Uranyl Fluoride (UO2F2) The physical properties of the pertinent chemical forms of uranium are...

202

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

SciTech Connect

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

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

2011-03-15T23:59:59.000Z

203

Crystal and magnetic structures and physical properties of a new pyroxene NaMnGe2O6 synthesized under high pressure  

Science Conference Proceedings (OSTI)

A new pyroxene NaMnGe2O6 has been synthesized at 3 GPa and 800 C, and fully characterized by x-ray single-crystal diffraction and neutron powder diffraction, measurements of magnetization and specific heat. Like other majority sodium pyroxenes, NaMnGe2O6 crystallizes into a monoclinic C2/c structure with unit-cell parameters a = 9.859(2) , b = 8.7507(18) , c = 5.5724(11) , and =105.64(3) at room temperature. The crystal structure is featured by quasi-one-dimensional chains of skew edge-sharing MnO6 octahedra running along the crystallographic c axis; these chains are connected by non-magnetic GeO4 tetrahedra, so as to lead to a low-dimensional magnetism. The highly distorted MnO6 octahedron consisting of three Mn-O bond lengths, i.e. 1.918 , 1.991 , and 2.198 , is consistent with the Jahn-Teller effect at Mn3+ in a cubic crystal field. A long-range cooperative Jahn-Teller distortion is formed by ordering longest Mn-O bonds between two neighboring octahedra along the chain direction. No orbital order-disorder transition has been found up to 750 K as checked by magnetic susceptibility. Like other alkali-metal pyroxenes with S > , NaMnGe2O6 (S = 2) was found to undergo a long-range antiferromagnetic ordering at TN = 7 K at low magnetic field due to the exchange interactions along and between chains. Due to the peculiar structural features and the corresponding magnetic coupling, the weak AF spin ordering gives way to a ferromagnetic-like state at a sufficiently high magnetic field. Specific-heat measurements demonstrated that a large portion of the magnetic entropy, i.e. > 60 %, has been removed above TN as a result of strong spin correlations within the quasi-one-dimensional Mn3+-spin chains. Neutron powder diffraction study suggests a commensurate magnetic structure defined by k = [0 0 0.5] with Mn moments aligned along the c axis. The present study on NaMnGe2O6 completed the evolution of magnetic properties as a function of the d-orbital occupancy from d1 to d5 in the magnetic pyroxenes.

Yan, Jiaqiang [ORNL; Tian, Wei [ORNL; May, Andrew F [ORNL; Cheng, J G [University of Texas, Austin; Zhou, J.-S. [University of Texas, Austin; Garlea, Vasile O [ORNL; Neuefeind, Joerg C [ORNL; Steinfink, Hugo [University of Texas, Austin; Lynch, V [University of Texas, Austin

2013-01-01T23:59:59.000Z

204

NEWTON's Physics Videos  

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

Physics Videos Do you have a great physics video? Please click our Ideas page. Featured Videos: How Stuff Works Videos - Physics How Stuff Works Videos - Physics The Physics...

205

Morphological, rheological and electrochemical studies of Poly(ethylene  

NLE Websites -- All DOE Office Websites (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.

206

RHIC | Spin Physics  

NLE Websites -- All DOE Office Websites (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

207

Physics Workshop  

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

2nd Workshop on Physics with a high intensity proton source, January 25-26 (Friday-Saturday), 2008 organized by Fermilab UEC and Fermilab Fermilab Home | Fermilab at Work |...

208

Physics Workshop  

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

3rd Workshop on Physics with a high intensity proton source, June 5-6 (Thursday-Friday), 2008 organized by Fermilab UEC and Fermilab Fermilab Home | Fermilab at Work | Fermilab...

209

Physics Demonstrations  

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

to help students develop a deeper understanding of the concepts of force and motion. Physics of Sports Grades 4-12 Fermilab scientists guide a discussion and exploration of the...

210

Physics Workshop  

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

1st Workshop on Physics with a high intensity proton source, November 16-17 (Friday-Saturday), 2007 organized by Fermilab UEC and Fermilab Fermilab Home | Fermilab at Work |...

211

Rock physics at Los Alamos Scientific Laboratory  

DOE Green Energy (OSTI)

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

Not Available

1980-01-01T23:59:59.000Z

212

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

213

Relationship between Morphology and Conductivity of Block ...  

Page 1 of 36 Accepted Manuscript 1 Relationship between Morphology and Conductivity of Block-Copolymer Based Battery Separators David T. Wonga,b,, ...

214

What is the morphology of a gene?  

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

of as structural, operator, and regulatory genes." - Dorland's Illustrated Medical Dictionary, 27th ed. So, in terms of morphology, a gene is a specific sequence of nucleotide in...

215

Morphologies of PDMS-containing diblock polymers  

E-Print Network (OSTI)

The morphologies of polydimethylsiloxane (PDMS)-containing diblock polymers are investigated as a function of volume fraction, segregation, processing procedure, and temperature. Strongly segregated polyisoprene-PDMS and ...

Stewart-Sloan, Charlotte (Charlotte Roberta)

2012-01-01T23:59:59.000Z

216

Representation of State Property Systems  

E-Print Network (OSTI)

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

Diederik Aerts; Sylvia Pulmannova

2008-11-15T23:59:59.000Z

217

Properties Hydrogen  

Science Conference Proceedings (OSTI)

Thermophysical Properties of Hydrogen. PROPERTIES, ... For information on a PC database that includes hydrogen property information click here. ...

218

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

219

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... 1. The NIST WebBook - NIST Chemical Reference Data for ... The NIST Mass Spectral Database: Extending the ... of fluids and fluid mixtures, including ...

220

NIST - Physical and Chemical Properties Division - Research ...  

Science Conference Proceedings (OSTI)

... provides comprehensive and evaluated Standard Reference Data and ... of technically important fluids and fluid mixtures. ... NIST Home Back to NIST. ...

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

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... off of Mars and returning to Earth with Mars ... to update our models of pulse tube refrigerators. ... within regenerators and pulse tubes when operated at ...

222

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... suppressant. Thus although fluorine can remove hydrogen atoms, the hydrogen fluoride that is formed cannot be recycled. ...

223

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... We are now working to develop formulations for propane, butane, and isobutane (so-called "natural refrigerants") that are of increasing interest. ...

224

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... acoustic and microwave resonances in a spherical, argon-filled cavity bounded by a thick, metal shell, enclosed by a high-performance thermostat. ...

225

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... Proper refrigeration machine design and operation therefore depends upon ... are performed on a specially modified commercial gas chromatograph ...

226

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... It provides the measurement standard for liquefied air gases, and it can be used to evaluate metering methods for liquefied natural gas (LNG), as it ...

227

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... from air, processing natural gas, recovering hydrogen from refinery streams, recovering and ... layer (eg, of a mineral or fluorochemical oil) to maintain ...

228

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... in the evaluation of molecular energies and derivatives ... of the current geometry optimization packages has ... points on potential energy surfaces of ...

229

Key Physical Properties of Smelter Grade Alumina  

Science Conference Proceedings (OSTI)

... Metals Volume. Keywords, Advanced Materials, ... A Numerical Approach for the Design of Anode Beam Mechanical Systems ... Anode Effect Phenomena during Conventional AEs, Low Voltage Propagating AEs & Non-propagating AEs ... Dubal Cell Voltage Drop Initiatives towards Low Energy High Amperage Cells.

230

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... This makes the supercritical environment extremely interesting for use in hazardous waste destruction, the oxidation of biomass and metabolic ...

231

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... Clay is the key inorganic substance in applications ranging from pollution prevention and remediation, enhanced oil recovery, the treatment of ...

232

NIST - Physical and Chemical Properties Division - Technical ...  

Science Conference Proceedings (OSTI)

... them in photochemical systems, to demonstrate formation of CO and/or HCOOH from CO 2 , and then to examine the mechanism of catalysis and to ...

233

NEWTON's Physics References  

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

Physics References Do you have a great physics reference link? Please click our Ideas page. Featured Reference Links: Physics Links Physics Links from AAPT See the American...

234

Top quark physics at CDF  

SciTech Connect

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

235

NETL: Available NETL Property  

NLE Websites -- All DOE Office Websites (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/

236

Operational health physics training  

SciTech Connect

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

NONE

1992-06-01T23:59:59.000Z

237

Brookhaven Condensed Matter Physics  

NLE Websites -- All DOE Office Websites (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.

238

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

2011-09-01T23:59:59.000Z

239

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

240

NIST Physical Constants  

Science Conference Proceedings (OSTI)

Fundamental Physical Constants. ... Values of Fundamental Physical Constants. ... Searchable Bibliography of Fundamental Constants. ...

2010-10-05T23:59:59.000Z

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

The physics of chromatin  

E-Print Network (OSTI)

Recent progress has been made in the understanding of the physical properties of chromatin -- the dense complex of DNA and histone proteins that occupies the nuclei of plant and animal cells. Here I will focus on the two lowest levels of the hierarchy of DNA folding into the chromatin complex: (i) the nucleosome, the chromatin repeating unit consisting of a globular aggregate of eight histone proteins with the DNA wrapped around: its overcharging, the DNA unwrapping transition, the ''sliding'' of the octamer along the DNA. (ii) The 30nm chromatin fiber, the necklace-like structure of nucleosomes connected via linker DNA: its geometry, its mechanical properties under stretching and its response to changing ionic conditions. I will stress that chromatin combines two seemingly contradictory features: (1) high compaction of DNA within the nuclear envelope and at the same time (2) accessibility to genes, promoter regions and gene regulatory sequences.

Helmut Schiessel

2003-03-21T23:59:59.000Z

242

Magnetoencephalographic investigations of morphological identity and irregularity  

E-Print Network (OSTI)

This thesis addresses the longstanding debate in the psycholinguistics literature about the correct way to characterize the psychological status of morphological relatedness and irregular allomorphy. The model argued for ...

Stockall, Linnaea C., 1975-

2004-01-01T23:59:59.000Z

243

CARBON NANOTUBES: PROPERTIES AND APPLICATIONS  

SciTech Connect

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

244

Top physics results at CDF  

SciTech Connect

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

Vickey, Trevor; /Illinois U., Urbana

2005-05-01T23:59:59.000Z

245

Physics Applications  

NLE Websites -- All DOE Office Websites (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

246

DOE Fundamentals Handbook: Classical Physics  

Science Conference Proceedings (OSTI)

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

Not Available

1992-06-01T23:59:59.000Z

247

DOE Fundamentals Handbook: Classical Physics  

SciTech Connect

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

Not Available

1992-06-01T23:59:59.000Z

248

MECHANICAL PROPERTIES OF ZIRCALOY-2  

DOE Green Energy (OSTI)

>The mechanical and physical properties of Zircaloy-2 were determined as a function of five test variables: temperature, grain size, direction to rolling, hydrgen content, and the presence or absence of a notch. The investigation included studies of the coefficient of thermal expansion, elastic moduius, tensile properties, creep properties, and low-cycle fatigue properties. Approximately 470 specimens from a single ingot were tested in the course of the investigation. (auth)

Mehan, R.L.; Wiesinger, F.W.

1961-02-01T23:59:59.000Z

249

Review of Particle Physics  

SciTech Connect

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, V{sub ud} and V{sub us}, V{sub cb} and V{sub ub}, fragmentation functions, particle detectors for accelerator and non-accelerator physics, magnetic monopoles, cosmological parameters, and big bang cosmology. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. All tables, listings, and reviews (and errata) are also available on the Particle Data Group website: http://pdg.lbl.gov.

Particle Data Group; Nakamura, Kenzo; al., et

2010-06-30T23:59:59.000Z

250

The properties of mixed reality boundaries  

Science Conference Proceedings (OSTI)

Mixed reality boundaries establish transparent windows between physical and virtual spaces. We introduce a set of properties that allow such boundaries to be configured to support different styles of co-operative activity. These properties are grouped ...

Boriana Koleva; Steve Benford; Chris Greenhalgh

1999-09-01T23:59:59.000Z

251

22.101 Applied Nuclear Physics, Fall 2004  

E-Print Network (OSTI)

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

Yip, Sidney

252

Top quark physics  

Science Conference Proceedings (OSTI)

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

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

2000-03-24T23:59:59.000Z

253

Brookhaven Physics: Into the Future  

NLE Websites -- All DOE Office Websites (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

254

Particle Physics Education Sites  

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

Particle Physics Education Sites quick reference Education and Information - National Laboratory Education Programs - Women and Minorities in Physics - Other Physics Sites -...

255

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

256

Forward physics with CMS  

E-Print Network (OSTI)

The physics potential of the forward physics project at CMS is very rich. Some of the diffraction and low-x physics channels are briefly discussed.

Marek Tasevsky

2004-08-22T23:59:59.000Z

257

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

258

Cellulose hydrolysis in evolving substrate morphologies III: Timescale analysis  

NLE Websites -- All DOE Office Websites (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,

259

Educational Physics Games  

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

Physics Games Do you have a great physics game? Please click our Ideas page. Featured Games: Nobel Prize - Physics Games Section Nobel Prize - Physics Games Section Nobelprize.org,...

260

Physics 5794 Computational Physics Syllabus Spring 2003  

E-Print Network (OSTI)

Physics 5794 ­ Computational Physics Syllabus ­ Spring 2003 Instructor: Massimiliano Di Ventra, by H. Gould and J. Tobochnik (Addison Wesley). Computational Physics, by S.E. Koonin, D.C. Meredith 3:30 ­ 4:45 p.m., Torgensen 2050. Course Content: The majority of problems encountered in Physics

Di Ventra, Massimiliano

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

Quantum Physics Division Homepage  

Science Conference Proceedings (OSTI)

... Contact. Physical Measurement Laboratory Quantum Physics Division General Information: 303-735-1985 Telephone 303-492-5235 Facsimile. ...

2013-06-28T23:59:59.000Z

262

Quantum Physics Theory  

Science Conference Proceedings (OSTI)

Quantum Physics Theory. Summary: Theoretical work ... constant. The database is available at http://physics.nist.gov/hdel. Precise ...

2010-10-05T23:59:59.000Z

263

NIST Nuclear Physics Data  

Science Conference Proceedings (OSTI)

Nuclear Physics Data. Radionuclide Half-Life Measurements Made at NIST; Atomic Weights and Isotopic Compositions. ... Physical Reference Data. ...

2010-10-05T23:59:59.000Z

264

Quantum Physics Portal  

Science Conference Proceedings (OSTI)

... for Science and Technology (CODATA) issues recommended values of the fundamental physical constants ... see all Quantum Physics programs and ...

2013-03-07T23:59:59.000Z

265

Radiation Physics Division  

Science Conference Proceedings (OSTI)

... The Radiation Physics Division, part of the Physical Measurement Laboratory ... the measurement standards for ionizing radiations and radioactivity ...

2013-09-05T23:59:59.000Z

266

NIST: Physical Measurement Laboratory - Research ...  

Science Conference Proceedings (OSTI)

... Fellowships: SURFing the Physical Measurement Laboratory ... Optical, Radiation, and Chemical Physics. ... involves PML's Quantum Physics Division. ...

2010-10-05T23:59:59.000Z

267

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

268

Metal oxide morphology in argon-assisted glancing angle deposition  

Science Conference Proceedings (OSTI)

Glancing angle deposition (GLAD) is a thin film deposition technique capable of fabricating columnar architectures such as posts, helices, and chevrons with control over nanoscale film features. Argon bombardment during deposition modifies the GLAD process, producing films with new morphologies which have shown promise for sensing and photonic devices. The authors report modification of column tilt angle, film density, and specific surface area for 12 different metal oxide and fluoride film materials deposited using Ar-assisted GLAD. For the vapor flux/ion beam geometry and materials studied here, with increasing argon flux, the column tilt increases, film density increases, and specific surface area decreases. With a better understanding of the nature of property modification and the mechanisms responsible, the Ar-assisted deposition process can be more effectively targeted towards specific applications, including birefringent thin films or photonic crystal square spirals.

Sorge, J. B.; Taschuk, M. T.; Wakefield, N. G.; Sit, J. C.; Brett, M. J. [Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 2V4 (Canada); Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 2V4 (Canada) and NRC National Institute for Nanotechnology, Edmonton, AB T6G 2M9 (Canada)

2012-03-15T23:59:59.000Z

269

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

Science Conference Proceedings (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

270

Modeling of thermal transport properties of multiphase porous materials  

Science Conference Proceedings (OSTI)

This work presents a numerical framework for modeling thermal transport properties of multiphase porous materials with complex internal microstructures. The framework includes two steps. First, a random generation-growth algorithm is highlighted for reproducing multiphase microstructures, statistically equivalent to the actual systems, based on the geometrical and morphological information obtained from measurements and experimental estimations. Then a high-efficiency lattice Boltzmann solver for the corresponding governing equations is described, which, while assuring energy conservation and appropriate continuities at the interfaces in a complex system, has demonstrated its numerical power in yielding accurate solutions. Various applications are provided to validate the feasibility, effectiveness and robustness of this new framework by comparing the predictions with existing experimental data for different transport processes, accounting for the effects due to internal morphology, microstructural anisotropy, and multi phase interactions. The examples given also suggest potential applicability of this methodology to other problems as long as they are governed by similar partial differential equation(s). Thus, for given composition and structure, this numerical methodology is in essence a model built on sound physics principles with prior validity, without resorting to any ad hoc empirical treatment. Therefore, it is useful for design and optimization of new materials, beyond just predicting and analyzing the existing ones.

Wang, Moran [Los Alamos National Laboratory; Kang, Qinjun [Los Alamos National Laboratory; Robinson, Bruce [Los Alamos National Laboratory; Ning, Pan [UC DAVIS

2010-01-01T23:59:59.000Z

271

Nuclear magnetic resonance studies of macroscopic morphology and dynamics  

Science Conference Proceedings (OSTI)

Nuclear magnetic resonance techniques are traditionally used to study molecular level structure and dynamics with a noted exception in medically applied NMR imaging (MRI). In this work, new experimental methods and theory are presented relevant to the study of macroscopic morphology and dynamics using NMR field gradient techniques and solid state two-dimensional exchange NMR. The goal in this work is not to take some particular system and study it in great detail, rather it is to show the utility of a number of new and novel techniques using ideal systems primarily as a proof of principle. By taking advantage of the analogy between NMR imaging and diffraction, one may simplify the experiments necessary for characterizing the statistical properties of the sample morphology. For a sample composed of many small features, e.g. a porous medium, the NMR diffraction techniques take advantage of both the narrow spatial range and spatial isotropy of the sample`s density autocorrelation function to obtain high resolution structural information in considerably less time than that required by conventional NMR imaging approaches. The time savings of the technique indicates that NMR diffraction is capable of finer spatial resolution than conventional NMR imaging techniques. Radio frequency NMR imaging with a coaxial resonator represents the first use of cylindrically symmetric field gradients in imaging. The apparatus as built has achieved resolution at the micron level for water samples, and has the potential to be very useful in the imaging of circularly symmetric systems. The study of displacement probability densities in flow through a random porous medium has revealed the presence of features related to the interconnectedness of the void volumes. The pulsed gradient techniques used have proven successful at measuring flow properties for time and length scales considerably shorter than those studied by more conventional techniques.

Barrall, G.A. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry]|[Lawrence Berkeley Lab., CA (United States). Materials Science Div.

1995-09-01T23:59:59.000Z

272

Paradigmatic Treatment of Arabic Morphology Martine Smets  

E-Print Network (OSTI)

University of Sussex, Brighton BN1 9HQ, UK martines@cogs.susx.ac.uk Abstract This paper 1 presents a language is inspired from work done by Calder (1989) who uses paradigms to organize morphological information, and string equations to handle string operations. 2 Organization of the Lexicon The language described here

273

The imbalanced problem in morphological galaxy classification  

Science Conference Proceedings (OSTI)

In this paper we present an experimental study of the performance of six machine learning algorithms applied to morphological galaxy classification. We also address the learning approach from imbalanced data sets, inherent to many real-world applications, ... Keywords: galaxies, imbalanced data sets, machine learning

Jorge De la Calleja; Gladis Huerta; Olac Fuentes; Antonio Benitez; Eduardo Lpez Domnguez; Ma. Auxilio Medina

2010-11-01T23:59:59.000Z

274

Statistical physics ""Beyond equilibrium  

Science Conference Proceedings (OSTI)

The scientific challenges of the 21st century will increasingly involve competing interactions, geometric frustration, spatial and temporal intrinsic inhomogeneity, nanoscale structures, and interactions spanning many scales. We will focus on a broad class of emerging problems that will require new tools in non-equilibrium statistical physics and that will find application in new material functionality, in predicting complex spatial dynamics, and in understanding novel states of matter. Our work will encompass materials under extreme conditions involving elastic/plastic deformation, competing interactions, intrinsic inhomogeneity, frustration in condensed matter systems, scaling phenomena in disordered materials from glasses to granular matter, quantum chemistry applied to nano-scale materials, soft-matter materials, and spatio-temporal properties of both ordinary and complex fluids.

Ecke, Robert E [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

275

Physics Dept. Seminars and Colloquia  

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

Categories Nuclear Physics Seminars HETBNL Lunch Time Talks Nuclear Physics & RIKEN Theory Seminars High-Energy Physics & RIKEN Theory Seminars Particle Physics Seminars Physics...

276

Chapter_1_Physical_Security  

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

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,

277

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

278

Physics of solar neutron production: Questionable detection of neutrons  

E-Print Network (OSTI)

) A short introduction is given to astrophysics of neutron stars and to physics of dense matter in neutron stars. Observed properties of astro- physical objects containing neutron stars are discussed. Current scenarios regarding formation and evolution of neutron stars in those objects are presented. Physical

Share, Gerald

279

Morphology effects on polydispersed aerosol deposition rates  

Science Conference Proceedings (OSTI)

In the analysis of severe nuclear accidents, accurate prediction of aerosol deposition is important since, among other things, this influences the distribution of radioactive decay heat within the primary system and containment compartments. The fact that the aerosol cloud is not comprised of dense isolated spherical particles of only one size inevitably complicates such calculations but must be taken into account. Some particle deposition mechanisms are more sensitive to particle size and morphology than others so that simplifying assumptions valid for one mechanism [such as particle thermophoresis (notoriously size and morphology insensitive)] may be seriously in error for others (e.g., convective Brownian diffusion or eddy impaction). This paper deals with aggregate aerosol deposition.

Rosner, D.E.; Tandon, P. [Yale Univ., New Haven, CT (United States); Khalil, Y.F. [Northeast Utilities Service Co., Berlin, CT (United States)

1997-12-01T23:59:59.000Z

280

Automated Galaxy Morphology: A Fourier Approach  

E-Print Network (OSTI)

We use automated surface photometry and pattern classification techniques to morphologically classify galaxies. The two-dimensional light distribution of a galaxy is reconstructed using Fourier series fits to azimuthal profiles computed in concentric elliptical annuli centered on the galaxy. Both the phase and amplitude of each Fourier component have been studied as a function of radial bin number for a large collection of galaxy images using principal component analysis. We find that up to 90 percent of the variance in many of these Fourier profiles may be characterized in as few as 3 principal components and their use substantially reduces the dimensionality of the classification problem. We use supervised learning methods in the form of artificial neural networks to train galaxy classifiers that detect morphological bars at the 85-90 percent confidence level and can identify the Hubble type with a 1-sigma scatter of 1.5 steps on the 16-step stage axis of the revised Hubble system. Finally, we systematically characterize the adverse effects of decreasing resolution and S/N on the quality of morphological information predicted by these classifiers.

S. C. Odewahn; S. H. Cohen; R. A. Windhorst; N. S. Philip

2001-10-11T23:59:59.000Z

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

Amusement Park Physics!  

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

Amusement Park Physics If you have an idea for a great field trip, please click our Ideas page Amusement Park Physics, or Physics Day, is a program which seeks to teach students...

282

NIST: Physics Lab News  

Science Conference Proceedings (OSTI)

Dr. John (Jan) L. Hall shares the 2005 Nobel Prize in Physics. "... ... Physics Laboratory articles from NIST News Sources. Technology at a Glance. ...

2010-11-08T23:59:59.000Z

283

Brookhaven Chemical Physics  

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

Chemical Physics While the field of physics generally strives to find compact and universal explanations for how the components of our universe interact, chemistry is traditionally...

284

Argonne Physics Division - ATLAS  

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

(or 630-252-1911 on cell phones) Safety Aspects of radiation safety at ATLAS: Health Physics Coverage at ATLAS is provided by Argonne National Laboratory. Health Physics...

285

Nuclear & Particle Physics Directorate  

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

Brookhaven National Laboratory Nuclear and Particle Physics Program Advisory Committee Meeting 12-14 September 2006 Tuesday, 12 September Room 2-160, Bldg. 510 (Physics) 0900...

286

Nuclear & Particle Physics Directorate  

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

Nuclear & Particle Physics Directorate Nuclear and Particle Physics (NPP) at BNL comprises the Collider-Accelerator Department (including the NASA Space Radiation Laboratory,...

287

ORISE: Health physics services  

NLE Websites -- All DOE Office Websites (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...

288

Physics at COSY  

E-Print Network (OSTI)

The COSY accelerator in J\\'ulich is presented together with its internal and external detectors. The physics programme performed recently is discussed with emphasis on strangeness physics.

H. Machner

2004-11-21T23:59:59.000Z

289

Elasticity in physics - CECM  

E-Print Network (OSTI)

Dec 24, 2003 ... Elasticity as a mathematical concept finds its origin in mechanical physics. Mechanical physics describes macroscopic features of the universe,...

290

Radiation Physics Events  

Science Conference Proceedings (OSTI)

NIST Home > Radiation Physics Events. Radiation Physics Events. (showing 1 - 3 of 3). CIRMS 2012 Start Date: 10/22/2012 ...

2011-12-01T23:59:59.000Z

291

ORISE: Health physics training  

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

surveys Health physics services Radiochemical analyses Health physics training How ORISE is Making a Difference Overview Environmental characterization at ORNL a...

292

Principles of Reactor Physics  

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

Nuclear Reactor Physics M A Smith Argonne National Laboratory Nuclear Engineering Division Phone: 630-252-9747, Email: masmith@anl.gov Abstract: Nuclear reactor physics deals with...

293

Physical viscosity in smoothed particle hydrodynamics simulations of galaxy clusters  

E-Print Network (OSTI)

Most hydrodynamical simulations of galaxy cluster formation carried out to date have tried to model the cosmic gas as an ideal, inviscid fluid, where only a small amount of (unwanted) numerical viscosity is present, arising from practical limitations of the numerical method employed, and with a strength that depends on numerical resolution. However, the physical viscosity of the gas in hot galaxy clusters may in fact not be negligible, suggesting that a self-consistent treatment that accounts for the internal gas friction would be more appropriate. To allow such simulations using the smoothed particle hydrodynamics (SPH) method, we derive a novel SPH formulation of the Navier-Stokes and general heat transfer equations and implement them in the GADGET-2 code. We include both shear and bulk viscosity stress tensors, as well as saturation criteria that limit viscous stress transport where appropriate. Adopting Braginskii's parameterization for the shear viscosity of hot gaseous plasmas, we then study the influence of viscosity on the interplay between AGN-inflated bubbles and the surrounding intracluster medium (ICM). We find that certain bubble properties like morphology, maximum clustercentric radius reached, or survival time depend quite sensitively on the assumed level of viscosity. Interestingly, the sound waves launched into the ICM by the bubble injection are damped by physical viscosity, establishing a non-local heating process. Finally, we carry out cosmological simulations of galaxy cluster formation with a viscous intracluster medium. Viscosity modifies the dynamics of mergers and the motion of substructures through the cluster atmosphere. Substructures are generally more efficiently stripped of their gas, leading to prominent long gaseous tails behind infalling massive halos. (Abridged)

Debora Sijacki; Volker Springel

2006-05-11T23:59:59.000Z

294

Galaxy Zoo: the dependence of morphology and colour on environment  

E-Print Network (OSTI)

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

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

2008-05-16T23:59:59.000Z

295

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.

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

2013-11-05T23:59:59.000Z

296

NIST Quantum Physics Division Staff  

Science Conference Proceedings (OSTI)

Quantum Physics Division. Staff. Name, Position, Phone. ... Physics Laboratory. Quantum Physics Division. Thomas O'Brian, Acting Chief. ...

2013-09-10T23:59:59.000Z

297

Elementary particle physics and high energy phenomena  

SciTech Connect

This report discusses the following research in high energy physics: the properties of the z neutral boson with the SLD detector; the research and development program for the SDC muon detector; the fixed-target k-decay experiments; the Rocky Mountain Consortium for HEP; high energy photoproduction of states containing heavy quarks; and electron-positron physics with the CLEO II and Mark II detectors. (LSP).

Barker, A.R.; Cumalat, J.P.; de Alwis, S.P.; DeGrand, T.A.; Ford, W.T.; Mahanthappa, K.T.; Nauenberg, U.; Rankin, P.; Smith, J.G.

1992-06-01T23:59:59.000Z

298

Argonne TDC: Physical Sciences  

Emergency Response. Engineering. Environmental Research. Fuel Cells. Imaging Technology. Material Science. Nanotechnology. Physical Sciences. Sensor ...

299

Physics Department Safety & Training Office  

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

number (631) 344-3456 and follow the automated instructions. High Energy Physics Nuclear Physics Condensed Matter Physics The Physics Safety and Training office hosts Group...

300

Particle Physics Education Sites  

NLE Websites -- All DOE Office Websites (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.

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

Key Physical Mechanisms in Nanostructured Solar Cells  

DOE Green Energy (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

302

ORISE: Environmental Assessment and Health Physics  

NLE Websites -- All DOE Office Websites (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

303

Dendritic Subunits Determined by Dendritic Morphology  

Science Conference Proceedings (OSTI)

A theoretical framework is presented in which arbitrarily branched dendritic structures with nonhomogeneous membrane properties and nonuniform geometry can be transformed into an equivalent unbranched structure (equivalent cable). Rall's equivalent cylinder ...

K. A. Lindsay; J. M. Ogden; J. R. Rosenberg

2001-11-01T23:59:59.000Z

304

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 Book "Give me matter and motion, and I will construct the universe." ­ Rene Descartes (1640) "One ought) Dedication of the book is to two physicists who gave us particular inspiration. Their contributions

California at Santa Cruz, University of

305

Top Physics Results from CDF  

E-Print Network (OSTI)

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

Gervasio Gomez

2005-05-30T23:59:59.000Z

306

NETL: Methane Hydrates - DOE/NETL Projects - Properties of Hydrate...  

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

is to measure physical, chemical, mechanical, and hydrologic property changes in methane hydrate-bearing sediments subjected to injection of carbon dioxide and nitrogen....

307

Evaluation of Fluid Transport Properties of Coal Bed Methane Reservoirs.  

E-Print Network (OSTI)

??Determination of petro-physical properties of coal bed methane (CBM) reservoirs is essential in evaluating a potential prospect for commercial exploitation. In particular, permeability is the (more)

Alexis, Dennis Arun

2013-01-01T23:59:59.000Z

308

`Trapped' Ions Provide First View of Light Property  

Science Conference Proceedings (OSTI)

... PHYSICS `Trapped' Ions Provide First View of Light Property. ... Quantum theory states that light can act either as a wave or as a particle. ...

309

The morphological development of a wood burl shader  

E-Print Network (OSTI)

In the field of computer graphics, shaders provide an interface between lights and surfaces, giving the appearance of metal, plastic, wood, etc. As the field progresses, more and more shaders are required to simulate a wider and wider variety of materials. We present a new shader for the simulation of wood burl, a complex material used in furniture, art, car interiors, and a host of other luxury items. This shader was developed through a morphological approach - a study of the original material, its structure, and growth. Consequently, research began with a thorough look at wood burl, polished and unpolished, in an assortment of different species. We discovered the appearance can be broken into three sub-appearances - knots, curl, and a subtle undergrain. These three sub-appearances interact to create the characteristic swirls and whorls of burl. For the subtle undergrain, we used a common oak shader, added noise, and faded it into the background. We then developed a system of randomly placing points through the material to act as knots. Since the knots grow and distort the surrounding grain, we used distance-scaled forces to push the surface coordinates around and between all the knots. When the oak shader is applied, it appears to swirl and curl around the knots, much like a stream between rocks. This created the first level of curl or swirly grained wood, but one level alone appeared flat. To solve this, we procedurally blended levels of curl to give a look of increased depth. Finally, we added reflection, gloss, and other surface properties to give a look of warmth and polish. All of these properties are controlled by a set of parameters in the shader's interface. By adjusting these parameters, the user can emulate a variety of different burl types.

Moyer, Robert Simms

2003-12-01T23:59:59.000Z

310

A HST/WFC3-IR MORPHOLOGICAL SURVEY OF GALAXIES AT z = 1.5-3.6. II. THE RELATION BETWEEN MORPHOLOGY AND GAS-PHASE KINEMATICS  

SciTech Connect

We analyze rest-frame optical morphologies and gas-phase kinematics as traced by rest-frame far-UV and optical spectra for a sample of 204 star-forming galaxies in the redshift range z {approx} 2-3 drawn from the Keck Baryonic Structure Survey. We find that spectroscopic properties and gas-phase kinematics are closely linked to morphology: compact galaxies with semimajor axis radii r {approx}< 2 kpc are substantially more likely than their larger counterparts to exhibit Ly{alpha} in emission. Although Ly{alpha} emission strength varies widely within galaxies of a given morphological type, all but one of 19 galaxies with Ly{alpha} equivalent width W {sub Ly{alpha}} > 20 A have compact and/or multiple-component morphologies with r {<=} 2.5 kpc. The velocity structure of absorption lines in the galactic continuum spectra also varies as a function of morphology. Galaxies of all morphological types drive similarly strong outflows (as traced by the blue wing of interstellar absorption line features), but the outflows of larger galaxies are less highly ionized and exhibit larger optical depth at the systemic redshift that may correspond to a decreasing efficiency of feedback in evacuating gas from the galaxy. This v {approx} 0 km s{sup -1} gas is responsible both for shifting the mean absorption line redshift and attenuating W {sub Ly{alpha}} (via a longer resonant scattering path) in galaxies with larger rest-optical half-light radii. In contrast to galaxies at lower redshifts, there is no evidence for a correlation between outflow velocity and inclination, suggesting that outflows from these puffy and irregular systems may be poorly collimated. Our observations are broadly consistent with theoretical models of inside-out growth of galaxies in the young universe, in which typical z {approx} 2-3 star-forming galaxies are predominantly unstable, dispersion-dominated, systems fueled by rapid gas accretion that later form extended rotationally supported disks when stabilized by a sufficiently massive stellar component.

Law, David R. [Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, Ontario M5S 3H4 (Canada); Steidel, Charles C. [Department of Astronomy, California Institute of Technology, MS 249-17, Pasadena, CA 91125 (United States); Shapley, Alice E.; Nagy, Sarah R. [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States); Reddy, Naveen A. [Department of Physics and Astronomy, University of California, Riverside, CA 92521 (United States); Erb, Dawn K., E-mail: drlaw@di.utoronto.ca, E-mail: ccs@astro.caltech.edu, E-mail: aes@astro.ucla.edu, E-mail: snagy@ucla.edu [Department of Physics, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, WI 53201 (United States)

2012-11-01T23:59:59.000Z

311

Physical Chemistry of Ionic Liquids  

NLE Websites -- All DOE Office Websites (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,

312

Instability and morphology of polymer solutions coating a fiber  

E-Print Network (OSTI)

We report an experimental study on the dynamics of a thin film of polymer solution coating a vertical fiber. The liquid film has first a constant thickness and then undergoes the Rayleigh-Plateau instability which leads to the formation of sequences of drops, separated by a thin film, moving down at a constant velocity. Different polymer solutions are used, i.e. xanthan solutions and polyacrylamide (PAAm) solutions. These solutions both exhibit shear-rate dependence of the viscosity, but for PAAm solutions, there are strong normal stresses in addition of the shear-thinning effect. We characterize experimentally and separately the effects of these two non-Newtonian properties on the flow on the fiber. Thus, in the flat film observed before the emergence of the drops, only shear-thinning effect plays a role and tends to thin the film compared to the Newtonian case. The effect of the non-Newtonian rheology on the Rayleigh-Plateau instability is then investigated through the measurements of the growth rate and the wavelength of the instability. Results are in good agreement with linear stability analysis for a shear-thinning fluid. The effect of normal stress can be taken into account by considering an effective surface tension which tends to decrease the growth rate of the instability. Finally, the dependence of the morphology of the drops with the normal stress is investigated and a simplified model including the normal stress within the lubrication approximation provides good quantitative results on the shape of the drops.

Franois Boulogne; Ludovic Pauchard; Frdrique Giorgiutti-Dauphin

2012-05-17T23:59:59.000Z

313

The nanoporous morphology of photopolymerized crosslinked polyacrylamide hydrogels  

E-Print Network (OSTI)

Nanoporous polymer hydrogels offer a desirable combination of mechanical, optical, and transport characteristics that have placed them at the core of a variety of biomedical technologies including engineered tissue scaffolds, substrates for controlled release of pharmaceutical compounds, and sieving matrices for electrophoretic separation of DNA and proteins. Ultimately, we would like to obtain a detailed picture of the nanoscale pore morphology and understand how it can be manipulated so that we can rationally identify gel formulations best suited for a specific application. But this goal has proven elusive because the most fundamental descriptors of the pore network architecture (e.g., the average pore size and its polydispersity) are particularly difficult to measure in polymer hydrogels. Here we introduce an approach that enables both the mean pore size and the pore size distribution to be quantitatively determined without prior knowledge of any physical material parameters A novel technique to prepare TEM samples was developed so that the nanoscale hydrogel pore size, pore shape and distribution are clearly visualized and quantitatively studied for the first time. The pore sizes of the hydrogel are also estimated with rheology. A new fixture is used in the rheometer and the whole polymerization process can be directly studied using an in-situ rheology experiment. A series of thermoporometry experiments are also conducted, and suitable methods and equations to study hydrogel pore size and distribution are chosen. The pore size derived from TEM, rheology, DSC is compared and their values are self-consistent. These techniques help us understand how the nanoporous morphology of crosslinked polyacrylamide hydrogels is influenced by their chemical composition and polymerization conditions. It is interesting to find hydrogels with similar pore size but different distribution. For two hydrogels with similar pore size, the broader the distribution, the faster the release rate and the higher the accumulated release percentage. So we can control the release of trapped molecules by simply varying the hydrogel pore size distribution. This discovery would have a very promising potential in the application of pharmaceuticals.

Wang, Jian

2008-05-01T23:59:59.000Z

314

Plasma confinement. [Physics for magnetic geometries  

SciTech Connect

The physics of plasma confinement by a magnetic field is developed from the basic properties of plasmas through the theory of equilibrium, stability, and transport in toroidal and open-ended configurations. The close relationship between the theory of plasma confinement and Hamiltonian mechanics is emphasized, and the modern view of macroscopic instabilities as three-dimensional equilibria is given.

Boozer, A.H.

1985-03-01T23:59:59.000Z

315

STANFORD ROCK PHYSICS BOREHOLE GEOPHYSICS PROJECT  

E-Print Network (OSTI)

TABLE OF CONTENTS A: Rock Physics and Geology. Pressure-solution models and the velocity......................................................... A3 Pressure trends of compressional-and shear-wave velocities measured measured in sands to 20 MPA.....................................................C3 Properties of pore fluids at very high pressures from equations of state. Walls & Dvorkin

Nur, Amos

316

Physical Aging of Arsenic Trisulfide Thick Films and Bulk Materials Rong-Ping Wang,w  

E-Print Network (OSTI)

Physical Aging of Arsenic Trisulfide Thick Films and Bulk Materials Rong-Ping Wang,w Andrei Rode referred to as a physical aging phenomenon.7,8 To avoid the changes in physical properties caused by physical aging, a material with completely saturated aging should be used in chalcogenide-based devices

Chen, Ying

317

Nuclear & Particle Physics Directorate  

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

8-9 May 2008 Thursday, 8 May Room 2-160, Bldg. 510 (Physics) 0830 Executive Session Large Seminar Room, Bldg. 510 (Physics) (talk+questions) 0900 PHENIX FY09 Beam Use Proposal and...

318

Nuclear & Particle Physics Directorate  

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

29-30 March 2007 Thursday, 29 March Room 2-160, Bldg. 510 (Physics) 0900 Executive Session Large Seminar Room, Bldg. 510 (Physics) (talk+questions) 0930 R20 Search for Magnetic...

319

Modeling from Physical Principles  

E-Print Network (OSTI)

This article, on the other hand, shall concentrate on issues relating to modeling the physical plant to be controlled. Modeling physical systems seems to be a straightforward task. Since physical systems and experiments are often reproducible in a reliable fashion, since measurements from physical systems are frequently available in abundance and of high quality, since the meta--laws of physics are mostly well understood, it seems to be a particularly easy task to come up with accurate mathematical descriptions of most physical plants. Yet, there are some typical pitfalls and frequent misconceptions about the modeling of physical systems, especially among control engineers. These shall be illustrated, and a sound methodological basis for modeling from physical principles shall then be created. 2 Common Misconceptions

Franois E. Cellier; Hilding Elmqvist; Martin Otter

1996-01-01T23:59:59.000Z

320

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

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

Physics Flash Newsletter  

NLE Websites -- All DOE Office Websites (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 September 2013 |...

322

Precision Electroweak Physics  

Science Conference Proceedings (OSTI)

The status in electroweak precision physics is reviewed. I present a brief summary of the latest data, global fit results, a few implications for new physics, and an outlook.

Erler, Jens [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, 04510 Mexico D.F. (Mexico)

2006-09-25T23:59:59.000Z

323

Chemical Physics Portal  

Science Conference Proceedings (OSTI)

... spectroscopy. Ultrafast lasers are used to more. >> see all Chemical Physics programs and projects ... *. Bookmark and Share. ...

2010-10-01T23:59:59.000Z

324

Introduction to Neutrino Physics  

SciTech Connect

I present a basic introduction to the physics of the neutrino, with emphasis on experimental results and developments.

Linares, Edgar Casimiro [Division de Ciencias e Ingenierias Campus Leon, Loma del Bosque 103 Col. Lomas del Campestre, C.P. 37150 Leon (Mexico) and Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, Av. Complutense, 22, C.P. 28040, Madrid (Spain)

2009-04-30T23:59:59.000Z

325

NIST: Physics Laboratory Brochure  

Science Conference Proceedings (OSTI)

... measurement methods for determining the structure and function of biological systems, and exploring the mysteries of quantum physics - who are ...

326

Electric field manipulation of polymer nanocomposites: processing and investigation of their physical characteristics  

E-Print Network (OSTI)

Research in nanoparticle-reinforced composites is predicated by the promise for exceptional properties. However, to date the performance of nanocomposites has not reached its potential due to processing challenges such as inadequate dispersion and patterning of nanoparticles, and poor bonding and weak interfaces. The main objective of this dissertation is to improve the physical properties of polymer nanocomposites at low nanoparticle loading. The first step towards improving the physical properties is to achieve a good homogenous dispersion of carbon nanofibers (CNFs) and single wall carbon nanotubes (SWNTs) in the polymer matrix; the second step is to manipulate the well-dispersed CNFs and SWNTs in polymers by using an AC electric field. Different techniques are explored to achieve homogenous dispersion of CNFs and SWNTs in three polymer matrices (epoxy, polyimide and acrylate) without detrimentally affecting the nanoparticle morphology. The three main factors that influence CNF and SWNT dispersion are: use of solvent, sonication time, and type of mixing. Once a dispersion procedure is optimized for each polymer system, the study moves to the next step. Low concentrations of well dispersed CNFs and SWNTs are successfully manipulated by means of an AC electric field in acrylate and epoxy polymer solutions. To monitor the change in microstructure, alignment is observed under an optical microscope, which identifies a two-step process: rotation of CNFs and SWNTs in the direction of electric field and chaining of CNFs and SWNTs. In the final step, the aligned microstructure is preserved by curing the polymer medium, either thermally (epoxy) or chemically (acrylate). The conductivity and dielectric constant in the parallel and perpendicular direction increased with increase in alignment frequency. The values in the parallel direction are greater than the values in the perpendicular direction and anisotropy in conductivity increased with increase in AC electric field frequency. There is an 11 orders magnitude increase in electrical conductivity of 0.1 wt% CNF-epoxy nanocomposite that is aligned at 100 V/mm and 1 kHz frequency for 90 minutes. Electric field magnitude, frequency and time are tuned to improve and achieve desired physical properties at very low nanoparticle loadings.

Banda, Sumanth

2008-12-01T23:59:59.000Z

327

Quantum Physics Einstein's Gravity  

E-Print Network (OSTI)

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

Visser, Matt

328

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

329

Physics Department Alumni Reunion  

E-Print Network (OSTI)

Physics Department Alumni Reunion September 21-22, 2012 Collegeof Communication (COM) MetcalfScienceCenter (SCI) MetcalfPlaza CommonwealthAvenue PhysicsResearch Building LifeScienceand Engineering Beacon Barabasi (PhD 1994) Distinguished University Professor of Physics, Northeastern University Taming

330

Charm physics: theoretical review  

E-Print Network (OSTI)

We review recent developments in charm physics, focusing on the physics of charmed mesons. We discuss charm spectroscopy, decay constants, as well as searches for new physics with charmed mesons. We discuss D0-anti-D0 mixing and CP-violation in charm decays. We also present the modified Nelson plot of charm mixing predictions.

Alexey A. Petrov

2003-11-28T23:59:59.000Z

331

Control physical models  

Science Conference Proceedings (OSTI)

This paper describes design of model physical model of rectification column. Physical model is appointed as a demonstration system control for distillation by means of control system SIMATIC PCS7 from company SIEMENS. The SIMATIC PCS7 Process control ... Keywords: description, distillation, physical model, process control system

Tom Dvo?k; Jan Blek

2005-03-01T23:59:59.000Z

332

New Morphological Paradigm Uncovered in Organic Solar Cells  

NLE Websites -- All DOE Office Websites (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...

333

Effects of Arc Welding Process on Microstructure and Morphology of ...  

Science Conference Proceedings (OSTI)

Presentation Title, Effects of Arc Welding Process on Microstructure and Morphology of Flake Graphite in Grey Cast Iron. Author(s), Arash Elhami Khorasani,...

334

Effects of Grain Boundary Morphology and Dislocation Substructure ...  

Science Conference Proceedings (OSTI)

South Dakota School of Mines & Technology, Rapid City, SD 57701, USA. Abstract. An extensive investigation of the effects of grain boundary morphology.

335

Galaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky Survey  

E-Print Network (OSTI)

We present the data release for Galaxy Zoo 2 (GZ2), a citizen science project with more than 16 million morphological classifications of 304,122 galaxies drawn from the Sloan Digital Sky Survey. Morphology is a powerful probe for quantifying a galaxy's dynamical history; however, automatic classifications of morphology (either by computer analysis of images or by using other physical parameters as proxies) still have drawbacks when compared to visual inspection. The large number of images available in current surveys makes visual inspection of each galaxy impractical for individual astronomers. GZ2 uses classifications from volunteer citizen scientists to measure morphologies for all galaxies in the DR7 Legacy survey with m_r>17, in addition to deeper images from SDSS Stripe 82. While the original Galaxy Zoo project identified galaxies as early-types, late-types, or mergers, GZ2 measures finer morphological features. These include bars, bulges, and the shapes of edge-on disks, as well as quantifying the relat...

Willett, Kyle W; Bamford, Steven P; Masters, Karen L; Simmons, Brooke D; Casteels, Kevin R V; Edmondson, Edward M; Fortson, Lucy F; Kaviraj, Sugata; Keel, William C; Melvin, Thomas; Nichol, Robert C; Raddick, M Jordan; Schawinski, Kevin; Simpson, Robert J; Skibba, Ramin A; Smith, Arfon M; Thomas, Daniel

2013-01-01T23:59:59.000Z

336

Algorithms and Software Tools for Extracting Coastal Morphological Information from Airborne LiDAR Data  

E-Print Network (OSTI)

With the ever increasing population and economic activities in coastal areas, coastal hazards have become a major concern for coastal management. The fundamental requirement of coastal planning and management is the scientific knowledge about coastal forms and processes. This research aims at developing algorithms for automatically extracting coastal morphological information from LiDAR data. The primary methods developed by this research include automated algorithms for beach profile feature extraction and change analysis, and an object-based approach for spatial pattern analysis of coastal morphologic and volumetric change. Automated algorithms are developed for cross-shore profile feature extraction and change analysis. Important features of the beach profile such as dune crest, dune toe, and beach berm crest are extracted automatically by using a scale-space approach and by incorporating contextual information. The attributes of important feature points and segments are derived to characterize the morphologic properties of each beach profile. Beach profiles from different time periods can be compared for morphologic and volumetric change analysis. An object-oriented approach for volumetric change analysis is developed to identify and delineate individual elevation change patches as discrete objects. A set of two-dimensional and three-dimensional attributes are derived to characterize the objects, which includes planimetric attributes, shape attributes, surface attributes, volumetric attributes, and summary attributes. Both algorithms are implemented as ArcGIS extension modules to perform the feature extraction and attribute derivation for coastal morphological change analysis. To demonstrate the utility and effectiveness of algorithms, the cross-shore profile change analysis method and software tool are applied to a case study area located at southern Monterey Bay, California, and the coastal morphology change analysis method and software tool are applied to a case study area located on Assateague Island, Maryland. The automated algorithms facilitate the efficient beach profile feature analysis over large geographical area and support the analysis of the spatial variations of beach profile changes along the shoreline. The explicit object representation of elevation change patches makes it easy to localize erosion hot spots, to classify the elevation changes caused by various mechanisms, and to analyze spatial pattern of morphologic and volumetric changes.

Gao, Yige

2009-05-01T23:59:59.000Z

337

Los Alamos Lab: Materials Physics & Applications Division  

NLE Websites -- All DOE Office Websites (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

338

The influence of macrostructure and other physical characteristics on compressive parameters of mineral wool products.  

E-Print Network (OSTI)

??The dissertation investigates the influence of macrostructure and other physical properties on mineral wool compressive parameters. The subject of the research is rigid mineral wool (more)

Buska,; Andrius

2010-01-01T23:59:59.000Z

339

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

340

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

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

Nuclear physics and astrophysics  

SciTech Connect

We have investigated a variety of research topics on the interface of nuclear physics and astrophysics during the past year. We have continued our study of dihyperon states in dense matter and have started to make a connection between their properties in the core of neutron stars with the ongoing experimental searches at Brookhaven National Laboratory. We started to build a scenario for the origin of gamma-ray bursts using the conversion of neutron stars to strange stars close to an active galactic nucleous. We have been reconsidering the constraints due to neutron star cooling rates on the equation of state for high density matter in the light, of recent findings which show that the faster direct Urca cooling process is possible for a range of nuclear compositions. We have developed a model for the formation of primordial magnetic fields due to the dynamics of the quark-hadron phase transition. Encouraged by the most recent observational developments, we have investigated the possible origin of the boron and beryllium abundances. We have greatly improved the calculations of the primordial abundances of these elements I>y augmenting the reaction networks and by updating the most recent experimental nuclear reaction rates. Our calculations have shown that the primordial abundances are much higher than previously thought but that the observed abundances cannot be explained by primordial sources alone. We have also studied the origin of the boron and beryllium abundances due to cosmic ray spallation. Finally, we have continued to address the solar neutrino problem by investigating the impact of astrophysical uncertainties on the MSW solution for a full three-family treatment of MSW mixing.

Schramm, D.N.; Olinto, A.V.

1992-09-01T23:59:59.000Z

342

High Energy Physics Division, ANL Lattice QCD  

NLE Websites -- All DOE Office Websites (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.

343

U.S. CMS - CMS Physics  

NLE Websites -- All DOE Office Websites (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

344

Technical Highlights Atomic Physics Division  

Science Conference Proceedings (OSTI)

... Physics Division is to develop and apply atomic physics research methods ... community, and to produce and critically compile physical reference data ...

2013-06-04T23:59:59.000Z

345

NIST Atomic Physics Division - 2002  

Science Conference Proceedings (OSTI)

... produce and critically compile physical reference data ... matter physics, solid-state physics, quantum field ... coefficient that exceeds the classical limit ...

346

Multivariate and Supervised Approaches for Mathematical Morphology in Remote Sensing  

E-Print Network (OSTI)

Multivariate and Supervised Approaches for Mathematical Morphology in Remote Sensing S´ebastien Lef`evre Image Sciences, Computer Sciences and Remote Sensing Laboratory (LSIIT) Models, Image and Vision Team MM Supervised MM Applications in Remote Sensing Conclusion Mathematical Morphology is a powerful

Lefèvre, Sébastien

347

FTrace: a tool for finite-state morphology  

Science Conference Proceedings (OSTI)

In this paper we describe our work in progress on FTrace, a tool for finite-state morphology that provides a tracing facility for developers of applications for synchronic and diachronic language descriptions. We discuss not only the current tool for ... Keywords: FTrace, Prolog network-interpreter, SWI Prolog, diachronic language description, finite-state morphology, foma, tracing, xfst

James Kilbury; Katina Bontcheva; Younes Samih

2011-07-01T23:59:59.000Z

348

LES Analysis of the Aerodynamic Surface Properties for Turbulent Flows over Building Arrays with Various Geometries  

Science Conference Proceedings (OSTI)

This paper describes aerodynamic roughness properties for turbulent flows over various building arrays that represent realistic urban surface geometries. First, building morphological characteristics such as roughness density ?f and building ...

Hiromasa Nakayama; Tetsuya Takemi; Haruyasu Nagai

2011-08-01T23:59:59.000Z

349

Luminescent properties of Y2O3:Eu3+ nanocrystals prepared by molten salt synthesis  

Science Conference Proceedings (OSTI)

A series of red phosphors Y2O3:Eu3+ were prepared by the molten salt method with different surfactants. Their structures, morphologies, and the photoluminescent properties were investigated at room temperature. The particles ...

Lijun Luo, Fenfen Hu, Li Xiong, Xiaofan Li, Meili Zhou, Zhengliang Wang

2013-01-01T23:59:59.000Z

350

Condensed Matter Physics Portal  

Science Conference Proceedings (OSTI)

... NIST Measurements May Help Optimize Organic Solar Cells. ... Key Property of Graphene Sustained Over Wide Ranges of Density and Energy. ...

2012-12-20T23:59:59.000Z

351

ORISE: Health physics services  

NLE Websites -- All DOE Office Websites (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

352

physics_fest_map  

NLE Websites -- All DOE Office Websites (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

353

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

354

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

355

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

356

Physically based virtual painting  

Science Conference Proceedings (OSTI)

Tapping the compelling illusion of physical interaction with paints, brushes, surfaces, color, and light, users express the nuances of their visual and emotional imaginations.

Ming Lin; William Baxter; Vincent Scheib; Jeremy Wendt

2004-08-01T23:59:59.000Z

357

NIST Physical Reference Data  

Science Conference Proceedings (OSTI)

... Nuclear Physics Data. ... database consists of evaluated data for use in total-energy calculations of electronic structure by density-functional theory. ...

2013-06-05T23:59:59.000Z

358

Internships for Physics Majors  

Energy.gov (U.S. Department of Energy (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...

359

Physics Out Loud - Niobium  

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

Neutron Previous Video (Neutron) Physics Out Loud Main Index Next Video (Nucleus) Nucleus Niobium The element niobium is often used as a superconductor. Watch as Jefferson Lab...

360

Physics Out Loud - Nucleus  

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

Niobium Previous Video (Niobium) Physics Out Loud Main Index Next Video (Particle Accelerator) Particle Accelerator Nucleus Elena Long, A graduate student at Kent State 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.


361

High Energy Physics  

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

Untitled Document Argonne Logo DOE Logo High Energy Physics Division Home Division ES&H Personnel Publications HEP Awards HEP Computing HEP Committees Administration...

362

Argonne Physics Division - ATLAS  

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

about 4 times better than can be achieved in conventional Si detector arrangements. Physics justification: The main focus of the HELIOS research program is the study of...

363

Argonne Physics Division - ATLAS  

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

ATLAS Operations personnel, and to various experimental instrument specialists in the Physics Division. The PAC members will review each proposal for scientific merit and...

364

Project X Physics Workshop  

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

4th Workshop on Physics with a high intensity proton source, November 9-10 (Monday-Tuesday), 2009 Fermilab Home | Fermilab at Work | Fermilab Directorate Home Registration...

365

Physics Out Loud - Gluons  

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

Elementary Particles Previous Video (Elementary Particles) Physics Out Loud Main Index Next Video (Hadron) Hadron Gluons Elena Long, A graduate student at Kent State University,...

366

LHC Discovers New Physics  

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

The newest particle physics instruments for the energy frontier are CERN's Large hadron Collider and its detectors. Physicists look for new science by looking for the...

367

Nuclear Physics Links  

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

To Other Interesting Educational Pages Fusion in the Sun Other Berkeley Lab Nuclear Physics Web Pages Table of Isotopes Animated Glossary Viewing the Periodic Table of Elements...

368

Physics Out Loud - Neutron  

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

Matter Previous Video (Matter) Physics Out Loud Main Index Next Video (Niobium) Niobium Neutron Karl Slifer, a physicist based at the University of New Hampshire and who conducts...

369

Physics Out Loud - Cryomodule  

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

Cross Section Previous Video (Cross Section) Physics Out Loud Main Index Next Video (Detector) Detector Cryomodule Charlie Reece, an accelerator technology scientist, reveals the...

370

Physics Out Loud - Proton  

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

Photomultiplier Tube Previous Video (Photomultiplier Tube) Physics Out Loud Main Index Next Video (Quantum Chromodynamics (QCD)) Quantum Chromodynamics (QCD) Proton Learn about the...

371

Brookhaven Nuclear Physics  

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

Brookhaven Nuclear Physics Historically, nuclear physicists have studied the structure, characteristics, and behavior of the atomic nucleus and the nature of the nuclear force....

372

Physics Out Loud - Matter  

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

Laser Previous Video (Laser) Physics Out Loud Main Index Next Video (Neutron) Neutron Matter David Lawrence, a Jefferson Lab physicist, discusses matter...

373

Nuclear & Particle Physics Directorate  

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

at RHIC or the AGS should be submitted to the Associate Laboratory Director for Nuclear and Particle Physics, presently Steve Vigdor, Bldg. 510F, Brookhaven National...

374

Physics Out Loud  

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

Lab scientists and other experts explain some of the common words and terms used in nuclear physics research. Baryon Baryon Cerenkov Light Cerenkov Light Cross Section Cross...

375

High Energy Physics  

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

Agenda Presentations Reference Materials Participants Organizing Committee Logistics Nuclear Physics (NP) Overview Published Reports Case Study FAQs NERSC HPC Achievement Awards...

376

Nuclear & Particle Physics Directorate  

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

Brookhaven National Laboratory Nuclear and Particle Physics Program Advisory Committee Meeting June 15-16, 2009 Agenda Reference Documents Letter to Barbara Jacak and Nu Xu (129...

377

Physics Out Loud - Baryon  

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

User Facility Previous Video (User Facility) Physics Out Loud Main Index Next Video (Cerenkov Light) Cerenkov Light Baryon David Lawrence, a physicist, describes the class of...

378

Physics Out Loud - Detector  

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

Cryomodule Previous Video (Cryomodule) Physics Out Loud Main Index Next Video (Electromagnetic Force) Electromagnetic Force Detector Elena Long, a graduate student at Kent State...

379

Nuclear & Particle Physics Directorate  

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

Brookhaven National Laboratory Nuclear and Particle Physics Program Advisory Committee Meeting 7-8 June 2012 Agenda Related Documents: PHENIX Beam Use Proposal, STAR Beam Use...

380

Nuclear & Particle Physics Directorate  

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

...T. Kirk 10:15 am Coffee Break 10:30 am Physics Department Overview (see note above)...S. Aronson 11:00 am...

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

Review of Particle Physics  

E-Print Network (OSTI)

Studies for Nuclear Physics CEBAF Je?erson LabThomas Je?by CLAS and PrimEx at CEBAF, and by PANDA at GSI. Recently,

Nakamura, Kenzo

2010-01-01T23:59:59.000Z

382

Physics Out Loud - Electrons  

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

Electron Scattering Previous Video (Electron Scattering) Physics Out Loud Main Index Next Video (Elementary Particles) Elementary Particles Electrons David Lawrence, a physicist,...

383

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

384

Degeneracy in physics - CECM  

E-Print Network (OSTI)

Dec 24, 2003 ... Degeneracy in physics. In simple terms, it is understood that a statistical system at equilibrium tends towards its most probable state.

385

Physical Characteristics of Children  

Science Conference Proceedings (OSTI)

... rigid platform constructed of a light weight aluminum ... Physical Growth of Alabama White Girls Attending ... Society of Mechanical Engineers, Paper no. ...

386

New Journal of Physics  

Science Conference Proceedings (OSTI)

... 4, Janus H Wesenberg2 and Dietrich Leibfried3 1 Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland 2 ...

2012-03-05T23:59:59.000Z

387

COURSE NOTES: Physical Metallurgy  

Science Conference Proceedings (OSTI)

Jul 1, 2008 ... Citation: Bhadeshia, H.K.D.H., "Physical Metallurgy." Department of Materials Science and Metallurgy. 2006. University of Cambridge.

388

Physics of Complex Plasmas.  

E-Print Network (OSTI)

??Physics of complex plasmas is a wide and varied field. In the context of this PhD thesis I present the major results from my research (more)

Stterlin, Robert

2010-01-01T23:59:59.000Z

389

Physics Out Loud - Laser  

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

Previous Video (Hybrid Meson) Physics Out Loud Main Index Next Video (Matter) Matter Laser Learn all about different types of lasers with Jefferson Lab's Michelle Shinn, a...

390

Physical Metallurgy and Alloy Development  

Science Conference Proceedings (OSTI)

FORUMS > PHYSICAL METALLURGY AND ALLOY DEVELOPMENT ... A TMS Knowledge Packet on the Physical Metallurgy of Solders and Solder Interfaces

391

Morphology of AGN in the central kiloparsec  

E-Print Network (OSTI)

Hubble Space Telescope observations of the central kiloparsec of AGN have revealed a wealth of structure, particularly nuclear bars and spirals, that are distinct from analogous features in the disks of spiral galaxies. WFPC2 and NICMOS images of a large sample of AGN observed at high spatial resolution make it possible to quantify the frequency and detailed properties of these structures. Nearly all AGN have nuclear spiral dust lanes in the central kiloparsec, while only a small minority contain nuclear bars. If these nuclear dust spirals trace shocks in the circumnuclear, gaseous disks, they may dissipate sufficient angular momentum to fuel the active nucleus.

Martini, P

2001-01-01T23:59:59.000Z

392

Current experiments in elementary particle physics  

Science Conference Proceedings (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

393

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

2007-08-30T23:59:59.000Z

394

Physics at TESLA  

E-Print Network (OSTI)

The physics at a 500-800 GeV electron positron linear collider, TESLA, is reviewed. The machine parameters that impact directly on the physics are discussed and a few key performance goals for a detector at TESLA are given. Emphasis is placed on precision measurements in the Higgs and top sectors and on extrapolation to high energy scales in the supersymmetric scenario.

Grahame A. Blair

2001-04-25T23:59:59.000Z

395

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

396

Hadronic Physics: an Outlook  

Science Conference Proceedings (OSTI)

A brief outlook, in two senses, is presented for hadronic physics. The likely near term future for experiment and lattice effort is sketched and I speculate on future directions in theory. I also look out at other fields, presenting a short review of QCD ideas in ''Beyond the Standard Model'' physics.

Swanson, Eric S. [Dept of Physics and Astronomy, University of Pittsburgh, Pittsburgh PA 15260 (United States)

2010-08-05T23:59:59.000Z

397

LANL | Physics | LDRD  

NLE Websites -- All DOE Office Websites (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,

398

UNIRIB: Physics Topics  

NLE Websites -- All DOE Office Websites (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

399

Stridulatory organ morphology, acoustics, and function in the red imported fire ant  

E-Print Network (OSTI)

The purpose of this research was to determine whether stridulation in the red imported fire ant (RIFA) serves a significant communicative function. Three general objectives were developed. 1) Characterize the stridulatory organ (SO). 2) Determine the information content of the signal through an acoustics analysis; and 3) Determine colony level employment of the SO. Characterization of the morphology of the SO revealed a general increase in all SO parameters (length, width, distance between teeth, and total teeth) in relation to ant size. This was most evident in the worker caste. The SO was significantly different between castes suggesting that the resulting acoustical properties could serve to distinguish each caste. Morphological analysis revealed that the SO of males is thin and unlikely to be very functional. Based on the differences in the structure of the SO between female castes, the possible evolution of the SO is discussed. Characterization of the acoustical properties, pulse length and pulse carrier frequency for both directions of gaster movement, showed that both were variable and overlapped between the female castes. This suggests that signals are not altered for different contexts (Markl et. al. 1977). Pulse lengths for both directions of gaster movement were the only properties shown to be significantly different between castes, while short pulse frequency was the only acoustical property found correlated to ant size. These differences are discussed in terms of selection, as opposed to allometric variation or developmental processes. Three colony level behaviors associated with RIFAs, disturbance response, emigration, and excavation, were examined for SO employment. Stridulation was not associated with mound disturbance or employed during nest emigration. However, stridulations were found to be significantly employed during soil excavation. Thus, sound may be serving one or more possible functions: 1) As an aid in the removal of soil particles; 2) As a signal communicating a need to dig; 3) As an acoustical imaging tool; and 4. As an aid in mound construction via particle compression and the expulsion of interstitial water.

Rauth, Steven Joseph

2001-01-01T23:59:59.000Z

400

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

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

Morphology and photoluminescence of Ba0.5Sr0.5MoO4 powders by a molten salt method  

Science Conference Proceedings (OSTI)

Ba0.5Sr0.5MoO4 powders with scheelite-type tetragonal structure were successfully synthesized by a molten salt method. The structure, morphology, and luminescent property of the as-prepared powders were characterized ...

Ling Wei; Yunfei Liu; Yinong Lu; Tao Wu

2012-01-01T23:59:59.000Z

402

Argonne Physics Division - Theory Group  

NLE Websites -- All DOE Office Websites (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

403

Argonne Physics Division - Theory Group  

NLE Websites -- All DOE Office Websites (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

404

Physics Division: Los Alamos National Laboratory  

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

Physics Division Physics home Physics Division Site Home About Us Groups Applied Modern Physics, P-21 Neutron Science and Technology, P-23 Plasma Physics, P-24 Subatomic...

405

A multidimensional data model and OLAP analysis for soil physical characteristics  

Science Conference Proceedings (OSTI)

The paper describes the construction of a multidimensional data model intended for the analysis of soil physical properties. The data from the model are provided by two agricultural soil/land databases. Based on the multidimensional data model we build ... Keywords: OLAP operations, data cube, land use, multidimensional data model, on-line analytical processing (OLAP), soil physical properties

Constanta Zoie Radulescu; Marius Radulescu; Virgil Vlad; Dumitru Marian Motelica

2008-06-01T23:59:59.000Z

406

2012 CHEMISTRY & PHYSICS OF GRAPHITIC CARBON MATERIALS GORDON RESEARCH CONFERENCE, JUNE 17-22, 2012  

Science Conference Proceedings (OSTI)

This conference will highlight the urgency for research on graphitic carbon materials and gather scientists in physics, chemistry, and engineering to tackle the challenges in this field. The conference will focus on scalable synthesis, characterization, novel physical and electronic properties, structure-properties relationship studies, and new applications of the carbon materials. Contributors

Fertig, Herbert

2012-06-22T23:59:59.000Z

407

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

408

The Influence of Midtropospheric Dryness on Supercell Morphology and Evolution  

Science Conference Proceedings (OSTI)

This work studies the relationship between midtropospheric dryness and supercell thunderstorm morphology and evolution using a three-dimensional, nonhydrostatic cloud model. Environments that differ only in midtropospheric dryness are found to ...

Matthew S. Gilmore; Louis J. Wicker

1998-04-01T23:59:59.000Z

409

The effect of stirring on the morphology of birnessite nanoparticles  

Science Conference Proceedings (OSTI)

The effect of mechanical stirring on the morphology of hexagonal layer-structure birnessite nanoparticles produced from decomposition of KMnO4 in dilute aqueous H2SO4 is investigated, with characterization by X-ray diffraction ...

Marcos A. Cheney; Pradip K. Bhowmik; Shingo Moriuchi; Mario Villalobos; Shizhi Qian; Sang W. Joo

2008-01-01T23:59:59.000Z

410

The hyperbolic lattice : morphology, kinematics, and potential applications  

E-Print Network (OSTI)

This thesis is a study of the kinetics and morphology of the hyperbolic lattice. Experiments began with simple models of sticks and string and progressed to the development of a surgical retractor made from biocompatible ...

Clifford, Dale Timothy, 1966-

1999-01-01T23:59:59.000Z

411

Physics 142 Lab Syllabus Physics 142 -Spring 2008 Laboratory Schedule  

E-Print Network (OSTI)

Materials 1. Physics 142 Laboratory Manual, Spring 2008, distributed by the University Bookstore, City of Physics 141. Electricity, magnetism, optics, relativity, atomic and nuclear physics. Lab fee required for basic physics concepts in electricity and magnetism, optics, atomic physics, and radiation. 3. Develop

Farritor, Shane

412

RHIC Sextant Test -- Physics and performance  

Science Conference Proceedings (OSTI)

This paper presents beam physics and machine performance results of the Relativistic Heavy Ion Collider (RHIC) Sextant and AGS-to-RHIC (AtR) transfer line during the Sextant Test in early 1997. Techniques used to measure both machine properties (difference orbits, dispersion, and beamline optics) and beam parameters (energy, intensity, transverse and longitudinal emittances) are described. Good agreement was achieved between measured and design lattice optics. The gold ion beam quality was shown to approach RHIC design requirements.

Wei, J.; Fischer, W.; Ahrens, L. [and others

1997-07-01T23:59:59.000Z

413

Physical-chemical studies of transuranium elements  

SciTech Connect

Major advances in our continuing program to determine, interpret, and correlate the basic chemical and physical properties of the transuranium elements are summarized. Research topics include: Molar enthalpies of formation of BaCmO{sub 3} and BaCfO{sub 3}; luminescence of europium oxychloride at various pressures; and anti-stokes luminescence of selected actinide (III) compounds. 42 refs., 4 figs., 2 tabs.

Peterson, J.R.

1991-01-01T23:59:59.000Z

414

LANL | Physics | Quantum Information  

NLE Websites -- All DOE Office Websites (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

415

Physics 4: Introductory Physics Electromagnetism and Light  

E-Print Network (OSTI)

on a charged particle; 27.1-27.2 2 Thurs, Jan 6 Properties of B-field lines; flux of B- field; motion of charged particles in B field; forces on current-carrying wire in B-field 27.3-27.6 3 Tues, Jan 11 Magnetic torques on current loops; Hall effect; B-fields produced by moving charged particles 27.7-27.9, 28.1 4

Fygenson, Deborah Kuchnir

416

LHC Physics Center | (none)  

NLE Websites -- All DOE Office Websites (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

417

Courses on Beam Physics  

NLE Websites -- All DOE Office Websites (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

418

Furth Plasma Physics Libary  

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

Contacts Hours Online Access Directions Contacts Hours Online Access Directions QuickFind Main Catalog Databases PPPL Publications & Reports/PPLcat Plasma Physics E-Journals clear Click arrows to scroll for more clear Plasma Physics Colloquia The Global Carbon Cycle and Earth's Climate - January 15, 2014 Addressing Big Data Challenges in Simulation-based Science - January 22, 2014 "The Usefulness of Useless Knowledge?: The History of the Institute for Advanced Study - January 29, 2014 PM-S-1 PDF PM-S-2 PDF PM-S-3 PDF PM-S-4 PDF PM-S-5 PDF PM-S-6 PDF See All Library History Intro 950 1960-1970 1980 1990 2000 Quick Order Article Express Borrow Direct Interlibrary Loan PPL Book Request More Resources and Services Search & Find Articles & Databases - Plasma Physics, Physics, Engineering & Technology,

419

Physics | Department of Energy  

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

Physics Physics Physics On January 13, 2012, Lawrence Berkeley National Laboratory senior scientist Dr. Saul Perlmutter spoke with Energy Department staff about his research that earned him a 2011 Nobel Prize in Physics. Featured Dark Energy Cam: Fermilab Expands Understanding of Expanding Universe Researchers at Fermi National Lab team stand beside the 570-megapixels, five-ton Dark Energy camera, which will be capable of measuring the expansion of the universe - and developing better models about how dark energy works. | Photo by Reidar Hahn, Fermi National Lab In Dark Energy science, scientists have found flaws in accepted theories using them to build even better models of how nature actually works. Higgs Boson May Be Within Sight

 Physicists from the European Organization for Nuclear Research (CERN)

420

Nuclear & Particle Physics Directorate  

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

AGENDA DOE Annual High Energy Physics Program Review Brookhaven National Laboratory 17-19 April 2006 Monday, April 17 - Berkner Hall 15:00 Executive Session - Berkner B 16:30 Tour...

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

Nuclear & Particle Physics Directorate  

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

High Energy Physics Review, 22-23 April 2004 Click on an agenda item below to access a PDF version of the speaker's slides. NOTE: If your browser displays a blank page for any...

422

Argonne Physics Division - ATLAS  

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

States Naval Academy hartley@usna.edu Mark Riley Florida State University mriley@physics.fsu.edu Alan Wuosmaa (chair) Western Michigan University alan.wuosmaa@wmich.edu The...

423

Argonne Physics Division - ATLAS  

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

are nearing completion. In addition, the role of ATLAS for the low-energy nuclear physics community needs to be revisited in light of the decision to site the Facility for...

424

Particle Physics Experiment  

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

What Is A Particle Physics Experiment? The word "experiment" often makes people envision a scientist in white lab coat and goggles walking into the lab, pouring some test tubes...

425

Argonne Physics Division - ATLAS  

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

the policy and procedures related to access to the ATLAS Facility. 2.0 POLICY It is Physics Division policy that access to the ATLAS Facility is restricted to persons who are...

426

Nuclear & Particle Physics Directorate  

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

AGENDA Brookhaven National Laboratory High Energy and Nuclear Physics Program Advisory Committee Meeting 23-24 March 2006 Thursday, 23 March Executive Session Room 2-160, Bldg. 510...

427

Nuclear & Particle Physics Directorate  

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

Nuclear & Particle Physics Program Advisory Committee Meeting 21-22 June 2010 Agenda Submitted Proposals STAR Beam Use Proposal PHENIX Beam Use Proposal LoI: Feasibility Test of...

428

Physics Out Loud - Hadron  

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

Gluons Previous Video (Gluons) Physics Out Loud Main Index Next Video (Hybrid Meson) Hybrid Meson Hadron David Lawrence, a physicist, uses a little Greek in his description of a...

429

Nuclear & Particle Physics Directorate  

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

of detector ops. Plans for future running; how will VTX be exploited to deliver physics? B. Jacak (25+15) 10:30 Break 10:45 STAR New results and accomplishments Plans for...

430

Nuclear & Particle Physics Directorate  

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

Perspective...T. Kirk 30 +10 9:40 am RHIC Experiments: Physics Department Perspective.....T. Ludlam 25+10 10:15 am Coffee Break 10:30 am CA-D...

431

Nuclear & Particle Physics Directorate  

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

- P. Chaudhari 09:15 am BNL Overview and Future Directions - S. Aronson 10:00 am Physics Department Overview - S. Dawson 10:30 am Coffee Break 10:45 am Overview of U.S. ATLAS...

432

Nuclear & Particle Physics Directorate  

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

Annual DOENuclear Physics Review of RHIC Science and Technology July 6-8, 2005 Berkner Hall, BNL Agenda Wednesday, July 6 Berkner Room B 8:00 am DOE Executive Session 8:45 am...

433

Nuclear & Particle Physics Directorate  

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

DOE RHIC Facility Operations Review, 28-30 June 2010. Annual DOE Review of High Energy Physics Science & Technology, 19-21 May 2010 Report of 2010 ATLAS Project Manager's Review,...

434

Nuclear & Particle Physics Directorate  

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

Draft Agenda Brookhaven Nuclear and Particle Physics Program Advisory Committee Meeting 6-8 June 2011 Reference Documents PAC Recommendations, 21-22 June 2010 Charge to PAC for...

435

Nuclear Physics Presentations  

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

Fusion in the Sun Quark Matter 2004 Teacher Workshop - There are a number of presentations at a high school level which show the field of high energy nuclear physics - the search...

436

Review of Particle Physics  

E-Print Network (OSTI)

on High-Energy Physics, Tbilisi 1976 ; J.D. Bjorken, Phys.Fundamental Research TBIL Tbilisi State University TELA Tel-Fukushima, Japan Genova, Italy Tbilisi, Republic of Georgia

Nakamura, Kenzo

2010-01-01T23:59:59.000Z

437

Top quark physics: Overview  

SciTech Connect

In this presentation I will primarily focus on top quark physics but I will include a discussion of the W-boson mass and the possibility of discovering a light Higgs boson via associated production at the Tevatron.

Parke, S.

1998-01-01T23:59:59.000Z

438

Nuclear & Particle Physics Directorate  

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

Physics Program Advisory Committee Meeting 3-5 November 2005 RHIC Mid-Term Strategic Plan: 2006-2011 (Interim Report) Beam Use Proposals BRAHMS PHENIX STAR Agenda Thursday, 3...

439

On ENSO Physics  

Science Conference Proceedings (OSTI)

Two extended integrations of general circulation models (GCMs) are examined to determine the physical processes operating during an ENSO cycle. The first integration is from the Hamburg version of the ECMWF T21 atmospheric model forced with ...

T. P. Barnett; M. Latif; E. Kirk; E. Roeckner

1991-05-01T23:59:59.000Z

440

Higgs and Electroweak Physics  

E-Print Network (OSTI)

This lecture discusses the Higgs boson sector of the SM and the MSSM, including their connection to electroweak precision physics and the searches for SM and SUSY Higgs bosons at the LHC.

Heinemeyer, S

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.


441

Neutrino Oscillation Physics  

Science Conference Proceedings (OSTI)

To complement the neutrino-physics lectures given at the 2011 International School on Astro Particle Physics devoted to Neutrino Physics and Astrophysics (ISAPP 2011; Varenna, Italy), at the 2011 European School of High Energy Physics (ESHEP 2011; Cheila Gradistei, Romania), and, in modified form, at other summer schools, we present here a written description of the physics of neutrino oscillation. This description is centered on a new way of deriving the oscillation probability. We also provide a brief guide to references relevant to topics other than neutrino oscillation that were covered in the lectures. Neutrinos and photons are by far the most abundant elementary particles in the universe. Thus, if we would like to comprehend the universe, we must understand the neutrinos. Of course, studying the neutrinos is challenging, since the only known forces through which these electrically-neutral leptons interact are the weak force and gravity. Consequently, interactions of neutrinos in a detector are very rare events, so that very large detectors and intense neutrino sources are needed to make experiments feasible. Nevertheless, we have confirmed that the weak interactions of neutrinos are correctly described by the Standard Model (SM) of elementary particle physics. Moreover, in the last 14 years, we have discovered that neutrinos have nonzero masses, and that leptons mix. These discoveries have been based on the observation that neutrinos can change from one 'flavor' to another - the phenomenon known as neutrino oscillation. We shall explain the physics of neutrino oscillation, deriving the probability of oscillation in a new way. We shall also provide a very brief guide to references that can be used to study some major neutrino-physics topics other than neutrino oscillation.

Kayser, Boris

2012-06-01T23:59:59.000Z

442

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

443

Women in Physics | Status of Women in Physics  

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

in Physics Report on women in physics by country A report on the status of women in physics in 65 countries written by 2008 participants of the 3rd ICWIP, which was held in Korea...

444

PERSPECTIVES OF NUCLEAR PHYSICS  

E-Print Network (OSTI)

The organizers of this meeting have asked me to present perspectives of nuclear physics. This means to identify the areas where nuclear physics will be expanding in the next future. In six chapters a short overview of these areas will be given, where I expect that nuclear physics will develop quite fast: (1) Quantum Chromodynamics and effective field theories in the confinement region. (2) Nuclear structure at the limits. (3) High energy heavy ion collisions. (4) Nuclear astrophysics. (5) Neutrino physics. (6) Test of physics beyond the standard model by rare processes. After a survey over these six points I will pick out a few topics where I will go more in details. There is no time to give for all six points detailed examples. I shall discuss the following examples of the six topics mentionned above: (1) The perturbative chiral quark model and the nucleon ?-term. (2) VAMPIR (Variation After Mean field Projection In Realistic model spaces and with realistic forces) as an example of the nuclear structure renaissance. (3) Measurement of important astrophysical nuclear reactions in the Gamow peak. (4) The solar neutrino problem. As examples for testing new physics beyond the standard model by rare processes I had prepared to speak about the measurement of the electric neutron dipole moment and of the neutrinoless double beta decay. But the time is limited and so I have to skip these points, although they are extremely interesting.

Amand Faessler

2002-01-01T23:59:59.000Z

445

Electron beam physical vapor deposition of thin ruby films for remote temperature sensing  

SciTech Connect

Thermographic phosphors (TGPs) possessing temperature-dependent photoluminescence properties have a wide range of uses in thermometry due to their remote access and large temperature sensitivity range. However, in most cases, phosphors are synthesized in powder form, which prevents their use in high resolution micro and nanoscale thermal microscopy. In the present study, we investigate the use of electron beam physical vapor deposition to fabricate thin films of chromium-doped aluminum oxide (Cr-Al{sub 2}O{sub 3}, ruby) thermographic phosphors. Although as-deposited films were amorphous and exhibited weak photoluminescence, the films regained the stoichiometry and {alpha}-Al{sub 2}O{sub 3} crystal structure of the combustion synthesized source powder after thermal annealing. As a consequence, the annealed films exhibit both strong photoluminescence and a temperature-dependent lifetime that decreases from 2.9 ms at 298 K to 2.1 ms at 370 K. Ruby films were also deposited on multiple substrates. To ensure a continuous film with smooth surface morphology and strong photoluminescence, we use a sapphire substrate, which is thermal expansion coefficient and lattice matched to the film. These thin ruby films can potentially be used as remote temperature sensors for probing the local temperatures of micro and nanoscale structures.

Li Wei; Coppens, Zachary J.; Greg Walker, D.; Valentine, Jason G. [Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37212 (United States)

2013-04-28T23:59:59.000Z

446

P1.15 The Optical Properties and Morphology of Selective Area ...  

Science Conference Proceedings (OSTI)

Abstract Scope, III-nitride based semiconductors have attracted as the high performance light emitting devices, solar-blind ultraviolet detectors, and high power,...

447

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

E-Print Network (OSTI)

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

Cao, Guozhong

448

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

449

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.

450

The Physics of Music and the Music of Physics  

Science Conference Proceedings (OSTI)

... in life without caring about the underlying physics, they become even more beautiful when we dive into their simple physical and mathematical ...

2010-10-05T23:59:59.000Z

451

Department of Physics & Astronomy Experimental Particle Physics Group  

E-Print Network (OSTI)

Department of Physics & Astronomy Experimental Particle Physics Group Kelvin Building, University mrad. The upstream detector, RICH1, uses aerogel and C 4 F 10 radiators to identify particles

Glasgow, University of

452

Nitriding of super alloys for enhancing physical properties  

DOE Patents (OSTI)

The invention teaches the improvement of certain super alloys by exposing the alloy to an atmosphere of elemental nitrogen at elevated temperatures in excess of 750/sup 0/C but less than 1150/sup 0/C for an extended duration, viz., by nitriding the surface of the alloy, to establish barrier nitrides of the order of 25 to 100 micrometers thickness. These barrier

Purohit, A.

1984-06-25T23:59:59.000Z

453

TRC Group - NIST, Physical and Chemical Properties Division  

Science Conference Proceedings (OSTI)

... by subscription through the NIST Standard Reference Data program ... managing numerical values of thermodynamic, thermochemical and ...

454

TRC Group - NIST, Physical and Chemical Properties Division  

Science Conference Proceedings (OSTI)

... Electronic Data Products. NIST TRC data products available through the NIST Standard Reference Data program: (SRD). ...

455

Physical and mechanical properties of mixed comrind and hardwood  

E-Print Network (OSTI)

Forestry Univ., Harbin, China (guangpingh@hotmail.com); Professor, School of Renewable Natural Resources Institute of Wood Industry, Chinese Academy of Forestry, Beijing, China (duanchitosan

456

Microsoft PowerPoint - Computational Studies of Physical Properties...  

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

based on DFT (VASP) Born-Oppenheimer approximation Harmonic model for vibrational free energy Quasi-harmonic approximation for first order anharmonicity Berry phase...

457

Introduction This project studies the physical properties of the  

E-Print Network (OSTI)

: Applications Accidental explosions in industry and transportation, e.g.: methane and coal dust explosions in mines grain and fermentation gases in food processing dust and solvent vapour in paint manufacturing

Barthelat, Francois

458

Control of physical properties on solid surface via laser processing  

Science Conference Proceedings (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

459

Design of ESR Slags According to Requested Physical Properties  

Science Conference Proceedings (OSTI)

Evolution of ESR Technology and Equipment for Long Hollow Ingots Manufacture ... Phosphorus Partitioning During EAF Refining of DRI Based Steel.

460

Hanford Waste Physical and Rheological Properties: Data and Gaps  

SciTech Connect

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

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


461

PHYSICAL 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

462

Optical and Physical Properties from Primary On-Road Vehicle...  

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

Anthony W., Thomas W. Kirchstetter, Anna G. Hallar, George Ban-Weiss, John P. McLaughlin, Robert A. Harley, and Melissa M. Lunden Secondary Title Journal of Aerosol Science...

463

Physical and Electrochemical Properties of Ionic Liquids for Na ...  

Science Conference Proceedings (OSTI)

Development of Hybrid Supercapacitors for Portable Power Applications ... Planar Sodium Metal Halide Battery for Renewable Integration and Grid Applications.

464

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.

465

Window Properties  

NLE Websites -- All DOE Office Websites (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.

466

Flavor physics and CP violation  

E-Print Network (OSTI)

Lectures on flavor physics presented at the 2012 CERN HEP Summer School. Content: 1) flavor physics within the Standard Model, 2) phenomenology of B and D decays, 3) flavor physics beyond the Standard Model.

Gino Isidori

2013-02-04T23:59:59.000Z

467

Miscellaneous Properties  

Science Conference Proceedings (OSTI)

Table 24   Room temperature values of miscellaneous properties of beryllium...10 -6 (diamagnetic) Photoelectric work function, eV 3.92 Electron work function (polycrystal), eV 4.98 (depends on surface cleanliness) Ionization potential for neutral atom, eV 9.3227 Electron-binding energy for 1s (K) level, eV 111.5 Source: Ref 1 , 4 , 11 , 32...

468

THE RISE AND FALL OF PASSIVE DISK GALAXIES: MORPHOLOGICAL EVOLUTION ALONG THE RED SEQUENCE REVEALED BY COSMOS  

Science Conference Proceedings (OSTI)

The increasing abundance of passive 'red-sequence' galaxies since z {approx} 1-2 is mirrored by a coincident rise in the number of galaxies with spheroidal morphologies. In this paper, however, we show in detail, that, the correspondence between galaxy morphology and color is not perfect, providing insight into the physical origin of this evolution. Using the COSMOS survey, we study a significant population of red-sequence galaxies with disk-like morphologies. These passive disks typically have Sa-Sb morphological types with large bulges, but they are not confined to dense environments. They represent nearly one-half of all red-sequence galaxies and dominate at lower masses ({approx}passive disks with M {sub *} {approx}passive disk population has declined since z {approx} 1, likely because they transform into spheroidals. Based on these trends, we estimate that as much as 60% of galaxies transitioning onto the red sequence evolve through a passive disk phase. The origin of passive disks therefore has broad implications for our understanding of how star formation shuts down. Because passive disks tend to be more bulge-dominated than their star-forming counterparts, a simple fading of blue disks does not fully explain their origin. We explore the strengths and weaknesses of several more sophisticated explanations, including environmental effects, internal stabilization, and disk regrowth during gas-rich mergers. While previous work has sought to explain color and morphological transformations with a single process, these observations open the way to new insight by highlighting the fact that galaxy evolution may actually proceed through several separate stages.

Bundy, Kevin; Hopkins, Philip; Ma, Chung-Pei [Astronomy Department, University of California, Berkeley, CA 94705 (United States); Scarlata, Claudia; Capak, Peter [Spitzer Science Center, California Institute of Technology, 314-6, Pasadena, CA 91125 (United States); Carollo, C. M.; Oesch, Pascal [Institute for Astronomy, ETH Zurich, 8092 Zurich (Switzerland); Ellis, Richard S.; Salvato, Mara; Scoville, Nick [Astronomy Department, California Institute of Technology, Pasadena, CA 91125 (United States); Drory, Niv [Max-Planck Institut fur extraterrestrische Physik, Giessenbachstrashe, 85748 Garching (Germany); Leauthaud, Alexie [Physics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Koekemoer, Anton M. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Murray, Norman [Canadian Institute for Theoretical Astrophysics, 60 St George Street, University of Toronto, ON M5S 3H8 (Canada); Ilbert, Olivier [Laboratoire d'Astrophysique de Marseille, BP 8, Traverse du Siphon, 13376 Marseille Cedex 12 (France); Pozzetti, Lucia [Osservatorio Astronomico di Bologna, Via Ranzani, 1, I-40127 Bologna (Italy)

2010-08-20T23:59:59.000Z

469

NIST: Physics Lab - General Interest  

Science Conference Proceedings (OSTI)

... Exhibits from the Physical Measurement Laboratory. in the NIST Virtual Museum. ... NIST's David Wineland shared the 2012 Nobel Prize in Physics. ...

2012-11-05T23:59:59.000Z

470

Topics in Modern Physics Sampler  

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

Topics in Modern Physics Teacher Resource Book Sampler Ed Home - Sampler Index Download the revised Topics in Modern Physics Teacher Resource Book. This volume contains some but...

471

Physics of Sports for Scientists  

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

of Sport for Scientists Materials Dave Harding's Presentation (5.2 Mbytes), The Physics of Sports & Handout for Reaction Time Activity Bran Wijngaarden's Presentation, The Physics...

472

NIST Standard Reference Databases: Physics  

Science Conference Proceedings (OSTI)

... SRD 119 Photoionization of CO2 (ARPES), Online, DG, * Nuclear Physics SRD 144 ... Half-Life Measurements Online, DG, * Physical Constants SRD ...

2012-10-15T23:59:59.000Z

473

Electron Physics Group Staff Page  

Science Conference Proceedings (OSTI)

... Electron Physics Group Staff. ... Jabez McClelland, Group Leader Jabez McClelland is the Group Leader of the CNST Electron Physics Group. ...

2013-07-26T23:59:59.000Z

474

Physics Dept. Seminars and Colloquia  

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

October 15, 2013 Physics Colloquium "Heretical Ideas that led to the Search for the Higgs Boson" Gerald Guralnik, Brown University Thursday, October 10, 2013 Particle Physics...

475

BNL | Physics of the Universe  

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

Core Capabilities Facilities Physics of the Universe image Exploring the Frontiers of Energy, Intensity and the Cosmos Brookhaven leads high-energyparticle physics experiments...

476

The Physics of Language - CECM  

E-Print Network (OSTI)

Dec 24, 2003 ... The Physics of Language. ... Next: Dynamics of Change in Up: The Physics of Language: Previous: Head-last; right brain, head-first;...

477

Online Particle Physics Information - Scope  

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

SLAC Online Particle Physics Information PDG Scope of this Guide While a substantial amount of particle physics information is Internet accessible, most listings do not provide...

478

Online Particle Physics Information - Directories  

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

Institutions HEP and Astrophysics Institutions SPIRES database of over 6,500 high-energy physics and astropartcle physics institutes, laboratories, and university departments...

479

Nuclear & Particle Physics, Astrophysics, Cosmology  

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

reality environment. Nuclear and particle physics, applied physics Animation of new reactor concept for deep space exploration 4:32 Animation of new reactor concept for deep...

480

Perspectives of Nuclear Physics  

E-Print Network (OSTI)

The organizers of this meeting have asked me to present perspectives of nuclear physics. This means to identify the areas where nuclear physics will be expanding in the next future. In six chapters a short overview of these areas will be given, where I expect that nuclear physics willdevelop quite fast: A. Quantum Chromodynamics and effective field theories in the confinement region; B. Nuclear structure at the limits; C. High energy heavy ion collisions; D. Nuclear astrophysics; E. Neutrino physics; F. Test of physics beyond the standard model by rare processes. After a survey over these six points I will pick out a few topics where I will go more in details. There is no time to give for all six points detailed examples. I shall discuss the following examples of the six topics mentionned above: 1. The perturbative chiral quark model and the nucleon $\\Sigma$-term, 2. VAMPIR (Variation After Mean field Projection In Realistic model spaces and with realistic forces) as an example of the nuclear structure renais...

Faessler, A

2002-01-01T23:59:59.000Z

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,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Physics of correlated systems  

DOE Green Energy (OSTI)

This report discusses the following topics: negative hydrogen ions doubly-excited state properties; spectra of heavy open-shell atoms; atomic hydrogen in a strong magnetic field. (LSP)

Greene, C.H.

1991-01-01T23:59:59.000Z

482

LANL | Physics | Active Interrogation  

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

Physics Division activities in standoff active-interrogation for detecting Physics Division activities in standoff active-interrogation for detecting terrorist nuclear devices, 2011 Detonation of a terrorist nuclear device in a major city would have severe economic, psychological and cultural consequences. To help prevent the fulfillment of such a threat, Physics Division has been exploring techniques by which highly-enriched uranium could be detected before reaching its intended target. We have focused on the use of high-energy protons and negative-muons because of their ability to probe deeply into structures and shielding that would surround the uranium, and their capability to stimulate radiation signatures indicating 235U. Our experimental studies for standoff active-interrogation are enabled by the 800-MeV proton beam at the Los Alamos Neutron Science Center, which

483

Argonne Physics Division  

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

RBW RBW Robert B. Wiringa (the guy on the right) phone: 630/252-6134 FAX: 630/252-6008 e-mail: wiringa@anl.gov Biographical sketch 1972 B.S., Rensselaer Polytechnic Institute 1974 M.S., University of Illinois at Urbana-Champaign 1978 Ph.D., University of Illinois at Urbana-Champaign 1978-80 Research Associate, Los Alamos Scientific Laboratory 1981-83 Research Associate, Argonne National Laboratory 1983-87 Assistant Physicist, Argonne National Laboratory 1987-99 Physicist, Argonne National Laboratory 2000- Senior Physicist, Argonne National Laboratory Visiting appointments 1993 Visiting Associate & Lecturer, California Institute of Technology Honors, Organizations, Committees, etc. 1994-2001 Chief, Theory Group, Physics Division, Argonne National Laboratory 1997-2000 Webmaster, Division of Nuclear Physics, American Physical

484

Outlook on Neutrino Physics  

E-Print Network (OSTI)

Some of the hot topics in neutrino physics are discussed, with particular emphasis on neutrino oscillations. After proposing credibility criteria for assessing various claimed effects, particular stress is laid on the solar neutrino deficit, which seems unlikely to have an astrophysical explanation. Comments are also made on the possibility of atmospheric neutrino oscillations and on the LSND experiment, as well as cosmological aspects of neutrinos and neutralinos. Several of the central issues in neutrino physics may be resolved by the new generation of experiments now underway, such as CHORUS, NOMAD and Superkamiokande, and in preparation, such as SNO and a new round of accelerator- and reactor-based neutrino-oscillation experiments. At the end, there is a brief review of ways in which present and future CERN experiments may be able to contribute to answering outstanding questions in neutrino physics.

John Ellis

1996-11-29T23:59:59.000Z

485

Statistical Physics of Citations  

SciTech Connect

This talk will begin with basic empirical facts about the network of scientific citations, based on the entire corpus of Physical Review publications from the past 110 years. Intriguingly, the evolution of citations appears to be described by linear preferential attachment. A master equation approach will be developed to characterize this popularity-driven network. One basic attribute is the citation distribution of the network, namely, the probability that a publication has a given number of citations. The conditions that give rise to exponential, power-law, or more singular citation distributions will be elucidated. Comparison between the theory and the citation data of Physical Review will be made. Finally, the Google page-rank algorithm will be used to uncover hidden gems within Physical Review publications.

Redner, Sidney (Boston University)

2005-09-28T23:59:59.000Z

486

Quantum physics meets biology  

E-Print Network (OSTI)

Quantum physics and biology have long been regarded as unrelated disciplines, describing nature at the inanimate microlevel on the one hand and living species on the other hand. Over the last decades the life sciences have succeeded in providing ever more and refined explanations of macroscopic phenomena that were based on an improved understanding of molecular structures and mechanisms. Simultaneously, quantum physics, originally rooted in a world view of quantum coherences, entanglement and other non-classical effects, has been heading towards systems of increasing complexity. The present perspective article shall serve as a pedestrian guide to the growing interconnections between the two fields. We recapitulate the generic and sometimes unintuitive characteristics of quantum physics and point to a number of applications in the life sciences. We discuss our criteria for a future quantum biology, its current status, recent experimental progress and also the restrictions that nature imposes on bold extrapolations of quantum theory to macroscopic phenomena.

Markus Arndt; Thomas Juffmann; Vlatko Vedral

2009-11-01T23:59:59.000Z

487

Physics 5556 Solid State Physics, Part II Syllabus Spring 2002  

E-Print Network (OSTI)

Physics 5556­ Solid State Physics, Part II Syllabus ­ Spring 2002 Instructor: Massimiliano Di subjects. The following sources are the most used: · Ashcroft and Mermin, "Solid State Physics" · Ziman, "Thermal Physics" · Madelung, "Introduction to Solid-State Theory" · Bassani and Pastori Parravicini

Di Ventra, Massimiliano

488

Physics 5555 Solid State Physics, Part I Syllabus Fall 2003  

E-Print Network (OSTI)

Physics 5555­ Solid State Physics, Part I Syllabus ­ Fall 2003 Instructor: Massimiliano Di Ventra. The following sources are the most used: · Ashcroft and Mermin, "Solid State Physics" · Ziman, "Principles" · Harrison, "Solid State Theory" · Kittel, "Quantum Theory of Solids" · Kittel and Kroemer, "Thermal Physics

Di Ventra, Massimiliano

489

Physics 5555 Solid State Physics, Part I Syllabus Fall 2001  

E-Print Network (OSTI)

Physics 5555­ Solid State Physics, Part I Syllabus ­ Fall 2001 Instructor: Massimiliano Di Ventra. The following sources are the most used: · Ashcroft and Mermin, "Solid State Physics" · Ziman, "Principles" · Harrison, "Solid State Theory" · Kittel, "Quantum Theory of Solids" · Kittel and Kroemer, "Thermal Physics

Di Ventra, Massimiliano

490

PHYSICS 9005B: MATHEMATICAL METHODS OF PHYSICS JANUARY 2012  

E-Print Network (OSTI)

PHYSICS 9005B: MATHEMATICAL METHODS OF PHYSICS JANUARY 2012 Instructor: S. R. Valluri, P&A 112, 661 background and interest in Mathematics are encouraged to take this course Course Website: http://publish.uwo.ca/~valluri/physics major topics relevant for physics and engineering will be covered. Complex Variables: Analytic

Lennard, William N.

491

Engineering Physics: Challenge Yourself! Presented by  

E-Print Network (OSTI)

Physics One of: Physics of Nuclear Reactors Fluid Mechanics Laser Optics Advanced Mechanics Surface Physics Laboratory Electromagnetic Theory Introduction to Quantum Mechanics Quantum Physics of Atoms Advanced Laboratory and Design Project Engineering Physics Thesis One of: Solid State Physics Nuclear

Graham, Nick

492

American Physical Society  

E-Print Network (OSTI)

Founded in 1899, the American Physical Society (APS) is the largest organization of professional physicists in the United States. Its 46,000 members are drawn from universities, industry and national laboratories. The APS is one of the premier publishers of international physics research, maintaining print and on-line publications, as well as electronically searchable archives dating back to 1893. For more than forty years, APS has also devoted resources and expertise to a number of public policy areas, including education, energy, innovation and competitiveness, national

Cherry Murray; Curtis Callan; Leo Kadanoff; Judy Franz; Executive Officer; Joseph Serene; Gene Sprouse; How America; Can Look

2010-01-01T23:59:59.000Z

493

Property Relations  

Science Conference Proceedings (OSTI)

Table 1   Critical properties and van der Waals constants, SI units...(O 2 ) 154.4 50.5 0.0741 0.290 1.369 0.0315 Propane (C 3 H 8 ) 370 42.7 0.195 0.276 9.315 0.0900 Sulfur dioxide (SO 2 ) 431 78.7 0.124 0.268 6.837 0.0568 Water (H 2 O) 647.3 220.9 0.0558 0.230 5.507 0.0304...

494

Few-body problem and pion-nuclear physics. [Review  

SciTech Connect

Some of the pion-nuclear physics questions that pertain to pion-few-nucleon systems are explored. Those aspects of the problem which have relevance to the general study of pion-nuclear physics are emphasized, in particular the properties of the ..pi..-N interaction within a nucleus. Specific examples are restricted to elastic scattering from /sup 2/H, /sup 3/He, and /sup 4/He and selected single and double charge-exchange reactions.

Gibson, B.F.

1976-01-01T23:59:59.000Z

495

Linear Solar Models: a simple tool to investigate the properties of solar interior  

E-Print Network (OSTI)

We describe a simple method to study the dependence of the solar properties on a generic (small) modification the physical inputs adopted in standard solar models calculations.

Villante, F L

2010-01-01T23:59:59.000Z

496

Chemical and Physical Signatures for Microbial Forensics  

SciTech Connect

Chemical and physical signatures for microbial forensics John Cliff and Helen Kreuzer-Martin, eds. Humana Press Chapter 1. Introduction: Review of history and statement of need. Randy Murch, Virginia Tech Chapter 2. The Microbe: Structure, morphology, and physiology of the microbe as they relate to potential signatures of growth conditions. Joany Jackman, Johns Hopkins University Chapter 3. Science for Forensics: Special considerations for the forensic arena - quality control, sample integrity, etc. Mark Wilson (retired FBI): Western Carolina University Chapter 4. Physical signatures: Light and electron microscopy, atomic force microscopy, gravimetry etc. Joseph Michael, Sandia National Laboratory Chapter 5. Lipids: FAME, PLFA, steroids, LPS, etc. James Robertson, Federal Bureau of Investigation Chapter 6. Carbohydrates: Cell wall components, cytoplasm components, methods Alvin Fox, University of South Carolina School of Medicine David Wunschel, Pacific Northwest National Laboratory Chapter 7. Peptides: Peptides, proteins, lipoproteins David Wunschel, Pacific Northwest National Laboratory Chapter 8. Elemental content: CNOHPS (treated in passing), metals, prospective cell types John Cliff, International Atomic Energy Agency Chapter 9. Isotopic signatures: Stable isotopes C,N,H,O,S, 14C dating, potential for heavy elements. Helen Kreuzer-Martin, Pacific Northwest National Laboratory Michaele Kashgarian, Lawrence Livermore National Laboratory Chapter 10. Extracellular signatures: Cellular debris, heme, agar, headspace, spent media, etc Karen Wahl, Pacific Northwest National Laboratory Chapter 11. Data Reduction and Integrated Microbial Forensics: Statistical concepts, parametric and multivariate statistics, integrating signatures Kristin Jarman, Pacific Northwest National Laboratory

Cliff, John B.; Kreuzer, Helen W.; Ehrhardt, Christopher J.; Wunschel, David S.

2012-01-03T23:59:59.000Z

497

Morphology of Nano and Micro Fiber Structures in Ultrafine Particles Filtration  

Science Conference Proceedings (OSTI)

Selected procedures permitting to prepare homogeneous nanofibre structures of the desired morphology by employing a suitable combination of variables during the electrospinning process are presented. A comparison (at the same pressure drop) was made of filtration capabilities of planar polyurethane nanostructures formed exclusively by nanofibres, space polycarbonate nanostructures having bead spacers, structures formed by a combination of polymethyl methacrylate micro- and nanofibres and polypropylene meltblown microstructures, through which ultrafine particles of ammonium sulphate 20-400 nm in size were filtered. The structures studied were described using a new digital image analysis technique based on black and white images obtained by scanning electron microscopy. More voluminous structures modified with distance microspheres and having a greater thickness and mass per square area of the material, i.e. structures possessing better mechanical properties, demanded so much in nanostructures, enable preparation of filters having approximately the same free volume fraction as flat nanofibre filters but an increased effective fibre surface area, changed pore size morphology and, consequently, a higher filter quality.

Kimmer, Dusan; Vincent, Ivo; Fenyk, Jan; Petras, David [SPUR a.s., T. Bati 299, 764 22 Zlin (Czech Republic); Zatloukal, Martin; Sambaer, Wannes [Centre of Polymer Systems, Polymer Centre, Tomas Bata University in Zlin, nam. T. G. Masaryka 5555, 760 01 Zlin (Czech Republic); Zdimal, Vladimir [Institute of Chemical Process Fundamentals of the AS CR, v.v.i., Rozvojova 135, 165 02 Praha 6 (Czech Republic)

2011-07-15T23:59:59.000Z

498

The Journals Acoustical Physics  

E-Print Network (OSTI)

of Atmospheric and Oceanic Technology Journal of Atmospheric and Solar-Terrestrial Physics Journal of Atmospheric Measurement Science and Technology Monthly Weather Review Natural Hazards Review Natural History Nature Nature Water Resources Research Weather Forecasting More Information For more information, contact: Yvonne

Colorado at Boulder, University of

499

Physics 302 Laboratory Syllabus  

E-Print Network (OSTI)

fundamental measuring instruments b)Compute the value of physical quantities not directly measurable from measurements taken of fundamental quantities. c) Use the PC to construct graphs and perform statistical for some. Write reports and essays Each student must read the Student Handbook and Catalog for specific

Noakes, David R.

500

Quantum Complexity and Fundamental Physics  

Science Conference Proceedings (OSTI)

Quantum Complexity and Fundamental Physics. Scott Aaronson Computer Science and Artificial Intelligence Laboratory ...

2010-10-05T23:59:59.000Z