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1

Alternative Fuels Data Center: Mass Transit  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Mass Transit to Mass Transit to someone by E-mail Share Alternative Fuels Data Center: Mass Transit on Facebook Tweet about Alternative Fuels Data Center: Mass Transit on Twitter Bookmark Alternative Fuels Data Center: Mass Transit on Google Bookmark Alternative Fuels Data Center: Mass Transit on Delicious Rank Alternative Fuels Data Center: Mass Transit on Digg Find More places to share Alternative Fuels Data Center: Mass Transit on AddThis.com... More in this section... Idle Reduction Parts & Equipment Maintenance Driving Behavior Fleet Rightsizing System Efficiency Ridesharing Mass Transit Active Transit Multi-Modal Transportation Telework Mass Transit Passenger-Miles per Gallon Passenger-miles per gallon (pmpg) is a metric for comparing mass transit and rideshare with typical passenger vehicle travel. Transportation system

2

A PARALLAX DISTANCE AND MASS ESTIMATE FOR THE TRANSITIONAL MILLISECOND PULSAR SYSTEM J1023+0038  

SciTech Connect (OSTI)

The recently discovered transitional millisecond pulsar system J1023+0038 exposes a crucial evolutionary phase of recycled neutron stars for multiwavelength study. The system, comprising the neutron star itself, its stellar companion, and the surrounding medium, is visible across the electromagnetic spectrum from the radio to X-ray/gamma-ray regimes and offers insight into the recycling phase of millisecond pulsar evolution. Here, we report on multiple-epoch astrometric observations with the Very Long Baseline Array (VLBA) which give a system parallax of 0.731 {+-} 0.022 milliarcseconds (mas) and a proper motion of 17.98 {+-} 0.05 mas yr{sup -1}. By combining our results with previous optical observations, we are able to use the parallax distance of 1368{sup +42}{sub -{sub 39}} pc to estimate the mass of the pulsar to be 1.71 {+-} 0.16 M{sub Sun }, and we are also able to measure the three-dimensional space velocity of the system to be 126 {+-} 5 km s{sup -1}. Despite the precise nature of the VLBA measurements, the remaining {approx}3% distance uncertainty dominates the 0.16 M{sub Sun} error on our mass estimate.

Deller, A. T. [Netherlands Institute for Radio Astronomy (ASTRON), 7990-AA Dwingeloo (Netherlands); Archibald, A. M.; Kaspi, V. M. [Department of Physics, McGill University, 3600 University Street, Montreal, QC H3A 2T8 (Canada); Brisken, W. F. [National Radio Astronomy Observatory, Socorro, NM 87801 (United States); Chatterjee, S. [Astronomy Department, Cornell University, Ithaca, NY 14853 (United States); Janssen, G. H.; Lyne, A. G.; Stappers, B. [Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom); Lorimer, D.; McLaughlin, M. A. [Department of Physics, West Virginia University, Morgantown, WV 26506 (United States); Ransom, S. [National Radio Astronomy Observatory, Charlottesville, VA 22903 (United States); Stairs, I. H. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada)

2012-09-10T23:59:59.000Z

3

Electric and Magnetic Screening Masses around the Deconfinement Transition  

E-Print Network [OSTI]

We report on the status of our study of gluon propagators and screening masses around the de- confining transition for pure SU(2) gauge theory in Landau gauge.

Attilio Cucchieri; Tereza Mendes

2012-01-29T23:59:59.000Z

4

Phase Transition in a Model Gravitating System  

Science Journals Connector (OSTI)

We present recent developments in the study of an interacting gravitational system of concentric, spherical, mass shells. The existence of two distinct phases is demonstrated. The nature of the transition in the microcanonical, canonical, and grand canonical ensembles is studied both theoretically in terms of mean field theory and via dynamical simulation. Striking differences are found in each environment, especially the last.

Bruce N. Miller and Paige Youngkins

1998-11-30T23:59:59.000Z

5

Phase Transitions and Bounds in Higgs-Boson Masses  

Science Journals Connector (OSTI)

Upper bounds on the critical temperature are found in terms of the Higgs-boson mass in SU(N) and SU(2) ? U(1) gauge theories. Also, an upper bound on the Higgs-boson mass as a function of the supercooling ratio is found, provided that quantum tunneling is not sufficient to complete the phase transition from a symmetric phase to a broken phase.

J. J. G. Scanio and P. Suranyi

1981-05-18T23:59:59.000Z

6

Transition of Iodine Analysis to Accelerator Mass Spectrometry  

SciTech Connect (OSTI)

This NA 22 funded research project investigated the transition of iodine isotopic analyses from thermal ionization mass spectrometry (TIMS) to an accelerator mass spectrometry (AMS) system. Previous work (Fiscal Year 2010) had demonstrated comparable data from TIMS and AMS. With AMS providing comparable data with improved background levels and vastly superior sample throughput, improvement in the sample extraction from environmental sample matrices was needed to bring sample preparation throughput closer to the operation level of the instrument. Previous research used an extraction chemistry that was not optimized for yield or refined for reduced labor to prove the principle. This research was done to find an extraction with better yield using less labor per sample to produce a sample ready for the AMS instrument. An extraction method using tetramethyl ammonium hydroxide (TMAH) was developed for removal of iodine species from high volume air filters. The TMAH with gentle heating was superior to the following three extraction methods: ammonium hydroxide aided by sonication, acidic and basic extraction aided by microwave, and ethanol mixed with sodium hydroxide. Taking the iodine from the extraction solvent to being ready for AMS analysis was accomplished by a direct precipitation, as well as, using silver wool to harvest the iodine from the TMAH. Portions of the same filters processed in FY 2010 were processed again with the improved extraction scheme followed by successful analysis by AMS at the Swiss Federal Institute of Technology. The data favorably matched the data obtained in 2010. The time required for analysis has been reduced over the aqueous extraction/AMS approach developed in FY 2010. For a hypothetical batch of 30 samples, the AMS methodology is about 10 times faster than the traditional gas phase chemistry and TIMS analysis. As an additional benefit, background levels for the AMS method are about 1000 times lower than TIMS. This results from the fundamental mechanisms of ionization in the AMS system and which produces a beneficial cleanup of molecular interferences. Continued clean operation of the extraction process was demonstrated through blank analysis included with all sample sets analyzed. INL work showed improvement on the first year’s demonstration of AMS vs. TIMS. An improved extraction of high volume air filters followed by isotopic analysis by AMS, can be used successfully to make iodine measurements with results comparable to those obtained by filter combustion and TIMS analysis. More progress on the conversion from an extract solution to an AMS sample ready for analysis is still needed. Although the preparation scheme through AMS is already at a higher performing thoughput than TIMS, the chemical preparation cannot match the instrument capability for number of samples per day without further development.

M. L. Adamic; J. E. Olson; D. D. Jenson; J. G. Eisenmenger; M. G. Watrous

2012-09-01T23:59:59.000Z

7

Regional Transit System: Return on Investment Assessment  

E-Print Network [OSTI]

Regional Transit System: Return on Investment Assessment May 2014 #12;1 Today's agenda Itasca transit options Enables strategic, efficient investment in long-term infrastructure, e.g., energy grid are investing heavily in transit; these regions include Denver, Salt Lake City and Dallas, all rapidly growing

Minnesota, University of

8

Geographic Information System At Walker-Lane Transitional Zone Region  

Open Energy Info (EERE)

Walker-Lane Transitional Zone Region Walker-Lane Transitional Zone Region (Blackwell, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic Information System At Walker-Lane Transitional Zone Region (Blackwell, Et Al., 2003) Exploration Activity Details Location Walker-Lane Transition Zone Geothermal Region Exploration Technique Geographic Information System Activity Date Usefulness useful DOE-funding Unknown Notes Developed natural state mass and energy transport fluid flow models of generic Basin and Range systems based on Dixie Valley data that help to understand the nature of large scale constraints on the location and characteristics of the geothermal systems References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard

9

A Simulation Study of Demand Responsive Transit System Design  

E-Print Network [OSTI]

A Simulation Study of Demand Responsive Transit System Design Luca Quadrifoglio, Maged M. Dessouky changed the landscape for demand responsive transit systems. First, the demand for this type of transit experiencing increased usage for demand responsive transit systems. The National Transit Summaries and Trends

Dessouky, Maged

10

Resolving phase transitions in finite systems  

E-Print Network [OSTI]

Finite systems in confining potentials are known to undergo structural transitions similar to phase transitions. However, these systems are inhomogeneous, and their "melting" point may depend on the position in the trap and vary with the particle number. Focusing on three-dimensional Coulomb systems in a harmonic trap a rich physics is revealed: in addition to radial melting we demonstrate the existence of intrashell disordering and inter-shell angular melting. Our analysis takes advantage of a novel melting criterion that is based on the two and three-particle distribution functions and the associated reduced entropies which can be directly measured in complex plasma experiments.

Thomsen, H

2014-01-01T23:59:59.000Z

11

Advanced Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus Application  

Broader source: Energy.gov [DOE]

Design refinements of the GTB-40 mass-transit bus include new optimization processes, subsystem, and powertrain system requirements along with traction motor, battery, and APU development and integration

12

Metal-insulator transition in dilute alkali-metal systems  

Science Journals Connector (OSTI)

The metal-insulator transition is studied for dilute systems of alkali metals. Using a spin-split self-consistent band-structure approach, we find the transition density, a strikingly enhanced magnetic susceptibility, and the electron effective mass. The critical density nc is found to be given by the simple relation rsc=r0+2.8. Here rsc=[3(4?nc)]13 and r0 is the model potential radius which is roughly the radius of the neutral atom. The Mott criterion of nc13aB?0.25 (where aB is the appropriate Bohr orbit) is found to be inadequate for describing these systems. The predicted effective mass and magnetic susceptibility enhancements are largest for Li and become systematically smaller for the heavier alkalis. We compare our results for the transition density with two sets of experiments, namely the gas-liquid critical density and the metal-insulator transition for codeposited thick films of alkali-metal and rare-gas atoms. Good agreement is found in both cases.

J. H. Rose

1981-01-15T23:59:59.000Z

13

Moving mass trim control system design  

SciTech Connect (OSTI)

This paper describes the design of a moving mass trim control system for maneuvering axisymmetric reentry vehicles. The moving mass trim controller is composed of three equal masses that are independently positioned in order to deliver a desired center of mass position. For a slowly spinning reentry vehicle, the mass offset creates a trim angle-of-attack to generate modest flight path corrections. The control system must maintain the desired position of each mass in the face of large disturbances. A novel algorithm for determining the desired mass positions is developed in conjunction with a preliminary controller design. The controller design is based on classical frequency domain techniques where a bound on the disturbance magnitude is used to formulate the disturbance rejection problem. Simulation results for the controller are presented for a typical reentry vehicle.

Byrne, R.H.; Robinett, R.D.; Sturgis, B.R.

1996-03-01T23:59:59.000Z

14

Transit Timing Observations from Kepler. VI. Potentially Interesting Candidate Systems from Fourier-based Statistical Tests  

Science Journals Connector (OSTI)

We analyze the deviations of transit times from a linear ephemeris for the Kepler Objects of Interest (KOI) through quarter six of science data. We conduct two statistical tests for all KOIs and a related statistical test for all pairs of KOIs in multi-transiting systems. These tests identify several systems which show potentially interesting transit timing variations (TTVs). Strong TTV systems have been valuable for the confirmation of planets and their mass measurements. Many of the systems identified in this study should prove fruitful for detailed TTV studies.

Jason H. Steffen; Eric B. Ford; Jason F. Rowe; Daniel C. Fabrycky; Matthew J. Holman; William F. Welsh; Natalie M. Batalha; William J. Borucki; Steve Bryson; Douglas A. Caldwell; David R. Ciardi; Jon M. Jenkins; Hans Kjeldsen; David G. Koch; Andrej Prša; Dwight T. Sanderfer; Shawn Seader; Joseph D. Twicken

2012-01-01T23:59:59.000Z

15

Thermal rectification in quantum graded mass systems  

E-Print Network [OSTI]

We show the existence of thermal rectification in the graded mass quantum chain of harmonic oscillators with self-consistent reservoirs. Our analytical study allows us to identify the ingredients leading to the effect. The presence of rectification in this effective, simple model (representing graded mass materials, systems that may be constructed in practice) indicates that rectification in graded mass quantum systems may be an ubiquitous phenomenon. Moreover, as the classical version of this model does not present rectification, our results show that, here, rectification is a direct result of the quantum statistics.

Emmanuel Pereira

2010-03-01T23:59:59.000Z

16

Ohio Transit System Saves With Solar | Department of Energy  

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

Ohio Transit System Saves With Solar Ohio Transit System Saves With Solar Ohio Transit System Saves With Solar July 23, 2010 - 3:42pm Addthis METRO Regional Transit Authority of Akron, OH is installing a solar energy system such as this on the central bus barn's roof. | Energy Department Photo | METRO Regional Transit Authority of Akron, OH is installing a solar energy system such as this on the central bus barn's roof. | Energy Department Photo | Joshua DeLung What does this project do? The new PV solar energy system being installed by the METRO Regional Transit Authority of Akron, Ohio on their central bus barn roof is expected to meet 15 percent of the transit system's bus barn energy needs. Akron, OH anticipates $40,000 in annual energy savings once the project is complete. Updated Oct. 13, 2010.

17

Maximizing the benefits of mass transit stations : amenities, services, and the improvement of urban space within spaces  

E-Print Network [OSTI]

Little attention has been paid to the quality of the spaces within rapid mass transit stations in the United States, and their importance as places in and of themselves. For many city dwellers who rely on rapid transit ...

Montañez, Carlos Javier, 1975-

2004-01-01T23:59:59.000Z

18

The Multi Optical Transition Radiation System  

SciTech Connect (OSTI)

The determination and monitoring of the transverse phase space in ATF2 is crucial in order to meet their performances specifications. Since the beam sizes at the Interaction Point (IP) depend strongly on the aberrations in the Final Focus System (FFS), accurate measurement upstream of the FFS is required to tune the beam sizes at the IP. The beam sizes as well as the emittance are measured in several locations in the beam diagnostic section of the Extraction Line (EXT line) of ATF2. The vertical beam sizes in the diagnostic section are of the order of 10 {mu}m this means that the devices have to image spot sizes as small as 5 {mu}m, with 10% accuracy a 2 {mu}m resolution device is necessary. The ATF2 EXT line is a beam line with low power and low repetition rate that make usable devices using solid targets. In contrast to a ring machine, where an individual bunch can be measured many times as it passes around the ring, the beam size and the emittance measurement in the LC or in the beam lines have to be performed in a single pass. This requires that the wire scan device types (laser or solid) sample across successive bunches within a train, often with an over-estimation of the beam size due to beam position and intensity jitter, and can take up to half a minute to complete the measurement. Although some of these effects could be corrected, as the jitter effect could be subtracted by using the nearby BPMs signals, this can be avoided by using Optical Transition Radiation (OTR) Monitors. These monitors are based on the transition radiation effect, a light cone emitted when the charged particle crosses a metallic interface. This light is emitted in a specular fashion so it can be focused on to a CCD and produces an image of the beam. OTRs are able to take many fast measurements and therefore to measure the emittance with high statistics, giving a low error and a good understanding of the emittance jitter. In this article, simulations of the expected beam sizes and emittance, along with a technical description of the system, its hardware and software implementation are described. Additionally first measurement of the beam size and emittance of the Multi Optical Transition Radiation System located in the Extraction Line of ATF2 are presented.

Faus-Golfe, A.; Alabau-Gonzalvo, J.; Blanch Gutierrez, C.; /Valencia U., IFIC; McCormick, D.; Cruz, J.; Woodley, M.; White, G.; /SLAC

2012-04-19T23:59:59.000Z

19

Transit Timing Observations from Kepler: III. Confirmation of 4 Multiple Planet Systems by a Fourier-Domain Study of Anti-correlated Transit Timing Variations  

SciTech Connect (OSTI)

We present a method to confirm the planetary nature of objects in systems with multiple transiting exoplanet candidates. This method involves a Fourier-domain analysis of the deviations in the transit times from a constant period that result from dynamical interactions within the system. The combination of observed anticorrelations in the transit times and mass constraints from dynamical stability allow us to claim the discovery of four planetary systems, Kepler-25, Kepler-26, Kepler-27 and Kepler-28, containing eight planets and one additional planet candidate.

Steffen, Jason H.; /Fermilab; Fabrycky, Daniel C.; /Lick Observ.; Ford, Eric B.; /Florida U.; Carter, Joshua A.; /Harvard-Smithsonian Ctr. Astrophys.; Fressin, Francois; /Harvard-Smithsonian Ctr. Astrophys.; Holman, Matthew J.; /Harvard-Smithsonian Ctr. Astrophys.; Lissauer, Jack J.; /NASA, Ames; Rowe, Jason F.; /SETI Inst., Mtn. View /NASA, Ames; Ragozzine, Darin; /Harvard-Smithsonian Ctr. Astrophys.; Welsh, William F.; /Caltech; Borucki, William J.; /NASA, Ames /UC, Santa Barbara

2012-01-01T23:59:59.000Z

20

Soil Vapor Extraction System Optimization, Transition, and Closure Guidance  

SciTech Connect (OSTI)

Soil vapor extraction (SVE) is a prevalent remediation approach for volatile contaminants in the vadose zone. A diminishing rate of contaminant extraction over time is typically observed due to 1) diminishing contaminant mass, and/or 2) slow rates of removal for contamination in low-permeability zones. After a SVE system begins to show indications of diminishing contaminant removal rate, SVE performance needs to be evaluated to determine whether the system should be optimized, terminated, or transitioned to another technology to replace or augment SVE. This guidance specifically addresses the elements of this type of performance assessment. While not specifically presented, the approach and analyses in this guidance could also be applied at the onset of remediation selection for a site as a way to evaluate current or future impacts to groundwater from vadose zone contamination. The guidance presented here builds from existing guidance for SVE design, operation, optimization, and closure from the U.S. Environmental Protection Agency, U.S. Army Corps of Engineers, and the Air Force Center for Engineering and the Environment. The purpose of the material herein is to clarify and focus on the specific actions and decisions related to SVE optimization, transition, and/or closure.

Truex, Michael J.; Becker, Dave; Simon, Michelle A.; Oostrom, Martinus; Rice, Amy K.; Johnson, Christian D.

2013-02-08T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

NNSA, Djibouti Transition Radiation Detection System | National...  

National Nuclear Security Administration (NNSA)

Related News DOENNSA Participates in Large-Scale CTBT On-Site Inspection Exercise in Jordan Charles E. Messick receives the Administrator's Gold Award NNSA, Argentina Transition...

22

Flexible metallic seal for transition duct in turbine system  

SciTech Connect (OSTI)

A turbine system is disclosed. In one embodiment, the turbine system includes a transition duct. The transition duct includes an inlet, an outlet, and a passage extending between the inlet and the outlet and defining a longitudinal axis, a radial axis, and a tangential axis. The outlet of the transition duct is offset from the inlet along the longitudinal axis and the tangential axis. The transition duct further includes an interface member for interfacing with a turbine section. The turbine system further includes a flexible metallic seal contacting the interface member to provide a seal between the interface member and the turbine section.

Flanagan, James Scott; LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Dillard, Daniel Jackson; Pentecost, Ronnie Ray

2014-04-22T23:59:59.000Z

23

Pervasive Computing Support in the Transition towards Personalised Health Systems  

Science Journals Connector (OSTI)

This paper discusses pervasive computing work in the transition from traditional health care programs to personalised health systems pHealth. A chronological guided transition survey is discussed to highlight trends in medicine describing their most ... Keywords: Emerging Communication Technologies, Healthcare, Keywords: Computer Science, Personalised Health Systems, Pervasive Computing, eHealth, pHealth

Martín Serrano, Ahmed Elmisery, Mícheál Ó Foghlú, Willie Donnelly, Cristiano Storni, Mikael Fernström

2011-07-01T23:59:59.000Z

24

Optimized pulse sequences for suppressing unwanted transitions in quantum systems  

SciTech Connect (OSTI)

We investigate the nature of the pulse sequence so that unwanted transitions in quantum systems can be inhibited optimally. For this purpose we show that the sequence of pulses proposed by Uhrig [Phys. Rev. Lett. 98, 100504 (2007)] in the context of inhibition of environmental dephasing effects is optimal. We derive exact results for inhibiting the transitions and confirm the results numerically. We posit a very significant improvement by usage of the Uhrig sequence over an equidistant sequence in decoupling a quantum system from unwanted transitions. The physics of inhibition is the destructive interference between transition amplitudes before and after each pulse.

Schroeder, C. A.; Agarwal, G. S. [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks St. Norman, Oklahoma 73019 (United States); Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)

2011-01-15T23:59:59.000Z

25

Mass spectrometer vacuum housing and pumping system  

DOE Patents [OSTI]

A vacuum housing and pumping system for a portable gas chromatograph/mass spectrometer (GC/MS). The vacuum housing section of the system has minimum weight for portability while designed and constructed to utilize metal gasket sealed stainless steel to be compatible with high vacuum operation. The vacuum pumping section of the system consists of a sorption (getter) pump to remove atmospheric leakage and outgassing contaminants as well as the gas chromatograph carrier gas (hydrogen) and an ion pump to remove the argon from atmospheric leaks. The overall GC/MS system has broad application to contaminants, hazardous materials, illegal drugs, pollution monitoring, etc., as well as for use by chemical weapon treaty verification teams, due to the light weight and portability thereof.

Coutts, Gerald W. (Livermore, CA); Bushman, John F. (Oakley, CA); Alger, Terry W. (Tracy, CA)

1996-01-01T23:59:59.000Z

26

Mass spectrometer vacuum housing and pumping system  

DOE Patents [OSTI]

A vacuum housing and pumping system is described for a portable gas chromatograph/mass spectrometer (GC/MS). The vacuum housing section of the system has minimum weight for portability while designed and constructed to utilize metal gasket sealed stainless steel to be compatible with high vacuum operation. The vacuum pumping section of the system consists of a sorption (getter) pump to remove atmospheric leakage and outgassing contaminants as well as the gas chromatograph carrier gas (hydrogen) and an ion pump to remove the argon from atmospheric leaks. The overall GC/MS system has broad application to contaminants, hazardous materials, illegal drugs, pollution monitoring, etc., as well as for use by chemical weapon treaty verification teams, due to the light weight and portability thereof. 7 figs.

Coutts, G.W.; Bushman, J.F.; Alger, T.W.

1996-07-23T23:59:59.000Z

27

Phase transitions in the adsorption system Li/Mo(112)  

E-Print Network [OSTI]

Experimental studies of the phase transitions in the adsorption system Li/Mo(112) are presented. This system is a model system for highly anisotropic interactions. From measurements of the half-widths of the low-energy electron diffraction spot...

Fedorus, A.; Kolthoff, D.; Koval, V.; Lyuksyutov, Igor F.; Naumovets, AG; Pfnur, H.

2000-01-01T23:59:59.000Z

28

Sensitivity of transitions in internal rotor molecules to a possible variation of the proton-to-electron mass ratio  

SciTech Connect (OSTI)

Recently, methanol was identified as a sensitive target system to probe variations of the proton-to-electron mass ratio {mu}[Jansen et al., Phys. Rev. Lett. 106, 100801 (2011)]. The high sensitivity of methanol originates from the interplay between overall rotation and hindered internal rotation of the molecule; that is, transitions that convert internal rotation energy into overall rotation energy, or vice versa, have an enhanced sensitivity coefficient, K{sub {mu}}. As internal rotation is a common phenomenon in polyatomic molecules, it is likely that other molecules display similar or even larger effects. In this paper we generalize the concepts that form the foundation of the high sensitivity in methanol and use this to construct an approximate model which makes it possible to estimate the sensitivities of transitions in internal rotor molecules with C{sub 3v} symmetry, without performing a full calculation of energy levels. We find that a reliable estimate of transition sensitivities can be obtained from the three rotational constants (A, B, and C) and three torsional constants (F, V{sub 3}, and {rho}). This model is verified by comparing obtained sensitivities for methanol, acetaldehyde, acetamide, methyl formate, and acetic acid with a full analysis of the molecular Hamiltonian. Of the molecules considered, methanol is by far the most suitable candidate for laboratory and cosmological tests searching for a possible variation of {mu}.

Jansen, Paul; Ubachs, Wim; Bethlem, Hendrick L. [Institute for Lasers, Life and Biophotonics, VU University Amsterdam, De Boelelaan 1081, NL-1081 HV Amsterdam (Netherlands); Kleiner, Isabelle [Laboratoire Interuniversitaire des Systemes Atmospheriques (LISA), CNRS UMR 7583 et Universites Paris 7 et Paris Est, 61 avenue du General de Gaulle, FR-94010 Creteil Cedex (France); Xu, Li-Hong [Department of Physics and Centre for Laser, Atomic, and Molecular Sciences, University of New Brunswick, Saint John, New Brunswick, Canada E2L 4L5 (Canada)

2011-12-15T23:59:59.000Z

29

System Transition: Dynamics of Change in the US Air TransportationSystem  

E-Print Network [OSTI]

System Transition: Dynamics of Change in the US Air TransportationSystem by Aleksandra L Education Committee #12;#12;System Transition: Dynamics of Change in the US Air Transportation System of the requirements for the degree of Doctor of Philosophy in Technology, Management, and Policy Abstract The US Air

de Weck, Olivier L.

30

Clean air. Safe, congestion-free highways and transit systems.  

E-Print Network [OSTI]

of people and goods within America's transportation systems. Vehicle Research is under way to reduce cost challenges associated with vehicle technologies. ORNL also conducts research on internal combustion engine#12;2 Clean air. Safe, congestion-free highways and transit systems. Efficient vehicles powered

Pennycook, Steve

31

Battery Transition Systems The Interdisciplinary Center, Herzliya,  

E-Print Network [OSTI]

. Introduction Systems with limited energy resources, such as mobile devices or electric cars, have become Abstract The analysis of the energy consumption of software is an impor- tant goal for quantitative formal

Boker, Udi

32

TRANSIT TIMING VARIATION OF NEAR-RESONANCE PLANETARY PAIRS: CONFIRMATION OF 12 MULTIPLE-PLANET SYSTEMS  

SciTech Connect (OSTI)

We extract transit timing variation (TTV) signals for 12 pairs of transiting planet candidates that are near first-order mean motion resonances (MMR), using publicly available Kepler light curves (Q0-Q14). These pairs show significant sinusoidal TTVs with theoretically predicted periods, which demonstrate these planet candidates are orbiting and interacting in the same system. Although individual masses cannot be accurately extracted based only on TTVs because of the well-known degeneracy between mass and eccentricity, TTV phases and amplitudes can still place upper limits on the masses of the candidates, confirming their planetary nature. Furthermore, the mass ratios of these planet pairs can be relatively tightly constrained using these TTVs. The planetary pair in KOI 880 seems to have particularly high mass and density ratios, which might indicate very different internal compositions of these two planets. Some of these newly confirmed planets are also near MMR with other candidates in the system, forming unique resonance chains (e.g., KOI 500)

Xie, Ji-Wei, E-mail: xiejiwei@gmail.com, E-mail: jwxie@astro.utoronto.ca [Department of Astronomy and Key Laboratory of Modern Astronomy and Astrophysics in Ministry of Education, Nanjing University, Nanjing 210093 (China)

2013-10-01T23:59:59.000Z

33

Transit Timing Observations from Kepler: IV. Confirmation of 4 Multiple Planet Systems by Simple Physical Models  

SciTech Connect (OSTI)

Eighty planetary systems of two or more planets are known to orbit stars other than the Sun. For most, the data can be sufficiently explained by non-interacting Keplerian orbits, so the dynamical interactions of these systems have not been observed. Here we present 4 sets of lightcurves from the Kepler spacecraft, which each show multiple planets transiting the same star. Departure of the timing of these transits from strict periodicity indicates the planets are perturbing each other: the observed timing variations match the forcing frequency of the other planet. This confirms that these objects are in the same system. Next we limit their masses to the planetary regime by requiring the system remain stable for astronomical timescales. Finally, we report dynamical fits to the transit times, yielding possible values for the planets masses and eccentricities. As the timespan of timing data increases, dynamical fits may allow detailed constraints on the systems architectures, even in cases for which high-precision Doppler follow-up is impractical.

Fabrycky, Daniel C.; /UC, Santa Cruz; Ford, Eric B.; /Florida U.; Steffen, Jason H.; /Fermilab; Rowe, Jason F.; /SETI Inst., Mtn. View /NASA, Ames; Carter, Joshua A.; /Harvard-Smithsonian Ctr. Astrophys.; Moorhead, Althea V.; /Florida U.; Batalha, Natalie M.; /San Jose State U.; Borucki, William J.; /NASA, Ames; Bryson, Steve; /NASA, Ames; Buchhave, Lars A.; /Bohr Inst. /Copenhagen U.; Christiansen, Jessie L.; /SETI Inst., Mtn. View /NASA, Ames /Caltech

2012-01-01T23:59:59.000Z

34

Geographic Information System At Walker-Lane Transitional Zone Region  

Open Energy Info (EERE)

Geographic Information System At Walker-Lane Geographic Information System At Walker-Lane Transitional Zone Region (Laney, 2005) Exploration Activity Details Location Walker-Lane Transition Zone Geothermal Region Exploration Technique Geographic Information System Activity Date Usefulness useful regional reconnaissance DOE-funding Unknown Notes Regional Assessment of Exploration Potential for Geothermal Systems in The Great Basin Using a Geographic Information System (GIS) - Part II, Coolbaugh, Zehner, Raines, Shevenell, Minor, Sawatzky and Oppliger. The objective is to generate new exploration targets for both conventional and EGS capable geothermal systems by analyzing regional data in a GIS. Digital geothermal data will be made available to industry and researchers on a web site. Relationships among the data will be explored using spatial

35

THE HOMOGENEOUS STUDY OF TRANSITING SYSTEMS (HoSTS). I. THE PILOT STUDY OF WASP-13  

SciTech Connect (OSTI)

We present the fundamental stellar and planetary properties of the transiting planetary system WASP-13 within the framework of the Homogeneous Study of Transiting Systems (HoSTS). HoSTS aims to derive the fundamental stellar (T{sub eff}, [Fe/H], M{sub *}, R{sub *}) and planetary (M{sub pl}, R{sub pl}, T{sub eq}) physical properties of known transiting planets using a consistent methodology and homogeneous high-quality data set. Four spectral analysis techniques are independently applied to a Keck+HIRES spectrum of WASP-13 considering two distinct cases: unconstrained parameters and constrained log g from transit light curves. We check the derived stellar temperature against that from a different temperature diagnostic based on an INT+IDS H{alpha} spectrum. The four unconstrained analyses render results that are in good agreement, and provide an improvement of 50% in the precision of T{sub eff}, and of 85% in [Fe/H] with respect to the WASP-13 discovery paper. The planetary parameters are then derived via the Monte Carlo Markov Chain modeling of the radial velocity and light curves, in iteration with stellar evolutionary models to derive realistic uncertainties. WASP-13 (1.187 {+-} 0.065 M{sub Sun }; 1.574 {+-} 0.048 R{sub Sun }) hosts a Saturn-mass, transiting planet (0.500 {+-} 0.037 M{sub Jup}; 1.407 {+-} 0.052 R{sub Jup}), and is at the end of its main-sequence lifetime (4-5.5 Gyr). Our analysis of WASP-13 showcases that both a detailed stellar characterization and transit modeling are necessary to well determine the fundamental properties of planetary systems, which are paramount in identifying and determining empirical relationships between transiting planets and their hosts.

Gomez Maqueo Chew, Yilen; Cargile, Phillip; Hebb, Leslie; Stassun, Keivan G. [Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States); Faedi, Francesca; Pollacco, Don [Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Doyle, Amanda P.; Smalley, Barry [Astrophysics Group, Keele University, Staffordshire ST5 5BG (United Kingdom); Ghezzi, Luan; Cunha, Katia; Smith, Verne V. [Observatorio Nacional, Rua Gal. Jose Cristino 77, Rio de Janeiro, RJ 20921-400 (Brazil); Sousa, Sergio; Santos, Nuno C. [Centro de Astrofisica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto (Portugal); Barros, Susana C. C. [LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, Aix Marseille Universite, CNRS, F-13388 Marseille (France); Schuler, Simon C. [Stewart Observatory, University of Arizona, Tucson, AZ 85721 (United States); Collier Cameron, Andrew, E-mail: yilen.gomez@vanderbilt.edu [School of Physics and Astronomy, University of St Andrews, St Andrews, Fife KY16 9SS (United Kingdom)

2013-05-01T23:59:59.000Z

36

QUANTUM DYNAMICS OF TRANSITION PROCESSES IN THE INTERACTING SYSTEMS  

E-Print Network [OSTI]

for the description of the simultaneous quantum dynamics of the open and closed string fields in the unified string transition processes as well as stationary regimes in pairs of the interacting systems with auto--oscillations of the simultaneous quan­ tum dynamics of closed and open string fields in the unified string field theory

37

Mass Tracking System Software [Nuclear Waste Management using  

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

Mass Tracking System Mass Tracking System Software Nuclear Fuel Cycle and Waste Management Technologies Overview Modeling and analysis Unit Process Modeling Mass Tracking System Software Waste Form Performance Modeling Safety Analysis, Hazard and Risk Evaluations Development, Design, Operation Overview Systems and Components Development Expertise System Engineering Design Other Major Programs Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE Division on Flickr Nuclear Waste Management using Electrometallurgical Technology Mass Tracking System Software Bookmark and Share The NE Division has developed a computer-based Mass Tracking (MTG) system, which is used at the Idaho National Laboratory Fuel Conditioning Facility (FCF) to maintain a real-time accounting of the inventory of containers and

38

Many-body energy localization transition in periodically driven systems  

SciTech Connect (OSTI)

According to the second law of thermodynamics the total entropy of a system is increased during almost any dynamical process. The positivity of the specific heat implies that the entropy increase is associated with heating. This is generally true both at the single particle level, like in the Fermi acceleration mechanism of charged particles reflected by magnetic mirrors, and for complex systems in everyday devices. Notable exceptions are known in noninteracting systems of particles moving in periodic potentials. Here the phenomenon of dynamical localization can prevent heating beyond certain threshold. The dynamical localization is known to occur both at classical (Fermi–Ulam model) and at quantum levels (kicked rotor). However, it was believed that driven ergodic systems will always heat without bound. Here, on the contrary, we report strong evidence of dynamical localization transition in both classical and quantum periodically driven ergodic systems in the thermodynamic limit. This phenomenon is reminiscent of many-body localization in energy space. -- Highlights: •A dynamical localization transition in periodically driven ergodic systems is found. •This phenomenon is reminiscent of many-body localization in energy space. •Our results are valid for classical and quantum systems in the thermodynamic limit. •At critical frequency, the short time expansion for the evolution operator breaks down. •The transition is associated to a divergent time scale.

D’Alessio, Luca, E-mail: dalessio@buphy.bu.edu [Physics Department, Boston University, Boston, MA 02215 (United States) [Physics Department, Boston University, Boston, MA 02215 (United States); Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106 (United States); Polkovnikov, Anatoli, E-mail: asp@bu.edu [Physics Department, Boston University, Boston, MA 02215 (United States)] [Physics Department, Boston University, Boston, MA 02215 (United States)

2013-06-15T23:59:59.000Z

39

Applications of HVAC System Utilizing Building Thermal Mass in Japan  

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

Applications of HVAC System Utilizing Building Thermal Mass in Japan Applications of HVAC System Utilizing Building Thermal Mass in Japan Speaker(s): Katsuhiro Miura Date: January 27, 2012 - 10:00am Location: 90-3122 Seminar Host/Point of Contact: Michael Wetter Buildings have a large thermal capacity and it affects much on building thermal load for the HVAC system. The thermal mass can be utilized also to control the thermal load by storing thermal energy before HVAC operation. There are two ways to store thermal energy. One is by operating the HVAC system and the other is by natural ventilation, mainly at night. The latter could be combined with daily HVAC operation as a hybrid ventilation. Thermal mass storage is useful to decrease the hourly peak load and the daily thermal load and can be used for both cooling and heating purpose.

40

Aerosol mass spectrometry systems and methods  

DOE Patents [OSTI]

A system according to one embodiment includes a particle accelerator that directs a succession of polydisperse aerosol particles along a predetermined particle path; multiple tracking lasers for generating beams of light across the particle path; an optical detector positioned adjacent the particle path for detecting impingement of the beams of light on individual particles; a desorption laser for generating a beam of desorbing light across the particle path about coaxial with a beam of light produced by one of the tracking lasers; and a controller, responsive to detection of a signal produced by the optical detector, that controls the desorption laser to generate the beam of desorbing light. Additional systems and methods are also disclosed.

Fergenson, David P.; Gard, Eric E.

2013-08-20T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

Renormalization-group study of one-dimensional systems with roughening transitions G. Bianconi,1  

E-Print Network [OSTI]

Renormalization-group study of one-dimensional systems with roughening transitions G. Bianconi,1 M different phases and a directed percolation-related roughening transition. The renormalization method of them there is a roughening transition. Apart of being a milestone in surface-growth theory, the KPZ

Gabrielli, Andrea

42

Uncertainties in nuclear transition matrix elements for neutrinoless ?? decay: The heavy Majorana neutrino mass mechanism  

Science Journals Connector (OSTI)

Employing four different parametrizations of the pairing plus the multipolar type of effective two-body interaction and three different parametrizations of the Jastrow type of short-range correlations, the uncertainties in the nuclear transition matrix elements MN0? due to the exchange of heavy Majorana neutrino for the 0+?0+ transition of neutrinoless double beta decay of 94Zr, 96Zr, 98Mo, 100Mo, 104Ru, 110Pd, 128,130Te, and 150Nd isotopes in the PHFB model are estimated to be around 35%. Excluding the nuclear transition matrix elements calculated with the Miller-Spencer parametrization of Jastrow short-range correlations, the uncertainties are found to be smaller than 20%.

P. K. Rath, R. Chandra, P. K. Raina, K. Chaturvedi, and J. G. Hirsch

2012-01-11T23:59:59.000Z

43

Phase transition in compressible Ising systems at fixed volume Akira Onuki and Akihiko Minami  

E-Print Network [OSTI]

Phase transition in compressible Ising systems at fixed volume Akira Onuki and Akihiko Minami transition behavior of compressible Ising systems at constant volume by varying the temperature. Simulations have been performed on compressible Ising systems and a number of numerical results still remain

44

Evaluation of Transit Operations: Data Applications of Tri-Met's Automated Bus Dispatching System  

E-Print Network [OSTI]

Evaluation of Transit Operations: Data Applications of Tri-Met's Automated Bus Dispatching System Dispatch System Tri-Met's BDS was installed in 1997 and became fully operational in 1998. Its main features Transportation System (APTS) technology has been motivated by transit providers' desire to improve service

Bertini, Robert L.

45

Sudden loss of mass from a binary gravitating system  

Science Journals Connector (OSTI)

A recent discussion by Mitalas is generalized to treat sudden mass loss from a binary system in an originally e l l i p t i c a l orbit. Emphasis is placed on characterizing the orbits by angular momentum and energy and it is shown that none of the changes in the r e l a t i v e orbit depends on which object loses part of its mass; indeed in principle each could lose a different fraction. Time averages are introduced so that the orbital changes which depend on w h e r e in orbit the mass loss occurs can be suitably averaged over a statistical ensemble of initial systems. Although I present several results that appear to be new (such as a unique relation between the increase in the semimajor axis and the change in eccentricity independent of the orbital phase at the moment of mass loss) the main thrust is to choose and manipulate variables yielding the greatest economy of description and the greatest power of computation. (All calculations were easily done on a pocket calculator.) Graphs are presented showing the fraction of systems that on the average will be disrupted the mean orbital changes for the survivors (which can easily turn out to have s m a l l e r mean eccentricity than the progenitors) and the extreme limits for the change in eccentricity.

Peter D. Noerdlinger

1982-01-01T23:59:59.000Z

46

NNSA Transitions Radiation Detection System at Port of Laem Chabang...  

National Nuclear Security Administration (NNSA)

Related News DOENNSA Participates in Large-Scale CTBT On-Site Inspection Exercise in Jordan Charles E. Messick receives the Administrator's Gold Award NNSA, Argentina Transition...

47

Mass independent kinetic energy reducing inlet system for vacuum environment  

DOE Patents [OSTI]

A particle inlet system comprises a first chamber having a limiting orifice for an incoming gas stream and a micrometer controlled expansion slit. Lateral components of the momentum of the particles are substantially cancelled due to symmetry of the configuration once the laminar flow converges at the expansion slit. The particles and flow into a second chamber, which is maintained at a lower pressure than the first chamber, and then moves into a third chamber including multipole guides for electromagnetically confining the particle. The vertical momentum of the particles descending through the center of the third chamber is minimized as an upward stream of gases reduces the downward momentum of the particles. The translational kinetic energy of the particles is near-zero irrespective of the mass of the particles at an exit opening of the third chamber, which may be advantageously employed to provide enhanced mass resolution in mass spectrometry.

Reilly, Peter T.A.

2014-05-13T23:59:59.000Z

48

Probing the geometric nature of particles mass in graphene systems  

E-Print Network [OSTI]

According to undulatory mechanics, the Compton periodicity, which is the intrinsic proper-time recurrence of a wave function, determines the mass of the corresponding elementary particles. This provides a geometric description of the rest mass which can be consistently applied to derive the effective mass spectrum and electronic properties of the elementary charge carriers in carbon nanotubes and other condensed matter systems. The Compton periodicity is determined by the boundary conditions associated to the curled-up dimension of carbon nanotubes or analogous constraints of the charge carrier wave function. This approach shows an interesting interplay between particle physics and relativistic space-time, as well as analogies with the Kaluza-Klein theory and Holography.

Donatello Dolce; Andrea Perali

2014-03-13T23:59:59.000Z

49

Mass independent kinetic energy reducing inlet system for vacuum environment  

DOE Patents [OSTI]

A particle inlet system comprises a first chamber having a limiting orifice for an incoming gas stream and a micrometer controlled expansion slit. Lateral components of the momentum of the particles are substantially cancelled due to symmetry of the configuration once the laminar flow converges at the expansion slit. The particles and flow into a second chamber, which is maintained at a lower pressure than the first chamber, and then moves into a third chamber including multipole guides for electromagnetically confining the particle. The vertical momentum of the particles descending through the center of the third chamber is minimized as an upward stream of gases reduces the downward momentum of the particles. The translational kinetic energy of the particles is near-zero irrespective of the mass of the particles at an exit opening of the third chamber, which may be advantageously employed to provide enhanced mass resolution in mass spectrometry.

Reilly, Peter T. A. [Knoxville, TN

2010-12-14T23:59:59.000Z

50

The structural evolution in transitional nuclei of mass 80 $\\leq$ A $\\leq$ 132  

E-Print Network [OSTI]

In this theoretical study, we report an investigation on the behavior of two neutron separation energy, differential variation of the separation energy and the abnormality in nuclear charge radius along the isotopic and isotonic chains of transition nuclei. We have used relativistic mean field formalism with NL3 and NL3$^*$ forces for this present analysis. The study refers to {\\it even-even} nuclei such as Zr, Mo, Ru and Pd with $N$ = 40$-$ 86, where a rich collective phenomena such as proton radioactivity, cluster or nucleus radioactivity, exotic shapes, {\\it Island of Inversion} and etc. are observed. These non-monotonic aspects over the isotopic chain are mainly correlated with the structural properties like shell/sub-shell closures, shape transition, clustering and magicity etc. In addition to these, we have shown the internal configuration of these nuclei to get a further insight into the reason for these discrepancies.

Bhuyan, M

2015-01-01T23:59:59.000Z

51

Modelling and Verification of Automated Transit Systems, Using Timed Automata, Invariants and  

E-Print Network [OSTI]

Modelling and Verification of Automated Transit Systems, Using Timed Automata, Invariants in automated transit systems. The problems we consider are in- spired by design work in the Personal Rapid and Simulations Nancy Lynch * Laboratory for Computer Science, Massachusetts Institute of Technology, Cambridge

Lynch, Nancy

52

Modelling and Veri cation of Automated Transit Systems, using Timed Automata, Invariants and  

E-Print Network [OSTI]

Modelling and Veri cation of Automated Transit Systems, using Timed Automata, Invariants in automated transit systems. The problems we consider are in- spired by design work in the Personal Rapid and Simulations Nancy Lynch ? Laboratory for Computer Science, Massachusetts Institute of Technology, Cambridge

Lynch, Nancy

53

System parameters and measurement instrument parameters are not separately observable: Relational mass is observable while absolute mass is not  

E-Print Network [OSTI]

A brief summary of the objections to the relational nature of inertial mass, gravitational mass and electric charge is presented. The objections are refuted by showing that the measurement process of comparing an instrument reference clock and a reference rod both obeying the laws of physics to a system obeying the same laws of physics results in relational quantities: inertial mass, gravitational mass and electric charge appear only as ratios. This means that scaling of the absolute inertial mass of every object in the universe by the same factor is unobservable (likewise for gravitational mass and electric charge). It is shown that the measurement process does not separate the instrument parameters from the system parameters. Instead a measurement produces functions of fundamental, dimensionless parameters such as the fine structure constant, electron-proton mass ratio and the proton gyro-magnetic factor. It is shown that the measurement of Planck's constant also results in such a function of these dimensio...

Holt, Craig R

2014-01-01T23:59:59.000Z

54

Contactless prepaid and bankcards in transit fare collection systems  

E-Print Network [OSTI]

Many public transit agencies are considering direct acceptance of contactless credit and debit cards (collectively contactless bankcards) at gates in rail stations and on board buses. Concerns have been raised about riders ...

Brakewood, Candace Elizabeth

2010-01-01T23:59:59.000Z

55

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems...  

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

07 Update Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Applications: 2007 Update This report estimates fuel cell system cost for systems...

56

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems...  

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

Application Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Application This report estimates fuel cell system cost for systems produced in the...

57

Alternative Fuels Data Center: Active Transit  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Active Transit to Active Transit to someone by E-mail Share Alternative Fuels Data Center: Active Transit on Facebook Tweet about Alternative Fuels Data Center: Active Transit on Twitter Bookmark Alternative Fuels Data Center: Active Transit on Google Bookmark Alternative Fuels Data Center: Active Transit on Delicious Rank Alternative Fuels Data Center: Active Transit on Digg Find More places to share Alternative Fuels Data Center: Active Transit on AddThis.com... More in this section... Idle Reduction Parts & Equipment Maintenance Driving Behavior Fleet Rightsizing System Efficiency Ridesharing Mass Transit Active Transit Multi-Modal Transportation Telework Active Transit Photo of people riding bikes. Active transit is human-powered transportation such as biking and walking. Active transportation eliminates vehicle miles traveled altogether, so this

58

Kinetic Pathways of Order-Disorder and Order-Order Transitions in Weakly Segregated Microstructured Systems  

Science Journals Connector (OSTI)

The kinetics of hexagonal to disordered and hexagonal to body-centered-cubic phase transitions in weakly segregated, microstructured systems (e.g., diblock copolymers) is studied using a time-dependent Ginzburg-Landau (TDGL) approach. Both computer simulation of the TDGL equation and analysis of a simplified two-mode model reveal nontrivial pathways during the transition.

Shuyan Qi and Zhen-Gang Wang

1996-03-04T23:59:59.000Z

59

Mass Production Cost Estimation of Direct H2 PEM Fuel Cell Systems...  

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

Mass Production Cost Estimation of Direct H2 PEM Fuel Cell Systems for Transportation Applications: 2013 Update Mass Production Cost Estimation of Direct H2 PEM Fuel Cell Systems...

60

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Application  

Broader source: Energy.gov [DOE]

This presentation reports on the status of mass production cost estimation for direct hydrogen PEM fuel cell systems.

Note: This page contains sample records for the topic "mass transit systems" 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

Transition to hexagonal pattern under the variation of intrinsic length scales of a reaction diffusion system  

Science Journals Connector (OSTI)

The intrinsic length scales of a reaction diffusion system (Gierer-Meinhardt model) is varied by quasi-statically changing the diffusion constant of the activator and a transition from rolls to hexagon is dete...

J. Sienkiewicz; A. Bhattacharyay

2004-07-01T23:59:59.000Z

62

Transitions from Hadley to Rossby Flows in Internally Forced Rotating Spherical Systems  

Science Journals Connector (OSTI)

The possibility of global-scale transitions between atmospheric Hadley and Rossby regimes is investigated with a highly idealized, nonlinear, vertically continuous, rotating, spherical system. Low-order spectral versions of the model are used ...

R. Wayne Higgins; Hampton N. Shirer

1990-05-01T23:59:59.000Z

63

Deep Convective Transition Characteristics in the Community Climate System Model and Changes under Global Warming  

Science Journals Connector (OSTI)

Tropical deep convective transition characteristics, including precipitation pickup, occurrence probability, and distribution tails related to extreme events, are analyzed using uncoupled and coupled versions of the Community Climate System Model (...

Sandeep Sahany; J. David Neelin; Katrina Hales; Richard B. Neale

2014-12-01T23:59:59.000Z

64

35M MAX: the first bus rapid transit system in Salt Lake County  

Science Journals Connector (OSTI)

Bus rapid transit (BRT) is becoming one of the most popular transit services in the USA. A total of 106 miles of BRT service is scheduled for deployment in the State of Utah in future years. This research looked at the first BRT deployment in West Valley City, Salt Lake County, Utah. The 10.8 miles long BRT line was launched on July 14, 2008, and shortly after the launching the first operational data became available. In addition, a series of surveys were conducted to gain feedback from the users of the BRT system. Preliminary results show significant improvements in transit operations, with a 33% increase in ridership, reductions of close to 15% in travel times and improved reliability. Survey results show a high degree of acceptance among the system users. In general, the BRT system has proven itself to be very successful, bringing significant improvements to transit riders.

Milan Zlatkovic; Aleksandar Stevanovic; Fabian Cevallos; Hal Ryan Johnson

2010-01-01T23:59:59.000Z

65

The smectite to chlorite transition in the Chipilapa geothermal system, El Salvador  

SciTech Connect (OSTI)

Clay mineralogical, X-ray diffraction and electron microprobe studies have been carried out on separated <2 {micro}m fractions from cutting and core material from three wells in the Chipilapa geothermal system in El Salvador. The data indicate that the smectite to chlorite transition is prevalent, but a secondary smectite to illite transition is also present. At depths approximately <750 m, smectite with very minor chlorite mixed-layers (approximately <15%) is dominant, and has a composition midway between a di- and tri-smectite. At {approximately}750 m there is a very clear distinction and sharp transition into discrete chlorite with very minor smectite mixed-layers (approximately <10%). Corrensite is recorded only as a rare and minor phase. Smectite occurs in abundance at temperatures up to {approximately}200 C, and the transition from a smectite-dominant to chlorite-dominant assemblage takes place over a narrow temperature range ({approximately}150 to 200 C). The stability range of smectite is very similar to that recorded in other geothermal systems, whereas the smectite to chlorite transition differs greatly from that recorded in other systems. The transition does not involve continuous chlorite/smectite mixed-layering but a marked step: It is the sharpest and most discontinuous stepped sequence of this mineralogical transition recorded.

Robinson, D. [Univ. of Bristol (United Kingdom). Dept. of Earth Sciences; Santana de Zamora, A. [Comision Ejecutiva Hidroelectrica del Rio Lempa (El Salvador)

1999-04-01T23:59:59.000Z

66

Controlling the dynamics of quantum mechanical systems sustaining dipole-forbidden transitions via optical nanoantennas  

Science Journals Connector (OSTI)

We suggest to excite dipole-forbidden transitions in quantum mechanical systems by using appropriately designed optical nanoantennas. The antennas are tailored such that their near field contains sufficiently strong contributions of higher-order multipole moments. The strengths of these moments exceed their free-space analogs by several orders of magnitude. The impact of such excitation enhancement is exemplarily investigated by studying the dynamics of a three-level system. It decays upon excitation by an electric quadrupole transition via two electric dipole transitions. Since one dipole transition is assumed to be radiative, the enhancement of this emission serves as a figure of merit. Such self-consistent treatment of excitation, emission, and internal dynamics as developed in this contribution is the key to predict any observable quantity. The suggested scheme may represent a blueprint for future experiments and will find many obvious spectroscopic and sensing applications.

Robert Filter; Stefan Mühlig; Toni Eichelkraut; Carsten Rockstuhl; Falk Lederer

2012-07-05T23:59:59.000Z

67

EPR investigations of phase transitions in amphiphilic systems using hydrophilic spin probes  

E-Print Network [OSTI]

1653 EPR investigations of phase transitions in amphiphilic systems using hydrophilic spin probes D technique de sonde EPR a été utilisée pour étudier les transitions coagel-gel et gel-cristal liquide dans de phase est observée à ~ 120 °C. Abstract. - The EPR spin probe technique was used to study coagel

Paris-Sud XI, Université de

68

A case study review of technical and technology issues for transition of a utility load management program to provide system reliability resources in restructured electricity markets  

E-Print Network [OSTI]

Issues for Transition of a Utility Load Management ProgramSCE’s load management system is to transition from providinga transition from SCE’s current load management system to an

Weller, G.H.

2001-01-01T23:59:59.000Z

69

Mode-locking and the transition to chaos in dissipative systems  

SciTech Connect (OSTI)

Dissipative systems with two competing frequencies exhibit transitions to chaos. We have investigated the transition through a study of discrete maps of the circle onto itself, and by constructing and analyzing return maps of differential equations representing some physical systems. The transition is caused by interaction and overlap of mode-locked resonances and takes place at a critical line where the map losses invertibility. At this line the mode-locked intervals trace up a complete Devil's Staircase whose complementary set is a Cantor set with universal fractal dimension D approx. 0.87. Below criticality there is room for quasiperiodic orbits, whose measure is given by an exponent ..beta.. approx. 0.34 which can be related to D through a scaling relation, just as for second order phase transitions. The Lebesgue measure serves as an order parameter for the transition to chaos. The resistively shunted Josephson junction, and charge density waves (CDWs) in rf electric fields are usually described by the differential equation of the damped driven pendulum. The 2d return map for this equation collapses to ld circle map at and below the transition to chaos. The theoretical results on universal behavior, derived here and elsewhere, can thus readily be checked experimentally by studying real physical systems. Recent experiments on Josephson junctions and CDWs indicating the predicted fractal scaling of mode-locking at criticality are reviewed.

Bak, P.; Bohr, T.; Jensen, M.H.

1984-01-01T23:59:59.000Z

70

Transition to cloud computing in healthcare information systems  

E-Print Network [OSTI]

This thesis is a study on the adoption of cloud computing in healthcare information technology industry. It provides a guideline for people who are trying to bring cloud computing into healthcare information systems through ...

Ren, Haiying, S.M. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

71

Geographic Information System At Walker-Lane Transitional Zone...  

Open Energy Info (EERE)

systems References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range...

72

Influence of double-electron transitions on the EXAFS L edges of rare-earth systems  

Science Journals Connector (OSTI)

This work presents an x-ray-absorption study at the L edges of several rare-earth compounds. In both L1-edge and L3-edge spectra, anomalous features are clearly detected in the EXAFS region and have been associated with the creation of 2s4d and 2p4d double-core hole states, respectively. Comparison of theoretical calculations with the experiments are carried out using the results of explicit computation of cross sections for the allowed mainline (L edge) and double-electron (LN4,5 edges) which identify the transitions expected to be observable. In addition, the excitation energies of all of these allowed transitions are given. The influence of multielectron transitions on the EXAFS data analysis is discussed for several rare-earth-based systems. An estimate of the error introduced by neglecting the presence of double-electron transitions on coordination numbers and bond distances is given, based on these experimental data.

Jesús Chaboy; Augusto Marcelli; Trevor A. Tyson

1994-05-01T23:59:59.000Z

73

[Investigation of transitions from order to chaos in dynamical systems  

SciTech Connect (OSTI)

This report briefly discusses the following topics on chaotic systems; numerical investigations of fast dynamo problem for stationary space-periodic flows with chaotic streamlines; analytical and numerical investigations of magnetic field generation by conducting flows with finite resistivity; and emittance growth in charged particle beams.

Not Available

1992-01-01T23:59:59.000Z

74

Advanced Heat/Mass Exchanger Technology for Geothermal and solar Renewable Energy Systems  

Broader source: Energy.gov [DOE]

Advanced Heat/Mass Exchanger Technology for Geothermal and solar Renewable Energy Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

75

Enhanced vibration energy harvesting using dual-mass systems Xiudong Tang, Lei Zuo n  

E-Print Network [OSTI]

of Mechanical Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794, USA a r t i c l eEnhanced vibration energy harvesting using dual-mass systems Xiudong Tang, Lei Zuo n Department-mass vibration energy harvester, where two masses are connected in series with the energy transducer and spring

Zuo, Lei

76

Structure in the ??? System at the A2 Mass Region  

Science Journals Connector (OSTI)

Evidence is presented for an enhancement in the ??? mass spectrum at the A2 mass region in ?+p interactions at 5 GeV/c. Assuming this effect to be the A2, we calculate the decay rate relative to the ?? decay mode and obtain the results 0.29 ± 0.08 and 0.10 ± 0.04 for the two final states A20?++ and A2+p, respectively. Possible explanations of the discrepancy between these numbers are suggested.

U. Karshon; G. Mikenberg; S. Pitluck; Y. Eisenberg; E. E. Ronat; A. Shapira; G. Yekutieli

1974-04-15T23:59:59.000Z

77

Exact non-Born-Oppenheimer wave functions for three-particle Hookean systems with arbitrary masses  

SciTech Connect (OSTI)

A Hookean model of a three-body problem for particles with arbitrary masses and charges where two of them interact with each other through a Coulomb potential and with the third through a harmonic potential is presented. It is shown that a condition relating the masses to the harmonic coupling constants must be satisfied in order to render this problem separable. A general exact analytic solution written in terms of the relative interparticle coordinates is given as well as general expressions for the total and binding energies of this three-body system. We apply these results to examine electronic, muonic, antiprotonic, and pionic families of non-Born-Oppenheimer Hookean systems. The first contains the atoms or atomic ions: Ps{sup -}(e{sup +}e{sup -}e{sup -}), H{sup -}(p{sup +}e{sup -}e{sup -}), D{sup -}(d{sup +}e{sup -}e{sup -}), T{sup -}(p{sup +}e{sup -}e{sup -}), {sup 4}He(he{sup +2}e{sup -}e{sup -}), and the following molecular ions: Ps{sub 2}{sup +}(e{sup -}e{sup +}e{sup +}), H{sub 2}{sup +}(e{sup -}p{sup +}p{sup +}), HD{sup +}(e{sup -}d{sup +}p{sup +}), HT{sup +}(e{sup -}t{sup +}p{sup +}), DT{sup +}(e{sup -}d{sup +}t{sup +}), D{sub 2}{sup +}(e{sup -}d{sup +}d{sup +}), T{sub 2}{sup +}(e{sup -}t{sup +}t{sup +}). The muonic and antiprotonic families are similar to the electronic ones except that the species are formed replacing e{sup -} by {mu}{sup -} or p{sup -}. The pionic family comprises exotic atoms containing at least one pion. We also apply these results to two-electron three-dimensional spherical quantum dots and for these systems we examine the effect of electronic correlation, particularly on the singlet-triplet transitions and on the collective motion of the electrons and center of mass leading to ''floppy''dynamics.

Lopez, Xabier; Ugalde, Jesus M.; Echevarria, Lorenzo; Ludena, Eduardo V. [Kimika Fakultatea, Euskal Herriko Unibertsitatea and Donostia International Physics Center (DIPC), P.K. 1072, 20080 Donostia, Euskadi (Spain) (Spain); Departamento de Quimica, Universidad Simon Bolivar, USB, Sartenejas (Venezuela); Kimika Fakultatea, Euskal Herriko Unibertsitatea and Donostia International Physics Center (DIPC), P.K. 1072, 20080 Donostia, Euskadi (Spain) and Centro de Quimica, Instituto Venezolano de Investigaciones Cientificas, IVIC, Apartado 21827, Caracas 1020-A (Venezuela)

2006-10-15T23:59:59.000Z

78

Physica B 398 (2007) 407411 Metal-insulator transition in correlated systems  

E-Print Network [OSTI]

, CNEA, (8400) San Carlos de Bariloche, Argentina c Laboratoire de Physique des Solides, CNRS-UMR8502, Ciudad Universitaria, Pabello´n 1, Buenos Aires (1428), Argentina Abstract We study the Mott transition correlated systems in which the competition between the kinetic and Coulomb energy of electrons, which

Miranda, Eduardo

79

Enhancement of ??0 and other systems in missing-mass final states  

Science Journals Connector (OSTI)

A method of enhancing ??0 and ??0 systems in missing-mass final states is described. In addition to simple kinematical arguments, dynamical considerations are applied to yield some information on the spin and parity of the ??0 (??0) system.

G. Mikenberg

1974-12-01T23:59:59.000Z

80

Analytical description of the quantum-mesoscopic-classical transition in systems with quasidiscrete environments  

SciTech Connect (OSTI)

We investigate the dynamic properties of inhomogeneous nanomaterials, which appear in analytical descriptions typically as a series of {delta} functions with corresponding Gibbs weights. We focus on observables relevant for transport theories of Josephson junction arrays and granular systems near the superconductor-insulator transition. Furthermore, our description applies to the theory of tunnel junctions exchanging energy with a 'bath,' the latter having a discrete spectrum. Using the matrix {Theta}-function formalism, we find an analytical expression for the transport characteristics capturing the complete temperature-driven transition from the quantum to the classical regime.

Chtchelkatchev, N. M.; Glatz, A. (Materials Science Division); (Russian Acad. Sci.); (Moscow Inst. Phys. Tech.)

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

"Double swallow-tail" singularity and glass-glass transition in a quasibinary system  

E-Print Network [OSTI]

The system with the square shoulder (SS) potential is considered in the frame of Mode Coupling Theory (MCT) approach. An approximation for the structure factor is used that emphasizes the quasibinary character of the system. The qualitative phase diagram is constructed that includes continuous and discontinuous glass-glass transitions. The phase diagram is governed by two swallow tails connected with two $A_4$ singularities.

V. N. Ryzhov; E. E. Tareyeva

2013-12-05T23:59:59.000Z

82

Quantum phase transitions beyond the Landau paradigm in a Sp(4) spin system  

Science Journals Connector (OSTI)

We propose quantum phase transitions beyond the Landau’s paradigm of Sp(4) spin Heisenberg models on the triangular and square lattices motivated by the exact Sp(4)?SO(5) symmetry of spin-3/2 fermionic cold atomic system with only s-wave scattering. On the triangular lattice, we study a phase transition between the 3×3 spin ordered phase and a Z2 spin liquid phase; this phase transition is described by an O(8) sigma model in terms of fractionalized spinon fields, with significant anomalous scaling dimensions of spin order parameters. On the square lattice, we propose a deconfined critical point between the Neel order and the valence bond solid (VBS) order, which is described by the CP(3) model, and the monopole effect of the compact U(1) gauge field is expected to be suppressed at the critical point.

Yang Qi and Cenke Xu

2008-07-07T23:59:59.000Z

83

Laser frequency stabilization to excited state transitions using electromagnetically induced transparency in a cascade system  

SciTech Connect (OSTI)

We demonstrate laser frequency stabilization to excited state transitions using cascade electromagnetically induced transparency. Using a room temperature Rb vapor cell as a reference, we stabilize a first diode laser to the D{sub 2} transition and a second laser to a transition from the intermediate 5P{sub 3/2} state to a highly excited state with principal quantum number n=19-70. A combined laser linewidth of 280{+-}50 kHz over a 100 {mu}s time period is achieved. This method may be applied generally to any cascade system and allows laser stabilization to an atomic reference in the absence of a direct absorption signal.

Abel, R. P.; Mohapatra, A. K.; Bason, M. G.; Pritchard, J. D.; Weatherill, K. J.; Raitzsch, U.; Adams, C. S. [Department of Physics, Durham University, Rochester Building, South Road, Durham DH1 3LE (United Kingdom)

2009-02-16T23:59:59.000Z

84

Transition of light propagation from slow light to superluminal light in a four-level system  

SciTech Connect (OSTI)

We offer a general treatment of electromagnetically-induced transparency (EIT) in a four-level system consisting of a ladder-type system and a V-type system through which a two-coupling light generates two pairs of dressed states that help to improve susceptibility so that a much slower light speed can be achieved than with the standard V-type system. In particular, a method is shown to realize the transition of light propagation from slower-than-c to faster-c by means of the pump between two lower states.

Wu Hao; Zhang Yundong; Liu Shuangqiang; Wang Jinfang; Dang Boshi; Yuan Ping [National Key Laboratory of Tunable Laser Technology, Institute of Optoelectronics, Harbin Institute of Technology, Harbin 150080 (China)

2010-06-15T23:59:59.000Z

85

Transition to chaos by interaction of resonances in dissipative systems. I. Circle maps  

SciTech Connect (OSTI)

Dissipative dynamical systems with two competing frequencies exhibit transitions to chaos. We have investigated the transition through a study of discrete maps of the circle onto itself. The transition is caused by interaction and overlap of mode-locked resonances and occurs at a critical line where the map loses invertibility. At this line the mode-locked intervals trace up a complete devil's staircase whose complementary set is a Cantor set with fractal dimension Dapprox.0.87. Numerical results indicate that the dimension is universal for maps with cubic inflection points. Below criticality the staircase is incomplete, leaving room for quasiperiodic behavior. The Lebesgue measure of the quasiperiodic orbits seems to be given by an exponent ..beta..approx.0.35 which can be related to D through the scaling relation D = 1-..beta../..nu... The exponent ..nu.. characterizes the cutoff of narrow plateaus near the transition. A variety of other exponents describing the transition to chaos is defined and estimated numerically.

Jensen, M.H.; Bak, P.; Bohr, T.

1984-10-01T23:59:59.000Z

86

Confirmation of an exoplanet using the transit color signature: Kepler-418b, a blended giant planet in a multiplanet system  

E-Print Network [OSTI]

We announce confirmation of Kepler-418b, one of two proposed planets in this system. This is the first confirmation of an exoplanet based primarily on the transit color signature technique. We used the Kepler public data archive combined with multicolor photometry from the Gran Telescopio de Canarias and radial velocity follow-up using FIES at the Nordic Optical Telescope for confirmation. We report a confident detection of a transit color signature that can only be explained by a compact occulting body, entirely ruling out a contaminating eclipsing binary, a hierarchical triple, or a grazing eclipsing binary. Those findings are corroborated by our radial velocity measurements, which put an upper limit of ~1 Mjup on the mass of Kepler-418b. We also report that the host star is significantly blended, confirming the ~10% light contamination suspected from the crowding metric in the Kepler light curve measured by the Kepler team. We report detection of an unresolved light source that contributes an additional ~4...

Tingley, B; Gandolfi, D; Deeg, H J; Pallé, E; Rodriguez, P Montañés; Murgas, F; Alonso, R; Bruntt, H; Fridlund, M

2014-01-01T23:59:59.000Z

87

The Helium Cooling System and Cold Mass Support System for theMICE Coupling Solenoid  

SciTech Connect (OSTI)

The MICE cooling channel consists of alternating threeabsorber focus coil module (AFC) and two RF coupling coil module (RFCC)where the process of muon cooling and reacceleration occurs. The RFCCmodule comprises a superconducting coupling solenoid mounted around fourconventional conducting 201.25 MHz closed RF cavities and producing up to2.2T magnetic field on the centerline. The coupling coil magnetic fieldis to produce a low muon beam beta function in order to keep the beamwithin the RF cavities. The magnet is to be built using commercialniobium titanium MRI conductors and cooled by pulse tube coolers thatproduce 1.5 W of cooling capacity at 4.2 K each. A self-centering supportsystem is applied for the coupling magnet cold mass support, which isdesigned to carry a longitudinal force up to 500 kN. This report willdescribe the updated design for the MICE coupling magnet. The cold masssupport system and helium cooling system are discussed indetail.

Wang, L.; Wu, H.; Li, L.K.; Green, M.A.; Liu, C.S.; Li, L.Y.; Jia, L.X.; Virostek, S.P.

2007-08-27T23:59:59.000Z

88

THE LOW-MASS INTERACTING BINARY SYSTEM OO Aql REVISITED: A NEW QUADRUPLE SYSTEM  

SciTech Connect (OSTI)

In this study we present photometric and spectroscopic variation analysis and an orbital period study of a low-mass interacting system OO Aql. Simultaneous solution of the light and radial velocity curves provides us with the determination of a new set of stellar physical parameters for the primary and the secondary companion, M{sub 1} = 1.05(2) M{sub Sun }, M{sub 2} = 0.89(2) M{sub Sun }, R{sub 1} = 1.38(2) R{sub Sun }, R{sub 2} = 1.28(2) R{sub Sun }, log (L{sub 1}/L{sub Sun }) = 0.258, and log (L{sub 2}/L{sub Sun }) = 0.117, and the separation of the components was determined to be a = 3.333(16) R{sub Sun }. Newly obtained parameters yield the distance of the system as 136(8) pc. Analyses of the mid-eclipse times indicate a period increase of (P/ P-dot )=4 Multiplication-Sign 10{sup 7} yr that can be interpreted in terms of the mass transfer (dM/dt) = 5 Multiplication-Sign 10{sup -8} M{sub Sun} yr{sup -1} from the less massive component to the more massive component. Our new solution confirmed that OO Aql is a multiple system in the form of AB + C + D. We found initial astrophysical parameters for the component of the system and its current age to be 8.6 Gyr using a non-conservative stellar evolution model (EV-TWIN code).

Icli, T.; Kocak, D.; Boz, G. C.; Yakut, K. [Department of Astronomy and Space Sciences, University of Ege, 35100, Bornova-Izmir (Turkey)

2013-05-15T23:59:59.000Z

89

Low-energy photon scattering off 142,146,148,150Nd: An investigation in the mass region of a nuclear shape transition  

Science Journals Connector (OSTI)

Nuclear resonance fluorescence experiments have been performed on the nuclei 142,146,148,150Nd, which are located in the mass region of a nuclear shape transition from a spherical (142Nd) to a well-deformed shape (150Nd). Bremsstrahlung of 4.1 MeV endpoint energy served as the photon source. The scattered photons were detected by high-resolution Ge-spectrometers. Precise excitation energies, decay branching ratios, and ground-state decay widths of numerous new spin-1 states have been extracted.

H.H. Pitz; R.D. Heil; U. Kneissl; S. Lindenstruth; U. Seemann; R. Stock; C. Wesselborg; A. Zilges; P. Von Brentano; S.D. Hoblit; A.M. Nathan

1990-01-01T23:59:59.000Z

90

Stability of Earth-Mass Planets in the Habitable Zones of Extrasolar Planetary Systems  

E-Print Network [OSTI]

Stability of Earth-Mass Planets in the Habitable Zones of Extrasolar Planetary Systems Dr. Ravi Kumar Kopparapu Dept. of Geosciences, College of Earth and Mineral Science Over 500 planets orbiting and Saturn but in the last couple of years several "super-earths", planets with mass less than 10 times Earth

Bjørnstad, Ottar Nordal

91

New insight into the Solar System's transition disk phase provided by the unusual meteorite Isheyevo  

E-Print Network [OSTI]

Many aspects of planet formation are controlled by the amount of gas remaining in the natal protoplanetary disk (PPDs). Infrared observations show that PPDs undergo a transition stage at several Myr, during which gas densities are reduced. Our Solar System would have experienced such a stage. However, there is currently no data that provides insight into this crucial time in our PPD's evolution. We show that the Isheyevo meteorite contains the first definitive evidence for a transition disk stage in our Solar System. Isheyevo belongs to a class of metal-rich meteorites whose components have been dated at almost 5 Myr after the first solids in the Solar System, and exhibits unique sedimentary layers that imply formation through gentle sedimentation. We show that such layering can occur via gentle sweep-up of material found in the impact plume resulting from the collision of two planetesimals. Such sweep-up requires gas densities consistent with observed transition disks. As such, Isheyevo presents the first ev...

Morris, Melissa A; Knauth, L Paul

2014-01-01T23:59:59.000Z

92

Mass-Selected Ion Deposition System - Electrospray Source | EMSL  

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

molecules originating in the ion source from impacting the surface, an ultrahigh vacuum (UHV) chamber for ion deposition by soft landing, and a vacuum-lock system for introducing...

93

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems...  

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

10 Update Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Applications: 2010 Update This report is the fourth annual update of a comprehensive...

94

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems...  

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

Application: 2009 Update Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Application: 2009 Update This report is the third annual update of a...

95

Comparison of four composite landfill liner systems considering leakage rate and mass flux  

E-Print Network [OSTI]

Comparison of four composite landfill liner systems considering leakage rate and mass flux T, Seoul, Republic of Korea ABSTRACT: Performance of four different municipal solid waste landfill liner to evaluate the performance of municipal solid waste (MSW) landfill liner systems. A liner system that allows

96

Multi-vehicle Mobility Allowance Shuttle Transit (MAST) System - An Analytical Model to Select the Fleet Size and a Scheduling Heuristic  

E-Print Network [OSTI]

The mobility allowance shuttle transit (MAST) system is a hybrid transit system in which vehicles are allowed to deviate from a fixed route to serve flexible demand. A mixed integer programming (MIP) formulation for the static scheduling problem...

Lu, Wei

2012-10-19T23:59:59.000Z

97

Heating-Induced Micelle to Vesicle Transition in the Cationic-Anionic Surfactant Systems: Comprehensive Study and Understanding  

E-Print Network [OSTI]

Heating-Induced Micelle to Vesicle Transition in the Cationic-Anionic Surfactant Systems, 2004; In Final Form: January 6, 2005 Heating-induced micelle to vesicle transition (MVT), which has classes: Class A and B. Heating-induced MVT was observed in Class A at certain total surfactant

Huang, Jianbin

98

Phase and self-assembly transition induced by glycerolborax interaction in an aqueous surfactant two-phase system  

E-Print Network [OSTI]

Phase and self-assembly transition induced by glycerol­borax interaction in an aqueous surfactant 2009 DOI: 10.1039/b911564a We report that the phase and self-assembly transition in an aqueous in surfactant systems containing pH-sensitive components. Introduction The influence of glycerol on the self-assembly

Huang, Jianbin

99

Low Mass $S$-wave $K?$ and $??$ System  

E-Print Network [OSTI]

Knowledge of the details of the $S$-wave $K\\pi$ and $\\pi\\pi$ systems limits the precision of measurements of heavy quark meson properties. This talk covers recent experimental developments in parametrizing and measuring these waves, and examines possibilities for the future.

B. Meadows

2007-12-10T23:59:59.000Z

100

Effect of disorder on the superfluid transition in two-dimensional systems  

SciTech Connect (OSTI)

In recent experiments on thin {sup 4}He films absorbed to rough surfaces Luhman and Hallock [Phys. Rev. Lett. 93, 086106 (2004)] attempted to observe Kosterlitz-Thouless (KT) features of the superfluid-normal transition of this strongly disordered two-dimensional (2D) bosonic system. It came as a surprise that while peak of dissipation was measured for a wide range of surface roughness there were no indications of the theoretically expected universal jump of the areal superfluid density for the strongly disordered samples. We test the hypothesis that this unusual behavior is a manifestation of finite-size effects by numerical study of the corresponding 2D bosonic model with strong diagonal disorder. We demonstrate that the discontinuous features of the underlying KT transition are severely smoothed out for finite system sizes (or finite frequency measurements). We resolve the universal discontinuity of the areal superfluid density by fitting our data to the KT renormalization group equations for finite systems. In analogy to our simulations, we suggest that in experiments on strongly disordered 2D bosonic systems the very existence of the KT scenario can and should be revealed only from a proper finite-size scaling of the data (for {sup 4}He films finite-size scaling can be effectively controlled by the scaling of finite frequency of measurements). We also show relevance of our conclusions for a wider class of systems, such as superconducting granular films, Josephson junction arrays, and ultracold atomic gases, where similar difficulties appear in experiments designed to verify KT transition (especially in disordered cases)

Balabanyan, Karen G. [Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003 (United States)

2007-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

Cooling system having reduced mass pin fins for components in a gas turbine engine  

DOE Patents [OSTI]

A cooling system having one or more pin fins with reduced mass for a gas turbine engine is disclosed. The cooling system may include one or more first surfaces defining at least a portion of the cooling system. The pin fin may extend from the surface defining the cooling system and may have a noncircular cross-section taken generally parallel to the surface and at least part of an outer surface of the cross-section forms at least a quartercircle. A downstream side of the pin fin may have a cavity to reduce mass, thereby creating a more efficient turbine airfoil.

Lee, Ching-Pang; Jiang, Nan; Marra, John J

2014-03-11T23:59:59.000Z

102

A DOUBLE PLANETARY SYSTEM AROUND THE EVOLVED INTERMEDIATE-MASS STAR HD 4732  

SciTech Connect (OSTI)

We report the detection of a double planetary system orbiting around the evolved intermediate-mass star HD 4732 from precise Doppler measurements at Okayama Astrophysical Observatory and Australian Astronomical Observatory. The star is a K0 subgiant with a mass of 1.7 M {sub Sun} and solar metallicity. The planetary system is composed of two giant planets with minimum mass of msin i = 2.4 M {sub J}, orbital period of 360.2 days and 2732 days, and eccentricity of 0.13 and 0.23, respectively. Based on dynamical stability analysis for the system, we set the upper limit on the mass of the planets to be about 28 M {sub J} (i > 5 Degree-Sign ) in the case of coplanar prograde configuration.

Sato, Bun'ei; Omiya, Masashi; Harakawa, Hiroki; Nagasawa, Makiko; Ida, Shigeru [Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan)] [Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan); Wittenmyer, Robert A. [Department of Astrophysics, School of Physics, University of NSW 2052 (Australia)] [Department of Astrophysics, School of Physics, University of NSW 2052 (Australia); Izumiura, Hideyuki; Kambe, Eiji [Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, Kamogata, Okayama 719-0232 (Japan)] [Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, Kamogata, Okayama 719-0232 (Japan); Takeda, Yoichi; Kokubo, Eiichiro [The Graduate University for Advanced Studies, Shonan Village, Hayama, Kanagawa 240-0193 (Japan)] [The Graduate University for Advanced Studies, Shonan Village, Hayama, Kanagawa 240-0193 (Japan); Yoshida, Michitoshi [Hiroshima Astrophysical Science Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 (Japan)] [Hiroshima Astrophysical Science Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Itoh, Yoichi [Nishi-Harima Astronomical Observatory, Center for Astronomy, University of Hyogo, 407-2, Nishigaichi, Sayo, Hyogo 679-5313 (Japan)] [Nishi-Harima Astronomical Observatory, Center for Astronomy, University of Hyogo, 407-2, Nishigaichi, Sayo, Hyogo 679-5313 (Japan); Ando, Hiroyasu, E-mail: satobn@geo.titech.ac.jp [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan)] [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan)

2013-01-01T23:59:59.000Z

103

Selective separation of some ecotoxic transition metal ions from aqueous solutions using immobilized macrocyclic material containing solid phase extraction system  

Science Journals Connector (OSTI)

A simple flow-based method was developed for the simultaneous separation of certain transition metal ions (Co, Ni, Cu, Zn, Cd) from aqueous systems, which ions show ecotoxic effects when present at elevated ... (...

Ismail M. M. Rahman; Yoshiaki Furusho…

2011-12-01T23:59:59.000Z

104

Technology transition in the national air transportation system : market failure and game theoretic analysis with application to ADS-B  

E-Print Network [OSTI]

This research analyzes the problem of technology transition in the national air transportation system, focusing on the implementation of Automatic Dependent Surveillance-Broadcast (ADS-B). ADS-B is a key technology in the ...

Hu, Xiaojie

2008-01-01T23:59:59.000Z

105

Reliability Engineering and System Safety 92 (2007) 609618 The nuclear industry's transition to risk-informed regulation and  

E-Print Network [OSTI]

Reliability Engineering and System Safety 92 (2007) 609­618 The nuclear industry's transition a Nuclear Science and Engineering Department, Massachusetts Institute of Technology, Cambridge, MA 02139, USA b Nuclear Power Engineering, Quality and Safety Management Department, Tokyo Electric Power

106

First-Order Transition from Superfluid to Bose-Metal State in Systems with Resonant Pairing  

Science Journals Connector (OSTI)

Systems showing resonant superfluidity, driven by an exchange coupling of strength g between uncorrelated pairs of itinerant fermions and tightly bound ones, undergo a first-order phase transition as g increases beyond some critical value gc. The superfluid phase for g?gc is characterized by a gap in the fermionic single-particle spectrum and an acoustic sound-wave-like collective mode of the bosonic resonating fermion pairs inside this gap. For g>gc this state gives way to a phase-uncorrelated bosonic liquid with a q2 spectrum.

T. Stauber and J. Ranninger

2007-07-26T23:59:59.000Z

107

Transformation of the nonrelativistic quantum system under transition from one inertial reference frame to another  

E-Print Network [OSTI]

We consider the problem of internal particle state transformation, which is a bound state of several particles, from the rest frame of a composite particle to the system in which it is relativistic. It is assumed that in the rest frame of the composite particle, its internal state could be considered in the nonrelativistic approximation. It has been shown, that this internal state is unchanged during the transition from one reference frame to another. Namely, the spherically symmetric particle in the rest frame stays spherically symmetric in any other reference frame. We discuss the possible application of these results for description of the hadrons scattering processes like bound states of quarks.

I. V. Sharph; M. A. Deliyergiyev; A. G. Kotanzhyan; K. K. Merkotan; N. O. Podolian; O. S. Potiyenko; D. A. Ptashynskyy; G. O. Sokhrannyi; A. V. Tykhonov; Yu. V. Volkotrub; V. D. Rusov

2014-03-11T23:59:59.000Z

108

System transition : dynamics of change in the US air transportation system  

E-Print Network [OSTI]

The US Air Transportation System is currently facing a number of challenges including an increasing demand for travel and growing environmental requirements. In order to successfully meet future needs, the system will need ...

Mozdzanowska, Aleksandra L. (Aleksandra Ludmila), 1979-

2008-01-01T23:59:59.000Z

109

Elimination of ``memory`` from sample handling and inlet system of a mass spectrometer  

DOE Patents [OSTI]

This paper describes a method for preparing the sample handling and inlet system of a mass spectrometer for analysis of a subsequent sample following analysis of a previous sample comprising the flushing of the system interior with supercritical CO{sub 2} and venting the interior. The method eliminates the effect of system ``memory`` on the subsequent analysis, especially following persistent samples such as xenon and krypton.

Chastgner, P.

1991-05-08T23:59:59.000Z

110

Diffusion of heat, energy, momentum, and mass in one-dimensional systems  

E-Print Network [OSTI]

We study diffusion processes of local fluctuations of heat, energy, momentum, and mass in three paradigmatic one-dimensional systems. For each system, diffusion processes of four physical quantities are simulated and the cross correlations between them are investigated. We find that, in all three systems, diffusion processes of energy and mass can be perfectly expressed as a linear combination of those of heat and momentum, suggesting that diffusion processes of heat and momentum may represent the heat mode and the sound mode in the hydrodynamic theory. In addition, the dynamic structure factor, which describes the diffusion behavior of local mass density fluctuations, is in general insufficient for probing diffusion processes of other quantities because in some cases there is no correlation between them. We also find that the diffusion behavior of heat can be qualitatively different from that of energy, and, as a result, previous studies trying to relate heat conduction to energy diffusion should be revisited.

Shunda Chen; Yong Zhang; Jiao Wang; Hong Zhao

2013-03-27T23:59:59.000Z

111

Dipole strength distributions in the stable Ba isotopes {sup 134-138}Ba: A study in the mass region of a nuclear shape transition  

SciTech Connect (OSTI)

The low-lying dipole strength distributions in the odd-mass isotopes {sup 135,137}Ba were studied in nuclear resonance fluorescence experiments (NRF) performed at the Stuttgart Dynamitron facility using bremsstrahlung beams with end point energies of 4.1, 3.1, and 2.5 MeV. Numerous excited states, most of them unknown so far, were observed in the excitation energy range up to 4 MeV. Detailed spectroscopic information has been obtained on excitation energies, decay widths, decay branching ratios, and transition probabilities. The results for {sup 137}Ba are compared with calculations in the framework of the Quasiparticle-Phonon Model. The new data for {sup 135,137}Ba complete the systematics of low-lying dipole excitations as observed for the even Ba isotopes {sup 134,136,138}Ba in previous NRF experiments in Stuttgart. The complete systematics within the Ba isotopic chain, exhibiting a nuclear shape transition, is discussed with respect to E1 two-phonon excitations, M1 scissors mode excitations, and in regard to the new critical point symmetries.

Scheck, M.; Garrel, H. von; Belic, D.; Kneissl, U.; Kohstall, C.; Nord, A.; Pitz, H.H.; Stedile, F. [Institut fuer Strahlenphysik, Universitaet Stuttgart, D-70569 Stuttgart (Germany); Tsoneva, N. [Institut fuer Theor. Physik, Universitaet Giessen, D-35392 Giessen (Germany); Brentano, P. von; Fransen, C.; Gade, A.; Jolie, J.; Linnemann, A.; Pietralla, N.; Werner, V. [Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Cologne (Germany); Stoyanov, C. [Institute for Nuclear Research and Nuclear Energy, 1784 Sofia (Bulgaria)

2004-10-01T23:59:59.000Z

112

STRATEGIC PLAN FOR COORDINATING RURAL INTELLIGENT TRANSPORTATION SYSTEM (ITS) TRANSIT DEVELOPMENT IN THE GREAT SMOKY MOUNTAINS NATIONAL PARK  

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

256 256 STRATEGIC PLAN FOR COORDINATING RURAL INTELLIGENT TRANSPORTATION SYSTEM (ITS) TRANSIT DEVELOPMENT IN THE GREAT SMOKY MOUNTAINS NATIONAL PARK L. F. Truett (TRUETTLF@ORNL.GOV) S. M. Chin (CHINS@ORNL.GOV) E. C. P. Chang (ECC2005@ORNL.GOV) November 2002 Prepared for the FEDERAL TRANSIT ADMINISTRATION U.S. DEPARTMENT OF TRANSPORTATION Washington, D.C. 20590 Prepared by the Center for Transportation Analysis OAK RIDGE NATIONAL LABORATORY Oak Ridge, Tennessee 37831-6073 managed by UT-BATTELLE, LLC for the U.S. DEPARTMENT OF ENERGY under Contract No. DE-AC05-00OR22725 Coordination of Transit Concepts in GSMNP page iii, 11/12/02 STRATEGIC PLAN FOR COORDINATING RURAL INTELLIGENT TRANSPORTATION SYSTEM (ITS) TRANSIT DEVELOPMENT IN THE

113

Fuel Retrieval System Process Flow Diagrams Mass Balance Calculations for K West Basin  

SciTech Connect (OSTI)

This calculation justifies the numbers used for the material balance on the process flow diagrams for the KW Basin Fuel Retrieval Subproject. The purpose of these calculations is to develop the material balances that are documented in the Fuel Retrieval System (FRS) Process Flow Diagrams for future reference. The attached mass calculations were prepared in support of revising the fuel retrieval system process flow diagrams for the 105K West Basin. The calculations refer to diagram H-1-81164.

REED, A.V.

2000-01-03T23:59:59.000Z

114

Inelastic exchange scattering in electron-energy-loss spectroscopy: Localized excitations in transition-metal and rare-earth systems  

Science Journals Connector (OSTI)

Cross sections for quasiatomic excitation by exchange scattering of electrons are calculated in the Born-Ochkur approximation for 3p-3d and 3d-3d transitions in transition-metal systems, and for 4d-4f and 4f-4f transitions in rare earths. The energy dependence of the spin polarization of 3p-3d and 4d-4f losses in reflection electron-energy-loss spectroscopy from ferromagnetic surfaces involves a balance of small-angle spin-dependent inelastic processes accompanied by a high-angle elastic scattering, and large-angle spin-flip exchange scattering without the need for elastic scattering. Both 3d-3d excitations, e.g., in transition-metal compounds, and 4f-4f excitations in rare earths involve spin-flip transitions whose scattering amplitudes g fall off with momentum transfer q such that the full width at half maximum q1/2 (in a.u.) is given by q1/2?rnl??2, where ?rnl? is the expectation value of r for the 3d or 4f electron. The angular width of the spin-flip differential cross section is then much greater than for dipole transitions, a pattern that helps to account for how these intra-atomic transitions compete with dipole processes for primary energies in excess of 100 eV.

S. J. Porter; J. A. D. Matthew; R. J. Leggott

1994-07-15T23:59:59.000Z

115

Lensing by Lyman Limit Systems: Determining the Mass to Gas Ratio  

E-Print Network [OSTI]

We present a new method to determine the total mass-to-neutral gas ratio in Lyman-limits systems. The method exploits the relation between the neutral hydrogen column density and the magnification of background sources due to the weak gravitational lensing that these systems induce. Because weak lensing does not provide a direct measure of mass, one must use this relation in a statistical sense to solve for the average mass-to-gas ratio and its distribution. We use a detailed mock catalog of quasars (sources) and Lyman-limit systems (lenses) to demonstrate the applicability of this approach through our ability to recover the parameter. This mock catalog also allows us to check for systematics in the method and to sketch its limitations. For a universal constant mass-to-gas ratio and a sample of N quasars, we obtain an unbiased estimate of its value with 95% confidence limits (independent of its actual value) of +/- 140 {10^5/N)^0.5.

Ariyeh Maller; Tsafrir Kolatt; Matthias Bartelmann; George R. Blumenthal

2001-01-11T23:59:59.000Z

116

19 `eme Congr`es Francais de Mecanique Marseille, 24-28 ao^ut 2009 Transition to turbulence in globally subcritical systems  

E-Print Network [OSTI]

in globally subcritical systems P. MANNEVILLEa , J. ROLLANDa,b a. LadHyX, ´Ecole Polytechnique, 91128 our current understanding of the transition to turbulence in globally subcritical systems, pointing to turbulence, subcritical systems, plane Couette flow 1 General setting Understanding the transition

Boyer, Edmond

117

Minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems  

SciTech Connect (OSTI)

A parametric calculational analysis has been performed in order to estimate the minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems. The analysis was performed using a version of the SCALE-4.0 code system and the 27-group ENDF/B-IV cross-section library. Water-moderated uranyl fluoride (UO[sub 2]F[sub 2] and H[sub 2]O) and hydrofluoric-acid-moderated uranium hexaflouride (UF[sub 6] and HF) systems were considered in the analysis over enrichments of 1.4 to 5 wt % [sup 235]U. Estimates of the minimum critical volume, minimum critical mass of uranium, and the minimum mass of moderator required for criticality are presented. There was significant disagreement between the values generated in this study when compared with a similar undocumented study performed in 1983 using ANISN and the Knight-modified Hansen-Roach cross sections. An investigation into the cause of the disagreement was made, and the results are presented.

Jordan, W.C.; Turner, J.C.

1992-12-01T23:59:59.000Z

118

Minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems  

SciTech Connect (OSTI)

A parametric calculational analysis has been performed in order to estimate the minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems. The analysis was performed using a version of the SCALE-4.0 code system and the 27-group ENDF/B-IV cross-section library. Water-moderated uranyl fluoride (UO{sub 2}F{sub 2} and H{sub 2}O) and hydrofluoric-acid-moderated uranium hexaflouride (UF{sub 6} and HF) systems were considered in the analysis over enrichments of 1.4 to 5 wt % {sup 235}U. Estimates of the minimum critical volume, minimum critical mass of uranium, and the minimum mass of moderator required for criticality are presented. There was significant disagreement between the values generated in this study when compared with a similar undocumented study performed in 1983 using ANISN and the Knight-modified Hansen-Roach cross sections. An investigation into the cause of the disagreement was made, and the results are presented.

Jordan, W.C.; Turner, J.C.

1992-12-01T23:59:59.000Z

119

SUB-MICROMETER RESOLUTION TRANSVERSE ELECTRON BEAM SIZE MEASUREMENT SYSTEM BASED ON OPTICAL TRANSITION  

E-Print Network [OSTI]

TRANSITION RADIATION A. Aryshev*, N. Terunuma, and J. Urakawa KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan Transition Radiation (OTR) appearing when a charged particle crosses a boundary between two media radiation (SR) PSF was applied at Swiss Light Source. The difficulty related to the SR measurements

Sheldon, Nathan D.

120

Homogeneous studies of transiting extrasolar planets – IV. Thirty systems with space-based light curves  

Science Journals Connector (OSTI)

......HAT-P-11 A in the Kepler light curve. This indicates a much...al. 2003). Further transit light curves were obtained by Gillon...et al. (2008). Two good light curves were presented by Winn...covering the transit on Christmas Day in 2007. The RM effect......

John Southworth

2011-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

Design and Optimization of a Feeder Demand Responsive Transit System in El Cenizo,TX  

E-Print Network [OSTI]

time interval of a new demand responsive transit "feeder" service within one representative colonia, El Cenizo. A comprehensive analysis of the results of a survey conducted through a questionnaire is presented to explain the existing travel patterns...

Chandra, Shailesh

2010-10-12T23:59:59.000Z

122

Ion-induced phase transition in the Au–In system  

Science Journals Connector (OSTI)

The Au–In equilibrium phase diagram exhibits a large number of intermetallic phases which have recently been explored via perturbed...111In probes. In the present work we report on the phase transition from Au7In

A. Kuli?ska; P. Wodniecki; M. Uhrmacher; K.P. Lieb

123

Essays on transition challenges for alternative propulsion vehicles and transportation systems  

E-Print Network [OSTI]

Technology transitions require the formation of a self-sustaining market through alignment of consumers' interests, producers' capabilities, infrastructure development, and regulations. In this research I develop a broad ...

Struben, Jeroen J. R

2006-01-01T23:59:59.000Z

124

Determination of characteristic alterations of the mass transfer process of thermodynamically nonequilibrium hydrocarbon systems  

SciTech Connect (OSTI)

The results of research on hydrocarbon mixture sorption in porous medium showed that adsorbent activity with regard to separate components of a gas mixture changes in partial dependence on pressure. The alteration of vented gas content will take place not only in gas condensate fields, when this effect is conditioned by the losses of condensate in the stratum, but also in gas fields, by methods connected with desorption processes. At the same time, gas composition is the basis for different process calculations, such as separation, gas transport, gas filtration in porous medium, and others. Thus the determination of characteristic alterations of gas mixture composition in thermodynamically nonequilibrium hydrocarbon systems mass transfer process becomes important. The binary (methane + pentane) and tricomponent (methane + butane + pentane) systems composed of individual gases of high purity have been researched. Then with help of mathematical methods of experimental data processing the moment of the more characteristic changes of the mass transfer process was discovered. Processing of experimental data for tricomponent system by statistical differentiation allowed the discovery of a pressure below of which lightening of the vented gas was observed.

Ramazanova, E.E.; Nurmamedova, Z.A. [Azerbaijan State Oil Academy, Baku (Azerbaijan). Geotechnological Research Inst. of Oil, Gas, and Chemistry

1997-06-01T23:59:59.000Z

125

Colliding Winds in Low-Mass Binary Star Systems: wind interactions and implications for habitable planets  

E-Print Network [OSTI]

Context. In binary star systems, the winds from the two components impact each other, leading to strong shocks and regions of enhanced density and temperature. Potentially habitable circumbinary planets must continually be exposed to these interactions regions. Aims. We study, for the first time, the interactions between winds from low-mass stars in a binary system, to show the wind conditions seen by potentially habitable circumbinary planets. Methods. We use the advanced 3D numerical hydrodynamic code Nurgush to model the wind interactions of two identical winds from two solar mass stars with circular orbits and a binary separation of 0.5 AU. As input into this model, we use a 1D hydrodynamic simulation of the solar wind, run using the Versatile Advection Code. We derive the locations of stable and habitable orbits in this system to explore what wind conditions potentially habitable planets will be exposed to during their orbits. Results. Our wind interaction simulations result in the formation of two stron...

Johnstone, C P; Pilat-Lohinger, E; Bisikalo, D; Güdel, M; Eggl, S

2015-01-01T23:59:59.000Z

126

Bakamjian-Thomas mass operator for the few-nucleon system from chiral dynamics  

E-Print Network [OSTI]

We present an exploratory study consisting in the formulation of a relativistic quantum mechanics to describe the few-nucleon system at low energy, starting from the quantum field theoretical chiral Lagrangian involving pions and nucleons. To this aim we construct a Bakamjian-Thomas mass operator and perform a truncation of the Fock space which respects at each stage the relativistic covariance. Such truncation is justified, at sufficiently low energy, in the framework of a systematic chiral expansion. As an illustration we discuss the bound state observables and low-energy phaseshifts of the nucleon-nucleon and pion-nucleon scattering at the leading order of our scheme.

L. Girlanda; W. H. Klink; M. Viviani

2007-02-07T23:59:59.000Z

127

Ion Induced Lamellar-Lamellar Phase Transition in Charged Surfactant Systems  

E-Print Network [OSTI]

We propose a model for the liquid-liquid phase transition observed in osmotic pressure measurements of certain charged lamellae-forming amphiphiles. The model free energy combines mean-field electrostatic and phenomenological non-electrostatic interactions, while the number of dissociated counterions is treated as a variable degree of freedom that is determined self-consistently. The model, therefore, joins two well-known theories: the Poisson-Boltzmann theory for ionic solutions between charged lamellae, and Langmuir-Frumkin-Davies adsorption isotherm modified to account for charged adsorbing species. Minimizing the appropriate free energy for each interlamellar spacing, we find the ionic density profiles and the resulting osmotic pressure. While in the simple Poisson-Boltzmann theory the osmotic pressure isotherms are always smooth, we observe a discontinuous liquid-liquid phase transition when Poisson-Boltzmann theory is self-consistently augmented by Langmuir-Frumkin-Davies adsorption. This phase transition depends on the area per amphiphilic headgroup, as well as on non-electrostatic interactions of the counterions with the lamellae, and interactions between counterion-bound and counterion-dissociated surfactants. Coupling lateral phase transition in the bilayer plane with electrostatic interactions in the bulk, our results offer a qualitative explanation for the existence of the phase-transition of DDABr (didodecyldimethylammonium bromide), but its apparent absence for the chloride and the iodide homologues. More quantitative comparisons with experiment require better understanding of the microscopic basis of the phenomenological model parameters.

Daniel Harries; Rudi Podgornik; V. Adrian Parsegian; Etay Mar-Or; David Andelman

2005-07-11T23:59:59.000Z

128

X-ray reflection in accreting stellar-mass black hole systems  

E-Print Network [OSTI]

The X-ray spectra of accreting stellar-mass black hole systems exhibit spectral features due to reflection, especially broad iron K alpha emission lines. We investigate the reflection by the accretion disc that can be expected in the high/soft state of such a system. First, we perform a self-consistent calculation of the reflection that results from illumination of a hot, inner portion of the disc with its atmosphere in hydrostatic equilibrium. Then we present reflection spectra for a range of illumination strengths and disc temperatures under the assumption of a constant-density atmosphere. Reflection by a hot accretion disc differs in important ways from that of a much cooler disc, such as that expected in an active galactic nucleus.

R. R. Ross; A. C. Fabian

2007-09-03T23:59:59.000Z

129

Experimental observation of a phase transition in the evolution of many-body systems with dipolar interactions  

E-Print Network [OSTI]

Non-equilibrium dynamics of many-body systems is important in many branches of science, such as condensed matter, quantum chemistry, and ultracold atoms. Here we report the experimental observation of a phase transition of the quantum coherent dynamics of a 3D many-spin system with dipolar interactions, and determine its critical exponents. Using nuclear magnetic resonance (NMR) on a solid-state system of spins at room-temperature, we quench the interaction Hamiltonian to drive the evolution of the system. The resulting dynamics of the system coherence can be localized or extended, depending on the quench strength. Applying a finite-time scaling analysis to the observed time-evolution of the number of correlated spins, we extract the critical exponents v = s = 0.42 around the phase transition separating a localized from a delocalized dynamical regime. These results show clearly that such nuclear-spin based quantum simulations can effectively model the non-equilibrium dynamics of complex many-body systems, such as 3D spin-networks with dipolar interactions.

Gonzalo A. Alvarez; Dieter Suter; Robin Kaiser

2014-09-16T23:59:59.000Z

130

Homogeneous studies of transiting extrasolar planets – IV. Thirty systems with space-based light curves  

Science Journals Connector (OSTI)

......results are viable. Agreement between the two data sets is not good and can be attributed to information loss at the long cadence...data sets now available for transiting planets. The following internet-based resources were used in research for this paper: the......

John Southworth

2011-11-01T23:59:59.000Z

131

Energy performance evaluation of fishing vessels by fuel mass flow measuring system  

Science Journals Connector (OSTI)

A new fuel consumption monitoring system was set up for research purpose in order to evaluate the energy performance of fishing vessels under different operating conditions. The system has been tested on two semi-pelagic pair trawlers in the Adriatic Sea with an engine power of around 900 kW, and with length overall of around 30 m. Both vessels work with a gear of similar design and size, the differences between the two vessels are in the propeller design and the hull material: the first with a controllable pitch propeller (CPP) and a metal hull, the second with a fixed pitch propeller (FPP) and a wooden hull. The fuel monitoring system conceived at CNR-ISMAR Ancona (Italy) consists of two mass flow sensors, one multichannel recorder and one GPS data logger. The working time duration, the vessel speed, the total fuel consumption and the instant fuel rate were logged by the system. A typical commercial round trip for a semi-pelagic trawler consists of several fishing operations (steaming, trawling sailing, etc.). Fuel consumption rate and vessel speed data were used to identify energy performance under different vessel-operating conditions. The highest fuel demands were during the trawling (130 l/h at 4.4 kn) and the steaming (100–130 l/h at 11 kn) phases. Fuel savings of up to 15% could be obtained by reducing the navigation speed of half a knot.

Antonello Sala; Francesco De Carlo; Gabriele Buglioni; Alessandro Lucchetti

2011-01-01T23:59:59.000Z

132

Transformations between 2MASS, SDSS and BVRI photometric systems: bridging the near infrared and optical  

E-Print Network [OSTI]

We present colour transformations for the conversion of the {\\em 2MASS} photometric system to the Johnson-Cousins $UBVRI$ system and further into the {\\em SDSS} $ugriz$ system. We have taken {\\em SDSS} $gri$ magnitudes of stars measured with the 2.5-m telescope from $SDSS$ Data Release 5 (DR5), and $BVRI$ and $JHK_{s}$ magnitudes from Stetson's catalogue and \\citet{Cu03}, respectively. We matched thousands of stars in the three photometric systems by their coordinates and obtained a homogeneous sample of 825 stars by the following constraints, which are not used in previous transformations: 1) the data are de-reddened, 2) giants are omitted, and 3) the sample stars selected are of the highest quality. We give metallicity, population type, and transformations dependent on two colours. The transformations provide absolute magnitude and distance determinations which can be used in space density evaluations at short distances where some or all of the {\\em SDSS} $ugriz$ magnitudes are saturated. The combination of these densities with those evaluated at larger distances using {\\em SDSS} $ugriz$ photometry will supply accurate Galactic model parameters, particularly the local space densities for each population.

S. Bilir; S. Ak; S. Karaali; A. Cabrera-Lavers; T. S. Chonis; C. M. Gaskell

2007-11-27T23:59:59.000Z

133

Non-extensive Hamiltonian systems follow Boltzmann's principle not Tsallis statistics. -- Phase Transitions, Second Law of Thermodynamics  

E-Print Network [OSTI]

Boltzmann's principle S(E,N,V)=k*ln W(E,N,V) relates the entropy to the geometric area e^{S(E,N,V)} of the manifold of constant energy in the N-body phase space. From the principle all thermodynamics and especially all phenomena of phase transitions and critical phenomena can be deduced. The topology of the curvature matrix C(E,N) (Hessian) of S(E,N) determines regions of pure phases, regions of phase separation, and (multi-)critical points and lines. Thus, C(E,N) describes all kind of phase-transitions with all their flavor. No assumptions of extensivity, concavity of S(E), or additivity have to be invoked. Thus Boltzmann's principle and not Tsallis statistics describes the equilibrium properties as well the approach to equilibrium of extensive and non-extensive Hamiltonian systems. No thermodynamic limit must be invoked.

D. H. E. Gross

2001-06-25T23:59:59.000Z

134

Development of novel nano-composite membranes as introduction systems for mass spectrometers: Contrasting nano-composite membranes and conventional inlet systems.  

E-Print Network [OSTI]

??This dissertation presents the development of novel nano-composite membranes as introduction systems for mass spectrometers. These nano-composite membranes incorporate anodic aluminum oxide (AAO) membranes as… (more)

Miranda, Luis

2013-01-01T23:59:59.000Z

135

National Renewable Energy Laboratory's Hydrogen Technologies and Systems Center is Helping to Facilitate the Transition to a New Energy Future  

SciTech Connect (OSTI)

The Hydrogen Technologies and Systems Center (HTSC) at the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) uses a systems engineering and integration approach to hydrogen research and development to help the United States make the transition to a new energy future - a future built on diverse and abundant domestic renewable resources and integrated hydrogen systems. Research focuses on renewable hydrogen production, delivery, and storage; fuel cells and fuel cell manufacturing; technology validation; safety, codes, and standards; analysis; education; and market transformation. Hydrogen can be used in fuel cells to power vehicles and to provide electricity and heat for homes and offices. This flexibility, combined with our increasing demand for energy, opens the door for hydrogen power systems. HTSC collaborates with DOE, other government agencies, industry, communities, universities, national laboratories, and other stakeholders to promote a clean and secure energy future.

Not Available

2011-01-01T23:59:59.000Z

136

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Application  

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

Mass Production Cost Estimation for Direct H 2 PEM Fuel Cell Systems for Automotive Applications: 2008 Update March 26, 2009 v.30.2021.052209 Prepared by: Brian D. James & Jeffrey A. Kalinoski One Virginia Square 3601 Wilson Boulevard, Suite 650 Arlington, Virginia 22201 703-243-3383 Prepared for: Contract No. GS-10F-0099J to the U.S. Department of Energy Energy Efficiency and Renewable Energy Office Hydrogen, Fuel Cells & Infrastructure Technologies Program Foreword Energy security is fundamental to the mission of the U.S. Department of Energy (DOE) and hydrogen fuel cell vehicles have the potential to eliminate the need for oil in the transportation sector. Fuel cell vehicles can operate on hydrogen, which can be produced domestically, emitting less greenhouse gas and pollutants than

137

Geodesic deviations: modeling extreme mass-ratio systems and their gravitational waves  

E-Print Network [OSTI]

The method of geodesic deviations has been applied to derive accurate analytic approximations to geodesics in Schwarzschild space-time. The results are used to construct analytic expressions for the source terms in the Regge-Wheeler and Zerilli-Moncrief equations, which describe the propagation of gravitational waves emitted by a compact massive object moving in the Schwarzschild background space-time. The wave equations are solved numerically to provide the asymptotic form of the wave at large distances for a series of non-circular bound orbits with periastron distances up to the ISCO radius, and the power emitted in gravitational waves by the extreme-mass ratio binary system is computed. The results compare well with those of purely numerical approaches.

G. Koekoek; J. W. van Holten

2011-03-29T23:59:59.000Z

138

EVALUATION OF ALTERNATE STAINLESS STEEL SURFACE TREATMENTS FOR MASS SPECTROSCOPY AND OTHER TRITIUM SYSTEMS  

SciTech Connect (OSTI)

There are specific components in the SRS Tritium Facilities that are required to introduce as few chemical impurities (such as protium and methane) as possible into the process gas. Two such components are the inlet systems for the mass spectroscopy facilities and hydrogen isotope mix standard containers. Two vendors now passivate stainless steel components for these systems, and both are relatively small businesses whose future viability can be questioned, which creates the need for new sources. Stainless steel containers were designed to evaluate alternate surface treatment vendors for tritium storage and handling for these high purity tritium systems. Five vendors applied their own 'best' surface treatments to two containers each - one was a current vendor, another was a chemical vapor deposited silicon coating, and the other three were electropolishing and chemical cleaning vendors. Pure tritium gas was introduced into all ten containers and the composition was monitored over time. The only observed impurities in the gas were some HT, less CT{sub 4}, and very small amounts of T{sub 2}O in all cases. The currently used vendor treated containers contained the least impurities. The chemical vapor deposited silicon treatment resulted in the highest impurity levels. Sampling one set of containers after about one month of tritium exposure revealed the impurity level to be nearly the same as that after more than a year of exposure - this result suggests that cleaning new stainless steel components by tritium gas contact for about a month may be a worthy operation.

Clark, E.; Mauldin, C.; Neikirk, K.

2012-02-29T23:59:59.000Z

139

The Mass Tracking System for the Integral Fast Reactor fuel cycle  

SciTech Connect (OSTI)

As part of the Fuel Cycle Facility (FCF) of Argonne National Laboratory`s Integral Fast Reactor (IFR) demonstration, a computer-based Mass-Tracking (MTG) System has been developed. The MTG System collects, stores, retrieves and processes data on all operations which directly affect the flow of process material through FCF and supports such activities as process modeling, compliance with operating limits (e.g., criticality safety), material control and accountability and operational information services. Its architecture is client/server, with input and output connections to operator`s equipment-control stations on the floor of FCF as well as to terminal sessions. Its heterogeneous database includes a relational-database manager as well as both binary and ASCII data files. The design of the database, and the software that supports it, is based on a model of discrete accountable items distributed in space and time and constitutes a complete historical record of the material processed in FCF. Although still under development, much of the MTG System has been qualified and is in production use.

Adams, C.H.; Beitel, J.C.; Birgersson, G.; Bucher, R.G.; Carrico, C.B.; Daly, T.A. [Argonne National Lab., IL (United States); Keyes, R.W. [Argonne National Lab., Idaho Falls, ID (United States)

1994-07-01T23:59:59.000Z

140

The Mass Tracking System -- Computerized support for MC and A and operations at FCF  

SciTech Connect (OSTI)

As part of Argonne National Laboratory`s Fuel Conditioning Facility (FCF), a computer-based Mass-Tracking (MTG) System has been developed. The MTG System collects, stores, retrieves and processes data on all operations which directly affect the flow of process material through FCF and supports such activities as process modeling, compliance with operating limits (e.g., criticality safety), material control and accountability and operational information services. Its architecture is client/server, with input and output connections to operator`s equipment-control stations on the floor of FCF as well as to dumb terminals and terminal emulators. Its heterogeneous database includes a relational-database manager as well as both binary and ASCII data files. The design of the database, and the software that supports it, is based on a model of discrete accountable items distributed in space and time and constitutes a complete historical record of the material processed in FCF. Although still under development, much of the MTG system has been qualified and is in production use.

Adams, C.H.; Beitel, J.C.; Birgersson, G.; Bucher, R.G.; Derstine, K.L.; Toppel, B.J. [Argonne National Lab., IL (United States); Goin, R.W.; Keyes, R.W.; Vollmer, M.A. [Argonne National Lab.-West, Idaho Falls, ID (United States)

1996-05-01T23:59:59.000Z

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


141

Modeling heat and mass transport phenomena at higher temperatures in solar distillation systems - The Chilton-Colburn analogy  

SciTech Connect (OSTI)

In the present investigation efforts have been devoted towards developing an analysis suitable for heat and mass transfer processes modeling in solar distillation systems, when they are operating at higher temperatures. For this purpose the use of Lewis relation is not new although its validity is based on the assumptions of identical boundary layer concentration and temperature distributions, as well as low mass flux conditions, which are not usually met in solar distillation systems operating at higher temperatures associated with considerable mass transfer rates. The present analysis, taking into consideration these conditions and the temperature dependence of all pertinent thermophysical properties of the saturated binary mixture of water vapor and dry air, leads to the development of an improved predictive accuracy model. This model, having undergone successful first order validation against earlier reported measurements from the literature, appears to offer more accurate predictions of the transport processes and mass flow rate yield of solar stills when operated at elevated temperatures. (author)

Tsilingiris, P.T. [Department of Energy Engineering, Heat Transfer Laboratory, Technological Education Institution of Athens, A. Spyridonos Street, GR 122 10 Egaleo, Athens (Greece)

2010-02-15T23:59:59.000Z

142

A combination of existing concepts and approaches to take on energy system transitions – The Republic of Panama as a case-study  

Science Journals Connector (OSTI)

Abstract The impact of our energy systems on the climate mandates an energy system transition. In this paper a combination of existing concepts and approaches to take on such transitions is discussed. This combination starts with first defining the unit of analysis, after which actors in the socio-technical energy system are charted through literature research and interviews. Next, using social network analysis, regimes and niches are identified to depict the unit of analysis in a more useful manner for managing transitions. The step hereafter consists of creating internal and external scenarios based on critical uncertainties to insure transition management efforts against uncertainty in and outside the unit of analysis. Moving to transition management, robustness analysis is then used to evaluate strategies and policies in all combinations of these internal and external scenarios to get to an optimum set of strategies and policies which are used to form a normative scenario. This will be used to get stakeholders behind the transition effort. This combination of approaches and concepts is used in the case of the Republic of Panama. It results in a clear overview of the energy system, impediments and opportunities regarding transition, possible futures, and the validity of strategies and policies in different scenarios.

Daniël A. Lachman

2014-01-01T23:59:59.000Z

143

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 96, NO. C8, PAGES 14,809-14,831, AUGUST 15, 1991 Currents and Water Masses of the Coastal Transition Zone  

E-Print Network [OSTI]

maderepeatedmesoscalesurveysof a grid extending200 km offshorebetween 37øN and 39øN in the coastal transition zone off northern.Thejet flowedsouthwestwardacrossthegridfromlateJuneuntil mid-July 1988, when thejet axis moved offshorein the north and onshorein the southernportion of the grid. Temperature-salinityanalysisshowsthatjet waterscanbe distinguishedfrom both

Pierce, Stephen

144

Simulations of flame acceleration and deflagration-to-detonation transitions in methane-air systems  

SciTech Connect (OSTI)

Flame acceleration and deflagration-to-detonation transitions (DDT) in large obstructed channels filled with a stoichiometric methane-air mixture are simulated using a single-step reaction mechanism. The reaction parameters are calibrated using known velocities and length scales of laminar flames and detonations. Calculations of the flame dynamics and DDT in channels with obstacles are compared to previously reported experimental data. The results obtained using the simple reaction model qualitatively, and in many cases, quantitatively match the experiments and are found to be largely insensitive to small variations in model parameters. (author)

Kessler, D.A.; Gamezo, V.N.; Oran, E.S. [Laboratory for Computational Physics and Fluid Dynamics, Naval Research Laboratory, Washington, DC (United States)

2010-11-15T23:59:59.000Z

145

Studies of high temperature ternary phases in mixed-metal-rich early transition metal sulfide and phosphide systems  

SciTech Connect (OSTI)

Investigations of ternary mixed early transition metal-rich sulfide and phosphide systems resulted in the discovery of new structures and new phases. A new series of Zr and Hf - group V transition metal - sulfur K-phases was synthesized and crystallographically characterized. When the group V transition metal was Nb or Ta, the unit cell volume was larger than any previously reported K-phase. The presence of adventitious oxygen was determined in two K-phases through a combination of neutron scattering and X-ray diffraction experiments. A compound Hf{sub 10}Ta{sub 3}S{sub 3} was found to crystallize in a new-structure type similar to the known gamma brasses. This structure is unique in that it is the only reported {open_quotes}stuffed{close_quotes} gamma-brass type structure. The metal components, Hf and Ta, are larger in size and more electropositive than the metals found in normal gamma brasses (e.g. Cu and Zn) and because of the larger metallic radii, sulfur can be incorporated into the structure where it plays an integral role in stabilizing this phase relative to others. X-ray single-crystal, X-ray powder and neutron powder refinements were performed on this structure. A new structure was found in the ternary Nb-Zr-P system which has characteristics in common with many known early transition metal-rich sulfides, selenides, and phosphides. This structure has the simplest known interconnection of the basic building blocks known for this structural class. Anomalous scattering was a powerful tool for differentiating between Zr and Nb when using Mo K{alpha} X-radiation. The compounds ZrNbP and HfNbP formed in the space group Prima with the simple Co{sub 2}Si structure which is among the most common structures found for crystalline solid materials. Solid solution compounds in the Ta-Nb-P, Ta-Zr-P, Nb-Zr-P, Hf-Nb-P, and Hf-Zr-S systems were crystallographically characterized. The structural information corroborated ideas about bonding in metal-rich compounds.

Marking, G.A.

1994-01-04T23:59:59.000Z

146

Federal Transit Administration-National Transit Database (NTD) | Open  

Open Energy Info (EERE)

Federal Transit Administration-National Transit Database (NTD) Federal Transit Administration-National Transit Database (NTD) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Federal Transit Administration-National Transit Database (NTD) Agency/Company /Organization: Federal Transit Administration Sector: Energy Focus Area: Transportation Resource Type: Dataset User Interface: Website Website: www.ntdprogram.gov/ntdprogram/ Cost: Free Language: English Federal Transit Administration-National Transit Database (NTD) Screenshot References: National Transit Database[1] "The NTD was established by Congress to be the Nation's primary source for information and statistics on the transit systems of the United States. Recipients or beneficiaries of grants from the Federal Transit Administration (FTA) under the Urbanized Area Formula Program (§5307) or

147

Constraining the Mass Profiles of Stellar Systems: Schwarzschild Modeling of Discrete Velocity Datasets  

E-Print Network [OSTI]

(ABRIDGED) We present a new Schwarzschild orbit-superposition code designed to model discrete datasets composed of velocities of individual kinematic tracers in a dynamical system. This constitutes an extension of previous implementations that can only address continuous data in the form of (the moments of) velocity distributions, thus avoiding potentially important losses of information due to data binning. Furthermore, the code can handle any combination of available velocity components, i.e., only line-of-sight velocities, only proper motions, or a combination of both. It can also handle a combination of discrete and continuous data. The code finds the distribution function (DF, a function of the three integrals of motion E, Lz, and I3) that best reproduces the available kinematic and photometric observations in a given axisymmetric gravitational potential. The fully numerical approach ensures considerable freedom on the form of the DF f(E,Lz,I3). This allows a very general modeling of the orbital structure, thus avoiding restrictive assumptions about the degree of (an)isotropy of the orbits. We describe the implementation of the discrete code and present a series of tests of its performance based on the modeling of simulated datasets generated from a known DF. We find that the discrete Schwarzschild code recovers the original orbital structure, M/L ratios, and inclination of the input datasets to satisfactory accuracy, as quantified by various statistics. The code will be valuable, e.g., for modeling stellar motions in Galactic globular clusters, and those of individual stars, planetary nebulae, or globular clusters in nearby galaxies. This can shed new light on the total mass distributions of these systems, with central black holes and dark matter halos being of particular interest.

Julio Chanamé; Jan Kleyna; Roeland van der Marel

2008-04-21T23:59:59.000Z

148

Mass Spectrometry | EMSL  

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

and Microfabrication Mass Spectrometry Microscopy Molecular Science Computing NMR and EPR Spectroscopy and Diffraction Subsurface Flow and Transport Mass Spectrometry Systems...

149

On the Selection of Photometric Planetary Transits  

E-Print Network [OSTI]

We present a new method for differentiating between planetary transits and eclipsing binaries based on the presence of the ellipsoidal light variations. These variations can be used to detect stellar secondaries with masses ~0.2 M_sun orbiting sun-like stars at a photometric accuracy level which has already been achieved in transit surveys. By removing candidates exhibiting this effect it is possible to greatly reduce the number of objects requiring spectroscopic follow up with large telescopes. Unlike the usual candidate selection method, which are primarily based on the estimated radius of the orbiting object, this technique is not biased against bona-fide planets and brown dwarfs with large radii, because the amplitude of the effect depends on the transiting object's mass and orbital distance. In many binary systems, where a candidate planetary transit is actually due to the partial eclipse of two normal stars, the presence of flux variations due to the gravity darkening effect will show the true nature of these systems. We show that many of the recent OGLE-III photometric transit candidates exhibit the presence of significant variations in their light curves and are likely to be due to stellar secondaries. We find that the light curves of white dwarf transits will generally not mimic those of small planets because of significant gravitationally induced flux variations. We discuss the relative merits of methods used to detect transit candidates which are due to stellar blends rather than planets. We outline how photometric observations taken in two bands can be used to detect the presence of stellar blends.

A. J. Drake

2003-01-15T23:59:59.000Z

150

Development Of Control Oriented Electrical And Thermal Models Of An Electric Transit Bus Battery System.  

E-Print Network [OSTI]

??This thesis presents the insights derived from the empirical characterization, modeling, simulation, control-design, and verification tasks performed in developing energy storage system (ESS) controls for… (more)

Kunte, Harshad

2014-01-01T23:59:59.000Z

151

918 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 54, NO. 4, APRIL 2009 PI-Funnel Control for Two Mass Systems  

E-Print Network [OSTI]

disturbances are rejected. Finally, the controllers are implemented on a real plant, an electrical drive. Index Terms--Adaptive control, electric drives, tracking, two mass sys- tems. I. INTRODUCTION We control. Schuster is with the Institute of Electrical Drive Systems, Technical Uni- versity Munich, Munich 80333

Knobloch,Jürgen

152

Kinematic deprojection and mass inversion of spherical systems of known velocity anisotropy  

Science Journals Connector (OSTI)

......models with the first four of these anisotropy...than 70 per cent (in four cases out of five...practical means to lift the mass-anisotropy...velocity field at each point, or else its moments...except at the innermost point where the mass is...10 per cent in the four anisotropy models......

Gary A. Mamon; Gwenaël Boué

2010-02-01T23:59:59.000Z

153

Thermodynamics of system with density- and/or temperature-dependent mass particles  

E-Print Network [OSTI]

The thermodynamics with medium effects expressed by the dispersion relation of the temperature and density dependent particle mass is studied. Many previous treatments have been reviewed. A new thermodynamical treatment based on the equilibrium state is suggested. Employing the quark mass density- and temperature-dependent model, the discrepancies between our treatment and others are addressed.

Shaoyu Yin; Ru-Keng Su

2007-04-27T23:59:59.000Z

154

Applied fractionalization : quantum phases and phase transitions of strongly interacting systems  

E-Print Network [OSTI]

Strongly correlated systems present interesting challenges in condensed matter physics. On the one hand, the theoretical work in the last two decades suggests that strong interactions may lead to new phases and phase ...

Grover, Tarun, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

155

Deconfinement phase transition in hybrid neutron stars from the Brueckner theory with three-body forces and a quark model with chiral mass scaling  

E-Print Network [OSTI]

We study the properties of strange quark matter in equilibrium with normal nuclear matter. Instead of using the conventional bag model in quark sector, we achieve the confinement by a density-dependent quark mass derived from in-medium chiral condensates. In nuclear matter, we adopt the equation of state from the Brueckner-Bethe-Goldstone approach with three-body forces. It is found that the mixed phase can occur, for a reasonable confinement parameter, near the normal nuclear saturation density, and goes over into pure quark matter at about 5 times the saturation. The onset of mixed and quark phases is compatible with the observed class of low-mass neutron stars, but it hinders the occurrence of kaon condensation.

G. X. Peng; A. Li; U. Lombardo

2008-07-01T23:59:59.000Z

156

Limits on the temporal variation of the fine structure constant, quark masses and strong interaction from quasar absorption spectra and atomic clock experiments  

E-Print Network [OSTI]

We perform calculations of the dependence of nuclear magnetic moments on quark masses and obtain limits on the variation of $(m_q/\\Lambda_{QCD})$ from recent measurements of hydrogen hyperfine (21 cm) and molecular rotational transitions in quasar absorption systems, atomic clock experiments with hyperfine transitions in H, Rb, Cs, Yb$^+$, Hg$^+$ and optical transition in Hg$^+$. Experiments with Cd$^+$, deuterium/hydrogen, molecular SF$_6$ and Zeeman transitions in $^3$He/Xe are also discussed.

V. V. Flambaum; D. B. Leinweber; A. W. Thomas; R. D. Young

2004-02-10T23:59:59.000Z

157

Transition Plan | Department of Energy  

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

and training needs for system operation and maintenance, planning for data migration, etc Transition Plan More Documents & Publications System Design Feasibility Study Report...

158

A constant-mass fuel delivery system for use in underwater autonomous vehicles  

E-Print Network [OSTI]

This thesis describes the design and assembly of two constant-mass fuel tanks to be used in autonomous underwater vehicles (AUVs). The fuel tanks are part of a power supply designed to increase AUV endurance without limiting ...

Saxton-Fox, Theresa Ann

2012-01-01T23:59:59.000Z

159

System for studying a sample of material using a heavy ion induced mass spectrometer source  

DOE Patents [OSTI]

A heavy ion generator is used with a plasma desorption mass spectrometer to provide an appropriate neutron flux in the direction of a fissionable material in order to desorb and ionize large molecules from the material for mass analysis. The heavy ion generator comprises a fissionable material having a high n,f reaction cross section. The heavy ion generator also comprises a pulsed neutron generator that is used to bombard the fissionable material with pulses of neutrons, thereby causing heavy ions to be emitted from the fissionable material. These heavy ions impinge on a material, thereby causing ions to desorb off that material. The ions desorbed off the material pass through a time-of-flight mass analyzer, wherein ions can be measured with masses greater than 25,000 amu.

Fries, David P. (St. Petersburg, FL); Browning, James F. (Palm Harbour, FL)

1998-01-01T23:59:59.000Z

160

Transition from a dissipative to a quasi-elastic system of particles with tunable repulsive interactions  

E-Print Network [OSTI]

A two-dimensional system of particles with tunable repulsive interactions is experimentally investigated. Soft ferromagnetic particles are placed on a vibrating rough plate and vertically confined, so that they perform a horizontal Brownian motion in a cell. When immersed in an external vertical magnetic field, the particles become magnetised and thus interact according to a dipolar repulsive law. As the amplitude of the magnetic field is increased, magnetic repulsion raises and the rate of inelastic collisions decreases. Studying the pair correlation function and the particle velocity distributions, we show that the typical properties of such a dissipative out-of-equilibrium granular gas are progressively lost, to approach those expected for a usual gas at thermodynamic equilibrium. For stronger interaction strengths, the system gradually solidifies towards a hexagonal crystal. This new setup could consequently be used as a model experimental system for out-of-equilibrium statistical physics, in which the distance to the quasi-elastic limit can be accurately controlled.

Simon Merminod; Michaël Berhanu; Eric Falcon

2014-04-15T23:59:59.000Z

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


161

Spectropolarimetric observations of the transiting planetary system of the K dwarf HD 189733  

E-Print Network [OSTI]

With a Jupiter-mass planet orbiting at a distance of only 0.031 AU, the active K2 dwarf HD 189733 is a potential candidate in which to study the magnetospheric interactions of a cool star with its recently-discovered close-orbiting giant planet. We decided to explore the strength and topology of the large-scale magnetosphere of HD 189733, as a future benchmark for quantitative studies for models of the star/planet magnetic interactions. To this end, we used ESPaDOnS, the new generation spectropolarimeter at the Canada-France-Hawaii 3.6m telescope, to look for Zeeman circular polarisation signatures in the line profiles of HD 189733 in 2006 June and August. Zeeman signatures in the line profiles of HD 189733 are clearly detected in all spectra, demonstrating that a field is indeed present at the surface of the star. The Zeeman signatures are not modulated with the planet's orbital period but apparently vary with the stellar rotation cycle. The reconstructed large-scale magnetic field, whose strength reaches a ...

Moutou, C; Savalle, R; Hussain, G; Alecian, E; Bouchy, F; Catala, C; Cameron, A Collier; Udry, S; Vidal-Madjar, A

2007-01-01T23:59:59.000Z

162

Computational Studies of the Electronic Structures and Mechanisms of Late Transition Metal Systems  

E-Print Network [OSTI]

that were studied. The first system focuses on the formation of a carbon-bromine bond from the reaction of Ni(Ar)(Br)(pic) (Ar = 2-phenylpyridine, pic = 2-picoloine) with Br2. Unlike the typical behavior of heavier group 10 metals that have a wider range...

Pitts, Amanda

2013-08-27T23:59:59.000Z

163

Mott transition and crossover in quasi-one-dimensional electron-hole systems  

SciTech Connect (OSTI)

Manybody effects in the quasi-one-dimensional electron-hole systems are investigated under a thermal equilibrium. We figure out the Mott physics developing a self-consistent screened T-matrix approximation, by presenting a global phase diagram in terms of the exciton ionization ratio and temperature. Relevance to the optical absorption spectra is also discussed.

Asano, Kenichi [Department of Physics, Osaka University, 1-1 Machikaneyama, Toyonaka (Japan)

2013-12-04T23:59:59.000Z

164

New limit on the mass of 9.4-keV solar axions emitted in an M1 transition in $^{83}$Kr nuclei  

E-Print Network [OSTI]

A search for resonant absorption of the solar axion by $^{83}\\rm{Kr}$ nuclei was performed using the proportional counter installed inside the low-background setup at the Baksan Neutrino Observatory. The obtained model independent upper limit on the combination of isoscalar and isovector axion-nucleon couplings $|g_3-g_0|\\leq 1.69\\times 10^{-6}$ allowed us to set the new upper limit on the hadronic axion mass of $m_{A}\\leq 130$ eV (95\\% C.L.) with the generally accepted values $S$=0.5 and $z$=0.56.

Derbin, A V; Gavrilyuk, Yu M; Kazalov, V V; Kim, H J; Kim, Y D; Kobychev, V V; Kuzminov, V V; Ali, Luqman; Muratova, V N; Panasenko, S I; Ratkevich, S S; Semenov, D A; Tekueva, D A; Yakimenko, S P; Unzhakov, E V

2015-01-01T23:59:59.000Z

165

Theoretical study of intraband optical transitions in conduction band of dot-in-a-well system  

SciTech Connect (OSTI)

We study numerically absorption optical spectra of n-doped InAs/In{sub 015}Ga{sub 085}As/GaAs quantum dot-in-a-well systems. The absorption spectra are mainly determined by the size of a quantum dot and have weak dependence on the thickness of quantum well and position of the dot in a well. The dot-in-a-well system is sensitive to both in-plane and out-of-plane polarizations of the incident light with much stronger absorption intensities for the in-plane-polarized light. The absorption spectrum of in-plane-polarized light has also a multi-peak structure with two or three peaks of comparable intensities, while the absorption spectrum of out-of-plane polarized light has a single well-pronounced peak.

Chaganti, Venkata R.; Apalkov, Vadym [Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30302 USA. (Georgia)] [Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30302 USA. (Georgia)

2014-02-15T23:59:59.000Z

166

Systems for low frequency seismic and infrasound detection of geo-pressure transition zones  

DOE Patents [OSTI]

Methods for determining the existence and characteristics of a gradational pressurized zone within a subterranean formation are disclosed. One embodiment involves employing an attenuation relationship between a seismic response signal and increasing wavelet wavelength, which relationship may be used to detect a gradational pressurized zone and/or determine characteristics thereof. In another embodiment, a method for analyzing data contained within a response signal for signal characteristics that may change in relation to the distance between an input signal source and the gradational pressurized zone is disclosed. In a further embodiment, the relationship between response signal wavelet frequency and comparative amplitude may be used to estimate an optimal wavelet wavelength or range of wavelengths used for data processing or input signal selection. Systems for seismic exploration and data analysis for practicing the above-mentioned method embodiments are also disclosed.

Shook, G. Michael (Idaho Falls, ID); LeRoy, Samuel D. (Houston, TX); Benzing, William M. (Tulsa, OK)

2007-10-16T23:59:59.000Z

167

Low-lying E1,M1, and E2 strength distributions in {sup 124,126,128,129,130,131,132,134,136}Xe: Systematic photon scattering experiments in the mass region of a nuclear shape or phase transition  

SciTech Connect (OSTI)

Systematic nuclear resonance fluorescence (NRF) experiments on all nine stable (seven even-even and two odd-mass) Xe isotopes have been performed at the bremsstrahlung facility of the 4.3-MV Stuttgart Dynamitron accelerator. For the first time thin-walled, high-pressure gas targets (about 70 bar) with highly enriched target material were used in NRF experiments. Precise excitation energies, transition strengths, spins, and decay branching ratios were obtained for numerous states, most of them previously unknown. The systematics of the observed E1 two-phonon excitations (2{sup +}x3{sup -}) and M1 excitations to 1{sup +} mixed-symmetry states in the even-even isotopes are discussed with respect to the new critical point symmetry E(5). The fragmentation of these fundamental dipole excitation modes in the odd-mass isotopes {sup 129,131}Xe is shown and discussed. In the even-even nuclei several low-lying E2 excitations were observed.

Garrel, H. von; Kneissl, U.; Kohstall, C.; Pitz, H.H.; Scheck, M.; Stedile, F.; Walter, S. [Institut fuer Strahlenphysik, Universitaet Stuttgart, D-70569 Stuttgart (Germany); Brentano, P. von; Fransen, C.; Friessner, G.; Hollmann, N.; Jolie, J.; Linnemann, A.; Muecher, D.; Pietralla, N.; Scholl, C.; Werner, V. [Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Cologne (Germany); Kaeppeler, F.; Wisshak, K. [Institut fuer Kernphysik, Forschungszentrum Karlsruhe, D-76021 Karlsruhe (Germany); Kaeubler, L. [Institut fuer Kern- und Hadronenphysik, Forschungszentrum Rossendorf, D-01314 Dresden (Germany)] (and others)

2006-05-15T23:59:59.000Z

168

The Transit Light Curve Project. X. A Christmas Transit of HD 17156b  

E-Print Network [OSTI]

Photometry is presented of the Dec. 25, 2007 transit of HD 17156b, which has the longest orbital period and highest orbital eccentricity of all the known transiting exoplanets. New measurements of the stellar radial velocity are also presented. All the data are combined and integrated with stellar-evolutionary modeling to derive refined system parameters. The planet's mass and radius are found to be 3.212_{-0.082}^{+0.069} Jupiter masses and 1.023_{-0.055}^{+0.070} Jupiter radii. The corresponding stellar properties are 1.263_{-0.047}^{+0.035} solar masses and 1.446_{-0.067}^{+0.099} solar radii. The planet is smaller by 1 sigma than a theoretical solar-composition gas giant with the same mass and equilibrium temperature, a possible indication of heavy-element enrichment. The midtransit time is measured to within 1 min, and shows no deviation from a linear ephemeris (and therefore no evidence for orbital perturbations from other planets). We provide ephemerides for future transits and superior conjunctions. T...

Winn, Joshua N; Henry, Gregory W; Torres, Guillermo; Fischer, Debra; Johnson, John Asher; Marcy, Geoffrey W; Shporer, Avi; Mazeh, Tsevi

2008-01-01T23:59:59.000Z

169

The Transit Light Curve Project. X. A Christmas Transit of HD 17156b  

E-Print Network [OSTI]

Photometry is presented of the Dec. 25, 2007 transit of HD 17156b, which has the longest orbital period and highest orbital eccentricity of all the known transiting exoplanets. New measurements of the stellar radial velocity are also presented. All the data are combined and integrated with stellar-evolutionary modeling to derive refined system parameters. The planet's mass and radius are found to be 3.212_{-0.082}^{+0.069} Jupiter masses and 1.023_{-0.055}^{+0.070} Jupiter radii. The corresponding stellar properties are 1.263_{-0.047}^{+0.035} solar masses and 1.446_{-0.067}^{+0.099} solar radii. The planet is smaller by 1 sigma than a theoretical solar-composition gas giant with the same mass and equilibrium temperature, a possible indication of heavy-element enrichment. The midtransit time is measured to within 1 min, and shows no deviation from a linear ephemeris (and therefore no evidence for orbital perturbations from other planets). We provide ephemerides for future transits and superior conjunctions. There is an 18% chance that the orbital plane is oriented close enough to edge-on for secondary eclipses to occur at superior conjunction. Observations of secondary eclipses would reveal the thermal emission spectrum of a planet that experiences unusually large tidal heating and insolation variations.

Joshua N. Winn; Matthew J. Holman; Gregory W. Henry; Guillermo Torres; Debra Fischer; John Asher Johnson; Geoffrey W. Marcy; Avi Shporer; Tsevi Mazeh

2008-10-26T23:59:59.000Z

170

AC Transit  

Broader source: Energy.gov [DOE]

AC Transit (or the Alameda-Contra Costa Transit District) is based in Oakland, California, and provides transportation services to the East Bay of San Francisco. The 360-square-mile service area includes 13 cities and adjacent unincorporated areas in Alameda and Contra Costa counties. AC Transit's approximately 638 vehicles serve more than 65 million annual passengers.

171

Magnetic Flares and State Transitions in Galactic Black Hole and Neutron Star Systems  

E-Print Network [OSTI]

We here examine the conditions of the two-phase disk model under which magnetic flares arise above the cold accretion disk due to magnetic buoyancy and produce X-rays via Comptonization of the disk's soft radiation. We find that the disk's ability to produce strong magnetic flares is substantially diminished in its radiation dominated regions due to the diffusion of radiation into the magnetic flux tubes. Using a simplified, yet physically self-consistent, model that takes this effect into account, we show that the hard X-ray spectrum of some GBHCs can be explained as the X-ray emission by magnetic flares only when the disk's bolometric luminosity is a relatively small fraction ($\\sim$ 5%) of the Eddington value, $L_{Edd}$. Further, we compute the hard ($20-200$ keV) and soft ($1-20$ keV) X-ray power as a function of the disk's luminosity, and find an excellent agreement with the available data for GBHC transient and persistent sources. We conclude that the observed high-energy spectrum of stellar-sized accretion disk systems can be explained by Comptonization of the disk's soft radiation by the hot gas trapped inside the magnetic flares when the luminosity falls in the range $\\sim 10^{-3}-10^{-1}\\times L_{Edd}$. For higher luminosities, another emission mechanism must be at work. For lower luminosities, the X-ray emissivity may still be dominated by magnetic flares, but this process is more likely to be thermal or non-thermal bremstrahlung, so that the X-ray spectrum below $\\sim 10^{-3}L_{Edd}$ may be quite distinct from the typical hard spectrum for higher luminosities.

Sergei Nayakshin; Fulvio Melia

1997-10-21T23:59:59.000Z

172

Ultrasound in gas–liquid systems: Effects on solubility and mass transfer  

Science Journals Connector (OSTI)

The effect of ultrasound on the pseudo-solubility of nitrogen in water and on gas–liquid mass transfer kinetics has been investigated in an autoclave reactor equipped with a gas induced impeller. In order to use organic liquids and to investigate the effect of pressure, gas–liquid mass transfer coefficient was calculated from the evolution of autoclave pressure during gas absorption to avoid any side-effects of ultrasound on the concentrations measurements. Ultrasound effect on the apparent solubility is very low (below 12%). Conversely ultrasound greatly improves gas–liquid mass transfer, especially below gas induction speed, this improvement being boosted by pressure. In typical conditions of organic synthesis: 323 K, 1100 rpm, 10 bar, kL · a is multiplied by 11 with ultrasound (20 kHz/62.6 W). The impact of sonication is much higher on gassing out than on gassing in. In the same conditions, this enhancement is at least five times higher for degassing.

F. Laugier; C. Andriantsiferana; A.M. Wilhelm; H. Delmas

2008-01-01T23:59:59.000Z

173

Potassium Rankine cycle nuclear power systems for spacecraft and lunar-mass surface power  

SciTech Connect (OSTI)

The potassium Rankine cycle has high potential for application to nuclear power systems for spacecraft and surface power on the moon and Mars. A substantial effort on the development of Rankine cycle space power systems was carried out in the 1960`s. That effort is summarized and the status of the technology today is presented. Space power systems coupling Rankine cycle power conversion to both the SP-100 reactor and thermionic reactors as a combined power cycle are described in the paper.

Holcomb, R.S.

1992-07-01T23:59:59.000Z

174

Integrated Water Treatment System (IWTS) Process Flow Diagram Mass Balance Calculations for K West Basin  

SciTech Connect (OSTI)

The purpose of this calculation is to develop the rational for the material balances that are documented in the KW Basin water system Level 1 process flow diagrams.

REED, A.V.

2000-02-28T23:59:59.000Z

175

Mass Production Cost Estimation of Direct Hydrogen PEM Fuel Cell Systems for Transportation Applications: 2012 Update  

Broader source: Energy.gov [DOE]

This report is the sixth annual update of a comprehensive automotive fuel cell cost analysis conducted by Strategic Analysis under contract to the U.S. Department of Energy. This 2012 update will cover current status technology updates since the 2011 report, as well as introduce a 2012 bus system analysis considered alongside the automotive system.

176

Variation of the metal-insulator transition and formation of bipolarons by Cd doping in the thiospinel system Cu1-xCdxIr2S4  

Science Journals Connector (OSTI)

The pseudobinary thiospinel system Cu1-xCdxIr2S4 was investigated by the x-ray-diffraction, electrical resistivity, magnetic-susceptibility, and specific-heat measurements. It was shown that the system exhibits a miscibility-gap behavior for the Cd substitution, however, nearly monophasic samples were obtained by quenching at 1373 K, except for 0.4Cd concentration, the room-temperature electrical conductivity and Pauli susceptibility decrease monotonically, consistent with the hole-filling picture. The first-order metal-insulator transition at about 230 K in the parent compound CuIr2S4 is changed into a second-order transition around 185 K when x?0.25, whereafter the second-order transition disappears at x?0.8. No superconductivity was observed down to 1.8 K. The end-member compound CdIr2S4 is shown as an insulator with a band gap of 0.3 eV. Analysis for the data of magnetic susceptibility and electrical resistivity suggests the formation of bipolarons below 185 K for 0.25transition from the BCS Cooper pairs to small bipolarons.

Guanghan Cao; Hideaki Kitazawa; Takehiko Matsumoto; Chunmu Feng

2004-01-15T23:59:59.000Z

177

Ethylene mass flow measurements with an automatic CO2 laser long-path absorption system  

Science Journals Connector (OSTI)

A computer controlled CO2 laser long-path absorption system has been used in a field experiment to measure the total emission of ethylene from a petrochemical factory. The...

Persson, U; Johansson, J; Marthinsson, B; Eng, S T

1982-01-01T23:59:59.000Z

178

Mass transport corrected Tafel analysis for electrochemically reversible systems of complex stoichiometry  

Science Journals Connector (OSTI)

A general expression which allows Tafel analysis of electrochemically reversible systems of the form mA±e??nB at hydrodynamic electrodes such as the rotating disk or wall-tube is presented.

Oleksiy V. Klymenko; Richard G. Compton

2004-01-01T23:59:59.000Z

179

Application of numerical methods in solving problems of interrelated heat and mass transfer and transformation of structure in easily deformable natural systems  

Science Journals Connector (OSTI)

The article considers processes of heat and mass transfer with transformation of structure in easily deformable natural disperse systems. A numerical method is used to solve such problems. With this method as ...

V. A. Sychevskii

180

Variational calculations for the hydrogen-antihydrogen system with a mass-scaled Born-Oppenheimer potential  

E-Print Network [OSTI]

The problem of proton-antiproton motion in the ${\\rm H}$--${\\rm \\bar{H}}$ system is investigated by means of the variational method. We introduce a modified nuclear interaction through mass-scaling of the Born-Oppenheimer potential. This improved treatment of the interaction includes the nondivergent part of the otherwise divergent adiabatic correction and shows the correct threshold behavior. Using this potential we calculate the vibrational energy levels with angular momentum 0 and 1 and the corresponding nuclear wave functions, as well as the S-wave scattering length. We obtain a full set of all bound states together with a large number of discretized continuum states that might be utilized in variational four-body calculations. The results of our calculations gives an indication of resonance states in the hydrogen-antihydrogen system.

Henrik Stegeby; Konrad Piszczatowski; Hans O Karlsson; Roland Lindh; Piotr Froelich

2012-03-29T23:59:59.000Z

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


181

Theoretical description of the high-field susceptibility of magnetically ordered transition metal systems with applications to Fe, Co, Ni, and Fe1?xCox  

Science Journals Connector (OSTI)

A theoretical description of the high-field susceptibility of magnetically ordered transition metal systems is presented that is based on linear response theory formulated using the Green’s function technique. The approach allows to treat all spin and orbital contributions in a consistent way on the same footing. In contrast to previous work, the Landau susceptibility is included and spin-orbit induced contributions to the susceptibility are accessible by using a fully relativistic formulation. As an application of our approach, results obtained for the ferromagnetic transition metals Fe, Co, and Ni, as well as for the alloy system Fe1?xCox, are presented. These are discussed and compared to corresponding experimental data.

S. Mankovsky and H. Ebert

2006-08-15T23:59:59.000Z

182

Phase transitions and equation of state of CsI under high pressure and the development of a focusing system for x-rays  

SciTech Connect (OSTI)

The phase transitions and equation of state of ionic solid cesium iodide were studied under high pressure and room temperature in a diamond anvil cell. The studies were carried out using both energy dispersive and angular dispersive diffraction methods on synchrotron radiation sources over the pressure range from atmospheric pressure to over 300 gigapascals (3 million atmospheres). CsI undergoes a distinct phase transition at about 40 GPa, a pressure that is much lower than the reported insulator-metal transition at 110 GPa, from the atmospheric pressure B2(CsCl) structure to an orthorhombic structure. At higher pressures, a continuous distortion in the structure was observed with a final structure similar to a hcp lattice under ultra high pressure. No volume discontinuity was observed at the insulator-metal transition. The newly found transition sequence is different from the result of previous static compression studies. The current structure has a smaller unit cell volume than the previous assignment. This has resolved a long existing controversy among the previous static compression studies, the dynamic compression studies, and the theoretical studies. The current results also explain the apparent discrepancy between the present study and the previous static studies. We also present the development of a focusing system for high energy x-rays (> 12 keV) that is particularly suited for high pressure diffraction studies. This system uses a pair of multilayer coated spherical mirrors in a Kirkpatrick-Baez geometry. A focused beam size less than 10 micron in diameter can be readily achieved with sufficient intensity to perform diffraction studies. 93 refs., 46 figs., 15 tabs.

Wu, Yan.

1990-11-01T23:59:59.000Z

183

Proceedings of the 1996 NASA Conference on Mass Storage Systems, College Park, Maryland, September 1996.  

E-Print Network [OSTI]

satellites as part of its Mission to Planet Earth, more popularly known as EOSDIS (for Earth Observing System storage technology, the data almost certainly will be stored on tape. The latest tape technology offers media that is both very dense and reliable, as well as drives with transfer rates in the same range

Liblit, Ben

184

E-Print Network 3.0 - address transition costs Sample Search...  

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

EMPLOYEE TRANSIT PASS PROGRAM Summary: . Transportation Services will help cover the cost of a mass transit pass for full time employees. The employee... "RIDE FOR FIVE" PSU...

185

Mass-Transit Options Around Brandeis University  

E-Print Network [OSTI]

Area It is possible to get anywhere usinga combination of MBTA services, includingthe T, commuter rail, andbus lines (2010), Julia Marder (2010) Information & Images courtesyof: http://www.mbta.com http

Fraden, Seth

186

The metal–insulator transition: a perspective  

Science Journals Connector (OSTI)

...transition in condensed phases. Phys. Rev. B...M. J. 1982 The transition to the metallic...metalnon-metal transition in expanded metals...of electrons and ions in condensed matter...The metalnonmetal transition in disordered systems...1996c The changing phase of expanded metals...

1998-01-01T23:59:59.000Z

187

CONSTRAINING MASS RATIO AND EXTINCTION IN THE FU ORIONIS BINARY SYSTEM WITH INFRARED INTEGRAL FIELD SPECTROSCOPY  

SciTech Connect (OSTI)

We report low-resolution near-infrared spectroscopic observations of the eruptive star FU Orionis using the Integral Field Spectrograph (IFS) Project 1640 installed at the Palomar Hale telescope. This work focuses on elucidating the nature of the faint source, located 0.''5 south of FU Ori, and identified in 2003 as FU Ori S. We first use our observations in conjunction with published data to demonstrate that the two stars are indeed physically associated and form a true binary pair. We then proceed to extract J- and H-band spectro-photometry using the damped LOCI algorithm, a reduction method tailored for high contrast science with IFS. This is the first communication reporting the high accuracy of this technique, pioneered by the Project 1640 team, on a faint astronomical source. We use our low-resolution near-infrared spectrum in conjunction with 10.2 {mu}m interferometric data to constrain the infrared excess of FU Ori S. We then focus on estimating the bulk physical properties of FU Ori S. Our models lead to estimates of an object heavily reddened, A{sub V} = 8-12, with an effective temperature of {approx}4000-6500 K. Finally, we put these results in the context of the FU Ori N-S system and argue that our analysis provides evidence that FU Ori S might be the more massive component of this binary system.

Pueyo, Laurent [Johns Hopkins University, Department of Physics and Astronomy, 366 Bloomberg Center 3400 N. Charles Street, Baltimore, MD 21218 (United States); Hillenbrand, Lynne; Hinkley, Sasha; Dekany, Richard; Roberts, Jenny [Department of Astronomy, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Vasisht, Gautam; Roberts, Lewis C. Jr.; Shao, Mike; Burruss, Rick; Cady, Eric [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States); Oppenheimer, Ben R.; Brenner, Douglas; Zimmerman, Neil [American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024 (United States); Monnier, John D. [Department of Astronomy, University of Michigan, 941 Dennison Building, 500 Church Street, Ann Arbor, MI 48109-1090 (United States); Crepp, Justin [Department of Physics, 225 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556 (United States); Parry, Ian [University of Cambridge, Institute of Astronomy, Madingley Road, Cambridge, CB3, OHA (United Kingdom); Beichman, Charles [NASA Exoplanet Science Institute, 770 South Wilson Avenue, Pasadena, CA 91225 (United States); Soummer, Remi [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)

2012-09-20T23:59:59.000Z

188

Magnetic fields and chemical peculiarities of the very young intermediate-mass binary system HD 72106  

E-Print Network [OSTI]

The recently discovered magnetic Herbig Ae and Be stars may provide qualitatively new information about the formation and evolution of magnetic Ap and Bp stars. We have performed a detailed investigation of one particularly interesting binary system with a Herbig Ae secondary and a late B-type primary possessing a strong, globally ordered magnetic field. Twenty high-resolution Stokes V spectra of the system were obtained with the ESPaDOnS instrument mounted on the CFHT. In these observations we see clear evidence for a magnetic field in the primary, but no evidence for a magnetic field in the secondary. A detailed abundance analysis was performed for both stars, revealing strong chemical peculiarities in the primary and normal chemical abundances in the secondary. The primary is strongly overabundant in Si, Cr, and other iron-peak elements, as well as Nd, and underabundant in He. The primary therefore appears to be a very young Bp star. In this context, line profile variations of the primary suggest non-unifo...

Folsom, C P; Kochukhov, O; Alecian, E; Catala, C; Bagnulo, S; Böhm, T; Bouret, J -C; Donati, J -F; Grunhut, J; Hanes, D A; Landstreet, J D

2008-01-01T23:59:59.000Z

189

Alternative Fuels Data Center: Transportation System Efficiency  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Transportation System Transportation System Efficiency to someone by E-mail Share Alternative Fuels Data Center: Transportation System Efficiency on Facebook Tweet about Alternative Fuels Data Center: Transportation System Efficiency on Twitter Bookmark Alternative Fuels Data Center: Transportation System Efficiency on Google Bookmark Alternative Fuels Data Center: Transportation System Efficiency on Delicious Rank Alternative Fuels Data Center: Transportation System Efficiency on Digg Find More places to share Alternative Fuels Data Center: Transportation System Efficiency on AddThis.com... More in this section... Idle Reduction Parts & Equipment Maintenance Driving Behavior Fleet Rightsizing System Efficiency Ridesharing Mass Transit Active Transit Multi-Modal Transportation Telework

190

Comparison of 3D Classical Trajectory and Transition-State Theory Reaction Cross Sections  

DOE R&D Accomplishments [OSTI]

Although there is excellent agreement for a system such as H+H{sub 2} --> H{sub 2}+H, in which both the potential and the particle masses are symmetric, significant deviations occur for more asymmetric reactions. A detailed analysis show that the calculated differences are from the violation of two assumptions of transition-state theory.

Koeppl, G. W.; Karplus, Martin

1970-10-00T23:59:59.000Z

191

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Application  

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

presentation presentation does not contain any proprietary, confidential, or otherwise restricted information page 1 Overview * Base Period: - 100% complete * Manufacturing costs * Materials costs (particularly precious Timeline Barriers - Feb 17, 2006 to Feb. 16, 2008 * Option year 1 of 3: - 65% complete - Started Feb 16, 2008 metal catalysts) Characteristic Units 2008 2010 2015 Stack Cost $/kW e (net) - $25 $15 - $325K (2 year base period) - $182k (opt. yr. 1) - Contractor share: $0 * Funding for FY 2008 * Extensive interaction with Collaborations System Cost $/kW e (net) - $45 $30 * Funding for FY 2008 - $182k industry/researchers to solicit design & manufacturing metrics as input to cost analysis. page 2 Started Feb 16, 2008 Budget * Total project funding DOE Cost Targets

192

High resolution mass spectrometry method and system for analysis of whole proteins and other large molecules  

DOE Patents [OSTI]

A matrix assisted laser desorption/ionization (MALDI) method and related system for analyzing high molecular weight analytes includes the steps of providing at least one matrix-containing particle inside an ion trap, wherein at least one high molecular weight analyte molecule is provided within the matrix-containing particle, and MALDI on the high molecular weight particle while within the ion trap. A laser power used for ionization is sufficient to completely vaporize the particle and form at least one high molecular weight analyte ion, but is low enough to avoid fragmenting the high molecular weight analyte ion. The high molecular weight analyte ion is extracted out from the ion trap, and is then analyzed using a detector. The detector is preferably a pyrolyzing and ionizing detector.

Reilly, Peter T. A. (Knoxville, TN) [Knoxville, TN; Harris, William A. (Naperville, IL) [Naperville, IL

2010-03-02T23:59:59.000Z

193

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Applications: 2010 Update  

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

Mass Production Cost Estimation for Direct H 2 PEM Fuel Cell Systems for Automotive Applications: 2010 Update September 30, 2010 Prepared by: Brian D. James, Jeffrey A. Kalinoski & Kevin N. Baum One Virginia Square 3601 Wilson Boulevard, Suite 650 Arlington, Virginia 22201 703-243-3383 Prepared under: Subcontract No. AGB-0-40628-01 to the National Renewable Energy Laboratory (NREL) under Prime Contract No. DE-AC36-08GO28308 to the U.S. Department of Energy Foreword Energy security is fundamental to the mission of the U.S. Department of Energy (DOE) and hydrogen fuel cell vehicles have the potential to eliminate the need for oil in the transportation sector. Fuel cell vehicles can operate on hydrogen, which can be produced domestically, emitting less greenhouse gasses and pollutants than

194

Viscosity near phase transitions  

E-Print Network [OSTI]

Probably the most enticing observation in theoretical physics during the last decade was the discovery of the great amount of consequences obtained from the AdS/CFT conjecture put forward by Maldacena. In this work we review how this correspondence can be used to address hydrodynamic properties such as the viscosity of some strongly interacting systems. We also employ the Boltzmann equation for those systems closer to low-energy QCD, and argue that this kind of transport coefficients can be related to phase transitions, in particular the QGP/hadronic phase transition studied in heavy ion collisions.

Antonio Dobado; Felipe J. Llanes-Estrada; Juan M. Torres-Rincon

2010-09-30T23:59:59.000Z

195

Development of New Soft Ionization Mass Spectrometry Approaches for Spatial Imaging of Complex Chemical and Biological Systems  

E-Print Network [OSTI]

world's first C60 SIMS FT-ICR MS. Unique capabilities for imaging biological samples: High mass accuracy spatial resolution (~10 µm) High spatial and mass resolution C60 secondary ion mass spectrometry (SIMS of the colony Conducted first multimodal imaging of biological materials using nano-DESI, SIMS, and matrix

196

Alternative Fuels at AC Transit  

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

Alternative Fuels at AC Transit Alternative Fuels at AC Transit Speaker(s): Jaimie Levin Date: November 1, 2011 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Eve Edelson Mr. Levin will discuss AC Transit's range of environmental technology initiatives, including: zero emission fuel cell transit buses; state-of-the-art, high-capacity, hydrogen fueling stations; solar energy systems; and stationary solid oxide fuel cell power generators. AC Transit has the largest fleet of fuel cell buses in the United States, featuring fuel cell systems with more than 10,000 hours of continuous operation without any failures or power degradation. Their fuel cell fleet has logged more than 400,000 miles of service and carried in excess of one million passengers. Come hear what AC Transit has learned, where they're headed,

197

Circular One-Dimensional Model for the Electron-Ion System. II. First-Order Phase Transitions in the Random-Phase Approximation  

Science Journals Connector (OSTI)

This paper is the second in a series on a model of "electrons" and "ions" on a circle, with interaction Fourier coefficients 1n2 (n integer). In this sequel to the random-phase-approximation (RPA) analysis of paper I, we show that the model undergoes, in the RPA, a first-order phase transition. This is shown by calculating the free energy F from the partition function and demonstrating that F is unstable with respect to the formation of a second phase. In the mechanism of the phase transition, it is crucial that quantum theory ascribes discrete energy levels to the collective (plasma) degrees of freedom, which are unexcited or "frozen out" if the thermal energy is small with respect to the spacing of these discrete levels, and whose number s furthermore depends on the temperature and density. Thus one obtains a system with an effective number of degrees of freedom, N-s, which increases as the temperature increases or the density decreases. This is taken heuristically as the feature underlying the possibility for the transition.

Gideon Carmi

1968-12-10T23:59:59.000Z

198

ROTATION AND OUTFLOW MOTIONS IN THE VERY LOW-MASS CLASS 0 PROTOSTELLAR SYSTEM HH 211 AT SUBARCSECOND RESOLUTION  

SciTech Connect (OSTI)

HH 211 is a nearby young protostellar system with a highly collimated jet. We have mapped it in 352 GHz continuum, SiO (J = 8 - 7), and HCO{sup +} (J = 4 - 3) emission at up to {approx}0.''2 resolution with the Submillimeter Array (SMA). The continuum source is now resolved into two sources, SMM1 and SMM2, with a separation of {approx} 84 AU. SMM1 is seen at the center of the jet, probably tracing a (inner) dusty disk around the protostar driving the jet. SMM2 is seen to the southwest of SMM1 and may trace an envelope-disk around a small binary companion. A flattened envelope-disk is seen in HCO{sup +} around SMM1 with a radius of {approx} 80 AU perpendicular to the jet axis. Its velocity structure is consistent with a rotation motion and can be fitted with a Keplerian law that yields a mass of {approx}50 {+-} 15 M {sub Jup} (a mass of a brown dwarf) for the protostar. Thus, the protostar could be the lowest mass source known to have a collimated jet and a rotating flattened envelope-disk. A small-scale ({approx}200 AU) low-speed ({approx}2 km s{sup -1}) outflow is seen in HCO{sup +} around the jet axis extending from the envelope-disk. It seems to rotate in the same direction as the envelope-disk and may carry away part of the angular momentum from the envelope-disk. The jet is seen in SiO close to {approx}100 AU from SMM1. It is seen with a 'C-shaped' bending. It has a transverse width of {approx}< 40 AU and a velocity of {approx} 170 {+-} 60 km s{sup -1}. A possible velocity gradient is seen consistently across its innermost pair of knots, {approx}0.5 km s{sup -1} at {approx}10 AU, consistent with the sense of rotation of the envelope-disk. If this gradient is an upper limit of the true rotational gradient of the jet, then the jet carries away a very small amount of angular momentum of {approx}< 5 AU km s{sup -1} and thus must be launched from the very inner edge of the disk near the corotation radius.

Lee, C.-F.; Hirano, Naomi; Ho, Paul T. P.; Shang, Hsien [Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 106, Taiwan (China); Palau, Aina [Laboratorio de Astrofisica Estelar y Exoplanetas, Centro de Astrobiologia (INTA-CSIC), LAEFF Campus, P.O. Box 78, E-28691 Villanueva de la Canada (Madrid) (Spain); Bourke, Tyler L.; Zhang Qizhou [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)], E-mail: cflee@asiaa.sinica.edu.tw

2009-07-10T23:59:59.000Z

199

On emergent complex behaviour, self-organised criticality and phase transitions in multi-agent systems: autonomy oriented computing (AOC) perspectives  

Science Journals Connector (OSTI)

In a Multi-Agent System (MAS), there usually exist system-level goals that agents are collectively trying to attain. Generally speaking, the local behaviours and performances of individual agents directly determine which global characteristics of an MAS, for example, the global performance and/or patterns, will emerge and how the system-level goals will be attained. In most cases, such a localâ??global relationship is neither obvious nor straightforward. In this paper, we will address several issues on modelling emergent complex behaviours in MAS. In particular, we will focus on the localâ??global relationship in a Self-Organising MAS (SOMAS), and discuss the phenomena of Self-Organised Criticality (SOC) and phase transition in SOMAS.

Jiming Liu; Bingcheng Hu

2008-01-01T23:59:59.000Z

200

Mass algal culture system  

DOE Patents [OSTI]

An apparatus and process for the culture of algae in a liquid medium is disclosed. The medium circulates through an open trough and is exposed to an atmosphere which is temperature regulated. The nutrient content of the liquid medium is regulated to control the chemical composition growth and reproduction characteristics of the cultured algae. Before it is allowed to strike the medium, sunlight is passed through a filter to remove wavelengths which are not photosynthetically active. Heat energy can be recovered from the filter.

Raymond, Lawrence P. (Richland, WA)

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

Mass algal culture system  

DOE Patents [OSTI]

An apparatus and process for the culture of algae in a liquid medium is disclosed. The medium circulates through an open trough and is exposed to an atmosphere which is temperature regulated. The nutrient content of the liquid medium is regulated to control the chemical composition growth and reproduction characteristics of the cultured algae. Before it is allowed to strike the medium, sunlight is passed through a filter to remove wavelengths which are not photosynthetically active. Heat energy can be recovered from the filter.

Raymond, Lawrence P. (Richland, WA)

1982-01-01T23:59:59.000Z

202

A tight-binding potential for atomistic simulations of carbon interacting with transition metals: Application to the Ni-C system  

E-Print Network [OSTI]

for transition metals, carbon, and transition metal carbides, which has been optimized through a systematicA tight-binding potential for atomistic simulations of carbon interacting with transition metals of the transition metal, is used to obtain a transferable tight-binding model of the carbon-carbon, metal-metal

Paris-Sud XI, Université de

203

Predicting the Yields of Photometric Surveys for Transiting Planets  

E-Print Network [OSTI]

Observing extrasolar planetary transits is one of the only ways that we may infer the masses and radii of planets outside the Solar System. As such, the detections made by photometric transit surveys are one of the only foreseeable ways that the areas of planetary interiors, system dynamics, migration, and formation will acquire more data. Predicting the yields of these surveys therefore serves as a useful statistical tool. Predictions allows us to check the efficiency of transit surveys (``are we detecting all that we should?'') and to test our understanding of the relevant astrophysics (``what parameters affect predictions?''). Furthermore, just the raw numbers of how many planets will be detected by a survey can be interesting in its own right. Here, we look at two different approaches to modeling predictions (forward and backward), and examine three different transit surveys (TrES, XO, and Kepler). In all cases, making predictions provides valuable insight into both extrasolar planets and the surveys themselves, but this must be tempered by an appreciation of the uncertainties in the statistical cut-offs used by the transit surveys.

Thomas G. Beatty

2008-07-01T23:59:59.000Z

204

Energy Transition Initiative: Islands Playbook  

Office of Energy Efficiency and Renewable Energy (EERE)

The Island Energy Playbook provides an action-oriented guide to successfully initiating, planning, and completing a transition to an energy system that primarily relies on local resources to eliminate a dependence on one or two imported fuels. It is intended to serve as a readily available framework that any community can adapt to organize its own energy transition effort.

205

Subcritical Fluctuations at the Electroweak Phase Transition  

E-Print Network [OSTI]

We study the importance of thermal fluctuations during the electroweak phase transition. We evaluate in detail the equilibrium number density of large amplitude subcritical fluctuations and discuss the importance of phase mixing to the dynamics of the phase transition. Our results show that, for realistic Higgs masses, the phase transition can be completed by the percolation of the true vacuum, induced by the presence of subcritical fluctuations.

Rudnei O. Ramos

1996-07-24T23:59:59.000Z

206

TRANSITION DE MOTT METAL-INSULATOR TRANSITIONS  

E-Print Network [OSTI]

predominantly non-trivalent ions favor the metallicstate. I. Introduction. -Transition metal oxides form a class that such a transition would be dis- continuous as a function of volume [8], and he later proposed a phase diagramTRANSITION DE MOTT METAL-INSULATOR TRANSITIONS IN TRANSITION METAL OXIDES by D. B. McWHAN, A. MENTH

Paris-Sud XI, Université de

207

Molecular dynamics beyonds the limits: massive scaling on 72 racks of a BlueGene/P and supercooled glass transition of a 1 billion particles system  

E-Print Network [OSTI]

We report scaling results on the world's largest supercomputer of our recently developed Billions-Body Molecular Dynamics (BBMD) package, which was especially designed for massively parallel simulations of the atomic dynamics in structural glasses and amorphous materials. The code was able to scale up to 72 racks of an IBM BlueGene/P, with a measured 89% efficiency for a system with 100 billion particles. The code speed, with less than 0.14 seconds per iteration in the case of 1 billion particles, paves the way to the study of billion-body structural glasses with a resolution increase of two orders of magnitude with respect to the largest simulation ever reported. We demonstrate the effectiveness of our code by studying the liquid-glass transition of an exceptionally large system made by a binary mixture of 1 billion particles.

Allsopp, N; Fratalocchi, A

2011-01-01T23:59:59.000Z

208

Can xenon in water inhibit ice growth? Molecular dynamics of phase transitions in water$-$Xe system  

E-Print Network [OSTI]

Motivated by recent experiments showing the promise of noble gases as cryoprotectants, we perform molecular dynamics modeling of phase transitions in water with xenon under cooling. We study the structure and dynamics of xenon water solution as a function of temperature. Homogeneous nucleation of clathrate hydrate phase is observed and characterized. As the temperature is further reduced we observe hints of dissociation of clathrate due to stronger hydrophobic hydration, pointing towards a possible instability of clathrate at cryogenic temperatures and conversion to an amorphous phase comprised of "xenon + hydration shell" Xe$\\cdot$(H$_{2}$O)$_{21.5}$ clusters. Simulations of ice$-$xenon solution interface in equilibrium and during ice growth reveal the effects of xenon on the ice$-$liquid interface, where adsorbed xenon causes roughening of ice surface but does not preferentially form clathrate. These results provide evidence against the ice-blocker mechanism of xenon cryoprotection.

Vasilii I. Artyukhov; Alexander Yu. Pulver; Alex Peregudov; Igor Artyuhov

2014-07-11T23:59:59.000Z

209

Do X-ray Binary Spectral State Transition Luminosities Vary?  

E-Print Network [OSTI]

We tabulate the luminosities of the soft-to-hard state transitions of all X-ray binaries for which there exist good X-ray flux measurements at the time of the transition, good distance estimates, and good mass estimates for the compact star. We show that the state transition luminosities are at about 1-4% of the Eddington rate, markedly smaller than those typically quoted in the literature, with a mean value of 2%. Only the black hole candidate GRO J~1655-40 and the neutron star systems Aql X-1 and 4U 1728-34 have measured state transition luminosities inconsistent with this value at the 1$\\sigma$ level. GRO J~1655-40, in particular, shows a state transition luminosity below the mean value for the other sources at the $4\\sigma$ level. This result, combined with the known inner disk inclination angle (the disk is nearly parallel to the line of sight) from GRO J~1655-40's relativistic jets suggest that the hard X-ray emitting region in GRO J~1655-40 can have a velocity of no more than about $\\beta=0.68$, with a most likely value of about $\\beta=0.52$, and a minimum speed of $\\beta=0.45$, assuming that the variations in state transition luminosities are solely due to relativistic beaming effects. The variance in the state transition luminosities suggests an emission region with a velocity of $\\sim0.2c$. The results are discussed in terms of different emission models for the low/hard state. We also discuss the implications for measuring the dimensionless viscosity parameter $\\alpha$. We also find that if its state transitions occur at typical luminosities, then GX 339-4 is likely to be at a distance of at least 7.6 kpc, much further than typically quoted estimates.

Thomas J. Maccarone

2003-08-02T23:59:59.000Z

210

Quantum Phase Transitions in a Linear Ion Trap  

E-Print Network [OSTI]

We show that the quantum phase transition of the Tavis-Cummings model can be realised in a linear ion trap of the kind proposed for quantum computation. The Tavis-Cummings model describes the interaction between a bosonic degree of freedom and a collective spin. In an ion trap, the collective spin system is a symmetrised state of the internal electronic states of N ions, while the bosonic system is the vibrational degree of freedom of the centre of mass mode for the ions.

G. J. Milburn; Paul Alsing

2000-03-01T23:59:59.000Z

211

Alameda-Contra Costa Transit District (AC Transit) Fuel Cell...  

Energy Savers [EERE]

(AC Transit) Fuel Cell Transit Buses: Preliminary Evaluation Results Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Preliminary Evaluation Results This...

212

Mass Production Cost Estimation of Direct H2 PEM Fuel Cell Systems for Transportation Applications: 2013 Update  

Broader source: Energy.gov [DOE]

This report is the seventh annual update of a comprehensive automotive fuel cell cost analysis conducted by Strategic Analysis under contract to the U.S. Department of Energy. The 2013 update covers fuel cell cost analysis of both light duty vehicle (automotive) and transit bus applications for only the current year (i.e., 2013).

213

High-energy irradiation and mass loss rates of hot Jupiters in the solar neighborhood  

E-Print Network [OSTI]

Giant gas planets in close proximity to their host stars experience strong irradiation. In extreme cases photoevaporation causes a transonic, planetary wind and the persistent mass loss can possibly affect the planetary evolution. We have identified nine hot Jupiter systems in the vicinity of the Sun, in which expanded planetary atmospheres should be detectable through Lyman alpha transit spectroscopy according to predictions. We use X-ray observations with Chandra and XMM-Newton of seven of these targets to derive the high-energy irradiation level of the planetary atmospheres and the resulting mass loss rates. We further derive improved Lyman alpha luminosity estimates for the host stars including interstellar absorption. According to our estimates WASP-80 b, WASP-77 b, and WASP-43 b experience the strongest mass loss rates, exceeding the mass loss rate of HD 209458 b, where an expanded atmosphere has been confirmed. Furthermore, seven out of nine targets might be amenable to Lyman alpha transit spectroscopy...

Salz, M; Czesla, S; Schmitt, J H M M

2015-01-01T23:59:59.000Z

214

Density of defects and the scaling law of the entanglement entropy in quantum phase transition of one-dimensional spin systems induced by a quench  

SciTech Connect (OSTI)

We have studied quantum phase transition induced by a quench in different one-dimensional spin systems. Our analysis is based on the dynamical mechanism which envisages nonadiabaticity in the vicinity of the critical point. This causes spin fluctuation which leads to the random fluctuation of the Berry phase factor acquired by a spin state when the ground state of the system evolves in a closed path. The two-point correlation of this phase factor is associated with the probability of the formation of defects. In this framework, we have estimated the density of defects produced in several one-dimensional spin chains. At the critical region, the entanglement entropy of a block of L spins with the rest of the system is also estimated which is found to increase logarithmically with L. The dependence on the quench time puts a constraint on the block size L. It is also pointed out that the Lipkin-Meshkov-Glick model in point-splitting regularized form appears as a combination of the XXX model and Ising model with magnetic field in the negative z axis. This unveils the underlying conformal symmetry at criticality which is lost in the sharp point limit. Our analysis shows that the density of defects as well as the scaling behavior of the entanglement entropy follows a universal behavior in all these systems.

Basu, Banasri; Bandyopadhyay, Pratul; Majumdar, Priyadarshi [Physics and Applied Mathematics Unit, Indian Statistical Institute, Kolkata 700 108 (India); Jyotinagar Bidyasree Niketan H.S. School, 41 Jyotinagar, Kolkata 700 108 (India)

2011-03-15T23:59:59.000Z

215

SCATTERING BEHAVIOR OF TRANSITIONAL SHOCK WAVES  

E-Print Network [OSTI]

SCATTERING BEHAVIOR OF TRANSITIONAL SHOCK WAVES Kevin R. Zumbrun Bradley J. Plohr Dan Marchesin September, 1991 Abstract. We study the stability and asymptotic behavior of transitional shock waves as solutions of a parabolic system of conservation laws. In contrast to classical shock waves, transitional

New York at Stoney Brook, State University of

216

Transition dynamics between the multiple steady states in natural ventilation systems : from theories to applications in optimal controls  

E-Print Network [OSTI]

In this study, we investigated the multiple steady state behavior, an important observation in numerical and experimental studies in natural ventilation systems. The-oretical models are developed and their applications in ...

Yuan, Jinchao

2007-01-01T23:59:59.000Z

217

Blue Dots Team Transits Working Group Review  

E-Print Network [OSTI]

Transiting planet systems offer an unique opportunity to observationally constrain proposed models of the interiors (radius, composition) and atmospheres (chemistry, dynamics) of extrasolar planets. The spectacular successes of ground-based transit surveys (more than 60 transiting systems known to-date) and the host of multi-wavelength, spectro-photometric follow-up studies, carried out in particular by HST and Spitzer, have paved the way to the next generation of transit search projects, which are currently ongoing (CoRoT, Kepler), or planned. The possibility of detecting and characterizing transiting Earth-sized planets in the habitable zone of their parent stars appears tantalizingly close. In this contribution we briefly review the power of the transit technique for characterization of extrasolar planets, summarize the state of the art of both ground-based and space-borne transit search programs, and illustrate how the science of planetary transits fits within the Blue Dots perspective.

Sozzetti, A; Alonso, R; Blank, D L; Catala, C; Deeg, H; Grenfell, J L; Hellier, C; Latham, D W; Minniti, D; Pont, F; Rauer, H

2009-01-01T23:59:59.000Z

218

THE TRANSIT LIGHT CURVE PROJECT. XIII. SIXTEEN TRANSITS OF THE SUPER-EARTH GJ 1214b  

E-Print Network [OSTI]

We present optical photometry of 16 transits of the super-Earth GJ 1214b, allowing us to refine the system parameters and search for additional planets via transit timing. Starspot-crossing events are detected in two light ...

Carter, Joshua Adam

219

Patient and provider perspectives on quality and health system effectiveness in a transition economy: Evidence from Ukraine  

Science Journals Connector (OSTI)

Abstract Facing a severe population health crisis due to noncommunicable diseases, Ukraine and other former Soviet republics and Eastern European countries have a pressing need for more effective health systems. Policies to enhance health system effectiveness should consider the perspectives of different stakeholder groups, including providers as well as patients. In addition, policies that directly target the quality of clinical care should be based on objective performance measures. In 2009 and 2010 we conducted a coordinated series of household and facility-level surveys to capture the perspectives of Ukrainian household members, outpatient clinic patients, and physicians regarding the country's health system overall, as well as the quality, access, and affordability of health care. We objectively measured the quality of care for heart failure and chronic obstructive pulmonary disease using CPV® vignettes. There was broad agreement among household respondents (79%) and physicians (95%) that Ukraine's health system should be reformed. CPV® results indicate that the quality of care for common noncommunicable diseases is poor in all regions of the country and in hospitals as well as polyclinics. However, perspectives about the quality of care differ, with household respondents seeing quality as a serious concern, clinic patients having more positive perceptions, and physicians not viewing quality as a reform priority. All stakeholder groups viewed affordability as a problem. These findings have several implications for policies to enhance health system effectiveness. The shared desire for health system reform among all stakeholder groups provides a basis for action in Ukraine. Improving quality, strengthening primary care, and enhancing affordability should be major goals of new health policies. Policies to improve quality directly, such as pay-for-performance, would be mutually reinforcing with purchasing reforms such as transparent payment mechanisms. Such policies would align the incentives of physicians with the desires of the population they serve.

J. Luck; J.W. Peabody; L.M. DeMaria; C.S. Alvarado; R. Menon

2014-01-01T23:59:59.000Z

220

OZI violating eight-quark interactions as a thermometer for chiral transitions  

E-Print Network [OSTI]

This work is a follow-up of our recent observation that in the SU(3) flavor limit with vanishing current quark masses the temperature for the chiral transition is substantially reduced by adding eight-quark interactions to the Nambu - Jona-Lasinio Lagrangian with U_A(1) breaking. Here we generalize the case to realistic light and strange quark masses and confirm our prior result. Additionally, we demonstrate that depending on the strength of OZI violating eight-quark interactions, the system undergoes either a rapid crossover or a first order phase transition. The meson mass spectra of the low lying pseudoscalars and scalars at T=0 are not sensitive to the difference in the parameter settings that correspond to these two alternatives, except for the singlet-octet mixing scalar channels, mainly the sigma meson.

A. A. Osipov; B. Hiller; J. Moreira; A. H. Blin

2007-09-21T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

GPS-based slope monitoring systems and their applications in transition mining from open-pit to underground  

Science Journals Connector (OSTI)

Combining methods of open-pit and underground mining can yield maximum economic outcomes, while they may also cause large-scaled geological hazards, such as landslides. Failure to prevent landslides in mining areas could result in losses and damages to equipment, surrounding environments, and even human lives. In this paper, we report the application of global positioning system (GPS) for monitoring the Anjialing Coal Mine, the first mine in China that employs the combining methods of open-pit and underground mining. Mine slopes with different inclined angles were monitored and precise data of ground movements were obtained. Mathematic modelling of the subsidence rate over time has successfully detected the occurrence of terminal subsidence rate and a corresponding a landslide. The equipment and persons involved were evacuated and kept safe before the medium landslide occurred. In conclusion, the GPS monitoring system is proved to be effective in mitigating the geological hazards in mining areas.

Gang Chen; Xingwen Cheng; Weitao Chen; Xianju Li; Liangbiao Chen

2014-01-01T23:59:59.000Z

222

Quantum phase transitions in the interacting boson model  

E-Print Network [OSTI]

This review is focused on various properties of quantum phase transitions (QPTs) in the Interacting Boson Model (IBM) of nuclear structure. The model in its infinite-size limit exhibits shape-phase transitions between spherical, deformed prolate, and deformed oblate forms of the ground state. Finite-size precursors of such behavior are verified by robust variations of nuclear properties (nuclear masses, excitation energies, transition probabilities for low lying levels) across the chart of nuclides. Simultaneously, the model serves as a theoretical laboratory for studying diverse general features of QPTs in interacting many-body systems, which differ in many respects from lattice models of solid-state physics. We outline the most important fields of the present interest: (a) The coexistence of first- and second-order phase transitions supports studies related to the microscopic origin of the QPT phenomena. (b) The competing quantum phases are characterized by specific dynamical symmetries and novel symmetry related approaches are developed to describe also the transitional dynamical domains. (c) In some parameter regions, the QPT-like behavior can be ascribed also to individual excited states, which is linked to the thermodynamic and classical descriptions of the system. (d) The model and its phase structure can be extended in many directions: by separating proton and neutron excitations, considering odd-fermion degrees of freedom or different particle-hole configurations, by including other types of bosons, higher order interactions, and by imposing external rotation. All these aspects of IBM phase transitions are relevant in the interpretation of experimental data and important for a fundamental understanding of the QPT phenomenon.

Pavel Cejnar; Jan Jolie

2008-07-22T23:59:59.000Z

223

Spectral diffusion of molecular electronic transitions in amorphous solids: Weak and strong two-level-system phonon coupling  

SciTech Connect (OSTI)

The two-level-system (TLS) model of glasses is used with nonphenomenological TLS distribution functions [R. Jankowiak [ital et] [ital al]., J. Phys. Chem. 90, 3896 (1986)] to account for the time-dependent spectral-diffusion data for cresyl violet and zinc porphin in ethanol glasses at low temperatures [K. A. Littau and M. D. Fayer, Chem. Phys. Lett. 176, 551 (1991); H. C. Meijers and D. A. Wiersma, Phys. Rev. Lett. 68, 381 (1992)]. The two distributions of faster and slower TLS relaxation rates required to fit the data are characterized for both weak and strong TLS-phonon coupling. Comparison of the values obtained for the TLS parameters with those determined earlier for specific heat, thermal conductivity, pure dephasing, and spontaneous filling of nonphotochemical holes establishes that the faster and slower distributions are associated with intrinsic and extrinsic TLS. The pronounced effects of strong coupling on the TLS relaxation-rate distributions are discussed.

Jankowiak, R.; Small, G.J. (Department of Chemistry and Ames Laboratory, Iowa State University, Ames, Iowa 50011 (United States))

1993-06-01T23:59:59.000Z

224

Coil-bridge transition and Monte Carlo simulation of a stretched polymer  

Science Journals Connector (OSTI)

The structure of the system consisting of a grafted self-avoiding polymer chain attracted to the surface layer of a flat wall at a distance away by a short-ranged force is investigated. A first-order transition is determined between the coil state at a low attraction energy and the bridge state at a high attraction energy. The transition properties of the system are obtained by a Monte Carlo simulation, which uses the inverse density of states as the transition weight and is reweighted back to a canonical ensemble. The determination of the density of states follows a revised Wang-Landau procedure in which the center-of-mass distance from the grafted site is used as the variable. Scaling arguments are also given for the observed numerical results.

Jeff Z. Y. Chen

2011-10-25T23:59:59.000Z

225

FE Transition Deliverables  

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

Transition Deliverables Transition Deliverables To: Cynthia Quarterman From: Charles Roy, FE-3 Date: 12/04/08 Re: On 12/03/08 Cynthia Quarterman requested a list of major projects with quick starts and job creation from Vic Der. Attached is a hard copy of this document. An electronic version of this document will be submitted to Cynthia Quarterman through the Office of Management. If there are any questions, please contact Charles Roy at 202-586-8977. ,^ (^// Cc~y Major Projects with Quick Starts & Jobs Creation Office of Clean Coal Summary of Projects and Job Creation The following table outlines the near-term possibilities for projects that capture and sequester carbon from coal-based systems. The potential jobs associated with these activities are listed along with likely construction and operation dates. Since the funding

226

Policy Shifts toward an Energy System Transition: The Dynamics of Advocacy Coalitions and New York State’s Renewable Portfolio Standard.  

E-Print Network [OSTI]

??Using the New York State Renewable Portfolio Standard (RPS) policy process as a case study, this paper combines two existing policy theories, Transition Management and… (more)

Rubenstein, M.

2012-01-01T23:59:59.000Z

227

A MODULAR STEADY STATE GLOW DISCHARGE QUADRUPOLE MASS SPECTROMETER SYSTEM FOR THE AT-LINE ANALYSIS OF PLUTONIUM METAL  

SciTech Connect (OSTI)

Historically, glow discharge mass and optical spectrometric techniques have been used in industry for the characterization of processed metals, such as steels and other alloys. This technique is especially well suited for this type of product analysis because the glow discharge ionization source accommodates solid conducting samples with minimal or no sample preparation. This characteristic along with minimal matrix effect considerations makes the glow discharge source well suited for these types of applications.

R. STEINER; D. WAYNE

1998-12-01T23:59:59.000Z

228

Active-to-Passive Environmental Cleanup Transition Strategies - 13220  

SciTech Connect (OSTI)

The Savannah River Site uses a graded approach to environmental cleanup. The selection of groundwater and vadose zone remediation technologies for a specific contamination area is based on the size, contaminant type, contaminant concentration, and configuration of the plume. These attributes are the result of the nature and mass of the source of contamination and the subsurface characteristics in the area of the plume. Many large plumes consist of several zones that are most efficiently addressed with separate complementary corrective action/remedial technologies. The highest concentrations of contaminants are found in the source zone. The most robust, high mass removal technologies are often best suited for remediation of the source zone. In the primary plume zone, active remedies, such as pump-and-treat, may be necessary to remove contaminants and exert hydraulic control of the plume. In the dilute fringe zone, contaminants are generally lower in concentration and can often be treated with passive techniques. A key determination in achieving an acceptable and cost-effective end state for a given waste unit is when to transition from an active treatment system to a more passive or natural approach (e.g., monitored natural attenuation or enhanced attenuation). This paper will discuss the considerations for such a transition as well as provide examples of successful transitions at the Savannah River Site. (authors)

Gaughan, Thomas F. [Savannah River Nuclear Solutions, Savannah River Site, Aiken, SC 29808 (United States)] [Savannah River Nuclear Solutions, Savannah River Site, Aiken, SC 29808 (United States); Aylward, Robert S.; Denham, Miles E.; Looney, Brian B. [Savannah River National Laboratory, Savannah River Site, Aiken, SC 29808 (United States)] [Savannah River National Laboratory, Savannah River Site, Aiken, SC 29808 (United States); Whitaker, Wade C. [Department of Energy - Savannah River, Savannah River Site, Aiken, SC 29808 (United States)] [Department of Energy - Savannah River, Savannah River Site, Aiken, SC 29808 (United States); Mills, Gary L. [Savannah River Ecology Laboratory, Savannah River Site, Aiken, SC 29808 (United States)] [Savannah River Ecology Laboratory, Savannah River Site, Aiken, SC 29808 (United States)

2013-07-01T23:59:59.000Z

229

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Applications: 2008 Update  

Fuel Cell Technologies Publication and Product Library (EERE)

This report estimates fuel cell system cost for systems produced in the years 2006, 2010, and 2015, and is the second annual update of a comprehensive automotive fuel cell cost analysis.

230

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Applications: 2008 Update  

Broader source: Energy.gov [DOE]

Report estimates fuel cell system cost for systems produced in the years 2006, 2010, and 2015, and is the second annual update of a comprehensive automotive fuel cell cost analysis.

231

Mass Production Cost Estimation for Direct H2 PEM Fuel Cell Systems for Automotive Applications: 2007 Update  

Fuel Cell Technologies Publication and Product Library (EERE)

This report estimates fuel cell system cost for systems produced in the years 2007, 2010, and 2015, and is the first annual update of a comprehensive automotive fuel cell cost analysis.

232

Survey on mass determination with oscillating systems: Part II. Instruments and weighing of matter from gaseous environment  

Science Journals Connector (OSTI)

Examples of available instruments based on oscillating systems are discussed including quartz crystals, vibrating strings, ribbons and other bodies.

T. Brokate; Th. Gast; E. Robens; Z. Ali

2003-01-01T23:59:59.000Z

233

Non-Integer Quantum Transitions  

E-Print Network [OSTI]

We show that in the quantum transition of a system induced by the interaction with an intense laser of circular frequency $\\omega$, the energy difference between the initial and the final states of the system is not necessarily being an integer multiple of the quantum energy $\\hbar\\omega$.

Qi-Ren Zhang

2005-12-04T23:59:59.000Z

234

Fact #554: January 19, 2009 Energy Intensity of Light Rail Transit...  

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

4: January 19, 2009 Energy Intensity of Light Rail Transit Systems Fact 554: January 19, 2009 Energy Intensity of Light Rail Transit Systems According to the 2007 National Transit...

235

The Leo Archipelago: A System of Earth-Rings for Communications, Mass-Transport to Space, Solar Power, and Control of Global Warming  

E-Print Network [OSTI]

A multi-purpose low-earth-orbit system of rings circling the earth - the "LEO ARCHIPELAGO" - is proposed as a means of solving or bypassing many major problems hindering man's quest to get into space. A fiber-optic ring about the earth would be an initial testing and developmental stage for the ring systems, while providing cash-flow through a LEO-based, high-band-width, world-wide communication system. A Low-Earth-Orbit-based space-elevator system, "Sling-on-a-Ring," is proposed as the crucial developmental stage of the LEO Archipelago. Being a LEO-based heavy-mass lifter, rather than earth- or GEO-based, it is much less massive and therefore less costly than other proposed space-elevators. With the advent of lower-cost, higher-mass transport to orbit, the options for further space development (e.g., communications, space solar power, radiation dampers, sun shades, and permanent LEO habitation) are greatly expanded. This paper provides an update of the Sling-on-a-Ring concept in terms of new materials, poten...

Meulenberg, Andrew

2010-01-01T23:59:59.000Z

236

Transit Rider Information King County Metro Transit  

E-Print Network [OSTI]

Transit Rider Information King County Metro Transit Rider Information (206) 553-3000 http the On the Move Blog http://www.seattle.gov/transportation King County Road Services Division Road Maintenance closely with King County Metro Transit, the Seattle School District, local universities, hospitals

Queitsch, Christine

237

Nonisothermal Multifluid Transition to Equilibrium  

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

Nonisothermal Multifluid Transition to Equilibrium Nonisothermal Multifluid Transition to Equilibrium Processes of interest to the simulation of CH 4 production from gas hydrates in porous media include multifluid flow and heat transport along with complex phase transitions, including hydrate dissociation and formation. Before executing problems with the additional complexities involved with the gas hydrate phase, a base case problem has been designed to examine the numerical simulation of multifluid flow and heat transport processes with a single phase transition from aqueous saturated to unsaturated conditions for a water-CH 4 system outside the stability region for gas hydrate formation. The problem involves a horizontal one-dimensional closed domain (no flow boundary conditions), initialized with gradients in aqueous pressure, gas

238

The mass  

Science Journals Connector (OSTI)

The mass of the charged Higgs boson at the 1-loop level is investigated, assuming the CP symmetry to be violated explicitly in the Higgs sector of the minimal supersymmetric standard model (MSSM). It is found that there is a parameter region of the MSSM where the presence of explicit CP violation in the Higgs sector yields negative radiative corrections to the charged Higgs boson mass. Thus, the charged Higgs boson in the MSSM may have as low a mass as 60 GeV at the 1-loop level, if the CP symmetry is violated. This lower bound may be improved by the Higgs search at LEP2, which imposes experimental constraints on the charged Higgs mass, as well as on the masses of the neutral Higgs bosons. Hence, LEP2 can constrain experimentally the charged Higgs mass to be not smaller than 109 GeV under our assumption. In addition, it sets 75 GeV as the lower bound on the mass of the lightest neutral Higgs boson, and 84 GeV for that of the next-to-lightest neutral Higgs boson.

Seung Woo Ham; Sun Kun Oh; Eun Jong Yoo; Hyun Kyu Lee

2001-01-01T23:59:59.000Z

239

Use of the ECL-CAMAC trigger processor system for recoil missing mass triggers at the Tagged Photon Spectrometer at Fermilab  

SciTech Connect (OSTI)

A trigger processor in operation since May 1980 at the Tagged Photon Spectrometer at Fermilab will be described. The processor, based on the Fermilab ECL-CAMAC system, allows fast selection of high mass diffractive events from the total hadronic cross section. Data from a recoil detector, consisting of 3 wire chambers and 4 layers of scintillator concentric about a 1.5 m liquid hydrogen target, is digitized and presented to the processor within 3 sec. From the chamber data are found the vertices and angles of all recoiling tracks.

Martin, J.; Bracker, S.; Hartner, G.; Appel, J.; Nash, T.

1981-05-01T23:59:59.000Z

240

Hysteretic transitions in the Kuramoto model with inertia  

E-Print Network [OSTI]

We report finite size numerical investigations and mean field analysis of a Kuramoto model with inertia for fully coupled and diluted systems. In particular, we examine for a Gaussian distribution of the frequencies the transition from incoherence to coherence for increasingly large system size and inertia. For sufficiently large inertia the transition is hysteretic and within the hysteretic region clusters of locked oscillators of various sizes and different levels of synchronization coexist. A modification of the mean field theory developed by Tanaka, Lichtenberg, and Oishi [Physica D, 100 (1997) 279] allows to derive the synchronization profile associated to each of these clusters. We have also investigated numerically the limits of existence of the coherent and of the incoherent solutions. The minimal coupling required to observe the coherent state is largely independent of the system size and it saturates to a constant value already for moderately large inertia values. The incoherent state is observable up to a critical coupling whose value saturates for large inertia and for finite system sizes, while in the thermodinamic limit this critical value diverges proportionally to the mass. By increasing the inertia the transition becomes more complex, and the synchronization occurs via the emergence of clusters of whirling oscillators. The presence of these groups of coherently drifting oscillators induces oscillations in the order parameter. We have shown that the transition remains hysteretic even for randomly diluted networks up to a level of connectivity corresponding to few links per oscillator. Finally, an application to the Italian high-voltage power grid is reported, which reveals the emergence of quasi-periodic oscillations in the order parameter due to the simultaneous presence of many competing whirling clusters.

Simona Olmi; Adrian Navas; Stefano Boccaletti; Alessandro Torcini

2014-06-14T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

Statistical and evaporation models for the neutron emission energy spectrum in the center-of-mass system from fission fragments  

Science Journals Connector (OSTI)

Abstract The neutron emission energy spectra in the CMS (center-of-mass) frame from two compound nuclei produced by fission are studied. The neutron spectra calculated with the Hauser–Feshbach statistical model are compared with the evaporation theory, and the definition of the temperature is revisited. Using the Monte Carlo technique we average the CMS neutron spectra from many fission fragments to construct the representative CMS spectrum from both the light and heavy fragments. The CMS spectra for each fission fragment pair are also converted into the laboratory frame to calculate the total prompt fission neutron spectrum that can be observed experimentally. This is compared to measured laboratory data for thermal neutron induced fission on 235U. We show that the Hauser–Feshbach calculation gives a different spectrum shape than the Madland–Nix model calculation.

T. Kawano; P. Talou; I. Stetcu; M.B. Chadwick

2013-01-01T23:59:59.000Z

242

A systemic perspective for mass customization: an approach for product lines definition Antonio Giovannini1,2,3, Alexis Aubry1,2, Herv Panetto1,2, Hind El Haouzi1,2  

E-Print Network [OSTI]

A systemic perspective for mass customization: an approach for product lines definition Antonio and commercializes air-handling systems. In MC, a commonly accepted solution for managing product variety is develop a configuration system in which customer can enter values for some options in order to define a product variant

Paris-Sud XI, Université de

243

HOMOGENEOUS CATALYSIS AND MASS TRANSFER IN BIPHASIC IONIC LIQUID SYSTEMS WITH COMPRESSED CO2 AND ORGANIC COMPOUNDS  

E-Print Network [OSTI]

is separating and reusing precious metal catalyst; therefore, it needs to be performed in a convenient platform. To figure out this problem, a biphasic system can be suggested in which one phase sequesters the solid catalyst and the other phase delivers...

Ahosseini, Azita

244

Adaptive Optimization and Systematic Probing of Infrastructure System Maintenance Policies under Model Uncertainty  

E-Print Network [OSTI]

bridge management system Pontis, transition probabilityeld of pavement management. The data, such as transition

Madanat, S M; Park, Sejung; Kuhn, K D

2006-01-01T23:59:59.000Z

245

An adaptive incremental approach to constructing ensemble classifiers: Application in an information-theoretic computer-aided decision system for detection of masses in mammograms  

SciTech Connect (OSTI)

Ensemble classifiers have been shown efficient in multiple applications. In this article, the authors explore the effectiveness of ensemble classifiers in a case-based computer-aided diagnosis system for detection of masses in mammograms. They evaluate two general ways of constructing subclassifiers by resampling of the available development dataset: Random division and random selection. Furthermore, they discuss the problem of selecting the ensemble size and propose two adaptive incremental techniques that automatically select the size for the problem at hand. All the techniques are evaluated with respect to a previously proposed information-theoretic CAD system (IT-CAD). The experimental results show that the examined ensemble techniques provide a statistically significant improvement (AUC=0.905{+-}0.024) in performance as compared to the original IT-CAD system (AUC=0.865{+-}0.029). Some of the techniques allow for a notable reduction in the total number of examples stored in the case base (to 1.3% of the original size), which, in turn, results in lower storage requirements and a shorter response time of the system. Among the methods examined in this article, the two proposed adaptive techniques are by far the most effective for this purpose. Furthermore, the authors provide some discussion and guidance for choosing the ensemble parameters.

Mazurowski, Maciej A.; Zurada, Jacek M.; Tourassi, Georgia D. [Department of Radiology, Carl E. Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, North Carolina 27705 (United States); Department of Electrical and Computer Engineering, Computational Intelligence Laboratory, University of Louisville, Louisville, Kentucky 40292 (United States); Department of Radiology, Carl E. Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, North Carolina 27705 (United States)

2009-07-15T23:59:59.000Z

246

Energy Transition Initiative: Islands Playbook (Book)  

SciTech Connect (OSTI)

The Island Energy Playbook (the Playbook) provides an action-oriented guide to successfully initiating, planning, and completing a transition to an energy system that primarily relies on local resources to eliminate a dependence on one or two imported fuels. It is intended to serve as a readily available framework that any community can adapt to organize its own energy transition effort.

Not Available

2015-01-01T23:59:59.000Z

247

Gas turbine combustor transition  

DOE Patents [OSTI]

A method is described for converting a steam cooled transition to an air cooled transition in a gas turbine having a compressor in fluid communication with a combustor, a turbine section in fluid communication with the combustor, the transition disposed in a combustor shell and having a cooling circuit connecting a steam outlet and a steam inlet and wherein hot gas flows from the combustor through the transition and to the turbine section, includes forming an air outlet in the transition in fluid communication with the cooling circuit and providing for an air inlet in the transition in fluid communication with the cooling circuit. 7 figs.

Coslow, B.J.; Whidden, G.L.

1999-05-25T23:59:59.000Z

248

On the global uniqueness for the Einstein-Maxwell-scalar field system with a cosmological constant. Part 3: Mass inflation and extendibility of the solutions  

E-Print Network [OSTI]

This paper is the third part of a trilogy dedicated to the following problem: given spherically symmetric characteristic initial data for the Einstein-Maxwell-scalar field system with a cosmological constant $\\Lambda$, with the data on the outgoing initial null hypersurface given by a subextremal Reissner-Nordstrom black hole event horizon, study the future extendibility of the corresponding maximal globally hyperbolic development as a "suitably regular" Lorentzian manifold. In the first part of this series we established the well posedness of the characteristic problem, whereas in the second part we studied the stability of the radius function at the Cauchy horizon. In this third and final paper we show that, depending on the decay rate of the initial data, mass inflation may or may not occur. When the mass is controlled, it is possible to obtain continuous extensions of the metric across the Cauchy horizon with square integrable Christoffel symbols. Under slightly stronger conditions, we can bound the gradient of the scalar field. This allows the construction of (non-isometric) extensions of the maximal development which are classical solutions of the Einstein equations. Our results provide evidence against the validity of the strong cosmic censorship conjecture when $\\Lambda>0$.

João L. Costa; Pedro M. Girão; José Natário; Jorge Drumond Silva

2014-07-18T23:59:59.000Z

249

309 Building transition plan  

SciTech Connect (OSTI)

The preparation for decontamination and decommissioning (transition) of the 309 Building is projected to be completed by the end of the fiscal year (FY) 1998. The major stabilization and decontamination efforts include the Plutonium Recycle Test Reactor (PRTR), fuel storage and transfer pits, Transfer Waste (TW) tanks and the Ion Exchange Vaults. In addition to stabilizing contaminated areas, equipment, components, records, waste products, etc., will be dispositioned. All nonessential systems, i.e., heating, ventilation, and air conditioning (HVAC), electrical, monitoring, fluids, etc., will be shut down and drained/de-energized. This will allow securing of the process, laboratory, and office areas of the facility. After that, the facility will be operated at a level commensurate with its surveillance needs while awaiting D&D. The implementation costs for FY 1995 through FY 1998 for the transition activities are estimated to be $1,070K, $2,115K, $2,939K, and $4,762K, respectively. Costs include an assumed company overhead of 20% and a 30% out year contingency.

Graves, C.E.

1994-08-31T23:59:59.000Z

250

Phase transitions in quark matter under strong magnetic fields  

SciTech Connect (OSTI)

In this work we use de SU(2) Nambu-Jona-Lasinio model to study the chiral transition at finite temperature, chemical potential and magnetic field. We show how the magnetic field affects the location of the critical end-point in the phase diagram, the constituent quark masses and the spinodal lines concerning the first order transition.

Garcia, Andre F.; Pinto, Marcus B. [Physics Department, Universidade Federal de Santa Catarina (Brazil)

2013-03-25T23:59:59.000Z

251

The energy construction of the Sun and planets of the solar system from the viewpoint of mechanics of the inertless mass  

E-Print Network [OSTI]

This monograph (1977) is a continuation of the monograph "The construction of the Sun and planets of the solar system from the viewpoint of mechanics of the inertless mass" (refer to: http://arxiv.org/abs/physics/0701258, part 1, http://arxiv.org/abs/physics/0701259, part 2). This manuscript concerning the studies of the energy structure of the Sun and planets was discovered in the archive of the author in 2009. Being a draft version, it contains some remarks of the author on other subjects and has a free style. The editor has omitted all the retreats of the author. Thus, the work is a final study and is intended for the reader who is familiar with previous studies of the author that are placed in this Archive.

I. Z. Shkurchenko

2010-01-14T23:59:59.000Z

252

Piecewise Linear Phase Transitions  

E-Print Network [OSTI]

It is shown how simple assumptions lead to piecewise linear behavior, which is observed in certain phase transitions.

Joseph B. Keller

2007-11-26T23:59:59.000Z

253

Phase separation in the spin-state transition system of La{sub 1-x}Ba{sub x}CoO{sub 3}  

SciTech Connect (OSTI)

The magnetic and electric transport properties of La{sub 1-x}Ba{sub x}CoO{sub 3} (0transition of Co{sup 3+} have been differentiated for the substitution of Ba{sup 2+} for La{sup 3+} in La{sub 1-x}Ba{sub x}CoO{sub 3}. The first is the transition from low-spin state to high-spin state due to lattice expansion, and the second is the transition from low-spin state to intermediate-spin state caused by the strong hybridization between ligand (oxygen) 2p and Co 3d orbital with introduction of holes in the oxygen 2p orbital. Based on the two different spin-state transition mechanisms and experimental results, a phase separation model has been developed and a very detailed magnetic and electric phase diagram of La{sub 1-x}Ba{sub x}CoO{sub 3} has been constructed. - Abstract: x dependence of the calculated results from a phase separation model. Display Omitted

Luo Wanju, E-mail: wanjuluo@msn.co [State Key Laboratory of Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Wang Fangwei, E-mail: fwwang@aphy.iphy.ac.c [State Key Laboratory of Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2009-11-15T23:59:59.000Z

254

Assessment of terrigenous organic carbon input to the total organic carbon in sediments from Scottish transitional waters Hydrology and Earth System Sciences, 6(6), 959970 (2002) EGS  

E-Print Network [OSTI]

Assessment of terrigenous organic carbon input to the total organic carbon in sediments from of terrigenous organic carbon input to the total organic carbon in sediments from Scottish transitional waters This paper addresses the assessment of terrestrially derived organic carbon in sediments from two Scottish

Paris-Sud XI, Université de

255

Management Transition Guidance  

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

Records and Information Records and Information Management Transition Guidance November 2013 Records and Information Management Transition Guidance i Records and Information Management Transition Guidance Table of Contents Executive Summary ........................................................................................................................ 1 1.0 Introduction and Purpose ..................................................................................................... 1 LM Records Functions ................................................................................................................ 1 2.0 The Records Life Cycle ....................................................................................................... 2 3.0 Organizational Responsibilities ........................................................................................... 2

256

Articulated transition duct in turbomachine  

SciTech Connect (OSTI)

Turbine systems are provided. A turbine system includes a transition duct comprising an inlet, an outlet, and a duct passage extending between the inlet and the outlet and defining a longitudinal axis, a radial axis, and a tangential axis. The outlet of the transition duct is offset from the inlet along the longitudinal axis and the tangential axis. The duct passage includes an upstream portion and a downstream portion. The upstream portion extends from the inlet between an inlet end and an aft end. The downstream portion extends from the outlet between an outlet end and a head end. The turbine system further includes a joint coupling the aft end of the upstream portion and the head end of the downstream portion together. The joint is configured to allow movement of the upstream portion and the downstream portion relative to each other about or along at least one axis.

Flanagan, James Scott; McMahan, Kevin Weston; LeBegue, Jeffrey Scott; Pentecost, Ronnie Ray

2014-04-29T23:59:59.000Z

257

Evaluation of traffic signal controller transition methods  

E-Print Network [OSTI]

A coordinated signal system achieves the best traffic progression when the signal plans are optimized at the correct offsets and intervals. When traffic conditions change and a transition to a new timing plan is warranted, it is important to reach...

Hamilton, Curtis Lloyd

2000-01-01T23:59:59.000Z

258

A hot Jupiter transiting a mid-K dwarf found in the pre-OmegaCam Transit Survey  

E-Print Network [OSTI]

We describe the pre-OmegaTranS project, a deep survey for transiting extra-solar planets in the Carina region of the Galactic Disk. In 2006-2008 we observed a single dense stellar field with a very high cadence of ~2min using the ESO Wide Field Imager at the La Silla Observatory. Using the Astronomical Wide-field System for Europe and the Munich Difference Imaging Analysis pipeline, a module that has been developed for this project, we created the light curves of 16000 stars with more than 4000 data points which we searched for periodic transit signals using a box-fitting least-squares detection algorithm. All light curves are publicly available. In the course of the pre-OmegaTranS project we identified two planet candidates - POTS-1b and POTS-C2b - which we present in this work. With extensive follow-up observations we were able to confirm one of them, POTS-1b, a hot Jupiter transiting a mid-K dwarf. The planet has a mass of 2.31+-0.77M_Jup and a radius of 0.94+-0.04R_Jup and a period of P=3.16d. The host st...

Koppenhoefer, J; Fossati, L; Lyubchik, Y; Mugrauer, M; Bender, R; Lee, C -H; Riffeser, A; Afonso, P; Greiner, J; Henning, Th; Neuhäuser, R; Snellen, I A G; Pavlenko, Y; Verdugo, M; Vogt, N

2013-01-01T23:59:59.000Z

259

Transitive associations 1 Running head: TRANSITIVE ASSOCIATIONS  

E-Print Network [OSTI]

transitions; across-pair associations (e.g. A-C) showed no evidence for asymmetry. While this pattern; Kahana, Howard, Zaromb, & Wingfield, 2002; Klein, Addis, & Kahana, 2005) estimates the probability

Howard, Marc

260

Polaron-molecule transitions in a two-dimensional Fermi gas  

SciTech Connect (OSTI)

We address the problem of a single 'spin-down' impurity atom interacting attractively with a spin-up Fermi gas in two dimensions (2D). We consider the case where the mass of the impurity is greater than or equal to the mass of a spin-up fermion. Using a variational approach, we resolve the questions raised by previous studies and show that there is, in fact, a transition between polaron and molecule (dimer) ground states in 2D. For the molecule state, we use a variational wave function with a single particle-hole excitation on the Fermi sea and we find that its energy matches that of the exact solution in the limit of infinite impurity mass. Thus, we expect the variational approach to provide a reliable tool for investigating 2D systems.

Parish, Meera M. [Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE (United Kingdom)

2011-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

Design and Realization of a Multi-modal/Multi-Agency Transit Management  

E-Print Network [OSTI]

1 Design and Realization of a Multi-modal/Multi-Agency Transit Management and Information System D four transit agencies. The result is a set of web applications suitable for both transit management of traveler information and transit management systems that span four agencies in Washington State, USA

262

Rapid scanning mass spectrometer  

SciTech Connect (OSTI)

Mass spectrometers and residual gas analyzers (RGA) are used in a variety of applications for analysis of volatile and semi-volatile materials. Analysis is performed by detecting fragments of gas molecules, based on their mass to charge ratio, which are generated in the mass spectrometer. When used as a detector for a gas chromatograph, they function as a means to quantitatively identify isolated volatile species which have been separated from other species via the gas chromatograph. Vacuum Technology, Inc., (VTI) produces a magnetic sector mass spectrometer/RGA which is used in many industrial and laboratory environments. In order to increase the utility of this instrument, it is desirable to increase the mass scanning speed, thereby increasing the number of applications for which it is suited. This project performed the following three upgrades on the computer interface. (1) A new electrometer was designed and built to process the signal from the detector. This new electrometer is more sensitive, over 10 times faster, and over 100 times more stable than the electrometer it will replace. (2) The controller EPROM was reprogrammed with new firmware. This firmware acts as an operating system for the interface and is used to shuttle communications between the PC and the AEROVAC mass spectrometer. (3) The voltage regulator which causes the ion selector voltage to ramp to allow ions of selected mass to be sequentially detected was redesigned and prototyped. The redesigned voltage regulator can be ramped up or down more than 100 times faster than the existing regulator. These changes were incorporated into a prototype unit and preliminary performance testing conducted. Results indicated that scanning speed was significantly increased over the unmodified version.

Leckey, J.H. [Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States); Boeckmann, M.D. [Vacuum Technology, Inc., Oak Ridge, TN (United States)

1996-11-25T23:59:59.000Z

263

WASP-36b: A New Transiting Planet around a Metal-poor G-dwarf, and an Investigation into Analyses Based on a Single Transit Light Curve  

Science Journals Connector (OSTI)

We report the discovery, from WASP and CORALIE, of a transiting exoplanet in a 1.54 day orbit. The host star, WASP-36, is a magnitude V = 12.7, metal-poor G2 dwarf ( K), with [Fe/H] =?0.26 ? 0.10. We determine the planet to have mass and radius, respectively, 2.30 ? 0.07 and 1.28 ? 0.03 times that of Jupiter. We have eight partial or complete transit light curves, from four different observatories, which allow us to investigate the potential effects on the fitted system parameters of using only a single light curve. We find that the solutions obtained by analyzing each of these light curves independently are consistent with our global fit to all the data, despite the apparent presence of correlated noise in at least two of the light curves.

A. M. S. Smith; D. R. Anderson; A. Collier Cameron; M. Gillon; C. Hellier; M. Lendl; P. F. L. Maxted; D. Queloz; B. Smalley; A. H. M. J. Triaud; R. G. West; S. C. C. Barros; E. Jehin; F. Pepe; D. Pollacco; D. Segransan; J. Southworth; R. A. Street; S. Udry

2012-01-01T23:59:59.000Z

264

Phase transitions and the stability of atomic and molecular ions Sabre Kaisa,  

E-Print Network [OSTI]

Phase transitions and the stability of atomic and molecular ions Sabre Kaisa, *, Juan Pablo is varied. For such transitions, crossing the phase boundary means that the quantum ground state changes Mass Spectrom 182/183 (1999) 23­29) © 1999 Elsevier Science B.V. Keywords: Phase transitions; Stability

Kais, Sabre

265

Roughening Transition in a Moving Contact Line  

E-Print Network [OSTI]

The dynamics of the deformations of a moving contact line on a disordered substrate is formulated, taking into account both local and hydrodynamic dissipation mechanisms. It is shown that both the coating transition in contact lines receding at relatively high velocities, and the pinning transition for slowly moving contact lines, can be understood in a unified framework as roughening transitions in the contact line. We propose a phase diagram for the system in which the phase boundaries corresponding to the coating transition and the pinning transition meet at a junction point, and suggest that for sufficiently strong disorder a receding contact line will leave a Landau--Levich film immediately after depinning. This effect may be relevant to a recent experimental observation in a liquid Helium contact line on a Cesium substrate [C. Guthmann, R. Gombrowicz, V. Repain, and E. Rolley, Phys. Rev. Lett. {\\bf 80}, 2865 (1998)].

Ramin Golestanian; Elie Raphael

2002-04-24T23:59:59.000Z

266

Transitions in the quantum computational power  

E-Print Network [OSTI]

We construct two spin models on lattices (both two and three-dimensional) to study the capability of quantum computational power as a function of temperature and the system parameter. There exists a finite region in the phase diagram such that the thermal equilibrium states are capable of providing a universal fault-tolerant resource for measurement-based quantum computation. Moreover, in such a region the thermal resource states on the 3D lattices can enable topological protection for quantum computation. The two models behave similarly in terms of quantum computational power. However, they have different properties in terms of the usual phase transitions. The first model has a first-order phase transition only at zero temperature whereas there is no transition at all in the second model. Interestingly, the transition in the quantum computational power does not coincide with the phase transition in the first model.

Tzu-Chieh Wei; Ying Li; Leong Chuan Kwek

2014-02-18T23:59:59.000Z

267

Mini ion trap mass spectrometer  

DOE Patents [OSTI]

An ion trap is described which operates in the regime between research ion traps which can detect ions with a mass resolution of better than 1:10{sup 9} and commercial mass spectrometers requiring 10{sup 4} ions with resolutions of a few hundred. The power consumption is kept to a minimum by the use of permanent magnets and a novel electron gun design. By Fourier analyzing the ion cyclotron resonance signals induced in the trap electrodes, a complete mass spectra in a single combined structure can be detected. An attribute of the ion trap mass spectrometer is that overall system size is drastically reduced due to combining a unique electron source and mass analyzer/detector in a single device. This enables portable low power mass spectrometers for the detection of environmental pollutants or illicit substances, as well as sensors for on board diagnostics to monitor engine performance or for active feedback in any process involving exhausting waste products. 10 figs.

Dietrich, D.D.; Keville, R.F.

1995-09-19T23:59:59.000Z

268

Mini ion trap mass spectrometer  

DOE Patents [OSTI]

An ion trap which operates in the regime between research ion traps which can detect ions with a mass resolution of better than 1:10.sup.9 and commercial mass spectrometers requiring 10.sup.4 ions with resolutions of a few hundred. The power consumption is kept to a minimum by the use of permanent magnets and a novel electron gun design. By Fourier analyzing the ion cyclotron resonance signals induced in the trap electrodes, a complete mass spectra in a single combined structure can be detected. An attribute of the ion trap mass spectrometer is that overall system size is drastically reduced due to combining a unique electron source and mass analyzer/detector in a single device. This enables portable low power mass spectrometers for the detection of environmental pollutants or illicit substances, as well as sensors for on board diagnostics to monitor engine performance or for active feedback in any process involving exhausting waste products.

Dietrich, Daniel D. (Livermore, CA); Keville, Robert F. (Valley Springs, CA)

1995-01-01T23:59:59.000Z

269

Mass Market Demand Response  

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

Mass Market Demand Response Mass Market Demand Response Speaker(s): Karen Herter Date: July 24, 2002 - 12:00pm Location: Bldg. 90 Demand response programs are often quickly and poorly crafted in reaction to an energy crisis and disappear once the crisis subsides, ensuring that the electricity system will be unprepared when the next crisis hits. In this paper, we propose to eliminate the event-driven nature of demand response programs by considering demand responsiveness a component of the utility obligation to serve. As such, demand response can be required as a condition of service, and the offering of demand response rates becomes a requirement of utilities as an element of customer service. Using this foundation, we explore the costs and benefits of a smart thermostat-based demand response system capable of two types of programs: (1) a mandatory,

270

Mass Production Cost Estimation of Direct Hydrogen PEM Fuel Cell...  

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

Mass Production Cost Estimation of Direct Hydrogen PEM Fuel Cell Systems for Transportation Applications: 2012 Update Mass Production Cost Estimation of Direct Hydrogen PEM Fuel...

271

Dynamic Transitions of Surface Tension Driven Convection  

E-Print Network [OSTI]

We study the well-posedness and dynamic transitions of the surface tension driven convection in a three-dimensional (3D) rectangular box with non-deformable upper surface and with free-slip boundary conditions. It is shown that as the Marangoni number crosses the critical threshold, the system always undergoes a dynamic transition. In particular, two different scenarios are studied. In the first scenario, a single mode losing its stability at the critical parameter gives rise to either a Type-I (continuous) or a Type-II (jump) transition. The type of transitions is dictated by the sign of a computable non-dimensional parameter, and the numerical computation of this parameter suggests that a Type-I transition is favorable. The second scenario deals with the case where the geometry of the domain allows two critical modes which possibly characterize a hexagonal pattern. In this case we show that the transition can only be either a Type-II or a Type-III (mixed) transition depending on another computable non-dimensional parameter. We only encountered Type-III transition in our numerical calculations. The second part of the paper deals with the well-posedness and existence of global attractors for the problem.

Henk Dijkstra; Taylan Sengul; Shouhong Wang

2011-05-05T23:59:59.000Z

272

QCD Thermodynamics with an almost realistic quark mass spectrum  

E-Print Network [OSTI]

We will report on the status of a new large scale calculation of thermodynamic quantities in QCD with light up and down quarks corresponding to an almost physical light quark mass value and a heavier strange quark mass. These calculations are currently being performed on the QCDOC Teraflops computers at BNL. We will present new lattice calculations of the transition temperature and various susceptibilities reflecting properties of the chiral transition. All these quantities are of immediate interest for heavy ion phenomenology.

C. Schmidt

2006-01-25T23:59:59.000Z

273

Band structure of doubly-odd nuclei around mass 130  

SciTech Connect (OSTI)

Nuclear structure of the doublet bands in the doubly-odd nuclei with mass A{approx}130 is studied in terms of a pair-truncated shell model. The model reproduces quite well the energy levels of the doublet bands and the electromagnetic transitions. The analysis of the electromagnetic transitions reveals new band structure of the doublet bands.

Higashiyama, Koji [Department of Physics, Chiba Institute of Technology, Narashino, Chiba 275-0023 (Japan); Yoshinaga, Naotaka [Department of Physics, Saitama University, Saitama City 338-8570 (Japan)

2011-05-06T23:59:59.000Z

274

On transition to bursting via deterministic chaos  

E-Print Network [OSTI]

We study statistical properties of the irregular bursting arising in a class of neuronal models close to the transition from spiking to bursting. Prior to the transition to bursting, the systems in this class develop chaotic attractors, which generate irregular spiking. The chaotic spiking gives rise to irregular bursting. The duration of bursts near the transition can be very long. We describe the statistics of the number of spikes and the interspike interval distributions within one burst as functions of the distance from criticality.

Georgi S. Medvedev

2006-05-13T23:59:59.000Z

275

Experience with split transition lattices at RHIC  

SciTech Connect (OSTI)

During the acceleration process, heavy ion beams in RHIC cross the transition energy. When RHIC was colliding deuterons and gold ions during Run-8, lattices with different integer tunes were used for the two rings. This resulted in the two rings crossing transition at different times, which proved beneficial for the 'Yellow' ring, the RF system of which is slaved to the 'Blue' ring. For the symmetric gold-gold run in FY2010, lattices with different transition energies but equal tunes were implemented. We report the optics design concept as well as operational experience with this configuration.

Montag, C.; Tepikian, S.; Blaskiewicz, M.; Brennan, J.M.

2010-05-23T23:59:59.000Z

276

Numerical Simulations of Hyperfine Transitions of Antihydrogen  

E-Print Network [OSTI]

One of the ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) collaboration's goals is the measurement of the ground state hyperfine transition frequency in antihydrogen, the antimatter counterpart of one of the best known systems in physics. This high precision experiment yields a sensitive test of the fundamental symmetry of CPT. Numerical simulations of hyperfine transitions of antihydrogen atoms have been performed providing information on the required antihydrogen events and the achievable precision.

Kolbinger, B; Diermaier, M; Lehner, S; Malbrunot, C; Massiczek, O; Sauerzopf, C; Simon, M C; Widmann, E

2015-01-01T23:59:59.000Z

277

Transition from inspiral to plunge for eccentric equatorial Kerr orbits  

E-Print Network [OSTI]

Ori and Thorne have discussed the duration and observability (with LISA) of the transition from circular, equatorial inspiral to plunge for stellar-mass objects into supermassive ($10^{5}-10^{8}M_{\\odot}$) Kerr black holes. We extend their computation to eccentric Kerr equatorial orbits. Even with orbital parameters near-exactly determined, we find that there is no universal length for the transition; rather, the length of the transition depends sensitively -- essentially randomly -- on initial conditions. Still, Ori and Thorne's zero-eccentricity results are essentially an upper bound on the length of eccentric transitions involving similar bodies (e.g., $a$ fixed). Hence the implications for observations are no better: if the massive body is $M=10^{6}M_{\\odot}$, the captured body has mass $m$, and the process occurs at distance $d$ from LISA, then $S/N \\lesssim (m/10 M_{\\odot})(1\\text{Gpc}/d)\\times O(1)$, with the precise constant depending on the black hole spin. For low-mass bodies ($m \\lesssim 7 M_\\odot$) for which the event rate is at least vaguely understood, we expect little chance (probably [much] less than 10%, depending strongly on the astrophysical assumptions) of LISA detecting a transition event with $S/N>5$ during its run; however, even a small infusion of higher-mass bodies or a slight improvement in LISA's noise curve could potentially produce $S/N>5$ transition events during LISA's lifetime.

R. O'Shaughnessy

2002-11-07T23:59:59.000Z

278

DOE Grids Service Transition  

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

DOE Grids Service Transition DOE Grids Service Transition Services Overview ECS Audio/Video Conferencing Fasterdata IPv6 Network Network Performance Tools (perfSONAR) ESnet OID Registry PGP Key Service Virtual Circuits (OSCARS) DOE Grids Service Transition Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net DOE Grids Service Transition Background ESnet has decided to transition support and management for the certificate services provided by the DOE Grids public key infrastructure (PKI) to the Open Sciences Grid (OSG). OSG and ESnet provide service to many of the same user communities, and have long been collaborators in the areas of identity

279

Structural characteristics of the B6 phase for a bent-core molecular system observed through the B1-B6 transition  

Science Journals Connector (OSTI)

A bent-shaped molecule exhibiting the mesophase sequence of B6-B1 was studied to understand the structural characteristics of the B6 phase compared with those of the B1 phase. A well-oriented sample was prepared in a magnetic field and examined by wide-angle x-ray diffraction measurements through the B6-B1 phase transition. The B6 phase has been considered to show only the (002) reflection, but this B6 phase showed broad scattering just inside the (002) reflection. The broad scattering has an intensity maximum at a very similar position to that of the (101) reflection in B1 and evolves into the well-defined (101) reflection on cooling into B1. Thus, B6 has a similar frustrated structure to B1, but the size of the antidomain in B6 may be dynamically distributed while B1 possesses an antidomain of definite size.

Sungmin Kang; Seng Kue Lee; Masatoshi Tokita; Junji Watanabe

2009-10-21T23:59:59.000Z

280

Motion of the guest ion as precursor to the first-order phase transition in the cage system GdB6  

Science Journals Connector (OSTI)

The motion of guest Gd ions in oversized boron cages in GdB6 was investigated from phonon spectra measurements obtained by inelastic x-ray scattering. The measured phonon modes soften by about 10% from 300 K down to TN=16 K, in particular, the longitudinal phonon for the propagation vector q1=(1/2,0,0) that characterizes the distorted structure below TN. Besides, the dispersion relation curves show kinklike anomalies at qk=(0.38,0.38,0). The observed results imply that the motion of the guest Gd ion interplays with the f electrons magnetoelastically and with carriers via Fermi surface nesting. The anomalous properties previously reported for this material far above TN originate from the strong electron-phonon coupling, which causes the motion of guest ions as precursors to the first-order phase transition.

Kazuaki Iwasa; Ryosuke Igarashi; Kotaro Saito; Claire Laulhé; Toshihiko Orihara; Satoru Kunii; Keitaro Kuwahara; Hironori Nakao; Youichi Murakami; Fumitoshi Iga; Masafumi Sera; Satoshi Tsutsui; Hiroshi Uchiyama; Alfred Q. R. Baron

2011-12-28T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

Connecticut Transit (CTTRANSIT) Fuel Cell Transit Bus: Second...  

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

Second Evaluation Report and Appendices Connecticut Transit (CTTRANSIT) Fuel Cell Transit Bus: Second Evaluation Report and Appendices This report describes operations at...

282

Kinetics of the Reaction of the Heaviest Hydrogen Atom with H2, the 4He? + H2 -> 4He?? + H Reaction: Experiments, Accurate Quantal Calculations, and Variational Transition State Theory, including Kinetic Isotope Effects for a Factor of 36.1 in Isotopic Mass  

SciTech Connect (OSTI)

The neutral muonic helium atom {sup 4}He{mu}, in which one of the electrons of He is replaced by a negative muon, may be effectively regarded as the heaviest isotope of the hydrogen atom, with a mass of 4.115 amu. We report details of the first muon spin rotation ({mu}SR) measurements of the chemical reaction rate constant of {sup 4}He{mu} with molecular hydrogen, {sup 4}He{mu} + H{sub 2} {yields} {sup 4}He{mu}H + H, at temperatures of 295.5, 405, and 500 K, as well as a {mu}SR measurement of the hyperfine coupling constant of muonic He at high pressures. The experimental rate constants, k{sub He{mu}}, are compared with the predictions of accurate quantum mechanical (QM) dynamics calculations carried out on a well converged Born-Huang (BH) potential energy surface, based on complete configuration interaction calculations and including a Born-Oppenheimer diagonal correction. At the two highest measured temperatures the agreement between the quantum theory and experiment is good to excellent, well within experimental uncertainties that include an estimate of possible systematic error, but at 295.5 K the quantum calculations for k{sub He{mu}} are below the experimental value by 2.1 times the experimental uncertainty estimates. Possible reasons for this discrepancy are discussed. Variational transition state theory calculations with multidimensional tunneling have also been carried out for k{sub He{mu}} on the BH surface, and they agree with the accurate QM rate constants to within 30% over a wider temperature range of 200-1000 K. Comparisons between theory and experiment are also presented for the rate constants for both the D + H{sub 2} and Mu + H{sub 2} reactions in a novel study of kinetic isotope effects for the H + H{sub 2} reactions over a factor of 36.1 in isotopic mass of the atomic reactant.

Fleming, Donald G.; Arseneau, Donald J.; Sukhorukov, Oleksandr; Brewer, Jess H.; Mielke, Steven L.; Truhlar, Donald G.; Schatz, George C.; Garrett, Bruce C.; Peterson, Kirk A.

2011-11-14T23:59:59.000Z

283

Theorising governance and innovation in sustainable energy transitions  

E-Print Network [OSTI]

Theorising governance and innovation in sustainable energy transitions Matthew Lockwood, Caroline to a sustainable energy future. This paper presents a tentative, provisional framework for analysing energy system. A provisional hypothesis is that the UK's ability to make the transition to a sustainable energy system

Sussex, University of

284

Holographic Magnetic Phase Transition  

E-Print Network [OSTI]

We study four-dimensional interacting fermions in a strong magnetic field, using the holographic Sakai-Sugimoto model of intersecting D4 and D8 branes in the deconfined, chiral-symmetric parallel phase. We find that as the magnetic field is varied, while staying in the parallel phase, the fermions exhibit a first-order phase transition in which their magnetization jumps discontinuously. Properties of this transition are consistent with a picture in which some of the fermions jump to the lowest Landau level. Similarities to known magnetic phase transitions are discussed.

Gilad Lifschytz; Matthew Lippert

2009-06-21T23:59:59.000Z

285

Information and Records Management Transition Guidance | Department...  

Energy Savers [EERE]

Information and Records Management Transition Guidance Information and Records Management Transition Guidance Information and Records Management Transition Guidance (March 2004)...

286

Superfluidity at the BEC-BCS crossover in two-dimensional Fermi gases with population and mass imbalance  

Science Journals Connector (OSTI)

We explore the zero-temperature phase behavior of a two-dimensional two-component atomic Fermi gas with population and mass imbalance in the regime of the BEC-BCS crossover. Working in the mean-field approximation, we show that the normal and homogeneous balanced superfluid phases are separated by an inhomogeneous superfluid phase of Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) type. We obtain an analytical expression for the line of continuous transitions separating the normal and inhomogeneous FFLO phases. We further show that the transition from the FFLO phase to the homogeneous balanced superfluid is discontinuous leading to phase separation. If the species have different masses, the superfluid phase is favored when the lighter species is in excess. We explore the implications of these findings for the properties of the two-component Fermi gas in the atomic trap geometry. Finally, we compare and contrast our findings with the predicted phase behavior of the electron-hole bilayer system.

G. J. Conduit; P. H. Conlon; B. D. Simons

2008-05-29T23:59:59.000Z

287

Double wells, scalar fields and quantum phase transitions in ions traps  

E-Print Network [OSTI]

Since Hund's work on the ammonia molecule, the double well potential has formed a key paradigm in physics. Its importance is further underlined by the central role it plays in the Landau theory of phase transitions. Recently, the study of entanglement properties of many-body systems has added a new angle to the study of quantum phase transitions of discrete and continuous degrees of freedom, i.e., spin and harmonic chains. Here we show that control of the radial degree of freedom of trapped ion chains allows for the simulation of linear and non-linear Klein-Gordon fields on a lattice, in which the parameters of the lattice, the non-linearity and mass can be controlled at will. The system may be driven through a phase transition creating a double well potential between different configurations of the ion crystal. The dynamics of the system are controllable, local properties are measurable and tunnelling in the double well potential would be observable.

A. Retzker; R. Thompson; D. Segal; M. B. Plenio

2008-01-04T23:59:59.000Z

288

Abstract--Since the rise in popularity of type-2 fuzzy logic systems a reoccurring problem has been the transition from  

E-Print Network [OSTI]

for type-1 fuzzy logic, in particular in the areas of fuzzy logic systems and fuzzy logic control. More]. While fuzzy logic control has remained at the forefront of type-2 fuzzy logic applications, the focusi Abstract-- Since the rise in popularity of type-2 fuzzy logic systems a reoccurring problem has

Aickelin, Uwe

289

Wildfire Policy in Transition Yellowstone  

E-Print Network [OSTI]

Wildfire Policy in Transition 1910 #12;Yellowstone 1988 #12;Colorado South Canyon Fire 1994 #12;#12;Wildfire Policy in Transition 1910 #12;

290

Transition-Metal Hydrides  

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

Transition-Metal Hydride Electrochromics Transition-Metal Hydride Electrochromics A new type of electrochromic hydride material has interesting and unusual properties. Thin Ni-Mg films, for example, are mirror-like in appearance and have very low visible transmittance. On exposure to hydrogen gas or on reduction in alkaline electrolyte, the films become transparent. The transition is believed to result from formation of nickel magnesium hydride, Mg2NiH4. Switchable mirrors based on rare earth hydrides were discovered in 1996 at Vrije University in the Netherlands, Rare earth-magnesium alloy films were subsequently found to be superior to the pure lanthanides in maximum transparency and mirror-state reflectivity by Philips Laboratories. The newer transition-metal types which use less expensive and less reactive materials were discovered at LBNL. This has now become a very active area of study with a network of researchers.

291

MATHEMATICS: RETHINKING THE TRANSITION  

E-Print Network [OSTI]

SENIOR SECONDARY MATHEMATICS: RETHINKING THE TRANSITION BILL BARTON THE UNIVERSITY OF AUCKLAND, NZ #12;THE ENVISIONING PROJECT · Mathematics education project of NZIMA (New Zealand Institute of Mathematics & Its Applications--the mathematics research funding body). · Brought together mathematics

Peters, Achim

292

Alternative fuel transit buses  

SciTech Connect (OSTI)

The National Renewable Energy Laboratory (NREL) is a U.S. Department of Energy (DOE) national laboratory; this project was funded by DOE. One of NREL`s missions is to objectively evaluate the performance, emissions, and operating costs of alternative fuel vehicles so fleet managers can make informed decisions when purchasing them. Alternative fuels have made greater inroads into the transit bus market than into any other. Each year, the American Public Transit Association (APTA) surveys its members on their inventory and buying plans. The latest APTA data show that about 4% of the 50,000 transit buses in its survey run on an alternative fuel. Furthermore, 1 in 5 of the new transit buses that members have on order are alternative fuel buses. This program was designed to comprehensively and objectively evaluate the alternative fuels in use in the industry.

Motta, R.; Norton, P.; Kelly, K. [and others

1996-10-01T23:59:59.000Z

293

Oligocyclopentadienyl transition metal complexes  

SciTech Connect (OSTI)

Synthesis, characterization, and reactivity studies of oligocyclopentadienyl transition metal complexes, namely those of fulvalene, tercyclopentadienyl, quatercyclopentadienyl, and pentacyclopentadienyl(cyclopentadienyl) are the subject of this account. Thermal-, photo-, and redox chemistries of homo- and heteropolynuclear complexes are described.

de Azevedo, Cristina G.; Vollhardt, K. Peter C.

2002-01-18T23:59:59.000Z

294

System Design | Department of Energy  

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

System Design System Design This template is used to define the system design System Design More Documents & Publications Transition Plan Training Plan Feasibility Study Report...

295

MEASUREMENTS OF STELLAR INCLINATIONS FOR KEPLER PLANET CANDIDATES. II. CANDIDATE SPIN-ORBIT MISALIGNMENTS IN SINGLE- AND MULTIPLE-TRANSITING SYSTEMS  

E-Print Network [OSTI]

We present a test for spin-orbit alignment for the host stars of 25 candidate planetary systems detected by the Kepler spacecraft. The inclination angle of each star's rotation axis was estimated from its rotation period, ...

Hirano, Teruyuki

296

Structural phase transitions in low-dimensional ion crystals  

Science Journals Connector (OSTI)

A chain of singly charged particles, confined by a harmonic potential, exhibits a sudden transition to a zigzag configuration when the radial potential reaches a critical value, depending on the particle number. This structural change is a phase transition of second order, whose order parameter is the crystal displacement from the chain axis. We study analytically the transition using Landau theory and find full agreement with numerical predictions by Schiffer [Phys. Rev. Lett. 70, 818 (1993)] and Piacente et al. [Phys. Rev. B 69, 045324 (2004)]. Our theory allows us to determine analytically the system’s behavior at the transition point.

Shmuel Fishman; Gabriele De Chiara; Tommaso Calarco; Giovanna Morigi

2008-02-25T23:59:59.000Z

297

Technology roadmaps for transition management: The case of hydrogen energy  

Science Journals Connector (OSTI)

Technology roadmaps are increasingly used by governments to inform and promote technological transitions, such as a transition to a hydrogen energy system. This paper develops a framework for understanding how current roadmapping practice relates to emerging theories of the governance of systems innovation. In applying this framework to a case study of hydrogen roadmaps, the paper finds that roadmapping for transitions needs to place greater emphasis on ensuring good quality and transparent analytic and participatory procedures. To be most useful, roadmaps should be embedded within institutional structures that enable the incorporation of learning and re-evaluation, but in practice most transition roadmaps are one-off exercises.

Will McDowall

2012-01-01T23:59:59.000Z

298

Approximating Metal-Insulator Transitions  

E-Print Network [OSTI]

We consider quantum wave propagation in one-dimensional quasiperiodic lattices. We propose an iterative construction of quasiperiodic potentials from sequences of potentials with increasing spatial period. At each finite iteration step the eigenstates reflect the properties of the limiting quasiperiodic potential properties up to a controlled maximum system size. We then observe approximate metal-insulator transitions (MIT) at the finite iteration steps. We also report evidence on mobility edges which are at variance to the celebrated Aubry-Andre model. The dynamics near the MIT shows a critical slowing down of the ballistic group velocity in the metallic phase similar to the divergence of the localization length in the insulating phase.

C. Danieli; K. Rayanov; B. Pavlov; G. Martin; S. Flach

2014-05-06T23:59:59.000Z

299

Bus Rapid Transit Planning Guide | Open Energy Information  

Open Energy Info (EERE)

Bus Rapid Transit Planning Guide Bus Rapid Transit Planning Guide Jump to: navigation, search Tool Summary Name: Bus Rapid Transit Planning Guide Agency/Company /Organization: Institute for Transportation & Development Policy Focus Area: Public Transit & Infrastructure Topics: Best Practices Resource Type: Reports, Journal Articles, & Tools Website: www.itdp.org/microsites/bus-rapid-transit-planning-guide/ The Bus Rapid Transit Planning Guide is the most comprehensive resource for planning a bus rapid transit (BRT) system, beginning with project preparation all the way through to implementation. How to Use This Tool This tool is most helpful when using these strategies: Improve - Enhance infrastructure & policies Learn more about the avoid, shift, improve framework for limiting air

300

Rotational bands with identical transition energies in actinide nuclei  

SciTech Connect (OSTI)

We point out the existence of ground-state rotational bands with identical transition energies (up to spin 8{h bar}) in {sup 240}Pu, {sup 244}Cm, {sup 246}Cm, and {sup 250}Cf. The corresponding transitions in the ground-state bands of {sup 236}U and {sup 238}U have identical energies (within {similar to}2 keV) up to spin 24{h bar}. These features are very similar to those recently observed for superdeformed bands in the mass-150 and mass-190 regions and suggest that the phenomenon of identical bands is not restricted to superdeformed bands.

Ahmad, I.; Carpenter, M.P.; Chasman, R.R.; Janssens, R.V.F.; Khoo, T.L. (Argonne National Laboratory, Argonne, Illinois (USA))

1991-09-01T23:59:59.000Z

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


301

The Solar Transitions research on solar mini-grids in India: Learning from local cases of innovative socio-technical systems  

Science Journals Connector (OSTI)

The article presents new empirical material from a case study on longstanding, pioneering efforts on implementation and use of solar mini-grid systems in the Sunderban Islands in India. These local, socio-technical experiments have been investigated by a trans-disciplinary team of researchers and practitioners in order to gain a deep understanding of the diversity of social and technical factors influencing the ways in which the systems work at different levels. This socio-technical research highlights the dynamics between technology and society and how they are mutually influencing and shaping each other. These dynamics create gradual changes in the socio-technical system of technical devises, people, practices, knowledge and other elements, requiring adjustments also by the implementing actors. A range of technical and non-technical factors at various levels are found to be relevant for the implementation, operation, sustenance and further development of the solar power supply systems. The research points to important factors that should be taken into account and considered when planning similar activities. In addition to the analysis of the research findings, the article includes a brief review of literature on the implementation and use of solar photovoltaic technology in developing countries, with an emphasis on solar mini-grid systems.

Kirsten Ulsrud; Tanja Winther; Debajit Palit; Harald Rohracher; Jonas Sandgren

2011-01-01T23:59:59.000Z

302

Transit marketing in Pennsylvania: a handbook of effective transit-marketing aids (revised edition)  

SciTech Connect (OSTI)

The report provides an overview of the range of marketing approaches that can be used by smaller transit systems. The majority of the techniques described deal with providing user information (such as time-tables, maps, and transit-education programs), and promotion and advertising (such as newspapers and radio advertising, press releases, and billboards). The document does include some information on fares, service planning and development, public relations, and promotional campaigns. Each technique is illustrated with one or more examples from within Pennsylvania. The document should be of particular interest to transit managers of smaller properties and their marketing staffs.

Not Available

1984-08-01T23:59:59.000Z

303

Certificate in Transit Management and  

E-Print Network [OSTI]

Certificate in Transit Management and Operations UMass Transit, in partnership with the UMass Transportation Center and CTTransit, are pleased to offer "A Certificate in Transit Management and Operations Engineering and the School of Management - Internships with UMass Transit and CTTransit - A summer workshop

Massachusetts at Amherst, University of

304

Certificate in Transit Management and  

E-Print Network [OSTI]

Certificate in Transit Management and Operations UMass Transit, in partnership with the UMass Transportation Center and CTTransit, are pleased to offer "A Certificate in Transit Management and Operations contract to provide transit management services in Hartford and other cities in Connecticut. CTTRANSIT

Massachusetts at Amherst, University of

305

Transition from L1 to L2 in a ternary system (OBS-pentanol-water): a borderline case between continuous and discontinuous  

E-Print Network [OSTI]

domains. It also shows a small triphasic region which, usually, is rather typical of disconnected L1 and L, stabilized by surfactant mole- cules which stand at the interface separating the water from the oil are separated by the LLC domain. Fig. 2. - Phase diagram for the system under study at T = 25 °C, (a) general

Boyer, Edmond

306

Mass Spectrometer: Orbitrap | EMSL  

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

Software (ISIS): A Machine Learning Approach to Tandem Mass Spectral Identification of Lipids. Liquid chromatography-mass spectrometry-based metabolomics has gained importance...

307

Functionalized Silicone Nanospheres: Synthesis, Transition Metal...  

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

Functionalized Silicone Nanospheres: Synthesis, Transition Metal Immobilization, and Catalytic Applications. Functionalized Silicone Nanospheres: Synthesis, Transition Metal...

308

site_transition.cdr  

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

Legacy Legacy Management U.S. DEPARTMENT OF This fact sheet explains the process for transferring a site to the U.S. Department of Energy Office of Legacy Management. Site Transition Process Upon Cleanup Completion Introduction Transition Process After environmental remediation is completed at a site and there is no continuing mission, responsibility for the site and the associated records are transferred to the U.S. Department of Energy (DOE) Office of Legacy Management for post-closure management. Where residual hazards (e.g., disposal cells, ground water contamination) remain, active long-term surveillance and maintenance will be required to ensure protection of human health and the environment. The DOE Office of Legacy Management (LM) established transition guidance for remediated sites that will transfer to LM for long-term surveillance and maintenance. The

309

Observables in Neutrino Mass Spectroscopy Using Atoms  

E-Print Network [OSTI]

The process of collective de-excitation of atoms in a metastable level into emission mode of a single photon plus a neutrino pair, called radiative emission of neutrino pair (RENP), is sensitive to the absolute neutrino mass scale, to the neutrino mass hierarchy and to the nature (Dirac or Majorana) of massive neutrinos. We investigate how the indicated neutrino mass and mixing observables can be determined from the measurement of the corresponding continuous photon spectrum taking the example of a transition between specific levels of the Yb atom. The possibility of determining the nature of massive neutrinos and, if neutrinos are Majorana fermions, of obtaining information about the Majorana phases in the neutrino mixing matrix, is analyzed in the cases of normal hierarchical, inverted hierarchical and quasi-degenerate types of neutrino mass spectrum. We find, in particular, that the sensitivity to the nature of massive neutrinos depends critically on the atomic level energy difference relevant in the RENP.

D. N. Dinh; S. T. Petcov; N. Sasao; M. Tanaka; M. Yoshimura

2012-09-21T23:59:59.000Z

310

Secondary Phi-Meson Peak as an Indicator of a Qcd Phase-Transition in Ultrarelativistic Heavy-Ion Collisions  

E-Print Network [OSTI]

PHYSICAL REVIEW C VOLUME 50, NUMBER 6 DECEMBER 1994 Secondary phi meson peak as an indicator of a +CD phase transition in ultrarelativistic heavy-ion collisions M. Asakawa* Nuclear Science Division, MS 70A $80-7, Laurrence Berkeley Laboratory... invariant mass spectrum if a first order /CD phase transition occurs in ultrarelativistic heavy- ion collisions. Furthermore, the transition temperature can be determined from the transverse momentum distribution of the low mass phi peak. In this work, we...

Asakawa, M.; Ko, Che Ming.

1994-01-01T23:59:59.000Z

311

Recent Transitions in Ethiopian Homegarden Agroforestry: Driving  

E-Print Network [OSTI]

of the system dynamics shows that all underlying driving forces interact with each other and cause change, shrinking farm size, poverty and a new market situation and has gradually been changing towards monoculture production of khat (Catha edulis) and eucalyptus species. The consequence of the transitions on ecology

312

Mass spectrometric immunoassay  

DOE Patents [OSTI]

Rapid mass spectrometric immunoassay methods for detecting and/or quantifying antibody and antigen analytes utilizing affinity capture to isolate the analytes and internal reference species (for quantification) followed by mass spectrometric analysis of the isolated analyte/internal reference species. Quantification is obtained by normalizing and calibrating obtained mass spectrum against the mass spectrum obtained for an antibody/antigen of known concentration.

Nelson, Randall W; Williams, Peter; Krone, Jennifer Reeve

2013-07-16T23:59:59.000Z

313

Mass spectrometric immunoassay  

DOE Patents [OSTI]

Rapid mass spectrometric immunoassay methods for detecting and/or quantifying antibody and antigen analytes utilizing affinity capture to isolate the analytes and internal reference species (for quantification) followed by mass spectrometric analysis of the isolated analyte/internal reference species. Quantification is obtained by normalizing and calibrating obtained mass spectrum against the mass spectrum obtained for an antibody/antigen of known concentration.

Nelson, Randall W (Phoenix, AZ); Williams, Peter (Phoenix, AZ); Krone, Jennifer Reeve (Granbury, TX)

2007-12-04T23:59:59.000Z

314

The Rossiter-McLaughlin Effect of the Transiting Exoplanet XO-4b  

E-Print Network [OSTI]

We report photometric and radial velocity observations of the XO-4 transiting planetary system, conducted with the FLWO 1.2 m telescope and the 8.2 m Subaru Telescope. Based on the new light curves, the refined transit ...

Narita, Norio

315

Supercritical Stability, Transitions, and (Pseudo)tachyons  

SciTech Connect (OSTI)

Highly supercritical strings (c >> 15) with a time-like linear dilaton provide a large class of solutions to string theory, in which closed string tachyon condensation is under control (and follows the worldsheet renormalization group flow). In this note we analyze the late-time stability of such backgrounds, including transitions between them. The large friction introduced by the rolling dilaton and the rapid decrease of the string coupling suppress the back-reaction of naive instabilities. In particular, although the graviton, dilaton, and other light fields have negative effective mass squared in the linear dilaton background, the decaying string coupling ensures that their condensation does not cause large back-reaction. Similarly, the copious particles produced in transitions between highly supercritical theories do not back-react significantly on the solution. We discuss these features also in a somewhat more general class of time-dependent backgrounds with stable late-time asymptotics.

Aharony, Ofer; Silverstein, Eva

2007-01-03T23:59:59.000Z

316

The Age and The Mass of The \\alpha Herculis Triple-Star System From A MESA Grid of rotating stars with 1.3 <= M/Msun <= 8.0  

E-Print Network [OSTI]

\\alpha^1 Her is the second closest Asymptotic Giant Branch (AGB) star to the Sun, and the variable luminous M5 Ib-II member of a triple stellar system containing G8 III and A9 IV-V components. However, the mass of this important star was previously uncertain with published values ranging from ~2 - 15 Msun. As shown by this study, its fortuitous membership in a nearby resolved triple star system, makes it possible to determine its fundamental properties including its mass and age. We present over twenty years of VRI photometry of \\alpha^1 Her as well as Wing intermediate-band near-IR TiO and NIR continuum photometry. We introduce a new photometry-based calibration technique, and extract the effective temperature and luminosity of \\alpha^1 Her, in agreement with recent interferometric measures. We find, Teff=3280 +/- 87 K and log(L/Lsun)=3.92 +/- 0.14. With the MESA code, we calculate a dense grid of evolutionary tracks for Galactic low- to intermediate-mass (1.3 to 8 Msun) rotating stars from the pre-main sequ...

Moravveji, Ehsan; Khosroshahi, Habib G; Wasatonic, Rick

2013-01-01T23:59:59.000Z

317

Multicenter Evaluation of the Vitek MS Matrix-Assisted Laser Desorption Ionization–Time of Flight Mass Spectrometry System for Identification of Gram-Positive Aerobic Bacteria  

Science Journals Connector (OSTI)

...Perman, and G Gilbert. 1995. The...WalkAway diagnostic microbiology system-an...the clinical microbiology laboratory...Perman M, Gilbert G. 1995. The...WalkAway diagnostic microbiology system--an...

Jenna Rychert; Carey-Ann D. Burnham; Maureen Bythrow; Omai B. Garner; Christine C. Ginocchio; Rebecca Jennemann; Michael A. Lewinski; Ryhana Manji; A. Brian Mochon; Gary W. Procop; Sandra S. Richter; Linda Sercia; Lars F. Westblade; Mary Jane Ferraro; John A. Branda

2013-05-08T23:59:59.000Z

318

Transition Implementation Guide  

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

This Guide was prepared to aid in the development, planning, and implementation of requirements and activities during the transition phase at Department of Energy (DOE) facilities that have been declared or are forecast to become excess to any future mission requirements.

2001-04-24T23:59:59.000Z

319

Variational transition state theory  

SciTech Connect (OSTI)

This research program involves the development of variational transition state theory (VTST) and semiclassical tunneling methods for the calculation of gas-phase reaction rates and selected applications. The applications are selected for their fundamental interest and/or their relevance to combustion.

Truhlar, D.G. [Univ. of Minnesota, Minneapolis (United States)

1993-12-01T23:59:59.000Z

320

Stochastic dynamo model for subcritical transition Sergei Fedotov,1,  

E-Print Network [OSTI]

Stochastic dynamo model for subcritical transition Sergei Fedotov,1, * Irina Bashkirtseva,2 and Lev a "slow" variable that determines the global evolution of the non-normal -dynamo system in the subcritical,2 . It explains the subcritical transition to turbulence when the laminar flow changes to a turbulent regime

Fedotov, Sergei

Note: This page contains sample records for the topic "mass transit systems" 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

The Glass Transition in Fluids with Magnetic Interactions  

E-Print Network [OSTI]

We study the glass transition in fluids where particles are endowed with spins, such that magnetic and positional degrees of freedom are coupled. Novel results for slowing down in the spin time-correlation functions are described, and the effects of magnetic fields on the glass transition are studied. Aging effects in such systems and the corresponding data collapse are presented and discussed.

Ricardo Gutierrez; Bhaskar Sen Gupta; Itamar Procaccia

2014-06-15T23:59:59.000Z

322

Advanced Methods Approach to Hybrid Powertrain Systems Optimization...  

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

Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus Application Advanced Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus...

323

Structural phase transitions in low-dimensional ion crystals  

E-Print Network [OSTI]

A chain of singly-charged particles, confined by a harmonic potential, exhibits a sudden transition to a zigzag configuration when the radial potential reaches a critical value, depending on the particle number. This structural change is a phase transition of second order, whose order parameter is the crystal displacement from the chain axis. We study analytically the transition using Landau theory and find full agreement with numerical predictions by [J. Schiffer Phys. Rev. Lett. 70, 818 (1993)] and [Piacente et al Phys. Rev. B 69, 045324 (2004)]. Our theory allows us to determine analytically the system's behaviour at the transition point.

Shmuel Fishman; Gabriele De Chiara; Tommaso Calarco; Giovanna Morigi

2007-10-09T23:59:59.000Z

324

Are red 2MASS QSOs young?  

E-Print Network [OSTI]

We use photometric data from Spitzer to explore the mid- and far-IR properties of 10 red QSOs (J-K>2, R-K>5) selected by combining the 2MASS in the NIR with the SDSS at optical wavelengths. Optical and/or near-infrared spectra are available for 8/10 sources. Modeling the SED from UV to far-IR shows that moderate dust reddening (A_V=1.3-3.2) can explain the red optical and near-IR colours of the sources in the sample. There is also evidence that red QSOs have 60/12micron luminosity ratio higher than PG QSOs (97% significance). This can be interpreted as a higher level of star-formation in these systems (measured by the 60micron luminosity) for a given AGN power (approximated by the 12micron luminosity). This is consistent with a picture where red QSOs represent an early phase of AGN evolution, when the supermassive black hole is enshrouded in dust and gas clouds, which will eventually be blown out (possibly by AGN driven outflows) and the system will appear as typical optically luminous QSO. There is also tentative evidence significant at the 96% level that red 2MASS QSOs are more often associated with radio emission than optically selected SDSS QSOs. This may indicate outflows, also consistent with the young AGN interpretation. We also estimate the space density of red QSOs relative to optically selected SDSS QSOs, taking into account the effect of dust extinction and the intrinsic luminosity of the sources. We estimate that the fraction of red QSOs in the overall population increases from 3% at M_K=-27.5mag to 12% at M_K=-29.5mag. This suggests that reddened QSOs become more important at the bright end of the Luminosity Function. If red QSOs are transition objects on the way to becoming typical optically luminous QSOs, the low fractions above suggest that these systems spent <12% of their lifetime at the "reddened" stage.

A. Georgakakis; D. L. Clements; G. Bendo; M. Rowan-Robinson; K. Nandra; M. S. Brotherton

2008-12-10T23:59:59.000Z

325

Enrichment of the dust-to-gas mass ratio in Bondi/Jeans accretion/cloud systems due to unequal changes in dust and gas incoming velocities  

E-Print Network [OSTI]

The ratio of the Bondi and Jeans lengths is used to develop a cloud-accretion model that describes both an inner Bondi-type regime where gas pressure is balanced by the gravity of a central star and an outer Jeans-type regime where gas pressure is balanced by gas self-gravity. The gas density profile provided by this model makes a smooth transition from a wind-type inner solution to a Bonnor-Ebert type outer solution. It is shown that high-velocity dust impinging on this cloud will tend to pile-up due to having a different velocity profile than gas so that the dust-to-gas ratio is substantially enriched above the 1% ISM level.

P. M. Bellan

2008-01-27T23:59:59.000Z

326

Kosterlitz-Thouless Transition in Helium Films  

E-Print Network [OSTI]

and the Materials Science Center, Cornell University, Ithaca, Xetv York 14853 (Received 4 November 1988) The superAuid response of helium Alms with transition temperatures ranging from 70 mK to 0.5 K has been studied using a torsional oscillator technique. A... KOSTERLITZ- THOULESS TRANSITION IN. . . 8935 =n ~Koln(R/ro)+E, (T), (1.2) where R is the size of the system and Ko =p, o( T)(A'/m) . In the above expression the core radius ro serves to cut off the divergence of the flow fields at small distances...

Agnolet, Glenn; MCQUEENEY, DF; REPPY, JD.

1989-01-01T23:59:59.000Z

327

Dynamical cluster-decay model for hot and rotating light-mass nuclear systems, applied to low-energy $^{32}$S + $^{24}$Mg $\\to ^{56}$Ni reaction  

E-Print Network [OSTI]

The dynamical cluster-decay model (DCM) is developed further for the decay of hot and rotating compound nuclei (CN) formed in light heavy-ion reactions. The model is worked out in terms of only one parameter, namely the neck-length parameter, which is related to the total kinetic energy TKE(T) or effective Q-value $Q_{eff}(T)$ at temperature T of the hot CN, defined in terms of the both the light-particles (LP), with $A \\leq$ 4, Z $\\leq$ 2, as well as the complex intermediate mass fragments (IMF), with $4 2$, is considered as the dynamical collective mass motion of preformed clusters through the barrier. Within the same dynamical model treatment, the LPs are shown to have different characteristics as compared to the IMFs. The systematic variation of the LP emission cross section $\\sigma_{LP}$, and IMF emission cross section $\\sigma_{IMF}$, calculated on the present DCM match exactly the statistical fission model predictions. It is for the first time that a non-statistical dynamical description is developed for the emission of light-particles from the hot and rotating CN. The model is applied to the decay of $^{56}$Ni formed in the $^{32}$S + $^{24}$Mg reaction at two incident energies E$_{c.m.}$ = 51.6 and 60.5 MeV. Both the IMFs and average $\\bar{TKE}$ spectra are found to compare reasonably nicely with the experimental data, favoring asymmetric mass distributions. The LPs emission cross section is shown to depend strongly on the type of emitted particles and their multiplicities.

Raj K. Gupta; M. Balasubramaniam; Rajesh Kumar; Dalip Singh; C. Beck; W. Greiner

2004-10-11T23:59:59.000Z

328

Alternative Fuel Transit Buses  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

35th St. Craig Ave. Alt Blvd. Colucci Pkwy. Final Results from the National Renewable Energy Laboratory Vehicle Evaluation Program Final Results from the National Renewable Energy Laboratory Vehicle Evaluation Program N T Y A U E O F E N E R G D E P A R T M E N I T E D S T A T S O F A E R I C M Produced for the U.S. Department of Energy (DOE) by the National Renewable Energy Laboratory (NREL), a U.S. DOE national laboratory Transit Buses Alternative Fuel Alternative Fuel Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program by Robert Motta, Paul Norton, and Kenneth Kelly, NREL Kevin Chandler, Battelle Leon Schumacher, University of Missouri Nigel Clark,West Virginia University October 1996 The authors wish to thank all the transit agencies that participated in this program.

329

Structural phase transitions and topological defects in ion Coulomb crystals  

Science Journals Connector (OSTI)

Abstract We use laser-cooled ion Coulomb crystals in the well-controlled environment of a harmonic radiofrequency ion trap to investigate phase transitions and defect formation. Topological defects in ion Coulomb crystals (kinks) have been recently proposed for studies of nonlinear physics with solitons and as carriers of quantum information. Defects form when a symmetry breaking phase transition is crossed nonadiabatically. For a second order phase transition, the Kibble–Zurek mechanism predicts that the formation of these defects follows a power law scaling in the rate of the transition. We demonstrate a scaling of defect density and describe kink dynamics and stability. We further discuss the implementation of mass defects and electric fields as first steps toward controlled kink preparation and manipulation.

Heather L. Partner; Ramil Nigmatullin; Tobias Burgermeister; Jonas Keller; Karsten Pyka; Martin B. Plenio; Alex Retzker; Wojciech H. Zurek; Adolfo del Campo; Tanja E. Mehlstäubler

2014-01-01T23:59:59.000Z

330

Structural phase transitions and topological defects in ion Coulomb crystals  

E-Print Network [OSTI]

We use laser-cooled ion Coulomb crystals in the well-controlled environment of a harmonic radiofrequency ion trap to investigate phase transitions and defect formation. Topological defects in ion Coulomb crystals (kinks) have been recently proposed for studies of nonlinear physics with solitons and as carriers of quantum information. Defects form when a symmetry breaking phase transition is crossed nonadiabatically. For a second order phase transition, the Kibble-Zurek mechanism predicts that the formation of these defects follows a power law scaling in the rate of the transition. We demonstrate a scaling of defect density and describe kink dynamics and stability. We further discuss the implementation of mass defects and electric fields as first steps toward controlled kink preparation and manipulation.

Heather L. Partner; Ramil Nigmatullin; Tobias Burgermeister; Jonas Keller; Karsten Pyka; Martin B. Plenio; Alex Retzker; Wojciech H. Zurek; Adolfo del Campo; Tanja E. Mehlstäubler

2014-11-19T23:59:59.000Z

331

Transition of Sites from Environmental Management Memorandum...  

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

Transition of Sites from Environmental Management Memorandum of Understanding Transition of Sites from Environmental Management Memorandum of Understanding Transition of Sites from...

332

Agent-Based Modeling and Simulation for Hydrogen Transition Analysis  

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

Agent Agent Agent - - Based Modeling Based Modeling and Simulation (ABMS) and Simulation (ABMS) for Hydrogen Transition for Hydrogen Transition Analysis Analysis Marianne Mintz Hydrogen Transition Analysis Workshop US Department of Energy January 26, 2006 Objectives and Scope for Phase 1 2 Analyze the hydrogen infrastructure development as a complex adaptive system using an agent-based modeling and simulation (ABMS) approach Develop an ABMS model to simulate the evolution of that system, spanning the entire H2 supply chain from production to consumption Identify key factors that either promote or inhibit the growth of H2 infrastructure Apply ABMS to get new insights into transition, particularly early transition phase - Dynamic interplay between supply and demand

333

Global Bus Rapid Transit (BRT) Database | Open Energy Information  

Open Energy Info (EERE)

Global Bus Rapid Transit (BRT) Database Global Bus Rapid Transit (BRT) Database Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Global Bus Rapid Transit (BRT) Database Agency/Company /Organization: EMBARQ Complexity/Ease of Use: Not Available Website: www.brtdata.org/ Equivalent URI: cleanenergysolutions.org/content/global-bus-rapid-transit-brt-database Language: English Related Tools European Green Cars Initiative Guidelines and Toolkits for Urban Transport Development in Medium Sized Cities in India Making Car Sharing and Car Clubs Work: Final Report ... further results Find Another Tool FIND TRANSPORTATION TOOLS This tool provides public access to current data about bus rapid transit systems around the world, including data for the design, performance, and cost of these systems. The database can be filtered by location or

334

Risks of the oil transition  

Science Journals Connector (OSTI)

The energy system is in the early stages of a transition from conventionally produced oil to a variety of substitutes, bringing economic, strategic, and environmental risks. We argue that these three challenges are inherently interconnected, and that as we act to manage one we cannot avoid affecting our prospects in dealing with the others. We further argue that without appropriate policies, tradeoffs between these risks are likely to be made so as to allow increased environmental disruption in return for increased economic and energy security. Responsible solutions involve developing and deploying environmentally acceptable energy technologies (both supply and demand) rapidly enough to replace dwindling conventional oil production and meet growing demand for transportation while diversifying supply to improve energy security.

A E Farrell; A R Brandt

2006-01-01T23:59:59.000Z

335

Transition to turbulence in ferrofluids  

E-Print Network [OSTI]

It is known that in classical fluids turbulence typically occurs at high Reynolds numbers. But can turbulence occur at low Reynolds numbers? Here we investigate the transition to turbulence in the classic Taylor-Couette system in which the rotating fluids are manufactured ferrofluids with magnetized nanoparticles embedded in liquid carriers. We find that, in the presence of a magnetic field turbulence can occur at Reynolds numbers that are at least one order of magnitude smaller than those in conventional fluids. This is established by extensive computational ferrohydrodynamics through a detailed bifurcation analysis and characterization of behaviors of physical quantities such as the energy, the wave number, and the angular momentum through the bifurcations. A striking finding is that, as the magnetic field is increased, the onset of turbulence can be determined accurately and reliably. Our results imply that experimental investigation of turbulence can be greatly facilitated by using ferrofluids, opening up...

Altmeyer, Sebastian; Lai, Ying-Cheng

2015-01-01T23:59:59.000Z

336

Privatization of transit in Yokohama : social and financial impacts  

E-Print Network [OSTI]

This research examines both social and financial impacts of the privatization of municipally-owned transit systems from the perspective of a privatizing city and its citizens by studying the case of Yokohama, Japan's second ...

Nakajima, Tsukihito

2007-01-01T23:59:59.000Z

337

Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Preliminary Evaluation Results  

SciTech Connect (OSTI)

This report provides an evaluation of three prototype fuel cell-powered transit buses operating at AC Transit in Oakland, California, and six baseline diesel buses similar in design to the fuel cell buses.

Chandler, K.; Eudy, L.

2007-03-01T23:59:59.000Z

338

Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Preliminary Evaluation Results  

Broader source: Energy.gov [DOE]

This report provides an evaluation of three prototype fuel cell-powered transit buses operating at AC Transit in Oakland, California, and six baseline diesel buses similar in design to the fuel cell buses.

339

Concerted Allosteric Transition Highlight  

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

combined use of x-ray crystallography and solution small angle x-ray scattering has enabled a research collaboration involving scientists from Boston College and SSRL to provide structural evidence supporting a 30-year old model accounting for the cooperative binding of ligands to allosteric proteins and enzymes - a function central to physiology and cellular processes. combined use of x-ray crystallography and solution small angle x-ray scattering has enabled a research collaboration involving scientists from Boston College and SSRL to provide structural evidence supporting a 30-year old model accounting for the cooperative binding of ligands to allosteric proteins and enzymes - a function central to physiology and cellular processes. Over 30 years ago, two major models were developed to account for the cooperativity observed in oligomeric allosteric proteins such as hemoglobin, the oxygen carrier protein in blood: the concerted model, in which a protein has only two ”all-or-none” global states, vs. the sequential model that allows a number of different global conformational/energy states. Both, however, are based on just two local states of building blocks (subunits) in close analogy to magnetic spin states. In either model, a transition of one or more protein subunits leads to the global transition, in the case of hemoglobin, from the oxygen-releasing form to the oxygen-binding form, depending on the oxygen level in the blood stream. The concerted model, based on highly positive cooperativity, resembles the ferromagnetic phase transition, in which only two spin states account for the sharp phase transition between two global states. The sequential model, on the other hand, permits mixture of active and inactive subunits. Macol et al., constructed a version of an allosteric enzyme E. coli aspartate transcarbamoylase, which is composed of six equivalent catalytic monomers and six equivalent regulatory monomers in its native form, in such a way that only one of the six catalytic monomers could bind a substrate analog. Using solution x-ray scattering data recorded at BL4-2 to monitor the global structural state, they provided the first structural evidence that the transition of only one catalytic monomer is sufficient to transform the entire enzyme into the highly active state, lending strong support to the concerted model.

340

EMSL - Mass Spectrometry  

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

mass-spectrometry Proteomics Capabilities High resolution and mass accuracy Fourier-transform ion cyclotron resonance (FT-ICR) spectrometers, from 6 Tesla (T) to 15T and 21T in...

Note: This page contains sample records for the topic "mass transit systems" 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

mass communication advertising &  

E-Print Network [OSTI]

mass communication advertising & public relations introduction. Graduate programs in the Department of Mass Communication, Advertising, and Public Relations provide an entry to a wide spectrum of careers the opportunity to create content, campaigns, strategy, and research in public relations, advertising

Finzi, Adrien

342

Predicted intensities for new Raman transitions in solid HD  

Science Journals Connector (OSTI)

The scattering efficiencies for the zero-phonon and phonon branches associated with predicted new Raman transitions in solid HD are calculated. These transitions arise from the interaction-induced polarizability of a pair of molecules expressed in terms of the vector separation between the centers of mass and satisfy different rotational selection rules from those of allowed Raman transitions. For single transitions in which only one molecule of the pair is excited by the incoming photon, one expects an R branch, while, for double transitions in which both molecules are excited, one expects R+S and T+S branches with progressively less intensity. A previously obtained experimental Raman spectrum of solid HD does have spectral features similar in shape and intensity to those predicted for the RR phonon branch, although this feature was tentatively assigned as a two-phonon Raman-active transition. We conclude that a new Raman study of solid HD carried out with higher sensitivity and over a greater frequency region would be of interest to determine the correct assignment of this feature and to look for other predicted transitions resulting from the interaction-induced polarizability.

M. Attia; M. Ali; R. H. Tipping; J. D. Poll

1989-11-01T23:59:59.000Z

343

Elbow mass flow meter  

DOE Patents [OSTI]

Elbow mass flow meter. The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity.

McFarland, Andrew R. (College Station, TX); Rodgers, John C. (Santa Fe, NM); Ortiz, Carlos A. (Bryan, TX); Nelson, David C. (Santa Fe, NM)

1994-01-01T23:59:59.000Z

344

Leveraging bus rapid transit lite for transit corridor development : Springfield Avenue and Bloomfield Avenue in Newark NJ  

E-Print Network [OSTI]

The construction of bus rapid transit lite (BRT lite) systems on Springfield Avenue and Bloomfield Avenue in Newark is assumed to provide lower travel times and improved reliability of service to local and regional economic ...

Kintala, Kumar

2008-01-01T23:59:59.000Z

345

Quasi-energy-independent solar neutrino transitions  

E-Print Network [OSTI]

Current solar, atmospheric, and reactor neutrino data still allow oscillation scenarios where the squared mass differences are all close to 10^-3 eV^2, rather than being hierarchically separated. For solar neutrinos, this situation (realized in the upper part of the so-called large-mixing angle solution) implies adiabatic transitions which depend weakly on the neutrino energy and on the matter density, as well as on the ``atmospheric'' squared mass difference. In such a regime of ``quasi-energy-independent'' (QEI) transitions, intermediate between the more familiar ``Mikheyev-Smirnov-Wolfenstein'' (MSW) and energy-independent (EI) regimes, we first perform analytical calculations of the solar nu_e survival probability at first order in the matter density, beyond the usual hierarchical approximations. We then provide accurate, generalized expressions for the solar neutrino mixing angles in matter, which reduce to those valid in the MSW, QEI and EI regimes in appropriate limits. Finally, a representative QEI scenario is discussed in some detail.

G. L. Fogli; E. Lisi; A. Palazzo

2001-05-09T23:59:59.000Z

346

Corrosion behavior of mesoporous transition metal nitrides  

SciTech Connect (OSTI)

Transition metal nitrides (TMN) have many desirable characteristics such as high hardness and good thermal stability under reducing conditions. This work reports an initial survey of the chemical stability of mesoporous TMNs (TM=Nb, V, Cr and Ti) in water at 80 °C at neutral, acidic and alkaline pH. The mesoporous TMNs had specific surface areas of 25–60 m{sup 2}/g with average pore sizes ranging from 10 to 50 nm. The high surface areas of these materials enhance the rate of corrosion per unit mass over that of a bulk material, making detection of corrosion much easier. The products were characterized by Rietveld refinement of powder X-ray diffraction (PXRD) patterns and by scanning electron microscopy (SEM). Several nitrides have corrosion rates that are, within error, not distinguishable from zero (±1 Å/day). Of the nitrides examined, CrN appears to be the most corrosion resistant under acidic conditions. None of the nitrides studied are corrosion resistant under alkaline conditions. - Graphical abstract: Corrosion behavior of mesoporous transition metal nitrides (TM=Nb, V, Cr and Ti) in acidic and alkaline solutions at 80 °C for 2 weeks. Display Omitted - highlights: • Corrosion rates of mesoporous transition metal nitrides in aqueous solution is reported. • The mesoporous TMNs had surface areas of 25–60 m{sup 2}/g. • CrN is the most corrosion resistant under the conditions studied.

Yang, Minghui, E-mail: m.yang@cornell.edu [Department of Chemistry, Cornell University, Ithaca 14853-1301, NY (United States); Allen, Amy J.; Nguyen, Minh T. [Department of Chemistry, Cornell University, Ithaca 14853-1301, NY (United States); Ralston, Walter T. [College of Chemistry, University of California, Berkeley 94720-1460, CA (United States); MacLeod, Michelle J. [Department of Chemistry, Massachusetts Institute of Technology, Cambridge 02139-4307, MA (United States); DiSalvo, Francis J., E-mail: fjd3@cornell.edu [Department of Chemistry, Cornell University, Ithaca 14853-1301, NY (United States)

2013-09-15T23:59:59.000Z

347

Transition Form Factor from CLAS  

SciTech Connect (OSTI)

The excitation of nucleon resonances in electromagnetic interaction has long been studied. The study of resonances helps us to understand the long- and short- range structures of the nucleon and its excited states in terms of quark confinement. While the existing data of the low-lying resonances are consistent with the well-studied SU(6) circle times operator O(3) constituent quark model classification, many open questions still remain. Exclusive electro-production is one of the best ways to investigate nucleon resonances. The exclusive electro-production process View the MathML source was measured in the photon virtuality range Q2 = 1.7 â 4.5 GeV2 and the invariant mass range for the n?+ system of W = 1.15 â 1.7 GeV using the CEBAF Large Acceptance Spectrometer. For the first time, these kinematics are probed in exclusive ?+ production from protons with nearly full coverage in the azimuthal and polar angles of the n?+ center-of-mass system. The n?+ channel has particular sensitivity t

Park, Kijun

2009-01-01T23:59:59.000Z

348

Rangeland Ecology & Management Spatially-explicit representation of state-and-transition models  

E-Print Network [OSTI]

Rangeland Ecology & Management Spatially-explicit representation of state-and-transition models state-and-transition models (STMs) to spatial units is a valuable management tool for structuring ground Manager® from Aries Systems Corporation #12;1 Spatially-Explicit Representation of State-and-Transition

349

Crossover transition in bag-like models  

SciTech Connect (OSTI)

We formulate a simple model for a gas of extended hadrons at zero chemical potential by taking inspiration from the compressible bag model. We show that a crossover transition qualitatively similar to lattice QCD can be reproduced by such a system by including some appropriate additional dynamics. Under certain conditions, at high temperature, the system consist of a finite number of infinitely extended bags,which occupy the entire space. In this situation the system behaves as an ideal gas of quarks and gluons.

Ferroni, Lorenzo; Koch, Volker

2009-03-13T23:59:59.000Z

350

Transition from inspiral to plunge for eccentric equatorial Kerr orbits  

E-Print Network [OSTI]

Ori and Thorne have discussed the duration and observability (with LISA) of the transition from circular, equatorial inspiral to plunge for stellar-mass objects into supermassive ($10^{5}-10^{8}M_{\\odot}$) Kerr black holes. We extend their computation to eccentric Kerr equatorial orbits. Even with orbital parameters near-exactly determined, we find that there is no universal length for the transition; rather, the length of the transition depends sensitively -- essentially randomly -- on initial conditions. Still, Ori and Thorne's zero-eccentricity results are essentially an upper bound on the length of eccentric transitions involving similar bodies (e.g., $a$ fixed). Hence the implications for observations are no better: if the massive body is $M=10^{6}M_{\\odot}$, the captured body has mass $m$, and the process occurs at distance $d$ from LISA, then $S/N \\lesssim (m/10 M_{\\odot})(1\\text{Gpc}/d)\\times O(1)$, with the precise constant depending on the black hole spin. For low-mass bodies ($m \\lesssim 7 M_\\odot$...

O'Shaughnessy, R

2003-01-01T23:59:59.000Z

351

Transition Strategies: Government Options and Market Penetration...  

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

Strategies: Government Options and Market Penetration Scenarios Transition Strategies: Government Options and Market Penetration Scenarios Presentation on Transition Strategies:...

352

NNSA, Argentina Transition Radiation Detection System | National...  

National Nuclear Security Administration (NNSA)

Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure...

353

Automobile Control Systems Transition from Controller Area  

E-Print Network [OSTI]

to concerns about the negative impacts of powering vehicles using fossil fuel and the future availability of fossil fuel, there has been an increased focus on electric vehicles. However, current electric vehicle a vehicle using Ethernet. Additionally, the use of Power over Ethernet can be used for powering some

Maguire Jr., Gerald Q.

354

Climate change mitigation through livestock system transitions  

Science Journals Connector (OSTI)

...projections from external energy models are used to drive...this paper, bioenergy demand projections the POLES...32) were used, where energy demand from biomass is disaggregated...between crop yields and GDP per capita developments. The relationship...

Petr Havlík; Hugo Valin; Mario Herrero; Michael Obersteiner; Erwin Schmid; Mariana C. Rufino; Aline Mosnier; Philip K. Thornton; Hannes Böttcher; Richard T. Conant; Stefan Frank; Steffen Fritz; Sabine Fuss; Florian Kraxner; An Notenbaert

2014-01-01T23:59:59.000Z

355

Climate change mitigation through livestock system transitions  

Science Journals Connector (OSTI)

...external energy models are used to drive the bioenergy supply. In this paper, bioenergy demand projections the POLES model (32) were...Lucia, St Vincent, Trinidad and Tobago RSAM Argentina, Bolivia, Chile, Colombia, Ecuador, Guyana...

Petr Havlík; Hugo Valin; Mario Herrero; Michael Obersteiner; Erwin Schmid; Mariana C. Rufino; Aline Mosnier; Philip K. Thornton; Hannes Böttcher; Richard T. Conant; Stefan Frank; Steffen Fritz; Sabine Fuss; Florian Kraxner; An Notenbaert

2014-01-01T23:59:59.000Z

356

AN UNDERSTANDING OF THE SHOULDER OF GIANTS: JOVIAN PLANETS AROUND LATE K DWARF STARS AND THE TREND WITH STELLAR MASS  

SciTech Connect (OSTI)

Analyses of exoplanet statistics suggest a trend of giant planet occurrence with host star mass, a clue to how planets like Jupiter form. One missing piece of the puzzle is the occurrence around late K dwarf stars (masses of 0.5-0.75 M{sub Sun} and effective temperatures of 3900-4800 K). We analyzed four years of Doppler radial velocity (RVs) data for 110 late K dwarfs, one of which hosts two previously reported giant planets. We estimate that 4.0% {+-} 2.3% of these stars have Saturn-mass or larger planets with orbital periods <245 days, depending on the planet mass distribution and RV variability of stars without giant planets. We also estimate that 0.7% {+-} 0.5% of similar stars observed by Kepler have giant planets. This Kepler rate is significantly (99% confidence) lower than that derived from our Doppler survey, but the difference vanishes if only the single Doppler system (HIP 57274) with completely resolved orbits is considered. The difference could also be explained by the exclusion of close binaries (without giant planets) from the Doppler but not Kepler surveys, the effect of long-period companions and stellar noise on the Doppler data, or an intrinsic difference between the two populations. Our estimates for late K dwarfs bridge those for solar-type stars and M dwarfs, and support a positive trend with stellar mass. Small sample size precludes statements about finer structure, e.g., a ''shoulder'' in the distribution of giant planets with stellar mass. Future surveys such as the Next Generation Transit Survey and the Transiting Exoplanet Satellite Survey will ameliorate this deficiency.

Gaidos, Eric [Department of Geology and Geophysics, University of Hawai'i at Manoa, Honolulu, HI 96822 (United States); Fischer, Debra A. [Department of Astronomy, Yale University, New Haven, CT 06520 (United States); Mann, Andrew W.; Howard, Andrew W., E-mail: gaidos@hawaii.edu [Institute for Astronomy, University of Hawai'i at Manoa, Honolulu, HI 96822 (United States)

2013-07-01T23:59:59.000Z

357

The global geochemical cycles of iron and calcium: using novel isotope systems to understand weathering, global mass budgets, natural reaction rates, and paleoclimate  

E-Print Network [OSTI]

. Traditional geochemical proxies utilize variations in the oxygen, carbon, and boron isotopic compositionThe global geochemical cycles of iron and calcium: using novel isotope systems to understand of California, Berkeley Spring 2005 #12;The global geochemical cycles of iron and calcium: using novel isotope

Fantle, Matthew

358

Male gender, increased blood viscosity, body mass index and triglyceride levels are independently associated with systemic relative hypertension in sickle cell anemia  

E-Print Network [OSTI]

are independently associated with systemic relative hypertension in sickle cell anemia Yann Lamarre1,2,3 *, Marie: 2931, 3 tables, 0 figure Key words: Sickle cell anemia, relative hypertension, blood viscosity, vaso.1371/journal.pone.0066004 #12;2 Abstract: Patients with sickle cell anemia (SCA) have usually lower

Boyer, Edmond

359

Microscale observables for heat and mass transport in sub-micron scale evaporating thin film  

E-Print Network [OSTI]

A mathematical model is developed to describe the micro/nano-scale fluid flow and heat/mass transfer phenomena in an evaporating extended meniscus, focusing on the transition film region under nonisothermal interfacial conditions. The model...

Wee, Sang-Kwon

2004-09-30T23:59:59.000Z

360

E-Print Network 3.0 - acton mass flow Sample Search Results  

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

systems from InPhotonics (Norwood, Mass.), Digilab (Randolph, Mass.), Enwave Optronics (Irvine, Calif... the output of the fiber onto the entrance slit of the large scale...

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


361

Connecticut Transit (CTTRANSIT) Fuel Cell Transit Bus: Third...  

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

Connecticut Transit (CTTRANSIT) in Hartford for one prototype fuel cell bus and three new diesel buses operating from the same location. The prototype fuel cell bus was...

362

Alameda-Contra Costa Transit District Fuel Cell Transit Buses...  

Office of Environmental Management (EM)

Results Update This report is an update to the 2007 preliminary results report on hydrogen fuel cell and diesel buses operating at Alameda-Contra Costa Transit District....

363

Holographic Polarons, the Metal-Insulator Transition and Massive Gravity  

E-Print Network [OSTI]

Massive gravity is holographically dual to `realistic' materials with momentum relaxation. The dual graviton potential encodes the phonon dynamics and it allows for a much broader diversity than considered so far. We construct a simple family of isotropic and homogeneous materials that exhibit an interaction-driven Metal-Insulator transition. The transition is triggered by the formation of polarons -- phonon-electron quasi-bound states that dominate the conductivities, shifting the spectral weight above a mass gap. We characterize the polaron gap, width and dispersion.

Baggioli, Matteo

2014-01-01T23:59:59.000Z

364

Holographic Polarons, the Metal-Insulator Transition and Massive Gravity  

E-Print Network [OSTI]

Massive gravity is holographically dual to `realistic' materials with momentum relaxation. The dual graviton potential encodes the phonon dynamics and it allows for a much broader diversity than considered so far. We construct a simple family of isotropic and homogeneous materials that exhibit an interaction-driven Metal-Insulator transition. The transition is triggered by the formation of polarons -- phonon-electron quasi-bound states that dominate the conductivities, shifting the spectral weight above a mass gap. We characterize the polaron gap, width and dispersion.

Matteo Baggioli; Oriol Pujolas

2014-11-04T23:59:59.000Z

365

Protecting high value assets in transit  

SciTech Connect (OSTI)

This paper reports that one of the most daunting tasks facing a security manager is how to protect classified or high value assets such as nuclear materials in transit, especially when the shipment is to be handled by a commercial carrier. There are many opportunities for an adversary to gain access to cargo shipments en route, including situations in which the cargo must be held in storage for weeks or even months. Standard commercial alarm systems are not suitable for use in containers subject to vibration or high and low temperature extremes, or situations in which national assets might be used to gain surreptitious access to the container and to defeat the alarm system. A new alarm monitoring system has been developed to provide a secure auditing system for use in rail cars, Conex containers, and other transportable containers. The system, referred to as the PEL-100, electronically supervises intrusion detection sensors mounted on or within a container, and records all intrusion attempts in a secure, solid state memory storage device. The security archive can be withdrawn and reviewed after the container has completed its travels, and will provide a complete audit trail of intrusion attempts in transit. The PEL-100 includes one of the most comprehensive security tamper systems ever fielded, and is intended to operate reliably and securely in an environment subject to vibration, EMI/RFI emissions, electronic spoofing, and physical manipulation. The unit provides a clear and unambiguous indication of tampering and includes a comprehensive internal security system to detect insider tampering.

Tennefoss, M. (Stellar Systems, Inc. (US))

1991-01-01T23:59:59.000Z

366

Bifurcation analysis and dimension reduction of a predator-prey model for the L-H transition  

SciTech Connect (OSTI)

The L-H transition denotes a shift to an improved confinement state of a toroidal plasma in a fusion reactor. A model of the L-H transition is required to simulate the time dependence of tokamak discharges that include the L-H transition. A 3-ODE predator-prey type model of the L-H transition is investigated with bifurcation theory of dynamical systems. The analysis shows that the model contains three types of transitions: an oscillating transition, a sharp transition with hysteresis, and a smooth transition. The model is recognized as a slow-fast system. A reduced 2-ODE model consisting of the full model restricted to the flow on the critical manifold is found to contain all the same dynamics as the full model. This means that all the dynamics in the system is essentially 2-dimensional, and a minimal model of the L-H transition could be a 2-ODE model.

Dam, Magnus; Brøns, Morten [Department of Applied Mathematics and Computer Science, Technical University of Denmark, DK-2800 Kgs. Lyngby (Denmark)] [Department of Applied Mathematics and Computer Science, Technical University of Denmark, DK-2800 Kgs. Lyngby (Denmark); Juul Rasmussen, Jens; Naulin, Volker [Association Euratom-DTU, Department of Physics, Technical University of Denmark, DTU Risø Campus, DK-4000 Roskilde (Denmark)] [Association Euratom-DTU, Department of Physics, Technical University of Denmark, DTU Risø Campus, DK-4000 Roskilde (Denmark); Xu, Guosheng [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)] [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)

2013-10-15T23:59:59.000Z

367

Mass-Production Cost Estimation for Automotive Fuel Cell Systems - DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report  

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

DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report Brian D. James (Primary Contact), Kevin Baum, Andrew B. Spisak, Whitney G. Colella Strategic Analysis, Inc. 4075 Wilson Blvd. Suite 200 Arlington VA 22203 Phone: (703) 778-7114 Email: bjames@sainc.com DOE Managers HQ: Jason Marcinkoski, Phone: (202) 586-7466 Email: Jason.Marcinkoski@ee.doe.gov GO: Gregory Kleen Phone: (720) 356-1672 Email: Gregory.Kleen@go.doe.gov Contract Number: DE-EE0005236 Project Start Date: September 30, 2011 Project End Date: September 30, 2016 Fiscal Year (FY) 2012 Objectives Update 2011 automotive fuel cell cost model to include * latest performance data and system design information. Examine costs of fuel cell systems (FCSs) for light-duty * vehicle and bus applications.

368

Development and Evaluation of a Test System for the Quality Assurance during the Mass Production of Silicon Microstrip Detector Modules for the CMS Experiment  

E-Print Network [OSTI]

The Compact Muon Solenoid (CMS) is one of four large-scale experiments that is going to be installed at the Large Hadron Collider (LHC) at the European Laboratory for Particle Physics (CERN). For CMS an inner tracking system entirely equipped with silicon microstrip detectors was chosen. With an active area of about 198 m2 it will be the largest tracking device of the world that was ever constructed using silicon sensors. The basic components in the construction of the tracking system are approximately 16,000 so-called modules, which are pre-assembled units consisting of the sensors, the readout electronics and a support structure. The module production is carried out by a cooperation of number of institutes and industrial companies. To ensure the operation of the modules within the harsh radiation environment extensive tests have to be performed on all components. An important contribution to the quality assurance of the modules is made by a test system of which all components were developed in Aachen. In ad...

Franke, Torsten

2005-01-01T23:59:59.000Z

369

Even more Oak Ridge transitions  

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

Even more Oak Ridge transitions The University of Chicago managed the Clinton Laboratories until July 1, 1945 when Monsanto Chemical Company took over operations. Charles A....

370

DOE Hydrogen Transition Analysis Workshop  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy sponsored a Hydrogen Transition Analysis Workshop in Washington, DC, on January 26, 2006. Attendees included automobile and energy company representatives, industrial...

371

IDEA Reauthorized Statute SECONDARY TRANSITION  

E-Print Network [OSTI]

to Kindergarten Age; Procedural Safeguards: Surrogates, Notice and Consent; Procedural Safeguards: Mediation and Resolution Sessions; Procedural Safeguards: Due Process Hearings; Secondary Transition; State Funding

372

PLANETARY CONSTRUCTION ZONES IN OCCULTATION: DISCOVERY OF AN EXTRASOLAR RING SYSTEM TRANSITING A YOUNG SUN-LIKE STAR AND FUTURE PROSPECTS FOR DETECTING ECLIPSES BY CIRCUMSECONDARY AND CIRCUMPLANETARY DISKS  

SciTech Connect (OSTI)

The large relative sizes of circumstellar and circumplanetary disks imply that they might be seen in eclipse in stellar light curves. We estimate that a survey of {approx}10{sup 4} young ({approx}10 million year old) post-accretion pre-main-sequence stars monitored for {approx}10 years should yield at least a few deep eclipses from circumplanetary disks and disks surrounding low-mass companion stars. We present photometric and spectroscopic data for a pre-main-sequence K5 star (1SWASP J140747.93-394542.6 = ASAS J140748-3945.7), a newly discovered {approx}0.9 M{sub Sun} member of the {approx}16 Myr old Upper Centaurus-Lupus subgroup of Sco-Cen at a kinematic distance of 128 {+-} 13 pc. This star exhibited a remarkably long, deep, and complex eclipse event centered on 2007 April 29 (as discovered in Super Wide Angle Search for Planets (SuperWASP) photometry, and with portions of the dimming confirmed by All Sky Automated Survey (ASAS) data). At least five multi-day dimming events of >0.5 mag are identified, with a >3.3 mag deep eclipse bracketed by two pairs of {approx}1 mag eclipses symmetrically occurring {+-}12 days and {+-}26 days before and after. Hence, significant dimming of the star was taking place on and off over at least a {approx}54 day period in 2007, and a strong >1 mag dimming event occurring over a {approx}12 day span. We place a firm lower limit on the period of 850 days (i.e., the orbital radius of the eclipser must be >1.7 AU and orbital velocity must be <22 km s{sup -1}). The shape of the light curve is similar to the lopsided eclipses of the Be star EE Cep. We suspect that this new star is being eclipsed by a low-mass object orbited by a dense inner disk, further girded by at least three dusty rings of optical depths near unity. Between these rings are at least two annuli of near-zero optical depth (i.e., gaps), possibly cleared out by planets or moons, depending on the nature of the secondary. For possible periods in the range 2.33-200 yr, the estimated total ring mass is {approx}8-0.4 M{sub Moon} (if the rings have optical opacity similar to Saturn's rings), and the edge of the outermost detected ring has orbital radius {approx}0.4-0.09 AU. In the new era of time-domain astronomy opened by surveys like SuperWASP, ASAS, etc., and soon to be revolutionized by Large Synoptic Survey Telescope, discovering and characterizing eclipses by circumplanetary and circumsecondary disks will provide us with observational constraints on the conditions that spawn satellite systems around gas giant planets and planetary systems around stars.

Mamajek, Eric E.; Quillen, Alice C.; Pecaut, Mark J.; Moolekamp, Fred; Scott, Erin L. [Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627-0171 (United States); Kenworthy, Matthew A. [Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands); Cameron, Andrew Collier; Parley, Neil R. [School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS (United Kingdom)

2012-03-15T23:59:59.000Z

373

Nuclear Masses in Astrophysics  

E-Print Network [OSTI]

Among all nuclear ground-state properties, atomic masses are highly specific for each particular combination of N and Z and the data obtained apply to a variety of physics topics. One of the most crucial questions to be addressed in mass spectrometry of unstable radionuclides is the one of understanding the processes of element formation in the Universe. To this end, accurate atomic mass values of a large number of exotic nuclei participating in nucleosynthesis are among the key input data in large-scale reaction network calculations. In this paper, a review on the latest achievements in mass spectrometry for nuclear astrophysics is given.

Christine Weber; Klaus Blaum; Hendrik Schatz

2008-12-09T23:59:59.000Z

374

EMSL - Mass Spectrometer  

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

mass-spectrometer en Physical Properties of Ambient and Laboratory-Generated Secondary Organic Aerosol. http:www.emsl.pnl.govemslwebpublicationsphysical-properties-ambient-and...

375

Connecticut Transit (CTTRANSIT) Fuel Cell Transit Bus: Preliminary Evaluation Results  

Broader source: Energy.gov [DOE]

This report provides preliminary results from the evaluation of a protoptye fuel cell transit bus operating at Connecticut Transit in Hartford. Included are descriptions of the planned fuel cell bus demonstration and equipment, early results and agency experience are also provided.

376

Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Third Evaluation Report  

Broader source: Energy.gov [DOE]

This report describes operations at Alameda-Contra Costa Transit district for three protoype fuel cell buses and six diesel buses operating from the same location.

377

Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Third Evaluation Report- Appendices  

Broader source: Energy.gov [DOE]

This report describes operations at Alameda-Contra Costa Transit district for three protoype fuel cell buses and six diesel buses operating from the same location.

378

Structural Transitions of Solvent-Free Oligomer-Grafted Nanoparticles  

Science Journals Connector (OSTI)

Novel structural transitions of solvent-free oligomer-grafted nanoparticles are investigated by using molecular dynamics simulations of a coarse-grained bead-spring model. Variations in core size and grafting density lead to self-assembly of the nanoparticles into a variety of distinct structures. At the boundaries between different structures, the nanoparticle systems undergo thermoreversible transitions. This structural behavior, which has not been previously reported, deviates significantly from that of simple liquids. The reversible nature of these transitions in solvent-free conditions offers new ways to control self-assembly of nanoparticles at experimentally accessible conditions.

Alexandros Chremos and Athanassios Z. Panagiotopoulos

2011-09-01T23:59:59.000Z

379

Elbow mass flow meter  

DOE Patents [OSTI]

The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity. 3 figs.

McFarland, A.R.; Rodgers, J.C.; Ortiz, C.A.; Nelson, D.C.

1994-08-16T23:59:59.000Z

380

The Origins of Mass  

SciTech Connect (OSTI)

The Higgs boson was discovered in July of 2012 and is generally understood to be the origin of mass. While those statements are true, they are incomplete. It turns out that the Higgs boson is responsible for only about 2% of the mass of ordinary matter. In this dramatic new video, Dr. Don Lincoln of Fermilab tells us the rest of the story.

Lincoln, Don

2014-07-30T23:59:59.000Z

Note: This page contains sample records for the topic "mass transit systems" 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

Gas Chromatography -Mass Spectrometry  

E-Print Network [OSTI]

GCMS - 1 Gas Chromatography - Mass Spectrometry GC-MS ANALYSIS OF ETHANOL AND BENZENE IN GASOLINE Last updated: June 17, 2014 #12;GCMS - 2 Gas Chromatography - Mass Spectrometry GC-MS ANALYSIS). The goal of this experiment is to separate the components in a sample of gasoline using Gas Chromatography

Nizkorodov, Sergey

382

E-Print Network 3.0 - al-zr-y system phase Sample Search Results  

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

transitions of quantum systems, and their connection to thermal phase transitions. 4. Ising chain... of Bose particle systems: superfluids and Mott insulators. 6. Quantum phases...

383

W Transverse Mass  

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

Some Data Analysis Some Data Analysis The Tevatron produces millions of collisions each second in CDF and DZero. The detectors have hardware triggers to decide if a collision is "interesting," that is it contains a candidate event for any one of a number studies. Our dataset contains 48,844 candidate events for a W mass study. There are other datasets to study Z mass, top and b quarks, QCD, etc. Why don't all the W decays give exactly the same mass? Are all these candidates really Ws? What if we chose only some of these data. How would our choice effect the value of the transverse mass? Work with your classmates. Test the data to see what you can learn. Help with data analysis. Record the best estimate of the W transverse mass from your data analysis. Explain which data you used and why. Check with your classmates and explain any differences between your estimate and theirs.

384

Managing Transition Cows Amanda Pellegrin  

E-Print Network [OSTI]

Managing Transition Cows Amanda Pellegrin Animal Nutrition winter 20009 Tisch, David. Animal Feeds://www.uky.edu/Ag/ Animal Sciences/dairy/ extension/nut00046.pdf. Works Cited Managng Transition Priod in Dairy Cattle Pasture management Pastures and hays comprised of leg- umes and legume-grass mixtures are good sources

Selmic, Sandra

385

Benchmarking a software transition process  

Science Journals Connector (OSTI)

Software transition is a strongly under-researched process as compared to other software lifecycle processes. Today, basic issues such as how and by whom software transition is performed are not clear enough. In this paper, we explore these issues by ... Keywords: deployment, handover, marketing, quality assurance, testing

Houssam Toufaili; Mira Kajko-Mattsson

2010-06-01T23:59:59.000Z

386

SunLine Transit Agency  

Broader source: Energy.gov [DOE]

SunLine Transit Agency provides public transit and community services to California's Coachella Valley. The service area is more than 1,100 square miles and includes nine member cities, as well as Riverside County. Over the years, SunLine has pursued an aggressive strategy for implementing clean technologies into its fleet.

387

Observing a Quantum Phase Transition by Measuring a Single Spin  

E-Print Network [OSTI]

We show that the ground-state quantum correlations of an Ising model can be detected by monitoring the time evolution of a single spin alone, and that the critical point of a quantum phase transition is detected through a maximum of a suitably defined observable. A proposed implementation with trapped ions realizes an experimental probe of quantum phase transitions which is based on quantum correlations and scalable for large system sizes.

Manuel Gessner; Michael Ramm; Hartmut Haeffner; Andreas Buchleitner; Heinz-Peter Breuer

2014-03-17T23:59:59.000Z

388

Fermion mass generation without a condensate  

E-Print Network [OSTI]

We study a lattice field theory model containing two flavors of massless staggered fermions with an onsite four-fermion interaction. The symmetry of the model forbids non-zero fermion bilinear order parameters that can generate a fermion mass. At weak couplings, we expect a massless fermion phase. At strong couplings, we can argue for the existence of massive fermions without the formation of any fermion bilinear condensate. Using Monte Carlo calculations in three space-time dimensions, we find evidence for a direct second order phase transition between the two phases.

Venkitesh Ayyar

2014-12-05T23:59:59.000Z

389

The Effect of Transition Region Heating on the Solar Wind from Coronal Holes  

Science Journals Connector (OSTI)

Using a 16 moment solar wind model extending from the chromosphere to 1 AU, we study how the solar wind is affected by direct deposition of energy in the transition region, in both radially expanding geometries and rapidly expanding coronal holes. Energy is required in the transition region to lift the plasma up to the corona, where additional coronal heating takes place. The amount of energy deposited determines the transition region pressure and the number of particles reaching the corona and, hence, how the solar wind energy flux is divided between gravitational potential and kinetic energy. We find that when only protons are heated perpendicularly to the magnetic field in a rapidly expanding coronal hole, the protons quickly become collisionless and therefore conduct very little energy into the transition region, leading to a wind much faster than what is observed. Only by additional deposition of energy in the transition region can a reasonable mass flux and flow speed at 1 AU be obtained. Radiative loss in the transition region is negligible in these low-mass flux solutions. In a radially expanding geometry the same form of coronal heating results in a downward heat flux to the transition region substantially larger than what is needed to heat the upwelling plasma, resulting in a higher transition region pressure, a slow, massive solar wind, and radiative loss playing a dominant role in the transition region energy budget. No additional energy input is needed in the transition region in this case. In the coronal hole geometry the solar wind response to transition region heating is highly nonlinear, and even a tiny input of energy can have a very large influence on the asymptotic properties of the wind. By contrast, the radially expanding wind is quite insensitive to additional deposition of energy in the transition region.

Øystein Lie-Svendsen; Viggo H. Hansteen; Egil Leer; Thomas E. Holzer

2002-01-01T23:59:59.000Z

390

Superfluid Transition in a Chiron Gas  

SciTech Connect (OSTI)

Low temperature measurements of the magnetic susceptibility of LSCO suggest that the superconducting transition is associated with the disappearance of a vortex liquid. In this note we wish to draw attention to the fact that spin-orbit-like interactions in a poorly conducting layered material can lead to a new type of quantum ground state with spin polarized soliton-like charge carriers as the important quantum degree of freedom. In 2-dimensions these solitons are vortex-like, while in 3-dimensional systems they are monopole-like. In either case there is a natural mechanism for the pairing of spin up and spin down solitons, and we find that at low temperatures there is a cross-over transition as a function of carrier density between a state where the solitons are free and a condensate state where the spin up and spin down solitons in neighboring layers are paired.

Chapline, G F

2007-12-10T23:59:59.000Z

391

Sharp Phase Transitions in a Small Frustrated Network of Trapped Ion Spins  

Science Journals Connector (OSTI)

Sharp quantum phase transitions typically require a large system with many particles. Here we show that, for a frustrated fully connected Ising spin network represented by trapped atomic ions, the competition between different spin orders leads to rich phase transitions whose sharpness scales exponentially with the number of spins. This unusual finite-size scaling behavior opens up the possibility of observing sharp quantum phase transitions in a system of just a few trapped ion spins.

G.-D. Lin; C. Monroe; L.-M. Duan

2011-06-08T23:59:59.000Z

392

Sharp phase transitions in a small frustrated network of trapped ion spins  

E-Print Network [OSTI]

Sharp quantum phase transitions typically require a large system with many particles. Here we show that for a frustrated fully-connected Ising spin network represented by trapped atomic ions, the competition between different spin orders leads to rich phase transitions whose sharpness scales exponentially with the number of spins. This unusual finite-size scaling behavior opens up the possibility of observing sharp quantum phase transitions in a system of just a few trapped ion spins.

G. -D. Lin; C. Monroe; L. -M. Duan

2010-11-25T23:59:59.000Z

393

Magnetism in Transition Metals  

Science Journals Connector (OSTI)

An attempt is made to distinguish "band-type magnetization" from "alignment-type magnetization" on the basis of whether the local moments associated with the Wannier functions on the atom sites are "induced" or "permanent." In general, the local moment is partially induced and partially permanent, and a criterion is suggested: A local moment is defined to be of the permanent variety if in the presence of magnetic forces (supposed characteristic of the crystal in a given circumstance) tending to produce a moment in one sense (z^, say) of a direction, it can maintain itself (perhaps altered in magnitude, however) in the opposite sense (-z^), as well as in z^. The internal mechanisms tending to produce permanent moments are simplified to just the Hcorr of Anderson, and the external inducing mechanism are the Heisenberg interaction and a magnetic field, Hspin, say. If Hcorr dominates Hspin, then it is shown that a local moment can maintain itself to the polarizing tendencies (whence an alignment type of magnetization calculation is appropriate), but if Hspin dominates Hcorr, then the local moment has only one sense possible in this environment (and a band type of calculation is appropriate). It is suggested that this distinction is relevant to transition metals.

M. Bailyn

1965-09-13T23:59:59.000Z

394

Portable gas chromatograph-mass spectrometer  

SciTech Connect (OSTI)

A gas chromatograph-mass spectrometer (GC-MS) for use as a field portable organic chemical analysis instrument. The GC-MS is designed to be contained in a standard size suitcase, weighs less than 70 pounds, and requires less than 600 watts of electrical power at peak power (all systems on). The GC-MS includes: a conduction heated, forced air cooled small bore capillary gas chromatograph, a small injector assembly, a self-contained ion/sorption pump vacuum system, a hydrogen supply, a dual computer system used to control the hardware and acquire spectrum data, and operational software used to control the pumping system and the gas chromatograph. This instrument incorporates a modified commercial quadrupole mass spectrometer to achieve the instrument sensitivity and mass resolution characteristic of laboratory bench top units.

Andresen, B.D.; Eckels, J.D.; Kimmins, J.F.; Myers, D.W.

1994-12-31T23:59:59.000Z

395

Portable gas chromatograph-mass spectrometer  

DOE Patents [OSTI]

A gas chromatograph-mass spectrometer (GC-MS) for use as a field portable organic chemical analysis instrument. The GC-MS is designed to be contained in a standard size suitcase, weighs less than 70 pounds, and requires less than 600 watts of electrical power at peak power (all systems on). The GC-MS includes: a conduction heated, forced air cooled small bore capillary gas chromatograph, a small injector assembly, a self-contained ion/sorption pump vacuum system, a hydrogen supply, a dual computer system used to control the hardware and acquire spectrum data, and operational software used to control the pumping system and the gas chromatograph. This instrument incorporates a modified commercial quadrupole mass spectrometer to achieve the instrument sensitivity and mass resolution characteristic of laboratory bench top units.

Andresen, Brian D. (Livermore, CA); Eckels, Joel D. (Livermore, CA); Kimmons, James F. (Manteca, CA); Myers, David W. (Livermore, CA)

1996-01-01T23:59:59.000Z

396

Portable gas chromatograph-mass spectrometer  

DOE Patents [OSTI]

A gas chromatograph-mass spectrometer (GC-MS) is described for use as a field portable organic chemical analysis instrument. The GC-MS is designed to be contained in a standard size suitcase, weighs less than 70 pounds, and requires less than 600 watts of electrical power at peak power (all systems on). The GC-MS includes: a conduction heated, forced air cooled small bore capillary gas chromatograph, a small injector assembly, a self-contained ion/sorption pump vacuum system, a hydrogen supply, a dual computer system used to control the hardware and acquire spectrum data, and operational software used to control the pumping system and the gas chromatograph. This instrument incorporates a modified commercial quadrupole mass spectrometer to achieve the instrument sensitivity and mass resolution characteristic of laboratory bench top units. 4 figs.

Andresen, B.D.; Eckels, J.D.; Kimmons, J.F.; Myers, D.W.

1996-06-11T23:59:59.000Z

397

Mass of Ca-36  

E-Print Network [OSTI]

PH YS ICA 1. RE VIK W C VO I. UMK 15, 5 UMBER 6 Mass of ~Cat R. E. Tribble, ~ J. D. Cossairt, and R. A. Kenefick Cyclotron Institute and Physics Department, Texas AChM University, College Station, Texas 77843 (Received 14 October 1976) The ' Ca...('He, He)' Ca reaction has been used to provide the first observation of the nuclide ' Ca. The Q value and mass excess were found to be ?57.58~0.04 and ?6.44+0.04 MeV, respectively. The new mass completes four members of the A = 36 isobaric quintet...

Tribble, Robert E.; Cossairt, J. D.; Kenefick, R. A.

1977-01-01T23:59:59.000Z

398

SunLine Transit Agency Fuel Cell Transit Bus: Fifth Evaluation...  

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

Fuel Cell Transit Bus: Fifth Evaluation Report SunLine Transit Agency Fuel Cell Transit Bus: Fifth Evaluation Report This report describes operations at SunLine Transit Agency for...

399

Electroweak phase transition in the economical 3-3-1 model  

E-Print Network [OSTI]

Following our approach to the electroweak phase transition (EWPT), we consider the phase transitions in framework of the economical 3-3-1 model (E331). Structure of phase transition in this model is divided into two periods. The first period is the phase transition $SU(3) \\rightarrow SU(2)$ at TeV scale and the second one is $SU(2) \\rightarrow U(1)$, which is like the Standard Model (SM) electroweak phase transition. Two periods are the first-order phase transitions if the masses of heavy bosons is equal to few TeVs and the mass of second neutral Higgs is, $0transition period is $1<\\omega<5$ TeV. In addition, we also derived conditions of the self interaction parameters in the Higgs potential. Therefore, new bosons are the triggers of the first-order electroweak phase transition with significant implications for the viability of electroweak baryogenesis scenarios in this model.

Phong, Vo Quoc; Van, Vo Thanh; Minh, Le Hoang

2014-01-01T23:59:59.000Z

400

NREL: Energy Systems Integration - Physical Scales of Energy...  

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

Photovoltaics Fleets and mass transit Plug-in hybrid electric vehicles District heating and cooling Combined heat and power Electricity distribution Large rooftop...

Note: This page contains sample records for the topic "mass transit systems" 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

Nanoscience to nanotechnology to manufacturing transition  

Science Journals Connector (OSTI)

The primary focus of this review is on the transition of nanoscience to nanotechnology to manufacturing, specifically related to nanostructuring of materials for next-generation systems having superior performance. We start with the discussion of intrinsic advantages of nanoscale materials and systematic approach for transition into systems. As the feature (grain) size of solid-state materials decreases, the defect content reduces and below a critical size material can be defect-free. Since these critical sizes for most materials lie in 5-100 nm, there is a fundamental advantage and an unprecedented opportunity to realise the property of a perfect material. Along with this opportunity, there is a major challenge with respect to the large fraction of atoms at the interfaces, which must be engineered to realise the advantages of nanotechnology-based systems. We specifically address nanosystems based upon nanodots and nanolayered materials synthesised by thin film deposition techniques, where recurring themes include nanostructuring of materials to improve performance; thin film epitaxy across the misfit scale for orientation controls; control of defects, interfaces and strains; and integration of nanoscale devices with (100) silicon based microelectronics and nanoelectronics. The systems of interest are based upon strong novel structural materials, nanomagnetics for information storage, nanostructured or Nano Pocket LEDs, variety of smart structures based upon vanadium oxide and novel perovskites integrated with Si(100), and nanotechnology based solutions to enhance fuel efficiency and reduce environmental pollution.

Jagdish Narayan

2012-01-01T23:59:59.000Z

402

Selenophene transition metal complexes  

SciTech Connect (OSTI)

This research shows that selenophene transition metal complexes have a chemistry that is similar to their thiophene analogs. Selenophene coordination has been demonstrated and confirmed by molecular structure in both the {eta}{sup 5}- and the {eta}{sup 1}(Se)-coordination modes. The reaction chemistry of selenophene complexes closely resembles that of the analogous thiophene complexes. One major difference, however, is that selenophene is a better donor ligand than thiophene making the selenophene complexes more stable than the corresponding thiophene complexes. The {sup 77}Se NMR chemical shift values for selenophene complexes fall within distinct regions primarily depending on the coordination mode of the selenophene ligand. In the final paper, the C-H bond activation of {eta}{sup 1}(S)-bound thiophenes, {eta}{sup 1}(S)-benzothiophene and {eta}{sup 1}(Se)-bound selenophenes has been demonstrated. The deprotonation and rearrangement of the {eta}{sup 1}(E)-bound ligand to the carbon bound L-yl complex readily occurs in the presence of base. Reprotonation with a strong acid gives a carbene complex that is unreactive towards nucleophilic attack at the carbene carbon and is stable towards exposure to air. The molecular structure of [Cp(NO)(PPh{sub 3})Re(2-benzothioenylcarbene)]O{sub 3}SCF{sub 3} was determined and contains a Re-C bond with substantial double bond character. Methyl substitution for the thienylcarbene or selenylcarbene gives a carbene that rearranges thermally to give back the {eta}{sup 1}(E)-bound complex. Based on these model reactions, a new mechanism for the H/D exchange of thiophene over the hydrodesulfurization catalyst has been proposed.

White, C.J.

1994-07-27T23:59:59.000Z

403

A question of mass  

Science Journals Connector (OSTI)

We present a pedagogical discussion of spontaneous symmetry breaking the Goldstone theorem and the Higgs mechanism. If the Higgs boson is found it might provide an explanation of the origin of mass.

Jeremy Bernstein

2011-01-01T23:59:59.000Z

404

Heavy Hybrid mesons Masses  

E-Print Network [OSTI]

We estimate the ground state masses of the heavy hybrid mesons using a phenomenological QCD-type potential. 0^{- -},1^{- -},0^{- +},1^{- +} and 0^{+ -} J^{PC} states are considered.

F. Iddir; L. Semlala

2006-11-13T23:59:59.000Z

405

MASS POLITICAL MOBILIZATION  

E-Print Network [OSTI]

................................................................................................................................................... MASS POLITICAL MOBILIZATION ................................................................................................................................................... Boix & Stokes: The Oxford Handbook of Comparative Politics Boixandstokes-chap21 Revise Proof page 497 20.4.2007 12:41pm #12;Boix & Stokes: The Oxford Handbook of Comparative Politics Boixandstokes-chap21

406

Masses of Fundamental Particles  

E-Print Network [OSTI]

In the original paper entitled, "Masses of Fundamental Particles"(arXiv:1109.3705v5, 10 Feb 2012), not only the masses of fundamental particles including the weak bosons, Higgs boson, quarks, and leptons, but also the mixing angles of quarks and those of neutrinos are all explained and/or predicted in the unified composite models of quarks and leptons successfully. In this addendum entitled, "Higgs Boson Mass in the Minimal Unified Subquark Model", it is emphasized that the Higgs boson mass is predicted to be about 130Gev in the minimal unified subquark model, which agrees well with the experimental values of 125-126GeV recently found by the ATLAS and CMS Collaborations at the LHC.

Hidezumi Terazawa

2014-06-11T23:59:59.000Z

407

Ising model: secondary phase transition  

E-Print Network [OSTI]

Lttice-spin phonons are considered, which make the heat capacity at the critical temperature satisfy experimental observations better. There is a BEC phase transition in an Ising model attributable to the lattice-spin phonons. We proved that the spin-wave theory only is available after BEC transition, and the magnons have the same characteristics as the lattice-spin phonons', resulting from quantum effect. Energy-level overlap effect at ultralow temperature is found. A prediction of BEC phase transition in a crystal is put forward as our theory generalization.

You-gang Feng

2012-04-09T23:59:59.000Z

408

Energy transport in the solar transition layer  

Science Journals Connector (OSTI)

...research-article Research Article Energy transport in the solar transition layer J...emission measure in the solar transition layer, which...the heat transport. solar transition layer|differential emission measure|energy transport|ion-acoustic...

2001-01-01T23:59:59.000Z

409

Mass of Cd104  

Science Journals Connector (OSTI)

A quadrupole-dipole-dipole-dipole spectrograph has been used with a 34.6 MeV proton beam to observe the Cd106(p, t)Cd104 reaction. The Q value is measured and a mass excess of -83 963(14) keV is inferred for Cd104.NUCLEAR REACTIONS Cd106(p, t)Cd104, E=34.6 MeV; Q value measured; mass excess inferred.

R. A. Dewberry; R. T. Kouzes; R. A. Naumann

1983-02-01T23:59:59.000Z

410

Effect of dimensionality on vapor-liquid phase transition  

SciTech Connect (OSTI)

Dimensionality play significant role on ‘phase transitions’. Fluids in macroscopic confinement (bulk or 3-Dimensional, 3D) do not show significant changes in their phase transition properties with extent of confinement, since the number of molecules away from the surrounding surfaces is astronomically higher than the number of molecules in close proximity of the confining surfaces. In microscopic confinement (quasi 3D to quasi-2D), however, the number of molecules away from the close proximity of the surface is not as high as is the case with macroscopic (3D) confinement. Hence, under the same thermodynamic conditions ‘phase transition’ properties at microscopic confinement may not remain the same as the macroscopic or 3D values. Phase transitions at extremely small scale become very sensitive to the dimensions as well as the surface characteristics of the system. In this work our investigations reveal the effect of dimensionality on the phase transition from 3D to quasi-2D to 2D behavior. We have used grand canonical transition matrix Monte Carlo simulation to understand the vapor–liquid phase transitions from 3D to quasi-2D behavior. Such studies can be helpful in understanding and controlling the fluid film behaviour confined between solid surfaces of few molecular diameters, for example, in lubrication applications.

Singh, Sudhir Kumar, E-mail: sksingh@thapar.edu [Department Chemical Engineering, Thapar University, Patiala-147004 Punjab (India)

2014-04-24T23:59:59.000Z

411

W Transverse Mass  

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

Transverse Mass Histogram Transverse Mass Histogram Data for 49,844 candidate W events are in an Excel spreadsheet with the following data as shown in the table below: A B C D 1 Run No Event No W TMass GeV/c2 Bins 2 55237 19588 68.71732 3 55237 30799 72.19464 Get the data. Sort the data by ascending mass. Be sure to sort all the data in the first three columns! Make a histogram of the data. Rather than graphing the data as individual points, physicists group the data by mass. They consider the full range of the data and divide it into "bins" of equal range size. A histogram is a graph of the number of events in each bin vs. the bin range. They are looking for a peak in the data where most of the masses fall. This will be the value of the mass as detemined by that dataset, and the width of the distribution is a reflection of the errors in the measurements.

412

Process for Transition of Responsibilities | Department of Energy  

Office of Environmental Management (EM)

for Transition of Responsibilities Process for Transition of Responsibilities Process for Transition of Responsibilities (Waste Management Conference 2006) Process for Transition...

413

Fuel Cell Transit Bus Coordination and Evaluation Plan California...  

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

Transit Bus Coordination and Evaluation Plan California Fuel Cell Transit Evaluation Team Fuel Cell Transit Bus Coordination and Evaluation Plan California Fuel Cell Transit...

414

Development of Site Transition Plan, Use of the Site Transition Framework,  

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

Development of Site Transition Plan, Use of the Site Transition Development of Site Transition Plan, Use of the Site Transition Framework, and Terms and Conditions for Site Transition Development of Site Transition Plan, Use of the Site Transition Framework, and Terms and Conditions for Site Transition This memorandum provides additional guidance on preparation of the Site Transition Plan (STP). Development of Site Transition Plan, Use of the Site Transition Framework, and Terms and Conditions for Site Transition More Documents & Publications Site Transition Summary: Cleanup Completion to Long-Term Stewardship at Department of Energy On-going Mission Sites Process for Transition of Responsibilities Process for Transition of Uranium Mill Tailings Radiation Control Act Title II Disposal Sites to the U.S. Department of Energy Office of Legacy

415

Site Transition Framework | Department of Energy  

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

(April 2004) Site Transition Framework More Documents & Publications Process for Transition of Uranium Mill Tailings Radiation Control Act Title II Disposal Sites to the...

416

Transition Strategies for 2006 and 2007  

Broader source: Energy.gov [DOE]

Presentation on Transition Strategies given by Sigmund Gronich of the U.S. Department of Energy during the DOE Hydrogen Transition Analysis Workshop on January 26, 2006.

417

Records and Information Management Transition Guidance (November...  

Energy Savers [EERE]

Records and Information Management Transition Guidance (November 2013) Records and Information Management Transition Guidance (November 2013) This guidance document establishes a...

418

Building America Expert Meeting Report: Transitioning Traditional...  

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

Transitioning Traditional HVAC Contractors to Whole House Performance Contractors Building America Expert Meeting Report: Transitioning Traditional HVAC Contractors to Whole House...

419

Optical Transitions in Monolayer and Bilayer Graphene  

Science Journals Connector (OSTI)

Optical transitions in grapheme are studied by infrared spectroscopy. The interband transitions in graphene monolayers show a relatively flat spectrum, while those in bilayers are...

Wang, Feng; Zhang, Yuanbo; Tian, Chuanshan; Girit, Caglar; Zettl, Alex; Shen, Y Ron

420

Enterprise Architecture Transition Plan - April 2011 | Department...  

Office of Environmental Management (EM)

Enterprise Architecture Transition Plan - April 2011 Enterprise Architecture Transition Plan - April 2011 DOE ETP Submission040411.docx More Documents & Publications Impacts of...

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


421

Bulk viscosity and the phase transition of the linear sigma model  

E-Print Network [OSTI]

In this work we deal with the critical behavior of the bulk viscosity in the linear sigma model (LSM) as an example of a system which can be treated by using different techniques. Starting from the Boltzmann-Uehling-Uhlenbeck equation we compute the bulk viscosity over entropy density of the LSM in the large-N limit. We search for a possible maximum of the bulk viscosity over entropy density at the critical temperature of the chiral phase transition. The information about this critical temperature, as well as the effective masses, is obtained from the effective potential. We find that the expected maximum (as a measure of the conformality loss) is absent in the large N in agreement with other models in the same limit. However, this maximum appears when, instead of the large-N limit, the Hartree approximation within the Cornwall-Jackiw-Tomboulis (CJT) formalism is used. Nevertheless, this last approach to the LSM does not give rise to the Goldstone theorem and also predicts a first order phase transition instead of the expected second order one. Therefore both, the large-N limit and the CJT-Hartree approximations, should be considered as complementary for the study of the critical behavior of the bulk viscosity in the LSM.

Antonio Dobado; Juan M. Torres-Rincon

2012-06-06T23:59:59.000Z

422

SUBSIDY ENERGY EMPLOYEES TRANSIT (SEET)  

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

SUBSIDY ENERGY EMPLOYEES TRANSIT (SEET) SUBSIDY ENERGY EMPLOYEES TRANSIT (SEET) Decrease in the Transit Subsidy Per The American Taxpayer Relief Act of 2012, the maximum amount for the Transit Subsidy is due to decrease from $245 to $130 a month. This change is scheduled to take effect on January 1, 2014. Outlined below are actions that you must take to purchase your fare for January 2014. SmarTrip less than $130.00 Per Month No Action Required SmarTrip greater than $130.00 Per Month Action Required SmarTrip Participants The new amount of $130 will post to your Smart Benefits account the first time you touch your card to a SmarTrip target in January 2014. You must ensure that there is money in your personal account. Metro will deduct fare from your personal account once the Smart Benefits

423

AEC and Oak Ridge Transitions  

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

States arsenal. The transition for X-10 from the Graphite Reactor to being named the Oak Ridge National Laboratory on February 1, 1948 was not as smooth or as easily defined....

424

Roughening Transitions in HCP Lattices  

Science Journals Connector (OSTI)

Direct observation of three equilibrium roughening transitions (at about one degree Kelvin)...4...was possible because equilibrium between the solid and superfluid phases of helium can be reached on the scale of ...

J. Adler; A. Hashibon; S. G. Lipson

1998-01-01T23:59:59.000Z

425

Phase identification and interfacial transitions in ternary polymer blends by ToF-SIMS  

Science Journals Connector (OSTI)

Abstract Phase identification and the study of the interphase region in multi-component polymer blends with a chemically similar structure using conventional techniques is a challenge. In this work, the detailed morphological analysis of such systems is examined. A ternary blend comprised of poly butylene succinate (PBS); poly lactic acid (PLA); and polycaprolactone (PCL) with a partial wetting morphology is carefully selected since all three components are polyesters with low interfacial tensions. It will be shown that a novel technique by applying multivariate analysis (MVA) on time-of-flight secondary ion mass spectrometry (ToF-SIMS) data can effectively identify the complex phase structure, especially in blends with chemically similar components. Furthermore, for the first time for such systems, this technique provides detailed information about interfacial thicknesses and transitions. By employing the principal component analysis (PCA) method on the ToF-SIMS data of pure polymers, specific peaks with a certain molecular ion mass related to each polymer are determined. Using overlaid mappings on the surface of the blend by ToF-SIMS and selected ion masses to identify each polymer results in the differentiation of the various phases represented as a morphological image. In a second step, the multivariate curve resolution (MCR) method is used as a “self modeling curve resolution” for the recovery of pure components from a multi-component mixture when little or no prior information is available. Total pseudo-color RGB images of PBS/PLA/PCL show that PLA droplets unambiguously partially wet the PBS and PCL phases. Since each pixel from the analysis in the high lateral resolution image represents a 200 nm diameter, the interfacial transitions can also be studied for both PLA/PBS and PLA/PCL interfaces. The results show the concentration variation of phases across the interfaces. A complete trace line across the two interfaces (PLA/PBS and PLA/PCL) allows for the quantitative determination of interfacial thickness for the first time for such systems.

Sepehr Ravati; Suzie Poulin; Konstantinos Piyakis; Basil D. Favis

2014-01-01T23:59:59.000Z

426

TRI State Motor Transit to Resume Shipping Waste to WIPP  

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

Tri-State Motor Transit to Resume Tri-State Motor Transit to Resume Shipping Transuranic Waste to WIPP CARLSBAD, N.M., January 19, 2001 - Tri-State Motor Transit will resume shipping waste to the Waste Isolation Pilot Plant (WIPP) January 22, transporting transuranic waste from the Idaho National Engineering and Environmental Laboratory (INEEL) to WIPP. This will be the first shipment by Tri-State Motor Transit (TSMT) to WIPP since the November 21 incident in which drivers hauling waste from INEEL to WIPP failed to make the turn off from I-25 onto U.S. 285, deviating from the designated transportation route by 27 miles. The New Mexico State Police noticed the route deviation and contacted the TRANSCOM Control Center (TCC) in Albuquerque to verify that the shipment was off course. The TCC confirmed the route deviation using their tracking system and notified the drivers, via

427

Magnetotellurics At Walker-Lane Transitional Zone Region (Pritchett, 2004)  

Open Energy Info (EERE)

Walker-Lane Transitional Zone Region (Pritchett, 2004) Walker-Lane Transitional Zone Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Magnetotellurics At Walker-Lane Transitional Zone Region (Pritchett, 2004) Exploration Activity Details Location Walker-Lane Transition Zone Geothermal Region Exploration Technique Magnetotellurics Activity Date Usefulness useful DOE-funding Unknown Notes NOTE: These are theoretical/computer simulation tests of various methods on eight hypothetical 'model' basing-and-range geothermal systems. "The 300-meter heat flow holes are essentially useless for finding the "hidden" reservoirs. Clearly, the best results are obtained from the SP and MT surveys, with DC resistivity a close third. It is concluded that the best

428

Optical transitions in carbon nanotubes  

Science Journals Connector (OSTI)

Analytical expressions for the optical matrix elements of semiconducting carbon nanotubes are obtained for different polarizations of the incident light. It is shown that, for the light polarized along the nanotube axis and transitions between the extrema of electronic subbands, the optical matrix element only weakly depends on the nanotube chirality and excitation energy. It is found that, for the light polarized in the plane perpendicular to the nanotube axis, both v2?c1 and v1?c2 transitions are allowed.

S. V. Goupalov

2005-11-03T23:59:59.000Z

429

Secondary phi meson peak as an indicator of a QCD phase transition in ultrarelativistic heavy-ion collisions  

Science Journals Connector (OSTI)

In a previous paper, we have shown that a double phi peak structure appears in the dilepton invariant mass spectrum if a first order QCD phase transition occurs in ultrarelativistic heavy-ion collisions. Furthermore, the transition temperature can be determined from the transverse momentum distribution of the low mass phi peak. In this work, we extend the study to the case that a smooth crossover occurs in the quark-gluon plasma to the hadronic matter transition. We find that the double phi peak structure still exists in the dilepton spectrum and thus remains a viable signal for the formation of the quark-gluon plasma in ultrarelativistic heavy-ion collisions.

M. Asakawa and C. M. Ko

1994-12-01T23:59:59.000Z

430

Optical pumping via incoherent Raman transitions  

E-Print Network [OSTI]

A new optical pumping scheme is presented that uses incoherent Raman transitions to prepare a trapped Cesium atom in a specific Zeeman state within the 6S_{1/2}, F=3 hyperfine manifold. An important advantage of this scheme over existing optical pumping schemes is that the atom can be prepared in any of the F=3 Zeeman states. We demonstrate the scheme in the context of cavity quantum electrodynamics, but the technique is equally applicable to a wide variety of atomic systems with hyperfine ground-state structure.

A. D. Boozer; R. Miller; T. E. Northup; A. Boca; H. J. Kimble

2007-10-04T23:59:59.000Z

431

Gravitational Phase Transition of Heavy Neutrino Matter  

E-Print Network [OSTI]

We study the phase transition of a system of self-gravitating neutrinos in the presence of a large radiation density background in the framework of the Thomas-Fermi model. We show that, by cooling a non-degenerate gas of massive neutrinos below some critical temperature, a condensed phase emerges, consisting of quasi-degenerate supermassive neutrino stars. These compact dark objects could play an important role in structure formation in this universe, as they might in fact provide the seeds for galactic nuclei and quasi-stellar objects.

Neven Bilic; Raoul D. Viollier

1996-07-16T23:59:59.000Z

432

Atomic mass compilation 2012  

SciTech Connect (OSTI)

Atomic mass reflects the total binding energy of all nucleons in an atomic nucleus. Compilations and evaluations of atomic masses and derived quantities, such as neutron or proton separation energies, are indispensable tools for research and applications. In the last decade, the field has evolved rapidly after the advent of new production and measuring techniques for stable and unstable nuclei resulting in substantial ameliorations concerning the body of data and their precision. Here, we present a compilation of atomic masses comprising the data from the evaluation of 2003 as well as the results of new measurements performed. The relevant literature in refereed journals and reports as far as available, was scanned for the period beginning 2003 up to and including April 2012. Overall, 5750 new data points have been collected. Recommended values for the relative atomic masses have been derived and a comparison with the 2003 Atomic Mass Evaluation has been performed. This work has been carried out in collaboration with and as a contribution to the European Nuclear Structure and Decay Data Network of Evaluations.

Pfeiffer, B., E-mail: bpfeiffe@uni-mainz.de [II. Physikalisches Institut, Justus-Liebig-Universität Gießen, Gießen (Germany); GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany); Venkataramaniah, K. [Sri Sathya Sai Institute of Higher Learning, Prasanthinilayam (India)] [Sri Sathya Sai Institute of Higher Learning, Prasanthinilayam (India); Czok, U. [II. Physikalisches Institut, Justus-Liebig-Universität Gießen, Gießen (Germany)] [II. Physikalisches Institut, Justus-Liebig-Universität Gießen, Gießen (Germany); Scheidenberger, C. [GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany) [GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany); II. Physikalisches Institut, Justus-Liebig-Universität Gießen, Gießen (Germany)

2014-03-15T23:59:59.000Z

433

Energy-Water Nexus for Mass Cultivation of Algae  

Science Journals Connector (OSTI)

Energy-Water Nexus for Mass Cultivation of Algae ... This work addresses the energy needed to manage the water used in the mass cultivation of saline, eukaryotic algae grown in open pond systems. ... Estimates of both direct and upstream energy requirements for obtaining, containing, and circulating water within algae cultivation systems are developed. ...

Cynthia Folsom Murphy; David T. Allen

2011-06-15T23:59:59.000Z

434

Colloidal Glass Transition Observed in Confinement Carolyn R. Nugent,* Kazem V. Edmond, Hetal N. Patel, and Eric R. Weeks  

E-Print Network [OSTI]

Colloidal Glass Transition Observed in Confinement Carolyn R. Nugent,* Kazem V. Edmond, Hetal N suspension confined between two quasiparallel walls as a model system for glass transitions in confined. For higher volume fraction samples (closer to the glass transition), the onset of confinement effects occurs

Weeks, Eric R.

435

E-Print Network 3.0 - accelerator mass spectrometer Sample Search...  

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

for environmental research Mass ... Source: Pacific Northwest National Laboratory, Building Systems Program Collection: Energy Storage, Conversion and Utilization 4...

436

Testing atomic mass models with radioactive beams  

SciTech Connect (OSTI)

Significantly increased yields of new or poorly characterized exotic isotopes that lie far from beta-decay stability can be expected when radioactive beams are used to produce these nuclides. Measurements of the masses of these new species are very important. Such measurements are motivated by the general tendency of mass models to diverge from one another upon excursions from the line of beta-stability. Therefore in these regions (where atomic mass data are presently nonexistent or sparse) the models can be tested rigorously to highlight the features that affect the quality of their short-range and long-range extrapolation properties. Selection of systems to study can be guided, in part, by a desire to probe those mass regions where distinctions among mass models are most apparent and where yields of exotic isotopes, produced via radioactive beams, can be optimized. Identification of models in such regions that have good predictive properties will aid materially in guiding the selection of additional experiments which ultimately will provide expansion of the atomic mass database for further refinement of the mass models. 6 refs., 5 figs.

Haustein, P.E.

1989-01-01T23:59:59.000Z

437

Self-Organized Transition to Coherent Activity in Disordered Media  

Science Journals Connector (OSTI)

Synchronized oscillations are of critical functional importance in many biological systems. We show that such oscillations can arise without centralized coordination in a disordered system of electrically coupled excitable and passive cells. Increasing the coupling strength results in waves that lead to coherent periodic activity, exhibiting cluster, local and global synchronization under different conditions. Our results may explain the self-organized transition in a pregnant uterus from transient, localized activity initially to system-wide coherent excitations just before delivery.

Rajeev Singh; Jinshan Xu; Nicolas G. Garnier; Alain Pumir; Sitabhra Sinha

2012-02-09T23:59:59.000Z

438

Solid-solid phase transition measurements in iron  

SciTech Connect (OSTI)

Previously, dynamic experiments on iron have observed a non-zero transition time and width in the solid-solid {alpha}-{var_epsilon} phase transition. Using Proton Radiography at the Los Alamos Neutron Science Center, we have performed plate impact experiments on iron to further study the {alpha}-{var_epsilon} phase transition which occurs at 13GPa. A 40mm bore powder gun was coupled to a proton radiography beam line and imaging system and synchronized to the impact of the projectile on the target sample with the proton beam pattern. A typical experimental configuration for the iron study, as shown below in 3 color-enhanced radiographs, is a 40mm diameter aluminum sabot impacting a 40mm diameter of polycrystalline ARMCO iron. The iron is backed by a sapphire optical window for velocimetry measurements. The aluminum flyer on the left of the iron is barely visible for visual display purposes. Direct density jumps were measured which corresponded to calculations to within 1% using a Wondy mUlti-phase equation of state model. In addition, shock velocities were measured using an edge fitting technique and followed that edge movement from radiograph to radiograph, where radiographs are separated in time by 500 ns. Preliminary measurements give a shock velocity (P1 wave) of 5.251 km/s. The projectile velocity was 0.725 km/s which translate to a peak stress of 17.5 GPa. Assuming the P1 wave is instantaneous, we are able to calibrate the chromatic, motion, object and camera blur by measuring the width of the P1 wave. This approximation works in this case since each of the two density jumps are small compared to the density of the object. Subtracting the measured width of the P1 wave in quadrature from the width of the P2 wave gives a preliminary measurement of the transition length of 265 {mu}m. Therefore, a preliminary measured phase transition relaxation time {tau} = transition length/u{sub s} = 265 {mu}m/5.251 km/s = 50 ns. Both Boettger and Jensen conclude that the transition rate and likely the transition mechanisms depend on the impact stress and the sample thickness. Since Proton Radiography can measure directly the transition length as well as the shock velocity, a transition time can be directly calculated. With higher higher energy protons we have better resolution of the measured width and edge locations. This will allow a more precise measurement of phase transition relaxation time. We propose to perform a series of experiments to measure the phase transition relaxation time, {tau}, as a function of drive and sample size.

Schwartz, Cynthia Louise [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

439

Connecticut Transit (CTTRANSIT) Fuel Cell Transit Bus: Third Evaluation Report and Appendices  

Broader source: Energy.gov [DOE]

This report describes operations at Connecticut Transit (CTTRANSIT) in Hartford for one prototype fuel cell bus and three new diesel buses operating from the same location. The prototype fuel cell bus was manufactured by Van Hool and ISE Corp. and features an electric hybrid drive system with a UTC Power PureMotion 120 Fuel Cell Power System and ZEBRA batteries for energy storage. The fuel cell bus started operation in April 2007, and evaluation results through October 2009 are provided in this report.

440

Formal Transition in Agent Organizations Eric Matson  

E-Print Network [OSTI]

, the company's management must understand the methodology and process of transition, or more generally termedFormal Transition in Agent Organizations Eric Matson Department of Computer Science and Engineering define organization transition. Specifically, we describe a formal process of organi- zation transition

Deloach, Scott A.

Note: This page contains sample records for the topic "mass transit systems" 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

On the existence of vapor-liquid phase transition in dusty plasmas  

SciTech Connect (OSTI)

The phenomenon of phase transition in a dusty-plasma system (DPS) has attracted some attention in the past. Earlier Farouki and Hamaguchi [J. Chem. Phys. 101, 9876 (1994)] have demonstrated the existence of a liquid to solid transition in DPS where the dust particles interact through a Yukawa potential. However, the question of the existence of a vapor-liquid (VL) transition in such a system remains unanswered and relatively unexplored so far. We have investigated this problem by performing extensive molecular dynamics simulations which show that the VL transition does not have a critical curve in the pressure versus volume diagram for a large range of the Yukawa screening parameter ? and the Coulomb coupling parameter ?. Thus, the VL phase transition is found to be super-critical, meaning that this transition is continuous in the dusty plasma model given by Farouki and Hamaguchi. We provide an approximate analytic explanation of this finding by means of a simple model calculation.

Kundu, M.; Sen, A.; Ganesh, R. [Institute for Plasma Research, Bhat, Gandhinagar 382 428, Gujarat (India); Avinash, K. [Department of Physics and Astrophysics, University of Delhi, Delhi 110007 (India)

2014-10-15T23:59:59.000Z

442

DISCOVERY OF A LOW-MASS COMPANION TO A METAL-RICH F STAR WITH THE MARVELS PILOT PROJECT  

SciTech Connect (OSTI)

We report the discovery of a low-mass companion orbiting the metal-rich, main sequence F star TYC 2949-00557-1 during the Multi-object APO Radial Velocity Exoplanet Large-area Survey (MARVELS) pilot project. The host star has an effective temperature T{sub eff} = 6135 {+-} 40 K, logg = 4.4 {+-} 0.1, and [Fe/H] = 0.32 {+-} 0.01, indicating a mass of M = 1.25 {+-} 0.09 M{sub sun} and R = 1.15 {+-} 0.15 R{sub sun}. The companion has an orbital period of 5.69449 {+-} 0.00023 days and straddles the hydrogen burning limit with a minimum mass of 64 M{sub J} , and thus may be an example of the rare class of brown dwarfs orbiting at distances comparable to those of 'Hot Jupiters'. We present relative photometry that demonstrates that the host star is photometrically stable at the few millimagnitude level on time scales of hours to years, and rules out transits for a companion of radius {approx}>0.8 R{sub J} at the 95% confidence level. Tidal analysis of the system suggests that the star and companion are likely in a double synchronous state where both rotational and orbital synchronization have been achieved. This is the first low-mass companion detected with a multi-object, dispersed, fixed-delay interferometer.

Fleming, Scott W.; Ge Jian; Mahadevan, Suvrath; Lee, Brian; Cuong Nguyen, Duy; Morehead, Robert C.; Wan Xiaoke; Zhao Bo; Liu Jian; Guo Pengcheng; Kane, Stephen R. [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 326711-2055 (United States); Eastman, Jason D.; Siverd, Robert J.; Scott Gaudi, B. [Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States); Niedzielski, Andrzej [Torun Center for Astronomy, Nicolaus Copernicus University, ul. Gagarina 11, 87-100, Torun (Poland); Sivarani, Thirupathi [Indian Institute of Astrophysics, Bangalore 560034 (India); Stassun, Keivan G.; Gary, Bruce [Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States); Wolszczan, Alex [Department of Astronomy and Astrophysics, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802 (United States); Barnes, Rory, E-mail: scfleming@astro.ufl.ed [Department of Astronomy, University of Washington, P.O. Box 351580, Seattle, WA 98195 (United States)

2010-08-01T23:59:59.000Z

443

Semiconductor-To-Metal Transitions in Transition-Metal Compounds  

Science Journals Connector (OSTI)

The theory presented in a previous paper is applied to the transition-metal compounds which are known to exhibit semiconductor-to-metal transitions. In particular, the predictions of the theory are compared with the experimental results of Feinleib and Paul on V2O3. Very good agreement is obtained for the magnitude of the energy gap and for its pressure and stress coefficients. The theory appears to be consistent with the available data on the other oxides of vanadium and titanium as well. Band models for all of these compounds are suggested. The effects of spin-disorder scattering and broadening, polaron formation, and non-stoichiometry are considered quantitatively.

David Adler; Julius Feinleib; Harvey Brooks; William Paul

1967-03-15T23:59:59.000Z

444

The Mass Spectroscope  

Science Journals Connector (OSTI)

... THE handbook, prepared by M. G. Inghram of JL the University of Chicago, and R ... Committee on Nuclear Science of the National Research Council*, presents in some detail the fundamental design and operational techniques pertinent to the efficient utilization of the mass spectroscope. Attention ...

S. WEINTROUB

1955-03-12T23:59:59.000Z

445

Mass Media Science Fellows  

Science Journals Connector (OSTI)

...alternative energy sources, including solar, bio-mass, and geothermal. The changing...assistant secretary for con-servation and solar applications, U.S. Department of Energy...representative of the United Re-public of Tanzania to the United Na-tions, the resolution...

1979-12-07T23:59:59.000Z

446

Residential Thermal Mass Construction  

E-Print Network [OSTI]

The southwest has long known the value of building homes with high mass materials. The ancient Pueblo Indians found that by using "adobe" they could capture the energy necessary to survive the harsh desert climate. Our ancestors knew that a heavy...

Thieken, J. S.

1988-01-01T23:59:59.000Z

447

Top Quark Mass Measurements  

Science Journals Connector (OSTI)

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

A. P. Heinson; CDF Collaboration; DØ Collaboration

2006-01-01T23:59:59.000Z

448

Mass Extinctions Geology 331  

E-Print Network [OSTI]

into shallow water and released to atmosphere. · Oxidation of coal and hydrocarbons by extensive erosion of sedimentary rocks, and/or massive volcanic eruptions in Siberia? CH2O + O2 CO2 +H2O · Release of methane by rapid influx of C12 caused by methane release and mass dying at the end of the Permian. Organisms

Kammer, Thomas

449

Gauge Invariance and Mass  

Science Journals Connector (OSTI)

It is argued that the gauge invariance of a vector field does not necessarily imply zero mass for an associated particle if the current vector coupling is sufficiently strong. This situation may permit a deeper understanding of nucleonic charge conservation as a manifestation of a gauge invariance, without the obvious conflict with experience that a massless particle entails.

Julian Schwinger

1962-01-01T23:59:59.000Z

450

RDMD Transition Project  

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

ENERGY STORAGE PROGRAM AT THE PACIFIC ENERGY STORAGE PROGRAM AT THE PACIFIC NORTHWEST NATIONAL LABORATORIES JUN LIU PACIFIC NORTHWEST NATIONAL LABORATORY, RICHLAND, WA 99252 Funded by the Energy Storage Systems Program of the U.S. Department Of Energy through Pacific Northwest National Laboratories Transformational Materials Science Initiative Launched the $15M Transformational Materials Science Initiative at PNNL to address the materials science challenges for energy storage in 2007. Conducted a PNNL workshop on the research needs for stationary energy storage; Initiated nanostructured electrode materials research for Li-ion batteries; Initiated proof-of-concept work for planar Na-beta batteries; Started to explore the fundamental chemistry in redox flow batteries; Supported the initial development of the method for grid analysis.

451

RDMD Transition Project  

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

EMERGING TECHNOLOGIES FOR LARGE SCALE ENERGY EMERGING TECHNOLOGIES FOR LARGE SCALE ENERGY STORAGE - TOWARDS LOW TEMPERATURE SODIUM BATTERIES JUN LIU PACIFIC NORTHWEST NATIONAL LABORATORY, RICHLAND, WA 99252 PNNL: Zhenguo Yang, Yuliang Cao, Xiaolin Li, Lifeng Xiao Sandia: Bruce C. Bunker Supported by PNNL's transformational Materials Science Initiative Funded by the Energy Storage Systems Program of the U.S. Department Of Energy through Pacific Northwest National Laboratories Significant challenges for meeting the long term low cost and reliability requirement for stationary energy storage. Distributed storage Central storage End user storage Capital cost ($/kWh) CAES Pumped Hydro Power Stationary 1 kW 100 kW 10 MW 1 GW 10 kW 1 MW 100 MW Li Ion Battery NaS, Na metal halide Vehicle Energy Density and Cost Lifetime and Capital Cost

452

FTA- SunLine Transit Agency- Final Report  

Broader source: Energy.gov [DOE]

Final Report on the Federal Transit Administration, SunLine Transit Agency Cooperative Agreement (Part One)

453

Ising model of a glass transition  

Science Journals Connector (OSTI)

Numerical simulations by Tanaka and co-workers indicate that glass-forming systems of moderately polydisperse hard-core particles, in both two and three dimensions, exhibit diverging correlation lengths. These correlations are described by Ising-like critical exponents, and are associated with diverging, Vogel-Fulcher-Tamann, structural relaxation times. Related simulations of thermalized hard disks indicate that the curves of pressure versus packing fraction for different polydispersities exhibit a sequence of transition points, starting with a liquid-hexatic transition for the monodisperse case, and crossing over with increasing polydispersity to glassy, Ising-like critical points. I propose to explain these observations by assuming that glass-forming fluids contain twofold degenerate, locally ordered clusters of particles, similar to the two-state systems that have been invoked to explain other glassy phenomena. This paper starts with a brief statistical derivation of the thermodynamics of thermalized, hard-core particles. It then discusses how a two-state, Ising-like model can be described within that framework in terms of a small number of statistically relevant, internal state variables. The resulting theory agrees accurately with the simulation data. I also propose a rationale for the observed relation between the Ising-like correlation lengths and the Vogel-Fulcher-Tamann formula.

J. S. Langer

2013-07-17T23:59:59.000Z

454

Lab transitions employee giving campaigns  

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

Lab transitions employee giving campaigns Lab transitions employee giving campaigns Community Connections: Our link to Northern New Mexico Communities Latest Issue:Dec. 2013 - Jan. 2014 All Issues » submit Lab transitions employee giving campaigns This year's theme: "I Give Because..." November 1, 2013 Employee Giving Logo The theme for this year's employee giving campaigns Contact Community Programs Office Director Kurt Steinhaus Email Editor Linda Anderman Email During the past seven years contributions to the Lab's annual employee giving campaign have risen by 370 percent and hopes to surpass the $3.1 million amount collected last year. As in past years, that amount includes a $1 million dollar match from the Lab's manager, Los Alamos National Security, LLC (LANS). The funds support nonprofits within the region and

455

Workforce Transition Modeling Environment user`s guide  

SciTech Connect (OSTI)

The Pacific Northwest Laboratory (PNL) was tasked by the US Department of Energy Albuquerque Field Office (DOE-AL) to develop a workforce assessment and transition planning tool to support integrated decision making at a single DOE installation. The planning tool permits coordinated, integrated workforce planning to manage growth, decline, or transition within a DOE installation. The tool enhances the links and provides commonality between strategic, programmatic, and operations planners and human resources. Successful development and subsequent complex-wide implementation of the model also will facilitate planning at the national level by enforcing a consistent format on data that are now collected by installations in corporate-specific formats that are not amenable to national-level analyses. The workforce assessment and transition planning tool, the Workforce Transition Modeling Environment (WFTME), consists of two components: the Workforce Transition Model and the Workforce Budget Constraint Model. The Workforce Transition Model, the preponderant of the two, assists decision makers identify and evaluate alternatives for transitioning the current workforce to meet the skills required to support projected workforce requirements. The Workforce Budget Constraint Model helps estimate the number of personnel that will be affected by a given workforce budget increase or decrease and assists in identifying how the corresponding hirings or layoffs should be distributed across the Common Occupation Classification System (COCS) occupations. This user`s guide describes the use and operation of the WFTME. This includes the functions of modifying data and running models, interpreting output reports, and an approach for using the WFTME to evaluate various workforce transition scenarios.

Stahlman, E.J.; Oens, M.A.; Lewis, R.E.

1993-10-01T23:59:59.000Z

456

Topological phase transitions in superradiance lattices  

E-Print Network [OSTI]

The discovery of the quantum Hall effect (QHE) reveals a new class of matter phases, topological insulators (TI's), which have been extensively studied in solid-state materials and recently in photonic structures, time-periodic systems and optical lattices of cold atoms. All these topological systems are lattices in real space. Our recent study shows that Scully's timed Dicke states (TDS) can form a superradiance lattice (SL) in momentum space. Here we report the discovery of topological phase transitions in a two-dimensional SL in electromagnetically induced transparency (EIT). By periodically modulating the three EIT coupling fields, we can create a Haldane model with in-situ tunable topological properties. The Chern numbers of the energy bands and hence the topological properties of the SL manifest themselves in the contrast between diffraction signals emitted by superradiant TDS. The topological superradiance lattices (TSL) provide a controllable platform for simulating exotic phenomena in condensed matte...

Wang, Da-Wei; Yuan, Luqi; Liu, Ren-Bao; Zhu, Shi-Yao

2015-01-01T23:59:59.000Z

457

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid  

Open Energy Info (EERE)

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Details Activities (4) Areas (4) Regions (0) Abstract: A system for analysis of inclusion gas contents based upon quadrupole mass spectrometry has been designed, assembled and tested during the first 7 months of funding. The system is currently being tested and calibrated using inclusions with known gas contents from active geothermal systems. Analyses are in progress on inclusions from the Salton Sea, Valles Caldera, Geysers, and Coso geothermal systems. Author(s): Mckibben, M. A.

458

Resolution and Structural Transitions of Elongated States of Ubiquitin  

E-Print Network [OSTI]

. It is important to stress that it is currently unknown whether or not transitions observed in the gas phase-abundance forms undergo efficient ( 90 to 100%) conversion into states associated with well-defined peaks or inaccessible in the gas phase. These results are compared with several previous IMS measurements of this system

Clemmer, David E.

459

Smooth Transition Between Controllers for Floating Wind Turbines  

Science Journals Connector (OSTI)

This paper presents a novel wind turbine control system which gives a smooth power output during transitions between different controllers. The paper presents an implementation of a control system designed for an offshore ?oating wind turbine using a linear Model Predictive Control approach.The performance is investigated in computer simulations, with emphasis on stability in the tower fore–aft motion and behaviour during transition between controllers. The results clearly demonstrate that the wind turbine using the proposed algorithm for smooth transition indeed exhibits a smooth system behaviour. In comparison to a case with sudden transition, the behaviour is found to be signi?cantly improved. Moreover, tower oscillations are found to be stable, by virtue of the controller prediction horizon exceeding the natural periodicity of the tower oscillations.Smooth system behaviour is important to increase the lifetime of critical parts of the turbine. With increasing turbine sizes such considerations are of increasing importance, making the results obtained in this paper of particular relevance for large wind turbines, both onshore and offshore.

Eivind Lindeberg; Harald G Svendsen; Kjetil Uhlen

2012-01-01T23:59:59.000Z

460

Numerical Entropy Production on Shocks and Smooth Transitions  

E-Print Network [OSTI]

production does not result in a substantial extra computational cost. We consider the one-dimensional system we started in [5]. We compute the entropy production on a gas dynamic test problem for severalNumerical Entropy Production on Shocks and Smooth Transitions Gabriella Puppo z November 12, 2001

Ceragioli, Francesca

Note: This page contains sample records for the topic "mass transit systems" 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

Implementing SPC in a Simulation Model for Manufacturing Transitions  

E-Print Network [OSTI]

- ~(~-;::;: Implementing SPC in a Simulation Model for Manufacturing Transitions Harriet Black of resources utilization, and optimization of system re- sources. Although discrete-event simulation modeling the design and development of an integrated SPC and simulation model. Figure 1 shows a screen snapshot

Nembhard, Harriet Black

462

Nanoscale mass conveyors  

DOE Patents [OSTI]

A mass transport method and device for individually delivering chargeable atoms or molecules from source particles is disclosed. It comprises a channel; at least one source particle of chargeable material fixed to the surface of the channel at a position along its length; a means of heating the channel; and a means for applying an controllable electric field along the channel, whereby the device transports the atoms or molecules along the channel in response to applied electric field. In a preferred embodiment, the mass transport device will comprise a multiwalled carbon nanotube (MWNT), although other one dimensional structures may also be used. The MWNT or other structure acts as a channel for individual or small collections of atoms due to the atomic smoothness of the material. Also preferred is a source particle of a metal such as indium. The particles move by dissociation into small units, in some cases, individual atoms. The particles are preferably less than 100 nm in size.

Regan, Brian C. (Oakland, CA); Aloni, Shaul (Albany, CA); Zettl, Alexander K. (Kensington, CA)

2008-03-11T23:59:59.000Z

463

Electrospray Ionization Mass Spectrometry  

SciTech Connect (OSTI)

Electrospray Ionization (ESI) is a process whereby gas phase ions are created from molecules in solution. As a solution exits a narrow tube in the presence of a strong electric field, an aerosol of charged droplets are is formed that produces gas phase ions as they it desolvates. ESI-MS comprises the creation of ions by ESI and the determination of their mass to charge ratio (m/z) by MS.

Kelly, Ryan T.; Marginean, Ioan; Tang, Keqi

2014-06-13T23:59:59.000Z

464

DOE Transition Documents - 2008 | Department of Energy  

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

Transition Documents - 2008 Transition Documents - 2008 DOE Transition Documents - 2008 Following are the DOE Transition Documents - 2008 Files in PDF format 2008_Transition_Corporate_Overview_Book_One.pdf 2008_Transition_Important_Issues_Book_Two.pdf 2008_Transition_Program_Details_Book_Three.pdf 2008_Transition_Budget_Details_Book_Four.pdf Authorize_Changes_Contractor_Work_Force_Restructuring_Policy.pdf Compilation Congressional Correspondence, January 1, 2008 throught November 14, 2008 COMPILATION OF MEMORANDA OF UNDERSTANDING AND INTERAGENCY AGREEMENTS DOE Transition Team President-Elect's 2008 Compliance_Policies_Guidance_Contractor__Force_Restructuring.pdf DOE_Contractor_Work_Force_Restructuring_Approval_Thresholds.pdf DOE_Selects_Savannah_River_Remediation__Liquid_Waste.pdf DOE STGWG Group

465

Nuclear matter to strange matter transition in holographic QCD  

E-Print Network [OSTI]

We construct a simple holographic QCD model to study nuclear matter to strange matter transition. The interaction of dense medium and hadrons is taken care of by imposing the force balancing condition for stable D4/D6/D6 configuration. By considering the intermediate and light flavor branes interacting with baryon vertex homogeneously distributed along R^3 space and requesting the energy minimization, we find that there is a well defined transition density as a function of current quark mass. We also find that as density goes up very high, intermediate (or heavy) and light quarks populate equally as expected from the Pauli principle. In this sense, the effect of the Pauli principle is realized as dynamics of D-branes.

Youngman Kim; Yunseok Seo; Sang-Jin Sin

2009-11-19T23:59:59.000Z

466

Top Mass and Properties  

E-Print Network [OSTI]

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

Yen-Chu Chen

2008-05-15T23:59:59.000Z

467

Transition-fault test generation  

E-Print Network [OSTI]

large to store in the memory of the tester. The proposed methods of test generation utilize stuck-at-fault tests to create transition-fault test sets of a smaller size. Greedy algorithms are used in the generation of both the stuck...

Cobb, Bradley Douglas

2013-02-22T23:59:59.000Z

468

The energy transition Gerald Leach  

E-Print Network [OSTI]

interest to energy supply forecasting, both history experience, have proved to be effective or for biomassThe energy transition Gerald Leach The paper considers the substitution of tradition- these restrictions, they are of great importance to al biomass fuels by modern energy sources in the consumer welfare

Kammen, Daniel M.

469

Rail Transit and Energy Consumption  

Science Journals Connector (OSTI)

...Transit and Energy Consumption In a recent issue...D.C. 20418 The Diesel's Advantages It...p. 517). The diesel car, while it has...Other types of engine can be made to meet...catalysts by using leaded fuel because it is 3 to...politically unpopular. The diesel car requires no add-on...

CHARLES A. LAVE

1977-09-02T23:59:59.000Z

470

Magnetism in amorphous transition metals  

Science Journals Connector (OSTI)

Overall features of magnetism in amorphous transition metals have been investigated on the basis of a finite-temperature theory of the local-environment effect. It is shown that the simple ferromagnetism of Fe, Co, and Ni is drastically changed by structural disorder; amorphous transition metals form spin glasses (SG’s) for compositions near amorphous Fe (6.7?N?7.35), ferromagnets for compositions near amorphous Co (7.35?N?9.0), and paramagnetisms for compositions near amorphous Ni (9.0?N?10.0) where N is the number of d electrons. The SG is accompanied by formation of local ferromagnetic clusters for N?7.2, and shows reentrant behavior at the ferromagnetic boundary N?7.35. The ferromagnetism in amorphous transition metals is shown to be well explained by the main-peak position in the noninteracting densities of states. It is found that structural disorder enhances the Curie temperatures (TC) in the range 7.9?N?8.5 as compared with bcc and fcc structures. These results explain recent experimental data for the SG in Fe-rich amorphous alloys and the high TC in amorphous Co-Y alloys, but they are quite different from the early picture obtained for amorphous transition-metal–metalloid alloys.

Y. Kakehashi

1991-05-01T23:59:59.000Z

471

Two Flavour QCD Phase Transition  

E-Print Network [OSTI]

Results on the phase transition in QCD with two flavours of light staggered fermions from an ongoing simulation are presented. We find the restoration of the chiral SU(2) x SU(2) symmetry, but not of the axial U_A(1) symmetry.

G. Boyd; F. Karsch; E. Laermann; M. Oevers

1996-07-20T23:59:59.000Z

472

Extinction Transition on a Pie  

E-Print Network [OSTI]

Extinction transition of bacteria under forced rotation is analyzed in pie geometry. Under convection, separation of the radial and the azimuthal degrees of freedom is not possible, and the linearized evolution operator is diagonalized numerically. Some characteristics scales are compared with the results of recent experiments, and the ``integrable'' limit of the theory at narrow growth region is analyzed.

Nadav M. Shnerb

2000-07-04T23:59:59.000Z

473

Re-Architecting the DoD Acquisition Process: A Transition to the Information Age  

E-Print Network [OSTI]

and Management Program #12;2 Re-Architecting the DoD Acquisition Process: A Transition to the Information Age1 Re-Architecting the DoD Acquisition Process: A Transition to the Information Age by Kevin M Masters of Science, Engineering Management University of Missouri, Rolla, MO Submitted to the System

de Weck, Olivier L.

474

Robust control of transition maneuvers for a class of V/STOL aircraft  

Science Journals Connector (OSTI)

This work focuses on the control law design for a class of aerial systems able to perform transition maneuvers from hover to level flight configurations. An analysis of the aircraft dynamics and of the flight envelope of the vehicle, encompassing both ... Keywords: Path following, Robust control, Transition maneuver, Unmanned Aerial Vehicles

Roberto Naldi; Lorenzo Marconi

2013-06-01T23:59:59.000Z

475

Insulator/Chern-insulator transition in the Haldane model T. Thonhauser and David Vanderbilt  

E-Print Network [OSTI]

Insulator/Chern-insulator transition in the Haldane model T. Thonhauser and David Vanderbilt properties of the Haldane model as the system undergoes its transition from the normal-insulator to the Chern-insulator phase. We find that the density matrix has expo- nential decay in both insulating phases, while having

Vanderbilt, David

476

DOE Hydrogen Transition Analysis Workshop U.S. Department of Energy -Washington, DC  

E-Print Network [OSTI]

of transition options from the current gasoline-based transportation system to a nascent hydrogen economy. DOE/fueling stations in the transition timeframe. Where and how big does the network need to be in order to be both gasoline infrastructure. · DOE is interested in industry feedback on the types of fleet programs

477

Formation and fragmentation of gas-phase ion-molecule complexes of transition-metal ions with organic molecules containing two functional groups  

Science Journals Connector (OSTI)

A mass spectrometer fast atom bombardment source has been used to synthesize, in the gas phase, the ion-molecule complexes of transition-metal ions (Ni+, CO+, Fe+, and Mn+) with ?- or ?-unsaturated alkenenitriles...

Lin-Zhi Chen; Jack M. Miller

1992-05-01T23:59:59.000Z

478

Evidence of variation of oxide ion content in structural phase transition of Ba2Fe2O5+? observed by simultaneous TG-DTA-MS measurements  

Science Journals Connector (OSTI)

Abstract The structural phase transition of Ba2Fe2O5+? from monoclinic to cubic in a N2 atmosphere has been analyzed using simultaneous thermogravimetry-differential thermal analysis and mass spectroscopy (TG-DTA-MS). It has been confirmed that the structural phase transition is reversible, of the first order, endothermic, and involves a mass increase with increasing temperature. From the mass spectrometry, direct evidence that the origin of the mass variation in the phase transition is the variation of oxygen nonstoichiometry has been obtained. From the simultaneously observed TG curves, the variation of ? for the transition from the monoclinic phase to the cubic phase has been evaluated to be about 0.008.

Fumito Fujishiro; Koji Okuda; Takuya Hashimoto

2013-01-01T23:59:59.000Z

479

Page 1 of 2 Case Study Results by Rural NTD Transit Agency (CA only)  

E-Print Network [OSTI]

Page 1 of 2 Case Study Results by Rural NTD Transit Agency (CA only) Rural NTD Code Rural Transit-055 Alpine County Local Transp. Comm. CA CA 362 56.3% 0.3191 45.7% 1.35 69.4% 9R02-018 Amador Regional Transit System CA CA 1062 71.0% 0.3732 17.7% 4.20 65.0% 9R02-007 Calaveras Transit CA CA 907 64.9% 0

480

Precision Spectroscopy of Pionic Atoms: From Pion Mass Evaluation to Tests of Chiral Perturbation Theory  

E-Print Network [OSTI]

Preliminary results of the strong interaction shift and width in pionic hydrogen ($\\pi H$) using an X-ray spectrometer with spherically bent crystals and CCDs as X-ray detector are presented. In the experiment at the Paul Scherrer Institute three different $(np\\to 1s)$ transitions in $\\pi H$ were measured. Moreover the pion mass measurement using the $(5 \\to 4)$ transitions in pionic nitrogen and muonic oxygen is presented

Trassinelli, M

2004-01-01T23:59:59.000Z

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


481

EMSL: Capabilities: Mass Spectrometry: Next-Generation Mass Spectrometry  

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

Next-Generation Mass Spectrometry Next-Generation Mass Spectrometry Additional Information Meet the Mass Spectrometry Experts Related EMSL User Projects Mass Spectrometry Tools are Applied to all Science Themes Next-Generation Mass Spectrometry Proteomics Research Resource for Integrative Biology Biological and Environmental Research - PNNL Proteomics PNNL's Biological MS Data and Software Distribution Center Mass Spectrometry brochure EMSL is committed to offering state-of-the-art instruments to its users. At a workshop in January of 2008, EMSL mass spectrometry experts joined experts from many universities, private companies, and government institutions and laboratories at a conference held at the National High Magnetic Field Laboratory in Tallahassee Florida. Workshop participants reviewed the state of the art of high-performance mass spectrometers,

482

Mass spectrometry of proteins of known mass Andrew D. Miranker*  

E-Print Network [OSTI]

deter- mination has two significant advantages. First, the mass accuracy under these conditions to the orifice of the mass analyzer. As a result, there is a local separation of charges at the tip

Miranker, Andrew

483

Transport properties near the z=2 insulator-superconductor transition  

SciTech Connect (OSTI)

We consider here the fluctuation conductivity near the point of the insulator-superconductor transition in a system of Josephson junction arrays in the presence of particle-hole asymmetry and Ohmic dissipation. The transition is characterized by the dynamical critical exponent z=2, opening the possibility of the perturbative renormalization-group treatment. The coupling to the Ohmic heat bath, giving the finite quasiparticle lifetime, leads to the nonmonotonic behavior of the dc conductivity as a function of temperature in the leading logarithmic approximation.

Dalidovich, Denis; Phillips, Philip

2001-06-01T23:59:59.000Z

484

Landau-Zener Transitions in Frozen Pairs of Rydberg Atoms  

SciTech Connect (OSTI)

We have induced adiabatic transitions in pairs of frozen Rydberg sodium atoms of a supersonic beam. The diatomic ns+ns{yields}np+(n-1)p transition takes place in a time-dependent electric field and originates from the adiabatic change of the internal state of the pair induced by the dipole-dipole interaction. This is experimentally achieved by sweeping an electric field across the energy degeneracy ns ns-np(n-1)p. Our results fully agree with a two-level Landau-Zener model in the diatom system.

Saquet, Nicolas; Cournol, Anne; Beugnon, Jerome; Robert, Jacques; Pillet, Pierre; Vanhaecke, Nicolas [Laboratoire Aime Cotton, CNRS, Batiment 505, Universite Paris-Sud, 91405 Orsay (France)

2010-04-02T23:59:59.000Z

485

Entanglement and spin squeezing in non-Hermitian phase transitions  

E-Print Network [OSTI]

We show that non-Hermitian dynamics generate substantial entanglement in many-body systems. We consider the non-Hermitian Lipkin-Meshkov-Glick model and show that the non-Hermitian phase transition occurs with maximum multi-particle entanglement: there is full N-particle entanglement at the transition, in contrast to the Hermitian case. The non-Hermitian model also exhibits more spin squeezing than the Hermitian model, showing that non-Hermitian dynamics are useful for quantum metrology. Experimental implementations with cavity-QED and trapped ions are discussed.

Tony E. Lee; Florentin Reiter; Nimrod Moiseyev

2014-09-24T23:59:59.000Z

486

Transition Operators Entering Neutrinoles Double Electron Capture to Excited Nuclear States  

E-Print Network [OSTI]

We construct the effective transition operators relevant for neutrinoless double electron capture leading to final nuclear states different than $0^{+}$. From the structure of these operators we see that, if such a process is observed experimentally, it will be very helpful in singling out the very important light neutrino mass contribution from the other lepton violating mechanisms

J. D. Vergados

2011-08-02T23:59:59.000Z

487

Landau-Zener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer  

E-Print Network [OSTI]

Landau-Zener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer it is not practical to solve the time-dependent Schr"odinger equation d* *irectly, the time-dependent Born-Oppenheimer of the masses of the nuclei. In the standard time-dependent Born-Oppenheimer approximation, the electrons

Joye, Alain

488

LandauZener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer  

E-Print Network [OSTI]

Landau­Zener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer­dependent Born­Oppenheimer approximation is a principal tool for studying molecular dynamics. This approximation to the average of the masses of the nuclei. In the standard time­dependent Born­Oppenheimer approximation

Hagedorn, George A.

489

Prevalence of Small-scale Jets from the Network Structures of the Solar Transition Region and  

E-Print Network [OSTI]

furnace model Funnels from networks Tu et al. 2005 #12;Implication for solar wind origin (II) · Mass lossPrevalence of Small-scale Jets from the Network Structures of the Solar Transition Region-Smithsonian Center for Astrophysics 2Lockheed Martin Solar and Astrophysics Laboratory 3Max Planck Institute

490

Orientational-ordering transition fcc-Pa3 of Ar1-x(N2)x  

Science Journals Connector (OSTI)

Solid solutions of Ar1-x(N2)x, 0.83transition precedes the fcc-hcp reconstruction of the center-of-mass lattice. The long-range orientational-order parameter has been determined.

H. Klee and K. Knorr

1991-04-01T23:59:59.000Z

491

First Order Phase Transition in Intermediate Energy Heavy Ion Collisions  

E-Print Network [OSTI]

We model the disassembly of an excited nuclear system formed as a result of a heavy ion collision. We find that, as the beam energy in central collisions in varied, the dissociating system crosses a liquid-gas coexistence curve, resulting in a first-order phase transition. Accessible experimental signatures are identified: a peak in specific heat, a power-law yield for composites, and a maximum in the second moment of the yield distribution.

J. Pan; S. Das Gupta; M. Grant

1997-11-01T23:59:59.000Z

492

Macro-System Model Overview  

Broader source: Energy.gov [DOE]

Presentation on Macro-System Model Overview given by Mark Ruth of the National Renewable Energy Laboratory during the DOE Hydrogen Transition Analysis Workshop on January 26, 2006.

493

TRANSIT TIMING OBSERVATIONS FROM KEPLER. VIII. CATALOG OF TRANSIT TIMING MEASUREMENTS OF THE FIRST TWELVE QUARTERS  

SciTech Connect (OSTI)

Following the works of Ford et al. and Steffen et al. we derived the transit timing of 1960 Kepler objects of interest (KOIs) using the pre-search data conditioning light curves of the first twelve quarters of the Kepler data. For 721 KOIs with large enough signal-to-noise ratios, we obtained also the duration and depth of each transit. The results are presented as a catalog for the community to use. We derived a few statistics of our results that could be used to indicate significant variations. Including systems found by previous works, we have found 130 KOIs that showed highly significant times of transit variations (TTVs) and 13 that had short-period TTV modulations with small amplitudes. We consider two effects that could cause apparent periodic TTV—the finite sampling of the observations and the interference with the stellar activity, stellar spots in particular. We briefly discuss some statistical aspects of our detected TTVs. We show that the TTV period is correlated with the orbital period of the planet and with the TTV amplitude.

Mazeh, Tsevi; Nachmani, Gil; Holczer, Tomer; Sokol, Gil [School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 (Israel); Fabrycky, Daniel C. [Department of Astronomy and Astrophysics, University of Chicago, 5640 Ellis Ave., Chicago, IL 60637 (United States); Ford, Eric B.; Ragozzine, Darin [Astronomy Department, University of Florida, Gainesville, FL 32111 (United States); Sanchis-Ojeda, Roberto [Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Rowe, Jason F.; Lissauer, Jack J. [NASA Ames Research Center, Moffett Field, CA 94035 (United States); Zucker, Shay [Department of Geophysical, Atmospheric and Planetary Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences Tel Aviv University, 69978 Tel Aviv (Israel); Agol, Eric [Department of Astronomy, Box 351580, University of Washington, Seattle, WA 98195 (United States); Carter, Joshua A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Quintana, Elisa V. [SETI Institute, 189 Bernardo Ave, Suite 100, Mountain View, CA 94043 (United States); Steffen, Jason H. [Fermilab Center for Particle Astrophysics, P.O. Box 500, MS 127, Batavia, IL 60510 (United States); Welsh, William [Astronomy Department, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182 (United States)

2013-10-01T23:59:59.000Z

494

PLANETS AROUND LOW-MASS STARS. III. A YOUNG DUSTY L DWARF COMPANION AT THE DEUTERIUM-BURNING LIMIT ,  

SciTech Connect (OSTI)

We report the discovery of an L-type companion to the young M3.5V star 2MASS J01225093-2439505 at a projected separation of 1.''45 ( Almost-Equal-To 52 AU) as part of our adaptive optics imaging search for extrasolar giant planets around young low-mass stars. 2MASS 0122-2439 B has very red near-infrared colors similar to the HR 8799 planets and the reddest known young/dusty L dwarfs in the field. Moderate-resolution (R Almost-Equal-To 3800) 1.5-2.4 {mu}m spectroscopy reveals a near-infrared spectral type of L4-L6 and an angular H-band shape, confirming its cool temperature and young age. The kinematics of 2MASS 0122-2439 AB are marginally consistent with members of the {approx}120 Myr AB Dor young moving group based on the photometric distance to the primary (36 {+-} 4 pc) and our radial velocity measurement of 2MASS 0122-2439 A from Keck/HIRES. We adopt the AB Dor group age for the system, but the high energy emission, lack of Li I {lambda}6707 absorption, and spectral shape of 2MASS 0122-2439 B suggest a range of {approx}10-120 Myr is possible. The age and luminosity of 2MASS 0122-2439 B fall in a strip where ''hot-start'' evolutionary model mass tracks overlap as a result of deuterium burning. Several known substellar companions also fall in this region (2MASS J0103-5515 ABb, AB Pic b, {kappa} And b, G196-3 B, SDSS 2249+0044 B, LP 261-75 B, HD 203030 B, and HN Peg B), but their dual-valued mass predictions have largely been unrecognized. The implied mass of 2MASS 0122-2439 B is Almost-Equal-To 12-13 M{sub Jup} or Almost-Equal-To 22-27 M{sub Jup