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


1

Seasonal Kinetic Energy Variability of Near-Inertial Motions  

Science Conference Proceedings (OSTI)

Seasonal variability of near-inertial horizontal kinetic energy is examined using observations from a series of McLane Moored Profiler moorings located at 39°N, 69°W in the western North Atlantic Ocean in combination with a one-dimensional, depth-...

Katherine E. Silverthorne; John M. Toole

2009-04-01T23:59:59.000Z

2

Ocean Circulation Kinetic Energy: Reservoirs, Sources,  

E-Print Network (OSTI)

. The coupling of the generation of different energy forms in the dynamics (in either balanced or wave motions are almost nonexistent in the ocean. www.annualreviews.org · Ocean Circulation Kinetic Energy 255 Annu.Rev.Fluid processes? Are the seemingly different dynamical ranges coupled? 2. THE OCEANIC ENERGY BUDGET We begin

Ferrari, Raffaele

3

Thermodynamic & Kinetic Data for Sustainable Energy  

Science Conference Proceedings (OSTI)

Thermodynamic & Kinetic Data for Sustainable Energy. Summary: Industry needs thermodynamic and kinetic data for the ...

2012-10-05T23:59:59.000Z

4

Amber Kinetics | Open Energy Information  

Open Energy Info (EERE)

search Name Amber Kinetics Product Start-up company developing a novel flywheel energy storage system with the Lawrence Livermore National Laboratory. References Amber...

5

Pressure Fluctuations during Coherent Motions and Their Effects on the Budgets of Turbulent Kinetic Energy and Momentum Flux within a Forest Canopy  

Science Conference Proceedings (OSTI)

Pressure fluctuations associated with coherent motions within a forest canopy at Camp Borden, Canada, are retrieved from tower measurements of velocities and temperatures using the governing equations. The retrieved pressure fluctuations consist ...

Y. Zhuang; B. D. Amiro

1994-06-01T23:59:59.000Z

6

Kinetic Energy LLC | Open Energy Information  

Open Energy Info (EERE)

Name Kinetic Energy LLC Place Texas Utility Id 56210 Utility Location Yes Ownership R NERC ERCOT Yes ISO Ercot Yes Activity Retail Marketing Yes References EIA Form EIA-861...

7

An Approach to Kinetic Energy Diagnosis of Meso–Synoptic Scale interactions  

Science Conference Proceedings (OSTI)

To explicitly describe the energy exchange between meso and synoptic-scale motions, a diagnostic scheme of kinetic energy has been developed. By using a horizontal filtering technique, meteorological variables are separated into synoptic and ...

Shou-Jun Chen; Le-Sheng Bai; Ernest C. Kung

1990-12-01T23:59:59.000Z

8

Danotek Motion Technologies | Open Energy Information  

Open Energy Info (EERE)

Danotek Motion Technologies Danotek Motion Technologies Jump to: navigation, search Name Danotek Motion Technologies Place Ann Arbor, Michigan Zip 48103 Sector Wind energy Product Founded in 2001, Danotek develops electrical conversion systems, including generators, brushless motors, and electronics controls, for the wind power, fuel cell, and power storage markets. References Danotek Motion Technologies[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Danotek Motion Technologies is a company located in Ann Arbor, Michigan . References ↑ "Danotek Motion Technologies" Retrieved from "http://en.openei.org/w/index.php?title=Danotek_Motion_Technologies&oldid=344069"

9

Modeling & Characterization of Harvestable Kinetic Energy for ...  

Science Conference Proceedings (OSTI)

... gov 301.975-5479. Modeling & Characterization of Harvestable Kinetic Energy for Wearable Medical Sensors. RF-enabled ...

2011-03-14T23:59:59.000Z

10

MHK Technologies/Blue Motion Energy marine turbine | Open Energy  

Open Energy Info (EERE)

Motion Energy marine turbine Motion Energy marine turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Blue Motion Energy marine turbine.jpg Technology Profile Primary Organization Blue Motion Energy Technology Resource Click here Current Technology Type Click here Cross Flow Turbine Technology Description The Blue Motion Energy marine turbine however uses a patented system of seawalls A placed radial around the vertically mounted rotor B this way it is possible to funnel the current and significantly increase the flow velocity independent of the direction of the current Technology Dimensions Device Testing Date Submitted 59:30.2 << Return to the MHK database homepage Retrieved from "http://en.openei.org/w/index.php?title=MHK_Technologies/Blue_Motion_Energy_marine_turbine&oldid=681547

11

Department of Energy Files Motion to Withdraw Yucca Mountain...  

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

Files Motion to Withdraw Yucca Mountain License Application Department of Energy Files Motion to Withdraw Yucca Mountain License Application March 3, 2010 - 12:00am Addthis...

12

Motion to intervene and comments of the energy services group...  

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

Motion to intervene and comments of the energy services group of Hydro-Quebec and H.Q. Energy Services (U.S.) Inc, on FE 99-1 Motion to intervene and comments of the energy...

13

Rainfall Kinetic Energy in Eastern Australia  

Science Conference Proceedings (OSTI)

Rainfall kinetic energy is a commonly used climatic parameter for the prediction of soil erosion by water. Such a parameter is difficult to measure and is usually estimated from relationships established between rainfall energy and rainfall ...

Colin John Rosewell

1986-11-01T23:59:59.000Z

14

Ocean Motion International LLC | Open Energy Information  

Open Energy Info (EERE)

Ocean Motion International LLC Ocean Motion International LLC Jump to: navigation, search Name Ocean Motion International LLC Place Saulsbury, Tennessee Zip 38067 Sector Ocean Product Marine energy technology firm developing ocean/ wave powered generators. Coordinates 35.052242°, -89.083299° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.052242,"lon":-89.083299,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

15

Kinetic Energy Systems | Open Energy Information  

Open Energy Info (EERE)

Systems Systems Jump to: navigation, search Name Kinetic Energy Systems Place Ocala, Florida Zip 34476 Sector Hydro Product Designs and develops tidal generators. Has notably patented the KESC Tidal Generator which is based on free flow hydrodynamics. Coordinates 29.187525°, -82.140394° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.187525,"lon":-82.140394,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

16

AER NY Kinetics LLC | Open Energy Information  

Open Energy Info (EERE)

Database. This company is involved in the following MHK Projects: Ogdensburg Kinetic Energy Project This article is a stub. You can help OpenEI by expanding it. Retrieved...

17

Enabling Energy-Efficient Approaches to Thermal Comfort Using Room Air Motion  

E-Print Network (OSTI)

Energy Efficiency, Thermal Comfort with Air MotionEnergy Efficiency, Thermal Comfort with Air Motion No-fan 2Energy Efficiency, Thermal Comfort with Air Motion

Pasut, Wilmer; Arens, Edward; Zhang, Hui; Kaam, Soazig; Zhai, Yongchao

2013-01-01T23:59:59.000Z

18

Kinetic Energy and the Equivalence Principle  

E-Print Network (OSTI)

According to the general theory of relativity, kinetic energy contributes to gravitational mass. Surprisingly, the observational evidence for this prediction does not seem to be discussed in the literature. I reanalyze existing experimental data to test the equivalence principle for the kinetic energy of atomic electrons, and show that fairly strong limits on possible violations can be obtained. I discuss the relationship of this result to the occasional claim that ``light falls with twice the acceleration of ordinary matter.''

S. Carlip

1999-09-03T23:59:59.000Z

19

The Transformation of Tropical Storm Agnes into an Extratropical Cyclone. Part II: Moisture, Vorticity and Kinetic Energy Budgets  

Science Conference Proceedings (OSTI)

Moisture, vorticity and kinetic energy budgets are constructed to diagnose the transformation of tropical storm Agnes (June 1972) into an extratropical cyclone in this second of two papers on Agnes. The vertical motions and divergent wind ...

Geoffrey J. DiMego; Lance F. Bosart

1982-05-01T23:59:59.000Z

20

Motion to intervene and comments of the energy services group...  

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

intervene and comments of the energy services group of Hydro-Quebec and H.Q. Energy Services (U.S.) Inc, on FE 99-1 Motion to intervene and comments of the energy services group of...

Note: This page contains sample records for the topic "motion kinetic energy" 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

ESS 2012 Peer Review - Amber Kinetics Flywheel Energy Storage Demo - Ed Chiao, Amber Kinetics  

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

amber_kinetics amber_kinetics DOE Peer Review September 2012 Ed Chiao, CEO amber_kinetics Amber Kinetics: Our Flywheel History Start-up launched in 2009, Stanford University Cleantech Entrepreneurship class Established a technology licensing & flywheel development partnership with LLNL; Amber Kinetics identified new material & lower-cost rotor designs for commercialization Awarded a Smart Grid Energy Storage Demonstration grant award for flywheels Awarded a matching grant for development & demonstration of flywheel technology Stanford University Lawrence Livermore National Laboratory U.S. Department of Energy California Energy Commission World-class institutions | innovative, deep flywheel technology owned by Amber Amber Kinetics, Inc. - Confidential and Proprietary, All Rights Reserved

22

Auxiliary power supply with kinetic energy storage  

SciTech Connect

Alternating current is supplied to an auxiliary load on a from a power supply comprised of a dc-energized inverter and a synchronous machine coupled to the inverter. The inverter supplies the alternating current requirements of the load up to the normal steady state load current magnitude. The synchronous machine stores kinetic energy when the load current load does not exceed its normal steady state magnitude, and converts kinetic energy into electrical energy to supply the load current requirements in excess of its normal steady-state load magnitude and to supply load current whenever the dc source inverter connection is interrupted. Frequency and amplitude of load voltage are regulated by operator commands through control apparatus coupled to the inverter and the synchronous machine.

Plunkett, A.B.; Turnbull, F.G.

1982-03-23T23:59:59.000Z

23

Evaluating Mesoscale NWP Models Using Kinetic Energy Spectra  

Science Conference Proceedings (OSTI)

Kinetic energy spectra derived from observations in the free atmosphere possess a wavenumber dependence of k?3 for large scales, characteristic of 2D turbulence, and transition to a k?5/3 dependence in the mesoscale. Kinetic energy spectra ...

William C. Skamarock

2004-12-01T23:59:59.000Z

24

The Vertical Partition of Oceanic Horizontal Kinetic Energy  

Science Conference Proceedings (OSTI)

To produce an interpretation of the surface kinetic energy as measured by altimeters, a survey is made of the vertical structure of kinetic energy profiles in a large number of globally distributed long current meter records. Although the data ...

Carl Wunsch

1997-08-01T23:59:59.000Z

25

MEASUREMENTS, ERRORS, AND NEGATIVE KINETIC ENERGY  

E-Print Network (OSTI)

An analysis of errors in measurement yields new insight into the penetration of quantum particles into classically forbidden regions. In addition to “physical” values, realistic measurements yield “unphysical ” values which, we show, can form a consistent pattern. An experiment to isolate a particle in a classically forbidden region obtains negative values for its kinetic energy. These values realize the concept of a weak value, discussed in previous works. 0

Yakir Aharonov; Sandu Popescu; Daniel Rohrlich; Lev Vaidman

1993-01-01T23:59:59.000Z

26

DOE Opposes Injunction Motion | Department of Energy  

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

the State of Washington's motion to enjoin the Department's efforts to wind down the Yucca Mountain Program. The Department's filing, made in the U.S. Court of Appeals for the...

27

Help:Motion Chart | Open Energy Information  

Open Energy Info (EERE)

Motion Chart Motion Chart Jump to: navigation, search This page is designed to help you create your very own Google Motion Chart, or Gapminder-like visualization. You'll work in Google Docs to develop the motion chart and with the OpenEI team to publish it on OpenEI. About The motion chart is a cool way to display data that changes over time. The dynamic chart allows you to quickly explore a lot of data with a fairly easy-to-use interface. The example below displays page visit and usage statistics for openei.org. Google motion chart (Gapminder): Getting Started Here is what you'll need from the start: View of a google doc with OpenEI analytics data A Google account Data (time series data with at least 2 fields) An OpenEI user account Step 1 - The Data The data to the right is a view of some OpenEI use statistics from the past

28

Energy of tsunami waves generated by bottom motion  

E-Print Network (OSTI)

generation models. Theoretical and Computational Fluid Dynamics, 21:245­269, 2007. Z. Kowalik, W. Knight, TEnergy of tsunami waves generated by bottom motion By Denys Dutykh, Fr´ed´eric Dias CMLA, ENS investigation on the energy of waves generated by bottom motion is performed here. We start with the full

Paris-Sud XI, Université de

29

Department of Energy Files Motion to Withdraw Yucca Mountain License  

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

Files Motion to Withdraw Yucca Mountain Files Motion to Withdraw Yucca Mountain License Application Department of Energy Files Motion to Withdraw Yucca Mountain License Application March 3, 2010 - 12:00am Addthis WASHINGTON, D.C. - The U.S. Department of Energy today filed a motion with the Nuclear Regulatory Commission to withdraw the license application for a high-level nuclear waste repository at Yucca Mountain with prejudice. "President Obama is fully committed to ensuring that the Nation meets our long-term storage obligations for nuclear waste," said Department of Energy General Counsel Scott Blake Harris. "In light of the decision not to proceed with the Yucca Mountain nuclear waste repository, the President directed Secretary Chu to establish the Blue Ribbon Commission on America's

30

Spatial redistribution of turbulent and mean kinetic energy  

Science Conference Proceedings (OSTI)

The turbulent spatial redistribution of turbulent and mean kinetic energy and its exchange is investigated in the framework of an K-{epsilon} model in a magnetized plasma column. The kinetic energy is transferred from the turbulence into the zonal flow around the shear layer. The Reynolds stress profile adjusts to the shear layer, which results in a transport of mean kinetic energy from the region around the shear layer into the shear layer.

Manz, P.; Xu, M.; Fedorczak, N.; Thakur, S. C.; Tynan, G. R. [Center for Momentum Transport and Flow Organization,University of California at San Diego, San Diego, California 92093 (United States); Center for Energy Research, University of California at San Diego, San Diego, California 92093 (United States)

2012-01-15T23:59:59.000Z

31

Kinetic Simulations of Fusion Energy Dynamics at the Extreme...  

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

Kinetic Simulations of Fusion Energy Dynamics at the Extreme Scale PI Name: William Tang PI Email: tang@pppl.gov Institution: Princeton Plasma Physics Laboratory Allocation...

32

Kinetic Wave Power | Open Energy Information  

Open Energy Info (EERE)

Kinetic Wave Power Jump to: navigation, search Name Kinetic Wave Power Address 2861 N Tupelo St Place Midland Zip 48642 Sector Marine and Hydrokinetic Phone number 989-839-9757...

33

Motion  

Science Conference Proceedings (OSTI)

... Motion ofmagnetic domain wallsin thin, narro wstr ips -p .7/30 Pulse-Dri ven Wall ... domain wallsin thin, narro wstr ips -p .8/30 Pulse-Dri ven Wall ...

2004-05-22T23:59:59.000Z

34

MHK Projects/Ogdensburg Kinetic Energy Project | Open Energy Information  

Open Energy Info (EERE)

Ogdensburg Kinetic Energy Project Ogdensburg Kinetic Energy Project < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.6942,"lon":-75.4863,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

35

Motion to Intervene_Department of Energy.DOC  

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

OFFICE OF ELECTRICITY DELIVERY AND ENERGY RELIABILITY OFFICE OF ELECTRICITY DELIVERY AND ENERGY RELIABILITY International Transmission Company d/b/a/ ITCTransmission ) ) Docket No. PP-230-4 MOTION TO INTERVENE OF THE NEW YORK TRANSMISSION OWNERS Pursuant to Rules 212 and 214 of the Rules of Practice and Procedure, 18 C.F.R. §§ 385.212 and 385.214 (2010), Central Hudson Gas & Electric Corporation, Consolidated Edison

36

Widget:Motion Chart Visualizations | Open Energy Information  

Open Energy Info (EERE)

Motion Chart Visualizations Jump to: navigation, search Widget to display Google motion charts on OpenEI. Usage: Widget:Motion Chart Visualizations |configgeneralunitedstates...

37

Momentum and Kinetic Energy Budgets of Simulated Supercell Thunderstorms  

Science Conference Proceedings (OSTI)

The results of numerical simulations of severe thunderstorms with rotating updrafts and supercell characteristics are analyzed to determine their sources, sinks, and transports of momentum and kinetic energy. Two simulations are used, one ...

Douglas K. Lilly; Brian F. Jewett

1990-03-01T23:59:59.000Z

38

Turbulence Kinetic Energy Budget Profiles Derived from Doppler Sodar Measurements  

Science Conference Proceedings (OSTI)

Doppler sodar wind measurements made in light wind conditions in September 1979 near a power plant in Turbigo, Italy, are used to derive terms in the turbulence kinetic energy (TKE) budget. Measurements on five days are grouped into two classes: ...

Gary K. Greenhut; Giangiuseppe Mastrantonio

1989-02-01T23:59:59.000Z

39

Kinetic Energy Transfer between Internal Gravity Waves and Turbulence  

Science Conference Proceedings (OSTI)

We describe a reliable method for distinguishing the mean, wave and turbulence fields when internal waves with changing amplitude perturb the turbulent boundary layer. By integrating the component wave and turbulence kinetic energy budgets ...

J. J. Finnigan

1988-02-01T23:59:59.000Z

40

The Mesoscale Kinetic Energy Spectrum of a Baroclinic Life Cycle  

Science Conference Proceedings (OSTI)

The atmospheric mesoscale kinetic energy spectrum is investigated through numerical simulations of an idealized baroclinic wave life cycle, from linear instability to mature nonlinear evolution and with high horizontal and vertical resolution (?x ...

Michael L. Waite; Chris Snyder

2009-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Sources of Eddy Kinetic Energy in the Labrador Sea  

Science Conference Proceedings (OSTI)

Experiments with a suite of North Atlantic general circulation models are used to examine the sources of eddy kinetic energy (EKE) in the Labrador Sea. A high-resolution model version (112°) quantitatively reproduces the observed signature. A ...

Carsten Eden; Claus Böning

2002-12-01T23:59:59.000Z

42

Determining Turbulent Kinetic Energy Dissipation from Batchelor Curve Fitting  

Science Conference Proceedings (OSTI)

An algorithm is presented for obtaining the rate of turbulent kinetic energy dissipation by fitting the theoretical Batchelor spectrum to the temperature gradient spectrum at high wavenumbers. The algorithm is relatively robust in selecting the ...

David A. Luketina; Jörg Imberger

2001-01-01T23:59:59.000Z

43

Evaluation of the Turbulent Kinetic Energy Dissipation Rate Inside ...  

Science Conference Proceedings (OSTI)

Abstract Inferring the vertical variation of the mean turbulent kinetic energy ..... the times at which a threshold-crossings occurs are defined by the indicator function .... of noise infection and noise intensity, introducing a threshold Tc significantly ...

44

Estimates of Kinetic Energy Dissipation under Breaking Waves  

Science Conference Proceedings (OSTI)

The dissipation of kinetic energy at the surface of natural water bodies has important consequences for many Physical and biochemical processes including wave dynamics, gas transfer, mixing of nutrients and pollutants, and photosynthetic ...

E.A. Terray; M.A. Donelan; Y.C. Agrawal; W.M. Drennan; K.K. Kahma; A.J. Williams; P.A. Hwang; S.A. Kitaigorodskii

1996-05-01T23:59:59.000Z

45

The Track Integrated Kinetic Energy of Atlantic Tropical Cyclones  

Science Conference Proceedings (OSTI)

In this paper the concept of track integrated kinetic energy (TIKE) is introduced as a measure of seasonal Atlantic tropical cyclone activity and applied to seasonal variability in the Atlantic. It is similar in concept to the more commonly used ...

V. Misra; S. DiNapoli; M. Powell

2013-07-01T23:59:59.000Z

46

ESS 2012 Peer Review - Amber Kinetics Flywheel Energy Storage...  

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

7700 RPM - Spin testing accelerates rotor to: 530 ms and 11,000 RPM - Rotor stores 10 kWh of kinetic energy @ 11,000 RPM (2x more than design speed) - All testing conducted in...

47

Kinetic energy principle and neoclassical toroidal torque in tokamaks  

Science Conference Proceedings (OSTI)

It is shown that when tokamaks are perturbed, the kinetic energy principle is closely related to the neoclassical toroidal torque by the action invariance of particles. Especially when tokamaks are perturbed from scalar pressure equilibria, the imaginary part of the potential energy in the kinetic energy principle is equivalent to the toroidal torque by the neoclassical toroidal viscosity. A unified description therefore should be made for both physics. It is also shown in this case that the potential energy operator can be self-adjoint and thus the stability calculation can be simplified by minimizing the potential energy.

Park, Jong-Kyu [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

2011-11-15T23:59:59.000Z

48

Kinetic Energy Principle And Neoclassical Toroidal Torque In Tokamaks  

Science Conference Proceedings (OSTI)

It is shown that when tokamaks are perturbed the kinetic energy principle is closely related to the neoclassical toroidal torque by the action invariance of particles. Especially when tokamaks are perturbed from scalar pressure equilibria, the imaginary part of the potential energy in the kinetic energy principle is equivalent to the toroidal torque by the Neoclassical Toroidal Viscosity (NTV). A unified description therefore should be made for both physics. It is also shown in this case that the potential energy operator can be self-adjoint and thus the stability calculation can be simplified by minimizing the potential energy

Jong-Kyu Park

2011-11-07T23:59:59.000Z

49

Friction, Brownian Motion, and Energy Dissipation Mechanisms in Adsorbed  

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

Friction, Brownian Motion, and Energy Dissipation Mechanisms in Adsorbed Friction, Brownian Motion, and Energy Dissipation Mechanisms in Adsorbed Molecules and Molecularly Thin Films: Heating, Electrostatic and Magnetic Effects January 15, 2014 4:00PM to 5:00PM Presenter Jacqueline Krim, North Carolina State University Location Building 440, Room A105-106 Type Seminar Series NST Nanoscience Colloquium Abstract: In the study of friction at the nanoscale, phononic, electrostatic, conduction electron and magnetic effects all contribute to the dissipation mechanisms [1,2]. Electrostatic and magnetic contributions are increasingly alluded to in the current literature, but remain poorly characterized. I will first overview the nature of these various contributions, and then report on our observations of magnetic and electrostatic contributions to

50

Philips Color Kinetics | Open Energy Information  

Open Energy Info (EERE)

Color Kinetics Color Kinetics Jump to: navigation, search Name Philips Color Kinetics Address 3 Burlington Woods Drive, 4th Floor Place Burlington, Massachusetts Zip 01803 Sector Efficiency Product LED lighting systems Website http://www.colorkinetics.com/ Coordinates 42.5005723°, -71.2042619° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.5005723,"lon":-71.2042619,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

51

On the Exchange of Kinetic and Magnetic Energy Between Clouds and the Interstellar Medium  

E-Print Network (OSTI)

We investigate, through 2D MHD numerical simulations, the interaction of a uniform magnetic field oblique to a moving interstellar cloud. In particular we explore the transformation of cloud kinetic energy into magnetic energy as a result of field line stretching. Some previous simulations have emphasized the possible dynamical importance of a ``magnetic shield'' formed around clouds when the magnetic field is perpendicular to the cloud motion (Jones et al. 1996, Miniati et al. 1998). It was not clear, however, how dependent those findings were to the assumed field configuration and cloud properties. To expand our understanding of this effect, we examine several new cases by varing the magnetic field orientation angle with respect to the cloud motion (\\theta), the cloud-background density contrast, and the cloud Mach number. We show that in 2D and with \\theta large enough, the magnetic field tension can become dominant in the dynamics of the motion of high density contrast, low Mach number clouds. In such cases a significant fraction of cloud kinetic energy can be transformed into magnetic energy with the magnetic pressure at the cloud nose exceeding the ram pressure of the impinging flow. We derive a characteristic timescale for this process of energy ``conversion''. We find also that unless the cloud motion is highly aligned to the magnetic field, reconnection through tearing mode instabilities in the cloud wake limit the formation of a strong flux rope feature following the cloud. Finally we attempt to interpret some observational properties of the magnetic field in view of our results.

Francesco Miniati; T. W. Jones; Dongsu Ryu

1999-01-05T23:59:59.000Z

52

Green Growth in Motion: Sharing Korea's Experience | Open Energy  

Open Energy Info (EERE)

Green Growth in Motion: Sharing Korea's Experience Green Growth in Motion: Sharing Korea's Experience Jump to: navigation, search Tool Summary Name: Green Growth in Motion: Sharing Korea's Experience Agency/Company /Organization: Global Green Growth Institute (GGGI) Sector: Climate Focus Area: Renewable Energy, Economic Development, People and Policy Topics: Finance, Implementation, Low emission development planning, -LEDS, Market analysis, Pathways analysis, Policies/deployment programs, Resource assessment Resource Type: Case studies/examples Website: www.gggi.org/sites/www.gggi.org/files/research/GreenGrowthInMotion.pdf Country: South Korea Cost: Free Eastern Asia Coordinates: 35.907757°, 127.766922° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.907757,"lon":127.766922,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

53

Macro and Micro Scale Electromagnetic Kinetic Energy Harvesting Generators  

E-Print Network (OSTI)

This paper is concerned with generators that harvest electrical energy from the kinetic energy present in the sensor nodes environment. These generators have the potential to replace or augment battery power which has a limited lifetime and requires periodic replacement which limits the placement and application of the sensor node.

Beeby, S -P; Torah, R -N; Koukharenko, E; Roberts, S; O'Donnell, T; Roy, S

2007-01-01T23:59:59.000Z

54

Transalta Energy Marketing (U.S) INC Answer to the Sierra Clubs Motion to  

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

Transalta Energy Marketing (U.S) INC Answer to the Sierra Clubs Transalta Energy Marketing (U.S) INC Answer to the Sierra Clubs Motion to Intervene Transalta Energy Marketing (U.S) INC Answer to the Sierra Clubs Motion to Intervene The motion to intervene fails to demonstrage that Sierra Club's interest expressed therin "may be directly affected by the outcome" of this proceeding, and the motion to intervene should be denied. Transalta Energy Marketing (U.S) INC Answer to the Sierra Clubs Motion to Intervene More Documents & Publications Application to Export Electric Energy OE Docket No. EA-216-C TransAlta Energy Marketing (U.S) Inc Sierra Club Withdrawal Motion Application to Export Electric Energy OE Docket No. EA-216-C TransAlta Energy Marketing (U.S) Inc . Canadian Electrical Association Comments Application to Export Electric Energy OE Docket No. EA-318-B AEP Energy

55

Definition: Mechanical energy | Open Energy Information  

Open Energy Info (EERE)

object due to its motion or position; the sum of an object's kinetic energy and potential energy.12 View on Wikipedia Wikipedia Definition . This acceleration is represented by...

56

Anomalous kinetic energy of a system of dust particles in a gas discharge plasma  

SciTech Connect

The system of equations of motion of dust particles in a near-electrode layer of a gas discharge has been formulated taking into account fluctuations of the charge of a dust particle and the features of the nearelectrode layer of the discharge. The molecular dynamics simulation of the system of dust particles has been carried out. Performing a theoretical analysis of the simulation results, a mechanism of increasing the average kinetic energy of dust particles in the gas discharge plasma has been proposed. According to this mechanism, the heating of the vertical oscillations of dust particles is initiated by induced oscillations generated by fluctuations of the charge of dust particles, and the energy transfer from vertical to horizontal oscillations can be based on the parametric resonance phenomenon. The combination of the parametric and induced resonances makes it possible to explain an anomalously high kinetic energy of dust particles. The estimate of the frequency, amplitude, and kinetic energy of dust particles are close to the respective experimental values.

Norman, G. E., E-mail: norman@ihed.ras.ru; Stegailov, V. V., E-mail: stegailov@gmail.com; Timofeev, A. V., E-mail: timofeevalvl@gmail.com [Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)

2011-11-15T23:59:59.000Z

57

Fragmentation of water by ion impact: Kinetic energy release spectra  

SciTech Connect

The fragmentation of isolated water molecules on collision with 450-keV Ar{sup 9+} has been studied using time-of-flight mass spectrometry employing multihit detection. The kinetic energy release spectrum for the dissociation of [H{sub 2}O]{sup 2+ White-Star} into (H{sup White-Star },H{sup +},O{sup +}) fragments has been measured where H{sup White-Star} is a neutral Rydberg hydrogen atom. Ab initio calculations are carried out for the lowest states of [H{sub 2}O]{sup q+} with q=2 and 3 to help interpret the kinetic energy release spectra.

Rajput, Jyoti; Safvan, C. P. [Department of Physics and Astrophysics, University of Delhi, Delhi 110007 (India); Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067 (India)

2011-11-15T23:59:59.000Z

58

Abyssal Eddy Kinetic Energy Levels in the Western North Pacific  

Science Conference Proceedings (OSTI)

An earlier observation of about 50 cm2 s?2 for the maximum abyssal (4000 m depth) eddy kinetic energy (KE) in the western North Pacific along 152°E, occurring in the vicinity of the Kuroshio Extension, is now supported by nearly two years of ...

Willeam J. Schmitz Jr.

1984-01-01T23:59:59.000Z

59

Comments on “Estimates of Kinetic Energy Dissipation under Breaking Waves”  

Science Conference Proceedings (OSTI)

It is noted that the results of recent experiments on the enhancement of turbulent kinetic energy (TKE) dissipation below surface waves can be stated as follows. TKE dissipation is enhanced by a factor 15Hws/z at depths 0.5Hws < z < 20Hws with ...

Gerrit Burgers

1997-10-01T23:59:59.000Z

60

Viscous Dissipation of Turbulence Kinetic Energy in Storms  

Science Conference Proceedings (OSTI)

In this note the magnitude of the viscous dissipation of turbulence kinetic energy in the surface layer of storms is investigated. It is shown that the layer-integrated dissipative heating is a cubic function of the wind speed. The magnitude of ...

Steven Businger; Joost A. Businger

2001-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Kinetic Energy Budget during Strong Jet Stream Activity over the Eastern United States  

Science Conference Proceedings (OSTI)

Kinetic energy budgets are computed during a cold air outbreak in association with strong jet stream activity over the eastern United States. The period is characterized by large generation of kinetic energy due to cross-contour flow. Horizontal ...

Henry E. Fuelberg; James R. Scoggins

1980-01-01T23:59:59.000Z

62

Kinetic Energy Budgets of a Subtropical Squall Line Determined from TAMEX Dual-Doppler Measurements  

Science Conference Proceedings (OSTI)

Dual-Doppler data collected during the Taiwan Area Mesoscale Experiment (TAMEX) are used to study the kinetic energy balance of a subtropical squall line over the Taiwan Straits. Values of each term in the kinetic energy budget equation are ...

Yeong-Jer Lin; Hsi Shen; Robert W. Pasken

1991-11-01T23:59:59.000Z

63

Split kinetic energy method for quantum systems with competing potentials  

SciTech Connect

For quantum systems with competing potentials, the conventional perturbation theory often yields an asymptotic series and the subsequent numerical outcome becomes uncertain. To tackle such a kind of problems, we develop a general solution scheme based on a new energy dissection idea. Instead of dividing the potential energy into 'unperturbed' and 'perturbed' terms, a partition of the kinetic energy is performed. By distributing the kinetic energy term in part into each individual potential, the Hamiltonian can be expressed as the sum of the subsystem Hamiltonians with respective competing potentials. The total wavefunction is expanded by using a linear combination of the basis sets of respective subsystem Hamiltonians. We first illustrate the solution procedure using a simple system consisting of a particle under the action of double {delta}-function potentials. Next, this method is applied to the prototype systems of a charged harmonic oscillator in strong magnetic field and the hydrogen molecule ion. Compared with the usual perturbation approach, this new scheme converges much faster to the exact solutions for both eigenvalues and eigenfunctions. When properly extended, this new solution scheme can be very useful for dealing with strongly coupling quantum systems. - Highlights: Black-Right-Pointing-Pointer A new basis set expansion method is proposed. Black-Right-Pointing-Pointer Split kinetic energy method is proposed to solve quantum eigenvalue problems. Black-Right-Pointing-Pointer Significant improvement has been obtained in converging to exact results. Black-Right-Pointing-Pointer Extension of such methods is promising and discussed.

Mineo, H.; Chao, Sheng D., E-mail: sdchao@spring.iam.ntu.edu.tw

2012-09-15T23:59:59.000Z

64

An Analysis of the Kinetic Energy Budget for Two Extratropical Cyclones: The Vertically Averaged Flow and the Vertical Shear Flow  

Science Conference Proceedings (OSTI)

An analysis of the kinetic energy budget is made for two intensely developing cyclones over North America. The principal kinetic energy source for the first cyclone is the net horizontal transport of kinetic energy across the boundaries of the ...

Jordan C. Alpert

1981-06-01T23:59:59.000Z

65

The Troposphere-to-Stratosphere Transition in Kinetic Energy Spectra and Nonlinear Spectral Fluxes as Seen in ECMWF Analyses  

Science Conference Proceedings (OSTI)

Global horizontal wavenumber kinetic energy spectra and spectral fluxes of rotational kinetic energy and enstrophy are computed for a range of vertical levels using a T799 ECMWF operational analysis. Above 250 hPa, the kinetic energy spectra ...

B. H. Burgess; Andre R. Erler; Theodore G. Shepherd

2013-02-01T23:59:59.000Z

66

Resistive-Glass Drift Tube for Use as a Controlled Kinetic Energy ...  

externally formed ions for spectroscopy and other applications. ... Controlled Kinetic Energy Ion Source for Miniature Ion Trap ... Chemical Sciences Division

67

Plasmadynamics and ionization kinetics of thermionic energy conversion  

DOE Green Energy (OSTI)

To reduce the plasma arc-drop, thermionic energy conversion is studied with both analytical and numerical tools. Simplifications are made in both the plasmadynamic and ionization-recombination theories. These are applied to a scheme proposed presently using laser irradiation to enhance the ionization kinetics of the thermionic plasma and thereby reduce the arc-drop. It is also predicted that it is possible to generate the required laser light from a thermionic-type cesium plasma. The analysis takes advantage of theoretical simplifications derived for the ionization-recombination kinetics. It is shown that large laser ionization enhancements can occur and that collisional cesium recombination lasing is expected. To complement the kinetic theory, a numerical method is developed to solve the thermionic plasma dynamics. To combine the analysis of ionization-recombination kinetics with the plasma dynamics of thermionic conversion, a finite difference computer program is constructed. It is capable of solving for both unsteady and steady thermionic converter behavior including possible laser ionization enhancement or atomic recombination lasing. A proposal to improve thermionic converter performance using laser radiation is considered. In this proposed scheme, laser radiation impinging on a thermionic plasma enhances the ionization process thereby raising the plasma density and reducing the plasma arc-drop. A source for such radiation may possibly be a cesium recombination laser operating in a different thermionic converter. The possibility of this being an energy efficient process is discussed. (WHK)

Lawless, J.L. Jr.; Lam, S.H.

1982-02-01T23:59:59.000Z

68

Yucca Mountain - U.S. Department of Energy's Response to the Motion for  

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

Yucca Mountain - U.S. Department of Energy's Response to the Motion Yucca Mountain - U.S. Department of Energy's Response to the Motion for Recusal/Disqualification Yucca Mountain - U.S. Department of Energy's Response to the Motion for Recusal/Disqualification Brief filed before the Nuclear Regulatory Commission in the proceeding on DOE's applciation to construct a high-level waste repository at Yucca Mountain, Nevada; DOE opposes the motion of Washington, South Carolina, Aiken County, and White Pine County to disqualify Commissioners Magwood and Ostendorff from voting on the appeal of the Atomic Safety and Licensing Board's denial of DOE's motion to withdraw its application. Yucca Mountain - U.S. Department of Energy's Response to the Motion for Recusal/Disqualification More Documents & Publications 3116 Public Meeting Summaries - November 2006

69

Wind for Schools Portal Motion Chart | Open Energy Information  

Open Energy Info (EERE)

Login | Sign Up Search Page Edit History Facebook icon Twitter icon Wind for Schools Portal Motion Chart Jump to: navigation, search Wind for Schools Portal Home...

70

Mesoscale Energy Spectra of Mei-Yu Front System. Part I: Kinetic Energy Spectra  

Science Conference Proceedings (OSTI)

The mesoscale kinetic energy (KE) spectra of Mei-Yu front system are investigated through idealized numerical simulations. In the mature stage, the upper tropospheric KE spectrum resembles a -3 power law for wavelengths between 1000 and 400 km and ...

Jun Peng; Lifeng Zhang; Yu Luo; Yun Zhang

71

OpenEI:Projects/Motion Charts | Open Energy Information  

Open Energy Info (EERE)

Charts Charts Jump to: navigation, search Contents 1 Motion Chart Creation for OpenEI Admin 2 Setting up the Data and Getting Embed Code 3 Create Your OpenEI Widget 4 Finish the Widget 5 Finished Product Motion Chart Creation for OpenEI Admin If you are an OpenEI administrator and are interested in creating a motion chart widget, you've come to the right place! Setting up the Data and Getting Embed Code The basic information about organizing your data, using Google Docs and Google's motion chart, and getting the embed code (Steps 1 to 3) is available here:Help:Motion_Chart The next steps are: Create Your OpenEI Widget Now that you have your code, its time to set-up your widget: Log-in at OpenEI In the search box, type Widget:Example and replace example with the name of your widget

72

CONSERVATIVE CASCADE OF KINETIC ENERGY IN COMPRESSIBLE TURBULENCE  

SciTech Connect

The physical nature of compressible turbulence is of fundamental importance in a variety of astrophysical settings. We investigate the question: 'At what scales does the mechanism of pressure-dilatation operate?' and present the first direct evidence that mean kinetic energy cascades conservatively beyond a transitional 'conversion' scale range despite not being an invariant of the dynamics. We use high-resolution 1024{sup 3} subsonic and transonic simulations. The key quantity we measure is the pressure-dilatation cospectrum, E{sup PD}(k), where we show that it decays at a rate faster than k{sup -1} in wavenumber in at least the subsonic and transonic regimes. This is sufficient to imply that mean pressure-dilatation acts primarily at large scales and that kinetic and internal energy budgets statistically decouple beyond a transitional scale range. However, we observe that small-scale dynamics remains highly compressible locally in space and that the statistical decoupling in the energy budgets is unrelated to the existence of a subsonic scale range. Our results suggest that an extension of Kolmogorov's inertial-range theory to compressible turbulence is possible.

Aluie, Hussein; Li Shengtai; Li, Hui [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

2012-06-01T23:59:59.000Z

73

THERMALIZATION OF THE ION KINETIC ENERGY IN A Ne GAS PUFF PINCH MODEL*  

E-Print Network (OSTI)

THERMALIZATION OF THE ION KINETIC ENERGY IN A Ne GAS PUFF PINCH MODEL* J. L. Giuliani, J. W Department of Energy/NNSA, Washington DC USA Full understanding of the dynamics, population kinetics, and energy budget of a K-shell radiating Z-pinch remains a challenging problem in high energy density plasma

74

The conservative cascade of kinetic energy in compressible turbulence  

E-Print Network (OSTI)

The physical nature of compressible turbulence is of fundamental importance in a variety of astrophysical settings. We present the first direct evidence that mean kinetic energy cascades conservatively beyond a transitional "conversion" scale-range despite not being an invariant of the compressible flow dynamics. We use high-resolution three-dimensional simulations of compressible hydrodynamic turbulence on $512^3$ and $1024^3$ grids. We probe regimes of forced steady-state isothermal flows and of unforced decaying ideal gas flows. The key quantity we measure is pressure dilatation cospectrum, $E^{PD}(k)$, where we provide the first numerical evidence that it decays at a rate faster than $k^{-1}$ as a function of wavenumber. This is sufficient to imply that mean pressure dilatation acts primarily at large-scales and that kinetic and internal energy budgets statistically decouple beyond a transitional scale-range. Our results suggest that an extension of Kolmogorov's inertial-range theory to compressible turbulence is possible.

Hussein Aluie; Shengtai Li; Hui Li

2011-07-28T23:59:59.000Z

75

The conservative cascade of kinetic energy in compressible turbulence  

E-Print Network (OSTI)

The physical nature of compressible turbulence is of fundamental importance in a variety of astrophysical settings. We present the first direct evidence that mean kinetic energy cascades conservatively beyond a transitional "conversion" scale-range despite not being an invariant of the compressible flow dynamics. We use high-resolution three-dimensional simulations of compressible hydrodynamic turbulence on $512^3$ and $1024^3$ grids. We probe regimes of forced steady-state isothermal flows and of unforced decaying ideal gas flows. The key quantity we measure is pressure dilatation cospectrum, $E^{PD}(k)$, where we provide the first numerical evidence that it decays at a rate faster than $k^{-1}$ as a function of wavenumber. This is sufficient to imply that mean pressure dilatation acts primarily at large-scales and that kinetic and internal energy budgets statistically decouple beyond a transitional scale-range. Our results suggest that an extension of Kolmogorov's inertial-range theory to compressible turbu...

Aluie, Hussein; Li, Hui

2011-01-01T23:59:59.000Z

76

Piezoelectric step-motion actuator  

DOE Patents (OSTI)

A step-motion actuator using piezoelectric material to launch a flight mass which, in turn, actuates a drive pawl to progressively engage and drive a toothed wheel or rod to accomplish stepped motion. Thus, the piezoelectric material converts electrical energy into kinetic energy of the mass, and the drive pawl and toothed wheel or rod convert the kinetic energy of the mass into the desired rotary or linear stepped motion. A compression frame may be secured about the piezoelectric element and adapted to pre-compress the piezoelectric material so as to reduce tensile loads thereon. A return spring may be used to return the mass to its resting position against the compression frame or piezoelectric material following launch. Alternative embodiment are possible, including an alternative first embodiment wherein two masses are launched in substantially different directions, and an alternative second embodiment wherein the mass is eliminated in favor of the piezoelectric material launching itself.

Mentesana; Charles P. (Leawood, KS)

2006-10-10T23:59:59.000Z

77

Heating and Kinetic Energy Dissipation in the NCAR Community Atmosphere Model  

Science Conference Proceedings (OSTI)

Conservation of energy and the incorporation of parameterized heating in an atmospheric model are discussed. Energy conservation is used to unify the treatment of heating and kinetic energy dissipation within the Community Atmosphere Model, ...

Byron A. Boville; Christopher S. Bretherton

2003-12-01T23:59:59.000Z

78

Time scales and pathways for kinetic energy relaxation in solvated proteins: Application to carbonmonoxy myoglobin  

E-Print Network (OSTI)

of ki- netic energy equipartitioning compared to that of the hydro- gen atoms. These backbone atomsTime scales and pathways for kinetic energy relaxation in solvated proteins: Application, the rates of kinetic energy partitioning for various elements of solvated carboxy-myoglobin were calculated

Straub, John E.

79

MHK Technologies/Kinetic Hydropower System KHPS | Open Energy Information  

Open Energy Info (EERE)

Kinetic Hydropower System KHPS Kinetic Hydropower System KHPS < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Verdantpower.jpg Technology Profile Primary Organization Verdant Power Project(s) where this technology is utilized *MHK Projects/Roosevelt Island Tidal Energy RITE *MHK Projects/Cornwall Ontario River Energy CORE Technology Resource Click here Current/Tidal Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 7/8: Open Water System Testing & Demonstration & Operation Technology Description Verdant Power's central technology is the Kinetic Hydropower System (KHPS), a water-to-wire system that consists of three main components: 1) KHPS TURBINE: a three-bladed horizontal-axis turbine with four major assemblies: a) Composite rotor with 3-fixed blades that rotate at the relatively slow and constant speed of approximately 40 RPM, with tip-speeds of 35 feet per second. This is well below normal water vessel propeller speeds and conventional hydropower turbine blade speeds. b) Sealed nacelle, pylon and passive yaw mechanism that is hydrodynamically designed to allow the turbine to self-rotate into the prevailing current (like a weathervane) so that the blades are optimally aligned to generate energy. c) Custom-designed drivetrain unit (with induction generator) enclosed within the nacelle that integrates the bearing housing with a special long-life planetary gearbox, with mechanical shaft seals and a minimum of sealed lubricants. d) Streambed mounting system that can vary depending on site conditions as a single drilled monopile, a single gravity-based structure, or a gravity-based triframe mount that supports 3 turbines. 2) UNDERWATER CABLING: low-voltage shielded cable of short distance; and shoreline switchgear vaults, control room, and interconnection point(s). 3) APPURTENANT FACILITIES: for navigation safety, such as Public Aides to Navigation (PATON) buoys and lighted warning signs, as well as instrumentation including Acoustic Doppler Current Profilers (ADCPs). In order to maximize the application of the KHPS within the global MHK resource, Verdant Power has designed the technology as a simple and uniquely scalable system that can be operated in tidal, river and ocean current settings. Possible KHPS installations range from distributed generation arrangements in near-shore urban and village settings to base power generation at offshore deepwater locales.

80

Utilization of rotor kinetic energy storage for hybrid vehicles  

DOE Patents (OSTI)

A power system for a motor vehicle having an internal combustion engine, the power system comprises an electric machine (12) further comprising a first excitation source (47), a permanent magnet rotor (28) and a magnetic coupling rotor (26) spaced from the permanent magnet rotor and at least one second excitation source (43), the magnetic coupling rotor (26) also including a flywheel having an inertial mass to store kinetic energy during an initial acceleration to an operating speed; and wherein the first excitation source is electrically connected to the second excitation source for power cycling such that the flywheel rotor (26) exerts torque on the permanent magnet rotor (28) to assist braking and acceleration of the permanent magnet rotor (28) and consequently, the vehicle. An axial gap machine and a radial gap machine are disclosed and methods of the invention are also disclosed.

Hsu, John S. (Oak Ridge, TN)

2011-05-03T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Mass independent kinetic energy reducing inlet system for vacuum environment  

Science Conference Proceedings (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

82

A new water anomaly: the temperature dependence of the proton mean kinetic energy  

E-Print Network (OSTI)

The mean kinetic energy of protons in water is determined by Deep Inelastic Neutron Scattering experiments, performed above and below the temperature of maximum density and in the supercooled phase. The temperature dependence of this energy shows an anomalous behavior, as it occurs for many water properties. In particular two regions of maximum kinetic energy are identified: the first one, in the supercooled phase in the range 269 K - 272 K, and a second one above 273 K. In both these regions the measured proton kinetic energy exceedes the theoretical prediction based on a semi-classical model. Noteworthy, the proton mean kinetic energy has a maximum at 277 K, the temperature of the maximum density of water. In the supercooled metastable phase the measured mean kinetic energy and the proton momentum distribution clearly indicate proton delocalization between two H-bonded oxygens.

Davide Flammini; Fabio Bruni; Maria Antonietta Ricci

2009-01-27T23:59:59.000Z

83

Mesoscale Energy Spectra of the Mei-Yu Front System. Part I: Kinetic Energy Spectra  

Science Conference Proceedings (OSTI)

The mesoscale kinetic energy (KE) spectra of the mei-yu front system are investigated through idealized numerical simulations. In the mature stage, the upper-tropospheric KE spectrum resembles a ?3 power law for wavelengths between 1000 and 400 km ...

Jun Peng; Lifeng Zhang; Yu Luo; Yun Zhang

2014-01-01T23:59:59.000Z

84

Motion to Intervene Out of Time of Sumas Energy 2, Inc on Proposed  

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

of Sumas Energy 2, Inc on Proposed of Sumas Energy 2, Inc on Proposed Open-Access Requirement International Electric Transmission Facilities and Delegation to the Federal Energy Regulatory Commission. Motion to Intervene Out of Time of Sumas Energy 2, Inc on Proposed Open-Access Requirement International Electric Transmission Facilities and Delegation to the Federal Energy Regulatory Commission. Motion to intervene out ouf time by Sumas Energy 2, Inc on the proposed change in open-access requirement international electric transmission facilities and delegation to the Federal Energy Regulatory Commission. FE Docket No 99-1. Proposed open-access requirement international electric transmission facilities and delegation to the Federal Energy Regulatory Commission. More Documents & Publications

85

The Kinetic Energy Budgets of Two Severe Storm Producing Extratropical Cyclones  

Science Conference Proceedings (OSTI)

Eulerian kinetic energy budgets for the synoptic-scale flow over North America were computed for two cases of cyclone development associated with severe prefrontal convection. Horizontal flux convergence constitutes the major energy source in ...

Franklin R. Robertson; Phillip J. Smith

1980-02-01T23:59:59.000Z

86

Motion to intervene and comments of the energy services group of  

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

intervene and comments of the energy services group of intervene and comments of the energy services group of Hydro-Quebec and H.Q. Energy Services (U.S.) Inc, on FE 99-1 Motion to intervene and comments of the energy services group of Hydro-Quebec and H.Q. Energy Services (U.S.) Inc, on FE 99-1 Motion to intervene and comments of the energy services group of Hydro-Quebec and H.Q. Energy Services, Inc on FE99-1. In July 1999, the DOE issued a notice of its intention to amend existing presidential permits to require the holders of such permits to provide non-discriminatory open access transmission services. Motion to intervene and comments of the energy services group of hydro-quebec and h.q energy services (u.s) inc More Documents & Publications EA-182-A H.Q Energy Services (U.S) EA-182 H.Q Energy Services (U.S)

87

Energy of one-dimensional diatomic elastic granular gas: Theory and molecular dynamics Simulation  

E-Print Network (OSTI)

One-dimensional ideal diatomic gas is simulated through possible types of motion of a molecule. Energy of each type of its motion is calculated from theory and numerical method. Calculation of kinetic energy of an atom in translational-vibrational motion is not analytically simple, but it can be solved by numerical method of molecular dynamic simulation. This paper justifies that kinetic energy of a diatomic molecule can be determined by two different approaches. The first is the sum of kinetic energy of each atom and second is the sum of kinetic energy of translational motion and vibrational motion.

Khotimah, Siti Nurul; Widayani,; Waris, Abdul

2011-01-01T23:59:59.000Z

88

A Two?Week Evaluation of Available Potential Energy and Kinetic Energy from NMC and ECMWF Analyses  

Science Conference Proceedings (OSTI)

Available potential energy and kinetic energy distributions for the Northern Hemisphere computed from the FGGE Level IIIa analyses produced at the National Meteorological Center (NMC) and the Level IIIb analyses prepared at the European Centre ...

Thomas L. Koehler; Linda M. Whittaker

1985-05-01T23:59:59.000Z

89

Energy Conservation Tests of a Coupled Kinetic-kinetic Plasma-neutral Transport Code  

SciTech Connect

A Monte Carlo neutral transport routine, based on DEGAS2, has been coupled to the guiding center ion-electron-neutral neoclassical PIC code XGC0 to provide a realistic treatment of neutral atoms and molecules in the tokamak edge plasma. The DEGAS2 routine allows detailed atomic physics and plasma-material interaction processes to be incorporated into these simulations. The spatial pro le of the neutral particle source used in the DEGAS2 routine is determined from the uxes of XGC0 ions to the material surfaces. The kinetic-kinetic plasma-neutral transport capability is demonstrated with example pedestal fueling simulations.

D.P. Stotler, C.S. Chang, S.H. Ku, J. Lang and G. Park

2012-08-29T23:59:59.000Z

90

Device to convert the energy of a fluid in motion  

SciTech Connect

A device is disclosed to convert wave energy into mechanical energy, comprises a buoyant structure whose upper portion is in the region of wave action but whose lower section is below the region of wave action, so that the water adjacent the upper and lower sections of the structure has vertical movement relative to itself. This relative movement is used to rotate a vertical shaft having radially extending horizontal axles on which panels are pivotally mounted. Ballast and/or floats are used to impose on the panels a bias tending to maintain them horizontal. The relative movement of the water is used to impel fluid vertically relative to the panels in alternatingly opposite directions; and the bias imposed by the ballast and/or floats thus causes a planing wing action of the panels which impels the shaft in rotation in one direction regardless of the direction of the movement of the impelling fluid. The floating structure can rise and fall with the waves, in which case the blade are disposed at the lower end of the device, in the still water; or the device can be stationary in the water, in which case the blades are subject to a fluid such as the water itself or air impelled by the water, at the upper end of the device.

de la Roche Kerandraon, O.; Guillaume, P.; Paroldi, D.

1983-09-27T23:59:59.000Z

91

Budgets of Divergent and Rotational Kinetic Energy during Two Periods of Intense Convection  

Science Conference Proceedings (OSTI)

Budgets of divergent and rotational components of kinetic energy (KD and KR) are investigated for two periods of intense convection. Derivations of the budget equations are presented for limited volumes in terms of VD and VR. The two periods ...

Dennis E. Buechler; Henry E. Fuelberg

1986-01-01T23:59:59.000Z

92

Seasonal and Spatial Variability of Near-Inertial Kinetic Energy from Historical Moored Velocity Records  

Science Conference Proceedings (OSTI)

Temporal and spatial patterns of near-inertial kinetic energy (KEmoor) are investigated in a database of 2480 globally distributed, moored current-meter records (deployed on 690 separate moorings) and compared with the distribution of wind-forced ...

Matthew H. Alford; Maya Whitmont

2007-08-01T23:59:59.000Z

93

A Surface Flux Parameterization Based on the Vertically Averaged Turbulence Kinetic Energy  

Science Conference Proceedings (OSTI)

A new bulk transfer formulation for the surface turbulent fluxes of momentum, heat, and moisture has been developed by using the square root of the vertically averaged turbulent kinetic energy (TKE) in the atmospheric boundary layer as a velocity ...

Changan Zhang; David A. Randall; Chin-Hoh Moeng; Mark Branson; Kerry A. Moyer; Qing Wang

1996-11-01T23:59:59.000Z

94

Measurement of Turbulent Kinetic Energy Dissipation Rate with a Lagrangian Float  

Science Conference Proceedings (OSTI)

This study tests the ability of a neutrally buoyant float to estimate the dissipation rate of turbulent kinetic energy ? from its vertical acceleration spectrum using an inertial subrange method. A Lagrangian float was equipped with a SonTek ...

Ren-Chieh Lien; Eric A. D'Asaro

2006-07-01T23:59:59.000Z

95

Buoyant Production and Consumption of Turbulence Kinetic Energy in Cloud-Topped Mixed Layers  

Science Conference Proceedings (OSTI)

Entrainment closure theories for mixed-layer models entail assumptions about how the net rate of buoyant production of turbulence kinetic energy is partitioned into gross production and consumption. Three alternative partitioning theories are ...

David A. Randall

1984-02-01T23:59:59.000Z

96

Roles of Divergent and Rotational Winds in the Kinetic Energy Balance Intense Convective Activity  

Science Conference Proceedings (OSTI)

Contibutions of divergent and rotational wind components to the synoptic-scale kinetic energy balance are described using rawinsonde data at 3 and 6 h intervals from NASA’s fourth Atmospheric Variability Experiment (AVE 4). Two intense ...

Henry E. Fuelberg; Peter A. Browning

1983-11-01T23:59:59.000Z

97

Surface Circulation and Kinetic Energy Distributions in the Southern Hemisphere Oceans from FGGE Drifting Buoys  

Science Conference Proceedings (OSTI)

Trajectories of approximately 300 satellite-tracked drifting buoys deployed throughout the Southern Hemisphere oceans during the Fiat GARP Global Experiment (FGGE) have been analyzed to infer the mean surface circulation and kinetic energy ...

Steven L. Patterson

1985-07-01T23:59:59.000Z

98

The Kinetic Energy of Hailfalls. Part IV: Patterns of Hailpad and Radar Data  

Science Conference Proceedings (OSTI)

Ground-and radar-measured patterns of hail kinetic energy from eight hailstorms have been compared. The radar patterns were shifted horizontally in such a way that the correlation coefficient between the ground and radar data reaches a maximum. ...

W. Schmid; H. H. Schiesser; A. Waldvogel

1992-10-01T23:59:59.000Z

99

Using a Stochastic Kinetic Energy Backscatter Scheme to Improve MOGREPS Probabilistic Forecast Skill  

Science Conference Proceedings (OSTI)

An improved stochastic kinetic energy backscatter scheme, version 2 (SKEB2) has been developed for the Met Office Global and Regional Ensemble Prediction System (MOGREPS). Wind increments at each model time step are derived from a streamfunction ...

Warren J. Tennant; Glenn J. Shutts; Alberto Arribas; Simon A. Thompson

2011-04-01T23:59:59.000Z

100

Reflectivity, Rain Rate, and Kinetic Energy Flux Relationships Based on Raindrop Spectra  

Science Conference Proceedings (OSTI)

The relationships between radar reflectivity factor Z, rainfall rate R, and rainfall kinetic energy flux E were analyzed based on a multiyear raindrop spectra dataset recorded by a Joss–Waldvogel disdrometer in the Goodwin Creek research ...

Matthias Steiner; James A. Smith

2000-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Evaluation of the Kinetic Energy Approach for Modeling Turbulent Fluxesin Stratocumulus  

Science Conference Proceedings (OSTI)

The modeling of vertical mixing by a turbulence scheme on the basis of prognostic turbulent kinetic energy (E) and a diagnostic length scale (l) is investigated with particular emphasis on the representation of entrainment. The behavior of this E–...

G. Lenderink; A. A. M. Holtslag

2000-01-01T23:59:59.000Z

102

On Measuring the Terms of the Turbulent Kinetic Energy Budget from an AUV  

Science Conference Proceedings (OSTI)

The terms of the steady-state, homogeneous turbulent kinetic energy budgets are obtained from measurements of turbulence and fine structure from the small autonomous underwater vehicle (AUV) Remote Environmental Measuring Units (REMUS). The ...

Louis Goodman; Edward R. Levine; Rolf G. Lueck

2006-07-01T23:59:59.000Z

103

Microprocessor Field Impactometer Calibration: Do We Measure Drops’ Momentum or Their Kinetic Energy?  

Science Conference Proceedings (OSTI)

This study presents the construction and calibration of a low-cost piezoelectric microprocessor impactometer designed for the field measurements of the rainfall kinetic energy (KE) flux. Its precise calibration was performed in laboratory ...

Pawe? Licznar; Janusz ?omotowski; S?awomir B?o?ski; Grzegorz J. Ciach

2008-05-01T23:59:59.000Z

104

Influences of ENSO on Western North Pacific Tropical Cyclone Kinetic Energy and Its Meridional Transport  

Science Conference Proceedings (OSTI)

This study investigates the influences of ENSO on tropical cyclone (TC) kinetic energy and its meridional transport in the western North Pacific (WNP) using the TC wind field obtained after a method for removing TC vortices from reanalysis data is ...

Yao Ha; Zhong Zhong; Yijia Hu; Xiuqun Yang

2013-01-01T23:59:59.000Z

105

Derivation of Turbulent Kinetic Energy from a First-Order Nonlocal Planetary Boundary Layer Parameterization  

Science Conference Proceedings (OSTI)

Turbulent kinetic energy (TKE) is derived from a first-order planetary boundary layer (PBL) parameterization for convective boundary layers: the nonlocal K-profile Yonsei University (YSU) PBL. A parameterization for the TKE equation is developed ...

Hyeyum Hailey Shin; Song-You Hong; Yign Noh; Jimy Dudhia

2013-06-01T23:59:59.000Z

106

The Kinetic Energy of Hailfalls. Part III: Sampling Errors Inferred, from Radar Data  

Science Conference Proceedings (OSTI)

The representativeness of hailfall kinetic energies derived from point measurements of networks is studied by means of radar data of hail cells. The 202 cells were observed within a radius of 60 km from the 10 cm radar. Different Cartesian ...

A. Waldvogel; W. Schmid

1982-09-01T23:59:59.000Z

107

Wind turbines convert the kinetic energy in moving air into rotational energy, which in turn is converted  

E-Print Network (OSTI)

Wind turbines convert the kinetic energy in moving air into rotational energy, which in turn the wind doesn't blow? Wind Power on the Community Scale Renewable Energy Research Laboratory, University Energy Research Laboratory brings you this series of fact sheets about Wind Power on the community scale

Massachusetts at Amherst, University of

108

Amber Kinetics, Inc. Smart Grid Demonstration Project | Open Energy  

Open Energy Info (EERE)

Kinetics, Inc. Smart Grid Demonstration Project Kinetics, Inc. Smart Grid Demonstration Project Jump to: navigation, search Project Lead Amber Kinetics, Inc. Country United States Headquarters Location Fremont, California Recovery Act Funding $4,000,000.00 Total Project Value $10,000,000.00 Coordinates 37.5482697°, -121.9885719° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

109

A Kinetic Energy Budget and Internal Instabilities in the Fine Resolution Antarctic Model  

Science Conference Proceedings (OSTI)

An energy analysis of the Fine Resolution Antarctic Model (FRAM) reveals the instability processes in the model. The main source of time-mean kinetic energy is the wind stress and the main sink is transfer to mean potential energy. The wind ...

V. O. Ivchenko; A. M. Treguier; S. E. Best

1997-01-01T23:59:59.000Z

110

Energy and equations of motion in a tentative theory of gravity with a privileged reference frame  

E-Print Network (OSTI)

Based on a tentative interpretation of gravity as a pressure force, a scalar theory of gravity was previously investigated. It assumes gravitational contraction (dilation) of space (time) standards. In the static case, the same Newton law as in special relativity was expressed in terms of these distorted local standards, and was found to imply geodesic motion. Here, the formulation of motion is reexamined in the most general situation. A consistent Newton law can still be defined, which accounts for the time variation of the space metric, but it is not compatible with geodesic motion for a time-dependent field. The energy of a test particle is defined: it is constant in the static case. Starting from 'dust', a balance equation is then derived for the energy of matter. If the Newton law is assumed, the field equation of the theory allows to rewrite this as a true conservation equation, including the gravitational energy. The latter contains a Newtonian term, plus the square of the relative rate of the local velocity of gravitation waves (or that of light), the velocity being expressed in terms of absolute standards.

Mayeul Arminjon

2007-09-04T23:59:59.000Z

111

Subharmonic Energy Transfer from the Semidiurnal Internal Tide to Near-Diurnal Motions over Kaena Ridge, Hawaii  

Science Conference Proceedings (OSTI)

Nonlinear energy transfers from the semidiurnal internal tide to high-mode, near-diurnal motions are documented near Kaena Ridge, Hawaii, an energetic generation site for the baroclinic tide. Data were collected aboard the Research Floating ...

Oliver M. Sun; Robert Pinkel

2013-04-01T23:59:59.000Z

112

Utilization of rotor kinetic energy storage for hybrid ...  

Flywheel Energy Storage Device for Hybrid and Electric Vehicles: Abstract: A power system for a motor vehicle having an internal combustion engine, ...

113

Free energy functions in protein structural stability and folding kinetics.  

E-Print Network (OSTI)

??The accuracy of the theoretical description of protein folding and protein interactions is directly related to the accuracy of free energy functions developed for describing… (more)

Morozov, Alexandre V., 1973-

2009-01-01T23:59:59.000Z

114

Verdant-Kinetic Hydropower System | Open Energy Information  

Open Energy Info (EERE)

Island Tidal Energy Technology Resource CurrentTidal Technology Type Axial Flow Turbine Technology Readiness Level TRL 78: Open Water System Testing & Demonstration &...

115

Influence of the Richtmyer-Meshkov instability on the kinetic energy spectrum.  

Science Conference Proceedings (OSTI)

The fluctuating kinetic energy spectrum in the region near the Richtmyer-Meshkov instability (RMI) is experimentally investigated using particle image velocimetry (PIV). The velocity field is measured at a high spatial resolution in the light gas to observe the effects of turbulence production and dissipation. It is found that the RMI acts as a source of turbulence production near the unstable interface, where energy is transferred from the scales of the perturbation to smaller scales until dissipation. The interface also has an effect on the kinetic energy spectrum farther away by means of the distorted reflected shock wave. The energy spectrum far from the interface initially has a higher energy content than that of similar experiments with a flat interface. These differences are quick to disappear as dissipation dominates the flow far from the interface.

Weber, Christopher R. (University of Wisconsin-Madison, Madison, WI)

2010-09-01T23:59:59.000Z

116

Estimates of Mass, Momentum and Kinetic Energy Fluxes of the Gulf Stream  

Science Conference Proceedings (OSTI)

Mass, momentum and kinetic-energy fluxes in the Gulf Stream have been estimated from hydrographic data taken by Fuglister in the Gulf Stream ’60 project; the data cover the Stream as it flows eastward, from south of Georges Bank to the Grand ...

N. P. Fofonoff; M. M. Hall

1983-10-01T23:59:59.000Z

117

Differences between Kinetic Energy Budget Terms Derived from SESAME and NWS Data Sets  

Science Conference Proceedings (OSTI)

Upper air data collected during AVE-SESAME 1, 1200 GMT 10 April 1200 GMT 11 April 1979, are used to detect differences between calculations of kinetic energy budget terms derived from two sets of analyses. Barnes's objective analysis scheme is ...

Dayton G. Vincent; Thomas Q. Carney

1984-11-01T23:59:59.000Z

118

Impact of Various Processes on the Transient Evolution of Spectral Kinetic Energies  

Science Conference Proceedings (OSTI)

Geopotential height fields for nine winters (1967/68–1975/76) and summers on three levels (300, 500, 1000 mb), provided by the German Weather Service, are used to compute daily budgets of kinetic energy (Km) for single zonal wavenumbers m within ...

Heinz-Dieter Schilling

1990-08-01T23:59:59.000Z

119

Kinetic Energy Budget for the Madden–Julian Oscillation in a Multiscale Framework  

Science Conference Proceedings (OSTI)

A kinetic energy budget for the Madden–Julian oscillation (MJO) is established in a three-scale framework. The three scales are the zonal mean, the MJO scale with wavenumbers 1–4, and the small scale with wavenumbers larger than 4. In the ...

Lei Zhou; Adam H. Sobel; Raghu Murtugudde

2012-08-01T23:59:59.000Z

120

Various Kinetic Energy Characteristics of Hailpatterns in the Grossversuch IV Experiment  

Science Conference Proceedings (OSTI)

A regularly spaced 3.8 km2 mesh hailpad network covers 800 km2 in the Grossversuch IV Experiment in Switzerland and allows the recording of distinct hailpatterns and the calculation of their kinetic energy. With natural hailfall data over four ...

Jean François Mezeix; Nadie Doras

1981-04-01T23:59:59.000Z

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


121

A Kinetic Energy Analysis of a microburst-Producing Thunderstorm Based on JAWS Dual-Doppler Data  

Science Conference Proceedings (OSTI)

Dual-Doppler data collected from 1646 to 1648 MDT 14 July 1982 in Colorado are used to study the kinetic energy budget of a microburst-producing thunderstorm during its mature stage. Values of each term in the kinetic energy budget equation are ...

Yeong-jer Lin; John A. Coover

1988-10-01T23:59:59.000Z

122

Plasma Kinetic Theory  

Science Conference Proceedings (OSTI)

Kinetic Theory / Proceedings of the Ninth Carolus Magnus Summer School on Plasma and Fusion Energy Physics

B. Weyssow

123

Coarse Graining the Vorticity Equation in the ECMWF Integrated Forecasting System: The Search for Kinetic Energy Backscatter  

Science Conference Proceedings (OSTI)

Stochastic kinetic energy backscatter parameterization schemes are now widely used in ensemble prediction systems to account for random error associated with excessive dissipation and unrepresented energy backscatter in numerical weather ...

G. J. Shutts

2013-04-01T23:59:59.000Z

124

Electromagnetic radiation, motion of a particle and energy-mass relation  

E-Print Network (OSTI)

Equation of motion of an uncharged arbitrarily shaped dust particle under the effects of (stellar) electromagnetic radiation and thermal emission is derived. The resulting relativistically covariant equation of motion is expressed in terms of standard optical parameters. Relations between energy and mass of the incoming and outgoing radiation are obtained, together with relations between radiation energy and mass of the particle. The role of the diffraction nicely fits the relativistic formulation of the momentum of the outgoing radiation. The inequality 0 radiation pressure, integrated over stellar spectrum). The condition for the P-R effect is $\\vec{p}'_{o}$ = (1 - $\\bar{Q}'_{pr, 1} / \\bar{Q}'_{ext}$) $\\vec{p}'_{i}$, where $\\vec{p}'_{i}$ and $\\vec{p}'_{o}$ are incoming and outgoing radiation momenta (per unit time) measured in the proper frame of reference of the particle. The case of "perfectly absorbing spherical dust particle", within geometrical optics approximation, corresponds to the condition $\\vec{p}'_{o}$ = 0.5 $\\vec{p}'_{i}$. As for arbitrarily shaped dust particle, the condition 0 radiation pressure components. The condition can add a new information to the results obtained from observations, measurements and numerical calculations of the optical properties of the particle.

J. Klacka

2008-07-18T23:59:59.000Z

125

Energy stability analysis for a hybrid fluid-kinetic plasma model  

E-Print Network (OSTI)

In plasma physics, a hybrid fluid-kinetic model is composed of a magnetohydrodynamics (MHD) part that describes a bulk fluid component and a Vlasov kinetic theory part that describes an energetic plasma component. While most hybrid models in the plasma literature are non-Hamiltonian, this paper investigates a recent Hamiltonian variant in its two-dimensional configuration. The corresponding Hamiltonian structure is described along with its Casimir invariants. Then, the energy-Casimir method is used to derive explicit sufficient stability conditions, which imply a stable spectrum and suggest nonlinear stability.

Philip J. Morrison; Emanuele Tassi; Cesare Tronci

2013-06-11T23:59:59.000Z

126

A 6-Yr Climatology of Vertical Mean and Shear Components of Kinetic Energy for the Australian–South Pacific Jet Stream  

Science Conference Proceedings (OSTI)

The climatology of the kinetic energy associated with the subtropical jet over the Australian–South Pacific region is investigated for a 6-yr period, January 1985–December 1990, using monthly mean data. The total kinetic energy (TKE) is ...

Matthew D. Eastin; Dayton G. Vincent

1998-02-01T23:59:59.000Z

127

Multiplication of high-energy electrons in irradiated materials studied using the Boltzmann kinetic equation  

SciTech Connect

Processes involved in the formation of electron collision cascades created by nonrelativistic high-energy electrons, which can develop in materials exposed to electron and gamma radiation fluxes, have been considered. The problem is solved using the Boltzmann kinetic equation for high-energy electrons moving in a medium. A model scattering indicatrix is constructed for this equation with an arbitrary potential of interaction between colliding particles. Using this scattering indicatrix, the distribution of the particle energies is obtained. Based on this energy distribution (with an arbitrary interparticle interaction potential), a cascade function is found that describes the multiplication of knock-out electrons (electron cascade) generated when a high-energy electron with a certain energy is scattered on the electron subsystem of the irradiated material. The cascade function has been calculated for the Coulomb potential of the interaction between a high-energy electron and atomic-shell electrons.

Ryazanov, A. I., E-mail: ryazanoff@eomail.ru; Mogilyuk, T. I.; Semenov, E. V. [National Research Centre Kurchatov Institute (Russian Federation)

2012-04-15T23:59:59.000Z

128

The representation of rainfall drop-size distribution and kinetic energy Hydrology and Earth System Sciences, 8(5), 10011007 (2004) EGU  

E-Print Network (OSTI)

The representation of rainfall drop-size distribution and kinetic energy 1001 Hydrology and Earth-size distribution and kinetic energy Neil I. Fox Department of Soil, Environmental and Atmospheric Sciences373 Mc component of drop velocity. Keywords: drop-size distribution, drop kinetic energy, soil erosion Introduction

Paris-Sud XI, Université de

129

Turbulent Kinetic Energy in the Oklahoma City Urban Environment  

DOE Green Energy (OSTI)

A major field experiment, Joint URBAN 2003 (JU2003), was conducted in Oklahoma City in July 2003 to collect meteorological and tracer data sets for evaluating dispersion models in urban areas. The Department of Homeland Security and the Defense Threat Reduction Agency were the primary sponsors of JU2003. Investigators from five Department of Energy national laboratories, several other government agencies, universities, private companies, and international agencies conducted the experiment. Observations to characterize the meteorology in and around the urban area complemented the observation of the dispersion of SF6, an inert tracer gas. Over one hundred threedimensional sonic anemometers were deployed in and around the urban area to monitor wind speed, direction, and turbulence fluxes during releases of SF6. Sonic deployment locations included a profile of eight sonic anemometers mounted on a crane less than 1 km north of the central business district (CBD). Using data from these and other sonic anemometers deployed in the urban area, we can quantify the effect of the urban area on atmospheric turbulence and compare results seen in OKC to those in other urban areas to assess the parameters typically used in parameterizations of urban turbulence.

Lundquist, J; Leach, M; Gouveia, F

2004-06-24T23:59:59.000Z

130

New Kinetic Equations and Bogolyubov Energy Spectrum in a Fermi Quantum Plasma  

SciTech Connect

New type of quantum kinetic equations of the Fermi particles are derived. The Bogolyubov's type of dispersion relation, which is valid for the Bose fluid, is disclosed. Model of neutral Bose atoms in dense strongly coupled plasmas with attractive interaction is discussed. A set of fluid equations describing the quantum plasmas is obtained. Furthermore, the equation of the internal energy of degenerate Fermi plasma particles is derived.

Tsintsadze, Nodar L. [Department of Plasma Physics, E. Andronikashvili Institute of Physics, Tbilisi (Georgia); Tsintsadze, Levan N. [Graduate School of Science, Hiroshima University, Higashi-Hiroshima (Japan)

2009-10-08T23:59:59.000Z

131

Microscopic approach of fission dynamics applied to fragment kinetic energy and mass distributions in 238U  

E-Print Network (OSTI)

The collective dynamics of low energy fission in 238U is described within a time-dependent formalism based on the Gaussian Overlap Approximation of the time-dependent Generator Coordinate Method. The intrinsic deformed configurations of the nucleus are determined from the self-consistent Hartree-Fock-Bogoliubov procedure employing the effective force D1S with constraints on the quadrupole and octupole moments. Fragment kinetic energy and mass distributions are calculated and compared with experimental evaluations. The effect of the collective dynamics along the fission paths and the influence of initial conditions on these distributions are analyzed and discussed.

H. Goutte; J. F. Berger; P. Casoli; D. Gogny

2005-02-01T23:59:59.000Z

132

Development of symmetry-resolved zero-kinetic-energy photoelectron spectroscopy for probing multielectron processes  

Science Conference Proceedings (OSTI)

A new experimental setup for probing multielectron processes in molecular inner-shell ionization regions has been developed. Symmetry-resolved zero-kinetic-energy (ZEKE) spectra have been measured by scanning the photon energy along with monitoring the intensity of the coincidence signals between ZEKE electrons and fragment ions detected at 0 deg. and 90 deg. relative to the electric vector of the light. The actual performance of the method is illustrated by using it to reveal the symmetry decomposition of the multielectron processes, such as double excitations and shake-up satellites, in the K-shell ionization region of nitrogen.

Gejo, T.; Nakamura, E.; Shigemasa, E. [UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585 (Japan)

2006-03-15T23:59:59.000Z

133

The Three-Dimensional Structure of Perturbation Kinetic Energy and Its Relationship to the Zonal Wind Field  

Science Conference Proceedings (OSTI)

We seek relationships between the perturbation kinetic energy (PKE), the zonal wind, and outgoing longwave radiation. It is found that the mean low-level PKE extratropical maxima are located at the “atmospheric centers of action” (e.g., the ...

Peter J. Webster; Song Yang

1989-10-01T23:59:59.000Z

134

A Semigeostrophic Eady-Wave Frontal Model Incorporating Momentum Diffusion. Part II: Kinetic Energy and Enstrophy Dissipation  

Science Conference Proceedings (OSTI)

Momentum diffusion has been introduced into a semigeostrophic Eady-wave frontal model by Blumen (Part I). This model is used to determine the kinetic energy and enstrophy dissipations within a frontal zone that extends from the ground to a ...

William Blumen

1990-12-01T23:59:59.000Z

135

The Horizontal Kinetic Energy Spectrum and Spectral Budget Simulated by a High-Resolution Troposphere–Stratosphere–Mesosphere GCM  

Science Conference Proceedings (OSTI)

Horizontal kinetic energy spectra simulated by high-resolution versions of the Geophysical Fluid Dynamics Laboratory SKYHI middle-atmosphere general circulation model are examined. The model versions considered resolve heights between the ground ...

John N. Koshyk; Kevin Hamilton

2001-02-01T23:59:59.000Z

136

Barotropic Impacts of Surface Friction on Eddy Kinetic Energy and Momentum Fluxes: An Alternative to the Barotropic Governor  

Science Conference Proceedings (OSTI)

As the surface drag is increased in a comprehensive general circulation model (GCM), the upper-level zonal winds decrease and eddy momentum flux convergence into the jet core increases. Globally averaged eddy kinetic energy decreases, a response ...

Elizabeth A. Barnes; Chaim I. Garfinkel

2012-10-01T23:59:59.000Z

137

Internal Swell Generation: The Spatial Distribution of Energy Flux from the Wind to Mixed Layer Near-Inertial Motions  

Science Conference Proceedings (OSTI)

The energy flux from the wind to inertial mixed layer motions is computed for all oceans from 50°S to 50°N for the years 1996–99. The wind stress, ?, is computed from 6-h, 2.5°-resolution NCEP–NCAR global reanalysis surface winds. The inertial ...

Matthew H. Alford

2001-08-01T23:59:59.000Z

138

Calculating kinetics parameters and reactivity changes with continuous-energy Monte Carlo  

SciTech Connect

The iterated fission probability interpretation of the adjoint flux forms the basis for a method to perform adjoint weighting of tally scores in continuous-energy Monte Carlo k-eigenvalue calculations. Applying this approach, adjoint-weighted tallies are developed for two applications: calculating point reactor kinetics parameters and estimating changes in reactivity from perturbations. Calculations are performed in the widely-used production code, MCNP, and the results of both applications are compared with discrete ordinates calculations, experimental measurements, and other Monte Carlo calculations.

Kiedrowski, Brian C [Los Alamos National Laboratory; Brown, Forrest B [Los Alamos National Laboratory; Wilson, Paul [UNIV. WISCONSIN

2009-01-01T23:59:59.000Z

139

Numerical simulations of gun-launched kinetic energy projectiles subjected to asymmetric projectile base pressure  

SciTech Connect

Three-dimensional numerical simulations were performed to determine the effect of an asymmetric base pressure on kinetic energy projectiles during launch. A matrix of simulations was performed in two separate launch environments. One launch environment represented a severe lateral load environment, while the other represented a nonsevere lateral load environment based on the gun tube straightness. The orientation of the asymmetric pressure field, its duration, the projectile`s initial position, and the tube straightness were altered to determine the effects of each parameter. The pressure asymmetry translates down the launch tube to exit parameters and is washed out by tube profile. Results from the matrix of simulations are presented.

Rabern, D.A.

1991-12-31T23:59:59.000Z

140

Numerical simulations of gun-launched kinetic energy projectiles subjected to asymmetric projectile base pressure  

SciTech Connect

Three-dimensional numerical simulations were performed to determine the effect of an asymmetric base pressure on kinetic energy projectiles during launch. A matrix of simulations was performed in two separate launch environments. One launch environment represented a severe lateral load environment, while the other represented a nonsevere lateral load environment based on the gun tube straightness. The orientation of the asymmetric pressure field, its duration, the projectile's initial position, and the tube straightness were altered to determine the effects of each parameter. The pressure asymmetry translates down the launch tube to exit parameters and is washed out by tube profile. Results from the matrix of simulations are presented.

Rabern, D.A.

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Preprint typeset using L ATEX style emulateapj ON THE KINETIC ENERGY AND RADIATIVE EFFICIENCY OF GAMMA-RAY BURSTS  

E-Print Network (OSTI)

Using measured X-ray luminosities to 17 Gamma-Ray Bursts (GRBs) during the afterglow phase and accounting for radiative losses, we calculate the kinetic energy of these bursts and investigate its relation to other GRB properties. We then use the observed radiated energy during the prompt phase to determine the radiative efficiency of these bursts, and explore how the efficiency relates to other GRB observables. We find that the kinetic energy in the afterglow phase is directly correlated with the radiated energy, total energy as well as possibly the jet opening angle and spectral peak energy. More importantly, we find the intriguing fact that the efficiency is correlated with the radiated energy, and mildly with the total energy, jet opening angle and spectral peak energy. XRF020903 also seems to follow the trends we find for our GRB sample. We discuss the implications of these results for the GRB radiation and jet models. 1.

Nicole M. Lloyd-ronning; Bing Zhang

2008-01-01T23:59:59.000Z

142

Plasma Kinetic Theory  

Science Conference Proceedings (OSTI)

Basic and Kinetic Theory / Proceedings of the Tenth Carolus Magnus Summer School on Plasma and Fusion Energy Physics

B. Weyssow

143

Motion graphs  

Science Conference Proceedings (OSTI)

In this paper we present a novel method for creating realistic, controllable motion. Given a corpus of motion capture data, we automatically construct a directed graph called a motion graph that encapsulates connections among the database. The ... Keywords: animation with constraints, motion capture, motion synthesis

Lucas Kovar; Michael Gleicher; Frédéric Pighin

2002-07-01T23:59:59.000Z

144

SEMIEMPIRICAL CORRELATION OF FISSION-YIELD AND KINETIC-ENERGY DISTRIBUTIONS  

SciTech Connect

A statistical approach to a theory of fission was introduced by Fong. In the final development of the fission theory, however, Fong made extensive use of the liquid-drop model, thus departing from the purely statistical approach. T. D. Newton revived and improved the statistical approach sufficiently to show that it might reproduce some but not all of the properties of the fission process. Improved atomic masses and nuclearlevel spacings are used in Newton's formulation of the statistical theory of fission. The integrals of the theory are evaluated with fewer approximations. Agreement is obtained with Newton's conclusion that the statistical approach is by itself inadequate, but it is found that it can form the basis of a semiempirical procedure for correlating fission yields and kinetic-energy distributions. (W.D.M.)

Cameron, A.G.W.

1959-10-31T23:59:59.000Z

145

Ion-Kinetic-Energy Measurements and Energy Balance in a Z-Pinch Plasma at Stagnation E. Kroupp, D. Osin, A. Starobinets, V. Fisher, V. Bernshtam, and Y. Maron  

E-Print Network (OSTI)

allowed for tracking the ion-kinetic-energy history throughout the entire K emission period of the energy balance requires information on the histories of the mass, electron temperature, and ionIon-Kinetic-Energy Measurements and Energy Balance in a Z-Pinch Plasma at Stagnation E. Kroupp, D

146

A Kinetic Energy Climatology of Flow Regimes Associated with 500 mb Waves over North America in Winter and Spring  

Science Conference Proceedings (OSTI)

A diagnostic analysis of kinetic energy budgets for midlatitude 500 mb synoptic-scale waves in the winter–spring season is presented. The data used were standard twice-daily rawinsonde observations in 50 mb increments from the surface to 100 mb ...

Yi-Tsuei Pai Sheu; Phillip J. Smith

1981-09-01T23:59:59.000Z

147

On the Effect of Ocean Waves on the Kinetic Energy Balance and Consequences for the Inertial Dissipation Technique  

Science Conference Proceedings (OSTI)

For large wind speed (in practice >15 m s?1) observations of the surface stress by means of the inertial dissipation technique are so close to the surface that effects of growing ocean waves on the turbulent kinetic energy budget should be taken ...

Peter A. E. M. Janssen

1999-03-01T23:59:59.000Z

148

ON THE KINETIC ENERGY AND RADIATIVE EFFICIENCY OF GAMMA-RAY BURSTS Nicole M. Lloyd-Ronning1  

E-Print Network (OSTI)

ON THE KINETIC ENERGY AND RADIATIVE EFFICIENCY OF GAMMA-RAY BURSTS Nicole M. Lloyd-Ronning1 of 17 gamma-ray bursts (GRBs) during the afterglow phase and ac- counting for radiative losses, we the implications of these results for the GRB radiation and jet models. Subject headinggs: gamma rays: bursts

Zhang, Bing

149

Neutron emission effects on fragment mass and kinetic energy distribution from fission of 239{sup Pu} induced by thermal neutrons  

SciTech Connect

The average of fragment kinetic energy (E-bar sign*) and the multiplicity of prompt neutrons ({nu}(bar sign)) as a function of fragment mass (m*), as well as the fragment mass yield (Y(m*)) from thermal neutron-induced fission of {sup 239}Pu have been measured by Tsuchiya et al.. In that work the mass and kinetic energy are calculated from the measured kinetic energy of one fragment and the difference of time of flight of the two complementary fragments. However they do not present their results about the standard deviation {sigma}{sub E}*(m*). In this work we have made a numerical simulation of that experiment which reproduces its results, assuming an initial distribution of the primary fragment kinetic energy (E(A)) with a constant value of the standard deviation as function of fragment mass ({sigma}{sub E}(A)). As a result of the simulation we obtain the dependence {sigma}{sub E}*(m*) which presents an enhancement between m* = 92 and m* = 110, and a peak at m* = 121.

Montoya, M. [Instituto Peruano de Energia Nuclear, Av. Canada 1470, Lima 41 (Peru); Facultad de Ciencias, Universidad Nacional de Ingenieria, Av. Tupac Amaru 210, Apartado 31-139, Lima (Peru); Rojas, J. [Instituto Peruano de Energia Nuclear, Av. Canada 1470, Lima 41 (Peru); Facultad de Ciencias Fisicas, Universidad Nacional Mayor de San Marcos, Av. Venezuela Cdra 34, Apartado Postal 14-0149, Lima 1 (Peru); Lobato, I. [Facultad de Ciencias, Universidad Nacional de Ingenieria, Av. Tupac Amaru 210, Apartado 31-139, Lima (Peru)

2010-08-04T23:59:59.000Z

150

The Numerical Solution of the Mellor-Yamada Level 2.5 Turbulent Kinetic Energy Equation in the Eta Model  

Science Conference Proceedings (OSTI)

A new method is presented for obtaining the numerical solution of the production-dissipation component of the turbulent kinetic energy equation that arises in the Mellor-Yamada level 2.5 turbulent closure model. The development of this new method ...

Joseph P. Gerrity Jr.; Thomas L. Black; Russell E. Treadon

1994-07-01T23:59:59.000Z

151

A Subsynoptic-Scale Kinetic Energy Analysis of the Red River Valley Tornado Outbreak (AVE-SESAME I)  

Science Conference Proceedings (OSTI)

The kinetic energy balance during the Red River Valley tornado outbreak (10–11 April 1979) is examined using mesa a-scale rawinsonde data from the first regional-scale day of AVE-SESAME 1979. Computational procedures account for non-simultaneous ...

Henry E. Fuelberg; Gary J. Jedlovec

1982-12-01T23:59:59.000Z

152

Challenge of creating accurate and effective kinetic-energy functionals Srinivasan S. Iyengar, Matthias Ernzerhof, Sergey N. Maximoff, and Gustavo E. Scuseria  

E-Print Network (OSTI)

kinetic energy functional, which provides re- sults accurate enough for chemical applications, is still on from being reliable for chemical applications DOI: 10.1103/PhysRevA.63.052508 PACS number s : 31.15.Ew on the ability of various approximate kinetic-energy func- tionals to describe chemical transformations

Iyengar, Srinivasan S.

153

Dynamical behavior of the entanglement, purity and energy between atomic qubits in motion under the influence of thermal environment  

E-Print Network (OSTI)

The entanglement, purity and energy of two isolated two-level atoms which are initially prepared in Bell state and each interacts with a thermal cavity field are investigated by considering the atomic motion and the field-mode structure. We achieve the analytical solutions of the atomic qubits by using the algebraic dynamical approach and the influences of the field-mode structure parameter, the strength of the thermal field and the detuning on the entanglement, purity and energy are discussed. We also investigate the state evolution of the atomic qubits based on the entanglement-purity-energy diagrams. Our results show that the disentanglement process of the atomic qubits accompanies by excitations transferring from atomic subsystem to cavity field modes and atomic state from a pure state convert to the mixed states.

L. Tan; Y. Q. Zhang; Z. H. Zhu; L. W. Liu

2010-05-20T23:59:59.000Z

154

High-performance solution of hierarchical equations of motions for studying energy-transfer in light-harvesting complexes  

E-Print Network (OSTI)

Excitonic models of light-harvesting complexes, where the vibrational degrees of freedom are treated as a bath, are commonly used to describe the motion of the electronic excitation through a molecule. Recent experiments point toward the possibility of memory effects in this process and require to consider time non-local propagation techniques. The hierarchical equations of motion (HEOM) were proposed by Ishizaki and Fleming to describe the site-dependent reorganization dynamics of protein environments (J. Chem. Phys., 130, p. 234111, 2009), which plays a significant role in photosynthetic electronic energy transfer. HEOM are often used as a reference for other approximate methods, but have been implemented only for small systems due to their adverse computational scaling with the system size. Here, we show that HEOM are also solvable for larger systems, since the underlying algorithm is ideally suited for the usage of graphics processing units (GPU). The tremendous reduction in computational time due to the GPU allows us to perform a systematic study of the energy-transfer efficiency in the Fenna-Matthews-Olson (FMO) light-harvesting complex at physiological temperature under full consideration of memory-effects. We find that approximative methods differ qualitatively and quantitatively from the HEOM results and discuss the importance of finite temperature to achieve high energy-transfer efficiencies.

Christoph Kreisbeck; Tobias Kramer; Mirta Rodriguez; Birgit Hein

2010-12-20T23:59:59.000Z

155

Enabling Energy-Efficient Approaches to Thermal Comfort Using Room Air Motion  

E-Print Network (OSTI)

uc/item/4488d1b8 Energy Efficiency, Thermal Comfort with Airuc/item/4488d1b8 Energy Efficiency, Thermal Comfort with Airuc/item/4488d1b8 Energy Efficiency, Thermal Comfort with Air

Pasut, Wilmer; Arens, Edward; Zhang, Hui; Kaam, Soazig; Zhai, Yongchao

2013-01-01T23:59:59.000Z

156

Position and energy-resolved particle detection using phonon-mediated microwave kinetic inductance detectors  

Science Conference Proceedings (OSTI)

We demonstrate position and energy-resolved phonon-mediated detection of particle interactions in a silicon substrate instrumented with an array of microwave kinetic inductance detectors (MKIDs). The relative magnitude and delay of the signal received in each sensor allow the location of the interaction to be determined with < or approx. 1mm resolution at 30 keV. Using this position information, variations in the detector response with position can be removed, and an energy resolution of {sigma}{sub E} = 0.55 keV at 30 keV was measured. Since MKIDs can be fabricated from a single deposited film and are naturally multiplexed in the frequency domain, this technology can be extended to provide highly pixelized athermal phonon sensors for {approx}1 kg scale detector elements. Such high-resolution, massive particle detectors would be applicable to rare-event searches such as the direct detection of dark matter, neutrinoless double-beta decay, or coherent neutrino-nucleus scattering.

Moore, D. C.; Golwala, S. R.; Cornell, B. [Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, California 91125 (United States); Bumble, B.; Day, P. K.; LeDuc, H. G. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States); Zmuidzinas, J. [Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, California 91125 (United States); Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States)

2012-06-04T23:59:59.000Z

157

Evidence from the Special Relativity and Blackbody Radiation Theories for the Existence of Photons Possessing Zero Kinetic Energy  

E-Print Network (OSTI)

The traditional interpretation of radiative emission and absorption asserts that photons are created and annihilated in such processes. A Gedanken experiment is considered in which kinetic energy from observed photons is systematically removed until a limit of zero is reached. With the help of the relativistic Doppler effect it is shown that even for infinitesimally small kinetic energies the photons continue to exist, since in other inertial systems they will be observed to have a much higher energy/frequency falling in an easily detectable range. It is possible to formulate an alternative explanation for absorption and emission processes on this basis in terms of real photons with exactly zero kinetic energy being present before or after radiative interactions. Bolstering this hypothesis is the fact that the statistical mechanical treatment of photons interacting with oscillators in blackbody radiation theory predicts an infinite density of photons of this energy, both in the original Planck formulation employing Maxwell-Boltzmann statistics and in the subsequent Bose-Einstein description. These considerations demonstrate that the E = 0 state is greatly preferred as the product of absorption because of the requirement to have the interaction occur in a relatively narrow region of space- time. There is thus strong evidence that photons are not created and annihilated in radiative processes but simply have their kinetic energy changed either to or from a zero value. Accordingly a very high density of zero-energy photons is expected to exist uniformly throughout the universe. Finally, this development suggests that one should subject the creation-annihilation hypothesis to careful scrutiny in other areas of physics as well.

Robert J. Buenker

2005-01-11T23:59:59.000Z

158

Kinetic energy deficit in the symmetric fission of /sup 259/Md. [Light particle emission in /sup 256/Fm fission  

Science Conference Proceedings (OSTI)

The fragment energies of about 725 coincidence events have now been observed in the spontaneous fission (SF) decay of 105-min /sup 259/Md since its discovery in 1977. The fission of /sup 259/Md is characterized by a symmetric mass distribution, similar to those of /sup 258/Fm and /sup 259/Fm, but with a broad total kinetic energy (anti TKE) distribution which peaks at about 195 MeV, in contrast to those of /sup 258/Fm and /sup 259/Fm, for which the anti TKE is about 240 MeV. This kinetic energy deficit, approx. 40 MeV, has been postulated to be due to the emission of hydrogen-like particles by /sup 259/Md at the scission point in a large fraction of the fissions, leaving the residual fissioning nucleus with 100 protons. The residual nucleus would then be able to divide into two ultrastable tin-like fission fragments, but with less kinetic energy than that observed in the SF of /sup 258/Fm and /sup 259/Fm, because of binding-energy losses and a reduction in the Coulomb repulsion of the major fragments. To test this hypothesis, counter-telescope experiments aimed at detecting and identifying these light particles were performed. In 439 SF events 3 + 3 protons of the appropriate energy were observed, too few to account for the kinetic energy deficit in the fission of /sup 259/Md. There seems to be no explanation for this problem within the framework of current fission theory. These results are discussed along with preliminary measurements of light-particle emission in the SF of /sup 256/Fm. 5 figures.

Hulet, E.K.; Wild, J.F.; Lougheed, R.W.; Baisden, P.A.; Dougan, R.J.; Mustafa, M.G.

1980-10-01T23:59:59.000Z

159

Hydrostatic Level Sensors as High Precision Ground Motion Instrumentation for Tevatron and Other Energy Frontier Accelerators  

Science Conference Proceedings (OSTI)

Particle accelerators require very tight tolerances on the alignment and stability of their elements: magnets, accelerating cavities, vacuum chambers, etc. In this article we describe the Hydrostatic Level Sensors (HLS) for very low frequency measurements used in a variety of facilities at Fermilab. We present design features of the sensors, outline their technical parameters, describe their test and calibration procedures, discuss different regimes of operation and give few illustrative examples of the experimental data. Detail experimental results of the ground motion measurements with these detectors will be presented in subsequent papers.

Volk, James; Hansen, Sten; Johnson, Todd; Jostlein, Hans; Kiper, Terry; Shiltsev, Vladimir; Chupyra, Andrei; Kondaurov, Mikhail; Medvedko, Anatoly; Parkhomchuk, Vasily; Singatulin, Shavkat

2012-01-01T23:59:59.000Z

160

Application of a kinetic energy partitioning scheme for ab initio molecular dynamics to reactions associated with ionization in water tetramers  

SciTech Connect

We give the details of a new partitioning scheme of the kinetic energy in molecular dynamics. The scheme utilizes instantaneous internal coordinates and atomic velocities, and at the lowest level separates the kinetic energy into solute and solvent (or bath) contributions. We illustrate its application in an analysis of the short-time dynamics of ‘cyclic’ and ‘branched’ water tetramers after an ionization event. The analysis supports the partitioning of the tetrameric systems into two subsystems, a ‘reactive trimer’ and a ‘solvent’ molecule. The partitioned kinetic energy exhibits two features, a broad peak assigned to the interaction between the two sub-systems and a sharper peak arising from the proton transfer that occurs upon ionization. It is found that the stability of the hydroxyl radical formed upon ionization is sensitive to the instantaneous configuration of the water molecules around the ionized water. Michel Dupuis was supported in part by the Division of Chemical Sciences, Office of Basic Energy Sciences, of the U.S. Department of Energy (DOE). This research was performed in part using the Molecular Science Computing Facility in the he William R. Wiley Environmental Molecular Sciences Laboratory (EMSL) at the PNNL. The EMSL is funded by DOE’s Office of Biological and Environmental Research. PNNL is operated by Battelle for DOE.

Furuhama, Ayako; Dupuis, Michel; Hirao, Kimihiko

2008-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Dynamical interpretation of average fission-fragment kinetic energy systematics and nuclear scission  

Science Conference Proceedings (OSTI)

A dynamical interpretation of the well-known systematics for average total kinetic energy of fission fragments over a wide range of the Coulomb parameter (600fission theory--at zero neck radius and at finite neck radius--have been applied in dynamical calculations. Both have resulted in a fairly good description of the dependence of on the Coulomb parameter. The results of dynamical calculations of within three-dimensional Langevin dynamics show that the mean distance between the centers of mass of nascent fragments at the scission configuration increases linearly with the parameter Z{sup 2}/A{sup 1/3}. This distance changes approximately from 2.35R{sub 0} for {sup 119}Xe to 2.6R{sub 0} for {sup 256}Fm. In spite of this increase in mean distance between future fragments at scission, the linear dependence of on the parameter Z{sup 2}/A{sup 1/3} remains approximately valid over a wide range of the Coulomb parameter Z{sup 2}/A{sup 1/3}.

Nadtochy, P.N. [GSI, Plankstrasse 1, D-64291 Darmstadt (Germany); Omsk State University, Department of Theoretical Physics, Mira Prospect 55-A, RU-644077 Omsk (Russian Federation); Adeev, G.D. [Omsk State University, Department of Theoretical Physics, Mira Prospect 55-A, RU-644077 Omsk (Russian Federation)

2005-11-01T23:59:59.000Z

162

Structure and Kinetics  

Science Conference Proceedings (OSTI)

Mar 4, 2013 ... Materials Science in Reduced Gravity: Structure and Kinetics ... Bias fields comprise weak interface energy sources that result from the vector ...

163

Laser sustained discharge nozzle apparatus for the production of an intense beam of high kinetic energy atomic species  

DOE Patents (OSTI)

Laser sustained discharge apparatus for the production of intense beams of high kinetic energy atomic species. A portion of the plasma resulting from a laser sustained continuous optical discharge which generates energetic atomic species from a gaseous source thereof is expanded through a nozzle into a region of low pressure. The expanded plasma contains a significant concentration of the high kinetic energy atomic species which may be used to investigate the interaction of surfaces therewith. In particular, O-atoms having velocities in excess of 3.5 km/s can be generated for the purpose of studying their interaction with materials in order to develop protective materials for spacecraft which are exposed to such energetic O-atoms during operation in low earth orbit.

Cross, Jon B. (Santa Fe, NM); Cremers, David A. (Los Alamos, NM)

1988-01-01T23:59:59.000Z

164

Laser sustained discharge nozzle apparatus for the production of an intense beam of high kinetic energy atomic species  

DOE Patents (OSTI)

Laser sustained discharge apparatus for the production of intense beams of high kinetic energy atomic species is described. A portion of the plasma resulting from a laser sustained continuous optical discharge which generates energetic atomic species from a gaseous source thereof is expanded through a nozzle into a region of low pressure. The expanded plasma contains a significant concentration of the high kinetic energy atomic species which may be used to investigate the interaction of surfaces therewith. In particular, O-atoms having velocities in excess of 3.5 km/s can be generated for the purpose of studying their interaction with materials in order to develop protective materials for spacecraft which are exposed to such energetic O-atoms during operation in low earth orbit.

Cross, J.B.; Cremers, D.A.

1986-01-10T23:59:59.000Z

165

Brownian shape motion on five-dimensional potential-energy surfaces: Nuclear fission-fragment mass distributions  

E-Print Network (OSTI)

Although nuclear fission can be understood qualitatively as an evolution of the nuclear shape, a quantitative description has proven to be very elusive. In particular, until now, there exists no model with demonstrated predictive power for the fission fragment mass yields. Exploiting the expected strongly damped character of nuclear dynamics, we treat the nuclear shape evolution in analogy with Brownian motion and perform random walks on five-dimensional fission potential-energy surfaces which were calculated previously and are the most comprehensive available. Test applications give good reproduction of highly variable experimental mass yields. This novel general approach requires only a single new global parameter, namely the critical neck size at which the mass split is frozen in, and the results are remarkably insensitive to its specific value.

Jorgen Randrup; Peter Moller

2011-03-02T23:59:59.000Z

166

Kinetic Theory of Plasma Waves  

Science Conference Proceedings (OSTI)

Kinetic Wave Theory / Proceedings of the Tenth Carolus Magnus Summer School on Plasma and Fusion Energy Physics

D. Van Eester; E. Lerche

167

The Mesoscale Forcing of a Midlatitude Upper-Tropospheric Jet Streak by a Simulated Convective System. Part II: Kinetic Energy and Resolution Analysis  

Science Conference Proceedings (OSTI)

A kinetic energy (KE) analysis of the forcing of a mesoscale upper-tropospheric jet streak by organized diabaaic processes within the simulated convective system (SCS) that was discussed in Part I is presented in this study. The relative ...

Bart J. Wolf; Donald R. Johnson

1995-04-01T23:59:59.000Z

168

The Atmospheric Boundary Layer during Swell: A Field Study and Interpretation of the Turbulent Kinetic Energy Budget for High Wave Ages  

Science Conference Proceedings (OSTI)

Analysis of the turbulent kinetic energy (TKE) budget for five slightly unstable cases with swell has been performed based on measurements of mechanical production, buoyancy production, turbulent transport, and dissipation at five levels over the ...

U. Högström; A. Smedman; E. Sahleé; W. M. Drennan; K. K. Kahma; H. Pettersson; F. Zhang

2009-09-01T23:59:59.000Z

169

Velocity and Eddy Kinetic Energy of the Gulf Stream System from 700-m SOFAR Floats Subsampled to Simulate Pop-up Floats  

Science Conference Proceedings (OSTI)

Velocity and eddy kinetic energy were calculated from SOFAR (sound fixing and ranging) float trajectories using original daily values and values subsampled at intervals of 15, 30, and 60 days to simulate pop-up floats that surface for position ...

P. L. Richardson

1992-08-01T23:59:59.000Z

170

A Spectral Stochastic Kinetic Energy Backscatter Scheme and Its Impact on Flow-Dependent Predictability in the ECMWF Ensemble Prediction System  

Science Conference Proceedings (OSTI)

Understanding model error in state-of-the-art numerical weather prediction models and representing its impact on flow-dependent predictability remains a complex and mostly unsolved problem. Here, a spectral stochastic kinetic energy backscatter ...

J. Berner; G. J. Shutts; M. Leutbecher; T. N. Palmer

2009-03-01T23:59:59.000Z

171

The Influence of Atmospheric Stability on the Budgets of the Reynolds Stress and Turbulent Kinetic Energy within and above a Deciduous Forest  

Science Conference Proceedings (OSTI)

This paper shows that the inclusion of thermal effects is necessary to correctly interpret the physical processes involved in the generation or suppression of Reynolds stress and turbulent kinetic energy inside a form canopy. In both of thew ...

M. Y. Leclerc; R. H. Shaw; G. Den Hartog; H. H. Neumann

1990-09-01T23:59:59.000Z

172

Application of a kinetic energy partitioning scheme for ab initio molecular dynamics to reactions associated with ionization in water tetramers  

SciTech Connect

We give the details of a partitioning scheme of the kinetic energy in molecular dynamics based on instantaneous internal coordinates and atomic velocities. The scheme applied to the analysis of the short-time dynamics after ionization in ‘cyclic’ and ‘branched’ water tetramers illustrates that the tetrameric systems can be usefully partitioned into two subsystems, a ‘reactive trimer’ and a ‘solvent’ molecule. The partitioned kinetic energy exhibits a broad peak that can be assigned to the interaction between the two sub-systems, and a sharper peak arising from the proton transfer that occurs upon ionization. Comparison of the dynamics in tetramer clusters suggests that the stability of the hydroxyl radical formed upon ionization depends on the instantaneous configuration of the water molecules around the ionized water. These findings are consistent with those reported earlier for the (H2O)17 cluster. This work was supported in part by the Division of Chemical Sciences, Office of Basic Energy Sciences, of the U.S. Department of Energy (DOE). This research was performed in part using the Molecular Science Computing Facility in the William R. Wiley Environmental Molecular Sciences Laboratory (EMSL) at the Pacific Northwest National Laboratory (PNNL). The EMSL is funded by DOE’s Office of Biological and Environmental Research. PNNL is operated by Battelle for DOE.

Furuhama, Ayako; Dupuis, Michel; Hirao, Kimihiko

2008-05-29T23:59:59.000Z

173

Thermodynamics and Kinetics Information at NIST  

Science Conference Proceedings (OSTI)

... Staff (06/28/2013). Thermodynamic & Kinetic Data for Sustainable Energy (10/05/2012). Thermodynamics and Kinetics Group (07/06/2013 ...

2010-05-24T23:59:59.000Z

174

The Balance of Kinetic and Total Energy Simulated by the OSU Two-Level Atmospheric General Circulation Model for January and July  

Science Conference Proceedings (OSTI)

The horizontal structure of the balances of kinetic energy and total energy simulated by the Oregon State University (OSU) two-level atmospheric general circulation model are studied for January and July on the basis of a three-year simulation ...

Jough-Tai Wang; Jeong-Woo Kim; W. Lawrence Gates

1984-05-01T23:59:59.000Z

175

spatial experience motion body  

Science Conference Proceedings (OSTI)

elements were examined in terms of architectural space and in respect to the tension .... The tension or energy fields of the inserted objects enter into a relationship and ...... The search for form based on the flows of motion and other external ...

176

Effects of Neutron Emission on Fragment Mass and Kinetic Energy Distribution from Thermal Neutron-Induced Fission of {sup 235}U  

SciTech Connect

The mass and kinetic energy distribution of nuclear fragments from thermal neutron-induced fission of {sup 235}U(n{sub th},f) have been studied using a Monte-Carlo simulation. Besides reproducing the pronounced broadening in the standard deviation of the kinetic energy at the final fragment mass number around m = 109, our simulation also produces a second broadening around m = 125. These results are in good agreement with the experimental data obtained by Belhafaf et al. and other results on yield of mass. We conclude that the obtained results are a consequence of the characteristics of the neutron emission, the sharp variation in the primary fragment kinetic energy and mass yield curves. We show that because neutron emission is hazardous to make any conclusion on primary quantities distribution of fragments from experimental results on final quantities distributions.

Montoya, M. [Instituto Peruano de Energia Nuclear, Av. Canada 1470, Lima 41 (Peru); Facultad de Ciencias, Universidad Nacional de Ingenieria, Av. Tupac Amaru 210, Apartado 31-139, Lima (Peru); Rojas, J. [Instituto Peruano de Energia Nuclear, Av. Canada 1470, Lima 41 (Peru); Facultad de Ciencias Fisicas, Universidad Nacional Mayor de San Marcos, Av. Venezuela Cdra 34, Apartado Postal 14-0149, Lima 1 (Peru); Saetone, E. [Facultad de Ciencias, Universidad Nacional de Ingenieria, Av. Tupac Amaru 210, Apartado 31-139, Lima (Peru)

2007-10-26T23:59:59.000Z

177

Energy transfer kinetics in oxy-fluoride glass and glass-ceramics doped with rare-earth ions  

SciTech Connect

An investigation of donor-acceptor energy transfer kinetics in dual rare earths doped precursor oxy-fluoride glass and its glass-ceramics containing NaYF{sub 4} nano-crystals is reported here, using three different donor-acceptor ion combinations such as Nd-Yb, Yb-Dy, and Nd-Dy. The precipitation of NaYF{sub 4} nano-crystals in host glass matrix under controlled post heat treatment of precursor oxy-fluoride glasses has been confirmed from XRD, FESEM, and transmission electron microscope (TEM) analysis. Further, the incorporation of dopant ions inside fluoride nano-crystals has been established through optical absorption and TEM-EDX analysis. The noticed decreasing trend in donor to acceptor energy transfer efficiency from precursor glass to glass-ceramics in all three combinations have been explained based on the structural rearrangements that occurred during the heat treatment process. The reduced coupling phonon energy for the dopant ions due to fluoride environment and its influence on the overall phonon assisted contribution in energy transfer process has been illustrated. Additionally, realization of a correlated distribution of dopant ions causing clustering inside nano-crystals has also been reported.

Sontakke, Atul D.; Annapurna, K. [Glass Science and Technology Section, CSIR-Central Glass and Ceramic Research Institute, 196, Raja S. C. Mullick Road, Kolkata - 700 032 (India)

2012-07-01T23:59:59.000Z

178

Zero Energy Travel  

E-Print Network (OSTI)

It is fundamentally possible to travel with zero energy based on Newton Laws of Motion. According to the first law of motion, a body will continue to travel for infinite distance unless it is acted upon by another force. For a body in motion, the force which stops perpetual motion is friction. However, there are many circumstances that friction is zero, for example in space, where there is vacuum. On earth, gravity makes objects to be in constant contact with each other generating friction but technology exists to separate them in the air using powerful magnetic forces. At low speeds, the friction caused by air is minimal but we can create vacuum even on land for high speed travel. Another condition for travelling is for it to stop at its destination. On land, we can recover the kinetic energy back into electrical energy using brushless permanent magnet generators. These generators can also convert electric energy into kinetic energy in order to provide motion. This article reviews technologies that will allow us to travel with zero energy. It is easier to do it on land but in the air, it is not obvious.

Othman Ahmad; Aroland Kiring; Ali Chekima

2011-09-17T23:59:59.000Z

179

Diffusivity, Kinetic Energy Dissipation, and Closure Theories for the Poleward Eddy Heat Flux  

Science Conference Proceedings (OSTI)

Diffusive eddy closure theory for estimating the poleward heat flux is reexamined and tested in the context of a two-layer homogeneous model. Consideration of the inverse energy cascade induced by baroclinic turbulence on the ? plane leads to an ...

G. Lapeyre; I. M. Held

2003-12-01T23:59:59.000Z

180

Measurement of the Rates of Production and Dissipation of Turbulent Kinetic Energy in an Energetic Tidal Flow: Red Wharf Bay Revisited  

Science Conference Proceedings (OSTI)

Simultaneous measurements of the rates of turbulent kinetic energy (TKE) dissipation (?) and production (P) have been made over a period of 24 h at a tidally energetic site in the northern Irish Sea in water of 25-m depth. Some ? profiles from 5 ...

Tom P. Rippeth; John H. Simpson; Eirwen Williams; Mark E. Inall

2003-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Molecular Recognition in Cyclodextrin Complexes of Amino Acid Derivatives: The Effects of Kinetic Energy on the Molecular Recognition of a Pseudopeptide in a Nonconstraining  

E-Print Network (OSTI)

Molecular Recognition in Cyclodextrin Complexes of Amino Acid Derivatives: The Effects of Kinetic Energy on the Molecular Recognition of a Pseudopeptide in a Nonconstraining Host Environment as Revealed-acetyl-L-phenylalanine methyl ester has been determined at several temperatures between 298 and 20 K to further study molecular

Vold, Robert

182

Economic and kinetic studies of the production of chemicals and farm energy by fermentation of biomass  

DOE Green Energy (OSTI)

The farm energy system has been constructed in Drury, Missouri. The purpose of this unit is to demonstrate the feasibility of producing energy for farms (heat and electricity) from methane produced by anaerobic digestion of crop residues and other crop materials. The acid hydrolysis pre-treatment of corn stover studies utilize a two stage sulfuric acid contact. In the first stage, dilute sulfuric acid is used to hydrolyze the pentosan fraction of ground biomass. The second stage uses concentrated sulfuric acid for hexosan hydrolysis. The use of the two steps give high yields, possible with concentrated acid, without the problems of pentose decomposition.

Gaddy, J.L.

1979-01-01T23:59:59.000Z

183

What kind of energy is the mass?  

E-Print Network (OSTI)

In 1905, Einstein discovered the famous equation: E=mc^2, which means that the rest mass of a particle is some kind of energy. This energy is generally referred to as "rest energy", since the particle is believed to be at rest. This paper proposes a new interpretation to the term mc^2. Observing the similarity between the term mc^2 and the kinetic energy term mv^2/2, we propose to interpret mc^2 as being one term of kinetic energy. In other words we propose that, in the called "rest frame", the massive particles are not really at rest, but they are doing a special kind of motion at the light speed c. In this interpretation the "mass" is not an intrinsic property of the particle. The "mass" is simply the kinetic energy associated with this special kind of motion. The more important consequence of this hypothesis is that the term mc^2, present in the relativistic Hamiltonian, must be rewritten as: mc^2 => p_0 c, where p_0 = mc is the modulus of the instantaneous linear moment \\vec{p}_0 associated with the special motion. We analyse a physical scenario in which this special motion is a Microscopic Orbital Circular Motion (MOCM). The characteristic length scale of the MOCM is of the order of the Compton wavelength of the particle.

E. R. Cazaroto

2013-02-07T23:59:59.000Z

184

Kinetic Theory of Plasma Waves - Part III: Inhomogeneous Plasma  

Science Conference Proceedings (OSTI)

Kinetic Theory / Proceedings of the Ninth Carolus Magnus Summer School on Plasma and Fusion Energy Physics

P. U. Lamalle

185

Kinetic Theory of Plasma Waves - Part I: Introduction  

Science Conference Proceedings (OSTI)

Kinetic Theory / Proceedings of the Ninth Carolus Magnus Summer School on Plasma and Fusion Energy Physics

P. U. Lamalle

186

Kinetic energy of hydrogen in. beta. -V sub 2 H studied by neutron Compton scattering  

DOE Green Energy (OSTI)

Hydrogen dissolves in nearly all metals in large quantities, occupying interstitial sites which are energetic minima of the hydrogen potential. Experimentally, this potential can be determined by neutron vibrational spectroscopy (NVS) and, recently, by neutron Compton scattering (NCS) i.e. either by a measurement of the excitation energies of the localized hydrogen vibrations or by a measurement of the hydrogen momentum distribution. In this brief communication we report on what we believe is the first NCS experiment on a metal hydride. For the system to be investigated we chose {beta}-V{sub 2}H, an ordered hydride phase with hydrogen on pseudotetragonal octahedral sites. 3 figs., 7 refs.

Hempelmann, R.; Richter, D. (Forschungszentrum Juelich GmbH (Germany, F.R.). Inst. fuer Festkoerperforschung); Price, D.L. (Argonne National Lab., IL (USA))

1990-08-01T23:59:59.000Z

187

Questions and Answers - Do rotating magnets create energy? Where can I find  

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

If energy is formed by a generator,how does it form the energy? If energy is formed by a generator,<br>how does it form the energy? Previous Question (If energy is formed by a generator, how does it form the energy?) Questions and Answers Main Index Next Question (What is the fastest type of energy?) What is the fastest type of energy? Do rotating magnets create energy? Where can I find more information on this subject? The first law of thermodynamics is that matter/energy cannot be "created" or destroyed. We can convert energy from one form to another. For instance, in a car, we convert chemical energy (actually the binding energy of electrons) to heat, which in turn is converted to kinetic energy (motion). Your question has a similar answer. When you rotate a magnet, you are using kinetic energy to move it. This kinetic energy can be converted to

188

Definition: Thermal energy | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Thermal energy Jump to: navigation, search Dictionary.png Thermal energy The kinetic energy associated with the random motions of the molecules of a material or object; often used interchangeably with the terms heat and heat energy. Measured in joules, calories, or Btu.[1][2][3] View on Wikipedia Wikipedia Definition Thermal energy is the part of the total potential energy and kinetic energy of an object or sample of matter that results in the system temperature. It is represented by the variable Q, and can be measured in Joules. This quantity may be difficult to determine or even meaningless unless the system has attained its temperature only through warming (heating), and not been subjected to work input or output, or any other

189

Ground motion input in seismic evaluation studies  

Science Conference Proceedings (OSTI)

This report documents research pertaining to conservatism and variability in seismic risk estimates. Specifically, it examines whether or not artificial motions produce unrealistic evaluation demands, i.e., demands significantly inconsistent with those expected from real earthquake motions. To study these issues, two types of artificial motions are considered: (a) motions with smooth response spectra, and (b) motions with realistic variations in spectral amplitude across vibration frequency. For both types of artificial motion, time histories are generated to match target spectral shapes. For comparison, empirical motions representative of those that might result from strong earthquakes in the Eastern U.S. are also considered. The study findings suggest that artificial motions resulting from typical simulation approaches (aimed at matching a given target spectrum) are generally adequate and appropriate in representing the peak-response demands that may be induced in linear structures and equipment responding to real earthquake motions. Also, given similar input Fourier energies at high-frequencies, levels of input Fourier energy at low frequencies observed for artificial motions are substantially similar to those levels noted in real earthquake motions. In addition, the study reveals specific problems resulting from the application of Western U.S. type motions for seismic evaluation of Eastern U.S. nuclear power plants.

Sewell, R.T.; Wu, S.C.

1996-07-01T23:59:59.000Z

190

Microsoft Word - Motion to Intervene  

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

ELECTRICITY DELIVERY AND ENERGY RELIABILITY ELECTRICITY DELIVERY AND ENERGY RELIABILITY Northern Pass Transmission LLC OE Docket No. PP-371 Application for Presidential Permit MOTION TO INTERVENE Pursuant to Rule 214 of the Rules of Practice and Procedure of the Federal Energy Regulatory Commission (18CFR 385.214) we (Stephen Buzzell and Lelah Sullivan) do hereby file this motion to intervene. In support of this motion, we state as follows: 1. Notices, correspondence and other communications All notices, correspondence, communications and other information concerning this proceeding should be directed to: Stephen Buzzell and Lelah Sullivan, 36 Buzzell Lane, Eliot, ME 03903. Telephone: 207-641-7036, email: 1s2buzzell3@comcast.net. 2. Movant's interest We own a vacation home [43 Gingerbread Rd. ,Easton, NH] that is directly on the right away of the

191

Pit disassembly motion control  

Science Conference Proceedings (OSTI)

A Department of Energy (DOE) Pit Disassembly and Conversion Facility (PDCF) is being designed for the Savannah River Site in South Carolina. The facility will recover plutonium from excess nuclear weapon pits defined in START II and START III treaties. The plutonium will be stored and used to produce mixed oxide reactor fuel at another new DOE facility. Because of radiation dose issues, much of the pit disassembly work and material transfer will be automated. Automated material handling systems will interface with disassembly lathes, conversion reactors that produce oxide for storage, robotic container welding stations, vault retrieval systems, and nondestructive assay (NDA) instrumentation. The goal is to use common motion control hardware for material transfer and possibly common motion controllers for the unique PDCF systems. The latter is complicated by the different directions manufactures are considering for distributed control, such as Firewire, SERCOS, etc., and by the unique control requirements of machines such as lathes compared to controls for an integrated NDA system. The current design approach is to standardize where possible, use network cables to replace wire bundles where possible, but to first select hardware and motion controllers that meet specific machine or process requirements.

Christensen, L. (Lowell); Pittman, P. C. (Pete C.)

2001-01-01T23:59:59.000Z

192

MHK Technologies/The Crestwing Wave Energy Converter | Open Energy  

Open Energy Info (EERE)

Crestwing Wave Energy Converter Crestwing Wave Energy Converter < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage The Crestwing Wave Energy Converter.jpg Technology Profile Primary Organization Waveenergyfyn Technology Resource Click here Wave Technology Type Click here Attenuator Technology Readiness Level Click here TRL 7 8 Open Water System Testing Demonstration and Operation Technology Description The connected pontoons swing around the hinge when the top of the waves passes under the floats The pontoons relative motion is converted into usable energy through a linear PTO system The pontoons are pushed upwards from the below passing wave and again dragged down by the same passing wave Complex hydrodynamic conditions occur under the pontoons when the wave formation pushes the unit up and down simultaneously The energy from waves can be divided into fifty percent potential energy and fifty percent kinetic energy Crestwing absorbs both the potential energy as the kinetic energy which is the back ground for the high efficiency

193

LWZ-0021 Motion to Dismiss  

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

Sandia National Laboratories Sandia National Laboratories DECISION AND ORDER OF THE DEPARTMENT OF ENERGY Motions to Dismiss Names of Petitioners: Sandia National Laboratories L & M Technologies, Inc. Dates of Filing: August 11, 1993 August 17, 1993 Case Numbers: LWZ-0021 LWZ-0022 This determination will consider two Motions to Dismiss filed by Sandia National Laboratories (Sandia) and L & M Technologies, Inc. (L&M) on August 11 and 17, 1993, respectively. In their Motions, Sandia and L&M seek the dismissal of the underlying complaint and hearing request filed by Mr. Ronald A. Sorri (Sorri) under the Department of Energy's Contractor Employee Protection Program. Sorri's present request for a hearing under § 708.9 was filed on June 9, 1993, and it has been assigned Office

194

Experimental Estimation Of Energy Damping During Free Rocking Of Unreinforced Masonry Walls. First Results  

Science Conference Proceedings (OSTI)

This paper presents an ongoing experimental program on unreinforced masonry walls undergoing free rocking. Aim of the laboratory campaign is the estimation of kinetic energy damping exhibited by walls released with non?zero initial conditions of motion. Such energy damping is necessary for dynamic modelling of unreinforced masonry local mechanisms. After a brief review of the literature on this topic

Luigi Sorrentino; Renato Masiani; Stefano Benedetti

2008-01-01T23:59:59.000Z

195

Erbium hydride decomposition kinetics.  

DOE Green Energy (OSTI)

Thermal desorption spectroscopy (TDS) is used to study the decomposition kinetics of erbium hydride thin films. The TDS results presented in this report are analyzed quantitatively using Redhead's method to yield kinetic parameters (E{sub A} {approx} 54.2 kcal/mol), which are then utilized to predict hydrogen outgassing in vacuum for a variety of thermal treatments. Interestingly, it was found that the activation energy for desorption can vary by more than 7 kcal/mol (0.30 eV) for seemingly similar samples. In addition, small amounts of less-stable hydrogen were observed for all erbium dihydride films. A detailed explanation of several approaches for analyzing thermal desorption spectra to obtain kinetic information is included as an appendix.

Ferrizz, Robert Matthew

2006-11-01T23:59:59.000Z

196

Topobo : a 3-D constructive assembly system with kinetic memory  

E-Print Network (OSTI)

We introduce Topobo, a 3-D constructive assembly system em- bedded with kinetic memory, the ability to record and playback physical motion. Unique among modeling systems is Topobo's coincident physical input and output ...

Raffle, Hayes Solos, 1974-

2004-01-01T23:59:59.000Z

197

Kinetic Economies  

E-Print Network (OSTI)

We study a minimalist kinetic model for economies. A system of agents with local trading rules display emergent demand behaviour. We examine the resulting wealth distribution to look for non-thermal behaviour. We compare and contrast this model with other similar models.

Abdullah, Wan Ahmad Tajuddin Wan

2007-01-01T23:59:59.000Z

198

Investigating Grain Boundary Structure-Kinetic Property ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Grain boundary energy landscapes contain all the information that is required to describe the kinetic behavior of grain boundaries (GBs).

199

Condensed-phase kinetic deuterium isotope effects in high-energy phenomena: Mechanistic investigations and relationships. Technical report, January 1975-December 1989  

SciTech Connect

The rate-controlling mechanistic step of an energetic material's condensed phase thermochemical decomposition process is determined directly using the kinetic deuterium isotope effect (KDIE) approach. The KDIE is used with isothermal DSC and isothermal TGA analyses of TNT, HNBB, TATB, RDX, HMX, and their deuterium labeled analogs. The decomposition processes' rate-controlling step possibly can change as the energetic material physical state varies. The condensed phase KDIE approach that determines the rate-controlling mechanistic step in a slow thermochemical decomposition process, can be extended into the progressively more drastic high energy regimes encountered with the rapid pyrolytic decomposition/deflagration process, plus the higher temperature/pressure combustion, thermal explosion, and detonation events. The KDIE determined mechanistic relationships between the slow thermochemical decomposition process and more hostile high energy events are individually described for HMX, RDX, TATB, and TNT.

Shackelford, S.A.

1989-12-01T23:59:59.000Z

200

LWD-0008 Motion for Discovery  

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

Ronald A. Sorri Ronald A. Sorri DECISION AND ORDER OF THE DEPARTMENT OF ENERGY Motions for Discovery Supplemental Order Name of Petitioner: Ronald A. Sorri L&M Technologies, Inc. Ronald A. Sorri Dates of Filing: September 24, 1993 September 27, 1993 October 12, 1993 Case Numbers: LWD-0008 LWD-0009 LWX-0011 This determination will consider two requests for discovery filed with the Office of Hearings and Appeals (OHA) on September 24 and 27, 1993, by Ronald A. Sorri (Sorri) and L&M Technologies, Inc. (L&M), respectively. These motions concern the hearing requested by Sorri under the Department of Energy's Contractor Employee Protection Program, 10 C.F.R. Part 708, on June 9, 1993 (OHA Case No. LWA-0001). The DOE Contractor Employee Protection Program and the Sorri proceeding are described in a

Note: This page contains sample records for the topic "motion kinetic energy" 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

Exact results for parallel-chain kinetic models of biological transport Anatoly B. Kolomeisky  

E-Print Network (OSTI)

-state models. Thus, the application of phenomenological simple chemical kinetic models20­22,25 which provide ``chemical'' approach is based on a kinetic multistate description of the molecular motor transport.17 or conformations leads to the motion of motor proteins. In the simplest chemical kinetic model see Fig. 1 , a motor

202

Motion in Quantum Gravity  

E-Print Network (OSTI)

We tackle the question of motion in Quantum Gravity: what does motion mean at the Planck scale? Although we are still far from a complete answer we consider here a toy model in which the problem can be formulated and resolved precisely. The setting of the toy model is three dimensional Euclidean gravity. Before studying the model in detail, we argue that Loop Quantum Gravity may provide a very useful approach when discussing the question of motion in Quantum Gravity.

Karim Noui

2010-03-31T23:59:59.000Z

203

Ab initio study of low-energy electron collisions with tertafluoroethene, C2F4  

E-Print Network (OSTI)

the overall kinetic energy matrix, while not diagonal, canthe kinetic energy operator has a blocked matrix structure,Matrix elements of derivative operators, such as the kinetic energy,

Trevisan, C.S.; Orel, A.E.; Rescigno, T.N.

2004-01-01T23:59:59.000Z

204

Kinetic advantage of controlled intermediate nuclear fusion  

SciTech Connect

The dominated process of controlled fusion is to let nuclei gain enough kinetic energy to overcome Coulomb barrier. As a result, a fusion scheme can consider two factors in its design: to increase kinetic energy of nuclei and to alter the Coulomb barrier. Cold Fusion and Hot fusion are all one-factor schemes while Intermediate Fusion is a twofactors scheme. This made CINF kinetically superior. Cold Fusion reduces deuteron-deuteron distance, addressing Coulomb barrier, and Hot Fusion heat up plasma into extreme high temperature, addressing kinetic energy. Without enough kinetic energy made Cold Fusion skeptical. Extreme high temperature made Hot Fusion very difficult to engineer. Because CIFN addresses both factors, CIFN is a more promising technique to be industrialized.

Guo Xiaoming [Physics and Computer Science Department, Wilfrid Laurier University, Waterloo, Ontario, N2L 3C5 (Canada)

2012-09-26T23:59:59.000Z

205

Collective motion in quantum diffusive environment  

E-Print Network (OSTI)

The general problem of dissipation in macroscopic large-amplitude collective motion and its relation to energy diffusion of intrinsic degrees of freedom of a nucleus is studied. By applying the cranking approach to the nuclear many-body system, a set of coupled dynamical equations for the collective classical variable and the quantum mechanical occupancies of the intrinsic nuclear states is derived. Different dynamical regimes of the intrinsic nuclear motion and its consequences on time properties of collective dissipation are discussed.

V. M. Kolomietz; S. Å berg; S. V. Radionov

2007-06-16T23:59:59.000Z

206

Ground Motion Workshop  

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

2nd Advanced ICFA Beam Dynamics Workshop 2nd Advanced ICFA Beam Dynamics Workshop on Ground Motion in Future Accelerators November 6 - 9, 2000 SLAC Coordinators: Andrei Seryi & Tor Raubenheimer Proceedings Updated June 26, 2001 Agenda and Presentations Workshop photos Summaries Useful links Poster Goals Introduction to the problems Structure Registration Registered participants Committees Location, Accommodations and Travel Workshop on Ground Motion in Future Accelerators A workshop was held at SLAC that was devoted to ground motion and its effects on future accelerators. Ground motion and vibration can be a limiting effect in synchrotron light sources, hadron circular colliders, and electron/positron linear colliders. Over the last several years, there has been significant progress in the understanding of the ground motion and its effects, however, there are

207

A geometric approach to collective motion  

Science Conference Proceedings (OSTI)

We introduce the total s-energy of a multiagent system and bound its maximum asymptotic value. This gives us a new analytical device to study the convergence rate of bidirectional agreement dynamics. We use it to bound the convergence rate of ... Keywords: agreement dynamics, collective motion, total s-energy

Bernard Chazelle

2010-06-01T23:59:59.000Z

208

Compensation of Wave-Induced Motion and Force Phenomena for Ship-Based High Performance Robotic and Human Amplifying Systems  

SciTech Connect

The decrease in manpower and increase in material handling needs on many Naval vessels provides the motivation to explore the modeling and control of Naval robotic and robotic assistive devices. This report addresses the design, modeling, control and analysis of position and force controlled robotic systems operating on the deck of a moving ship. First we provide background information that quantifies the motion of the ship, both in terms of frequency and amplitude. We then formulate the motion of the ship in terms of homogeneous transforms. This transformation provides a link between the motion of the ship and the base of a manipulator. We model the kinematics of a manipulator as a serial extension of the ship motion. We then show how to use these transforms to formulate the kinetic and potential energy of a general, multi-degree of freedom manipulator moving on a ship. As a demonstration, we consider two examples: a one degree-of-freedom system experiencing three sea states operating in a plane to verify the methodology and a 3 degree of freedom system experiencing all six degrees of ship motion to illustrate the ease of computation and complexity of the solution. The first series of simulations explore the impact wave motion has on tracking performance of a position controlled robot. We provide a preliminary comparison between conventional linear control and Repetitive Learning Control (RLC) and show how fixed time delay RLC breaks down due to the varying nature wave disturbance frequency. Next, we explore the impact wave motion disturbances have on Human Amplification Technology (HAT). We begin with a description of the traditional HAT control methodology. Simulations show that the motion of the base of the robot, due to ship motion, generates disturbances forces reflected to the operator that significantly degrade the positioning accuracy and resolution at higher sea states. As with position-controlled manipulators, augmenting the control with a Repetitive Learning Controller has little impact due to the variable nature of the wave period. We then introduce a new approach to HAT control, Ship Motion Compensation for Force Control Systems (SMCFCS). This basic approach uses inclinometer and acceleration information from the base of the robot to compensate for ship motion disturbances. Results of the simulation study show over an order of magnitude decrease in the disturbance force reflected back to the operator and an order of magnitude increase in positioning accuracy and resolution.

Love, LJL

2003-09-24T23:59:59.000Z

209

Motion and attention in a kinetic videoconferencing proxy  

Science Conference Proceedings (OSTI)

Compared to collocated interaction, videoconferencing disrupts the ability to use gaze and gestures to mediate interaction, direct reactions to specific people, and provide a sense of presence for the satellite (i.e., remote) participant. We developed ... Keywords: gaze awareness, proxy, telepresence, video-mediated communication, videoconferencing

David Sirkin; Gina Venolia; John Tang; George Robertson; Taemie Kim; Kori Inkpen; Mara Sedlins; Bongshin Lee; Mike Sinclair

2011-09-01T23:59:59.000Z

210

Kinetics and energy states of nanoclusters in the initial stage of homogeneous condensation at high supersaturation degrees  

Science Conference Proceedings (OSTI)

The condensation of metal vapor in an inert gas is studied by the molecular dynamics method. Two condensation regimes are investigated: with maintenance of partial pressure of the metal vapor and with a fixed number of metal atoms in the system. The main focus is the study of the cluster energy distribution over the degrees of freedom and mechanisms of the establishment of thermal equilibrium. It is shown that the internal temperature of a cluster considerably exceeds the buffer gas temperature and the thermal balance is established for a time considerably exceeding the nucleation time. It is found that, when the metal vapor concentration exceeds 0.1 of the argon concentration, the growth of clusters with the highest possible internal energy occurs, the condensation rate being determined only by the rate of heat removal from clusters.

Vorontsov, A. G., E-mail: sas@physics.susu.ac.ru [South Ural State University (Russian Federation); Gel'chinskii, B. R.; Korenchenko, A. E. [Russian Academy of Sciences, Institute of Metallurgy, Ural Branch (Russian Federation)

2012-11-15T23:59:59.000Z

211

Pseudo Slice Energy Spread in Dynamics of Electron Beams Moving through Magnetic Bends  

E-Print Network (OSTI)

In the previous canonical formulation of beam dynamics for an electron bunch moving ultrarelativistically through magnetic bending systems, we have shown that the transverse dynamics equation for a particle in the bunch has a driving term which behaves as the centrifugal force caused by the particle's initial potential energy due to collective particle interactions within the bunch. As a result, the initial potential energy at the entrance of a bending system, which we call pseudo (kinetic) energy, is indistinguishable from the usual kinetic energy offset from the design energy in its perturbation to particle optics through dispersion and momentum compaction. In this paper, in identifying this centrifugal force on particles as the remnant of the CSR cancellation effect in transverse particle dynamics, we show how the dynamics equation in terms of the canonical momentum for beam motion on a curved orbit is related to the Panofsky-Wenzel theorem for wakefields for beam motion on a straight path. It is shown tha...

Li, Rui

2014-01-01T23:59:59.000Z

212

Programmable motion effects  

Science Conference Proceedings (OSTI)

Although animation is one of the most compelling aspects of computer graphics, the possibilities for depicting the movement that make dynamic scenes so exciting remain limited for both still images and animations. In our work, we experiment with motion ...

Johannes Schmid; Robert W. Sumner; Huw Bowles; Markus Gross

2010-07-01T23:59:59.000Z

213

Experimental search for solar hidden photons in the eV energy range using kinetic mixing with photons  

E-Print Network (OSTI)

We have searched for solar hidden photons in the eV energy range using a dedicated hidden photon detector. The detector consisted of a parabolic mirror with a diameter of 500mm and a focal length of 1007mm installed in a vacuum chamber, and a photomultiplier tube at its focal point. The detector was attached to the Tokyo axion helioscope, Sumico which has a mechanism to track the sun. From the result of the measurement, we found no evidence for the existence of hidden photons and set a limit on the photon-hidden photon mixing parameter \\chi depending on the hidden photon mass m_{\\gamma '}.

T. Mizumoto; R. Ohta; T. Horie; J. Suzuki; Y. Inoue; M. Minowa

2013-02-05T23:59:59.000Z

214

Hydrogen Atom in Relativistic Motion  

E-Print Network (OSTI)

The Lorentz contraction of bound states in field theory is often appealed to in qualitative descriptions of high energy particle collisions. Surprisingly, the contraction has not been demonstrated explicitly even in simple cases such as the hydrogen atom. It requires a calculation of wave functions evaluated at equal (ordinary) time for bound states in motion. Such wave functions are not obtained by kinematic boosts from the rest frame. Starting from the exact Bethe-Salpeter equation we derive the equal-time wave function of a fermion-antifermion bound state in QED, i.e., positronium or the hydrogen atom, in any frame to leading order in alpha. We show explicitly that the bound state energy transforms as the fourth component of a vector and that the wave function of the fermion-antifermion Fock state contracts as expected. Transverse photon exchange contributes at leading order to the binding energy of the bound state in motion. We study the general features of the corresponding fermion-antifermion-photon Fock states, and show that they do not transform by simply contracting. We verify that the wave function reduces to the light-front one in the infinite momentum frame.

M. Jarvinen

2004-11-16T23:59:59.000Z

215

Vibration energy harvesting from random force and motion excitations This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network (OSTI)

Design Considerations for a Universal Smart Energy Module for Energy Harvesting in Wireless Sensor. It supports a wide range of energy harvesters and energy storage systems. The focus is on the efficient to a few years at most. Energy harvesting is a suitable solution for a potentially unlimited lifetime

Zuo, Lei

216

Experimental search for solar hidden photons in the eV energy range using kinetic mixing with photons  

E-Print Network (OSTI)

We have searched for solar hidden photons in the eV energy range using a dedicated hidden photon detector. The detector consisted of a parabolic mirror with a diameter of 500mm and a focal length of 1007mm installed in a vacuum chamber, and a photomultiplier tube at its focal point. The detector was attached to the Tokyo axion helioscope, Sumico which has a mechanism to track the sun. From the result of the measurement, we found no evidence for the existence of hidden photons and set a limit on the photon-hidden photon mixing parameter \\chi depending on the hidden photon mass m_{\\gamma '}. This limit is most stringent in the hidden photon mass region between 10^{-3} and 10^{-1} eV.

Mizumoto, T; Horie, T; Suzuki, J; Inoue, Y; Minowa, M

2013-01-01T23:59:59.000Z

217

Large-Scale Eddies in the Unstably Stratified Atmospheric Surface Layer. Part II: Turbulent Pressure Fluctuations and the Budgets of Heat Flux, Stress and Turbulent Kinetic Energy  

Science Conference Proceedings (OSTI)

A method is developed for retrieving turbulent pressure fluctuations from tower measurements of velocity and temperature, through use of the equations of motion. This method is applied to a series of large-scale eddies which are defined by their ...

J. M. Wilczak; Joost A. Businger

1984-12-01T23:59:59.000Z

218

A Kinetic Monte Carlo Model for Material Aging: Simulations of ...  

Science Conference Proceedings (OSTI)

In this paper, we develop a kinetic Monte Carlo framework aiming at ... A Controlled Stress Energy Minimization Method for Coarse-grained Atomistic Simulation.

219

Thermal Stabilization of Nanocrystalline Grain Size by Kinetic and ...  

Science Conference Proceedings (OSTI)

This talk will review both kinetic and thermodynamic mechanisms and ... Basic Criteria for Formation of Growth Twins in High Stacking Fault Energy Metals.

220

Visualizing Motion in Potential Wells* Pratibha Jolly  

E-Print Network (OSTI)

1 Visualizing Motion in Potential Wells* Pratibha Jolly Department of Physics, University of Delhi well potential diagrams using either the velocity data and assuming conservation of energy or the force wells on the one hand and establishing the relationship between the operative forces and the potential

Zollman, Dean

Note: This page contains sample records for the topic "motion kinetic energy" 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

Identification of Low-Dimensional Energy Containing/Flux Transporting Eddy Motion in the Atmospheric Surface Layer Using Wavelet Thresholding Methods  

Science Conference Proceedings (OSTI)

The partitioning of turbulent perturbations into a “low-dimensional” active part responsible for much of the turbulent energy and fluxes and a “high-dimensional” passive part that contributes little to turbulent energy and transport dynamics is ...

Gabriel Katul; Brani Vidakovic

1998-02-01T23:59:59.000Z

222

Computational Thermodynamics and Kinetics  

Science Conference Proceedings (OSTI)

Jul 31, 2011 ... About this Symposium. Meeting, 2012 TMS Annual Meeting & Exhibition. Symposium, Computational Thermodynamics and Kinetics.

223

VIIRS Captures Aurora Motions  

Science Conference Proceedings (OSTI)

It has been found that the Day/Night Band of the Visible Infrared Imaging Radiometer Suite is capable of observing rapid motions of the aurora. The images that led to this discovery are shown. Shifts in the apparent position of the aurora boundary between ...

Curtis J. Seaman; Steven D. Miller

224

Chapter 13. Chemical Kinetics  

E-Print Network (OSTI)

of chemical reactions. · Only gases, for which the kinetic theory of Chapter 4 is applicable, are consideredChapter 13. Chemical Kinetics #12;· Why do some chemical reactions proceed with lighting speed when the way in which molecules combine to form products? · All of these questions involve chemical kinetics

Ihee, Hyotcherl

225

Noncommutative geometry inspired wormholes with conformal motion  

E-Print Network (OSTI)

This paper discusses a new wormhole solution that admits conformal motion, given a noncommutative-geometry background. After a discussion of the wormhole geometry and the energy conditions, the analysis proceeds with the calculation of the active gravitational mass, a discussion of the TOV equation describing the equilibrium conditions, as well as the nature of the total gravitational energy. The wormhole spacetime is not asymptotically flat and is therefore cut off at some radial distance and joined to an exterior vacuum solution.

Farook Rahaman; Saibal Ray; G. S. Khadekar; P. K. F. Kuhfittig; Indrani Karar

2013-05-17T23:59:59.000Z

226

The aMotion toolkit: painting with affective motion textures  

Science Conference Proceedings (OSTI)

Visual artists and designers frequently use carefully crafted motion textures -- patterns of ambient motion throughout a scene -- to imbue the atmosphere with affect. The design of such ambient visual cues is an elusive topic that has been studied by ...

Matt Lockyer; Lyn Bartram

2012-06-01T23:59:59.000Z

227

Motion of extended charges in classical electrodynamics  

SciTech Connect

The Lorentz--Dirac theory of radiation reaction on the motion of point charges is beset by the well known problems of runaway solutions and preacceleration. We examine the classical theory of extended charged particles and obtain a differential-difference type equation of motion. Analysis of this equation reveals that the theory is internally consistent (i.e., no runaways or acausality) whenever the size of the particle exceeds the classical radius (defined as the radius for which the electrostatic self-energy equals the mass of the particle). A specific example is presented which explicitly shows the different character of the extended and point charge solutions. (AIP)

Levine, H.; Moniz, E.J.; Sharp, D.H.

1977-01-01T23:59:59.000Z

228

Relativistic Brownian motion: From a microscopic binary collision model to the Langevin equation  

E-Print Network (OSTI)

The Langevin equation (LE) for the one-dimensional relativistic Brownian motion is derived from a microscopic collision model. The model assumes that a heavy point-like Brownian particle interacts with the lighter heat bath particles via elastic hard-core collisions. First, the commonly known, non-relativistic LE is deduced from this model, by taking into account the non-relativistic conservation laws for momentum and kinetic energy. Subsequently, this procedure is generalized to the relativistic case. There, it is found that the relativistic stochastic force is still $\\gd$-correlated (white noise) but does \\emph{no} longer correspond to a Gaussian white noise process. Explicit results for the friction and momentum-space diffusion coefficients are presented and discussed.

Jörn Dunkel; Peter Hänggi

2006-07-04T23:59:59.000Z

229

Modeling, Kinetics, and Energy Consumption  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2011 TMS Annual Meeting & Exhibition. Symposium , General Abstracts: Materials Processing and Manufacturing Division.

230

Strong motion duration and earthquake magnitude relationships  

Science Conference Proceedings (OSTI)

Earthquake duration is the total time of ground shaking from the arrival of seismic waves until the return to ambient conditions. Much of this time is at relatively low shaking levels which have little effect on seismic structural response and on earthquake damage potential. As a result, a parameter termed ``strong motion duration`` has been defined by a number of investigators to be used for the purpose of evaluating seismic response and assessing the potential for structural damage due to earthquakes. This report presents methods for determining strong motion duration and a time history envelope function appropriate for various evaluation purposes, for earthquake magnitude and distance, and for site soil properties. There are numerous definitions of strong motion duration. For most of these definitions, empirical studies have been completed which relate duration to earthquake magnitude and distance and to site soil properties. Each of these definitions recognizes that only the portion of an earthquake record which has sufficiently high acceleration amplitude, energy content, or some other parameters significantly affects seismic response. Studies have been performed which indicate that the portion of an earthquake record in which the power (average rate of energy input) is maximum correlates most closely with potential damage to stiff nuclear power plant structures. Hence, this report will concentrate on energy based strong motion duration definitions.

Salmon, M.W.; Short, S.A. [EQE International, Inc., San Francisco, CA (United States); Kennedy, R.P. [RPK Structural Mechanics Consulting, Yorba Linda, CA (United States)

1992-06-01T23:59:59.000Z

231

CEUS Ground Motion Project  

Science Conference Proceedings (OSTI)

Three utilities are currently pursuing early site permits (ESPs) for possible siting of new nuclear power plant facilities in the central and eastern United States (CEUS). The geological, seismological, and engineering characteristics of a site and its environs must be investigated in sufficient scope and detail. These investigations are needed to adequately evaluate a proposed site and to provide sufficient information for estimating the site's safe shutdown earthquake (SSE) ground motion. Nuclear Regul...

2003-12-02T23:59:59.000Z

232

Liouville Brownian motion  

E-Print Network (OSTI)

We construct a stochastic process, called the Liouville Brownian motion which we conjecture to be the scaling limit of random walks on large planar maps which are embedded in the euclidean plane or in the sphere in a conformal manner. Our construction works for all universality classes of planar maps satisfying $\\gamma standard two-dimensional brownian motion $B_t$ depending on the local behaviour of the Liouville measure "$M_\\gamma(dz) = e^{\\gamma X} dz$" (where $X$ is a Gaussien Free Field, say on $\\S^2$). A significant part of the paper focuses on extending this construction simultaneously to all points $x\\in \\R^2$ or $\\S^2$ in such a way that one obtains a semi-group $P_\\t$ (the Liouville semi-group). We prove that the associated Markov process is a Feller diffusion for all $\\gammaright quantum gravity diffusion to consider). This Liouville Brownian motion enables us to give sense to part of the celebrated Feynman path integrals which are at the root of Liouville quantum gravity, the Liouville Brownian ones. Finally we believe that this work sheds some new light on the difficult problem of constructing a quantum metric out of the exponential of a Gaussian Free Field (see conjecture \\ref{c.metric}).

Christophe Garban; Rémi Rhodes; Vincent Vargas

2013-01-14T23:59:59.000Z

233

Painterly animation using motion maps  

Science Conference Proceedings (OSTI)

Starting from an input video, we replicate the manual technique of paint-on-glass animation. Motion maps are used to represent the regions where changes occur between frames. Edges are the key to identifying frame-to-frame changes, and a strong motion ... Keywords: Metamorphosis, Motion map, Non-photorealistic rendering & animation, Painterly rendering & animation, Strong edges

Youngsup Park; Kyunghyun Yoon

2008-01-01T23:59:59.000Z

234

Invertible motion blur in video  

Science Conference Proceedings (OSTI)

We show that motion blur in successive video frames is invertible even if the point-spread function (PSF) due to motion smear in a single photo is non-invertible. Blurred photos exhibit nulls (zeros) in the frequency transform of the PSF, leading to ... Keywords: PSF, PSF estimation, computational photography, invertibility, motion deblurring

Amit Agrawal; Yi Xu; Ramesh Raskar

2009-07-01T23:59:59.000Z

235

Cosmological Coincidence and Dark Mass Problems in Einstein Universe and Friedman Dust Universe with Einstein's Lambda Quantum Cosmology Dark Energy Schroedinger Wave Motion  

E-Print Network (OSTI)

In this paper, it is shown that the cosmological model that was introduced in a sequence of three earlier papers under the title, A Dust Universe Solution to the Dark Energy Problem can be used to analyse and solve the Cosmological Coincidence Problem. The generic coincidence problem that appears in the original Einstein universe model is shown to arise from a misunderstanding about the magnitude of dark energy density and the epoch time governing the appearance of the integer relation between dark energy and normal energy density. The solution to the generic case then clearly points to the source of the time coincidence integer problem in the Friedman dust universe model. It is then possible to eliminate this coincidence by removing a degeneracy between different measurement epoch times. In this paper's first appendix, a fundamental time dependent relation between dark mass and dark energy is derived with suggestions how this relation could explain cosmological voids and the clumping of dark mass to become visible matter. In this paper's second appendix, it is shown that that dark energy is a conserved with time substance that is everywhere and for all time permeable to the dark mass and visible mass of which the contracting or expanding universe is composed. The last two appendices involve detailed studies of cosmology, quantum dark energy related issues. There are more detailed abstracts given with all four appendices.

James G. Gilson

2007-05-20T23:59:59.000Z

236

Computational Thermodynamics and Kinetics  

Science Conference Proceedings (OSTI)

A Comprehensive Investigation of Low Angle Grain Boundary Mobility in Pure Al ... A New Treatment for the Kinetics of Isothermal Oxidation of Zinc Powders.

237

A generative model for dynamic canvas motion  

Science Conference Proceedings (OSTI)

We present techniques for constructing realistic canvas and paper models and for enabling interactive dynamic canvas motion. Dynamic canvas motion means that there is a correspondence between the motion of canvas features and the motion of the models ...

Matthew Kaplan; Elaine Cohen

2005-05-01T23:59:59.000Z

238

New Methods in Motion Tracking to Generate Motion-Corrected ...  

can result in measurement error or inability to properly track motion ... modeling of human diseases Patents James S. Goddard and Justin S. Baba. ...

239

Development and validation of compressible mixture viscous fluid algorithm applied to predict the evolution of inertial fusion energy chamber gas and the impact of gas on direct-drive target survival  

E-Print Network (OSTI)

conversion be- tween kinetic (green) and thermal energy (energy lost through ra- diation (red), kinetic (green), andenergy lost through radiation (red), kinetic (green), and

Martin, Robert Scott

2011-01-01T23:59:59.000Z

240

EIA Energy Kids - Forms of Energy - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Energy forms are either potential or kinetic. Potential energy comes in forms that are stored including — chemical, gravitational, mechanical, and nuclear.

Note: This page contains sample records for the topic "motion kinetic energy" 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

DOE Defends Its Motion to Withdraw Yucca Mountain Application | Department  

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

Defends Its Motion to Withdraw Yucca Mountain Application Defends Its Motion to Withdraw Yucca Mountain Application DOE Defends Its Motion to Withdraw Yucca Mountain Application May 27, 2010 - 2:22pm Addthis Today, the United States Department of Energy filed with the NRC's Atomic Safety and Licensing Board a reply brief making clear that its motion to withdraw the pending application to license the Yucca Mountain geologic repository is authorized by the Atomic Energy Act (AEA) and consistent with the Nuclear Waste Policy Act (NWPA). As today's filing details, the AEA vests the Department with broad authority over the disposal of spent nuclear fuel and high-level radioactive waste. The NWPA does not strip the Department of that authority or otherwise compel the Department to go forward with the construction of the Yucca Mountain repository. Rather, the

242

DOE Defends Its Motion to Withdraw Yucca Mountain Application | Department  

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

Its Motion to Withdraw Yucca Mountain Application Its Motion to Withdraw Yucca Mountain Application DOE Defends Its Motion to Withdraw Yucca Mountain Application May 27, 2010 - 2:22pm Addthis Today, the United States Department of Energy filed with the NRC's Atomic Safety and Licensing Board a reply brief making clear that its motion to withdraw the pending application to license the Yucca Mountain geologic repository is authorized by the Atomic Energy Act (AEA) and consistent with the Nuclear Waste Policy Act (NWPA). As today's filing details, the AEA vests the Department with broad authority over the disposal of spent nuclear fuel and high-level radioactive waste. The NWPA does not strip the Department of that authority or otherwise compel the Department to go forward with the construction of the Yucca Mountain repository. Rather, the

243

Thermodynamic and Kinetic Modeling  

Science Conference Proceedings (OSTI)

Oct 11, 2012... capability of the coating and thus the achievable engine efficiency. ... Aluminide coating of steels enables more efficient power generation through ... and kinetic modeling in order to build a time and temperature dependent ...

244

Ontario Power Generation Motion to Intervene & Comments in FE Docket No.  

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

Ontario Power Generation Motion to Intervene & Comments in FE Ontario Power Generation Motion to Intervene & Comments in FE Docket No. 99-1 Ontario Power Generation Motion to Intervene & Comments in FE Docket No. 99-1 Ontario Power Generation hereby moves to intervene in, and comments on, the DOE's proposed open access requirements for International Electric Transmission Facilities. Ontario Power Company Motion to Intervene & Comments in FE Docket No. 99-1 More Documents & Publications Motion to Intervene and Comments of Public Utility District No. 1 (Pend Oreille County, Washington) on PP 99-1 Notice of Intent to Amend Presidential Permit Motion to intervene and comments of the energy services group of Hydro-Quebec and H.Q. Energy Services (U.S.) Inc, on FE 99-1 Joint Motion to Intervene of Northern States Power Company (Minnesota) et

245

Correspondence-free Structure from Motion  

Science Conference Proceedings (OSTI)

We present a novel approach for the estimation of 3D-motion directly from two images using the Radon transform. The feasibility of any camera motion is computed by integrating over all feature pairs that satisfy the epipolar constraint. This integration ... Keywords: correspondence-free motion, harmonic analysis, motion estimation, registration, structure from motion

Ameesh Makadia; Christopher Geyer; Kostas Daniilidis

2007-12-01T23:59:59.000Z

246

Towards cleaner combustion engines through groundbreaking detailed chemical kinetic models  

E-Print Network (OSTI)

Towards cleaner combustion engines through groundbreaking detailed chemical kinetic models of more predictive and more accurate detailed chemical kinetic models for the combustion of fuels that the combustion of liquid fuels will remain the main source of energy for transportation for the next 50 years.1

247

Kinetic Modeling of Esterification of Ethylene Glycol with Acetic Acid  

SciTech Connect

The reaction kinetics of the esterification of ethylene glycol with acetic acid in the presence of cation exchange resin has been studied and kinetic models based on empirical and Langmuir approach has been developed. The Langmuir based model involving eight kinetic parameters fits experimental data much better compared to empirical model involving four kinetic parameters. The effect of temperature and catalyst loading on the reaction system has been analyzed. Further, the activation energy and frequency factor of the rate constants for Langmuir based model has been estimated.

Yadav, Vishnu P.; Maity, Sunil K. [Department of Chemical Engineering, Indian Institute of Technology, Hyderabad, Ordnance Factory Estate, Yeddumailiram-502205, Andhra Pradesh (India); Mukherjee, Rudra Palash [Department of Chemical Engineering, National Institute of Technology, Durgapur, Mahatma Gandhi Avenue, Durgapur-713209, West Bengal (India); Bantraj, Kandi [Department of Chemical Engineering, National Institute of Technology, Rourkela-769008, Orissa (India)

2010-10-26T23:59:59.000Z

248

MHK Technologies/Wave Energy Propulsion | Open Energy Information  

Open Energy Info (EERE)

< MHK Technologies < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Wave Energy Propulsion.jpg Technology Profile Primary Organization Kneider Innovations Technology Resource Click here Wave Technology Type Click here Attenuator Technology Description The device concept is a converter of the vertical potential energy moving wave to push the boat on horizontal kinetic motion Optimum Marine/Riverline Conditions The device is compliant for boat navigating on sea and oceans or lakes when water levels are changing cyclicly waves Technology Dimensions Device Testing Date Submitted 18:32.0 << Return to the MHK database homepage Retrieved from "http://en.openei.org/w/index.php?title=MHK_Technologies/Wave_Energy_Propulsion&oldid=681483"

249

Distributed Energy Harvesting for Energy Neutral Sensor Networks  

E-Print Network (OSTI)

adja@cs.berkeley.edu Energy Harvesting Projects EDITOR’Sdevices that combine energy harvesting and data acquisition.kinetic and ther- mal energy harvesting from human users’

Kansal, Aman; Srivastava, Mani B.

2005-01-01T23:59:59.000Z

250

Model Independent Bounds on Kinetic Mixing  

SciTech Connect

New Abelian vector bosons can kinetically mix with the hypercharge gauge boson of the Standard Model. This letter computes the model independent limits on vector bosons with masses from 1 GeV to 1 TeV. The limits arise from the numerous e{sup +}e{sup -} experiments that have been performed in this energy range and bound the kinetic mixing by {epsilon} {approx}< 0.03 for most of the mass range studied, regardless of any additional interactions that the new vector boson may have.

Hook, Anson; Izaguirre, Eder; Wacker, Jay G.; /SLAC

2011-08-22T23:59:59.000Z

251

Universal equations and constants of turbulent motion  

E-Print Network (OSTI)

This paper presents a parameter-free theory of shear-generated turbulence at asymptotically high Reynolds numbers in incompressible fluids. It is based on a two-fluids concept. Both components are materially identical and inviscid. The first component is an ensemble of quasi-rigid dipole-vortex tubes as quasi-particles in chaotic motion. The second is a superfluid performing evasive motions between the tubes. The local dipole motions follow Helmholtz' law. The vortex radii scale with the energy-containing length scale. Collisions between quasi-particles lead either to annihilation (likewise rotation, turbulent dissipation) or to scattering (counterrotation, turbulent diffusion). There are analogies with birth and death processes of population dynamics and their master equations. For free homogeneous decay the theory predicts the TKE to follow 1/t. With an adiabatic condition at the wall it predicts the logarithmic law with von Karman's constant as 1/\\sqrt{2 pi} = 0.399. Likewise rotating couples form dissipative patches almost at rest ($\\rightarrow$ intermittency) wherein the spectrum evolves like an "Apollonian gear" as discussed first by Herrmann, 1990. On this basis the prefactor of the 3D-wavenumber spectrum is predicted as (1/3)(4 pi)^{2/3}=1.8; in the Lagrangian frequency spectrum it is simply 2. The results are situated well within the scatter range of observational, experimental and DNS results.

Helmut Z. Baumert

2012-03-22T23:59:59.000Z

252

Fragmentation of multiply charged hydrocarbon molecules C{sub n}H{sup q+} (n{<=} 4, q{<=} 9) produced in high-velocity collisions: Branching ratios and kinetic energy release of the H{sup +} fragment  

Science Conference Proceedings (OSTI)

Fragmentation branching ratios for channels involving H{sup +} emission and associated kinetic energy release of the H{sup +} fragment [KER(H{sup +})] have been measured for multicharged C{sub n}H{sup q+} molecules produced in high velocity (3.6 a.u.) collisions between C{sub n}H{sup +} projectiles and helium atoms. For CH{sup q+} (q{=} 5), inner-shell ionization contributed in a prominent way to the ion production. In these two cases it was shown that measured KER(H{sup +}) were in good agreement with PCCM predictions when those were corrected for Auger relaxation with the same Auger lifetime value as in CH{sup 3+}.

Beroff, K.; Pino, T.; Carpentier, Y. [Institut des Sciences Moleculaires d'Orsay (ISMO), UMR CNRS 8214, Universite Paris Sud 11, bat.210, F-91405 Orsay Cedex (France); Van-Oanh, N. T. [Laboratoire de Chimie Physique (LCP), UMR CNRS 8000, Universite Paris Sud 11, Bat.349, F-91405 Orsay Cedex (France); Chabot, M.; Tuna, T.; Martinet, G. [Institut de Physique Nucleaire d'Orsay (IPNO), IN2P3- CNRS, Universite Paris Sud 11, F-91406 Orsay Cedex (France); Le Padellec, A. [Institut de Recherche en Astrophysique et Planetologie (IRAP), UMR CNRS 5187, Universite de Toulouse, 9 avenue du Colonel Roche, F-31028 Toulouse Cedex 9 (France); Lavergne, L. [Laboratoire de Physique Nucleaire et de Hautes Energies (LPNHE) UPMC, UPD, CNRS-IN2P3, 4 Place Jussieu, F-75005 Paris (France)

2011-09-15T23:59:59.000Z

253

Inertial range turbulence in kinetic plasmas  

E-Print Network (OSTI)

The transfer of turbulent energy through an inertial range from the driving scale to dissipative scales in a kinetic plasma followed by the conversion of this energy into heat is a fundamental plasma physics process. A theoretical foundation for the study of this process is constructed, but the details of the kinetic cascade are not well understood. Several important properties are identified: (a) the conservation of a generalized energy by the cascade; (b) the need for collisions to increase entropy and realize irreversible plasma heating; and (c) the key role played by the entropy cascade--a dual cascade of energy to small scales in both physical and velocity space--to convert ultimately the turbulent energy into heat. A strategy for nonlinear numerical simulations of kinetic turbulence is outlined. Initial numerical results are consistent with the operation of the entropy cascade. Inertial range turbulence arises in a broad range of space and astrophysical plasmas and may play an important role in the thermalization of fusion energy in burning plasmas.

G. G. Howes

2007-11-27T23:59:59.000Z

254

Role of Brownian Motion Hydrodynamics on Nanofluid Thermal Conductivity  

Science Conference Proceedings (OSTI)

We use a simple kinetic theory based analysis of heat flow in fluid suspensions of solid nanoparticles (nanofluids) to demonstrate that the hydrodynamics effects associated with Brownian motion have a minor effect on the thermal conductivity of the nanofluid. Our conjecture is supported by the results of molecular dynamics simulations of heat flow in a model nanofluid with well-dispersed particles. Our findings are consistent with the predictions of the effective medium theory as well as with recent experimental results on well dispersed metal nanoparticle suspensions.

W Evans, J Fish, P Keblinski

2005-11-14T23:59:59.000Z

255

Microsoft Word - CCCNH Motion to Intervene  

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

Campton Conservation Commission Campton Conservation Commission c/o Campton Selectmen's Office 12 Gearty Way Campton, NH 03223 13 September 2013 Mr. Christopher Lawrence Office of Electricity Delivery and Energy Reliability (OE-20) US Department of Energy 1000 Independence Avenue, SW Washington, DC 20585 Re: Northern Pass Transmission, LLC, Application for Presidential Permit OE Docket No. PP-371 Dear Mr. Lawrence: Pursuant to Rules 212 and 214 of the Rules of Practice and Procedure of the Federal Energy Regulatory Commission (18 CFR 385.212 and 214 [2010]), we are enclosing for filing our Motion to Intervene to the above-captioned proceeding. In accordance with the Notice of Application for this proceeding (75 FR 69990), we are enclosing fifteen (15) copies.

256

Kinetic Alfven double layer formed by electron viscosity  

SciTech Connect

The effect of the electron viscosity on the kinetic Alfven solitary wave is investigated. It is found that small electron viscosity changes the electron motion along the magnetic field producing a boundary layer, and thus that in a low beta electron-ion plasma({beta} Much-Less-Than m{sub e}/m{sub i}), an obliquely propagating kinetic solitary Alfven wave can become a double layer. This double layer can exist in the sub-Alfvenic and super-Alfvenic regimes. The length scale of density drop for this double layer is on the order of that of the conventional kinetic solitary Alfven wave, and thus this double layer can accelerate electrons on a very short length scale.

Woo, M. H.; Ryu, C.-M. [Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); Choi, C. R. [Department of Physics, Korea Advanced Institute of Science and Technology, Taejon 305-701 (Korea, Republic of)

2012-07-15T23:59:59.000Z

257

Inertial range turbulence in kinetic plasmas  

E-Print Network (OSTI)

The transfer of turbulent energy through an inertial range from the driving scale to dissipative scales in a kinetic plasma followed by the conversion of this energy into heat is a fundamental plasma physics process. A theoretical foundation for the study of this process is constructed, but the details of the kinetic cascade are not well understood. Several important properties are identified: (a) the conservation of a generalized energy by the cascade; (b) the need for collisions to increase entropy and realize irreversible plasma heating; and (c) the key role played by the entropy cascade--a dual cascade of energy to small scales in both physical and velocity space--to convert ultimately the turbulent energy into heat. A strategy for nonlinear numerical simulations of kinetic turbulence is outlined. Initial numerical results are consistent with the operation of the entropy cascade. Inertial range turbulence arises in a broad range of space and astrophysical plasmas and may play an important role in the ther...

Howes, G G

2007-01-01T23:59:59.000Z

258

C-1: A Kinetic Study of the Leaching of Germanium Dust and Fume ...  

Science Conference Proceedings (OSTI)

The apparent activation energy for the dissolution of germanium has been evaluated ... Moreover, the apparent reaction order and the kinetic equation for the ...

259

Disk Accretion Flow Driven by Large-Scale Magnetic Fields: Solutions with Constant Specific Energy  

E-Print Network (OSTI)

(Abridged) We study the dynamical evolution of a stationary, axisymmetric, and perfectly conducting cold accretion disk containing a large-scale magnetic field around a Kerr black hole, trying to understand the relation between accretion and the transportation of angular momentum and energy. We solve the radial momentum equation for solutions corresponding to an accretion flow that starts from a subsonic state at infinity, smoothly passes the fast critical point, then supersonically falls into the horizon of the black hole. The solutions always have the following features: 1) The specific energy of fluid particles remains constant but the specific angular momentum is effectively removed by the magnetic field. 2) At large radii, where the disk motion is dominantly rotational, the energy density of the magnetic field is equipartitioned with the rotational energy density of the disk. 3) Inside the fast critical point, where radial motion becomes important, the ratio of the electromagnetic energy density to the kinetic energy density drops quickly. The results indicate that: 1) Disk accretion does not necessarily imply energy dissipation since magnetic fields do not have to transport or dissipate a lot of energy as they effectively transport angular momentum. 2) When resistivity is small, the large-scale magnetic field is amplified by the shearing rotation of the disk until the magnetic energy density is equipartitioned with the rotational energy density, ending up with a geometrically thick disk. This is in contrast with the evolution of small-scale magnetic fields where if the resistivity is nonzero the magnetic energy density is likely to be equipartitioned with the kinetic energy density associated with local random motions (e.g., turbulence), making a thin Keplerian disk possible.

Li-Xin Li

2002-12-20T23:59:59.000Z

260

Pebble-bed pebble motion: Simulation and Applications  

Science Conference Proceedings (OSTI)

Pebble bed reactors (PBR) have moving graphite fuel pebbles. This unique feature provides advantages, but also means that simulation of the reactor requires understanding the typical motion and location of the granular flow of pebbles. This report presents a method for simulation of motion of the pebbles in a PBR. A new mechanical motion simulator, PEBBLES, efficiently simulates the key elements of motion of the pebbles in a PBR. This model simulates gravitational force and contact forces including kinetic and true static friction. It's used for a variety of tasks including simulation of the effect of earthquakes on a PBR, calculation of packing fractions, Dancoff factors, pebble wear and the pebble force on the walls. The simulator includes a new differential static friction model for the varied geometries of PBRs. A new static friction benchmark was devised via analytically solving the mechanics equations to determine the minimum pebble-to-pebble friction and pebble-to-surface friction for a five pebble pyramid. This pyramid check as well as a comparison to the Janssen formula was used to test the new static friction equations. Because larger pebble bed simulations involve hundreds of thousands of pebbles and long periods of time, the PEBBLES code has been parallelized. PEBBLES runs on shared memory architectures and distributed memory architectures. For the shared memory architecture, the code uses a new O(n) lock-less parallel collision detection algorithm to determine which pebbles are likely to be in contact. The new collision detection algorithm improves on the traditional non-parallel O(n log(n)) collision detection algorithm. These features combine to form a fast parallel pebble motion simulation. The PEBBLES code provides new capabilities for understanding and optimizing PBRs. The PEBBLES code has provided the pebble motion data required to calculate the motion of pebbles during a simulated earthquake. The PEBBLES code provides the ability to determine the contact forces and the lengths of motion in contact. This information combined with the proper wear coefficients can be used to determine the dust production from mechanical wear. These new capabilities enhance the understanding of PBRs, and the capabilities of the code will allow future improvements in understanding.

Joshua J. Cogliati; Abderrafi M. Ougouag

2011-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Joint Motion to Intervene of Northern States Power Company (Minnesota) et al. on the Proposed Open Access Requirements  

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

Joint motion to intervene of the Northern States Power Company (Minnesota), the Northern States Power Company (Wisconsin), and NRG Energy, Incl on the Proposed Open Access Requirements for...

262

LLNL Chemical Kinetics Modeling Group  

DOE Green Energy (OSTI)

The LLNL chemical kinetics modeling group has been responsible for much progress in the development of chemical kinetic models for practical fuels. The group began its work in the early 1970s, developing chemical kinetic models for methane, ethane, ethanol and halogenated inhibitors. Most recently, it has been developing chemical kinetic models for large n-alkanes, cycloalkanes, hexenes, and large methyl esters. These component models are needed to represent gasoline, diesel, jet, and oil-sand-derived fuels.

Pitz, W J; Westbrook, C K; Mehl, M; Herbinet, O; Curran, H J; Silke, E J

2008-09-24T23:59:59.000Z

263

INTERPLAY OF THREE KINDS OF MOTION IN THE DISK COUNTERPART OF TYPE II SPICULES: UPFLOW, TRANSVERSAL, AND TORSIONAL MOTIONS  

SciTech Connect

Recently, it was shown that the complex dynamical behavior of spicules has to be interpreted as the result of simultaneous action of three kinds of motion: (1) field aligned flows, (2) swaying motions, and (3) torsional motions. We use high-quality observations from the CRisp Imaging SpectroPolarimeter at the Swedish 1-m Solar Telescope to investigate signs of these different kinetic modes in spicules on the disk. Earlier, rapid blue-shifted excursions (RBEs), short-lived absorption features in the blue wing of chromospheric spectral lines, were identified as the disk counterpart of type II spicules. Here we report the existence of similar absorption features in the red wing of the Ca II 8542 and H{alpha} lines: rapid redshifted excursions (RREs). RREs are found over the whole solar disk and are located in the same regions as RBEs: in the vicinity of magnetic field concentrations. RREs have similar characteristics as RBEs: they have similar lengths, widths, lifetimes, and average Doppler velocity. The striking similarity of RREs to RBEs implies that RREs are a manifestation of the same physical phenomenon and that spicules harbor motions that can result in a net redshift when observed on-disk. We find that RREs are less abundant than RBEs: the RRE/RBE detection count ratio is about 0.52 at disk center and 0.74 near the limb. We interpret the higher number of RBEs and the decreased imbalance toward the limb as an indication that field-aligned upflows have a significant contribution to the net Dopplershift of the structure. Most RREs and RBEs are observed in isolation, but we find many examples of parallel and touching RRE/RBE pairs which appear to be part of the same spicule. We interpret the existence of these RRE/RBE pairs and the observation that many RREs and RBEs have varying Dopplershift along their width as signs that torsional motion is an important characteristic of spicules. The fact that most RBEs and RREs are observed in isolation agrees with the idea that transversal swaying motion is another important kinetic mode. We find examples of transitions from RRE to RBE and vice versa. These transitions sometimes appear to propagate along the structure with speeds between 18 and 108 km s{sup -1} and can be interpreted as the sign of a transverse (Alfvenic) wave.

Sekse, D. H.; Rouppe van der Voort, L.; De Pontieu, B.; Scullion, E. [Institute of Theoretical Astrophysics, University of Oslo, P.O. Box 1029 Blindern, N-0315 Oslo (Norway)

2013-05-20T23:59:59.000Z

264

The Universe Adventure - Galaxial Motion  

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

Bulk Motions of Galaxies Bulk Motions of Galaxies Galaxy Diagram The Structure of a typical Spiral Galaxy. Galaxies are most often found in clusters and are thus subject to gravitational forces from their neighbors. The relative motion that results from these interactions causes deviations from the cosmological principle called bulk flow. Measuring the peculiar velocities enables cosmologists to calculate the masses of interacting galaxies. Using this technique scientists can estimate the total density of matter in the Universe. During the recombination epoch, the Universe had cooled sufficiently for nucleosynthesis to occur. However, this process produces only a few elements, and looking at the abundance of these elements today is indicative of the rate of nucleosynthesis and the amount of baryonic mass

265

Kinetic equilibrium and relativistic thermodynamics  

E-Print Network (OSTI)

Relativistic thermodynamics is treated from the point of view of kinetic theory. It is shown that the generalized J\\"uttner distribution suggested in [1] is compatible with kinetic equilibrium. The requirement of compatibility of kinetic and thermodynamic equilibrium reveals several generalizations of the Gibbs relation where the velocity field is an independent thermodynamic variable.

Ván, P

2011-01-01T23:59:59.000Z

266

Kinetic equilibrium and relativistic thermodynamics  

E-Print Network (OSTI)

Relativistic thermodynamics is treated from the point of view of kinetic theory. It is shown that the generalized J\\"uttner distribution suggested in [1] is compatible with kinetic equilibrium. The requirement of compatibility of kinetic and thermodynamic equilibrium reveals several generalizations of the Gibbs relation where the velocity field is an independent thermodynamic variable.

P. Ván

2011-02-01T23:59:59.000Z

267

Electric vehicle using the vehicle's kinetic and mechanical power to regenerate it's energy storage device  

SciTech Connect

This patent describes an electrocombustible drive vehicle which consists of: a. motor means for driving the electrocombustible vehicle the motor means being activated by combustible fuel or a pulsating voltage; b. first means for storing electrical energy for use as DC voltage; c. chopper means for providing a pulsating voltage to the motor means for activation of electro portion of the motor means, the first means for storing electrical energy proving DC voltage input to the chopper means; d. means for controlling the quantity of the pulsating voltage supplied to the motor means; e. first generator means for producing electrical voltage, the first generator means mechanical input being connected to the direct output of the motor means independent of the movement of the vehicle allowing the generator to produce a voltage while the vehicle is in the idle position; f. means for charging the first means for storing electrical voltage produced by the generator; g. second means for storing electrical energy for use as a DC voltage; h. second generator means for producing electrical voltage, the second generator means mechanical input being connected to a velocity dependent moving portion of electric vehicle independent of the output of the motor means and dependent on air movement relative to the vehicle, means for selectively charging the first and second means for storing electrical voltage employing the electrical voltage produced by the second generator means; i. means for charging the second means for storing electrical energy employing the electrical voltage produced by the chopper means.

Barnard, R.

1986-07-01T23:59:59.000Z

268

Inflation by purely kinetic coupled gravity  

E-Print Network (OSTI)

We study a purely kinetic coupled scalar-tensor gravity. We use FRW metric and obtain the modified Friedmann equations subject to an effective perfect fluid including energy density $\\rho_{\\phi}=\\rho_{g}+\\rho_{_G}$ and pressure $p_{\\phi}=p_{g}+p_{_G}$, where $(\\rho_{g}, p_{g})$ and $(\\rho_{_G}, p_{_G})$ define the perfect fluids corresponding to the coupling of scalar field dynamics with metric and Einstein tensors, respectively. We find that the inflation can occur in this model provided that $p_{_G}=-\\rho_{_G}$. We define Hubble slow-role parameters and find that the Hubble slow-role regime means $\\rho_{_{g}}\\ll\\rho_{_{G}}$. It turns out that the energy is not conserved for the scalar field and its kinetic energy is growing exponentially during inflation. It is proposed that this energy may be supplied by the quantum fluctuations of vacuum. This rapid transfer of energy density from vacuum to the scalar field may solve the cosmological constant problem. When $\\rho_{_{g}}$ becomes sufficiently large, the Hubble parameter starts decreasing and $\\rho_{_{g}}$ becomes comparable with $\\rho_{_{G}}$, hence the slow-role approximation is violated, and the inflation is ended. The large energy density of the scalar field may be transformed, partly into the matter, and partly into the radiation, and the universe experiences a reheating phase. At late times, the kinetic energy of the scalar field decreases as $a^{-6}$ and the remnant energy density of the scalar field may become a source of dark matter. Also, we study the cosmological perturbations during the inflation and obtain the behaviors of perturbations inside and outside the horizon. These results are in agreement with those obtained in common inflationary scenarios.

F. Darabi; A. Parsiya

2013-12-04T23:59:59.000Z

269

PERIODIC MOTION IN HIGH-SYMMETRIC FLOW Lennaert van Veen  

E-Print Network (OSTI)

is supplied by fixing the smallest wave number components of velocity. The smallest wave number corresponding to a nonzero velocity component is kf = |kf | = 11 and the energy of these fixed components is Ef = 3PERIODIC MOTION IN HIGH-SYMMETRIC FLOW Lennaert van Veen Department of Mechanical Engineering

van Veen, Lennaert

270

Atmospheric Available Energy  

Science Conference Proceedings (OSTI)

The total potential energy of the atmosphere is the sum of its internal and gravitational energies. The portion of this total energy available to be converted into kinetic energy is determined relative to an isothermal, hydrostatic, equilibrium ...

Peter R. Bannon

2012-12-01T23:59:59.000Z

271

Approximate Equations of Motion for Compact Spinning Bodies in General Relativity  

E-Print Network (OSTI)

Approximate equations are derived for the motion of a gyroscope on the earth's gravitational field using the Einstein, Infeld, Hoffmann surface integral method. This method does not require a knowledge of the energy-momentum-stress tensor associated with the gyroscope and uses only its exterior field for its characterization. The resulting equations of motion differ from those of previous derivations.

James L. Anderson

2005-11-16T23:59:59.000Z

272

Advanced Energy Conversion LLC AEC | Open Energy Information  

Open Energy Info (EERE)

Energy Conversion LLC (AEC) Place New York Zip 12020 Product R&D company focused on power electronics, motion control systems and embedded control. References Advanced Energy...

273

Non-Markovian large amplitude motion and nuclear fission  

E-Print Network (OSTI)

The general problem of dissipation in macroscopic large-amplitude collective motion and its relation to energy diffusion of intrinsic degrees of freedom of a nucleus is studied. By applying the cranking approach to the nuclear many body system, a set of coupled dynamical equations for the collective classical variables and the quantum mechanical occupancies of the intrinsic nuclear states is derived. Different dynamical regimes of the intrinsic nuclear motion and its consequences on time properties of collective dissipation are discussed. The approach is applied to the descant of the nucleus from the fission barrier.

V. M. Kolomietz; S. V. Radionov

2008-12-08T23:59:59.000Z

274

MHK Technologies/Ocean | Open Energy Information  

Open Energy Info (EERE)

Ocean Ocean < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Ocean.jpg Technology Profile Primary Organization Hydro Green Energy LLC Project(s) where this technology is utilized *MHK Projects/Alaska 35 *MHK Projects/Maine 1 Project *MHK Projects/Mississippi 6 *MHK Projects/Mississippi 7 *MHK Projects/New York 1 *MHK Projects/New York 2 Technology Resource Click here Current/Tidal Technology Type Click here Cross Flow Turbine Technology Readiness Level Click here TRL 4: Proof of Concept Technology Description Hydro Green Energy's HydroKinetic Turbine Arrays operate differently than a traditional hydropower plant. Like a traditional hydropower station, the electricity that we produce is clean and renewable, however, there are significant differences. Hydro Green Energy's Krouse Turbines are kinetic turbines. This means that the renewable power that is generated comes from the energy in the "motion" of the moving water, i.e. the velocity of the moving water be it river, tidal or ocean current to generate river, tidal energy or ocean energy, respectively.

275

Development of Novel Density Functionals for Thermochemical Kinetics  

E-Print Network (OSTI)

A new density functional theory (DFT) exchange-correlation functional for the exploration of reaction mechanisms is proposed. This new functional, denoted BMK (Boese-Martin for Kinetics), has an accuracy in the 2 kcal/mol range for transition state barriers but, unlike previous attempts at such a functional, this improved accuracy does not come at the expense of equilibrium properties. This makes it a general-purpose functional whose domain of applicability has been extended to transition states, rather than a specialized functional for kinetics. The improvement in BMK rests on the inclusion of the kinetic energy density together with a large value of the exact exchange mixing coefficient. For this functional, the kinetic energy density appears to correct `back' the excess exact exchange mixing for ground-state properties, possibly simulating variable exchange.

Boese, A D; Martin, Jan M. L.

2004-01-01T23:59:59.000Z

276

Energy flux fluctuations in a finite volume of turbulent flow  

E-Print Network (OSTI)

The flux of turbulent kinetic energy from large to small spatial scales is measured in a small domain B of varying size R. The probability distribution function of the flux is obtained using a time-local version of Kolmogorov's four-fifths law. The measurements, made at a moderate Reynolds number, show frequent events where the flux is backscattered from small to large scales, their frequency increasing as R is decreased. The observations are corroborated by a numerical simulation based on the motion of many particles and on an explicit form of the eddy damping.

Mahesh Bandi; Walter Goldburg; John Cressman Jr.; Alain Pumir

2006-07-19T23:59:59.000Z

277

Page not found | Department of Energy  

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

81 - 5790 of 26,764 results. 81 - 5790 of 26,764 results. Download Lessons Learned Quarterly Report, June 2004 Welcome to the 39th quarterly report on lessons learned in the NEPA process. In this issue we are continuing a multi-part examination of lessons learned from Lessons Learned. http://energy.gov/nepa/downloads/lessons-learned-quarterly-report-june-2004 Download TBZ-0104 In the Matter of Hansford F. Johnson This Decision will consider a Motion to Dismiss filed by B&W Pantex LLC (B&W), the Management and Operating Contractor for the Department of Energy's (DOE) Pantex Plant (Pantex), in... http://energy.gov/oha/downloads/tbz-0104-matter-hansford-f-johnson Download CX-009578: Categorical Exclusion Determination Advancement of the Kinetic Hydropower System (KHPS) to DOE TRL 7/8

278

Diagnosing Forecast Errors in Tropical Cyclone Motion  

Science Conference Proceedings (OSTI)

This paper reports on the development of a diagnostic approach that can be used to examine the sources of numerical model forecast error that contribute to degraded tropical cyclone (TC) motion forecasts. Tropical cyclone motion forecasts depend ...

Thomas J. Galarneau Jr.; Christopher A. Davis

2013-02-01T23:59:59.000Z

279

Solid state engine with alternating motion  

DOE Patents (OSTI)

Heat energy is converted to mechanical motion utilizing apparatus including a cylinder, a piston having openings therein reciprocable in the cylinder, inlet and outlet ports for warm water at one end of the cylinder, inlet and outlet ports for cool water at the other end of the cylinder, gates movable with the piston and slidably engaging the cylinder wall to alternately open and close the warm and cool water ports, a spring bearing against the warm water side of the piston and a double helix of a thermal shape memory material attached to the cool end of the cylinder and to the piston. The piston is caused to reciprocate by alternately admitting cool water and warm water to the cylinder.

Golestaneh, A.A.

1980-01-21T23:59:59.000Z

280

Simulations of kinetic events at the atomic scale Graeme Henkelman  

E-Print Network (OSTI)

Simulations of kinetic events at the atomic scale Graeme Henkelman UT Austin Al / Al(100) B3I / Si Need to find saddle points on the energy surface Rate of escape through each saddle point region: E (KMC): 1. Find low energy saddle points using a min-mode method. 2. Choose one processes from

Note: This page contains sample records for the topic "motion kinetic energy" 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

Kinetics of coal pyrolysis  

Science Conference Proceedings (OSTI)

This report contains results of a coordinated, multi-laboratory investigation of coal devolatilization. Data is reported pertaining to the devolatilization for bituminous coals over three orders of magnitude in apparent heating rate (100 to 100,000 + {degree}C/sec), over two orders of magnitude in particle size (20 to 700 microns), final particle temperatures from 400 to 1600{degree}C, heat transfer modes ranging from convection to radiative, ambient pressure ranging from near vacuum to one atmosphere pressure. The heat transfer characteristics of the reactors are reported in detail. It is assumed the experimental results are to form the basis of a devolatilization data base. Empirical rate expressions are developed for each phase of devolatilization which, when coupled to an awareness of the heat transfer rate potential of a particular devolatilization reactor, indicate the kinetics emphasized by a particular system reactor plus coal sample. The analysis indicates the particular phase of devolatilization that will be emphasized by a particular reactor type and, thereby, the kinetic expressions appropriate to that devolatilization system. Engineering rate expressions are developed from the empirical rate expressions in the context of a fundamental understanding of coal devolatilization developed in the course of the investigation. 164 refs., 223 figs., 44 tabs.

Seery, D.J.; Freihaut, J.D.; Proscia, W.M. (United Technologies Research Center, East Hartford, CT (USA)); Howard, J.B.; Peters, W.; Hsu, J.; Hajaligol, M.; Sarofim, A. (Massachusetts Inst. of Tech., Cambridge, MA (USA)); Jenkins, R.; Mallin, J.; Espindola-Merin, B. (Pennsylvania State Univ., University Park, PA (USA)); Essenhigh, R.; Misra, M.K. (Ohio State Univ., Columbus, OH (USA))

1989-07-01T23:59:59.000Z

282

Kinetics of Silica Polymerization  

E-Print Network (OSTI)

All toge tion and energy conversion system design strategiesthe overall energy extraction and conversion system must beenergy conversion process may be tailored to reduce or eliminate The benefits of a binary system

Weres, Oleh

2011-01-01T23:59:59.000Z

283

Nonequilibrium free energy, H theorem and self-sustained oscillations for Boltzmann-BGK descriptions of semiconductor superlattices  

E-Print Network (OSTI)

Semiconductor superlattices (SL) may be described by a Boltzmann-Poisson kinetic equation with a Bhatnagar-Gross-Krook (BGK) collision term which preserves charge, but not momentum or energy. Under appropriate boundary and voltage bias conditions, these equations exhibit time-periodic oscillations of the current caused by repeated nucleation and motion of charge dipole waves. Despite this clear nonequilibrium behavior, if we `close' the system by attaching insulated contacts to the superlattice and keeping its voltage bias to zero volts, we can prove the H theorem, namely that a free energy $\\Phi(t)$ of the kinetic equations is a Lyapunov functional ($\\Phi\\geq 0$, $d\\Phi/dt\\leq 0$). Numerical simulations confirm that the free energy decays to its equilibrium value for a closed SL, whereas for an `open' SL under appropriate dc voltage bias and contact conductivity $\\Phi(t)$ oscillates in time with the same frequency as the current self-sustained oscillations.

M Alvaro; L L Bonilla

2010-11-12T23:59:59.000Z

284

Recent ground motion studies at Fermilab  

SciTech Connect

Understanding slow and fast ground motion is important for the successful operation and design for present and future colliders. Since 2000 there have been several studies of ground motion at Fermilab. Several different types of HLS (hydro static level sensors) have been used to study slow ground motion (less than 1 hertz) seismometers have been used for fast (greater than 1 hertz) motions. Data have been taken at the surface and at locations 100 meters below the surface. Data of recent slow ground motion measurements with HLSs, many years of alignment data and results of the ATL-analysis are presented and discussed.

Shiltsev, V.; Volk, J.; /Fermilab; Singatulin, S.; /Novosibirsk, IYF

2009-04-01T23:59:59.000Z

285

Mesoscale Energy Spectra of Moist Baroclinic Waves  

Science Conference Proceedings (OSTI)

The role of moist processes in the development of the mesoscale kinetic energy spectrum is investigated with numerical simulations of idealized moist baroclinic waves. Dry baroclinic waves yield upper-tropospheric kinetic energy spectra that ...

Michael L. Waite; Chris Snyder

2013-04-01T23:59:59.000Z

286

5, 86898714, 2005 The Kinetic  

E-Print Network (OSTI)

Technical Note: Simulating chemical systems in Fortran90 and Matlab with the Kinetic PreProcessor KPP-2.1 A estimation techniques, and variational chemical data assimilation applications require the development of ef- ficient tools for the computational simulation of chemical kinetics systems. From a numerical point

Paris-Sud XI, Université de

287

Nonlinear effects in kinetic resolutions  

E-Print Network (OSTI)

The impact of nonlinear effects in the asymmetric catalysis of kinetic resolutions is analyzed. It is found with minimal assumptions that the kinetics of homocompetitive reactions should apply generally to kinetic resolutions involving partially resolved catalysts, and this is supported by experimental observations with the Jacobsen hydrolytic kinetic resolution (HKR) of epoxides. The criterion for a nonlinear effect in asymmetric catalysis--a nonlinear correlation between the enantiomeric excess in a choral ligand and the product enantiomeric excess obtained from a reaction--is examined. The nonlinear effect idea is found to be generalizable to kinetic resolutions and other reactions by replacing consideration of the product enantiomeric excess with the quantity (k[]/k[]-1)/(k[]/k[]+1), a differential kinetic enantiomeric enhancement (DKEE). A nonlinear effect may then be defined by a nonlinear correlation between the DKEE and the chiral ligand enantiomeric excess. The application of these ideas to previously reported kinetic resolutions of sulfoxides and to nonlinear effects in the Jacobsen HKR is described. Relatively small nonlinear effects in kinetic resolutions are sufficient to obtain large asymmetric amplifications. A catalyst modification in the Jacobsen HKR also allows for the development of a novel recyclable system for the iterative enhancement of optical activity.

Johnson, Derrell W.

1999-01-01T23:59:59.000Z

288

Ducted kinetic Alfven waves in plasma with steep density gradients  

SciTech Connect

Given their high plasma density (n {approx} 10{sup 13} cm{sup -3}), it is theoretically possible to excite Alfven waves in a conventional, moderate length (L {approx} 2 m) helicon plasma source. However, helicon plasmas are decidedly inhomogeneous, having a steep radial density gradient, and typically have a significant background neutral pressure. The inhomogeneity introduces regions of kinetic and inertial Alfven wave propagation. Ion-neutral and electron-neutral collisions alter the Alfven wave dispersion characteristics. Here, we present the measurements of propagating kinetic Alfven waves in helium helicon plasma. The measured wave dispersion is well fit with a kinetic model that includes the effects of ion-neutral damping and that assumes the high density plasma core defines the radial extent of the wave propagation region. The measured wave amplitude versus plasma radius is consistent with the pile up of wave magnetic energy at the boundary between the kinetic and inertial regime regions.

Houshmandyar, Saeid [Solar Observatory Department, Prairie View A and M University, Prairie View, Texas 77446 (United States); Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315 (United States); Scime, Earl E. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315 (United States)

2011-11-15T23:59:59.000Z

289

Enhancement of vortex induced forces and motion through surface roughness control  

SciTech Connect

Roughness is added to the surface of a bluff body in a relative motion with respect to a fluid. The amount, size, and distribution of roughness on the body surface is controlled passively or actively to modify the flow around the body and subsequently the Vortex Induced Forces and Motion (VIFM). The added roughness, when designed and implemented appropriately, affects in a predetermined way the boundary layer, the separation of the boundary layer, the level of turbulence, the wake, the drag and lift forces, and consequently the Vortex Induced Motion (VIM), and the fluid-structure interaction. The goal of surface roughness control is to increase Vortex Induced Forces and Motion. Enhancement is needed in such applications as harnessing of clean and renewable energy from ocean/river currents using the ocean energy converter VIVACE (Vortex Induced Vibration for Aquatic Clean Energy).

Bernitsas, Michael M. (Saline, MI); Raghavan, Kamaldev (Houston, TX)

2011-11-01T23:59:59.000Z

290

Rhodopsin kinetics in the cat retina  

SciTech Connect

The bleaching and regeneration of rhodopsin in the living cat retina was studied by means of fundus reflectometry. Bleaching was effected by continuous light exposures of 1 min or 20 min, and the changes in retinal absorbance were measured at 29 wavelengths. For all of the conditions studied (fractional bleaches of from 65 to 100%), the regeneration of rhodopsin to its prebleach levels required greater than 60 min in darkness. After the 1-min exposures, the difference spectra recorded during the first 10 min of dark adaptation were dominated by photoproduct absorption, and rhodopsin regeneration kinetics were obscured by these intermediate processes. Extending the bleaching duration to 20 min gave the products of photolysis an opportunity to dissipate, and it was possible to follow the regenerative process over its full time-course. It was not possible, however, to fit these data with the simple exponential function predicted by first-order reaction kinetics. Other possible mechanisms were considered and are presented in the text. Nevertheless, the kinetics of regeneration compared favorably with the temporal changes in log sensitivity determined electrophysiologically by other investigators. Based on the bleaching curve for cat rhodopsin, the photosensitivity was determined and found to approximate closely the value obtained for human rhodopsin; i.e., the energy Ec required to bleach 1-e-1 of the available rhodopsin was 7.09 log scotopic troland-seconds (corrected for the optics of the cat eye), as compared with approximately 7.0 in man.

Ripps, H.; Mehaffey, L.; Siegel, I.M.

1981-03-01T23:59:59.000Z

291

Turbulent Kinetic Energy Dissipation in Barrow Canyon  

Science Conference Proceedings (OSTI)

Pacific Water flows across the shallow Chukchi Sea before reaching the Arctic Ocean, where it is a source of heat, freshwater, nutrients, and carbon. A substantial portion of Pacific Water is routed through Barrow Canyon, located in the northeast ...

E. L. Shroyer

2012-06-01T23:59:59.000Z

292

Turbulent Kinetic Energy Budgets over Mountainous Terrain  

Science Conference Proceedings (OSTI)

The objective of this study is to describe the characteristics of the airflow and turbulence structure over mountainous terrain. Turbulent characteristics of the airflow were measured using well-instrumented aircraft. The shear, buoyancy, ...

Theodore S. Karacostas; John D. Marwitz

1980-02-01T23:59:59.000Z

293

Piezoelectric kinetic energy-harvesting ics .  

E-Print Network (OSTI)

??Wireless micro-sensors can enjoy popularity in biomedical drug-delivery treatments and tire-pressure monitoring systems because they offer in-situ, real-time, non-intrusive processing capabilities. However, miniaturized platforms severely… (more)

Kwon, Dongwon

2013-01-01T23:59:59.000Z

294

Systematic examination of dynamically driven organic reactions via kinetic isotope effects  

E-Print Network (OSTI)

Organic reactions are systematically examined experimentally and theoretically to determine the role dynamics plays in the outcome of the reaction. It is shown that trajectory studies are of vital importance in understanding reactions influenced by dynamical motion. This dissertation discusses how a combination of kinetic isotope effects, theoretical calculations, and quasiclassical dynamics trajectories aid in the understanding of the solvolysis of p-tolyldiazonium cation in water, the cycloadditions of cyclopentadiene with diphenylketene and dichloroketene, and the cycloaddition of 2- methyl-2-butene with dichloroketene. In the solvolysis of p-tolyldiazonium cation, significant 13C kinetic isotope effects are qualitatively consistent with a transition state leading to formation of an aryl cation, but on a quantitative basis, the isotope effects are not adequately accounted for by simple SN1 heterolysis to the aryl cation. The best predictions of the 13C isotope effects for the heterolytic process arise from transition structures solvated by clusters of water molecules. Dynamic trajectories starting from these transition structures afford products very slowly. The nucleophilic displacement process for aryldiazonium ions in water is determined to be at the boundary of the SN2Ar and SN1 mechanisms. The reaction of cyclopentadiene with diphenylketene affords both [4 + 2] and [2 + 2] cycloadducts directly. This is surprising. There is only one low-energy transition structure for adduct formation. Investigation of this reaction indicates that quasiclassical trajectories started from a single transition structure afford both [4 + 2] and [2 + 2] products. Overall, an understanding of the products, rates, selectivities, isotope effects, and mechanism in these reactions requires the explicit consideration of dynamic trajectories.

Ussing, Bryson Richard

2006-12-01T23:59:59.000Z

295

Theory of atomic motion in resonant radiation  

SciTech Connect

Atomic motion in resonant and near resonant electromagnetic radiation is investigated theoretically. The exposition begins with a study of atomic motion in a resonant standing light wave, with a view toward isotope separation by selective photodeflection, and proceeds to the investigation of more general problems of atomic motion in resonant radiation. The body of the work consists of six chapters, each of which was prepared as a manuscript for publication in the open literature.

Cook, R.J.

1980-03-01T23:59:59.000Z

296

General techniques for constrained motion planning  

SciTech Connect

This report presents automatic motion planning algorithms for robotic manipulators performing a variety of tasks. Given a task and a robot manipulator equipped with a tool in its hand, the motion planners compute robot motions to complete the task while respecting manipulator kinematic constraints and avoiding collisions with objects in the robot`s work space. To handle the high complexity of the motion planning problem, a sophisticated search strategy called SANDROS is developed and used to solve many variations of the motion planning problem. To facilitate systematic development of motion planning algorithms, robotic tasks are classified into three categories according to the dimension of the manifold the robot tool has to travel: visit-point (0 dimensional), trace-curve (1 dimensional) and cover-surface (2 dimensional) tasks. The motion planner for a particular dimension is used as a sub-module by the motion planner for the next-higher dimension. This hierarchy of motion planners has led to a set of compact and systematic algorithms that can plan robot motions for many types of robotic operations. In addition, an algorithm is developed that determines the optimal robot-base configuration for minimum cycle time. The SANDROS search paradigm is complete in that it finds a solution path if one exists, up to a user specified resolution. Although its worst-case time complexity is exponential in the degrees of freedom of the manipulator, its average performance is commensurate with the complexity of the solution path. Since solution paths for most of motion planning problems consist of a few monotone segments, the motion planners based on SANDROS search strategy show approximately two-orders of magnitude improvements over existing complete algorithms.

Hwang, Yong K.; Watterberg, P.A.; Chen, Pang, C.; Lewis, C.L.

1997-02-01T23:59:59.000Z

297

SPECTRUM OF KINETIC-ALFVEN TURBULENCE  

Science Conference Proceedings (OSTI)

A numerical study of strong kinetic-Alfven turbulence at scales smaller than the ion gyroscale is presented, and a phenomenological model is proposed that argues that magnetic and density fluctuations are concentrated mostly in two-dimensional structures, which leads to their Fourier energy spectra E(k ){proportional_to}k {sup -8/3} , where k is the wavevector component normal to the strong background magnetic field. The results may provide an explanation for recent observations of magnetic and density fluctuations in the solar wind at sub-proton scales.

Boldyrev, Stanislav; Perez, Jean Carlos [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States)

2012-10-20T23:59:59.000Z

298

Method for motion tracking during tomographic scanning  

Method for motion tracking during tomographic scanning Note: The technology described above is an early stage opportunity. Licensing rights to this intellectual ...

299

Selecting and Scaling Earthquake Ground Motions for ...  

Science Conference Proceedings (OSTI)

... a) near-fault FD pulse motion with PPV and NCSV shown (Imperial Valley 1979, El ... typically 3 or more) such that, in aggregate, valleys of individual ...

2012-02-16T23:59:59.000Z

300

VIDEOS: Slow motion video of Charpy impact  

Science Conference Proceedings (OSTI)

Sep 25, 2007 ... This slow motion video of an actual Charpy impact test shows the sample fracturing. The VIMS web resource offers a detailed description of an ...

Note: This page contains sample records for the topic "motion kinetic energy" 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

Lost-motion valve actuator  

SciTech Connect

A lost-motion valve actuator is described for a bore closure valve employed in a well bore, comprising: operating connector means adapted to move the bore closure valve between open and closed positions through longitudinal movement of the operating connector means. The operating connector means comprises an operating connector and a connector insert defining a recess therebetween; locking dog means comprising at least one locking dog received in the recess and spring biasing means adapted to urge at least one locking dog radially inwardly; and mandrel means slidably received within the operating connector means and including dog slot means associated therewith. The dog slot means comprises an annular slot on the exterior of the mandrel means adapted to lockingly receive at least one inwardly biased locking dog when proximate thereto, whereby longitudinal movement of the mandrel means is transmitted to the operating connector means.

Burris, W.J. III; Ringgenberg, P.D.

1987-04-07T23:59:59.000Z

302

Phase-field Model for Interstitial Loop Growth Kinetics and Thermodynamic and Kinetic Models of Irradiated Fe-Cr Alloys  

Science Conference Proceedings (OSTI)

Microstructure evolution kinetics in irradiated materials has strongly spatial correlation. For example, void and second phases prefer to nucleate and grow at pre-existing defects such as dislocations, grain boundaries, and cracks. Inhomogeneous microstructure evolution results in inhomogeneity of microstructure and thermo-mechanical properties. Therefore, the simulation capability for predicting three dimensional (3-D) microstructure evolution kinetics and its subsequent impact on material properties and performance is crucial for scientific design of advanced nuclear materials and optimal operation conditions in order to reduce uncertainty in operational and safety margins. Very recently the meso-scale phase-field (PF) method has been used to predict gas bubble evolution, void swelling, void lattice formation and void migration in irradiated materials,. Although most results of phase-field simulations are qualitative due to the lake of accurate thermodynamic and kinetic properties of defects, possible missing of important kinetic properties and processes, and the capability of current codes and computers for large time and length scale modeling, the simulations demonstrate that PF method is a promising simulation tool for predicting 3-D heterogeneous microstructure and property evolution, and providing microstructure evolution kinetics for higher scale level simulations of microstructure and property evolution such as mean field methods. This report consists of two parts. In part I, we will present a new phase-field model for predicting interstitial loop growth kinetics in irradiated materials. The effect of defect (vacancy/interstitial) generation, diffusion and recombination, sink strength, long-range elastic interaction, inhomogeneous and anisotropic mobility on microstructure evolution kinetics is taken into account in the model. The model is used to study the effect of elastic interaction on interstitial loop growth kinetics, the interstitial flux, and sink strength of interstitial loop for interstitials. In part II, we present a generic phase field model and discuss the thermodynamic and kinetic properties in phase-field models including the reaction kinetics of radiation defects and local free energy of irradiated materials. In particular, a two-sublattice thermodynamic model is suggested to describe the local free energy of alloys with irradiated defects. Fe-Cr alloy is taken as an example to explain the required thermodynamic and kinetic properties for quantitative phase-field modeling. Finally the great challenges in phase-field modeling will be discussed.

Li, Yulan; Hu, Shenyang Y.; Sun, Xin; Khaleel, Mohammad A.

2011-06-15T23:59:59.000Z

303

Metal reduction kinetics in Shewanella  

Science Conference Proceedings (OSTI)

Motivation: Metal reduction kinetics have been studied in cultures of dissimilatory metal reducing bacteria which include the Shewanella oneidensis strain MR-1. Estimation of system parameters from time-series data faces obstructions in ...

Raman Lall; Julie Mitchell

2007-09-01T23:59:59.000Z

304

An energy management framework for energy harvesting embedded systems  

Science Conference Proceedings (OSTI)

Energy harvesting (also known as energy scavenging) is the process of generating electrical energy from environmental energy sources. There exists a variety of different energy sources such as solar energy, kinetic energy, or thermal energy. In recent ... Keywords: Power management, embedded systems, energy harvesting, model predictive control, real-time scheduling, reward maximization

Clemens Moser; Jian-Jia Chen; Lothar Thiele

2010-06-01T23:59:59.000Z

305

Improving the Quality of Non-Holonomic Motion by Hybridizing C-PRM Paths  

E-Print Network (OSTI)

Sampling-based motion planners are an effective means for generating collision-free motion paths. However, the quality of these motion paths, with respect to different quality measures such as path length, clearance, smoothness or energy, is often notoriously low. This problem is accentuated in the case of non-holonomic sampling-based motion planning, in which the space of feasible motion trajectories is restricted. In this study, we combine the C-PRM algorithm by Song and Amato with our recently introduced path-hybridization approach, for creating high quality non-holonomic motion paths, with combinations of several different quality measures such as path length, smoothness or clearance, as well as the number of reverse car motions. Our implementation includes a variety of code optimizations that result in nearly real-time performance, and which we believe can be extended with further optimizations to a real-time tool for the planning of high-quality car-like motion.

Berger, Itamar; Zohar, Gal; Raveh, Barak; Halperin, Dan

2010-01-01T23:59:59.000Z

306

Theoretical Studies in Chemical Kinetics  

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

Theoretical Studies in Chemical Kinetics ^ ^ iCi| Theoretical Studies in Chemical Kinetics ^ ^ iCi| under AEC Contract A T (30-1)-3780 " â–  ' Annual Report (1970) Principal In-vestigator: Martin Karpins Institution: Harvard University The research performed under this contract can best be sunmarized under several headings. (a) Alkali-Halideg Alkali-Halide (MX^ M*X*) Exchange Reactions. This project is being continued. A careful study of certain

307

MHK Technologies/HydroGen 10 | Open Energy Information  

Open Energy Info (EERE)

HydroGen 10 HydroGen 10 < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage HydroGen 10.jpg Technology Profile Primary Organization HydroGen Aquaphile sarl Project(s) where this technology is utilized *MHK Projects/Hydro Gen Technology Resource Click here Current/Tidal Technology Type Click here Oscillating Wave Surge Converter Technology Readiness Level Click here TRL 7/8: Open Water System Testing & Demonstration & Operation Technology Description Hydro Gen is a big floating paddle wheels turbine included in a catamaran frame venturi shaped The frame is optimized to allow tapping a maximum of water in move in order to capture a maximum of kinetic energy which is transformed in mechanical energy by the wheel motion and then transformed into electrical energy through a generator mechanically driven by the wheel And then finally changed by a power control station to a steady electrical current normed at the customer request

308

Computer simulations of the motion and decay of global strings  

Science Conference Proceedings (OSTI)

Computer simulations have been carried out of the motion and decay of global strings, including spectrum analysis of the energy stored in the scalar field which describes the global string and the radiated Nambu-Goldstone bosons. We simulated relaxing pieces of bent string and collapsing loops. We find, for the string sizes investigated, that the spectrum of field energy hardens rather than softens while the string decays into Nambu-Goldstone radiation. We argue on theoretical grounds that is indeed the most plausible general behaviour. 19 refs., 12 figs.

Hagmann, C.; Sikivie, P.

1990-01-01T23:59:59.000Z

309

Method and an apparatus to control the lateral motion of a long metal bar being formed by a mechanical process such as rolling or drawing  

DOE Patents (OSTI)

An adjustable guide, includes two or more mechanisms each having a rotatable retaining element containing a retaining groove with a variable radius in its perimeter surface. The grooves form a guidance path to control the lateral, i.e. non-axial, motion of a long bar moving along a longitudinal axis during a production process.The diameter of the guidance path varies according to the variable radii of the grooves. The guidance path increases in size at a predetermined rate, from a point of origin to an end point on the retaining groove. Rotating the retaining elements causes the diameter of the retaining grooves to change so that the size of the guidance path can be changed to match the diameter of the bar being rolled, size of the guidance path can be changed to fit the diameter of a new bar rolled without having to exchange the guide for a different sized guide, reduce fiction between the bar and the guide, a media, such as compressed air, can be injected between the retaining elements via orifices.Each retaining element is attached to a mounting apparatus. The mounting apparatus can be fixed or flexible. The flexible mounting apparatus includes one or more springs and one or more shock absorbers. A force neutral position of the flexible mounting apparatus is designed to be located on the predetermined ideal bar path line. The flexible mounting apparatus dissipates kinetic energy from the bar thereby reducing the bar's lateral motion relative to the ideal bar path line.The damping ratio of the mounting apparatus can be adjustable to alter the product's vibration mode to enable better control of the bar's lateral motion.

Chang, Tzyy-Shuh (Ann Arbor, MI); Huang, Hsun-Hau (Ann Arbor, MI); Lin, Chang-Hung (Ann Arbor, MI)

2007-10-02T23:59:59.000Z

310

Engineering model reduction of bio-chemical kinetic David Csercsik, Katalin M. Hangos  

E-Print Network (OSTI)

of Hydrosystems Chemical and Thermal Non-Equilibrium: Kinetic Mass & Energy Transfer Motivation Modeling Non is actually driven by difference in chemical potential influence of thermal non-equilibrium on kinetic mass situation of clear non-equilibrium extending range of applicability Support of the German Research

Gorban, Alexander N.

311

Motion for Leave to File Consolidated Answer and Consolidated Answer of  

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

File Consolidated Answer and Consolidated File Consolidated Answer and Consolidated Answer of Robert G. Burnley, Director of the Commenwealth of Virginia Department of Environmental Quality Motion for Leave to File Consolidated Answer and Consolidated Answer of Robert G. Burnley, Director of the Commenwealth of Virginia Department of Environmental Quality Docket No. EO-05-01. Motion for Leave to File Consolidated Answer and Consolidated Answer of Robert G. Burnley, Director ofthe Commonwealth of Virginia Department of Environmental Quality, filed in Federal Energy Regulatory Commission ("FERC") Docket No. ELOS-14S. The Director's motion specifically references and otherwise relates to Department of Energy Docket No. EO-OS-01. Motion for Leave to File Consolidated Answer and Consolidated Answer of

312

Approximate Integrals of rf-driven Particle Motion in Magnetic Field  

DOE Green Energy (OSTI)

For a particle moving in nonuniform magnetic field under the action of an rf wave, ponderomotive effects result from rf-driven oscillations nonlinearly coupled with Larmor rotation. Using Lagrangian and Hamiltonian formalism, we show how, despite this coupling, two independent integrals of the particle motion are approximately conserved. Those are the magnetic moment of free Larmor rotation and the quasi-energy of the guiding center motion parallel to the magnetic field. Under the assumption of non-resonant interaction of the particle with the rf field, these integrals represent adiabatic invariants of the particle motion.

I.Y. Dodin; N.J. Fisch

2004-04-26T23:59:59.000Z

313

A Methodology for Finding Invariants of Motion for Asymmetric Systems with Gauge-Transformed Umbra Lagrangian Generated by Bond Graphs  

Science Conference Proceedings (OSTI)

The purpose of this article is to obtain conservation laws (invariants of motion) for different energy domains through the extended Noether theorem and bond graphs. Bond graphs are profitably used in representing the physics of a system as well as obtaining ... Keywords: Bond graphs, Noether's theorem, gauge-transformed umbra-Lagrangian, invariants of motion, umbra-Lagrangian

Amalendu Mukherjee; Vikas Rastogi; Anirvan Dasgupta

2006-04-01T23:59:59.000Z

314

Optimization-based interactive motion synthesis  

Science Conference Proceedings (OSTI)

We present a physics-based approach to synthesizing motion of a virtual character in a dynamically varying environment. Our approach views the motion of a responsive virtual character as a sequence of solutions to the constrained optimization problem ... Keywords: Character animation, nonlinear optimization, physics-based animation

Sumit Jain; Yuting Ye; C. Karen Liu

2009-01-01T23:59:59.000Z

315

Black Hole Motion as Catalyst of Orbital Resonances  

E-Print Network (OSTI)

The motion of a black hole about the centre of gravity of its host galaxy induces a strong response from the surrounding stellar population. We treat the case of a harmonic potential analytically and show that half of the stars on circular orbits in that potential shift to an orbit of lower energy, while the other half receive a positive boost and recede to a larger radius. The black hole itself remains on an orbit of fixed amplitude and merely acts as a catalyst for the evolution of the stellar energy distribution function f(E). We show that this effect is operative out to a radius of approx 3 to 4 times the hole's influence radius, R_bh. We use numerical integration to explore more fully the response of a stellar distribution to black hole motion. We consider orbits in a logarithmic potential and compare the response of stars on circular orbits, to the situation of a `warm' and `hot' (isotropic) stellar velocity field. While features seen in density maps are now wiped out, the kinematic signature of black hole motion still imprints the stellar line-of-sight mean velocity to a magnitude ~18% the local root mean-square velocity dispersion sigma.

C. M. Boily; T. Padmanabhan; A. Paiement

2007-05-18T23:59:59.000Z

316

Intrinsic Motions Along an Enzymatic Reaction Trajectory  

SciTech Connect

The mechanisms by which enzymes achieve extraordinary rate acceleration and specificity have long been of key interest in biochemistry. It is generally recognized that substrate binding coupled to conformational changes of the substrate-enzyme complex aligns the reactive groups in an optimal environment for efficient chemistry. Although chemical mechanisms have been elucidated for many enzymes, the question of how enzymes achieve the catalytically competent state has only recently become approachable by experiment and computation. Here we show crystallographic evidence for conformational substates along the trajectory towards the catalytically competent 'closed' state in the ligand-free form of the enzyme adenylate kinase. Molecular dynamics simulations indicate that these partially closed conformations are sampled in nanoseconds, whereas nuclear magnetic resonance and single-molecule fluorescence resonance energy transfer reveal rare sampling of a fully closed conformation occurring on the microsecond-to-millisecond timescale. Thus, the larger-scale motions in substrate-free adenylate kinase are not random, but preferentially follow the pathways that create the configuration capable of proficient chemistry. Such preferred directionality, encoded in the fold, may contribute to catalysis in many enzymes.

Henzler-Wildman,K.; Thai, V.; Lei, M.; Ott, M.; Wolf-Watz, M.; Fenn, T.; Pozharski, E.; Wilson, M.; Petsko, G.; et al

2007-01-01T23:59:59.000Z

317

Image Registration Using Wavelet-Based Motion Model  

Science Conference Proceedings (OSTI)

An image registration algorithm is developed to estimate dense motion vectors between two images using the coarse-to-fine wavelet-based motion model. This motion model is described by a linear combination of hierarchical basis functions proposed by Cai ... Keywords: Cai-Wang wavelet, coarse-to-fine motion pyramid, image registration, sum squared difference (SSD), warping, wavelet-based motion model

Yu-Te Wu; Takeo Kanade; Ching-Chung Li; Jeffrey Cohn

2000-07-01T23:59:59.000Z

318

Convective cell generation by kinetic Alfven wave turbulence in the auroral ionosphere  

Science Conference Proceedings (OSTI)

Modulation of convective cells by kinetic Alfven wave (KAW) turbulence is investigated. The interaction is governed by a nonlinear dispersion relation for the convective cells. It is shown that KAW turbulence is disrupted by excitation of the large-scale convective motion through a resonant instability. Application of the results to the auroral ionosphere shows that cross-scale coupling of the KAW turbulence and convective cells plays an important role in the evolution of ionospheric plasma turbulence.

Zhao, J. S.; Wu, D. J. [Purple Mountain Observatory, Chinese Academy of Sciences 210008, Nanjing (China); Yu, M. Y. [Department of Physics, Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China); Institute for Theoretical Physics I, Ruhr University, D-44780 Bochum (Germany); Lu, J. Y. [National Center for Space Weather, China Meteorology Administration 100081, Beijing (China)

2012-06-15T23:59:59.000Z

319

Methods for predicting rubble motion during blasting  

SciTech Connect

Recent applications of explosives and blasting agents to rubble rock have led to requirements for more elaborate design and analysis methods. Many in situ extraction techniques require rubblization to take place in a confined region where rock motion is a predominate factor in creating a permeable broken bed. Two analytical methods are presented which describe the large rubble motion during blasting. These methods are intended to provide the blast designer with a tool for evaluation and further refinement of blasting patterns and timing sequences. In both these methods, the rock medium is represented by a series of discrete, discontinuous regions (bodies, masses). The use of discontinuous techniques rather than the classical continuum methods, results in better approximations to the rubble motion. These regions are set in motion by pressure loads from the explosive. The motion of these regions is then calculated numerically using interaction laws between regions in contact. The basis for these models or methods is presented along with the background for selecting explosive pressure loads and rock mass material behavior. Typical examples, including both cratering and bench blasting geometries, are discussed which illustrate the use of these models to predict rubble motion. Such engineering representations appear to provide a practical method for use in predicting rubble motion and a tool for design evaluation of blasting in confined geometries.

Schamaun, J.T.

1984-03-01T23:59:59.000Z

320

An Experimental Study of the Role of Plasticity in the Rafting Kinetics ...  

Science Conference Proceedings (OSTI)

This is consistent with the symmetry of the corresponding Fourier transform. ... components of the scattering vector k, perpendicular to, .... enhanced kinetics due to the supply of fast diffusion paths ... the total strain energy of the single crystal is.

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321

Ultra-wideband radar motion sensor  

DOE Patents (OSTI)

A motion sensor is based on ultra-wideband (UWB) radar. UWB radar range is determined by a pulse-echo interval. For motion detection, the sensors operate by staring at a fixed range and then sensing any change in the averaged radar reflectivity at that range. A sampling gate is opened at a fixed delay after the emission of a transmit pulse. The resultant sampling gate output is averaged over repeated pulses. Changes in the averaged sampling gate output represent changes in the radar reflectivity at a particular range, and thus motion. 15 figs.

McEwan, T.E.

1994-11-01T23:59:59.000Z

322

The World Renewable Energy Forum in Denver | Department of Energy  

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

Energy Department Four Years of Leadership with Secretary Chu The Technology Showcase: AC Kinetics ARPA-E 2013 SLIDESHOW: Shepherds Flat Wind Farm 2013 Washington Auto Show An...

323

TEST & MOTION SIMULATION SYSTEMSSERVOTEST Tailored Solutions For Your Servohydraulic  

E-Print Network (OSTI)

TEST & MOTION SIMULATION SYSTEMSSERVOTEST SERVOTEST ACTUATORS Tailored Solutions For Your Servohydraulic Test And Motion Simulation System Requirements #12;TEST & MOTION SIMULATION SYSTEMSSERVOTEST qualified engineers · Founded in 1958 as a Consultancy to service the growing test market · International

324

Pixel-wise Motion Detection in Persistent Aerial Video Surveillance  

SciTech Connect

In ground stabilized WAMI, stable objects with depth appear to have precessive motion due to sensor movement alongside objects undergoing true, independent motion in the scene. Computational objective is to disambiguate independent and structural motion in WAMI efficiently and robustly.

Vesom, G

2012-03-23T23:59:59.000Z

325

Normal-Mode Decomposition of Small-Scale Oceanic Motions  

Science Conference Proceedings (OSTI)

Small-scale oceanic motions consist of vortical motion and internal waves. In a linear or weakly nonlinear system these two types of motions can be unambiguously separated using normal-mode decomposition in which the vortical mode carries the ...

Ren-Chieh Lien; Peter Müller

1992-12-01T23:59:59.000Z

326

Kinetics of PBX9404 Aging  

DOE Green Energy (OSTI)

PBX 9404 is an early formulation of HMX from which we can learn about the effects of aging in the weapons stockpile. Of particular interest is the presence of 3% nitrocellulose in PBX 9404 as an energetic binder. Nitrocellulose is used pervasively in smokeless gunpowders and was formerly used extensively in the film and art preservation industries. It is well known that nitrocellulose decomposes autocatalytically, and stabilizers, such as the diphenylamine used in PBX 9404, are used to retard its decomposition. Even so, its lifetime is still limited, and the reactions eventually leading to catastrophic autocatalysis are still not understood well despite years of work. In addition to reducing the available energy in the explosive, degradation of nitrocellulose affects the mechanical properties of the pressed PBX 9404 parts by the associated reduction in molecular weight, which reduces the strength of the binder. A structural formula for a monomer of the nitrocellulose used in PBX 9404 is shown. The initial nitration level is 2.3 of 3.0 possible sites, and they have different reactivities. Degradation of nitrocellulose affects many properties. As an aid in examining historical chemical analysis data, several measures of degradation are given for the simple replacement of a nitro group with a hydrogen. The weight percent of nitrocellulose remaining for an initial concentration of 3% as used in PBX 9404 is also given. Of course, the real degradation reaction is more complicated, including chain scission and crosslinking reactions giving other gas species. During the course of this work, we spent considerable time addressing the question, ''Why is PBX 9404 blue?'' There was actually considerable controversy in the color evolution with aging, and the situation was clarified by Ben Richardson at Pantex. Workers there assured us that PBX 9404 starts with an ivory color. Drying the prill prior to pressing turns it a mottled blue, and well-preserved prill samples retain a blue color decades after formulation. Subsequently, heat and light both send it through a progression of colors from grayish blue, blue-green, green, brown, dirty yellow, mottled tan, and eventually pale tan. The progression is accelerated by oxygen and possibly moisture, as has been shown in several accelerated aging studies. The precise compounds causing the color evolution are uncertain, but they are undoubtedly a progression of quinoidal, nitroso, and nitrated DPA compounds. For example, paranitroso DPA is deep blue. Unfortunately, the location of various nitrated DPAs, which ranged from yellow to orange to red to brown and which were used by Pantex as analytical standards in the 1970s, is not currently known. While the color change is indicative of aging, it is by no means a quantitative measure of the extent of nitrocellulose degradation. Inspection of the literature yielded a variety of kinetic models, and the activation energy typically ranges from 25-35 kcal/mol for T<100 C. This literature qualitatively predicts times for 30% decomposition ranging from a few days at 100 C to 1-2 years at 50 C to 50 years at room temperature. To develop a quantitative model, we used the data of Leider and Seaton, which were collected at conditions most closely matching stockpile conditions for any data set we had available. They used PBX 9404 heated as pressed pellets in closed vessels at temperatures ranging from 50 to 100 C for times up to three years, and they report mass loss, gas yield and composition, and chemical analysis of the residual solid by methods used in stockpile surveillance. Initial kinetic analysis of the weight of remaining nitrocellulose as measured by liquid chromatography and the loss of nitrate esters by a colorimetric technique gave an activation energy of 27 kcal/mol. However, the reaction is complex due to the different stability of the three nitroester positions, and this complexity required either parallel first-order reactions or an nth-order reaction (n=3.6), which is mathematically equivalent to a Gamma distribution of frequency factors

Burnham, A K; Fried, L E

2006-09-11T23:59:59.000Z

327

Yucca Mountain | Department of Energy  

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

National Science Bowl 2013 National Science Bowl 2013 President Obama Visits the Energy Department Four Years of Leadership with Secretary Chu The Technology Showcase: AC Kinetics...

328

Note on numerical study of the beam energy spread in NDCX-I  

E-Print Network (OSTI)

of beam current, (d) kinetic energy history by of beam macroF I G . 3. N D C X - I beam energy history from (left) Warpplate and their kinetic energy history is plotted in F i g .

Vay, J.-L.

2011-01-01T23:59:59.000Z

329

Planning and Teaching Compliant Motion Strategies  

E-Print Network (OSTI)

This thesis presents a new high level robot programming system. The programming system can be used to construct strategies consisting of compliant motions, in which a moving robot slides along obstacles in its ...

Buckley, Stephen J.

1987-01-01T23:59:59.000Z

330

Atomistic Simulation of Slow Grain Boundary Motion  

E-Print Network (OSTI)

Existing atomistic simulation techniques to study grain boundary motion are usually limited to either high velocities or temperatures and are difficult to compare to realistic experimental conditions. Here we introduce an ...

Deng, Chuang

331

Earthquake ground motion modeling on parallel computers  

Science Conference Proceedings (OSTI)

We describe the design and discuss the performance of a parallel elastic wave propagation simulator that is being used to model and study earthquake-induced ground motion in large sedimentary basins. The components of the system include mesh generators, ...

Hesheng Bao; Jacobo Bielak; Omar Ghattas; Loukas F. Kallivokas; David R. O'Hallaron; Jonathan R. Shewchuk; Jifeng Xu

1996-11-01T23:59:59.000Z

332

Vertical Motion of Neutrally Buoyant Floats  

Science Conference Proceedings (OSTI)

The vertical motion of a neutrally buoyant float is determined from the solution to the nonlinear forced harmonic oscillator equation originally set forth by Voorhis. Float response to forced vertical oscillations is characterized by the response ...

Louis Goodman; Edward R. Levine

1990-02-01T23:59:59.000Z

333

Equations of Motion Using Thermodynamic Coordinates  

Science Conference Proceedings (OSTI)

The forms of the primitive equations of motion and continuity are obtained when an arbitrary thermodynamic state variable=mrestricted only to be vertically monotonic=mis used as the vertical coordinate. Natural generalizations of the Montgomery ...

Roland A. de Szoeke

2000-11-01T23:59:59.000Z

334

Motion to Withdraw from Yucca Mountain application | Department...  

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

Motion to Withdraw from Yucca Mountain application Motion to Withdraw from Yucca Mountain application DOE's withdraws it's pending license application for a permanent geologic...

335

An Independent Derivation of the Oxford Jet Kinetic Luminosity Formula  

E-Print Network (OSTI)

This letter presents a theoretical derivation of an estimate for a radio source jet kinetic luminosity. The expression yields jet powers that are quantitatively similar to a more sophisticated empirical relation published by the Willott, Blundell and Rawlings at Oxford. The formula allows one to estimate the jet kinetic luminosity from the measurement of the optically thin radio lobe emission in quasars and radio galaxies. Motivated by recent X-ray observation, the derivation assumes that most of the energy in the lobes is in plasma thermal energy with a negligible contribution from magnetic energy (not equipartition). The close agreement of the two independent expressions makes the veracity of these estimates seem very plausible.

Brian Punsly

2005-03-11T23:59:59.000Z

336

Ground Motion Model of the SLAC Site ?  

E-Print Network (OSTI)

motion p(?, L) can be written as p(?, L) = p(?)2(1 ? c(?, L)) which in turn can be transformed into P(?, k) [9]. We present a ground motion model for the SLAC site. This Measurements [2, 6] show that the fast motion in a rea-model is based on recent ground motion studies performed sonably quiet site consists primarily of elastic waves prop-at SLAC as well as on historical data. The model includes agating with a high velocity v (of the order of km/s). wave-like, diffusive and systematic types of motion. An The correlation is then completely defined by this velocity attempt is made to relate measurable secondary properties (which may be a function of frequency) and by the distri-of the ground motion with more basic characteristics such bution of the noise sources. In the case where the waves as the layered geological structure of the surrounding earth, propagate on the surface and are distributed uniformly in depth of the tunnel, etc. This model is an essential step in azimuthal angle, the correlation is given by c(?, L) = evaluating sites for a future linear collider. ?cos(?L/v cos(?))?? = J0(?L/v) and the corresponding 2-D spectrum of the ground motion is P(?, k) = 2p(?) / ? (?/v(f)) 2 ? k2, |k | ? ?/v(f). The absolute power spectrum of the fast motion, assumed for the SLAC model, corresponds to measurements performed at 2 AM in one of the quietest locations at SLAC, sector 10 of the linac [2], (see Fig.1). The spatial properties are defined by the phase velocity found from correlation measurements v(f) = 450 + 1900 exp(?f/2) (with v in m/s, f in Hz) [2]. 1

Andrei Seryi; Tor Raubenheimer

2000-01-01T23:59:59.000Z

337

On the Kinematics of Undulator Girder Motion  

SciTech Connect

The theory of rigid body kinematics is used to derive equations that govern the control and measurement of the position and orientation of undulator girders. The equations form the basis of the girder matlab software on the LCLS control system. The equations are linear for small motion and easily inverted as desired. For reference, some relevant girder geometrical data is also given. Equations 6-8 relate the linear potentiometer readings to the motion of the girder. Equations 9-11 relate the cam shaft angles to the motion of the girder. Both sets are easily inverted to either obtain the girder motion from the angles or readings, or, to find the angles and readings that would give a desired motion. The motion of any point on the girder can be calculated by applying either sets of equations to the two cam-planes and extrapolating in the z coordinate using equation 19. The formulation of the equations is quite general and easily coded via matrix and vector methods. They form the basis of the girder matlab software on the LCLS control system.

Welch, J

2011-08-18T23:59:59.000Z

338

The Hydriding Kinetics of Organic Hydrogen Getters  

DOE Green Energy (OSTI)

The aging of hermetically sealed systems is often accompanied by the gradual production of hydrogen gas that is a result of the decay of environmental gases and the degradation of organic materials. In particular, the oxygen, water, hydrogen ''equilibrium'' is affected by the removal of oxygen due the oxidation of metals and organic materials. This shift of the above ''equilibrium'' towards the formation of hydrogen gas, particularly in crevices, may eventually reach an explosive level of hydrogen gas or degrade metals by hydriding them. The latter process is generally delayed until the oxidizing species are significantly reduced. Organic hydrogen getters introduced by Allied Signal Aerospace Company, Kansas City Division have proven to be a very effective means of preventing hydrogen gas accumulation in sealed containers. These getters are relatively unaffected by air and environmental gases. They can be packaged in a variety of ways to fit particular needs such as porous pellets, fine or coarse [gravel] powder, or loaded into silicone rubber. The hydrogen gettering reactions are extremely irreversible since the hydrogen gas is converted into an organic hydrocarbon. These getters are based on the palladium-catalyzed hydrogenation of triple bonds to double and then single bonds in aromatic aryl compounds. DEB (1,4 bis (phenyl ethynyl) benzene) typically mixed with 25% by weight carbon with palladium (1% by weight of carbon) is one of the newest and best of these organic hydrogen getters. The reaction mechanisms are complex involving solid state reaction with a heterogeneous catalyst leading to the many intermediates, including mixed alkyl and aryl hydrocarbons with the possibilities of many isomers. The reaction kinetics mechanisms are also strongly influenced by the form in which they are packaged. For example, the hydriding rates for pellets and gravel have a strong dependence on reaction extent (i.e., DEB reduction) and a kinetic order in pressure of 0.76. Silicone rubber based DEB getters hydride at a much lower rate, have little dependence on reaction extent, have a higher kinetic order in pressure (0.87), and have a lower activation energy. The kinetics of the reaction as a function of hydrogen pressure, stoichiometry, and temperature for hydrogen and deuterium near ambient temperature (0 to 75 C) for pressures near or below 100 Pa over a wide range (in some cases, the complete) hydrogenation range are presented along with multi-dimensional rate models.

Powell, G. L.

2002-02-11T23:59:59.000Z

339

Spontaneous motion in hierarchically assembled active matter  

E-Print Network (OSTI)

With exquisite precision and reproducibility, cells orchestrate the cooperative action of thousands of nanometer-sized molecular motors to carry out mechanical tasks at much larger length scales, such as cell motility, division and replication. Besides their biological importance, such inherently non-equilibrium processes are an inspiration for developing biomimetic active materials from microscopic components that consume energy to generate continuous motion. Being actively driven, these materials are not constrained by the laws of equilibrium statistical mechanics and can thus exhibit highly sought-after properties such as autonomous motility, internally generated flows and self-organized beating. Starting from extensile microtubule bundles, we hierarchically assemble active analogs of conventional polymer gels, liquid crystals and emulsions. At high enough concentration, microtubules form a percolating active network characterized by internally driven chaotic flows, hydrodynamic instabilities, enhanced transport and fluid mixing. When confined to emulsion droplets, 3D networks spontaneously adsorb onto the droplet surfaces to produce highly active 2D nematic liquid crystals whose streaming flows are controlled by internally generated fractures and self-healing, as well as unbinding and annihilation of oppositely charged disclination defects. The resulting active emulsions exhibit unexpected properties, such as autonomous motility, which are not observed in their passive analogues. Taken together, these observations exemplify how assemblages of animate microscopic objects exhibit collective biomimetic properties that are starkly different from those found in materials assembled from inanimate building blocks, challenging us to develop a theoretical framework that would allow for a systematic engineering of their far-from-equilibrium material properties.

Tim Sanchez; Daniel T. N. Chen; Stephen J. DeCamp; Michael Heymann; Zvonimir Dogic

2013-01-07T23:59:59.000Z

340

The Impact of Alternative Fuels on Combustion Kinetics  

DOE Green Energy (OSTI)

The research targets the development of detailed kinetic models to quantitatively characterize the impact of alternative fuels on the performance of Navy turbines and diesel engines. Such impacts include kinetic properties such as cetane number, flame speed, and emissions as well as physical properties such as the impact of boiling point distributions on fuel vaporization and mixing. The primary focus will be Fischer-Tropsch liquids made from natural gas, coal or biomass. The models will include both the effects of operation with these alternative fuels as well as blends of these fuels with conventional petroleum-based fuels. The team will develop the requisite kinetic rules for specific reaction types and incorporate these into detailed kinetic mechanisms to predict the combustion performance of neat alternative fuels as well as blends of these fuels with conventional fuels. Reduced kinetic models will be then developed to allow solution of the coupled kinetics/transport problems. This is a collaboration between the Colorado School of Mines (CSM) and the Lawrence Livermore National Laboratory (LLNL). The CSM/LLNL team plans to build on the substantial progress made in recent years in developing accurate detailed chemical mechanisms for the oxidation and pyrolysis of conventional fuels. Particular emphasis will be placed upon reactions of the isoalkanes and the daughter radicals, especially tertiary radicals, formed by abstraction from the isoalkanes. The various components of the program are described. We have been developing the kinetic models for two iso-dodecane molecules, using the same kinetic modeling formalisms that were developed for the gasoline and diesel primary reference fuels. These mechanisms, and the thermochemical and transport coefficient submodels for them, are very close to completion at the time of this report, and we expect them to be available for kinetic simulations early in the coming year. They will provide a basis for prediction and selection of desirable F-T molecules for use in jet engine simulations, where we should be able to predict the ignition, combustion and emissions characteristics of proposed fuel components. These mechanisms include the reactions and chemical species needed to describe high temperature phenomena such as shock tube ignition and flammability behavior, and they will also include low temperature kinetics to describe other ignition phenomena such as compression ignition and knocking. During the past years, our hydrocarbon kinetics modeling group at LLNL has focused a great deal on fuels typical of gasoline and diesel fuel. About 10 years ago, we developed kinetic models for the fuel octane primary reference fuels, n-heptane [1] and iso-octane [2], which have 7 and 8 carbon atoms and are therefore representative of typical gasoline fuels. N-heptane represents the low limit of knock resistance with an octane number of 0, while iso-octane is very knock resistant with an octane number of 100. High knock resistance in iso-octane was attributed largely to the large fraction of primary C-H bonds in the molecule, including 15 of the 18 C-H bonds, and the high bond energy of these primary bonds plays a large role in this knock resistance. In contrast, in the much more ignitable n-heptane, 10 of its 16 C-H bonds are much less strongly bound secondary C-H bonds, leading to its very low octane number. All of these factors, as well as a similarly complex kinetic description of the equally important role of the transition state rings that transfer H atoms within the reacting fuel molecules, were quantified and collected into large kinetic reaction mechanisms that are used by many researchers in the fuel chemistry world.

Pitz, W J; Westbrook, C K

2009-07-30T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Integrals of motion from TBA and lattice-conformal dictionary  

E-Print Network (OSTI)

The integrals of motion of the tricritical Ising model are obtained by Thermodynamic Bethe Ansatz (TBA) equations derived from the A_4 integrable lattice model. They are compared with those given by the conformal field theory leading to a unique one-to-one lattice-conformal correspondence. They can also be followed along the renormalization group flows generated by the action of the boundary field \\phi_{1,3} on conformal boundary conditions in close analogy to the usual TBA description of energies.

G. Feverati; P. Grinza

2004-05-12T23:59:59.000Z

342

FOCUS: ION-SURFACE COLLISIONS AND PEPTIDE RADICAL Kinetics of Surface-Induced Dissociation of  

E-Print Network (OSTI)

[42]. Hydro- genated surfaces are known to have lower energy conversion efficiency than source internal energy and without MALDI matrix interference. The dissociation kinetics of N(CH3)4 and N in laboratory collision energy, changes in fragmentation timescale and dominant fragment ions were observed

Wysocki, Vicki H.

343

Oxidation Kinetics Modeling Applying Phase Field Approach  

Science Conference Proceedings (OSTI)

Presentation Title, Oxidation Kinetics Modeling Applying Phase Field Approach ... chemical reaction rates will increase exponentially and environmental attack ...

344

Kinetics of Nano Ti Carbides Precipitation  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2011. Symposium, Steel Product Metallurgy and Applications. Presentation Title, Kinetics of Nano ...

345

Gravitational energy  

E-Print Network (OSTI)

Observers at rest in a stationary spacetime flat at infinity can measure small amounts of rest-mass+internal energies+kinetic energies+pressure energy in a small volume of fluid attached to a local inertial frame. The sum of these small amounts is the total "matter energy" for those observers. The total mass-energy minus the matter energy is the binding gravitational energy. Misner, Thorne and Wheeler evaluated the gravitational energy of a spherically symmetric static spacetime. Here we show how to calculate gravitational energy in any static and stationary spacetime for isolated sources with a set of observers at rest. The result of MTW is recovered and we find that electromagnetic and gravitational 3-covariant energy densities in conformastatic spacetimes are of opposite signs. Various examples suggest that gravitational energy is negative in spacetimes with special symmetries or when the energy-momentum tensor satisfies usual energy conditions.

Joseph Katz

2005-10-20T23:59:59.000Z

346

Fault-safe code motion for type-safe languages  

Science Conference Proceedings (OSTI)

Compilers for Java and other type-safe languages have historically worked to overcome overheads and constraints imposed by runtime safety checks and precise exception semantics. We instead exploit these safety properties to perform code motion optimizations ... Keywords: code motion, intermediate representations, partial redundancy elimination, safe code motion, safety dependences, scheduling, speculative code motion

Brian R. Murphy; Vijay Menon; Florian T. Schneider; Tatiana Shpeisman; Ali-Reza Adl-Tabatabai

2008-04-01T23:59:59.000Z

347

Crustal motion in Indonesia from Global Positioning System measurements  

E-Print Network (OSTI)

Crustal motion in Indonesia from Global Positioning System measurements Y. Bock,1 L. Prawirodirdjo: crustal motion, Indonesia tectonics, GPS, current plate motions, Southeast Asia Citation: Bock, Y., L, Crustal motion in Indonesia from Global Positioning System measurements, J. Geophys. Res., 108(B8), 2367

McCaffrey, Robert

348

Synthesis of complex dynamic character motion from simple animations  

Science Conference Proceedings (OSTI)

In this paper we present a general method for rapid prototyping of realistic character motion. We solve for the natural motion from a simple animation provided by the animator. Our framework can be used to produce relatively complex realistic motion ... Keywords: animation, animation w/constraints, motion transformation, physically based animation, physically based modeling, spacetime constraints

C. Karen Liu; Zoran Popovi?

2002-07-01T23:59:59.000Z

349

Two algorithms for motion estimation from alternate exposure images  

Science Conference Proceedings (OSTI)

Most algorithms for dense 2D motion estimation assume pairs of images that are acquired with an idealized, infinitively short exposure time. In this work we compare two approaches that use an additional, motion-blurred image of a scene to estimate highly ... Keywords: motion blur, motion estimation, total variation

Anita Sellent; Martin Eisemann; Marcus Magnor

2010-10-01T23:59:59.000Z

350

Marine Hydrokinetic Turbine Power-Take-Off Design for Optimal Performance and Low Impact on Cost-of-Energy: Preprint  

SciTech Connect

Marine hydrokinetic devices are becoming a popular method for generating marine renewable energy worldwide. These devices generate electricity by converting the kinetic energy of moving water, wave motion or currents, into electrical energy through the use of a power-take-off (PTO) system. Most PTO systems incorporate a mechanical or hydraulic drivetrain, power generator, and electric control/conditioning system to deliver the generated electric power to the grid at the required state. Like wind turbine applications, the PTO system must be designed for high reliability, good efficiency, and long service life with reasonable maintenance requirements, low cost, and an appropriate mechanical design for anticipated applied steady and unsteady loads. The ultimate goal of a PTO design is high efficiency and low maintenance and cost, with a low impact on the device cost-of-energy (CoE).

Beam, M.; Kline, B.; Elbing, B.; Straka, W.; Fontaine, A.; Lawson, M.; Li, Y.; Thresher, R.; Previsic, M.

2013-02-01T23:59:59.000Z

351

Marine Hydrokinetic Turbine Power-Take-Off Design for Optimal Performance and Low Impact on Cost-of-Energy: Preprint  

DOE Green Energy (OSTI)

Marine hydrokinetic devices are becoming a popular method for generating marine renewable energy worldwide. These devices generate electricity by converting the kinetic energy of moving water, wave motion or currents, into electrical energy through the use of a Power-Take-Off (PTO) system. Most PTO systems incorporate a mechanical or hydraulic drive train, power generator and electric control/conditioning system to deliver the generated electric power to the grid at the required state. Like wind turbine applications, the PTO system must be designed for high reliability, good efficiency, and long service life with reasonable maintenance requirements, low cost and an appropriate mechanical design for anticipated applied steady and unsteady loads. The ultimate goal of a PTO design is high efficiency, low maintenance and cost with a low impact on the device Cost-of-Energy (CoE).

Beam, M.; Kline, B.; Elbing, B.; Straka, W.; Fontaine, A.; Lawson, M.; Li, Y.; Thresher, R.; Previsic, M.

2012-04-01T23:59:59.000Z

352

Optimization of running strategies based on anaerobic energy and ...  

E-Print Network (OSTI)

Aug 13, 2013 ... We extend this analysis, based on the equation of motion and aerobic energy, to include a balance of anaerobic energy (or accumulated ...

353

On fast reactor kinetics studies  

Science Conference Proceedings (OSTI)

The results and the program of fast reactor core time and space kinetics experiments performed and planned to be performed at the IPPE critical facility is presented. The TIMER code was taken as computation support of the experimental work, which allows transient equations to be solved in 3-D geometry with multi-group diffusion approximation. The number of delayed neutron groups varies from 6 to 8. The code implements the solution of both transient neutron transfer problems: a direct one, where neutron flux density and its derivatives, such as reactor power, etc, are determined at each time step, and an inverse one for the point kinetics equation form, where such a parameter as reactivity is determined with a well-known reactor power time variation function. (authors)

Seleznev, E. F.; Belov, A. A. [Nuclear Safety Inst. of the Russian Academy of Sciences IBRAE (Russian Federation); Matveenko, I. P.; Zhukov, A. M.; Raskach, K. F. [Inst. for Physics and Power Engineering IPPE (Russian Federation)

2012-07-01T23:59:59.000Z

354

HIP JOINT RECONSTRUCTION AND MOTION VISUALIZATION USING MRI AND OPTICAL MOTION CAPTURE  

E-Print Network (OSTI)

high-resolution images with high bone contrast. However, they involve radiation exposure and do propose here to use optical motion capture to simulate internal motions. The ability to image contrast, multi-planar imaging capabilities, and does not use harmful ionising radiation. Moreover, MR has

Gilles, Benjamin

355

Nonlinear evolution of the magnetized Kelvin-Helmholtz instability: from fluid to kinetic modeling  

E-Print Network (OSTI)

The nonlinear evolution of collisionless plasmas is typically a multi-scale process where the energy is injected at large, fluid scales and dissipated at small, kinetic scales. Accurately modelling the global evolution requires to take into account the main micro-scale physical processes of interest. This is why comparison of different plasma models is today an imperative task aiming at understanding cross-scale processes in plasmas. We report here the first comparative study of the evolution of a magnetized shear flow, through a variety of different plasma models by using magnetohydrodynamic, Hall-MHD, two-fluid, hybrid kinetic and full kinetic codes. Kinetic relaxation effects are discussed to emphasize the need for kinetic equilibriums to study the dynamics of collisionless plasmas in non trivial configurations. Discrepancies between models are studied both in the linear and in the nonlinear regime of the magnetized Kelvin-Helmholtz instability, to highlight the effects of small scale processes on the nonl...

Henri, P; Califano, F; Pegoraro, F; Rossi, C; Faganello, M; Šebek, O; Trávní?ek, P M; Hellinger, P; Frederiksen, J T; Nordlund, Å; Markidis, S; Keppens, R; Lapenta, G

2013-01-01T23:59:59.000Z

356

Energy  

Site Map; Printable Version; Share this resource. Send a link to Full Size Image - Energy Innovation Portalto someone by E-mail; Share Full Size Image - Energy ...

357

Kinetically Dominated FRII Radio Sources  

E-Print Network (OSTI)

The existence of FR II objects that are kinetically dominated, the jet kinetic luminosity, $Q$, is larger than the total thermal luminosity (IR to X-ray) of the accretion flow, $L_{bol}$, is of profound theoretical interest. Such objects are not expected in most theoretical models of the central engine of radio loud AGN. Thus, establishing such a class of objects is an important diagnostic for filtering through the myriad of theoretical possibilities. This paper attempts to establish a class of quasars that have existed in a state of kinetic dominance, $R(t)\\equiv Q(t)/L_{bol}(t)>1$, at some epoch, $t$. It is argued that the 10 quasars in this article with a long term time average $Q(t)$, $\\bar{Q}$, that exceed $L_{Edd}$ are likely to have satisfied the condition $R(t)>1$ either presently or in the past based on the rarity of $L_{bol}>L_{Edd}$ quasars. Finally, the existence of these sources is discussed in the context of the theory of the central engine.

Brian Punsly

2006-10-02T23:59:59.000Z

358

Energy Dissipation and Upwelling in a Western Boundary Current  

Science Conference Proceedings (OSTI)

Energy dissipation in a western boundary current begins with the conversion of mean potential energy into kinetic energy of “primary” eddies. The rate of this energy conversion is taken to equal the total energy dissipation rate, in analogy with ...

G. T. Csanady

1989-04-01T23:59:59.000Z

359

Dust Motions Driven by MHD Turbulence  

E-Print Network (OSTI)

We discuss the relative grain motions due to MHD turbulence in interstellar medium. It has been known for decades that turbulent drag is an efficient way to induce grain relative motions. However, earlier treatments disregarded magnetic field and used Kolmogorov turbulence. Unlike hydro turbulence, MHD turbulence is anisotropic on small scales. Moreover, compressible modes are important for MHD and magnetic perturbations can directly interact with grains. We provide calculations of grain relative motion for realistic interstellar turbulence driving that is consistent with the velocity dispersions observed in diffuse gas and for realistic grain charging. We account for the turbulence cutoff arising from abmipolar drag. Our results on grain shattering are consistent with the customary accepted cutoff size. We obtain grain velocities for turbulence with parameters consistent with those in HI and dark clouds. These velocities are smaller than those in earlier papers, where MHD effects were disregarded. Finally, w...

Lazarian, A; Yan, Huirong

2002-01-01T23:59:59.000Z

360

Slow motion responses of compliant offshore structures  

E-Print Network (OSTI)

An efficient method is developed to predict slow motion responses of slender compliant offshore structures in the unidirectional irregular waves and currents. The environmental loads are computed using the modified Morison equation based on slender-body approximation. The Hybrid Wave Model, which considers the nonlinear wave-wave interactions, is used to predict wave kinematics accurately up to the second order of wave steepness. Other second-order forces due to convective acceleration, free-surface fluctuation, time-varying structural displacement and axial divergence effects are also included. An iterative-incremental Newmark-,3 scheme is employed to simulate the structural responses in the time domain. It is observed that the predicted slow-drift motions of a Joint, Industry Project Spar and a Floating Jacket Platform are in excellent agreement with the model test measurements. However, the predicted slow-drift motions using Wheeler Stretching and Linear Extrapolation wave kinematics models do not agree with the measurements well.

Cao, Peimin

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Fuel-motion diagnostics and cineradiography  

SciTech Connect

Nuclear and non-nuclear applications of cineradiography are reviewed, with emphasis on diagnostic instrumentation for in-pile transient-reactor safety testing of nuclear fuel motion. The primary instrument for this purpose has been the fast-neutron hodoscope, which has achieved quantitative monitoring of time, location, mass, and velocity of fuel movement under the difficult conditions associated with transient-reactor experiments. Alternative diagnostic devices that have been developed have not matched the capabilities of the hodoscope. Other applications for the fuel-motion diagnostic apparatus are also evolving, including time-integrated radiography and direct time- and space-resolved fuel-pin power monitoring. Although only two reactors are now actively equipped with high-resolution fuel-motion diagnostic systems, studies and tests have been carried out in and for many other reactors.

DeVolpi, A.

1982-09-01T23:59:59.000Z

362

Video looping of human cyclic motion  

E-Print Network (OSTI)

In this thesis, a system called Video Looping is developed to analyze human cyclic motions. Video Looping allows users to extract human cyclic motion from a given video sequence. This system analyzes similarities from a large amount of live footage to find the point of smooth transition. The final cyclic loop is created using only a few output images. Video Looping is useful not only to learn and understand human movements, but also to apply the cyclic loop to various artistic applications. To provide practical animation references, the output images are presented as photo plate sequences to visualize human cyclic motion similar to Eadweard Muybridge's image sequences. The final output images can be used to create experimental projects such as composited multiple video loops or small size of web animations. Furthermore, they can be imported into animation packages, and animators can create keyframe animations by tracing them in 3D software.

Choi, Hye Mee

2006-05-01T23:59:59.000Z

363

Kinetic modelling of molecular hydrogen transport in microporous carbon materials.  

DOE Green Energy (OSTI)

The proposal of kinetic molecular sieving of hydrogen isotopes is explored by employing statistical rate theory methods to describe the kinetics of molecular hydrogen transport in model microporous carbon structures. A Lennard-Jones atom-atom interaction potential is utilized for the description of the interactions between H{sub 2}/D{sub 2} and the carbon framework, while the requisite partition functions describing the thermal flux of molecules through the transition state are calculated quantum mechanically in view of the low temperatures involved in the proposed kinetic molecular sieving application. Predicted kinetic isotope effects for initial passage from the gas phase into the first pore mouth are consistent with expectations from previous modeling studies, namely, that at sufficiently low temperatures and for sufficiently narrow pore mouths D{sub 2} transport is dramatically favored over H{sub 2}. However, in contrast to expectations from previous modeling, the absence of any potential barrier along the minimum energy pathway from the gas phase into the first pore mouth yields a negative temperature dependence in the predicted absolute rate coefficients - implying a negative activation energy. In pursuit of the effective activation barrier, we find that the minimum potential in the cavity is significantly higher than in the pore mouth for nanotube-shaped models, throwing into question the common assumption that passage through the pore mouths should be the rate-determining step. Our results suggest a new mechanism that, depending on the size and shape of the cavity, the thermal activation barrier may lie in the cavity rather than at the pore mouth. As a consequence, design strategies for achieving quantum-mediated kinetic molecular sieving of H{sub 2}/D{sub 2} in a microporous membrane will need, at the very least, to take careful account of cavity shape and size in addition to pore-mouth size in order to ensure that the selective step, namely passage through the pore mouth, is also the rate determining step.

Hankel, M.; Zhang, H.; Nguyen, T. X.; Bhatia, S. K.; Gray, S. K.; Smith, S. C. (Center for Nanoscale Materials); (The Univ. of Queensland)

2011-01-01T23:59:59.000Z

364

Kinetics of oil shale pyrolysis.  

E-Print Network (OSTI)

??The potential energy supply that could be provided by-tapping the energy reserve found in the Green River Formation of Utah, Colorado, and Wyoming has presented… (more)

Kowallis, Paul Clair

1905-01-01T23:59:59.000Z

365

Domain growth and ordering kinetics in dense quark matter  

Science Conference Proceedings (OSTI)

The kinetics of chiral transitions in quark matter is studied in a two-flavor Nambu-Jona-Lasinio model. We focus on the phase-ordering dynamics subsequent to a temperature quench from the massless quark phase to the massive quark phase. We study the dynamics by considering a phenomenological model (Ginzburg-Landau free-energy functional). The morphology of the ordering system is characterized by the scaling of the order-parameter correlation function.

Singh, A.; Puri, S. [Jawaharlal Nehru University, School of Physical Sciences (India); Mishra, H., E-mail: hm@prl.res.in [Physical Research Laboratory, Theory Division (India)

2012-06-15T23:59:59.000Z

366

NUCLEAR ENERGY PERGAMON Annals of Nuclear Energy 27 (2000) 138551398  

E-Print Network (OSTI)

The general theory of linear reactor kinetics and that of the induced neutron noise is developed for systemsannafs of NUCLEAR ENERGY PERGAMON Annals of Nuclear Energy 27 (2000) 138551398 www.elsevier.com/locate/anucene LINEAR REACTOR KINETICS AND NEUTRON NOISE IN SYSTEMS WITH FLUCTUATING BOUNDARIES Imre Pfizsit and Vasiliy

Pázsit, Imre

367

Methods for predicting rubble motion during blasting  

SciTech Connect

Recent applications of explosives and blasting agents to rubble rock have led to requirements for more elaborate design and analysis methods. In most blasting uses, it is necessary not only to fracture the rock, but also to move the broken rubble in a predictable manner. Many in situ extraction techniques require rubblization to take place in a confined region where rock motion is a predominate factor in creating a permeable broken bed. In this paper, two analytical methods are presented which describe the large rubble motion during blasting. These methods provide the blast designer with a tool for evaluation and further refinement of blasting patterns and timing sequences.

Schamaun, J.T.

1984-01-01T23:59:59.000Z

368

Kinetic theory of nonlinear transport phenomena in complex plasmas  

SciTech Connect

In contrast to the prevalent use of the phenomenological theory of transport phenomena, a number of transport properties of complex plasmas have been evaluated by using appropriate expressions, available from the kinetic theory, which are based on Boltzmann's transfer equation; in particular, the energy dependence of the electron collision frequency has been taken into account. Following the recent trend, the number and energy balance of all the constituents of the complex plasma and the charge balance on the particles is accounted for; the Ohmic loss has also been included in the energy balance of the electrons. The charging kinetics for the complex plasma comprising of uniformly dispersed dust particles, characterized by (i) uniform size and (ii) the Mathis, Rumpl, and Nordsieck power law of size distribution has been developed. Using appropriate expressions for the transport parameters based on the kinetic theory, the system of equations has been solved to investigate the parametric dependence of the complex plasma transport properties on the applied electric field and other plasma parameters; the results are graphically illustrated.

Mishra, S. K. [Institute for Plasma Research (IPR), Gandhinagar 382428 (India); Sodha, M. S. [Centre for Energy Studies (CES), Indian Institute of Technology Delhi (IITD), New Delhi 110016 (India)

2013-03-15T23:59:59.000Z

369

Stepping and crowding: statistical kinetics from an exclusion process perspective  

E-Print Network (OSTI)

Motor enzymes are remarkable molecular machines that use the energy derived from the hydrolysis of a nucleoside triphosphate to generate mechanical movement, achieved through different steps that constitute their kinetic cycle. These macromolecules, nowadays investigated with advanced experimental techniques to unveil their molecular mechanisms and the properties of their kinetic cycles, are implicated in many biological processes, ranging from biopolymerisation (RNA polymerases, ribosomes,...) to intracellular transport (motor proteins such as kinesins or dyneins). Although the kinetics of individual motors is well studied on both theoretical and experimental grounds, the repercussions of their stepping cycle on the collective dynamics is still to be understood. Advances in this direction will improve our comprehension of transport process in the natural intracellular medium, where processive motor enzymes might operate in crowded conditions. In this work, we therefore extend the current statistical kinetic analysis to study collective transport phenomena of motors in terms of lattice gas models belonging to the exclusion process class. Via numerical simulations, we show how to interpret and use the randomness calculated from single particle trajectories in crowded conditions. Importantly, we also show that time fluctuations and non-Poissonian behavior are intrinsically related to spatial correlations and the emergence of large, but finite, clusters of co-moving motors. The properties unveiled by our analysis have important biological implications on the collective transport characteristics of processive motor enzymes in crowded conditions.

Luca Ciandrini; M. Carmen Romano; A. Parmeggiani

2013-12-06T23:59:59.000Z

370

The feasibility of head motion tracking in helical CT: A step toward motion correction  

Science Conference Proceedings (OSTI)

Purpose: To establish a practical and accurate motion tracking method for the development of rigid motion correction methods in helical x-ray computed tomography (CT). Methods: A commercially available optical motion tracking system provided 6 degrees of freedom pose measurements at 60 Hz. A 4 Multiplication-Sign 4 calibration matrix was determined to convert raw pose data acquired in tracker coordinates to a fixed CT coordinate system with origin at the isocenter of the scanner. Two calibration methods, absolute orientation (AO), and a new method based on image registration (IR), were compared by means of landmark analysis and correlation coefficient in phantom images coregistered using the derived motion transformations. Results: Transformations calculated using the IR-derived calibration matrix were found to be more accurate, with positional errors less than 0.5 mm (mean RMS), and highly correlated image voxel intensities. The AO-derived calibration matrix yielded larger mean RMS positional errors ( Asymptotically-Equal-To 1.0 mm), and poorer correlation coefficients. Conclusions: The authors have demonstrated the feasibility of accurate motion tracking for retrospective motion correction in helical CT. Their new IR-based calibration method based on image registration and function minimization was simpler to perform and delivered more accurate calibration matrices. This technique is a useful tool for future work on rigid motion correction in helical CT and potentially also other imaging modalities.

Kim, Jung-Ha [Medical Radiation Sciences, University of Sydney, NSW 2141 (Australia); Nuyts, Johan [Department of Nuclear Medicine, Katholieke Universiteit, Leuven, Belgium and Medical Imaging Research Center, Katholieke Universiteit, Leuven (Belgium); Kuncic, Zdenka [School of Physics, University of Sydney, NSW 2006 (Australia); Fulton, Roger [Medical Radiation Sciences, University of Sydney, NSW 2141 (Australia); School of Physics, University of Sydney, NSW 2006 (Australia); Department of Medical Physics, Westmead Hospital, Westmead, NSW 2145 (Australia)

2013-04-15T23:59:59.000Z

371

Motional Spin Relaxation in Large Electric Fields  

E-Print Network (OSTI)

We discuss the precession of spin-polarized Ultra Cold Neutrons (UCN) and $^{3}$He atoms in uniform and static magnetic and electric fields and calculate the spin relaxation effects from motional $v\\times E$ magnetic fields. Particle motion in an electric field creates a motional $v\\times E$ magnetic field, which when combined with collisions, produces variations of the total magnetic field and results in spin relaxation of neutron and $^{3}$He samples. The spin relaxation times $T_{1}$ (longitudinal) and $T_{2}$ (transverse) of spin-polarized UCN and $^{3}$He atoms are important considerations in a new search for the neutron Electric Dipole Moment at the SNS \\emph{nEDM} experiment. We use a Monte Carlo approach to simulate the relaxation of spins due to the motional $v\\times E$ field for UCN and for $^{3}$He atoms at temperatures below $600,\\mathrm{mK}$. We find the relaxation times for the neutron due to the $v\\times E$ effect to be long compared to the neutron lifetime, while the $^{3}$He relaxation times may be important for the \\emph{nEDM} experiment.

Riccardo Schmid; B. Plaster; B. W. Filippone

2008-05-16T23:59:59.000Z

372

Smooth movers: perceptually guided human motion simulation  

Science Conference Proceedings (OSTI)

To animate a character, a number of poses are displayed in quick succession in order to create the illusion of motion. For most real-time applications, such as games, the pose update rate is largely constrained by the available hardware and overall simulation ...

Rachel McDonnell; Fiona Newell; Carol O'Sullivan

2007-08-01T23:59:59.000Z

373

Computer animation of Phanerozoic plate motions  

SciTech Connect

Since 1985, the PALEOMAP Project, in collaboration with research groups both in the US and abroad, has assembled a digital model that describes global plate motions during the last 600 million years. In this paper the authors present a series of computer animations that dynamically illustrates the movement of continents and terranes, and the evolution of the ocean basins since the breakup of the late Precambrian supercontinent. These animations depict the motion of the plates from both equatorial and polar perspectives. Mesozoic and Cenozoic plate tectonic reconstructions are based on a synthesis of linear magnetic anomalies, fracture zone locations, intracontinental rifts, collision and thrust belts, and zones of strike-slip. Paleozoic plate reconstructions, though more speculative, are based on evidence of past subduction, continental collision, and inferred sea floor spreading. The relative longitudinal positions of the continents during the Paleozoic and the width of intervening oceans have been adjusted to best explain changing biogeographic and paleoclimatic patterns. A new paleomagnetic/hot spot reference frame has been constructed that combines paleomagnetic data compiled by Rob Van der Voo (1992) with inferred motion relative to a fixed frame of hot spots. Using probable Early Mesozoic and Paleozoic hot spot tracks on the major continents, the authors have extended plate motions relative to the hot spot reference frame back to 400 million years.

Scotese, C.R. (Univ. of Texas, Arlington, TX (United States). Dept. of Geology)

1992-01-01T23:59:59.000Z

374

Realtime motion segmentation based multibody visual SLAM  

Science Conference Proceedings (OSTI)

In this paper, we present a practical vision based Simultaneous Localization and Mapping (SLAM) system for a highly dynamic environment. We adopt a multibody Structure from Motion (SfM) approach, which is the generalization of classical SfM to dynamic ...

Abhijit Kundu; K. Madhava Krishna; C. V. Jawahar

2010-12-01T23:59:59.000Z

375

Approach to developing a ground-motion design basis for facilities important to safety at Yucca Mountain  

SciTech Connect

The Department of Energy has proposed a methodology for developing a ground-motion design basis for prospective facilities at Yucca Mountain that are important to safety. The methodology utilizes a quasi-deterministic construct that is designed to provide a conservative, robust, and reproducible estimate of ground motion that has a one-in-ten chance of occurring during the preclosure period. This estimate is intended to define a ground-motion level for which the seismic design would ensure minimal disruption to operations; engineering analyses to ensure safe performance in the unlikely event that the design basis is exceeded are a part of the proposed methodology. 8 refs.

King, J.L.

1990-04-01T23:59:59.000Z

376

Microreactor for fast chemical kinetics  

E-Print Network (OSTI)

The chemical reaction process in a T-shaped microchannel is studied experimentally through the reaction of Ca++ with a fluorescent tracer, Calcium-green. For thin channels (10 um), diffusion of species is found to behave in a way independent of the thickness direction. In such a situation, simulations of a two-dimensional reaction-diffusion model agree remarkably well with the experimental measurements. The comparison of experiments and simulations is used to measure the chemical kinetic constant, which we find to be k=3.2 x 10^5 dm^3/(mol s). Applications of the analysis to faster reactions and to micro-titration are also discussed.

Baroud, C N; Menetrier, L; Tabeling, P; Baroud, Charles N.; Okkels, Fridolin; Menetrier, Laure; Tabeling, Patrick

2003-01-01T23:59:59.000Z

377

Kinetic Modeling of Microbiological Processes  

Science Conference Proceedings (OSTI)

Kinetic description of microbiological processes is vital for the design and control of microbe-based biotechnologies such as waste water treatment, petroleum oil recovery, and contaminant attenuation and remediation. Various models have been proposed to describe microbiological processes. This editorial article discusses the advantages and limiation of these modeling approaches in cluding tranditional, Monod-type models and derivatives, and recently developed constraint-based approaches. The article also offers the future direction of modeling researches that best suit for petroleum and environmental biotechnologies.

Liu, Chongxuan; Fang, Yilin

2012-09-17T23:59:59.000Z

378

Shale oil cracking. 1. Kinetics  

DOE Green Energy (OSTI)

Experiments were conducted to determine kinetics for thermal cracking of shale oil vapor over shale. Cracking temperatures of 504 to 610/sup 0/C and residence times of 2 to 11 seconds were used. A first-order Arrhenius rate expression and stoichiometry were obtained. Also observed were changes in the oil quality. Cracking decreased the H/C ratio, increased the nitrogen content, and decreased the pour point of the oil. Gas-phase oil cracking is contrasted to liquid-phase oil coking as a loss mechanism in oil-shale retorting.

Burnham, A.K.; Taylor, J.R.

1979-10-01T23:59:59.000Z

379

Energy  

Science Conference Proceedings (OSTI)

Energy. Summary: Key metrologies/systems: Scanning tunneling microscopy and one- and two-photon photoemission/Model ...

2012-10-02T23:59:59.000Z

380

Energy  

Home. Site Map; Printable Version; Share this resource. About; Search; Categories (15) Advanced Materials; Biomass and Biofuels; Building Energy Efficiency ...

Note: This page contains sample records for the topic "motion kinetic energy" 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

Stably Stratified Shear Turbulence: A New Model for the Energy Dissipation Length Scale  

Science Conference Proceedings (OSTI)

A model is presented to compute the turbulent kinetic energy dissipation length scale l? in a stably stratified shear flow. The expression for l? is derived from solving the spectral balance equation for the turbulent kinetic energy. The buoyancy ...

Y. Cheng; V. M. Canuto

1994-08-01T23:59:59.000Z

382

Application to Export Electric Energy OE Docket No. EA-318-B AEP Energy  

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

Inc.:Answer of AEP Energy to Sierra Club's Motion to Inc.:Answer of AEP Energy to Sierra Club's Motion to Intervene and Protest Application to Export Electric Energy OE Docket No. EA-318-B AEP Energy Partners Inc.:Answer of AEP Energy to Sierra Club's Motion to Intervene and Protest Application from AEP Energy Partner's Inc to export electric energy to Mexico. Answer of AEP to Sierra Club's Motion to Intervene 2-24-12.pdf More Documents & Publications Application to Export Electric Energy OE Docket No. EA-318-B AEP Energy Partners Inc: Comments of Sierra Club Application to Export Electric Energy OE Docket No. EA-318-B AEP Energy Partners Inc: AEP Response to Sierra's Club Response for Temporary Emergency Authorization Application to Export Electric Energy OE Docket No. EA-318-B AEP Energy Partners Inc: Sierra's Club Opposition to AEP Temporary Emergency

383

People can understand descriptions of motion without activating visual motion brain regions  

E-Print Network (OSTI)

What is the relationship between our perceptual and linguistic neural representations of the same event? We approached this question by asking whether visual perception of motion and understanding linguistic depictions of ...

Bedny, Marina

384

A direct search method for determination of DAEM kinetic parameters from nonisothermal TGA data (note)  

Science Conference Proceedings (OSTI)

In this study, a simple direct search method to be used for the determination of distributed activation energy model (DAEM) kinetic parameters from the nonisothermal thermogravimetric analysis (TGA) data of coals has been introduced. Process steps of ... Keywords: curve fitting, direct search technique, distributed activation energy model (DAEM), thermogravimetric analysis data (TGA)

Mustafa Güne?; Semin Güne?

2002-08-01T23:59:59.000Z

385

Nanocrystallization Reactions and Kinetics, Chemical Partitioning ...  

Science Conference Proceedings (OSTI)

Primary nanocrystallization reactions and kinetics will be discussed for selected FeCo-based ... Search of Half-Metallic Heusler Alloys and their Applications to ...

386

Aluminium Dissolution Kinetics in Caustic Media  

• Žuti?, V. and Stumm, W. (1984) Effect of organic acids and fluoride on the dissolution kinetics of hydrous alumina. A model study using the rotating disk

387

Thermodynamic and Kinetic Simulation and Experimental Results ...  

Science Conference Proceedings (OSTI)

Through the use of thermodynamic and kinetic modeling software, NETL has designed a systematic method that has been successfully developed to design an ...

388

Page not found | Department of Energy  

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

CX-010572: Categorical Exclusion Determination Brown University - Marine Hydro-Kinetic Energy Harvesting Using Cyber-Physical Systems CX(s) Applied: B3.6 Date: 02042013...

389

STATOR FOR SUPERSONIC COMPRESSOR - Energy Innovation Portal  

... for deceleration of gas to subsonic conditions and then for expansion of subsonic gas, to change kinetic energy of the gas to static pressure.

390

Potomac Electric Power Company's Motion to Intervene and Comment in Support  

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

Electric Power Company's Motion to Intervene and Comment in Electric Power Company's Motion to Intervene and Comment in Support of Emergency Petition and Complaint Potomac Electric Power Company's Motion to Intervene and Comment in Support of Emergency Petition and Complaint Docket No. EO-05-01. Docket No. EL05-145-000: Pursuant to Rules 211 and 214 of the Rules of Practice and Procedure of the Federal Energy Regulatory Commission ("FERC" or the "Commission"), 18 C.F.R. §§ 385.211 and 385.214 (2004), Potomac Electric Power Company ("Pepco") hereby moves to intervene in the above-captioned proceeding and supports the August 24, 2005 Emergency Petition and Complaint filed by the District of Columbia Public Service Commission ("DC PSC"). As discussed below, Mirant Corporation and its public utility subsidiaries (collectively,

391

Motion to Intervene and Initial Comments of PJM Interconnection, L.L.C. |  

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

and Initial Comments of PJM Interconnection, and Initial Comments of PJM Interconnection, L.L.C. Motion to Intervene and Initial Comments of PJM Interconnection, L.L.C. Motion to Intervene and Initial Comments of PJM Interconnection, L.L.C. On January 5, 2009, ITC Transmission filed with the Department of Energy a request to amend Presidential Permit PP-230-3, which authorizes ITC to own and operate specified electric transmission facilities at the Bunce Creek station that interconnect ITC with Hydro One Networks Inc electric transmission facilities at the Michigan-Ontario border. Motion to Intervene and Initial Comments of PJM Interconnection, L.L.C. More Documents & Publications Application for presidential permit OE Docket No. PP-230-4 International Transmission Company: Response of PJM Interconnection, L.L.C. to Answer of

392

HIGH-INTENSITY EFFECTS IN THE LONGITUDINAL MOTION OF STORED PARTICLE BEAMS  

SciTech Connect

A brief review is given of the various self-field phenomena associated with the longitudinal motion of particles in storage rings. Although there are some high-intensity phenomena for which the coupling of longitudinal and transverse motion is essential, such as, for example, the headtail effect; the great majority of high-intensity phenomena primarily involve either longitudinal or transverse degrees of freedom. In this review, we restrict our attention to phenomena which are essentially longitudinal in nature. It is convenient to consider separately the behavior of unbunched (coasting) and bunched (external RF system in operation) beams. Detailed experimental information on coasting beams has been obtained on the ISR, on the (old) CERN electron model CESAR, and on electron ring accelerators. All high-energy electron storage rings have bunched beams and, of course, so do synchrotrons, so that there are a large number of sources of experimental information about the longitudinal motion of bunched beams.

Sessler, Andrew M.

1973-02-01T23:59:59.000Z

393

Potomac Electric Power Company's Motion for Leave to Answer and Answer to  

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

for Leave to Answer and for Leave to Answer and Answer to Comments and Protests Potomac Electric Power Company's Motion for Leave to Answer and Answer to Comments and Protests Docket No. EO-05-01: Pursuant to Rules 212 and 213 of the Rules of Practice and Procedure of the Federal Energy Regulatory Commission ("FERC" or the "Commission"), 18 C.F.R. §§ 385.212 and 385.213 (2005), Potomac Electric Power Company ("Pepco") hereby (i) moves for leave to answer and (ii) answers certain of the comments and protests filed in the above-captioned proceeding. Potomac Electric Power Company's Motion for Leave to Answer and Answer to Comments and Protests More Documents & Publications Motion for Leave to Answer and Answer of Potomac Electric Power Company Answer of Potomac Electric Power Company and PJM lnterconnection, L.L.C. to

394

Nonlinear Motion of a Shallow Water Barotropic Vortex  

Science Conference Proceedings (OSTI)

Nonlinear motions of a shallow water barotropic vortex on a ? plane differ substantially from the analogous linear motions. The nonlinear model described here, in which wavenumber 1–3 asymmetries interact with each other and the mean vortex, ...

H. E. Willoughby

1994-12-01T23:59:59.000Z

395

Long-range video motion estimation using point trajectories  

E-Print Network (OSTI)

This thesis describes a new approach to video motion estimation, in which motion is represented using a set of particles. Each particle is an image point sample with a long-duration trajectory and other properties. To ...

Sand, Peter (Peter M.), 1977-

2006-01-01T23:59:59.000Z

396

Editing dynamic human motions via momentum and force  

Science Conference Proceedings (OSTI)

We present an integrated framework for interactive editing of the momentum and external forces in a motion capture sequence. Allowing user control of the momentum and forces provides a powerful and intuitive editing tool for dynamic motions. To make ...

Kwang Won Sok; Katsu Yamane; Jehee Lee; Jessica Hodgins

2010-07-01T23:59:59.000Z

397

Tropical Cyclone Motion: Environmental Interaction Plus a Beta Effect  

Science Conference Proceedings (OSTI)

The dynamics of tropical cyclone motion are investigated by solving for instantaneous motion tendencies using the divergent barotropic vorticity equation on a beta plane. Two methods of solution are presented a direct analytic solution for a ...

Greg J. Holland

1983-02-01T23:59:59.000Z

398

Deduction of Vertical Motion in the Atmosphere from Aircraft Measurements  

Science Conference Proceedings (OSTI)

Equations for deducing the vertical motion of air based on aircraft measurements are presented along with derivations. The equations are based on the aircraft equations of motion, but due to different assumptions, the resulting equations are ...

Fred J. Kopp

1985-12-01T23:59:59.000Z

399

Robust hybrid control for autonomous vehicle motion planning  

E-Print Network (OSTI)

This dissertation focuses on the problem of motion planning for agile autonomous vehicles. In realistic situations, the motion planning problem must be solved in real-time, in a dynamic and uncertain environment. The ...

Frazzoli, Emilio, 1970-

2001-01-01T23:59:59.000Z

400

Mean Vertical Motions Seen by Radar Wind Profilers  

Science Conference Proceedings (OSTI)

Radar wind profilers have been used to measure directly the vertical motion above the radar site. Mean values of vertical motions in the troposphere and lower stratosphere reported at sites in and near mountains are often several centimeters per ...

G. D. Nastrom; T. E. VanZandt

1994-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Evaluation of Vertical Motion: Past, Present, and Future  

Science Conference Proceedings (OSTI)

The potential impact of gridded output from numerical models on operational forecasting of vertical motion is examined. A review of historical techniques for operational vertical motion evaluation is presented. An attempt is made to relate ...

Lawrence B. Dunn

1991-03-01T23:59:59.000Z

402

Chemistry Resolved Kinetic Flow Modeling of TATB Based Explosives  

SciTech Connect

Detonation waves in insensitive, TATB based explosives are believed to have multi-time scale regimes. The initial burn rate of such explosives has a sub-microsecond time scale. However, significant late-time slow release in energy is believed to occur due to diffusion limited growth of carbon. In the intermediate time scale concentrations of product species likely change from being in equilibrium to being kinetic rate controlled. They use the thermo-chemical code CHEETAH linked to an ALE hydrodynamics code to model detonations. They term their model chemistry resolved kinetic flow as CHEETAH tracks the time dependent concentrations of individual species in the detonation wave and calculates EOS values based on the concentrations. A HE-validation suite of model simulations compared to experiments at ambient, hot, and cold temperatures has been developed. They present here a new rate model and comparison with experimental data.

Vitello, P A; Fried, L E; Howard, W M; Levesque, G; Souers, P C

2011-07-21T23:59:59.000Z

403

Active transport: A kinetic description based on thermodynamic grounds  

E-Print Network (OSTI)

We show that active transport processes in biological systems can be understood through a local equilibrium description formulated at the mesoscale, the scale to describe stochastic processes. This new approach uses the method established by nonequilibrium thermodynamics to account for the irreversible processes occurring at this scale and provides nonlinear kinetic equations for the rates in terms of the driving forces. The results show that the application domain of nonequilibrium thermodynamics method to biological systems goes beyond the linear domain. A model for transport of Ca$^{2+}$ by the Ca$^{2+}$-ATPase, coupled to the hydrolysis of adenosine-triphosphate is analyzed in detail showing that it depends on the reaction Gibbs energy in a non-linear way. Our results unify thermodynamic and kinetic descriptions, thereby opening new perspectives in the study of different transport phenomena in biological systems.

S. Kjelstrup; J. M. Rubi; D. Bedeaux

2004-12-17T23:59:59.000Z

404

COMSOL-based Nuclear Reactor Kinetics Studies at the HFIR  

Science Conference Proceedings (OSTI)

The computational ability to accurately predict the dynamic behavior of a nuclear reactor core in response to reactivity-induced perturbations is an important subject in reactor physics. Space-time and point kinetics methodologies were developed for the purpose of studying the transient-induced behavior of the High Flux Isotope Reactor s (HFIR) compact core. The space-time simulations employed the three-energy-group neutron diffusion equations, and transients initiated by control cylinder and hydraulic tube rabbit ejections were studied. The work presented here is the first step towards creating a comprehensive multiphysics methodology for studying the dynamic behavior of the HFIR core during reactivity perturbations. The results of these studies show that point kinetics is adequate for small perturbations in which the power distribution is assumed to be time-independent, but space-time methods must be utilized to determine localized effects.

Chandler, David [ORNL; Freels, James D [ORNL; Maldonado, G Ivan [ORNL; Primm, Trent [ORNL

2011-01-01T23:59:59.000Z

405

Analysis of Precipitation Reaction Kinetics: Kinetic Model vs ...  

Science Conference Proceedings (OSTI)

The model combines thermodynamic input as, e.g., obtained from CALPHAD and an additional contribution of misfit strain energy. By consequent application of ...

406

Ground motion data for International Collider models  

SciTech Connect

The proposed location for the International Linear Collider (ILC) in the Americas region is Fermilab in Batavia Illinois. If built at this location the tunnels would be located in the Galena Platteville shale at a depth of 100 or more meters below the surface. Studies using hydro static water levels and seismometers have been conducted in the MINOS hall and the LaFrange Mine in North Aurora Illinois to determine the level of ground motion. Both these locations are in the Galena Platteville shale and indicate the typical ground motion to be expected for the ILC. The data contains both natural and cultural noise. Coefficients for the ALT law are determined. Seismic measurements at the surface and 100 meters below the surface are presented.

Volk, J.T.; LeBrun, P.; Shiltsev, V.; Singatulin, S.; /Fermilab

2007-11-01T23:59:59.000Z

407

Compression of ground-motion data  

Science Conference Proceedings (OSTI)

Ground motion data has been recorded for many years at Nevada Test Site and is now stored on thousands of digital tapes. The recording format is very inefficient in terms of space on tape. This report outlines a method to compress the data onto a few hundred tapes while maintaining the accuracy of the recording and allowing restoration of any file to the original format for future use. For future digitizing a more efficient format is described and suggested.

Long, J.W.

1981-04-01T23:59:59.000Z

408

Energy  

Science Conference Proceedings (OSTI)

There has been a significant progress in converting solar energy using silicon technology to replace fossil fuels. However, its high cost of production has led ...

409

Energy  

Efficient, Low-cost Microchannel Heat Exchanger. Return to Marketing Summary. Skip footer navigation to end of page. ... Energy Innovation Portal on Facebook;

410

Energy  

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

Energy Energy Energy Express Licensing Accelerator-Driven Transmutation Of Spent Fuel Elements Express Licensing Acid-catalyzed dehydrogenation of amine-boranes Express Licensing Air Breathing Direct Methanol Fuel Cell Express Licensing Aligned Crystalline Semiconducting Film On A Glass Substrate And Method Of Making Express Licensing Anion-Conducting Polymer, Composition, And Membrane Express Licensing Apparatus for Producing Voltage and Current Pulses Express Licensing Biaxially oriented film on flexible polymeric substrate Express Licensing Corrosion Test Cell For Bipolar Plates Express Licensing Device for hydrogen separation and method Negotiable Licensing Durable Fuel Cell Membrane Electrode Assembly (MEA) Express Licensing Energy Efficient Synthesis Of Boranes Express Licensing

411

Energy  

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

energy, including Fundamental advances in nuclear fuels Nonproliferation safeguards Reactor concepts Reactor waste disposition Animation of new reactor concept for deep space...

412

Dust Motions Driven by MHD Turbulence  

E-Print Network (OSTI)

We discuss the relative grain motions due to MHD turbulence in interstellar medium. It has been known for decades that turbulent drag is an efficient way to induce grain relative motions. However, earlier treatments disregarded magnetic field and used Kolmogorov turbulence. Unlike hydro turbulence, MHD turbulence is anisotropic on small scales. Moreover, compressible modes are important for MHD and magnetic perturbations can directly interact with grains. We provide calculations of grain relative motion for realistic interstellar turbulence driving that is consistent with the velocity dispersions observed in diffuse gas and for realistic grain charging. We account for the turbulence cutoff arising from abmipolar drag. Our results on grain shattering are consistent with the customary accepted cutoff size. We obtain grain velocities for turbulence with parameters consistent with those in HI and dark clouds. These velocities are smaller than those in earlier papers, where MHD effects were disregarded. Finally, we consider grain velocities arising from photoelectric emission, radiation pressure and the thrust due to molecular hydrogen formation. These are lower than relative velocities induced by turbulence. We conclude that turbulence should prevent these mechanisms from segregating grains by size.

A. Lazarian; Huirong Yan

2002-05-17T23:59:59.000Z

413

Dynamical Potential Energy: A New Approach to Ocean Energetics  

Science Conference Proceedings (OSTI)

The concept of available potential energy is supposed to indicate which part of the potential energy is available to transform into kinetic energy. Yet it is impossible to obtain a unique definition of available potential energy for the real ocean ...

Fabien Roquet

2013-02-01T23:59:59.000Z

414

Active learning for real-time motion controllers  

Science Conference Proceedings (OSTI)

This paper describes an approach to building real-time highly-controllable characters. A kinematic character controller is built on-the-fly during a capture session, and updated after each new motion clip is acquired. Active learning is used to identify ... Keywords: active learning, human motion, motion capture

Seth Cooper; Aaron Hertzmann; Zoran Popovi?

2007-08-01T23:59:59.000Z

415

Sharing motion information with close family and friends  

Science Conference Proceedings (OSTI)

We present the Motion Presence application, an augmented phone book style application that allows close friends and family to view each other's current motion status ("moving" or "not moving") on their mobile phones. We performed a two week long field ... Keywords: awareness, mobile presence, motion detection, privacy

Frank R. Bentley; Crysta J. Metcalf

2007-04-01T23:59:59.000Z

416

Measurement of sinusoidal vibration from motion blurred images  

Science Conference Proceedings (OSTI)

Previous vision-based methods usually measure vibration from large sequence of unblurred images recorded by high-speed video or stroboscopic photography. In this paper, we propose a novel method for sinusoidal vibration measurement based on motion blurred ... Keywords: Geometric moment, Motion blur, Motion blurred image, Vibration measurement

Shigang Wang; Baiqing Guan; Guobao Wang; Qian Li

2007-07-01T23:59:59.000Z

417

X-ray movies reveal insect flight, muscle motion  

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

BioCAT BioCAT X-ray movies reveal insect flight, muscle motion Photo credit: Michael Dickinson Watching flies fly may not seem like high-tech science, but for researchers using the Western Hemisphere's most brilliant X-rays, from the Advanced Photon Source located at the U.S. Department of Energy's Argonne National Laboratory, it not only helps explain how insects fly but also may someday aid in understanding human heart function. The researchers, from the Illinois Institute of Technology (IIT), Caltech and the University of Vermont, merged two distinct technologies, intense X-ray beams and electronic flight simulators, to study how insect muscles can generate such extraordinary levels of power. The results are published in the the January 20,. 2005, issue of the journal Nature.

418

Historical Information H.6 SeismicIGround Motion Activity  

Office of Legacy Management (LM)

January 1973 January 1973 DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. This report was prepared as an amount of work sponsored by the United Energy Commission, nor any of their employees, nor any of their contractors, - subcontractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infringe privately owned rights. Available from the National Technical Information Service, U. S. Department of Commerce, Springfield, V A 2 2 1 5 1 - \ J STATISTICAL CORRELATION OF OBSERVED GROUND MOTION

419

Brownian motion in granular gases of viscoelastic particles  

Science Conference Proceedings (OSTI)

A theory is developed of Brownian motion in granular gases (systems of many macroscopic particles undergoing inelastic collisions), where the energy loss in inelastic collisions is determined by a restitution coefficient {epsilon}. Whereas previous studies used a simplified model with {epsilon} = const, the present analysis takes into account the dependence of the restitution coefficient on relative impact velocity. The granular temperature and the Brownian diffusion coefficient are calculated for a granular gas in the homogeneous cooling state and a gas driven by a thermostat force, and their variation with grain mass and size and the restitution coefficient is analyzed. Both equipartition principle and fluctuation-dissipation relations are found to break down. One manifestation of this behavior is a new phenomenon of 'relative heating' of Brownian particles at the expense of cooling of the ambient granular gas.

Bodrova, A. S., E-mail: bodrova@polly.phys.msu.ru; Brilliantov, N. V.; Loskutov, A. Yu. [Moscow State University (Russian Federation)

2009-12-15T23:59:59.000Z

420

Motion to Intervene_Department of Energy.DOC  

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

385.212 and 385.214 (2010), Central Hudson Gas & Electric Corporation, Consolidated Edison Company of New York, Inc., Long Island Power Authority, New York Power Authority, New...

Note: This page contains sample records for the topic "motion kinetic energy" 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

ERNSTMORITZARNDTUNIVERSITAT Absolute number density and kinetic analysis  

E-Print Network (OSTI)

plasma-chemical reactions. Therefore, from the analysis of their kinetics, one can learn more about of the technical applications, many plasma­chemical processes within the discharges as well as mechanisms determines all electron induced plasma-chemical processes and hence influences the kinetics of species

Greifswald, Ernst-Moritz-Arndt-Universität

422

Kinetics of Enzymatic Depolymerization of Guar Galactomannan  

E-Print Network (OSTI)

is used as a rheology modifier in many of its applications, previous kinetic studies have been limitedKinetics of Enzymatic Depolymerization of Guar Galactomannan Shamsheer Mahammad, Robert K. Prud'homme, George W. Roberts,*, and Saad A. Khan*, Department of Chemical and Biomolecular Engineering, North

Khan, Saad A.

423

Chemical kinetics and oil shale process design  

SciTech Connect

Oil shale processes are reviewed with the goal of showing how chemical kinetics influences the design and operation of different processes for different types of oil shale. Reaction kinetics are presented for organic pyrolysis, carbon combustion, carbonate decomposition, and sulfur and nitrogen reactions.

Burnham, A.K.

1993-07-01T23:59:59.000Z

424

Hubble Energy  

E-Print Network (OSTI)

Light received from a cosmological source is redshifted with an apparent loss of energy, a problem first pointed out by Edwin Hubble in 1936. A new type of energy called Hubble Energy is introduced to restore the principle of energy conservation. The energy has no inertial or gravitational effect but retards radial motion in a manner consistent with the anomalous acceleration experienced by the Pioneer probes leaving the solar system. The energy is predicted to have important effects on the scale of galaxies, and some of these effects are qualitatively examined: for example, with Hubble Energy, flat rotation curves are found to be an inevitable consequence of spiral galaxy formation. The Hubble Energy is incorporated into the Friedmann Equation and shown to add a term similar to the cosmological term, with a magnitude of order 10^-35 s^-2.

Alasdair Macleod

2004-03-25T23:59:59.000Z

425

System and method for generating motion corrected tomographic images  

DOE Patents (OSTI)

A method and related system for generating motion corrected tomographic images includes the steps of illuminating a region of interest (ROI) to be imaged being part of an unrestrained live subject and having at least three spaced apart optical markers thereon. Simultaneous images are acquired from a first and a second camera of the markers from different angles. Motion data comprising 3D position and orientation of the markers relative to an initial reference position is then calculated. Motion corrected tomographic data obtained from the ROI using the motion data is then obtained, where motion corrected tomographic images obtained therefrom.

Gleason, Shaun S. (Knoxville, TN); Goddard, Jr., James S. (Knoxville, TN)

2012-05-01T23:59:59.000Z

426

HIGH PRESSURE COAL COMBUSTON KINETICS PROJECT  

SciTech Connect

As part of the U.S. Department of Energy (DoE) initiative to improve the efficiency of coal-fired power plants and reduce the pollution generated by these facilities, DOE has funded the High-Pressure Coal Combustion Kinetics (HPCCK) Projects. A series of laboratory experiments were conducted on selected pulverized coals at elevated pressures with the specific goals to provide new data for pressurized coal combustion that will help extend to high pressure and validate models for burnout, pollutant formation, and generate samples of solid combustion products for analyses to fill crucial gaps in knowledge of char morphology and fly ash formation. Two series of high-pressure coal combustion experiments were performed using SRI's pressurized radiant coal flow reactor. The first series of tests characterized the near burner flame zone (NBFZ). Three coals were tested, two high volatile bituminous (Pittsburgh No.8 and Illinois No.6), and one sub-bituminous (Powder River Basin), at pressures of 1, 2, and 3 MPa (10, 20, and 30 atm). The second series of experiments, which covered high-pressure burnout (HPBO) conditions, utilized a range of substantially longer combustion residence times to produce char burnout levels from 50% to 100%. The same three coals were tested at 1, 2, and 3 MPa, as well as at 0.2 MPa. Tests were also conducted on Pittsburgh No.8 coal in CO2 entrainment gas at 0.2, 1, and 2 MPa to begin establishing a database of experiments relevant to carbon sequestration techniques. The HPBO test series included use of an impactor-type particle sampler to measure the particle size distribution of fly ash produced under complete burnout conditions. The collected data have been interpreted with the help of CFD and detailed kinetics simulation to extend and validate devolatilization, char combustion and pollutant model at elevated pressure. A global NOX production sub-model has been proposed. The submodel reproduces the performance of the detailed chemical reaction mechanism for the NBFZ tests.

Stefano Orsino

2005-03-30T23:59:59.000Z

427

Energy 101: Hydroelectric Power | Department of Energy  

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

Energy 101: Hydroelectric Power Energy 101: Hydroelectric Power Energy 101: Hydroelectric Power August 13, 2013 - 2:27pm Addthis Learn how hydroelectric power, or hydropower, captures the kinetic energy of flowing water and turns it into electricity for our homes and businesses. Humans have been using water to generate power for thousands of years. Hydroelectric power, or hydropower, captures the kinetic energy of flowing water and turns it into electricity, which is then fed into the electrical grid to be used in homes and businesses. This edition of Energy 101 shows how the Energy Department is supporting the development of new hydropower technologies to produce clean, renewable, and reliable power here in the United States. For more information on hydropower from the Office of Energy Efficiency and

428

High energy imploding liner experiment HEL-1: Experimental results  

SciTech Connect

Magnetically driven imploding liner systems can be used as a source of shock energy for materials equation of state studies, implosion driven magnetized plasma fusion experiments, and other similar applications. The imploding liner is a cylinder of conducting material through which a current is passed in the longitudinal direction. Interaction of the current with its own magnetic field causes the liner to implode. Sources of electrical energy for imploding liner systems are capacitor banks or explosive pulse power systems seeded by capacitor banks. In August, 1996, a high energy liner experiment (HEL-1) was conducted at the All-Russia Scientific Research Institute (VNIIEF) in Sarov, Russia. A 5 tier 1 meter diameter explosive disk generator provided electrical energy to drive a 48 cm outside diameter, 4 mm thick, aluminum alloy liner having a mass of about 11kg onto an 11 cm diameter diagnostic package. The purpose of the experiment was to measure performance of the explosive pulse power generator and the heavy imploding liner. Electrical performance diagnostics included inductive (B-dot) probes, Faraday Rotation current measurement, Rogowski total current measurement, and voltage probes. Flux loss and conductor motion diagnostics included current-joint voltage measurements and motion sensing contact pins. Optical and electrical impact pins, inductive (B-dot) probes, manganin pressure probes, and continuously recording resistance probes in the Central Measuring Unit (CMU) and Piezo and manganin pressure probes, optical beam breakers, and inductive probes located in the glide planes were used as liner symmetry and velocity diagnostics. Preliminary analysis of the data indicate that a peak current of more than 100 MA was attained and the liner velocity was between 6.7 km/sec and 7.5 km/sec. Liner kinetic energy was between 22 MJ and 35 MJ. 4 refs., 6 figs., 1 tab.

Clark, D.A.; Anderson, B.G.; Ekdahl, C.A. [and others

1997-09-01T23:59:59.000Z

429

Model simplification of chemical kinetic systems under uncertainty  

E-Print Network (OSTI)

This thesis investigates the impact of uncertainty on the reduction and simplification of chemical kinetics mechanisms. Chemical kinetics simulations of complex fuels are very computationally expensive, especially when ...

Coles, Thomas Michael Kyte

2011-01-01T23:59:59.000Z

430

Technology Transfer Success Stories, Energy  

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

Energy Energy Navigate Home About Us Contact Information Hide Thumbs First Previous Pause Next Last Set Speed Slideshow speed: 5 seconds Move Autoinduction system New Image Set Autoinduction Autoinduction System The award winning Overnight Express(tm) Autoinduction System developed at BNL simplifies protein production in the widely used T7 gene expression system. Decontamination Foam-based decontamination Foam-based decontamination, developed at INL and licensed to Environmental Alternatives, Inc. provides for non-destructive removal and decontamination of radionuclides from concrete and other surfaces. Motion to energy power generation system Motion to Energy Power Generation System Motion to energy power generation system, developed at INL with its licensee M2E Power, Inc., converts the power of motion into electrical

431

Ground motion characterization of the single shot in a mining blast array with the close-in seismic data  

SciTech Connect

Ground motion data from single, cylindrical explosions with the same source configuration as the individual explosions that make up a production mining blast array are analyzed. Strong shear motion is observed which can not be accounted for by the simple explosion source. Spall (the detachment and slap-down of the near surface strata and the separation of the burden and overburden from the continuum) accompanying the explosion seems to play an important role in shear wave energy generation. These shear energy may be the most damaging to the structures near the production site.

Yang, Xiaoning [Southern Methodist Univ., Dallas, TX (United States). Dept. of Geological Sciences; Stump, B.W. [Los Alamos National Lab., NM (United States)

1995-04-01T23:59:59.000Z

432

The equation of motion of an electron  

SciTech Connect

We review the current status of understanding of the equation of motion of an electron. Classically, a consistent, linearized theory exists for an electron of finite extent, as long as the size of the electron is larger than the classical electron radius. Nonrelativistic quantum mechanics seems to offer a fine theory even in the point particle limit. Although there is as yet no convincing calculation, it is probable that a quantum electrodynamical result will be at least as well-behaved as is the nonrelativistic quantum mechanical results. {copyright} {ital 1999 American Institute of Physics.}

Kim, K. [Argonne National Laboratory, Argonne, Illinois 60439 and The University of Chicago, Chicago, Illinois 60637 (United States); Sessler, A.M. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

1999-07-01T23:59:59.000Z

433

The equation of motion of an electron.  

SciTech Connect

We review the current status of understanding of the equation of motion of an electron. Classically, a consistent linearized theory exists for an electron of finite extent, as long as the size of the electron is larger than the classical electron radius. Nonrelativistic quantum mechanics seems to offer a fine theory even in the point particle limit. Although there is as yet no convincing calculation, it is probable that a quantum electrodynamical result will be at least as well-behaved as is the nonrelativistic quantum mechanical results.

Kim, K.-J.

1998-09-02T23:59:59.000Z

434

Error Reduction for Weigh-In-Motion  

Science Conference Proceedings (OSTI)

Federal and State agencies need certifiable vehicle weights for various applications, such as highway inspections, border security, check points, and port entries. ORNL weigh-in-motion (WIM) technology was previously unable to provide certifiable weights, due to natural oscillations, such as vehicle bouncing and rocking. Recent ORNL work demonstrated a novel filter to remove these oscillations. This work shows further filtering improvements to enable certifiable weight measurements (error < 0.1%) for a higher traffic volume with less effort (elimination of redundant weighing).

Hively, Lee M [ORNL; Abercrombie, Robert K [ORNL; Scudiere, Matthew B [ORNL; Sheldon, Frederick T [ORNL

2009-01-01T23:59:59.000Z

435

Kinetics of quasi-isoenergetic transition processes in biological macromolecules  

E-Print Network (OSTI)

A master equation describing the evolution of averaged molecular state occupancies in molecular systems where alternation of molecular energy levels is caused by discrete dichotomous and trichotomous stochastic fields, is derived. This study is focused on the kinetics of quasi-isoenergetic transition processes in the presence of moderately high frequency stochastic field. A novel physical mechanism for temperature-independent transitions in flexible molecular systems is proposed. This mechanism becomes effective when the conformation transitions between quasi-isoenergetic molecular states take place. At room temperatures, stochastic broadening of molecular energy levels predominates the energy of low frequency vibrations accompanying the transition. This leads to a cancellation of the temperature dependence in the stochastically averaged rate constants. As examples, physical interpretations of the temperature-independent onset of P2X$_3$ receptor desensitization in neuronal membranes, as well as degradation of PER2 protein in embrionic fibroblasts, are provided.

E. G. Petrov; V. I. Teslenko

2012-12-05T23:59:59.000Z

436

Modeling of Reactor Kinetics and Dynamics  

SciTech Connect

In order to model a full fuel cycle in a nuclear reactor, it is necessary to simulate the short time-scale kinetic behavior of the reactor as well as the long time-scale dynamics that occur with fuel burnup. The former is modeled using the point kinetics equations, while the latter is modeled by coupling fuel burnup equations with the kinetics equations. When the equations are solved simultaneously with a nonlinear equation solver, the end result is a code with the unique capability of modeling transients at any time during a fuel cycle.

Matthew Johnson; Scott Lucas; Pavel Tsvetkov

2010-09-01T23:59:59.000Z

437

Bio-butanol: Combustion properties and detailed chemical kinetic model  

Science Conference Proceedings (OSTI)

Autoignition delay time measurements were performed at equivalence ratios of 0.5, 1 and 2 for butan-1-ol at reflected shock pressures of 1, 2.6 and 8 atm at temperatures from 1100 to 1800 K. High-level ab initio calculations were used to determine enthalpies of formation and consequently bond dissociation energies for each bond in the alcohol. A detailed chemical kinetic model consisting of 1399 reactions involving 234 species was constructed and tested against the delay times and also against recent jet-stirred reactor speciation data with encouraging results. The importance of enol chemistry is highlighted. (author)

Black, G.; Curran, H.J.; Pichon, S.; Simmie, J.M.; Zhukov, V. [Combustion Chemistry Centre, National University of Ireland, Galway (Ireland)

2010-02-15T23:59:59.000Z

438

Absolute motion Galilean relativity (hence Einstein’s) not correct  

E-Print Network (OSTI)

The concept of relativity of motion was first introduced by Galileo. In his principle of invariance he stated that the laws of motion are the same in all inertial frames. He used the Galileo’s ship thought experiment in his argument, among other arguments. This principle of invariance was then modified by Einstein (special relativity), which included the speed of light to be invariant in all inertial frames. Therefore, the relativity theory we know today is based on Galileo’s principle of invariance. There is no sound argument yet in support of relativity of motion. Simply because an observer hasn’t been able to identify between illusion of motion and real motion cannot be taken as a sound argument to support relativity of motion. However, in the usual arguments of relativity of motion, to detect absolute motion is difficult. In this paper, a sound argument against Galileo’s principle of invariance will be presented, which will prove the notion of absolute motion to be correct and disprove relativity of motion, both Galileo’s and Einstein’s. Discussion Imagine two hypothetical identical solar systems in space, initially at rest relative to each other, separated by some distance, with an observer in each solar system. For simplicity, assume that each solar system has one sun and one planet only, the two solar systems do not affect each other, and that the planetary orbits are both circular.

Henok Tadesse; Electrical Engineer

2013-01-01T23:59:59.000Z

439

Lorentz transformations with arbitrary line of motion  

E-Print Network (OSTI)

Sometimes it becomes a matter of natural choice for an observer (A) that he prefers a coordinate system of two-dimensional spatial x-y coordinates from which he observes another observer (B) who is moving at a uniform speed along a line of motion, which is not collinear with As chosen x or y axis. It becomes necessary in such cases to develop Lorentz transformations where the line of motion is not aligned with either the x or the y-axis. In this paper we develop these transformations and show that under such transformations, two orthogonal systems (in their respective frames) appear non-orthogonal to each other. We also illustrate the usefulness of the transformation by applying it to three problems including the rod-slot problem. The derivation has been done before using vector algebra. Such derivations assume that the axes of K and K-prime are parallel. Our method uses matrix algebra and shows that the axes of K and K-prime do not remain parallel, and in fact K and K-prime which are properly orthogonal are observed to be non-orthogonal by K-prime and K respectively. http://www.iop.org/EJ/abstract/0143-0807/28/2/004

Chandru Iyer; G. M. Prabhu

2008-09-18T23:59:59.000Z

440

Energy  

Office of Legacy Management (LM)

..) ".. ..) ".. _,; ,' . ' , ,; Depar?.me.nt ,of.' Energy Washington; DC 20585 : . ' , - $$ o"\ ' ~' ,' DEC ?;$ ;y4,,, ~ ' .~ The Honorable John Kalwitz , 200 E. Wells Street Milwaukee, W~isconsin 53202, . . i :. Dear,Mayor 'Kalwitz: " . " Secretary of Energy Hazel' O'Leary has announceha new,approach 'to,openness in " the Department of Ene~rgy (DOE) and its communications with'the public. In -. support of~this initiative, we areipleased to forward the enclosed information related to the Milwaukee Ai.rport site in your jurisdiction that performed work, for DOE orits predecessor agencies. information; use, and retention. ., This information .is provided for your '/ ,' DOE's Formerly Utilized Sites Remedial:'Action~'Prog&is responsible for ,"'

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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
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441

Motion to Intervene and Comments of the City of Alexandria, Virginia |  

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

to Intervene and Comments of the City of Alexandria, to Intervene and Comments of the City of Alexandria, Virginia Motion to Intervene and Comments of the City of Alexandria, Virginia Docket No. EO-05-01: Pursuant to Section 214 of the Federal Energy Regulatory Commission's ("Commission") Rules of Practice and Procedure, 18 C.F.R. § 385.214, and the Notice of Filing issued in this proceeding on August 25, 2005, the City of Alexandria, Virginia ("Alexandria") moves to intervene and provides the following comments in this proceeding. Motion to Intervene and Comments of the City of Alexandria, Virginia More Documents & Publications Comments on Department of Energy's Emergency Order To Resume Limited Operation at Mirant's Potomac River Generating Station and Proposed Mirant Compliance Plan

442

Quantum Path Interference through Incoherent Motions in Multilevel Quantum Systems  

E-Print Network (OSTI)

The fluctuating incoherent environment in the condensed phase plays an important role in the dynamics and steady states of open quantum systems. The most fascinating aspect in open quantum systems is quantum coherence induced by path interference of incoherent motions. We propose a modified Ehrenfest scheme to study the path interference of incoherent motions in multi-level quantum systems. The detailed balance is enforced by considering the quantum correction of two-time correction functions based on second order master (rate) equations. With the modified Ehrenfest method, we can study the steady state populations and other quantum observables under different thermal dynamic conditions, such as energy relaxation and non-Markovian effects. For the three level system under incoherent coupling, we show how the steady state populations are influenced by the quantum path interference of incoherent fluctuations (Agarwal-Fano-like interference). We discuss the modified Ehrenfest method and its connection with stochastic Langevin equations and second order master equations. Most existing quantum MD simulation methods, particularly Master equation techniques, fall into the category of the weak coupling limit due to the nature of detailed balance. Although the modified Ehrenfest method is amicable to second-order master equations, it is actually a better way to model the quantum path interference since it preserves multi-time memory kernels. Therefore, it enables us to study the quantum path interference. This method can be used as quantum MD simulators for large open quantum systems like solar cell, (organic) LED, etc. The future extension of this method beyond the modified Ehrenfest scheme can be done with efficient wavepacket propagation methods by treating the bath modes in full quantum mechanical way.

Xin Chen

2013-05-17T23:59:59.000Z

443

Identification of intermittent multi-fractal turbulence in fully kinetic simulations of magnetic reconnection  

E-Print Network (OSTI)

Recent fully nonlinear, kinetic three-dimensional simulations of magnetic reconnection [Daughton et al. 2011] evolve structures and exhibit dynamics on multiple scales, in a manner reminiscent of turbulence. These simulations of reconnection are among the first to be performed at sufficient spatio-temporal resolution to allow formal quantitative analysis of statistical scaling which we present here. We find that the magnetic field fluctuations generated by reconnection are anisotropic, have non-trivial spatial correlation and exhibit the hallmarks of finite range fluid turbulence; they have non-Gaussian distributions, exhibit Extended Self-Similarity in their scaling and are spatially multifractal. Furthermore, we find that the field J.E is also multifractal, so that magnetic energy is converted to plasma kinetic energy in a manner that is spatially intermittent. This suggests that dissipation in this sense in collisionless reconnection on kinetic scales has an analogue in fluid-like turbulent phenomenology, ...

Leonardis, E; Daughton, W; Roytershteyn, V; Karimabadi, H

2013-01-01T23:59:59.000Z

444

Air Oxidation Kinetics for Zr-based Alloys [Corrosion and Mechanics of  

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

Air Oxidation Kinetics for Air Oxidation Kinetics for Zr-based Alloys Capabilities Materials Testing Environmentally Assisted Cracking (EAC) of Reactor Materials Corrosion Performance/Metal Dusting Overview Light Water Reactors Fatigue Testing of Carbon Steels and Low-Alloy Steels Environmentally Assisted Cracking of Ni-Base Alloys Irradiation-Induced Stress Corrosion Cracking of Austenitic Stainless Steels Steam Generator Tube Integrity Program Air Oxidation Kinetics for Zr-based Alloys Fossil Energy Fusion Energy Metal Dusting Publications List Irradiated Materials Steam Generator Tube Integrity Other Facilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Corrosion and Mechanics of Materials Light Water Reactors Bookmark and Share

445

A New Look at the Energy Cycle  

Science Conference Proceedings (OSTI)

The traditional derivation of the energy cycle is reviewed and some paradoxical properties of the energy conversion and flux terms under non-acceleration conditions (steady, conservative motion) are noted. An alternative scheme is derived, based ...

R. Alan Plumb

1983-07-01T23:59:59.000Z

446

An Exact Energy for TRM Theory  

Science Conference Proceedings (OSTI)

A time residual mean (TRM) energy is obtained by averaging a transformation of the energy of the Boussinesq hydrostatic incompressible equations of motion. The transformation is the fundamental TRM transformation between level Cartesian ...

Tivon Jacobson; Hidenori Aiki

2006-03-01T23:59:59.000Z

447

Kinetic description of rotating Tokamak plasmas with anisotropic temperatures in the collisionless regime  

SciTech Connect

A largely unsolved theoretical issue in controlled fusion research is the consistent kinetic treatment of slowly-time varying plasma states occurring in collisionless and magnetized axisymmetric plasmas. The phenomenology may include finite pressure anisotropies as well as strong toroidal and poloidal differential rotation, characteristic of Tokamak plasmas. Despite the fact that physical phenomena occurring in fusion plasmas depend fundamentally on the microscopic particle phase-space dynamics, their consistent kinetic treatment remains still essentially unchallenged to date. The goal of this paper is to address the problem within the framework of Vlasov-Maxwell description. The gyrokinetic treatment of charged particles dynamics is adopted for the construction of asymptotic solutions for the quasi-stationary species kinetic distribution functions. These are expressed in terms of the particle exact and adiabatic invariants. The theory relies on a perturbative approach, which permits to construct asymptotic analytical solutions of the Vlasov-Maxwell system. In this way, both diamagnetic and energy corrections are included consistently into the theory. In particular, by imposing suitable kinetic constraints, the existence of generalized bi-Maxwellian asymptotic kinetic equilibria is pointed out. The theory applies for toroidal rotation velocity of the order of the ion thermal speed. These solutions satisfy identically also the constraints imposed by the Maxwell equations, i.e., quasi-neutrality and Ampere's law. As a result, it is shown that, in the presence of nonuniform fluid and EM fields, these kinetic equilibria can sustain simultaneously toroidal differential rotation, quasi-stationary finite poloidal flows and temperature anisotropy.

Cremaschini, Claudio [International School for Advanced Studies (SISSA) and INFN, Trieste (Italy); Tessarotto, Massimo [Department of Mathematics and Informatics, University of Trieste (Italy)

2011-11-15T23:59:59.000Z

448

Energy growth in the compliant channel  

E-Print Network (OSTI)

Energy growth in the compliant channel Jérôme Hoepffner Julien Favier, Alessandro Bottaro #12 stiffness K Forcing by the pressure #12;Energy Flow energy+wall kinetic and potential energy: Energy: 2) Optimality: #12;"=0, stable #12;Optimization results Growth enveloppe Energy evolution

Hoepffner, Jérôme

449

A general kinetic model: Kinetics and atomic-scale mechanisms of feldspar dissolution.  

E-Print Network (OSTI)

??This thesis presents a general kinetic model and its application to feldspar dissolution. In the framework of Monte Carlo methods, the model simulates the stochastic… (more)

Zhang, Li

2008-01-01T23:59:59.000Z

450

The Multiplexed Chemical Kinetic Photoionization Mass Spectrometer: A New Approach To Isomer-resolved Chemical Kinetics  

E-Print Network (OSTI)

instruments applied to analysis of complex chemical mixturesrelies on chemical separation (by chromatography) into pureThe multiplexed chemical kinetic photoionization mass

Osborne, David L.

2009-01-01T23:59:59.000Z

451

Constructive Methods of Invariant Manifolds for Kinetic Problems  

E-Print Network (OSTI)

We present the Constructive Methods of Invariant Manifolds for model reduction in physical and chemical kinetics, developed during last two decades. The problem of reduced description is studied as a problem of constructing the slow invariant manifold. The invariance conditions are formulated as the differential equation for a manifold immersed in the phase space (the invariance equation). The equation of motion for immersed manifolds is obtained (the film extension of the dynamics). Invariant manifolds are fixed points for this equation, and slow invariant manifolds are Lyapunov stable fixed points, thus slowness is presented as stability. A collection of methods for construction of slow invariant manifolds is presented, in particular the analogue of KAM methods for dissipative systems. We systematically consider a discrete analogue of the slow (stable) positively invariant manifolds for dissipative systems, invariant grids. The following examples of applications are presented: Nonperturbative deviation of physically consistent hydrodynamics from the Boltzmann equation and from the reversible dynamics, for Knudsen numbers ~ 1; construction of the moment equations for nonequilibrium media and their dynamical correction (instead of extension of list of variables) to gain more accuracy in description of highly nonequilibrium flows; invariant grids for chemical reactions; universal continuous media description of dilute polymeric solution, etc.

A. N. Gorban; I. V. Karlin; A. Yu. Zinovyev

2003-11-02T23:59:59.000Z

452

Plasma transport induced by kinetic Alfven wave turbulence  

SciTech Connect

At the Earth's magnetopause that separates the hot-tenuous magnetospheric plasma from the cold dense solar wind plasma, often seen is a boundary layer where plasmas of both origins coexist. Plasma diffusions of various forms have been considered as the cause of this plasma mixing. Here, we investigate the plasma transport induced by wave-particle interaction in kinetic Alfven wave (KAW) turbulence, which is one of the candidate processes. We clarify that the physical origin of the KAW-induced cross-field diffusion is the drift motions of those particles that are in Cerenkov resonance with the wave: E Multiplication-Sign B-like drift that emerges in the presence of non-zero parallel electric field component and grad-B drift due to compressional magnetic fluctuations. We find that KAW turbulence, which has a spectral breakpoint at which an MHD inertial range transits to a dissipation range, causes selective transport for particles whose parallel velocities are specified by the local Alfven velocity and the parallel phase velocity at the spectral breakpoint. This finding leads us to propose a new data analysis method for identifying whether or not a mixed plasma in the boundary layer is a consequence of KAW-induced transport across the magnetopause. The method refers to the velocity space distribution function data obtained by a spacecraft that performs in situ observations and, in principle, is applicable to currently available dataset such as that provided by the NASA's THEMIS mission.

Izutsu, T. [Department of Earth and Planetary Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 133-0033 (Japan); Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan); Hasegawa, H.; Fujimoto, M. [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan); Nakamura, T. K. M. [X-Computational Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

2012-10-15T23:59:59.000Z

453

Predicting Merger-Induced Gas Motions in LCDM Galaxy Clusters  

E-Print Network (OSTI)

In the hierarchical structure formation model, clusters of galaxies form through a sequence of mergers and continuous mass accretion, which generate significant random gas motions especially in their outskirts where material is actively accreting. Non-thermal pressure provided by the internal gas motions affects the thermodynamic structure of the X-ray emitting intracluster plasma and introduces biases in the physical interpretation of X-ray and Sunyaev-Zeldovich effect observations. However, we know very little about the nature of gas motions in galaxy clusters. The ASTRO-H X-ray mission, scheduled to launch in 2015, will have a calorimeter capable of measuring gas motions in galaxy clusters at the level of gas motions expected in the LCDM model using hydrodynamical simulations of galaxy cluster formation, focusing on the merger-induced gas motions. We show that the gas velocity dispersion is larger in more massive clusters, but exhibits large ...

Nagai, Daisuke; Avestruz, Camille; Nelson, Kaylea; Rudd, Douglas H

2013-01-01T23:59:59.000Z

454

EI0534_Techniken des Energy Harvesting_110608.xls Allgemeine Daten  

E-Print Network (OSTI)

Vibration energy harvesting from random force and motion excitations This article has been) 075025 (9pp) doi:10.1088/0964-1726/21/7/075025 Vibration energy harvesting from random force and motion A vibration energy harvester is typically composed of a spring­mass system with an electromagnetic

Kuehnlenz, Kolja

455

Energy 101: Marine and Hydrokinetic Energy | Department of Energy  

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

Marine and Hydrokinetic Energy Marine and Hydrokinetic Energy Energy 101: Marine and Hydrokinetic Energy Addthis Below is the text version for the Energy 101: Marine & Hydrokinetic Energy video. The words "Energy 101: Marine & Hydrokinetic Energy" appear onscreen. Montage of renewable energy technologies ending with shots of ocean waves. We all know energy can come from the wind and the sun, but there's a plentiful renewable resource covering more than 75% of the planet that you might not have thought about: our water! The movement of the ocean's waves, tides, and currents carries energy that can be harnessed and converted into electricity to power our homes, buildings and cities. The words "Kinetic Energy" appear onscreen with shots of ocean scientists at sea. The words "Marine & Hydrokinetic" appear onscreen.

456

Waste Management | Department of Energy  

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

to Withdraw Yucca Mountain License Application WASHINGTON, D.C. - The U.S. Department of Energy today filed a motion with the Nuclear Regulatory Commission to withdraw the license...

457

Yucca Mountain - U.S. Department of Energy's Response to the...  

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

Response to the Motion for RecusalDisqualification Yucca Mountain - U.S. Department of Energy's Response to the Motion for RecusalDisqualification Brief filed before the Nuclear...

458

3D Arm Motion Tracking for Home-based Rehabilitation  

E-Print Network (OSTI)

Chapter 13 3D Arm Motion Tracking for Home-based Rehabilitation Y. Tao and H. Hu 13.1 Introduction This paper presents a real-time hybrid solution to articulated 3D arm motion tracking for home-based of articulated objects, e.g., human upper limbs. The purpose is to develop a 3D motion tracking model for home-based

Hu, Huosheng

459

Isopiestic Kinetics of Pd/C/DPB Composite: Temperature Dependence  

DOE Green Energy (OSTI)

In 2007, a continuation of experiments studying the uptake kinetics of a DPB getter material was conducted. In these experiments, a powder formed from ground pellets of DPB getter as currently deployed was subject to multiple hydrogenations in an isopiestic hydrogen reactor. The objective was to observe the reaction kinetics of the powdered material as a function of ambient hydrogen pressure at room temperature, with the intention of resolving key issues of the DPB reaction mechanism that could relate to its aging and capacity characteristics. The results indicated, in agreement with work performed in 2006 as part of the same project, that the likely mechanism of DPB/Hydrogen reaction occurs via the diffusion of unreacted DPB toward the catalyst surface. They also demonstrated that at a sufficiently high pressure (on the order of a few torr) of hydrogen, the reaction was vigorous enough to release sufficient heat to vaporize both the DPB getter and its hydrogenate away from the surface of the Pd catalyst at which the reaction takes place. The consequence was a premature slowing of the reaction kinetics and a drop in overall capacity. In the present work, the isopiestic reaction scheme is expanded to study the dependence of the reaction rate of this material on both hydrogen pressure and temperature. The dependence of the reaction rate on both temperature and pressure can provide both valuable clues about the reaction mechanism, as well as the activation energy of the principal reaction. The activation energy is an especially important term for purposes of doing lifetime predictions for getters under conditions of varying temperature.

Dinh, L N; Meulenberg, R; Saab, A P

2009-05-27T23:59:59.000Z

460

Processed seismic motion records from earthquakes (1982--1993): Recorded at Scotty`s Castle, California  

SciTech Connect

As part of the contract with the US Department of Energy, Nevada Operations Office (DOE/NV), URS/John A. Blume & Associates, Engineers (URS/Blume) maintained a network of seismographs to monitor the ground motion generated by the underground nuclear explosions (UNEs) at the Nevada Test Site (NTS). The seismographs were located in the communities surrounding the NTS and the Las Vegas valley. When these seismographs were not used for monitoring the UNE generated motions, a limited number of seismographs were maintained for monitoring motion generated by other than UNEs (e.g. motion generated by earthquakes, wind, blast). Scotty`s Castle was one of the selected earthquake monitoring station. During the period from 1982 through 1993, numerous earthquakes with varied in magnitudes and distances were recorded at Scotty`s Castle. The records from 24 earthquakes were processed and included in this report. Tables 1 and 2 lists the processed earthquakes in chronological order and in the order of epicentral distances, respectively. Figure 1 shows these epicenters and magnitudes. Due to the potential benefit of these data for the scientific community, DOE/NV and the National Park Service authorize the release of these records.

Lum, P.K.; Honda, K.K.

1993-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" 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

Potomac Electric Power Company's Motion to Intervene and Comment...  

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

to Intervene and Comment in Support of Emergency Petition and Complaint Potomac Electric Power Company's Motion to Intervene and Comment in Support of Emergency Petition and...

462

Experimental investigations of lip motion in brass instrument playing.  

E-Print Network (OSTI)

??The precise nature of the motion of the lips of the musician is critically important to the sound of the brass wind instrument. The player… (more)

Stevenson, Samuel D. F.

2009-01-01T23:59:59.000Z

463

Joint Motion to Intervene of Northern States Power Company (Minnesota...  

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

States Power Company (Minnesota) et al. on the Proposed Open Access Requirements Joint Motion to Intervene of Northern States Power Company (Minnesota) et al. on the...

464

Effects of gravity on capillary motion of fluid  

Science Conference Proceedings (OSTI)

A new experimental approach provides good visualization of the fluid capillary motion along the rectangular groove corners. A hydrodynamically controlled rewetting model

S. H. Chan; T. R. Shen; G. D. Proffitt; B. Singh

1998-01-01T23:59:59.000Z

465

Transformation of the equatorial proper motion to the Galactic system  

E-Print Network (OSTI)

I present simple analytical equations to transform proper motion vectors from equatorial to Galactic coordinates. These equations do not appear in the literature.

Poleski, Rados?aw

2013-01-01T23:59:59.000Z

466

Free motion in deformed (quantum) four-dimensional space  

E-Print Network (OSTI)

It is shown that trajectories of free motion of the particles in deformed ("quantum") four dimensional space-time are quadratic curves.

A. N. Leznov

2007-07-23T23:59:59.000Z

467

Wall and laser spot motion in cylindrical hohlraums  

Science Conference Proceedings (OSTI)

Wall and laser spot motion measurements in empty, propane-filled and plastic (CH)-lined gold coated cylindrical hohlraums were performed on the Omega laser facility [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)]. Wall motion was measured using axial two-dimensional (2D) x-ray imaging and laser spot motion was perpendicularly observed through a thinned wall using streaked hard x-ray imaging. Experimental results and 2D hydrodynamic simulations show that while empty targets exhibit on-axis plasma collision, CH-lined and propane-filled targets inhibit wall expansion, corroborated with perpendicular streaked imaging showing a slower motion of laser spots.

Huser, G.; Courtois, C.; Monteil, M.-C. [CEA, DAM, DIF, F-91297 Arpajon (France)

2009-03-15T23:59:59.000Z

468

The folding kinetics of ribonuclease Sa and a charge-reversal variant  

E-Print Network (OSTI)

The primary objective was to study the kinetics of folding of RNase Sa. Wild-type RNase Sa does not contain tryptophan. A tryptophan was substituted at residue 81 (WT*) to allow fluorescence spectroscopy to be used to monitor folding. This tryptophan mutation did not change the stability. An analysis of the folding kinetics of RNase Sa showed two folding phases, indicating the presence of an intermediate and consistent with the following mechanism: D ? I ? N. Both refolding limbs of the chevron plot (abcissa = final conc. of denaturant and ordinate = kinetic rate) had non-zero slopes suggesting that proline isomerization was not rate-limiting. The conformational stability of a charge-reversed variant, WT*(D17R), of a surface exposed residue on RNase Sa has been studied by equilibrium techniques. This mutant with a single amino acid charge reversal of a surface exposed residue resulted in decreased stability. Calculations using Coulomb?s Law suggested that favorable electrostatic interactions in the denatured state were the cause for the decreased stability for the charge-reversed variant. Folding and unfolding kinetic studies were designed and conducted to study the charge-reversal effect. Unfolding kinetics showed a 10-fold increase in the unfolding rate constant for WT*(D17R) over WT* and no difference in the rate of refolding. Kinetics experiments were also conducted at pH 3 where protonation of Asp17 (charge reversal site) would be expected to negate the observed kinetic effect. At pH 3 the kinetics of unfolding of WT* RNase Sa and the WT*(D17R) mutant were more similar. These kinetic results indicate that a single-site charge reversal lowered the free energy of the denatured state as suspected. Additionally, the results showed that the transition state was stabilized as well. These results show that a specific Coulombic interaction lowered the free energy in the denatured and transition state of the charge-reversal mutant, more than in WT*. To our knowledge, this is the first demonstration that a favorable electrostatic interaction in the denatured state ensemble has been shown to influence the unfolding kinetics of a protein.

Trefethen, Jared M.

2004-12-01T23:59:59.000Z

469

On a scale invariant model of statistical mechanics and the kinetic theory of ideal gas  

Science Conference Proceedings (OSTI)

A scale invariant model of statistical mechanics is applied to derive invariant Maxwell-Boltzmann speed and Planck energy spectrum of equilibrium statistical fields including that of isotropic stationary turbulence. The latter is shown to lead to the ... Keywords: Riemann hypothesis, TOE, kinetic theory of ideal gas, statistical mechanics, thermodynamics

Siavash H. Sohrab

2011-04-01T23:59:59.000Z

470

Kinetic phenomena in charged particle transport in gases and plasmas  

SciTech Connect

The key difference between equilibrium (thermal) and non-equilibrium (low temperature - a.k.a. cold) plasmas is in the degree in which the shape of the cross sections influences the electron energy distribution function (EEDF). In this paper we will discuss the issue of kinetic phenomena from two different angles. The first will be how to take advantage of the strong influence and use low current data to obtain the cross sections. This is also known as the swarm technique and the product of a ''swarm analysis'' is a set of cross sections giving good number, momentum and energy balances of electrons or other charged particles. At the same time understanding the EEDF is based on the cross section data. Nevertheless sometimes the knowledge of the cross sections and even the behaviour of individual particles are insufficient to explain collective behaviour of the ensemble. The resulting ''kinetic'' effects may be used to favour certain properties of non-equilibrium plasmas and even may be used as the basis of some new plasma applications.

Petrovic, Zoran Lj.; Dujko, Sasa; Sasic, Olivera; Stojanovic, Vladimir; Malovic, Gordana [Institute of Physics, University of Belgrade, POB 68 11080 Zemun (Serbia); Faculty of Traffic Engineering, University of Belgrade Belgrade (Serbia); Institute of Physics, University of Belgrade, POB 68 11080 Zemun (Serbia)

2012-05-25T23:59:59.000Z

471

On the Energy Input from Wind to Surface Waves  

Science Conference Proceedings (OSTI)

A basic model relating the energy dissipation in the ocean mixed layer to the energy input into the surface wave field is combined with recent measurements of turbulent kinetic energy dissipation to determine the average phase speed of the waves ...

J. R. Gemmrich; T. D. Mudge; V. D. Polonichko

1994-11-01T23:59:59.000Z

472

Oscillation Energies of Colliding Raindrops  

Science Conference Proceedings (OSTI)

When raindrops collide, some of the kinetic energy involved in the collision will be available to initiate or sustain oscillations in the surviving drops. This paper presents results of a simple model of drop collisions that generates an estimate ...

David B. Johnson; Kenneth V. Beard

1984-04-01T23:59:59.000Z

473

Consistent description of kinetic equation with triangle anomaly  

SciTech Connect

We provide a consistent description of the kinetic equation with a triangle anomaly which is compatible with the entropy principle of the second law of thermodynamics and the charge/energy-momentum conservation equations. In general an anomalous source term is necessary to ensure that the equations for the charge and energy-momentum conservation are satisfied and that the correction terms of distribution functions are compatible to these equations. The constraining equations from the entropy principle are derived for the anomaly-induced leading order corrections to the particle distribution functions. The correction terms can be determined for the minimum number of unknown coefficients in one charge and two charge cases by solving the constraining equations.

Pu Shi; Gao Jianhua; Wang Qun [Interdisciplinary Center for Theoretical Study and Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)

2011-05-01T23:59:59.000Z

474

Mesoscale Energy Spectra of the Mei-Yu Front System. Part II: Moist Available Potential Energy Spectra  

Science Conference Proceedings (OSTI)

In Part II of this study, a new formulation of the spectral energy budget of moist available potential energy (MAPE) and kinetic energy is derived. Compared to previous formulations, there are three main improvements: i) the Lorenz available ...

Jun Peng; Lifeng Zhang; Yu Luo; Chunhui Xiong

475

Energy harvesting of random wide-band vibrations with applications to an electro-magnetic rotational energy harvester  

E-Print Network (OSTI)

In general, vibration energy harvesting is the scavenging of ambient vibration by transduction of mechanical kinetic energy into electrical energy. Many mechanical or electro-mechanical systems produce mechanical vibrations. ...

Trimble, A. Zachary

2011-01-01T23:59:59.000Z

476

Multiple temperature kinetic model and gas-kinetic method for hypersonic non-equilibrium flow computations  

Science Conference Proceedings (OSTI)

It is well known that for increasingly rarefied flowfields, the predictions from continuum formulation, such as the Navier-Stokes equations lose accuracy. For the high speed diatomic molecular flow in the transitional regime, the inaccuracies are partially ... Keywords: Gas-kinetic method, Hypersonic and rarefied flows, Multiple temperature kinetic model

Kun Xu; Xin He; Chunpei Cai

2008-07-01T23:59:59.000Z

477

How the Smart Grid Helps Homeowners Reduce Their Energy Use ...  

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

National Science Bowl 2013 National Science Bowl 2013 President Obama Visits the Energy Department Four Years of Leadership with Secretary Chu The Technology Showcase: AC Kinetics...

478

LED Lighting on the National Mall | Department of Energy  

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

National Science Bowl 2013 National Science Bowl 2013 President Obama Visits the Energy Department Four Years of Leadership with Secretary Chu The Technology Showcase: AC Kinetics...

479

Categorical Exclusion Determinations: B3.6 | Department of Energy  

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

February 9, 2010 CX-000760: Categorical Exclusion Determination Amber Kinetics Flywheel Energy Storage Demonstration CX(s) Applied: B3.6 Date: 02092010 Location(s):...

480

Cooperative motions in supercooled liquids and glasses  

E-Print Network (OSTI)

method[167, 168, 169] (WHAM). The resulting free energy pro?in ?gure 5.4a. Us- ing WHAM and the library construction

Stevenson, Jacob D.

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motion kinetic energy" from the National Library of EnergyBeta (NLEBeta).
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481

Statistics of energy partitions for many-particle systems in arbitrary dimension  

E-Print Network (OSTI)

In some previous articles, we defined several partitions of the total kinetic energy T of a system of N classical particles in the d-dimensional Euclidean space into components corresponding to various modes of motion. In the present paper, we propose formulas for the mean values of these components in the normalization T=1 (for any d and N) under the assumption that the masses of all the particles are equal. These formulas are proven at the "physical level" of rigor and numerically confirmed for planar systems (d=2) at N from 3 through 100. The case where the masses of the particles are chosen at random is also considered. The paper complements our article of 2008 [Russian J Phys Chem B, 2(6), 947-963] where similar numerical experiments were carried out for spatial systems (d=3) at N from 3 through 100.

Vincenzo Aquilanti; Andrea Lombardi; Mikhail B. Sevryuk

2013-01-11T23:59:59.000Z

482

Investigation of Coal-biomass Catalytic Gasification using Experiments, Reaction Kinetics, and Computational Fluid Dynamics  

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

Coal-biomass Catalytic Coal-biomass Catalytic Gasification using Experiments, Reaction Kinetics, and Computational Fluid Dynamics Background The U.S. Department of Energy (DOE) supports research and development efforts targeted to improve efficiency and reduce the negative environmental effects of the use of fossil fuels. One way to achieve these goals is to combine coal with biomass to create synthesis gas (syngas) for use in turbines and refineries to produce energy, fuels,

483

Chemical Kinetic Modeling of Advanced Transportation Fuels  

DOE Green Energy (OSTI)

Development of detailed chemical kinetic models for advanced petroleum-based and nonpetroleum based fuels is a difficult challenge because of the hundreds to thousands of different components in these fuels and because some of these fuels contain components that have not been considered in the past. It is important to develop detailed chemical kinetic models for these fuels since the models can be put into engine simulation codes used for optimizing engine design for maximum efficiency and minimal pollutant emissions. For example, these chemistry-enabled engine codes can be used to optimize combustion chamber shape and fuel injection timing. They also allow insight into how the composition of advanced petroleum-based and non-petroleum based fuels affect engine performance characteristics. Additionally, chemical kinetic models can be used separately to interpret important in-cylinder experimental data and gain insight into advanced engine combustion processes such as HCCI and lean burn engines. The objectives are: (1) Develop detailed chemical kinetic reaction models for components of advanced petroleum-based and non-petroleum based fuels. These fuels models include components from vegetable-oil-derived biodiesel, oil-sand derived fuel, alcohol fuels and other advanced bio-based and alternative fuels. (2) Develop detailed chemical kinetic reaction models for mixtures of non-petroleum and petroleum-based components to represent real fuels and lead to efficient reduced combustion models needed for engine modeling codes. (3) Characterize the role of fuel composition on efficiency and pollutant emissions from practical automotive engines.

PItz, W J; Westbrook, C K; Herbinet, O

2009-01-20T23:59:59.000Z

484

Structural characterization and dehydration kinetics of Kirka inderite mineral: Application of non-isothermal models  

SciTech Connect

Coats-Redfern, Arrhenius, Ozawa, Kissinger, and Doyle non-isothermal kinetic models were used to calculate the dynamic kinetic parameters for dehydration reaction of Mg-borate mineral, inderite (Kirka - Turkey) based on thermogravimetric analysis, derivative thermogravimetric analysis and differential thermal analysis. Dehydration experiments were carried out at different heating rates of 2, 5, 10, 15, and 20 deg. C/min in a pure nitrogen atmosphere. Structural and morphological properties have been characterized by X-Ray diffraction, Fourier transform-infrared spectroscopy, Scanning electron microscopy-energy dispersive spectroscopy, and Inductively coupled plasma-optical emission spectroscopy techniques.

Figen, Aysel Kantuerk, E-mail: akanturk@yildiz.edu.tr [Yildiz Technical University, Department of Chemical Engineering, Davutpasa Campus., N.127, Esenler, Istanbul (Turkey); Yilmaz, Muege Sari, E-mail: mugesari@yildiz.edu.tr [Yildiz Technical University, Department of Chemical Engineering, Davutpasa Campus., N.127, Esenler, Istanbul (Turkey); Piskin, Sabriye, E-mail: piskin@yildiz.edu.tr [Yildiz Technical University, Department of Chemical Engineering, Davutpasa Campus., N.127, Esenler, Istanbul (Turkey)

2010-06-15T23:59:59.000Z

485

Kinetics of decomposition of Colorado oil shale. I. Oil generation. [Use of isothermal and nonisothermal methods  

DOE Green Energy (OSTI)

Isothermal and nonisothermal methods were used to investigate the kinetics of oil generation during decomposition of 91.7 l/tonne (22-gal/ton) Colorado oil shale. The average of the results from these two methods gives an activation energy of 52.0 kcal/mole and a frequency factor of 3 x 10/sup 13/s/sup -1/. The process is found to be first order to within experimental error. These results compare favorably with data reported in the literature. The reliability and ease of carrying out nonisothermal kinetic experiments to study solid decomposition reactions is demonstrated. Moreover, nonisothermal experiments more accurately simulate actual in situ processing conditions.

Campbell, J.H.; Koskinas, G.; Stout, N.

1976-06-25T23:59:59.000Z

486

Ground Motion Studies at NuMI  

Science Conference Proceedings (OSTI)

Ground motion can cause significant deterioration in the luminosity of a linear collider. Vibration of numerous focusing magnets causes continuous misalignments, which makes the beam emittance grow. For this reason, understanding the seismic vibration of all potential LC sites is essential and related efforts in many sites are ongoing. In this document we summarize the results from the studies specific to Fermilab grounds as requested by the LC project leader at FNAL, Shekhar Mishra in FY04-FY06. The Northwestern group focused on how the ground motion effects vary with depth. Knowledge of depth dependence of the seismic activity is needed in order to decide how deep the LC tunnel should be at sites like Fermilab. The measurements were made in the NuMI tunnel, see Figure 1. We take advantage of the fact that from the beginning to the end of the tunnel there is a height difference of about 350 ft and that there are about five different types of dolomite layers. The support received allowed to pay for three months of salary of Michal Szleper. During this period he worked a 100% of his time in this project. That include one week of preparation: 2.5 months of data taking and data analysis during the full period of the project in order to guarantee that we were recording high quality data. We extended our previous work and made more systematic measurements, which included detailed studies on stability of the vibration amplitudes at different depths over long periods of time. As a consequence, a better control and more efficient averaging out of the daytime variation effects were possible, and a better study of other time dependences before the actual depth dependence was obtained. Those initial measurements were made at the surface and are summarized in Figure 2. All measurements are made with equipment that we already had (two broadband seismometers KS200 from GEOTECH and DL-24 portable data recorder). The offline data analysis took advantage of the full Fourier spectra information and the noise was properly subtracted. The basic formalism is summarized if Figure 3. The second objective was to make a measurement deeper under ground (Target hall, Absorber hall and Minos hall - 150 ft to 350 ft), which previous studies did not cover. All results are summarized in Figure 3 and 4. The measurements were covering a frequency range between 0.1 to 50 Hz. The data was taken continuously for at least a period of two weeks in each of the locations. We concluded that the dependence on depth is weak, if any, for frequencies above 1 Hz and not visible at all at lower frequencies. Most of the attenuation (factor of about 2-3) and damping of ground motion that is due to cultural activity at the surface is not detectable once we are below 150 ft underground. Therefore, accelerator currently under consideration can be build at the depth and there is no need to go deeper underground is built at Fermi National Laboratory.

Mayda M. Velasco; Michal Szleper

2012-02-20T23:59:59.000Z

487

Interpreting motion events of pairs of moving objects  

Science Conference Proceedings (OSTI)

When accumulating large quantities of positional data with ubiquitous positioning techniques, methods are required that can efficiently make use of these data. This work proposes a representation that approximates motion events of pairs of objects. It ... Keywords: Change in direction, Motion events/patterns, Spatiotemporal reasoning

Björn Gottfried

2011-04-01T23:59:59.000Z

488

Investigation on Virtual Assembly and Motion Simulation of Scroll Compressor  

Science Conference Proceedings (OSTI)

It is efficient and economic to excogitate new product of a scroll compressor by means of virtual design. It accords with development and requirement of scroll compressors products currently. Virtual assembly and motion simulation is important process ... Keywords: scroll compressor, virtual assembly, assembly scheme, motion simulation

Haisheng Li; Yinghua Chen

2010-11-01T23:59:59.000Z