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


1

ARM - Measurement - Surface condition  

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

condition condition ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Surface condition State of the surface, including vegetation, land use, surface type, roughness, and such; often provided in model output. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments NAV : Navigational Location and Attitude SURFLOG : SGP Surface Conditions Observations by Site Technicians S-TABLE : Stabilized Platform MET : Surface Meteorological Instrumentation

2

Physical conditions on the early Earth  

Science Journals Connector (OSTI)

...for the emergence of life on the early Earth organized by S. Leach, I. W. M. Smith...Cockell Physical conditions on the early Earth Jonathan I Lunine * * ( jlunine@lpl...AZ 85721, USA. The formation of the Earth as a planet was a large stochastic process...

2006-01-01T23:59:59.000Z

3

High latitudes present extreme conditions for the measurement and estimation of airsea and ice fluxes, limiting understanding of related physical processes and  

E-Print Network (OSTI)

High latitudes present extreme conditions for the measurement and estimation of air­sea and ice of the Earth's climate. HigH-LatitudE OcEan and SEa icE SurfacE fLuxES: cHaLLEngES fOr cLimatE rESEarcH by Mark change can manifest itself in astonishing ways. Arctic sea ice extent at the end of the melt season

Renfrew, Ian

4

Physical Market Conditions, Paper Market Activity,  

Gasoline and Diesel Fuel Update (EIA)

12 12 Physical Market Conditions, Paper Market Activity, and the WTI-Brent Spread Bahattin Büyükşahin Thomas K. Lee James T. Moser Michel A. Robe* Abstract We document that, starting in the Fall of 2008, the benchmark West Texas Intermediate (WTI) crude oil has periodically traded at unheard of discounts to the corresponding Brent benchmark. We further document that this discount is not reflected in spreads between Brent and other benchmarks that are directly comparable to WTI. Drawing on extant models linking inventory conditions to the futures term structure, we test empirically several conjectures about how time and quality spreads (prompt vs. first-deferred WTI; prompt Brent vs. WTI)

5

Using Modelica for Physical Modeling of Air-Conditioning Systems  

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

Using Modelica for Physical Modeling of Air-Conditioning Systems Using Modelica for Physical Modeling of Air-Conditioning Systems Speaker(s): Jonas Eborn Date: August 23, 2007 - 12:00pm Location: 90-4133 Seminar Host/Point of Contact: Michael Wetter The Air Conditioning library is a commercial Modelica library for the steady-state and transient simulation of air conditioning systems using both compact micro-channel heat exchangers as well as fin-and-tube type heat exchangers. Currently it is mostly used by automotive OEMs and suppliers that need high-accuracy system level models to evaluate energy efficiency of systems developed under the pressure of reduced design cycle times. The library also has applications in other areas, including aircraft cooling systems and residential air-conditioning. The Air Conditioning library contains published correlations for heat and mass transfer and

6

Conditioning of carbonaceous material prior to physical beneficiation  

DOE Patents (OSTI)

A carbonaceous material such as coal is conditioned by contact with a supercritical fluid prior to physical beneficiation. The solid feed material is contacted with an organic supercritical fluid such as cyclohexane or methanol at temperatures slightly above the critical temperature and pressures of 1 to 4 times the critical pressure. A minor solute fraction is extracted into critical phase and separated from the solid residuum. The residuum is then processed by physical separation such as by froth flotation or specific gravity separation to recover a substantial fraction thereof with reduced ash content. The solute in supercritical phase can be released by pressure reduction and recombined with the low-ash, carbonaceous material.

Warzinski, Robert P. (Venetia, PA); Ruether, John A. (McMurray, PA)

1987-01-01T23:59:59.000Z

7

Effects of abnormal conditions on accuracy of orifice measurement  

SciTech Connect

The orifice meter is a remarkable paradox. Despite its incredible longevity and simple appearance, we`ve only begun to truly understand how its installation affects its performance. Hundreds of thousands of orifice meters are used for custody transfer around the world and every resulting transaction implies a base level of trust in the technology. Over the last 10 to 15 years we`ve learned more about the physics of flow measurement in {open_quotes}ideal{close_quotes} and {open_quotes}non-ideal{close_quotes} flow conditions. In many cases, the laboratory work confirms the experience of industry but there have been a few interesting surprises, too. The intended audience of this paper are users and/or designers of orifice meter facilities who want to know more about the contemporary issues, terminology, and results of research into abnormal metering conditions. Because of its introductory nature, this paper doesn`t attempt to squeeze twenty years if scientific data into five pages, but may lead the measurement aficionado toward specific areas of interest.

Peterson, W.B. [NOVA Gas Transmission Ltd., Calgary (Canada)

1995-12-01T23:59:59.000Z

8

INVESTIGATION OF THE PHYSICAL CONDITIONS CON-TROLLING SPAWNING OF OYSTERS AND THE OCCUR-  

E-Print Network (OSTI)

_- - _- - - - - - - - - - - - - _ Methods and equipment _ Topography _ Physical conditions- - - - - - - - - - - - - _ Temperature _ Tide and current_ - - - - - - - - - - - - - - -- Salinity - ---- - - -- - - -- __ -_ Hydrogen-ion concentratioll that exists between physical conditions and the success or failure of oyster production in inshore waters

9

Requirements for Determining Refrigerant Charge Residential Air Conditioning Measures  

E-Print Network (OSTI)

Requirements for Determining Refrigerant Charge Residential Air Conditioning Measures Improved Refrigerant Charge Purpose Component packages require in some climate zones that split system air refrigerant charge. For the performance method, the proposed design is modeled with less efficiency

10

Methods for improved forewarning of condition changes in monitoring physical processes  

DOE Patents (OSTI)

This invention teaches further improvements in methods for forewarning of critical events via phase-space dissimilarity analysis of data from biomedical equipment, mechanical devices, and other physical processes. One improvement involves objective determination of a forewarning threshold (U.sub.FW), together with a failure-onset threshold (U.sub.FAIL) corresponding to a normalized value of a composite measure (C) of dissimilarity; and providing a visual or audible indication to a human observer of failure forewarning and/or failure onset. Another improvement relates to symbolization of the data according the binary numbers representing the slope between adjacent data points. Another improvement relates to adding measures of dissimilarity based on state-to-state dynamical changes of the system. And still another improvement relates to using a Shannon entropy as the measure of condition change in lieu of a connected or unconnected phase space.

Hively, Lee M.

2013-04-09T23:59:59.000Z

11

On the method of additional conditions in mathematical physics  

Science Journals Connector (OSTI)

The method of additional conditions gives a well characteristic of the finite stresses near the tip of a crack of the Griffth's problem in fracture mechanics, where it is supposed of a finite elastic potential which entails the zero value of the J-integral. ... Keywords: Griffth's problem, Laplace equation, fracture, method of additional conditions, singularity

Igor Neygebauer

2011-04-01T23:59:59.000Z

12

Measurement on physical parameters of raindrop energy  

Science Journals Connector (OSTI)

As a result, how to determine the rainfall energy (e) and intensity (I) of one unit period is the key to measure and calculate the energy. Between these two parameters, I is ... rainfall precipitation and rainfal...

Minghang Guo; Jinshi Jian; Zhun Zhao; Juying Jiao

2013-12-01T23:59:59.000Z

13

Electroweak Physics Measurements at the LHC  

E-Print Network (OSTI)

Although often quoted as a discovery collider, the LHC will also allow for precise measurements. In particular, in the electroweak sector, the determination of the masses of the top quark and the W boson will benefit from high statistics and new methods.

N. Besson

2008-12-02T23:59:59.000Z

14

Classification of heart valve condition using acoustic measurements  

SciTech Connect

Prosthetic heart valves and the many great strides in valve design have been responsible for extending the life spans of many people with serious heart conditions. Even though the prosthetic valves are extremely reliable, they are eventually susceptible to long-term fatigue and structural failure effects expected from mechanical devices operating over long periods of time. The purpose of our work is to classify the condition of in vivo Bjork-Shiley Convexo-Concave (BSCC) heart valves by processing acoustic measurements of heart valve sounds. The structural failures of interest for Bscc valves is called single leg separation (SLS). SLS can occur if the outlet strut cracks and separates from the main structure of the valve. We measure acoustic opening and closing sounds (waveforms) using high sensitivity contact microphones on the patient`s thorax. For our analysis, we focus our processing and classification efforts on the opening sounds because they yield direct information about outlet strut condition with minimal distortion caused by energy radiated from the valve disc.

Clark, G. [Lawrence Livermore National Lab., CA (United States)

1994-11-15T23:59:59.000Z

15

A unified physical boundary condition for massless fields of arbitrary spin  

E-Print Network (OSTI)

Boundary conditions for the Maxwell and Dirac fields at material surfaces are widely-used and physically well-motivated, but do not appear to have been generalised to deal with higher spin fields. A consequence of this is that calculations of, for example, Casimir forces associated with higher spin fields always select some arbitrary mathematical boundary conditions, rather than those which are physically motivated. Here, we use the two-spinor calculus formalism to present a unified treatment of the boundary conditions routinely employed in the treatment of spin-1/2 and spin-1 fields. We then use this unification to obtain a completely new boundary condition that can be applied to massless fields of any spin, including the spin-2 graviton, and its supersymmetric partner the spin-3/2 gravitino. We demonstrate one important consequence of our generalisation, which is that periodic boundary conditions cannot be applied to any physically-confined fermionic field.

Adam Stokes; Robert Bennett

2014-11-04T23:59:59.000Z

16

A unified physical boundary condition for massless fields of arbitrary spin  

E-Print Network (OSTI)

Boundary conditions for the Maxwell and Dirac fields at material surfaces are widely-used and physically well-motivated, but do not appear to have been generalised to deal with higher spin fields. A consequence of this is that calculations of, for example, Casimir forces associated with higher spin fields always select some arbitrary mathematical boundary conditions, rather than those which are physically motivated. Here, we use the two-spinor calculus formalism to present a unified treatment of the boundary conditions routinely employed in the treatment of spin-1/2 and spin-1 fields. We then use this unification to obtain a completely new boundary condition that can be applied to massless fields of any spin, including the spin-2 graviton, and its supersymmetric partner the spin-3/2 gravitino. We demonstrate one important consequence of our generalisation, which is that periodic boundary conditions cannot be applied to any physically-confined fermionic field.

Stokes, Adam

2014-01-01T23:59:59.000Z

17

PHYSICAL PROPERTY MEASUREMENTS OF LABORATORY PREPARED SALTSTONE GROUT  

SciTech Connect

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

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

2014-05-05T23:59:59.000Z

18

Impact of Infiltration and Ventilation on Measured Space Conditioning...  

Energy Savers (EERE)

to provide needed ventilation under drier summer and winter conditions and reduce the air introduced during periods of peak space conditioning. For more information, see the...

19

THE INSTITUTE FOR SOLID STATE PHYSICS 2013 Division of Physics in Extreme Conditions  

E-Print Network (OSTI)

of condensed matters under extreme conditions such as ultra-low temperatures, ultra-high pressures combined dimensional quantum systems and liquid under ultra-low temperatures and high magnetic fields. 2) Low Developmentofhighpressureapparatusandconfirmationofphysicalpropertymeasurementtechniquesunderthe multiextremeconditions PrTi2Al20 PrTi2Al20 2K 200mK 50K 8.7 GPa 1.1K 100 Pr Phase diagram

Katsumoto, Shingo

20

Physics 250 -Measurements of the Fine Structure Constant Derek Kimball January 2000 1  

E-Print Network (OSTI)

Physics 250 - Measurements of the Fine Structure Constant Derek Kimball January 2000 1 #12;Physics 250 - Measurements of the Fine Structure Constant Derek Kimball January 2000 2 #12;Physics 250 - Measurements of the Fine Structure Constant Derek Kimball January 2000 3 #12;Physics 250 - Measurements

Budker, Dmitry

Note: This page contains sample records for the topic "measuring physical conditions" 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

Internal geophysics (Physics of Earth's interior) Jump conditions and dynamic surface tension at permeable  

E-Print Network (OSTI)

Internal geophysics (Physics of Earth's interior) Jump conditions and dynamic surface tension of momentum across the interface, a possibly anisotropic surface tension and terms including an inter- face equals the jump of pressure; and in the presence of surface tension defined as a capillary action due

22

Impact of Infiltration and Ventilation on Measured Space Conditioning...  

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

Hot-humid PERFORMANCE DATA Costs for reducing infiltration and incorporating mechanical ventilation in buildings will vary greatly depending on the condition and...

23

Transmission of the size of units of quantities and verification conditions as applied to measurement systems  

Science Journals Connector (OSTI)

The meaning of transmission of the size of units of quantities and verification conditions applied to measurement systems is considered.

A. A. Danilov

2007-05-01T23:59:59.000Z

24

Quantum cosmological solutions: their dependence on the choice of gauge conditions and physical interpretation  

E-Print Network (OSTI)

In "extended phase space" approach to quantum geometrodynamics numerical solutions to Schrodinger equation corresponding to various choice of gauge conditions are obtained for the simplest isotropic model. The "extended phase space" approach belongs to those appeared in the last decade in which, as a result of fixing a reference frame, the Wheeler - DeWitt static picture of the world is replaced by evolutionary quantum geometrodynamics. Some aspects of this approach were discussed at two previous PIRT meetings. We are interested in the part of the wave function depending on physical degrees of freedom. Three gauge conditions having a clear physical meaning are considered. They are the conformal time gauge, the gauge producing the appearance of Lambda-term in the Einstein equations, and the one covering the two previous cases as asymptotic limits. The interpretation and discussion of the obtained solutions is given.

T. P. Shestakova

2008-01-30T23:59:59.000Z

25

The Measured Energy Impact of Infiltration Under Dynamic Conditions  

E-Print Network (OSTI)

, the heat transfer process is a complicated non-linear process, and neither the temperature nor the air flow rate is constant. Therefore, the validity of the steady-state methodology should be proved for dynamic condition. As a preliminary step, dynamic...

Liu, M.; Claridge, D. E.

26

Experimental verification of a theory of the influence of measurement conditions on temperature measurement accuracy with IR systems  

Science Journals Connector (OSTI)

A theory of the influence of measurement conditions on temperature measurement accuracy with infrared systems has been recently presented. A comparison study of the shortwave (35-?m)...

Chrzanowski, Krzysztof

1996-01-01T23:59:59.000Z

27

Hammer mill operating and biomass physical conditions effects on particle size distribution of solid pulverized biofuels  

Science Journals Connector (OSTI)

Abstract Milling is a required pre-treatment for the use of biomass as a pulverized solid biofuel in some thermochemical technologies such as combustion, gasification and bioethanol production, as well as in densification processes. The particle size plays a key role on these energy conversion technologies. Experimental tests for poplar and corn stover were performed to obtain pulverized material at different physical conditions of the biomass (input particle size and moisture content) and operational parameters (opening sizes of the screen and angular speed of hammers). Fourteen parameters related to size central trends, dispersion and shape of particle size distribution (PSD) were calculated and analyzed by a novel data post-processing methodology, combining Artificial Neural Networks and statistical analysis. Results show that the characteristic size of the product (geometric mean size) is mainly influenced by the classification of the screen with values from five to eight times lower than their openings size. The angular speed of the hammer governs the variability and dispersion of sizes. The higher the angular speed, the lower the dispersion on particle size. Physical conditions of the biomass present a negligible effect on PSD.

Miguel Gil; Inmaculada Arauzo

2014-01-01T23:59:59.000Z

28

E-Print Network 3.0 - atomic physics measurements Sample Search...  

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

Atoms: Illuminating Complex Matters "The Reason and Ways to Know Things Precisely using Cold Atoms" Summary: discoveries in physics arose from measurement of important quantities...

29

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,

30

The physical conditions in IRDC clumps from Herschel HIFI observations of H2O  

E-Print Network (OSTI)

Context. The earliest phases of high-mass star formation are poorly understood. Aims. Our goal is to determine the physical conditions and kinematic structure of massive star-forming cloud clumps. Methods. We analyze H$_2$O 557 GHz line profiles observed with HIFI toward four positions in two infrared-dark cloud clumps . By comparison with ground-based C$^{17}$O, N$_2$H$^+$, CH$_3$OH and NH$_3$ line observations, we constrain the volume density and kinetic temperature of the gas and estimate the column density and abundance of H$_2$O and N$_2$H$^+$. Results. The observed water lines are complex with emission and absorption components. The absorption is red shifted and consistent with a cold envelope, while the emission is interpreted as resulting from protostellar outflows. The gas density in the clumps is $\\sim$ 10$^7$ cm$^{-3}$. The o-H2O outflow column density is 0.3 to 3.0 10$^{14}$ cm$^{-2}$, the o-H2O absorption column density is between 1.5 10$^{14}$ and 2.6 10$^{15}$ cm$^-2$ with cold o-H2O abundances...

Shipman, Russell F; Wyrowski, Friedrich; Herpin, Fabrice; Frieswijk, Wilfred

2014-01-01T23:59:59.000Z

31

Emission line profiles as a probe of physical conditions in planetary nebulae  

E-Print Network (OSTI)

We present an analysis of physical conditions in planetary nebulae (PNe) in terms of collisionally-excited line (CEL) and optical-recombination line (ORL) profiles. We aim to investigate whether line profiles could be used to study the long-standing CEL/ORL abundance-discrepancy problem in nebular astrophysics. Using 1D photoionization models and their assumed velocity fields, we simulate the line profiles of various ionic species. We attempt to use our model to account for the observed CEL and ORL profiles. As a case study we present a detailed study of line profiles of the low-excitation planetary nebula (PN) IC 418. Our results show that the profiles of classical temperature and density diagnostic lines, such as [O III] 4363,5007, [S II] 6716,6731, and [Ar IV] 4711,4740, provide a powerful tool to study nebular temperature and density variations. The method enables the CEL/ORL abundance-discrepancy problem to be studied more rigorously than before. A pure photoionization model of a chemically-homogeneous nebula seems to explain the observed disagreements in the profiles for the [O III] 4363 and the 5007 lines, but cannot account for the differences between the [O III] CELs and the O II ORLs. We also investigate the temperature and density variations in the velocity space of a sample of PNe, which are found to be insignificant.

Yong Zhang

2008-05-15T23:59:59.000Z

32

Precise measurements of electroweak parameters as probes for new physics  

SciTech Connect

This report contains an brief discussion of research on precise electroweak measurements and a list of participants at the conference. (LSP)

Not Available

1991-12-31T23:59:59.000Z

33

Precise measurements of electroweak parameters as probes for new physics  

SciTech Connect

This report contains an brief discussion of research on precise electroweak measurements and a list of participants at the conference. (LSP)

Not Available

1991-01-01T23:59:59.000Z

34

Clinical Reality of Measuring Upper-Limb Ability in Neurologic Conditions: A Systematic Review  

Science Journals Connector (OSTI)

Connell LA, Tyson SF. Clinical reality of measuring upper-limb ability in neurologic conditions: a systematic review. Objective To review the psychometric properties and clinical utility of upper-limb measurement tools in people with neurologic conditions to provide recommendations for practice. Data Sources MEDLINE, CINAHL, EMBASE, PEDro, and AMED. Study Selection Independent reviewers searched, selected, and extracted data from articles that assessed reliability, validity, ability to detect change, and clinical utility of measures of the upper limb in adult neurologic conditions. Data Extraction Measures with good psychometrics and 8 or higher (out of 10) clinical utility scores were recommended. Data Synthesis The searches identified 31 measures of the upper limb. However, only 2 measures fulfilled all of the psychometric and clinical utility criteria; the Box and Block Test and the Action Research Arm Test. Conclusions The Box and Block and the Action Research Arm Tests produce robust data and are feasible for use in clinical practice. Future development of new or existing measures should ensure the construct and content validity of the measure is clearly identified, standardized guidelines are easily available, and ensure that it is individualized and contemporary. Attention to measures of upper-limb activity for people who are unable to grip objects is also needed.

Louise A. Connell; Sarah F. Tyson

2012-01-01T23:59:59.000Z

35

In-situ physical properties measurements using crosswell acoustic data  

SciTech Connect

Crosswell acoustic surveys enable the in-situ measurements of elastic moduli, Poisson's ratio, porosity, and apparent seismic Q of gas-bearing low-permeability formations represented at the Department of Energy Multi-Well Experiment (MWX) site near Rifle, Colorado. These measurements, except for Q, are compared with laboratory measurements on core taken from the same depths at which the crosswell measurements are made. Seismic Q determined in situ is compared to average values for sandstone. Porosity was determined from crosswell data using the empirical relationship between acoustic velocity, porosity, and effective pressure developed by Domenico. Domenico, S.N., ''Rock Lithology and Porosity Determination from Shear and compressional Wave Velocity,'' Geophysics, Vol. 49, No. 9, Aug. 1984, pp. 1188-1195. In-situ porosities are significantly greater than the core-derived values. Sources of the discrepancy may arise from (i) the underestimation of porosity that can result when Boyle's Law measurements are made on low-permeability core and (ii) the application of Dominico's relationship, which is developed for clean sands, to the mixed sandstone and shale lithologies represented at the MWX site. Values for Young's modulus and Poisson's ratio derived from crosswell measurements are comparable to values obtained from core. Apparent seismic Q measured in situ between wells is lower than Q measured on core and clearly shows the heterogeneity of sandstone deposited in a fluvial environment. 16 refs., 4 figs., 2 tabs.

Johnson, P.A.; Albright, J.N.

1985-01-01T23:59:59.000Z

36

Observations of Velocity Conditions near a Hydroelectric Turbine Draft Tube Exit using ADCP Measurements  

SciTech Connect

Measurement of flow characteristics near hydraulic structures is an ongoing challenge because of the need to obtain rapid measurements of time-varying velocity over a relatively large spatial domain. This paper discusses use of an acoustic Doppler current profiler (ADCP) to measure the rapidly diverging flow exiting from an operating hydroelectric turbine draft tube exit. The resolved three-dimensional velocity vectors show a highly complex and helical flow pattern developed near to and downstream of the exit. Velocity vectors were integrated across the exit and we computed an uneven percentage of flow (67%/33%) passing through the two draft tube barrels at a mid-range turbine discharge, consistent with physical model results. In addition to the three-dimensional velocity vectors, the individual one-dimensional velocities measured by each of the four ADCP beams can be separately used as calibration and validation datasets for numerical and physical models. This technique is demonstrated by comparing along-beam ADCP velocity measurements to data collected in a scaled physical model.

Cook, Christopher B.; Richmond, Marshall C.; Serkowski, John A.

2007-10-01T23:59:59.000Z

37

Non-Mandatory Appendix C to 1910.900: Physical Work Activities and Conditions and the Ergonomic Risk Factors that may be Present.  

E-Print Network (OSTI)

Non-Mandatory Appendix C to §1910.900: Physical Work Activities and Conditions and the Ergonomic Risk Factors that may be Present. PHYSICAL WORK ACTIVITIES AND CONDITIONS ERGONOMIC RISK FACTORS ACTIVITIES AND CONDITIONS ERGONOMIC RISK FACTORS THAT MAY BE PRESENT (10) Workstation edges or objects press

Choobineh, Fred

38

Active doublet method for measuring small changes in physical properties  

DOE Patents (OSTI)

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

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

1994-01-01T23:59:59.000Z

39

Effects of surface voids on burning rate measurements of pulverized coal at diffusion-limited conditions  

SciTech Connect

This research explores the effects of voids (pores on the particle surface that are deeper than their surface radius) on burning area at diffusion-limited combustion conditions. Scanning electron microscopy and digital processing of images of quenched particles were used to quantify surface void area, perimeter, and reacting void wall area for voids with diameters larger than 1 {micro}m. After careful analysis, the most accurate determination of particle burning area at diffusion-limited conditions was achieved by measuring particle surface area using the technique of discrete revolution, subtracting surface void area, and adding reacting void wall area. In situ measurements of reacting coal particle temperatures and images were taken for three coals and spherocarb particles at conditions that limit the formation of CO{sub 2} from reacting carbon under various oxygen concentrations and heating rates. The results of these experiments indicate that correcting the measured surface area for void area and reacting void wall area produces calculated burning rates closely matching diffusion-limited burning rates for all conditions and all coals investigated. These results suggest that void area effects should be included for accurate determination of burning area at diffusion-limited conditions.

Bayless, D.J.; Schroeder, A.R.; Peters, J.E.; Buckius, R.O. [Univ. of Illinois, Urbana, IL (United States). Dept. of Mechanical and Industrial Engineering] [Univ. of Illinois, Urbana, IL (United States). Dept. of Mechanical and Industrial Engineering

1997-01-01T23:59:59.000Z

40

Energy density is an important mea-sure of fish nutritional condition and  

E-Print Network (OSTI)

indices, energy density integrates and reflects the history of fish feed- ing environments before the time218 Energy density is an important mea- sure of fish nutritional condition and is used to assess growth, construct energy budgets, and measure energy flow in ecosystems (Brett et al., 1969; Jobling

Note: This page contains sample records for the topic "measuring physical conditions" 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

Physics  

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

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

42

Measurements of Fundamental Fluid Physics of SNF Storage Canisters  

SciTech Connect

With the University of Idaho, Ohio State University and Clarksean Associates, this research program has the long-term goal to develop reliable predictive techniques for the energy, mass and momentum transfer plus chemical reactions in drying / passivation (surface oxidation) operations in the transfer and storage of spent nuclear fuel (SNF) from wet to dry storage. Such techniques are needed to assist in design of future transfer and storage systems, prediction of the performance of existing and proposed systems and safety (re)evaluation of systems as necessary at later dates. Many fuel element geometries and configurations are accommodated in the storage of spent nuclear fuel. Consequently, there is no one generic fuel element / assembly, storage basket or canister and, therefore, no single generic fuel storage configuration. One can, however, identify generic flow phenomena or processes which may be present during drying or passivation in SNF canisters. The objective of the INEEL tasks was to obtain fundamental measurements of these flow processes in appropriate parameter ranges.

Condie, Keith Glenn; Mc Creery, Glenn Ernest; McEligot, Donald Marinus

2001-09-01T23:59:59.000Z

43

Nuclear Data Measurements for 21st Century Reactor Physics Applications  

SciTech Connect

The United States Department of Energy (DOE), Office of Nuclear Energy (NE) has embarked on a long-term program to significantly advance the science and technology of nuclear energy. This is in response to the overall national plan for accelerated development of domestic energy resources on several fronts, punctuated by recent dramatic events that have emphasized the need for the US to reduce its dependence on foreign petroleum supplies. Key aspects of the DOE-NE agenda are embodied in the Generation-IV (Gen-IV) advanced nuclear energy systems development program and in the Advanced Fuel Cycle (AFC) program. The planned efforts involve near-term and intermediate-term improvements in fuel utilization and recycling in current nuclear power reactor systems as well as the longer-term development of new nuclear energy systems that offer much improved fuel utilization and proliferation resistance, along with continued advances in operational safety. The success of the overall NE effort will depend not only on sophisticated system development and engineering, but also on the advances in the supporting sciences and technologies. Of these, one of the most important is the improvement of the relevant fundamental nuclear science data bases, especially the evaluated neutron interaction cross section files that serve as the foundation of all reactor system designs, operating strategies, and fuel cycle engineering activities. The new concepts for reactors and fuel cycles involve the use of transuranic nuclides that were previously of little interest, and where experimentally measured information is lacking. The current state of the cross section database for some of these nuclides is such that design computations for advanced fast-spectrum reactor systems and fuel cycles that incorporate such materials in significant quantities are meaningful only for approximate conceptual applications. No actual system could reliably be designed according to currently accepted standards, nor could such a system be safely and efficiently operated, with the limited nuclear data and related information now available.

Rahmat Aryaeinejad; Jerald D. Cole; Mark W. Drigert; James K. Jewell; Christopher A. McGrath; David W. Nigg; Edward L. Reber

2003-03-01T23:59:59.000Z

44

Note: Electrical resolution during conductive atomic force microscopy measurements under different environmental conditions and contact forces  

SciTech Connect

Conductive atomic force microscopy experiments on gate dielectrics in air, nitrogen, and UHV have been compared to evaluate the impact of the environment on topography and electrical measurements. In current images, an increase of the lateral resolution and a reduction of the conductivity were observed in N{sub 2} and, especially, in UHV (where current depends also on the contact force). Both effects were related to the reduction/elimination of the water layer between the tip and the sample in N{sub 2}/UHV. Therefore, since current measurements are very sensitive to environmental conditions, these factors must be taken into consideration when comparisons between several experiments are performed.

Lanza, M.; Porti, M.; Nafria, M.; Aymerich, X. [Dept. Enginyeria Electronica, Universitat Autonoma de Barcelona, Edifici Q, 08193 Bellaterra (Spain); Whittaker, E.; Hamilton, B. [University of Manchester, Sackville Street, Manchester M60 JQD (United Kingdom)

2010-10-15T23:59:59.000Z

45

PPPL PRINCETON PLASMA PHYSICS LABORATORY TERMS & CONDITIONS FOR COMMERCIAL ITEMS OR SERVICES  

E-Print Network (OSTI)

) "Agreement" means Purchase Order, Subcontract, Price Agreement, Basic Ordering Agreement, or any mod by Princeton for DOE under Prime Contract No. DE-AC02-09CH11466. (f) "Princeton" means the Trustees orders and agreements for commer- cial items or services awarded by Princeton University Plasma Physics

46

Novel approach for particle velocity and size measurement under plasma conditions  

Science Journals Connector (OSTI)

A novel technique is proposed for the simultaneous in?flight measurement of the velocity and size of individual particles under plasma conditions. The method is based on the observation of each particle through its own emission and the analysis in the time domain of the waveform of the light burst generated as it crosses an observation window of known dimensions. A theoretical analysis of the parameters affecting the visibility of the particles in an argon plasma showed that depending on the particle diameter and its surface temperature its thermal visibility factor will drop sharply from 1.0 to almost zero with the increase of the background plasma temperature.Measurements are carried out using nickel particles (d? p =78 ?m ?=18.0 ?m) injected axially into an inductively coupled rf plasma (?f=3 MHz P=15 kW) operated using argon as the plasma gas at atmospheric pressure and under soft vacuum conditions (p=760 and 150 Torr). The results are in good agreement with particle velocity data obtained using laser Doppler anemometry. The measured in?flight particle size distribution is consistent with optical microscopic measurement of the particle size distribution of the injected powder.

Tadahiro Sakuta; Maher I. Boulos

1988-01-01T23:59:59.000Z

47

Condition monitoring of rotating machines using on-shaft vibration measurement  

Science Journals Connector (OSTI)

ABSTRACT Condition monitoring of rotating machines enables early detection of faults and avoidance of unexpected machinery breakdowns. Vibration-based condition monitoring (VCM) is a well-known and well-accepted method for the health monitoring of rotating machines in industries. However the conventional VCM possesses some limitations in terms of using a number of vibration sensors at each bearing pedestal and sufficient experience to interpret the measured vibration data to identify fault(s), if any, present in the machine. Hence the on-shaft vibration (OSV) measurement has been proposed in this study using a tiny Micro Electro Mechanical Systems (MEMS) accelerometer with a wireless node for the data transmission to the computer. This approach is expected to reduce the number of sensors used currently and may also contain enriched vibration information about the shaft which may ease the fault diagnosis process. The proposed OSV measurement approach is applied to a small experimental rig and then experiments were conducted with a few simulated faults in the rig. Initial observations indicate that the OSV measurement gives better classification of different machine states compared to the on-bearing one. The experimental results are discussed in the paper.

M.E. Elnady; J.K. Sinha; S.O. Oyadiji

2012-01-01T23:59:59.000Z

48

Measurement  

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

localization that limits the present measurements. The knowledge thus gained will have input not only to fusion research, but to may ques- tions of basic plasma physics....

49

Measurement  

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

in the Department of Physics & Astronomy. Chapel Hill 2005 Approved: A. E. Champagne, Advisor J. C. Blackmon, Reader C. Iliadis, Reader ABSTRACT Ryan P. Fitzgerald: Measurement of...

50

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

E-Print Network (OSTI)

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

Wang, Zhong L.

51

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

52

Physics  

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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.

53

(1) A Handbook of Physics Measurements (2) Notes on Magnetism: For the Use of Students of Electrical Engineering  

Science Journals Connector (OSTI)

... (1) IN the two volumes forming A Handbook of ... of Physics Measurements are given the theory and manipulation of those experiments which experience has shown ...

H. S. A.

1920-04-15T23:59:59.000Z

54

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.

55

Direct ion flux measurements at high-pressure-depletion conditions for microcrystalline silicon deposition  

SciTech Connect

The contribution of ions to the growth of microcrystalline silicon thin films has been investigated in the well-known high-pressure-depletion (HPD) regime by coupling thin-film analysis with plasma studies. The ion flux, measured by means of a capacitive probe, has been studied in two regimes, i.e., the amorphous-to-microcrystalline transition regime and a low-to-high power regime; the latter regime had been investigated to evaluate the impact of the plasma power on the ion flux in collisional plasmas. The ion flux was found not to change considerably under the conditions where the deposited material undergoes a transition from the amorphous to the microcrystalline silicon phase; for solar-grade material, an ion-to-Si deposition flux of ?0.30 has been determined. As an upper-estimation of the ion energy, a mean ion energy of ?19 eV has been measured under low-pressure conditions (<1 mbar) by means of a retarding field energy analyzer. Combining this upper-estimate with an ion per deposited Si atom ratio of ?0.30, it is concluded that less than 6 eV is available per deposited Si atom. The addition of a small amount of SiH{sub 4} to an H{sub 2} plasma resulted in an increase of the ion flux by about 30% for higher power values, whereas the electron density, deduced from optical emission spectroscopy analysis, decreased. The electron temperature, also deduced from optical emission spectroscopy analysis, reveals a slight decrease with power. Although the dominant ion in the HPD regime is SiH{sub 3}{sup +}, i.e., a change from H{sub 3}{sup +} in pure hydrogen HPD conditions, the measured larger ion loss can be explained by assuming steeper electron density profiles. These results, therefore, confirm the results reported so far: the ion-to-Si deposition flux is relatively large but has neither influence on the microcrystalline silicon film properties nor on the phase transition. Possible explanations are the reported high atomic hydrogen to deposition flux ratio, mitigating the detrimental effects of an excessive ion flux.

Bronneberg, A. C.; Kang, X.; Palmans, J.; Janssen, P. H. J.; Lorne, T. [Applied Physics Department, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven (Netherlands)] [Applied Physics Department, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven (Netherlands); Creatore, M. [Applied Physics Department, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven (Netherlands) [Applied Physics Department, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven (Netherlands); Solliance Solar Research, High Tech Campus 5, 5656AE Eindhoven (Netherlands); Sanden, M. C. M. van de [Applied Physics Department, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven (Netherlands); Dutch Institute for Fundamental Energy Research (DIFFER), P.O. Box 1207, 3430BE Nieuwegein (Netherlands)

2013-08-14T23:59:59.000Z

56

Experimental and modeling results for reconsolidation of crushed natural rock salt under varying physical conditions  

SciTech Connect

Mined salt from the underground facility at the Waste Isolation Pilot Plant (WIPP) Project is a candidate material for use as backfill around the waste packages and in the underground openings during and after the operational phase. We have conducted a series of hydrostatic and triaxial compression experiments on the time-dependent compaction behavior of crushed salt under nominally dry, damp,'' (0.5-3 wt % added water), and brine-saturated conditions. Though the compaction of dry crushed salt is very show in the laboratory, damp salt is likely to compact as rapidly as the mine walls can converge. Drained tests on brine-saturated crushed salt indicate that, though effects associated with saturation do retard consolidation rates slightly, high fractional densities ({ge} 0.95) can still be obtained on laboratory time scales at pressures below lithostatic at the WIPP. Triaxial compression experiments indicate that small deviatoric stresses have little impact on consolidation rates. Micromechanical models for the compaction of dry and damp crushed salt, based on isostatic hot-pressing models, are discussed.

Zeuch, D.H.; Holcomb, D.J.

1991-11-01T23:59:59.000Z

57

Experimental and modeling results for reconsolidation of crushed natural rock salt under varying physical conditions  

SciTech Connect

Mined salt from the underground facility at the Waste Isolation Pilot Plant (WIPP) Project is a candidate material for use as backfill around the waste packages and in the underground openings during and after the operational phase. We have conducted a series of hydrostatic and triaxial compression experiments on the time-dependent compaction behavior of crushed salt under nominally dry, ``damp,`` (0.5-3 wt % added water), and brine-saturated conditions. Though the compaction of dry crushed salt is very show in the laboratory, damp salt is likely to compact as rapidly as the mine walls can converge. Drained tests on brine-saturated crushed salt indicate that, though effects associated with saturation do retard consolidation rates slightly, high fractional densities ({ge} 0.95) can still be obtained on laboratory time scales at pressures below lithostatic at the WIPP. Triaxial compression experiments indicate that small deviatoric stresses have little impact on consolidation rates. Micromechanical models for the compaction of dry and damp crushed salt, based on isostatic hot-pressing models, are discussed.

Zeuch, D.H.; Holcomb, D.J.

1991-11-01T23:59:59.000Z

58

Reservoir condition special core analyses and relative permeability measurements on Almond formation and Fontainebleu sandstone rocks  

SciTech Connect

This report describes the results from special core analyses and relative permeability measurements conducted on Almond formation and Fontainebleu sandstone plugs. Almond formation plug tests were performed to evaluate multiphase, steady-state,reservoir-condition relative permeability measurement techniques and to examine the effect of temperature on relative permeability characteristics. Some conclusions from this project are as follows: An increase in temperature appeared to cause an increase in brine relative permeability results for an Almond formation plug compared to room temperature results. The plug was tested using steady-state oil/brine methods. The oil was a low-viscosity, isoparaffinic refined oil. Fontainebleu sandstone rock and fluid flow characteristics were measured and are reported. Most of the relative permeability versus saturation results could be represented by one of two trends -- either a k{sub rx} versus S{sub x} or k{sub rx} versus Sy trend where x and y are fluid phases (gas, oil, or brine). An oil/surfactant-brine steady-state relative permeability test was performed to examine changes in oil/brine relative permeability characteristics from changes in fluid IFTS. It appeared that, while low interfacial tension increased the aqueous phase relative permeability, it had no effect on the oil relative permeability. The BOAST simulator was modified for coreflood simulation. The simulator was useful for examining effects of variations in relative permeability and capillary pressure functions. Coreflood production monitoring and separator interface level measurement techniques were developed using X-ray absorption, weight methods, and RF admittance technologies. The three types of separators should be useful for routine and specialized core analysis applications.

Maloney, D.

1993-11-01T23:59:59.000Z

59

Measurements of enhanced electron screening in d+d reactions under UHV conditions  

Science Journals Connector (OSTI)

Observation of the enhanced electron screening in metallic environments is of fundamental importance for the understanding of strongly coupled astrophysical plasmas. Experimental screening energies determined by different groups for many metals are much larger than the theoretical predictions. However, a comparison between experimental and theoretical data is rather ambiguous because of the contributions of systematic errors in the experiments. One of the most important problems is the uncertainty resulting from the oxidation of the target surface during the measurements. Here, we present results of the first ultra-high vacuum (UHV) experiments studying d+d nuclear reactions in a deuterized Zr target for which the experimental discrepancies are especially large. The total cross sections and angular distributions of the 2H(d,p)3H and 2H(d,n)3He reactions have been measured using a deuteron beam of energies between 8 and 30 keV provided by an electron cyclotron resonance ion source with excellent long-term stability. The cleanness of the target surface has been assured by combining Ar sputtering of the target and Auger spectroscopy. In an on-line analysis method, the homogeneity of the implanted deuteron densities could be monitored also. The resulting screening energy for Zr confirms the large value obtained in a previous experiment under poorer vacuum conditions.

K Czerski; A Huke; L Martin; N Targosz; D Blauth; A Grska; P Heide; H Winter

2008-01-01T23:59:59.000Z

60

Physics and Analysis at a Hadron Collider - Making Measurements (3/3)  

ScienceCinema (OSTI)

This is the third lecture of three which together discuss the physics of hadron colliders with an emphasis on experimental techniques used for data analysis. This third lecture discusses techniques important for analyses making a measurement (e.g. determining a cross section or a particle property such as its mass or lifetime) using some CDF top-quark analyses as specific examples. The lectures are aimed at graduate students.

None

2011-10-06T23:59:59.000Z

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


61

Physical sampling for site and waste characterization  

SciTech Connect

Physical sampling plays a basic role in site and waste characterization program effort. The term ``physical sampling`` used here means collecting tangible, physical samples of soil, water, air, waste streams, or other materials. The industry defines the term ``physical sampling`` broadly to include measurements of physical conditions such as temperature, wind conditions, and pH which are also often taken in a sample collection effort. Most environmental compliance actions are supported by the results of taking, recording, and analyzing physical samples and the measuring of physical conditions taken in association with sample collecting.

Bonnough, T.L.

1994-06-01T23:59:59.000Z

62

An investigation into the predictive performance of pavement marking retroreflectivity measured under various conditions of continuous wetting  

E-Print Network (OSTI)

This thesis research investigated the predictive performance of pavement marking retroreflectivity measured under various conditions of continuous wetting. The researcher compared nighttime detection distance of pavement markings in simulated rain...

Pike, Adam Matthew

2007-04-25T23:59:59.000Z

63

MID-INFRARED POLYCYCLIC AROMATIC HYDROCARBON AND H{sub 2} EMISSION AS A PROBE OF PHYSICAL CONDITIONS IN EXTREME PHOTODISSOCIATION REGIONS  

SciTech Connect

Mid-infrared (mid-IR) observations of polycyclic aromatic hydrocarbons (PAHs) and molecular hydrogen emission are a potentially powerful tool to derive physical properties of dense environments irradiated by intense UV fields. We present new, spatially resolved, Spitzer mid-IR spectroscopy of the high UV field and dense photodissociation region (PDR) around Monoceros R2, the closest ultracompact H II region, revealing the spatial structure of ionized gas, PAHs, and H{sub 2} emissions. Using a PDR model and PAH emission feature fitting algorithm, we build a comprehensive picture of the physical conditions prevailing in the region. We show that the combination of the measurement of PAH ionization fraction and of the ratio between the H{sub 2} 0-0 S(3) and S(2) line intensities, respectively, at 9.7 and 12.3 mum, allows us to derive the fundamental parameters driving the PDR: temperature, density, and UV radiation field when they fall in the ranges T = 250-1500 K, n {sub H} = 10{sup 4}-10{sup 6} cm{sup -3}, and G {sub 0} = 10{sup 3}-10{sup 5}, respectively. These mid-IR spectral tracers thus provide a tool to probe the similar but unresolved UV-illuminated surface of protoplanetary disks or the nuclei of starburst galaxies.

Berne, O.; Goicoechea, J. R. [Centro de AstrobiologIa (CSIC/INTA), Laboratiorio de Astrofisica Molecular, Ctra. de Torrejon a Ajalvir, km 4 28850, Torrejon de Ardoz, Madrid (Spain); Fuente, A. [Observatorio Astronomico Nacional, Apdo. Correos 112, 28803 Alcala de Henares, Madrid (Spain); Pilleri, P.; Joblin, C. [Universite de Toulouse, UPS, CESR, 9 ave colonel Roche, F-31028 Toulouse cedex 9 (France); Gonzalez-GarcIa, M. [LUTH, Observatoire de Paris and Universite Paris, 7 place Jansen, 92190 Meudon (France)

2009-11-20T23:59:59.000Z

64

Physics  

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

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

65

X-ray reflectivity measurements of liquid/solid interfaces under high hydrostatic pressure conditions  

Science Journals Connector (OSTI)

A high hydrostatic pressure cell for X-ray reflectivity measurements at the solid/liquid interface is presented.

Wirkert, F.J.

2013-11-02T23:59:59.000Z

66

A hybrid measure-correlate-predict method for long-term wind condition assessment  

Science Journals Connector (OSTI)

Abstract This paper develops a hybrid measure-correlate-predict (MCP) strategy to assess long-term wind resource variations at a farm site. The hybrid MCP method uses recorded data from multiple reference stations to estimate long-term wind conditions at a target wind plant site with greater accuracy than is possible with data from a single reference station. The weight of each reference station in the hybrid strategy is determined by the (i) distance and (ii) elevation differences between the target farm site and each reference station. In this case, the wind data is divided into sectors according to the wind direction, and the MCP strategy is implemented for each wind direction sector separately. The applicability of the proposed hybrid strategy is investigated using five MCP methods: (i) the linear regression; (ii) the variance ratio; (iii) the Weibull scale; (iv) the artificial neural networks; and (v) the support vector regression. To implement the hybrid MCP methodology, we use hourly averaged wind data recorded at five stations in the state of Minnesota between 07-01-1996 and 06-30-2004. Three sets of performance metrics are used to evaluate the hybrid MCP method. The first set of metrics analyze the statistical performance, including the mean wind speed, wind speed variance, root mean square error, and mean absolute error. The second set of metrics evaluate the distribution of long-term wind speed; to this end, the Weibull distribution and the Multivariate and Multimodal Wind Distribution models are adopted. The third set of metrics analyze the energy production of a wind farm. The best hybrid MCP strategy from 256 different combinations of MCP algorithms and reference stations is investigated and selected. The results illustrate that the many-to-one correlation in such a hybrid approach can provide a more reliable prediction of long-term on-site wind variations than that provided by the one-to-one correlations. The accuracy of the hybrid MCP method is found to be highly sensitive to the combination of individual MCP algorithms and reference stations used. It is also observed that the best combination of MCP algorithms is influenced by the length of the concurrent short-term correlation period.

Jie Zhang; Souma Chowdhury; Achille Messac; Bri-Mathias Hodge

2014-01-01T23:59:59.000Z

67

MICE: the Muon Ionization Cooling Experiment. Step I: First Measurement of Emittance with Particle Physics Detectors  

E-Print Network (OSTI)

The Muon Ionization Cooling Experiment (MICE) is a strategic R&D project intended to demonstrate the only practical solution to providing high brilliance beams necessary for a neutrino factory or muon collider. MICE is under development at the Rutherford Appleton Laboratory (RAL) in the United Kingdom. It comprises a dedicated beamline to generate a range of input muon emittances and momenta, with time-of-flight and Cherenkov detectors to ensure a pure muon beam. The emittance of the incoming beam will be measured in the upstream magnetic spectrometer with a scintillating fiber tracker. A cooling cell will then follow, alternating energy loss in Liquid Hydrogen (LH2) absorbers to RF cavity acceleration. A second spectrometer, identical to the first, and a second muon identification system will measure the outgoing emittance. In the 2010 run at RAL the muon beamline and most detectors were fully commissioned and a first measurement of the emittance of the muon beam with particle physics (time-of-flight) detectors was performed. The analysis of these data was recently completed and is discussed in this paper. Future steps for MICE, where beam emittance and emittance reduction (cooling) are to be measured with greater accuracy, are also presented.

U. Bravar; M. Bogomilov; Y. Karadzhov; D. Kolev; I. Russinov; R. Tsenov; L. Wang; F. Y. Xu; S. X. Zheng; R. Bertoni; M. Bonesini; R. Mazza; V. Palladino; G. Cecchet; A. de Bari; M. Capponi; A. Iaciofano; D. Orestano; F. Pastore; L. Tortora; S. Ishimoto; S. Suzuki; K. Yoshimura; Y. Mori; Y. Kuno; H. Sakamoto; A. Sato; T. Yano; M. Yoshida; F. Filthaut; M. Vretenar; S. Ramberger; A. Blondel; F. Cadoux; F. Masciocchi; J. S. Graulich; V. Verguilov; H. Wisting; C. Petitjean; R. Seviour; M. Ellis; P. Kyberd; M. Littlefield; J. J. Nebrensky; D. Forrest; F. J. P. Soler; K. Walaron; P. Cooke; R. Gamet; A. Alecou; M. Apollonio; G. Barber; A. Dobbs; P. Dornan; A. Fish; R. Hare; A. Jamdagni; V. Kasey; M. Khaleeq; K. Long; J. Pasternak; H. Sakamoto; T. Sashalmi; V. Blackmore; J. Cobb; W. Lau; M. Rayner; C. D. Tunnell; H. Witte; S. Yang; J. Alexander; G. Charnley; S. Griffiths; B. Martlew; A. Moss; I. Mullacrane; A. Oats; S. York; R. Apsimon; R. J. Alexander; P. Barclay; D. E. Baynham; T. W. Bradshaw; M. Courthold; R. Edgecock T. Hayler; M. Hills; T. Jones; N. McCubbin; W. J. Murray; C. Nelson; A. Nicholls; P. R. Norton; C. Prior; J. H. Rochford; C. Rogers; W. Spensley; K. Tilley; C. N. Booth; P. Hodgson; R. Nicholson; E. Overton; M. Robinson; P. Smith; D. Adey; J. Back; S. Boyd; P. Harrison; J. Norem; A. D. Bross; S. Geer; A. Moretti; D. Neuffer; M. Popovic; Z. Qian; R. Raja; R. Stefanski; M. A. C. Cummings; T. J. Roberts; A. DeMello; M. A. Green; D. Li; A. M. Sessler; S. Virostek; M. S. Zisman; B. Freemire; P. Hanlet; D. Huang; G. Kafka; D. M. Kaplan; P. Snopok; Y. Torun; Y. Onel; D. Cline; K. Lee; Y. Fukui; X. Yang; R. A. Rimmer; L. M. Cremaldi; T. L. Hart; D. J. Summers; L. Coney; R. Fletcher; G. G. Hanson; C. Heidt; J. Gallardo; S. Kahn; H. Kirk; R. B. Palmer

2011-10-09T23:59:59.000Z

68

Measuring linac photon beam energy through EPID image analysis of physically wedged fields  

SciTech Connect

Purpose: Electronic portal imaging devices (EPIDs) have proven to be useful tools for measuring several parameters of interest in linac quality assurance (QA). However, a method for measuring linac photon beam energy using EPIDs has not previously been reported. In this report, such a method is devised and tested, based on fitting a second order polynomial to the profiles of physically wedged beams, where the metric of interest is the second order coefficient?. The relationship between ? and the beam quality index [percentage depth dose at 10 cm depth (PDD{sub 10})] is examined to produce a suitable calibration curve between these two parameters. Methods: Measurements were taken in a water-tank for beams with a range of energies representative of the local QA tolerances about the nominal value 6 MV. In each case, the beam quality was found in terms of PDD{sub 10} for 100 100 mm{sup 2} square fields. EPID images of 200 200 mm{sup 2} wedged fields were then taken for each beam and the wedge profile was fitted in MATLAB 2010b (The MathWorks, Inc., Natick, MA). ? was then plotted against PDD{sub 10} and fitted with a linear relation to produce the calibration curve. The uncertainty in ? was evaluated by taking five repeat EPID images of the wedged field for a beam of 6 MV nominal energy. The consistency of measuring ? was found by taking repeat measurements on a single linac over a three month period. The method was also tested at 10 MV by repeating the water-tank crosscalibration for a range of energies centered approximately about a 10 MV nominal value. Finally, the calibration curve from the test linac and that from a separate clinical machine were compared to test consistency of the method across machines in a matched fleet. Results: The relationship between? and PDD{sub 10} was found to be strongly linear (R{sup 2} = 0.979) while the uncertainty in ? was found to be negligible compared to that associated with measuring PDD{sub 10} in the water-tank (0.3%). The repeat measurements over a three month period showed the method to be reasonably consistent (i.e., well within the limits defined by local QA tolerances). The measurements were repeated on a matched machine and the same linear relationship between ? and PDD{sub 10} was observed. The results for both machines were found to be indistinguishable across the energy range of interest (i.e., across and close to the thresholds defined by local QA tolerances), hence a single relation could be established across a matched fleet. Finally, the experiment was repeated on both linacs at 10 MV, where the linear relationship between ? and PDD{sub 10} was again observed. Conclusions: The authors conclude that EPID image analysis of physically wedged beam profiles can be used to measure linac photon beam energy. The uncertainty in such a measurement is dominated by that associated with measuring PDD{sub 10} in the water-tank; hence, the accuracies of these two methods are directly comparable. This method provides a useful technique for quickly performing energy constancy measurements while saving significant clinical downtime for QA.

Dawoud, S. M., E-mail: samir.dawoud@leedsth.nhs.uk; Weston, S. J.; Bond, I.; Ward, G. C.; Rixham, P. A.; Mason, J.; Huckle, A. [Department of Medical Physics and Engineering, St. James Institute of Oncology, St. James University Hospital, Leeds LS9 7TF (United Kingdom)] [Department of Medical Physics and Engineering, St. James Institute of Oncology, St. James University Hospital, Leeds LS9 7TF (United Kingdom); Sykes, J. R. [Institute of Medical Physics, School of Physics, The University of Sydney, New South Wales 2006, Australia and Department of Medical Physics and Engineering, St. James Institute of Oncology, St. James University Hospital, Leeds LS9 7TF (United Kingdom)] [Institute of Medical Physics, School of Physics, The University of Sydney, New South Wales 2006, Australia and Department of Medical Physics and Engineering, St. James Institute of Oncology, St. James University Hospital, Leeds LS9 7TF (United Kingdom)

2014-02-15T23:59:59.000Z

69

Damage identification and condition assessment of civil engineering structures through response measurement.  

E-Print Network (OSTI)

??This research study presents a new vibration-based non-destructive global structural damage identification and condition monitoring technique that can be used for detection, localization and quantification (more)

Bayissa, Wirtu

2007-01-01T23:59:59.000Z

70

Measured Performance and Analysis of Ground Source Heat Pumps for Space Conditioning and for Water Heating in a Low-Energy Test House Operated under Simulated Occupancy Conditions  

SciTech Connect

In this paper we present measured performance and efficiency metrics of Ground Source Heat Pumps (GSHPs) for space conditioning and for water heating connected to a horizontal ground heat exchanger (GHX) loop. The units were installed in a 345m2 (3700ft2) high-efficiency test house built with structural insulated panels (SIPs), operated under simulated occupancy conditions, and located in Oak Ridge, Tennessee (USA) in US Climate Zone 4 . The paper describes distinctive features of the building envelope, ground loop, and equipment, and provides detailed monthly performance of the GSHP system. Space conditioning needs of the house were completely satisfied by a nominal 2-ton (7.0 kW) water-to-air GSHP (WA-GSHP) unit with almost no auxiliary heat usage. Recommendations for further improvement through engineering design changes are identified. The comprehensive set of data and analyses demonstrate the feasibility and practicality of GSHPs in residential applications and their potential to help achieve source energy and greenhouse gas emission reduction targets set under the IECC 2012 Standard.

Ally, Moonis Raza [ORNL] [ORNL; Munk, Jeffrey D [ORNL] [ORNL; Baxter, Van D [ORNL] [ORNL; Gehl, Anthony C [ORNL] [ORNL

2012-01-01T23:59:59.000Z

71

Selection of Verification Methods for Measurement Instruments Under Restricted Resource Conditions  

Science Journals Connector (OSTI)

We consider criteria for selecting deterministic and stochastic decision methods for labor-intensive problems of verification (testing) of measurement instruments. The decision process is modeled using...

S. N. Filimonov

2014-04-01T23:59:59.000Z

72

Pressureheat release measurements during start-up conditions in a pulse combustor  

Science Journals Connector (OSTI)

An experimental study focusing on the temporal evolution of the global OH heat release (q?) and dynamic pressure (p?) from ignition to limit cycle conditions in an aerovalved pulse combustor has been carried out. The motivation of the work was to investigate how the thermo-acoustic relationships evolve, as very little is understood regarding how pressure and heat release couplings develop prior to establishing limit cycle conditions. The start-up experiments demonstrated that the total start-up sequences occurred within 100ms and can be subdivided into three regimes: (i) ignition and decay; (ii) instability growth; and (iii) onset of limit cycle operation. The main results showed that upon ignition the high amplitude impulse pressure wave corresponded to the natural frequency of the pulse combustor at ambient gas temperature and was verified by an acoustic model. The pressure field over the growth period exhibited two main trends, either steady amplitude growth or a short delay interval followed by steady amplitude growth to limit cycle conditions. Overall, no reproducibility in frequency or phase during the growth period was observed pointing to the influence of strong non-linear interactions. When operating under limit cycle conditions, the heat release and pressure oscillations were in phase, possessed high levels of coherence, and exhibited narrow band frequency response at the operating frequency and several harmonics.

J.R. Dawson; V.M. Rodriguez-Martinez; A.J. Beale; T. ODoherty

2005-01-01T23:59:59.000Z

73

ORSPHERE: PHYSICS MEASUREMENTS FOR BARE, HEU(93.2)-METAL SPHERE  

SciTech Connect

In the early 1970s Dr. John T. Mihalczo (team leader), J.J. Lynn, and J.R. Taylor performed experiments at the Oak Ridge Critical Experiments Facility (ORCEF) with highly enriched uranium (HEU) metal (called Oak Ridge Alloy or ORALLOY) in an attempt to recreate GODIVA I results with greater accuracy than those performed at Los Alamos National Laboratory in the 1950s (HEU-MET-FAST-001). The purpose of the Oak Ridge ORALLOY Sphere (ORSphere) experiments was to estimate the unreflected and unmoderated critical mass of an idealized sphere of uranium metal corrected to a density, purity, and enrichment such that it could be compared with the GODIVA I experiments. The very accurate description of this sphere, as assembled, establishes it as an ideal benchmark for calculational methods and cross-section data files (Reference 1). While performing the ORSphere experiments care was taken to accurately document component dimensions (0.0001 inches), masses (0.01 g), and material data. The experiment was also set up to minimize the amount of structural material in the sphere proximity. Two, correlated spheres were evaluated and judged to be acceptable as criticality benchmark experiments. This evaluation is given in HEU-MET-FAST-100. The second, smaller sphere was used for additional reactor physics measurements. Worth measurements (Reference 1, 2, 3 and 4), the delayed neutron fraction (Reference 3, 4 and 5) and surface material worth coefficient (Reference 1 and 2) are all measured and judged to be acceptable as benchmark data. The prompt neutron decay (Reference 6), relative fission density (Reference 7) and relative neutron importance (Reference 7) were measured, but are not evaluated. Information for the evaluation was compiled from References 1 through 7, the experimental logbooks 8 and 9 ; additional drawings and notes provided by the experimenter; and communication with the lead experimenter, John T. Mihalczo.

Margaret A. Marshall

2014-03-01T23:59:59.000Z

74

Impacts of WRF Physics and Measurement Uncertainty on California Wintertime Model Wet Bias  

SciTech Connect

The Weather and Research Forecast (WRF) model version 3.0.1 is used to explore California wintertime model wet bias. In this study, two wintertime storms are selected from each of four major types of large-scale conditions; Pineapple Express, El Nino, La Nina, and synoptic cyclones. We test the impacts of several model configurations on precipitation bias through comparison with three sets of gridded surface observations; one from the National Oceanographic and Atmospheric Administration, and two variations from the University of Washington (without and with long-term trend adjustment; UW1 and UW2, respectively). To simplify validation, California is divided into 4 regions (Coast, Central Valley, Mountains, and Southern California). Simulations are driven by North American Regional Reanalysis data to minimize large-scale forcing error. Control simulations are conducted with 12-km grid spacing (low resolution) but additional experiments are performed at 2-km (high) resolution to evaluate the robustness of microphysics and cumulus parameterizations to resolution changes. We find that the choice of validation dataset has a significant impact on the model wet bias, and the forecast skill of model precipitation depends strongly on geographic location and storm type. Simulations with right physics options agree better with UW1 observations. In 12-km resolution simulations, the Lin microphysics and the Kain-Fritsch cumulus scheme have better forecast skill in the coastal region while Goddard, Thompson, and Morrison microphysics, and the Grell-Devenyi cumulus scheme perform better in the rest of California. The effect of planetary boundary layer, soil-layer, and radiation physics on model precipitation is weaker than that of microphysics and cumulus processes for short- to medium-range low-resolution simulations. Comparison of 2-km and 12-km resolution runs suggests a need for improvement of cumulus schemes, and supports the use of microphysics schemes in coarser-grid applications.

Chin, H S; Caldwell, P M; Bader, D C

2009-07-22T23:59:59.000Z

75

The thermal conductivity of rock under hydrothermal conditions: measurements and applications  

SciTech Connect

The thermal conductivities of most major rock-forming minerals vary with both temperature and confining pressure, leading to substantial changes in the thermal properties of some rocks at the high temperatures characteristic of geothermal systems. In areas with large geothermal gradients, the successful use of near-surface heat flow measurements to predict temperatures at depth depends upon accurate corrections for varying thermal conductivity. Previous measurements of the thermal conductivity of dry rock samples as a function of temperature were inadequate for porous rocks and susceptible to thermal cracking effects in nonporous rocks. We have developed an instrument for measuring the thermal conductivity of water-saturated rocks at temperatures from 20 to 350 C and confining pressures up to 100 MPa. A transient line-source of heat is applied through a needle probe centered within the rock sample, which in turn is enclosed within a heated pressure vessel with independent controls on pore and confining pressure. Application of this technique to samples of Franciscan graywacke from The Geysers reveals a significant change in thermal conductivity with temperature. At reservoir-equivalent temperatures of 250 C, the conductivity of the graywacke decreases by approximately 25% relative to the room temperature value. Where heat flow is constant with depth within the caprock overlying the reservoir, this reduction in conductivity with temperature leads to a corresponding increase in the geothermal gradient. Consequently, reservoir temperature are encountered at depths significantly shallower than those predicted by assuming a constant temperature gradient with depth. We have derived general equations for estimating the thermal conductivity of most metamorphic and igneous rocks and some sedimentary rocks at elevated temperature from knowledge of the room temperature thermal conductivity. Application of these equations to geothermal exploration should improve estimates of subsurface temperatures derived from heat flow measurements.

Williams, Colin F.; Sass, John H.

1996-01-24T23:59:59.000Z

76

Memory difference control of unknown unstable fixed points: Drifting parameter conditions and delayed measurement  

E-Print Network (OSTI)

Difference control schemes for controlling unstable fixed points become important if the exact position of the fixed point is unavailable or moving due to drifting parameters. We propose a memory difference control method for stabilization of a priori unknown unstable fixed points by introducing a memory term. If the amplitude of the control applied in the previous time step is added to the present control signal, fixed points with arbitrary Lyapunov numbers can be controlled. This method is also extended to compensate arbitrary time steps of measurement delay. We show that our method stabilizes orbits of the Chua circuit where ordinary difference control fails.

Jens Christian Claussen; Thorsten Mausbach; Alexander Piel; Heinz Georg Schuster

2006-09-20T23:59:59.000Z

77

Effects of dilution conditions on diesel particle size distribution and filter mass measurements in case of marine fuels  

Science Journals Connector (OSTI)

Abstract Particle emission characteristics were studied from heavy-duty diesel engine operating on fuels with sulfur levels relevant to marine operation, i.e. 0.05% S and 3% S respectively. Effects of primary dilution temperature (PDT) and primary dilution ratio (PDR) were investigated together with effect of filter media and time of filter conditioning. PDT increase was found slowing down nucleation rate due to increase of saturation vapor pressures of volatile species. In turn, increasing PDR reduces partial pressure of exhaust species and hence weakens both homogeneous and heterogeneous nucleation. All these effects are amplified by high sulfur content in marine fuels which increases available amount of nucleation-prone vapor-phase semivolatile compounds. At the same time, water condensation artifact was observed at PDR=3. No filter type was found to be overwhelmingly superior as certain positive and/or negative measurement artifacts are inherently associated with all filter materials. The filter conditioning time was also found to cause substantial PM mass variation, as control over VOC take up from (or lost to) laboratory air and hydration of sulfuric acid is required. The standard 24hour conditioning time was found insufficient to reach complete PM mass equilibrium, so longer time is required when measuring from high-sulfur fuels.

Sergey Ushakov; Harald Valland; Jrgen B. Nielsen; Erik Hennie

2014-01-01T23:59:59.000Z

78

ThermalPhysicsLaboratory,VanderbiltUniversity Thermal Measurement of harsh environments using  

E-Print Network (OSTI)

PhysicsLaboratory,VanderbiltUniversity Problem/Tests Cook-off Live test on MK45 Mod 4 (NSWC) ) 3/11 #12;Thermal

Walker, D. Greg

79

Fuel nitrogen release during black liquor pyrolysis; Part 1: Laboratory measurements at different conditions  

SciTech Connect

Fuel nitrogen release during black liquor pyrolysis is high. There is only minor release during the drying stage. Ammonia is the main fixed nitrogen species formed. The rate of fixed nitrogen release increases with increasing temperature. The level of fixed nitrogen released by birch liquor is almost twice the level for pine liquor. Assuming complete conversion to NO, fixed nitrogen yields gave NO concentrations near typically measured values for flue gases in full scale recovery boilers. The purpose of this work was to gain more detailed information about the behavior of the fuel nitrogen in black liquor combustion. The work focused on the pyrolysis or devolatilization of the combustion process. Devolatilization is the stage at which the majority (typically 50--80%) of the liquor organics release from a fuel particle or droplet as gaseous species due to the rapid destruction of the organic macromolecules in the liquor. In this paper, the authors use the terms devolatilization and pyrolysis interchangeably with no difference in their meaning.

Aho, K.; Vakkilainen, E. (A. Ahistrom Corp., Varkaus (Finland)); Hupa, M. (Abo Akademi Univ., Turku (Finland). Chemical Engineering Dept.)

1994-05-01T23:59:59.000Z

80

PHYSICAL REVIEW E 89, 023003 (2014) Energy flux measurement from the dissipated energy in capillary wave turbulence  

E-Print Network (OSTI)

energy flux are in good agreement with wave turbulence theory. The Kolmogorov-Zakharov constant waves interact with each other, they can develop a regime of wave turbulence where the wave energyPHYSICAL REVIEW E 89, 023003 (2014) Energy flux measurement from the dissipated energy in capillary

Falcon, Eric

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81

PHYSICAL REVIEW E 84, 056408 (2011) Doppler measurement of implosion velocity in fast Z-pinch x-ray sources  

E-Print Network (OSTI)

black holes in galaxy merger remnants [5]. In the laboratory, the Doppler effect reveals rotation of Doppler effects in these K-shell lines thus provides unique information about the plasma motionPHYSICAL REVIEW E 84, 056408 (2011) Doppler measurement of implosion velocity in fast Z-pinch x

Starobinets, Alexander

82

ARTICLES ON SINGLE-MOLECULE PHYSICS AND CHEMISTRY Direct measurements of memory effects in single-molecule kinetics  

E-Print Network (OSTI)

ARTICLES ON SINGLE-MOLECULE PHYSICS AND CHEMISTRY Direct measurements of memory effects in single-molecule and correlations of single-molecule sequences of modulated reactions are explicitly evaluated in the stochastic of the stochastic rate expression, characterizes the correlation in single-molecule rate processes in a formalism

Cao, Jianshu

83

Measurement of the speed of sound by observation of the Mach cones in a complex plasma under microgravity conditions  

E-Print Network (OSTI)

We report the first observation of the Mach cones excited by a larger microparticle (projectile) moving through a cloud of smaller microparticles (dust) in a complex plasma with neon as a buffer gas under microgravity conditions. A collective motion of the dust particles occurs as propagation of the contact discontinuity. The corresponding speed of sound was measured by a special method of the Mach cone visualization. The measurement results are fully incompatible with the theory of ion acoustic waves. We explore the analogy between a strongly coupled Coulomb system and a solid. A scaling law for the complex plasma makes it possible to derive a theoretical estimate for the speed of sound, which is in a reasonable agreement with the experiments in strongly coupled complex plasmas.

Zhukhovitskii, D I; Molotkov, V I; Lipaev, A M; Naumkin, V N; Thomas, H M; Ivlev, A V; Schwabe, M; Morfill, G E

2014-01-01T23:59:59.000Z

84

Radiological Survey of Contaminated Installations of Research Reactor before Dismantling in High Dose Conditions with Complex for Remote Measurements of Radioactivity - 12069  

SciTech Connect

Decontamination and decommissioning of the research reactors MR (Testing Reactor) and RFT (Reactor of Physics and Technology) has recently been initiated in the National Research Center (NRC) 'Kurchatov institute', Moscow. These research reactors have a long history and many installations - nine loop facilities for experiments with different kinds of fuel. When decommissioning nuclear facilities it is necessary to measure the distribution of radioactive contamination in the rooms and at the equipment at high levels of background radiation. At 'Kurchatov Institute' some special remote control measuring systems were developed and they are applied during dismantling of the reactors MR and RFT. For a survey of high-level objects a radiometric system mounted on the robotic Brokk vehicle is used. This system has two (4? and collimated) dose meters and a high resolution video camera. Maximum measured dose rate for this system is ?8.5 Sv/h. To determine the composition of contaminants, a portable spectrometric system is used. It is a remotely controlled, collimated detector for scanning the distribution of radioactive contamination. To obtain a detailed distribution of contamination a remote-controlled gamma camera is applied. For work at highly contaminated premises with non-uniform background radiation, another camera is equipped with rotating coded mask (coded aperture imaging). As a result, a new system of instruments for remote radioactivity measurements with wide range of sensitivity and angular resolution was developed. The experience and results of measurements in different areas of the reactor and at its loop installations, with emphasis on the radioactive survey of highly-contaminated samples, are presented. These activities are conducted under the Federal Program for Nuclear and Radiation Safety of Russia. Adaptation of complex remote measurements of radioactivity and survey of contaminated installations of research reactor before dismantling in high dose conditions has proven successful. The radioactivity measuring devices for operation at high, non-uniform dose background were tested in the field and a new data of measurement of contamination distribution in the premises and installations were obtained. (authors)

Danilovich, Alexey; Ivanov, Oleg; Lemus, Alexey; Smirnov, Sergey; Stepanov, Vyacheslav; Volkovich, Anatoly [National Research Centre 'Kurchatov Institute', Moscow (Russian Federation)

2012-07-01T23:59:59.000Z

85

ccsd-00013234,version1-5Nov2005 On the physical meaning of the gauge conditions of Classical Electromagnetism  

E-Print Network (OSTI)

Electromagnetism : the hydrodynamics analogue viewpoint Germain Rousseaux Physique et M´ecanique des Milieux H novembre 2005) Based on an analogy between Fluid Mechanics and Electromagnetism, we claim that the gauge conditions of Classical Electromagnetism are not equivalent contrary to the common belief. These "gauges

Paris-Sud XI, Université de

86

THE PHYSICAL CONDITIONS IN STARBURSTS DERIVED FROM BAYESIAN FITTING OF MID-INFRARED SPECTRAL ENERGY DISTRIBUTION MODELS: 30 DORADUS AS A TEMPLATE  

SciTech Connect

To understand and interpret the observed spectral energy distributions (SEDs) of starbursts, theoretical or semi-empirical SED models are necessary. Yet, while they are well founded in theory, independent verification and calibration of these models, including the exploration of possible degeneracies between their parameters, are rarely made. As a consequence, a robust fitting method that leads to unique and reproducible results has been lacking. Here we introduce a novel approach based on Bayesian analysis to fit the Spitzer-Infrared Spectrometer spectra of starbursts using the SED models proposed by Groves et al.. We demonstrate its capabilities and verify the agreement between the derived best-fit parameters and actual physical conditions by modeling the nearby, well-studied, giant H II region 30 Doradus in the LMC. The derived physical parameters, such as cluster mass, cluster age, interstellar medium pressure, and covering fraction of photodissociation regions, are representative of the 30 Doradus region. The inclusion of the emission lines in the modeling is crucial to break degeneracies. We investigate the limitations and uncertainties by modeling subregions, which are dominated by single components, within 30 Doradus. A remarkable result for 30 Doradus in particular is a considerable contribution to its mid-infrared spectrum from hot ({approx}300 K) dust. The demonstrated success of our approach will allow us to derive the physical conditions in more distant, spatially unresolved starbursts.

MartInez-Galarza, J. R.; Groves, B.; Brandl, B. [Leiden Observatory, Leiden University, P.O. Box 9513, 2300 CA Leiden (Netherlands); De Messieres, G. E.; Indebetouw, R. [Department of Astronomy, University of Virginia, P.O. Box 3818, Charlottesville, VA (United States); Dopita, M. A. [Mount Stromlo and Siding Spring Observatories, Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston Creek, ACT 2611 (Australia)

2011-09-10T23:59:59.000Z

87

Latent class analysis of new self-report measures of physical and sexual abuse  

E-Print Network (OSTI)

Latent class analysis (LCA) will be used to meet this goalLanza, Flaherty & Collins, 2003). LCA capitalizes on the3) physical and sexual abuse. LCA will be used to identify

Nooner, Kate Brody

2007-01-01T23:59:59.000Z

88

Electrons, Photons, and Force: Quantitative Single-Molecule Measurements from Physics to Biology  

Science Journals Connector (OSTI)

(102, 103) As mentioned previously, STM frame rates are typically on the order of minutes, so such studies are sometimes performed at low temperatures (often 4 K) to slow diffusion to a relevant time scale; the temperature is selected to match the barrier to motion and the limited data acquisition rate. ... Properties of single molecules can also be inferred by causing them to pass through a nanometer-scale pore in a membrane small enough to allow passage of only one molecule at a time. ... Physical Review B: Condensed Matter and Materials Physics (2002), 65 (11), 115420/1-115420/5 CODEN: PRBMDO; ISSN:0163-1829. ...

Shelley A. Claridge; Jeffrey J. Schwartz; Paul S. Weiss

2011-02-22T23:59:59.000Z

89

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

SciTech Connect

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

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

2009-07-15T23:59:59.000Z

90

Verification of physical models used for root canal measurement by impedance comparison  

Science Journals Connector (OSTI)

In the endodontic treatment of the root canal, one of the most important procedures is the root canal length determination. Apex-locators are commercial electronic devices used to determine canal length by measur...

T. Marjanovi?; Z. Stare; I. Lackovic

2007-01-01T23:59:59.000Z

91

Objectively measured physical activity in pregnancy: a study in obese and overwieght women.  

E-Print Network (OSTI)

minutes per day of moderate or vigorous activity in early pregnancy. In a study of non-pregnant women (mean age 40.7 years, SD 6.4) assessed using the same methodology 34% achieved at least 30 minutes MVPA/day [32]. The 2008 Health Survey for England... complications. Cochrane Database of Systematic Reviews 2006, 2. 17. Chasan-Taber L, Marcus BH, Stanek E, Ciccolo JT, Marquez DX, Solomon CG, Markenson G: A randomized controlled trial of prenatal physical activity to prevent gestational diabetes: design...

McParlin, Catherine; Robson, Stephen C; Tennant, Peter W G; Besson, Herve; Rankin, Judith; Adamson, Ashley J; Pearce, Mark S; Bell, Ruth

2010-11-29T23:59:59.000Z

92

Evaluating the bonding condition of NASA spray on foam insulation (SOFI) using audio frequency sound absorption measurements  

Science Journals Connector (OSTI)

The bonding condition of the spray on foam insulation (SOFI) used to insulate the external tank of the NASA space shuttle can be found by using the audio frequency sound absorption coefficient. The ASTM E1050 standard method for sound absorptionmeasurements was used with an open?ended 1?in?diam cast acrylic impedance tube sealed to the SOFI with closed cell PVC foam. Two artificially disbonded locations measuring 1.0 in. by 5.5 in. by 0.0625 in. and 2.0 in. by 8.0 in. by 0.0625 in. were detected by peaks in the sound absorption coefficient spectrum. The peaks in the sound absorptionspectrum between 1000 and 4000 Hz were 25% to 50% higher over disbonded areas when compared to bonded locations. The maximum and minimum sound absorption levels for the foam ranged between approximately 0.1 and 0.3. The entire sample was scanned using the sound absorption peaks as indicators. Samples of 2?in.?thick polystyrene foam were used with different sized defects at different locations in the foam to relate defect size and location to peaks in absorption coeffi?cient spectrum. [Work supported by NASA under Award No. NAG102098.

2005-01-01T23:59:59.000Z

93

Physical measurements of the mohair fleece as related to age, location and season  

E-Print Network (OSTI)

indicated variation of these factors among dif- ferent ages of goats and among different portions of the fleece. The South African Wool Textile Research Institute (196~) reported the average fiber length is only 60 percent of the length of the staple... fleece was divided into 32 equal portions by volume. Approximately equal amounts were taken from each portion to make up two replicate samples weighing 300 grams each. These samples were scoured to determine clean yield under standard conditions...

Davis, Howard Orrell

2012-06-07T23:59:59.000Z

94

Measuring mass-loss rates and constraining shock physics using X-ray line profiles of O stars from the Chandra archive  

Science Journals Connector (OSTI)

......Measuring mass-loss rates and constraining shock physics using X-ray line...sight lines that pass through the densest...wind mass-loss rate, we tabulated...low mass-loss rates: (1) the line...missing some crucial physics; (2) processes......

David H. Cohen; Emma E. Wollman; Maurice A. Leutenegger; Jon O. Sundqvist; Alex W. Fullerton; Janos Zsarg; Stanley P. Owocki

2014-01-01T23:59:59.000Z

95

arXiv:1004.0373v3[physics.ins-det]8May2012 Measurement of scintillation efficiency for nuclear recoils in liquid argon  

E-Print Network (OSTI)

arXiv:1004.0373v3[physics.ins-det]8May2012 Measurement of scintillation efficiency for nuclear results for nuclear recoil energies between 10 and 250 keVr at zero electric field. II. REVIEW OF PHYSICAL University, New Haven, CT (Dated: May 9, 2012) The scintillation light yield of liquid argon from nuclear

Sheldon, Nathan D.

96

Roots of Mold Problems and Humidity Control Measures in Institutional Buildings with Pre-Existing Mold Condition  

E-Print Network (OSTI)

Management, and the TAMU Physical Plant, was dispatched to perform Continuous Commissioning on these commercial buildings in order to find viable solutions to the humidity problem. The CC group performed extensive field tests and analysis on building air...

Chen, H.; Deng, S.; Bruner, H.; Garcia, J.

2004-01-01T23:59:59.000Z

97

Comparison of predicted ground-level airborne radionuclide concentrations to measured values resulting from operation of the Los Alamos Meson Physics Facility  

E-Print Network (OSTI)

A comparison study of measured and predicted downwind radionuclide concentrations from the Los Alamos Meson Physics Facility (LAMPF) was performed. The radionuclide emissions consist primarily of the radioisotopes "C, 'IN, and 110. The gases...

Hoak, William Vandergrift

2012-06-07T23:59:59.000Z

98

A comparative study on the CANDU-6 reactivity device model based on Wolsong-2 physics measurement data  

SciTech Connect

A benchmark calculation of a 713 MWe Canada deuterium uranium (CANDU) reactor was performed based on the physics measurement data of Wolsong-2 nuclear power plant by using WIMS-AECL, DRAGON, and RFSP codes. The benchmark calculation included sensitivity analyses on the number of energy groups, cross-section library, and the weighting spectrum of the homogenized lattice parameters. The effective multiplication factor, critical boron concentration, reactivity device worth and the flux distribution were estimated and compared with those obtained by the measurement and standard CANDU reactor physics design tools. In general, the prediction errors by WIMS-AECL, DRAGON and RFSP codes were within the acceptance limit for all the sensitivity calculations. The sensitivity calculations also showed that the calculation accuracy was improved when two energy groups were used especially for the prediction of the reactivity worth of strong absorbers such as mechanical control absorbers and shutoff rods. However, the prediction error increased when calculating the reactivity worth of the adjuster banks with two energy groups. Therefore a further study is recommended to obtain consistent results for the benchmark calculation. (authors)

Park, C. J.; Choi, H. [Korea Atomic Energy Research Inst., Deokjin-dong 150, Yuseong-gu, Daejeon (Korea, Republic of)

2006-07-01T23:59:59.000Z

99

On the absence of wind bow-shocks around OB-runaway stars: probing the physical conditions of the interstellar medium  

E-Print Network (OSTI)

High-resolution IRAS maps are used to search for the presence of stellar-wind bow-shocks around high-mass X-ray binaries (HMXBs). Their high space velocities, recently confirmed with Hipparcos observations, combined with their strong stellar winds should result in the formation of wind bow-shocks. Except for the already known bow-shock around Vela X-1 (Kaper et al. 1997), we do not find convincing evidence for a bow-shock around any of the other HMXBs. Also in the case of (supposedly single) OB-runaway stars, only a minority appears to be associated with a bow-shock (Van Buren et al. 1995). We investigate why wind bow-shocks are not detected for the majority of these OB-runaway systems: is this due to the IRAS sensitivity, the system's space velocity, the stellar-wind properties, or the height above the galactic plane? It turns out that none of these suggested causes can explain the low detection rate (~40%). We propose that the conditions of the interstellar medium mainly determine whether a wind bow-shock is formed or not. In hot, tenuous media (like inside galactic superbubbles) the sound speed is high (~100 km/s), such that many runaways move at subsonic velocity through a low-density medium, thus preventing the formation of an observable bow-shock. Superbubbles are expected (and observed) around OB associations, where the OB-runaway stars were once born. Turning the argument around, we use the absence (or presence) of wind bow-shocks around OB runaways to probe the physical conditions of the interstellar medium in the solar neighbourhood.

Fredrik Huthoff; Lex Kaper

2001-12-18T23:59:59.000Z

100

Validation of nuclear design method by measured data obtained in the physics test at a small fast reactor  

SciTech Connect

The present paper discusses applicability of the measured data of Joyo cores from a view point of integral validation for the 4S nuclear design methodology. Through the evaluation of isothermal reactivity coefficients and reactivity losses due to burnup, the results confirm that those MK-I and MK-II database are effective in order to increase the dataset for uncertainty estimation for the prediction. Discussions on the 4S design method validation are also done through the analyses of criticality, power distributions and reactivity loss due to burn-up. The C/E values for criticality and reaction rate distributions are confirmed to be consistent with those obtained from the physics benchmark experiments. Through an analysis of burnup coefficient of the MK-I core by the detailed Monte Carlo calculations, the C/E value is 1.1, which is close to 1.06 obtained by the deterministic transport analysis. (authors)

Nagata, A.; Tsuboi, Y. [Advanced Energy Design and Engineering Dep., Toshiba Corporation, 8 Shinsugita-cho, Isogo-ku, Yokohama, 235-8523 (Japan); Moriki, Y. [Power and Industrial Systems Research and Development Center, Toshiba Corporation, 8 Shinsugita-cho, Isogo-ku, Yokohama, 235-8523 (Japan); Kawashima, M. [Nuclear Technology Application Dept., Toshiba Nuclear Engineering Services Corporation, 8 Shinsugita-cho, Isogo-ku, Yokohama, 235-8523 (Japan)

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" 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

Examination of Some Performance Characteristics of Breath Alcohol Measurements Obtained with the Intoxilyzer 8000C Following Social Drinking Conditions  

Science Journals Connector (OSTI)

......commenced within 5 min of the end of drinking (EOD). For 14 blood-breath pairs, measured...of samples drawn at least 30 min after EOD and within 5 min of the corresponding breath...measurements (MID5) over 20-30 min after EOD with the precision of replicate BrAC values......

James H. Watterson; Kayla N. Ellefsen

2009-10-01T23:59:59.000Z

102

The system for observing fitness instruction time (SOFIT) as a measure of energy expenditure during classroom based physical activity  

E-Print Network (OSTI)

The aim of this investigation was to develop an equation to estimate physical activity energy expenditure (PAEE) during a 10-min physically active academic lesson using The System for Observing Fitness Instruction Time ...

Honas, Jeffery J.; Washburn, Richard A.; Smith, Bryan K.; Greene, Leon; Cook-Wiens, Galen; Donnelly, Joseph E.

2008-01-01T23:59:59.000Z

103

METHOD FOR SIMULTANEOUS 90SR AND 137CS IN-VIVO MEASUREMENTS OF SMALL ANIMALS AND OTHER ENVIRONMENTAL MEDIA DEVELOPED FOR THE CONDITIONS OF THE CHERNOBYL EXCLUSION ZONE  

SciTech Connect

To perform in vivo simultaneous measurements of the {sup 90}Sr and {sup 137}Cs content in the bodies of animals living in the Chernobyl Exclusion Zone (ChEZ), an appropriate method and equipment were developed and installed in a mobile gamma beta spectrometry laboratory. This technique was designed for animals of relatively small sizes (up to 50 g). The {sup 90}Sr content is measured by a beta spectrometer with a 0.1 mm thick scintillation plastic detector. The spectrum processing takes into account the fact that the measured object is 'thick-layered' and contains a comparable quantity of {sup 137}Cs, which is a characteristic condition of the ChEZ. The {sup 137}Cs content is measured by a NaI scintillation detector that is part of the combined gamma beta spectrometry system. For environmental research performed in the ChEZ, the advantages of this method and equipment (rapid measurements, capability to measure live animals directly in their habitat, and the capability of simultaneous {sup 90}Sr and {sup 137}Cs measurements) far outweigh the existing limitations (considerations must be made for background radiation and the animal size, skeletal shape and body mass). The accuracy of these in vivo measurements is shown to be consistent with standard spectrometric and radiochemical methods. Apart from the in vivo measurements, the proposed methodology, after a very simple upgrade that is also described in the article, works even more accurately with samples of other media, such as soil and plants.

Farfan, E.; Jannik, T.

2011-10-01T23:59:59.000Z

104

Measured Space Conditioning and Water Heating Performance of a Ground-Source Integrated Heat Pump in a Residential Application  

SciTech Connect

In an effort to reduce residential building energy consumption, a ground-source integrated heat pump was developed to meet a home s entire space conditioning and water heating needs, while providing 50% energy savings relative to a baseline suite of minimum efficiency equipment. A prototype 7.0 kW system was installed in a 344 m2 research house with simulated occupancy in Oak Ridge, TN. The equipment was monitored from June 2012 through January 2013.

Munk, Jeffrey D [ORNL] [ORNL; Ally, Moonis Raza [ORNL] [ORNL; Baxter, Van D [ORNL] [ORNL; Gehl, Anthony C [ORNL] [ORNL

2014-01-01T23:59:59.000Z

105

Measurements  

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

magnetic field induced by a turbulent flow of liquid metal a... M. D. Nornberg, E. J. Spence, R. D. Kendrick, C. M. Jacobson, and C. B. Forest b Department of Physics, University...

106

Sorption measurements performed under site-specific conditions maxey flats, Kentucky, and west valley, new york, disposal sites  

Science Journals Connector (OSTI)

Sorption coefficients have been determined using site-specific sediments and trench waters, collected from the Maxey Flats, Kentucky, and West Valley, New York, low-level radioactive waste disposal sites. Experimental apparatus and procedures are described to preserve the anoxic character of the liquid phases during experiments. Experiments using anoxic and oxidized trench waters were performed as functions of solution pH, soil/solution ratio, water and soil composition. The lowest sorption was observed with the combination of anoxic waters and untreated soilthe combination most closely resembling the immediate trench environment. For best results in predictive applications, sorption data should be determined under conditions which simulate those in the field as closely as possible. The total radionuclide retention capacity of reducing geochemical environments is the sum of sorption processes on solid phases, as well as precicipation, and coprecipitation reactions involving iron mineral phases (sulfides and oxyhydroxides).

R.F. Pietrzak; K.S. Czyscinski; A.J. Weiss

1981-01-01T23:59:59.000Z

107

In-situ microscale through-silicon via strain measurements by synchrotron x-ray microdiffraction exploring the physics behind data interpretation  

SciTech Connect

In-situ microscale thermomechanical strain measurements have been performed in combination with synchrotron x-ray microdiffraction to understand the fundamental cause of failures in microelectronics devices with through-silicon vias. The physics behind the raster scan and data analysis of the measured strain distribution maps is explored utilizing the energies of indexed reflections from the measured data and applying them for beam intensity analysis and effective penetration depth determination. Moreover, a statistical analysis is performed for the beam intensity and strain distributions along the beam penetration path to account for the factors affecting peak search and strain refinement procedure.

Liu, Xi [The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); Thadesar, Paragkumar A.; Oh, Hanju; Bakir, Muhannad S. [School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); Taylor, Christine L.; Sitaraman, Suresh K. [The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); Kunz, Martin; Tamura, Nobumichi [Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, California 94720 (United States)

2014-09-15T23:59:59.000Z

108

LANL | Physics | Nuclear Physics  

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

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

109

APPLIED PHYSICS APPLIED PHYSICS  

E-Print Network (OSTI)

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

Mottram, Nigel

110

arXiv:0708.2925v1[physics.atom-ph]21Aug2007 Using Molecules to Measure Nuclear Spin-Dependent Parity Violation  

E-Print Network (OSTI)

- currents (VeAn). This can be parameterized by two con- stants, C2u,d, which describe the VeAn couplings to up and down quarks. These are suppressed in the Standard Model (SM), making C2u,d difficult of this suppression, even moderately precise measurements of C2u,d could be sensitive to new physics at TeV energy

Kozlov, Mikhail G

111

PHYSICAL REVIEW C 81, 014607 (2010) Fission fragment mass and energy distributions as a function of incident neutron energy measured  

E-Print Network (OSTI)

of incident neutron energy measured in a lead slowing-down spectrometer C. Romano,1 Y. Danon,1,* R. Block,1 J; published 19 January 2010) A new method of measuring fission fragment mass and energy distributions to measure the neutron-induced fission cross section and fragment mass and energy distributions of 25.3 ± 0

Danon, Yaron

112

Measurement of the half-life of the T=$\\frac{1}{2}$ mirror decay of $^{19}$Ne and its implication on physics beyond the standard model  

E-Print Network (OSTI)

The $\\frac{1}{2}^+ \\rightarrow \\frac{1}{2}^+$ superallowed mixed mirror decay of $^{19}$Ne to $^{19}$F is excellently suited for high precision studies of the weak interaction. However, there is some disagreement on the value of the half-life. In a new measurement we have determined this quantity to be $T_{1/2}$ = $17.2832 \\pm 0.0051_{(stat)}$ $\\pm 0.0066_{(sys)}$ s, which differs from the previous world average by 3 standard deviations. The impact of this measurement on limits for physics beyond the standard model such as the presence of tensor currents is discussed.

L. J. Broussard; H. O. Back; M. S. Boswell; A. S. Crowell; P. Dendooven; G. S. Giri; C. R. Howell; M. F. Kidd; K. Jungmann; W. L. Kruithof; A. Mol; C. J. G. Onderwater; R. W. Pattie Jr.; P. D. Shidling; M. Sohani; D. J. van der Hoek; A. Rogachevskiy; E. Traykov; O. O. Versolato; L. Willmann; H. W. Wilschut; A. R. Young

2014-05-28T23:59:59.000Z

113

Air Conditioning  

Science Journals Connector (OSTI)

Air Conditioning ... CHEMISTS and engineers use air conditioning as a valuable tool in more than two hundred industries. ... Air conditioning is a tool with many facets. ...

MARGARET INGELS

1938-02-10T23:59:59.000Z

114

Comparison between the measured and calculated reactivity in measuring the effectiveness of the emergency protection at the stage of physical start-up of unit no. 3 at the Kalinin nuclear power plant  

SciTech Connect

This paper presents comparisons between the effectiveness of the emergency protection under both stationary and nonstationary formulations calculated with the use of the RADUGA-7.5 package and experimental data obtained in measuring the 'weight' of the emergency protection in the process of physical start-up of the VVER-1000 reactor of unit no. 3 of the Kalinin NPP. On the basis of the results obtained, recommendations are given on comparing the measured and calculated reactivity and parameters determined by using its value.

Kavun, O. Yu.; Popykin, A. I.; Shevchenko, R. A., E-mail: rshevchenko@secnrs.ru; Shevchenko, S. A. [Scientific and Engineering Center for Nuclear and Radiation Safety (Russian Federation)

2012-12-15T23:59:59.000Z

115

An open question: Are topological arguments helpful in setting initial conditions for transport problems and quantization criteria/ quantum computing for Density Wave physics?  

E-Print Network (OSTI)

We present derived I-E curves that match Zenier curves used to fit data experimentally with wavefunctionals congruent with the false vacuum hypothesis. The open question is whether the coefficients picked in both the wavefunctionals and the magnitude of the coefficients of the driven sine Gordon physical system should be picked by topological charge arguments that in principle appear to assign values that have a tie in with the false vacuum hypothesis first presented by Sidney Coleman. Our supposition is that indeed this is useful and that the topological arguments give evidence as to a first order phase transition which gives credence to the observed and calculated I-E curve as evidence of a quantum switching phenomena in density wave physics, one which we think with further development would have applications to quantum computing, via quantum coherent phase evolution, as outlined in this paper . This analysis is enhanced by a new phi to the fourth power field theory treatment of how to model field theory in real time evolution as given to the Author by Dr. Fred Cooper as part of a meeting in KITP, UCSB in early 2008

A. W. Beckwith

2008-05-01T23:59:59.000Z

116

Aerodynamic characteristics of a feathered dinosaur measured using physical models. Effects of form on static stability and control effectiveness  

E-Print Network (OSTI)

McCay MG (2001) Aerodynamic stability and maneuverability ofrain forest canopy: the aerodynamic environment of gliding2011) Measurement of the aerodynamic stability and control

Evangelista, Dennis

2013-01-01T23:59:59.000Z

117

CT head-scan dosimetry in an anthropomorphic phantom and associated measurement of ACR accreditation-phantom imaging metrics under clinically representative scan conditions  

SciTech Connect

Purpose: To measure radiation absorbed dose and its distribution in an anthropomorphic head phantom under clinically representative scan conditions in three widely used computed tomography (CT) scanners, and to relate those dose values to metrics such as high-contrast resolution, noise, and contrast-to-noise ratio (CNR) in the American College of Radiology CT accreditation phantom.Methods: By inserting optically stimulated luminescence dosimeters (OSLDs) in the head of an anthropomorphic phantom specially developed for CT dosimetry (University of Florida, Gainesville), we measured dose with three commonly used scanners (GE Discovery CT750 HD, Siemens Definition, Philips Brilliance 64) at two different clinical sites (Walter Reed National Military Medical Center, National Institutes of Health). The scanners were set to operate with the same data-acquisition and image-reconstruction protocols as used clinically for typical head scans, respective of the practices of each facility for each scanner. We also analyzed images of the ACR CT accreditation phantom with the corresponding protocols. While the Siemens Definition and the Philips Brilliance protocols utilized only conventional, filtered back-projection (FBP) image-reconstruction methods, the GE Discovery also employed its particular version of an adaptive statistical iterative reconstruction (ASIR) algorithm that can be blended in desired proportions with the FBP algorithm. We did an objective image-metrics analysis evaluating the modulation transfer function (MTF), noise power spectrum (NPS), and CNR for images reconstructed with FBP. For images reconstructed with ASIR, we only analyzed the CNR, since MTF and NPS results are expected to depend on the object for iterative reconstruction algorithms.Results: The OSLD measurements showed that the Siemens Definition and the Philips Brilliance scanners (located at two different clinical facilities) yield average absorbed doses in tissue of 42.6 and 43.1 mGy, respectively. The GE Discovery delivers about the same amount of dose (43.7 mGy) when run under similar operating and image-reconstruction conditions, i.e., without tube current modulation and ASIR. The image-metrics analysis likewise showed that the MTF, NPS, and CNR associated with the reconstructed images are mutually comparable when the three scanners are run with similar settings, and differences can be attributed to different edge-enhancement properties of the applied reconstruction filters. Moreover, when the GE scanner was operated with the facility's scanner settings for routine head exams, which apply 50% ASIR and use only approximately half of the 100%-FBP dose, the CNR of the images showed no significant change. Even though the CNR alone is not sufficient to characterize the image quality and justify any dose reduction claims, it can be useful as a constancy test metric.Conclusions: This work presents a straightforward method to connect direct measurements of CT dose with objective image metrics such as high-contrast resolution, noise, and CNR. It demonstrates that OSLD measurements in an anthropomorphic head phantom allow a realistic and locally precise estimation of magnitude and spatial distribution of dose in tissue delivered during a typical CT head scan. Additional objective analysis of the images of the ACR accreditation phantom can be used to relate the measured doses to high contrast resolution, noise, and CNR.

Brunner, Claudia C.; Stern, Stanley H.; Chakrabarti, Kish [U.S. Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993 (United States)] [U.S. Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993 (United States); Minniti, Ronaldo [National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899 (United States)] [National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899 (United States); Parry, Marie I. [Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, Maryland 20889 (United States)] [Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, Maryland 20889 (United States); Skopec, Marlene [National Institutes of Health, 9000 Rockville Pike, Bethesda, Maryland 20892 (United States)] [National Institutes of Health, 9000 Rockville Pike, Bethesda, Maryland 20892 (United States)

2013-08-15T23:59:59.000Z

118

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

Science Journals Connector (OSTI)

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

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

2014-01-01T23:59:59.000Z

119

Spatially resolved physical conditions of molecular gas and potential star formation tracers in M83, revealed by the Herschel SPIRE FTS  

E-Print Network (OSTI)

Since the launch of the Herschel Space Observatory, our understanding about the photo-dissociation regions (PDR) has taken a step forward. In the bandwidth of the Fourier Transform Spectrometer (FTS) of the Spectral and Photometric Imaging REceiver (SPIRE) on board Herschel, ten CO rotational transitions, including J=4-3 to J=13-12, and three fine structure lines, including [CI] 609, [CI] 370, and [NII] 250 micron, are covered. In this paper, I present our findings from the FTS observations at the nuclear region of M83, based on the spatially resolved physical parameters derived from the CO spectral line energy distribution (SLED) map and the comparisons with the dust properties and star-formation tracers. I will discuss (1) the potential of using [NII] 250 and [CI] 370 micron as star-formation tracers; (2) the reliability of tracing molecular gas with CO; (3) the excitation mechanisms of warm CO; (4) the possibility of studying stellar feedback by tracing the thermal pressure of molecular gas in the nuclear ...

Wu, Ronin; Galliano, Frdric; Wilson, Christine D; Kamenetzky, Julia; Lee, Min-Young; Schirm, Maximilien; Hony, Sacha; Lebouteiller, Vianney; Spinoglio, Luigi; Cormier, Diane; Glenn, Jason; Maloney, Philip R; Pereira-Santaella, Miguel; Rmy-Ruyer, Aurlie; Baes, Martin; Boselli, Alexandro; Bournaud, Frdric; De Looze, Ilse; Hughes, Thomas M; Panuzzo, Pasquale; Rangwala, Naseem

2014-01-01T23:59:59.000Z

120

15 - Measurement  

Science Journals Connector (OSTI)

Publisher Summary This chapter focuses on the various methods and equipments used in the measurement of liquids and gases in pipelines. Streams that transport mixed natural gas liquids require the use of mass measurement to accurately account for the volume of the components, which make up the mix. Mass measurement eliminates the effects of non-ideal mixing and the need for compressibility factors. The measurement system that provides basic simplicity, reliability, wide acceptance, and the capability of handling variable mix streams without breaking new frontiers in measurement methods is the orifice flow measuring element with online density meter and microprocessor flow computer. The orifice is a static device generally inert to the measured fluid conditions, and calibration consists of simple dimensional measurement and conformance to specified physical tolerances. The second element, the density meter, is an external unit that is easily isolated from the flowing stream for calibration, inspection, and maintenance. The relative insensitivity of CO2 density to small changes in pressure in the primary flow to the orifice meters permits locating the density meter upstream of the meter manifold, thereby serving several meters. The microprocessor flow computer, or third element of the system, is essential to achieve the advantages of integrated mass flow, which comes from the ability of the computer to make computations in essentially "real time." A development program to improve the overall uncertainty of orifice metering was initiated by Shell Pipeline Corporation. The program's goal was to develop an economical method for proving ethylene orifice meters under actual operating conditions. Shell's ethylene systems are operated in the dense phase fluid region due to lower transportation costs. The ethylene meter stations operate in two regions, the dense-phase fluid and single-phase gas regions.

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" 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

Experimental and modeling results for reconsolidation of crushed natural rock salt under varying physical conditions: Applications to nuclear waste isolation in bedded and domal salt formations  

SciTech Connect

Mined salt from the underground facility at the Waste Isolation Pilot Plant (WIPP) Project is a candidate material for use as backfill around the waste packages and in the underground openings during and after the operational phase. We have conducted a series of hydrostatic and triaxial compression experiments on the time-dependent compaction behavior of crushed salt under nominally dry, damp,'' (0.5-5 wt % added water), and brine-saturated conditions. Though the compaction of dry crushed salt is very slow in the laboratory, damp salt is likely to compact as rapidly as the mine walls can converge. Drained tests on brine-saturated crushed salt indicate that, though effects associated with saturation do retard consolidation rates slightly, high fractional densities ({ge}0.95) can still be obtained on laboratory times scales at pressures below lithostatic at the WIPP. Triaxial compression experiments indicate that small deviatoric stresses have little impact on consolidation rates. Micromechanical models for the compaction of dry and damp crushed salt, based on isostatic hot-pressing models, are discussed. 14 refs., 4 figs.

Zeuch, D.H.; Holcomb, D.J.

1991-01-01T23:59:59.000Z

122

X-ray Spectral Measurements of the Most Massive Stars: Stellar Wind Mass-Loss Rates and Shock Physics  

E-Print Network (OSTI)

X-ray Spectral Measurements of the Most Massive Stars: Stellar Wind Mass-Loss Rates and Shock/Themes: Significant technological advances in X-ray astronomy have driven discovery over the last few decades. New. The priorities at Swarthmore have allowed me to do careful work on the small number of X-ray spectral datasets

Cohen, David

123

Top physics: measurement of the cross section for ttbar production in ppbar collisions using the kinematics of lepton + jets events  

SciTech Connect

We present a measurement of the top pair production cross section in p{bar p} collisions at {radical}s = 1.96 TeV. We collect a data sample with an integrated luminosity of 194 {+-} 11 pb{sup -1} with the CDF II detector at the Fermilab Tevatron. We use an artificial neural network technique to discriminate between top pair production and background processes in a sample of 519 lepton+jets events, which have one isolated energetic charged lepton, large missing transverse energy and at least three energetic jets. We measure the top pair production cross section to be {sigma}{sub t{bar t}} = 6.6 {+-} 1.1 {+-} 1.5 pb, where the first uncertainty is statistical and the second is systematic.

Acosta, D.; The CDF Collaboration

2005-04-27T23:59:59.000Z

124

The physics of computed radiography: Measurements of pulse height spectra of photostimulable phosphor screens using prompt luminescence  

SciTech Connect

Computed radiography (CR) is a digital technology that employs reusable photostimulable phosphor (PSP) imaging plates (IP) to acquire radiographic images. In CR, the x-ray attenuation pattern of the imaged object is temporarily stored as a latent charge image within the PSP. The latent image is optically readout as photostimulated luminescence (PSL) when the phosphor is subsequently stimulated using a scanning laser. The multiple stages necessary to create a CR image make it difficult to investigate either experimentally or theoretically. In order to examine the performance of the CR system at a fundamental level separate measurements of the processes involved are desirable. Here pulse height spectroscopy is used to study the prompt violet light emission or prompt luminescence (PL) from commercial PSP screens. Since the mechanism by which light escapes from the phosphor is identical for PL and PSL, observations and conclusions based on the pulse height spectra (PHS) of PL are relevant to the understanding of the behavior of the PSL light emission that outputs the radiographic image in CR. The PL PHS of screens of different thickness and optical properties were measured and compared with the PHS of conventional phosphors. A new method for calibration of the PHS in terms of the absolute number of optical photons per x-ray is introduced and compared to previously established methods.

Watt, Kristina N.; Yan, Kuo; DeCrescenzo, Giovanni; Rowlands, J. A. [Sunnybrook and Women's College Health Sciences Centre, Department of Medical Biophysics, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5 (Canada)

2005-12-15T23:59:59.000Z

125

Seismic Absorption and Modulus Measurements in Porous Rocks Under Fluid and Gas Flow-Physical and Chemical Effects: a Laboratory Study  

SciTech Connect

This paper describes the culmination of a research project in which we investigated the complex modulus change in partially fluid saturated porous rocks. The investigation started with simple flow experiments over ''clean'' and ''contaminated'' surfaces, progressed to moduli measurements on partially filled single cracks, to measurements in ''clean'' and ''contaminated'' porous rocks and finally to a feasibility study in the field. For the experiments with the simple geometries we were able to measure fundamental physical properties such as contact angles of the meniscus and time dependent forces required to get the meniscus moving and to keep it moving at various velocities. From the data thus gathered we were able to interpret the complex elastic moduli data we measured in the partially saturated single cracks. While the geometry in real rocks is too complex to make precise calculations we determined that we had indeed identified the mechanisms responsible for the changes in the moduli we had measured. Thus encouraged by the laboratory studies we embarked on a field experiment in the desert of Arizona. The field site allowed for controlled irrigation. Instrumentation for fluid sampling and water penetration were already in place. The porous loosely consolidated rocks at the site were not ideal for finding the effects of the attenuation mechanism we had identified in the lab, but for logistic and cost constraint reasons we chose to field test the idea at that site. Tiltmeters and seismometers were installed and operated nearly continuously for almost 3 years. The field was irrigated with water in the fall of 2003 and with water containing a biosurfactant in the fall of 2004. We have indications that the biosurfactant irrigation has had a notable effect on the tilt data.

Harmut Spetzler

2005-11-28T23:59:59.000Z

126

Energy conditions and their implications  

E-Print Network (OSTI)

Energy conditions and their implications Matt Visser Physics Department Washington University Saint;#16;s (Los Alamos) Midwest Relativity 9 November 1999. #12; Abstract: The energy conditions of general- itational #12;elds and cosmological geometries. However, the energy conditions are beginning to look a lot

Visser, Matt

127

Initial Conditions  

Science Journals Connector (OSTI)

Before we can run a transient analysis, we must find the appropriate set of initial conditions for the variables. The most important requirement of initial conditions is that they do not contradict any of the ...

Michael Tiller Ph.D.

2001-01-01T23:59:59.000Z

128

Physical conditions on the early Earth  

Science Journals Connector (OSTI)

...mixing across regions of the solar system, and can also be considered...orthogneisses from northwestern Canada. Contrib. Mineral. Petrol...Cameron, A.G.W 2002Birth of a solar system. Nature. 418, 924-925...evolution of water ice in the solar nebula: implications for solar...

2006-01-01T23:59:59.000Z

129

Kaon physics  

E-Print Network (OSTI)

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

B. Sciascia

2006-10-14T23:59:59.000Z

130

Review of Particle Physics  

Science Journals Connector (OSTI)

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

1998-01-01T23:59:59.000Z

131

DEPARTMENT OF PHYSICS Physics 21900  

E-Print Network (OSTI)

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

Lombardi, John R.

132

DEPARTMENT OF PHYSICS Physics 20300  

E-Print Network (OSTI)

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

Lombardi, John R.

133

Landscape Measures of Rangeland Condition in the BLM Owyhee Pilot Project: Shrub Canopy Mapping, Vegetation Classification, and Detection of Anomalous Land Areas  

SciTech Connect

In 2006, the BLM tasked PNNL to collaborate in research being conducted under the Owyhee Uplands Pilot Project to assess rangeland condition. The objective of this effort was to provide Owyhee Uplands Pilot Project with a sophisticated suite of data and tools to assist in evaluating the health and condition of the Owyhee Uplands study area. We focused on three technical areas. The first involved enhancing existing algorithms to estimate shrub canopy cover in the Lower Reynolds Creek Watershed. The second task involved developing and applying a strategy to assess and compare three vegetation map products for the Idaho portion of the Owyhee study area. The third task developed techniques and data that can be used to identify areas exhibiting anomalous rangeland conditions (for example exotic plants or excessive bare soil exposure). This report documents the methods used, results obtained, and conclusions drawn.

Tagestad, Jerry D.; Downs, Janelle L.

2007-12-28T23:59:59.000Z

134

Range Condition: Key to Sustained Ranch Productivity  

E-Print Network (OSTI)

Range condition, or a rangeland's "state of health," is an ecological measurement of the current condition of a range. Range condition is evaluated by the plant species composition. This leaflet explains the importance of range condition, how range...

McGinty, Allan; White, Larry D.

2000-04-25T23:59:59.000Z

135

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

136

Conditional Similarity Solutions of the Boussinesq Equation  

Science Journals Connector (OSTI)

The direct method proposed by Clarkson and Kruskal is modified to obtain some conditional similarity solutions of a nonlinear physics model. Taking the -dimensional Boussinesq equation as a simple example, six types of conditional similarity reductions are obtained.

Tang Xiao-Yan; Lin Ji; Lou Sen-Yue

2001-01-01T23:59:59.000Z

137

@Why Physics Comprehensive Physics Major.  

E-Print Network (OSTI)

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

Yoo, S. J. Ben

138

Sorption measurements performed under site-specific conditions - Maxey Flats, Kentucky, and West Valley, New York, disposal sites. [Shallow land burial  

SciTech Connect

Sorption coefficients have been determined using site-specific sediments and trench waters, collected from the Maxey Flats, Kentucky, and West Valley, New York, low-level radioactive waste disposal sites. Experimental apparatus and procedures are described to preserve the anoxic character of the liquid phases during experiments. Experiments using anoxic and oxidized trench waters were performed as functions of solution pH, soil/solution ratio, water and soil composition. The lowest sorption was observed with the combination of anoxic waters and untreated soil - the combination most closely resembling the immediate trench environment. For best results in predictive applications, sorption data should be determined under conditions which simulate those in the field as closely as possible. The total radionuclide retention capacity of reducing geochemical environments is the sum of sorption processes on solid phases, as well as precicipation, and coprecipitation reactions involving iron mineral phases (sulfides and oxyhydroxides).

Pietrzak, R.F.; Czyscinski, K.S.; Weiss, A.J.

1981-01-01T23:59:59.000Z

139

DEPARTMENT OF PHYSICS Physics 32300  

E-Print Network (OSTI)

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

Lombardi, John R.

140

DEPARTMENT OF PHYSICS Physics 42200  

E-Print Network (OSTI)

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

Lombardi, John R.

Note: This page contains sample records for the topic "measuring physical conditions" 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

January 2010 Physics 3300  

E-Print Network (OSTI)

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

deYoung, Brad

142

LANL | Physics | Dynamic Plutonium Experiments  

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

Dynamic plutonium experiments Dynamic plutonium experiments Since the end of nuclear testing the nation has had to rely on sophisticated computer models to ensure the safety and reliability of the nuclear weapons stockpile. This program is known as science-based stockpile stewardship. Despite possessing the world's fastest computers and most advanced modeling capability, the behavior of materials under dynamic loads that occur in a nuclear weapon are difficult to accurately model. The Dynamic Plutonium experimental program carries out experiments at the Nevada National Security Site on plutonium driven by high explosives. These experiments are needed to measure and understand the behavior of plutonium under extreme conditions. Physics Division has unique capabilities in high-speed x-ray imaging and velocimetry (measuring the

143

LANL | Physics | High Energy Physics  

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

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

144

Design and Commissioning of a Wind Tunnel for Integrated Physical...  

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

Physical and Chemical Measurements of PM Dispersing Plume of Heavy Duty Diesel Truck Design and Commissioning of a Wind Tunnel for Integrated Physical and Chemical Measurements...

145

Cosmology and New Physics  

E-Print Network (OSTI)

A comparison of the standard models in particle physics and in cosmology demonstrates that they are not compatible, though both are well established. Basics of modern cosmology are briefly reviewed. It is argued that the measurements of the main cosmological parameters are achieved through many independent physical phenomena and this minimizes possible interpretation errors. It is shown that astronomy demands new physics beyond the frameworks of the (minimal) standard model in particle physics. More revolutionary modifications of the basic principles of the theory are also discussed.

A. D. Dolgov

2006-06-21T23:59:59.000Z

146

Enhancing the Material Control & Accounting Measurement System at the State Scientific Center of the Russian Federation - Institute for Physics and Power Engineering named after A.I. Leypunsky  

SciTech Connect

Nuclear material control and accounting (NMCA) system is improving under cooperation with USA national laboratories. Standard reference materials (RMs) and measurement techniques certified at IPPE level are required for: instrument calibration, verification measurements of parameters of items and materials, measurement error estimation, and quality control measurements. We present the main results for development of nuclear RMs for two uranium strata and the results for certification of three measurement techniques (MT) for U-235 mass fraction in uranium and U-235 mass in items. We present the results for developing measurement techniques for Pu-239 in PuO{sub 2}.

Scherer, Carolynn P. [Los Alamos National Laboratory; Bezhunov, Gennady M. [IPPE; Bogdanov, Sergey A. [IPPE; Gorbachev, Vyacheslav M. [IPPE; Ryazanov, Boris G. [IPPE; Talanov, Vladimir V. [IPPE

2012-07-11T23:59:59.000Z

147

Top Physics at ATLAS  

E-Print Network (OSTI)

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

Marcello Barisonzi

2005-08-02T23:59:59.000Z

148

Top 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 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

149

Subsidiary Condition in Quantum Electrodynamics  

Science Journals Connector (OSTI)

The subsidiary condition ?A?(+)?x?|n?=0, usually known as the "Gupta-Bleuler" condition, is shown to be inadequate as a criterion for defining physical states in quantum electrodynamics in the Lorentz gauge. The condition is shown not to be covariant and to fail to define state vectors that remain in the physical subspace. An alternative subsidiary condition, which is satisfactory, is discussed and is shown to require an extensively different formulation of the collision problem in quantum electrodynamics. Some possible physical consequences of the inadequacy of ?A?(+)?x?|n?=0 are proposed; these include effects in the decays of short-lived particles, and the fact that in some types of strong interactions, acting simultaneously with electromagnetic ones, S-matrix elements may occur which predict transitions from the physical space into the part of space in which the subsidiary condition is violated. The solution to the collision problem for stable charged particles that have only electromagnetic interactions is shown to be identical to that obtainable from the present theory.

Kurt Haller and Leon F. Landovitz

1968-07-25T23:59:59.000Z

150

DEPARTMENT OF PHYSICS Physics 35400  

E-Print Network (OSTI)

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

Lombardi, John R.

151

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

152

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

153

arXiv:0908.1824v2[physics.comp-ph]24Feb2010 The calculation of longitude and latitude from geodesic measurements  

E-Print Network (OSTI)

arXiv:0908.1824v2[physics.comp-ph]24Feb2010 The calculation of longitude and latitude from geodesic, 2009; revised: February 24, 2010) 1. INTRODUCTION Consider a geodesic line between two points A and B by deriving the fundamental properties of geodesic lines on a spheroid of revolution. Even though aspects

Karney, Charles

154

THE JOURNAL OF CHEMICAL PHYSICS VOLUME 57, NUMBER 3 1 AUGUST 1972 Laser-Induced Fluorescence: A Method to Measure the Internal State Distribution of  

E-Print Network (OSTI)

THE JOURNAL OF CHEMICAL PHYSICS VOLUME 57, NUMBER 3 1 AUGUST 1972 Laser-Induced Fluorescence a pulsed (2-10 nsec duration), tunable dye laser3 passes through the reaction zone. As the wave- length 20 nsec the opening of the electronic gate. The BaO fluorescence rate versus laser wavelength

Zare, Richard N.

155

Top Physics at the LHC  

E-Print Network (OSTI)

Top quark physics will be a prominent topic in Standard Model physics at the LHC. The enormous amount of top quarks expected to be produced will allow to perform a wide range of precision measurements. An overview of the planned top physics programme of the ATLAS and CMS experiments at the LHC is given.

Christian Weiser

2005-06-10T23:59:59.000Z

156

PHYSICAL OCEANOGRAPHY OF THE TEST AREA  

Science Journals Connector (OSTI)

PHYSICAL OCEANOGRAPHY OF TIIE TEST AREA. PAUL L. HORRER. PROCEDURE. Current Measurements. Methods of determining currents arc varied.

1999-12-23T23:59:59.000Z

157

Planetary Physics  

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

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

158

The Axiomatisation of Physics  

E-Print Network (OSTI)

Analysing Quantum Measurement requires analysing the physics of amplification since amplification of phenomena from one scale to another scale is essential to measurement. There still remains the task of working this into an axiomatic logical structure, what should be the foundational status of the concepts of measurement and probability. We argue that the concept of physical probability is a multi-scale phenomenon and as such, can be explicitly defined in terms of more fundamental physical concepts. Thus Quantum Mechanics can be given a logically unexceptionable axiomatisation. We introduce a new definition of macroscopic observable which implements Bohr's insight that the observables of a measurement apparatus are classical in nature. In particular, we obtain the usual non-abelian observables as limits of abelian, classical, observables. This is the essential step in Hilbert's Sixth Problem.

Joseph F. Johnson

2007-05-17T23:59:59.000Z

159

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

160

Conditioning circuit for temperature and strain measurement  

E-Print Network (OSTI)

be written as [4]; V. C, C?+Cz 1? Vying Ci ( Czd (3. 4) where V, ?: (Vj Vj ) (Vz Vj ). 26 Table I. Transistor aspect ratios for the CMOS switch Transistor Label Transistor Dimension (W:L) (p) Ml-M2 3:2 The gain error is thus seen to be proportional... value and form a volLage divider to drive node A, the gates of transistors Mll and VI12. A change Table II. Transistor aspect ratios for the DCMFB circuit Transistor Label Transistor Dimension (W:L) (p) Ml-M2 20:6 M3-M4 20:2 M5-M6 10:2 M7-M8 M...

Patel, Aashit Mahendra

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" 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

Journal of the Korean Physical Society, Vol. 55, No. 4, October 2009, pp. 13891393 Measurements of the Neutron Scattering Spectrum from 238  

E-Print Network (OSTI)

of the Neutron Scattering Spectrum from 238 U and Comparison of the Results with a Calculation at the 36.68-e, in final form 22 July 2009) Neutrons elastically scattered from 238 U were measured in the neutron energy neutrons were measured at 25.5 m from the U sample by using a 6 Li detector, and the scattering direction

Danon, Yaron

162

Theoretical uncertainty of orifice flow measurement  

SciTech Connect

Orifice meters are the most common meters used for fluid flow measurement, especially for measuring hydrocarbons. Meters are rugged, mechanically simple, and well suited for field use under extreme weather conditions. Because of their long history of use and dominance in the fluid flow measurement, their designs, installation requirements, and equations for flow rate calculation have been standardized by different organizations in the United States and internationally. These standards provide the guideline for the users to achieve accurate flow measurement. and minimize measurement uncertainty. This paper discusses different factors that contribute to the measurement inaccuracy and provide an awareness to minimize or eliminate these errors. Many factors which influence the overall measurement uncertainty are associated with the orifice meter application. Major contributors to measurement uncertainty include the predictability of flow profile, fluid properties at flowing condition, precision of empirical equation for discharge coefficient, manufacturing tolerances in meter components, and the uncertainty associated with secondary devices monitoring the static line pressure, differential pressure across the orifice plate, flowing temperature, etc. Major factors contributing to the measurement uncertainty for a thin, concentric, square-edged orifice flowmeter are as follows: (a) Tolerances in prediction of coefficient of discharge, (b) Predictability in defining the physical properties of the flowing fluid, (c) Fluid flow condition, (d) Construction tolerances in meter components, (e) Uncertainty of secondary devices/instrumentation, and (f) Data reduction and computation. Different factors under each of the above areas are discussed with precautionary measures and installation procedures to minimize or eliminate measurement uncertainty.

Husain, Z.D. [Daniel Flow Products, Inc., Houston, TX (United States)

1995-12-01T23:59:59.000Z

163

INSTITUTE OF PHYSICS PUBLISHING MEASUREMENT SCIENCE AND TECHNOLOGY Meas. Sci. Technol. 17 (2006) 25192526 doi:10.1088/0957-0233/17/9/020  

E-Print Network (OSTI)

pressure (equation (12)) pPitot stagnation pressure from Pitot tube ptap static pressure of calibration of temperature and velocity. Its development was motivated by HVAC (heating, ventilation and air conditioning of wire (equation (3)) L wire length (equation (3)) m mass of wire (equation (2)) patm atmospheric static

Foss, John

164

Extremality conditions for generalized channels  

E-Print Network (OSTI)

A generalized channel is a completely positive map that preserves trace on a given subspace. We find conditions under which a generalized channel with respect to a positively generated subspace J is an extreme point in the set of all such generalized channels. As a special case, this yields extremality conditions for quantum protocols. In particular, we obtain new extremality conditions for quantum 1-testers with 2 outcomes, which correspond to yes/no measurements on the set of quantum channels.

Anna Jencova

2012-04-12T23:59:59.000Z

165

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,

166

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

167

Aerosol Radiative Forcing Under Cloudless Conditions.in Winter ZCAREX-2001  

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

Forcing Under Cloudless Conditions Forcing Under Cloudless Conditions in Winter ZCAREX-2001 G. S. Golitsyn, I. A. Gorchakova, and I. I. Mokhov Institute of Atmospheric Physic Moscow, Russia Introduction Aerosol radiative forcing (ARF) is estimated for winter clear-sky conditions from measurements during ZCAREX-2001-Cloud-Aerosol-Radiation Experiment in February-March, 2001 at the Zvenigorod Scientific Station (ZSS) of the A.M. Obukhov Institute of Atmospheric Physics RAS. ARF in the shortwave range is determined by the difference between the net fluxes of the solar radiation, calculated with and without the aerosol component of the atmosphere. The estimates of ARF are made for conditions with high surface albedo. Data Used The following data of atmospheric characteristics observed during winter are used for the

168

Ionization interferences under various operating conditions in a 9, 27 and 50 \\{MHz\\} ICP, and a study of shifts in level populations of calcium through simultaneous absorption-emission measurements in a 9 \\{MHz\\} ICP  

Science Journals Connector (OSTI)

Radially resolved absorption and emission measurements were employed for a better understanding of the excitation mechanism of nebulized species operating under conditions favourable for the occurrence of ionization interferences in an atmospheric pressure 9 \\{MHz\\} ICP. Three monitored spectral lines of calcium were used to observe changes in ground and excited level populations of atoms and ions, in ion excitation temperatures using the two-line method. Observations were made at a fixed height, namely 25 mm above the rf coil and varying carrier gasflows from 2 to 51 min?1 and were correlated with the position of the initial radiation zone (IRZ) in the plasma. Ionization interferences occurring only inside the IRZ indicate an excitation mechanism depleting ion ground level population and populating excited atom and ion levels. No changes in atom absorbances or excitation temperatures were observed ruling out ionization suppression as dominating mechanism. Indications are that increased collisional excitation for Ca ions and ambipolar diffusion may be the dominant excitation mechanism operating in the analyte channel. Recombination reactions (three body or radiative) or charge transfer reactions may be responsible for an increase of excited atom level populations. It is obvious that non-thermal processes are operating under conditions favourable for ionization interferences occurring in the ICP.

W. Gunter; K. Visser; P.B. Zeeman

1985-01-01T23:59:59.000Z

169

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

170

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

E-Print Network (OSTI)

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

Gary Christopher Vezzoli

2001-04-04T23:59:59.000Z

171

CRITICAL CONFIGURATION AND PHYSICS MEASUREMENTS FOR BERYLLIUM REFLECTED ASSEMBLIES OF U(93.15)O2 FUEL RODS (1.506-CM PITCH AND 7-TUBE CLUSTERS)  

SciTech Connect

Cadmium ratios were measured with enriched uranium metal foils at various locations in the assembly with the fuel tube at the 1.506-cm spacing. They are described in the following subsections. The experiment configuration was the same as the first critical configuration described in HEU-COMP-FAST-004 (Case 1). The experimenter placed 0.75-cm-diameter 0.010-cm-thick 93.15%-235U-enriched uranium metal foils with and without 0.051-cm-thick cadmium covers at various locations in the core and top reflector. One part of the cadmium cover was cupshape and contained the uranium foil. The other part was a lid that fit over the exposed side of the foil when it was in the cup shaped section of the cover. As can be seen in the logbook, two runs were required to obtain all the measurements necessary for the cadmium ratio. The bare foil measurements within the top reflector were run first as part of the axial foil activation measurements. The results of this run are used for both the axial activation results and the cadmium ratios. Cadmium covered foils were then placed at the same location through the top reflector in a different run. Three pairs of bare and cadmium covered foils were also placed through the core tank. One pair was placed at the axial center of a fuel tube 11.35 cm from the center of the core. Two pairs of foils were placed on top of fuel tubes 3.02 and 12.06 cm from the center of the core. The activation of the uranium metal foils was measured after removal from the assembly using two lead shielded NaI scintillation detectors as follows. The NaI scintillators were carefully matched and had detection efficiencies for counting delayed-fission-product gamma rays with energies above 250 KeV within 5%. In all foil activation measurements, one foil at a specific location was used as a normalizing foil to remove the effects of the decay of fission products during the counting measurements with the NaI detectors. The normalization foil was placed on one NaI scintillator and the other foil on the other NaI detector and the activities measured simultaneously. The activation of a particular foil was compared to that of the normalization foil by dividing the count rate for each foil by that of the normalization foil. To correct for the differing efficiencies of the two NaI detectors, the normalization foil was counted in Detector 1 simultaneously with the foil at position x in Detector 2, and then the normalization foil was counted simultaneously in Detector 2 with the foil from position x in Counter 1. The activity of the foil from position x was divided by the activity of the normalization foil counted simultaneously. This resulted in obtaining two values of the ratio that were then averaged. This procedure essentially removed the effect of the differing efficiencies of the two NaI detectors. Differing efficiencies of 10% resulted in errors in the ratios measured to less than 1%. The background counting rates obatined with the foils used for the measurements on the NaI detectors before their irradiation measurement were subtracted from all count rates. The results of the cadmium ratio measurements are given in Table 1.3-1 and Figure 1.3-1. No correction has been made for self shielding in the foils (Reference 3).

Margaret A. Marshall

2014-03-01T23:59:59.000Z

172

Physics Fellow  

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

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

173

Re-Entry Condition for Ferromagnetic Superconductors  

E-Print Network (OSTI)

PHYSICAL REVIE% 8 I JANUARY 1984 Re-entry condition for ferromagnetic superconductors C. G. Kuper, M. Revzen, and A. Ron, Department of Physics, Technion-Israel Institute of Technology, Haifa 32000, Israel C.-R. Hu, Department of Physics, Texas... 3 d'c M University, College Station, Texas 77843 (Received 10 June 1982; revised manuscript received 27 December 1982) In the phenomenological theory of re-entrant superconductors, the ratio ( of the magnetic to supercon- ducting free...

KUPER, CG; REVZEN, M.; RON, A.; Hu, Chia-Ren.

1984-01-01T23:59:59.000Z

174

Effect of communicating genetic and phenotypic risk for type 2 diabetes in combination with lifestyle advice on objectively measured physical activity: protocol of a randomised controlled trial  

E-Print Network (OSTI)

, Schulze MB: Risk assessment tools for identifying individuals at risk of developing type 2 diabetes. Epidemiologic Rev 2011, 33:4662. 18. Noble D, Mathur R, Dent T, Meads C, Greenhalgh T: Risk models and scores for type 2 diabetes: systematic review. Br... of communicating personalized genetic risk information on perceived control over the risk: a systematic review. Genet Med 2011, 13:273. 26. Bates BR, Templeton A, Achter PJ, Harris TM, Condit CM: What does "a gene for heart disease" mean? A focus group study...

Godino, Job G; van Sluijs, Esther MF; Marteau, Theresa M; Sutton, Stephen; Sharp, Stephen J; Griffin, Simon J

2012-06-18T23:59:59.000Z

175

Physical protection philosophy and techniques in Sweden  

SciTech Connect

The circumstances for the protection of nuclear power plants are special in Sweden. A very important factor is that armed guards at the facilities are alien to the Swedish society. They do not use them. The Swedish concept of physical protection accepts that the aggressor will get into the facility. With this in mind, the Swedish Nuclear Power Inspectorate (SKI) has established the policy that administrative, technical, and organizational measures will be directed toward preventing an aggressor from damaging the reactor, even if he has occupied the facility. In addition, the best conditions possible shall be established for the operator and the police to reoccupy the plant. The author believes this policy is different from that of many other countries. Therefore, he focusses on the Swedish philosophy and techniques for the physical protection of nuclear power plants.

Dufva, B.

1988-01-01T23:59:59.000Z

176

Density measurements Viscosity measurements  

E-Print Network (OSTI)

Density measurements Viscosity measurements Temperature measurements Pressure measurements Flow rate measurements Velocity measurements Sensors How to measure fluid flow properties ? Am´elie Danlos Ravelet Experimental methods for fluid flows: an introduction #12;Density measurements Viscosity

Ravelet, Florent

177

Physics with first LHCb data  

E-Print Network (OSTI)

The LHCb experiment is designed for hadronic flavour physics and will look for New Physics manifestations in the decay of charm and bottom hadrons abundantly produced at the LHC. All parts of the LHCb physics programme can be embarked on with the expected statistics to be collected during the first 2010-2011 physics run at $\\sqrt{s}$ = 7 TeV. We present first preliminary results on strangeness production, and demonstrate, using the few nb-1 of already collected data, the potential for initial measurements in heavy-flavour physics.

Olivier Schneider

2010-10-09T23:59:59.000Z

178

Electroweak Physics at the ILC  

E-Print Network (OSTI)

Some aspects of electroweak physics at the International Linear Collider (ILC) are reviewed. The importance of precision measurements in the Higgs sector and in top-quark physics is emphasized, and the physics potential of the GigaZ option of the ILC is discussed. It is shown in particular that even in a scenario where the states of new physics are so heavy that they would be outside of the reach of the LHC and the first phase of the ILC, the GigaZ precision on the effective weak mixing angle may nevertheless allow the detection of quantum effects of new physics.

Georg Weiglein

2007-11-19T23:59:59.000Z

179

Credit Conditions and Stock Return Predictability  

E-Print Network (OSTI)

This dissertation examines stock return predictability with aggregate credit conditions. The aggregate credit conditions are empirically measured by credit standards (Standards) derived from the Federal Reserve Board's Senior Loan Officer Opinion...

Park, Heungju

2012-10-19T23:59:59.000Z

180

Flavor Physics and CP Violation at LHC  

E-Print Network (OSTI)

Flavor Physics at LHC will contribute significantly to the search for New Physics via precise and complementary measurements of CKM angles and the study of loop decays. Here we present the expected experimental sensitivity and physics performance of the LHC experiments that will to B-physics.

Andreas Schopper

2006-05-29T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" 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

Conditions for successful data assimilation  

E-Print Network (OSTI)

We show, using idealized models, that numerical data assimilation can be successful only if an effective dimension of the problem is not excessive. This effective dimension depends on the noise in the model and the data, and in physically reasonable problems it can be moderate even when the number of variables is huge. We then analyze several data assimilation algorithms, including particle filters and variational methods. We show that well-designed particle filters can solve most of those data assimilation problems that can be solved in principle, and compare the conditions under which variational methods can succeed to the conditions required of particle filters. We also discuss the limitations of our analysis.

Alexandre J. Chorin; Matthias Morzfeld

2014-10-22T23:59:59.000Z

182

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)

183

Jet and Photon Physics  

E-Print Network (OSTI)

Jet production in proton-proton collisions is one of the main phenomenological predictions of QCD. The ATLAS and CMS Collaborations have performed measurements of several jet observables at the LHC and compared their results to theoretical predictions and event generators. Useful physics input for the determination of the parton distribution functions and the strong coupling constant is provided. Photon production measurements represent another important test of QCD and show strong sensitivity to higher-order corrections.

Peruzzi, Marco

2014-01-01T23:59:59.000Z

184

Jet and photon physics  

E-Print Network (OSTI)

Jet production in proton-proton collisions is one of the main phenomenological predictions of QCD. The ATLAS and CMS Collaborations have performed measurements of several jet observables at the LHC and compared their results to theoretical predictions and event generators. Useful physics input for the determination of the parton distribution functions and the strong coupling constant is provided. Photon production measurements represent another important test of QCD and show strong sensitivity to higher-order corrections.

Marco Peruzzi; for the ATLAS; CMS Collaborations

2014-09-30T23:59:59.000Z

185

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

186

ARM - Measurement - Cloud size  

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

to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud size Information about the physical dimensions of a cloud, including such measurements...

187

Green's functions for Neumann boundary conditions  

E-Print Network (OSTI)

Green's functions for Neumann boundary conditions have been considered in Math Physics and Electromagnetism textbooks, but special constraints and other properties required for Neumann boundary conditions have generally not been noticed or treated correctly. In this paper, we derive an appropriate Neumann Green's function with these constraints and properties incorporated.

Jerrold Franklin

2012-01-29T23:59:59.000Z

188

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

189

A Primer on Energy Conditions  

E-Print Network (OSTI)

An energy condition, in the context of a wide class of spacetime theories (including general relativity), is, crudely speaking, a relation one demands the stress-energy tensor of matter satisfy in order to try to capture the idea that "energy should be positive". The remarkable fact I will discuss in this paper is that such simple, general, almost trivial seeming propositions have profound and far-reaching import for our understanding of the structure of relativistic spacetimes. It is therefore especially surprising when one also learns that we have no clear understanding of the nature of these conditions, what theoretical status they have with respect to fundamental physics, what epistemic status they may have, when we should and should not expect them to be satisfied, and even in many cases how they and their consequences should be interpreted physically. Or so I shall argue, by a detailed analysis of the technical and conceptual character of all the standard conditions used in physics today, including exam...

Curiel, Erik

2014-01-01T23:59:59.000Z

190

EMSL - physics  

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

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

191

Flavor Physics  

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

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

192

Physical Scientist  

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

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

193

Physical Scientist  

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

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

194

Subsidiary Conditions in Covariant Theories  

Science Journals Connector (OSTI)

We have investigated the effect that coordinate conditions and similar conditions will have on the formal properties of covariant theories. Two distinct types of coordinate conditions were included, those involving first derivatives of the field variables (such as the gauge condition of Lorentz and the coordinate conditions of De Donder) and those algebraic in the field variables (of which the Coulomb gauge is an example).We have found that with either type of coordinate condition we can construct a variational principle, or a Hamiltonian formalism, which leads to physically meaningful field equations if associated with appropriate initial conditions on a space-like hypersurface. Thus the existence of a properly set Cauchy problem is always assured.It had been found previously that the infinitesimal invariant transformations of covariant theories form a group and that the coordinate (and similar) transformations represent a normal subgroup. The members of the resulting factor group are in one-to-one correspondence with the true observables of the theory, those dynamical variables which alone possess intrinsic significance without reference to a particular frame of description and whose commutator algebra is presumably reflected in the commutators of the corresponding Hilbert operators of the quantized theory. In this paper we have established the appropriate transformation groups (and their subgroups and factor groups) of a theory with either type of coordinate conditions. We have found that in any of these versions the theory will yield the same observables with the same commutator algebra. One may therefore hope that a quantization scheme based on a theory with subsidiary conditions will be free of the arbitrariness involved in the choice of particular conditions.

Peter G. Bergmann and Allen I. Janis

1958-08-15T23:59:59.000Z

195

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

196

Seismic Absorption and Modulus Measurements in Porous Rocks in Lab and Field: Physical, Chemical, and Biological Effects of Fluids (Detecting a Biosurfactant Additive in a Field Irrigation Experiment)  

SciTech Connect

We have been exploring a new technology that is based on using low-frequency seismic attenuation data to monitor changes in fluid saturation conditions in two-fluid phase porous materials. The seismic attenuation mechanism is related to the loss of energy due to the hysteresis of resistance to meniscus movement (changes in surface tension, wettability) when a pore containing two fluids is stressed at very low frequencies (< 10 Hz). This technology has potential applications to monitoring changes in (1) leakage at buried waste sites, (2) contaminant remediation, and (3) flooding during enhanced petroleum recovery. We have concluded a three year field study at the Maricopa Agricultural Center site of the University of Arizona. Three sets of instruments were installed along an East-West line perpendicular to the 50m by 50m inigation site. Each set of instruments consisted of one three component seismometer and one tiltmeter. Microseisms and solid Earth-tides served as strain sources. The former have a power peak at a period of about 6 seconds and the tides have about two cycles per day. Installation of instruments commenced in late summer of 2002. The instruments operated nearly continuously until April 2005. During the fall of 2003 the site was irrigated with water and one year later with water containing 150 ppm of a biosurfactant additive. This biodegradable additive served to mimic a class of contaminants that change the surface tension of the inigation fluid. Tilt data clearly show tidal tilts superimposed on local tilts due to agricultural irrigation and field work. When the observed signals were correlated with site specific theoretical tilt signals we saw no anomalies for the water irrigation in 2003, but large anomalies on two stations for the surfactant irrigation in 2004. Occasional failures of seismometers as well as data acquisition systems contributed to less than continuous coverage. These data are noisier than the tilt data, but do also show possible anomalies for the irrigation with the surfactant. The quantity of data is large and deserves careful analysis. Detailed analyses of the two data sets are ongoing.

Spetzler, Hartmut

2006-05-01T23:59:59.000Z

197

REVIEW OF PARTICLE PHYSICS  

E-Print Network (OSTI)

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

Beringer, Juerg

2013-01-01T23:59:59.000Z

198

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

199

Joint measurability, steering and entropic uncertainty  

E-Print Network (OSTI)

The notion of incompatibility of measurements in quantum theory is in stark contrast with the corresponding classical perspective, where all physical observables are jointly measurable. It is of interest to examine if the results of two or more measurements in the quantum scenario can be perceived from a classical point of view or they still exhibit non-classical features. Clearly, commuting observables can be measured jointly using projective measurements and their statistical outcomes can be discerned classically. However, such simple minded association of compatibility of measurements with commutativity turns out to be limited in an extended framework, where the usual notion of sharp projective valued measurements of self adjoint observables gets broadened to include unsharp measurements of generalized observables constituting positive operator valued measures (POVM). There is a surge of research activity recently towards gaining new physical insights on the emergence of classical behavior via joint measurability of unsharp observables. Here, we explore the entropic uncertainty relation for a pair of discrete observables (of Alice's system) when an entangled quantum memory of Bob is restricted to record outcomes of jointly measurable POVMs only. Within the joint measurability regime, the sum of entropies associated with Alice's measurement outcomes - conditioned by the results registered at Bob's end - are constrained to obey an entropic steering inequality. In this case, Bob's non-steerability reflects itself as his inability in predicting the outcomes of Alice's pair of non-commuting observables with better precision, even when they share an entangled state. As a further consequence, the quantum advantage envisaged for the construction of security proofs in key distribution is lost, when Bob's measurements are restricted to the joint measurability regime.

H. S. Karthik; A. R. Usha Devi; A. K. Rajagopal

2014-10-05T23:59:59.000Z

200

The Physical Environment and Occupant Thermal Perceptions in Office  

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

The Physical Environment and Occupant Thermal Perceptions in Office The Physical Environment and Occupant Thermal Perceptions in Office Buildings: An Evaluation of Sampled Data from Five European Countries Speaker(s): John Stoops Date: January 3, 2001 - 12:00pm Location: Bldg 90 Seminar Host/Point of Contact: Diana Morris The results from a large field study of thermal comfort in European office buildings are reported. Measurements of physical environmental conditions and occupant perceptions were collected over sixteen months from twenty-six different office buildings located in France, Greece, Portugal, Sweden and the UK. The work attempts to show relationships and produce useful information from the data set using graphical methods, especially lowess, a locally weighted regression based scatter plot smoothing technique. The

Note: This page contains sample records for the topic "measuring physical conditions" 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

Wall conditioning and power balance for spheromak plasmas in SSPX  

Science Journals Connector (OSTI)

We report here results from power balance measurements for ohmically heated plasmas in the sustained spheromak physics experiment. The plasma is formed inside a close-fitting tungsten-coated copper shell; wall conditioning by baking, glow discharge cleaning (GDC), Ti gettering, and helium shot conditioning produces clean plasmas (Zeff<2.5) and reduces impurity radiation to a small fraction of the input energy, except when the molybdenum divertor plate has been overheated. We find that most of the input energy is lost by conduction to the walls (the divertor plate and the inner electrode in the coaxial source region). Recently, carborane was added during GDC to boronize the plasma-facing surfaces, but little benefit was obtained.

D.N. Hill; R.D. Wood; R. Bulmer; H.S. McLean; D. Ryutov; B.W. Stallard; S. Woodruff

2003-01-01T23:59:59.000Z

202

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network (OSTI)

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

Low, Robert

203

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network (OSTI)

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

Low, Robert

204

PHYSICS CURRICULUM PH 101: Introductory Physics I -Mechanics, oscillations and waves (2:1)  

E-Print Network (OSTI)

PHYSICS CURRICULUM Semester 1 PH 101: Introductory Physics I - Mechanics, oscillations and waves (2:1) Physical quantities, measurements and vectors, Kinematics: Description of Motion, The Laws of Motion mechanics, Fluid mechanics, Waves-II, Nonlinear dynamics Semester 2 PH 102: Introductory Physics II

Srinivasan, N.

205

Status of Charm Flavor Physics  

E-Print Network (OSTI)

The role of charm in testing the Standard Model description of quark mixing and CP violation through measurements of lifetimes, decay constants and semileptonic form factors is reviewed. Together with Lattice QCD, charm has the potential this decade to maximize the sensitivity of the entire flavor physics program to new physics. and pave the way for understanding physics beyond the Standard Model at the LHC in the coming decade. The status of indirect searches for physics beyond the Standard Model through charm mixing, CP-violation and rare decays is also reported.

I. Shipsey

2006-07-26T23:59:59.000Z

206

New Physics Search at LHCB  

E-Print Network (OSTI)

Although direct detection of new particles will be the main focus of the LHC, indirect New Physics searches are expected to provide useful complementary information. In particular, precision measurements of rare processes occurring in flavour physics are of utmost importance in constraining the structure of the New physics low energy effective Lagrangian. In this paper, few key LHCb studies, including $B_s-\\bar{B}_s$ mixing and rare decays through the quark level $b\\to s$ loop transition, are presented to illustrate New Physics effects at low energy.

A. Hicheur

2008-05-16T23:59:59.000Z

207

Lectures on LHC Physics  

E-Print Network (OSTI)

With the discovery of the Higgs boson the LHC experiments have closed the most important gap in our understanding of fundamental interactions. We now know that the interactions between elementary particles can be described by quantum field theory, more specifically by a renormalizable gauge theory. This theory is valid to arbitrarily high energy scales and do not require an ultraviolet completion. In these notes I cover three aspects to help understand LHC results in the Higgs sector and in searches for physics beyond the Standard Model: many facets of Higgs physics, QCD as it is relevant for LHC measurements, and standard phenomenological background knowledge. The lectures should put young graduate students into a position to really follow advanced writeups and first research papers. In that sense they can serve as a starting point for a research project in LHC physics. With this new, significantly expanded version I am confident that also some more senior colleagues will find them useful and interesting.

Tilman Plehn

2014-02-17T23:59:59.000Z

208

The Extreme Physics Explorer  

E-Print Network (OSTI)

Some tests of fundamental physics - the equation of state at supra-nuclear densities, the metric in strong gravity, the effect of magnetic fields above the quantum critical value - can only be measured using compact astrophysical objects: neutron stars and black holes. The Extreme Physics Explorer is a modest sized (~500 kg) mission that would carry a high resolution (R ~300) X-ray spectrometer and a sensitive X-ray polarimeter, both with high time resolution (~5 ?s) capability, at the focus of a large area (~5 sq.m), low resolution (HPD~1 arcmin) X-ray mirror. This instrumentation would enable new classes of tests of fundamental physics using neutron stars and black holes as cosmic laboratories.

Martin Elvis

2006-08-25T23:59:59.000Z

209

Physical Protection  

Directives, Delegations, and Requirements

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

2009-07-23T23:59:59.000Z

210

Physics Handbook  

Science Journals Connector (OSTI)

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

S. WEINTROUB

1968-10-19T23:59:59.000Z

211

Theoretical Nuclear Physics - Research - Cyclotron Institute  

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

Theoretical Nuclear Physics By addressing this elastic scattering indirect technique, we hope that more accurate measurements of elastic scattering data will provide very important...

212

Top physics at CDF  

SciTech Connect

We report on top physics results using a 100 pb{sup -1} data sample of p{bar p} collisions at {radical}s = 1.8 TeV collected with the Collider Detector at Fermilab (CDF). We have identified top signals in a variety of decay channels, and used these channels to extract a measurement of the top mass and production cross section. A subset of the data (67 pb{sup -1}) is used to determine M{sub top} = 176 {+-} 8(stat) {+-} 10(syst) and {sigma}(tt) = 7.6 {sub -2.0}{sup +2.4} pb. We present studies of the kinematics of t{bar t} events and extract the first direct measurement of V{sub tb}. Finally, we indicate prospects for future study of top physics at the Tevatron.

Hughes, R.E. [Univ. of Rochester, NY (United States)

1997-01-01T23:59:59.000Z

213

An active wave generatingabsorbing boundary condition for VOF type numerical model  

Science Journals Connector (OSTI)

The objective of the present work is to discuss the implementation of an active wave generatingabsorbing boundary condition for a numerical model based on the Volume Of Fluid (VOF) method for tracking free surfaces. First an overview of the development of VOF type models with special emphasis in the field of coastal engineering is given. A new type of numerical boundary condition for combined wave generation and absorption in the numerical model \\{VOFbreak2\\} is presented. The numerical boundary condition is based on an active wave absorption system that was first developed in the context of physical wave flume experiments, using a wave paddle. The method applies to regular and irregular waves. Velocities are measured at one location inside the computational domain. The reflected wave train is separated from the incident wave field in front of a structure by means of digital filtering and subsequent superposition of the measured velocity signals. The incident wave signal is corrected, so that the reflected wave is effectively absorbed at the boundary. The digital filters are derived theoretically and their practical design is discussed. The practical use of this numerical boundary condition is compared to the use of the absorption system in a physical wave flume. The effectiveness of the active wave generatingabsorbing boundary condition finally is proved using analytical tests and numerical simulations with VOFbreak2.

Peter Troch; Julien De Rouck

1999-01-01T23:59:59.000Z

214

Experiments in Physics Physics 1291  

E-Print Network (OSTI)

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

Columbia University

215

Experiments in Physics Physics 1291  

E-Print Network (OSTI)

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

Columbia University

216

Experiments in Physics Physics 1291  

E-Print Network (OSTI)

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

Columbia University

217

Of Physics & Astronomy. MEDICAL PHYSICS  

E-Print Network (OSTI)

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

Crowther, Paul

218

Physics Needs for Future Accelerators  

E-Print Network (OSTI)

Contents: 1. Prologomena to any meta future physics 1.1 Physics needs for building future accelerators 1.2 Physics needs for funding future accelerators 2. Physics questions for future accelerators 2.1 Crimes and misapprehensions 2.1.1 Organized religion 2.1.2 Feudalism 2.1.3 Trotsky was right 2.2 The Standard Model as an effective field theory 2.3 What is the scale of new physics? 2.4 What could be out there? 2.5 Model-independent conclusions 3. Future accelerators 3.1 What is the physics driving the LHC? 3.2 What is the physics driving the LC? 3.2.1 Higgs physics is golden 3.2.2 LHC won't be sufficient to unravel the new physics as the TeV scale 3.2.3 LC precision measurements can pin down new physics scales 3.3 Why a Neutrino Factory? 3.4 Pushing the energy frontier

Joseph D. Lykken

2000-01-30T23:59:59.000Z

219

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

220

Physical Protection  

Directives, Delegations, and Requirements

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

2005-08-26T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" 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

Physical Protection  

Directives, Delegations, and Requirements

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

2005-08-26T23:59:59.000Z

222

Review of Particle Physics  

Science Journals Connector (OSTI)

This biennial review summarizes much of Particle Physics. Using data from previous editions, plus 1900 new measurements from 700 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review.

R. M. Barnett et al.

1996-07-01T23:59:59.000Z

223

Measuring Physical Properties of Polymer Electrolyte Membranes  

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

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

224

Validating Energy Measures  

E-Print Network (OSTI)

Energy measurements play a very important role in a detailed energy analysis. The role is more important in industrial processes where wide variations of process conditions exist. Valid energy measurements make the decision making process easier...

Chari, S.; Thomas, D.

225

Physics and Astronomy Engineering/Physics Concentration  

E-Print Network (OSTI)

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

Thaxton, Christopher S.

226

Physics and Astronomy Radiation Safety Physics Concentration  

E-Print Network (OSTI)

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

Thaxton, Christopher S.

227

PHYSICS OF BURNING PHYSICS INACCESSIBLE TO  

E-Print Network (OSTI)

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

228

Department of Physics Department of Physics  

E-Print Network (OSTI)

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

Heller, Barbara

229

314 Department of Physics Department of Physics  

E-Print Network (OSTI)

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

Nagle, John F.

230

Physics (Phys) (Department of Physics and Engineering)  

E-Print Network (OSTI)

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

Dresden, Gregory

231

Department of Physics Department of Physics  

E-Print Network (OSTI)

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

Heller, Barbara

232

Solitons induced by boundary conditions  

SciTech Connect

Although soliton phenomena have attracted wide attention since 1965, there are still not enough efforts paid to mixed-boundary - initial-value problems that are important in real physical cases. The main purpose of this thesis is to study carefully the various boundary-induced soliton under different initial conditions. The author states with three sets of nonlinear equations: KdV equations and Boussinesq equations (for water); two-fluid equations for cold-ion plasma. He was interested in four types of problems involved with water solitons: excitation by different time-dependent boundary conditions under different initial conditions; head-on and over-taking collisions; reflection at a wall and the excitation by pure initial conditions. For KdV equations, only cases one and four are conducted. The results from two fully nonlinear KdV and Boussinesq equations are compared, and agree extremely well. The Boussinesq equations permit solition head-on collisions and reflections, studied the first time. The results from take-over collision agree with KdV results. For the ion-acoustic plasma, a set of Boussinesq-type equations was derived from the standard two-fluid equations for the ion-acoustic plasma. It theoretically proves the essential nature of the solitary wave solutions of the cold-ion plasma. The ion acoustic solitons are also obtained by prescribing a potential phi/sub 0/ at one grid point.

Zhou, R.L.

1987-01-01T23:59:59.000Z

233

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

234

Metallicity and Physical Conditions in the Magellanic Bridge  

E-Print Network (OSTI)

We present a new analysis of the diffuse gas in the Magellanic Bridge (RA>3h) based on HST/STIS E140M and FUSE spectra of 2 early-type stars lying within the Bridge and a QSO behind it. We derive the column densities of HI (from Ly\\alpha), NI, OI, ArI, SiII, SII, and FeII of the gas in the Bridge. Using the atomic species, we determine the first gas-phase metallicity of the Magellanic Bridge, [Z/H]=-1.02+/-0.07 toward one sightline, and -1.7H]Bridge gas along our three lines of sight is ~70-90% ionized, despite high HI columns, logN(HI)=19.6-20.1. Possible sources for the ongoing ionization are certainly the hot stars within the Bridge, hot gas (revealed by OVI absorption), and leaking photons from the SMC and LMC. From the analysis of CII*, we deduce that the overall density of the Bridge must be low (<0.03-0.1 cm^-3). We argue that our findings combined with other recent observational results should motivate new models of the evolution of the SMC-LMC-Galaxy system.

N. Lehner; J. C. Howk; F. P. Keenan; J. V. Smoker

2008-01-16T23:59:59.000Z

235

Metallicity and Physical Conditions in the Magellanic Bridge  

Science Journals Connector (OSTI)

We present a new analysis of the diffuse gas in the Magellanic Bridge (R.A. 3h) based on HST STIS E140M and FUSE spectra of two early-type stars lying within the Bridge and a QSO behind it. We derive the column densities of the H I (from Ly?), N I, O I, Ar I, Si II, S II, and Fe II of the gas in the Bridge. Using the atomic species, we determine the first gas-phase metallicity of the Magellanic Bridge, -->[Z/H] = ? 1.02 0.07 toward one sight line and -->-1.7 Z/H] N(H I), we show that the Bridge gas along our three lines of sight is ~70%-90% ionized, despite high H I columns, --> log N(H I) 19.6 ? 20.1. Possible sources for the ongoing ionization are certainly the hot stars within the Bridge, hot gas (revealed by O VI absorption), and leaking photons from the SMC and LMC. From the analysis of C II*, we deduce that the overall density of the Bridge must be low (?3). We argue that our findings combined with other recent observational results should motivate new models of the evolution of the SMC-LMC-Galaxy system.

N. Lehner; J. C. Howk; F. P. Keenan; J. V. Smoker

2008-01-01T23:59:59.000Z

236

Semitransparency in interaction-free measurements  

E-Print Network (OSTI)

We discuss the effect of semitransparency in a quantum-Zeno-like interaction-free measurement setup, a quantum-physics based approach that might significantly reduce sample damage in imaging and microscopy. With an emphasis on applications in electron microscopy, we simulate the behavior of probe particles in an interaction-free measurement setup with semitransparent samples, and we show that the transparency of a sample can be measured in such a setup. However, such a measurement is not possible without losing (i.e., absorbing or scattering) probe particles in general, which causes sample damage. We show how the amount of lost particles can be minimized by adjusting the number of round trips through the setup, and we explicitly calculate the amount of lost particles in measurements which either aim at distinguishing two transparencies or at measuring an unknown transparency precisely. We also discuss the effect of the sample causing phase shifts in interaction-free measurements. Comparing the resulting loss of probe particles with a classical measurement of transparency, we find that interaction-free measurements only provide a benefit in two cases: first, if two semitransparent samples with a high contrast are to be distinguished, interaction-free measurements lose less particles than classical measurements by a factor that increases with the contrast. This implies that interaction-free measurements with zero loss are possible if one of the samples is perfectly transparent. A second case where interaction-free measurements outperform classical measurements is if three conditions are met: the particle source exhibits Poissonian number statistics, the number of lost particles cannot be measured, and the transparency is larger than approximately 1/2. In all other cases, interaction-free measurements lose as many probe particles as classical measurements or more.

Sebastian Thomas; Christoph Kohstall; Pieter Kruit; Peter Hommelhoff

2014-08-29T23:59:59.000Z

237

Physics Topics - MST - UW Plasma Physics  

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

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

238

Audio-Frequency Power Measurements  

Science Journals Connector (OSTI)

... " prepared by the National Physical Laboratory, Teddington, is a brief pamphlet dealing with "Audio-Frequency Power Measurements" (pp. 16. London: H.M.S.O., 1954; ...

1955-09-10T23:59:59.000Z

239

Measuring Neutrino Interactions  

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

Measuring Neutrino Interactions with MiniBooNE R. Tayloe for the MiniBooNE collaboration Physics Department, Indiana University Bloomington, IN 47405, USA Abstract. The MiniBooNE...

240

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

Note: This page contains sample records for the topic "measuring physical conditions" 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

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

242

Differences in the Physical Characteristics of Diesel PM with Increasing Biofuel Blend Level  

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

Measure physical characteristics, carbon state, and surface bound oxygen of soot from biodiesel blends.

243

Physical metric and the nature of gravity  

E-Print Network (OSTI)

A physical metric is defined as one which gives a measurable speed of light throughout the whole space time continuum. It will be shown that a metric which satisfies the condition that speed of light on the spherical direction is that in a vacuum gives a correct result. All the metric functions thus obtained are positive definite and exhibits a repulsive force at short distances. The horizon in the sense of vanishing of the speed of light still exists in the radial direction. It is located at 2.60 times of the Schwarzschild radius. This radius corresponds to the size of a black hole, as well as the photon sphere radius. The metric can be used to calculate general relativistic predictions in higher order for any process.

Yukio Tomozawa

2014-05-01T23:59:59.000Z

244

Physical metric and the nature of gravity  

E-Print Network (OSTI)

A physical metric is defined as one which gives a measurable speed of light throughout the whole space time continuum. It will be shown that a metric which satisfies the condition that speed of light on the spherical direction is that in a vacuum gives a correct result. All the metric functions thus obtained are positive definite and exhibits a repulsive force at short distances. The horizon in the sense of vanishing of the speed of light still exists in the radial direction. It is located at 2.60 times of the Schwarzschild radius. This radius corresponds to the size of a black hole, as well as the photon sphere radius. The metric can be used to calculate general relativistic predictions in higher order for any process.

Tomozawa, Yukio

2014-01-01T23:59:59.000Z

245

VOLUME 77, NUMBER 13 P H Y S I C A L R E V I E W L E T T E R S 23 SEPTEMBER 1996 Measuring Implosion Symmetry and Core Conditions in the National Ignition Facility  

E-Print Network (OSTI)

Implosion Symmetry and Core Conditions in the National Ignition Facility R. D. Petrasso and C. K. Li Plasma, California 94550 S. Cremer, J. P. Knauer, C. P. Verdon, and R. L. Kremens Laboratory for Laser Energetics energies from 27 to 30.8 MeV result from the implosion of ignition- scale inertial confinement fusion

246

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

247

Measurement-Measurement-  

E-Print Network (OSTI)

Internet Measurement- System A Measurement- System B Control System GPS Satellite GPS Satellite GPS Receiver GPS Receiver 2) measurement 3) data1) command Methodology for One-way IP Performance Measurement This paper proposes a methodology for measurement of one-way IP performance metrics such as one-way delay

Jeong, Jaehoon "Paul"

248

Device Physics of Nanoscale Interdigitated Solar Cells: Preprint  

SciTech Connect

This paper uses multidimensional device simulation to explore the physics and solar cell performance of interdigitated p-n junctions for material parameters relevant to the postulated conditions.

Metzger, W. K.; Levi, D.

2008-05-01T23:59:59.000Z

249

Physics Illinois Undergraduate Programs  

E-Print Network (OSTI)

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

Gilbert, Matthew

250

Physics 6321 Coastal oceanography  

E-Print Network (OSTI)

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

deYoung, Brad

251

High Energy Physics  

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

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

252

People's Physics Book The People's Physics Book  

E-Print Network (OSTI)

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

California at Santa Cruz, University of

253

Physics Procedia 00 (2013) 16 Physics Procedia  

E-Print Network (OSTI)

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

Adler, Joan

254

People's Physics Book The People's Physics Book  

E-Print Network (OSTI)

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

California at Santa Cruz, University of

255

Physics and Astronomy Chemical Physics Concentration  

E-Print Network (OSTI)

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

Thaxton, Christopher S.

256

Physics Procedia 00 (2013) 15 Physics Procedia  

E-Print Network (OSTI)

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

Adler, Joan

257

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network (OSTI)

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

Low, Robert

258

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network (OSTI)

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

Low, Robert

259

DEPARTMENT of PHYSICS Physics Undergraduate Courses Handbook  

E-Print Network (OSTI)

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

Low, Robert

260

Relativistic Quantum Field Theory with a Physical State Vector  

E-Print Network (OSTI)

Evolution of a physical quantum state vector is described as governed by two distinct physical laws: Continuous, unitary time evolution and a relativistically covariant reduction process. In previous literature, it was concluded that a relativistically satisfactory version of the collapse postulate is in contradiction with physical measurements of a non-local state history. Here it is shown that such measurements are excluded when reduction is formulated as a physical process and the measurement devices are included as part of the state vector.

Bernd A. Berg

1998-07-17T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" 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

Iron opacity predictions under solar interior conditions  

Science Journals Connector (OSTI)

......predictions under solar interior conditions...using Opacity Project atomic data for...conditions within the solar convective zone...greatest binding energy per nucleon...measurements for photon energies greater than 1...region of the solar convective zone...for the Opacity Project (OP) and opal......

D. S. Whittaker; G. J. Tallents

2009-12-21T23:59:59.000Z

262

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

263

Terms and Conditions  

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

Terms and Conditions Terms and Conditions Terms and Conditions As a premier national research and development laboratory, LANL seeks to do business with qualified companies that offer value and high quality products and services. Contact Small Business Office (505) 667-4419 Email Use information below as guideline to doing business An "Appendix SFA-1" contains FAR and DEAR Clauses that are incorporated by reference into a particular subcontract. "Exhibit A General Conditions" are the general terms and conditions applicable to a particular subcontract. Note: The contents of the SFA-1 and Exhibit A (below) are not the only terms and conditions that will be in a LANS subcontract but represent the terms that generally do not change in a particular type of procurement. The

264

Terms and Conditions  

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

Testbed Results Current Testbed Research Proposal Process Terms and Conditions Dark Fiber Testbed Performance (perfSONAR) Software & Tools Development Partnerships...

265

Running Boundary Condition  

E-Print Network (OSTI)

In this paper we argue that boundary condition may run with energy scale. As an illustrative example, we consider one-dimensional quantum mechanics for a spinless particle that freely propagates in the bulk yet interacts only at the origin. In this setting we find the renormalization group flow of U(2) family of boundary conditions exactly. We show that the well-known scale-independent subfamily of boundary conditions are realized as fixed points. We also discuss the duality between two distinct boundary conditions from the renormalization group point of view. Generalizations to conformal mechanics and quantum graph are also discussed.

Ohya, Satoshi; Tachibana, Motoi

2010-01-01T23:59:59.000Z

266

Running Boundary Condition  

E-Print Network (OSTI)

In this paper we argue that boundary condition may run with energy scale. As an illustrative example, we consider one-dimensional quantum mechanics for a spinless particle that freely propagates in the bulk yet interacts only at the origin. In this setting we find the renormalization group flow of U(2) family of boundary conditions exactly. We show that the well-known scale-independent subfamily of boundary conditions are realized as fixed points. We also discuss the duality between two distinct boundary conditions from the renormalization group point of view. Generalizations to conformal mechanics and quantum graph are also discussed.

Satoshi Ohya; Makoto Sakamoto; Motoi Tachibana

2010-05-25T23:59:59.000Z

267

Graph-theoretic analysis of discrete-phase-space states for condition change detection and quantification of information  

SciTech Connect

Data collected from devices and human condition may be used to forewarn of critical events such as machine/structural failure or events from brain/heart wave data stroke. By monitoring the data, and determining what values are indicative of a failure forewarning, one can provide adequate notice of the impending failure in order to take preventive measures. This disclosure teaches a computer-based method to convert dynamical numeric data representing physical objects (unstructured data) into discrete-phase-space states, and hence into a graph (structured data) for extraction of condition change.

Hively, Lee M.

2014-09-16T23:59:59.000Z

268

Characterization and conditioning of SSPX plasma facing surfaces  

Science Journals Connector (OSTI)

The Sustained Spheromak Physics Experiment (SSPX) will examine the confinement properties of spheromak plasmas sustained by DC helicity injection. Understanding the plasma-surface interactions is an important component of the experimental program since the spheromak plasma is in close contact with a stabilizing wall (flux conserver) and is maintained by a high current discharge in the coaxial injector region. Peak electron temperatures in the range of 400 eV are expected, so the copper plasma facing surfaces in SSPX have been coated with tungsten to minimize sputtering and plasma contamination. Here, we report on the characterization and conditioning of these surfaces used for the initial studies of spheromak formation in SSPX. The high pressure plasma-sprayed tungsten facing the SSPX plasma was characterized in situ using ?-backscattering and ex situ using laboratory measurements on similarly prepared samples. Measurements showed that water can be desorbed effectively through baking while the removal rates of volatile impurity gases during glow discharge and shot conditioning indicated a large source of carbon and oxygen in the porous coating.

D.A. Buchenauer; B.E. Mills; R. Wood; S. Woodruff; D.N. Hill; E.B. Hooper; D.F. Cowgill; M.W. Clift; N.Y. Yang

2001-01-01T23:59:59.000Z

269

Conditional probabilities in quantum theory, and the tunneling time controversy  

E-Print Network (OSTI)

It is argued that there is a sensible way to define conditional probabilities in quantum mechanics, assuming only Bayes's theorem and standard quantum theory. These probabilities are equivalent to the ``weak measurement'' predictions due to Aharonov {\\it et al.}, and hence describe the outcomes of real measurements made on subensembles. In particular, this approach is used to address the question of the history of a particle which has tunnelled across a barrier. A {\\it gedankenexperiment} is presented to demonstrate the physically testable implications of the results of these calculations, along with graphs of the time-evolution of the conditional probability distribution for a tunneling particle and for one undergoing allowed transmission. Numerical results are also presented for the effects of loss in a bandgap medium on transmission and on reflection, as a function of the position of the lossy region; such loss should provide a feasible, though indirect, test of the present conclusions. It is argued that the effects of loss on the pulse {\\it delay time} are related to the imaginary value of the momentum of a tunneling particle, and it is suggested that this might help explain a small discrepancy in an earlier experiment.

Aephraim M. Steinberg

1995-02-02T23:59:59.000Z

270

When Does Aid Conditionality Work?  

E-Print Network (OSTI)

institutions may tailor conditions for success because theytailor their conditions for success, and they are especially

Montinola, Gabriella R.

2010-01-01T23:59:59.000Z

271

Tevatron Run II Physics Projections  

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

Run II Physics Projections (Spring 2006) Run II Physics Projections (Spring 2006) Document for the P5 Committee (version 8, September 30, 2005) Electroweak Precision Measurements and Standard Model Higgs Searches W Mass Measurement: 20 - 30 MeV Projections versus Integrated Luminosity (made by CDF): eps, gif, gif (log) Extrapolated from Run Ib measurement Uncertainties assumed to scale with luminosity: Statiscal uncertainties Systematic uncertainties such as Energy and momentum scale, Hadron Recoil against W Uncertainties assumed not to scale with luminosity: W production and decay: PDFs, d(sigma_W)/d(Pt), higher order QCD/QED effects Assumed to be beween 20 MeV (dashed lines) and 30 MeV (solid lines) Top Mass Measurement: ~1.5 GeV Assumptions Channel: only lepton+jets channle considered. Uncertainties that scale with luminosity - 1 / sqrt(lum)

272

Physical Review Letters.  

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

HIGHLIGHT of our most recent work to be published shortly in HIGHLIGHT of our most recent work to be published shortly in Physical Review Letters. We prepared a range of well characterized samples by the sol-gel method developed in our laboratory. By careful doping we controlled the divalent doping (in one set of samples) and the oxygen content (in the second set). We measured the temperature dependent magnetotransport behaviour of these complex oxides. The electronic structure of these well characterized samples was measured by electron energy-loss spectroscopy using the newly installed CM200/FEG microscopes. No discernible change in the Mn L3,2 edges were observed either as a function of doping or oxygen content. However, the O-K edge(1s->2p transitions) intensity, sensitive to the 2p hole density on oxygen sites, varied systematically

273

LHC Physics and Cosmology  

E-Print Network (OSTI)

In these Lectures I review possible constraints on particle physics models, obtained by means of combining the results of collider measurements with astrophysical data. I emphasize the theoretical-model dependence of these results. I discuss supersymmetric dark matter constraints at colliders (mainly LHC) in various theoretical contexts: the standard Cosmological-Constant-Cold-Dark-Matter (Lambda-CDM) model, (super)string-inspired ones and non-equilibrium relaxation dark energy models. I then investigate the capability of LHC measurements in asserting whether supersymmetric matter (if discovered) constitutes part, or all, of the astrophysical dark matter. I also discuss prospects for improving the constraints in future precision facilities, such as the International Linear Collider.

Nikolaos E. Mavromatos

2007-08-01T23:59:59.000Z

274

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

SciTech Connect

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

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

1998-05-01T23:59:59.000Z

275

Simplified Space Conditioning  

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

Simplified Space Conditioning Simplified Space Conditioning Duncan Prahl, RA IBACOS, Inc. Building America Technical Update April 29, 2013 Simplified Space Conditioning Rethinking HVAC Design * Traditional Method - Assume envelope losses dictate the load - Room by room load analysis - Pick Equipment and distribute to meet the load in each room * New Method - Consider how the occupants live in the building - Seriously consider internal gains in both heating and cooling - Consider ventilation strategy - Design system Simplified Space Conditioning If you are: * A production builder * Participating in "above code" programs * Following ACCA Manual RS or ASHRAE 55 * Need to prove "delivering heat to each habitable room" * Concerned about litigation * Play it safe, Use Manual J, S & D and condition every

276

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

277

Asymptotic Analysis of Multivariate Tail Conditional Expectations  

E-Print Network (OSTI)

instruments so that the resulting position (X) - X is acceptable to regulators/supervisors. The coherent risk related to various coherent risk measures. In the univari- ate case, the tail conditional expectation is asymptotically proportional to the value-at-risk, a popular risk measure. The focus of this paper

Li, Haijun

278

Asymptotic Analysis of Multivariate Tail Conditional Expectations  

E-Print Network (OSTI)

instruments so that the resulting position (X) - X is acceptable to regulators/supervisors. The coherent risk and are closely related to various coherent risk measures. In the univari- ate case, the tail conditional expectation is asymptotically proportional to the value-at-risk, a popular risk measure. The focus

Li, Haijun

279

Physics of the Charm Quark  

SciTech Connect

This is a brief summary about the development of the charm quark physics in the area of experimental physics. The summary is centered in what is done by mexican physicists, particularly in the E791 and the FOCUS Experiment at FERMILAB. FOCUS (or E831) was designed to detect states of matter combining one or more charm quarks with light quarks (strange, up, down). The experiment created 10 times as many such particles as in previous experiments and investigated several topics on charm physics including high precision studies of charm semileptonic decays, studies of hadronic charm decays (branching ratios and Daltiz analyses), lifetime measurements of all charm particles, searches for mixing, CP/CPT violation, rare and forbidden decays, spectroscopy of excited charm mesons and baryons, charm production asymmetry measurements, light quark diffractive studies, QCD studies using charm pair events and searches for and upper limits on: charm pentaquarks, double charm baryons, DSJ(2632)

Carrillo Moreno, Salvador [Universidad Iberoamericana (Mexico); Vazquez Valencia, Elsa Fabiola [CINVESTAV (Mexico); Universidad Iberoamericana (Mexico)

2006-09-25T23:59:59.000Z

280

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

Note: This page contains sample records for the topic "measuring physical conditions" 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

Top Physics at the LHC  

E-Print Network (OSTI)

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

P. de Jong

2009-02-27T23:59:59.000Z

282

Physics & Astronomy Degree options  

E-Print Network (OSTI)

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

Brierley, Andrew

283

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

284

Physics Resources for Teachers  

E-Print Network (OSTI)

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

Collar, Juan I.

285

Department of Physics High Energy Physics Group  

E-Print Network (OSTI)

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

286

Physics-based, Bayesian sequential detection method and system for radioactive contraband  

DOE Patents (OSTI)

A distributed sequential method and system for detecting and identifying radioactive contraband from highly uncertain (noisy) low-count, radionuclide measurements, i.e. an event mode sequence (EMS), using a statistical approach based on Bayesian inference and physics-model-based signal processing based on the representation of a radionuclide as a monoenergetic decomposition of monoenergetic sources. For a given photon event of the EMS, the appropriate monoenergy processing channel is determined using a confidence interval condition-based discriminator for the energy amplitude and interarrival time and parameter estimates are used to update a measured probability density function estimate for a target radionuclide. A sequential likelihood ratio test is then used to determine one of two threshold conditions signifying that the EMS is either identified as the target radionuclide or not, and if not, then repeating the process for the next sequential photon event of the EMS until one of the two threshold conditions is satisfied.

Candy, James V; Axelrod, Michael C; Breitfeller, Eric F; Chambers, David H; Guidry, Brian L; Manatt, Douglas R; Meyer, Alan W; Sale, Kenneth E

2014-03-18T23:59:59.000Z

287

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.

288

1. Physical constants 1 1. PHYSICAL CONSTANTS  

E-Print Network (OSTI)

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

289

Physics 4: Introductory Physics Electromagnetism and Light  

E-Print Network (OSTI)

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

Fygenson, Deborah Kuchnir

290

Terms and Conditions  

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

Terms and Conditions Terms and Conditions R&D Overview 100G Testbed Testbed Description Testbed Results Current Testbed Research Proposal Process Terms and Conditions Virtual Circuits (OSCARS) Performance (perfSONAR) Tools Development Green Networking Authentication & Trust Federation (ATF) Partnerships Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Terms and Conditions Researchers must provide ESnet copies of any articles, presentations, and publications based on testbed research for posting on the ESnet Testbed web site. All publications based on work conducted on the testbed must include the following statement:

291

Heavy flavour physics from top to bottom  

SciTech Connect

We review the status of heavy flavour physics at the Fermilab Tevatron collider by summarizing recent top quark and B physics results from CDF and D0. In particular we discuss the measurement of the top quark mass and top production cross section as well as B meson lifetimes and time dependent B{bar B} mixing results. An outlook of perspectives for top and B physics in Run II starting in 1999 is also given. 38 refs., 23 figs., 8 tabs.

Paulini, M. [Lawrence Berkeley National Lab., CA (United States); CDF and D0 Collaborations

1997-01-01T23:59:59.000Z

292

Definition: Equipment Condition Monitor | Open Energy Information  

Open Energy Info (EERE)

Condition Monitor Condition Monitor Jump to: navigation, search Dictionary.png Equipment Condition Monitor A monitoring device that automatically measures and communicates equipment characteristics that are related to the "health" and maintenance of the equipment. These characteristics can include, but are not limited to temperature, dissolved gas, and loading. These devices can automatically generate alarm signals if conditions exceed preset thresholds.[1] Related Terms sustainability References ↑ https://www.smartgrid.gov/category/technology/equipment_condition_monitor [[C LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ategory: Smart Grid Definitions|Template:BASEPAGENAME]] Retrieved from "http://en.openei.org/w/index.php?title=Definition:Equipment_Condition_Monitor&oldid=502601"

293

Lowx physics  

Science Journals Connector (OSTI)

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

2001-01-01T23:59:59.000Z

294

Subsidiary condition for Yang-Mills theory  

Science Journals Connector (OSTI)

A subsidiary condition for Yang-Mills theory is given. A prescription is proposed for using such a subsidiary condition to eliminate unphysical degrees of freedom from gauge theories in covariant gauges. It is pointed out that elimination of such unphysical modes can generate explicit nonlocal interactions among particles in the physical subspace. The Coulomb interactions among charged particles in QED is one such nonlocal interaction that can be generated in this way. It is argued that confining forces among color-bearing combinations of quarks and transverse gluons in QCD might be another.

Kurt Haller

1983-12-15T23:59:59.000Z

295

IPR Conditions, 25 January 2006 1 Intellectual Property Rights Conditions  

E-Print Network (OSTI)

IPR Conditions, 25 January 2006 1 Intellectual Property Rights Conditions for Collaborative Research Projects (IPR Conditions) I. GENERAL PRINCIPLES These rules should promote the protection guarantee the protection of the participants' intellectual assets. These IPR Conditions establish rules

De Cindio, Fiorella

296

Brief introduction to viscosity in hadron physics  

SciTech Connect

We introduce the concept of viscosity (both shear and bulk) in the context of hadron physics and in particular the meson gas, highlighting the current theoretical efforts to connect possible measurements of the viscosities to underlying physics such as a phase transition or the trace anomaly.

Dobado, Antonio; Llanes-Estrada, Felipe J.; Torres-Rincon, Juan M. [Departamento de Fisica Teorica I, Universidad Complutense de Madrid, 28040 Madrid (Spain)

2010-12-28T23:59:59.000Z

297

HIGH ENERGY PHYSICS SEMINAR, 19931996 1993 Seminars  

E-Print Network (OSTI)

HIGH ENERGY PHYSICS SEMINAR, 1993­1996 1993 Seminars 10/4 Joseph Boudreau Measuring the Z 0 from ZEUS University of Wisconsin 10/25 Thomas E. Browder Unsolved Problems in B Physics Cornell Ecole Normale Superieure 4/4 Naoya Hata Solar Neutrinos: Hint for Neutrino Mass University

298

Physics 405 Syllabus -Summer 2008 Instructor  

E-Print Network (OSTI)

2008 One of the following: Data Reduction and Error Analysis for the Physical Sciences - Phillip R Analysis: The Study of Uncertainties in Physical Measurement 1 #12;- John R. Taylor (University Science these will focus on aspects of error analysis and, possibly, on some aspects of the experiments. At the end

Lathrop, Daniel P.

299

X-Ray Physics Evan Berkowitz  

E-Print Network (OSTI)

X-Ray Physics Evan Berkowitz Junior, MIT Department of Physics (Dated: October 25, 2006) We measure a variety of phenomena related to X-Ray absorption and production. We present data which conforms within, as are 22 Na electron-positron annhilation lines. The importance of understanding x-rays is demonstrated

300

Saturday Morning Physics - Talks  

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

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

Note: This page contains sample records for the topic "measuring physical conditions" 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

B Physics: Theory Overview  

E-Print Network (OSTI)

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

David London

2012-07-19T23:59:59.000Z

302

Project X: Physics Opportunities  

E-Print Network (OSTI)

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

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

2013-06-20T23:59:59.000Z

303

Office of Physical Protection  

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

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

304

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...

305

Carl A. Gagliardi PHYSICS  

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

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

306

ECWEBTermsandConditions.doc  

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

US DEPARTMENT OF ENERGY US DEPARTMENT OF ENERGY ELECTRONIC COMMERCE PROCEDURES, TERMS AND CONDITIONS Version 1.0 May 1, 1998 PROCEDURES What follows prescribes the general procedures and policies to be followed when Electronic Data Interchange (EDI) is used for transmitting requests for quote, quotations, purchase orders, or other business information in lieu of creating one or more paper documents normally associated with conducting business with the Government. See the Terms and Conditions section below for a list of the standard FAR (Federal Acquisition Regulation) and DEAR (Department of Energy Acquisition Regulation) clauses and provisions mandated to be included in Government contracting actions. The Terms and Conditions together with any clauses specified in the specific contract transaction,

307

PHYSICAL REVIEW C  

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

PHYSICAL PHYSICAL REVIEW C 83, 015505 (2011) Measurement of parity-violating γ -ray asymmetry in the capture of polarized cold neutrons on protons M. T. Gericke, 1 R. Alarcon, 2 S. Balascuta, 2 L. Barr´ on-Palos, 3 C. Blessinger, 4 J. D. Bowman, 4,* R. D. Carlini, 5 W. Chen, 6 T. E. Chupp, 7 C. Crawford, 8 S. Covrig, 5 M. Dabaghyan, 9 N. Fomin, 10 S. J. Freedman, 11 T. R. Gentile, 6 R. C. Gillis, 12,13 G. L. Greene, 4,10 F. W. Hersman, 9 T. Ino, 14 G. L. Jones, 15 B. Lauss, 16 M. Leuschner, 17 W. R. Lozowski, 12,13 R. Mahurin, 1,5 Y. Masuda, 14 J. Mei, 5 G. S. Mitchell, 18 S. Muto, 14 H. Nann, 12,13 S. A. Page, 1 S. I. Penttil¨ a, 4 W. D. Ramsay, 1,19 A. Salas-Bacci, 20 S. Santra, 21 M. Sharma, 7 P.-N. Seo, 22 E. I. Sharapov, 23 T. B. Smith, 24 W. M. Snow, 12,13,† W. S. Wilburn, 20 and V. Yuan 20 (NPDGamma Collaboration) 1 University of Manitoba, Winnipeg, MB, Canada R3T 2N2 2 Arizona State University, Tempe, AZ 85287, USA 3 Universidad

308

Higgs Physics at CLIC  

E-Print Network (OSTI)

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

Sicking, E.

2014-01-01T23:59:59.000Z

309

PHYSICS 106 Summer 2011  

E-Print Network (OSTI)

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

Hart, Gus

310

Aspects of Unparticle Physics  

E-Print Network (OSTI)

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

Arvind Rajaraman

2008-09-29T23:59:59.000Z

311

Fundamentals of Plasma Physics  

E-Print Network (OSTI)

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

Callen, James D.

312

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.

313

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

314

Data Validation & Conditioning Kenneth Martin  

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

Validation & Conditioning Validation & Conditioning Kenneth Martin martin@electricpowergroup.com June 27-28, 2013 Washington, DC DOE/OE Transmission Reliability Program 2 The Problem  Phasors are well known to engineers ... but synchrophasors are not  Synchrophasor value dependencies - Precise timing source, algorithms, & hardware  Systems dependent on real-time communications - Delay (latency), bandwidth, errors, & dropouts  Need comparability with established systems (SCADA)  Wide area, high-speed - faster actions Need assurance measurements are correct and... Detect and fix data problems 3 Introduction  Data Validation and Conditioning Project - RFP issued in June 2012 - Awarded to EPG in December 2012 - Completion by October 2014

315

Section 21 - Physics  

Science Journals Connector (OSTI)

It would be difficult to overstate the importance of the field of physics to our understanding of energy. Indeed, it would be easier to describe what domains of physics were not central to the concept of energy. Noble Prize laureates in physicsBecquerel, Curie, Planck, Einstein, Bohr, Marconi, Heisenberg, Schrodinger, Fermi, Betheproduced fundamental advances that not only improved our understanding of energy, but also formed the foundation for our understanding of the Universe itself. Contributions to the modern physics of energy began as early as the 17th century. In 1638 Galileo published his major work on mechanics, including experiments on acceleration, friction, inertia, and falling bodies. At about the same time, Italian physicist Evangelista Torricelli applied Galileos laws to the motion of fluids, establishing the science of hydrodynamics. in 1687, Isaac Newton published Philosophiae naturalis principia mathematica, often regarded as the most important book of science ever written. He established three laws of motion, the law of universal gravitation, and other fundamental principles. Newton thus provided the basic description of the natural laws governing the universe (later modified by the work of Einstein). In the 18th century, Dutch-born Swiss mathematician Daniel Bernoulli stated what is now known as the Bernoulli principle: as the velocity of a fluid increases, the pressure decreases (1738). This becomes a foundation for fluid dynamics. In the 1750s, Leonhard Euler developed his famous Euler equations that would form the basis of fluid mechanics. The Euler equations describe conservation of mass, momentum, and energy for an ideal compressible fluid in three-dimensions. In his Traite elementaire de chimie (1789), the French chemist Antoine Lavoisier introduced the law of conservation of mass that he had developed some years before. The pace of scientific advance accelerated in the 19th century. Beginning in 1824, French engineer Nicolas Lonard (Sadi) Carnot of established that heat moves from a system of higher temperature to one of lower temperature, and that through this process work is done. This provides the basis for the second law of thermodynamics. In 1839, Edmund Becquerel, a French experimental physicist, discovered the photovoltaic effect while experimenting with an electrolytic cell made up of two metal electrodes. James Joule determined the mechanical equivalent of heat by measuring the change in temperature produced by the friction of a paddlewheel attached to a falling weight (1843). Rudolf Clausius, a German mathematical physicist, made the first formal expression of the second law of thermodynamics, which became a cornerstone of modern science (1850). This states that heat cannot of its own accord pass from a colder body to a hotter one. In 1861, Scottish physicist James Clerk Maxwell published On Physical Lines of Force, a landmark four-part paper that forms the basis for classical electromagnetic theory. Austrian physicist Ludwig Boltzmann published a seminal paper on the H-theorem, which described the increase in the entropy of an ideal gas in an irreversible process (1972). This was a founding contribution to the fields of statistical mechanics and statistical thermodynamics. In 1888, Phillip Lenard, a German physicist and assistant to Heinrich Hertz, was the first to cause cathode rays to pass from the interior of a vacuum tube through a thin metal window into the air, where they produce luminosity. In the 1890s, Ludwig Boltzman, an Austrian physicist, founded the field of statistical mechanics. Physicist Wilhelm Roentgen of Germany demonstrated the first X-rays (1895), and their medical implications were immediately recognized. The early 20th century produced a flurry of important advances in the physics of energy. These include Max Plancks work on quantum mechanics, Rutherfords work on radioactivity, Einsteins remarkable year (1905) in which he published three papers that would change the way scientists viewed the natural world, the Geiger-Marsden experiment (1909)

Cutler J. Cleveland; Christopher Morris

2014-01-01T23:59:59.000Z

316

Fuel gas conditioning process  

DOE Patents (OSTI)

A process for conditioning natural gas containing C.sub.3+ hydrocarbons and/or acid gas, so that it can be used as combustion fuel to run gas-powered equipment, including compressors, in the gas field or the gas processing plant. Compared with prior art processes, the invention creates lesser quantities of low-pressure gas per unit volume of fuel gas produced. Optionally, the process can also produce an NGL product.

Lokhandwala, Kaaeid A. (Union City, CA)

2000-01-01T23:59:59.000Z

317

High voltage pulse conditioning  

DOE Patents (OSTI)

Apparatus for conditioning high voltage pulses from particle accelerators in order to shorten the rise times of the pulses. Flashover switches in the cathode stalk of the transmission line hold off conduction for a determinable period of time, reflecting the early portion of the pulses. Diodes upstream of the switches divert energy into the magnetic and electrostatic storage of the capacitance and inductance inherent to the transmission line until the switches close.

Springfield, Ray M. (Sante Fe, NM); Wheat, Jr., Robert M. (Los Alamos, NM)

1990-01-01T23:59:59.000Z

318

Electrical condition monitoring method for polymers  

DOE Patents (OSTI)

An electrical condition monitoring method utilizes measurement of electrical resistivity of an age sensor made of a conductive matrix or composite disposed in a polymeric structure such as an electrical cable. The conductive matrix comprises a base polymer and conductive filler. The method includes communicating the resistivity to a measuring instrument and correlating resistivity of the conductive matrix of the polymeric structure with resistivity of an accelerated-aged conductive composite.

Watkins, Jr., Kenneth S. (Dahlonega, GA); Morris, Shelby J. (Hampton, VA); Masakowski, Daniel D. (Worcester, MA); Wong, Ching Ping (Duluth, GA); Luo, Shijian (Boise, ID)

2008-08-19T23:59:59.000Z

319

Data archiving in experimental physics  

SciTech Connect

In experimental physics, data is archived from a wide variety of sources and used for a wide variety of purposes. In each of these environments, trade-offs are made between data storage rate, data availability, and retrieval rate. This paper presents archive alternatives in EPICS, the overall archiver design and details on the data collection and retrieval requirements, performance studies, design choices, design alternatives, and measurements made on the beta version of the archiver.

Dalesio, L.R.; Watson, W. III; Bickley, M. [Jefferson Lab., Newport News, VA (United States)]|[Los Alamos National Lab., NM (United States); Clausen, M. [Deutches Elektronen Synchrotronen (Germany)]|[Los Alamos National Lab., NM (United States)

1998-07-01T23:59:59.000Z

320

Extremal generalized quantum measurements  

E-Print Network (OSTI)

A measurement on a section K of the set of states of a finite dimensional C*-algebra is defined as an affine map from K to a probability simplex. Special cases of such sections are used in description of quantum networks, in particular quantum channels. Measurements on a section correspond to equivalence classes of so-called generalized POVMs, which are called quantum testers in the case of networks. We find extremality conditions for measurements on K and characterize generalized POVMs such that the corresponding measurement is extremal. These results are applied to the set of channels. We find explicit extremality conditions for two outcome measurements on qubit channels and give an example of an extremal qubit 1-tester such that the corresponding measurement is not extremal.

Anna Jencova

2012-07-23T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" 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

Implementing Rational Surface Locations Measured From Thomson...  

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

Rational Surface Locations Measured From Thomson Scattering Into MSTfit by Curtis A. Johnson Senior Thesis (Physics) at the University of Wisconsin-Madison 2014 i Abstract...

322

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

323

Physics with the ALICE experiment  

E-Print Network (OSTI)

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

Yuri Kharlov; for the ALICE collaboration

2012-03-09T23:59:59.000Z

324

PHYSICS 359 THE SPEED OF LIGHT  

E-Print Network (OSTI)

PHYSICS 359 THE SPEED OF LIGHT INTRODUCTION: The first evidence that light propagates with a finite from or approaching Jupiter. The first accurate measurements of the speed of light were made at a distance of about 9 km. Modern measurements of the speed of light are made by quite different methods

Landstreet, John D.

325

Physics of climate  

Science Journals Connector (OSTI)

A review of our present understanding of the global climate system, consisting of the atmosphere, hydrosphere, cryosphere, lithosphere, and biosphere, and their complex interactions and feedbacks is given from the point of view of a physicist. This understanding is based both on real observations and on the results from numerical simulations. The main emphasis in this review is on the atmosphere and oceans. First, balance equations describing the large-scale climate and its evolution in time are derived from the basic thermohydrodynamic laws of classical physics. The observed atmosphere-ocean system is then described by showing how the balances of radiation, mass, angular momentum, water, and energy are maintained during present climatic conditions. Next, a hierarchy of mathematical models that successfully simulate various aspects of the climate is discussed, and examples are given of how three-dimensional general circulation models are being used to increase our understanding of the global climate "machine." Finally, the possible impact of human activities on climate is discussed, with main emphasis on likely future heating due to the release of carbon dioxide in the atmosphere.

Jos P. Peixto and Abraham H. Oort

1984-07-01T23:59:59.000Z

326

Physics with the ALICE Electromagnetic Calorimeter  

E-Print Network (OSTI)

I will present physics measurements which are achievable in the ALICE experiment at the LHC through the inclusion of a new electromagnetic calorimeter. I will focus on jet measurements in proton proton and heavy ion collisions. Detailed simulations have been performed on jet reconstruction, jet triggering, heavy flavor jet reconstruction through electron identification, gamma-jet reconstruction and the measurements of identified hadrons and resonances in jets. I will show the physics capabilities which are made possible through the combination of calorimeter information with the other detector components in ALICE.

Rene Bellwied; for the ALICE Collaboration

2009-07-17T23:59:59.000Z

327

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 December 2013 | In...

328

Elementary Reactor Physics  

Science Journals Connector (OSTI)

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

J. F. HILL

1962-02-10T23:59:59.000Z

329

Physics, complexity and causality  

Science Journals Connector (OSTI)

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

George F. R. Ellis

2005-06-08T23:59:59.000Z

330

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

E-Print Network (OSTI)

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

Winokur, Michael

331

E-Print Network 3.0 - anderson meson physics Sample Search Results  

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

Knoll, Jrn - Gesellschaft fr Schwerionenforschung Collection: Physics 20 CLNS 991603 Measurement of Charm Meson Lifetimes Summary: CLNS 991603 CLEO 99-2 Measurement of...

332

Drag coefficient for the air-sea exchange: foam impact in hurricane conditions  

E-Print Network (OSTI)

A physical model is proposed for the estimation of the foam impact on the variation of the effective drag coefficient, C_d, with reference to the wind speed U10 in stormy and hurricane conditions. In the present model C_d is approximated by partitioning the sea surface into foam-covered and foam-free areas. Based on the available optical and radiometric measurements of the fractional foam coverage and the characteristic roughness of the sea-surface in the saturation limit of the foam coverage, the model yields the resulting dependence of C_d vs U10. This dependence is in fair agreement with that evaluated from field measurements of the vertical variation of the mean wind speed.

Golbraikh, Ephim

2014-01-01T23:59:59.000Z

333

Physical Probability Patrick Maher  

E-Print Network (OSTI)

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

Fitelson, Branden

334

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

335

in Condensed Matter Physics  

E-Print Network (OSTI)

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

van der Torre, Leon

336

PHYSICS, QUALITATIVE BIBLIOGRAPHY  

E-Print Network (OSTI)

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

de Kleer, Johan

337

B Physics at LHCb  

E-Print Network (OSTI)

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

Monica Pepe Altarelli; Frederic Teubert

2008-02-13T23:59:59.000Z

338

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.

339

Particle Physics, Nuclear Physics and Nuclear Energy  

Science Journals Connector (OSTI)

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

Hesheng Chen

2011-01-01T23:59:59.000Z

340

Physics of Cancer | Princeton Plasma Physics Lab  

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

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

Note: This page contains sample records for the topic "measuring physical conditions" 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

Sustained Spheromak Physics Experiment (SSPX): design and physics results  

Science Journals Connector (OSTI)

The Sustained Spheromak Physics Experiment (SSPX) was a high-temperature (Te up to 0.5keV) spheromak formed by coaxial helicity injection (CHI) and with plasma duration of a few milliseconds following the high-current formation stage. Clean walls and low impurity operation were obtained by a combination of baking, discharge cleaning and titanium deposition on the walls, allowing the generation of high-quality plasmas. Resistive-magnetohydrodynamic simulations, benchmarked to the experiment, were used to elucidate the physics. The detailed characteristics of the n=1 toroidal mode associated with CHI were determined as was the physics of the nonlinear current drive and magnetic reconnection that formed and sustained the spheromak. If the helicity injection rate was reduced following formation the plasma became relatively quiescent and magnetic surfaces formed. The measured thermal diffusivity in the core was as low as ~1m2s?1. However, reconnection events during buildup or sustainment of the plasma current by CHI were found to open magnetic surfaces throughout the plasma allowing rapid energy loss to the walls. As a result, experiments and simulations in SSPX found no path to simultaneous sustainment by CHI and good energy confinement. Additional physics results are also presented in this review.

E B Hooper; R H Bulmer; B I Cohen; D N Hill; C T Holcomb; B Hudson; H S McLean; L D Pearlstein; C A Romero-Talams; C R Sovinec; B W Stallard; R D Wood; S Woodruff

2012-01-01T23:59:59.000Z

342

Experimental Particle Physics  

SciTech Connect

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

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

2014-08-31T23:59:59.000Z

343

Physical protection system design and evaluation  

SciTech Connect

The design of an effective physical protection system includes the determination of physical protection system objectives, initial design of a physical protection system, design evaluation, and probably a redesign or refinement. To develop the objectives, the designer must begin by gathering information about facility operation and conditions, such as a comprehensive description of the facility, operating conditions, and the physical protection requirements. The designer then needs to define the threat. This involves considering factors about potential adversaries: class of adversary, adversary`s capabilities, and range of adversary`s tactics. Next, the designer should identify targets. Determination of whether or not the materials being protected are attractive targets is based mainly on the ease or difficulty of acquisition and desirability of the material. The designer now knows the objectives of the physical protection system, that is, {open_quotes}what to protect against whom.{close_quotes} The next step is to design the system by determining how best to combine such elements as fences, vaults, sensors and assessment devices, entry control elements, procedures, communication devices, and protective forces personnel to meet the objectives of the system. Once a physical protection system is designed, it must be analyzed and evaluated to ensure it meets the physical protection objectives. Evaluation must allow for features working together to ensure protection rather than regarding each feature separately. Due to the complexity of the protection systems, an evaluation usually requires modeling techniques. If any vulnerabilities are found, the initial system must be redesigned to correct the vulnerabilities and a reevaluation conducted. This paper reviews the physical protection system design and methodology mentioned above. Examples of the steps required and a brief introduction to some of the technologies used in modem physical protections system are given.

Williams, J.D.

1997-03-01T23:59:59.000Z

344

E-Print Network 3.0 - applied health physics Sample Search Results  

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

health information that relate to a physical or mental health condition or the payment of health care... of certain types of wounds or physical injuries. Special Use and Disclosure...

345

Physics at Strathclyde N. Langford  

E-Print Network (OSTI)

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

Mottram, Nigel

346

Indirect constraints on New Physics from the B-factories  

E-Print Network (OSTI)

The existence of New Physics particles can be probed by performing precision measurements of physics phenomena at the few GeV energy scale. The decays of B and D mesons are an excellent example of relatively low energy phenomena that can be sensitive to New Physics scales at the TeV region or above. In this contribution, some recent results obtained by the BABAR and Belle Collaborations are presented, and their implications for the indirect searches for New Physics are discussed.

Gaz, A

2014-01-01T23:59:59.000Z

347

Faculty Position Therapeutic Medical Physics  

E-Print Network (OSTI)

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

348

Early B-physics at ATLAS  

E-Print Network (OSTI)

The B-physics program at the ATLAS experiment, which covers the mid-rapidity region, complements that at the dedicated LHCb experiment, which covers the forward rapidity region. At the early stage of the LHC operation, the program concentrated on understanding of detector performance and measurements of quarkonia and D mesons. This article presents recent results of the B-physics program at ATLAS.

S. Oda; on behalf of the ATLAS Collaboration

2010-10-18T23:59:59.000Z

349

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

E-Print Network (OSTI)

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

350

Physics at HERA  

SciTech Connect

HERA is the first electron-proton colliding beam facility and the big news about it is that it works, despite concerns both about the reproducibility of the magnetic field in the proton ring magnets at injection and about the e-p beam-beam interaction. It is, however, a complex accelerator facility that will take a few years to bring up to full and efficient operation. With the present center of mass energy of 296 GeV, it extends the energy range for photoproduction studies by an order of magnitude over fixed target experiments and deep-inelastic e-p scattering up to momentum transfer values approaching 10{sup 5} GeV{sup 2} in both neutral and charged current interactions. At reasonable Q{sup 2}, and so with the present luminosity, events with Bjorken x down to a few times 10{sup {minus}5} are being studied. Two powerful general-purpose detectors -- H1 and ZEUS -- have been constructed to address these physics challenges and both collaborations have made new and interesting measurements as presented at this and other recent HEP conferences. The experimental program started in July 1992 and we are on a steep learning curve both with HERA and with the detectors.

Derrick, M.

1993-12-31T23:59:59.000Z

351

Measuring axial pump thrust  

DOE Patents (OSTI)

An apparatus for measuring the hydraulic axial thrust of a pump under operation conditions is disclosed. The axial thrust is determined by forcing the rotating impeller off of an associated thrust bearing by use of an elongate rod extending coaxially with the pump shaft. The elongate rod contacts an impeller retainer bolt where a bearing is provided. Suitable measuring devices measure when the rod moves to force the impeller off of the associated thrust bearing and the axial force exerted on the rod at that time. The elongate rod is preferably provided in a housing with a heat dissipation mechanism whereby the hot fluid does not affect the measuring devices. 1 fig.

Suchoza, B.P.; Becse, I.

1988-11-08T23:59:59.000Z

352

Physics results from dynamical overlap fermion simulations  

E-Print Network (OSTI)

I summarize the physics results obtained from large-scale dynamical overlap fermion simulations by the JLQCD and TWQCD collaborations. The numerical simulations are performed at a fixed global topological sector; the physics results in the theta-vacuum is reconstructed by correcting the finite volume effect, for which the measurement of the topological susceptibility is crucial. Physics applications we studied so far include a calculation of chiral condensate, pion mass, decay constant, form factors, as well as (vector and axial-vector) vacuum polarization functions and nucleon sigma term.

Shoji Hashimoto

2008-11-08T23:59:59.000Z

353

A Realist Interpretation of the Quantum Measurement Problem  

E-Print Network (OSTI)

A new, realist interpretation of the quantum measurement processes is given. In this scenario a quantum measurement is a non-equilibrium phase transition in a ``resonant cavity'' formed by the entire physical universe including all its material and energy content. Both the amplitude and the phase of the quantum mechanical wavefunction acquire substantial meaning in this picture, and the probabilistic element is removed from the foundations of quantum mechanics, its apparent presence in the quantum measurement process is viewed as a result of the sensitive dependence on initial/boundary conditions of the non-equilibrium phase transitions in a many degree-of-freedom system. The implications of adopting this realist ontology to the clarification and resolution of lingering issues in the foundations of quantum mechanics, such as wave-particle duality, Heisenberg's uncertainty relation, Schrodinger's Cat paradox, first and higher order coherence of photons and atoms, virtual particles, the existence of commutation relations and quantized behavior, etc., are also presented.

Xiaolei Zhang

2006-02-27T23:59:59.000Z

354

Inquiring Minds - Questions About Physics  

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

Physics of the universe Physics of the universe From the big bang to black holes, extra dimensions, space and time Centrifugal Force From smaller than atoms to larger than galaxies structures spin and in doing so the centrifugal force throws things outward. Might not the Universe as a whole be spinning on an axis and what we currently ascribe to a mysterious repulsive force be a centrifugal force throwing things outward? Thrown out rather than pushed or drawn? Motion in the Universe I have been attempting to calculate the speed at which an individual is traveling through the universe when standing 'still'. i.e., the rotation speed of the earth, the speed of the orbit of the earth around the sun, the solar system withing our galaxy, the galaxy...etc. Is there such a measurement or 'thing' as absolute STILL?

355

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

E-Print Network (OSTI)

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

Hemmers, Oliver

356

THE PHYSICS MAJOR (Physics and Astronomy & Astrophysics Streams)  

E-Print Network (OSTI)

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

Tobar, Michael

357

Semiclassical energy conditions and wormholes  

E-Print Network (OSTI)

We consider the nonlinear energy conditions and their quantum extensions. These new energy conditions behave much better than the usual pointwise energy conditions in the presence of semiclassical quantum effects. Analogous quantum extensions for the linear energy conditions are not always satisfied as one enters the quantum realm, but they can be used to constrain the violation of the classical conditions. Thus, the existence of wormholes supported by a fluid which violates the null energy condition in a controlled way is of particular interest.

Martin-Moruno, Prado

2014-01-01T23:59:59.000Z

358

Semiclassical energy conditions and wormholes  

E-Print Network (OSTI)

We consider the nonlinear energy conditions and their quantum extensions. These new energy conditions behave much better than the usual pointwise energy conditions in the presence of semiclassical quantum effects. Analogous quantum extensions for the linear energy conditions are not always satisfied as one enters the quantum realm, but they can be used to constrain the violation of the classical conditions. Thus, the existence of wormholes supported by a fluid which violates the null energy condition in a controlled way is of particular interest.

Prado Martin-Moruno

2014-11-17T23:59:59.000Z

359

Dynamic pressure as a measure of gas turbine engine (GTE) performance  

Science Journals Connector (OSTI)

Utilizing in situ dynamic pressure measurement is a promising novel approach with applications for both control and condition monitoring of gas turbine-based propulsion systems. The dynamic pressure created by rotating components within the engine presents a unique opportunity for controlling the operation of the engine and for evaluating the condition of a specific component through interpretation of the dynamic pressure signal. Preliminary bench-top experiments are conducted with dc axial fans for measuring fan RPM, blade condition, surge and dynamic temperature variation. Also, a method, based on standing wave physics, is presented for measuring the dynamic temperature simultaneously with the dynamic pressure. These tests are implemented in order to demonstrate the versatility of dynamic pressure-based diagnostics for monitoring several different parameters, and two physical quantities, dynamic pressure and dynamic temperature, with a single sensor. In this work, the development of a dynamic pressure sensor based on micro-electro-mechanical system technology for in situ gas turbine engine condition monitoring is presented. The dynamic pressure sensor performance is evaluated on two different gas turbine engines, one having a fan and the other without.

G Rinaldi; I Stiharu; M Packirisamy; V Nerguizian; R Jr Landry; J-P Raskin

2010-01-01T23:59:59.000Z

360

WASTE CONDITIONING FOR TANK HEEL TRANSFER  

SciTech Connect

This report summarizes the research carried out at Florida International University's Hemispheric Center for Environmental Technology (FIU-HCET) for the fiscal year 1998 (FY98) under the Tank Focus Area (TFA) project ''Waste Conditioning for Tank Slurry Transfer.'' The objective of this project is to determine the effect of chemical and physical properties on the waste conditioning process and transfer. The focus of this research consisted in building a waste conditioning experimental facility to test different slurry simulants under different conditions, and analyzing their chemical and physical properties. This investigation would provide experimental data and analysis results that can make the tank waste conditioning process more efficient, improve the transfer system, and influence future modifications to the waste conditioning and transfer system. A waste conditioning experimental facility was built in order to test slurry simulants. The facility consists of a slurry vessel with several accessories for parameter control and sampling. The vessel also has a lid system with a shaft-mounted propeller connected to an air motor. In addition, a circulation system is connected to the slurry vessel for simulant cooling and heating. Experimental data collection and analysis of the chemical and physical properties of the tank slurry simulants has been emphasized. For this, one waste slurry simulant (Fernald) was developed, and another two simulants (SRS and Hanford) obtained from DOE sites were used. These simulants, composed of water, soluble metal salts, and insoluble solid particles, were used to represent the actual radioactive waste slurries from different DOE sites. The simulants' chemical and physical properties analyzed include density, viscosity, pH, settling rate, and volubility. These analyses were done to samples obtained from different experiments performed at room temperature but different mixing time and strength. The experimental results indicate that the viscosity of the slurries follow the Bingham plastic model, especially when the solids concentration is increased. At low concentrations slurries may behave as Newtonian fluids. The three simulants follow a similar settling rate behavior. This behavior can be explained as a combination of one or more decreasing exponential curves. This means that the particle settling rate of the simulants decreases exponentially as time increases. The pH range for the three simulants was from 8 to 13 at all concentrations. The SRS simulant showed the highest pH, around 12; the other two simulants, Hanford and Fernald, had about the same pH range, from 3 to 9. When comparing volubility of the three simulants at the same concentration, SRS simulant showed higher volubility, followed by the Hanford simulant and the Fernald simulant, in that order. Further work is scheduled for next year (FY99) in this project, when other parameters like simulants particle size distribution, particle shape, and crystallization behavior will be studied. The same tests performed this period also will be performed at different temperatures for data comparison.

M.A. Ebadian, Ph.D.

1999-01-01T23:59:59.000Z

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361

Nonequilibrium Markov processes conditioned on large deviations  

E-Print Network (OSTI)

We consider the problem of conditioning a Markov process on a rare event and of representing this conditioned process by a conditioning-free process, called the effective or driven process. The basic assumption is that the rare event used in the conditioning is a large deviation-type event, characterized by a convex rate function. Under this assumption, we construct the driven process via a generalization of Doob's $h$-transform, used in the context of bridge processes, and show that this process is equivalent to the conditioned process in the long-time limit. The notion of equivalence that we consider is based on the logarithmic equivalence of path measures and implies that the two processes have the same typical states. In constructing the driven process, we also prove equivalence with the so-called exponential tilting of the Markov process, which is used with importance sampling to simulate rare events, and which gives rise, from the point of view of statistical mechanics, to a nonequilibrium version of the canonical ensemble. Other links between our results and the topics of bridge processes, quasi-stationary distributions, stochastic control, and conditional limit theorems are mentioned.

Raphael Chetrite; Hugo Touchette

2014-05-20T23:59:59.000Z

362

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

363

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

364

American Physical Society awards  

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

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

365

Physical Protection Program Manual  

Directives, Delegations, and Requirements

Supplements DOE O 473.1, by establishing requirements for the physical protection of safeguards and security interests. Cancels: DOE M 5632.1C-1

2002-12-23T23:59:59.000Z

366

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...

367

Physics at LHC  

E-Print Network (OSTI)

The prospects for physics at the LHC are discussed, starting with the foretaste, preparation (and perhaps scoop) provided by the Tevatron, in particular, and then continuing through the successive phases of LHC operation. These include the start-up phase, the early physics runs, the possible search for new physics in double diffraction, the continuation to nominal LHC running, and the possible upgrade of the LHC luminosity. Emphasis is placed on the prospects for Higgs physics and the search for supersymmetry. The progress and discoveries of the LHC will set the time-scale and agenda for the major future accelerator projects that will follow it.

John Ellis

2006-11-17T23:59:59.000Z

368

Nuclear Physics: Experiment Research  

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

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

369

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

370

Nuclear Physics Program  

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

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

371

High Energy Physics  

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

Large Scale Production Computing and Storage Requirements for High Energy Physics: Target 2017 HEPlogo.jpg The NERSC Program Requirements Review "Large Scale Computing and Storage...

372

Advances in Physical Chemistry  

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

Hindawi Publishing Corporation Advances in Physical Chemistry Volume 2011, Article ID 907129, 18 pages doi:10.11552011907129 Review Article Contrast and Synergy between...

373

Handbook 2014 Department of Physics  

E-Print Network (OSTI)

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

Chaudhuri, Sanjay

374

Solar Heating and Air Conditioning  

Science Journals Connector (OSTI)

...given of the status of solar fired air conditioning...to an approach to cool storage in solar air conditioning systems...an assessment of cool storage for reducing peak electrical...rolling cylinder thermal energy storage device for compact...

1980-01-01T23:59:59.000Z

375

DOCTORAL PROGRAMME MATHEMATICS AND PHYSICS, Subprogramme PHYSICS,  

E-Print Network (OSTI)

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

?umer, Slobodan

376

Hydrologic conditions controlling runoff generation immediately after wildfire  

E-Print Network (OSTI)

Hydrologic conditions controlling runoff generation immediately after wildfire Brian A. Ebel,1 John and hydraulic properties of soil, hydrologic states, and an ash layer immediately following wildfire. The field site is within the area burned by the 2010 Fourmile Canyon Fire in Colorado, USA. Physical

377

Physics Reach at Future Colliders  

SciTech Connect

The physics reach at future colliders is discussed, with focus on the Higgs sector. First we present the Standard Model and some results obtained at the existing high-energy hadron collider, Tevatron, together with the corresponding expectations for the Large Hadron Collider (LHC), which starts operating in 2008. Then we discuss important low energy measurements: the anomalous magnetic moment for muon and the leptonic B-decay together with b{yields}s{gamma}. Finally the potential of the planned e{sup +}e{sup -} International Linear Collider (ILC) and its possible option Photon Linear Collider (PLC), e{gamma} and {gamma}{gamma}, is shortly presented.

Krawczyk, Maria [Institute of Theoretical Physics, University of Warsaw, ul. Hoz-dota 69, 00-681 Warsaw (Poland); CERN, CH-1211 Geneva 23 (Switzerland)

2007-11-27T23:59:59.000Z

378

Instantaneous Measurement of Nonlocal Variables Lev Vaidman  

E-Print Network (OSTI)

Instantaneous Measurement of Nonlocal Variables Lev Vaidman 1 School of Physics and Astronomy variables related to two or more separate sites can be measured instantaneously, except for a finite time of the measurement. It is a verification measurement: it yields reliably the eigenvalues of the nonlocal variables

Vaidman, Lev

379

Measurements I 17.1 Introduction  

E-Print Network (OSTI)

Chapter 17 Measurements I 17.1 Introduction I place a tape measure with one end on the floor next are the essential features of this measurement process? The key point is the establishment of a correlation between a physical property (the height) of a measured system (the table) and a suitable record (in the notebook

Griffiths, Robert B.

380

Physics 141 & Physics 153 Laboratory Schedule -Physics 141 & 153 -Spring 2008  

E-Print Network (OSTI)

Physics 141 & Physics 153 i Laboratory Schedule - Physics 141 & 153 - Spring 2008 Monday Tuesday ­ No Labs! #12;Physics 141 & Physics 153 ii Lab Instructor Information Name: Office: Phone: Email: Mailbox: · Write your lab instructor's name on it · Give it to Theresa Sis, Main Physics Office, 116 Brace Lab

Farritor, Shane

Note: This page contains sample records for the topic "measuring physical conditions" 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

Physics centre threatened  

Science Journals Connector (OSTI)

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

Traci Watson

1992-12-10T23:59:59.000Z

382

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

383

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

384

Conference on Industrial Physics  

Science Journals Connector (OSTI)

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

HERBERT R. LANG

1935-04-06T23:59:59.000Z

385

Nuclear physics and cosmology  

SciTech Connect

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

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

2014-05-09T23:59:59.000Z

386

Lowx physics  

Science Journals Connector (OSTI)

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

2001-01-01T23:59:59.000Z

387

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

388

Medium energy nuclear physics research  

SciTech Connect

This paper covers the following topics: Experiment 87-02: Threshold Electrodisintegration of the Deuteron at High Q{sup 2}; Measurement of the 5th Structure Function in Deuterium and {sup 12}C; Single-Particle Densities of sd-Shell Nuclei; Experiment 84-28: Transverse Form Factors of {sup 117}Sn; Experiment 82-11: Elastic Magnetic Electron Scattering from {sup 13}C; Experiment 89-09: Measurement of the Elastic Magnetic Form Factor of {sup 3}He at High Momentum Transfer; Experiment 89-15: Coincidence Measurement of the D(e,e{prime}p) Cross-Section at Low Excitation Energy and High Momentum Transfer; Experiment 87-09: Measurement of the Quadrupole Contribution to the N {yields} {Delta} Excitation; Experiment E-140: Measurement of the x-, Q{sup 2} and A-Dependence of R = {sigma}{sub L}/{sigma}{sub T}; PEP Beam-Gas Event Analysis: Physics with the SLAC TPC/2{gamma} Detector; Drift Chamber Tests at Brookhaven National Laboratory; Experiment PR-89-031: Multi-nucleon Knockout Using the CLAS Detector; Electronics Design for the CLAS Region 1 Drift Chamber; Color Transparencies in the Electroproduction of Nucleon Resonances; and Experiment PR-89-015: Study of Coincidence Reactions in the Dip and Delta-Resonance Regions.

Peterson, G.A.; Dubach, J.F.; Hicks, R.S.; Miskimen, R.A.

1992-06-01T23:59:59.000Z

389

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

390

Atomic Physics and Thermonuclear Fusion Research  

Science Journals Connector (OSTI)

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

H W Drawin

1981-01-01T23:59:59.000Z

391

Efficiency measurements of TPV cells  

SciTech Connect

An apparatus for measuring TPV cell efficiencies at different radiation intensities and for different graybody emitter temperatures has been constructed. The apparatus has been used for measuring V-I characteristics, efficiencies and fill factors for several InGaAs TPV cells. Measured results are used to determine how cells may function together with edge filters, and those results are compared with theory. {copyright} {ital 1997 American Institute of Physics.}

Broman, L.; Jarefors, K. [Solar Energy Research Center, Hoegskolan Dalarna, S-781 88 Borlaenge (Sweden); Marks, J. [Department of Operational Efficiency, Swedish University of Agricultural Sciences, Box 7060, S-750 07 Uppsala (Sweden); Wanlass, M. [National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401-3393 (United States of America)

1997-03-01T23:59:59.000Z

392

On the physical basis of cosmic time  

E-Print Network (OSTI)

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

Svend Erik Rugh; Henrik Zinkernagel

2008-05-13T23:59:59.000Z

393

Top Quark Measurements  

E-Print Network (OSTI)

Ten years after its discovery at the Tevatron collider, we still know little about the top quark. Its large mass suggests it may play a key role in the mechanism of Electroweak Symmetry Breaking (EWSB), or open a window of sensitivity to new physics related to EWSB and preferentially coupled to it. To determine whether this is the case, precision measurements of top quark properties are necessary. The high statistics samples being collected by the Tevatron experiments during Run II start to incisively probe the top quark sector. This report summarizes the experimental status of the top quark, focusing in particular on the recent measurements from the Tevatron Run II.

A. Juste

2005-12-20T23:59:59.000Z

394

Magnetic field measurement of superconducting dipolemagnets with harmonic coil and Hall probe  

SciTech Connect

Magnetic field measurements and field analyses of 1-m long superconducting dipole magnets fabricated at the National Laboratory for High Energy Physics (KEK) have been carried out using a harmonic coil with the bucking scheme. Conditions of the data acquisition are optimized to achieve the accurate and efficient measurements. Not only in the steady state of the magnet excitation by constant currents, but also on the way the excite current increases until the magnet quenches the field measurements have been tried, and the results are discussed in this paper on the possibility of the {open_quotes}on-the-fly{close_quotes} measurement using a harmonic coil. Some results on the so-called remnant field of the magnets measured with a Hall probe are also described.

Nakai, Hirotaka; Kabe, Atsushi; Terashima, Akio [National Lab. for High Energy Physics, Tsukuba-shi, Ibaraki-ken (Japan)] [and others

1996-12-31T23:59:59.000Z

395

vibration measurement  

Science Journals Connector (OSTI)

vibration measurement ? Erschtterungsmessung, Schwingungsmessung f [Schwingungsmessungen dienen dazu, die Schwingungsanflligkeit von Bauwerken realittsnah zu erfassen

2014-08-01T23:59:59.000Z

396

M.S. Physics Program M.S. in Physics  

E-Print Network (OSTI)

M.S. Physics Program M.S. in Physics Department(s) Physics and Astronomy College Sciences 1 for later reference. 1. understanding of a variety of fields of physics at the graduate level 2. performance of a physics research project suitable for a masters thesis 3. ability to communicate scientific research

Hemmers, Oliver

397

Albert Macrander named American Physical Society Fellow  

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

Michael Borland named American Physical Society Fellow Michael Borland named American Physical Society Fellow Grad student is officially a GEMS NIU physicist Susan Mini lands NSF grant for APS beamline upgrades Argonne's Campuzano Honored by Hispanic Engineering Bugs in the News APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Albert Macrander named American Physical Society Fellow DECEMBER 10, 2007 Bookmark and Share Albert Macrander Albert Macrander of the Argonne X-ray Science Division (XSD) has been elected a Fellow of the American Physical Society. The Fellowship citation is for "advancement of x-ray science, x-ray optics, and x-ray measurements on crystals and for his leadership as Editor of the Review of Scientific Instruments."

398

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

399

Fundamental Physics Highlights | Neutron Science | ORNL  

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

Fundamental Physics Fundamental Physics SHARE Fundamental Physics Highlights 1-3 of 3 Results Neutron experiments give unprecedented look at quantum oscillations October 23, 2012 - Researchers at the Department of Energy's Oak Ridge National Laboratory have found that nitrogen atoms in the compound uranium nitride exhibit unexpected, distinct vibrations that form a nearly ideal realization of a physics textbook model known as the isotropic quantum harmonic oscillator. Beam Line 13 Fuels Discovery Fever for Fundamental Physicists June 01, 2011 - Kucuker Dogan (left) and Matthew Musgrave prepare a helium-3 cooling cell that is used to measure the angle at which the neutron beam strikes the liquid hydrogen sample. Fast Proton Hopping in Ice (Ih) Confirmed by Quasi-Elastic Neutron

400

A New Ontological View of the Quantum Measurement Problem  

E-Print Network (OSTI)

A new ontological view of the quantum measurement processes is given, which has bearings on many broader issues in the foundations of quantum mechanics as well. In this scenario a quantum measurement is a non-equilibrium phase transition in a ``resonant cavity'' formed by the entire physical universe including all of its material and energy content. A quantum measurement involves the energy and matter exchange among not only the system being measured and the measuring apparatus but also the global environment of the universe resonant cavity, which together constrain the nature of the phase transition. Strict realism, including strict energy and angular momentum conservation, is recovered in this view of the quantum measurement process beyond the limit set by the uncertainty relations, which are themselves derived from the exact commutation relations for quantum conjugate variables. Both the amplitude and the phase of the quantum mechanical wavefunction acquire substantial meanings in the new ontology, and the probabilistic element is removed from the foundations of quantum mechanics, its apparent presence in the quantum measurement being solely a result of the sensitive dependence on initial/boundary conditions of the phase transitions of a many degree-of-freedom system which is effectively the whole universe. Vacuum fluctuations are viewed as the ``left over'' fluctuations after forming the whole numbers of nonequilibrium resonant modes in the universe cavity. This new view on the quantum processes helps to clarify many puzzles in the foundations of quantum mechanics.

Xiaolei Zhang

2005-06-13T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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401

Proposed Laser-Based HED physics experiments for Stockpile Stewardship  

SciTech Connect

An analysis of the scientific areas in High Energy Density (HED) physics that underpin the enduring LANL mission in Stockpile Stewardship (SS) has identified important research needs that are not being met. That analysis has included the work done as part of defining the mission need for the High Intensity Laser Laboratory (HILL) LANL proposal to NNSA, LDRD DR proposal evaluations, and consideration of the Predictive Capability Framework and LANL NNSA milestones. From that evaluation, we have identified several specific and scientifically-exciting experimental concepts to address those needs. These experiments are particularly responsive to physics issues in Campaigns 1 and 10. These experiments are best done initially at the LANL Trident facility, often relying on the unique capabilities available there, although there are typically meritorious extensions envisioned at future facilities such as HILL, or the NIF once the ARC short-pulse laser is available at sufficient laser intensity. As the focus of the LANL HEDP effort broadens from ICF ignition of the point design at the conclusion of the National Ignition Campaign, into a more SS-centric effort, it is useful to consider these experiments, which address well-defined issues, with specific scientific hypothesis to test or models to validate or disprove, via unit-physics experiments. These experiments are in turn representative of a possible broad experimental portfolio to elucidate the physics of interest to these campaigns. These experiments, described below, include: (1) First direct measurement of the evolution of particulates in isochorically heated dense plasma; (2) Temperature relaxation measurements in a strongly-coupled plasma; (3) Viscosity measurements in a dense plasma; and (4) Ionic structure factors in a dense plasma. All these experiments address scientific topics of importance to our sponsors, involve excellent science at the boundaries of traditional fields, utilize unique capabilities at LANL, and contribute to the Campaign milestone in 2018. Given their interdisciplinary nature, it is not surprising that these research needs are not being addressed by the other excellent high-energy density physics (HEDP) facilities coming on line, facilities aimed squarely at more established fields and missions. Although energy rich, these facilities deliver radiation (e.g., particle beams for isochoric heating) over a timescale that is too slow in these unit physics experiments to eliminate hydrodynamic evolution of the target plasma during the time it is being created. A theme shared by all of these experiments is the need to quickly create a quasi-homogeneous 'initial state' whose properties and evolution we wish to study. Otherwise, we cannot create unit experiments to isolate the physics of interest and validate the models in our codes, something that cannot be done with the integrated experiments often done in HED. Moreover, these experiments in some cases involve combinations of solid and plasmas, or matter in the warm-dense matter state, where neither the theoretical approximations of solid state or of fully-ionized weakly-coupled plasmas can be used. In all cases, the capability of 'isochoric heating' ('flash' heating at constant density) is important. In some cases, the ability to selectively heat to different degrees different species within a target, whether mixed or adjacent to each other, is critical for the experiment. This capability requires the delivery of very high power densities, which require the conversion of the laser into very short and intense pulses of secondary radiation (electrons, ions, neutrons, x-rays). Otherwise, there is no possibility of a clean experiment to constrain the models, in the cases there are any, or inform the creation of one. Another typical requirement of these experiments is the ability to probe these exotic extreme conditions of matter with flexible and diverse sources of secondary radiation. Without a high-intensity high-power laser with some unique attributes available on Trident today (e.g., ultra-high laser-puls

Benage, John F. [Los Alamos National Laboratory; Albright, Brian J. [Los Alamos National Laboratory; Fernandez, Juan C. [Los Alamos National Laboratory

2012-09-04T23:59:59.000Z

402

A Structure-Preserving Model and Sufficient Condition for Frequency Synchronization of Lossless Droop Inverter-Based AC Networks  

SciTech Connect

This paper presents a new method for analysis of frequency synchronization of lossless power networks whose sources are frequency-droop controlled inverters. Unlike most existing approaches, our method focuses on the interaction between inverters and the network to provide new physical insight into how those interactions create frequency synchronization. We introduce two structure-preserving models of such a network (one bus-oriented and one line-oriented), and show that frequency synchronization corresponds to convergence to an equilibrium of these models. We derive a necessary condition for existence of such equilibria, and determine a simple test for their local stability. Finally, we introduce a sufficient condition for frequency synchronization of such networks, and show that it consists of a set of local criteria which can each be determined from local measurements.

Ainsworth, Nathan G [ORNL] [ORNL; Grijalva, Prof. Santiago [Georgia Institute of Technology, Atlanta] [Georgia Institute of Technology, Atlanta

2013-01-01T23:59:59.000Z

403

Toward a constructive physics  

SciTech Connect

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

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

1983-06-01T23:59:59.000Z

404

Seal inlet disturbance boundary conditions for rotordynamic models and influence of some off-design conditions on labyrinth rotordynamic instability  

E-Print Network (OSTI)

the swirl slip velocity. The benefits of using the new seal-inlet boundary condition correlations were assessed by implementing them into a CFD-perturbation model. Consistently improved agreement with measurements was obtained for both liquid annular seals...

Xi, Jinxiang

2007-04-25T23:59:59.000Z

405

CLICdp Overview: Overview of physics potential at CLIC  

E-Print Network (OSTI)

CLICdp, the CLIC detector and physics study, is an international collaboration presently composed of 23 institutions. The collaboration is addressing detector and physics issues for the future Compact Linear Collider (CLIC), a high-energy electron-positron accelerator which is one of the options for the next collider to be built at CERN. Precision physics under challenging beam and background conditions is the key theme for the CLIC detector studies. This leads to a number of cutting-edge R&D activities within CLICdp. The talk includes a brief introduction to CLIC, accelerator and detectors, hardware R&D as well as physics studies at CLIC.

Levy, A

2015-01-01T23:59:59.000Z

406

Physical Characteristics of Synthetic Rubbers  

Science Journals Connector (OSTI)

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

J. N. Street; J. H. Dillon

1941-01-01T23:59:59.000Z

407

AUSTRALIAN NATIONAL UNIVERSITY DEPARTMENT OF NUCLEAR PHYSICS  

E-Print Network (OSTI)

AUSTRALIAN NATIONAL UNIVERSITY DEPARTMENT OF NUCLEAR PHYSICS 14UD TAI'1K OPENING REPORT No. 39 5th. Measurements made with a test corona assembly suggest a production rate of reactive fluorine in the accelerator that the circulating gas passes first through the Vivalyme, then through the alumina (35/8). At 2.30 p.m. recirculation

Chen, Ying

408

Polarized photon facilities - windows to new physics  

SciTech Connect

The status of new and proposed sources of intermediate-energy polarized photons is reviewed. The N {r_arrow} {delta} transition is discussed as an example of new physics that can be addressed at these facilities through precision measurements of polarization observables.

Sandorfi, A.M.

1995-12-31T23:59:59.000Z

409

LFS Exhibit B Special Conditions  

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

B (Rev. 9, 12/13/12) Exhibit B Special Conditions B (Rev. 9, 12/13/12) Exhibit B Special Conditions Dated 5-20-13 Subcontract No. 241314 Page 1 of 11 EXHIBIT "B" SPECIAL CONDITIONS TABLE OF CONTENTS SC Title Page SC-2 AUTHORITY OF PERSONNEL (Apr 2012) ............................................................................... 2 SC-3A COMMENCEMENT, PROGRESS AND COMPLETION OF THE WORK (Jun 2009 - Deviation) ................................................................................................................................... 3 SC-10B INSURANCE REQUIREMENTS (Jan 2010) ............................................................................. 3 SC-11B INVOICING AND PAYMENT (Mar 2012) .................................................................................. 5

410

CPFFS Exhibit A General Conditions  

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

2, 6/14/13) Exhibit A General Conditions 2, 6/14/13) Exhibit A General Conditions Page 1 of 20 EXHIBIT "A" GENERAL CONDITIONS TABLE OF CONTENTS GC Title Page GC-1 DEFINITIONS (Aug 2012) .......................................................................................................... 3 GC-2A AUTHORIZED REPRESENTATIVES, COMMUNICATIONS AND NOTICES (Jan 2010) ........................................................................................................................................... 3 GC-3 INDEPENDENT CONTRACTOR (Jun 2009) ............................................................................. 4 GC-4 SUBCONTRACT INTERPRETATION (Jun 2009) ...................................................................... 4 GC-5 NOTICE TO PROCEED (Jul 2011)............................................................................................. 4

411

EFS Exhibit A General Conditions  

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

2, 6/14/13) Exhibit A General Conditions 2, 6/14/13) Exhibit A General Conditions Page 1 of 26 EXHIBIT "A" GENERAL CONDITIONS TABLE OF CONTENTS GC Title Page GC-1 DEFINITIONS (Aug 2012) .......................................................................................................... 3 GC-2 AUTHORIZED REPRESENTATIVES, COMMUNICATIONS AND NOTICES (Apr 2013) ........................................................................................................................................... 3 GC-3 INDEPENDENT CONTRACTOR (Jun 2009) ............................................................................. 4 GC-4 SUBCONTRACT INTERPRETATION (Jun 2009) ...................................................................... 4 GC-5 NOTICE TO PROCEED (Jul 2011)............................................................................................. 4

412

EFS Exhibit A General Conditions  

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

1, 4/9/13) Exhibit A General Conditions 1, 4/9/13) Exhibit A General Conditions Page 1 of 39 EXHIBIT "A" GENERAL CONDITIONS TABLE OF CONTENTS GC Title Page GC-1 DEFINITIONS (Aug 2012) .......................................................................................................... 3 GC-2 AUTHORIZED REPRESENTATIVES, COMMUNICATIONS AND NOTICES (Apr 2013) ........................................................................................................................................... 3 GC-3 INDEPENDENT CONTRACTOR (Jun 2009) ............................................................................. 4 GC-4 SUBCONTRACT INTERPRETATION (Jun 2009) ...................................................................... 4 GC-5 NOTICE TO PROCEED (Jul 2011)............................................................................................. 4

413

AES Exhibit A General Conditions  

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

2, 6/14/13) Exhibit A General Conditions 2, 6/14/13) Exhibit A General Conditions Page 1 of 18 EXHIBIT "A" GENERAL CONDITIONS TABLE OF CONTENTS GC Title Page GC-1 DEFINITIONS (Aug 2012) .......................................................................................................... 3 GC-2A AUTHORIZED REPRESENTATIVES, COMMUNICATIONS AND NOTICES (Jan 2010) ........................................................................................................................................... 3 GC-3 INDEPENDENT CONTRACTOR (Jun 2009) ............................................................................. 4 GC-4 SUBCONTRACT INTERPRETATION (Jun 2009) ...................................................................... 4 GC-5 NOTICE TO PROCEED (Jul 2011)............................................................................................. 4

414

SFS Exhibit A General Conditions  

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

2, 6/14/13) Exhibit A General Conditions 2, 6/14/13) Exhibit A General Conditions Page 1 of 16 EXHIBIT "A" GENERAL CONDITIONS TABLE OF CONTENTS GC Title Page GC-1 DEFINITIONS (Aug 2012) .......................................................................................................... 3 GC-2A AUTHORIZED REPRESENTATIVES, COMMUNICATIONS AND NOTICES (Jan 2010) ........................................................................................................................................... 3 GC-3 INDEPENDENT CONTRACTOR (Jun 2009) ............................................................................. 4 GC-4 SUBCONTRACT INTERPRETATION (Jun 2009) ...................................................................... 4 GC-5 NOTICE TO PROCEED (Jul 2011)............................................................................................. 4

415

SFS Exhibit A General Conditions  

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

1, 4/9/13) Exhibit A General Conditions 1, 4/9/13) Exhibit A General Conditions Page 1 of 29 EXHIBIT "A" GENERAL CONDITIONS TABLE OF CONTENTS GC Title Page GC-1 DEFINITIONS (Aug 2012) .......................................................................................................... 3 GC-2A AUTHORIZED REPRESENTATIVES, COMMUNICATIONS AND NOTICES (Jan 2010) ........................................................................................................................................... 3 GC-3 INDEPENDENT CONTRACTOR (Jun 2009) ............................................................................. 4 GC-4 SUBCONTRACT INTERPRETATION (Jun 2009) ...................................................................... 4 GC-5 NOTICE TO PROCEED (Jul 2011)............................................................................................. 4

416

Physics 112 Thermodynamics and Statistical Physics Winter 2000 COURSE OUTLINE  

E-Print Network (OSTI)

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

California at Santa Cruz, University of

417

Physics Topics - Rotating Wall Machine - UW Plasma Physics  

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

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

418

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

419

PHYSICS & ASTRONOMY GRADUATE STUDENT HANDBOOK DEPARTMENT OF PHYSICS & ASTRONOMY  

E-Print Network (OSTI)

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

Tipple, Brett

420

Protein Folding as a Physical Stochastic Process  

E-Print Network (OSTI)

We model protein folding as a physical stochastic process as follows. The unfolded protein chain is treated as a random coil described by SAW (self-avoiding walk). Folding is induced by hydrophobic forces and other interactions, such as hydrogen bonding, which can be taken into account by imposing conditions on SAW. The resulting model is termed CSAW (conditioned self-avoiding walk. Conceptually, the mathematical basis is a generalized Langevin equation. In practice, the model is implemented on a computer by combining SAW and Monte Carlo. To illustrate the flexibility and capabilities of the model, we consider a number of examples, including folding pathways, elastic properties, helix formation, and collective modes.

Kerson Huang

2007-07-17T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" 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

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

SciTech Connect

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

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

2007-01-01T23:59:59.000Z

422

Comparision of neoclassical rotation theory with experiment under a variety of conditions in DIII-D  

Science Journals Connector (OSTI)

A neoclassical theory of gyroviscous radial momentum transport and poloidal and toroidal rotation has been compared with experiment in DIII-D [Luxon Anderson Batty et al. Plasma Physics and Controlled Nuclear Fusion Research 1986 (IAEA Vienna 1987) Vol. 1 p. 159] discharges in different confinement regimes with a range of neutral beam powers and with co- and counter-injection and with various types of dominant impurity species present. Calculated central toroidal rotation velocities and momentum confinement times agreed with experiment over a wide range of these conditions with one notable exception in which a drift correction may be needed to reduce the gyroviscous toroidal force. Radial distributions of toroidal and poloidal rotation velocities and radial electric field calculated using the radial distribution of toroidalangular momentum input density agreed with measured distributions for the one time in an L-mode discharge that was examined in detail.

W. M. Stacey; J. Mandrekas

2002-01-01T23:59:59.000Z

423

Reservoir vital signs monitoring, 1990: Physical and chemical characteristics of water and sediments  

SciTech Connect

As part of Tennessee Valley Authority`s (TVA`s) Reservoir Vital Signs Monitoring program, physical/chemical measurements of water and sediment were made in 1990 on twelve TVA reservoirs (the nine main steam Tennessee river reservoirs - Kentucky through Fort Loudoun and three major tributary reservoirs - Cherokee, Douglas, and Norris). The objective of this monitoring program is to assess the health or integrity of these aquatic ecosystems. The physical/chemical water quality data collected in 1990 showed the water quality of these reservoirs to be very good. However, hypolimnetic anoxia during the summer months in Watts bars, Douglas, and Cherokee reservoir continues to be a concern. High concentrations of nutrients were measured in the transition zones of Cherokee and Douglas reservoirs, resulting in highly productive and eutrophic conditions in the transition zones of these reservoirs. Fecal coliform organisms were frequently detected in the forebay area of Guntersville reservoir, and higher than expected ammonia nitrogen concentrations were found at the transition zone of Wheeler reservoir. Elevated concentrations of mercury were found in Pickwick and Watts bar reservoir sediment, and high lead concentrations were found in a sediment sample collected from Guntersville reservoir. A TVA Reservoir Water Quality Index (RWQI) was developed and used to summarize water quality conditions on a scale from 0 (worst) to 100 (best).

Meinert, D.L.

1991-05-01T23:59:59.000Z

424

Reservoir vital signs monitoring, 1990: Physical and chemical characteristics of water and sediments  

SciTech Connect

As part of Tennessee Valley Authority's (TVA's) Reservoir Vital Signs Monitoring program, physical/chemical measurements of water and sediment were made in 1990 on twelve TVA reservoirs (the nine main steam Tennessee river reservoirs - Kentucky through Fort Loudoun and three major tributary reservoirs - Cherokee, Douglas, and Norris). The objective of this monitoring program is to assess the health or integrity of these aquatic ecosystems. The physical/chemical water quality data collected in 1990 showed the water quality of these reservoirs to be very good. However, hypolimnetic anoxia during the summer months in Watts bars, Douglas, and Cherokee reservoir continues to be a concern. High concentrations of nutrients were measured in the transition zones of Cherokee and Douglas reservoirs, resulting in highly productive and eutrophic conditions in the transition zones of these reservoirs. Fecal coliform organisms were frequently detected in the forebay area of Guntersville reservoir, and higher than expected ammonia nitrogen concentrations were found at the transition zone of Wheeler reservoir. Elevated concentrations of mercury were found in Pickwick and Watts bar reservoir sediment, and high lead concentrations were found in a sediment sample collected from Guntersville reservoir. A TVA Reservoir Water Quality Index (RWQI) was developed and used to summarize water quality conditions on a scale from 0 (worst) to 100 (best).

Meinert, D.L.

1991-05-01T23:59:59.000Z

425

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

426

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

427

Physical process Mechanical mechanisms  

E-Print Network (OSTI)

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

Berlin,Technische Universität

428

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) University of Connecticut alan.wuosmaa@uconn.edu The...

429

Introduction to flavor physics  

E-Print Network (OSTI)

This set of lectures covers the very basics of flavor physics and are aimed to be an entry point to the subject. A lot of problems are provided in the hope of making the manuscript a self study guide.

Yuval Grossman

2010-06-17T23:59:59.000Z

430

Current Physics Information  

Science Journals Connector (OSTI)

...MARKS, R.H., MAY CONV NAT MICR AS ( 1971 ). ROBERTS, L.G., AFIPS C P 36 : 543 ( 1970 ). ZIMAN, J.M., INFORMATION, COMMUNICATION, KNOWLEDGE, NATURE 224 : 318 ( 1969 ). Current physics information. | A new concept in science...

H. William Koch

1971-11-26T23:59:59.000Z

431

Nuclear Physics | Jefferson Lab  

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

Proposal PAC Review Scheduling Processes top-right bottom-left-corner bottom-right-corner Nuclear Physics Scientists from across the country and around the world use the Thomas...

432

ENVIRONMENTAL PHYSICS METHODS  

E-Print Network (OSTI)

of Physics Reader: Árpád Zoltán Kiss Professor Emeritus, Hungarian Academy of Sciences, Institute of Nuclear, dosimetry, ionizing radiation, radon, gamma- spectroscopy, positron emission tomography. SUMMARY

Horváth, Ákos

433

Physical Protection Program  

Directives, Delegations, and Requirements

Establishes Department of Energy management objectives, requirements and responsibilities for the physical protection of safeguards and security interests. Cancels DOE 5632.1C. Canceled by DOE O 470.4.

2002-12-23T23:59:59.000Z

434

Director, Physics Research Division  

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

The Department of Energy, Office of Science, Office of the Deputy Director for Science Programs, Office of Nuclear Physics is seeking a motivated and highly qualified individual to service as the...

435

B Physics at LHC  

E-Print Network (OSTI)

Three experiments, among the LHC project, are getting ready to explore the b quark flavour sector. While ATLAS and CMS are general purpose experiments, where the study of B mesons is going to proceed in parallel with the Higgs boson and supersymmetry searches, the LHCb experiment is devoted to B physics studies. The key parameters entering the physics analyses and the performances achieved in all the three experiments are presented. Given the large B physics program foreseen in the LHC experiments, the studies reported in this paper have been selected as those with higher likelihood to provide solid and interesting new results on Standard Model validation and New Physics processes search with early data.

A. Sarti

2008-09-02T23:59:59.000Z

436

Physical chemistry - Thermodynamics  

Science Journals Connector (OSTI)

Physical chemistry - Thermodynamics ... A style of question that allows the instructor of thermodynamics to cover a wide range of material at varying levels of achievement in a reasonable period of time. ... Thermodynamics ...

Jack Richlin

1982-01-01T23:59:59.000Z

437

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,

438

Multi-Domain Modeling and Simulation of Automotive Air Conditioning System Based On Modelica  

Science Journals Connector (OSTI)

The automotive air conditioning (AC) systems are complex systems where two-phase flow, pneumatic, mechanical and electrical components are coupled. Such systems coupled with various physical domains have great...

Jing Li; Yunqing Zhang

2013-01-01T23:59:59.000Z

439

Science is measurement: muons, money and the Nobel Prize  

Science Journals Connector (OSTI)

This article investigates the difference in measurement methods between contemporary particle physics and economics. The book Measurement in Economics: A Handbook, (Boumans, 2007), is used to present the current state of measurement technique in economics. These views are compared with the measurement of the anomalous magnetic moment of the muon. Particle physics is realist in measurement while economics is not. The reality check on theory that measurement provides in particle physics is conspicuously absent in economics. However, the nature of the social world precludes the use of the same measurement approach.

Jeffrey David Turk

2011-01-01T23:59:59.000Z

440

Gravitation Physics at BGPL  

E-Print Network (OSTI)

We report progress on a program of gravitational physics experiments using cryogenic torsion pendula undergoing large-amplitude torsion oscillation. This program includes tests of the gravitational inverse square law and of the weak equivalence principle. Here we describe our ongoing search for inverse-square-law violation at a strength down to $10^{-5}$ of standard gravity. The low-vibration environment provided by the Battelle Gravitation Physics Laboratory (BGPL) is uniquely suited to this study.

P. E. Boynton; R. M. Bonicalzi; A. M. Kalet; A. M. Kleczewski; J. K. Lingwood; K. J. McKenney; M. W. Moore; J. H. Steffen; E. C. Berg; W. D. Cross; R. D. Newman; R. E. Gephart

2006-09-21T23:59:59.000Z

Note: This page contains sample records for the topic "measuring physical conditions" 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

Electroweak physics and physics beyond the Standard Model  

E-Print Network (OSTI)

We summarize the recent results on electroweak physics and physics beyond the Standard Model that have been presented at the XIV International Workshop on Deep Inelastic Scattering 2006.

L. Bellagamba; E. Sauvan; H. Spiesberger

2006-07-25T23:59:59.000Z

442

The Institute of Physics and the Physical Society  

Science Journals Connector (OSTI)

... transfer of the assets of the Society to the newly amalgamated body, the Institute of Physics and the Physical Society, were unanimously carried.

1960-11-05T23:59:59.000Z

443

Proceedings of the workshop on B physics at hadron accelerators  

SciTech Connect

This report contains papers on the following topics: Measurement of Angle {alpha}; Measurement of Angle {beta}; Measurement of Angle {gamma}; Other B Physics; Theory of Heavy Flavors; Charged Particle Tracking and Vertexing; e and {gamma} Detection; Muon Detection; Hadron ID; Electronics, DAQ, and Computing; and Machine Detector Interface. Selected papers have been indexed separately for inclusion the in Energy Science and Technology Database.

McBride, P. [Superconducting Super Collider Lab., Dallas, TX (United States); Mishra, C.S. [Fermi National Accelerator Lab., Batavia, IL (United States)] [eds.

1993-12-31T23:59:59.000Z

444

University of Ljubljana Faculty of Mathematics and Physics  

E-Print Network (OSTI)

University of Ljubljana Faculty of Mathematics and Physics Seminar The Weak Measurement in Quantum is the weak measurement and its corresponding weak value. The normal and double Stern-Gerlach experiment is explained, the latter being used as an example of how to conduct the weak measurement and what we get

Ramsak, Anton

445

Particle control in the sustained spheromak physics experiment  

Science Journals Connector (OSTI)

In this paper we report on density and impurity measurements in the sustained spheromak physics experiment (SSPX) which has recently started operation. The SSPX plasma is sustained by coaxial helicity injection for a duration of 2 ms with peak toroidal currents of up to 0.5 MA. Plasma-facing components consist of tungsten-coated copper to minimize sputtering. The surfaces are conditioned by a combination of baking at 150C, glow discharge cleaning, titanium gettering, and pulse-discharge cleaning with helium plasmas. In this way we achieve density control with ne?141020m?3. However, gas input has only a weak effect on plasma density; injector current is the dominant factor. Conditioning reduces the impurity radiation to the point where it is no longer important to the energy balance, so that the lifetime of the spheromak discharge is ultimately governed by MHD activity, which grows rapidly about 1.52.0 ms after helicity injection ends.

R.D. Wood; D.N. Hill; E.B. Hooper; D. Buchenauer; H. McLean; Z. Wang; S. Woodruff; G. Wurden

2001-01-01T23:59:59.000Z

446

General conditions for quantum adiabatic evolution  

SciTech Connect

Adiabaticity occurs when, during its evolution, a physical system remains in the instantaneous eigenstate of the Hamiltonian. Unfortunately, existing results, such as the quantum adiabatic theorem based on a slow down evolution [H({epsilon}t),{epsilon}{yields}0], are insufficient to describe an evolution driven by the Hamiltonian H(t) itself. Here we derive general criteria and exact bounds, for the state and its phase, ensuring an adiabatic evolution for any Hamiltonian H(t). As a corollary, we demonstrate that the commonly used condition of a slow Hamiltonian variation rate, compared to the spectral gap, is indeed sufficient to ensure adiabaticity but only when the Hamiltonian is real and nonoscillating (for instance, containing exponential or polynomial but no sinusoidal functions)

Comparat, Daniel [Laboratoire Aime Cotton, CNRS, Universite Paris-Sud, Batiment 505, 91405 Orsay (France)

2009-07-15T23:59:59.000Z

447

Carl von Ossietzky University Oldenburg Faculty V -Institute of Physics Module Introductory laboratory course physics Part I  

E-Print Network (OSTI)

laboratory course physics ­ Part I Error theory and regression analysis Keywords: Result of a measurement, linear regression. References: /1/ BIPM1 : "Evaluation of measurement data -- Guide to the expression of uncertainty in measurement" (GUM), 2008 http://www.bipm.org/utils/common/documents/jcgm/JCGM_100_2008_E.pdf /2

Peinke, Joachim

448

Approximate joint measurement of qubit observables through an Arthur-Kelly type model  

E-Print Network (OSTI)

We consider joint measurement of two and three unsharp qubit observables through an Arthur-Kelly type joint measurement model for qubits. We investigate the effect of initial state of the detectors on the unsharpness of the measurement as well as the post-measurement state of the system. Particular emphasis is given on a physical understanding of the POVM to PVM transition in the model and entanglement between system and detectors.Two approaches for characterizing the unsharpness of the measurement and the resulting measurement uncertainty relations are considered.The corresponding measures of unsharpness are connected for the case where both the measurements are equally unsharp. The connection between the POVM elements and symmetries of the underlying Hamiltonian of the measurement interaction is made explicit and used to perform joint measurement in arbitrary directions. Finally in the case of three observables we derive a necessary condition for the approximate joint measurement and use it show the relative freedom available when the observables are non-orthogonal.

Rajarshi Pal; Sibasish Ghosh

2013-06-17T23:59:59.000Z

449

Boston University Physics Colloquium Final Results from MuLan  

E-Print Network (OSTI)

Energy Muons Three of the most important inputs to the Standard Model of Elementary particle physicsBoston University Physics Colloquium Final Results from MuLan: A High Energy Experiment with Low through measurements of the muon lifetime. Until 1999, incomplete theoretical calculations limited

450

Neutrino facility and neutrino physics in J-PARC  

Science Journals Connector (OSTI)

......pulse. The repetition rate of the operation cycle...decay above 5 GeV/c pass through the beam dump...along with measuring rates for exclusive neutrino...by INGRID. The event rate in INGRID (1.5 events...beam direction. 3.2. Physics results Physics results......

Tetsuro Sekiguchi

2012-01-01T23:59:59.000Z

451

ORISE: Applied health physics projects  

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

Applied health physics projects The Oak Ridge Institute for Science and Education (ORISE) provides applied health physics services to government agencies needing technical support...

452

Stellarators | Princeton Plasma Physics Lab  

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

in stellarators By John Greenwald Researchers at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) and the Max Planck Institute of Plasma Physics...

453

Importance of Design Conditions for Sizing Air-Conditioning Plant  

E-Print Network (OSTI)

Design conditions based on the meteorological data collected at two weather stations located less than 10 km away from each other within Kuwait City are presented for dry-bulb temperature (DBT) and web-bulb temperature (WBT) prioritization...

Shaban, N.; Maheshwari, G. P.; Suri, R. K.

2000-01-01T23:59:59.000Z

454

Measurement fundamentals  

SciTech Connect

The need to have accurate petroleum measurement is obvious. Petroleum measurement is the basis of commerce between oil producers, royalty owners, oil transporters, refiners, marketers, the Department of Revenue, and the motoring public. Furthermore, petroleum measurements are often used to detect operational problems or unwanted releases in pipelines, tanks, marine vessels, underground storage tanks, etc. Therefore, consistent, accurate petroleum measurement is an essential part of any operation. While there are several methods and different types of equipment used to perform petroleum measurement, the basic process stays the same. The basic measurement process is the act of comparing an unknown quantity, to a known quantity, in order to establish its magnitude. The process can be seen in a variety of forms; such as measuring for a first-down in a football game, weighing meat and produce at the grocery, or the use of an automobile odometer.

Webb, R.A. [Marathon Pipe Line Co., Findlay, OH (United States)

1995-12-01T23:59:59.000Z

455

The Oxford Questions on the foundations of quantum physics  

Science Journals Connector (OSTI)

...The twentieth century saw two fundamental revolutions in physics-relativity...their immense empirical success. Does their instrumental effectiveness...concepts or the sand of unresolved fundamentals? Does measuring a quantum system probe...

2013-01-01T23:59:59.000Z

456

Physical Characterization of Tropical Oceanic Convection Observed in KWAJEX  

Science Journals Connector (OSTI)

The Tropical Rainfall Measuring Mission (TRMM) Kwajalein Experiment (KWAJEX) was designed to obtain an empirical physical characterization of precipitating convective clouds over the tropical ocean. Coordinated datasets were collected by three ...

Sandra E. Yuter; Robert A. Houze Jr.; Eric A. Smith; Thomas T. Wilheit; Edward Zipser

2005-04-01T23:59:59.000Z

457

On the physical basis of cosmic time  

E-Print Network (OSTI)

In this manuscript we initiate a systematic examination of the physical basis for the time concept in cosmology. We discuss and defend the idea that the physical basis of the time concept is necessarily related to physical processes which could conceivably take place among the material constituents available in the universe. It is common practice to link the concept of cosmic time with a space-time metric set up to describe the universe at large scales, and then define a cosmic time $t$ as what is measured by a comoving standard clock. We want to examine, however, the physical basis for setting up a comoving reference frame and, in particular, what could be meant by a standard clock. For this purpose we introduce the concept of a `core' of a clock (which, for a standard clock in cosmology, is a scale-setting physical process) and we ask if such a core can--in principle--be found in the available physics contemplated in the various `stages' of the early universe. We find that a first problem arises above the q...

Rugh, Svend Erik

2008-01-01T23:59:59.000Z

458

Bayesian statistics in radionuclide metrology: measurement of a decaying source  

Science Journals Connector (OSTI)

The most intuitive way of defining a probability is perhaps through the frequency at which it appears when a large number of trials are realized in identical conditions. The probability derived from the obtained histogram characterizes the so-called frequentist or conventional statistical approach. In this sense, probability is defined as a physical property of the observed system. By contrast, in Bayesian statistics, a probability is not a physical property or a directly observable quantity, but a degree of belief or an element of inference. The goal of this paper is to show how Bayesian statistics can be used in radionuclide metrology and what its advantages and disadvantages are compared with conventional statistics. This is performed through the example of an yttrium-90 source typically encountered in environmental surveillance measurement. Because of the very low activity of this kind of source and the small half-life of the radionuclide, this measurement takes several days, during which the source decays significantly. Several methods are proposed to compute simultaneously the number of unstable nuclei at a given reference time, the decay constant and the background. Asymptotically, all approaches give the same result. However, Bayesian statistics produces coherent estimates and confidence intervals in a much smaller number of measurements. Apart from the conceptual understanding of statistics, the main difficulty that could deter radionuclide metrologists from using Bayesian statistics is the complexity of the computation.

Fran?ois O Bochud; Claude J Bailat; Jean-Pascal Laedermann

2007-01-01T23:59:59.000Z

459

Performance comparison of fiber optic tips in interferrometric displacement measurement  

SciTech Connect

Fiber optic displacement sensors have many potential advantages over traditional displacement measurement techniques, including small size, immunity to electromagnetic interference, electrical isolation, and high resolution. In this report, we focus on an interferometric fiber optic sensor, where the gap between the fiber tip and the device under test forms a Fabry-Perot resonant cavity. An optical interrogator measures the reflected intensity at wavelengths ranging from 1510 to 1590 nm. The spacing between resonant frequencies allows us to determine the distance from the tip to the device under test. We consider ferrule connector angled physical contact (FC/APC), ferrule connector ultra physical contact (FC/UPC) and unpolished cleaved tips and compare their influence on sensor performance. A plane wave propagation model is proposed for predicting tip effects. Comparisons are made on the basis of sensor measurement range, resolution, and sensitivity to changes in test conditions. In this paper, we discuss the experimental setup, detail our analysis, and present test results with recommendations for the applications of each tip.

Moro, Erik A [Los Alamos National Laboratory; Puckett, Anthony D [Los Alamos National Laboratory; Grahn, Rick [UNM; Karimi, Hussain [UCSD; Wilson, Kyle [ROSE HULMAN INSTITUTE OT TECH.

2010-10-21T23:59:59.000Z

460

General Chemistry Introduction: Definitions and Measurements  

E-Print Network (OSTI)

Measurements SI Fundamental Units of Measurement Physical Quantity (Dimension) Unit Name Abbreviation MassGeneral Chemistry Introduction: Definitions and Measurements CHM1050_3 *Aspartame ­ NutraSweetTM. 5 transformations and energy associated with those transformations. CHM1050_3 Chemistry: A Definition #12;CHM1050

Zakarian, Armen

Note: This page contains sample records for the topic "measuring physical conditions" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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461

High Energy Efficiency Air Conditioning  

SciTech Connect

This project determined the performance of a new high efficiency refrigerant, Ikon B, in a residential air conditioner designed to use R-22. The refrigerant R-22, used in residential and small commercial air conditioners, is being phased out of production in developed countries beginning this year because of concerns regarding its ozone depletion potential. Although a replacement refrigerant, R-410A, is available, it operates at much higher pressure than R-22 and requires new equipment. R-22 air conditioners will continue to be in use for many years to come. Air conditioning is a large part of expensive summer peak power use in many parts of the U.S. Previous testing and computer simulations of Ikon B indicated that it would have 20 - 25% higher coefficient of performance (COP, the amount of cooling obtained per energy used) than R-22 in an air-cooled air conditioner. In this project, a typical new R-22 residential air conditioner was obtained, installed in a large environmental chamber, instrumented, and run both with its original charge of R-22 and then with Ikon B. In the environmental chamber, controlled temperature and humidity could be maintained to obtain repeatable and comparable energy use results. Tests with Ikon B included runs with and without a power controller, and an extended run for several months with subsequent analyses to check compatibility of Ikon B with the air conditioner materials and lubricant. Baseline energy use of the air conditioner with its original R-22 charge was measured at 90 deg F and 100 deg F. After changeover to Ikon B and a larger expansion orifice, energy use was measured at 90 deg F and 100 deg F. Ikon B proved to have about 19% higher COP at 90 deg F and about 26% higher COP at 100 deg F versus R-22. Ikon B had about 20% lower cooling capacity at 90 deg F and about 17% lower cooling capacity at 100 deg F versus R-22 in this system. All results over multiple runs were within 1% relative standard deviation (RSD). All of these values agree well with previous results and computer simulations of Ikon B performance versus R-22. The lower cooling capacity of Ikon B is not a concern unless a particular air conditioner is near its maximum cooling capacity in application. Typically, oversized A/C systems are installed by contractors to cover contingencies. In the extended run with Ikon B, which lasted about 4.5 months at 100 deg F ambient temperature and 68% compressor on time, the air conditioner performed well with no significant loss of energy efficiency. Post-run analysis of the refrigerant, compressor lubricant oil, compressor, compressor outlet tubing, and the filter/dryer showed minor effects but nothing that was considered significant. The project was very successful. All objectives were achieved, and the performance of Ikon B indicates that it can easily be retrofitted into R-22 air conditioners to give 15 - 20% energy savings and a 1 - 3 year payback of retrofit costs depending on location and use. Ikon B has the potential to be a successful commercial product.

Edward McCullough; Patrick Dhooge; Jonathan Nimitz

2003-12-31T23:59:59.000Z

462

Physics 122 Fundamentals of Physics II Syllabus for Fall 2012  

E-Print Network (OSTI)

Physics 122 ­ Fundamentals of Physics II Syllabus for Fall 2012 Course description The second of a two-semester series in general physics. The course is a continuation of PHYS 121, and covers waves, electricity and magnetism, optics, and modern physics. This survey course, together with PHYS 121, generally

Lathrop, Daniel P.

463

Review for Physics in Perspective The Philosophy of Physics  

E-Print Network (OSTI)

Review for Physics in Perspective The Philosophy of Physics Roberto Torretti, The Philosophy of Physics. Cambridge: Cambridge University Press, 1999, xvi + 512 pages. US$ ??. ISBN: 0 521 56259 7 (cloth This is an excellent book, by a very distinguished historian and philosopher of physics. Roberto Torretti

Cheng, Eugenia

464

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.

465

Physical Earth Science Is Physical Earth Science right for me?  

E-Print Network (OSTI)

Physical Earth Science Is Physical Earth Science right for me? If you are interested in learning a Physical Earth Science degree. The skills you will gain are wide-ranging and will provide a good basis for employment in almost any sector. Are all Physical Earth Science degrees the same? Universities do not have

Harman, Neal.A.

466

PHYSICS 237 SPRING 2006 Nuclear and Elementary Particle Physics  

E-Print Network (OSTI)

. K. Robinson Data Reduction and Error Analysis for the Physical Sciences QA278 .B48 2003 J. M. BlattPHYSICS 237 SPRING 2006 Nuclear and Elementary Particle Physics BOOKS ON RESERVE IN CRERAR LIBRARY 1987 K. S. Krane Introductory Nuclear Physics QC777.K730 1988 Useful references P. R. Bevington and D

467

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

468

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

469

E-Print Network 3.0 - air fluorescence measurements Sample Search...  

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

naphthalene with laser-induced fluorescence M. Martinez... and Physics Discussions Measuring ... Source: Ecole Polytechnique, Centre de mathmatiques Collection:...

470

Fuzzy Systems for Condition Monitoring  

Science Journals Connector (OSTI)

The chapter presents the application of Fuzzy Set Theory (FST) and fuzzy ARTMAP (Adaptive Resonance Theory Mapping) to diagnose the condition of high voltage bushings. The diagnosis uses Dissolved Gas Analysis...

Tshilidzi Marwala

2012-01-01T23:59:59.000Z

471

Natural Air-Conditioning Systems  

Science Journals Connector (OSTI)

Recent research in summer air conditioning utilizing natural sources of coolness* are discussed. These systems are classified according to the sources of coolness, the modes of heat transfer and airflow, and t...

Mehdi N. Bahadori

1986-01-01T23:59:59.000Z

472

Electroweak Physics with ATLAS  

E-Print Network (OSTI)

The precision measurements of electroweak parameters of the Standard Model with the ATLAS detector at LHC are reviewed. An emphasis is put on the bridge connecting the ATLAS measurements with the SM analysis at LEP/SLC and the Tevatron.

Arif Akhundov

2008-08-13T23:59:59.000Z

473

Sampling Point Compliance Tests for 325 Building at Set-Back Flow Conditions  

SciTech Connect

The stack sampling system at the 325 Building (Radiochemical Processing Laboratory [RPL]) was constructed to comply with the American National Standards Institutes (ANSIs) Guide to Sampling Airborne Radioactive Materials in Nuclear Facilities (ANSI N13.1-1969). This standard provided prescriptive criteria for the location of radionuclide air-sampling systems. In 1999, the standard was revised (Sampling and Monitoring Releases of Airborne Radioactive Substances From the Stacks and Ducts of Nuclear Facilities [ANSI/Health Physics Society [HPS] 13.1-1999]) to provide performance-based criteria for the location of sampling systems. Testing was conducted for the 325 Building stack to determine whether the sampling system would meet the updated criteria for uniform air velocity and contaminant concentration in the revised ANSI/HPS 13.1-1999 standard under normal operating conditions (Smith et al. 2010). Measurement results were within criteria for all tests. Additional testing and modeling was performed to determine whether the sampling system would meet criteria under set-back flow conditions. This included measurements taken from a scale model with one-third of the exhaust flow and computer modeling of the system with two-thirds of the exhaust flow. This report documents the results of the set-back flow condition measurements and modeling. Tests performed included flow angularity, uniformity of velocity, gas concentration, and particle concentration across the duct at the sampling location. Results are within ANSI/HPS 13.1-1999 criteria for all tests. These tests are applicable for the 325 Building stack under set-back exhaust flow operating conditions (980 - 45,400 cubic feet per minute [cfm]) with one fan running. The modeling results show that criteria are met for all tests using a two-fan configuration exhaust (flow modeled at 104,000 cfm). Combined with the results from the earlier normal operating conditions, the ANSI/HPS 13.1-1999 criteria for all tests are met for all configurations: one, two, or three fans (normal).

Ballinger, Marcel Y.; Glissmeyer, John A.; Barnett, J. M.; Recknagle, Kurtis P.; Yokuda, Satoru T.

2011-05-31T23:59:59.000Z

474

Spectral conditions for positive maps  

E-Print Network (OSTI)

We provide a partial classification of positive linear maps in matrix algebras which is based on a family of spectral conditions. This construction generalizes celebrated Choi example of a map which is positive but not completely positive. It is shown how the spectral conditions enable one to construct linear maps on tensor products of matrix algebras which are positive but only on a convex subset of separable elements. Such maps provide basic tools to study quantum entanglement in multipartite systems.

Dariusz Chruscinski; Andrzej Kossakowski

2008-09-29T23:59:59.000Z

475

Reversing entanglement change by a weak measurement  

E-Print Network (OSTI)

PHYSICAL REVIEW A 82, 052323 (2010) Reversing entanglement change by a weak measurement Qingqing Sun,1,* M. Al-Amri,2 Luiz Davidovich,3 and M. Suhail Zubairy1 1Department of Physics and Institute for Quantum Science and Engineering, Texas A...

Sun, Qingqing; Al-Amri, M.; Davidovich, Luiz; Zubairy, M. Suhail.

2010-01-01T23:59:59.000Z

476

Experiments in intermediate energy physics  

SciTech Connect

Research in experimental nuclear physics was done from 1979 to 2002 primarily at intermediate energy facilities that provide pion, proton, and kaon beams. Particularly successful has been the work at the Los Alamos Meson Physics Facility (LAMPF) on unraveling the neutron and proton contributions to nuclear ground state and transition densities. This work was done on a wide variety of nuclei and with great detail on the carbon, oxygen, and helium isotopes. Some of the investigations involved the use of polarized targets which allowed the extraction of information on the spin-dependent part of the triangle-nucleon interaction. At the Indiana University Cyclotron Facility (IUCF) we studied proton-induced charge exchange reactions with results of importance to astrophysics and the nuclear few-body problem. During the first few years, the analysis of heavy-ion nucleus scattering data that had been taken prior to 1979 was completed. During the last few years we created hypernuclei by use of a kaon beam at Brookhaven National Laboratory (BNL) and an electron beam at Jefferson Laboratory (JLab). The data taken at BNL for a study of the non-mesonic weak decay of the A particle in a nucleus are still under analysis by our collaborators. The work at JLab resulted in the best resolution hypernuclear spectra measured thus far with magnetic spectrometers.

Dehnhard, D.

2003-02-28T23:59:59.000Z

477

Neutrino Physics: A Selective Overview  

E-Print Network (OSTI)

Neutrinos in the Standard Model of particle physics are massless, neutral fermions that seemingly do little more than conserve 4-momentum, angular momentum, lepton number, and lepton flavour in weak interactions. In the last decade conclusive evidence has demonstrated that the Standard Model's description of neutrinos does not match reality. We now know that neutrinos undergo flavour oscillations, violating lepton flavour conservation and implying that neutrinos have non-zero mass. A rich oscillation phenomenology then becomes possible, including matter-enhanced oscillation and possibly CP violation in the neutrino sector. Extending the Standard Model to include neutrino masses requires the addition of new fields and mass terms, and possibly new methods of mass generation. In this review article I will discuss the evidence that has established the existence of neutrino oscillation, and then highlight unresolved issues in neutrino physics, such as the nature of three-generational mixing (including CP-violating effects), the origins of neutrino mass, the possible existence of light sterile neutrinos, and the difficult question of measuring the absolute mass scale of neutrinos.

Scott M. Oser

2006-04-11T23:59:59.000Z

478

ARM - Measurements  

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

Measurement Instrument Sponsor Aircraft State PositionVelocity @ 10Hz Trimble DSM(tm) AAF PitchRollAzimuth Trimble Advanced Navigation System (TANS)10Hz AAF...

479

Shell Measures  

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

Residential Commercial Commercial Industrial Lighting Energy Smart Grocer Program HVAC Program Shell Measures Commercial Kitchen & Food Service Equipment Plug Load New...

480

Fusion energy | Princeton Plasma Physics Lab  

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

energy energy Subscribe to RSS - Fusion energy The energy released when two atomic nuclei fuse together. This process powers the sun and stars. Read more Two PPPL-led teams win increased supercomputing time to study conditions inside fusion plasmas Researchers led by scientists at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) have won highly competitive allocations of time on two of the world's fastest supercomputers. The increased awards are designed to advance the development of nuclear fusion as a clean and abundant source of energy for generating electricity. Read more about Two PPPL-led teams win increased supercomputing time to study conditions inside fusion plasmas Two PPPL-led teams win increased supercomputing time to study conditions

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


481

Top Quark Mass Measurements  

Science Journals Connector (OSTI)

First observed in 1995 the top quark is one of a pair of third?generation quarks in the Standard Model of particle physics. It has charge +2/3e and a mass of 171.4 GeV about 40 times heavier than its partner the bottom quark. The CDF and D collaborations have identified several hundred events containing the decays of top?antitop pairs in the large dataset collected at the Tevatron proton?antiproton collider over the last four years. They have used these events to measure the top quarks mass to nearly 1% precision and to study other top quark properties. The mass of the top quark is a fundamental parameter of the Standard Model and knowledge of its value with small uncertainty allows us to predict properties of the as?yet?unobserved Higgs boson. This paper presents the status of the measurements of the top quark mass. It is based on a talk I gave at the Conference on the Intersections of Particle and Nuclear Physics in Puerto Rico May 2006 which also included discussion of measurements of other top quark properties.

A. P. Heinson; CDF Collaboration; D Collaboration

2006-01-01T23:59:59.000Z

482

Laboratory I | Nuclear Physics Division  

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

CERN 73-11 CERN 73-11 Laboratory I | Nuclear Physics Division a 24 September 1973 ORGANISATION EUROPEENNE POUR LA RECHERCHE NUCLEAIRE C E R N EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH HIGH-ACCURACY MEASUREMENTS OF THE CENTRE OF GRAVITY OF AVALANCHES IN PROPORTIONAL CHAMBERS G. Charpak, A. Jeavons, F. Sauli and R. Stubbs G E N E V A 1973 © Copyright CERN, Geneve, 1973 Propriety litteraire et scientiflque reservee pour tous les pays du monde Ce document ne peut etre reproduit ou traduit en tout ou en partie sans Tautonsation 6cnte du Directeur g6n6ral du CERN, titulaire du droit d'auteur. Dans les cas appropnes, et s'll s'agit d'utiliser le document a des fins non commerciales, cette autonsation sera volontiers accorded. Le CERN ne revendique pas la propnete des

483

Physics 105 Handbook of Instructions  

E-Print Network (OSTI)

1 Physics 105 Handbook of Instructions Spring 2010 M.J. Madsen Wabash College, Crawfordsville the physical world and can be summa- rized by the following steps: 1. You will be presented a variety of "myths" or stories about some physical situation. 2. You will do background research into the physics models

Madsen, Martin John

484

PHYSICAL THERAPY PROGRAM STUDENT HANDBOOK  

E-Print Network (OSTI)

UTEP PHYSICAL THERAPY PROGRAM STUDENT HANDBOOK DPT Class of 2012 Summer 2010 Information herein;3 INTRODUCTION Dear Class of 2012, Welcome to the UTEP's Physical Therapy Program inaugural Doctor of Physical Therapy class. Your perseverance has paid off as you begin you academic career as a Student Physical

Ward, Karen

485

Memory of Initial Conditions in Gravitational Clustering  

E-Print Network (OSTI)

We study the nonlinear propagator, a key ingredient in renormalized perturbation theory (RPT) that allows a well-controlled extension of perturbation theory into the nonlinear regime. We show that it can be thought as measuring the memory of density and velocity fields to their initial conditions. This provides a clean definition of the validity of linear theory, which is shown to be much more restricted than usually recognized in the literature. We calculate the nonlinear propagator in RPT and compare to measurements in numerical simulations, showing remarkable agreement well into the nonlinear regime. We also show that N-body simulations require a rather large volume to recover the correct propagator, due to the missing large-scale modes. Our results for the nonlinear propagator provide an essential element to compute the nonlinear power spectrum in RPT.

M. Crocce; R. Scoccimarro

2005-09-15T23:59:59.000Z

486

Measuring Information Transfer  

Science Journals Connector (OSTI)

An information theoretic measure is derived that quantifies the statistical coherence between systems evolving in time. The standard time delayed mutual information fails to distinguish information that is actually exchanged from shared information due to common history and input signals. In our new approach, these influences are excluded by appropriate conditioning of transition probabilities. The resulting transfer entropy is able to distinguish effectively driving and responding elements and to detect asymmetry in the interaction of subsystems.

Thomas Schreiber

2000-07-10T23:59:59.000Z

487

Generalized energy conditions in Extended Theories of Gravity  

E-Print Network (OSTI)

Theories of physics can be considered viable if the initial value problem and the energy conditions are formulated self-consistently. The former allow a uniquely determined dynamical evolution of the system, and the latter guarantee that causality is preserved and that "plausible" physical sources have been considered. In this work, we consider the further degrees of freedom related to curvature invariants and scalar fields in Extended Theories of Gravity (ETG). These new degrees of freedom can be recast as effective perfect fluids that carry different meanings with respect to the standard matter fluids generally adopted as sources of the field equations. It is thus somewhat misleading to apply the standard general relativistic energy conditions to this effective energy-momentum, as the latter contains the matter content and a geometrical quantity, which arises from the ETG considered. Here, we explore this subtlety, extending on previous work, in particular, to cases with the contracted Bianchi identities wi...

Capozziello, Salvatore; Mimoso, Jos P

2014-01-01T23:59:59.000Z

488

Nucleon measurements at the precision frontier  

SciTech Connect

We comment on nucleon measurements at the precision frontier. As examples of what can be learned, we concentrate on three topics, which are parity violating scattering experiments, the proton radius puzzle, and the symbiosis between nuclear and atomic physics.

Carlson, Carl E. [Physics Department, College of William and Mary, Williamsburg, VA 23187 (United States)

2013-11-07T23:59:59.000Z

489

MEASUREMENTS OF BLACK CARBON PARTICLES' CHEMICAL, PHYSICAL, AND OPTICAL PROPERTIES  

E-Print Network (OSTI)

., Billerica, MA; 2 Boston College, Chestnut Hill, MA; 3 NOAA CIRES, Boulder, CO; 4 UC Davis, Davis, CA; 5 of Brookhaven Science Associates, LLC under Contract No. DE-AC02- 98CH10886 with the U.S. Department of Energy

490

Introduction Measuring chemical and physical properties of natural water  

E-Print Network (OSTI)

metabolic gases such as methane as well as permanent gases. Data are delivered to a shore station via for which spatiotemporal variability is a key attribute (e.g., Coale et al. 1991). To be most useful

Entekhabi, Dara

491

The determination of lithology from core physical properties measurements  

E-Print Network (OSTI)

that these experiments are noninvasive also allows for further post-cruise studies. For the study I chose Leg 162 (July-September 1995 in the North Atlantic) for the density of data, the experiments performed, the quantity and quality of post-cruise publications...

Clark, Paula Ann

2006-08-16T23:59:59.000Z

492

Search for New Physics in Rare Top Decays  

E-Print Network (OSTI)

Top physics provides a fertile ground for new-physics searches. At present, most top observables appear to be in good agreement with the respective Standard Model predictions. However, in the case of decay modes that are suppressed in the Standard Model, new-physics contributions of comparable magnitude may exist and yet go unnoticed because their impact on the total decay width is small. Hence it is interesting to probe rare top decays. This analysis focuses on the decay $t \\to b \\bar b c$. Useful observables are identified and prospects for measuring new-physics parameters are examined.

Pratishruti Saha

2014-11-27T23:59:59.000Z

493

Effect of Aerobic and Anaerobic Conditions on Chlorophenol Sorption in Wetland Soils  

E-Print Network (OSTI)

Effect of Aerobic and Anaerobic Conditions on Chlorophenol Sorption in Wetland Soils Elisa D by the physical and chemicalSorption of four chlorophenols (CPs) was studied in ten wetland properties- Much research on organic pollutant sorption has dem-bated under aerobic or anaerobic conditions

Florida, University of

494

CFD?Phenomenological Diesel Spray Analysis under Evaporative Conditions  

Science Journals Connector (OSTI)

CFD?Phenomenological Diesel Spray Analysis under Evaporative Conditions ... Despite their great uncertainties compared to the experimental studies, numerical simulations permit carrying out extensive parametric studies, isolating every single variable involved in the general process at any point in time and at any position in physical space. ... The thermodynamic codes assume that the cylinder charge is uniform in both composition and temperature, at all times during the cycle. ...

J. M. Desantes; X. Margot; J. M. Pastor; M. Chavez; A. Pinzello

2009-07-13T23:59:59.000Z

495

Physical Cost of Erasing Quantum Correlation  

E-Print Network (OSTI)

Erasure of information stored in a quantum state requires energy cost and is inherently an irreversible operation. If quantumness of a system is physical, does erasure of quantum correlation as measured by discord also need some energy cost? Here, we show that change in quantum correlation is never larger than the total entropy change of the system and the environment. The entropy cost of erasing correlation has to be at least equal to the amount of quantum correlation erased. Hence, quantum correlation can be regarded as genuinely physical. We show that the new bound leads to the Landauer erasure. The physical cost of erasing quantum correlation is well respected in the case of bleaching of quantum information, thermalization, and can have potential application for any channel leading to erasure of quantum correlation.

Arun Kumar Pati

2012-08-23T23:59:59.000Z

496

Beam physics in future electron hadron colliders  

E-Print Network (OSTI)

High-energy electron-hadron collisions could support a rich research programme in particle and nuclear physics. Several future projects are being proposed around the world, in particular eRHIC at BNL, MEIC at TJNAF in the US, and LHeC at CERN in Europe. This paper will highlight some of the accelerator physics issues, and describe related technical developments and challenges for these machines. In particular, optics design and beam dynamics studies are discussed, including longitudinal phase space manipulation, coherent synchrotron radiation, beam-beam kink instability, ion effects, as well as mitigation measures for beam break up and for space-charge induced emittance growth, all of which could limit the machine performance. Finally, first steps are presented towards an LHeC R&D facility, which should investigate relevant beam-physics processes.

Valloni, A; Klein, M; Schulte, D; Zimmermann, F

2013-01-01T23:59:59.000Z

497

Status of Spin Physics  

E-Print Network (OSTI)

Fundamental spin physics has made striking progresses in the last years; new ideas, experiments and data interpretations have been proposed and keep emerging. A review of some of the most important issues in the spin structure of nucleons is made and prospects for the future are discussed.

Mauro Anselmino

2001-07-09T23:59:59.000Z

498

Space Plasma Physics  

Science Journals Connector (OSTI)

...W.D., BEAM-PLASMA DISCHARGE - BUILDUP...DURING ELECTRON BEAM-PLASMA INTERACTIONS, GEOPHYSICAL...ELECTRON-BEAM IN THE ATMOSPHERE, PLANETARY AND SPACE...1980 ). Space plasma physics: electron...regula' occurred at large pitch angles. Note...in quite different areas. (i) There is...

KLAUS WILHELM; WOLFGANG STDEMANN; WILLIBALD RIEDLER

1984-07-13T23:59:59.000Z

499

Physics Teachers Workshop  

ScienceCinema (OSTI)

INL is looking for the nation's top high school physics teachers to attend our July workshop in Idaho Falls. Participants get to learn from nuclear researchers, tour facilities including a research reactor and interact with peers from across the country. You can learn more about INL projects at http://www.facebook.com/idahonationallaboratory

Huggins, DaNel; Calhoun, John; Palmer, Alyson; Thorpe, Steve; Vanderveen, Anne;

2013-05-28T23:59:59.000Z

500

New Physics at CDF  

E-Print Network (OSTI)

We present the current status of searches for physics beyond the Standard Model at the Tevatron 1.96-TeV proton-antiproton collider using data collected with the CDF experiment. We cover searches for supersymmetry, extra dimensions and new gauge bosons.

Melisa Rossi

2010-06-06T23:59:59.000Z