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Note: This page contains sample records for the topic "negligible negligible negligible" 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

Seismic evidence of negligible water carried below 400-km depth in subducting lithosphere  

Science Journals Connector (OSTI)

... .1038/nature09401 Seismic evidence of negligible water carried below 400-km depth in subducting lithosphereHarry W.Green IIH W

Harry W. Green II; Wang-Ping Chen; Michael R. Brudzinski

2010-10-03T23:59:59.000Z

2

Negligence Liability of K–12 Chemistry Teachers: The Need for Legal Balance and Responsible Action  

Science Journals Connector (OSTI)

Advice from administrators, teacher unions, and the insurance industry that seek to minimize liability costs for obvious reasons, often providing incomplete or misinterpreted information ... Even more clearly, other significant influences on science teaching, such as budgetary constraints, methodological innovations, and political concerns, are beyond the purview of this article. ... Remember, too, that even if the plaintiff, or suing party, makes this case of negligence, the defendant district or teacher has the defenses of: (i) contributory negligence; (ii) assumption of risk; and, depending on state law, (iii) immunity for either or both the district and the teacher. ...

Perry A. Zirkel; Marianne B. Barnes

2011-05-20T23:59:59.000Z

3

Single-Molecule Three-Color FRET with Both Negligible Spectral Overlap and Long Observation Time  

E-Print Network (OSTI)

Single-Molecule Three-Color FRET with Both Negligible Spectral Overlap and Long Observation Time-color detection capability in doing single- molecule fluorescence resonance energy transfer (FRET) experiments. Existing single-molecule three-color FRET techniques, however, suffer from severe photobleaching of Alexa

Hohng, Sung Chul

4

Release of Pu Isotopes from the Fukushima Daiichi Nuclear Power Plant Accident to the Marine Environment Was Negligible  

Science Journals Connector (OSTI)

Release of Pu Isotopes from the Fukushima Daiichi Nuclear Power Plant Accident to the Marine Environment Was Negligible ... On 11 March 2011, a massive earthquake with a magnitude of M 9.0 occurred in the western North Pacific about 180 km off the Fukushima Daiichi Nuclear Power Plant (FDNPP) in the northeast coast of Japan and it was followed by gigantic tsunami. ... Since the accident at Fukushima Daiichi Nuclear Power Plant (1FNPP), significant levels of anthropogenic radionuclides have been detected in seabed sediments off the east coast of Japan. ...

Wenting Bu; Miho Fukuda; Jian Zheng; Tatsuo Aono; Takashi Ishimaru; Jota Kanda; Guosheng Yang; Keiko Tagami; Shigeo Uchida; Qiuju Guo; Masatoshi Yamada

2014-07-22T23:59:59.000Z

5

Negligent Misrepresentation as Contract  

E-Print Network (OSTI)

393. Arthur L. Harding, Williston’s Fundamental Conceptions1920), Vol 1 at 3-5. Williston’s view that contract strictlytouchstone for this. Williston, Contracts (1 st ed. 1920),

Gergen, Mark P

2011-01-01T23:59:59.000Z

6

Interactions of CO and surface K: Negligible CO adsorption on K/Ag(111)  

SciTech Connect

Unlike transition metals which are active for chemisorption of CO, Ag(111) shows no tendency to adsorb CO at 100 K even when various amounts of K are added. This observation supports the proposal of Solymosi and Berko (Ref. 1) that bonding of CO with the host metal plays an important role in the interactions of K and CO on transition metals.

Roop, B.; Blass, P.M.; Zhou, X.; White, J.M.

1989-01-01T23:59:59.000Z

7

Tunable negligible-loss energy transfer between dipolar-coupled magnetic disks by stimulated vortex gyration  

E-Print Network (OSTI)

structure of magnetic vortex cores. Science 298, 577– Park,Magnetic vortex core observation in circular dots of Permalloy. Science

Jung, Hyunsung

2014-01-01T23:59:59.000Z

8

Liability for negligently increased risk: the repercussions of Barker v. Corus UK (plc)  

Science Journals Connector (OSTI)

......it is not incidental that Fairchild and McGhee v. National Coal Board,6 on which it relied, were not complicated by such...court empty-handed. They are unlikely to be swayed by any economic efficiency argument for the p > 1/2 rule.73 And if they......

Chris Miller

2009-03-01T23:59:59.000Z

9

Relationship between Quality of Care and Negligence Litigation in Nursing Homes  

Science Journals Connector (OSTI)

...of nursing home care target the facility, not the individual clinicians who work in the facility. Quality measures for nearly all nursing homes in the United States are collected routinely, are detailed, and are widely used in research. In addition, the predominance of large nursing home chains provides... In this analysis of a large national sample of nursing homes, those rated as having more deficiencies in quality of care were more likely to have malpractice claims brought against them; however, the difference was modest.

Studdert D.M.Spittal M.J.Mello M.M.O'Malley A.J.Stevenson D.G.

2011-03-31T23:59:59.000Z

10

Container Approval for the Disposal of Radioactive Waste with Negligible Heat Generation in the German Konrad Repository - 12148  

SciTech Connect

Since the license for the Konrad repository was finally confirmed by legal decision in 2007, the Federal Institute for Radiation Protection (BfS) has been performing further planning and preparation work to prepare the repository for operation. Waste conditioning and packaging has been continued by different waste producers as the nuclear industry and federal research institutes on the basis of the official disposal requirements. The necessary prerequisites for this are approved containers as well as certified waste conditioning and packaging procedures. The Federal Institute for Materials Research and Testing (BAM) is responsible for container design testing and evaluation of quality assurance measures on behalf of BfS under consideration of the Konrad disposal requirements. Besides assessing the container handling stability (stacking tests, handling loads), design testing procedures are performed that include fire tests (800 deg. C, 1 hour) and drop tests from different heights and drop orientations. This paper presents the current state of BAM design testing experiences about relevant container types (box shaped, cylindrical) made of steel sheets, ductile cast iron or concrete. It explains usual testing and evaluation methods which range from experimental testing to analytical and numerical calculations. Another focus has been laid on already existing containers and packages. The question arises as to how they can be evaluated properly especially with respect to lack of completeness of safety assessment and fabrication documentation. At present BAM works on numerous applications for container design testing for the Konrad repository. Some licensing procedures were successfully finished in the past and BfS certified several container types like steel sheet, concrete until cast iron containers which are now available for waste packaging for final disposal. However, large quantities of radioactive wastes had been placed into interim storage using containers which are not already licensed for the Konrad repository. Safety assessment of these so-called 'old' containers is a big challenge for all parties because documentation sheets about container design testing and fabrication often contain gaps or have not yet been completed. Appropriate solution strategies are currently under development and discussion. Furthermore, BAM has successfully initiated and established an information forum, called 'ERFA QM Konrad Containers', which facilitates discussions on various issues of common interest with respect to Konrad container licensing procedures as well as the interpretation of disposal requirements under consideration of operational needs. Thus, it provides additional, valuable supports for container licensing procedures. (authors)

Voelzke, Holger; Nieslony, Gregor; Ellouz, Manel; Noack, Volker; Hagenow, Peter; Kovacs, Oliver; Hoerning, Tony [BAM Federal Institute for Materials Research and Testing, 12200 Berlin (Germany)

2012-07-01T23:59:59.000Z

11

Experiments and simulations show how long-range contacts can form in expanded unfolded proteins with negligible secondary structure  

Science Journals Connector (OSTI)

...31 Mohana-Borges R Goto NK Kroon GJA Dyson...34 Tran HT Mao A Pappu RV ( 2008 ) Role of backbone-solvent...195 . 46 Vitalis A Pappu RV ( 2009 ) ABSINTH...Kaminski G Friesner R Tirado-Rives J Jorgensen...Engh RA & Huber R (1991) Accurate...400. 14. Tran HT & Pappu RV (2006) Toward...

Wenli Meng; Nicholas Lyle; Bowu Luan; Daniel P. Raleigh; Rohit V. Pappu

2013-01-01T23:59:59.000Z

12

Surface contact and design of fibrillar ‘friction pads’ in stick insects (Carausius morosus): mechanisms for large friction coefficients and negligible adhesion  

Science Journals Connector (OSTI)

...the non-normality of the data. The influence of load on the different measures...at 1 mN, and 2 at 4 mN load (data taken from reference [8...increase of contact area with load can be empirically described by power laws. The observed power-law...

2014-01-01T23:59:59.000Z

13

Liability Waiver: I understand that participating in summer camp activities is potentially hazardous, and that I should not register my child un-less he/she is medically able. I assume all risks (known and unknown), even if arising from the negligence of  

E-Print Network (OSTI)

__________________________________ Home Phone________________________________________________ Cell Phone__________________________________ Home Phone________________________________________________ Cell Phone________________________________________________ Cell Phone______________________________________ E

14

Design Enablement and Design-Centric Assessment of Future Semiconductor Technologies  

E-Print Network (OSTI)

line STDP compatible designs showing negligible area overhead. . . . . . . . . . . . . . . . . . . . . . .line STDP compatible designs showing negligible area overhead.design implementation of STDP at the poly-line layer is achieved with 1.8× pitch relaxation with virtually no area overhead;

Abou Ghaida, Rani

2012-01-01T23:59:59.000Z

15

Microscale wear behavior and crosslinking of PEG-like coatings for total hip replacements  

E-Print Network (OSTI)

the bottom surface did not roughen substantially until thecoatings also did not roughen, and they thinned negligibly.

Kane, Sheryl R.; Ashby, Paul D.; Pruitt, Lisa A.

2010-01-01T23:59:59.000Z

16

Vcrnrmuugsfllnktione,r. ~IIICI ilrrc Vcrwc~~dw~~ bci der Rerechnllng VOll Isotopenunlwandlllngen  

E-Print Network (OSTI)

this effect is negligible. Atomkernenergie 3KerntechnikVol. 42 (1983)No. 1 Here n is the number of nuclides

Shlyakhter, Ilya

17

E-Print Network 3.0 - angular response functions Sample Search...  

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

assumes legal liability responsibility accuracy, completeness, usefulness... minority ion-cyclotron heating, even though process introduces negligible angular momentum. ... Source:...

18

E-Print Network 3.0 - angular momentum evolution Sample Search...  

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

collisions while strictly conserving angular momentum, has adapted... minority ion-cyclotron heating, even though process introduces negligible angular momentum....

19

STANDARD OF CARE FOR BLASTING Timothy D. Stark1  

E-Print Network (OSTI)

STANDARD OF CARE FOR BLASTING NEGLIGENCE By Timothy D. Stark1 ABSTRACT: Blasters are usually but should be liable only if their conduct is proven to be negligent. This change in legal standard be related to the level of care exercised by the blaster. It is anticipated that a negligence standard

20

Three Essays on Retail Price Dynamics  

E-Print Network (OSTI)

negligible and holds for both retail- and wholesale-levelchange in the frequency of retail (wholesale) price changeCentro de Estudios del Retail (2009), "Calidad de Servicio

Elberg, Andres

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" 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

Download - American Society of Limnology and Oceanography  

Science Journals Connector (OSTI)

Jul 6, 1994 ... ments for an effective additive were that it not have a significant ... removal because of its negligible effect on X0, peak area. Ferric chloride ...

1999-12-19T23:59:59.000Z

22

E-Print Network 3.0 - amorphous carbon particles Sample Search...  

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

; Renewable Energy 3 High-Purity Catalytic CVD Generation of Single-Walled Carbon Nanotubes from Alcohol Summary: SWNTs with negligible amount of amorphous carbon, multi-walled...

23

E-Print Network 3.0 - artery resistance index Sample Search Results  

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

the case of a normal coronary artery (fig 1a), the epicardial artery only has negligible resistance to flow... grafts. It has been suggested that ... Source: Technische...

24

Economic analysis of solar assisted absorption chiller for a commercial building.  

E-Print Network (OSTI)

?? Dwindling fossil fuels coupled with changes in global climate intensified the drive to make use of renewable energy resources that have negligible impact on… (more)

Antonyraj, Gnananesan

2013-01-01T23:59:59.000Z

25

E-Print Network 3.0 - angular momentum transformation Sample...  

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

negligible angular momentum. mechanism... elements: First, angular momentum transport governed by a diffusion equation a no-slip boundary condition... microinstabilities....

26

E-Print Network 3.0 - angular momentum effects Sample Search...  

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

negligible angular momentum. mechanism... elements: First, angular momentum transport governed by a diffusion equation a no-slip boundary condition... microinstabilities....

27

E-Print Network 3.0 - angular momentum limit Sample Search Results  

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

negligible angular momentum. mechanism... elements: First, angular momentum transport governed by a diffusion equation a no-slip boundary condition... microinstabilities....

28

Energy Efficiency Improvement and Cost Saving Opportunities for the Vehicle Assembly Industry: An ENERGY STAR Guide for Energy and Plant Managers  

E-Print Network (OSTI)

Energy management systems Combined heat and power (CHP) CHPperiod was negligible. Combined heat and power (CHP) 5 . Forrequirements, the use of combined heat and power systems can

Galitsky, Christina

2008-01-01T23:59:59.000Z

29

E-Print Network 3.0 - arginase-induced l-arginine depletion Sample...  

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

of - Department of Psychology Collection: Biology and Medicine 44 Biodegradable chitosan particles induce chemokine release and negligible arginase-1 activity compared to...

30

E-Print Network 3.0 - angular momentum generation Sample Search...  

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

transport angular momentum density interesting both a fundamental physics... minority ion-cyclotron heating, even though process introduces negligible angular momentum....

31

E-Print Network 3.0 - angular intensity distribution Sample Search...  

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

height (z z ) 2 o z --1 2 is so only particles intense wave region... minority ion-cyclotron heating, even though process introduces negligible angular momentum....

32

E-Print Network 3.0 - angular gammagamma-correlation method Sample...  

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

FORTHE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DEAC0276CH03073 Summary: minority ion-cyclotron heating, even though process introduces negligible angular momentum....

33

E-Print Network 3.0 - angular momentum problem Sample Search...  

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

our problem calculation angular momentum driven bulk plasma ensemble... minority ion-cyclotron heating, even though process introduces negligible angular momentum....

34

E-Print Network 3.0 - angular distribution cross Sample Search...  

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

FORTHE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DEAC0276CH03073 Summary: minority ion-cyclotron heating, even though process introduces negligible angular momentum....

35

E-Print Network 3.0 - aabo cyclotron Sample Search Results  

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

Absorption of Fast Alfven Waves Perkins , White 1, , Bonoli 3... minority ion-cyclotron heating, even though process introduces negligible angular momentum. mechanism...

36

E-Print Network 3.0 - angular power spectrum Sample Search Results  

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

energy E so fast-wave heating power P * interpretation being angular... minority ion-cyclotron heating, even though process introduces negligible ... Source: Princeton Plasma...

37

E-Print Network 3.0 - angular distributions produced Sample Search...  

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

FORTHE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DEAC0276CH03073 Summary: minority ion-cyclotron heating, even though process introduces negligible angular momentum....

38

E-Print Network 3.0 - angular dependence electron Sample Search...  

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

FORTHE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DEAC0276CH03073 Summary: minority ion-cyclotron heating, even though process introduces negligible angular momentum....

39

E-Print Network 3.0 - angular momentum structure Sample Search...  

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

FORTHE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DEAC0276CH03073 Summary: minority ion-cyclotron heating, even though process introduces negligible angular momentum....

40

E-Print Network 3.0 - angular momentum loss Sample Search Results  

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

FORTHE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DEAC0276CH03073 Summary: minority ion-cyclotron heating, even though process introduces negligible angular momentum....

Note: This page contains sample records for the topic "negligible negligible negligible" 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

E-Print Network 3.0 - angular cutoff part Sample Search Results  

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

FORTHE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DEAC0276CH03073 Summary: minority ion-cyclotron heating, even though process introduces negligible angular momentum....

42

Domestic Health Studies and Activities | Department of Energy  

Energy Savers (EERE)

energy-policy decision-makers about actual human experience of negligible risk to human health from well-regulated occupational and environmental exposures to plutonium and other...

43

18. Consider the special case of the RLC circuit in which the ...  

E-Print Network (OSTI)

18. Consider the special case of the RLC circuit in which the resistance is negligible and the driving EMF is zero. The differential equation governing the charge.

44

Controlled Rapid Pressurization Using Liquid Propellants for EGS Well Stimulation  

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

Project objective: Investigate the use of non-toxic? or negligible environmental impact liquid propellants for the stimulation of geothermal fields.

45

A STATISTICAL FRACTURE MECHANICS APPROACH TO THE STRENGTH OF BRITTLE ROCK  

E-Print Network (OSTI)

to evaluate subcritical crack growth, many of the rubberoccurred indicating negligible subcritical crack growth.Subcritical crack growth can occur in many rocks and rock-

Ratigan, J.L.

2010-01-01T23:59:59.000Z

46

China Energy Databook - Rev. 4  

E-Print Network (OSTI)

Wind generators have also been used to provide power toand wind generators is negligible in the national con- text, but provide otherwise unavailable power to

Sinton Editor, J.E.

2010-01-01T23:59:59.000Z

47

Finite Element Analysis of Spherical Indentation Tests John Homans1, Sinisa Dj. Mesarovic2, Harish Radhakrishnan2  

E-Print Network (OSTI)

resistance of elastic-plastic materials was negligible indicating that the plastic dissipation did in linear elastic and elastic-plastic materials using a spherical indenter. ii) Resistance to lateral motion was studied. · In both linear elastic and elastic-plastic materials, the resistance was negligible. A 3

Collins, Gary S.

48

PREPARED FORTHE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DEAC0276CH03073  

E-Print Network (OSTI)

minority ion­cyclotron heating, even though process introduces negligible angular momentum. mechanism ion­cyclotron fast­wave heating raise question since minority ion­cyclotron heating negligible angular Rotation Tokamak Ion­cyclotron Absorption Fast Alfvén Waves F.W. Perkins, R.B. White, P.T. Bonoli, and V

49

R&D Toward a Neutrino Factory and Muon Collider  

E-Print Network (OSTI)

electrons of the same energy, muons experience negligibleBeam-beam tune shift Muons per bunch Beam stored energy (kJ)results in a muon beam having a large energy spread and very

Zisman, Michael S

2011-01-01T23:59:59.000Z

50

NUCLEAR ENERGY Annals of Nuclear Energy 32 (2005) 13051322  

E-Print Network (OSTI)

`re *, Imre Pa´zsit Department of Reactor Physics, Chalmers University of Technology, SE-412 96 Go of ``clean'' stationary oscilla- tions with negligible background noise, the DR can be defined as the ratio

Demazière, Christophe

51

Polymer International Polym Int 55:14201425 (2006) Atom transfer radical polymerization  

E-Print Network (OSTI)

- resistant thermosets.14 Ionic liquids are a new generation of green solvents. They have been employed The advantages of ionic liquids as reaction media compared to conventional organic solvents include negligible

Wan, Xin-hua

52

Search for gravitational waves from binary black hole inspiral, merger, and ringdown  

E-Print Network (OSTI)

We present the first modeled search for gravitational waves using the complete binary black-hole gravitational waveform from inspiral through the merger and ringdown for binaries with negligible component spin. We searched ...

Barnum, Sam

53

Antifungal Effects on Metabolite Profiles of Medically Important Yeast Species Measured by Nuclear Magnetic Resonance Spectroscopy  

Science Journals Connector (OSTI)

...rapid (5 min per sample) and can be automated. Setup (equipment) costs are relatively high, but running costs are very low due to minimal operator time and reagent costs and the negligible sample processing involved compared with standard...

Muireann Coen; Jennifer Bodkin; Damla Power; William A. Bubb; Uwe Himmelreich; Philip W. Kuchel; Tania C. Sorrell

2006-09-18T23:59:59.000Z

54

Radiosensitization Strategies for Enhanced E-beam Irradiation Treatment of Fresh Produce  

E-Print Network (OSTI)

necessary to develop treatments that will reduce their prevalence and numbers on fresh produce. Irradiation is a penetrating nonthermal treatment that effectively eliminates bacteria. Irradiated baby spinach leaves up to 1.0 kGy showed negligible (P>0...

Gomes, Carmen

2011-08-08T23:59:59.000Z

55

Effect of quenching on the kaon B parameter  

Science Journals Connector (OSTI)

We compute the kaon B parameter on an ensemble of lattices which include the effects of dynamical quark loops. Comparing with our previous quenched calculations, we find that dynamical fermions have negligible effect.

Gregory Kilcup

1993-09-13T23:59:59.000Z

56

Stable nitrogen isotope measurements of marine bacterial proteins and nucleic acids: tracers of microbial activity  

E-Print Network (OSTI)

Stable nitrogen isotopes ([]15N) can trace elemental cycling in aquatic ecosystems if the enzyme mediated fractionations associated with nutrient uptake and assimilation are negligible or consistently predictable. In this study, bacterial proteins...

Kovacs, Jeffrey Paul

2012-06-07T23:59:59.000Z

57

Unraveling the Kinship Network: Child Labor and Migration in Togo  

E-Print Network (OSTI)

the mother, the girl’s parents had lost their ?rst daughtera letter sent by the parents of a lost girl in Nigeria. Theparents negligent to send another daughter after they lost

Buchbinder, Liza S

2006-01-01T23:59:59.000Z

58

A Polarized Neutron Scattering Study of the Normal Phase in YBa2Cu3O6.95  

Science Journals Connector (OSTI)

Polarized neutron scattering with polarization analysis has revealed negligible magnetic scattering up to 30 meV in the normal...2Cu3O6.95 indicating the absence of local moments.

T. J. Smith; K. H. Andersen; U. Beck; H. Capellmann…

1999-02-01T23:59:59.000Z

59

Data transmission in long-range dielectric-loaded surface plasmon polariton waveguides  

E-Print Network (OSTI)

In this paper we report successful transmission of 10 Gbit/s on-off-keying (OOK) modulated signal through the LR-DLSPPWs with almost negligible degradation of the data flow consistency

Kharitonov, Svyatoslav; Ruiz, Ivan Fernandez de Jauregui; Kumar, Ashwani; Shi, Xueliang; Leosson, Kristjan; Pertsch, Thomas; Bozhevolnyi, Sergey; Nolte, Stefan; Chipouline, Arkadi

2014-01-01T23:59:59.000Z

60

Regridding reconstruction algorithm for real-time tomographic imaging  

Science Journals Connector (OSTI)

A fast algorithm for tomographic reconstruction based on the Fourier method is presented. On CPU, it provides an up to 20-fold performance increase compared with filtered back-projection routines with negligible accuracy degradation.

Marone, F.

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" 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

On being close to a black hole without falling in  

Science Journals Connector (OSTI)

... Normal indices refer to Schwarzschild coordinates, whereas barred indices refer to the corresponding orthonormal tetrad and label physical quantities ... assume that both the matter and the field have negligible gravitational effect, so that the Schwarzschild metric is valid. Then

ROMAN ZNAJEK

1976-07-22T23:59:59.000Z

62

Spatial and temporal controls on biogeochemical indicators at the small-scale interface between a contaminated aquifer and wetland surface water  

E-Print Network (OSTI)

from three locations exhibiting upward, downward, and negligent hydrologic flow between aquifer and wetland. PCA was used to identify the principal biogeochemical processes and to obtain factor scores for evaluating significant seasonal and hydrological...

Baez-Cazull, Susan Enid

2009-05-15T23:59:59.000Z

63

Cryogenic Electron Beam Induced Chemical Etching  

Science Journals Connector (OSTI)

Cryogenic cooling is used to enable efficient, gas-mediated electron beam induced etching (EBIE) in cases where the etch rate is negligible at room and elevated substrate temperatures. The process is demonstrated using nitrogen trifluoride (NF3) as the ...

Aiden A. Martin; Milos Toth

2014-10-21T23:59:59.000Z

64

Ultra-small-angle neutron scattering from dense micrometre-sized colloidal systems: data evaluation and comparison with static light scattering  

Science Journals Connector (OSTI)

Application of the GIFT method works well for evaluation of both neutron and light scattering data, but multiple scattering must be kept negligible. The advantage of light scattering is the fast data acquisition, while USANS covers a wider q range.

Innerlohinger, J.

2006-03-12T23:59:59.000Z

65

IOP PUBLISHING CLASSICAL AND QUANTUM GRAVITY Class. Quantum Grav. 26 (2009) 094031 (6pp) doi:10.1088/0264-9381/26/9/094031  

E-Print Network (OSTI)

Online at stacks.iop.org/CQG/26/094031 Abstract Intermediate-mass black holes (IMBHs), with masses negligible metallicity. This reduces radiative opacity and thus the strength of radiation driven winds, hence

Miller, Cole

66

Non-uniqueness problem in estimating original gas in place  

E-Print Network (OSTI)

and a negligence of the effect of a considerable encroaching aquifer that could be thought not to exist. This study shows several examples for synthetic gas reservoir/aquifer systems that are modeled mathematically, then programmed, to simulate...

El-Ahmady, Mohamed Hamed

2000-01-01T23:59:59.000Z

67

Impact of Stochastic Renewable Energy Generation on Market Quantities  

Science Journals Connector (OSTI)

Electricity generation from stochastic renewable energy sources, such as wind and solar power ... , has a non-negligible impact on electricity markets. The origins of that impact relate to the economical aspects ...

Juan M. Morales; Antonio J. Conejo…

2014-01-01T23:59:59.000Z

68

Overview Factsheet 05-01-13.indd  

Office of Environmental Management (EM)

health. Negligible to low risk to ecological resources, except for a moderate risk to sediment and soil-dwelling biota (e.g., worms) for truck accident with a fi re and rain....

69

Computational Reality I Linear elastostatics  

E-Print Network (OSTI)

. By assuming that the body forces (due to the gravitation or electromagnetic induction) are negligible against is given by the constitutive relation between the stress and strain, Hooke's law ij = Cijklkl , (5

Berlin,Technische Universität

70

Radiation Exposure to Patient and Staff in Hepatic Chemoembolization: Risk Estimation of Cancer and Deterministic Effects  

Science Journals Connector (OSTI)

In order to calculate the organ doses, we used only the dosemeter values measured ... negligible compared to the direct and significantly longer radiation exposure to the liver region. When one wishes to keep the...

Nico Hidajat; Peter Wust; Roland Felix…

71

Dynamics on the Laminar-Turbulent Boundary and the Origin of the Maximum Drag Reduction Asymptote  

E-Print Network (OSTI)

Dynamical trajectories on the boundary in state space between laminar and turbulent plane channel flow—edge states—are computed for Newtonian and viscoelastic fluids. Viscoelasticity has a negligible effect on the properties ...

Graham, Michael D.

72

Study of snow dynamics at subgrid scale in semiarid environments combining terrestrial photography and data assimilation techniques  

Science Journals Connector (OSTI)

Snow cover simulation is a complex task in mountain regions due to its highly irregular distribution. GIS-based calculations of snowmelt/accumulation models must deal with non-negligible scale effects below cell size, which may result in ...

Rafael Pimentel; Javier Herrero; Yijian Zeng; Zhongbo Su; María J. Polo

73

Radioactive waste backup threatens research  

Science Journals Connector (OSTI)

...which pose negli-gible health hazards, and high-level...DHHS, for Department of Health and Human Z Services...main-tained truck carrying depleted uranium; three damaged boxes...National Institutes of Health (NIH), have escaped...

E Marshall

1979-10-26T23:59:59.000Z

74

SFU BOOTCAMP FRANCOFUN 2014 RELEASE OF LIABILITY, WAIVER OF CLAIMS,  

E-Print Network (OSTI)

reasonable steps to safeguard or protect me from injury or from the risks, dangers and hazards THAT NEGLIGENCE INCLUDES FAILURE ON THE PART OF THE RELEASEES TO TAKE REASONABLE STEPS TO SAFEGUARD OR PROTECT ME

75

K-12 Public Education in the Kansas Courts: 1980-2009  

E-Print Network (OSTI)

the types of education litigation in Kansas have changed over the years. Challenges to the state funding formula, cases involving employee termination or nonrenewal, special education litigation, and negligence claims brought against school employees have...

Fitzgerald, Leeann

2011-03-31T23:59:59.000Z

76

Design and Analysis on Face-Cooled Disk Faraday Rotator under High Average Power Lasers  

Science Journals Connector (OSTI)

A novel, scalable Faraday rotator has been designed for high-average-power lasers in a gas-cooled multi-disk scheme. The concept with a negligible thermal distortion and birefringence...

Yasuhara, Ryo; Yamanaka, Masanobu; Norimatsu, Takayoshi; Izawa, Yasukazu; Kawashima, Toshiyuki; Ikegawa, Tadashi; Matsumoto, Osamu; Sekine, Takashi; Kurita, Takashi; Kan, Hirofumi; Furukawa, Hiroyuki

77

Design and Analysis on Face-Cooled Disk Faraday Rotator for High Average Power Lasers  

Science Journals Connector (OSTI)

A novel, scalable Faraday rotator has been designed for high-average-power lasers in a gas-cooled multi-disk scheme. The concept with a negligible thermal distortion and birefringence...

Yasuhara, R; Yamanaka, M; Norimatsu, T; Izawa, Y; Kawashima, T; Ikegawa, T; Matsumoto, O; Sekine, T; Kurita, T; Kan, H; Furukawa, H

78

A fast response and -insensitive neutron detector based on parallel-plate avalanche counter  

Science Journals Connector (OSTI)

......scattering in the detector gas is negligible. However...conditions in terms of gas pressure and applied voltages...compared with the other gas-filled neutron detectors...thin structure and low production cost of this detector, it is......

M. Nakhostin; M. Baba; T. Itoga; T. Oishi; Y. Unno; S. Kamada; T. Okuji

2008-05-01T23:59:59.000Z

79

NC-JRA-001_Electron Microscopy  

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

samples between labs and buildings SBMS Transportation, PPE, training N 1 3 2 2 12 *Risk: 0 to 20 21 to 40 41-60 61 to 80 81 or greater Negligible Acceptable Moderate...

80

NC-JRA-002_High_Temp_Work  

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

glasses, gloves. N 1 5 2 2 20 Further Description of Controls Added to Reduce Risk: *Risk: 0 to 20 Negligible 21 to 40 Acceptable 41 to 60 Moderate 61 to 80 Substantial 81 or...

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


81

NC-JRA-007_LASER  

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

Added to Reduce Risk: *Risk: 0 to 20 21 to 40 41-60 61 to 80 81 or greater Negligible Acceptable Moderate Substantial Intolerable NC Job Risk Assessment Bnlnt2cfn docs...

82

Sanitizable signatures in XML signature: performance, mixing properties, and revisiting the property of transparency  

Science Journals Connector (OSTI)

We present the performance measures of our Java Cryptography Architecture (JCA) implementation that integrates sanitizable signature schemes into the XML Signature Specification. Our implementation shows mostly negligible performance impacts when using ... Keywords: XML signature framework, performance, sanitizable signatures, transparency

Henrich C. Pöhls; Kai Samelin; Joachim Posegga

2011-06-01T23:59:59.000Z

83

Time for tea  

Science Journals Connector (OSTI)

... surface of the fine suspension of calcium carbonate that then settles on the surfaces of teapots and cups as a brown stain. Any chemical reaction is negligible. It is common ...

P. P. Jones

1993-10-07T23:59:59.000Z

84

Hadley Circulations for Zonally Averaged Heating Centered off the Equator  

Science Journals Connector (OSTI)

Consistent with observations, we find that moving peak heating even 2 degrees off the equator leads to profound asymmetries in the Hadley circulation, with the winter cell amplifying greatly and the summer cell becoming negligible. It is found ...

Richard S. Lindzen; Arthur V. Hou

1988-09-01T23:59:59.000Z

85

Effect of Irradiating the Tubercle Bacillus with Radon  

Science Journals Connector (OSTI)

... tubercle bacillus (1 mgm./c.c.) using the whole of the radiation of radon dissolved in the culture. The teclinique we have elaborated enables us to obtain reproducible ... -radiations aro negligible.) The following results are observed.

P. BONET-MAURY; H. R. OLIVIER

1939-11-11T23:59:59.000Z

86

Microsoft Word - Chapter 6_021411  

National Nuclear Security Administration (NNSA)

precise plans are finalized by the CD-1 process. 6.3.6 Air Quality ORR's contribution to air pollution in the ROI is negligible compared to other sources. The major sources of...

87

The Nonlinear Equatorial Kelvin Wave  

Science Journals Connector (OSTI)

Using the method of strained coordinates, a uniformly valid approximation to the nonlinear equatorial Kelvin wave is derived. It is shown that nonlinear effects are negligible for the Kelvin waves associated with the Gulf of Guinea upwelling. The ...

John P. Boyd

1980-01-01T23:59:59.000Z

88

Risk aversion in maintenance: a utility-based approach  

Science Journals Connector (OSTI)

......2005), who derives an inspection policy for a standby electric generator, when repair time is not negligible. The earliest...extended service contracts: theory and an applica- tion to automobiles. Market. Sci., 12, 230247. PFANZAGL, J. (1959) A......

Rose Baker

2010-10-01T23:59:59.000Z

89

Comparison of index-3, index-2 and index-1 DAE solvers for nonsmooth multibody systems with unilateral and bilateral constraints  

E-Print Network (OSTI)

constraints. A valve system with a zoom on the cylindrical cam and a standard cam­follower system period can be negligible and we use the Newton impact law with a coefficient of restitution e. If g

Boyer, Edmond

90

An Empirical Study of the Interface between Healthcare Facility Design and Human Resource Management  

E-Print Network (OSTI)

within a facility showed that work spaces and staff rest areas had a considerable influence on job attitudes of employees, while the impact of patient areas was negligible. Multigroup analysis indicated that the influence of the physical work environment...

Sadatsafavi, Hessamaldin

2014-05-21T23:59:59.000Z

91

On the influence of dissipative effects on instabilities of differentially-rotating plasmas  

SciTech Connect

The stability of differentially-rotating cylindrical plasmas in the axial homogeneous magnetic field is studied in the framework of one-fluid dissipative magnetohydrodynamics. The dispersion relation of small-scale axisymmetric perturbations, taking into account the effects of the plasma thermal stratification, its resistivity and its viscosity, is derived. In the limiting cases of negligible resistivity and of negligible viscosity, the criteria of plasma stability are obtained. It is shown that in the case of small viscosity, the azimuthal flow of resistive plasma in the axial magnetic field is unstable due to the buoyancy effect if both the plasma pressure and its entropy either increase or decrease in the radial direction.

Lakhin, V. P., E-mail: vplakhin@mtu-net.ru; Ilgisonis, V. I. [Russian Research Centre 'Kurchatov Institute' (Russian Federation)

2010-04-15T23:59:59.000Z

92

Laser ablation of contaminants from concrete and metal surfaces. Topical report, June--December 1994  

SciTech Connect

Tests have demonstrated that it is possible to clean coatings off surfaces using high-power, pulsed, high-repetition-rate lasers. Purpose of this contract is to demonstrate (1) that pulsed-repetition lasers can be used to remove paint from concrete and metal surfaces, including cleaning out the surface pores, (2) that the cleaning process will result in negligible release of contaminated ablated material to the environment, and (3) that the process generates negligible additional waste compared to competing technologies. This report covers technical progress during Phase 1 of the contract and makes recommendations for technology development in Phase 2.

Freiwald, J.; Freiwald, D.A.

1994-12-01T23:59:59.000Z

93

Final state interactions at the threshold of Higgs boson pair production  

E-Print Network (OSTI)

We study the effect of final state interactions at the threshold of Higgs boson pair production in the Glashow-Weinberg-Salam model. We consider three major processes of the pair production in the model: lepton pair annihilation, ZZ fusion, and WW fusion. We find that the corrections caused by the effect for these processes are markedly different. According to our results, the effect can cause non-negligible corrections to the cross sections for lepton pair annihilation and small corrections for ZZ fusion, and this effect is negligible for WW fusion.

Zhang, Zhentao

2015-01-01T23:59:59.000Z

94

Modifying locally the safety profile to improve the confinement of magnetic field lines in tokamak  

E-Print Network (OSTI)

Published in Nuclear Fusion 52 (2012) 054006. hal-00698991,version1-18May2012 Author manuscript, published in "Nuclear Fusion 52, 5 (2012) 054006" DOI : 10.1088/0029-5515/52/5/054006 #12;Modifying locally the safety center, with negligible input power. In this way, they were able to demonstrate that the electron

Paris-Sud XI, Université de

95

VOLUME 88, NUMBER 11 P H Y S I C A L R E V I E W L E T T E R S 18 MARCH 2002 High Tc Superconductivity in MgB2 by Nonadiabatic Pairing  

E-Print Network (OSTI)

,10]. Sec- ond, the experimental determination of the total isotope ef- fect on Tc reported a boron isotope interpretation of Tc 39 K and the boron isotope coefficient aB 0.30 without invoking very large couplings coefficient aB 0.30 and a negligible magnesium isotope effect [11]. Prelimi- nary indications suggest

Cappelluti, Emmanuele

96

Remanence enhancement in magnetically interacting particles Heliang Qu and Jiang Yu Li*  

E-Print Network (OSTI)

, which completely characterizes the remanence of magnets if the exchange coupling is negligible of remanence for most permanent magnets, the re- cent development of exchange-spring magnets make the asRemanence enhancement in magnetically interacting particles Heliang Qu and Jiang Yu Li* Department

Li, Jiangyu

97

Corrosion, Design and Materials: General and Pitting  

Science Journals Connector (OSTI)

...effect would be negligible. The rate of penetration is governed by pit geometry...larger than its diameter and the rate of penetration may be directly proportional...uniform attack occurs with a penetration rate of up to 0.08 mm per year...

1976-01-01T23:59:59.000Z

98

DOCUMENTARY REPRODUCTION  

Science Journals Connector (OSTI)

... co-operation with other libraries and institutions, locate references, compile bibliographies, or issue abstracting journals to facilitate selection of subject-matter of which copies may be required. Examples of ... a minimum number of copies to justify investment, since the investment is negligible.

LUCIA MOHOLY

1946-01-12T23:59:59.000Z

99

Copyright 2006 by the Genetics Society of America DOI: 10.1534/genetics.105.051110  

E-Print Network (OSTI)

) decayed very rapidly in the self-incompatible wild sunflower, with the expected LD falling to negligible to this so-called ``domestication bottleneck,'' the transition to self-fertilization that often accompa- nies with a transition to partial or full self-fertilization reduces the effective recombination rate, once again

Burke, John M.

100

Mechanics of cycling J.-P. Mariot  

E-Print Network (OSTI)

as well. The movement is studied when an average constant torque is applied on the rear wheel. For a 72 kg, that mechanical losses due to the ball bearings are now negligible considering the excellence of modern products. The invention of the bicycle is probably as impor- tant as that of the wheel (a little over 5 000 years ago

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "negligible negligible negligible" 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

Modeling of activity coefficients of aqueous solutions of quaternary ammonium salts with the  

E-Print Network (OSTI)

@nd.edu #12;2 Abstract Ionic liquids (ILs) have been studied recently as potential "green" solvents due to their negligible vapor pressure. Modeling their phase behavior with water and organic solvents to air pollution. Much work has focused on their ability to serve as solvents for reactions

Stadtherr, Mark A.

102

Frequency-dependent seismic attenuation in shales: experimental results and theoretical analysis  

Science Journals Connector (OSTI)

......decane-saturated Mancos shale observing negligible...dependence of the anisotropic elastic moduli...attenuation has an anisotropic expression and...perpendicular to the shale bedding plane...Batzle M. Anisotropic elastic moduli of the Mancos B Shale-- An experimental......

Claudio Delle Piane; Joel Sarout; Claudio Madonna; Erik H. Saenger; David N. Dewhurst; Mark Raven

2014-01-01T23:59:59.000Z

103

Low Order Decentralized Stabilizing Controller Design for a Mobile Inverted Pendulum Robot  

E-Print Network (OSTI)

model is based on a form of an inverted pendulum and the robot was constructed into a mechanical system a schematic using Newton's laws of motion (e.g., [3]). The system has six states describing its motion-axis characterized by the yaw angle and yaw velocity . Any motion about the x-axis is considered negligible

Gundes, A. N.

104

Quarterly Report for January -March 2001  

E-Print Network (OSTI)

the nonwetting phase (steam). A flexible heat guard ensured negligible overall heat loss for a near used in recent years to measure the distribution of steam and water saturation in rocks to obtain steam was saturated with water and scanned to obtain CTwet; from these scans, a porosity distribution was obtained

Stanford University

105

Mirrors of dynamic curvature for linear solar concentrators  

E-Print Network (OSTI)

as heat absorber. The variation of the focus leads to a wide variation of the distribution of light 1 hal results in a non-negligeable intercept loss plus an increase in the thermal loss by the receiver. The limited concentration ratio, hence the large size of the receiver and the high thermal losses from it

Paris-Sud XI, Université de

106

Quarterly Report for July -September 2000  

E-Print Network (OSTI)

) displaces the nonwetting phase (steam). A flexible heat guard ensures negligible overall heat loss the distribution of steam and water saturation in rocks to obtain steam-water relative permeability curves (Satik, a porosity distribution will be obtained, expected to yield an average value of 24.7%. In the next step, hot

Stanford University

107

Quarterly Report for October -December 2000  

E-Print Network (OSTI)

negligible overall heat loss for a near-adiabatic process. The flexible heat guard control mechanism the distribution of steam and water saturation in rocks to obtain steam-water relative permeability curves (Satik CTwet; from these scans, a porosity distribution will be obtained, expected to yield an average value

Stanford University

108

K. Toyota et al.: Photochemistry of VOCs and halogens in the MBL (Supplement) 1 A supplement to "A box model study on photochemical interactions  

E-Print Network (OSTI)

J/mol and of negligible importance at atmospheric temperatures (Kaiser and Wallington, 1996a): Cl + C2H4 HCl + C2H3. (2 occurring in the reaction chamber, Wallington et al. (1990) de- rived the rate constant for Reaction (4

Meskhidze, Nicholas

109

Trawling Operations and South African (Cape) Fur Seals, Arctocepha/us pusillus pusil/us  

E-Print Network (OSTI)

. Wickens is with the Marine Biology Re search Institute, University of Cape Town, Rondebosch 7700, South, but this is negligible (0.3%) in terms ofthe value ofthe fishery. Seal mortality is mainly caused by drown ing in trawl are deliberately killed annually, but this most likely takes place only when caught and they enter the area below

110

Hydrodynamics of fluid around a collapsing bubble in the spark bubble droplet generation process  

Science Journals Connector (OSTI)

......negligible compared with the atmospheric or reference pressure of the...the physical properties of water such as surface tension and...considered at room temperature and atmospheric pressure. Figure 2 shows the...deformation of steep waves on water: I. A numerical method of......

Abdolrahman Dadvand; Mazyar Dawoodian; Boo Cheong Khoo

2014-08-01T23:59:59.000Z

111

Measuring sparticle masses in nonuniversal string inspired models at the LHC.  

E-Print Network (OSTI)

/UFB problem. It should be noted [12] that the A-terms of squarks other than the stop are not calculable for small tan ?. We shall approximate them here to be equal to At, but in fact they have a negligible effect upon the phenomenol- ogy/spectrum unless tan ?...

Allanach, B C; Lester, Christopher G; Parker, Michael A; Webber, Bryan R

112

PROPRIETARY MATERIAL. 2011 The McGraw-Hill Companies, Inc. Limited distribution permitted only to teachers and educators for course preparation. If you are a student using this Manual, you are using it without permission.  

E-Print Network (OSTI)

Turbine Boiler Condense r Process heater PIPII 9 2 3 7 4 fwh #12; and process heat. The mass flow rate of steam through the boiler for a net power output of 25 MW are negligible. Analysis From the steam tables (Tables A-4, A-5, and A-6), kJ/kg02.86757.844.858 k

Bahrami, Majid

113

Chromosome Pairing Does Not Contribute to Nuclear Architecture in Vegetative Yeast Cells  

Science Journals Connector (OSTI)

...expressed as ratios to the nuclear diameter as described...simulation with 100 datasets each. This area defines...there are more than 50% datasets (i.e., ) where...positions at different nuclear latitudes. If nonhomologous...considered negligible. Nuclear distribution of NOR-linked...

Alexander Lorenz; Jörg Fuchs; Reinhard Bürger; Josef Loidl

2003-10-01T23:59:59.000Z

114

Antimicrobial packaging system for optimization of electron beam irradiation of fresh produce  

E-Print Network (OSTI)

This study evaluated the potential use of an antimicrobial packaging system in combination with electron beam irradiation to enhance quality of fresh produce. Irradiated romaine lettuce up to 3.2 kGy showed negligible (p > 0.05) changes in color...

Han, Jaejoon

2006-10-30T23:59:59.000Z

115

PROPRIETARY MATERIAL. 2011 The McGraw-Hill Companies, Inc. Limited distribution permitted only to teachers and educators for course preparation. If you are a student using this Manual, you are using it without permission.  

E-Print Network (OSTI)

cycle and simple Rankine cycle for the bottoming cycle. The mass flow rate of air for a specified power it without permission. 10-86 10-85 A combined gas-steam power cycle uses a simple gas turbine for the topping-standard assumptions are applicable fo Brayton cycle. 3 Kinetic and potential energy changes are negligible. 4 Air

Bahrami, Majid

116

Overregulated biotechnology  

Science Journals Connector (OSTI)

... and tech-nology policy. One need only contrast the negative impact of the administration's biotechnology policies with the lofty goals outlined in the document Science and the National Interest ( ... regulatory system". The reality is that at the same time as funding is down, biotechnology regulation has become increasingly intru-sive, unscientific and focused on negligible-risk activities. The ...

Henry I. Miller

1994-10-20T23:59:59.000Z

117

A Multi-Price Inventory Model with Random Discount Prices Mohammad Mahdi Tajbakhsh1, Chi-Guhn Lee1,3, Saeed Zolfaghari2  

E-Print Network (OSTI)

A Multi-Price Inventory Model with Random Discount Prices Mohammad Mahdi Tajbakhsh1, Chi-Guhn Lee1 deal offers with a random discount price at random points in time. Assuming that the demand is constant over time, lead times are negligible, discount offerings follow a Poisson process, and discount price

Lee, Chi-Guhn

118

GDC-0980 Is a Novel Class I PI3K/mTOR Kinase Inhibitor with Robust Activity in Cancer Models Driven by the PI3K Pathway  

Science Journals Connector (OSTI)

...platelet-derived MHC class I Next, we utilized...coating by platelets in greater detail. Resting platelets...levels of CD41a and MHC class I, whereas only negligible...could be restored in great part by blocking MHC class I (Fig. 4A). Of...

Jeffrey J. Wallin; Kyle A. Edgar; Jane Guan; Megan Berry; Wei Wei Prior; Leslie Lee; John D. Lesnick; Cristina Lewis; Jim Nonomiya; Jodie Pang; Laurent Salphati; Alan G. Olivero; Daniel P. Sutherlin; Carol O'Brien; Jill M. Spoerke; Sonal Patel; Letitia Lensun; Robert Kassees; Leanne Ross; Mark R. Lackner; Deepak Sampath; Marcia Belvin; and Lori S. Friedman

2011-12-01T23:59:59.000Z

119

Residential Energy Use Alternatives: 1976 to 2000  

Science Journals Connector (OSTI)

...de-veloped a set ofthermal standards for de-sign of new residential...reduced cost for smaller HVAC equipment. Thus the net impact of these standards on initial cost is negligible...estimated with the ASHRAE standards for single-family units...

Eric Hirst

1976-12-17T23:59:59.000Z

120

Switch: A Planning Tool for Power Systems with Large Shares of Intermittent Renewable Energy  

Science Journals Connector (OSTI)

In low-emission scenarios, forecast errors may be compensated by nonemitting sources such as hydro plants, curtailed wind or solar projects, batteries, flywheels, instant-start generators, or demand response, in which case they may have a negligible effect on emissions. ...

Matthias Fripp

2012-04-16T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" 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

Journal of Law Temperature Physics. Vol. 117. Nos. 112, 1999 Excitations Beyond the Roton of  

E-Print Network (OSTI)

4 He in Aerogel R. T. Azuah,1 H. R. Glyde,2 J. R. Beamish,3 and M. A. Adams4 1 Department of Physics% porous aerogel has been measured by inelastic neutron scattering methods. The aerogel was grown with deuterated materials and the multiple scattering involving the aerogel was negligible. S(Q, w) in the super

Glyde, Henry R.

122

Joule heating induced by vortex motion in a type-II superconductor Z. L. Xiao and E. Y. Andrei  

E-Print Network (OSTI)

Joule heating induced by vortex motion in a type-II superconductor Z. L. Xiao and E. Y. Andrei-II superconductor due to Joule heating induced by vortex motion. The effect of Joule heating is detected s duration, where the Joule heating is negligible and saturates, respectively. The thermometry is based

Andrei, Eva Y.

123

Atmos. Chem. Phys., 6, 35633570, 2006 www.atmos-chem-phys.net/6/3563/2006/  

E-Print Network (OSTI)

in the entire solar spectrum, lower values (6.4­8.6%) are obtained, but those are still not negligible; Decesari et al., 2005). These aerosols scatter and absorb the incident light, affecting the energy transfer. This work is licensed under a Creative Commons License. Atmospheric Chemistry and Physics Optical properties

Paris-Sud XI, Université de

124

The Surface Expression of Semidiurnal Internal Tides near a Strong Source at Hawaii. Part II: Interactions with Mesoscale Currents*  

E-Print Network (OSTI)

: the cyclone causes the energy of internal tide rays propagating through its core to increase near the surface with astronomical forcing because of the presence of mesoscale variability. Internal tide energy is mainly affected but not negligible role, inducing energy transfers between the internal tides and background currents. Furthermore

125

How to Avoid Overestimating Variable Speed Drive Savings  

E-Print Network (OSTI)

. Measure full flow power, rather than assuming it is the same as motor nameplate or design power. For many pump and fan systems, none of the eight factors will apply, or their effects will be negligible. However, analysts should consider their applicability...

Maxwell, J. B.

2005-01-01T23:59:59.000Z

126

Dale M. Meade Presented at  

E-Print Network (OSTI)

the Way to Fusion for the FIRE Team http://fire.pppl.gov Exploring the Frontiers of Burning Plasma Science #12;Outline · Objectives for a Next Step Experiment in Magnetic Fusion · Burning Plasma Performance. The input costs of fusion power would be minor, and it produces negligible nuclear waste or pollutants

127

Laboratories are Needed to Explore, Explain VLBACHANDRA  

E-Print Network (OSTI)

://fire.pppl.gov Exploring the Frontiers of Burning Plasma Science #12;Outline · Objectives for a Next Step Experiment in Magnetic Fusion · Burning Plasma Performance Considerations · Compact High Field Approach - General, and it produces negligible nuclear waste or pollutants." What should we do to be ready? #12;Activities to Assess

128

Exploring the Frontiers of Burning Science Dale Meade and the FIRE Team  

E-Print Network (OSTI)

Exploring the Frontiers of Burning Science Dale Meade and the FIRE Team ITC-12 / APFA '01 Meeting, and it produces negligible nuclear waste or pollutants." What should we do to be ready? By end of January conduct the base fusion sciences program 2. Directs DOE to submit a plan for construction of a U.S. Burning Plasma

129

Journal of Sound and Vibration (1998) 216(3), 495505 Article No. sv981725  

E-Print Network (OSTI)

] that non-negligible flow resistance versus frequency variations can arise in stratified fibrous materials THE DYNAMIC FLOW RESISTANCE AND THE ACOUSTIC MEASUREMENT OF THE EFFECTIVE STATIC FLOW RESISTANCE IN STRATIFIED of a new method for the measurement of the dynamic flow resistance based on the electrical analogy

Fernández de Córdoba, Pedro

130

Solar proton events in cosmogenic isotope data Ilya G. Usoskin,1  

E-Print Network (OSTI)

Solar proton events in cosmogenic isotope data Ilya G. Usoskin,1 Sami K. Solanki,2 Gennady A March 2006; published 27 April 2006. [1] A possible contribution of solar energetic particle events to the production of cosmogenic 10 Be and 14 C in the atmosphere is studied. The solar particle effect is negligible

Usoskin, Ilya G.

131

Redshifts of 1548 + 115a and 1548 + 115b in the theory of the generalised gravitational potential  

Science Journals Connector (OSTI)

... with the microscopic scalar field in Y. When this theory is applied to the "Schwarzschild" problem for the nucleus, where the Newton?Einstein constant is negligible, the integration ... stellar body to that of the density D0 of the nucleon. Because of the "Schwarzschild" singularity we must also have in this theory that zG < 1. And for ...

NORMAN H. CHERRY

1974-07-12T23:59:59.000Z

132

The Solar Spoon  

Science Journals Connector (OSTI)

... too. In particular it is normally assumed that the solar core remains unmixed because the Schwarzschild criterion for convective stability5-6 is satisfied. Although Opik has suggested that diffusion of ... of a main sequence star the thermonuclear generation of energy has negligible effect on the Schwarzschild criterion, because the timescale for generating energy is very much greater than the growth ...

F. W. W. DILKE; D. O. GOUGH

1972-12-01T23:59:59.000Z

133

Magnetism of Celestial Bodies and Gravitation  

Science Journals Connector (OSTI)

... same conclusion is valid if the field of force inside the body is given by Schwarzschild‘s line element for a spherical incompressible fluid. This can be easily checked by ... between these volumes, the supplementary energy obtained in this way is not negligible. In Schwarzschild‘s case, with a as the Euclidean radius of the sphere, we get7: ...

J. MARIANI

1948-10-16T23:59:59.000Z

134

Seveso 1976, Chernobyl 1986: fractal description of two ecological disasters  

E-Print Network (OSTI)

) but there a lethal gas was distributed in the atmosphere, and no systematic measurements were performed which might accident released a negligible amount of radioactive nuclides and cannot be considered as a major event. This paper is applicative in nature as it describes the fractal properties shown by the pollutant

Ratti, Sergio P.

135

Gravitational dispersion in a torsional wave machine  

E-Print Network (OSTI)

We demonstrate that mechanical waves traveling in a torsional, mechanical wave machine exhibit dispersion due to gravity and the discreteness of the medium. We also show that although the dispersion due to discreteness is negligible, the dispersion due to gravity can be easily measured, and can be shown to disappear in a zero-gravity environment.

Rafael de la Madrid; Alejandro Gonzalez; George Irwin

2014-09-01T23:59:59.000Z

136

Chapter 1 - Greene v. Holy Spirit Hospital  

Science Journals Connector (OSTI)

A young female employee of the Holy Spirit Hospital was abducted from the parking ramp, taken to an isolated area not far from the hospital, forcibly raped, and, during the rape, strangled to death and her body abandoned. The hospital was sued by the victim’s surviving family members. The lawsuit alleged the hospital’s security program was negligent and inadequate.

Charles A. Sennewald

2014-01-01T23:59:59.000Z

137

Titanium dioxide based high temperature carbon monoxide selective sensor  

E-Print Network (OSTI)

Titanium dioxide based high temperature carbon monoxide selective sensor Nancy O. Savagea , Sheikh as a trap for the oxidation products of CO and CH4. Upon oxidation of CO on ALC, carbonate species were detected, whereas the reaction of CH4 produced negligible carbonate species. The insensitivity of the ALC

Dutta, Prabir K.

138

Charged Pion Photoproduction on the p-Shell Nuclei at Low Energy and Rescattering Effect of a Pion  

Science Journals Connector (OSTI)

......depends upon the nuclear structure. 1. Introduction The low energy charged pion photoproduction...I5N, while this nuclear model reproduces...region at low energy, but it is not...pointed out that nuclear configuration with higher energy plays non-negligible......

Naoto Odagawa; Toru Sato; Hisao Ohtsubo

1991-12-01T23:59:59.000Z

139

Emerging approaches, challenges and opportunities in life cycle assessment  

Science Journals Connector (OSTI)

...on environmental benefits and costs before money is invested in new...Acidification impacts of hydro and nuclear are not shown because they were negligible...1021/es2030577 16 BSI, BS EN 15804:2012 + A1:2013 Sustainability...mass, fuel consumption and costs of energy conversion equipments...

Stefanie Hellweg; Llorenç Milà i Canals

2014-06-06T23:59:59.000Z

140

The dynamics and high-energy emission of conductive gas clouds in supernova-driven galactic superwinds  

Science Journals Connector (OSTI)

......with negligible N O iv , as increased T BS leads to stronger cloud compression and...than they otherwise would, but at the cost of losing mass to evaporative heating...Stars and ISM in Galactic Nuclei Winds from Nuclear Starbursts: Old Truths and Recent Progress......

A. Marcolini; D. K. Strickland; A. D'Ercole; T. M. Heckman; C. G. Hoopes

2005-09-11T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


141

Molecular carbon isotopic evidence for the origin of geothermal hydrocarbons  

Science Journals Connector (OSTI)

... in the flask's headspace. This procedure produced negligible amounts of contaminating hydrocarbons. The geothermal hydrocarbons were separated and combusted, and the carbon dioxide product purified and measured using ... of the pyrolysis and spark discharge experiments, b, Isotopic abundance of hydrocarbons from four geothermal localities as follows: D, Cerro Prieto, well M-5, sampled January 1979; ...

David J. Des Marais; Jason H. Donchin; Nancy L. Nehring; Alfred H. Truesdell

1981-08-27T23:59:59.000Z

142

APRIL 2006 MOUM ET. AL. 1 Energy Transport by Nonlinear Internal Waves  

E-Print Network (OSTI)

APRIL 2006 MOUM ET. AL. 1 Energy Transport by Nonlinear Internal Waves J. N. MOUM1 , J. M. KLYMAK2. The energy transported by these waves includes a nonlinear advection term uE that is negligible in linear internal waves. Unlike linear internal waves, the pressure-velocity energy flux up includes important

143

SEPTEMBER 2006 MOUM ET. AL. 1 Energy Transport by Nonlinear Internal Waves  

E-Print Network (OSTI)

SEPTEMBER 2006 MOUM ET. AL. 1 Energy Transport by Nonlinear Internal Waves J. N. MOUM1 , J. M of coastline. The energy transported by these waves includes a nonlinear advection term uE that is negligible in linear internal waves. Unlike linear internal waves, the pressure-velocity energy flux up includes

144

Energy Transport by Nonlinear Internal Waves College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon  

E-Print Network (OSTI)

Energy Transport by Nonlinear Internal Waves J. N. MOUM College of Oceanic and Atmospheric Sciences in the bottom bound- ary layer. In the nonlinear internal waves that were observed, the kinetic energy. The energy transported by these waves includes a nonlinear advection term uE that is negligible in linear

Kurapov, Alexander

145

High-Current Gas Discharge at Low Pressures  

Science Journals Connector (OSTI)

... Probe measurements in a mercury-vapour arc tube (diameter 54 mm.) at pressures less than 10-3 mm. show that ... than 10-3 mm. show that at currents greater than 50 amp. the radial_electric field Es is negligible compared to the term w1H except close to the tube walls ...

P. C. THONEMANN; W. T. COWHIG

1950-11-25T23:59:59.000Z

146

Rock-magnetic analyses as a tool to investigate archaeological fired sediments: a case study of Mirador cave (Sierra de Atapuerca, Spain)  

Science Journals Connector (OSTI)

......injected by the same means into plaster capsules specifically designed...magnetization (NRM) of the plaster recipient is negligible compared...of magnitude lesser). The plaster samples were impregnated with...silicate (water-glass) to consolidate them. Figure 3. (a) Low-field......

Á. Carrancho; J. J. Villalaín; D.E. Angelucci; M. J. Dekkers; J. Vallverdú; J. M. Vergès

2009-10-01T23:59:59.000Z

147

The mechanism of coherent radio emission in some classes of pulsar  

Science Journals Connector (OSTI)

......an ion-proton plasma was 10-60-MHz, i.e. in the...found the 160-MHz emission of the...large-multiplicity pair plasma for any emission...difficult owing to atmospheric opacity, would...any ion-proton plasma would have a negligible......

P. B. Jones

2014-01-01T23:59:59.000Z

148

Comparative evolution: latent potentials for anagenetic advance  

Science Journals Connector (OSTI)

...on an island to a swimming penguin that hatches...improve- ments in the efficiency of the process may...increments in functional efficiency result in negligible...within their gene pools genes or gene combinations...respect to gene pools and genetic potentialities...source of carbon and energy in chemostats...

G L Stebbins; D L Hartl

1988-01-01T23:59:59.000Z

149

Filtration of submicrometer particles by pelagic tunicates  

Science Journals Connector (OSTI)

...too frequently for swimming to be effective...Particle encounter efficiency predicted for P...negligible sieving efficiency, yet...a longer-lived pool in deeper water...centuries. The efficiency with which salps...transfer carbon and energy from the submicron size...

Kelly R. Sutherland; Laurence P. Madin; Roman Stocker

2010-01-01T23:59:59.000Z

150

A methodology to evaluate the competitiveness of electric delivery trucks Brian A. Davis, Miguel A. Figliozzi  

E-Print Network (OSTI)

constraints, speed profiles, energy consump- tion, and vehicle ownership costs is developed. The model like electricity cost that are current in the US (as of June 2012) and easily obtained from vehicle, the stress on the electricity grid caused by these vehicles is negligible, and their effects on the cost

Bertini, Robert L.

151

J. Phj's. III France 5 (1995) 1917-1921 OCTOBER1995, PAGE 1917 Classification  

E-Print Network (OSTI)

on humans and on the environment depends on their energy. Nuclear tests and accidents can result for a point source in different media. 1. Introduction As a result of increasing use of nuclear energy are disregarded because their effects are negligible. For the change of reaction cross-section with energy

Paris-Sud XI, Université de

152

2, 299329, 2005 SAM: Role of thermal  

E-Print Network (OSTI)

. On the other hand, the thermal forcing has a negligible effect on the ocean currents. For sea ice, both Version Interactive Discussion EGU Ocean Science Discussions, 2, 299­329, 2005 www.ocean-science.net/osd/2/299/ SRef-ID: 1812-0822/osd/2005-2-299 European Geosciences Union Ocean Science Discussions Papers published

Paris-Sud XI, Université de

153

Sustained H2 Production Driven by Photosynthetic Water Splitting in a Unicellular Cyanobacterium  

Science Journals Connector (OSTI)

...suggest that carbohydrate consumption in the light may, at best...experiment, when carbohydrate consumption is negligible. These results...cylindrical borosilicate glass vessel housed within a custom-manufactured...Cyanothece 51142. Net carbohydrate consumption and H2 production under Ar-CO2...

Matthew R. Melnicki; Grigoriy E. Pinchuk; Eric A. Hill; Leo A. Kucek; Jim K. Fredrickson; Allan Konopka; Alexander S. Beliaev

2012-08-01T23:59:59.000Z

154

A simple column model to explore anticipated problems in variational assimilation of satellite observations  

E-Print Network (OSTI)

A simple column model to explore anticipated problems in variational assimilation of satellite Office, Exeter, UK Abstract We investigate a simplified form of variational data assimilation in a fully of nonlinearity become non-negligible in the variational data assimilation algorithm. A careful analysis

Roulstone, Ian

155

Assessment of the renewable groundwater resources of Wadi El-Arish, Sinai, Egypt, by using remote sensing, digital terrain elevation, and meteorological data  

SciTech Connect

The authors show that the most popular method to simulate Bose-Einstein (BE) interference effects predicts negligible correlations between identical pions originating from the hadronic decay of different W's produced in e{sup +}e{sup {minus}} {yields} W{sup +}W{sup {minus}} {yields} 4 jets at typical linear collider energies.

Gheith, H. M.; Sultan, M. I.

2000-01-24T23:59:59.000Z

156

Wal-Mart could explore the option to sell generated electricity to the  

E-Print Network (OSTI)

Analysis on two types of renewable energy projects 3. Cost-Benefit Analysis considering FIT Financial%/year Accelerated Capital Cost Allowance (ACCA)[2] ·Application fee is negligible ·Conduct a Cost-Benefit than wind ·No major overhaul cost ·Lower annual maintenance cost 5. Solar is the Winner! 7. References

Sun, Yu

157

Welcome to the Entropics: Boot-Time Entropy in Embedded Devices Keaton Mowery, Michael Wei, David Kohlbrenner, Hovav Shacham, and Steven Swanson  

E-Print Network (OSTI)

Welcome to the Entropics: Boot-Time Entropy in Embedded Devices Keaton Mowery, Michael Wei, David- tropy during boot on embedded devices. Our first technique times the execution of code blocks early in the Linux kernel boot process. It is simple to implement and has a negligible runtime overhead, but, on many

Simunic, Tajana

158

Page 264 Courses: Business Administration (BUS) Sonoma State University 2012-2013 Catalog Business Administration (BUS)  

E-Print Network (OSTI)

of consumer protection, antitrust, labor and employment law. BUS 230a financial accoUnting (4) A foundation, legal protection, insurance, investments, retirements, retirement planning, and estate planning emphasizes the sources, functions and processes of law. It surveys a number of areas, including negligence

Ravikumar, B.

159

JOURNAL DE PHYSIQUE CoZZoque C7, suppZ6ment au n07, Tome 40, JuiZZet 1979, page C7-243 THE ARC DIAMETER AND RATE OF ROTATIONff A MAGNETICALLY  

E-Print Network (OSTI)

. It has been shown (1)that cathode erosion is negligible and that anode lifetime is depend- ent upon, velocity, anode root Fig. 3 Pholographs of arc, DOA, 160V. 20 I/min. hydrog:.,~. velocity and the drag terminated in a water cooled nozzle (anode). A water cooled rod, tipped with thoriated tungsten served

Boyer, Edmond

160

Recycling flows in eMergy evaluation: A Mathematical Paradox? N.Y. Amponsah, O. Le Corre1  

E-Print Network (OSTI)

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Recycling involving recycling or reuse of waste. If waste exergy (its residual usefulness) is not negligible, wastes could serve as input to another process or be recycled. In cases of continuous waste recycle or reuse

Paris-Sud XI, Université de

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While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


161

Exciton harvesting, charge transfer, and charge-carrier transport in amorphous-silicon nanopillar/polymer hybrid solar cells  

E-Print Network (OSTI)

report on the device physics of nanostructured amorphous-silicon a-Si:H /polymer hybrid solar cells and nanostructured a-Si:H/polymer systems. We find that strong energy transfer occurs in the a-Si:H/MEH-PPV system. However, inefficient hole transfer from the a-Si:H to the polymers renders negligible photocurrent

McGehee, Michael

162

AVOIDING ILLEGAL STATES IN PSEUDORANDOM TESTING OF DIGITAL CIRCUITS  

E-Print Network (OSTI)

94305-9020 Abstract: Many digital circuits have constraints on the logic values a set of signal lines test results. Our techniques require minimal change to the design and impose almost negligible delay overhead. Simulation results show that the area overhead of our techniques is less than 1% for applying

Stanford University

163

The intrinsic interfacial structure of ionic surfactant monolayers at water–oil and water–vapour interfaces  

Science Journals Connector (OSTI)

...surfactant-vacuum and SDS-oil interfaces using the SDS...features a delta function peak at the CH3 position...figure-1 a shows that the oil molecules have a negligible...by the presence of the oil. The water molecules...region (z0), there is a peak in the density profile...

2011-01-01T23:59:59.000Z

164

656 VOLUME 14J O U R N A L O F C L I M A T E 2001 American Meteorological Society  

E-Print Network (OSTI)

oscillatory ocean-only mode. The insulating capacity of the variable sea ice has a negligible effect656 VOLUME 14J O U R N A L O F C L I M A T E 2001 American Meteorological Society The Role of Ice The simulated influence of Arctic sea ice on the variability of the North Atlantic climate is discussed

165

Energy Harvesting Communications with Hybrid Energy Storage and Processing Cost  

E-Print Network (OSTI)

Energy Harvesting Communications with Hybrid Energy Storage and Processing Cost Omur Ozel Khurram with an energy harvesting transmitter with non-negligible processing circuitry power and a hybrid energy storage for energy storage while the battery has unlimited space. The transmitter stores the harvested energy either

Ulukus, Sennur

166

Screening of Carcinogens with the Prophage ?clts857 Induction Test  

Science Journals Connector (OSTI)

...some 7 below that (42 )for optimal thermal induction of the mutant prophage, contribution from thermal induction alone was expected to be negligible...1972. 15. McCann, J. Results of a battery of short-term tests on highly purified...

Yuk L. Ho and Shiu K. Ho

1981-02-01T23:59:59.000Z

167

The effects of humming and pitch on craniofacial and craniocervical morphology measured using MRI  

E-Print Network (OSTI)

The effects of humming and pitch on craniofacial and craniocervical morphology measured using MRI, pitch-related contributions are inseparable from those due to articulator input. In humming, articulator input is negligible. Using MRI we test the hypothesis that voice production is accompanied by pitch

Levi, Ran

168

Book Reviews  

Science Journals Connector (OSTI)

...inter-molecular effects are not negligible, as well as the effect of thermal motions and the Faurier method of analysing diffrac-tion data...Bovidae of French Equatorial Africa (from the Congo to the Sudan and Rio de Oro), by Paul Rode; one on the Scarabaeid beetles...

1947-01-10T23:59:59.000Z

169

Efficient Virtual Memory for Big Memory Servers Our analysis shows that many "big-memory" server workloads,  

E-Print Network (OSTI)

-memory" server workloads, such as databases, in-memory caches, and graph analytics, pay a high cost for page introduced [13]. In contrast, virtual memory usage has changed dramatically in recent years. For example-negligible energy [5, 41] To reevaluate the cost and benefit of decades-old page-based vir- tual memory in today

Hill, Mark D.

170

Complex Refractive Indices of Thin Films of Secondary Organic Materials by Spectroscopic Ellipsometry from 220 to 1200 nm  

E-Print Network (OSTI)

particles were produced in a flow tube reactor by ozonolysis of volatile organic compounds, including. By comparison, the UV absorption of the monoterpene-derived SOMs was negligible. On the basis of the measured and mode diameter. 1. INTRODUCTION Aerosol particles directly influence Earth's radiative balance

171

Size Ratio Effects on Interparticle Interactions and Phase Behavior of Microsphere-Nanoparticle Mixtures  

E-Print Network (OSTI)

Size Ratio Effects on Interparticle Interactions and Phase Behavior of Microsphere-Nanoparticle and phase behavior of microsphere-nanoparticle mixtures of high charge asymmetry and varying size ratio. In the absence of nanoparticles, negligibly charged microspheres flocculate as a result of van der Waals

Lewis, Jennifer

172

Ratcheting up energy by means of measurement  

E-Print Network (OSTI)

The destruction of quantum coherence can pump energy into a system. For our examples this is paradoxical since the destroyed correlations are ordinarily considered negligible. Mathematically the explanation is straightforward and physically one can identify the degrees of freedom supplying this energy. Nevertheless, the energy input can be calculated without specific reference to those degrees of freedom.

L. S. Schulman; B. Gaveau

2006-11-15T23:59:59.000Z

173

Experimental validation of the Intergovernmental Panel on Climate Change default values for ruminant-derived  

E-Print Network (OSTI)

conversion rate (Ym; Tier 2 method), describing the percentage of gross feed energy lost as CH4. The IPCC the highest CH4 conversion rate (Ym 7.9%). Negligible amounts of CH4 were emitted from slurries stored at low enrichment factors eCO2-CH4 for maize (33.2) and hay (35.9). Compared with the Intergovernmental Panel

Gilli, Adrian

174

Cycling firing method for bypass operation of bridge converters  

SciTech Connect

The bridge converter comprises a number of switching elements and an electronic logic system which regulated the electric power levels by controlling the firing, i.e., the initiation of the conduction period of the switching elements. Cyclic firing of said elements allows the direct current to bypass the alternating current system with high power factor and negligible losses.

Zabar, Zivan (99-72 66th Rd., Apt. 9N, Forest Hills, NY 11375)

1982-01-01T23:59:59.000Z

175

3-D imaging of Marlborough, New Zealand, subducted plate and strike-slip fault systems  

Science Journals Connector (OSTI)

......vertically before the necking process activates. Their numerical...the course of the detachment process. Negligible mantle upwelling...heterogeneity and subduction processes: 3-D Vp, Vp/Vs and Q...Am. geophys. Un., Fall Mtg abstracts, T41A-31. Michelini......

Donna Eberhart-Phillips; Stephen Bannister

2010-07-01T23:59:59.000Z

176

High-Sulfur Coal for Generating Electricity  

Science Journals Connector (OSTI)

...made historically by heating bitumi-nous coal in...heart of the anthracite district only about 5 years ago...energy, wind, and geothermal steam and brines, will...15.7 Nuclear 3.1 Geothermal Negligible 1973, use...home and commercial heating, transporta-tion...

James T. Dunham; Carl Rampacek; T. A. Henrie

1974-04-19T23:59:59.000Z

177

FLUID MECHANICS AND HEAT TRANSFER OF ELECTRON FLOW IN SEMICONDUCTORS  

E-Print Network (OSTI)

= heat, f = LO-mode, g = LO, h = LA-mode, i = negligible, j = remote heat sink 7/ 70 #12;Heat conductionFLUID MECHANICS AND HEAT TRANSFER OF ELECTRON FLOW IN SEMICONDUCTORS Mihir Sen Department · Shallow water analogy · Vorticity dynamics · Linear stability analysis · Numerical simulations of heat

Sen, Mihir

178

PROPRIETARY MATERIAL. 2011 The McGraw-Hill Companies, Inc. Limited distribution permitted only to teachers and educators for course preparation. If you are a student using this Manual, you are using it without permission.  

E-Print Network (OSTI)

to compress the air as the tank was being filled are to be determined. Assumptions 1 Changes in the kinetic and potential energies are negligible. 4 Air is an ideal gas with constant specific heats. Properties it without permission. 8-130 8-129 A system consisting of a compressor, a storage tank, and a turbine

Bahrami, Majid

179

Time-optimal transfer of coherence  

Science Journals Connector (OSTI)

We provide exact analytical solutions for the problem of time-optimal transfer of coherence from one spin-polarization to a threefold coherence in a trilinear Ising chain with a fixed energy available and subject to local controls with a non-negligible time cost. The time of transfer is optimal and consistent with a previous numerical result obtained assuming instantaneous local controls.

Alberto Carlini and Tatsuhiko Koike

2012-11-26T23:59:59.000Z

180

TO APPEAR IN TRANSACTIONS ON MOBILE COMPUTING, 2013 1 IVC in Cities: Signal Attenuation by Buildings  

E-Print Network (OSTI)

of energy consumption is negligible. We performed an extensive set of simulations to evaluate the negativeTO APPEAR IN TRANSACTIONS ON MOBILE COMPUTING, 2013 1 IVC in Cities: Signal Attenuation obstacles, especially in cities. Typical concepts address this problem by requiring all vehicles to also act

Breu, Ruth

Note: This page contains sample records for the topic "negligible negligible negligible" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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181

True Performance Metrics in Electrochemical Energy Storage  

Science Journals Connector (OSTI)

...capacitance. An extreme case would be the use of a carbon aerogel with 90% porosity. The volumetric energy of such an electrode will...material used in a micrometer-thin film on a chip or a nanotube coating on a smart fabric is negligible. These systems may show a...

Y. Gogotsi; P. Simon

2011-11-18T23:59:59.000Z

182

Figure 1: Artificially colored image of the plasma produced with a cylindrical lens. The laser travels in the Z-  

E-Print Network (OSTI)

-dimension to form a long focus. Progress on Plasma Lens Experiments at the Final Focus Test Beam* P. Kwok2, P. Chen of the supersonic gas jet as the plasma source, and study on focused beam size measurement techniques. Most demonstrate plasma focusing in a setting close to the true high energy collider with negligible induced

McDonald, Kirk

183

PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073  

E-Print Network (OSTI)

and evaluated for driving rotation in tokamak plasmas by minority ion-cyclotron heating, even though velocity appearing in response to minority ion-cyclotron fast-wave heating raise this question since minority ion-cyclotron heating is a negligible angular momentum source. This article proposes and evaluates

184

ccsd-00002450,version1-4Aug2004 Boundary layers and emitted excitations in  

E-Print Network (OSTI)

and Bose-Einstein condensates of ultra-cold atomic vapor. In the case of superfluid 4 He, the NLSE can to be negligible. This is clearly the case in recent experiments [5] that are performed at temperatures below 130 mK

185

ccsd00002450, Boundary layers and emitted excitations in  

E-Print Network (OSTI)

and Bose-Einstein condensates of ultra-cold atomic vapor. In the case of super uid 4 He, the NLSE can to be negligible. This is clearly the case in recent experiments [5] that are performed at temperatures below 130 mK

186

Practical Operation of Prep-Scale Gas Chromatographic Units  

Science Journals Connector (OSTI)

......given in Table I. The cost of a recycling unit is...nitrogen is used as carrier gas. For narrower columns it depends on the length of production cycles. Once a recycling unit is used, the carrier gas cost becomes negligible, and......

B. Roz; R. Bonmati; G. Hagenbach; P. Valentin; G. Guiochon

1976-08-01T23:59:59.000Z

187

A three-parameter dispersion relationship for Biot's fast compressional wave in a marine sediment  

E-Print Network (OSTI)

in an unconsolidated, saturated porous medium such as a ma- rine sediment. Based on the classical theory of Biot2 wave is negligible, if present at all,5­10 in satu- rated, unconsolidated granular materials as a defining feature of an unconsolidated sediment. Two types of wave emerge from Buckingham's model, a fast

Buckingham, Michael

188

Compressional and shear wave properties of marine sediments: Comparisons between theory and data  

E-Print Network (OSTI)

, unconsolidated marine sedi- ments. It is evident from the data that an unconsolidated sediment is capable discussion that the slow wave in an unconsolidated sediment is negligible if not absent alto- gether propagation in an unconsolidated granular medium, that is to say, a material in which the mineral grains

Buckingham, Michael

189

Hydrodynamical modeling of targets compression to high densities  

E-Print Network (OSTI)

by composite schemes on moving grid. Both models also include heat conductivity. The quotidian equation, E is total energy and heat flux W is given by W = - grad T (2) where T is temperature and is heat note that for most presented computations the heat conductivity is negligible. The above system

Limpouch, Jiri

190

Underwater in situ measurements of radionuclides in selected submarine groundwater springs, Mediterranean Sea  

Science Journals Connector (OSTI)

......At the highest part of energy spectrum, the peak at...The analysis of the two energy lines of 214Bi (609...negligible laborious costs. It can also be applied...International Atomic Energy Agency is grateful for...concentration in waters of geothermal Euganean basin-Veneto......

C. Tsabaris; J. Scholten; A. P. Karageorgis; J.-F. Comanducci; D. Georgopoulos; L. Liong Wee Kwong; D. L. Patiris; E. Papathanassiou

2010-12-01T23:59:59.000Z

191

Abstract--While the connectivity, sensing, and computational capabilities of today's smartphones have increased, congestion in  

E-Print Network (OSTI)

to pollution in the air. In a traditional pollution monitoring system, a handful of sites across a region of pollution with error of maximum 0.5 ppm, a negligible amount for the application of interest. Index Terms of interest are carefully selected for the deployment of air quality monitoring equipment [3]. However

Simunic, Tajana

192

STUDENT MENTAL HEALTH POLICY  

E-Print Network (OSTI)

pastoral care as well as teaching Take positive steps to promote students well-being Ensure the health students to make contact with their GP or local mental health services. The Duty of Care and Negligence1 STUDENT MENTAL HEALTH POLICY Revised January 2013 #12;2 A. INTRODUCTION 1. Context Widening

Martin, Ralph R.

193

Astronomy & Astrophysics manuscript no. 16193paper.hyper2884 c ESO 2010 December 13, 2010  

E-Print Network (OSTI)

disc. We measured the dusty disc inner inner rim, i.e. 6 mas, constrained the inclination angle of the dense equatorial disc. Moreover, as the expansion velocity is negligible, radiatively driven wind). Fast rotation of the star leads to an expanding disc-like wind in the case of very massive stars

Boyer, Edmond

194

PHYSICAL REVIEW 8 VOLUME NVMBEH. 4 &5 I.ESHUAHY Nonadditive forces and vacancies in rare-gas crystals  

E-Print Network (OSTI)

PHYSICAL REVIEW 8 VOLUME NVMBEH. 4 &5 I.ESHUAHY»» Nonadditive forces and vacancies in rare since overlap between adjacent atoms is small. A molecular model of the vacancy problem is set up. It is then seen that short-range three-body forces contribute a negligible fraction of the vacancy formation

Glyde, Henry R.

195

Black Holes and Relativistic Jets  

Science Journals Connector (OSTI)

......negligible internal resistance and can drive current...that the effective resistance of the horizon is effectively...angular velocity and resistance of the load and the...radiation. Given the large electric fields present in the...describe it in terms of elementary principles. Simulations......

R. D. Blandford

2001-05-01T23:59:59.000Z

196

ELECTRICAL STIMULATION OF THE INTERNODES OF SINGLE FIBERS OF NERVES WITH INTACT SHEATH  

Science Journals Connector (OSTI)

...electrodes at its surface. The resistance of the nodes is given with...is that the presence of low resistance nodes resulted only in unessential...practically undetectable. An elementary but essentially correct argument...nodes of relatively very low resistance can have only a negligible...

R. Lorente de Nó; V. Honrubia

1964-01-01T23:59:59.000Z

197

Self-organization of the fluid mosaic of charged channel proteins in membranes  

Science Journals Connector (OSTI)

...K is scaled by the electric length constant {M...density, however, the electric effect of increasing...a bath of negligible resistance. The coupled dynam...potential E?, and the resistance r1 are to be determined...membrane potential) in two elementary geometries (free cable...

P Fromherz

1988-01-01T23:59:59.000Z

198

OTGsim: Simulation of an Off-the-Grid Radar Network with High Sensing Energy Cost  

E-Print Network (OSTI)

OTGsim: Simulation of an Off-the-Grid Radar Network with High Sensing Energy Cost Brian C. Donovan|kurose@cs.umass.edu Abstract--Many sensor network studies assume that the energy cost for sensing is negligible compared sensors with a high energy cost such as radar. For a node utilizing radar as its primary sensor

Kurose, Jim

199

Introduction: In this task you will be asked to assess the quality of student solutions to a physics exam  

E-Print Network (OSTI)

. Your job is to calculate the direction and magnitude of the electric field needed so that CO+ ions conservation of energy to relate the electric potential energy transferred to the molecule and its final kinetic energy. Assume gravity is negligible. Convert the mass of CO into kilograms per molecule. ( ) ( )( ) ( )( )

Minnesota, University of

200

Scaling of strength and lifetime probability distributions of quasibrittle structures based  

E-Print Network (OSTI)

law for subcritical creep crack growth, hitherto considered empirical. The theory is further extended of the cdf of structural strength and lifetime is outlined. cohesive fracture | crack growth rate | extreme distribution exists only for perfectly brittle structures failing at macro- crack initiation from a negligibly

Bazant, Martin Z.

Note: This page contains sample records for the topic "negligible negligible negligible" 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

IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 55, NO. 7, JULY 2007 3787 An Approximately MAI-Free Multiaccess OFDM  

E-Print Network (OSTI)

- tiplexing (OFDM) transceiver with preceding, called the precoded multiuser OFDM (PMU-OFDM) system, was recently introduced by Tsai et al. (2005). The PMU-OFDM system can reduce multiac- cess interference (MAI) due to the carrier frequency offset (CFO) to a negligible amount by preceding the data of each user

Kuo, C.-C. "Jay"

202

JOURNAL DE PHYSIQUE Colloque C6, suppl6ment au no 8, Tome 39, aolit 1978,page C6-1039 RESONANCES IN GENERALIZED SUSCEPTIBILITY AND PHONON ANOMALIES IN YS  

E-Print Network (OSTI)

, the remarkable nesting features of the Fermi surfaces of the 9 valence electrons transition metal chalcogenides. Contrary to the transi- tion metal carbides, the p-d hybridization at the Fermi level is negligible for YS / l / in the 9 and 10 valence electrons (ve) transition metal chalchogenides (TMC) such as NbC, Ta

Paris-Sud XI, Université de

203

The Jahn–Teller effect in the 3pe? Rydberg state of H3: review of experimental and ab initio determinations  

Science Journals Connector (OSTI)

...capture by deltav 2=2 does make a non-negligible...the quantum-chemical calculations for n3 remains to be...G. Watson 1980 The electronic emission spectrum of...G. Watson 1981 The electronic emission-spectrum...quantum defect theory. In Handbook of high-resolution...

2012-01-01T23:59:59.000Z

204

Dimensional reduction and quantum-to-classical reduction at high temperatures  

Science Journals Connector (OSTI)

We discuss the relation between dimensional reduction in quantum field theories at finite temperature and a familiar quantum-mechanical phenomenon that quantum effects become negligible at high temperatures. Fermi and Bose fields are compared in this respect. We show that decoupling of fermions from the dimensionally reduced theory can be related to the nonexistence of classical statistics for a Fermi field.

M. A. Stephanov

1995-09-15T23:59:59.000Z

205

Enhancing Jc(B,theta) in YBa2Cu3O7-delta via nano-engineering of pinning structures  

E-Print Network (OSTI)

the YBCO lattice resulting in unnecessary degradation of Tc and low field Jc. In this work, two types of strong pinning centers with negligible effect on the Tc and low field Jc were incorporated in YBCO films via strain engineering on the nanoscale...

Emergo, Rose Lyn S.

2009-04-29T23:59:59.000Z

206

Target Tracking Using Delayed Measurements with Implicit Constraints  

E-Print Network (OSTI)

with a negligible delay, since the speed of light is much larger than the speed of the target. This contribution the speed of light is much larger than the speed of the target. One further example relating to sensor speed (Doppler measurement). The delay k can be described as a function of the position (and hence

Gustafsson, Fredrik

207

Production of higher silanes in radio frequency SiH{sub 4} and H{sub 2}-SiH{sub 4} plasmas  

SciTech Connect

Stable gases produced in SiH{sub 4} and H{sub 2}-SiH{sub 4}, capacitively coupled rf discharges operated at typical device-production conditions, were investigated by quadrupole mass spectrometry. The production of disilane and trisilane and the depletion of silane and pressure change were measured during consecutive short discharges. Dissociation rate constants and branching ratios for higher-silane production are obtained from the time-dependent densities. The influence of suspended Si particles on stable-gas production is found to be negligible, by changing the duration of individual discharges and thereby the particle densities and sizes. We have also observed pyrolitic decay of disilane and trisilane at 200 deg. C, although this is negligible under normal reactor conditions.

Horvath, P.; Rozsa, K.; Gallagher, A. [JILA, University of Colorado and National Institute of Standards and Technology, 440 UCB, Boulder, Colorado 80309-0440 (United States)

2004-12-15T23:59:59.000Z

208

Search for the decay B? D(+)(s1) (2536)X  

E-Print Network (OSTI)

. J. Thaler -Champaign, Illinois 61801 wards Ontario, Canada K1S 5B6 icle Physics, Canada MacFarlane, and P. M. Patel Que´bec, Canada H3A 2T8 icle Physics, Canada doff , New York 14850 . Darling, R. Davis, S. Kotov, I. Kravchenko, N. Kwak, Zhou 57I et... stringent RK.0.9 requirement on the K1 with negligible loss of efficiency. The Ds1 1 candidates are required to have a scaled momentum xp5pD s1 1 / A Ebeam 2 2M D s1 1 2 ,0.45, which is the kinematic limit for B!Ds11 X decays. ~We ignore the negligible...

Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L.

1998-04-01T23:59:59.000Z

209

Surface-Induced Dissociation of Polyatomic Hydrocarbon Projectile Ions with Different Initial Internal Energy Content  

Science Journals Connector (OSTI)

Whereas projectile ions from the Colutron source are thermalized due to collisions in the high pressure environment and thus contained a negligible amount of internal energy, projectile ions from the Nier-type ion source resulting from direct electron impact ionization reactions have internal energies up to several eV. ... Results obtained here show that their different initial internal energy content had a considerable effect on the extent of fragmentation of the surface-excited projectile ions:? ions with initial internal energy fragmented at much lower collision energies than internally relaxed projectile ions. ... The difference is due to the fact that the ions produced in the Colutron source have low or negligible internal energies, whereas ions formed by electron impact ionization in the low-pressure Nier-type source contain some excitation energy, which can be estimated using the information from break-down curves and photoelectron spectra of the systems in question. ...

A. Qayyum; Z. Herman; T. Tepnual; C. Mair; S. Matt-Leubner; P. Scheier; T. D. Märk

2003-12-11T23:59:59.000Z

210

Radiation hardness of cerium-doped gadolinium silicate Gd2SiO5:Ce against high energy protons, fast and thermal neutrons  

Science Journals Connector (OSTI)

Degradation of Gd2SiO5:Ce in optical transmittance due to proton irradiation was negligibly small below 106 rad, smaller than 2%/cm at 107 rad and large at 108 rad. The radiation hardness of 107 rad against protons is by two orders of magnitude smaller than against low energy ?-rays. Long term spontaneous recovery of the proton-induced damage is not large (10–20% of the initial degradation in 84 days). Recovery upon exposure to UV light occurs to some extent. Degradation due to thermal neutrons was negligibly small for a fluence of 1014 n/cm2. No degradation was observed for exposure to fast neutrons of about 1013 n/cm2 during one year in the extracted beam tunnel of proton synchrotron.

Masaaki Kobayashi; Masaharu Ieiri; Kenjiro Kondo; Taichi Miura; Hiroyuki Noumi; Masaharu Numajiri; Yuichi Oki; Takenori Suzuki; Minoru Takasaki; Kazuhiro Tanaka; Yutaka Yamanoi; Mitsuru Ishii

1993-01-01T23:59:59.000Z

211

Weak interaction corrections to hadronic top quark pair production: contributions from quark-gluon and $b \\bar b$ induced reactions  

E-Print Network (OSTI)

As an addendum to our previous evaluation of the weak-interaction corrections to hadronic top-quark pair production we determine the leading weak-interaction contributions due to the subprocesses $b {\\bar b} \\to t {\\bar t}$ and $g q ({\\bar q}) \\to t {\\bar t} q ({\\bar q})$. For several distributions in $t {\\bar t}$ production at the LHC we find that these contributions are non-negligible as compared to the weak corrections from the other partonic subprocesses.

Werner Bernreuther; Michael Fuecker; Zong-Guo Si

2008-04-08T23:59:59.000Z

212

Measurement of the Energy Relaxation Time in rf SQUID Flux Qubits  

E-Print Network (OSTI)

was negligible down to 10 mK. 35 0.26 0.27 0.28 0.29 0.30 0.31 0.32 0 1000 2000 3000 4000 5000 P1 Current Pulse Amplitude ? |1> 1 0 sP |0> FIG. 2.11. dc SQUID switching probability as a function of the amplitude of the applied current...

Qiu, Wei

2007-12-17T23:59:59.000Z

213

CO2 Laser CVD of Disilane  

Science Journals Connector (OSTI)

Amorphous silicon films were deposited by a CO2 laser CVD (chemical vapor deposition) method using disilane gas. With this gas, the films were deposited reasonably fast at relatively low substrate temperatures of 350°C or above. Unlike monosilane, photo-induced effects in the gas phase following light absorption were negligible in deposition processes, and only the pyrolytic process taking place at the laser-heated substrate was important. Some of the physical properties of deposited films were described.

Takehiko Iwanaga; Mitsugu Hanabusa

1984-01-01T23:59:59.000Z

214

Theory of semicollisional drift-interchange modes in cylindrical plasmas  

SciTech Connect

Resistive interchange instabilities in cylindrical plasmas are studied, including the effects of electron diamagnetic drift, perpendicular resistivity, and plasma compression. The analyses are pertinent to the semicollisional regime where the effective ion gyro-radius is larger than the resistive layer width. Both analytical and numerical results show that the modes can be completely stabilized by the perpendicular plasma transport. Ion sound effects, meanwhile, are found to be negligible in the semicollisional regime.

Hahm, T.S.; Chen, L.

1985-01-01T23:59:59.000Z

215

Formation of Cooper pairs as a consequence of exchange interaction  

E-Print Network (OSTI)

Pairing of two electrons with antiparallel spins may lead to energy minimization of each of the paired electrons. Thus the exchange interaction causes a bond between two valence electrons in a crystal. This can be proved analyzing the energy of each valence electron in the field of the one-valent metallic crystal on assumption that all other kinds of magnetic spin ordering in the crystal are negligible.

Dolgopolov, Stanislav

2015-01-01T23:59:59.000Z

216

The effect of petroleum operations on the phytoplankton ecology of the Louisiana coastal waters  

E-Print Network (OSTI)

and salinity at each of two stations designated the Platform and Control stations. Water samples were also collected for the enumeration and identification of phytoplankton populations in the study area, The drilling operations have apparently had a... negligible effect on the phytoplankton communities of this region. The phytoplankton standing crop and production were equally high at both the Platform and Control stations. Likewise, when compared to other productive regions in the Gulf of Mexico...

Fucik, K

2012-06-07T23:59:59.000Z

217

Thermal Management of Structured Adsorbents in CO2 Capture Processes  

Science Journals Connector (OSTI)

In our previous study,(8) we presented a new methodology to find the optimal adsorbent structure and showed that for dilute systems, parallel channel adsorbents in the form of laminate structures exhibit substantially better performance than other structures, but for the sake of computational simplicity we confined our study to the case of isothermal operation only. ... Heat capacities of bulk and adsorbed CO2 are assumed negligible. ...

Fateme Rezaei; Mattias Grahn

2012-02-24T23:59:59.000Z

218

The benchmark of gutzwiller density functional theory in hydrogen systems  

SciTech Connect

We propose an approximate form of the exchange-correlation energy functional for the Gutzwiller density functional theory. It satisfies certain physical constraints in both weak and strong electron correlation limits. We benchmark the Gutzwiller density functional approximation in the hydrogen systems, where the static correlation error is shown to be negligible. The good transferability is demonstrated by applications to the hydrogen molecule and some crystal structures.

Yao, Y.; Wang, Cai-Zhuang; Ho, Kai-Ming

2012-02-23T23:59:59.000Z

219

Effects of Plug-In Hybrid Electric Vehicles on Ozone Concentrations in Colorado  

Science Journals Connector (OSTI)

Effects of Plug-In Hybrid Electric Vehicles on Ozone Concentrations in Colorado ... Changes in PM10 and PM2.5 concentrations in Colorado (and most areas of the western U.S. outside California) were negligible. ... The biogenic, area, and mobile source inventories were provided by the National Park Service (17) based on an updated version of the Western Regional Air Partnership (WRAP) inventories from 2002 used for the Rocky Mountain Atmospheric Nitrogen and Sulfur (RoMANS) study. ...

Gregory L. Brinkman; Paul Denholm; Michael P. Hannigan; Jana B. Milford

2010-07-15T23:59:59.000Z

220

HIGH CHARGE EFFECTS IN SILICON DRIFT DETECTORS WITH LATERAL CONFINEMENT OF ELECTRONS.  

SciTech Connect

A new drift detector prototype which provides suppression of the lateral diffusion of electrons has been tested as a function of the signal charge up to high charge levels, when electrostatic repulsion is not negligible. The lateral diffusion of the electron cloud has been measured for injected charges up to 2 {center_dot} 10{sup 5} electrons. The maximum number of electrons for which the suppression of the lateral spread is effective is obtained.

CASTOLDI,A.; REHAK,P.

1995-10-21T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" 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

PROPRIETARY MATERIAL. 2011 The McGraw-Hill Companies, Inc. Limited distribution permitted only to teachers and educators for course preparation. If you are a student using this Manual, you are using it without permission.  

E-Print Network (OSTI)

of the steam extracted from the turbine at a relatively high pressure is used for process heating. The netPa 0.6 MPa 4 5 3 Qout · Qin · Qproces · 6 8 1 5 Turbine Boiler Condenser Process heater P IP II 4 2 3 7 operating conditions exist. 2 Kinetic and potential energy changes are negligible. Analysis From the steam

Bahrami, Majid

222

Comparison of radiological dose pathways for tank farm accidents  

SciTech Connect

This calculation note documents an evaluation of the doses from submersion and ground shine due to a release of tank farm radioactive materials, and a comparison of these doses to the doses from inhalation of the materials. The submersion and ground shine doses are insignificant compared to the inhalation doses. The doses from resuspension are also shown to be negligible for the tank farm analysis conditions.

Van Keuren, J.C.

1996-10-30T23:59:59.000Z

223

Nonproliferation, Nuclear Security, and the Insider Threat  

SciTech Connect

Insider threat concept is evolving and getting more attention: (1) Domestically, internationally and in foreign countries, (2) At the government, academia, and industry levels, and (3) Public awareness and concerns are also growing. Negligence can be an insider's action. Technology advancements provide more opportunities, new tools for the insider. Our understanding of the insider is shaped by our cultural, social and ethnic perceptions and traditions. They also can limit our recognition of the issues and response actions.

Balatsky, Galya I. [Los Alamos National Laboratory; Duggan, Ruth [SNL

2012-07-12T23:59:59.000Z

224

The antiquity of oxygenic photosynthesis: Evidence from stromatolites in sulphate-deficient Archaean lakes  

SciTech Connect

The Tumbiana Formation, about 2,700 million years old, was largely deposited in ephemeral saline lakes, as judged by the unusual evaporite paragenesis of carbonate and halite with no sulfate. Stromatolites of diverse morphology occur in the lacustrine sediments, some with palimpsest fabrics after erect filaments. These stromatolites were probably accreted by phototropic microbes that, from their habitat in shallow isolated basins with negligible sulfate concentrations, almost certainly metabolized by oxygenic photosynthesis.

Buick, R. (Harvard Univ., Cambridge, MA (United States))

1992-01-03T23:59:59.000Z

225

"Dark energy" as conformal dynamics of space  

E-Print Network (OSTI)

The exact solution for dynamic of conform-flat space homogeneous since dynamic equation is given. Conform mode of space metric changing in Global time theory has negative energy density. Swap of energy to this mode from another ones lead to increasing of Universe homogeneity although probability of this swap from local objects is negligibly small. Conform mode is corresponding to "dark energy" in observation astronomy.

D. Burlankov

2006-10-23T23:59:59.000Z

226

High-frequency Stark-effect measurements in emission spectroscopy  

Science Journals Connector (OSTI)

The applicability of the high-frequency Stark effect in the diagnostics of turbulent plasmas is demonstrated by measurements of He I line profiles (4D1-2P1) in a turbulent linear discharge. The existence of electron plasma waves with field strengths of 6-9 kV/cm is confirmed spectroscopically. Competing effects—e.g., the emission of molecular lines—are discussed in detail and are shown to be negligible under our experimental conditions.

N. J. Wiegart

1983-04-01T23:59:59.000Z

227

Bioaccumulation of Perfluorochemicals in Pacific Oyster under Different Salinity Gradients  

Science Journals Connector (OSTI)

Bioaccumulation of Perfluorochemicals in Pacific Oyster under Different Salinity Gradients ... Where Kdsw and Kd0 represent the distribution coefficients in saline and pure water, respectively, S is salinity and kads is a constant for sorption salting constant (?kads = 0.0352?). ... Based on the fact that biotransformation of PFCs is negligible (35), the faster depuration rate for PFCs at higher salinities is attributable to increases in the uptake volume of water associated with increased salinity. ...

Junho Jeon; Kurunthachalam Kannan; Han Kyu Lim; Hyo Bang Moon; Jin Sung Ra; Sang Don Kim

2010-03-15T23:59:59.000Z

228

Self-pumping impurity control  

DOE Patents (OSTI)

Apparatus for removing the helium ash from a fusion reactor having a D-T plasma comprises a helium trapping site within the reactor plasma confinement device, said trapping site being formed of a trapping material having negligible helium solubility and relatively high hydrogen solubility; and means for depositing said trapping material on said site at a rate sufficient to prevent saturation of helium trapping.

Brooks, Jeffrey N. (Darien, IL); Mattas, Richard F. (Downers Grove, IL)

1991-01-01T23:59:59.000Z

229

Neutron Scattering by an Anharmonic Crystal  

Science Journals Connector (OSTI)

Baym's treatment of coherent scattering of slow neutrons by a crystal is examined and modified to include effects due to the cubic-anharmonic term in the lattice potential to second order in the coupling constant. Corrections to the Debye-Waller factor and to the "one-phonon" resonance peak are obtained, which appear to be negligible (?0.01%) for the case of a Bravais lattice and certainly <1% in other cases.

B. V. Thompson

1963-08-15T23:59:59.000Z

230

Operation of water supply reservoirs for flood mitigation : hydrologic and institutional considerations  

E-Print Network (OSTI)

OF TABLES TABLE 1. Existing Reservoirs in the Navasota River Basin Page TABLE 2. TABLE 3. TABLE 4. Reservoir Uses in the Navasots River Basin Subbasin Areas Precipitation Gaging Stations ? Recording 10 12 TABLE 5. Precipitation Gaging Stations... at Easterly/Bryan Gages (hr) . 50 TABLE 29. Theory of Negligence Cases TABLE 30. Dam operator Bights Used as Defense TABLE 31. Act of God Defense 56 59 60 LIST OF FIGURES FIGURE 1, Navasota River Watershed FIGURE 2. Subbasins of the Navasota River...

Craney, Patrick Wayne

2012-06-07T23:59:59.000Z

231

Osmotic pressure measurements of ovalbumin and lysozyme mixtures  

E-Print Network (OSTI)

, the experimental tech- nique has become more practical. For these reasons, osmometry was used to study the interaction of ovalbumin and lysozyme in cacodylate buffer solutions (pH 5. 80, u = 0. 02) at 30 and 37'C. Osmotic pressure experiments performed... separately on ovalbumin and lysozyme in cacodylate buffer indicated that the self-associations of either reactant are negligible. Both solutions exhibited nonideal behavior at each temperature. In order to study the mixed interaction, stock solutions were...

McCarty, Bradley Wayne

2012-06-07T23:59:59.000Z

232

Study Shows Active Power Controls from Wind May Increase Revenues and Improve System Reliability  

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

The DOE Wind Program and the National Renewable Energy Laboratory recently published a study conducted in collaboration with the Electric Power Research Institute and the University of Colorado. Researchers examined how the contribution of wind power providing active power controls could benefit the total power system economics, increase revenue streams, and improve the reliability and security of the nation’s power system, all while having negligible impacts on the turbine and its components.

233

1) Laura Secord was making solid spherical cannon balls of radius R for General Brock during the war of 1812. She placed three of them on her smooth level floor. Each was in contact with  

E-Print Network (OSTI)

of the above. 8 , f i ~ e n d c M Corn/- Cam, 45a4-3p k c d -* #12;2) A rigid metal pipe packed with recycled as point masses, all collisions are elastic, and air resistance is negligible. Find the ratio hllhz, where uses identical bulbs connectedto a 12 V battery as shown, list the bulbs in order of increasing

Boutaba, Raouf

234

Momentum and heat fluxes in a turbulent air flow over a wet, smooth boundary  

E-Print Network (OSTI)

are negligible in directions other than those normal to the boundary surface. Such equa? tions were first employed by Boussinesq (5* 6). For turbulent flow, he suggested the equatiisns, ? IS ^7/ (momentum flux)/ - U and ^ =. Kh (beat flux) where KM and c... of a pre? cision potentiometer. Continuous, uniform water supply to the test surface was achieved by a distilled water supply system composed of glass bottles and copper tubing arranged to supply water at any required rate without attention from...

Rice, Warren

2013-10-04T23:59:59.000Z

235

Measurement of electron capture and loss cross section for 41.67 MeV ??Br ions in H?  

E-Print Network (OSTI)

generated with averages of the estimates derived from the various methods of ana- lysis. Br+ was the incoming charge state. . . . . . . . . . . . 66 18 Comparison of the experimental data (denoted by the dots) with the pk curves generated from the cross... curves generated from the cross section values obtained after making alterations in the cross section estimates. Loss of three or more electrons was assumed negligible. Br+ was the in- coming charge state. 68 20 Comparison of the experimental data...

Burns, James Martin

1967-01-01T23:59:59.000Z

236

Relaying an optical wavefront  

DOE Patents (OSTI)

A wavefront rely devices samples an incoming optical wavefront at different locations, optically relays the samples while maintaining the relative position of the samples and the relative phase between the samples. The wavefront is reconstructed due to interference of the samples. Devices can be designed for many different wavelengths, including for example the ultraviolet, visible, infrared and even longer wavelengths such as millimeter waves. In one application, the device function as a telescope but with negligible length.

Sweatt, William C. (Albuquerque, NM); Vawter, G. Allen (Corrales, NM)

2007-03-06T23:59:59.000Z

237

Formation of Cooper pairs as a consequence of exchange interaction  

E-Print Network (OSTI)

Pairing of two electrons with antiparallel spins may lead to energy minimization of each of the paired electrons. Thus the exchange interaction causes a bond between two valence electrons in a crystal. This can be proved analyzing the energy of each valence electron in the field of the one-valent metallic crystal on assumption that all other kinds of magnetic spin ordering in the crystal are negligible.

Stanislav Dolgopolov

2015-01-15T23:59:59.000Z

238

Dark energy perturbations and a possible solution to the coincidence problem  

E-Print Network (OSTI)

We analyze some generic properties of the dark energy (DE) perturbations, in the case of a self-conserved DE fluid. We also apply a simple test (the "F-test") to compare a model to the data on large scale structure (LSS) under the assumption of negligible DE perturbations. We exemplify our discussions by means of the LXCDM model, showing that it provides a viable solution to the cosmological coincidence problem.

Javier Grande; Ana Pelinson; Joan Sola

2009-05-04T23:59:59.000Z

239

Oil production triggered by crisis stays on stream throughout '91  

SciTech Connect

This paper reports on worldwide production of crude oil and lease condensate that declined slightly in 1991 due to sagging demand. With Kuwait and Iraq still producing negligible volumes, there was little spare production capacity. But the replacement capacity pressed into use during the Persian Gulf crisis proved its durability by remaining on stream throughout the year. Reserves declined marginally. Most reserves changes reflected estimates by governments of some producing countries.

Not Available

1991-12-30T23:59:59.000Z

240

arXiv:0802.2965v1[hep-ex]21Feb2008 Single Top Quark Production at the Fermilab Tevatron Collider  

E-Print Network (OSTI)

arXiv:0802.2965v1[hep-ex]21Feb2008 Single Top Quark Production at the Fermilab Tevatron Collider at the Fermilab Tevatron Collider are s-channel, which involve the exchange of a time-like W boson, and t be created in association with an an on-shell W boson, but this process is negligible at the Fermilab

California at Santa Cruz, University of

Note: This page contains sample records for the topic "negligible negligible negligible" 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

Potential for Reduction of Exhaust Emissions in a Common-Rail Direct-Injection Diesel Engine by Fueling with Fischer–Tropsch Diesel Fuel Synthesized from Coal  

Science Journals Connector (OSTI)

In the constant speed/varying load test modes, the use of CFT also resulted in a general reduction of regulated emissions. ... (5, 6) Moreover, FT diesel fuels can be used in contemporary diesel engines without any modification and with a negligible or weak improvement of engine efficiency. ... Liu, Z.; Shi, S.; Li, Y.Coal liquefaction technologies—Development in China and challenges in chemical reaction engineering Chem. ...

Chonglin Song; Guohong Gong; Jinou Song; Gang Lv; Xiaofeng Cao; Lidong Liu; Yiqiang Pei

2011-11-28T23:59:59.000Z

242

Quasi-stationary circuit relationships from electromagnetic theory with special emphasis on equivalence  

E-Print Network (OSTI)

, it is easy to show that If X and S are calculated by use of (33) and (34), they are called "retarded potentials? . 12 . The Concept of Applied Electromotive Force In order to determine the electric intensity E at any point in an electromagnetic field... may be negligible. Also a nearby field may be elimi? nated effectively by shielding. Thus it follows that all current and charge distributions may be divided into groups where each system is effectively shielded from effecting the others...

Gandy, Woodrow Wheeler

2013-10-04T23:59:59.000Z

243

Vrme-och strmningsteknik Thermal and Flow Engineering Processteknikens grunder (PTG) 2011  

E-Print Network (OSTI)

, with density (700 + 10·a) kg/m3 , and heating value (energy content) 44000 kJ/kg. Assuming that problems nuclear fission can release 6.73·1010 kJ heat/kg U-235. Calculate how many years the car could run on 0 the oil can exchange heat (with negligible heat transfer resistance). Via an electric heater, an amount Q

Zevenhoven, Ron

244

A simplified procedure for estimation of mixture permeances from unary permeation data  

SciTech Connect

Using the Maxwell–Stefan (M–S) diffusion equations as a basis, we derive simple analytic expression for the estimation of component permeances of mixtures across micro- and mesoporous membranes on the basis of unary permeation data. The analytic procedure uses two simplifying assumptions: (1) downstream pressures are negligibly small in comparison to upstream pressures, and (2) adsorption equilibrium within the pores can be described by Henry law coefficients. Two limiting scenarios are considered in estimating the M–S exchange coefficients, Ð{sub ij}: (1) correlations negligible, and (2) correlations dominant. In the correlations negligible scenario, the permeances of each component in the mixture equal that of the corresponding pure components. For the correlations dominant scenario, the permeances in the mixture are significantly different from the pure component values; the differences being dictated not only by mobilities of the species within the pores, but also by the adsorption equilibrium. The results of this study underlines the strong influence of diffusional correlations on the mixture permeances and permeation selectivities.

Krishna, Rajamani; van Baten, Jasper M

2011-01-01T23:59:59.000Z

245

Environmental Effects for Gravitational-wave Astrophysics  

E-Print Network (OSTI)

The upcoming detection of gravitational waves by terrestrial interferometers will usher in the era of gravitational-wave astronomy. This will be particularly true when space-based detectors will come of age and measure the mass and spin of massive black holes with exquisite precision and up to very high redshifts, thus allowing for better understanding of the symbiotic evolution of black holes with galaxies, and for high-precision tests of General Relativity in strong-field, highly-dynamical regimes. Such ambitious goals require that astrophysical environmental pollution of gravitational-wave signals be constrained to negligible levels, so that neither detection nor estimation of the source parameters are significantly affected. Here, we consider the main sources for space-based detectors -the inspiral, merger and ringdown of massive black-hole binaries and extreme mass-ratio inspirals- and account for various effects on their gravitational waveforms, including electromagnetic fields, cosmological evolution, accretion disks, dark matter, ``firewalls'' and possible deviations from General Relativity. We discover that the black-hole quasinormal modes are sharply different in the presence of matter than in vacuum, but the ringdown signal observed by interferometers is typically unaffected. The effect of accretion disks and dark matter depends critically on their geometry and density profile, but is negligible for most sources, except for very few special extreme mass-ratio inspirals. Electromagnetic fields and cosmological effects are always negligible. We finally explore the implications of our findings for proposed tests of General Relativity with gravitational waves, and conclude that environmental effects will not prevent the development of precision gravitational-wave astronomy.

Enrico Barausse; Vitor Cardoso; Paolo Pani

2014-04-28T23:59:59.000Z

246

EAC Recommendations for DOE Action on a Strategic Portable Generation Reserve - October 17, 2012  

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

Richard Cowart, Chair DATE: October 17, 2012 RE: Recommendation on Strategic Portable Generation Reserve _________________________________________________________________________ The purpose of this memorandum is to convey to the U.S. Department of Energy (DOE) the Electricity Advisory Committee (EAC) recommendation that DOE not pursue a Strategic Portable Generation Reserve ("the Reserve") and to summarize the conclusions leading to this recommendation. DOE's establishment of the Reserve would designate it as the national backstop power source for emergencies, with associated fuel delivery responsibility, and position DOE as an owner of critical electric infrastructure. This DOE initiative would require significant effort and provide negligible improvement to electric service reliability.

247

Interacting particle systems at the edge of multilevel Dyson Brownian motions  

E-Print Network (OSTI)

We study the joint asymptotic behavior of spacings between particles at the edge of multilevel Dyson Brownian motions, when the number of levels tends to infinity. Despite the global interactions between particles in multilevel Dyson Brownian motions, we observe a decoupling phenomenon in the limit: the global interactions become negligible and only the local interactions remain. The resulting limiting objects are interacting particle systems which can be described as Brownian versions of certain totally asymmetric exclusion processes. This is the first appearance of a particle system with local interactions in the context of general $\\beta$ random matrix models.

Vadim Gorin; Mykhaylo Shkolnikov

2014-09-06T23:59:59.000Z

248

Results of First Outdoor Comparison Between Absolute Cavity Pyrgeometer (ACP) and Infrared Integrating Sphere (IRIS) Radiometer at PMOD (Presentation)  

SciTech Connect

The ACP and IRIS are developed to establish a world reference for calibrating pyrgeometers with traceability to SI units. The two radiometers are unwindowed with negligible spectral dependence, and traceable to SI units through the temperature scale (ITS-90). The first outdoor comparison between the two designs was held from January 28 to February 8, 2013 at the Physikalisch-Metorologisches Observatorium Davos (PMOD). The difference between the irradiance measured by ACP and that of IRIS was within 1 W/m2. A difference of 5 W/m2 was observed between the irradiance measured by ACP&IRIS and that of the interim World Infrared Standard Group (WISG).

Reda, I.; Grobner, J.; Wacker, S.; Stoffel, T.

2013-03-01T23:59:59.000Z

249

Solving radiation problems at particle accelerators  

SciTech Connect

At high-intensity high-energy particle accelerators, consequences of a beam-induced radiation impact on machine and detector components, people, environment and complex performance can range from negligible to severe. The specifics, general approach and tools used at such machines for radiation analysis are described. In particular, the world leader Fermilab accelerator complex is considered, with its fixed target and collider experiments, as well as new challenging projects such as LHC, VLHC, muon collider and neutrino factory. The emphasis is on mitigation of deleterious beam-induced radiation effects and on the key role of effective computer simulations.

Nikolai V. Mokhov

2001-12-11T23:59:59.000Z

250

Tensile strain mapping in flat germanium membranes  

SciTech Connect

Scanning X-ray micro-diffraction has been used as a non-destructive probe of the local crystalline quality of a thin suspended germanium (Ge) membrane. A series of reciprocal space maps were obtained with ?4 ?m spatial resolution, from which detailed information on the strain distribution, thickness, and crystalline tilt of the membrane was obtained. We are able to detect a systematic strain variation across the membranes, but show that this is negligible in the context of using the membranes as platforms for further growth. In addition, we show evidence that the interface and surface quality is improved by suspending the Ge.

Rhead, S. D., E-mail: S.Rhead@warwick.ac.uk; Halpin, J. E.; Myronov, M.; Patchett, D. H.; Allred, P. S.; Wilson, N. R.; Leadley, D. R. [Department of Physics, University of Warwick, Coventry, CV4 7AL (United Kingdom); Shah, V. A. [Department of Physics, University of Warwick, Coventry, CV4 7AL (United Kingdom); Department of Engineering, University of Warwick, Coventry, CV4 7AL (United Kingdom); Kachkanov, V.; Dolbnya, I. P. [Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE (United Kingdom); Reparaz, J. S. [ICN2 - Institut Catala de Nanociencia i Nanotecnologia, Campus UAB, 08193 Bellaterra (Barcelona) (Spain); Sotomayor Torres, C. M. [ICN2 - Institut Catala de Nanociencia i Nanotecnologia, Campus UAB, 08193 Bellaterra (Barcelona) (Spain)

2014-04-28T23:59:59.000Z

251

Steady-State Screening-Photovoltaic Spatial Solitons in the  

Science Journals Connector (OSTI)

The theory of the screening-photovoltaic solitons is improved in biased photorefractive-photovoltaic crystals. When the photovoltaic effect is negligible, the screening-photovoltaic solitons are the screening ones, and their space-charge field is the space-charge field of the screening solitons. If the external field is absent, the screening-photovoltaic solitons are the photovoltaic ones on the open- and closed-circuit conditions, and their space-charge field is of the photovoltaic solitons. We also show theoretically that the screening and the photovoltaic solitons on the open- and closed-circuit conditions may be studies together as the screening-photovoltaic solitons.

Lu Ke-Qing; Zhang Yan-Peng; Tang Tian-Tong; Lu Zhi-Xian; Liu Lin

2001-01-01T23:59:59.000Z

252

Influence of the cosmological constant on gravitational lensing in small systems  

SciTech Connect

The cosmological constant {lambda} affects gravitational lensing phenomena. The contribution of {lambda} to the observable angular positions of multiple images and to their amplification and time delay is here computed through a study of the weak deflection limit of the equations of motion in the Schwarzschild-de Sitter metric. Because of {lambda} the unresolved images are slightly demagnified, the radius of the Einstein ring decreases, and the time delay increases. The effect is however negligible for near lenses. In the case of a null cosmological constant, we provide some updated results on lensing by a Schwarzschild black hole.

Sereno, Mauro [Institut fuer Theoretische Physik, Universitaet Zuerich, Winterthurerstrasse 190, CH-8057 Zurich (Switzerland)

2008-02-15T23:59:59.000Z

253

Influence of the cosmological constant on gravitational lensing in small systems  

Science Journals Connector (OSTI)

The cosmological constant ? affects gravitational lensing phenomena. The contribution of ? to the observable angular positions of multiple images and to their amplification and time delay is here computed through a study of the weak deflection limit of the equations of motion in the Schwarzschild–de Sitter metric. Because of ? the unresolved images are slightly demagnified, the radius of the Einstein ring decreases, and the time delay increases. The effect is however negligible for near lenses. In the case of a null cosmological constant, we provide some updated results on lensing by a Schwarzschild black hole.

Mauro Sereno

2008-02-15T23:59:59.000Z

254

Nature of Subproton Scale Turbulence in the Solar Wind  

Science Journals Connector (OSTI)

The nature of subproton scale fluctuations in the solar wind is an open question, partly because two similar types of electromagnetic turbulence can occur: kinetic Alfvén turbulence and whistler turbulence. These two possibilities, however, have one key qualitative difference: whistler turbulence, unlike kinetic Alfvén turbulence, has negligible power in density fluctuations. In this Letter, we present new observational data, as well as analytical and numerical results, to investigate this difference. These results show, for the first time, that the fluctuations well below the proton scale are predominantly kinetic Alfvén turbulence, and, if present at all, the whistler fluctuations make up only a small fraction of the total energy.

C. H. K. Chen; S. Boldyrev; Q. Xia; J. C. Perez

2013-05-31T23:59:59.000Z

255

Open Inflation, the Four Form and the Cosmological Constant  

E-Print Network (OSTI)

Fundamental theories of quantum gravity such as supergravity include a four form field strength which contributes to the cosmological constant. The inclusion of such a field into our theory of open inflation (hep-th/9802030) allows an anthropic solution to the cosmological constant problem in which the cosmological constant gives a small but non-negligible contribution to the density of today's universe. We include a discussion of the role of the singularity in our solution and a reply to Vilenkin's recent criticism (hep-th/9803084).

Neil Turok; S. W. Hawking

1998-03-19T23:59:59.000Z

256

Radiological Characterization around the Afsin-Elbistan Coal-Fired Power Plant in Turkey  

Science Journals Connector (OSTI)

Radiological Characterization around the Afsin-Elbistan Coal-Fired Power Plant in Turkey ... The environmental effect of natural radionuclides caused by coal-fired power plants was considered to be negligible because the Raeq values of the measured samples are generally lower than the limit value of 370 Bq·kg?1, equivalent to a gamma dose of 1.5 mSv·y?1. ... Although significant variations were not observed with distance and direction, these results may be affected by several factors, such as soil formation, weather conditions (wind, rain, etc.) and human activity. ...

Ugur Cevik; Nevzat Damla; Bahad?r Koz; Selim Kaya

2007-11-30T23:59:59.000Z

257

A Materials-Based Mitigation Strategy for SU/SD in PEM Fuel Cells: Properties and Performance-Specific Testing of IrRu OER Catalysts.  

SciTech Connect

Catalysts that enable proton exchange membrane fuel cells to weather the damaging conditions experienced during transient periods of fuel starvation have been developed. The addition of minute amounts of iridium and ruthenium to the cathode enhances the oxygen evolution reaction (OER) during start-up/shutdown events, thus lowering the peak cell voltage closer to the onset of water oxidation. The catalyst loadings ranged from 1 to 10 g/cm2, but showed surprisingly high activity and durability. At such low loadings, it is possible to fully integrate the OER catalysts with negligible interference on fuel cell performance and a marginal increase in catalyst cost.

Atanasoski, Radoslav [3M Industrial Mineral Products; Cullen, David A [ORNL; Vernstrom, George [3M Industrial Mineral Products; Haugen, Gregory [3M Industrial Mineral Products; Atanasoska, Liliana [3M Industrial Mineral Products

2013-01-01T23:59:59.000Z

258

ANALYSIS OF HARRELL MONOSODIUM TITANATE LOT #s 46000606120, 46000722120, AND 46000808120  

SciTech Connect

Monosodium titanate (MST) for use in the Actinide Removal Process (ARP) must be qualified and verified in advance. A single qualification sample for each batch of material is sent to SRNL for analysis, as well as a statistical sampling of verification samples. The Harrell Industries Lot #s 46000706120, 46000722120, and 460008081120 qualification and verification samples met each of the selected specification requirements that were tested with the exception of a few pails being marginally below the lower weight percent solids limit. These deviations from the specifications are viewed as negligible since the corresponding density of the slurries indicates no appreciable shortage of MST solids. Therefore, SRNL recommends acceptance and use of these pails.

Taylor-Pashow, K.

2012-10-08T23:59:59.000Z

259

Modelling of trickle-bed reactors at high temperatures and pressures  

E-Print Network (OSTI)

that it is very difficult to reproduce the same flow pattern from bed to bed, Lee and Smith present a criterion for negligible inter- and intraphase transport effects. For exothermic reactions, this criterion is (RL/k C )(p /s ) & P/(1-1)) b L L p p (22.... This is valid for reactions such as hydrodesulfurization and hydrodenitrogenation, which are only slightly exothermic. Most models assume a non-volatile liquid phase. Since the models reviewed were tested against reaction systems at ambient conditions...

Collins, George Michael

1983-01-01T23:59:59.000Z

260

Electronic Instability in a Zero-Gap Semiconductor: The Charge-Density Wave in (TaSe4)2I  

We report a comprehensive study of the paradigmatic quasi-1D compound (TaSe4)2I performed by means of angle-resolved photoemission spectroscopy (ARPES) and first-principles electronic structure calculations. We find it to be a zero-gap semiconductor in the nondistorted structure, with non-negligible interchain coupling. Theory and experiment support a Peierls-like scenario for the charge-density wave formation below TCDW=263??K, where the incommensurability is a direct consequence of the finite interchain coupling. The formation of small polarons, strongly suggested by the ARPES data, explains the puzzling semiconductor-to-semiconductor transition observed in transport at TCDW.

Tournier-Colletta, C.; Moreschini, L.; Autès, G.; Moser, S.; Crepaldi, A.; Berger, H.; Walter, A. L.; Kim, K. S.; Bostwick, A.; Monceau, P.; Rotenberg, E.; Yazyev, O. V.; Grioni, M.

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" 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

Acceptor and donor production in Hg b1 s[subscript -x]Cd[subscript x]Te by neutron transmutation doping  

E-Print Network (OSTI)

remains constant during the irradiation, 4. The dopant or oduced i'rom the decay of the pr oduct isot. ope is stable, 5. The effect of bur nup of the product isotopes and the dopants is negligible. With these assumptions and approximations one has... amounts such as Te and Te, and with products arri tting gamma rays with approximately the same ener gy, theoretical methods wer e developed for deter mining acceptor and donor production levels in Hg& xCdxTe based on the simultaneous irradiation of a...

Seager, Kevin Douglas

1985-01-01T23:59:59.000Z

262

Theory of Coulomb-blockade oscillations in the conductance of a quantum dot  

Science Journals Connector (OSTI)

A linear-response theory is developed for resonant tunneling through a quantum dot of small capacitance, in the regime of thermally broadened resonances. The theory extends the classical theory of Coulomb-blockade oscillations by Kulik and Shekhter to the resonant-tunneling regime. Both the cases of negligible and strong inelastic scattering in the quantum dot are considered. Effects from the non-Fermi-Dirac distribution of electrons among the energy levels (occurring when kT is comparable to the level separation) are fully included. Explicit analytic results are obtained for the periodicity, amplitude, line shape, and activation energy of the conductance oscillations.

C. W. J. Beenakker

1991-07-15T23:59:59.000Z

263

Quantum Hacking: Experimental demonstration of time-shift attack against practical quantum key distribution systems  

E-Print Network (OSTI)

Quantum key distribution (QKD) systems can send signals over more than 100 km standard optical fiber and are widely believed to be secure. Here, we show experimentally for the first time a technologically feasible attack, namely the time-shift attack, against a commercial QKD system. Our result shows that, contrary to popular belief, an eavesdropper, Eve, has a non-negligible probability (~4%) to break the security of the system. Eve's success is due to the well-known detection efficiency loophole in the experimental testing of Bell inequalities. Therefore, the detection efficiency loophole plays a key role not only in fundamental physics, but also in technological applications such as QKD.

Yi Zhao; Chi-Hang Fred Fung; Bing Qi; Christine Chen; Hoi-Kwong Lo

2007-04-24T23:59:59.000Z

264

Bremsstrahlung emission modelling and application to fast electron physics  

SciTech Connect

Measurements of fast electron bremsstrahlung (FEB) using hard X-ray (HXR) cameras provide a unique diagnostic for the fast electron dynamics, with resolution in space, time and energy. A synthetic HXR diagnostic is developed to calculate the distribution function and FEB emission, such that experimental results can be directly compared with simulations. Using this comparison, the role of fast electron radial transport in radio-frequency current drive is investigated. For two cases studied in this paper, the HXR emission is consistent with negligible radial transport, although in one case this is in disagreement with the measured driven current.

Decker, J.; Peysson, Y.; Artaud, J.-F.; Basiuk, V.; Ekedahl, A.; Mazon, D. [CEA, IRFM, F-13108 Saint Paul lez Durance (France); Coda, S.; Gnesin, S.; Goniche, M. [CRPP, EPFL, CH-1015 Lausanne (Switzerland); Sharma, P. K. [IPR, Bhat, Gandhinagar - 382428 (India)

2011-12-23T23:59:59.000Z

265

Averaged equations for Josephson junction series arrays with LRC load  

E-Print Network (OSTI)

We derive the averaged equations describing a series array of Josephson junctions shunted by a parallel inductor-resistor-capacitor load. We assume that the junctions have negligable capacitance ($\\beta = 0$), and derive averaged equations which turn out to be completely tractable: in particular the stability of both in-phase and splay states depends on a single parameter, $\\del$. We find an explicit expression for $\\delta$ in terms of the load parameters and the bias current. We recover (and refine) a common claim found in the technical literature, that the in-phase state is stable for inductive loads and unstable for capacitive loads.

Kurt Wiesenfeld; James W. Swift

1994-08-26T23:59:59.000Z

266

Heat Transfer across the Interface between Nanoscale Solids and Gas  

Science Journals Connector (OSTI)

(4-7) Relative to heat transferred via solid–solid interfaces, heat dissipation from the active device region to the gas environment is usually negligible. ... Long VO2 NWs were cantilevered from a substrate and were locally heated using a focused laser, allowing the laser-heating induced phase transition and the resultant domain structures along the NW to be optically imaged. ... By imaging the laser-heating induced metal–insulator phase transition along single, free-standing VO2 NWs, we determined the heat transfer coefficient between the NW and the gas environment over a wide range of pressure and down to the submicrometer scale. ...

Chun Cheng; Wen Fan; Jinbo Cao; Sang-Gil Ryu; Jie Ji; Costas P. Grigoropoulos; Junqiao Wu

2011-11-09T23:59:59.000Z

267

Process for forming silicon carbide films and microcomponents  

DOE Patents (OSTI)

Silicon carbide films and microcomponents are grown on silicon substrates at surface temperatures between 900 K and 1700 K via C.sub.60 precursors in a hydrogen-free environment. Selective crystalline silicon carbide growth can be achieved on patterned silicon-silicon oxide samples. Patterned SiC films are produced by making use of the high reaction probability of C.sub.60 with silicon at surface temperatures greater than 900 K and the negligible reaction probability for C.sub.60 on silicon dioxide at surface temperatures less than 1250 K.

Hamza, Alex V. (Livermore, CA); Balooch, Mehdi (Berkeley, CA); Moalem, Mehran (Berkeley, CA)

1999-01-01T23:59:59.000Z

268

Quantum pumping in graphene  

Science Journals Connector (OSTI)

We show that graphene-based quantum pumps can tap into evanescent modes, which penetrate deeply into the device as a consequence of Klein tunneling. The evanescent modes dominate pumping at the Dirac point, and give rise to a universal response under weak driving for short and wide pumps, in close analogy to their role in the minimal conductivity in ballistic transport. In contrast, evanescent modes contribute negligibly to normal pumps. Our findings add an incentive for the exploration of graphene-based nanoelectronic devices.

E. Prada; P. San-Jose; H. Schomerus

2009-12-10T23:59:59.000Z

269

Doping suppression and mobility enhancement of graphene transistors fabricated using an adhesion promoting dry transfer process  

SciTech Connect

We present the facile dry transfer of graphene synthesized via chemical vapor deposition on copper film to a functional device substrate. High quality uniform dry transfer of graphene to oxidized silicon substrate was achieved by exploiting the beneficial features of a poly(4-vinylphenol) adhesive layer involving a strong adhesion energy to graphene and negligible influence on the electronic and structural properties of graphene. The graphene field effect transistors (FETs) fabricated using the dry transfer process exhibit excellent electrical performance in terms of high FET mobility and low intrinsic doping level, which proves the feasibility of our approach in graphene-based nanoelectronics.

Cheol Shin, Woo; Hun Mun, Jeong; Yong Kim, Taek; Choi, Sung-Yool; Jin Cho, Byung, E-mail: bjcho@kaist.edu, E-mail: tskim1@kaist.ac.kr [Department of Electrical Engineering, Graphene Research Center, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Yoon, Taeshik; Kim, Taek-Soo, E-mail: bjcho@kaist.edu, E-mail: tskim1@kaist.ac.kr [Department of Mechanical Engineering, Graphene Research Center, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)] [Department of Mechanical Engineering, Graphene Research Center, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)

2013-12-09T23:59:59.000Z

270

Electronic band structure imaging of three layer twisted graphene on single crystal Cu(111)  

SciTech Connect

Few layer graphene (FLG) is grown on single crystal Cu(111) by Chemical Vapor Deposition, and the electronic valence band structure is imaged by Angle-Resolved Photo-Emission Spectroscopy. It is found that graphene essentially grows polycrystalline. Three nearly ideal Dirac cones are observed along the Cu ?{sup ¯}K{sup ¯} direction in k-space, attributed to the presence of ?4° twisted three layer graphene with negligible interlayer coupling. The number of layers and the stacking order are compatible with Raman data analysis demonstrating the complementarity of the two techniques for a more accurate characterization of FLG.

Marquez Velasco, J. [National Center for Scientific Research “Demokritos,” 15310 Athens (Greece) [National Center for Scientific Research “Demokritos,” 15310 Athens (Greece); Department of Physics, National Technical University of Athens, Athens (Greece); Kelaidis, N.; Xenogiannopoulou, E.; Tsoutsou, D.; Tsipas, P.; Speliotis, Th.; Pilatos, G.; Likodimos, V.; Falaras, P.; Dimoulas, A., E-mail: dimoulas@ims.demokritos.gr [National Center for Scientific Research “Demokritos,” 15310 Athens (Greece); Raptis, Y. S. [Department of Physics, National Technical University of Athens, Athens (Greece)] [Department of Physics, National Technical University of Athens, Athens (Greece)

2013-11-18T23:59:59.000Z

271

On the interplay between allowed Gamow-Teller and Isovector Spin Monopole (IVSM) excitations  

SciTech Connect

The excitation of Gamow-Teller (GT) and Isovector Spin Monopole (IVSM) modes in {sup 116}In by (p,n) and (n,p)) charge-exchange reactions is studied within the framework of the Quasiparticle Random-phase Approximation. It is shown that the admixture of the IVSM and Gamow-Teller (GT) excitations is negligible, and that the contribution to the strength above 20 MeV excitation energy, in {sup 116}In, is, most likely, due to the IVSM ({sigma}r{sup 2}{tau}{sup {+-}}) mode.

Bes, D. R. [Dept of Physics. Lab.Tandar, CAC-CNEA. Avda Gral Paz 1499, 1650 Gral San Martin (Argentina); Civitarese, O. [Dept of Physics, University of La Plata, c.c.67 1900, La Plata (Argentina); Suhonen, J. [Dept of Physics, University of Jyvaeskylae, P.O. Box 35, FI-40014, Jyvaeskylae (Finland)

2011-12-16T23:59:59.000Z

272

Effect of the reactor antineutrino anomaly on the first Double-Chooz results  

Science Journals Connector (OSTI)

We investigate the possible effects of short-baseline ?¯e disappearance implied by the reactor antineutrino anomaly on the Double-Chooz determination of ?13 through the normalization of the initial antineutrino flux with the Bugey-4 measurement. We show that the effects are negligible and the value of ?13 obtained by the Double-Chooz collaboration is accurate only if ?m412?3??eV2. For smaller values of ?m412 the short-baseline oscillations are not fully averaged at Bugey-4 and the uncertainties due to the reactor antineutrino anomaly can be of the same order of magnitude of the intrinsic Double-Chooz uncertainties.

Carlo Giunti and Marco Laveder

2012-02-08T23:59:59.000Z

273

Bimodal Island Size Distribution in Heteroepitaxial Growth  

Science Journals Connector (OSTI)

A bimodal size distribution of two-dimensional islands is inferred during interface formation in heteroepitaxial growth of bismuth ferrite on (001) oriented SrTiO3 by sputter deposition. Features observed by in situ x-ray scattering are explained by a model where coalescence of islands determines the growth kinetics with negligible surface diffusion on SrTiO3. Small clusters maintain a compact shape as they coalesce, while clusters beyond a critical size impinge to form large irregular connected islands and a population of smaller clusters forms in the spaces between the larger ones.

P.?V. Chinta and R.?L. Headrick

2014-02-20T23:59:59.000Z

274

Echo of the Quantum Bounce  

E-Print Network (OSTI)

We identify a signature of quantum gravitational effects that survives from the early universe to the current era: Fluctuations of quantum fields as seen by comoving observers are significantly influenced by the history of the early universe. In particular we show how the existence (or not) of a quantum bounce leaves a trace in the background quantum noise that is not damped and would be non-negligible even nowadays. Furthermore, we estimate an upper bound for the typical energy and length scales where quantum effects are relevant. We discuss how this signature might be observed and therefore used to build falsifiability tests of quantum gravity theories.

Luis J. Garay; Mercedes Martin-Benito; Eduardo Martin-Martinez

2014-02-15T23:59:59.000Z

275

Photon emission from bare quark stars  

E-Print Network (OSTI)

We investigate the photon emission from the electrosphere of a quark star. It is shown that at temperatures T\\sim 0.1-1 MeV the dominating mechanism is the bremsstrahlung due to bending of electron trajectories in the mean Coulomb field of the electrosphere. The radiated energy for this mechanism is much larger than that for the Bethe-Heitler bremsstrahlung. The energy flux from the mean field bremsstrahlung exceeds the one from the tunnel e^{+}e^{-} pair creation as well. We demonstrate that the LPM suppression of the photon emission is negligible.

B. G. Zakharov

2010-08-16T23:59:59.000Z

276

Reduction of the Casimir force using aerogels  

Science Journals Connector (OSTI)

By using silicon oxide based aerogels we show numerically that the Casimir force can be reduced several orders of magnitude making its effect negligible in nanodevices. This decrease in the Casimir force is also present even when the aerogels are deposited on metallic substrates. To calculate the Casimir force we model the dielectric function of silicon oxide aerogels using an effective medium dielectric function such as the Clausius–Mossotti approximation. The results show that both the porosity of the aerogel and its thickness can be used as control parameters to reduce the magnitude of the Casimir force.

R. Esquivel-Sirvent

2007-01-01T23:59:59.000Z

277

Strange nuclear matter within Brueckner-Hartree-Fock Theory  

E-Print Network (OSTI)

We have developed a formalism for microscopic Brueckner-type calculations of dense nuclear matter that includes all types of baryon-baryon interactions and allows to treat any asymmetry on the fractions of the different species (n, p, $\\Lambda$, $\\Sigma^0$, $\\Sigma^+$, $\\Sigma^-$, $\\Xi^-$ and $\\Xi^0$). We present results for the different single-particle potentials focussing on situations that can be relevant in future microscopic studies of beta-stable neutron star matter with strangeness. We find the both the hyperon-nucleon and hyperon-hyperon interactions play a non-negligible role in determining the chemical potentials of the different species.

I. Vidana; A. Polls; A. Ramos; M. Hjorth-Jensen; V. G. J. Stoks

1999-09-09T23:59:59.000Z

278

Measurements of the T(t,2n)He4 Neutron Spectrum at Low Reactant Energies from Inertial Confinement Implosions  

Science Journals Connector (OSTI)

Measurements of the neutron spectrum from the T(t,2n)He4 (tt) reaction have been conducted using inertial confinement fusion implosions at the OMEGA laser facility. In these experiments, deuterium-tritium (DT) gas-filled capsules were imploded to study the tt reaction in thermonuclear plasmas at low reactant center-of-mass (c.m.) energies. In contrast to accelerator experiments at higher c.m. energies (above 100 keV), these results indicate a negligible n+He5 reaction channel at a c.m. energy of 23 keV.

D. T. Casey; J. A. Frenje; M. Gatu Johnson; M. J.-E. Manuel; N. Sinenian; A. B. Zylstra; F. H. Séguin; C. K. Li; R. D. Petrasso; V. Yu Glebov; P. B. Radha; D. D. Meyerhofer; T. C. Sangster; D. P. McNabb; P. A. Amendt; R. N. Boyd; S. P. Hatchett; S. Quaglioni; J. R. Rygg; I. J. Thompson; A. D. Bacher; H. W. Herrmann; Y. H. Kim

2012-07-10T23:59:59.000Z

279

Macroeconomic effects of high oil prices on the Swiss economy: 2003â??2008  

Science Journals Connector (OSTI)

In this paper, we examine the macroeconomic impact of the high oil price era between 2003 and mid-2008 on the Swiss economy. Using a medium-scale disequilibrium macroeconometric model, we focus not only on the effects of oil prices on the real GDP growth but also on their effects on demand-side components, prices, labour market and capacity output. Our simulation results indicate that high oil prices still had a non-negligible negative impact on economic performance despite the observed above average real economic growth rates. We have also found that an accommodative monetary policy might help in smoothing the negative effects of oil price shocks.

Erdal Atukeren

2011-01-01T23:59:59.000Z

280

Dimming of supernovae and gamma ray busts by Compton Scattering and its cosmological implications  

E-Print Network (OSTI)

Free electrons deplete photons from type Ia supernovae through the (inverse) Compton scattering. This Compton dimming increases with redshift and reaches 0.004 mag at $z=1$ and 0.01 mag at $z=2$. Although far from sufficient to invalidate the existence of dark energy, it can bias constraint on dark energy at a level non-negligible for future supernova surveys. This effect is correctable and should be incorporated in supernova analysis. The Compton dimming has similar impact on cosmology based on gamma ray bursts as standard candles.

Pengjie Zhang

2008-02-18T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" 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

Total solar house description and performance  

SciTech Connect

The initial attempt to apply the Total Solar concept to a residence in the Philadelphia, Pennsylvania, area is described. A very large storage capacity has made it possible to use only solar energy for meeting the heating, cooling and hot water needs for the entire year, with a parasitic power penalty of about 3500 kWh. Winter temperatures were maintained at 68/sup 0/F with 60/sup 0/F night setback, summer at 76/sup 0/F. Occupant intervention was negligible and passive overheat was minimized. The extra cost for the system, approximately $30,000 is readily amortized by the savings in purchased energy.

Starobin, L. (Univ. of Pennsylvania, Philadelphia); Starobin, J.

1981-01-01T23:59:59.000Z

282

Development of a gas backup heater for solar domestic hot-water systems. Final report, April 1978-April 1980  

SciTech Connect

A comprehensive program was undertaken to develop a unique gas fired backup for solar domestic hot water systems. Detailed computer design tools were written. A series of heat transfer experiments were performed to characterize the performance of individual components. A full scale engineering prototype, including the solar preheat tank and solar heat exchanger, was designed, fabricated and subjected to limited testing. Firing efficiency for the backup system was found to be 81.4% at a firing rate of 50,000 Btu/h. Long term standby losses should be negligible.

Morrison, D.J.; Grunes, H.E.; de Winter, F.; Armstrong, P.R.

1980-06-01T23:59:59.000Z

283

Simulation of the formation of the PS?1 spheromak  

Science Journals Connector (OSTI)

Several interesting characteristics of the PS?1 spheromak plasma have been inferred from one?dimensional simulations of the implosion phase of the experiment. The calculations demonstrate that metallic impurities in the pre?imploded plasma which come from the electrodes strongly affect the dynamics of the implosion. The simulations also indicate that the resistivity and Joule heating are much larger than their classical values suggesting that microinstabilities are a principal source of ion heating. Finally the calculations suggest the existence of a hot low?density plasma between the plasma column and the wall which carries a non?negligible fraction of the poloidal current.

A. G. Sgro; D. Winske

1981-01-01T23:59:59.000Z

284

Process for forming silicon carbide films and microcomponents  

DOE Patents (OSTI)

Silicon carbide films and microcomponents are grown on silicon substrates at surface temperatures between 900 K and 1700 K via C{sub 60} precursors in a hydrogen-free environment. Selective crystalline silicon carbide growth can be achieved on patterned silicon-silicon oxide samples. Patterned SiC films are produced by making use of the high reaction probability of C{sub 60} with silicon at surface temperatures greater than 900 K and the negligible reaction probability for C{sub 60} on silicon dioxide at surface temperatures less than 1250 K. 5 figs.

Hamza, A.V.; Balooch, M.; Moalem, M.

1999-01-19T23:59:59.000Z

285

Locking Information in Black Holes  

Science Journals Connector (OSTI)

We show that a central presumption in the debate over black-hole information loss is incorrect. Ensuring that information not escape during evaporation does not require that it all remain trapped until the final stage of the process. Using the recent quantum information-theoretic result of locking, we show that the amount of information that must remain can be very small, even as the amount already radiated is negligible. Information need not be additive: A small system can lock a large amount of information, making it inaccessible. Only if the set of initial states is restricted can information leak.

John A. Smolin and Jonathan Oppenheim

2006-02-28T23:59:59.000Z

286

Integrated Modeling of Building Energy Requirements IncorporatingSolar Assisted Cooling  

SciTech Connect

This paper expands on prior Berkeley Lab work on integrated simulation of building energy systems by the addition of active solar thermal collecting devices, technology options not previously considered (Siddiqui et al 2005). Collectors can be used as an alternative or additional source of hot water to heat recovery from reciprocating engines or microturbines. An example study is presented that evaluates the operation of solar assisted cooling at a large mail sorting facility in southern California with negligible heat loads and year-round cooling loads. Under current conditions solar thermal energy collection proves an unattractive option, but is a viable carbon emission control strategy.

Firestone, Ryan; Marnay, Chris; Wang, Juan

2005-08-10T23:59:59.000Z

287

Crystal-liquid interfacial free energy of hard spheres via a novel thermodynamic integration scheme  

E-Print Network (OSTI)

The hard sphere crystal-liquid interfacial free energy, ($\\gamma_{\\rm cl}$), is determined from molecular dynamics simulations using a novel thermodynamic integration (TI) scheme. The advantage of this TI scheme compared to previous methods is to successfully circumvent hysteresis effects due to the movement of the crystal-liquid interface. This is accomplished by the use of extremely short-ranged and impenetrable Gaussian flat walls which prevent the drift of the interface while imposing a negligible free-energy penalty. We find that it is crucial to analyze finite-size effects in order to obtain reliable estimates of $\\gamma_{\\rm cl}$ in the thermodynamic limit.

Benjamin, Ronald

2014-01-01T23:59:59.000Z

288

Resolving The ISM Surrounding GRBs with Afterglow Spectroscopy  

SciTech Connect

We review current research related to spectroscopy of gamma-ray burst (GRB) after-glows with particular emphasis on the interstellar medium (ISM) of the galaxies hosting these high redshift events. These studies reveal the physical conditions of star-forming galaxies and yield clues to the nature of the GRB progenitor. We offer a pedagogical review of the experimental design and review current results. The majority of sightlines are characterized by large HI column densities, negligible molecular fraction, the ubiquitous detection of UV pumped fine-structure transitions, and metallicities ranging from 1/100 to nearly solar abundance.

Prochaska, J. X. [Lick Observatory, University of California, Santa Cruz (United States); Chen, H.-W. [Dept. of Astronomy and Astrophysics and Kavli Institute for Cosmological Physics, University of Chicago (United States); Dessauges-Zavadsky, M. [Observatoire de Geneve, Sauverny Switzerland (Switzerland); Bloom, J. S. [Department of Astronomy, University of California, Berkeley (United States)

2008-05-22T23:59:59.000Z

289

Fermi-level depinning and contact resistance reduction in metal/n-Ge junctions by insertion of W-encapsulating Si cluster films  

SciTech Connect

We demonstrate Fermi-level depinning in metal/Ge junctions and a significant reduction of specific contact resistivity of n-Ge by inserting an ultra-thin semiconducting Si-rich W silicide film (WSi{sub n}, n?=?12–14) composed of W-encapsulating Si clusters. Dependence of the specific contact resistivity on the electron Schottky barrier height followed the ideal exponential relation for various contact metal species. This result indicates that the insertion of the WSi{sub n} film provides a negligible contribution to contact resistivity because its tunneling resistance is very low owing to the low offset of the conduction band edge of Ge.

Okada, Naoya [Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562 (Japan); Institute of Applied Physics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 (Japan); Uchida, Noriyuki [Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562 (Japan); Kanayama, Toshihiko [Institute of Applied Physics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 (Japan); National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568 (Japan)

2014-02-10T23:59:59.000Z

290

Substitution of the Arginine/Leucine Residues in Apidaecin Ib with Peptoid Residues: Effect on Antimicrobial Activity, Cellular Uptake, and Proteolytic Degradation  

Science Journals Connector (OSTI)

Conversely, apidaecin and its peptoid?peptide hybrids are able to cross the plasma membrane in eukaryotic cells and to diffuse in the cytosol, although their translocating ability is far less effective than that of other known cell permeant peptides. ... On human erythrocytes, the lytic effect of all the tested peptides was negligible (?2%) at either 30 or 300 ?M (Table 2). ... (ii) The effect of apidaecin on the ATPase activity of DnaK, and the interactions of apidaecin with E.coli lidless DnaK and DnaK D-E helix were studied. ...

Marina Gobbo; Monica Benincasa; Giulio Bertoloni; Barbara Biondi; Ryan Dosselli; Emanuele Papini; Elena Reddi; Raniero Rocchi; Regina Tavano; Renato Gennaro

2009-07-27T23:59:59.000Z

291

Photochemical Production of Oligothiophene and Polythiophene Micropatterns from 2,5-diiodothiophene on Au in UHV  

SciTech Connect

Fabrication of oligothiophene and polythiophene micropatterns is demonstrated by photochemical reactions of 2, 5-diiodothiophene adsorbed on an Au coated Si wafer under UHV conditions. For patterning, a TEM grid is utilized as a model stencil mask. Fluorescence microscopic analysis shows that polymer microstructures with good pattern fidelity are attained over a large area. RAIRS and NEXAFS analyses indicate that the electronic and molecular structures of the produced polymer are similar to those of chemically synthesized polythiophene. The structural defects of the photochemically produced polymer are negligible. The present procedure provides a very efficient strategy for growth and patterning of conjugated polymer microstructures with high quality in one step.

Liu,G.; Natarajan, S.; Kim, S.

2005-01-01T23:59:59.000Z

292

The Effect of Malpractice Reform on Emergency Department Care  

Science Journals Connector (OSTI)

...factors, not explicitly modeled, that are stable over time, such as teaching status or certain features of state tort law. In sensitivity analyses, we tested the effect of omitting the diagnosis covariates, since diagnosis might be affected by the physician's decision regarding admission, and the effect... One aim of malpractice reform has been to reduce the practice of defensive medicine. Laws in three states that changed the malpractice standard for emergency care to gross negligence did not substantially influence practice intensity in emergency departments.

Waxman D.A.Greenberg M.D.Ridgely M.S.Kellermann A.L.Heaton P.

2014-10-16T23:59:59.000Z

293

Development of correction factors for landfill gas emission model suiting Indian condition to predict methane emission from landfills  

Science Journals Connector (OSTI)

Abstract Methane emission from landfill gas emission (LandGEM) model was validated through the results of laboratory scale biochemical methane potential assay. Results showed that LandGEM model over estimates methane (CH4) emissions; and the true CH4 potential of waste depends on the level of segregation. Based on these findings, correction factors were developed to estimate CH4 emission using LandGEM model especially where the level of segregation is negligible or does not exist. The correction factors obtained from the study were 0.94, 0.13 and 0.74 for food waste, mixed un-segregated municipal solid waste (MSW) and vegetable wastes, respectively.

Avick Sil; Sunil Kumar; Jonathan W.C. Wong

2014-01-01T23:59:59.000Z

294

The effect of freezing on the sulfate-chloride and density-chloride ratios of sea-water  

E-Print Network (OSTI)

. It is commoniy hold that tho changes are negligible for most practical purposes, However, Cox and Culkin et al. (1O62) hsvo shown that there arc definite changos in the density-chlorinitv ratio fro? place to place and frcm top to bottom in thc sea... in the sulphate-chloride ratio would be expected to have a corresponi- ingly larger effect, on density than would one of the less abundant iona. CHAPTER II LITERATURE REVIEW Evidence for Sulphate Enricl ment in Ice The sulphate-chloride ratio was studied...

Burkhalter, Albert Charles

2012-06-07T23:59:59.000Z

295

Space/Time Analysis of Fecal Pollution and Rainfall in an Eastern North Carolina Estuary  

Science Journals Connector (OSTI)

Department of Fisheries and Wildlife, Michigan State University, East Lansing, Michigan 48824, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, and Institute of Marine Sciences, University of North Carolina at Chapel Hill, Morehead City, North Carolina 28557 ... The negligible decay detected in measured FIB concentrations away from shore is most likely due to the NPRE being relatively shallow (a few meters) and being impacted by wind and tide-induced mixing. ...

Angela D. Coulliette; Eric S. Money; Marc L. Serre; Rachel T. Noble

2009-04-14T23:59:59.000Z

296

Discussion on the energy content of the galactic dark matter Bose-Einstein condensate halo in the Thomas-Fermi approximation  

E-Print Network (OSTI)

We show that the galactic dark matter halo, considered composed of an axionlike particles Bose-Einstein condensate \\cite{pir12} trapped by a self-graviting potential \\cite{boh07}, may be stable in the Thomas-Fermi approximation since appropriate choices for the dark matter particle mass and scattering length are made. The demonstration is performed by means of the calculation of the potential, kinetic and self-interaction energy terms of a galactic halo described by a Boehmer-Harko density profile. We discuss the validity of the Thomas-Fermi approximation for the halo system, and show that the kinetic energy contribution is indeed negligible.

J. C. C. de Souza; M. O. C. Pires

2014-01-23T23:59:59.000Z

297

Assessing the risk from the depleted uranium weapons used in Operation Allied Force  

E-Print Network (OSTI)

The conflict in Yugoslavia has been a source of great concern for the neighboring countries, about the radiological and toxic hazard posed by the alleged presence of depleted uranium in NATO weapons. In the present study a worst-case scenario is assumed mainly to assess the risk for Greece and other neighboring countries of Yugoslavia at similar distances . The risk of the weapons currently in use is proved to be negligible at distances greater than 100 Km. For shorter distances classified data of weapons composition are needed to obtain a reliable assessment.

Liolios, T E

1999-01-01T23:59:59.000Z

298

Decay Detector for the Study of Giant Monopole Resonance in Unstable Nuclei  

E-Print Network (OSTI)

is low (the energy region E/A amu in the case of plastic scintillators), the response is non-linear as a result of quenching effects [8]. In this type of detector, the light response is converted into a current by a photomultiplier tube (PMT... to bridge the gap between energy regimes. For energies above 1MeV/amu, the nuclear contribution to the total stopping power is negligible. Above 1 MeV/amu, the electronic stopping power can be calculated with the relativistic Bethe-Bloch formula EQ. (18...

Button, Jonathan Thomas

2013-04-19T23:59:59.000Z

299

Combined 147,146Sm-143,142Nd constraints on the longevity and residence time of early terrestrial crust  

E-Print Network (OSTI)

similar chemical properties. The initial Solar System abundance of 146Sm was low (146Sm/144Sm5 9.5 3 1023) [Kinoshita et al., 2012], hence restricting the ingrowth of 142Nd. Yet the 146Sm-142Nd chronometer has proven to be a sensitive tracer of early... isotope masses are negligible during iso- tope dilution mass spectrometry. 3.2. Measurements of Nd Isotope Ratios and Sm and Nd Concentrations The measurements of Nd isotope ratios were performed by thermal ionization (Nd1) using a Thermo Triton (TIMS...

Roth, Antoine S.G; Bourdon, Bernard; Mojzsis, Stephen J.; Rudge, John F.; Guitreau, Martin; Blichert-Toft, Janne

2014-06-10T23:59:59.000Z

300

Improved self-absorption correction for extended x-ray absorption fine-structure measurements  

SciTech Connect

Extended x-ray absorption fine-structure (EXAFS) data collected in the fluorescence mode are susceptible to an apparent amplitude reduction due to the self-absorption of the fluorescing photon by the sample before it reaches a detector. Previous treatments have made the simplifying assumption that the effect of the EXAFS on the correction term is negligible, and that the samples are in the thick limit. We present a nearly exact treatment that can be applied for any sample thickness or concentration, and retains the EXAFS oscillations in the correction term.

Booth, C.H.; Bridges, F.

2003-06-04T23:59:59.000Z

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301

Monolithic interconnected module with a tunnel junction for enhanced electrical and optical performance  

DOE Patents (OSTI)

An improved thermophotovoltaic (TPV) n/p/n device is provided. Monolithic Interconnected Modules (MIMS), semiconductor devices converting infrared radiation to electricity, have been developed with improved electrical and optical performance. The structure is an n-type emitter on a p-type base with an n-type lateral conduction layer. The incorporation of a tunnel junction and the reduction in the amount of p-type material used results in negligible parasitic absorption, decreased series resistance, increased voltage and increased active area. The novel use of a tunnel junction results in the potential for a TPV device with efficiency greater than 24%.

Murray, Christopher S. (Bethel Park, PA); Wilt, David M. (Bay Village, OH)

2000-01-01T23:59:59.000Z

302

Impact of graphene polycrystallinity on the performance of graphene field-effect transistors  

SciTech Connect

We have used a multi-scale physics-based model to predict how the grain size and different grain boundary morphologies of polycrystalline graphene will impact the performance metrics of graphene field-effect transistors. We show that polycrystallinity has a negative impact on the transconductance, which translates to a severe degradation of the maximum and cutoff frequencies. On the other hand, polycrystallinity has a positive impact on current saturation, and a negligible effect on the intrinsic gain. These results reveal the complex role played by graphene grain boundaries and can be used to guide the further development and optimization of graphene-based electronic devices.

Jiménez, David; Chaves, Ferney [Departament d'Enginyeria Electrònica, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193-Bellaterra (Spain); Cummings, Aron W.; Van Tuan, Dinh [ICN2, Institut Català de Nanociencia i Nanotecnologia, Campus UAB, 08193 Bellaterra (Barcelona) (Spain); Kotakoski, Jani [Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Wien (Austria); Department of Physics, University of Helsinki, P.O. Box 43, 00014 University of Helsinki (Finland); Roche, Stephan [ICN2, Institut Català de Nanociencia i Nanotecnologia, Campus UAB, 08193 Bellaterra (Barcelona) (Spain); ICREA, Institució Catalana de Recerca i Estudis Avançats, 08070 Barcelona (Spain)

2014-01-27T23:59:59.000Z

303

Adsorption of silver dimer on graphene - A DFT study  

SciTech Connect

We performed a systematic density functional theory (DFT) study of the adsorption of silver dimer (Ag{sub 2}) on graphene using SIESTA (Spanish Initiative for Electronic Simulations with Thousands of Atoms) package, in the generalized gradient approximation (GGA). The adsorption energy, geometry, and charge transfer of Ag2-graphene system are calculated. The minimum energy configuration for a silver dimer is parallel to the graphene sheet with its two atoms directly above the centre of carbon-carbon bond. The negligible charge transfer between the dimer and the surface is also indicative of a weak bond. The methodology demonstrated in this paper may be applied to larger silver clusters on graphene sheet.

Kaur, Gagandeep, E-mail: gaganj1981@yahoo.com [Department of Physics and Centre of Advanced Studies in Physics, Panjab University, Chandigarh-160014, India and Chandigarh Engineering College, Landran, Mohali-140307, Punjab (India); Gupta, Shuchi [Department of Physics and Centre of Advanced Studies in Physics, Panjab University, Chandigarh-160014, India and University Institute of Engineering and Technology, Panjab University, Chandigarh -160014 (India); Rani, Pooja; Dharamvir, Keya [Department of Physics and Centre of Advanced Studies in Physics, Panjab University, Chandigarh-160014 (India)

2014-04-24T23:59:59.000Z

304

Optically opaque color-flavor locked phase inside compact stars  

Science Journals Connector (OSTI)

The contribution of thermally excited electron-positron pairs to the bulk properties of the color-flavor locked quark phase inside compact stars is examined. The presence of these pairs causes the photon mean free path to be much smaller than a typical core radius (R0?1 km) for all temperatures above 25 keV so that the photon contribution to the thermal conductivity is much smaller than that of the Nambu-Goldstone bosons. We also find that the electrons and positrons dominate the electrical conductivity, while their contributions to the total thermal energy is negligible.

Igor A. Shovkovy and Paul J. Ellis

2003-04-28T23:59:59.000Z

305

Strong drive compression of a gas-cooled positron plasma  

SciTech Connect

The use of rotating electric fields to control plasmas has found numerous applications in the manipulation and storage of antimatter. When used in strong magnetic fields plasma heating caused by the applied field is mitigated by cyclotron cooling, leading to an efficient broadband mode of compression known as the strong drive regime. We have found that it is possible to access the strong drive regime in a low field trap where cyclotron cooling is negligible and a gas is used for cooling, and we have been able to compress positron plasmas to more than 10% of the Brillouin density limit.

Cassidy, D. B.; Mills, A. P. Jr. [Department of Physics and Astronomy, University of California, Riverside, California 92521-0413 (United States); Greaves, R. G. [First Point Scientific, Inc., 5330 Derry Avenue, Suite J, Agoura Hills, California 91301 (United States); Meligne, V. E. [Department of Physics and Astronomy, University of California, Riverside, California 92521-0413 (United States); First Point Scientific, Inc., 5330 Derry Avenue, Suite J, Agoura Hills, California 91301 (United States)

2010-03-08T23:59:59.000Z

306

Impurity transport in Alcator C-Mod in the presence of poloidal density variation induced by ion cyclotron resonance heating  

E-Print Network (OSTI)

Impurity particle transport in an ion cyclotron resonance heated Alcator C-Mod discharge is studied with local gyrokinetic simulations and a theoretical model including the effect of poloidal asymmetries and elongation. In spite of the strong minority temperature anisotropy in the deep core region, the poloidal asymmetries are found to have negligible effect on the impurity transport due to low magnetic shear in this region, in agreement with the experimental observations. According to the theoretical model, in outer core regions poloidal asymmetries may contribute to the reduction of the impurity peaking, but uncertainties in atomic physics processes prevent quantitative comparison with experiments.

Mollén, Albert; Reinke, Matthew L; Kazakov, Yevgen O; Howard, Nathan T; Fülöp, Tünde

2014-01-01T23:59:59.000Z

307

Effects of Electron-Cyclotron-Resonance-Heating-Induced Internal Kink Mode on the Toroidal Rotation in the KSTAR Tokamak  

Science Journals Connector (OSTI)

It is observed that the magnitude of the toroidal rotation speed is reduced by the central electron cyclotron resonance heating (ECRH) regardless of the direction of the toroidal rotation. The magnetohydrodynamics activities generally appear with the rotation change due to ECRH. It is shown that the internal kink mode is induced by the central ECRH and breaks the toroidal symmetry. When the magnetohydrodynamics activities are present, the toroidal plasma viscosity is not negligible. The observed effects of ECRH on the toroidal plasma rotation are explained by the neoclassical toroidal viscosity in this Letter. It is found that the neoclassical toroidal viscosity torque caused by the internal kink mode damps the toroidal rotation.

J. Seol; S. G. Lee; B. H. Park; H. H. Lee; L. Terzolo; K. C. Shaing; K. I. You; G. S. Yun; C. C. Kim; K. D. Lee; W. H. Ko; J. G. Kwak; W. C. Kim; Y. K. Oh; J. Y. Kim; S. S. Kim; K. Ida

2012-11-08T23:59:59.000Z

308

Optical losses of Al-free lasers for {lambda}=0.808 and 0.98 {mu}m  

SciTech Connect

In this work, we study the origin of the optical losses in Al-free InGaAsP/GaAs ({lambda}=0.808 {mu}m) and InGaAs/GaAs/InGaP ({lambda}=0.980 {mu}m) lasers. Theoretical modeling and the experimental results indicate that the scattering of the laser beam by refractive index fluctuation in the alloys is the dominant loss in our lasers, and the loss due to the free-carrier absorption and scattering by interface roughness are negligible. {copyright} {ital 1996 American Institute of Physics.}

Yi, H.; Diaz, J.; Lane, B.; Razeghi, M. [Center for Quantum Devices, Northwestern University, Evanston, Illinois 60208 (United States)] [Center for Quantum Devices, Northwestern University, Evanston, Illinois 60208 (United States)

1996-11-01T23:59:59.000Z

309

Importance of the Doppler Effect to the Determination of the Deuteron Binding Energy  

E-Print Network (OSTI)

The deuteron binding energy extracted from the reaction ${}^1H(n,\\gamma){}^2H$ is reviewed with the exact relativistic formula, where the initial kinetic energy and the Doppler effect are taken into account. We find that the negligible initial kinetic energy of the neutron could cause a significant uncertainty which is beyond the errors available up to now. Therefore, we suggest an experiment which should include the detailed informations about the initial kinetic energy and the detection angle. It could reduce discrepancies among the recently reported values about the deuteron binding energy and pin down the uncertainty due to the Doppler broadening of $\\gamma$ ray.

Yongkyu Ko; Myung Ki Cheoun; Il-Tong Cheon

1999-04-01T23:59:59.000Z

310

Anisotropic flow generated by hard partons in medium  

E-Print Network (OSTI)

Hard partons which are produced copiously in nuclear collisions at the LHC, deposit most of their energy and momentum into the surrounding quark-gluon plasma. We show that this generates streams in the plasma and contributes importantly to flow anisotropies. With the help of event-by-event three-dimensional perfect hydrodynamic simulations we calculate the observable azimuthal anisotropies of hadronic distributions and show that the proposed mechanism is capable of generating non-negligible part of the observed signal. Hence, it must be taken into account in quantitative studies in which one tries to extract the values of viscosities from the comparison of simulated results with measured data.

Tomasik, Boris

2015-01-01T23:59:59.000Z

311

Electronic properties of graphite in tilted magnetic fields  

SciTech Connect

The minimal nearest-neighbor tight-binding model with the Peierls substitution is employed to describe the electronic structure of Bernal-stacked graphite subject to tilted magnetic fields. We show that while the presence of the in-plane component of the magnetic field has a negligible effect on the Landau level structure at the K point of the graphite Brillouin zone, at the H point it leads to the experimentally observable splitting of Landau levels which grows approximately linearly with the in-plane field intensity.

Goncharuk, Nataliya A.; Smr?ka, Ludvík [Institute of Physics, Academy of Science of the Czech Republic, v. v. i., Cukrovarnická 10, 162 53 Praha 6 (Czech Republic)

2014-05-15T23:59:59.000Z

312

Interpretation of kinetic rate data taken in a channel flow cell  

SciTech Connect

Nonuniform current distribution can complicate the interpretation of kinetic rate measurements. This paper shows explicitly how nonuniformities affect measurements in the flow-channel cell. Results are given for linear and Tafel kinetics and can be used to relate measurable electrochemical quantities to kinetic parameters. In addition to the appropriate polarization parameter, the interpretation of data requires knowledge of the ratio of the two characteristic lengths and the placement of the reference electrode. The analysis assumes that the ohmic potential drop is subtracted from the measurements by the interruption of current, and that concentration variations are negligible.

West, A.C.; Newman, J. (Materials and Chemical Sciences Div., Lawrence Berkeley Lab., and Dept. of Chemical Engineering, Univ. of California, Berkeley, CA (US))

1989-12-01T23:59:59.000Z

313

Corrections to kinetic measurements taken on a disk electrode  

SciTech Connect

Below the limiting current, the rotating disk electrode has a nonuniform current distribution. When the nonuniformities are not explicitly accounted for, errors in values of kinetic parameters determined through measurements on a disk can result. In this analysis, valid for Tafel kinetics, correction factors are obtained as a function of the dimensionless average current density.It is assumed that ohmic corrections are made by the interruption of current. The results indicate that, under certain conditions, the errors are negligible and that the disk geometry, despite its nonuniformities, is adequate for the investigation of systems characterized by Tafel kinetics.

West, A.C.; Newman, J.

1989-01-01T23:59:59.000Z

314

X-ray-diffraction determination of the Ni-dopant site in single-crystal YBa2Cu3O7-?  

Science Journals Connector (OSTI)

Anomalous dispersive x-ray-diffraction measurements have determined the dopant-site distribution in Ni-doped single crystals of the high-temperature superconductor YBa2Cu3O7-?. The data from a YBa2(Cu0.83Ni0.17)3O7-? crystal show that over 95% of the Ni dopants occupy the Cu(2) site in the copper oxide planes, with negligible occupation of the Cu(1) copper oxide chain sites. General guidelines are presented for selecting the most effective hkl diffraction planes for measuring dopant concentration profiles. Direct measurement of the energy dependence of the dopant atomic scattering forces is also demonstrated.

S. A. Hoffman; M. A. Castro; G. C. Follis; S. M. Durbin

1994-05-01T23:59:59.000Z

315

An experimental investigation of critical heat flux in subcooled internal flow  

E-Print Network (OSTI)

bubble and the wall may completely evaporate during the time required for the bubble to pass (Ueda and Kim, 1986). The length, Ls, and velocity, Us, of the bubble and the thickness, 5, of the liquid sublayer can be predicted by performing a stability... on the dispersion relation for stability of the vertical liquid-vapor interface between the moving vapor bubble and the liquid sublayer, and assumes that the effects of gravity are negligible and that the sublayer velocity is much smaller that the vapor velocity...

Shatto, Donald Patrick

2012-06-07T23:59:59.000Z

316

Longitudinal Critical Current in Type-II Superconductors  

Science Journals Connector (OSTI)

The longitudinal critical current of a bulk type-II superconductor near the transition field Hc2 has been calculated from the Ginzburg-Landau equations via a simple extension of Abrikosov's treatment of the mixed state, valid when the self-field of the current can be considered negligible compared with the external field. The critical current is given by (4?Jcc)=(23)32(Hcb?)(1-HHc2)32?(1-12?2)This expression should be obeyed very near Hc2 by small wires with strong pinning and with surfaces properly treated to inhibit surface currents.

R. G. Boyd

1966-05-06T23:59:59.000Z

317

Model-Independent Determinations of B -> D l nu , D* l nu Form Factors  

E-Print Network (OSTI)

We present nonperturbative, model-independent parametrizations of the individual QCD form factors relevant to B -> D* l nu and B -> D l nu decays. These results follow from dispersion relations and analyticity, without recourse to heavy quark symmetry. To describe a form factor with two percent accuracy, three parameters are necessary, one of which is its normalization at zero recoil, F(1). We combine the individual form factors using heavy quark symmetry to extract values for the product |V_{cb}| F(1) from B -> D* l nu data with negligible extrapolation uncertainty.

C. Glenn Boyd; Benjamin Grinstein; Richard F. Lebed

1995-08-02T23:59:59.000Z

318

Bypass Flow Study  

SciTech Connect

The purpose of the fluid dynamics experiments in the MIR (Matched Index of-Refraction) flow system at Idaho National Laboratory (INL) is to develop benchmark databases for the assessment of Computational Fluid Dynamics (CFD) solutions of the momentum equations, scalar mixing, and turbulence models for the flow ratios between coolant channels and bypass gaps in the interstitial regions of typical prismatic standard fuel element (SFE) or upper reflector block geometries of typical Modular High-temperature Gas-cooled Reactors (MHTGR) in the limiting case of negligible buoyancy and constant fluid properties. The experiments use Particle Image Velocimetry (PIV) to measure the velocity fields that will populate the bypass flow study database.

Richard Schultz

2011-09-01T23:59:59.000Z

319

One-loop operator matching in the static heavy and domain-wall light quark system with O(a) improvement  

E-Print Network (OSTI)

We discuss perturbative O(g^2a) matching with static heavy quarks and domain-wall light quarks for lattice operators relevant to B-meson decays and $B^0$-$\\bar{B}^0$ mixing. The chiral symmetry of the light domain-wall quarks does not prohibit operator mixing at O(a) for these operators. The O(a) corrections to physical quantities are non-negligible and must be included to obtain high-precision simulation results for CKM physics. We provide results using plaquette, Symanzik, Iwasaki and DBW2 gluon actions and applying APE, HYP1 and HYP2 link-smearing for the static quark action.

Tomomi Ishikawa; Yasumichi Aoki; Jonathan M. Flynn; Taku Izubuchi; Oleg Loktik

2011-01-05T23:59:59.000Z

320

Large two-dimensional electronic systems: Self-consistent energies and densities at low cost  

Science Journals Connector (OSTI)

We derive a self-consistent local variant of the Thomas-Fermi approximation for (quasi-) two-dimensional (2D) systems by localizing the Hartree term. The scheme results in an explicit orbital-free representation of the electron density and energy in terms of the external potential, the number of electrons, and the chemical potential determined upon normalization. We test the method over a variety 2D nanostructures by comparing to the Kohn-Sham 2D local-density approximation (LDA) calculations up to 600 electrons. Accurate results are obtained in view of the negligible computational cost. We also assess a local upper bound for the Hartree energy.

E. Räsänen; S. Pittalis; G. Bekçio?lu; I. Makkonen

2013-01-31T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" 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

Influence of Disorder on Conductance in Bilayer Graphene under Perpendicular Electric Field  

Science Journals Connector (OSTI)

Steep increase of the resistance is observed under high electric field; however, the resistance does not diverge even at low temperatures. ... Here, from the elementary electrostatics, the electric field is given by E = {(Vtg ? Vtg0) ? (Vbg ? Vbg0)}/{(?0/?b)db + dgr + (?0/?t)dt}, where Vtg0 and Vbg0 are the gate voltages that give the minimum resistance on the diagonal ridge line, corresponding to E = 0, and dgr is the thickness of the bilayer graphene, which is negligible in the expression for our device structure. ...

Hisao Miyazaki; Kazuhito Tsukagoshi; Akinobu Kanda; Minoru Otani; Susumu Okada

2010-08-30T23:59:59.000Z

322

Thermophotovoltaic Array Optimization  

SciTech Connect

A systematic approach to thermophotovoltaic (TPV) array design and fabrication was used to optimize the performance of a 192-cell TPV array. The systematic approach began with cell selection criteria that ranked cells and then matched cell characteristics to maximize power output. Following cell selection, optimization continued with an array packaging design and fabrication techniques that introduced negligible electrical interconnect resistance and minimal parasitic losses while maintaining original cell electrical performance. This paper describes the cell selection and packaging aspects of array optimization as applied to fabrication of a 192-cell array.

SBurger; E Brown; K Rahner; L Danielson; J Openlander; J Vell; D Siganporia

2004-07-29T23:59:59.000Z

323

The self-stabilising dynamics of bicycles  

E-Print Network (OSTI)

We analyse the classical problem of the stability of bicycles when moving quickly and upright. Developing a lean causes the front wheel to turn thereby setting the bicycle instantaneously into circular motion. The centripetal force associated with the lean-dependent turning circle gives a restoring torque which corrects the lean. The force also helps self-steer the front wheel, ensuring the bicycle continues in an essentially straight path. We give the frequency of lean oscillations about the vertical executed during riding. As in the literature, we discuss the neglect of gyroscopic effects, which experiment suggests are negligible.

Warner, Mark

2010-01-01T23:59:59.000Z

324

An ultra-thin diamond membrane as a transmission particle detector and vacuum window for external microbeams  

SciTech Connect

Several applications of external microbeam techniques demand a very accurate and controlled dose delivery. To satisfy these requirements when post-sample ion detection is not feasible, we constructed a transmission single-ion detector based on an ultra-thin diamond membrane. The negligible intrinsic noise provides an excellent signal-to-noise ratio and enables a hit-detection efficiency of close to 100%, even for energetic protons, while the small thickness of the membrane limits beam spreading. Moreover, because of the superb mechanical stiffness of diamond, this membrane can simultaneously serve as a vacuum window and allow the extraction of an ion microbeam into the atmosphere.

Grilj, V.; Skukan, N.; Jakši?, M. [Division of Experimental Physics, Ru?er Boškovi? Institute, 10000 Zagreb (Croatia)] [Division of Experimental Physics, Ru?er Boškovi? Institute, 10000 Zagreb (Croatia); Pomorski, M. [CEA-LIST, Diamond Sensors Laboratory, Gif-sur-Yvette F-91191 (France)] [CEA-LIST, Diamond Sensors Laboratory, Gif-sur-Yvette F-91191 (France); Kada, W. [Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515 (Japan)] [Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515 (Japan); Iwamoto, N.; Kamiya, T.; Ohshima, T. [Takasaki Advanced Radiation Research Institute, Japan Atomic Energy Agency (JAEA), Takasaki, Gunma 370-1292 (Japan)] [Takasaki Advanced Radiation Research Institute, Japan Atomic Energy Agency (JAEA), Takasaki, Gunma 370-1292 (Japan)

2013-12-09T23:59:59.000Z

325

Heat removal aspects of Liquid Metal Fast Breeder Reactor safety in light of the Three Mile Island incident  

SciTech Connect

The safety aspects of the Liquid Metal Fast Breeder Reactor (LMFBR) loop design are compared with those of the Light Water Reactor (LWR), in light of the Three Mile Island (TMI) incident. The events at TMI are briefly described, the fundamental differences between the LWR water coolant and the LMFBR sodium coolant are presented, and the design of analogous LMFBR safety systems under similar events as those at TMI is discussed. A preliminary qualitative evaluation of a TMI-equivalent accident for an LMFBR indicates that there is likely to be: (1) negligible pressure transients in the primary loop, (2) no core damage, (3) isolation of the incident at the steam generator, and (4) no radiation release to the environment, except a negligible amount of tritium from the secondary sodium. Furthermore, with the absence of the ECCS (Emergency Core Cooling System), pressurizer, and other pressure-related components in the LMFBR design, operator action for a LMFBR should be much simpler in dealing with the coolant upset condition and the decay heat removal problems.

Victor, H.R.; Graf, D.G.

1980-12-01T23:59:59.000Z

326

Method and apparatus for powering an electrodeless lamp with reduced radio frequency interference  

DOE Patents (OSTI)

An electrodeless lamp waveguide structure includes tuned absorbers for spurious RF signals. A lamp waveguide with an integral frequency selective attenuation includes resonant absorbers positioned within the waveguide to absorb spurious out-of-band RF energy. The absorbers have a negligible effect on energy at the selected frequency used to excite plasma in the lamp. In a first embodiment, one or more thin slabs of lossy magnetic material are affixed to the sidewalls of the waveguide at approximately one quarter wavelength of the spurious signal from an end wall of the waveguide. The positioning of the lossy material optimizes absorption of power from the spurious signal. In a second embodiment, one or more thin slabs of lossy magnetic material are used in conjunction with band rejection waveguide filter elements. In a third embodiment, one or more microstrip filter elements are tuned to the frequency of the spurious signal and positioned within the waveguide to couple and absorb the spurious signal's energy. All three embodiments absorb negligible energy at the selected frequency and so do not significantly diminish the energy efficiency of the lamp.

Simpson, James E. (Gaithersburg, MD)

1999-01-01T23:59:59.000Z

327

Method and apparatus for powering an electrodeless lamp with reduced radio frequency interference  

DOE Patents (OSTI)

An electrodeless lamp waveguide structure includes tuned absorbers for spurious RF signals. A lamp waveguide with an integral frequency selective attenuation includes resonant absorbers positioned within the waveguide to absorb spurious out-of-band RF energy. The absorbers have a negligible effect on energy at the selected frequency used to excite plasma in the lamp. In a first embodiment, one or more thin slabs of lossy magnetic material are affixed to the sidewalls of the waveguide at approximately one quarter wavelength of the spurious signal from an end wall of the waveguide. The positioning of the lossy material optimizes absorption of power from the spurious signal. In a second embodiment, one or more thin slabs of lossy magnetic material are used in conjunction with band rejection waveguide filter elements. In a third embodiment, one or more microstrip filter elements are tuned to the frequency of the spurious signal and positioned within the waveguide to couple and absorb the spurious signal's energy. All three embodiments absorb negligible energy at the selected frequency and so do not significantly diminish the energy efficiency of the lamp. 18 figs.

Simpson, J.E.

1999-06-08T23:59:59.000Z

328

Laser surface cleaning  

SciTech Connect

The objective of this work is a laboratory demonstration that red-lead primer and two-part epoxy paints can be stripped from concrete and metal surfaces using surface cleaning systems based on pulsed-repetition CO{sub 2} lasers. The three goals are to: (1) demonstrate coatings removal, including surface pore cleaning; (2) demonstrate that there is negligible release of ablated contaminants to the environment; and (3) demonstrate that the process will generate negligible amounts of additional waste compared to competing technologies. Phase 1 involved site visits to RMI and Fernald to assess the cleaning issues for buildings and parts. In addition, Phase 1 included detailed designs of a more powerful system for industrial cleaning rates, including laser, articulating optics, ablated-material capture suction nozzle attached to a horizontal raster scanner for floor cleaning, and filtration system. Some concept development is also being done for using robots, and for parts cleaning. In Phase 2 a transportable 6 kW system will be built and tested, with a horizontal surface scanner for cleaning paint from floors. The laboratory tests will again be instrumented. Some concept development will continue for using robots, and for parts cleaning. This report describes Phase 1 results.

Freiwald, J.G.; Freiwald, D.A.

1994-12-31T23:59:59.000Z

329

NLTE Strontium and Barium in metal poor red giant stars  

E-Print Network (OSTI)

We present atmospheric models of red giant stars of various metallicities, including extremely metal poor (XMP, [Fe/H]Strontium (Sr) and Barium (Ba), treated in Non-Local Thermodynamic Equilibrium (NLTE) with various degrees of realism. We conclude that 1) for all lines that are useful Sr and Ba abundance diagnostics the magnitude and sense of the computed NLTE effect on the predicted line strength is metallicity dependent, 2) the indirect NLTE effect of overlap between Ba and Sr transitions and transitions of other species that are also treated in NLTE non-negligibly enhances NLTE abundance corrections for some lines, 3) the indirect NLTE effect of NLTE opacity of other species on the equilibrium structure of the atmospheric model is not significant, 4) the computed NLTE line strengths differ negligibly if collisional b-b and b-f rates are an order of magnitude smaller or larger than those calculated with standard analytic formulae, and 5) the effect of NLTE upon the resonance line of Ba II at 4554.03 AA is independent of whether that line is treated with hyperfine splitting. As a result, the derivation of abundances of Ba and Sr for metal-poor red giant stars with LTE modeling that are in the literature should be treated with caution.

C. I. Short; P. H. Hauschildt

2006-01-10T23:59:59.000Z

330

Impact of energy supply infrastructure in life cycle analysis of hydrogen and electric systems applied to the Portuguese transportation sector  

Science Journals Connector (OSTI)

Hydrogen and electric vehicle technologies are being considered as possible solutions to mitigate environmental burdens and fossil fuel dependency. Life cycle analysis (LCA) of energy use and emissions has been used with alternative vehicle technologies to assess the Well-to-Wheel (WTW) fuel cycle or the Cradle-to-Grave (CTG) cycle of a vehicle's materials. Fuel infrastructures, however, have thus far been neglected. This study presents an approach to evaluate energy use and CO2 emissions associated with the construction, maintenance and decommissioning of energy supply infrastructures using the Portuguese transportation system as a case study. Five light-duty vehicle technologies are considered: conventional gasoline and diesel (ICE), pure electric (EV), fuel cell hybrid (FCHEV) and fuel cell plug-in hybrid (FC-PHEV). With regard to hydrogen supply, two pathways are analysed: centralised steam methane reforming (SMR) and on-site electrolysis conversion. Fast, normal and home options are considered for electric chargers. We conclude that energy supply infrastructures for FC vehicles are the most intensive with 0.03–0.53 MJeq/MJ emitting 0.7–27.3 g CO2eq/MJ of final fuel. While fossil fuel infrastructures may be considered negligible (presenting values below 2.5%), alternative technologies are not negligible when their overall LCA contribution is considered. EV and FCHEV using electrolysis report the highest infrastructure impact from emissions with approximately 8.4% and 8.3%, respectively. Overall contributions including uncertainty do not go beyond 12%.

Alexandre Lucas; Rui Costa Neto; Carla Alexandra Silva

2012-01-01T23:59:59.000Z

331

The solar photospheric abundance of europium. Results from CO5BOLD 3-D hydrodynamical model atmospheres  

E-Print Network (OSTI)

Context. Europium is an almost pure r-process element, which may be useful as a reference in nucleocosmochronology. Aims. To determine the photospheric solar abundance using CO5BOLD 3-D hydrodynamical model atmospheres. Methods. Disc-centre and integrated-flux observed solar spectra are used. The europium abundance is derived from the equivalent width measurements. As a reference 1D model atmospheres have been used, in addition. Results. The europium photospheric solar abundance is 0.52 +- 0.02 in agreement with previous determinations. We also determine the photospheric isotopic fraction of Eu(151) to be 49 % +- 2.3 % from the intensity spectra and 50% +-2.3 from the flux spectra. This compares well to the the meteoritic isotopic fraction 47.8%. We explore the 3D corrections also for dwarfs and sub-giants in the temperature range ~5000 K to ~6500 K and solar and 1/10--solar metallicities and find them to be negligible for all the models investigated. Conclusions. Our photospheric Eu abundance is in good agreement with previous determinations based on 1D models. This is in line with our conclusion that 3D effects for this element are negligible in the case of the Sun.

A. Mucciarelli; E. Caffau; B. Freytag; H. -G. Ludwig; P. Bonifacio

2008-03-06T23:59:59.000Z

332

Transactional justice and reciprocity: towards a cohesive theory of liability  

Science Journals Connector (OSTI)

The traditional view of tort liability in the USA is based on the assumption that fault generally turns on whether the tortfeasor's actions were 'reasonable'. This understanding has resulted in a legal landscape where the exceptions defy the rule, creating anomalous areas of law that operate according to completely different rationales. This paper suggests that this is because the decisions that have created this landscape are motivated by less articulated rationales. An unarticulated adherence to the concept of transactional justice explains why anomalous doctrines such as 'strict liability' and the 'law of necessity' operate the way they do. But this adherence is tempered by equal awareness of the importance of reciprocal risks – the background risks of participating in society. This limiting doctrine of reciprocity explains the existence of negligence theory, and why some cases fall under a negligence standard while others fall under strict liability. The result is a more cohesive theory of liability, which allows for the intersection of two mutually limiting principles. This theory unites the various conflicting areas of tort law in US jurisprudence in a way that is conceptually logical, so that the 'exceptions' are in fact predictable outcomes of the overarching pattern.

Jr.">Larry Dean Pender Jr.

2010-01-01T23:59:59.000Z

333

Syngas (H2/CO) in a spark-ignition direct-injection engine. Part 1: Combustion, performance and emissions comparison with CNG  

Science Journals Connector (OSTI)

Abstract The combustion, performance, and emissions of syngas (H2/CO) in a four-stroke, direct-injection, spark-ignition engine were experimentally investigated. The engine was operated at various speeds, ranging from 1500 to 2400 rev/min, with the throttle being held in the wide-open position. The start of fuel injection was fixed at 180° before the top dead center, and the ignition advance was set at the maximal brake torque. The air/fuel ratio was varied from the technically possible lowest excess air ratio (?) to lean operation limits. The results indicated that a wider air/fuel operating ratio is possible with syngas with a very low coefficient of variation. The syngas produced a higher in-cylinder peak pressure and heat-release rate peak and faster combustion than for CNG. However, CNG produced a higher brake thermal efficiency (BTE) and lower brake specific fuel consumption (BSFC). The BTE and BSFC of the syngas were on par to those of CNG at higher speeds. For the syngas, the total hydrocarbon emission was negligible at all load conditions, and the carbon monoxide emission was negligible at higher loads and increased under lower load conditions. However, the emission of nitrogen oxides was higher at higher loads with syngas.

Ftwi Yohaness Hagos; A. Rashid A. Aziz; Shaharin A. Sulaiman

2014-01-01T23:59:59.000Z

334

Biases on cosmological parameter estimators from galaxy cluster number counts  

E-Print Network (OSTI)

Sunyaev-Zel'dovich (SZ) surveys are promising probes of cosmology - in particular for Dark Energy (DE) -, given their ability to find distant clusters and provide estimates for their mass. However, current SZ catalogs contain tens to hundreds of objects and maximum likelihood estimators may present biases for such sample sizes. In this work we use the Monte Carlo approach to determine the presence of bias on cosmological parameter estimators from cluster abundance as a function of the area and depth of the survey, and the number of cosmological parameters fitted. Assuming perfect knowledge of mass and redshift some estimators have non-negligible biases. For example, the bias of $\\sigma_8$ corresponds to about $40%$ of its statistical error bar when fitted together with $\\Omega_c$ and $w_0$. Including a SZ mass-observable relation decreases the relevance of the bias, for the typical sizes of current surveys. The biases become negligible when combining the SZ data with other cosmological probes. However, we show that the biases from SZ estimators do not go away with increasing sample sizes and they may become the dominant source of error for an all sky survey at the South Pole Telescope (SPT) sensitivity. The results of this work validate the use of the current maximum likelihood methods for present SZ surveys, but highlight the need for further studies for upcoming experiments. [abridged

M. Penna-Lima; M. Makler; C. A. Wuensche

2013-12-16T23:59:59.000Z

335

On a non-linear sigma model of knotted relaxed states far from thermodynamic equilibrium in plasma physics and beyond  

E-Print Network (OSTI)

We show that a Faddeev-Niemi non-linear sigma model describes in the long wavelength limit a wide class of steady-state, knotted physical systems far from thermodynamic equilibrium which are stable against perturbations of temperature and interact weakly with the external world. In these systems temperature gradients are negligible, inertial effects are negligible in comparison with diffusion effects, entropy is mainly produced through Joule and-or viscous heating, the macroscopic state is described by specifying a unit vector at each point, and the Gauss linking number of this unit vector is lower than a threshold. In fluids and plasmas, the model describes filamentary structures which adjust themselves in order to offer minimum resistance to the medium embedding them and to the electric currents (if any) flowing across them; in the latter case, Gauss linking number is related to magnetic helicity. Both n and the relative velocity of the filament with respect to the medium are approximately Double Beltrami v...

Di Vita, Andrea

2014-01-01T23:59:59.000Z

336

Renewable Energy in South Africa: Issues and Prospects  

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

Renewable Energy in South Africa: Issues and Prospects Renewable Energy in South Africa: Issues and Prospects Speaker(s): Ogunlade Davidson Date: February 1, 2002 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Lynn Price The present contribution of Renewable Energy to the total power supply through grid electricity in South Africa is negligible. However, the government driven by concerns for rural electrification, while realising their overall sustainable objectives and environmental pressures, has set a target of achieving 5% grid supply from renewable technologies by 2010. It is advocated that this target as stated in their strategy paper should be achieved through the development of micro-hydro, biomass, solar and wind systems. Existing renewable energy systems that are operating in South Africa shows that there are major challenges in achieving this target. This

337

NREL: News - NREL Calculates Emissions and Costs of Power Plant Cycling  

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

013 013 NREL Calculates Emissions and Costs of Power Plant Cycling Necessary for Increased Wind and Solar in the West September 24, 2013 New research from the Energy Department's National Renewable Energy Laboratory (NREL) quantifies the potential impacts of increasing wind and solar power generation on the operators of fossil-fueled power plants in the West. To accommodate higher amounts of wind and solar power on the electric grid, utilities must ramp down and ramp up or stop and start conventional generators more frequently to provide reliable power for their customers - a practice called cycling. The study finds that the carbon emissions induced by more frequent cycling are negligible (<0.2%) compared with the carbon reductions achieved through the wind and solar power generation evaluated in the study. Sulfur dioxide

338

1  

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

Sensitivity of Cloud Field Structure to Three Sensitivity of Cloud Field Structure to Three Dimensional Radiative Effects W. O'Hirok and P. Ricchiazzi Institute for Computational Earth System Science University of California Santa Barbara, California C. Gautier Department of Geography and Institute for Computational Earth System Science University of California Santa Barbara, California Introduction During the past decade, research has shown that while 3 dimensional (D) radiative effects are negligible at the horizontal resolution of GCMs, they can be significant at the scale of cloud resolving models. A common thread throughout these studies is the static framework in which they are performed - that is, computations are performed on cloud fields of fixed properties. They ignore the more salient issue of

339

Heat Flow From Four New Research Drill Holes In The Western Cascades,  

Open Energy Info (EERE)

From Four New Research Drill Holes In The Western Cascades, From Four New Research Drill Holes In The Western Cascades, Oregon, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Heat Flow From Four New Research Drill Holes In The Western Cascades, Oregon, Usa Details Activities (1) Areas (1) Regions (0) Abstract: Conceptual models of the thermal structure of the Oregon Cascade Range propose either (1) a narrow zone of magmatic heat sources, flanked by shallow heat-flow anomalies caused by lateral ground-water flow; or (2) a wide zone of magmatic heat sources, with localized, generally negligible ground-water effects. The proposed narrow heat source coincides with the Quaternary volcanic arc, whereas the wider heat source would extend 10-30 km west of the arc. To test the models, four new heat-flow holes were sited

340

Argonne CNM: 2011 Colloquium Series  

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

1 Colloquium Series 1 Colloquium Series 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | Date Title December 21, 2011 "Film Thickness and Elastic Strain Measurements on Silicon-on-Insulator Thin Films," I. Cevdet Noyan, Columbia University, hosted by Jorg Maser Abstract: Silicon-on-insulator (SOI) composites consist of two semiconductor-grade silicon layers bonded to each other via a SiO2 interface. One of these silicon layers is quite thin; it is possible to get thicknesses between 5 and 150 nm. Since this value is much thinner than the extinction distance of X-rays in silicon for commonly used energies, this layer diffracts in the kinematical mode. The second layer is much thicker, around 700 micrometers, and diffracts in the dynamical mode. Both layers can be considered almost perfect, with negligible mosaic structures and no dislocations.

Note: This page contains sample records for the topic "negligible negligible negligible" 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

1  

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

Inversion of Multi-Angle Radiation Measurement Inversion of Multi-Angle Radiation Measurement B. Cairns and M. Alexandrov Columbia University New York, New York A. Lacis and B. Carlson National Aeronautics and Space Administration - Goddard Institute for Space Studies New York, New York Motivation Observations of the polarization and reflectance in bands at 865 nm (negligible liquid water absorption) and 2250 nm (strong liquid water absorption) cannot be fitted by a simple atmospheric model consisting of a homogeneous cloud with a single particle size. If we use the polarization (polarized reflectance) measurements and the reflectance measurements to retrieve cloud particle size independently, we find that it is frequently (although not always) the case that the size retrieved with the polarization measurements is larger than the size retrieved using the

342

ARM - Publications: Science Team Meeting Documents  

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

Detection of Thin Cirrus using a Combinaton of 1.38-um Reflectance and Detection of Thin Cirrus using a Combinaton of 1.38-um Reflectance and Window Brightness Temperature Difference Roskovensky, J.K. and Liou, K.N., Department of Atmospheric Sciences University of California, Los Angeles Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting A new cloud detection scheme has been developed that utilizes 1.38-um reflectance in combination with 8.6-11 um brightness temperature difference to detect cirrus clouds. The 1.38-um channel on board MODIS is useful in detecting thin cirrus due to its high sensitivity to upper tropospheric clouds and a nearly negligible sensitivity to low-level reflectance. Dependent upon neighboring cloud type, water vapor concentration, and the viewing geometry, specific 1.38-um reflectance threshold levels can be

343

Microsoft PowerPoint - NEILS for HTF page 1_ebf.ppt [Compatibility Mode]  

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

A A good HTF must be able to absorb a substantial amount of energy in a given volume, a property known as volumetric heat capacity. Physical properties such as viscosity, thermal stability, and thermal conductivity must also be considered. Ionic liquids (IL) were discovered more than 30 years ago and are organic compounds with negligible vapor pressure. ILs are molten salts with low melting points below 100°C, high liquid range above 400°C, in some cases, freezing points below 0°C. For example, experiments conducted at SRNL examined the ionic liquid known as [C 4 mmim][NTf 2 ] due to commercial availability, good thermal stability, and tolerable viscosity. The studies indicate that the addition of Al 2 O 3 nanoparticles to the ionic liquid can increase density of the liquid by 10%, and increase volumetric heat capacity by 40% compared to neat ILs and 70% compared to traditional volatile

344

A Tracer Test Using Ethanol as a Two-Phase Tracer and 2-Naphthalene  

Open Energy Info (EERE)

Tracer Test Using Ethanol as a Two-Phase Tracer and 2-Naphthalene Tracer Test Using Ethanol as a Two-Phase Tracer and 2-Naphthalene Sulfonate as a Liquid-Phase Tracer at the Coso Geothermal Field Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: A Tracer Test Using Ethanol as a Two-Phase Tracer and 2-Naphthalene Sulfonate as a Liquid-Phase Tracer at the Coso Geothermal Field Details Activities (1) Areas (1) Regions (0) Abstract: A tracer test was conducted at the Coso geothermal field in order to characterize the flow patterns of fluid injected into well 68-20RD. A conservative liquid phase tracer, 2-naphthalene sulfonate, and a two-phase tracer, ethanol, were injected into well 68-20RD. Surrounding production wells were sampled over the subsequent 125 days and analyzed for the two tracers. The liquid-phase tracer showed negligible returns, whereas the

345

Microsoft PowerPoint - Dose Ranges 24Jan 05.ppt  

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

20 40 60 20 40 60 80 100 rem NRC Dose Limit for Public 100 mrem/yr = 1 mSv/yr (DOE, ICRP, NCRP) ANSI standard N43.17 Personnel scanner, max = 25 mrem/yr Cleanup criteria for site decommissioning/ license termination 25 mrem/yr NCRP "Negligible Dose" Medical Diagnostics (A-J) A C D E G B Temporary "Special Case" annual Public Limit (NRC, DOE) NRC Dose Limit for Workers = 5 rem/yr = 50 mSv/yr Cancer Epidemiology Life Span Study (A-bomb survivors) ( Chart compiled by NF Metting, Office of Science DOE/BER; 24Jan2005,"Orders of Magnitude") Absorbed dose: 100 rad = 1 Gray Dose equivalent: 100 rem = 1 Sievert 100 mrem = 1 mSv (1 rem = 1 rad for x- and gamma- rays) Estimated dose for

346

Instrument Series: Microscopy Ultra-High Vacuum, Low- Temperature Scanning  

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

Low- Low- Temperature Scanning Probe Microscope EMSL's ultra-high vacuum, low-temperature scanning probe microscope instrument, or UHV LT SPM, is the preeminent system dedicated to surface chemistry and physics at low temperatures down to 5 K. Operating at low temperatures provides high mechanical stability, superior vacuum conditions, and negligible drift for long-term experiments. With thermal diffusion being entirely suppressed, stable imaging becomes possible even for weakly bound species. The system is primarily used for probing single-site chemical reactivity, while the combination with a hyperthermal molecular beam allows the study of important chemical processes at energies corresponding to the operational temperatures well beyond typical UHV studies. The LT SPM provides

347

PMC-F F2a  

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

F F2a F F2a 0.0102:o U.S. DER-UITAIENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERMINATION RECIPIENT:Pacific Energy Ventures, LLC STATE: CO PROJECT TITLE : Active Acoustic Deterrence of Migratory Whales Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-FOA-0000069 EE0002660 GFO-10-036 0 Based on my review of the information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 451.1 A), I have made the following determination: CX, EA, EIS APPENDIX AND NUMBER: Descript ion: B3.3 Field and laboratory research, inventory, and information collection activities that are directly related to the conservation of fish or wildlife resources and that involve only negligible habitat destruction or population reduction

348

US DEPARl'lIIENT OF ENERGY EERE PROJECT MANAGEMENT CENTER Nl!PA DETERMINATION  

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

DEPARl'lIIENT OF ENERGY DEPARl'lIIENT OF ENERGY EERE PROJECT MANAGEMENT CENTER Nl!PA DETERMINATION RECIPIENT: Snohomish County PUD PROJECf TITLE: Acoustic Effects of Hydrokinetic Tidal Turbines Page 1 on STATE: WA Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-FOA-0000069 DE-EEOOO2654 GFQ-0002654-OO2 0 Based on my review orlhe Information concerning the proposed action, as NEPA Compliance Officer (authori1.ed under DOE Order 4S1.1A), I have made the following determination: ex, EA, EIS APPENDIX ANO NUMBER: Description: B3.3 Field and laboratory research, inventory, and information collection activities that are directly related to the conservation of fish or wildlife resources and that involve only negligible habitat destruction or population reduction

349

Static Temperature Survey At Newberry Caldera Area (Combs, Et Al., 1999) |  

Open Energy Info (EERE)

Newberry Caldera Area Newberry Caldera Area (Combs, Et Al., 1999) Exploration Activity Details Location Newberry Caldera Area Exploration Technique Static Temperature Survey Activity Date Usefulness useful DOE-funding Unknown Notes Downhole data collection during this operation was primarily limited to temperature measurements. These temperature logs were taken with Sandia's platinum-resistance-thermometer (PRT) tool which along with a Sandia logging truck remained on-site for the entire project. This instrument uses a simple resistance bridge, with changes in resistance measured from the surface through a four-conductor cable. Since there are no downhole electronics, temperature drift with time is negligible and the PRT temperature measurements are considered a reference standard for this kind

350

PowerPoint Presentation  

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

MetILs: New Ionic Liquids MetILs: New Ionic Liquids for Flow Batteries Travis M. Anderson and David Ingersoll Sandia National Laboratories Sandia National Laboratories is a multiprogram Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04- 94AL85000. Ionic Liquids (ILs) for Flow Batteries Wasserscheid and Keim, Angew. Chem. Int. Ed. 2000, 3772-3789. Nishimura et al, JP Patent 86,935, 2010 * Low symmetry * Weak Intermolecular Forces * Low charge density * Higher energy density * Negligible vapor pressure * Non-corrosive Ionic Liquids with Metal Cations (MetILs) Ferrocenyl-Functionalized Imidazoliums Zinc- and Silver-Amine Complexes Balasubramanian, Wang, and Murray, J. Am. Chem. Soc. 2006, 9994-9995. Huang, Luo,

351

Dissipative Cryogenic Filters with Zero DC Resistance  

SciTech Connect

The authors designed, implemented and tested cryogenic RF filters with zero DC resistance, based on wires with a superconducting core inside a resistive sheath. The superconducting core allows low frequency currents to pass with negligible dissipation. Signals above the cutoff frequency are dissipated in the resistive part due to their small skin depth. The filters consist of twisted wire pairs shielded with copper tape. Above approximately 1 GHz, the attenuation is exponential in {radical}{omega}, as typical for skin depth based RF filters. By using additional capacitors of 10 nF per line, an attenuation of at least 45 dB above 10 MHz can be obtained. Thus, one single filter stage kept at mixing chamber temperature in a dilution refrigerator is sufficient to attenuate room temperature black body radiation to levels corresponding to 10 mK above about 10 MHz.

Bluhm, Hendrik; Moler, Kathryn A.; /Stanford U., Appl. Phys. Dept

2008-04-22T23:59:59.000Z

352

Circular polarization in the optical afterglow of GRB 121024A  

E-Print Network (OSTI)

Gamma-ray bursts (GRBs) are most probably powered by collimated relativistic outflows (jets) from accreting black holes at cosmological distances. Bright afterglows are produced when the outflow collides with the ambient medium. Afterglow polarization directly probes the magnetic properties of the jet, when measured minutes after the burst, and the geometric properties of the jet and the ambient medium when measured hours to days after the burst. High values of optical polarization detected minutes after burst in GRB 120308A indicate the presence of large-scale ordered magnetic fields originating from the central engine (the power source of the GRB). Theoretical models predict low degrees of linear polarization and negligable circular polarization at late times, when the energy in the original ejecta is quickly transferred to the ambient medium and propagates farther into the medium as a blastwave. Here we report the detection of circularly polarized optical light in the afterglow of GRB 121024A, measured 0.1...

Wiersema, K; Toma, K; van der Horst, A J; Varela, K; Min, M; Greiner, J; Starling, R L C; Tanvir, N R; Wijers, R A M J; Campana, S; Curran, P A; Fan, Y; Fynbo, J P U; Gorosabel, J; Gomboc, A; Gotz, D; Hjorth, J; Jin, Z P; Kobayashi, S; Kouveliotou, C; Mundell, C; O'Brien, P T; Pian, E; Rowlinson, A; Russell, D M; Salvaterra, R; Alighieri, S di Serego; Tagliaferri, G; Vergani, S D; Elliott, J; Farina, C; Hartoog, O E; Karjalainen, R; Klose, S; Knust, F; Levan, A J; Schady, P; Sudilovski, V; Willingale, R

2014-01-01T23:59:59.000Z

353

Third-order nonlinear optical response of colloidal gold nanoparticles prepared by sputtering deposition  

SciTech Connect

The nonlinear optical responses of gold nanoparticles dispersed in castor oil produced by sputtering deposition were investigated, using the thermally managed Z-scan technique. Particles with spherical shape and 2.6 nm of average diameter were obtained and characterized by transmission electron microscopy and small angle X-ray scattering. This colloid was highly stable, without the presence of chemical impurities, neither stabilizers. It was observed that this system presents a large refractive third-order nonlinear response and a negligible nonlinear absorption. Moreover, the evaluation of the all-optical switching figures of merit demonstrated that the colloidal nanoparticles prepared by sputtering deposition have a good potential for the development of ultrafast photonic devices.

Castro, Hemerson P. S.; Alencar, Márcio A. R. C.; Hickmann, Jandir M. [Optics and Materials Group–OPTMA, Universidade Federal de Alagoas, CAIXA POSTAL 2051, 57061-970 Maceió (Brazil)] [Optics and Materials Group–OPTMA, Universidade Federal de Alagoas, CAIXA POSTAL 2051, 57061-970 Maceió (Brazil); Wender, Heberton [Brazilian Synchrotron National Laboratory (LNLS), CNPEM, Rua Giuseppe Máximo Scolfaro 10.000, 13083-970 Campinas (Brazil) [Brazilian Synchrotron National Laboratory (LNLS), CNPEM, Rua Giuseppe Máximo Scolfaro 10.000, 13083-970 Campinas (Brazil); Department of Physics, Universidade Federal do Mato Grosso do Sul, 79070-900, Campo Grande (Brazil); Teixeira, Sergio R. [Institute of Physics, Universidade Federal do Rio Grande do Sul, 91501-970, Porto Alegre (Brazil)] [Institute of Physics, Universidade Federal do Rio Grande do Sul, 91501-970, Porto Alegre (Brazil); Dupont, Jairton [Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul, 91501-970, Porto Alegre (Brazil)] [Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul, 91501-970, Porto Alegre (Brazil)

2013-11-14T23:59:59.000Z

354

Do Diurnal Aerosol Changes Affect Daily Average Radiative Forcing?  

SciTech Connect

Strong diurnal variability of aerosol has been observed frequently for many urban/industrial regions. How this variability may alter the direct aerosol radiative forcing (DARF), however, is largely unknown. To quantify changes in the time-averaged DARF, we perform an assessment of 29 days of high temporal resolution ground-based data collected during the Two-Column Aerosol Project (TCAP) on Cape Cod, which is downwind of metropolitan areas. We demonstrate that strong diurnal changes of aerosol loading (about 20% on average) have a negligible impact on the 24-h average DARF, when daily averaged optical properties are used to find this quantity. However, when there is a sparse temporal sampling of aerosol properties, which may preclude the calculation of daily averaged optical properties, large errors (up to 100%) in the computed DARF may occur. We describe a simple way of reducing these errors, which suggests the minimal temporal sampling needed to accurately find the forcing.

Kassianov, Evgueni I.; Barnard, James C.; Pekour, Mikhail S.; Berg, Larry K.; Michalsky, Joseph J.; Lantz, K.; Hodges, G. B.

2013-06-17T23:59:59.000Z

355

Theoretical approach of freeze seawater desalination on flake ice maker utilizing LNG cold energy  

Science Journals Connector (OSTI)

Abstract In this work, a novel concept in freeze desalination (FD) was introduced. Nowadays the total liquefied natural gas (LNG) production capacity has reached 290 Mt/year. Its enormous cold energy released from re-gasification can be used in the freeze desalination process to minimize the overall energy consumption. A process of FD on flake ice maker utilizing LNG cold energy was designed and simulated by HYSYS software. An ice bucket on flake ice maker was chosen as seawater crystallizer mainly due to its continuous ice making and removing ice without heat source. A dynamic model of the freezing section has been developed and simulated through gPROMS software. The results show that the consumption of 1 kg equivalent LNG cold energy can obtain about 2 kg of ice melt water. In addition, it is shown that the power consumption of this LNG/FD hybrid process is negligible.

Wensheng Cao; Clive Beggs; Iqbal M. Mujtaba

2015-01-01T23:59:59.000Z

356

Heat and mass transfer of moist air in vertical channels  

SciTech Connect

Natural convection heat transfer in vertical open channel flows has been widely studied for various geometric configurations since it concerns a number of applications, ranging from the cooling of electronic equipment to the heating of buildings. This study examines energy transport associated with liquid film condensation or evaporation in natural convection flows driven by differences in density due to temperature and concentration gradients. The most common compositional gradient which is encountered in humid air is considered. A steady, laminar, Boussinesq flow of an ideal gas-vapor mixture is studied for the case of a vertical open plane channel. The influence of the species interdiffusion due to enthalpy difference between air and water vapor is considered first in the case of evaporation. It is shown that the species interdiffusion term is negligible even at moderate temperature differences. This study mainly investigates wall condensation of humid air and preliminary results are presented.

Desrayaud, G.; Garnier, V.; Lauriat, G.

1999-07-01T23:59:59.000Z

357

Nanoscale compositional banding in binary thin films produced by ion-assisted deposition  

SciTech Connect

During the ion-assisted deposition of a binary material, the ion beam can induce the formation of nanoscale ripples on the surface of the growing thin film and compositional banding within its bulk. We demonstrate that this remains true even if the curvature dependence of the sputter yields and ballistic mass redistribution are negligible, and the two atomic species are completely miscible. The concentration of the species with the lower of the two sputter yields is higher at the crests of the ripples than at their troughs. Depending on the angles of incidence of the two atomic species, the incident flux of atoms with the higher sputter yield can either stabilize or destabilize the initially flat surface of the thin film.

Mark Bradley, R. [Department of Physics, Colorado State University, Fort Collins, Colorado 80523 (United States)] [Department of Physics, Colorado State University, Fort Collins, Colorado 80523 (United States)

2013-12-14T23:59:59.000Z

358

Magnetic anisotropies in epitaxial Fe{sub 3}O{sub 4}/GaAs(100) patterned structures  

SciTech Connect

Previous studies on epitaxial Fe{sub 3}O{sub 4} rings in the context of spin-transfer torque effect have revealed complicated and undesirable domain structures, attributed to the intrinsic fourfold magnetocrystalline anisotropy in the ferrite. In this Letter, we report a viable solution to this problem, utilizing a 6-nm-thick epitaxial Fe{sub 3}O{sub 4} thin film on GaAs(100), where the fourfold magnetocrystalline anisotropy is negligible. We demonstrate that in the Fe{sub 3}O{sub 4} planar wires patterned from our thin film, such a unique magnetic anisotropy system has been preserved, and relatively simple magnetic domain configurations compared to those previous reports can be obtained.

Zhang, W., E-mail: xiaotur@gmail.com; Zhang, D.; Yuan, S. J.; Huang, Z. C.; Zhai, Y. [Department of Physics, Southeast University, Nanjing 211189 (China); Wong, P. K. J. [NanoElectronics Group, MESA Institute for Nanotechnology, University of Twente, P. O. Box 217, 7500 AE Enschede (Netherlands); Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 (Singapore); Wu, J. [Department of Physics, University of York, York YO10 5DD (United Kingdom); Xu, Y. B. [Spintronics and Nanodevice Laboratory, Department of Electronics, University of York, York, YO10 5DD (United Kingdom)

2014-10-15T23:59:59.000Z

359

Uncertainty Analysis for Photovoltaic Degradation Rates (Poster)  

SciTech Connect

Dependable and predictable energy production is the key to the long-term success of the PV industry. PV systems show over the lifetime of their exposure a gradual decline that depends on many different factors such as module technology, module type, mounting configuration, climate etc. When degradation rates are determined from continuous data the statistical uncertainty is easily calculated from the regression coefficients. However, total uncertainty that includes measurement uncertainty and instrumentation drift is far more difficult to determine. A Monte Carlo simulation approach was chosen to investigate a comprehensive uncertainty analysis. The most important effect for degradation rates is to avoid instrumentation that changes over time in the field. For instance, a drifting irradiance sensor, which can be achieved through regular calibration, can lead to a substantially erroneous degradation rates. However, the accuracy of the irradiance sensor has negligible impact on degradation rate uncertainty emphasizing that precision (relative accuracy) is more important than absolute accuracy.

Jordan, D.; Kurtz, S.; Hansen, C.

2014-04-01T23:59:59.000Z

360

Poloidal flow damping inside transport barriers in a tokamak  

SciTech Connect

The poloidal flow in a tokamak is damped by collisions. Thus, the poloidal damping can be described by the neoclassical theory. The effective poloidal Mach number, M{sub p}, can be of the order of one or higher inside transport barriers in a tokamak. It is found that the poloidal damping rate decreases exponentially as the effective poloidal Mach number increases. The poloidal damping rate is reduced by one order of magnitude in the presence of sonic M{sub p}. We also found that the ion plasma viscosity becomes negligible compared with the electron plasma viscosity when M{sub p}>1.5. In this case, the poloidal flow is damped by electron collisions rather than ion collisions.

Seol, J. [National Fusion Research Institute, Gwahangno 113, Yuseong-gu, Daejeon 305-333 (Korea, Republic of); Shaing, K. C. [Institute for Space, Astrophysical and Plasma Sciences, National Cheng Kung University, Tainan 70101, Taiwan and Engineering Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (United States)

2013-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" from the National Library of EnergyBeta (NLEBeta).
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361

Synthesis of cumulenes  

E-Print Network (OSTI)

6 ($) 6 6 C H /Cn-OCH5 ' ~c=c=c=c, ' C, H, Stannous chloride in acidic anhydrous ether gave negligible results. However, to reduce 1, 1, 4, 4- tetrapheny1-1, 4. -dihydroxy-2-butyne to the 1, 1, 4, 4- tetraphenylbutatriene, stannous chloride..., (4) formed a compound believed to be the dimer (5). l-OCH6 C H POCH6 Hi C ? C S sc 66CCCrC& 6 hv C66 ~ [ 66 ChH6 Ch H6 C6H6 C ? C, , ~C6H6 (4) H CO ( C6H6 This dimer was also obtained in a small amount as a by- product from the preparation...

Adam, Klaus

1967-01-01T23:59:59.000Z

362

Electromagnetic stabilization of tokamak microturbulence in a high-$\\beta$ regime  

E-Print Network (OSTI)

The impact of electromagnetic stabilization and flow shear stabilization on ITG turbulence is investigated. Analysis of a low-$\\beta$ JET L-mode discharge illustrates the relation between ITG stabilization, and proximity to the electromagnetic instability threshold. This threshold is reduced by suprathermal pressure gradients, highlighting the effectiveness of fast ions in ITG stabilization. Extensive linear and nonlinear gyrokinetic simulations are then carried out for the high-$\\beta$ JET hybrid discharge 75225, at two separate locations at inner and outer radii. It is found that at the inner radius, nonlinear electromagnetic stabilization is dominant, and is critical for achieving simulated heat fluxes in agreement with the experiment. The enhancement of this effect by suprathermal pressure also remains significant. It is also found that flow shear stabilization is not effective at the inner radii. However, at outer radii the situation is reversed. Electromagnetic stabilization is negligible while the flow...

Citrin, J; Goerler, T; Jenko, F; Mantica, P; Told, D; Bourdelle, C; Hatch, D R; Hogeweij, G M D; Johnson, T; Pueschel, M J; Schneider, M

2014-01-01T23:59:59.000Z

363

Quantum hacking: Experimental demonstration of time-shift attack against practical quantum-key-distribution systems  

Science Journals Connector (OSTI)

Quantum-key-distribution (QKD) systems can send quantum signals over more than 100km standard optical fiber and are widely believed to be secure. Here, we show experimentally a technologically feasible attack—namely, the time-shift attack—against a commercial QKD system. Our result shows that, contrary to popular belief, an eavesdropper, Eve, has a non-negligible probability (?4%) to break the security of the system. Eve’s success is due to the well-known detection efficiency loophole in the experimental testing of Bell’s inequalities. Therefore, the detection efficiency loophole plays a key role not only in fundamental physics, but also in technological applications such as QKD systems.

Yi Zhao; Chi-Hang Fred Fung; Bing Qi; Christine Chen; Hoi-Kwong Lo

2008-10-28T23:59:59.000Z

364

On the implications of the Galactic aberration in proper motions for celestial reference frame  

E-Print Network (OSTI)

During the last years, much attention has been paid to the astrometric implications of the galactic aberration in proper motions (GA). This effect causes systematic errors in astrometric measurements at a microarcsecond level. Some authors consider it so serious that it requires redefinition of the celestial reference system (CRF). We argue that such attention to the GA is too much exaggerated. It is just a small astrometric correction that must be taken into account during highly accurate astrometric and geodetic data processing. The accuracy of this correction depends on accuracy of the Galactic rotation parameters and, for most application, on the accuracy of the rotation matrix between Galactic and equatorial systems. Our analysis has shown that our today knowledge of these two factors is sufficient to compute the GA correction with accuracy of better than 10%. The remaining effect at a level of few tenths microarcsecond/yr is negligible nowadays. Another consequence of introducing the GA correction is ne...

Malkin, Zinovy

2014-01-01T23:59:59.000Z

365

On the role of ? in gravitational lensing  

Science Journals Connector (OSTI)

The cosmological constant ? affects gravitational lensing phenomena. Related effect can be studied in the framework of the Schwarzschild?de Sitter space?time in the weak deflection limit. The main contribution of ? can be accounted for by a proper use of angular diameter distances. For near lenses and static observers unresolved images are slightly de?magnified the radius of the Einstein ring decreases and the time delay increases. The effect is however negligible. Two novel contributions which show up in a cosmological context are also discussed. First a term ????=?2mb?/3 has to be added to the bending angle where m is the lens mass and b the impact parameter. Second ? brings about a difference in the redshifts of multiple images. Both effects are quite small for real astrophysical systems ??? ? ?0.1?? arcsec and ?z s ?10 ?7 .

Mauro Sereno

2010-01-01T23:59:59.000Z

366

Random-energy model: An exactly solvable model of disordered systems  

Science Journals Connector (OSTI)

A simple model of disordered systems—the random-energy model—is introduced and solved. This model is the limit of a family of disordered models, when the correlations between the energy levels become negligible. The model exhibits a phase transition and the low-temperature phase is completely frozen. The corrections to the thermodynamic limit are discussed in detail. The magnetic properties are studied, and a constant susceptibility is found at low temperature. The phase diagram in the presence of ferromagnetic pair interactions is described. Many results are qualitatively the same as those of the Sherrington-Kirkpatrick model. The problem of using the replica method is analyzed. Lastly, this random-energy model provides lower bounds for the ground-state energy of a large class of spin-glass models.

Bernard Derrida

1981-09-01T23:59:59.000Z

367

Anaerobic bioflocculation of wool scouring effluent  

Science Journals Connector (OSTI)

A two-stage anaerobic bioflocculation process (ABP) successfully flocculated a high grease (> 15 g/l) wool scouring effluent (WSE). During 110 days of continuous operation, a two-stage laboratory process removed between 70 and 90% grease and 60–86% COD at a combined hydraulic residence time (HRT) of 4–10 days. Grease removal was more difficult with low grease (<10 g/l) WSE. At a HRT of 3 days a single-stage ABP removed 40 and 44% grease at 20 and 37°C, respectively. Methane production and volatile fatty acids consumption were negligible. Most of the grease was removed by flocculation as a result of anaerobic bacterial activity. The supernatant was successfully treated by an aerobic activated sludge process reducing grease concentration from about 1.5 to less than 0.1 g/l in the final effluent at an HRT of 3 days.

Wipa Lapsirikul; Ralf Cord-Ruwisch; Goen Ho

1994-01-01T23:59:59.000Z

368

Pondermotive Instabilities and Microphinics - A Tutorial  

SciTech Connect

Phase and amplitude stabilization of the fields in superconducting cavities in the presence of ponderomotive effects and microphonics was one of the major challenges that had to be surmounted in order to make superconducting rf accelerators practical. This was of particular concern in low-velocity proton and ion accelerators since the beam loading was often negligible, but was usually not relevant in electron accelerators since the beam loading was often high and the gradients low. More recent or future applications of electron linacs--for example JLab upgrade, energy recovering linacs (ERLs)--will operate at increasingly higher gradients with little beam loading, and the issues associated with microphonics and ponderomotive instabilities will again become relevant areas of research. This paper will describe the ponderomotive instabilities and the conditions under which they can occur, and review the methods by which they, and microphonics, can be overcome.

Jean Delayen

2005-07-10T23:59:59.000Z

369

Overlay compatibility between two synchroton radiation steppers  

Science Journals Connector (OSTI)

A total overlay accuracy of less than 35 nm was obtained with two synchrotron radiation (SR) x-ray steppers developed by NTT and ASET. This value includes the pattern placement errors of two masks errors due to the wafer etching process and errors of two steppers that arise in exposure. The error factors affecting the overlay compatibility among SR x-ray steppers were analyzed using double-exposure experiments. The results show that the overlay error induced by the difference in runout between the two steppers was negligibly small and that the magnification change from shot to shot was caused by gap setting variations between the two steppers. These results demonstrate that a SR x-ray stepper can provide sufficient overlay compatibility for the 100 nm technical node and beyond.

Makoto Fukuda; Masanori Suzuki; Tsuneyuki Haga; Hirofumi Morita; Hajime Aoyama; Souichirou Mitsui; Takao Taguchi; Yasuji Matsui

2000-01-01T23:59:59.000Z

370

Structure of the Neutron  

Science Journals Connector (OSTI)

In an earlier paper, the contribution of the meson current to the electromagnetic structure of the nucleon was calculated by use of the dispersion relations for pion-nucleon scattering. Here the contribution of the nucleon current to the electromagnetic structure of the neutron is obtained analogously by use of the dispersion relations for neutron-proton scattering. Only the contribution from the one-pion and two-pion states of nucleon-nucleon scattering is considered. It is found that both states reduce the neutron-electron potential, i.e., leads to a smaller charge radius of the neutron. The contribution from the deuteron state is shown to be negligible. The resulting mean-square radii of the neutron, including the contributions of both meson and nucleon current, are (0.23×10-13cm)2 for the charge distribution and (0.41×10-13cm)2 for the magnetic moment distribution with f2=0.08.

Katsumi Tanaka

1959-01-15T23:59:59.000Z

371

Plasma-enriched chemical vapor deposition of silicon nitride on silicon carbide fibers  

SciTech Connect

Near stoichiometric Si:N coatings were deposited by means of PECVD on SCS-6 SiC fibers which contained a carbon-rich coating. Weight loss associated with oxidation of the outer carbon-rich coating of the as-received SiC fibers was greatly reduced for the Si:N coated SiC fibers even after 10 h heat-treatment in oxygen at 800{degrees}C. Auger Electron Spectroscopy (AES) was used to obtain elemental compositions of the as-received and Si:N coated SiC fibers after heat-treatment. Negligible amounts of oxygen were found at the carbon-rich coating of the heat-treated Si:N coated SiC fiber. These results clearly prove the effectiveness of PECVD silicon nitride coating as an oxygen diffusion barrier.

Stinespring, C.D.; Collazos, D.F.; Gupta, R.K. [West Virginia Univ., Morgantown, WV (United States)] [and others

1994-12-31T23:59:59.000Z

372

Energy level alignment at the methylammonium lead iodide/copper phthalocyanine interface  

SciTech Connect

The energy level alignment at the CH{sub 3}NH{sub 3}PbI{sub 3}/copper phthalocyanine (CuPc) interface is investigated by X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS). XPS reveal a 0.3 eV downward band bending in the CuPc film. UPS validate this finding and further reveal negligible interfacial dipole formation – verifying the viability of vacuum level alignment. The highest occupied molecular orbital of CuPc is found to be closer to the Fermi level than the valance band maximum of CH{sub 3}NH{sub 3}PbI{sub 3}, facilitating hole transfer from CH{sub 3}NH{sub 3}PbI{sub 3} to CuPc. However, subsequent hole extraction from CuPc may be impeded by the downward band bending in the CuPc layer.

Chen, Shi; Goh, Teck Wee; Sum, Tze Chien, E-mail: Alfred@ntu.edu.sg, E-mail: Tzechien@ntu.edu.sg [Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore); Sabba, Dharani; Chua, Julianto; Mathews, Nripan [Energy Research Institute @NTU (ERI-N), Research Techno Plaza, X-Frontier Block, Level 5, 50 Nanyang Drive, Singapore 637553 (Singapore); School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798 (Singapore); Huan, Cheng Hon Alfred, E-mail: Alfred@ntu.edu.sg, E-mail: Tzechien@ntu.edu.sg [Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore); Institute of High Performance Computing, 1 Fusionopolis Way, #16–16 Connexis, Singapore 138632 (Singapore)

2014-08-01T23:59:59.000Z

373

A bridge-functional-based classical mapping method for predicting the correlation functions of uniform electron gases at finite temperature  

SciTech Connect

Efficient and accurate prediction of the correlation functions of uniform electron gases is of great importance for both practical and theoretical applications. This paper presents a bridge-functional-based classical mapping method for calculating the correlation functions of uniform spin-unpolarized electron gases at finite temperature. The bridge functional is formulated by following Rosenfeld's universality ansatz in combination with the modified fundamental measure theory. The theoretical predictions are in good agreement with recent quantum Monte Carlo results but with negligible computational cost, and the accuracy is better than a previous attempt based on the hypernetted-chain approximation. We find that the classical mapping method is most accurate if the effective mass of electrons increases as the density falls.

Liu, Yu; Wu, Jianzhong, E-mail: jwu@engr.ucr.edu [Department of Chemical and Environmental Engineering and Department of Mathematics, University of California, Riverside, California 92521 (United States)] [Department of Chemical and Environmental Engineering and Department of Mathematics, University of California, Riverside, California 92521 (United States)

2014-02-28T23:59:59.000Z

374

Magnetic moments of octet baryons at finite density and temperature  

E-Print Network (OSTI)

We investigate the change of magnetic moments of octet baryons in nuclear matter at a finite density and temperature. Quark-meson coupling models are employed in describing properties of octet baryons and their interactions. Magnetic moments of octet baryons are found to increase non-negligibly as density and temperature increase, and we find that temperature dependence can be strongly correlated with the quark-hadron phase transition. Model dependence is also examined by comparing the results from the quark-meson coupling (QMC) model to those by the modified QMC (MQMC) model where the bag constant is assumed to depend on density. Both models predict sizable dependence on density and temperature, but the MQMC model shows a more drastic change of magnetic moments. Feasible changes of the nucleon mass by strong magnetic fields are also reported in the given models.

C. Y. Ryu; C. H. Hyun; M. -K. Cheoun

2010-08-12T23:59:59.000Z

375

ADVANCED HEAT EXCHANGERS USING TUNABLE NANOSCALE-MOLECULAR ASSEMBLY  

SciTech Connect

Steam condensation heat transfer on smooth horizontal tubes and enhanced tubes (TURBO-CDI and TURBO-CSL) along with nanoscale hydrophobic coated tubes was studied experimentally. Hydrophobic coatings have been created through self-assembled mono layers (SAMs) on copper alloy (99.9% Cu, 0.1% P) surfaces to enhance steam condensation through dropwise condensation. In general, a SAM system with a long-chain, hydrophobic group is nano-resistant, meaning that such a system forms a protective hydrophobic layer with negligible heat transfer resistance but a much stronger bond. When compared to complete filmwise condensation, the SAM coating on a plain tube increased the condensation heat transfer rate by a factor of 3 for copper alloy surfaces, under vacuum pressure (33.86 kPa) and by a factor of about 8 times when operated at atmospheric pressure (101 kPa). Lifetime of maintaining dropwise condensation is greatly dependent on the processing conditions.

Kwang J. Kim; Thomas W. Bell; Srinivas Vemuri; Sailaja Govindaraju

2004-01-01T23:59:59.000Z

376

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000  

SciTech Connect

Pacific Northwest National Laboratory (PNNL) established an area monitoring dosimeter program in accordance with Article 514 of the Department of Energy (DOE) Radiological Control Manual (RCM) in January 1993. This program is to minimize the number of areas requiring issuance of personnel dosimeters and to demonstrate that doses outside Radiological Buffer Areas are negligible. In accordance with 10 CFR Part 835.402 (a) (1)-(4) and Article 511.1 of the DOE Standard Radiological Control, personnel dosimetry shall be provided to 1) radiological workers who are likely to receive at least 100 mrem annually, and 2) declared pregnant workers, minors, and members of the public who are likely to receive at least 50 mrem annually. Program results for calendar years 1993-2000 confirm that personnel dosimetry is not needed for individuals located in areas monitored by the program.

Bivins, Steven R.; Stoetzel, Gregory A.

2001-07-05T23:59:59.000Z

377

Hybrid Inflation Exit through Tunneling  

E-Print Network (OSTI)

For hybrid inflationary potentials, we derive the tunneling rate from field configurations along the flat direction towards the waterfall regime. This process competes with the classically rolling evolution of the scalar fields and needs to be strongly subdominant for phenomenologically viable models. Tunneling may exclude models with a mass scale below 10^12 GeV, but can be suppressed by small values of the coupling constants. We find that tunneling is negligible for those models, which do not require fine tuning in order to cancel radiative corrections, in particular for GUT-scale SUSY inflation. In contrast, electroweak scale hybrid inflation is not viable, unless the inflaton-waterfall field coupling is smaller than approximately 10^-11.

Bjorn Garbrecht; Thomas Konstandin

2006-10-24T23:59:59.000Z

378

Suppression of star formation in early-type galaxies by feedback from supermassive black holes  

E-Print Network (OSTI)

Detailed high-resolution observations of the innermost regions of nearby galaxies have revealed the presence of supermassive black holes1. These black holes may interact with their host galaxies by means of 'feedback' in the form of energy and material jets; this feedback affects the evolution of the host and gives rise to observed relations between the black hole and the host. Here we report observations of the ultraviolet emissions of massive early-type galaxies. We derive an empirical relation for a critical black-hole mass (as a function of velocity dispersion) above which the outflows from these black holes suppress star formation in their hosts by heating and expelling all available cold gas. Supermassive black holes are negligible in mass compared to their hosts but nevertheless seem to play a critical role in the star formation history of galaxies.

Kevin Schawinski; Sadegh Khochfar; Sugata Kaviraj; Sukyoung K. Yi; Alessandro Boselli; Tom Barlow; Tim Conrow; Karl Forster; Peter G. Friedman; D. Chris Martin; Patrick Morrissey; Susan Neff; David Schiminovich; Mark Seibert; Todd Small; Ted K. Wyder; Luciana Bianchi; Jose Donas; Tim Heckman; Young-Wook Lee; Barry Madore; Bruno Milliard; R. Michael Rich; Alex Szalay

2006-08-24T23:59:59.000Z

379

Heating and Ionization of the Primordial Intergalactic Medium by High Mass X-ray Binaries  

E-Print Network (OSTI)

We investigate the influence of High Mass X-ray Binaries on their high redshift environments. Using a one-dimensional radiative transfer code, we predict the ionization and temperature profiles surrounding a coeval stellar population, composed of main sequence stars and HMXBs, at various times after its formation. We consider both uniform density surroundings, and a cluster embedded in a 10^8 solar mass NFW halo. HMXBs in a constant density environment produce negligible enhanced ionization because of their high-energy SEDs and short lifetimes. In this case, HMXBs only marginally contribute to the local heating rate. For NFW profiles, radiation from main sequence stars cannot prevent the initially ionized volume from recombining since it is unable to penetrate the high density galactic core. However, HMXB photons stall recombinations behind the front, keeping it partially ionized for longer. The increased electron density in these partially ionized regions promotes further cooling, resulting in lower IGM temp...

Knevitt, Gillian; Power, Chris; Bolton, James

2014-01-01T23:59:59.000Z

380

First measurement of the 14N(p,gamma)15O cross section down to 70 keV  

E-Print Network (OSTI)

In stars with temperatures above 20*10^6 K, hydrogen burning is dominated by the CNO cycle. Its rate is determined by the slowest process, the 14N(p,gamma)15O reaction. Deep underground in Italy's Gran Sasso laboratory, at the LUNA 400 kV accelerator, the cross section of this reaction has been measured at energies much lower than ever achieved before. Using a windowless gas target and a 4pi BGO summing detector, direct cross section data has been obtained down to 70 keV, reaching a value of 0.24 picobarn. The Gamow peak has been covered by experimental data for several scenarios of stable and explosive hydrogen burning. In addition, the strength of the 259 keV resonance has been remeasured. The thermonuclear reaction rate has been calculated for temperatures 90 - 300 *10^6 K, for the first time with negligible impact from extrapolations.

A. Lemut; D. Bemmerer; F. Confortola; R. Bonetti; C. Broggini; P. Corvisiero; H. Costantini; J. Cruz; A. Formicola; Zs. Fulop; G. Gervino; A. Guglielmetti; C. Gustavino; Gy. Gyurky; G. Imbriani; A. P. Jesus; M. Junker; B. Limata; R. Menegazzo; P. Prati; V. Roca; D. Rogalla; C. Rolfs; M. Romano; C. Rossi Alvarez; F. Schumann; E. Somorjai; O. Straniero; F. Strieder; F. Terrasi; H. P. Trautvetter

2006-02-09T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" 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

Complete population transfer in a three-state quantum system by a train of pairs of coincident pulses  

E-Print Network (OSTI)

A technique for complete population transfer between the two end states $\\ket{1}$ and $\\ket{3}$ of a three-state quantum system with a train of $N$ pairs of resonant and coincident pump and Stokes pulses is introduced. A simple analytic formula is derived for the ratios of the pulse amplitudes in each pair for which the maximum transient population $P_2(t)$ of the middle state $\\ket{2}$ is minimized, $P_2^{\\max}=\\sin^2(\\pi/4N)$. It is remarkable that, even though the pulses are on exact resonance, $P_2(t)$ is damped to negligibly small values even for a small number of pulse pairs. The population dynamics resembles generalized $\\pi$-pulses for small $N$ and stimulated Raman adiabatic passage for large $N$ and therefore this technique can be viewed as a bridge between these well-known techniques.

Andon A. Rangelov; Nikolay V. Vitanov

2012-01-04T23:59:59.000Z

382

Lifetime of micrometer-sized drops of oil pressed by buoyancy against a planar interface  

E-Print Network (OSTI)

Emulsion Stability Simulations (ESS) are used to estimate the coalescence time of one drop of hexadecane pressed by buoyancy against a planar water/hexadecane interface. In the present simulations the homophase is represented by a big drop of oil at least 500 times larger than the approaching drop ($1\\,\\mu$m to $10\\,\\mu$m). Both deformable and non-deformable drops are considered along with six different diffusion tensors. In each case van der Waals, electrostatic, steric and buoyancy forces are taken into account. The coalescence times are estimated as the average of 1000 random walks. It is found that the repulsive potential barrier has a significant influence in the results. The experimental data can only be reproduced assuming negligible repulsive barriers, as well as non-deformable drops that move with a combination of Stokes and Taylor tensors as they approach the interface.

Clara Rojas; German Urbina-Villalba; Maximo Garcia-Sucre

2010-01-13T23:59:59.000Z

383

Phase, Dielectric and Ferroelectric Properties of Microwave Sintered La and Ca Modified BaTiO{sub 3} Ceramics  

SciTech Connect

Lanthanum and calcium modified barium titanate, Ba{sub (1-x)}La{sub x}Ti{sub (1-x/4)}O{sub 3}/BLT and Ba({sub 1-x})Ca{sub x}TiO{sub 3}/BCT, where x = 0.02, ferroelectric ceramic samples were synthesized in single perovskite phase by microwave processing technique. Sintering temperature was optimized at 1100 deg. C for 1h. Presence of pore free micron size uniform grains suggested the advantage of using microwave sintering process. Transition temperature (T{sub c}) decreases with the substitution of La content in BT system. Temperature coefficient of capacitance is negligible from RT temperature to 75 deg. C for BLT ceramic samples. Polarization vs. electric field (P-E) hysteresis loop study confirms the ferroelectric nature of the modified BT ceramic samples.

Sonia, S.; Patel, R. K. [Department of Chemistry, National Institute of Technology, Rourkela - 769008 (India); Kumar, P. [Department of Physics, National Institute of Technology, Rourkela - 769008 (India); Prakash, Chandra [Directorate of IE and IPR, DRDO, DRDO Bhawan, New Delhi-110105 (India); Agrawal, D. K. [Materials Research Laboratory, Pennsylvania State University, University Park, PA 16802 (United States)

2011-11-22T23:59:59.000Z

384

Study of space charge compensation phenomena in charged particle beams  

SciTech Connect

The propagation of a charged particle beam is accompanied by the production of secondary particles created in the interaction of the beam itself with the background gas flowing in the accelerator tube. In the drift region, where the electric field of the electrodes is negligible, secondary particles may accumulate giving a plasma which shields the self-induced potential of the charged beam. This phenomenon, known as space charge compensation is a typical issue in accelerator physics, where it is usually addressed by means of 1D radial transport codes or Monte Carlo codes. The present paper describes some theoretical studies on this phenomenon, presenting a Particle in Cell-Monte Carlo (PIC-MC) Code developed ad hoc where both radial and axial confinements of secondary particles are calculated. The features of the model, offering a new insight on the problem, are described and some results discussed.

Veltri, P.; Serianni, G. [Consorzio RFX, C.so Stati Uniti 4, 35100 Padova (Italy); Cavenago, M. [INFN-LNL, Viale dell'Universita 2, 35020 Legnaro (Italy)

2012-02-15T23:59:59.000Z

385

S17 near Zero Energy in a Direct Radiative Capture Analysis  

E-Print Network (OSTI)

S17 near zero energy was calculated without using the effective expansion of the S factor or the asymptotic wave functions. Variations of the nuclear potential parameters scarcely affect the d-wave capture cross section below 0.1 MeV, but the s-wave capture cross section near zero energy is affected strongly by the shape of the nuclear potential in our calculations. This result is contrary to the existing assumption that the value of the S factor near zero energy depends on the asymptotic wave function (or asymptotic normalization coefficient). We showed that although the s-wave contribution is dominant near zero energy, the d-wave contribution is not negligible.

Kyung Hoon Kim

2011-10-23T23:59:59.000Z

386

Non-adiabatic perturbations in decaying vacuum cosmology  

SciTech Connect

We investigate a spatially flat Friedmann-Lemaître-Robertson-Walker cosmology in which a decaying vacuum term causes matter production at late times. Assuming a decay proportional to the Hubble rate, the ratio of the background energy densities of dark matter and dark energy changes with the cosmic scale factor as a{sup ?3/2}. The intrinsically non-adiabatic two-component perturbation dynamics of this model is reduced to a single second-order equation. Perturbations of the vacuum term are shown to be negligible on scales that are relevant for structure formation. On larger scales, dark-energy perturbations give a somewhat higher contribution but remain always smaller than the dark-matter perturbations.

Zimdahl, W.; Fabris, J.C. [Departamento de Física, Universidade Federal do Espírito Santo, Vitória, ES (Brazil); Borges, H.A.; Carneiro, S. [Instituto de Física, Universidade Federal da Bahia, Salvador, BA (Brazil); Hipólito-Ricaldi, W.S., E-mail: winfried.zimdahl@pq.cnpq.br, E-mail: humberto@ufba.br, E-mail: saulo.carneiro@pq.cnpq.br, E-mail: fabris@pq.cnpq.br, E-mail: whipolito@gmail.com [Departamento de Ciências Matemáticas e Naturais, UFES, São Mateus, ES (Brazil)

2011-04-01T23:59:59.000Z

387

Study of microwave/gamma-ray properties for Fermi-LAT bright AGNs  

E-Print Network (OSTI)

Blazars are a small fraction of all extragalactic sources but, unlike other objects, they are strong emitters across the entire electromagnetic spectrum. Recent data in the microwave region of the electromagnetic spectrum have become available to allow for systematic studies of blazars over large cosmological volumes. This frequency band is indeed particularly suited for the selection of blazars since at these frequencies the contamination from radio extended components with steep spectra is no longer present and the emission from the accretion process is negligible. During the first 3 months of scientific operations Fermi-LAT detected 106 bright, high-galactic latitude (| b |> 10 deg) AGNs with high significance. In this study we investigate the possible relations between the microwave and the gamma-ray emissions for Fermi-LAT detected AGNs belonging to WMAP 5th year bright source catalog.

Gasparrini, D; Giommi, P; Pittori, C; Colafrancesco, S

2009-01-01T23:59:59.000Z

388

Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes  

SciTech Connect

Astrophysical fluids may acquire nonzero electrical charge because of strong irradiation or charge separation in a magnetic field. In this case, electromagnetic and gravitational forces may act together and produce new equilibrium configurations, which are different from the uncharged ones. Following our previous studies of charged test particles and uncharged perfect fluid tori encircling compact objects, we introduce here a simple test model of a charged perfect fluid torus in strong gravitational and electromagnetic fields. In contrast to ideal magnetohydrodynamic models, we consider here the opposite limit of negligible conductivity, where the charges are tied completely to the moving matter. This is an extreme limiting case which can provide a useful reference against which to compare subsequent more complicated astrophysically motivated calculations. To clearly demonstrate the features of our model, we construct three-dimensional axisymmetric charged toroidal configurations around Reissner-Nordstroem black holes and compare them with equivalent configurations of electrically neutral tori.

Kovar, Jiri; Slany, Petr; Stuchlik, Zdenek; Karas, Vladimir; Cremaschini, Claudio; Miller, John C. [Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava Bezrucovo nam. 13, CZ-74601 Opava (Czech Republic); Astronomical Institute, Academy of Sciences, Bocni II, CZ-14131 Prague (Czech Republic); SISSA and INFN, Via Bonomea 265, I-34136 Trieste (Italy); SISSA and INFN, Via Bonomea 265, I-34136 Trieste, Italy and Department of Physics (Astrophysics), University of Oxford, Keble Road, Oxford OX1 3RH (United Kingdom)

2011-10-15T23:59:59.000Z

389

Low-Z Shell Pellet Experiments on DIII-D  

SciTech Connect

Small (o.d. = 1.8 mm, t = 0.37 mm) polystyrene shells filled with either pressurized argon gas or boron powder have been fired into DIII-D plasmas for disruption mitigation experiments. The pellet shells were observed to burn up at rhoapprox =0.5, roughly consistent with ablation rate calculations. Pellet slowing from 350 m/s down to 100 m/s was observed, which is not well-understood at present. Negligible plasma current contraction or MHD onset were seen as a result of the shell burn-up in the plasma edge, consistent with calculations. The pellet payloads were observed to ionize rapidly in the pellet vicinity (<1 cm radius) and rapid (<15 ms) mixing through the plasma core was observed.

Hollmann, E. M.; Yu, J. H. [University of California-San Diego, La Jolla, CA, 92093-0417 (United States); James, A. N.; Parks, P. B.; Evans, T. E.; Humphreys, D. A.; Jackson, G. L.; La Haye, R. J.; Strait, E. J.; West, W. P.; Wu, W. [General Atomics, PO Box 85608, San Diego, CA 92186-5608 (United States); Jernigan, T. C. [Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, TN 37831 (United States)

2009-09-10T23:59:59.000Z

390

Effects of Nb doping level on the electronic transport, photoelectric effect and magnetoresistance across La{sub 0.5}Ca{sub 0.5}MnO{sub 3}/Nb:SrTiO{sub 3} junctions  

SciTech Connect

Heterojunctions composed of La{sub 0.5}Ca{sub 0.5}MnO{sub 3} and Nb doped SrTiO{sub 3} were fabricated, and the effects of the Nb doping level on their electronic transport, photoelectric effect, and magnetoresistance were investigated. A lower doping concentration of Nb led to better rectifying properties and higher open circuit voltages. The I-V curves for La{sub 0.5}Ca{sub 0.5}MnO{sub 3}/0.7?wt.?% Nb-SrTiO{sub 3} showed a negligible response to magnetic fields for all temperatures, whereas La{sub 0.5}Ca{sub 0.5}MnO{sub 3}/0.05?wt.?% Nb-SrTiO{sub 3} exhibited distinct magnetoresistance, which depended on both the bias voltage and temperature. These results are discussed with the assistance of conventional semiconductor theories.

Wang, J. F., E-mail: jifewang@gmail.com [Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong); College of Science, China Jiliang University, Hangzhou, Zhejiang 310018 (China); Jiang, Y. C.; Gao, J., E-mail: jugao@hku.hk [Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong); Chen, M. G. [College of Science, China Jiliang University, Hangzhou, Zhejiang 310018 (China)] [College of Science, China Jiliang University, Hangzhou, Zhejiang 310018 (China)

2013-12-16T23:59:59.000Z

391

Direct deposition of aluminum oxide gate dielectric on graphene channel using nitrogen plasma treatment  

SciTech Connect

Deposition of high-quality dielectric on a graphene channel is an essential technology to overcome structural constraints for the development of nano-electronic devices. In this study, we investigated a method for directly depositing aluminum oxide (Al{sub 2}O{sub 3}) on a graphene channel through nitrogen plasma treatment. The deposited Al{sub 2}O{sub 3} thin film on graphene demonstrated excellent dielectric properties with negligible charge trapping and de-trapping in the gate insulator. A top-gate-structural graphene transistor was fabricated using Al{sub 2}O{sub 3} as the gate dielectric with nitrogen plasma treatment on graphene channel region, and exhibited p-type transistor characteristics.

Lim, Taekyung; Kim, Dongchool; Ju, Sanghyun [Department of Physics, Kyonggi University, Suwon, Gyeonggi-Do 443-760 (Korea, Republic of)

2013-07-01T23:59:59.000Z

392

Diamond as an inert substrate of graphene  

SciTech Connect

Interaction between graphene and semiconducting diamond substrate has been examined with large-scale density functional theory calculations. Clean and hydrogenated diamond (100) and (111) surfaces have been studied. It turns out that weak van der Waals interactions dominate for graphene on all these surfaces. High carrier mobility of graphene is almost not affected, except for a negligible energy gap opening at the Dirac point. No charge transfer between graphene and diamond (100) surfaces is detected, while different charge-transfer complexes are formed between graphene and diamond (111) surfaces, inducing either p-type or n-type doping on graphene. Therefore, diamond can be used as an excellent substrate of graphene, which almost keeps its electronic structures at the same time providing the flexibility of charge doping.

Hu Wei; Li Zhenyu; Yang Jinlong [Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China)

2013-02-07T23:59:59.000Z

393

Ion Charge States in the Fast Solar Wind: New Data Analysis and Theoretical Refinements  

E-Print Network (OSTI)

We present a further investigation into the increased ionization observed in element charge states in the fast solar wind compared to its coronal hole source regions. Once ions begin to be perpendicularly heated by ion cyclotron waves and execute large gyro-orbits, density gradients in the flow can excite lower hybrid waves that then damp by heating electrons in the parallel direction. We give further analysis of charge state data from polar coronal holes at solar minimum and maximum, and also from equatorial coronal holes. We also consider further the damping of lower hybrid waves by ions and the effect of non-Maxwellian electron distribution functions on the degree of increased ionization, both of which appear to be negligible for the solar wind case considered here. We also suggest that the density gradients required to heat electrons sufficiently to further ionize the solar wind can plausibly result from the turbulent cascade of MHD waves.

J. Martin Laming; Susan T. Lepri

2007-02-05T23:59:59.000Z

394

Ion Charge States in the Fast Solar Wind: New Data Analysis and Theoretical Refinements  

E-Print Network (OSTI)

We present a further investigation into the increased ionization observed in element charge states in the fast solar wind compared to its coronal hole source regions. Once ions begin to be perpendicularly heated by ion cyclotron waves and execute large gyro-orbits, density gradients in the flow can excite lower hybrid waves that then damp by heating electrons in the parallel direction. We give further analysis of charge state data from polar coronal holes at solar minimum and maximum, and also from equatorial coronal holes. We also consider further the damping of lower hybrid waves by ions and the effect of non-Maxwellian electron distribution functions on the degree of increased ionization, both of which appear to be negligible for the solar wind case considered here. We also suggest that the density gradients required to heat electrons sufficiently to further ionize the solar wind can plausibly result from the turbulent cascade of MHD waves.

Laming, J Martin; 10.1086/513505

2009-01-01T23:59:59.000Z

395

A model for the optical high state light curve of AM Herculis  

E-Print Network (OSTI)

We present a simple quantitative model that can describe the photometric B and V band light curves of AM Herculis obtained during a high state. The double-humped shape of the V band light curve is dominated by cyclotron emission from a region at the main accreting pole with an area of ~5x10e16 cm^2 and sustaining an inflow of ~0.06 g/cm^2/s. The almost unmodulated B band is dominated by emission from the accretion stream. The contribution of the heated white dwarf to the optical emission is small in the B band, but comparable to that of the accretion stream in the V band. The emission of the secondary star is negligible both in B and in V.

B. T. Gaensicke; A. Fischer; R. Silvotti; D. de Martino

2001-04-10T23:59:59.000Z

396

LIMB-DARKENED RADIATION-DRIVEN WINDS FROM MASSIVE STARS  

SciTech Connect

We calculated the influence of the limb-darkened finite-disk correction factor in the theory of radiation-driven winds from massive stars. We solved the one-dimensional m-CAK hydrodynamical equation of rotating radiation-driven winds for all three known solutions, i.e., fast, {Omega}-slow, and {delta}-slow. We found that for the fast solution, the mass-loss rate is increased by a factor of {approx}10%, while the terminal velocity is reduced about 10%, when compared with the solution using a finite-disk correction factor from a uniformly bright star. For the other two slow solutions, the changes are almost negligible. Although we found that the limb darkening has no effects on the wind-momentum-luminosity relationship, it would affect the calculation of synthetic line profiles and the derivation of accurate wind parameters.

Cure, M. [Departamento de Fisica y Astronomia, Facultad de Ciencias, Universidad de Valparaiso, Av. Gran Bretana 1111, Casilla 5030, Valparaiso (Chile); Cidale, L. [Departamento de Espectroscopia, Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata (UNLP), Paseo del Bosque S/N, 1900 La Plata (Argentina); Rial, D. F., E-mail: michel.cure@uv.cl, E-mail: lydia@fcaglp.unlp.edu.ar, E-mail: drial@dm.uba.ar [Departamento de Matematicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (Argentina)

2012-10-01T23:59:59.000Z

397

Photoelectron emission from LiF surfaces by ultrashort electromagnetic pulses  

SciTech Connect

Energy- and angle-resolved electron emission spectra produced by incidence of ultrashort electromagnetic pulses on a LiF(001) surface are studied by employing a distorted-wave method named the crystal surface-Volkov (CSV) approximation. The theory makes use of the Volkov phase to describe the action of the external electric field on the emitted electron, while the electron-surface interaction is represented within the tight-binding model. The CSV approach is applied to investigate the effects introduced by the crystal lattice when the electric field is oriented parallel to the surface plane. These effects are essentially governed by the vector potential of the external field, while the influence of the crystal orientation was found to be negligible.

Acuna, M. A. [Instituto de Astronomia y Fisica del Espacio, Consejo Nacional de Investigaciones Cientificas y Tecnicas, Universidad de Buenos Aires, Buenos Aires (Argentina); Gravielle, M. S. [Instituto de Astronomia y Fisica del Espacio, Consejo Nacional de Investigaciones Cientificas y Tecnicas, Universidad de Buenos Aires, Buenos Aires (Argentina); Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (Argentina)

2011-03-15T23:59:59.000Z

398

The Stiller-Smith Engine: Floating gear analysis  

SciTech Connect

The Stiller-Smith Engine employs a non-standard gear train and as such requires a closer examination of the design and sizing of the gears. To accomplish this the motion of the Stiller-Smith gear train is compared to more familiar arrangements. The results of a kinematic and dynamic analysis introduce the irregular forces that the gears are subjected to. The ''floating'' or ''trammel'' gear is examined more closely, first stochastically and then with finite element analysis. This pinpoints high stress concentrations on the gear and where they occur during the engine cycle. The configuration considered is an output shaft, negligible idler gear forces, and floating gear pins that are part of the connecting rods rather than the floating gear. Various loading techniques are discussed with possible ramifications of each.

Craven, R.; Smith, J.E.; Butler, S.

1987-01-01T23:59:59.000Z

399

Deviation of Stellar Orbits from Test Particle Trajectories around Sgr A* Due to Tides and Winds  

Science Journals Connector (OSTI)

Monitoring the orbits of stars around Sgr A* offers the possibility of detecting the precession of their orbital planes due to frame dragging, of measuring the spin and quadrupole moment of the black hole, and of testing the no-hair theorem. Here we investigate whether the deviations of stellar orbits from test-particle trajectories due to wind mass loss and tidal dissipation of the orbital energy compromise such measurements. We find that the effects of stellar winds are, in general, negligible. On the other hand, for the most eccentric orbits (e > 0.96) for which an optical interferometer, such as GRAVITY, will detect orbital plane precession due to frame dragging, the tidal dissipation of orbital energy occurs at timescales comparable to the timescale of precession due to the quadrupole moment of the black hole. As a result, this non-conservative effect is a potential source of systematic uncertainty in testing the no-hair theorem with stellar orbits.

Dimitrios Psaltis; Gongjie Li; Abraham Loeb

2013-01-01T23:59:59.000Z

400

Investigation of Wave Energy Converter Effects on Wave Fields: A Modeling Sensitivity Study in Monterey Bay CA.  

SciTech Connect

A n indust ry standard wave modeling tool was utilized to investigate model sensitivity to input parameters and wave energy converter ( WEC ) array deploym ent scenarios. Wave propagation was investigated d ownstream of the WECs to evaluate overall near - and far - field effects of WEC arrays. The sensitivity study illustrate d that b oth wave height and near - bottom orbital velocity we re subject to the largest pote ntial variations, each decreas ed in sensitivity as transmission coefficient increase d , as number and spacing of WEC devices decrease d , and as the deployment location move d offshore. Wave direction wa s affected consistently for all parameters and wave perio d was not affected (or negligibly affected) by varying model parameters or WEC configuration .

Roberts, Jesse D.; Grace Chang; Jason Magalen; Craig Jones

2014-08-01T23:59:59.000Z

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


401

Reference electrode for strong oxidizing acid solutions  

DOE Patents (OSTI)

A reference electrode for the measurement of the oxidation-reduction potentials of solutions is especially suitable for oxidizing solutions such as highly concentrated and fuming nitric acids, the solutions of nitrogen oxides, N.sub.2 O.sub.4 and N.sub.2 O.sub.5, in nitric acids. The reference electrode is fabricated of entirely inert materials, has a half cell of Pt/Ce(IV)/Ce(III)/70 wt. % HNO.sub.3, and includes a double-junction design with an intermediate solution of 70 wt. % HNO.sub.3. The liquid junctions are made from Corning No. 7930 glass for low resistance and negligible solution leakage.

Rigdon, Lester P. (Livermore, CA); Harrar, Jackson E. (Castro Valley, CA); Bullock, Sr., Jack C. (Pleasanton, CA); McGuire, Raymond R. (Brentwood, CA)

1990-01-01T23:59:59.000Z

402

Wall Adhesion and Constitutive Modelling of Strong Colloidal Gels  

E-Print Network (OSTI)

Wall adhesion effects during batch sedimentation of strongly flocculated colloidal gels are commonly assumed to be negligible. In this study in-situ measurements of colloidal gel rheology and solids volume fraction distribution suggest the contrary, where significant wall adhesion effects are observed in a 110mm diameter settling column. We develop and validate a mathematical model for the equilibrium stress state in the presence of wall adhesion under both viscoplastic and viscoelastic constitutive models. These formulations highlight fundamental issues regarding the constitutive modeling of colloidal gels, specifically the relative utility and validity of viscoplastic and viscoelastic rheological models under arbitrary tensorial loadings. The developed model is validated against experimental data, which points toward a novel method to estimate the shear and compressive yield strength of strongly flocculated colloidal gels from a series of equilibrium solids volume fraction profiles over various column widths.

Daniel R. Lester; Richard Buscall; Anthony D. Stickland; Peter J. Scales

2013-12-30T23:59:59.000Z

403

Hydrochemical features of a geothermal test well iin a volcanic caldera, MT. Pinatubo, Phillipines  

SciTech Connect

Mt. Pinatubo is one of several recent-age volcanoes along the west Luzon volcanic arc. A fumarole near the suminit emits gases with magmatic characteristics. Several thermal springs on the east and west flanks yield various fluid typos, including neutral chloride and bicarbonate. Three wellbores probed the Mt. Pinatubo caldera from elevations of +1230 through -1600 mRSL. Trajectories may be described as: central, crossing a boundary wall from the inside, and skirting a wall [probably] on the inside. Brine discharges indicate severe evapo-concentration effects accompanied by other phenomena. Severity of evapo-concentration indicates low fluid mobility near the wellbores. Large variations for ratios of component concentrations were observed, indicating negligible natural circulation (mixing). Implications about fluid movements and heat transfer processes are explored. Three components of steam can be quantified and all are significant: separate entry, adiabatic boiling, and boiling by rock heat.

Michels, D.E.; Clemente, V.C.; Ramos, M.N.

1991-01-01T23:59:59.000Z

404

Reluctance of a neutral nanoparticle to enter a charged pore  

E-Print Network (OSTI)

We consider the translocation of a neutral (uncharged) nanoparticle through a pore in a thin membrane with constant surface charge density. If the concomitant Debye screening layer is sufficiently thin, the resulting forces experienced by the particle on its way through the pore are negligible. But when the Debye length becomes comparable to the pore diameter, the particle encounters a quite significant potential barrier while approaching and entering the pore, and symmetrically upon exiting the pore. The main reason is an increasing pressure which acts on the particle when it intrudes into the counter ion cloud of the Debye screening layer. In case the polarizability of the particle is different (usually smaller) than that of the ambient fluid, a second, much smaller contribution to the potential barrier is due to self-energy effects. Our numerical treatment of the problem is complemented by analytical approximations for sufficiently long cylindrical particles and pores, which agree very well with the numerics.

Sebastian Getfert; Thomas Töws; Peter Reimann

2014-01-08T23:59:59.000Z

405

Three-body force effect on neutrino emissivities of neutron stars within the framework of the Brueckner-Hartree-Fock approach  

E-Print Network (OSTI)

The three-body force (TBF) effect on the neutrino emissivity in neutron star matter and the total neutrino emissivity of neutron stars have been investigated within the framework of the Brueckner-Hartree-Fock approach by adopting the AV18 two-body interaction plus a microscopic TBF. The neutrino emissivity from the direct Urca process turns out to be much larger than that from the modified Urca process. Inclusion of the TBF reduces strongly the density thresholds of the direct Urca processes involving electrons and muons. The TBF effect on the total neutrino emissivity of neutron stars is shown to be negligibly weak for neutron stars with small masses. For neutron stars with large masses, the TBF effect becomes visible and inclusion of the TBF may enhance the total neutrino emissivity by about 50% for neutron stars with a given mass of $M=1.6M_{\\odot}$.

Yin, Peng

2013-01-01T23:59:59.000Z

406

Method for reducing nitrogen oxides in combustion effluents  

DOE Patents (OSTI)

Method for reducing nitrogen oxides (NO.sub.x) in the gas stream from the combustion of fossil fuels is disclosed. In a narrow gas temperature zone, NO.sub.x is converted to nitrogen by reaction with urea or ammonia with negligible remaining ammonia and other reaction pollutants. Specially designed injectors are used to introduce air atomized water droplets containing dissolved urea or ammonia into the gaseous combustion products in a manner that widely disperses the droplets exclusively in the optimum reaction temperature zone. The injector operates in a manner that forms droplet of a size that results in their vaporization exclusively in this optimum NO.sub.x -urea/ammonia reaction temperature zone. Also disclosed is a design of a system to effectively accomplish this injection.

Zauderer, Bert (Merion Station, PA)

2000-01-01T23:59:59.000Z

407

Finite Element Modeling of Suspended Particle Migration in Non-Newtonian Fluids  

SciTech Connect

Shear-induced migration of particles is studied during the slow flow of suspensions of spheres (particle volume fraction {phi} = 0.50) in an inelastic but shear-thinning, suspending fluid in flow between counterrotating concentric cylinders, The conditions are such that nonhydrodynamic effects are negligible. The movement of particles away from the high shear rate region is more pronounced than in a Newtonian suspending liquid. We test a continuum constitutive model for the evolution of particle concentration in a flowing suspension proposed by Phillips et al. (1992) by using shear-thinning, suspending fluids. The fluid constitutive equation is Carreau-like in its shear-thinning behavior but also varies with the local particle concentration. The model is compared with the experimental data gathered with nuclear magnetic resonance (NMR) imaging.

Altobelli, S.; Baer, T.; Mondy, L.; Rao, R.; Stephens, T.

1999-03-04T23:59:59.000Z

408

An approach to predict tarmat breakdown in Minagish Reservoir in Kuwait  

SciTech Connect

Minagish Oolite reservoir, Minagish Field in Kuwait is characterized by tarmat presence at the oil-water contact. A water flooding project is planned for the reservoir. This paper discusses the possibility of tarmat break-down upon water injection below it. It was found that differential pressure at tarmat would be mainly due to water injection and that differential pressure due to oil production would be negligible. This paper suggests a technique to predict tarmat break-down time, response time at the nearest producer or observation well and the time at which water injection should be switched from below tarmat to above it. Also, the technique could be used to predict the differential pressure at tarmat anywhere in the reservoir.

Osman, M.E.

1983-03-01T23:59:59.000Z

409

Vacancy solution theory of adsorption from gas mixtures  

SciTech Connect

The new correlation based on vacancy-solution theory, reports Pennsylvania State University, improves predictions of gas-mixture adsorption equilibria from single-component adsorption isotherm data. The new method is more general, simpler to apply, and more accurate than other available models. For an adsorption system, the binary parameters - adsorbate and vacancy - are obtained from regression of the pure-gas adsorption data with the vacancy-solution isotherm equation. These parameters are then used to predict multicomponent adsorption equilibrium, assuming that the adsorbate-adsorbate interactions are negligible. Penn State has verified the new correlation on two different kinds of binary adsorption systems: mixtures of O/sub 2/, N/sub 2/, and CO on zeolite 10X and mixtures of light hydrocarbons on Nuxit-AL activated carbon.

Suwanayuen, S.; Danner, R.P.

1980-01-01T23:59:59.000Z

410

The simultaneous evaluation of the standards and other cross sections of importance for technology  

SciTech Connect

The simultaneous evaluation of the cross sections of {sup 6}Li(n,{alpha}), {sup 6}Li(n,n), {sup 10}B(n,{alpha}{sub 0}), {sup 10}B(n,{alpha}{sup 1}), {sup 10}B(n,n), {sup 197}Au(n,{gamma}), {sup 238}U(n,{gamma}), {sup 235}U(n,f), {sup 239}Pu(n,f), and {sup 238}U(n,f) and the thermal constants was part of the evaluation of these data for ENDF/B-VI The FORTRAN codes and the data files used for the simultaneous evaluation are documented in the present report. Corrections for some data reported in the literature and the addition of several new data sets results in negligible changes except for the fission cross sections where minor changes occur relative to the evaluation for ENDF/B-VI.

Poenitz, W.P.; Aumeier, S.E.

1997-09-01T23:59:59.000Z

411

Energy Momentum Pseudo-Tensor of Relic Gravitational Wave in Expanding Universe  

E-Print Network (OSTI)

We study the energy-momentum pseudo-tensor of gravitational wave, and examine the one introduced by Landau-Lifshitz for a general gravitational field and the effective one recently used in literature. In short wavelength limit after Brill-Hartle average, both lead to the same gauge invariant stress tensor of gravitational wave. For relic gravitational waves in the expanding universe, we examine two forms of pressure, $p_{gw}$ and $\\mathcal{P}_{gw}$, and trace the origin of their difference to a coupling between gravitational waves and the background matter. The difference is shown to be negligibly small for most of cosmic expansion stages starting from inflation. We demonstrate that the wave equation is equivalent to the energy conservation equation using the pressure $\\mathcal{P}_{gw}$ that includes the mentioned coupling.

Daiqin Su; Yang Zhang

2012-04-04T23:59:59.000Z

412

Investigation of Wave Energy Converter Effects on the Nearshore Environment: A Month-Long Study in Monterey Bay CA.  

SciTech Connect

A modified version of an indust ry standard wave modeling tool, SNL - SWAN, was used to perform model simulations for hourly initial wave conditio ns measured during the month of October 2009. The model was run with an array of 50 wave energy converters (WECs) and compared with model runs without WECs. Maximum changes in H s were found in the lee of the WEC array along the angles of incident wave dire ction and minimal changes were found along the western side of the model domain due to wave shadowing by land. The largest wave height reductions occurred during observed typhoon conditions and resulted in 14% decreases in H s along the Santa Cruz shoreline . Shoreline reductions in H s were 5% during s outh swell wave conditions and negligible during average monthly wave conditions.

Roberts, Jesse D.; Chang, Grace; Magalen, Jason; Jones, Craig

2014-09-01T23:59:59.000Z

413

A portable cryostat for the cold transfer of polarized solid HD targets: HDice-I  

SciTech Connect

A device has been developed with moveable liquid nitrogen and liquid helium volumes that is capable of reaching over two meters into the coldest regions of a cryostat or dilution refrigerator and reliably extracting or installing a target of solid, polarized hydrogen deuteride (HD). This Transfer Cryostat incorporates a cylindrical neodymium rare-earth magnet that is configured as a Halbach dipole, which is maintained at 77 K and produces a 0.1 T field around the HD target. Multiple layers provide a hermetic 77 K-shield as the device is used to maintain a target at 2 K during a transfer between cryostats. Tests with frozen-spin HD show negligible polarization loss for either H or D over typical transfer periods. Multiple target transfers with this apparatus have shown an overall reliability of about 95% per transfer, which is a significant improvement over earlier versions of the device.

Bass, Christopher D. [JLAB, Newport News, VA (United States); Sandorfi, Andy M. [JLAB, Newport News, VA (United States); Bade, C.; Blecher, M.; Caracappa, A.; D'Angelo, A.; Deur, A.; Dezern, G.; Glueckler, H.; Hanretty, C.; Ho, D.; Kageya, T.; Khandaker, M.; Laine, V.; Lincoln, F.; Lowry, M. M.; Mahon, J. C.; Connell, T. O.; Peng, P.; Preedom, B.; Seyfarth, H.; Stroeher, H.; Thorn, C. E.; Wei, X.; Whisnant, C. S.

2014-02-01T23:59:59.000Z

414

Chameleon Field Theories  

E-Print Network (OSTI)

Chameleons are light scalar fields with remarkable properties. Through the interplay of self-interactions and coupling to matter, chameleon particles have a mass that depends on the ambient matter density. The manifestation of the fifth force mediated by chameleons therefore depends sensitively on their environment, which makes for a rich phenomenology. In this article, we review two recent results on chameleon phenomenology. The first result a pair of no-go theorems limiting the cosmological impact of chameleons and their generalizations: i) the range of the chameleon force at cosmological density today can be at most ~Mpc; ii) the conformal factor relating Einstein- and Jordan-frame scale factors is essentially constant over the last Hubble time. These theorems imply that chameleons have negligible effect on the linear growth of structure, and cannot account for the observed cosmic acceleration except as some form of dark energy. The second result pertains to the quantum stability of chameleon theories. We ...

Khoury, Justin

2013-01-01T23:59:59.000Z

415

{open_quotes}Open vessel{close_quotes} heat balance for TBP-nitric acid solutions  

SciTech Connect

Heat balances were performed for both single phase (organic) and two phase (organic and aqueous) TBP/HNO{sub 3} solutions at temperatures above 100{degrees}C. The balance included the heat produced from oxidation minus losses from evaporation and butylnitrate formation by esterification. Net heat measurements were performed using an isothermal calorimeter. Losses from evaporation were determined from the volume of condensate produced (ice bath trap) and the component concentrate Carbon and nitrogen balances were performed to determine the stoichiometry of the reaction. The heat from oxidation was then calculated using the heats of formation of the reactants and products. Balances were obtained assuming that the heat from esterification was near zero (negligibly small). For two layered reaction systems the net heat was maintained endothermic, and constant with time, due to the transport of water to the organic phase by bubble mixing at the interface. This transported was replaced the water lost in the organic phase by evaporation.

Smith, J.R.; Cavin, W.S.; Laurinat, J.E. [Westinghouse Savannah River Company, Aiken, SC (United States)

1995-12-31T23:59:59.000Z

416

Interaction and charge transfer in the iron nitride Fe4N  

Science Journals Connector (OSTI)

The linearized augmented-plane-wave method has been used to calculate the electronic bands of the cubic iron nitride Fe4N. Strong interaction between N 2p and Fe 4s orbitals of nearest Fe atoms (FeII has been revealed. This interaction leads to an increase in the N 2p population. The Fe 3d bands remain almost the same as in the pure Fe metal with negligible interaction with neighboring N orbitals. However, the occupation of the FeII 3d bands and the total number of electrons of FeII atoms increases due to less screening. This unified picture clarifies the controversy in the previous explanations of the experimental results obtained from magnetic measurements, electron diffraction, and photoelectron spectroscopy.

Wei Zhou, Li-jia Qu, Qi-ming Zhang, and Ding-sheng Wang

1989-09-15T23:59:59.000Z

417

s-wave-scattering resonances induced by dipolar interactions of polar molecules  

Science Journals Connector (OSTI)

We show that the s-wave-scattering resonances induced by dipolar interactions in polar molecular gases have a universal large and positive effective range, which is very different from Feshbach resonances previously realized in cold atoms before, where the effective range is either negligible or negative. Such a difference has important consequences in many-body physics. At a high-temperature regime, a positive effective range gives rise to a stronger repulsive interaction energy for positive scattering length, and a weaker attractive interaction energy for negative scattering length. At low temperatures, we study a polaron problem formed by a single-impurity molecule, and we find that the polaron binding energy increases at the BEC side and decreases at the BCS side. All these effects are opposite to narrow Feshbach resonances, where the effective range is negative.

Zhe-Yu Shi, Ran Qi, and Hui Zhai

2012-02-27T23:59:59.000Z

418

Magnetic Reconnection with Asymmetry in the Outflow Direction  

E-Print Network (OSTI)

Magnetic reconnection with asymmetry in the outflow direction occurs in the Earth's magnetotail, coronal mass ejections, flux cancellation events, astrophysical disks, spheromak merging experiments, and elsewhere in nature and the laboratory. A control volume analysis is performed for the case of steady antiparallel magnetic reconnection with asymmetric downstream pressure, which is used to derive scaling relations for the outflow velocity from each side of the current sheet and the reconnection rate. Simple relationships for outflow velocity are presented for the incompressible case and the case of symmetric downstream pressure but asymmetric downstream density. Asymmetry alone is not found to greatly affect the reconnection rate. The flow stagnation point and magnetic field null do not coincide in a steady state unless the pressure gradient is negligible at the flow stagnation point.

Murphy, N A; Cassak, P A

2009-01-01T23:59:59.000Z

419

Spheromak tilt stabilization with an energetic particle component  

Science Journals Connector (OSTI)

The tilt and shift stability of a spheromak plasma in the presence of a large orbit ion?ring component is determined by evaluating the magnetic interaction of the plasma with the ion ring and the external coils. Neither the ion?ring toroidal current nor the ring inverse aspect ratio is required to be small. The influence of conducting walls is considered to be negligible as is appropriate for compression experiments. The plasma tilt and shift stability has been evaluated for a comprehensive set of numerically generated self?consistent hybrid spheromak/ion?ring equilibria. Stable equilibria are found over a considerable range of the parameters. The tilt stabilization of the plasma typically requires that more than about 25% of the total toroidal current be carried by the ion ring.

C. Mehanian; R. V. E. Lovelace

1988-01-01T23:59:59.000Z

420

Study on LiCl waste salt treatment process by layer melt crystallization  

SciTech Connect

Layer melt crystallization operated in a static mode has been applied to separate Group I and II chlorides from surrogate LiCl waste salt. The effects of operating conditions such as crystal growing rate(or flux) and initial impurity concentration on separation (or concentration) of cesium, strontium and barium involved in a LiCl melts were analyzed. In a layer crystallization process, separation was impaired by occlusion of impurities and by residual melt adhering to LiCl crystal after at the end of the process. The crystal growth rate strongly affects the crystal structure, therefore the separation efficiency, while the effect of the initial Cs and Sr concentration in LiCl molten salt was nearly negligible. (authors)

Cho, Yung-Zun; Lee, Tae-Kyo; Choi, Jung-Hoon; Eun, Hee-Chul; Park, Hwan-Seo; Kim, In-Tae; Park, Geun-Il [Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353 (Korea, Republic of)

2013-07-01T23:59:59.000Z

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421

Matter power spectrum for the generalized Chaplygin gas model: The relativistic case  

E-Print Network (OSTI)

The generalized Chaplygin gas (GCG) model is the prototype of a unified model of dark energy (DE) and dark matter (DM). It is characterized by equation-of-state (EoS) parameters $A$ and $\\alpha$. We use a statistical analysis of the 2dFGRS data to constrain these parameters. In particular, we find that very small (close to zero) and very large values ($\\alpha\\gg 1$) of the equation-of-state parameter $\\alpha$ are preferred. To test the validity of this type of unification of the dark sector we admit the existence of a separate DM component in addition to the Chaplygin gas and calculate the probability distribution for the fractional contributions of both components to the total energy density. This analysis favors a model for which the Universe is nearly entirely made up of the separate DM component with an almost negligible Chaplygin gas part. This confirms the results of a previous Newtonian analysis.

J. C. Fabris; H. E. S. Velten; W. Zimdahl

2010-01-22T23:59:59.000Z

422

Installation for a nuclear power station with staggered swimming pools  

SciTech Connect

In an installation for a nuclear power station comprising a ''reactor building'' with a first swimming pool for handling of fuel units and a fuel building with a second swimming pool for the transfer, storage and deactivation of the units, the second swimming pool is located at a lower level than that of the first and is connected to the first by an intermediate auxiliary chamber filled with water and located under the first swimming pool. The auxiliary chamber is connected by a vertical pipeline to the first swimming pool and by a horizontal connecting pipeline to the second swimming pool. Each of the pipelines is provided with a shut-off valve, with interlocking means which prevents the simultaneous opening of the two valves. There is negligible dead space around a conveyor basket for fuel units when it is in the vertical or horizontal pipelines.

Gigou, R.

1982-12-28T23:59:59.000Z

423

The Photo-Voltaic Effect  

Science Journals Connector (OSTI)

The Schottky-Mott theory of the barrier layer rectification is extended with respect to the action of light absorbed in the barrier layer. The essential physical assumptions to be used are as follows: (a) The barrier layer is a boundary layer of a semiconductor with a reduced density of mobile charges (either electrons or "holes"); (b) both positive and negative mobile charges are released by light; (c) the recombination within the barrier layer is negligible; and, (d) the electrons and "holes" have the same properties whether released by light or by thermal agitation. Thus an "equation of state" connecting photo-voltage, photo-current, light intensity, wave-length, external resistance, etc., is derived. Among others the regularities of short circuit current, open circuit voltage, photo-characteristic, dark characteristic (barrier layer rectification), power output, and spectral distribution of the quantum yield are involved.

K. Lehovec

1948-08-15T23:59:59.000Z

424

Gas film lubrication equations for very small clearances  

SciTech Connect

In the hard disk magnetic recording technology, the slider carrying the magnetic elements is supported above the magnetic disk by a self-acting air bearing, which produces the load support. A lubricating film must support a required load with suitably small frictional energy losses and without introducing undesirable instabilities. Under submicron clearance conditions, gas film flow can not be described with continuum models since the molecular mean free path is not negligible compared with the clearance. Accurate results for the load-carrying capacity of gas films for arbitrary Knudsen number are very important since they strongly influence the design of the flying head slider and, consequently, the performance of the magnetic disk storage unit. Here we generalize the previous lubrication equations for arbitrary Knudsen number, accommodation coefficient and a small inclination of the slider relative to the magnetic disk surface.

Sobehart, J.R. [Los Alamos National Lab., NM (United States); Reyna, L.G. [International Business Machines Corp., Yorktown Heights, NY (United States). Thomas J. Watson Research Center

1994-05-01T23:59:59.000Z

425

Attenuation of VHE Gamma Rays by the Milky Way Interstellar Radiation Field  

SciTech Connect

The attenuation of very high energy gamma rays by pair production on the Galactic interstellar radiation field has long been thought of as negligible. However, a new calculation of the interstellar radiation field consistent with multi-wavelength observations by DIRBE and FIRAS indicates that the energy density of the Galactic interstellar radiation field is higher, particularly in the Galactic center, than previously thought. We have made a calculation of the attenuation of very high energy gamma rays in the Galaxy using this new interstellar radiation field which takes into account its nonuniform spatial and angular distributions. We find that the maximum attenuation occurs around 100 TeV at the level of about 25% for sources located at the Galactic center, and is important for both Galactic and extragalactic sources.

Moskalenko, Igor V.; /Stanford U., HEPL; Porter, Troy A.; /Louisiana State U.; Strong, Andrew W.; /Garching, Max Planck Inst., MPE

2006-04-19T23:59:59.000Z

426

Collective effects in the microlaser  

Science Journals Connector (OSTI)

In a microlaser experiment performed by An et al. with collaborators [Phys. Rev. Lett. 73, 3375 (1994)] an atomic beam interacts with a microcavity field under such conditions that the average number of atoms in the cavity is less than unity. However, due to the random statistics of atoms in the beam, the probability of two atoms being in the cavity simultaneously in time is not negligible. This must lead to collective two-atom effects that are not included in the standard microlaser model. We have developed a theory that incorporates such collective effects. This theory allows a better understanding of the observed experimental results and predicts some different features of the microlaser.

Mikhail I. Kolobov and Fritz Haake

1997-04-01T23:59:59.000Z

427

Magic-state distillation with the four-qubit code  

E-Print Network (OSTI)

The distillation of magic states is an often-cited technique for enabling universal quantum computing once the error probability for a special subset of gates has been made negligible by other means. We present a routine for magic-state distillation that reduces the required overhead for a range of parameters of practical interest. Each iteration of the routine uses a four-qubit error-detecting code to distill the +1 eigenstate of the Hadamard gate at a cost of ten input states per two improved output states. Use of this routine in combination with the 15-to-1 distillation routine described by Bravyi and Kitaev allows for further improvements in overhead.

Meier, Adam M; Knill, Emanuel

2012-01-01T23:59:59.000Z

428

Magic-state distillation with the four-qubit code  

E-Print Network (OSTI)

The distillation of magic states is an often-cited technique for enabling universal quantum computing once the error probability for a special subset of gates has been made negligible by other means. We present a routine for magic-state distillation that reduces the required overhead for a range of parameters of practical interest. Each iteration of the routine uses a four-qubit error-detecting code to distill the +1 eigenstate of the Hadamard gate at a cost of ten input states per two improved output states. Use of this routine in combination with the 15-to-1 distillation routine described by Bravyi and Kitaev allows for further improvements in overhead.

Adam M. Meier; Bryan Eastin; Emanuel Knill

2012-04-18T23:59:59.000Z

429

Secondary Charmonium Production at LHC Energy  

E-Print Network (OSTI)

We consider the production of charmonium by $D\\bar D$ annihilation during the mixed and hadronic phase of Pb-Pb collision at LHC energy. The calculations for secondary $J/\\psi$ and $\\psi^,$ production are performed within a kinetic model taking into account the space-time evolution of a longitudinally and transversely expanding medium. It is shown that the yield of secondary $J/\\psi$ mesons depends strongly on the $J/\\psi$ dissociation cross section with co-moving hadrons. Within the most likely scenario for the dissociation cross section it will be negligible. The secondary production of $\\psi^,$ mesons, however, due to their large cross section above the threshold, can substantially exceed the primary yield.

P. Braun-Munzinger; K. Redlich

1999-08-06T23:59:59.000Z

430

Are multiple parton interactions important at high energies? New types of hadrons production processes  

E-Print Network (OSTI)

Hadrons interaction at high energies is carried out by one color gluon exchange. All quarks and gluons contained in colliding hadrons take part in interaction and production of particles. The contribution of multiple parton interactions is negligible. Multiple hadrons production at high energies occurs only in three types of processes. The first process is hadrons production in gluon string, the second is hadrons production in two quark strings and the third is hadrons production in three quark strings. In proton-proton interaction production of only gluon string and two quark strings is possible. In proton-antiproton interaction production of gluon string, two quark strings and three quark strings is possible. Therefore multiplicity distributions in proton-proton and proton-antiproton interactions are different.

V. A. Abramovsky

2009-11-25T23:59:59.000Z

431

On the lepton-nucleon neutral and charged current deep inelastic scattering cross sections  

E-Print Network (OSTI)

Based on the requirement in the simulation of lepton-nucleus deep inelastic scattering (DIS), we construct a fortran program LDCS 1.0 calculating the differential and total cross sections for the unpolarized charged lepton-unpolarized nucleon and neutrino-unpolarized nucleon neutral current (charged current) DIS at leading order. Any set of the experimentally fitted parton distribution functions could be employed directly. The mass of incident and scattered leptons is taken into account and the boundary conditions calculating the single differential and total cross section are studied. The calculated results well agree with the corresponding experimental data which indicating the LDCS 1.0 program is good. It is also turned out that the effect of tauon mass is not negligible in the GeV energy level.

Xing-Long Li; Yu-Liang Yan; Xiao-Mei Li; Dai-Mei Zhou; Xu Cai; Ben-Hao Sa

2014-12-17T23:59:59.000Z

432

The Araucaria Project. The Distance of the Large Magellanic Cloud from Near-Infrared Photometry of RR Lyrae Variables  

E-Print Network (OSTI)

We have obtained deep infrared $J$ and $K$ band observations of five fields located in the Large Magellanic Cloud (LMC) bar with the ESO New Technology Telescope equipped with the SOFI infrared camera. In our fields, 65 RR Lyrae stars catalogued by the OGLE collaboration were identified. Using different theoretical and empirical calibrations of the period-luminosity-metallicity relation, we find consistent LMC distance moduli values. Since the observed fields are situated very close to the center of the LMC, the correction for the tilt of the LMC bar with respect to the line of sight is negligible. Our adopted best true distance modulus to the LMC of $18.58 \\pm 0.03$ (statistical) $\\pm$ 0.11 (systematic) mag agrees very well with most independent determinations to this galaxy.

Olaf Szewczyk; Grzegorz Pietrzynski; Wolfgang Gieren; Jesper Storm; Alistair Walker; Luca Rizzi; Karen Kinemuchi; Fabio Bresolin; Rolf-Peter Kudritzki; Massimo Dall'Ora

2008-04-21T23:59:59.000Z

433

Modelling of ship engine exhaust emissions in ports and extensive coastal waters based on terrestrial AIS data – An Australian case study  

Science Journals Connector (OSTI)

Abstract A model is developed to calculate and spatially allocate ship engine exhaust emissions in ports and extensive coastal waters using terrestrial Automatic Identification System data for ship movements and operating modes. The model is applied to the Australian region. The large geographical extent and number of included ports and vessels, and anomalies in the AIS data are challenging. Particular attention is paid to filtering of the movement data to remove anomalies and assign correct operating modes. Data gaps are filled by interpolation and extrapolation. Emissions and fuel consumption are calculated for each individual vessel at frequent intervals and categorised by ship type, ship size, operating mode and machinery type. Comparisons of calculated port emissions with conventional inventories and ship visit data are favourable. Estimations of ship emissions from regions within a 300 km radius of major capital cities suggest that a non-negligible percentage of air pollutants may come from ships.

Laurie Goldsworthy; Brett Goldsworthy

2015-01-01T23:59:59.000Z

434

Single molecule thermodynamics of ATP synthesis by F$_1$-ATPase  

E-Print Network (OSTI)

F$_\\mathrm{o}$F$_1$-ATP synthase is a factory for synthesizing ATP in virtually all cells. Its core machinery is the subcomplex F$_1$-motor (F$_1$-ATPase) and performs the reversible mechanochemical coupling. Isolated F$_1$-motor hydrolyzes ATP, which is accompanied by unidirectional rotation of its central $\\gamma$-shaft. When a strong opposing torque is imposed, the $\\gamma$-shaft rotates in the opposite direction and drives the F$_1$-motor to synthesize ATP. This mechanical-to-chemical free-energy transduction is the final and central step of the multistep cellular ATP-synthetic pathway. Here, we determined the amount of mechanical work exploited by the F$_1$-motor to synthesize an ATP molecule during forced rotations using methodology combining a nonequilibrium theory and single molecule measurements of responses to external torque. We found that the internal dissipation of the motor is negligible even during rotations far from a quasistatic process.

Shoichi Toyabe; Eiro Muneyuki

2015-01-16T23:59:59.000Z

435

Mean Lives of Some Excited States in Multiply Ionized Oxygen and Neon  

Science Journals Connector (OSTI)

The beam-foil technique has been used to measure the mean lives of some excited levels in multiply oxygen and neon. The values for the mean lives are LevelSpectrumMean Life (sec)2p3 D03 (2p4 P4)O iii (O ii)(17.1±0.4) × 10-102p2 D2O iv(17.1±0.4) × 10-102p4 P4Ne iv(6.6±0.2) × 10-102p3 D03Ne v(8.5±0.1) × 10-10 Cascades that affected the decay of the 2p4 P4 level in the Ne iv have been taken into account in the determination of the mean life of that level. The decays of other states were not affected by cascades. Possible effects from unresolved spectral lines from two different levels were considered and found to be negligible for the cases treated herein.

William S. Bickel

1967-10-05T23:59:59.000Z

436

Predictions for single spin asymmetries in $lp^{\\uparrow}\\rightarrow \\pi X $ and $\\gamma^{*} p^{\\uparrow}\\rightarrow \\pi X$  

E-Print Network (OSTI)

Predictions for the single transverse spin asymmetry A_N in semi-inclusive DIS processes are given; non negligible values of A_N may arise from spin effects in the fragmentation of a polarized quark into a final hadron with a transverse momentum k_T with respect to the jet axis, the so-called Collins effect. The elementary single spin asymmetry of the fragmenting quark has been fixed in a previous paper, by fitting data on p(transv. polarized) + P -> pion + X, and the predictions given here are uniquely based on the assumption that the Collins effect is the only cause of the observed single spin asymmetries in p(transv. polarized) + p -> pion + X. Eventual spin and k_T dependences in quark distribution functions, the so-called Sivers effect, are also discussed.

Anselmino, M; Hansson, J; Murgia, F

2000-01-01T23:59:59.000Z

437

COMPRESSIBLE STREAMING INSTABILITIES IN ROTATING THERMAL VISCOUS OBJECTS  

SciTech Connect

We study electromagnetic streaming instabilities in thermal viscous regions of rotating astrophysical objects, such as protostellar and protoplanetary magnetized accretion disks, molecular clouds, their cores, and elephant trunks. The obtained results can also be applied to any regions of interstellar medium, where different equilibrium velocities between charged species can arise. We consider a weakly and highly ionized three-component plasma consisting of neutrals and magnetized electrons and ions. The vertical perturbations along the background magnetic field are investigated. The effect of perturbation of collisional frequencies due to density perturbations of species is taken into account. The growth rates of perturbations are found in a wide region of wave number spectrum for media, where the thermal pressure is larger than the magnetic pressure. It is shown that in cases of strong collisional coupling of neutrals with ions the contribution of the viscosity is negligible.

Nekrasov, A. K., E-mail: anatoli.nekrassov@t-online.d [Institute of Physics of the Earth, Russian Academy of Sciences, 123995 Moscow (Russian Federation)

2009-10-10T23:59:59.000Z

438

Quasi-zero dimensional CuB2O4: a resonant inelastic X-ray scattering case study  

SciTech Connect

We explore the general phenomenology of resonant inelastic scattering (RIXS) using CuB{sub 2}O{sub 4}, a network of CuO{sub 4} plaquettes electronically isolated by B{sup +3} ions. Spectra show a small number of well-separated features, and we exploit the simple electronic structure to explore RIXS phenomenology by developing a calculation which allows for intermediate-state effects ignored in standard approaches. These effects are found to be non-negligible and good correspondence between our model and experiment leads to a simple picture of such phenomenology as the genesis of d {yields} d excitations at the K edge and intermediate-state interference effects.

Hancock, J.N.

2010-04-29T23:59:59.000Z

439

High performance organic field-effect transistors with ultra-thin HfO{sub 2} gate insulator deposited directly onto the organic semiconductor  

SciTech Connect

We have produced stable organic field-effect transistors (OFETs) with an ultra-thin HfO{sub 2} gate insulator deposited directly on top of rubrene single crystals by atomic layer deposition (ALD). We find that ALD is a gentle deposition process to grow thin films without damaging rubrene single crystals, as results these devices have a negligibly small threshold voltage and are very stable against gate-bias-stress, and the mobility exceeds 1 cm{sup 2}/V s. Moreover, the devices show very little degradation even when kept in air for more than 2 months. These results demonstrate thin HfO{sub 2} layers deposited by ALD to be well suited as high capacitance gate dielectrics in OFETs operating at small gate voltage. In addition, the dielectric layer acts as an effective passivation layer to protect the organic semiconductor.

Ono, S., E-mail: shimpei@criepi.denken.or.jp [Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511 (Japan); Häusermann, R. [Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511 (Japan) [Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511 (Japan); Laboratory for Solid State Physics, ETH Zurich, Zurich 8093 (Switzerland); Chiba, D. [Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan) [Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan); PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho Kawaguchi, Saitama 322-0012 (Japan); Department of Applied Physics, University of Tokyo, Tokyo 113-8656 (Japan); Shimamura, K.; Ono, T. [Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan)] [Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan); Batlogg, B. [Laboratory for Solid State Physics, ETH Zurich, Zurich 8093 (Switzerland)] [Laboratory for Solid State Physics, ETH Zurich, Zurich 8093 (Switzerland)

2014-01-06T23:59:59.000Z

440

A review of the NRL CARS microscope  

Science Journals Connector (OSTI)

This paper describes a technique that permits molecular specificity in microscopy while retaining good spatial resolution. Specificity is achieved using Raman scattering from characteristic molecular vibrations and high resolution is obtained by imaging the distribution of visible anti?Stokes radiation. Images have been obtained from a variety of pure organic liquids from deuterated water in onion?skin cells deuterated liposomes and other samples. Thermal and dielectric breakdown damage to even fragile biological materials is made negligible by choice of duty cycle and average power. Sample fluorescence is avoided by the choice of anti?Stokes imaging. Imaging through (usually astigmatic) spectrometers is not needed. Deuterium substitution can be used as a general purpose and artifact?free ‘‘stain’’. The combination of high spatial resolution excellent molecular discrimination and digital image processing (background subtraction) provide the CARS microscope with capabilities not found in any other current microscopic imaging technique.

M. D. Duncan; J. Reintjes; T. J. Manuccia

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" 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

Precision Study of Excited State Effects in Nucleon Matrix Elements  

SciTech Connect

We present a dedicated precision analysis of the influence of excited states on the calculation of several nucleon matrix elements. This calculation is performed at fixed values of the lattice spacing, volume and pion mass that are typical of contemporary lattice computations. We focus on the nucleon axial charge, g{sub A}, for which we use 7,500 measurements, and on the average momentum of the unpolarized isovector parton distribution, x{sub u-d}, for which we use 23,000 measurements. All computations are done employing N{sub f}=2+1+1 maximally-twisted-mass Wilson fermions and non-perturbatively calculated renormalization factors. We find that excited state effects are negligible for g{sub A} and lead to a O(10%) downward shift for x{sub u-d}.

Simon Dinter, Constantia Alexandrou, Martha Constantinou, Vincent Drach, Karl Jansen, Dru B. Renner

2011-10-01T23:59:59.000Z

442

The SuperCDMS Experiment  

SciTech Connect

Modest improvements in the level and/or discrimination of backgrounds are needed to keep backgrounds negligible during the three phases of SuperCDMS. By developing production designs that require only modest testing, detector production rates may be improved sufficiently to allow an exposure of 500 ton d within a reasonable time and budget. Overall, the improvement estimates described above are conservative. Previous development efforts have shown that some areas prove easier and provide larger factors while others prove more difficult. The conservative estimates together with the broad approach reduce the risk and give us confidence that we will succeed, providing the surest way to probe to WIMP-nucleon cross sections of 10{sup -46} cm{sup 2}.

Schnee, Richard W.; Akerib, D.S.; Attisha, M.J.; Bailey, C.N.; Baudis, L.; Bauer, Daniel A.; Brink, P.L.; Brusov, P.P.; Bunker, R.; Cabrera, B.; Caldwell, D.O.; Chang,; Cooley, J.; Crisler, M.B.; Cushman, P.; Denes, P.; Dragowsky, M.R.; Duong, L.; Filippini, J.; Gaitskell, R.J.; Golwala, S.R.; /Case Western Reserve U. /Brown U. /Florida U.

2005-02-01T23:59:59.000Z

443

The Penumbra at Geomagnetic Latitude 20° and the Energy Spectrum of Primary Cosmic Radiation  

Science Journals Connector (OSTI)

The method of obtaining the penumbra presented in a previous paper is applied to the following energies: r=0.385,0.400,0.425,0.450 and 0.500 Störmer at a geomagnetic latitude of 20°. Two graphs showing the variation of the penumbra with the energy are derived from the (?1,?) diagrams of these energies: one at a constant zenith angle of 60°, and the other along the east-west plane. If the number of primaries is assumed to vary inversely as the 2.8 power of their energy, the contribution of the penumbra to the directional intensity at a zenith angle of 60° is calculated, and is shown to be far from negligible. The calculated intensities are quite sensitive to the energy distribution used, and this suggests a possible method for determining the energy spectrum of primary cosmic rays.

R. Albagli Hutner

1939-04-01T23:59:59.000Z

444

Evaluating the motions of a semi-submersible platform with respect to human response  

Science Journals Connector (OSTI)

The motions of a semi-submersible drilling platform have been evaluated so as to predict the effects on the comfort and activities of the crew. The horizontal motions at the drill floor exceeded the ‘average threshold of perception’ defined in International Standard 6897 (ISO 6897, 1984) by more than a factor of two; they were about half of the limit for the worst 10 min in five years for ‘fixed offshore structures where work of a somewhat critical nature is carried out’. Other standards predict that the vertical motion would cause vomiting due to motion sickness in less than 5% of unadapted adults within the first 8h of exposure. The calculated probability of ‘motion-induced interruptions’ (loss-of-balance events) caused by deck motion was negligible. Notwithstanding the above conclusions, it is considered that current standards are insufficient to predict the effects of the motions of ships and floating platforms on the activities of the crew.

Christopher H. Lewis; Michael J. Griffin

1997-01-01T23:59:59.000Z

445

Evaluation of two-stage system for neutron measurement aiming at increase in count rate at Japan Atomic Energy Agency-Fusion Neutronics Source  

SciTech Connect

In order to increase the count rate capability of a neutron detection system as a whole, we propose a multi-stage neutron detection system. Experiments to test the effectiveness of this concept were carried out on Fusion Neutronics Source. Comparing four configurations of alignment, it was found that the influence of an anterior stage on a posterior stage was negligible for the pulse height distribution. The two-stage system using 25 mm thickness scintillator was about 1.65 times the count rate capability of a single detector system for d-D neutrons and was about 1.8 times the count rate capability for d-T neutrons. The results suggested that the concept of a multi-stage detection system will work in practice.

Shinohara, K., E-mail: shinohara.koji@jaea.go.jp; Ochiai, K.; Sukegawa, A. [Japan Atomic Energy Agency, Naka, Ibaraki 311-0193 (Japan); Ishii, K.; Kitajima, S. [Department of Quantum Science and Energy Engineering, Tohoku University, Sendai, Miyagi 980-8579 (Japan); Baba, M. [Cyclotron and Radioisotope Center, Tohoku University, Sendai, Miyagi 980-8578 (Japan); Sasao, M. [Organization for Research Initiatives and Development, Doshisha University, Kyoto 602-8580 (Japan)

2014-11-15T23:59:59.000Z

446

Induced Optical Losses in Optoelectronic Devices due to Focused Ion Beam Damages  

E-Print Network (OSTI)

A study of damages caused by gallium focused ion beam (FIB) into III-V compounds is presented. Potential damages caused by local heating, ion implantation, and selective sputtering are presented. Preliminary analysis shows that local heating is negligible. Gallium implantation is shown to occur over areas tens of nanometers thick. Gallium accumulation as well as selective sputtering during III-V compounds milling is expected. Particularly, for GaAs, this effect leads to gallium segregation and formation of metallic clusters. Microdisk resonators were fabricated using FIB milling with different emission currents to analyze these effects on a device. It is shown that for higher emission current, thus higher implantation doses, the cavity quality factor rapidly decreases due to optical scattering losses induced by implanted gallium atoms.

Vallini, Felipe; Reis, Elohim Fonseca dos; von Zuben, Antônio Augusto; Frateschi, Newton Cesário

2012-01-01T23:59:59.000Z

447

Thermoelectric properties of mesoscopic superconductors  

SciTech Connect

We develop a general framework for describing thermoelectric effects in phase-coherent superconducting structures. Formulas for the electrical conductance, thermal conductance, thermopower, and Peltier coefficient are obtained and their various symmetries discussed. Numerical results for both dirty and clean Andreev interferometers are presented. We predict that giant oscillations of the thermal conductance can occur, even when oscillations in the electrical conductance are negligibly small. Results for clean, two-dimensional systems with a single superconducting inclusion are also presented, which show that normal-state oscillations arising from quasiparticle boundary scattering are suppressed by the onset of superconductivity. In contrast, for a clean system with no normal-state boundary scattering, switching on superconductivity induces oscillations in off-diagonal thermoelectric coefficients. {copyright} {ital 1996 The American Physical Society.}

Claughton, N.R.; Lambert, C.J. [School of Physics and Chemistry, Lancaster University, Lancaster, LA14YB (England)] [School of Physics and Chemistry, Lancaster University, Lancaster, LA14YB (England)

1996-03-01T23:59:59.000Z

448

Numerical analysis of binary solid-liquid phase change with buoyancy and surface tension driven convection  

SciTech Connect

The effects of thermo/diffusocapillary convection on the solidification of aqueous NH{sub 4}Cl in a rectangular cavity have been simulated numerically using a newly developed continuum model. Diffusocapillary convection is negligible relative to thermocapillary convection, and for a 20 {times} 20 mm cavity in a one-gravity environment, thermocapillary effects are most pronounced during the early stages of solidification, when flow conditions are characterized by three major cells. One cell, driven by solutal buoyancy forces, extends from the mush region to the melt and separates top and bottom melt region cells driven primarily by surface tension and buoyancy forces, respectively. With increasing time, however, the top cell strengthens and eventually envelops the entire melt. In terms of the strength of the flow, the liquidus front morphology, and the amount of solid formed, final conditions differ only slightly from those predicted for pure thermal/solutal convection.

Incropera, F.P.; Engel, A.H.H. (Purdue Univ., Lafayette, IN (USA). Heat Transfer Lab.); Bennon, W.D. (Alcoa Technical Center, Alcoa Center, PA (US))

1989-01-01T23:59:59.000Z

449

Self-field effects on instability of wave modes in a two-stream free-electron laser with an axial magnetic field  

SciTech Connect

Free electron lasers (FEL) play major roles in the Raman Regime, due to the charge and current densities of the beam self-field. The method of perturbation has been applied to study the influence of self-electric and self-magnetic fields. A dispersion relation for two-stream free electron lasers with a helical wiggler and an axial magnetic field has been found. This dispersion relation is solved numerically to investigate the influence of self-fields on the FEL coupling and the two-stream instability. It was found that self-fields can produce very large effects on the FEL coupling, but they have almost negligible effects on two-stream instability.

Mohsenpour, Taghi, E-mail: mohsenpour@umz.ac.ir; Rezaee Rami, Omme Kolsoum [Department of Physics, Faculty of Basic Sciences, University of Mazandaran, Babolsar (Iran, Islamic Republic of)

2014-07-15T23:59:59.000Z

450

Wafer-scale solution-derived molecular gate dielectrics for low-voltage graphene electronics  

SciTech Connect

Graphene field-effect transistors are integrated with solution-processed multilayer hybrid organic-inorganic self-assembled nanodielectrics (SANDs). The resulting devices exhibit low-operating voltage (2?V), negligible hysteresis, current saturation with intrinsic gain >1.0 in vacuum (pressure?

Sangwan, Vinod K.; Jariwala, Deep; McMorrow, Julian J.; He, Jianting; Lauhon, Lincoln J. [Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208 (United States); Everaerts, Ken [Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (United States); Grayson, Matthew [Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208 (United States); Marks, Tobin J., E-mail: t-marks@northwestern.edu, E-mail: m-hersam@northwestern.edu; Hersam, Mark C., E-mail: t-marks@northwestern.edu, E-mail: m-hersam@northwestern.edu [Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208 (United States); Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (United States)

2014-02-24T23:59:59.000Z

451

Polarization of the Atmosphere as a Foreground for Cosmic Microwave Background Polarization Experiments  

E-Print Network (OSTI)

We quantify the level of polarization of the atmosphere due to Zeeman splitting of oxygen in the Earth's magnetic field and compare it to the level of polarization expected from the polarization of the cosmic microwave background radiation. The analysis focuses on the effect at mid-latitudes and at large angular scales. We find that from stratospheric balloon borne platforms and for observations near 100 GHz the atmospheric linear and circular polarized intensities is about 10^{-12} and 100 x 10^{-9} K, respectively, making the atmosphere a negligible source of foreground. From the ground the linear and circular polarized intensities are about 10^{-9} and 100 x 10^{-6} K, making the atmosphere a potential source of foreground for the CMB E (B) mode signal if there is even a 1% (0.01%) conversion of circular to linear polarization in the instrument.

Shaul Hanany; Philip Rosenkranz

2003-07-02T23:59:59.000Z

452

Clustering and Triaxial Deformations of $^{40}$Ca  

E-Print Network (OSTI)

We have studied the positive-parity states of $^{40}$Ca using antisymmetrized molecular dynamics (AMD) and the generator coordinate method (GCM). Imposing two different kinds of constraints on the variational calculation, we have found various kinds of $^{40}{\\rm Ca}$ structures such as a deformed-shell structure, as well as $\\alpha$-$^{36}$Ar and $^{12}$C-$^{28}$Si cluster structures. After the GCM calculation, we obtained a normal-deformed band and a superdeformed band together with their side bands associated with triaxial deformation. The calculated $B(E2)$ values agreed well with empirical data. It was also found that the normal-deformed and superdeformed bands have a non-negligible $\\alpha$-$^{36}$Ar cluster component and $^{12}$C-$^{28}$Si cluster component, respectively. This leads to the presence of an $\\alpha$-$^{36}$Ar higher-nodal band occurring above the normal-deformed band.

Yasutaka Taniguchi; Masaaki Kimura; Yoshiko Kanada-En'yo; Hisashi Horiuchi

2007-07-05T23:59:59.000Z

453

Negative refraction with tunable absorption in an active dense gas of atoms  

E-Print Network (OSTI)

Applications of negative index materials (NIM) presently are severely limited by absorption. Next to improvements of metamaterial designs, it has been suggested that dense gases of atoms could form a NIM with negligible losses. In such gases, the low absorption is facilitated by quantum interference. Here, we show that additional gain mechanisms can be used to tune and effectively remove absorption in a dense gas NIM. In our setup, the atoms are coherently prepared by control laser fields, and further driven by a weak incoherent pump field to induce gain. We employ nonlinear optical Bloch equations to analyze the optical response. Metastable Neon is identified as a suitable experimental candidate at infrared frequencies to implement a lossless active negative index material.

P. P. Orth; R. Hennig; C. H. Keitel; J. Evers

2012-10-17T23:59:59.000Z

454

A novel design for monolithic interconnected modules (MIMs) for thermophotovoltaic (TPV) power conversion  

SciTech Connect

The design for the fabrication of Monolithic Interconnected Modules (MIMs) for thermophotovoltaic (TPV) power conversion described in this paper utilizes a novel, interdigitated contacting scheme that increases the flexibility in the size of the component cells and hence the output current and voltage of the module. This flexibility is gained at the expense of only minimally increased grid obscuration. Because the design uses the grid fingers of the component cells as the interconnect structure, the area of the device used for this purpose becomes negligible. In this paper the authors report on the specifics of the design as well as issues related to the fabrication of the modules. Preliminary performance data for representative modules also are offered.

Ward, J.S.; Duda, A.; Wanlass, M.W. [National Renewable Energy Lab., Golden, CO (United States)] [and others

1997-06-01T23:59:59.000Z

455

Dark Energy in the Dark Ages  

E-Print Network (OSTI)

Non-negligible dark energy density at high redshifts would indicate dark energy physics distinct from a cosmological constant or ``reasonable'' canonical scalar fields. Such dark energy can be constrained tightly through investigation of the growth of structure, with limits of \\la2% of total energy density at z\\gg1 for many models. Intermediate dark energy can have effects distinct from its energy density; the dark ages acceleration can be constrained to last less than 5% of a Hubble e-fold time, exacerbating the coincidence problem. Both the total linear growth, or equivalently \\sigma_8, and the shape and evolution of the nonlinear mass power spectrum for zenergy behavior over the entire range z=0-1100.

Eric V. Linder

2006-04-11T23:59:59.000Z

456

Influence of nuclear de-excitation on observables relevant for space exploration  

E-Print Network (OSTI)

The composition of the space radiation environment inside spacecrafts is modified by the interaction with shielding material, with equipment and even with the astronauts' bodies. Accurate quantitative estimates of the effects of nuclear reactions are necessary, for example, for dose estimation and prediction of single-event-upset rates. To this end, it is necessary to construct predictive models for nuclear reactions, which usually consist of an intranuclear-cascade or quantum-molecular-dynamics stage, followed by a nuclear-de-excitation stage. While it is generally acknowledged that it is necessary to accurately simulate the first reaction stage, transport-code users often neglect or underestimate the importance of the choice of the de-excitation code. The purpose of this work is to prove that the de-excitation model is in fact a non-negligible source of uncertainty for the prediction of several observables of crucial importance for space applications. For some particular observables, the systematic uncertai...

Mancusi, Davide; Cugnon, Joseph; David, Jean-Christophe; Leray, Sylvie

2010-01-01T23:59:59.000Z

457

The assessment of the absorbed dose of radiation around a nuclear fuel manufacturing plant  

Science Journals Connector (OSTI)

The estimation of the absorbed dose of radiation by the public around a nuclear plant is a substantial issue for nuclear industries and serves as an essential factor in radiation protection. In this study, the absorbed dose of radiation by the individuals living around a nuclear fuel manufacturing plant was calculated. The Atomic Force Microscopy (AFM) code, which is the generalised version of the AIREM program manual – a computer code for calculating doses, population doses, and ground depositions due to atmospheric emissions of radionuclides – was used to investigate the following pathways: cloud immersion, ground deposition, inhalation and ingestion. The study was carried out in 16 geographical directions over an 80 km radius. The experimental results demonstrate that the maximum dose is absorbed at 800 m distance from the nuclear plant stack in the east southeast (ESE) direction and is equal to 3.7 × 10³ ?Sv, which is negligible in comparison with the background radiation.

Seyed Mahmoud Reza Aghamiri; Neda Bostani; Manuchehr Roshanzamir

2009-01-01T23:59:59.000Z

458

Variation in chlorobenzoate catabolism by Pseudomonas putida P111 as a consequence of genetic alterations  

SciTech Connect

Chlorobenzoates are key intermediates in the degradative pathways of polychlorinated biphenyls and benzoate herbicides. Bacteria that cometabolize these pollutants generally accumulate chlorobenzoates because they are not able to grow on them. Special interest has been focused on ortho-chlorobenzoates because they are more refractory to biodegradation. In all of these studies the enzyme responsible for the first attack on the ortho-chlorobenzoates possesses minimal or negligible activity with meta- or para-chlorobenzoates. This study reports evidence for the existence of two separate benzoate dioxygenases in Pseudomonas putida P111 and for the transpostional nature of the clc operon, on the basis of genetic investigations of different phenotypic variants of this strain. 42 refs., 4 figs., 1 tab.

Brenner, V.; Focht, D.D. (Univ. of California, Riverside, CA (United States)); Hernandez, B.S. (Univ. of Panama (Panama))

1993-09-01T23:59:59.000Z

459

Intrinsic Nanoscience of ? Pu–Ga Alloys: Local Structure and Speciation, Collective Behavior, Nanoscale Heterogeneity, and Aging Mechanisms  

Science Journals Connector (OSTI)

†Materials Science and Technology Division, ‡Theoretical Division, §Health, Safety, Radiation Protection Division, and ?Nuclear Materials Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States ... The EXAFS were calculated as the difference between the full spectra and their smooth atomic backgrounds approximated by an arctangent and Gaussian for the edge and a polynomial spline at higher energies, divided by the atomic absorbance fall off with increasing energy. ... That the Ga environment is only minimally or negligibly affected by aging implies that the aging-induced defects, whether isolated or as novel ordered structures, almost exclusively involve Pu sites and are thus concentrated in Ga-depleted domains in the crystal that must therefore reform if they are lost at some point in the aging process. ...

Steven D. Conradson; Nicolas Bock; Julio M. Castro; Dylan R. Conradson; Lawrence E. Cox; Wojciech Dmowski; David E. Dooley; Takeshi Egami; Francisco J. Espinosa-Faller; Franz J. Freibert; Angel J. Garcia-Adeva; Nancy J. Hess; Erik Holmström; Rafael C. Howell; Barbara A. Katz; Jason C. Lashley; Raymond J. Martinez; David P. Moore; Luis A. Morales; J. David Olivas; Ramiro A. Pereyra; Michael Ramos; Jeffrey H. Terry; Phillip M. Villella

2014-03-24T23:59:59.000Z

460

Probing Dark Matter Self-Interaction in the Sun with IceCube-PINGU  

E-Print Network (OSTI)

We study the capture, annihilation and evaporation of dark matter (DM) inside the Sun. It has been shown that the DM self-interaction can increase the DM number inside the Sun. We demonstrate that this enhancement becomes more significant in the regime of small DM mass, given a fixed DM self-interaction cross section. This leads to the enhancement of neutrino flux from DM annihilation. On the other hand, for DM mass as low as a few GeVs, not only the DM-nuclei scatterings can cause the DM evaporation, DM self-interaction also provides non-negligible contributions to this effect. Consequently, the critical mass for DM evaporation (typically 3 $\\sim$ 4 GeV without the DM self-interaction) can be slightly increased. We discuss the prospect of detecting DM self-interaction in IceCube-PINGU using the annihilation channels $\\chi\\chi \\rightarrow \\tau^{+}\\tau^{-}, \

Chian-Shu Chen; Fei-Fan Lee; Guey-Lin Lin; Yen-Hsun Lin

2014-11-20T23:59:59.000Z

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


461

The dark matter self-interaction and its impact on the critical mass for dark matter evaporations inside the sun  

E-Print Network (OSTI)

We study the capture, annihilation and evaporation of dark matter (DM) inside the Sun. It has been shown that the DM self-interaction can increase the DM number inside the Sun. We demonstrate that this enhancement becomes more significant in the regime of small DM mass, given a fixed DM self-interaction cross section. This leads to the enhancement of neutrino flux from DM annihilation. On the other hand, for DM mass as low as as a few GeVs, not only the DM-nuclei scatterings can cause the DM evaporation, DM self-interaction also provides non-negligible contributions to this effect. Consequently, the critical mass for DM evaporation (typically 3 ~ 4 GeV without the DM self-interaction) can be slightly increased. We discuss the prospect of detecting DM self-interaction in IceCube- PINGU using the annihilation channels $\\chi\\chi\\rightarrow\

Chian-Shu Chen; Fei-Fan Lee; Guey-Lin Lin; Yen-Hsun Lin

2014-12-21T23:59:59.000Z

462

Measurement of tool forces in diamond turning  

SciTech Connect

A dynamometer has been designed and built to measure forces in diamond turning. The design includes a 3-component, piezoelectric transducer. Initial experiments with this dynamometer system included verification of its predicted dynamic characteristics as well as a detailed study of cutting parameters. Many cutting experiments have been conducted on OFHC Copper and 6061-T6 Aluminum. Tests have involved investigation of velocity effects, and the effects of depth and feedrate on tool forces. Velocity has been determined to have negligible effects between 4 and 21 m/s. Forces generally increase with increasing depth of cut. Increasing feedrate does not necessarily lead to higher forces. Results suggest that a simple model may not be sufficient to describe the forces produced in the diamond turning process.

Drescher, J.; Dow, T.A.

1988-12-01T23:59:59.000Z

463

Relativistic theory for the nuclear spin-lattice relaxation rate in ferromagnetic metals with application to 5d impurities in bcc Fe  

Science Journals Connector (OSTI)

A relativistic theory for the nuclear spin-lattice relaxation rate (TT1)-1 in ferromagnetic metals is presented that includes in particular the electric quadrupolar and the core polarization contributions. Because it is formulated within the framework of the spin-polarized relativistic version of the Korringa-Kohn-Rostoker method of band structure calculations it can be applied in principle to any kind of system. Here an application of the theory to 5d impurities (Lu–Hg) in ferromagnetic bcc Fe is presented. While the core polarization contribution turned out to be negligible in all cases, the electric quadrupolar contribution was found to be of the same order of magnitude as the magnetic dipolar one in the case of Lu, Hf, Ir, and Au.

I. Cabria, M. Deng, and H. Ebert

2000-12-01T23:59:59.000Z

464

Spatiotemporal synchronization of drift waves in a magnetron sputtering plasma  

SciTech Connect

A feedforward scheme is applied for drift waves control in a magnetized magnetron sputtering plasma. A system of driven electrodes collecting electron current in a limited region of the explored plasma is used to interact with unstable drift waves. Drift waves actually appear as electrostatic modes characterized by discrete wavelengths of the order of few centimeters and frequencies of about 100 kHz. The effect of external quasi-periodic, both in time and space, travelling perturbations is studied. Particular emphasis is given to the role played by the phase relation between the natural and the imposed fluctuations. It is observed that it is possible by means of localized electrodes, collecting currents which are negligible with respect to those flowing in the plasma, to transfer energy to one single mode and to reduce that associated to the others. Due to the weakness of the external action, only partial control has been achieved.

Martines, E.; Zuin, M.; Cavazzana, R.; Antoni, V.; Serianni, G.; Spolaore, M.; Vianello, N. [Consorzio RFX, Padova (Italy); Adámek, J. [Institute of Plasma Physics AS CR, Prague (Czech Republic)

2014-10-15T23:59:59.000Z

465

The large-scale structure of vacuum  

E-Print Network (OSTI)

The vacuum state in quantum field theory is known to exhibit an important number of fundamental physical features. In this work we explore the possibility that this state could also present a non-trivial space-time structure on large scales. In particular, we will show that by imposing the renormalized vacuum energy-momentum tensor to be conserved and compatible with cosmological observations, the vacuum energy of sufficiently heavy fields behaves at late times as non-relativistic matter rather than as a cosmological constant. In this limit, the vacuum state supports perturbations whose speed of sound is negligible and accordingly allows the growth of structures in the vacuum energy itself. This large-scale structure of vacuum could seed the formation of galaxies and clusters very much in the same way as cold dark matter does.

Albareti, F D; Maroto, A L

2014-01-01T23:59:59.000Z

466

Effect of eccentricity on binary neutron star searches in Advanced LIGO  

E-Print Network (OSTI)

Binary neutron stars (BNSs) are the primary source of gravitational waves for the Laser Interferometer Gravitational-Wave Observatory (LIGO) and its international partners Virgo and KAGRA. Current BNS searches target field binaries whose orbits will have circularized by radiation reaction before their gravitational waves enter the Advanced LIGO sensitive band at 15 Hz. It has been suggested that a population of BNSs may form by n-body interactions near supermassive black holes or in globular clusters and that these systems may have non-negligible eccentricity in the Advanced LIGO band. We show that for BNS systems with total mass of 2.4 (6.0) solar masses, the effect of eccentricity e search is effectual for these binaries. For eccentricities up to e = 0.4, we investigate the selection bias caused by neglecting eccentricity in BNS searches. If such high eccentricity systems exist, searches that specifically target eccentric binaries will be needed in Advanced LIGO and Virgo.

E. A. Huerta; Duncan A. Brown

2013-06-07T23:59:59.000Z

467

Kinetic mix mechanisms in shock-driven inertial confinement fusion implosions  

SciTech Connect

Shock-driven implosions of thin-shell capsules, or “exploding pushers,” generate low-density, high-temperature plasmas in which hydrodynamic instability growth is negligible and kinetic effects can play an important role. Data from implosions of thin deuterated-plastic shells with hydroequivalent D{sup 3}He gas fills ranging from pure deuterium to pure {sup 3}He [H. G. Rinderknecht et al., Phys. Rev. Lett. 112, 135001 (2014)] were obtained to evaluate non-hydrodynamic fuel-shell mix mechanisms. Simulations of the experiments including reduced ion kinetic models support ion diffusion as an explanation for these data. Several additional kinetic mechanisms are investigated and compared to the data to determine which are important in the experiments. Shock acceleration of shell deuterons is estimated to introduce mix less than or comparable to the amount required to explain the data. Beam-target mechanisms are found to produce yields at most an order of magnitude less than the observations.

Rinderknecht, H. G.; Sio, H.; Li, C. K.; Zylstra, A. B.; Rosenberg, M. J.; Frenje, J. A.; Gatu Johnson, M.; Séguin, F. H.; Petrasso, R. D. [Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)] [Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Hoffman, N.; Kagan, G.; Molvig, K. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Betti, R.; Yu Glebov, V.; Meyerhofer, D. D.; Sangster, T. C.; Seka, W.; Stoeckl, C. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)] [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); Bellei, C.; Amendt, P. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)] [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); and others

2014-05-15T23:59:59.000Z

468

Polarization and energy content of parsec scale AGN jets  

E-Print Network (OSTI)

Most of energy carried by relativistic AGN jets remains undetected until hundreds of kiloparsecs where interaction with intergalactic medium produces hot spots. The jet's hidden energy is only partially dissipated at smaller scales, from parsecs to kiloparsecs. Several media may play the role of the ``prime mover'': ions, pairs or large scale magnetic fields. Analyzing VLBI polarization structures of relativistic parsec scale jets we conclude that large-scale magnetic fields can explain the salient polarization properties of parsec-scale AGN jets. This implies that large-scale magnetic fields carry a non-negligible fraction of jet luminosity. We also discuss the possibility that relativistic AGN jets may be electromagnetically (Poynting flux) dominated. In this case, dissipation of the toroidal magnetic field (and not fluid shocks) may be responsible for particle acceleration.

Maxim Lyutikov; Vladimir I. Pariev; Denise C. Gabuzda

2004-11-15T23:59:59.000Z

469

No Collective Neutrino Flavor Conversions during the Supernova Accretion Phase  

SciTech Connect

We perform a dedicated study of the supernova (SN) neutrino flavor evolution during the accretion phase, using results from recent neutrino radiation hydrodynamics simulations. In contrast to what was expected in the presence of only neutrino-neutrino interactions, we find that the multiangle effects associated with the dense ordinary matter suppress collective oscillations. The matter suppression implies that neutrino oscillations will start outside the neutrino decoupling region and therefore will have a negligible impact on the neutrino heating and the explosion dynamics. Furthermore, the possible detection of the next galactic SN neutrino signal from the accretion phase, based on the usual Mikheyev-Smirnov-Wolfenstein effect in the SN mantle and Earth matter effects, can reveal the neutrino mass hierarchy in the case that the mixing angle {theta}{sub 13} is not very small.

Chakraborty, Sovan; Mirizzi, Alessandro; Saviano, Ninetta; Tomas, Ricard [II Institut fuer Theoretische Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany); Fischer, Tobias [GSI, Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt (Germany); Technische Universitaet Darmstadt, Schlossgartenstrasse 9, 64289 Darmstadt (Germany)

2011-10-07T23:59:59.000Z

470

Environmental Impacts, Health and Safety Impacts, and Financial Costs of the Front End of the Nuclear Fuel Cycle  

SciTech Connect

FEFC processes, unlike many of the proposed fuel cycles and technologies under consideration, involve mature operational processes presently in use at a number of facilities worldwide. This report identifies significant impacts resulting from these current FEFC processes and activities. Impacts considered to be significant are those that may be helpful in differentiating between fuel cycle performance and for which the FEFC impact is not negligible relative to those from the remainder of the full fuel cycle. This report: • Defines ‘representative’ processes that typify impacts associated with each step of the FEFC, • Establishes a framework and architecture for rolling up impacts into normalized measures that can be scaled to quantify their contribution to the total impacts associated with various fuel cycles, and • Develops and documents the bases for estimates of the impacts and costs associated with each of the representative FEFC processes.

Brett W Carlsen; Urairisa Phathanapirom; Eric Schneider; John S. Collins; Roderick G. Eggert; Brett Jordan; Bethany L. Smith; Timothy M. Ault; Alan G. Croff; Steven L. Krahn; William G. Halsey; Mark Sutton; Clay E. Easterly; Ryan P. Manger; C. Wilson McGinn; Stephen E. Fisher; Brent W. Dixon; Latif Yacout

2013-07-01T23:59:59.000Z

471

Numerical investigation of the convection of heat-emitting liquid reactor materials taking stratification into account  

SciTech Connect

Convective heat transfer to a reactor vessel following core destruction is analyzed. Fuel fragment and structural materials are assumed to melt either mix uniformly or stratify. The Navier-Stokes equations were solved numerically with a rectangular coarse difference grid, neglecting the negligibly small contribution of the laminar boundary layer. Calculations for different levels of volume heat release showed that integral heat fluxes at the lateral and top surfaces of the melt are virtually independent of the convective flow scenario. However, the maximum heat flux on the lateral surface is approximately 1.5 times higher for the homogeneous case than for the stratified case. The higher heat flux could result in larger mechanical loads on the reactor vessel, requiring more cooling of the reactor vessel outer surface. 12 refs., 4 figs.

Likhanskii, V.V.; Loboiko, A.I.; Khoruzhii, O.V.

1994-11-01T23:59:59.000Z

472

Ozone Removal by Filters Containing Activated Carbon: A Pilot Study  

SciTech Connect

This study evaluated the ozone removal performance of moderate-cost particle filters containing activated carbon when installed in a commercial building heating, ventilating, and air conditioning (HVAC) system. Filters containing 300 g of activated carbon per 0.09 m2 of filter face area were installed in two 'experimental' filter banks within an office building located in Sacramento, CA. The ozone removal performance of the filters was assessed through periodic measurements of ozone concentrations in the air upstream and downstream of the filters. Ozone concentrations were also measured upstream and downstream of a 'reference' filter bank containing filters without any activated carbon. The filter banks with prefilters containing activated carbon were removing 60percent to 70percent of the ozone 67 and 81 days after filter installation. In contrast, there was negligible ozone removal by the reference filter bank without activated carbon.

Fisk, William; Spears, Mike; Sullivan, Douglas; Mendell, Mark

2009-09-01T23:59:59.000Z

473

Al-doped ZnO powdered materials: Al solubility limit and IR absorption properties  

Science Journals Connector (OSTI)

Al-doped ZnO powder was synthesized via the Pechini route with a doping rate varying from 1 to 4 mol.%. A solubility limit has been estimated under 0.3 mol.% of Al using X-ray diffraction refinements. The incorporation of aluminium into the ZnO lattice was investigated by 27Al NMR, which suggests an extremely low amount of Al in a distribution of sites in ZnO. In order to assess the impact of such a low dopant amount, diffuse reflection experiments were performed for a wavelength range from 200 to 2500 nm. If the effect of doping was negligible for samples prepared at 850 °C, annealing at 1200 °C clearly reveals enhanced IR absorption properties for the doped samples, which are similar whatever be the nominal Al content.

Hélène Serier; Manuel Gaudon; Michel Ménétrier

2009-01-01T23:59:59.000Z

474

Fluid dynamics, particulate segregation, chemical processes, and natural ore analog discussions that relate to the potential for criticality in Hanford tanks  

SciTech Connect

This report presents an in-depth review of the potential for nuclear criticality to occur in Hanford defense waste tanks during past, current and future safe storage and maintenance operations. The report also briefly discusses the potential impacts of proposed retrieval activities, although retrieval was not a main focus of scope. After thorough review of fluid dynamic aspects that focus on particle segregation, chemical aspects that focus on solubility and adsorption processes that might concentrate plutonium and/or separate plutonium from the neutron absorbers in the tank waste, and ore-body formation and mining operations, the interdisciplinary team has come to the conclusion that there is negligible risk of nuclear critically under existing storage conditions in Hanford site underground waste storage tanks. Further, for the accident scenarios considered an accidental criticality is incredible.

Barney, G.S.

1996-09-27T23:59:59.000Z

475

Evaluation energy efficiency of bioconversion knot rejects to ethanol in comparison to other thermochemically pretreated biomass  

Science Journals Connector (OSTI)

Rejects from sulfite pulp mill that otherwise would be disposed of by incineration were converted to ethanol by a combined physical–biological process that was comprised of physical refining and simultaneous saccharification and fermentation (SSF). The energy efficiency was evaluated with comparison to thermochemically pretreated biomass, such as those pretreated by dilute acid (DA) and sulfite pretreatment to overcome recalcitrance of lignocelluloses (SPORL). It was observed that the structure deconstruction of rejects by physical refining was indispensable to effective bioconversion but more energy intensive than that of thermochemically pretreated biomass. Fortunately, the energy consumption was compensated by the reduced enzyme dosage and the elevated ethanol yield. Furthermore, adjustment of disk-plates gap led to reduction in energy consumption with negligible influence on ethanol yield. In this context, energy efficiency up to 717.7% was achieved for rejects, much higher than that of SPORL sample (283.7%) and DA sample (152.8%).

Zhaojiang Wang; Menghua Qin; J.Y. Zhu; Guoyu Tian; Zongquan Li

2013-01-01T23:59:59.000Z

476

Chitosan as green kinetic inhibitors for gas hydrate formation  

Science Journals Connector (OSTI)

The kinetic inhibiting effect of a number of chitosans on hydrate formation was investigated using methane and methane/ethane gas mixtures. The results indicated that chitosan was a good kinetic inhibitor. The induction time of gas hydrate formation evidently increased with the degree of deacetylation (DD), however, when DD was higher than 80%, the effect of DD on the induction time was negligible. Moreover, it was found that the molecular weight (MW) of chitosan and the addition of polyethylene oxide (PEO) had little effect on the induction time. The optimal concentration of chitosan was found to be 0.6 wt%. Finally, the mechanisms of the kinetic inhibitor on the hydrate formation were discussed.

Yongjun Xu; Minlin Yang; Xiaoxi Yang

2010-01-01T23:59:59.000Z

477

Nonlocal homogenization theory in metamaterials: effective electromagnetic spatial dispersion and artificial chirality  

E-Print Network (OSTI)

We develop, from first principles, a general and compact formalism for predicting the electromagnetic response of a metamaterial with non-magnetic inclusions in the long wavelength limit, including spatial dispersion up to the second order. Specifically, by resorting to a suitable multiscale technique, we show that medium effective permittivity tensor and the first and second order tensors describing spatial dispersion can be evaluated by averaging suitable spatially rapidly-varying fields each satysifing electrostatic-like equations within the metamaterial unit cell. For metamaterials with negligible second-order spatial dispersion, we exploit the equivalence of first-order spatial dispersion and reciprocal bianisotropic electromagnetic response to deduce a simple expression for the metamaterial chirality tensor. Such an expression allows us to systematically analyze the effect of the composite spatial symmetry properties on electromagnetic chirality. We find that even if a metamaterial is geometrically achi...

Ciattoni, Alessandro

2015-01-01T23:59:59.000Z

478

On the need of the Light Elements Primary Process (LEPP)  

E-Print Network (OSTI)

Extant chemical evolution models underestimate the Galactic production of Sr, Y and Zr as well as the Solar System abundances of s-only isotopes with 904.0 M_SUN) are negligible; 4) the inclusion of rotation implies a downward shift of the whole distribution with an higher efficiency for the heavy s-only isotopes, leading to a flatter s-only distribution; 5) different prescriptions on convection or mass-loss produce nearly rigid shifts of the whole distribution. In summary, a variation of the standard paradigm of AGB nucleosynthesis would allow to reconcile models predictions with Solar System s-only abundances. Nonetheless, the LEPP cannot be definitely ruled out, because of the uncertainties still affecting stellar and Galactic chemical evolution models.

Cristallo, Sergio; Straniero, Oscar; Piersanti, Luciano

2015-01-01T23:59:59.000Z

479

Emulation to simulate low resolution atmospheric data  

SciTech Connect

Climate simulations require significant compute power, they are complex and therefore it is time consuming to simulate them. We have developed an emulator to simulate unknown climate datasets. The emulator uses stochastic collocation and multi-dimensional in- terpolation to simulate the datasets. We have used the emulator to determine various physical quantities such as temperature, short and long wave cloud forcing, zonal winds etc. The emulation gives results which are very close to those obtained by simulations. The emulator was tested on 2 degree atmospheric datasets. The work evaluates the pros and cons of evaluating the mean first and inter- polating and vice versa. To determine the physical quantities, we have assumed them to be a function of time, longitude, latitude and a random parameter. We have looked at parameters that govern high stable clouds, low stable clouds, timescale for convection etc. The emulator is especially useful as it requires negligible compute times when compared to the simulation itself.

Hebbur Venkata Subba Rao, Vishwas [ORNL; Archibald, Richard K [ORNL; Evans, Katherine J [ORNL

2012-08-01T23:59:59.000Z

480

Energy band modulation of graphane by hydrogen-vacancy chains: A first-principles study  

SciTech Connect

We investigated a variety of configurations of hydrogen-vacancy chains in graphane by first-principles density functional calculation. We found that graphane with two zigzag H-vacancy chains segregated by one or more H chain is generally a nonmagnetic conductor or has a negligible band gap. However, the same structure is turned into a semiconductor and generates a magnetic moment if either one or both of the vacancy chains are blocked by isolated H atoms. If H-vacancy chains are continuously distributed, the structure is similar to a zigzag graphene nanoribbon embedded in graphane. It was also found that the embedded zigzag graphene nanoribbon is antiferromagnetic, and isolated H atoms left in the 2-chain nanoribbon can tune the band gap and generate net magnetic moments. Similar effects are also obtained if bare carbon atoms are present outside the nanoribbon. These results are useful for designing graphene-based nanoelectronic circuits.

Wu, Bi-Ru [Department of Natural science, Center for General Education, Chang Gung University, Kueishan 333, Taiwan, ROC (China); Yang, Chih-Kai, E-mail: ckyang@nccu.edu.tw [Graduate Institute of Applied Physics, National Chengchi University, Taipei 11605, Taiwan, ROC (China)

2014-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "negligible negligible negligible" from the National Library of EnergyBeta (NLEBeta).
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481

Measurement of Spin-Correlation Parameters all and Asl in P-P Elastic-Scattering from 500 Mev to 800 Mev  

E-Print Network (OSTI)

in magnitude of target polarization in the (+) and ( ?) states was negligible. When the beam polarization is purely L, the asym- metry associated with the yields is eI =P&"PI'AII . When the beam contains both L and S components of polariza- tion, two....365 0.356 0.360 0.310 0.309 0.291 0.325 0.298 0.309 0.296 0.301 0.279 0.250 0.267 0.331 0.316 0.310 0.307 0.289 0.235 0.263 0.254 0.233 0.223 0.278 0.221 0.257 0.331 0.343 0.312 0.308 0.070 0.023 0.027 0.123 0.026 85...

Glass, G.; Bhatia, T. S.; Hiebert, John C.; Kenefick, R. A.; Nath, S.; Northcliffe, L. C.; Tippens, W. B.; Barlow, D. B.; Jarmer, J. J.; Simmons, J. E.; Jeppersen, R. H.; Tripard, G. E.

1992-01-01T23:59:59.000Z

482

Massive charged scalar field in the Kerr-Newman background II: Hawking radiation  

E-Print Network (OSTI)

We perform accurate calculations of the energy-, momentum-, and charge-emission rates of a charged scalar field in the background of the Kerr-Newman black hole at the range of parameters for which the effect is not negligibly small and, at the same time, the semiclassical regime is, at least marginally, valid. For black holes with charge below or not much higher than the charge accretion limit $Q \\sim \\mu M/e$ (where $e$ and $\\mu$ are the electron's mass and charge), the time between the consequent emitting of two charged particles is very large. For primordial black holes the transition between the increasing and decreasing of the ratio $Q/M$ occurs around the charge accretion limit. The rotation increases the intensity of radiation up to three orders, while the effect of the field's mass strongly suppresses the radiation.

R. A. Konoplya; A. Zhidenko

2014-04-03T23:59:59.000Z

483

Isotropic AdS/CFT fireball  

SciTech Connect

We study the AdS/CFT thermodynamics of the spatially isotropic counterpart of the Bjorken similarity flow in d-dimensional Minkowski space with d{>=}3, and of its generalization to linearly expanding d-dimensional Friedmann-Robertson-Walker cosmologies with arbitrary values of the spatial curvature parameter k. The bulk solution is a nonstatic foliation of the generalized Schwarzschild-AdS black hole with a horizon of constant curvature k. The boundary matter is an expanding perfect fluid that satisfies the first law of thermodynamics for all values of the temperature and the spatial curvature, but it admits a description as a scale-invariant fluid in local thermal equilibrium only when the inverse Hawking temperature is negligible compared with the spatial curvature length scale. A Casimir-type term in the holographic energy-momentum tensor is identified from the threshold of black hole formation and is shown to take different forms for k{>=}0 and k<0.

Kajantie, K. [Helsinki Institute of Physics, P.O. Box 64, FI-00014 University of Helsinki (Finland); Department of Physics, P.O. Box 64, FI-00014 University of Helsinki (Finland); Louko, Jorma [School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD (United Kingdom); Tahkokallio, T. [Helsinki Institute of Physics, P.O. Box 64, FI-00014 University of Helsinki (Finland); Department of Physics, P.O. Box 64, FI-00014 University of Helsinki (Finland); Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia, V8W 3P6 (Canada)

2008-12-15T23:59:59.000Z

484

Gravitationally Induced Particle Production: Thermodynamics and Kinetic Theory  

E-Print Network (OSTI)

A relativistic kinetic description for the irreversible thermodynamic process of gravitationally induced particle production is proposed in the context of an expanding Friedmann-Robertson-Walker (FRW) geometry. We show that the covariant thermodynamic treatment referred to as "adiabatic" particle production provoked by the cosmic time-varying gravitational field has a consistent kinetic counterpart. The variation of the distribution function is associated to a non-collisional kinetic term of quantum-gravitational origin which is proportional to the ratio $\\Gamma/H$, where $\\Gamma$ is the gravitational particle production rate and H is the Hubble parameter. For $\\Gamma << H$ the process is negligible and as should be expected it also vanishes (regardless of the value of $\\Gamma$) in the absence of gravitation. The resulting non-equilibrium distribution function has the same functional form of equilibrium with the evolution laws corrected by the particle production process. The macroscopic temperature evo...

Lima, J A S

2014-01-01T23:59:59.000Z

485

Localized saddle-point search and application to temperature-accelerated dynamics  

SciTech Connect

We present a method for speeding up temperature-accelerated dynamics (TAD) simulations by carrying out a localized saddle-point (LSAD) search. In this method, instead of using the entire system to determine the energy barriers of activated processes, the calculation is localized by only including a small chunk of atoms around the atoms directly involved in the transition. Using this method, we have obtained N-independent scaling for the computational cost of the saddle-point search as a function of system size N. The error arising from localization is analyzed using a variety of model systems, including a variety of activated processes on Ag(100) and Cu(100) surfaces, as well as multiatom moves in Cu radiation damage and metal heteroepitaxial growth. Our results show significantly improved performance of TAD with the LSAD method, for the case of Ag/Ag(100) annealing and Cu/Cu(100) growth, while maintaining a negligibly small error in energy barriers.

Shim, Yunsic; Amar, Jacques G. [Department of Physics and Astronomy, University of Toledo, Toledo, Ohio 43606 (United States); Callahan, Nathan B. [Department of Physics and Astronomy, University of Toledo, Toledo, Ohio 43606 (United States); Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)

2013-03-07T23:59:59.000Z

486

Nonperturbative renormalization of the neutrinoless double-beta operator in p-shell nuclei  

E-Print Network (OSTI)

We use Lee-Suzuki mappings and related techniques to construct effective two-body p-shell interactions and neutrinoless double-beta operators that exactly reproduce the results of large no-core-shell-model calculations of double-beta decay in nuclei with mass number A=6. We then apply the effective operators to the decay of nuclei with A=7, 8, and 10, again comparing with no-core calculations in much larger spaces. The results with the effective two-body operators are generally good. In some cases, however, they differ non-negligibly from the full no-core results, suggesting that three-body corrections to the decay operator in heavier nuclei may be important. An application of our procedure and related ideas to fp-shell nuclei such as 76Ge should be feasible within coupled-cluster theory.

Deepshikha Shukla; Jonathan Engel; Petr Navratil

2011-08-15T23:59:59.000Z

487

P and T odd effects in deuteron in the Reid potential  

E-Print Network (OSTI)

The $P$ and $T$ odd deuteron multipoles are calculated in the Reid nucleon-nucleon potential in the chiral limit $m_{\\pi}\\to 0$. The contact current generated by the $\\pi$-meson exchange does not contribute to the anapole moment. The contact current generated by the vector meson exchange is negligible in comparison with other contributions of vector mesons. The result for the deuteron electric dipole moment is of great interest because of the experiment on its measurement discussed in Brookhaven. The deuteron photodisintegration cross section asymmetry at the threshold is also calculated. It is shown that its value strongly depends on the tensor forces and d-wave contribution to the deuteron wave function.

R. V. Korkin

2005-04-27T23:59:59.000Z

488

Measurement of the asymmetries in 3He(e,e'p)d and 3He(e,e'p)np  

E-Print Network (OSTI)

The electron-target-asymmetries A_parallel and A_perpendicular with target spin parallel and perpendicular to the momentum transfer q were measured for both the two-- and three-body breakup of 3He in the 3He(e,e'p)-reaction. Polarized electrons were scattered off polarized 3He in the quasielastic regime in parallel kinematics with the scattered electron and the knocked-out proton detected using the Three-Spectrometer-Facility at MAMI. The results are compared to Faddeev calculations which take into account Final State Interactions as well as Meson Exchange Currents. The experiment confirms the prediction of a large effect of Final State Interactions in the asymmetry of the three-body breakup and of an almost negligible one for the two-body breakup.

P. Achenbach; D. Baumann; R. Boehm; B. Boillat; D. Bosnar; C. Carasco; M. Ding; M. O. Distler; J. Friedrich; W. Gloeckle; J. Golak; Y. Goussev; P. Grabmayr; W. Heil; A. Huegli; P. Jennewein; G. Jover Manas; J. Jourdan; H. Kamada; T. Klechneva; B. Krusche; K. W. Krygier; J. G. Llongo; M. Lloyd; M. Makek; H. Merkel; C. Micheli; U. Mueller; A. Nogga; R. Neuhausen; Ch. Normand; L. Nungesser; A. Ott; E. Otten; F. Parpan; R. Perez Benito; M. Potokar; D. Rohe; D. Rudersdorf; J. Schmiedeskamp; M. Seimetz; I. Sick; S. Sirca; R. Skibinski; S. Stave; G. Testa; R. Trojer; Th. Walcher; M. Weis; H. Witala; H. Woehrle

2005-05-11T23:59:59.000Z

489

An adaptive agent-based modeling approach for analyzing the influence of transaction costs on emissions trading markets  

Science Journals Connector (OSTI)

Transaction costs are considered an essential factor that can adversely affect the performance of emissions trading markets. However, most studies are based on a static analyzing framework, making it difficult to simulate real economic situations, in which the dynamic behavior and interaction between firms in an emission trading system are fairly complicated and appear irrational to some extent. Based on an agent-based modeling approach, an artificial sulfur dioxide (SO2) emission trading market is developed to identify the dynamic influence of transaction costs on market efficiency. The simulation results based on empirical data from Jiangsu Province in China reveal that transaction costs have a negligible effect on the market price. However, transaction costs can block a small amount of trading as well as decrease total emission trading amount and market efficiency. Therefore, the policy design of emission trading in China should treat transaction costs carefully.

Bing Zhang; Yongliang Zhang; Jun Bi

2011-01-01T23:59:59.000Z

490

Assessment of radiocarbon in the Savannah River Site Environment  

SciTech Connect

This report is a radiological assessment of {sup 14}C releases from the Savannah River Site. During the operation of five production reactors {sup 14}C has been produced at SRS. Approximately 3000 curies have been released to the atmosphere but there are no recorded releases to surface waters. Once released, the {sup 14}C joins the carbon cycle and a portion enters the food chain. The overall radiological impact of SRS releases on the offsite maximum individual can be characterized by a dose of 1.1 mrem, compared with a dose of 12,960 mrem from non-SRS sources during the same period of time. Releases of {sup 14}C have resulted in a negligible risk to the environment and the population it supports.

Carlton, W.H.; Evans, A.G.; Murphy, C.E. Jr.; Tuck, D.M.

1993-03-01T23:59:59.000Z

491

GIS-based pre-mining land damage assessment for underground coal mines in high groundwater area  

Science Journals Connector (OSTI)

Coal mining cause different degrees of damage to both land and ecosystems. Evaluation of disturbed land is a fundamental and prerequisite work for land reclamation and rehabilitation. However, most of those evaluations were carried out when mining was under process or after it cease. This paper proposes an innovative assessment model for pre-evaluation which could be implemented before mining activity begins. A geographic information system (GIS) was constructed to evaluate land damage. Three natural condition factors and three geological condition factors were chosen for evaluation. The results show that: land damage was categorised as five degrees, which are negligible, slight, moderate, severe, and very severe. Furthermore, very severely damaged areas are mainly concentrated in the northwest part of the coal mine, whereas slight damaged areas are mainly concentrated in the southwest. The developed coupling technique was used to forecast land damage, and provide reference for reclamation work.

Wu Xiao; Zhenqi Hu

2014-01-01T23:59:59.000Z

492

ON THE USE OF THIN SCRAPERS FOR MOMENTUM COLLIMATION.  

SciTech Connect

In transverse collimation systems, thin scrapers are used as primary collimators to interact with the beam halo and increase its impact parameter on the secondary collimators or absorbers. In the same way, placing the primary collimator in a dispersion region is used for momentum collimation. However, the use of scrapers for momentum collimation presents an additional disadvantage when handling medium-low energy beams. The energy lost by ionization is non negligible and the proton can be kicked out of the RF bucket. The material and thickness of the scraper have to be carefully adjusted according to the position of secondary collimators and momentum aperture of the machine. We derive simple analytical expressions for a generic case. The same calculations have been applied to the case of the SNS accumulator ring. After careful considerations, the use of scrapers for momentum collimation was ruled out in favor of a beam in gap kicker system.

CATALAN-LASHERAS,N.

2001-06-18T23:59:59.000Z

493

Bose and Fermi gases in the early Universe with self-gravitational effect  

SciTech Connect

We study the self-gravitational effect on the equation of state (EoS) of Bose and Fermi gases in thermal equilibrium at the end of reheating, the period after quark-hadron transition and before big bang nucleosynthesis (BBN). After introducing new grand canonical partition functions based on the work of Uhlenbeck and Gropper, we notice some interesting features of the newly developed EoSs with distinct behaviors of relativistic and nonrelativistic gases under self-gravity. The usual negligence of the self-gravitational effect when solving the background expansion of the early Universe is justified with numerical results, showing the magnitude of the self-gravitational modification of the state constant to be less than O(10{sup -78}). This helps us to clarify the background thermal evolution of the primordial patch. Such clarification is crucial in testing gravity theories, evaluating inflation models and determining element abundances in BBN.

Niu Yuezhen; Huang Junwu; Ma Boqiang [School of Physics and State Keye Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China); School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China) and Center for High Energy Physics, Peking University, Beijing 100871 (China) and Center for History and Philosophy of Science, Peking University, Beijing 100871 (China)

2011-03-15T23:59:59.000Z

494

A global analysis of Spitzer and new HARPS data confirms the loneliness and metal-richness of GJ 436 b  

E-Print Network (OSTI)

Context. GJ 436b is one of the few transiting warm Neptunes for which a detailed characterisation of the atmosphere is possible, whereas its non-negligible orbital eccentricity calls for further investigation. Independent analyses of several individual datasets obtained with Spitzer have led to contradicting results attributed to the different techniques used to treat the instrumental effects. Aims. We aim at investigating these previous controversial results and developing our knowledge of the system based on the full Spitzer photometry dataset combined with new Doppler measurements obtained with the HARPS spectrograph. We also want to search for additional planets. Methods. We optimise aperture photometry techniques and the photometric deconvolution algorithm DECPHOT to improve the data reduction of the Spitzer photometry spanning wavelengths from 3-24 {\\mu}m. Adding the high precision HARPS radial velocity data, we undertake a Bayesian global analysis of the system considering both instrumental and stellar...

Lanotte, A A; Demory, B -O; Fortney, J J; Astudillo, N; Bonfils, X; Magain, P; Delfosse, X; Forveille, T; Lovis, C; Mayor, M; Neves, V; Pepe, F; Queloz, D; Santos, N; Udry, S

2014-01-01T23:59:59.000Z

495

Gas lasers with wave-chaotic resonators  

E-Print Network (OSTI)

Semiclassical multimode laser theory is extended to gas lasers with open two-dimensional resonators of arbitrary shape. The Doppler frequency shift of the linear-gain coefficient leads to an additional linear coupling between the modes, which, however, is shown to be negligible. The nonlinear laser equations simplify in the special case of wave-chaotic resonators. In the single-mode regime, the intensity of a chaotic laser, as a function of the mode frequency, displays a local minimum at the frequency of the atomic transition. The width of the minimum scales with the inhomogeneous linewidth, in contrast to the Lamb dip in uniaxial resonators whose width is given by the homogeneous linewidth.

Oleg Zaitsev

2010-10-28T23:59:59.000Z

496

String Gas Cosmology and Non-Gaussianities  

E-Print Network (OSTI)

Recently it has been shown that string gas cosmology, an alternative model of the very early universe which does not involve a period of cosmological inflation, can give rise to an almost scale invariant spectrum of metric perturbations. Here we calculate the non-Gaussianities of the spectrum of cosmological fluctuations in string gas cosmology, and find that these non-Gaussianities depend linearly on the wave number and that their amplitude depends sensitively on the string scale. If the string scale is at the TeV scale, string gas cosmology could lead to observable non-Gaussianities, if it is close to the Planck scale, then the non-Gaussianities on current cosmological scales are negligible.

Bin Chen; Yi Wang; Wei Xue; Robert Brandenberger

2008-03-05T23:59:59.000Z

497

Transport properties of a meson gas  

E-Print Network (OSTI)

We present recent results on a systematic method to calculate transport coefficients for a meson gas (in particular, we analyze a pion gas) at low temperatures in the context of Chiral Perturbation Theory. Our method is based on the study of Feynman diagrams with a power counting which takes into account collisions in the plasma by means of a non-zero particle width. In this way, we obtain results compatible with analysis of Kinetic Theory with just the leading order diagram. We show the behavior with temperature of electrical and thermal conductivities and shear and bulk viscosities, and we discuss the fundamental role played by unitarity. We obtain that bulk viscosity is negligible against shear viscosity near the chiral phase transition. Relations between the different transport coefficients and bounds on them based on different theoretical approximations are also discussed. We also comment on some applications to heavy-ion collisions.

D. Fernandez-Fraile; A. Gomez Nicola

2007-07-09T23:59:59.000Z

498

Electron loss of fast projectiles in collisions with molecules  

SciTech Connect

The single- and multiple-electron loss of fast highly charged projectiles in collisions with neutral molecules is studied within the framework of a nonperturbative approach. The cross sections for single-, double-, and triple-electron losses are calculated for the collision system Fe{sup q+}{yields}N{sub 2} (q=24, 25, 26) at the collision energies 10, 100, and 1000 MeV/nucleon. The effects caused by the collision multiplicity and the orientation of the axis of the target molecule are treated. It is shown that the collision multiplicity effect leads to considerable differences for the cases of perpendicular and parallel orientations of the molecular axes with respect to the direction of the projectile motion, while for chaotic orientation such an effect is negligible.

Matveev, V. I.; Makarov, D. N. [Pomor State University, 4 Lomonosov Street, 163002 Arkhangelsk (Russian Federation); Rakhimov, Kh. Yu. [Department of Physics, National University of Uzbekistan, 100174 Tashkent (Uzbekistan)

2011-07-15T23:59:59.000Z

499

Dissociative-ionization cross sections for 12-keV-electron impact on CO{sub 2}  

SciTech Connect

The dissociative ionization of a CO{sub 2} molecule is studied at an electron energy of 12 keV using the multiple ion coincidence imaging technique. The absolute partial ionization cross sections and the precursor-specific absolute partial ionization cross sections of resulting fragment ions are obtained and reported. It is found that {approx}75% of single ionization, 22% of double ionization, and {approx}2% of triple ionization of the parent molecule contribute to the total fragment ion yield; quadruple ionization of CO{sub 2} is found to make a negligibly small contribution. Furthermore, the absolute partial ionization cross sections for ion-pair and ion-triple formation are measured for nine dissociative ionization channels of up to a quadruply ionized CO{sub 2} molecule. In addition, the branching ratios for single-ion, ion-pair, and ion-triple formation are also determined.

Bhatt, Pragya; Singh, Raj; Yadav, Namita; Shanker, R. [Atomic Physics Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221005 (India)

2011-10-15T23:59:59.000Z

500

Graphite Oxidation Thermodynamics/Reactions  

SciTech Connect

The vulnerability of graphite-matrix spent nuclear fuel to oxidation by the ambient atmosphere if the fuel canister is breached was evaluated. Thermochemical and kinetic data over the anticipated range of storage temperatures (200 to 400 C) were used to calculate the times required for a total carbon mass loss of 1 mgcm-2 from a fuel specimen. At 200 C, the time required to produce even this small loss is large, 900,000 yr. However, at 400 C the time required is only 1.9 yr. The rate of oxidation at 200 C is negligible, and the rate even at 400 C is so small as to be of no practical consequence. Therefore, oxidation of the spent nuclear fuel upon a loss of canister integrity is not anticipated to be a concern based upon the results of this study.

Propp, W.A.

1998-09-01T23:59:59.000Z