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1

Digital field trip to the Central Nevada Thrust Belt  

SciTech Connect

Hydrocarbon exploration in the Central Nevada Thrust Belt is still in its infancy. However, this thrust belt contains all the elements necessary for hydrocarbon accumulations: thick, organically-rich shales; reefs, regional unconformities, karst surfaces, porous sandstones, and extensive and pervasive fractures; anticlines tens of miles long by miles wide; thrust faults that juxtapose potential source and reservoir rocks; and oil seeps. Along a fairway from Las Vegas to Elko, for example, thick Mississippian shales contain 4-6% total organic carbon and are oil-prone and thermally mature. This presentation from a laptop computer and LCD projector is a multimedia version of our October 12-14, 1995 field trip to document the hydrocarbon potential of the thrust belt in Clark, Lincoln, and Nye Counties. Outcrop images were recorded by a digital camera that has a resolution equivalent to a 14 inch computer screen; these images were then downloaded to the computer. All of the images were processed digitally on location to enhance picture quality and color contrast. Many were annotated on location with our observations, measurements, and interpretations. These field annotations are supplemented in this presentation by laboratory analyses. The presentation includes full-color, annotated outcrop images, sounds, and animations. The results show the viability of the new, inexpensive digital cameras to geologic field work in which a multimedia report, ready for presentation to management, can be generated in the field.

Chamberlain, A.K. (Cedar Strat Corp., Hiko, NV (United States)); Hook, S.C. (Texaco E P Technology Department, Houston, TX (United States)); Frost, K.R. (Texaco Exploration and Production, Inc., Houston, TX (United States))

1996-01-01T23:59:59.000Z

2

San Juan Montana Thrust Belt WY Thrust Belt Black Warrior  

U.S. Energy Information Administration (EIA) Indexed Site

San San Juan Montana Thrust Belt WY Thrust Belt Black Warrior Paradox - San Juan NW (2) Uinta- Piceance Paradox - San Juan SE (2) Florida Peninsula Appalachian- NY (1) Appalachian OH-PA (2) Appalachian Eastern PA (3) Appalachian Southern OH (4) Appalachian Eastern WV (5) Appalachian WV-VA (6) Appalachian TN-KY (7) Piceance Greater Green River Eastern OR-WA Ventura Williston Williston NE (2) Williston NW (1) Williston South (3) Eastern Great Basin Ventura West, Central, East Eastern OR-WA Eastern Great Basin Appalachian Denver Florida Peninsula Black Warrior W Y T h ru st B e lt Powder River Paradox- Uinta- Grtr Green River MT Thrust Belt Powder River North (1) Powder River South (2) Denver North (1) Denver South (3) Denver Middle (2) TX CA MT AZ ID NV NM CO IL OR UT KS WY IA NE SD MN ND OK FL WI MO AL WA GA AR LA MI IN PA NY NC MS TN KY VA OH SC

3

Geomorphometric features and tectonic activities in sub-Himalayan thrust belt, Pakistan, from satellite data  

Science Conference Proceedings (OSTI)

The sub-Himalayan thrust belt is an active thrust wedge which progresses southward over the north-dipping Indian plate. The north-south compression resulted in severe deformation of sedimentary rocks in this belt. Distinct thrust geometries and topography ... Keywords: DEM, Himayayas, Landsat ETM+, Tectonics, Topography

Lize Chen; Shuhab D. Khan

2009-10-01T23:59:59.000Z

4

Late Cretaceous extension in the hinterland of the Sevier thrust belt,  

Open Energy Info (EERE)

Late Cretaceous extension in the hinterland of the Sevier thrust belt, Late Cretaceous extension in the hinterland of the Sevier thrust belt, northwestern Utah and southern Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Late Cretaceous extension in the hinterland of the Sevier thrust belt, northwestern Utah and southern Idaho Details Activities (1) Areas (1) Regions (0) Abstract: Cover rocks of the Raft River metamorphic core complex, located in the Sevier belt hinterland, preserve a structural and metamorphic history that predates the middle Tertiary extension of the region. In the eastern Raft River Mountains, Cambrian-Permian rocks form two allochthons that occur in the hanging wall of the mid-Miocene Raft River detachment fault. Dramatically attenuated, metamorphosed Cambrian-Pennsylvanian strata

5

Thermal and Structural Constraints on the Tectonic Evolution of the Idaho-Wyoming-Utah Thrust Belt  

E-Print Network (OSTI)

The timing of motion on thrust faults in the Idaho-Wyoming-Utah (IWU) thrust belt comes from synorogenic sediments, apatite thermochronology and direct dating of fault rocks coupled with good geometrical constraints of the subsurface structure. The thermal history comes from the analyses of apatite thermochronology, thermal maturation of hydrocarbon source rocks and isotope analysis of fluid inclusions from syntectonic veins. New information from zircon fission track and zircon (U-Th)/He analysis provide constraints on the thermal evolution of the IWU thrust belt over geological time. These analyses demonstrate that the time-temperature pathway of the rocks sampled never reached the required conditions to reset the thermochronometers necessary to provide new timing constraints. Previous thermal constraints for maximum temperatures of IWU thrust belt rocks, place the lower limit at ~110°C and the upper limit at ~328°C. New zircon fission track results suggest an upper limit at ~180°C for million year time scales. ID-TIMS and LA-ICPMS of syntectonic calcite veins suggest that new techniques for dating times of active deformation are viable given that radiogenic isotope concentrations occur at sufficient levels within the vein material.

Chapman, Shay Michael

2013-08-01T23:59:59.000Z

6

Faulting, fracturing, and sealing in foreland thrust belts: Examples from the subalpine chains  

SciTech Connect

The hydrocarbon potential of foreland thrust belts arises from source and reservoir rocks juxtaposed by the movement of thrust sheets, promoting maturation by loading and generating structural traps. Deformation in thrust belts can be localized on fault zones or distributed throughout thrust sheets; different deformation mechanisms operate to increase and decrease permeability. Migration and reservoir properties may be enhanced or reduced by faulting and fault-related deformation. These processes are examined in detail using examples from the northwest subalpine chains of France, a fold-and-thrust belt of well-differentiated Mesozoic shales and carbonates. Seeps of bitumen in foreland basin sediments indicate some migration of hydrocarbons along faults linking probable source and reservoir areas. Detailed examination of fault rocks and thrust sheets shows that fracture formation is an important strain mechanism which has the potential to form regions of enhanced permeability in structures such as hanging wall anticlines. However, the fractures observed are in general recemented, forming with crack-seal crystal growth. The faults themselves are complex zones up to tens of meters thick of subparallel anastomosing gouge, fractures, stylolites, and crystalline calcite, indicating synchronous cataclasis and pressure solution. The range of scales of fracturing suggests stick-slip (microseismic) fault activity. Permeability of the fault zones is enhanced during seismic fault slip and is otherwise steadily decreased by pressure solution and calcite deposition. The available migration pathways, and hence the location of potential reservoirs, is controlled by the timing, mechanisms, and extent of fault activity in this common and productive tectonic regime.

Bowler, S.; Butler, R.W.H.

1988-08-01T23:59:59.000Z

7

Data report: resource ratings of the RARE II tracts in the Idaho-Wyoming-Utah and the central Appalachian thrust belts  

DOE Green Energy (OSTI)

The assessment forms contained in this report constitute the data used in two resource assessments described in A Systematic Method for Resource Rating with Two Applications to Potential Wilderness Areas (Voelker et al. 1979). The assessments were performed for two geologic subprovinces containing proposed wilderness areas identified in the Forest Service Roadless Area Review and Evaluation (RARE II) program. The subprovinces studied are the Idaho-Wyoming-Utah thrust belt and the central Appalachians thrust belt. Each assessment form contains location data, resource ratings, and supporting information for a single tract. A unique dual rating that reflects geologic favorability and certainty of resource occurrence is assigned to each resource category evaluated. Individual ratings are synthesized into an overall tract-importance rating. Ratings created by others are included for comparative purposes wherever available. Supporting information consists of commentary and references that explain and document the ratings listed.

Voelker, A.H.; Wedow, H.; Oakes, E.; Scheffler, P.K.

1979-11-01T23:59:59.000Z

8

Late Cretaceous extension in the hinterland of the Sevier thrust...  

Open Energy Info (EERE)

extension in the hinterland of the Sevier thrust belt, northwestern Utah and southern Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Late...

9

Performance characterization and optimization of a diverging cusped field thruster with a calibrated counter-weighted millinewton thrust stand  

E-Print Network (OSTI)

The previously developed Diverging Cusped Field Thruster (DCFT) has undergone further investigations and performance characterization. The DCFT is a magnetically conned plasma thruster that uses cusped magnetic fields to ...

Daspit, Ryan M

2012-01-01T23:59:59.000Z

10

Laterally bendable belt conveyor  

DOE Patents (OSTI)

An endless, laterally flexible and bendable belt conveyor particularly adapted for coal mining applications in facilitating the transport of the extracted coal up- or downslope and around corners in a continuous manner is disclosed. The conveying means includes a flat rubber belt reinforced along the middle portion thereof along which the major portion of the belt tension is directed so as to cause rotation of the tubular shaped belt when trammed around lateral turns thus preventing excessive belt bulging distortion between adjacent belt supports which would inhibit belt transport. Pretension induced into the fabric reinforced flat rubber belt by conventional belt take-up means supports the load conveyed when the belt conveyor is making lateral turns. The carrying and return portions of the belt are supported and formed into a tubular shape by a plurality of shapers positioned along its length. Each shaper is supported from above by a monorail and includes clusters of idler rollers which support the belt. Additional cluster rollers in each shaper permit the belt supporting roller clusters to rotate in response to the belt's operating tension imposed upon the cluster rollers by induced lateral belt friction forces. The freely rotating roller clusters thus permit the belt to twist on lateral curves without damage to itself while precluding escape of the conveyed material by effectively enclosing it in the tube-shaped, inner belt transport length.

Peterson, William J. (Coraopolis, PA)

1985-01-01T23:59:59.000Z

11

Kuiper Belt Occultation Predictions  

E-Print Network (OSTI)

Here we present observations of 7 large Kuiper Belt Objects. From these observations, we extract a point source catalog with $\\sim0.01"$ precision, and astrometry of our target Kuiper Belt Objects with $0.04-0.08"$ precision within that catalog. We have developed a new technique to predict the future occurrence of stellar occultations by Kuiper Belt Objects. The technique makes use of a maximum likelihood approach which determines the best-fit adjustment to cataloged orbital elements of an object. Using simulations of a theoretical object, we discuss the merits and weaknesses of this technique compared to the commonly adopted ephemeris offset approach. We demonstrate that both methods suffer from separate weaknesses, and thus, together provide a fair assessment of the true uncertainty in a particular prediction. We present occultation predictions made by both methods for the 7 tracked objects, with dates as late as 2015. Finally, we discuss observations of three separate close passages of Quaoar to field star...

Fraser, Wesley C; Trujillo, Chad; Stephens, Andrew W; Kavelaars, JJ; Brown, Michael E; Bianco, Federica B; Boyle, Richard P; Brucker, Melissa J; Hetherington, Nathan; Joner, Michael; Keel, William C; Langill, Phil P; Lister, Tim; McMillan, Russet J; Young, Leslie

2013-01-01T23:59:59.000Z

12

THE HUBBLE WIDE FIELD CAMERA 3 TEST OF SURFACES IN THE OUTER SOLAR SYSTEM: THE COMPOSITIONAL CLASSES OF THE KUIPER BELT  

SciTech Connect

We present the first results of the Hubble Wide Field Camera 3 Test of Surfaces in the Outer Solar System. The purpose of this survey was to measure the surface properties of a large number of Kuiper Belt objects and attempt to infer compositional and dynamical correlations. We find that the Centaurs and the low-perihelion scattered disk and resonant objects exhibit virtually identical bifurcated optical color distributions and make up two well-defined groups of objects. Both groups have highly correlated optical and NIR colors that are well described by a pair of two-component mixture models that have different red components but share a common neutral component. The small, H{sub 606} {approx}> 5.6 high-perihelion excited objects are entirely consistent with being drawn from the two branches of the mixing model, suggesting that the color bifurcation of the Centaurs is apparent in all small excited objects. On the other hand, objects larger than H{sub 606} {approx} 5.6 are not consistent with the mixing model, suggesting some evolutionary process avoided by the smaller objects. The existence of a bifurcation amongst all excited populations argues that the two separate classes of object existed in the primordial disk before the excited Kuiper Belt was populated. The cold classical objects exhibit a different type of surface that has colors that are consistent with being drawn from the red branch of the mixing model, but with much higher albedos.

Fraser, Wesley C.; Brown, Michael E., E-mail: fraserw@gps.caltech.edu [Division of Geological and Planetary Sciences, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125 (United States)

2012-04-10T23:59:59.000Z

13

Thrusts in High Performance Computing  

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

in HPC 1 Thrusts in High Performance Computing Science at Scale Petaflops to Exaflops Science through Volume Thousands to Millions of Simulations Science in Data Petabytes to...

14

Micro thrust and heat generator  

DOE Patents (OSTI)

The present invention relates generally to micromachines such as microengines or micromotors. More specifically, the invention is directed to a micro rocket which functions as a source of heat and thrust, and utilizes chemical energy to drive or power micromechanical apparatuses. The invention is adaptable to applications involving defense, bio-medical, manufacturing, consumer product, aviation, automotive, computer, inspection, and safety systems. A micro thrust and heat generator has a means for providing a combustion fuel source to an ignition chamber of the micro thrust and heat generator. The fuel is ignited by a ignition means within the micro thrust and heat generator`s ignition chamber where it burns and creates a pressure. A nozzle formed from the combustion chamber extends outward from the combustion chamber and tappers down to a narrow diameter and then opens into a wider diameter where the nozzle then terminates outside of said combustion chamber. The pressure created within the combustion chamber accelerates as it leaves the chamber through the nozzle resulting in pressure and heat escaping from the nozzle to the atmosphere outside the micro thrust and heat generator. The micro thrust and heat generator can be microfabricated from a variety of materials, e.g., of polysilicon, on one wafer using surface micromachining batch fabrication techniques or high aspect ratio micromachine techniques (LIGA).

Garcia, E.J.

1995-12-31T23:59:59.000Z

15

Field Mapping At Raft River Geothermal Area (1990) | Open Energy  

Open Energy Info (EERE)

Field Mapping At Raft River Geothermal Area (1990) Field Mapping At Raft River Geothermal Area (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At Raft River Geothermal Area (1990) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Field Mapping Activity Date 1990 Usefulness not indicated DOE-funding Unknown Notes Together, field and 40Ar/39Ar results suggest that Late Cretaceous extension occurred in the Sevier belt hinterland at the same time as shortening in the eastern foreland and at depth in the hinterland. Sufficient topography must have been present to drive upper-crustal extension in the eastern hinterland. References Wells, M.L.; Allmendinger, R.W.; Dallmeyer, R.D. (1 October 1990) Late Cretaceous extension in the hinterland of the Sevier thrust belt,

16

CFES RESEARCH THRUSTS: Energy Storage  

E-Print Network (OSTI)

CFES RESEARCH THRUSTS: Energy Storage Wind Energy Solar Energy Smart Grids Smart Buildings For our industrial partners, the Energy Scholars program is an opportunity to connect with the talent of Rensselaer. Sponsoring a Rensselaer Polytechnic Institute undergraduate as an Energy Scholar enables a company

LĂĽ, James Jian-Qiang

17

Direct thrust measurements and modelling of a radio-frequency expanding plasma thruster  

SciTech Connect

It is shown analytically that the thrust from a simple plasma thruster (in the absence of a magnetic field) is given by the maximum upstream electron pressure, even if the plasma diverges downstream. Direct thrust measurements of a thruster are then performed using a pendulum thrust balance and a laser displacement sensor. A maximum thrust of about 2 mN is obtained at 700 W for a thruster length of 17.5 cm and a flow rate of 0.9 mg s{sup -1}, while a larger thrust of 4 mN is obtained at a similar power for a length of 9.5 cm and a flow rate of 1.65 mg s{sup -1}. The measured thrusts are in good agreement with the maximum upstream electron pressure found from measurements of the plasma parameters and in fair agreement with a simple global approach used to model the thruster.

Lafleur, T.; Charles, C.; Boswell, R. W. [Space Plasma, Power and Propulsion Group, Research School of Physics and Engineering, The Australian National University, Canberra ACT 0200 (Australia); Takahashi, K. [Space Plasma, Power and Propulsion Group, Research School of Physics and Engineering, The Australian National University, Canberra ACT 0200 (Australia); Department of Electrical Engineering and Computer Science, Iwate University, Morioka 020-8551 (Japan)

2011-08-15T23:59:59.000Z

18

Reexamining the Cold Conveyor Belt  

Science Conference Proceedings (OSTI)

Despite the popularity of the conveyor-belt model for portraying the airflow through midlatitude cyclones, questions arise as to the path of the cold conveyor belt, the lower-tropospheric airflow poleward of and underneath the warm front. Some ...

David M. Schultz

2001-09-01T23:59:59.000Z

19

Sandia National Labs: PCNSC: Research: Center Thrusts  

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

Thrusts Science-Based Solutions for Enduring NNSA Mission Needs Collective Hierarchical Systems Compound Semiconductor Science and Technology Nanosciences Optical Sciences...

20

LABORATORY MODELLING OF THE EARTH RADIATION BELT  

E-Print Network (OSTI)

Method of the laboratory modelling of the Earth radiation belt is presented. Method can be used for the estimation of consequences of global energetic and communication projects realizations. The radiation belt of the Earth is the inner part of the magnetosphere, in which the geomagnetic field hold charged particles with kinetic energy from 10 KeV to 100 MeV. This belt play the essential role for the sun radiation regime for the Earth and for the electromagnetic waves propagation. As it is well known, even small alteration of solar activity influent essential upon the biological and ecological balance at the Earth for all levels- from viruses and micro-organisms to biological societies and ecological systems at all. The most bright indicator of the solar activity alteration are changes of the pathogenic organisms activity as a result of a displacement of biological equilibrium. But the other phenomena, which are not connected with pathogenic biological objects are very important for thelife on the Earth and ecological balance too, although they can not be so obviously observed.

Dr. Alexander Luchinskiy A; Prof Dr; Yakov S. Shifrin

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

The viscosity plate thrust bearing  

SciTech Connect

The results of tests on a viscosity plate thrust bearing indicated that serious differences existed between theoretical predictions by existing methods and experimental values. In particular the load carrying capacity at any speed and plate gap was much overestimated by calculation, and the variation of load with speed, at constant gap, appeared to be quite different in theory and experiment. While the theoretical load speed curve departed by only a small amount from linearity, the experimental curves indicated a definite flattening out at high speed, and corresponding to a given gap, a maximum load was reached and maintained independent of speed. It is the aim of this investigation to find the reason for this flattening out of the curve, and to indicate why it is not shown by the theoretical methods. The aerodynamic theory of viscosity plate bearings is considered, and taking into account as many aerodynamic effects as possible, a new method of performance prediction is developed. Results by this method agree quite well with those of existing methods, and therefore the effect which is being looked for cannot be an aerodynamic one already included in the method. Other possible explanations are considered including centrifugal action on the gas, heating up the gas due to frictional losses, a comparison of the plate gap with the mean free path of molecules of the gas, and distortion of the grooved plate under pressure load. Of these it is shown that the first three are not important, but that with the type of plate mounting used in the experiments very serious deflections of the stationary plate can be expected at high speed. At 21,000 rpm and a plate gap of 2.0 x 10/sup -4/ in. and with the theoretically predicted load, the plate deflection reaches a maximum of about five times the nominal gap and moreover varies considerably with radius and around the disc. Because of these distortions the theoretical methods discussed are not applicable to the experimental conditions and the calculated and measured results cannot be compared. It will be seen that constant plate clearance is not involved in the theories in a simple manner and a method which took into account both aerodynamic and elastic effects would be most complex. Although it has not been demonstrated that these additional elastic effects would lead to the flattening out of the calculated curves, it seems most likey that they are responsible for the discrepancies between the theoretical and experimental results. This could be most easily shown by tests on a similar bearing with the grooved plate considerably thicker to increase its stiffness. (auth)

Wordsworth, D.V.

1958-07-01T23:59:59.000Z

22

Oil fields and new plays in the Rioni foreland basin, Republic of Georgia  

Science Conference Proceedings (OSTI)

The Rioni Basin in West Georgia is an Oligocene foredeep that evolved into a Miocene to Pliocene foreland basin, north of the Achara-Trialeti thrust belt and south of the Greater Caucasus. It extends to the west into the Black Sea. A large number of exploration wildcats have been drilled onshore since the nineteenth century and have led to the discovery of three fields. Exploration was prompted by seeps and restricted to frontal ramp anticlines mapped at surface. No wells have been drilled offshore. Supsa (discovered 1889) contains 29 MMbbl oil in clastic Sarmatian reservoirs. The field has around 50 wells but less than 0.5 MMbbl have been produced. Shromisubani (discovered 1973) contains oil within Maeotian and Pontian clastic reservoirs, Chaladidi oil within Upper Cretaceous chalk. Despite this long and apparently intensive exploration effort, several factors make the basin an exciting target for field redevelopment and further exploration. The quality of existing seismic is very poor both on-and offshore. Reinterpretation of the structure of the fold and thrust belt has suggested the presence of new targets and plays which may be imaged by modern seismic methods. In addition, due to problems associated with central planning, discovered fields have not been optimally developed or even fully appraised. The application of new technology, geological interpretation and investment promises to delineate substantial remaining reserves even after more than one hundred years of exploration.

Robinson, A.G.; Griffith, E.T. (JKX Oil and Gas, Guildford (United Kingdom)); Sargeant, J. (RES-Source Limited, Banchory (United Kingdom))

1996-01-01T23:59:59.000Z

23

LANSCE | Lujan Center | Science Thrust Areas  

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

Science Thrust Areas Science Thrust Areas User research at the Lujan Center is focused in four science thrust areas. Each has a contact person who is available to discuss proposed experiments and to provide advice on the appropriate instrument and instrument scientist, available sample environments, and other details for planned experiments. Lujan Center instrument scientists welcome questions and discussions about new experiments and are happy to provide guidance for proposal development. New users are encouraged to contact the appropriate instrument scientist before submitting a proposal. Primary Instruments and Contacts: Surfaces and Interfaces Rex Hjelm - Principal Contact Neutron reflectivity and small angle scattering probe interfaces, surfaces, defects, and their influence on material properties and functionality.

24

Direct measurement of the impulse in a magnetic thrust chamber system for laser fusion rocket  

Science Conference Proceedings (OSTI)

An experiment is conducted to measure an impulse for demonstrating a magnetic thrust chamber system for laser fusion rocket. The impulse is produced by the interaction between plasma and magnetic field. In the experiment, the system consists of plasma and neodymium permanent magnets. The plasma is created by a single-beam laser aiming at a polystyrene spherical target. The impulse is 1.5 to 2.2 {mu}Ns by means of a pendulum thrust stand, when the laser energy is 0.7 J. Without magnetic field, the measured impulse is found to be zero. These results indicate that the system for generating impulse is working.

Maeno, Akihiro; Yamamoto, Naoji; Nakashima, Hideki [Interdisciplinary Graduate School of Engineering Science, Kyushu University, 6-1 Kasuga-kouen, Kasuga, Fukuoka 816-8580 (Japan); Fujioka, Shinsuke; Johzaki, Tomoyuki [Institute of Laser Engineering, Osaka University, Suita, Osaka 565-087 (Japan); Mori, Yoshitaka [Graduate School for the Creation of New Photonics Industries, Hamamatsu, Shizuoka 431-1202 (Japan); Sunahara, Atsushi [Institute for Laser Technology, Suita, Osaka 565-087 (Japan)

2011-08-15T23:59:59.000Z

25

Reactor thrust during boost in a low altitude trajectory  

SciTech Connect

This paper presents thrust calculations for low altitude trajectories for a Tory II-C type propulsion reactor.

Moyer, J.H.

1962-12-14T23:59:59.000Z

26

LANSCE | Lujan Center | Thrust Area | Local Structure, Magnetism, and  

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

User Instruments User Instruments Reflectometers Asterix SPEAR Powder Diffractometers HIPD HIPPO NPDF Engineering Diffraction SMARTS Chemical Spectroscopy FDS Small Angle Scattering LQD Protein Crystallography PCS Inelastic Neutron Spectrometer Pharos Single Crystal Diffractometer SCD Contacts Lujan Center Leader Mark Bourke 505.667.6069 Deputy Leader (Interim) Anna Llobet 505.665.1367 Experimental Area Manager) Charles Kelsey 505.665.5579 Experiment Coordinator Leilani Conradson 505.665.9505 User Office Administrator Lisa Padilla 505.667.5649 Administrative Assistant Melissa Martinez 505.665.0391 Thrust Area Local Structure, Magnetism, and Nanomaterials The Lujan Neutron Scattering Center encompasses a set of powder diffractometers, instrument scientist specialists, and sample environments (pressure, temperature, and magnetic field) equipped to address challenges

27

Technical Communique: Optimal control of the thrusted skate  

Science Conference Proceedings (OSTI)

This paper derives optimal controls for the thrusted skate between any two points in the plane. The thrusted skate consists of a skate, which steers the motion in R^2, and a fixed-orientation thruster which provides the power to move the system. This ... Keywords: Optimal trajectory planning, Workless steering actuators

Kevin M. Lynch

2003-01-01T23:59:59.000Z

28

SunBelt Biofuels | Open Energy Information  

Open Energy Info (EERE)

SunBelt Biofuels SunBelt Biofuels Jump to: navigation, search Logo: SunBelt Biofuels Name SunBelt Biofuels Place Soperton, Georgia Zip 30457 Sector Biomass Product Freedom Giant Miscanthus Website http://www.sunbeltbiofuelsllc. Coordinates 32.3771182°, -82.5923554° 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":32.3771182,"lon":-82.5923554,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

29

Thrust stand for vertically oriented electric propulsion performance evaluation  

Science Conference Proceedings (OSTI)

A variation of a hanging pendulum thrust stand capable of measuring the performance of an electric thruster operating in the vertical orientation is presented. The vertical orientation of the thruster dictates that the thruster must be horizontally offset from the pendulum pivot arm, necessitating the use of a counterweight system to provide a neutrally stable system. Motion of the pendulum arm is transferred through a balance mechanism to a secondary arm on which deflection is measured. A noncontact light-based transducer is used to measure displacement of the secondary beam. The members experience very little friction, rotating on twisting torsional pivots with oscillatory motion attenuated by a passive, eddy-current damper. Displacement is calibrated using an in situ thrust calibration system. Thermal management and self-leveling systems are incorporated to mitigate thermal and mechanical drifts. Gravitational force and torsional spring constants associated with flexure pivots provide restoring moments. An analysis of the design indicates that the thrust measurement range spans roughly four decades, with the stand capable of measuring thrust up to 12 N for a 200 kg thruster and up to approximately 800 mN for a 10 kg thruster. Data obtained from calibration tests performed using a 26.8 lbm simulated thruster indicated a resolution of 1 mN on 100 mN level thrusts, while those tests conducted on a 200 lbm thruster yielded a resolution of roughly 2.5 mN at thrust levels of 0.5 N and greater.

Moeller, Trevor [University of Tennessee Space Institute, Tullahoma, Tennessee 37388 (United States); Polzin, Kurt A. [NASA, Marshall Space Flight Center, Huntsville, Alabama 35812 (United States)

2010-11-15T23:59:59.000Z

30

Corn Belt Power Coop | Open Energy Information  

Open Energy Info (EERE)

Corn Belt Power Coop Corn Belt Power Coop Place Iowa Utility Id 4363 Utility Location Yes Ownership C NERC Location MRO NERC MRO Yes ISO Other Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Wholesale Marketing Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png No rate schedules available. Average Rates No Rates Available References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Corn_Belt_Power_Coop&oldid=41053

31

Lightning-induced coupling of the radiation belts to geomagnetically conjugate ionospheric regions  

SciTech Connect

Very low frequency (VLF) radio observations in Antarctica and North America provide the first evidence that bursts of energetic electrons from the earth's radiation belts commonly precipitate into geomagnetically conjugate ionospheric regions in response to lightning. The electrons, with energies ranging from tens of keV to over one MeV, appear to be scattered out of their otherwise stable trap in the earth's magnetic field by magnetospheric interactions with a regularly observed class of transient, lightning-generated VLF radio waves known as ducted whistlers. The precipitating electrons ionize atmospheric molecules at altitudes between 40 and 90 km, creating transient enhancements of ionization levels in conjugate locations. These ionospheric disturbances can be detected by their characteristic perturbations, sometimes called 'Trimpi events,' of the amplitude and phase of VLF transmitter signals propagating subionospherically within 200 to 250 km of the disturbed areas. The first detailed, one-to-one comparison of such signal perturbations, monitored in conjugate regions, with the multipath structure, arrival azimuths, and predicted electron scattering of simultaneously observed ducted whistlers suggests that every ducted whistler precipitates bursts of radiation belt electrons. If so, the estimated rate at which ducted whistlers contribute to radiation belt losses is comparable to that predicted for plasmaspheric hiss, a different class of magnetospheric wave that is often considered to control the structure of the belts. Lightning could therefore play a significant role in the maintenance of radiation belt equilibrium.

Burgess, W.C.

1993-01-01T23:59:59.000Z

32

Reactor thrust during boost in a high altitude trajectory  

SciTech Connect

Reactor startup of a submarine based missile must be accomplished during boost., so that at burnout the reactor maximum wall temperature is at or near the design value. Because cooling air must be supplied during this period, there exists the possibility of obtaining some thrust to augment the booster. To find how much reactor thrust might be available, a representative high altitude boost trajectory was selected. This is shown together with an estimated pressure recovery curve for the inlet. It has been assumed that by some appropriate means the flow rate passed by the inlet exactly matches that demanded by the reactor and nozzle. Hot day conditions are assumed. The missile power plant was the Tory II-C reactor with its design point-optimized nozzle throat area of 750 square inches. Nozzle expansion is complete. The reactor maximum wall temperature was assumed to be constant at design (2500 degrees F) from time zero. Thus the thrust computed at any time is the maximum possible within the reactor design temperature limitation, and provides a guide to a desirable startup time. Available thrust and reactor exit conditions were obtained with the digital codes Dash N and Nomac.

Moyer, J.H.

1962-11-12T23:59:59.000Z

33

Engineering Research, Development and Technology, FY95: Thrust area report  

SciTech Connect

The mission of the Engineering Research, Development, and Technology Program at Lawrence Livermore National Laboratory (LLNL) is to develop the knowledge base, process technologies, specialized equipment, tools and facilities to support current and future LLNL programs. Engineering`s efforts are guided by a strategy that results in dual benefit: first, in support of Department of Energy missions, such as national security through nuclear deterrence; and second, in enhancing the nation`s economic competitiveness through their collaboration with US industry in pursuit of the most cost-effective engineering solutions to LLNL programs. To accomplish this mission, the Engineering Research, Development, and Technology Program has two important goals: (1) identify key technologies relevant to LLNL programs where they can establish unique competencies, and (2) conduct high-quality research and development to enhance their capabilities and establish themselves as the world leaders in these technologies. To focus Engineering`s efforts, technology thrust areas are identified and technical leaders are selected for each area. The thrust areas are comprised of integrated engineering activities, staffed by personnel from the nine electronics and mechanical engineering divisions, and from other LLNL organizations. This annual report, organized by thrust area, describes Engineering`s activities for fiscal year 1995. The report provides timely summaries of objectives methods, and key results from eight thrust areas: computational electronics and electromagnetics; computational mechanics; microtechnology; manufacturing technology; materials science and engineering; power conversion technologies; nondestructive evaluation; and information engineering.

NONE

1996-02-01T23:59:59.000Z

34

Keck Pencil-Beam Survey for Faint Kuiper Belt Objects  

E-Print Network (OSTI)

We present the results of a pencil-beam survey of the Kuiper Belt using the Keck 10-m telescope. A single 0.01 square degree field is imaged 29 times for a total integration time of 4.8 hr. Combining exposures in software allows the detection of Kuiper Belt Objects (KBOs) having visual magnitude V < 27.9. Two new KBOs are discovered. One object having V = 25.5 lies at a probable heliocentric distance d = 33 AU. The second object at V = 27.2 is located at d = 44 AU. Both KBOs have diameters of about 50 km, assuming comet-like albedos of 4%. Data from all surveys are pooled to construct the luminosity function from red magnitude R = 20 to 27. The cumulative number of objects per square degree, N (< R), is fitted to a power law of the form log_(10) N = 0.52 (R - 23.5). Differences between power laws reported in the literature are due mainly to which survey data are incorporated, and not to the method of fitting. The luminosity function is consistent with a power-law size distribution for objects having dia...

Chiang, E I

1999-01-01T23:59:59.000Z

35

Thrust Area Report, Engineering Research, Development and Technology  

SciTech Connect

The mission of the Engineering Research, Development, and Technology Program at Lawrence Livermore National Laboratory (LLNL) is to develop the knowledge base, process technologies, specialized equipment, tools and facilities to support current and future LLNL programs. Engineering`s efforts are guided by a strategy that results in dual benefit: first, in support of Department of Energy missions, such as national security through nuclear deterrence; and second, in enhancing the nation`s economic competitiveness through our collaboration with U.S. industry in pursuit of the most cost- effective engineering solutions to LLNL programs. To accomplish this mission, the Engineering Research, Development, and Technology Program has two important goals: (1) identify key technologies relevant to LLNL programs where we can establish unique competencies, and (2) conduct high-quality research and development to enhance our capabilities and establish ourselves as the world leaders in these technologies. To focus Engineering`s efforts technology {ital thrust areas} are identified and technical leaders are selected for each area. The thrust areas are comprised of integrated engineering activities, staffed by personnel from the nine electronics and mechanical engineering divisions, and from other LLNL organizations. This annual report, organized by thrust area, describes Engineering`s activities for fiscal year 1996. The report provides timely summaries of objectives, methods, and key results from eight thrust areas: Computational Electronics and Electromagnetics; Computational Mechanics; Microtechnology; Manufacturing Technology; Materials Science and Engineering; Power Conversion Technologies; Nondestructive Evaluation; and Information Engineering. Readers desiring more information are encouraged to contact the individual thrust area leaders or authors. 198 refs., 206 figs., 16 tabs.

Langland, R. T.

1997-02-01T23:59:59.000Z

36

Corn Belt Energy Corporation | Open Energy Information  

Open Energy Info (EERE)

Corn Belt Energy Corporation Corn Belt Energy Corporation Place Illinois Utility Id 4362 Utility Location Yes Ownership C NERC Location RFC NERC RFC Yes ISO MISO Yes Activity Transmission Yes Activity Distribution Yes Activity Bundled Services Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png INDUSTRIAL SUBSTATION RATE ("ISR") Industrial RATE 1 RESIDENTIAL & FARM SERVICE Residential RATE 10 ELECTRIC HEAT FOR RESIDENTIAL & FARM SERVICE Residential RATE 11 RESIDENTIAL & FARM SERVICE - INTERRUPTIBLE Residential RATE 12 RESIDENTIAL ELECTRICALLY HEATED APARTMENTS Residential

37

Urban Decline in Rust-Belt Cities  

E-Print Network (OSTI)

Many Rust-Belt cities have seen almost half their populations move from inside the city borders to the surrounding suburbs and elsewhere since the 1970s. As populations shifted, neighborhoods changed—in their average income, educational profi le, and housing prices. But the shift did not happen in every neighborhood at the same rate. Recent research has uncovered some of the patterns characterizing the process. Most major Rust-Belt cities have seen their populations shrink since their heydays, and with that decline, the average income of the remaining residents has fallen as well. Cities such as Buffalo, Cleveland, Detroit, and Pittsburgh have each lost more than 40 percent of their populations over the last four decades. However, the losses have not been uniform across neighborhoods. Some neighborhoods have declined more rapidly than others. The uneven population decline across neighborhoods implies that the distributions of income, house prices, and human capital have also shifted within cities and the larger

Daniel Hartley

2013-01-01T23:59:59.000Z

38

The Kuiper Belt and Other Debris Disks  

E-Print Network (OSTI)

We discuss the current knowledge of the Solar system, focusing on bodies in the outer regions, on the information they provide concerning Solar system formation, and on the possible relationships that may exist between our system and the debris disks of other stars. Beyond the domains of the Terrestrial and giant planets, the comets in the Kuiper belt and the Oort cloud preserve some of our most pristine materials. The Kuiper belt, in particular, is a collisional dust source and a scientific bridge to the dusty "debris disks" observed around many nearby main-sequence stars. Study of the Solar system provides a level of detail that we cannot discern in the distant disks while observations of the disks may help to set the Solar system in proper context.

Jewitt, David; Lacerda, Pedro

2008-01-01T23:59:59.000Z

39

Numerical Investigations of Kuiper Belt Binaries  

E-Print Network (OSTI)

Observations of the Kuiper Belt indicate that a larger than expected percentage of KBO's (approximately 8 out of 500) are in binary pairs. The formation and survival of such objects presents a conundrum [1]. Two competing theories have been postulated to try to solve this problem. One entails the physical collision of bodies [2] while the other utilizes dynamical friction or a third body to dissipate excess momentum and energy from the system [3]. Although in general known binaries tend to differ significantly in mass, such as seen in the Earth-Moon or asteroid binary systems [4], Kuiper binaries discovered to date tend to instead be of similar size [5, 6]. This paper investigates the stability, development and lifetimes for Kuiper Belt binaries by tracking their orbital dynamics and subsequent evolution. Section two details the numerical model while Section three discusses the initial conditions. Finally, in Section four the results are discussed with Section five containing the conclusions.

R. C. Nazzario; T. W. Hyde

2005-01-20T23:59:59.000Z

40

Engineering research, development and technology. Thrust area report, FY93  

Science Conference Proceedings (OSTI)

The mission of the Engineering Research, Development, and Technology Program at Lawrence Livermore National Laboratory (LLNL) is to develop the technical staff, tools, and facilities needed to support current and future LLNL programs. The efforts are guided by a dual-benefit research and development strategy that supports Department of Energy missions, such as national security through nuclear deterrence and economic competitiveness through partnerships with U.S. industry. This annual report, organized by thrust area, describes the activities for the fiscal year 1993. The report provides timely summaries of objectives, methods, and results from nine thrust areas for this fiscal year: Computational Electronics and Electromagnetics; Computational Mechanics; Diagnostics and Microelectronics; Fabrication Technology; Materials Science and Engineering; Power Conversion Technologies; Nondestructive Evaluation; Remote Sensing, Imaging, and Signal Engineering; and Emerging Technologies. Separate abstracts were prepared for 47 papers in this report.

Not Available

1994-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Precipitation of relativistic electrons of the Van Allen belts into the proton aurora  

Science Conference Proceedings (OSTI)

The Van Allen electron belts consist of two regions encircling the earth in which relativistic electrons are trapped in the earth's magnetic field. Populations of relativistic electrons in the Van Allen belts vary greatly with geomagnetic disturbance and they are a major source of damage to space vehicles. In order to know when and by how much these populations of relativistic electrons increase, it is important to elucidate not only the cause of acceleration of relativistic electrons but also the cause of their loss from the Van Allen belts. Here we show the first evidence that left-hand polarized electromagnetic ion cyclotron (EMIC) plasma waves can cause the loss of relativistic electrons into the atmosphere, on the basis of results of an excellent set of ground and satellite observations showing coincident precipitation of ions with energies of tens of keV and of relativistic electrons into an isolated proton aurora. The proton aurora was produced by precipitation of ions with energies of tens of keV due to EMIC waves near the plasma pause, which is a manifestation of wave-particle interactions. These observations clarify that ions with energies of tens of keV affect the evolution of relativistic electrons in the Van Allen belts via parasitic resonance with EMIC waves, an effect that was first theoretically predicted in the early 1970's.

Jordanova, Vania K [Los Alamos National Laboratory; Miyoshi, Y [NAGOYA UNIV; Sakaguchi, K [NAGOYA UNIV; Shiokawa, K [NAGOYA UNIV; Evans, D S [SEC/NOAA; Albert, Jay [AFRL; Connors, M [UNIV OF ATHABASCA

2008-01-01T23:59:59.000Z

42

Los Alamos provides HOPE for radiation belt storm probes  

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

HOPE for radiation belt storm probes HOPE for radiation belt storm probes Los Alamos provides HOPE for radiation belt storm probes The HOPE analyzer is one of a suite of instruments that was successfully launched as part of the Radiation Belt Storm Probe mission. August 30, 2012 Artist's rendering showing two spacecraft representing the not-yet-designed Radiation Belt Storm Probes that will study the sun and its effects on Earth. PHOTO CREDIT: Johns Hopkins University Applied Physics Laboratory Artist's rendering showing two spacecraft representing the not-yet-designed Radiation Belt Storm Probes that will study the sun and its effects on Earth. PHOTO CREDIT: Johns Hopkins University Applied Physics Laboratory Contact James E. Rickman Communications Office (505) 665-9203 Email "Today we are boldly going where no spacecraft ever wants to go."

43

New compounds will help coal operators comply with BELT standards  

Science Conference Proceedings (OSTI)

US coal producers will soon have a new set of conveyor belting standards, which are currently proposed as a rulemaking by the Mine Safety and Health Administration (MSHA), to bring higher levels of resistance to propagation of fire by a secondary source. The new test being put into effect is known as a Belt Evaluation Laboratory Test (BELT). The article, submitted by Fenner Dunlop, discusses the company's testing procedures and the development of conveyors to comply with regulations. 2 photos.

NONE

2009-04-15T23:59:59.000Z

44

Magnetic refrigeration apparatus with belt of ferro or paramagnetic material  

DOE Patents (OSTI)

A magnetic refrigerator operating in the 12 to 77 K range utilizes a belt which carries ferromagnetic or paramagnetic material and which is disposed in a loop which passes through the center of a solenoidal magnet to achieve cooling. The magnetic material carried by the belt, which can be blocks in frames of a linked belt, can be a mixture of substances with different Curie temperatures arranged such that the Curie temperatures progressively increase from one edge of the belt to the other. This magnetic refrigerator can be used to cool and liquefy hydrogen or other fluids.

Barclay, J.A.; Stewart, W.F.; Henke, M.D.; Kalash, K.E.

1986-04-03T23:59:59.000Z

45

Mysterious electron stash found hidden among Van Allen belts  

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

findings, discovered by NASA's Van Allen Probes (formerly known as the Radiation Belt Storm Probes), were outlined Thursday in Science Express and during a press conference at...

46

Corn Belt Energy Corporation- Residential Energy Efficiency Rebate Program  

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

Corn Belt Energy Corporation (CBEC), in association with the Wabash Valley Power Association, provides its customers with the "Power Moves" energy efficiency rebate program. Through this program,...

47

Exploration for uranium deposits, Grants mineral belt  

Science Conference Proceedings (OSTI)

Uranium ore deposits in the Grants mineral belt, New Mexico, occur in fluvial sandstones in the Morrison Formation (Jurassic). Uranium mineralization is concentrated by a dark-gray to black substance that has been identified as humate, which is derived from decaying vegetation. Black ore is truncated by overlying sandstone in at least three ore deposits, documenting an early age for mineralization. Ore deposits in the Grants mineral belt vary greatly in size and shape, tend to occur in clusters, and often present difficult drill targets. Current exploration is largely a matter of drilling in stages to distinguish favorable from unfavorable ground on a wide spacing, to seek mineralization in favorable ground, and to conduct close-spaced drilling in mineralized areas. Criteria for favorability differ among exploration groups but generally include 1) presence of a host sandstone, 2) anomalous mineralization, 3) color of the host rock, 4) presence of carbonaceous matter, and 5) position of the area relative to mineralized trends. A description of the drilling sequence, from ore discovery to the development of a mine at the Johnny M deposit (in the east part of the Ambrosia Lake district), exemplifies the problem of predicting where orebodies may occur. A study of the drill data at the Johnny M indicates the uranium ore is not related to specific geologic features other than humate, which is commonly associated with coalified plant fragments in mudstone-rich parts of the host sandstone.

Fitch, D.C.

1980-01-01T23:59:59.000Z

48

WATER ICE IN THE KUIPER BELT  

Science Conference Proceedings (OSTI)

We examine a large collection of low-resolution near-infrared spectra of Kuiper Belt objects (KBOs) and centaurs in an attempt to understand the presence of water ice in the Kuiper Belt. We find that water ice on the surface of these objects occurs in three separate manners: (1) Haumea family members uniquely show surfaces of nearly pure water ice, presumably a consequence of the fragmentation of the icy mantle of a larger differentiated proto-Haumea; (2) large objects with absolute magnitudes of H ice-perhaps mixed with ammonia-that appears to be related to possibly ancient cryovolcanism on these large objects; and (3) smaller KBOs and centaurs which are neither Haumea family members nor cold-classical KBOs appear to divide into two families (which we refer to as 'neutral' and 'red'), each of which is a mixture of a common nearly neutral component and either a slightly red or very red component that also includes water ice. A model suggesting that the difference between neutral and red objects due to formation in an early compact solar system either inside or outside, respectively, of the {approx}20 AU methanol evaporation line is supported by the observation that methanol is only detected on the reddest objects, which are those which would be expected to have the most of the methanol containing mixture.

Brown, M. E.; Fraser, W. C. [Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 (United States); Schaller, E. L., E-mail: mbrown@caltech.edu [NASA Dryden Aircraft Operations Facility, Palmdale, CA 93550 (United States)

2012-06-15T23:59:59.000Z

49

Attitude control of a spinning rocket via thrust vectoring  

Science Conference Proceedings (OSTI)

Two controllers are developed to provide attitude control of a spinning rocket that has a thrust vectoring capability. The first controller has a single-input/single-output design that ignores the gyroscopic coupling between the control channels. The second controller has a multi-input/multi-output structure that is specifically intended to account for the gyroscopic coupling effects. A performance comparison between the two approached is conducted for a range of roll rates. Each controller is tested for the ability to track step commands, and for the amount of coupling impurity. Both controllers are developed via a linear-quadratic-regulator synthesis procedure, which is motivated by the multi-input/multi-output nature of second controller. Time responses and a singular value analysis are used to evaluate controller performance. This paper describes the development and comparison of two controllers that are designed to provide attitude control of a spinning rocket that is equipped with thrust vector control. 12 refs., 13 figs., 2 tabs.

White, J.E.

1990-12-19T23:59:59.000Z

50

Performance Analysis of J85 Turbojet Engine Matching Thrust with Reduced Inlet Pressure to the Compressor.  

E-Print Network (OSTI)

??Jet engines are required to operate at a higher rpm for the same thrust values in cases such as aircraft landing and military loitering. High… (more)

Yarlagadda, Santosh

2010-01-01T23:59:59.000Z

51

INCLINATION MIXING IN THE CLASSICAL KUIPER BELT  

SciTech Connect

We investigate the long-term evolution of the inclinations of the known classical and resonant Kuiper Belt objects (KBOs). This is partially motivated by the observed bimodal inclination distribution and by the putative physical differences between the low- and high-inclination populations. We find that some classical KBOs undergo large changes in inclination over gigayear timescales, which means that a current member of the low-inclination population may have been in the high-inclination population in the past, and vice versa. The dynamical mechanisms responsible for the time variability of inclinations are predominantly distant encounters with Neptune and chaotic diffusion near the boundaries of mean motion resonances. We reassess the correlations between inclination and physical properties including inclination time variability. We find that the size-inclination and color-inclination correlations are less statistically significant than previously reported (mostly due to the increased size of the data set since previous works with some contribution from inclination variability). The time variability of inclinations does not change the previous finding that binary classical KBOs have lower inclinations than non-binary objects. Our study of resonant objects in the classical Kuiper Belt region includes objects in the 3:2, 7:4, 2:1, and eight higher-order mean motion resonances. We find that these objects (some of which were previously classified as non-resonant) undergo larger changes in inclination compared to the non-resonant population, indicating that their current inclinations are not generally representative of their original inclinations. They are also less stable on gigayear timescales.

Volk, Kathryn; Malhotra, Renu, E-mail: kvolk@lpl.arizona.edu [Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721 (United States)

2011-07-20T23:59:59.000Z

52

The Warped Plane of the Classical Kuiper Belt  

E-Print Network (OSTI)

By numerically integrating the orbits of the giant planets and of test particles for four billion years, we follow the evolution of the location of the midplane of the Kuiper belt. The Classical Kuiper belt conforms to a warped sheet that precesses with a 1.9 Myr period. The present-day location of the Kuiper belt plane can be computed using linear secular perturbation theory: the local normal to the plane is given by the theory's forced inclination vector, which is specific to every semi-major axis. The Kuiper belt plane does not coincide with the invariable plane, but deviates from it by up to a few degrees in stable zones. A Kuiper belt object keeps its free inclination relative to the Kuiper belt plane nearly constant, even while the plane departs from the trajectory predicted by linear theory. The constancy of free inclination simply reflects the undamped amplitude of free oscillation. Current observations of Classical Kuiper belt objects are consistent with the plane being warped by the giant planets al...

Chiang, Eugene

2008-01-01T23:59:59.000Z

53

Gravity as Archimedes' thrust and a bifurcation in that theory  

E-Print Network (OSTI)

Euler's interpretation of Newton's gravity (NG) as Archimedes' thrust in a fluid ether is presented in some detail. Then a semi-heuristic mechanism for gravity, close to Euler's, is recalled and compared with the latter. None of these two "gravitational ethers" can obey classical mechanics. This is logical since the ether defines the very reference frame, in which mechanics is defined. This concept is used to build a scalar theory of gravity: NG corresponds to an incompressible ether, a compressible ether leads to gravitational waves. In the Lorentz-Poincar\\'e version, special relativity is compatible with the ether, but, with the heterogeneous ether of gravity, it applies only locally. A correspondence between metrical effects of uniform motion and gravitation is assumed, yet in two possible versions (one is new). Dynamics is based on a (non-trivial) extension of Newton's second law. The observational status for the theory with the older version of the correspondence is summarized.

Mayeul Arminjon

2004-04-21T23:59:59.000Z

54

Thermal ground water flow systems in the thrust zone in southeastern Idaho  

DOE Green Energy (OSTI)

The results of a regional study of thermal and non-thermal ground water flow systems in the thrust zone of southern Idaho and western Wyoming are presented. The study involved hydrogeologic and hydrochemical data collection and interpretation. Particular emphasis was placed on analyzing the role that thrust zones play in controlling the movement of thermal and non-thermal fluids.

Ralston, D.R.

1983-05-01T23:59:59.000Z

55

Geochronologic studies in the Grants mineral belt  

SciTech Connect

Geologic observation coupled with radiometric age dating can be used to assess ages of ore formation and, in some cases, ages of sedimentation in the Grants mineral belt. Rb-Sr studies indicate the earliest mineralization is trend ore at Ambrosia Lake and Smith Lake, dated at 139 +- 9.5 m.y. This date is similar to that for barren-rock montmorillonite from the Jackpile sandstone (Late Jurassic): 142 +- 14 m.y.; it may be used, with caution, to indicate the minimum age of sedimentation for the Morrison Formation. Geologic evidence indicates epigenetic rather than syngenetic ore formation. Barren-rock montmorillonites from Ambrosia Lake yield a poorly defined isochron of 132 +- 26 m.y. Early formed ore at the Jackpile-Paguate mine, Laguna district, was remobilized and reprecipitated at 113 +- 7 m.y. This date is older than the range of dates for the Dakota Formation (Cretaceous) and Mancos Shale. The 113 +- 7 m.y. mid-Cretaceous date for the Jackpile-Paguate ore is consistent with geologic evidence; geologic control suggests that other ore deposits are post-Late Jurassic but pre-Dakota Formation. Based on geologic evidence, mineralization in the Dakota Formation is thought to be very young. Laramide mineralization (60 to 70 m.y.) is evidenced by the presence of some stack ore. At least one uranium deposit, located partly in oxidized ground at the main redox front of the Grants mineral belt, may represent Tertiary mineralization; the clay-mineral Rb-Sr systematics of this deposit have been severely perturbed. Younger mineralization is indicated by U-Pb dates on uranophane (9 to 10 m.y.), and Pleistocene mineralization is noted for some ore. U-Pb dates of U/sup 4 +/ -rich ore minerals cluster between 80 and 100 m.y., although some are as old as 140 to 150 m.y. K-Ar dates on clay minerals range from 49 to 138 m.y. The reasons for this scatter are not known, although loss of radiogenic /sup 40/Ar due to burial is probable.

Brookins, D.G.

1980-01-01T23:59:59.000Z

56

Climatology of Tropical System Rainfall on the Eastern Corn Belt  

Science Conference Proceedings (OSTI)

This study examines the frequency of greater than 2.54 cm (1 in) daily rainfall totals averaged within a climate division (CD) associated with tropical systems that moved through the Eastern Corn Belt region during the growing season. These ...

Alex Haberlie; Kari Gale; David Changnon; Mike Tannura

57

Corn Belt Energy Coop- Commercial Energy Efficiency Rebate Program (Illinois)  

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

Corn Belt Energy, through the Wabash Valley Power Association, offers business, school, and farm customers a variety of energy efficient rebates and incentives through its "Power Moves" program....

58

Air Temperature Model Evaluation in the North Mediterranean Belt Area  

Science Conference Proceedings (OSTI)

A comparative assessment of air temperature models, using hourly and daily air temperature measurements in 34 different stations in the north Mediterranean belt, is presented. Four air temperature models were used to estimate hourly and daily ...

Julia Bilbao; Argimiro H. de Miguel; Harry D. Kambezidis

2002-08-01T23:59:59.000Z

59

Warm Conveyor Belts in Idealized Moist Baroclinic Wave Simulations  

Science Conference Proceedings (OSTI)

This idealized modeling study of moist baroclinic waves addresses the formation of moist ascending airstreams, so-called warm conveyor belts (WCBs), their characteristics, and their significance for the downstream flow evolution. Baroclinic wave ...

Sebastian Schemm; Heini Wernli; Lukas Papritz

2013-02-01T23:59:59.000Z

60

A 15-Year Climatology of Warm Conveyor Belts  

Science Conference Proceedings (OSTI)

This study presents the first climatology of so-called warm conveyor belts (WCBs), strongly ascending moist airstreams in extratropical cyclones that, on the time scale of 2 days, rise from the boundary layer to the upper troposphere. The ...

Sabine Eckhardt; Andreas Stohl; Heini Wernli; Paul James; Caroline Forster; Nicole Spichtinger

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Technical assessment of Engineering`s Manufacturing Technology Thrust Area at Lawrence Livermore National Laboratory  

SciTech Connect

This document investigates the connection between the Manufacturing Technology Thrust Area and its market and concludes that the connection should include the programs internal to LLNL and customers outside of LLNL. The thrust area`s existing mission is reviewed and while it remains relevant to the future, it is too broad for the assigned resources. The scope of the thrust area`s mission is therefore narrowed to more specifically address precision in manufacturing. The course to pursue the new focus is plotted, and the projects for FY95 are briefly discussed.

Blaedel, K.L.

1995-07-27T23:59:59.000Z

62

Angle stations in or for endless conveyor belts  

DOE Patents (OSTI)

In an angle station for an endless conveyor belt, there are presented to each incoming run of the belt stationary curved guide members (18, 19) of the shape of a major segment of a right-circular cylinder and having in the part-cylindrical portion (16 or 17) thereof rectangular openings (15) arranged in parallel and helical paths and through which project small freely-rotatable rollers (14), the continuously-changing segments of the curved surfaces of which projecting through said openings (15) are in attitude to change the direction of travel of the belt (13) through 90.degree. during passage of the belt about the part-cylindrical portion (16 or 17) of the guide member (18 or 19). The rectangular openings (15) are arranged with their longer edges lengthwise of the diagonals representing the mean of the helix but with those of a plurality of the rows nearest to each end of the part-cylindrical portion (16 or 17) slightly out of axial symmetry with said diagonals, being slightly inclined in a direction about the intersections (40) of the diagonals of the main portion of the openings, to provide a "toe-in" attitude in relation to the line of run of the endless conveyor belt.

Steel, Alan (Glasgow, GB6)

1987-04-07T23:59:59.000Z

63

Combustion Chamber Fluid Dynamics and Hypergolic Gel Propellant Chemistry Simulations for Selectable Thrust Rocket Engines  

Science Conference Proceedings (OSTI)

The Army is developing gelled bipropellants and tactical missile propulsion systems that utilize these propellants for future combat systems. The use of hypergolic gel propellants introduces new capabilities for selectable thrust missiles while at the ...

Michael J. Nusca; Michael J. McQuaid

2004-06-01T23:59:59.000Z

64

rf power system for thrust measurements of a helicon plasma source  

SciTech Connect

A rf power system has been developed, which allows the use of rf plasma devices in an electric propulsion test facility without excessive noise pollution in thruster diagnostics. Of particular importance are thrust stand measurements, which were previously impossible due to noise. Three major changes were made to the rf power system: first, the cable connection was changed from a balanced transmission line to an unbalanced coaxial line. Second, the rf power cabinet was placed remotely in order to reduce vibration-induced noise in the thrust stand. Finally, a relationship between transmission line length and rf was developed, which allows good transmission of rf power from the matching network to the helicon antenna. The modified system was tested on a thrust measurement stand and showed that rf power has no statistically significant contribution to the thrust stand measurement.

Kieckhafer, Alexander W.; Walker, Mitchell L. R. [Department of Aerospace Engineering, High-Power Electric Propulsion Laboratory, College of Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)

2010-07-15T23:59:59.000Z

65

Orbit determination using modern filters/smoothers and continuous thrust modeling  

E-Print Network (OSTI)

The development of electric propulsion technology for spacecraft has led to reduced costs and longer lifespans for certain types of satellites. Because these satellites frequently undergo continuous thrust, predicting their ...

Folcik, Zachary James

2008-01-01T23:59:59.000Z

66

Corn Belt Energy Coop - Commercial Energy Efficiency Rebate Program  

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

Corn Belt Energy Coop - Commercial Energy Efficiency Rebate Program Corn Belt Energy Coop - Commercial Energy Efficiency Rebate Program (Illinois) Corn Belt Energy Coop - Commercial Energy Efficiency Rebate Program (Illinois) < Back Eligibility Agricultural Commercial Industrial Savings Category Other Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Appliances & Electronics Commercial Lighting Lighting Maximum Rebate Custom Project: $0.06 per kWh reduced or 50% of project cost, up to $50,000 Program Info State Illinois Program Type Utility Rebate Program Rebate Amount Air Cooled Unitary Packaged AC/Split Systems: $60 - $75/ton Air Source Heat Pumps: $60 - $75/ton Geothermal Heat Pumps: $60 - $75/ton Packaged Terminal Heat Pump: $50/ton Room A/C: $20 Air Economizer: $150 - $180 Night Covers: $6 Programmable Thermostat: $20 - $25

67

Wheat Belt Public Power Dist | Open Energy Information  

Open Energy Info (EERE)

Belt Public Power Dist Belt Public Power Dist Jump to: navigation, search Name Wheat Belt Public Power Dist Place Nebraska Utility Id 20509 Utility Location Yes Ownership P NERC Location WECC/MRO NERC MRO Yes NERC WECC Yes Activity Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png DISTRIBUTION HEAVY INDUSTRIAL (E-2) Commercial GENERAL PURPOSE - LARGE COMMERCIAL Industrial GENERAL PURPOSE - LARGE COMMERCIAL Commercial GENERAL PURPOSE - SMALL Residential GENERAL PURPOSE - SMALL COMMERCIAL Commercial IRRIGATION Multi Phase Commercial LARGE POWER Industrial

68

Microstructures and Rheology of a Limestone-Shale Thrust Fault  

E-Print Network (OSTI)

The Copper Creek thrust fault in the southern Appalachians places Cambrian over Ordovician sedimentary strata. The fault accommodated displacement of 15-20 km at 100-180 °C. Along the hanging wall-footwall contact, microstructures within a ~2 cm thick calcite and shale shear zone suggest that calcite, not shale, controlled the rheology of the shear zone rocks. While shale deformed brittley, plasticity-induced fracturing in calcite resulted in ultrafine-grained (shale into the shear zone, shows the evolution of rheology within the shear zone. Sedimentary laminations 1 cm below the shear zone are cut by minor faults, stylolites, and fault-parallel and perpendicular calcite veins. At vein intersections, calcite grain size is reduced (to ~0.3 ?m), and microstructures include inter-and-intragranular fractures, four-grain junctions, and interpenetrating boundaries. Porosity rises to 6 percent from shale clasts (5-350 ?m) lie within an ultrafine-grained calcite (shale matrix. Ultrafinegrained calcite (shale. Calcite vein microstructures suggest veins continued to form during deformation. Fractures at twin-twin and twin-grain boundary intersections suggest grain size reduction by plasticity-induced fracturing, resulting in <1 ?m grains. Interpenetrating boundaries, four-grain junctions, and no LPO indicate the ultrafine-grained calcite deformed by viscous grain boundary sliding. The evolution of the ultrafine-grain shear zone rocks by a combination of plastic and brittle processes and the deformation of the interconnected network of ultrafine-grained calcite by viscous GBS enabled a large displacement along a narrow fault zone.

Wells, Rachel Kristen

2010-12-01T23:59:59.000Z

69

A particle bed reactor based NTP in the 112,500 N thrust class  

SciTech Connect

This paper discusses the application of a Particle bed Reactor (PBR) to a 112,500 N thrust Nuclear Thermal Propulsion (NTP) Engine. The method of analysis is described, followed by a presentation of the results. It is concluded that the PBR would result in a very competitive NTP engine. In addition, due to the high power densities possible with a PBR, high thrust/weight ratios are possible. This conclusion can be used to satisfy a variety of mission goals.

Ludewig, H.; Powell, J.R.; Lazareth, O.W. Jr.; Todosow, M.

1993-04-01T23:59:59.000Z

70

A Stochastic Model for the Angular Momentum Budget of Latitude Belts  

Science Conference Proceedings (OSTI)

The stochastic model of Weickmann et al. for the global angular momentum budget is modified to become applicable to latitude belts. In particular, a Langevin equation is added for the flux divergence of angular momentum in a belt. The friction ...

Joseph Egger

2005-07-01T23:59:59.000Z

71

Dotiki saves money and time with power tool and belt fasteners  

SciTech Connect

The use of a Hilti power tool to improve belt splice installations to minimise downtime is described. 3 photos.

Bargo, K.

2009-11-15T23:59:59.000Z

72

Non-diffusive resonant acceleration of electrons in the radiation belts  

SciTech Connect

We describe a mechanism of resonant electron acceleration by oblique high-amplitude whistler waves under conditions typical for the Earth radiation belts. We use statistics of spacecraft observations of whistlers in the Earth radiation belts to obtain the dependence of the angle {theta} between the wave-normal and the background magnetic field on magnetic latitude {lambda}. According to this statistics, the angle {theta} already approaches the resonance cone at {lambda}{approx}15 Degree-Sign and remains close to it up to {lambda}{approx}30 Degree-Sign -40 Degree-Sign on the dayside. The parallel component of the electrostatic field of whistler waves often increases around {lambda}{approx}15 Degree-Sign up to one hundred of mV/m. We show that due to this increase of the electric field, the whistler waves can trap electrons into the potential well via wave particle resonant interaction corresponding to Landau resonance. Trapped electrons then move with the wave to higher latitudes where they escape from the resonance. Strong acceleration is favored by adiabatic invariance along the increasing magnetic field, which continuously transfers the parallel energy gained to perpendicular energy, allowing resonance to be reached and maintained. The concomitant increase of the wave phase velocity allows for even stronger relative acceleration at low energy <50keV. Each trapping-escape event of electrons of {approx}10keV to 100 keV results in an energy gain of up to 100 keV in the inhomogeneous magnetic field of the Earth dipole. For electrons with initial energy below 100 keV, such rapid acceleration should hasten their drop into the loss-cone and their precipitation into the atmosphere. We discuss the role of the considered mechanism in the eventual formation of a trapped distribution of relativistic electrons for initial energies larger than 100 keV and in microbursts precipitations of lower energy particles.

Artemyev, A. V.; Krasnoselskikh, V. V.; Agapitov, O. V. [LPC2E/CNRS, University of Orleans, Orleans (France); Mourenas, D. [CEA, DAM, DIF, F-91297 Arpajon (France); Rolland, G. [CNES, Toulouse (France)

2012-12-15T23:59:59.000Z

73

Effective Conveyor Belt Inspection for Improved Mining Productivity  

SciTech Connect

This document details progress on the project entitled ''Effective Conveyor Belt Inspection for Improved Mining Productivity'' during the period from November 15, 2004 to May 14, 2004. Highlights include fabrication of an improved LED lightbar, fabrication of a line-scan sensor head for the Smart-Camera based prototype, and development of prototype vulcanized splice detection algorithms.

Chris Fromme

2006-06-01T23:59:59.000Z

74

Effective Conveyor Belt Inspection for Improved Mining Productivity  

SciTech Connect

This document details progress on the project entitled ''Effective Conveyor Belt Inspection for Improved Mining Productivity'' during the period from November 15, 2004 to May 14, 2004. Highlights include fabrication of an improved LED lightbar, fabrication of a line-scan sensor head for the Smart-Camera based prototype, and development of prototype vulcanized splice detection algorithms.

Chris Fromme

2006-06-01T23:59:59.000Z

75

A HYPOTHESIS FOR THE COLOR DIVERSITY OF THE KUIPER BELT  

SciTech Connect

We propose a chemical and dynamical process to explain the surface colors of the Kuiper belt. In our hypothesis, the initial bulk compositions of the bodies themselves can be quite diverse-as is seen in comets-but the early surface compositions are set by volatile evaporation after the objects are formed. Strong gradients in surface composition, coupled with UV and particle irradiation, lead to the surface colors that are seen today. The objects formed in the inner part of the primordial belt retain only H{sub 2}O and CO{sub 2} as the major ice species on their surfaces. Irradiation of these species plausibly results in the dark neutrally colored centaurs and Kuiper belt objects (KBOs). Object formed further in the disk retain CH{sub 3}OH, which has been shown to lead to brighter redder surfaces after irradiation, as seen in the brighter redder centaurs and KBOs. Objects formed at the current location of the cold classical Kuiper belt uniquely retain NH{sub 3}, which has been shown to affect irradiation chemistry and could plausibly lead to the unique colors of these objects. We propose observational and experimental tests of this hypothesis.

Brown, M. E.; Fraser, W. C. [Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 (United States); Schaller, E. L., E-mail: mbrown@caltech.edu [NASA Dryden Aircraft Operations Facility, Palmdale, CA 93550 (United States)

2011-10-01T23:59:59.000Z

76

Crop-Hail Damage in the Midwest Corn Belt  

Science Conference Proceedings (OSTI)

Crop-hail damage in the ten Midwest corn belt states is examined during the period 1957–81. Estimates of crop losses due to hail are made from hail insurance data for each state and each significant crop in the region. The crop-hail losses are ...

Harry J. Hillaker Jr.; Paul J. Waite

1985-01-01T23:59:59.000Z

77

Engineering Research and Development and Technology thrust area report FY92  

Science Conference Proceedings (OSTI)

The mission of the Engineering Research, Development, and Technology Program at Lawrence Livermore National Laboratory (LLNL) is to develop the technical staff and the technology needed to support current and future LLNL programs. To accomplish this mission, the Engineering Research, Development, and Technology Program has two important goals: (1) to identify key technologies and (2) to conduct high-quality work to enhance our capabilities in these key technologies. To help focus our efforts, we identify technology thrust areas and select technical leaders for each area. The thrust areas are integrated engineering activities and, rather than being based on individual disciplines, they are staffed by personnel from Electronics Engineering, Mechanical Engineering, and other LLNL organizations, as appropriate. The thrust area leaders are expected to establish strong links to LLNL program leaders and to industry; to use outside and inside experts to review the quality and direction of the work; to use university contacts to supplement and complement their efforts; and to be certain that we are not duplicating the work of others. This annual report, organized by thrust area, describes activities conducted within the Program for the fiscal year 1992. Its intent is to provide timely summaries of objectives, theories, methods, and results. The nine thrust areas for this fiscal year are: Computational Electronics and Electromagnetics; Computational Mechanics; Diagnostics and Microelectronics; Emerging Technologies; Fabrication Technology; Materials Science and Engineering; Microwave and Pulsed Power; Nondestructive Evaluation; and Remote Sensing and Imaging, and Signal Engineering.

Langland, R.T.; Minichino, C. [eds.

1993-03-01T23:59:59.000Z

78

ALICE: The Ultraviolet Imaging Spectrograph aboard the New Horizons Pluto-Kuiper Belt Mission  

E-Print Network (OSTI)

The New Horizons ALICE instrument is a lightweight (4.4 kg), low-power (4.4 Watt) imaging spectrograph aboard the New Horizons mission to Pluto/Charon and the Kuiper Belt. Its primary job is to determine the relative abundances of various species in Pluto's atmosphere. ALICE will also be used to search for an atmosphere around Pluto's moon, Charon, as well as the Kuiper Belt Objects (KBOs) that New Horizons hopes to fly by after Pluto-Charon, and it will make UV surface reflectivity measurements of all of these bodies as well. The instrument incorporates an off-axis telescope feeding a Rowland-circle spectrograph with a 520-1870 angstroms spectral passband, a spectral point spread function of 3-6 angstroms FWHM, and an instantaneous spatial field-of-view that is 6 degrees long. Different input apertures that feed the telescope allow for both airglow and solar occultation observations during the mission. The focal plane detector is an imaging microchannel plate (MCP) double delay-line detector with dual solar-blind opaque photocathodes (KBr and CsI) and a focal surface that matches the instrument's 15-cm diameter Rowland-circle. In what follows, we describe the instrument in greater detail, including descriptions of its ground calibration and initial in flight performance.

S. Alan Stern; David C. Slater; John Scherrer; John Stone; Greg Dirks; Maarten Versteeg; Michael Davis; G. R. Gladstone; Joel Wm. Parker; Leslie A. Young; O. H. W. Siegmund

2007-09-26T23:59:59.000Z

79

ALICE: The Ultraviolet Imaging Spectrograph aboard the New Horizons Pluto-Kuiper Belt Mission  

E-Print Network (OSTI)

The New Horizons ALICE instrument is a lightweight (4.4 kg), low-power (4.4 Watt) imaging spectrograph aboard the New Horizons mission to Pluto/Charon and the Kuiper Belt. Its primary job is to determine the relative abundances of various species in Pluto's atmosphere. ALICE will also be used to search for an atmosphere around Pluto's moon, Charon, as well as the Kuiper Belt Objects (KBOs) that New Horizons hopes to fly by after Pluto-Charon, and it will make UV surface reflectivity measurements of all of these bodies as well. The instrument incorporates an off-axis telescope feeding a Rowland-circle spectrograph with a 520-1870 angstroms spectral passband, a spectral point spread function of 3-6 angstroms FWHM, and an instantaneous spatial field-of-view that is 6 degrees long. Different input apertures that feed the telescope allow for both airglow and solar occultation observations during the mission. The focal plane detector is an imaging microchannel plate (MCP) double delay-line detector with dual solar-...

Stern, S Alan; Scherrer, John; Stone, John; Dirks, Greg; Versteeg, Maarten; Davis, Michael; Gladstone, G R; Parker, Joel Wm; Young, Leslie A; Siegmund, O H W

2007-01-01T23:59:59.000Z

80

Natural gas exploration associated with fracture systems in Alleghenian thrust faults in the Greenbrier Formation, southern West Virginia.  

E-Print Network (OSTI)

??A hydrocarbon play of southern West Virginia targets the intersection of thrust faults with specific Mississippian reservoirs. Typical study area wells yield initial production rates… (more)

Edmonds, Craig A.

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Detection of Small Kuiper Belt Objects by Stellar Occultations  

E-Print Network (OSTI)

Knowledge of the Kuiper Belt is currently limited to those objects that can be detected directly. Objects with diameters less than $\\sim$10km reflect too little light to be detected. These smaller bodies could contain most of the mass in the Kuiper Belt while the abundance of these bodies may constrain the distribution of mass. The overall size distribution of bodies within the Kuiper Belt can also be inferred from the relative abundances of sub-km and larger bodies. Stellar occultations are already used to study dark objects in the Solar System, such as asteroids or planetary rings. Occultation by a KBO of a size comparable to, or larger than, that of the Fresnel Scale will result in Fresnel diffraction. Detection of diffraction effects requires fast multiple-star photometry, which will be conducted in July 2007 using the Orthogonal Parallel Transfer Imaging Camera (OPTIC) mounted on the University of Hawaii 2.2m telescope on Mauna Kea. This paper details how knowledge of the mass and structure of the outer Solar System may be obtained through the detection of serendipitous stellar occultations.

R. Stevenson

2007-12-10T23:59:59.000Z

82

Detection of Small Kuiper Belt Objects by Stellar Occultations  

E-Print Network (OSTI)

Knowledge of the Kuiper Belt is currently limited to those objects that can be detected directly. Objects with diameters less than $\\sim$10km reflect too little light to be detected. These smaller bodies could contain most of the mass in the Kuiper Belt while the abundance of these bodies may constrain the distribution of mass. The overall size distribution of bodies within the Kuiper Belt can also be inferred from the relative abundances of sub-km and larger bodies. Stellar occultations are already used to study dark objects in the Solar System, such as asteroids or planetary rings. Occultation by a KBO of a size comparable to, or larger than, that of the Fresnel Scale will result in Fresnel diffraction. Detection of diffraction effects requires fast multiple-star photometry, which will be conducted in July 2007 using the Orthogonal Parallel Transfer Imaging Camera (OPTIC) mounted on the University of Hawaii 2.2m telescope on Mauna Kea. This paper details how knowledge of the mass and structure of the outer ...

Stevenson, R

2007-01-01T23:59:59.000Z

83

A Collisional Family in the Classical Kuiper Belt  

E-Print Network (OSTI)

The dynamical evolution of Classical Kuiper Belt Objects (CKBOs) divides into two parts, according to the secular theory of test particle orbits. The first part is a forced oscillation driven by the planets, while the second part is a free oscillation whose amplitude is determined by the initial orbit of the test particle. We extract the free orbital inclinations and free orbital eccentricities from the osculating elements of 125 known CKBOs. The free inclinations of 32 CKBOs strongly cluster about 2 degrees at orbital semi-major axes between 44 and 45 AU. We propose that these objects comprise a collisional family, the first so identified in the Kuiper Belt. Members of this family are plausibly the fragments of an ancient parent body having a minimum diameter of \\~800 km. This body was disrupted upon colliding with a comparably sized object, and generated ejecta having similar free inclinations. Our candidate family is dynamically akin to the Koronis family of asteroids; both families exhibit a wider range i...

Chiang, E I

2002-01-01T23:59:59.000Z

84

A Collisional Family in the Classical Kuiper Belt  

E-Print Network (OSTI)

The dynamical evolution of Classical Kuiper Belt Objects (CKBOs) divides into two parts, according to the secular theory of test particle orbits. The first part is a forced oscillation driven by the planets, while the second part is a free oscillation whose amplitude is determined by the initial orbit of the test particle. We extract the free orbital inclinations and free orbital eccentricities from the osculating elements of 125 known CKBOs. The free inclinations of 32 CKBOs strongly cluster about 2 degrees at orbital semi-major axes between 44 and 45 AU. We propose that these objects comprise a collisional family, the first so identified in the Kuiper Belt. Members of this family are plausibly the fragments of an ancient parent body having a minimum diameter of \\~800 km. This body was disrupted upon colliding with a comparably sized object, and generated ejecta having similar free inclinations. Our candidate family is dynamically akin to a sub-family of Koronis asteroids located at semi-major axes less than 2.91 AU; both families exhibit a wider range in free eccentricity than in free inclination, implying that the relative velocity between parent and projectile prior to impact lay mostly in the invariable plane of the solar system. We urge more discoveries of new CKBOs to test the reality of our candidate family and physical studies of candidate family members to probe the heretofore unseen interior of a massive, primitive planetesimal.

E. I. Chiang

2002-05-16T23:59:59.000Z

85

Numerical investigation of the thrust efficiency of a laser propelled vehicle  

DOE Green Energy (OSTI)

The flow situation for a thruster propelled by ablated gas which is energized by a laser pulse is numerically simulated. The flow is axisymmetric and nonsteady, and is assumed to be inviscid due to its high Reynolds number. The high pressure expansion of the laser heated gas generates thrust as it pushes against the vehicle. Gas expansion lateral to the thrust vector causes performance to decrease. The vehicle geometry and the laser pulse characteristics determine the degree to which the flow is one dimensional. As the thruster's parameters are varied, its impulse is calculated and compared to the limiting impulse of a one-dimensional system, and thus the thrust efficiency is computed. Lateral expansion losses computed by simulating the flow of the expanding gas time-accurately on a computer are far less than losses predicted using the method of characteristics, which is the best alternate means of computation. Flows which exhibit a substantial amount of lateral expansion can still yield an expansion efficiency which exceeds 70%. This finding has significant implications on the eventual design of flight hardware. Steger and Warming's flux split numerics for the Euler equations are modified for blast simulations into near vacuum ambient conditions. At the interface between the near vacuum ambient and the wave front, the solution is first order accurate but sufficiently robust to handle pressure ratios exceeding one million and density ratios exceeding 10,000 between the thrust gas and the ambient gas. Elsewhere the solution is second order accurate. The majority of the calculations performed assume an ideal gas equation of state with {gamma} = 1.2. The propellant Lithium Hydride has shown excellent promise in the laboratory, yielding I{sub sp} = 800-1000 sec. Equilibrium and kinetic modeling of LiH is undertaken, with a variable {gamma} of from 1.25 to 1.66 resulting from the kinetic assumptions of ionization equilibrium and frozen chemistry. These additional mechanisms are then incorporated into the efficiency calculations.

mulroy jr

1990-08-01T23:59:59.000Z

86

Research on Magnetic Signal Extracting and Filtering of Coal Mine Wire Rope Belt Conveyer Defects  

Science Conference Proceedings (OSTI)

Because of wire rope conveyer belt with high load operating and complex conditions of coal mine, it is prone to cause conveyer belt horizontal rupture. It will bring tremendous hazards for coal mine safe production. Defects of wire rope and joints displacement ...

Qinghua Mao; Hongwei Ma; Xuhui Zhang; Dawei Zhang

2011-01-01T23:59:59.000Z

87

New Directions in Polyvanadate Chemistry:From Cages and Clusters to Baskets, Belts, Bowls, and Barrels  

E-Print Network (OSTI)

New Directions in Polyvanadate Chemistry:From Cages and Clusters to Baskets, Belts, Bowls recently ex- panded beyond classical cage/cluster structures to include hitherto unknown basket, belt, bowl. Klemperer, T. A. Marquart, 0.M. Yaghi Department of Chemistry and Beckman Insitute for Advanced Science

Yaghi, Omar M.

88

What happens when the geomagnetic field reverses?  

E-Print Network (OSTI)

During geomagnetic field reversals the radiation belt high-energy proton populations become depleted. Their energy spectra become softer, with the trapped particles of highest energies being lost first, and eventually recovering after a field reversal. The radiation belts rebuild in a dynamical way with the energy spectra flattening on the average during the course of many millennia, but without ever reaching complete steady state equilibrium between successive geomagnetic storm events determined by southward turnings of the IMF orientation. Considering that the entry of galactic cosmic rays and the solar energetic particles with energies above a given threshold are strongly controlled by the intensity of the northward component of the interplanetary magnetic field, we speculate that at earlier epochs when the geomagnetic dipole was reversed, the entry of these energetic particles into the geomagnetic field was facilitated when the interplanetary magnetic field was directed northward. Unlike in other compleme...

Lemaire, Joseph F

2012-01-01T23:59:59.000Z

89

A Tropical "NAT-like" belt observed from space  

E-Print Network (OSTI)

The optical properties of cold tropical tropopause clouds are examined on a global scale, using two years of space-borne lidar observations from CALIPSO (June 2006 ? May 2008). The linear depolarization ratio, color ratio and backscatter signal are analyzed in tropical clouds colder than 200 K in a way similar to recent studies of Polar Stratospheric Clouds (PSCs). It is found that the three categories of particles encountered in PSC (Ice, Sulfate Ternary Solutions or STS, and Nitric Acid Trihydrate or NAT) do also occur in tropical cold cloud layers. Particles with optical properties similar to NAT are few, but they cover the tropical belt and represent about 20% of cold cloud tropical particles. The optical behavior of these particles requires them to be small, non-spherical, optically thin, and persistent in the TTL at temperatures colder than 200 K; NAT particles and very small ice crystals meet these criteria.

Chepfer, Hélčne; 10.1029/2008GL036289

2009-01-01T23:59:59.000Z

90

On the Plutinos and Twotinos of the Kuiper Belt  

E-Print Network (OSTI)

We illuminate dynamical properties of Kuiper Belt Objects (KBOs) in the 3:2 (``Plutino'') and 2:1 (``Twotino'') Neptunian resonances within the model of resonant capture and migration. We analyze a series of numerical integrations, each involving the 4 migratory giant planets and 400 test particles distributed throughout trans-Neptunian space, to measure efficiencies of capture as functions of migration speed. Snapshots of the spatial distribution of resonant KBOs reveal that Twotinos cluster +/- 75 degrees away from Neptune's longitude, while Plutinos cluster +/- 90 degrees away. Longitudinal clustering persists even for surveys that are not volume-limited in their ability to detect resonant KBOs. Remarkably, between -90 degrees and -60 degrees of Neptune's longitude, we find the sky density of Twotinos to nearly equal that of Plutinos, despite the greater average distance of Twotinos. We couple our findings to observations to crudely estimate that the intrinsic Twotino population is within a factor of 3 of ...

Chiang, E I

2002-01-01T23:59:59.000Z

91

Stationary Barotropic Flow Induced by a Mountain over a Tropical Belt  

Science Conference Proceedings (OSTI)

Stationary solutions in the presence of bottom topography are computed for a tropical atmospheric belt. A primitive divergent barotropic model is assumed. An iterative time-averaging method proposed by Edelmann (1972b) is used for the purpose of ...

Fredrick H. M. Semazzi

1980-07-01T23:59:59.000Z

92

The Diurnal Cycle of Land–Atmosphere Interactions across Oklahoma’s Winter Wheat Belt  

Science Conference Proceedings (OSTI)

This manuscript documents the impact of Oklahoma’s winter wheat belt (WWB) on the near-surface atmosphere by comparing the diurnal cycle of meteorological conditions within the WWB relative to conditions in adjacent counties before and after the ...

Matthew J. Haugland; Kenneth C. Crawford

2005-01-01T23:59:59.000Z

93

Circulation Regimes of Rainfall Anomalies in the African-South Asian Monsoon Belt  

Science Conference Proceedings (OSTI)

This study explores the spatial differentiation of climate anomalies and associated circulation mechanisms across the African-South Asian monsoon belt through empirical analyses mainly for the period 1948–83. Observations include surface ship ...

Uma S. Bhatt

1989-10-01T23:59:59.000Z

94

The New Horizons Pluto Kuiper belt Mission: An Overview with Historical Context  

E-Print Network (OSTI)

NASA’s New Horizons (NH) Pluto-Kuiper belt (PKB) mission was launched on 19 January 2006 on a Jupiter Gravity Assist (JGA) trajectory toward the Pluto system for a 14 July 2015 closest approach; Jupiter

S. Alan Stern A

2007-01-01T23:59:59.000Z

95

Frequency of Precipitation across the Northern U.S. Corn Belt  

Science Conference Proceedings (OSTI)

Knowledge of the frequency of precipitation events can aid in managing water resources, but little is known concerning the regional variability in the frequency of daily precipitation events in the northern U.S. Corn Belt. The frequency ...

B. S. Sharratt; J. Zandlo; G. Spoden

2001-02-01T23:59:59.000Z

96

VP 100: Brevini Wind Factory Helps Rust Belt Town's Economy | Department  

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

VP 100: Brevini Wind Factory Helps Rust Belt Town's Economy VP 100: Brevini Wind Factory Helps Rust Belt Town's Economy VP 100: Brevini Wind Factory Helps Rust Belt Town's Economy October 5, 2010 - 10:00am Addthis Brevini Wind is building a 127,000-square foot state-of-the-art factory in Muncie, Ind.| Photo courtesy of Brevini Wind Brevini Wind is building a 127,000-square foot state-of-the-art factory in Muncie, Ind.| Photo courtesy of Brevini Wind Stephen Graff Former Writer & editor for Energy Empowers, EERE What are the key facts? Brevini Wind awarded $12.8 million tax credit to build wind gear box plant Company will tap into manufacturing workforce, creating 450 jobs in next two years Faced with a recession and an auto industry that ran out gas, many manufacturing towns in the Rust Belt have reinvented themselves. Some found

97

Water Ice on the Satellite of Kuiper Belt Object 2003 EL61  

E-Print Network (OSTI)

We have obtained a near infrared spectrum of the brightest satellite of the large Kuiper Belt Object, 2003 EL61. The spectrum has absorption features at 1.5 and 2.0 microns, indicating that water ice is present on the surface. We find that the satellite's absorption lines are much deeper than water ice features typically found on Kuiper Belt Objects. We argue that the unusual spectrum indicates that the satellite was likely formed by impact and not by capture.

K. M Barkume; M. E. Brown; E. L. Schaller

2006-01-24T23:59:59.000Z

98

A novel numerical analysis of Hall Effect Thruster and its application in simultaneous design of thruster and optimal low-thrust trajectory.  

E-Print Network (OSTI)

??Hall Effect Thrusters (HETs) are a form of electric propulsion device which uses external electrical energy to produce thrust. When compared to various other electric… (more)

Kwon, Kybeom

2010-01-01T23:59:59.000Z

99

COLOR DEPENDENCE IN THE SIZE DISTRIBUTION OF MAIN BELT ASTEROIDS REVISITED  

SciTech Connect

The size distribution of the asteroid belt is examined with 16956 main belt asteroids detected in data taken from the Canada-France-Hawaii Telescope Legacy Survey in two filters (g' and r'). The cumulative H (absolute magnitude) distribution is examined in both filters, and both match well to simple power laws down to H = 17, with slopes in rough agreement with those reported the literature. This implies that disruptive collisions between asteroids are gravitationally dominated down to at least this size, and probably sub-kilometer scales. The slopes of these distributions appear shallower in the outer belt than the inner belt, and the g' distributions appear slightly steeper than the r'. The slope shallowing in the outer belt may reflect a real compositional difference: the inner asteroid belt has been suggested to consist mostly of stony and/or metallic S-type asteroids, whereas carbonaceous C-types are thought to be more prevalent further from the Sun. No waves are seen in the size distribution above H = 15. Since waves are expected to be produced at the transition from gravitationally-dominated to internal strength-dominated collisions, their absence here may imply that the transition occurs at sub-kilometer scales, much smaller than the H = 17 (diameter {approx} 1.6 km) cutoff of this study.

August, Tyler M.; Wiegert, Paul A., E-mail: tx_august@laurentian.ca [Department of Physics and Astronomy, The University of Western Ontario, London, ON N6A 3K7 (Canada)

2013-06-15T23:59:59.000Z

100

A tropical « NAT-like » belt observed from space  

E-Print Network (OSTI)

The optical properties of cold tropical tropopause clouds are examined on a global scale, using two years of space-borne lidar observations from CALIPSO (June 2006- May 2008). The linear depolarization ratio, color ratio and backscatter signal are analyzed in tropical clouds colder than 200 K in a way similar to recent studies of Polar Stratospheric Clouds (PSCs). It is found that the three categories of particles encountered in PSC (Ice, Sulfate Ternary Solutions or STS, and Nitric Acid Trihydrate or NAT) do also occur in tropical cold cloud layers. Particles with optical properties similar to NAT are few, but they cover the hal-00439695, version 1- 8 Dec 2009 tropical belt and represent about 20 % of cold cloud tropical particles all year long. The optical behavior of these particles requires them to be very small, non-spherical, optically thin, and persistent in the TTL at temperatures colder than 200 K; NAT particles and very small ice crystals meet these criteria and are right now the best candidates to explain the presented observations. 2

unknown authors

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Simulation of dynamics of radiation belt electrons during geomagnetic storms driven by high speed solar wind streams.  

E-Print Network (OSTI)

??Satellite observations have shown that fluxes of relativistic electrons in the earth's radiation belts can vary by orders of magnitude during periods of high solar… (more)

Yu, Bin

2007-01-01T23:59:59.000Z

102

THE SURFACE COMPOSITION OF LARGE KUIPER BELT OBJECT 2007 OR10  

SciTech Connect

We present photometry and spectra of the large Kuiper belt object 2007 OR10. The data show significant near-infrared absorption features due to water ice. While most objects in the Kuiper belt with water ice absorption this prominent have the optically neutral colors of water ice, 2007 OR10 is among the reddest Kuiper belt objects known. One other large Kuiper belt object-Quaoar-has similar red coloring and water ice absorption, and it is hypothesized that the red coloration of this object is due to irradiation of the small amounts of methane able to be retained on Quaoar. 2007 OR10, though warmer than Quaoar, is in a similar volatile retention regime because it is sufficiently larger that its stronger gravity can still retain methane. We propose, therefore, that the red coloration on 2007 OR10 is also caused by the retention of small amounts of methane. Positive detection of methane on 2007 OR10 will require spectra with higher signal to noise. Models for volatile retention on Kuiper belt objects appear to continue to do an excellent job reproducing all of the available observations.

Brown, M. E.; Fraser, W. C. [Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 (United States); Burgasser, A. J., E-mail: aburgasser@ucsd.edu [Center for Astrophysics and Space Science, University of California San Diego, La Jolla, CA 92093 (United States)

2011-09-10T23:59:59.000Z

103

STIS Coronagraphic Imaging of Fomalhaut: Main Belt Structure and the Orbit of Fomalhaut b  

E-Print Network (OSTI)

We present new optical coronagraphic data of the bright star Fomalhaut obtained with the HST in 2010/2012 using STIS. Fomalhaut b is recovered at both epochs to high significance. The observations include the discoveries of tenuous nebulosity beyond the main dust belt detected to at least 209 AU projected radius and a ~50 AU wide azimuthal gap in the belt northward of Fom b. The morphology of Fomalhaut b appears elliptical in the STIS detections. We show that residual noise in the processed data can plausibly result in point sources appearing extended. A MCMC analysis demonstrates that the orbit of Fom b is highly eccentric, with e=0.8+/-0.1, a=177+/-68 AU, and q = 32+/-24 AU. Fom b is apsidally aligned with the belt and 90% of allowed orbits have mutual inclination 36 deg or less. Fomalhaut b's orbit is belt-crossing in projection, but only 12% of possible orbits have nodes within a 25 AU wide belt annulus (133-158 AU). The high e invokes a dynamical history where Fom b may have experienced a significant dyn...

Kalas, Paul; Fitzgerald, Michael P; Clampin, Mark

2013-01-01T23:59:59.000Z

104

NEP for a Kuiper Belt Object Rendezvous Mission  

SciTech Connect

Kuiper Belt Objects (KBOs) are a recently-discovered set of solar system bodies which lie at about the orbit of Pluto (40 AU) out to about 100 astronomical units (AU). There are estimated to be about 100,000 KBOS with a diameter greater than 100 km. KBOS are postulated to be composed of the pristine material which formed our solar system and may even have organic materials in them. A detailed study of KBO size, orbit distribution, structure, and surface composition could shed light on the origins of the solar system and perhaps even on the origin of life in our solar system. A rendezvous mission including a lander would be needed to perform chemical analysis of the surface and sub-surface composition of KBOS. These requirements set the size of the science probe at around a ton. Mission analyses show that a fission-powered system with an electric thruster could rendezvous at 40 AU in about 13.0 years with a total {Delta}V of 46 krnk. It would deliver a 1000-kg science payload while providing ample onboard power for relaying data back to earth. The launch mass of the entire system (power, thrusters, propellant, navigation, communication, structure, science payload, etc.) would be 7984 kg if it were placed into an earth-escape trajectory (C=O). Alternatively, the system could be placed into a 700-km earth orbit with more propellant,yielding a total mass in LEO of 8618 kg, and then spiral out of earth orbit to arrive at the KBO in 14.3 years. To achieve this performance, a fission power system with 100 kW of electrical power and a total mass (reactor, shield, conversion, and radiator) of about 2350 kg. Three possible configurations are proposed: (1) a UZrH-fueled, NaK-cooled reactor with a steam Rankine conversion system, (2) a UN-fueled gas-cooled reactor with a recuperated Brayton conversion system, and (3) a UN-fueled heatpipe-cooled reactor with a recuperated Brayton conversion system. (Boiling and condensation in the Rankine system is a technical risk at present.) All three of these systems have the potential to meet the weight requirement for the trip and to be built in the near term.

HOUTS,MICHAEL G.; LENARD,ROGER X.; LIPINSKI,RONALD J.; PATTON,BRUCE; POSTON,DAVID I.; WRIGHT,STEVEN A.

1999-11-03T23:59:59.000Z

105

Gravity survey of the southwestern part of the sourthern Utah geothermal belt  

DOE Green Energy (OSTI)

A gravity survey covering an area of 6200 km/sup 2/ was made over the southwestern part of the southern Utah geothermal belt. The objective of the gravity survey is to delineate the geologic structures and assist in the understanding of the geothermal potential of the area. A total of 726 new gravity stations together with 205 existing gravity stations, are reduced to give: (1) a complete Bouguer gravity anomaly map, and (2) a fourth-order residual gravity anomaly map; both maps have a 2-mgal contour interval. The complete Bouguer gravity anomaly map shows an east-trending regional gravity belt with a total relief of about 70 mgal which crosses the central portion of the survey area. The gravity belt is attributed to a crustal lateral density variation of 0.1 gm/cc from a depth of 5 to 15 km.

Green, R.T.; Cook, K.L.

1981-03-01T23:59:59.000Z

106

Kuiper Belt Object Occultations: Expected Rates, False Positives, and Survey Design  

E-Print Network (OSTI)

A novel method of generating artificial scintillation noise is developed and used to evaluate occultation rates and false positive rates for surveys probing the Kuiper Belt with the method of serendipitous stellar occultations. A thorough examination of survey design shows that: (1) diffraction-dominated occultations are critically (Nyquist) sampled at a rate of 2 Fsu^{-1}, corresponding to 40 s^{-1} for objects at 40 AU, (2) occultation detection rates are maximized when targets are observed at solar opposition, (3) Main Belt Asteroids will produce occultations lightcurves identical to those of Kuiper Belt Objects if target stars are observed at solar elongations of: 116 deg 7-8 sigma should be adopted to ensure that viable candidate events can be disentangled from false positives.

Bickerton, Steven; Kavelaars, JJ

2009-01-01T23:59:59.000Z

107

EXPLORATION OF THE KUIPER BELT BY HIGH-PRECISION PHOTOMETRIC STELLAR OCCULTATIONS: FIRST RESULTS  

E-Print Network (OSTI)

We report here the first detection of hectometer-size objects by the method of serendipitous stellar occultation. This method consists of recording the diffraction shadow created when an object crosses the observer’s line of sight and occults the disk of a background star. One of our detections is most consistent with an object between Saturn and Uranus. The two other diffraction patterns detected are caused by Kuiper Belt objects beyond 100 AU from the Sun and hence are the farthest known objects in the solar system. These detections show that the Kuiper Belt is much more extended than previously believed and that the outer part of the disk could be composed of smaller objects than the inner part. This gives critical clues to understanding the problem of the formation of the outer planets of the solar system. Key words: Kuiper Belt — occultations — solar system: formation 1.

unknown authors

2005-01-01T23:59:59.000Z

108

A RESOLVED MILLIMETER EMISSION BELT IN THE AU Mic DEBRIS DISK  

SciTech Connect

We present imaging observations at 1.3 mm of the debris disk surrounding the nearby M-type flare star AU Mic with beam size 3'' (30 AU) from the Submillimeter Array. These data reveal a belt of thermal dust emission surrounding the star with the same edge-on geometry as the more extended scattered light disk detected at optical wavelengths. Simple modeling indicates a central radius of {approx}35 AU for the emission belt. This location is consistent with the reservoir of planetesimals previously invoked to explain the shape of the scattered light surface brightness profile through size-dependent dust dynamics. The identification of this belt further strengthens the kinship between the debris disks around AU Mic and its more massive sister star {beta} Pic, members of the same {approx}10 Myr old moving group.

Wilner, David J.; Andrews, Sean M.; MacGregor, Meredith A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Meredith Hughes, A. [Department of Astronomy, 601 Campbell Hall, University of California, Berkeley, CA 94720 (United States)

2012-04-20T23:59:59.000Z

109

KUIPER BELT OBJECT OCCULTATIONS: EXPECTED RATES, FALSE POSITIVES, AND SURVEY DESIGN  

Science Conference Proceedings (OSTI)

A novel method of generating artificial scintillation noise is developed and used to evaluate occultation rates and false positive rates for surveys probing the Kuiper Belt with the method of serendipitous stellar occultations. A thorough examination of survey design shows that (1) diffraction-dominated occultations are critically (Nyquist) sampled at a rate of 2 Fsu{sup -1}, corresponding to 40 s{sup -1} for objects at 40 AU, (2) occultation detection rates are maximized when targets are observed at solar opposition, (3) Main Belt asteroids will produce occultations light curves identical to those of Kuiper Belt Objects (KBOs) if target stars are observed at solar elongations of: 116{sup 0} {approx}7-8{sigma} should be adopted to ensure that viable candidate events can be disentangled from false positives.

Bickerton, S. J. [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States); Welch, D. L. [Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1 (Canada); Kavelaars, J. J. [Herzberg Institute of Astrophysics, Victoria, BC V9E 2E7 (Canada)], E-mail: bick@astro.princeton.edu, E-mail: welch@physics.mcmaster.ca, E-mail: JJ.Kavelaars@nrc-cnrc.gc.ca

2009-05-15T23:59:59.000Z

110

Planck intermediate results. XII: Diffuse Galactic components in the Gould Belt System  

E-Print Network (OSTI)

We perform an analysis of the diffuse low-frequency Galactic components in the Southern part of the Gould Belt system ($130^\\circ\\leq l\\leq 230^\\circ$ and $-50^\\circ\\leq b\\leq -10^\\circ$). Strong UV flux coming from the Gould Belt super-association is responsible for bright diffuse foregrounds that we observe from our position inside the system and that can help us improve our knowledge of the Galactic emission. Free-free emission and anomalous microwave emission (AME) are the dominant components at low frequencies ($\

Ade, P A R; Alves, M I R; Arnaud, M; Ashdown, M; Atrio-Barandela, F; Aumont, J; Baccigalupi, C; Banday, A J; Barreiro, R B; Bartlett, J G; Battaner, E; Bedini, L; Benabed, K; Benoît, A; Bernard, J -P; Bersanelli, M; Bonaldi, A; Bond, J R; Borrill, J; Bouchet, F R; Boulanger, F; Burigana, C; Butler, R C; Chen, X; Chiang, L -Y; Christensen, P R; Clements, D L; Colombi, S; Colombo, L P L; Coulais, A; Cuttaia, F; Davies, R D; Davis, R J; de Bernardis, P; de Zotti, G; Delabrouille, J; Dickinson, C; Diego, J M; Dobler, G; Dole, H; Donzelli, S; Doré, O; Douspis, M; Dupac, X; Enßlin, T A; Finelli, F; Forni, O; Frailis, M; Franceschi, E; Galeotta, S; Ganga, K; Génova-Santos, R T; Ghosh, T; Giard, M; Giardino, G; Giraud-Héraud, Y; González-Nuevo, J; Górski, K M; Gregorio, A; Gruppuso, A; Hansen, F K; Harrison, D; Hernández-Monteagudo, C; Hildebrandt, S R; Hivon, E; Hobson, M; Holmes, W A; Hornstrup, A; Hovest, W; Huffenberger, K M; Jaffe, T R; Jaffe, A H; Juvela, M; Keihänen, E; Keskitalo, R; Kisner, T S; Knoche, J; Kunz, M; Kurki-Suonio, H; Lagache, G; Lähteenmäki, A; Lamarre, J -M; Lasenby, A; Lawrence, C R; Leach, S; Leonardi, R; Lilje, P B; Linden-Vřrnle, M; Lubin, P M; Macías-Pérez, J F; Maffei, B; Maino, D; Mandolesi, N; Maris, M; Marshall, D J; Martin, P G; Martínez-González, E; Masi, S; Massardi, M; Matarrese, S; Mazzotta, P; Melchiorri, A; Mennella, A; Mitra, S; Miville-Deschęnes, M -A; Moneti, A; Montier, L; Morgante, G; Mortlock, D; Munshi, D; Murphy, J A; Naselsky, P; Nati, F; Natoli, P; Nřrgaard-Nielsen, H U; Noviello, F; Novikov, D; Novikov, I; Osborne, S; Oxborrow, C A; Pajot, F; Paladini, R; Paoletti, D; Peel, M; Perotto, L; Perrotta, F; Piacentini, F; Piat, M; Pierpaoli, E; Pietrobon, D; Plaszczynski, S; Pointecouteau, E; Polenta, G; Popa, L; Poutanen, T; Pratt, G W; Prunet, S; Puget, J -L; Rachen, J P; Reach, W T; Rebolo, R; Reinecke, M; Renault, C; Ricciardi, S; Ristorcelli, I; Rocha, G; Rosset, C; Rubińo-Martín, J A; Rusholme, B; Salerno, E; Sandri, M; Savini, G; Scott, D; Spencer, L; Stolyarov, V; Sudiwala, R; Suur-Uski, A -S; Sygnet, J -F; Tauber, J A; Terenzi, L; Tibbs, C T; Toffolatti, L; Tomasi, M; Tristram, M; Valenziano, L; Van Tent, B; Varis, J; Vielva, P; Villa, F; Vittorio, N; Wade, L A; Wandelt, B D; Ysard, N; Yvon, D; Zacchei, A; Zonca, A

2013-01-01T23:59:59.000Z

111

MILLIMETER IMAGING OF THE {beta} PICTORIS DEBRIS DISK: EVIDENCE FOR A PLANETESIMAL BELT  

SciTech Connect

We present observations at 1.3 mm wavelength of the {beta} Pictoris debris disk with beam size 4.''3 x 2.''6 (83 x 50 AU) from the Submillimeter Array. The emission shows two peaks separated by {approx}7'' along the disk plane, which we interpret as a highly inclined dust ring or belt. A simple model constrains the belt center to 94 {+-} 8 AU, close to the prominent break in slope of the optical scattered light. We identify this region as the location of the main reservoir of dust-producing planetesimals in the disk.

Wilner, David J.; Andrews, Sean M. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Hughes, A. Meredith [Department of Astronomy, 601 Campbell Hall, University of California, Berkeley, CA 94720 (United States)

2011-02-01T23:59:59.000Z

112

New Empirical Relationship between Thrust Coefficient and Induction Factor for the Turbulent Windmill State  

DOE Green Energy (OSTI)

Wind turbines sometimes experience the turbulent windmill state during startup or shutdown. This rarely happens during normal operation, so it has little effect on power curves or energy production. However, for completeness we need to be able to model situations where the axial induction factor exceeds 0.5. Classical momentum theory, which shows a relationship between the thrust coefficient and the axial induction factor, is not valid in this region. Glauert plotted some experimental data taken by Lock in the 1920s against this parabolic relationship and found very poor agreement for operation in this high-induction state. He proposed a new empirical relationship to fit the experimental data. Unfortunately, the new empirical curve does not account for tip or hub losses. Others have proposed multiplying the axial induction factor by the loss factor to correct the curve, but this still leaves a mathematical no-man's-land between the classical curve and the modified version of Glauert's empirical curve. The purpose of this paper is to document the derivation of a new curve that accounts for tip and hub losses and eliminates the numerical problems of the previous approaches.

Buhl, M.L., Jr.

2005-08-01T23:59:59.000Z

113

AN ASTEROID BELT INTERPRETATION FOR THE TIMING VARIATIONS OF THE MILLISECOND PULSAR B1937+21  

SciTech Connect

Pulsar timing observations have revealed companions to neutron stars that include other neutron stars, white dwarfs, main-sequence stars, and planets. We demonstrate that the correlated and apparently stochastic residual times of arrival from the millisecond pulsar B1937+21 are consistent with the signature of an asteroid belt having a total mass {approx}< 0.05 M{sub Circled-Plus }. Unlike the solar system's asteroid belt, the best fit pulsar asteroid belt extends over a wide range of radii, consistent with the absence of any shepherding companions. We suggest that any pulsar that has undergone accretion-driven spin-up and subsequently evaporated its companion may harbor orbiting asteroid mass objects. The resulting timing variations may fundamentally limit the timing precision of some of the other millisecond pulsars. Observational tests of the asteroid belt model include identifying periodicities from individual asteroids, which are difficult; testing for statistical stationarity, which becomes possible when observations are conducted over a longer observing span; and searching for reflected radio emission.

Shannon, R. M.; Cordes, J. M. [Astronomy Department, Cornell University, Ithaca, NY 14853 (United States)] [Astronomy Department, Cornell University, Ithaca, NY 14853 (United States); Metcalfe, T. S. [Space Science Institute, 4750 Walnut Street Suite 205, Boulder, CO 80301 (United States)] [Space Science Institute, 4750 Walnut Street Suite 205, Boulder, CO 80301 (United States); Lazio, T. J. W. [Jet Propulsion Laboratory, California Institute of Technology, M/S 138-308, Pasadena, CA 91109 (United States)] [Jet Propulsion Laboratory, California Institute of Technology, M/S 138-308, Pasadena, CA 91109 (United States); Cognard, I.; Desvignes, G.; Theureau, G. [LPC2E/CNRS-Universite d'Orleans, Orleans, F-45071, Cedex 2 (France)] [LPC2E/CNRS-Universite d'Orleans, Orleans, F-45071, Cedex 2 (France); Janssen, G. H.; Purver, M. B.; Stappers, B. W. [University of Manchester and Jodrell Bank Observatory, Manchester, M13 9PL (United Kingdom)] [University of Manchester and Jodrell Bank Observatory, Manchester, M13 9PL (United Kingdom); Jessner, A.; Kramer, M.; Lazaridis, K., E-mail: ryan.shannon@csiro.au, E-mail: cordes@astro.cornell.edu [Max-Planck-Institut fuer Radioastonomie, Bonn, D-53121 (Germany)

2013-03-20T23:59:59.000Z

114

The Impact of Oklahoma's Winter Wheat Belt on the Mesoscale Environment  

Science Conference Proceedings (OSTI)

Oklahoma Mesonet data were used to measure the impact of Oklahoma's winter wheat belt on the mesoscale environment from 1994 to 2001. Statistical analyses of monthly means of near-surface air temperatures demonstrated that 1) a well-defined cool ...

Renee A. McPherson; David J. Stensrud; Kenneth C. Crawford

2004-02-01T23:59:59.000Z

115

Streamer Belt Structure at Solar Minima John D. Richardson and Karolen I. Paularen  

E-Print Network (OSTI)

, formin hocks, which modify the solar wind flow and transfer kinetic energy into thermal energy, m heatingStreamer Belt Structure at Solar Minima a C John D. Richardson and Karolen I. Paularen enter from IMP 8 and Voyager 2 demonstrating the character o he current (1996) solar minimum and compare

Richardson, John

116

High-temperature deformation in the Neoproterozoic transpressional Ribeira belt, southeast Brazil  

E-Print Network (OSTI)

High-temperature deformation in the Neoproterozoic transpressional Ribeira belt, southeast Brazil^ncias da Universidade de Sa~o Paulo, Rua do Lago 562, Cep: 05508-080, Sa~o Paulo, SP, Brazil b Laboratoire Geologia, Universidade Federal de Ouro Preto, 35400-000, Ouro Pre^to, MG, Brazil Received 5 April 2001

Bascou, JĂ©rĂ´me

117

Factors controlling the evolution of the Perdido Fold Belt, northwestern Gulf of Mexico, determined  

E-Print Network (OSTI)

Factors controlling the evolution of the Perdido Fold Belt, northwestern Gulf of Mexico, determined) is a prominent salt- cored deep water structure in the northwestern Gulf of Mexico. It is characterized of the Gulf of Mexico show that toe-of-slope folding is a viable mechanism to develop diapirs in the deep salt

Beaumont, Christopher

118

Young close-by neutron stars: the Gould Belt vs. the Galacic disc  

E-Print Network (OSTI)

and in the Belt and have been estimated from available SN progenitors counts (Tammann et al., 1994 and Grenier formation in . 1 kpc around the Sun. Originally this idea has been suggested by Grenier (2000) and Gehrels their cooling model to our disposal. SP thanks Isabelle Grenier for discus- sions. The work of MP and SP

Popov, Sergei

119

Conceptual Engine System Design for NERVA derived 66.7KN and 111.2KN Thrust Nuclear Thermal Rockets  

Science Conference Proceedings (OSTI)

The Nuclear Thermal Rocket concept is being evaluated as an advanced propulsion concept for missions to the moon and Mars. A tremendous effort was undertaken during the 1960's and 1970's to develop and test NERVA derived Nuclear Thermal Rockets in the 111.2 KN to 1112 KN pound thrust class. NASA GRC is leveraging this past NTR investment in their vehicle concepts and mission analysis studies, and has been evaluating NERVA derived engines in the 66.7 KN to the 111.2 KN thrust range. The liquid hydrogen propellant feed system, including the turbopumps, is an essential component of the overall operation of this system. The NASA GRC team is evaluating numerous propellant feed system designs with both single and twin turbopumps. The Nuclear Engine System Simulation code is being exercised to analyze thermodynamic cycle points for these selected concepts. This paper will present propellant feed system concepts and the corresponding thermodynamic cycle points for 66.7 KN and 111.2 KN thrust NTR engine systems. A pump out condition for a twin turbopump concept will also be evaluated, and the NESS code will be assessed against the Small Nuclear Rocket Engine preliminary thermodynamic data.

Fittje, James E. [Analex Corporation, Cleveland Ohio (United States); Buehrle, Robert J. [NASA Glenn Research Center, Brookpark Ohio 44135 (United States)

2006-01-20T23:59:59.000Z

120

PRELIMINARY ANALYSIS OF WISE/NEOWISE 3-BAND CRYOGENIC AND POST-CRYOGENIC OBSERVATIONS OF MAIN BELT ASTEROIDS  

Science Conference Proceedings (OSTI)

We present preliminary diameters and albedos for 13511 Main Belt asteroids (MBAs) that were observed during the 3-Band Cryo phase of the Wide-field Infrared Survey Explorer (WISE; after the outer cryogen tank was exhausted) and as part of the NEOWISE Post-Cryo Survey (after the inner cryogen tank was exhausted). With a reduced or complete loss of sensitivity in the two long wavelength channels of WISE, the uncertainty in our fitted diameters and albedos is increased to {approx}20% for diameter and {approx}40% for albedo. Diameter fits using only the 3.4 and 4.6 {mu}m channels are shown to be dependent on the literature optical H absolute magnitudes. These data allow us to increase the number of size estimates for large MBAs which have been identified as members of dynamical families. We present thermal fits for 14 asteroids previously identified as the parents of a dynamical family that were not observed during the fully cryogenic mission.

Masiero, Joseph R.; Mainzer, A. K.; Bauer, J. M.; Cabrera, M. S. [Jet Propulsion Laboratory/California Institute of Technology, 4800 Oak Grove Dr., MS 321-520, Pasadena, CA 91109 (United States); Grav, T. [Planetary Science Institute, Tucson, AZ 85719 (United States); Cutri, R. M. [Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125 (United States); Nugent, C., E-mail: Joseph.Masiero@jpl.nasa.gov [Department of Earth and Space Sciences, University of California, Los Angeles, CA 90095 (United States)

2012-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Detectability of Occultation of Stars by Objects in the Kuiper Belt and Oort Cloud  

E-Print Network (OSTI)

The serendipitous detection of stellar occultations by Outer Solar System objects is a powerful method for ascertaining the small end ($r \\lesssim 15$ km) of the size distribution of Kuiper Belt Objects and may potentially allow the exploration of objects as far out as the Oort Cloud. The design and implementation of an occultation survey is aided by a detailed understanding of how diffraction and observational parameters affect the detection of occultation events. In this study, stellar occultations are simulated, accounting for diffraction effects, finite source sizes, finite bandwidths, stellar spectra, sampling, and signal-to-noise. Finally, the possibility of detecting small Outer Solar System objects from the Kuiper Belt all the way out to the Oort Cloud is explored for three photometric systems: a proposed space telescope, Whipple (Kaplan et al. 2003), the Taiwanese-American Occultation Survey (Lehner et al. 2006), and the Multi Mirror Telescope (Bianco 2007).

T. C. Nihei; M. J. Lehner; F. B. Bianco; S. -K. King; J. M. Giammarco; C. Alcock

2007-03-19T23:59:59.000Z

122

Volterra network modeling of the nonlinear finite-impulse reponse of the radiation belt flux  

Science Conference Proceedings (OSTI)

We show how a general class of spatio-temporal nonlinear impulse-response forecast networks (Volterra networks) can be constructed from a taxonomy of nonlinear autoregressive integrated moving average with exogenous inputs (NAR-MAX) input-output equations, and used to model the evolution of energetic particle f uxes in the Van Allen radiation belts. We present initial results for the nonlinear response of the radiation belts to conditions a month earlier. The essential features of spatio-temporal observations are recovered with the model echoing the results of state space models and linear f nite impulse-response models whereby the strongest coupling peak occurs in the preceding 1-2 days. It appears that such networks hold promise for the development of accurate and fully data-driven space weather modelling, monitoring and forecast tools.

Taylor, M.; Daglis, I. A.; Anastasiadis, A. [Institute for Space Applications and Remote Sensing(ISARS), National Observatory of Athens (NOA), Metaxa and Vasillis Pavlou Street, Penteli, Athens 15236 (Greece); Vassiliadis, D. [Department of Physics, Hodges Hall, PO Box 6315, West Virginia University, Morgantown, WV 26506-6315 (United States)

2011-01-04T23:59:59.000Z

123

A density-temperature description of the outer electron radiation belt during geomagnetic storms  

Science Conference Proceedings (OSTI)

Electron flux measurements from 7 satellites in geosynchronous orbit from 1990-2007 are fit with relativistic bi-Maxwellians, yielding a number density n and temperature T description of the outer electron radiation belt. For 54.5 spacecraft years of measurements the median value ofn is 3.7x10-4 cm-3 and the median value ofT is 142 keY. General statistical properties of n, T, and the 1.1-1.5 MeV flux J are investigated, including local-time and solar-cycle dependencies. Using superposed-epoch analysis triggered on storm onset, the evolution of the outer electron radiation belt through high-speed-steam-driven storms is investigated. The number density decay during the calm before the storm is seen, relativistic-electron dropouts and recoveries from dropout are investigated, and the heating of the outer electron radiation belt during storms is examined. Using four different triggers (SSCs, southward-IMF CME sheaths, southward-IMF magnetic clouds, and minimum Dst), CME-driven storms are analyzed with superposed-epoch techniques. For CME-driven storms an absence of a density decay prior to storm onset is found, the compression of the outer electron radiation belt at time of SSC is analyzed, the number-density increase and temperature decrease during storm main phase is seen, and the increase in density and temperature during storm recovery phase is observed. Differences are found between the density-temperature and the flux descriptions, with more information for analysis being available in the density-temperature description.

Borovsky, Joseph E [Los Alamos National Laboratory; Cayton, Thomas E [Los Alamos National Laboratory; Denton, Michael H [LANCASTER UNIV

2009-01-01T23:59:59.000Z

124

A POSSIBLE DIVOT IN THE SIZE DISTRIBUTION OF THE KUIPER BELT'S SCATTERING OBJECTS  

Science Conference Proceedings (OSTI)

Via joint analysis of a calibrated telescopic survey, which found scattering Kuiper Belt objects, and models of their expected orbital distribution, we explore the scattering-object (SO) size distribution. Although for D > 100 km the number of objects quickly rise as diameters decrease, we find a relative lack of smaller objects, ruling out a single power law at greater than 99% confidence. After studying traditional ''knees'' in the size distribution, we explore other formulations and find that, surprisingly, our analysis is consistent with a very sudden decrease (a divot) in the number distribution as diameters decrease below 100 km, which then rises again as a power law. Motivated by other dynamically hot populations and the Centaurs, we argue for a divot size distribution where the number of smaller objects rises again as expected via collisional equilibrium. Extrapolation yields enough kilometer-scale SOs to supply the nearby Jupiter-family comets. Our interpretation is that this divot feature is a preserved relic of the size distribution made by planetesimal formation, now ''frozen in'' to portions of the Kuiper Belt sharing a ''hot'' orbital inclination distribution, explaining several puzzles in Kuiper Belt science. Additionally, we show that to match today's SO inclination distribution, the supply source that was scattered outward must have already been vertically heated to the of order 10 Degree-Sign .

Shankman, C.; Gladman, B. J. [Department of Physics and Astronomy, University of British Columbia, 6224 Agriculture Road, Vancouver, BC V6T 1Z1 (Canada); Kaib, N. [Department of Physics and Astronomy, Queens University (Canada); Kavelaars, J. J. [National Research Council of Canada, Victoria, BC V9E 2E7 (Canada); Petit, J. M. [Institut UTINAM, CNRS-Universite de Franche-Comte, Besancon (France)

2013-02-10T23:59:59.000Z

125

Examining the specific entropy (density of adiabatic invariants) of the outer electron radiation belt  

Science Conference Proceedings (OSTI)

Using temperature and number-density measurements of the energetic-electron population from multiple spacecraft in geosynchronous orbit, the specific entropy S = T/n{sup 2/3} of the outer electron radiation belt is calculated. Then 955,527 half-hour-long data intervals are statistically analyzed. Local-time and solar-cycle variations in S are examined. The median value of the specific entropy (2.8 x 10{sup 7} eVcm{sup 2}) is much larger than the specific entropy of other particle populations in and around the magnetosphere. The evolution of the specific entropy through high-speed-stream-driven geomagnetic storms and through magnetic-cloud-driven geomagnetic storms is studied using superposed-epoch analysis. For high-speed-stream-driven storms, systematic variations in the entropy associated with electron loss and gain and with radiation-belt heating are observed in the various storm phases. For magnetic-cloud-driven storms, multiple trigger choices for the data superpositions reveal the effects of interplanetary shock arrival, sheath driving, cloud driving, and recovery phase. The specific entropy S = T/n{sup 2/3} is algebraically expressed in terms of the first and second adiabatic invariants of the electrons: this allows a relativistic expression for S in terms of T and n to be derived. For the outer electron radiation belt at geosynchronous orbit, the relativistic corrections to the specific entropy expression are -15%.

Borovsky, Joseph E [Los Alamos National Laboratory; Denton, Michael H [LANCASTER UNIV

2008-01-01T23:59:59.000Z

126

The New Horizons Pluto Kuiper belt Mission: An Overview with Historical Context  

E-Print Network (OSTI)

NASA's New Horizons (NH) Pluto-Kuiper belt (PKB) mission was launched on 19 January 2006 on a Jupiter Gravity Assist (JGA) trajectory toward the Pluto system for a 14 July 2015 closest approach; Jupiter closest approach occurred on 28 February 2007. It was competitively selected by NASA for development on 29 November 2001. New Horizons is the first mission to the Pluto system and the Kuiper belt; and will complete the reconnaissance of the classical planets. The ~400 kg spacecraft carries seven scientific instruments, including imagers, spectrometers, radio science, a plasma and particles suite, and a dust counter built by university students. NH will study the Pluto system over a 5-month period beginning in early 2015. Following Pluto, NH will go on to reconnoiter one or two 30-50 kilometer diameter Kuiper belt Objects (KBOs), if NASA approves an extended mission. If successful, NH will represent a watershed development in the scientific exploration of a new class of bodies in the solar system - dwarf planet...

Stern, S Alan

2007-01-01T23:59:59.000Z

127

The New Horizons Pluto Kuiper belt Mission: An Overview with Historical Context  

E-Print Network (OSTI)

NASA's New Horizons (NH) Pluto-Kuiper belt (PKB) mission was launched on 19 January 2006 on a Jupiter Gravity Assist (JGA) trajectory toward the Pluto system for a 14 July 2015 closest approach; Jupiter closest approach occurred on 28 February 2007. It was competitively selected by NASA for development on 29 November 2001. New Horizons is the first mission to the Pluto system and the Kuiper belt; and will complete the reconnaissance of the classical planets. The ~400 kg spacecraft carries seven scientific instruments, including imagers, spectrometers, radio science, a plasma and particles suite, and a dust counter built by university students. NH will study the Pluto system over a 5-month period beginning in early 2015. Following Pluto, NH will go on to reconnoiter one or two 30-50 kilometer diameter Kuiper belt Objects (KBOs), if NASA approves an extended mission. If successful, NH will represent a watershed development in the scientific exploration of a new class of bodies in the solar system - dwarf planets, of worlds with exotic volatiles on their surfaces, of rapidly (possibly hydrodynamically) escaping atmospheres, and of giant impact derived satellite systems. It will also provide the first dust density measurements beyond 18 AU, cratering records that shed light on both the ancient and present-day KB impactor population down to tens of meters, and a key comparator to the puzzlingly active, former dwarf planet (now satellite of Neptune) called Triton, which is as large as Eris and Pluto.

S. Alan Stern

2007-09-27T23:59:59.000Z

128

A Single Universal Force Field Can Uniquely Orient Non-Symmetric Parts  

E-Print Network (OSTI)

of Washington, Seattle, WA 98195-2500, karl@ee.washington.edu ¤ Department of Computer Science, Dartmouth College, Hanover, NH 03755-3510, brd@cs.dartmouth.edu ¥ Department of Computer Science, Rice University grippers, conveyor belts, or vibratory bowl feeders, these devices generate force fields in which the parts

Richardson, David

129

Formation of Kuiper-belt binaries through multiple chaotic scattering encounters with low-mass intruders  

E-Print Network (OSTI)

The discovery that many trans-neptunian objects exist in pairs, or binaries, is proving invaluable for shedding light on the formation, evolution and structure of the outer Solar system. Based on recent systematic searches it has been estimated that up to 10% of Kuiper-belt objects might be binaries. However, all examples discovered to-date are unusual, as compared to near-Earth and main-belt asteroid binaries, for their mass ratios of order unity and their large, eccentric orbits. In this article we propose a common dynamical origin for these compositional and orbital properties based on four-body simulations in the Hill approximation. Our calculations suggest that binaries are produced through the following chain of events: initially, long-lived quasi-bound binaries form by two bodies getting entangled in thin layers of dynamical chaos produced by solar tides within the Hill sphere. Next, energy transfer through gravitational scattering with a low-mass intruder nudges the binary into a nearby non-chaotic, stable zone of phase space. Finally, the binary hardens (loses energy) through a series of relatively gentle gravitational scattering encounters with further intruders. This produces binary orbits that are well fitted by Kepler ellipses. Dynamically, the overall process is strongly favored if the original quasi-bound binary contains comparable masses. We propose a simplified model of chaotic scattering to explain these results. Our findings suggest that the observed preference for roughly equal mass ratio binaries is probably a real effect; that is, it is not primarily due to an observational bias for widely separated, comparably bright objects. Nevertheless, we predict that a sizeable population of very unequal mass Kuiper-belt binaries is likely awaiting discovery.

Sergey A. Astakhov; Ernestine A. Lee; David Farrelly

2005-04-04T23:59:59.000Z

130

Passenger vehicle tire rolling resistance can be predicted from a flat-belt test rig  

Science Conference Proceedings (OSTI)

The rolling resistance of fifteen different types of tire was determined on-road by coastdown tests, using several vehicles variously fitted with 14 and 15 inch wheels. Corrections for tire pressure, and for external temperature, were deduced by data regression. The rolling resistance of the same tires was measured on a flat-belt tire test machine, and correction for tire pressure was determined in a like manner. In this paper, the results, in terms of the characteristic rolling resistance, are compared between rig and road. The various test procedures are discussed.

Ivens, J.

1989-01-01T23:59:59.000Z

131

A single sub-km Kuiper Belt object from a stellar Occultation in archival data  

E-Print Network (OSTI)

The Kuiper belt is a remnant of the primordial Solar System. Measurements of its size distribution constrain its accretion and collisional history, and the importance of material strength of Kuiper belt objects (KBOs). Small, sub-km sized, KBOs elude direct detection, but the signature of their occultations of background stars should be detectable. Observations at both optical and X-ray wavelengths claim to have detected such occultations, but their implied KBO abundances are inconsistent with each other and far exceed theoretical expectations. Here, we report an analysis of archival data that reveals an occultation by a body with a 500 m radius at a distance of 45 AU. The probability of this event to occur due to random statistical fluctuations within our data set is about 2%. Our survey yields a surface density of KBOs with radii larger than 250 m of 2.1^{+4.8}_{-1.7} x 10^7 deg^{-2}, ruling out inferred surface densities from previous claimed detections by more than 5 sigma. The fact that we detected only ...

Schlichting, H E; Wenz, M; Sari, R; Gal-Yam, A; Livio, M; Nelan, E; Zucker, S

2009-01-01T23:59:59.000Z

132

Multiaxis Thrust-Vectoring Characteristics of a Model Representative of the F-18 High-Alpha Research Vehicle at Angles of Attack From 0 to 70  

Science Conference Proceedings (OSTI)

An investigation was conducted in the Langley 16-Foot Transonic Tunnel to determine the multiaxis thrust-vectoring characteristics of the F-18 High-Alpha Research Vehicle (HARV). A wingtip supported, partially metric, 0.10-scale jet-effects model of ...

Asbury Scott C.; Capone Francis J.

1995-12-01T23:59:59.000Z

133

On the generation of large amplitude spiky solitons by ultralow frequency earthquake emission in the Van Allen radiation belt  

Science Conference Proceedings (OSTI)

The parametric coupling between earthquake emitted circularly polarized electromagnetic radiation and ponderomotively driven ion-acoustic perturbations in the Van Allen radiation belt is considered. A cubic nonlinear Schroedinger equation for the modulated radiation envelope is derived, and then solved analytically. For ultralow frequency earthquake emissions large amplitude spiky supersonic bright solitons or subsonic dark solitons are found to be generated in the Van Allen radiation belt, detection of which can be a tool for the prediction of a massive earthquake may be followed later.

Mofiz, U. A. [School of Science and Technology, Bangladesh Open University, Gazipur-1705 (Bangladesh)

2006-08-15T23:59:59.000Z

134

INITIAL PLANETESIMAL SIZES AND THE SIZE DISTRIBUTION OF SMALL KUIPER BELT OBJECTS  

SciTech Connect

The Kuiper Belt is a remnant from the early solar system and its size distribution contains many important constraints that can be used to test models of planet formation and collisional evolution. We show, by comparing observations with theoretical models, that the observed Kuiper Belt size distribution is well matched by coagulation models, which start with an initial planetesimal population with radii of about 1 km, and subsequent collisional evolution. We find that the observed size distribution above R {approx} 30 km is primordial, i.e., it has not been modified by collisional evolution over the age of the solar system, and that the size distribution below R {approx} 30 km has been modified by collisions and that its slope is well matched by collisional evolution models that use published strength laws. We investigate in detail the resulting size distribution of bodies ranging from 0.01 km to 30 km and find that its slope changes several times as a function of radius before approaching the expected value for an equilibrium collisional cascade of material strength dominated bodies for R {approx}< 0.1 km. Compared to a single power-law size distribution that would span the whole range from 0.01 km to 30 km, we find in general a strong deficit of bodies around R {approx} 10 km and a strong excess of bodies around 2 km in radius. This deficit and excess of bodies are caused by the planetesimal size distribution left over from the runaway growth phase, which left most of the initial mass in small planetesimals while only a small fraction of the total mass is converted into large protoplanets. This excess mass in small planetesimals leaves a permanent signature in the size distribution of small bodies that is not erased after 4.5 Gyr of collisional evolution. Observations of the small Kuiper Belt Object (KBO) size distribution can therefore test if large KBOs grew as a result of runaway growth and constrained the initial planetesimal sizes. We find that results from recent KBO occultation surveys and the observed KBO size distribution can be best matched by an initial planetesimal population that contained about equal mass per logarithmic mass bin in bodies ranging from 0.4 km to 4 km in radius. We further find that we cannot match the observed KBO size distribution if most of the planetesimal mass was contained in bodies that were 10 km in radius or larger simply because their resulting size distribution cannot be sufficiently depleted over 4.5 Gyr to match observations.

Schlichting, Hilke E. [UCLA, Department of Earth and Space Science, 595 Charles E. Young Drive East, Los Angeles, CA 90095 (United States); Fuentes, Cesar I.; Trilling, David E., E-mail: hilke@ucla.edu [Department of Physics and Astronomy, Northern Arizona University, P.O. Box 6010, Flagstaff, AZ 86011 (United States)

2013-08-01T23:59:59.000Z

135

Warm conveyor belts in the ERA-Interim data set (1979-2010). Part I: Climatology and potential vorticity evolution.  

Science Conference Proceedings (OSTI)

A global climatology of warm conveyor belts (WCBs) is presented for the years 1979-2010, based upon trajectories calculated with ERA-Interim reanalyses. WCB trajectories are identified as strongly ascending air parcels (600 hPa in 2 days) near ...

Erica Madonna; Heini Wernli; Hanna Joos; Olivia Martius

136

1Electricity from Sunlight: The RBSP Spacecraft Solar Panels NASA's twin Radiation Belts Storm Probe (RBSP) spacecraft will be  

E-Print Network (OSTI)

satellite to the nearest hundred watts? Space Math http://spacemath.gsfc.nasa.gov #12;Answer Key 1 Problem 11Electricity from Sunlight: The RBSP Spacecraft Solar Panels NASA's twin Radiation Belts Storm of the 10 solar cells in square-meters? Problem 3 ­ The amount of electrical power generated by a solar

137

LANL LDRD-funded project: Test particle simulations of energetic ions in natural and artificial radiation belts  

Science Conference Proceedings (OSTI)

We summarize the scientific problem and work plan for the LANL LDRD-funded project to use a test particle code to study the sudden de-trapping of inner belt protons and possible cross-L transport of debris ions after a high altitude nuclear explosion (HANE). We also discuss future application of the code for other HANE-related problems.

Cowee, Misa [Los Alamos National Laboratory; Liu, Kaijun [Los Alamos National Laboratory; Friedel, Reinhard H. [Los Alamos National Laboratory; Reeves, Geoffrey D. [Los Alamos National Laboratory

2012-07-17T23:59:59.000Z

138

Dynamic Aspects of the Impact of the Use of Perfect Climate Forecasts in the Corn Belt Region  

Science Conference Proceedings (OSTI)

A general equilibrium model is linked to a decision model to determine the impact of perfect growing season forecasts for corn produced in the Corn Belt region over a 10-yr period. Five different timing scenarios are examined to determine the ...

James W. Mjelde; John B. Penson Jr.; Clair J. Nixon

2000-01-01T23:59:59.000Z

139

HEPPA 2011 Session 3. 3.6 Radiation belt electron precipitation due to geomagnetic storms: significance to middle  

E-Print Network (OSTI)

HEPPA 2011 Session 3. 3.6 Radiation belt electron precipitation due to geomagnetic storms, Sodankyl¨a, Finland Geomagnetic storms triggered by coronal mass ejections and high-speed solar-90 km altitudes) as a result of a single geomagnetic storm. The study condi- tions were chosen

Ulich, Thomas

140

A Pacific Moisture Conveyor Belt and Its Relationship to a Significant Precipitation Event in the Semiarid Southwestern United States  

Science Conference Proceedings (OSTI)

In this study the term moisture conveyor belt (MCB) is defined as an elongated band of enhanced poleward water vapor fluxes (WVFs) above the PBL that is rooted in the Tropics. This new terminology is illustrated through an exemplary detailed case ...

Peter Knippertz; Jonathan E. Martin

2007-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" from the National Library of EnergyBeta (NLEBeta).
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141

The JCMT Gould Belt Survey: SCUBA-2 observations of radiative feedback in NGC1333  

E-Print Network (OSTI)

We present observations of NGC1333 from SCUBA-2 on JCMT, observed as a JCMT Gould Belt Survey pilot project during the shared risk campaign when the first of four arrays was installed at each of 450 and 850 microns. Temperature maps are derived from 450 micron and 850 micron ratios under the assumption of constant dust opacity spectral index beta=1.8. Temperatures indicate that the dust in the northern (IRAS 6/8) region of NGC1333 is hot, 20-40 K, due to heating by the B star SVS3, other young stars in the IR/optically visible cluster, and embedded protostars. Other luminous protostars are also identified by temperature rises at the 17" resolution of the ratio maps (0.02 pc assuming a distance of 250 pc for Perseus). The extensive heating raises the possibility that the radiative feedback may lead to increased masses for the next generation of stars.

Hatchell, J; Drabek, E; Curtis, E; Richer, J; Nutter, D; Di Francesco, J

2012-01-01T23:59:59.000Z

142

Ralph: A Visible/Infrared Imager for the New Horizons Pluto/Kuiper Belt Mission  

E-Print Network (OSTI)

The New Horizons instrument named Ralph is a visible/near infrared multi-spectral imager and a short wavelength infrared spectral imager. It is one of the core instruments on New Horizons, NASA's first mission to the Pluto/Charon system and the Kuiper Belt. Ralph combines panchromatic and color imaging capabilities with IR imaging spectroscopy. Its primary purpose is to map the surface geology and composition of these objects, but it will also be used for atmospheric studies and to map the surface temperature. It is a compact, low-mass (10.5 kg), power efficient (7.1 W peak), and robust instrument with good sensitivity and excellent imaging characteristics. Other than a door opened once in flight, it has no moving parts. These characteristics and its high degree of redundancy make Ralph ideally suited to this long-duration flyby reconnaissance mission.

Reuter, Dennis C; Scherrer, John; Jennings, Donald E; Baer, James; Hanley, John; Hardaway, Lisa; Lunsford, Allen; McMuldroch, Stuart; Moore, Jeffrey; Olkin, Cathy; Parizek, Robert; Reitsma, Harold; Sabatke, Derek; Spencer, John; Stone, John; Throop, Henry; Van Cleve, Jeffrey; Weigle, Gerald E; Young, Leslie A

2007-01-01T23:59:59.000Z

143

Ralph: A Visible/Infrared Imager for the New Horizons Pluto/Kuiper Belt Mission  

E-Print Network (OSTI)

The New Horizons instrument named Ralph is a visible/near infrared multi-spectral imager and a short wavelength infrared spectral imager. It is one of the core instruments on New Horizons, NASA's first mission to the Pluto/Charon system and the Kuiper Belt. Ralph combines panchromatic and color imaging capabilities with IR imaging spectroscopy. Its primary purpose is to map the surface geology and composition of these objects, but it will also be used for atmospheric studies and to map the surface temperature. It is a compact, low-mass (10.5 kg), power efficient (7.1 W peak), and robust instrument with good sensitivity and excellent imaging characteristics. Other than a door opened once in flight, it has no moving parts. These characteristics and its high degree of redundancy make Ralph ideally suited to this long-duration flyby reconnaissance mission.

Dennis C. Reuter; S. Alan Stern; John Scherrer; Donald E. Jennings; James Baer; John Hanley; Lisa Hardaway; Allen Lunsford; Stuart McMuldroch; Jeffrey Moore; Cathy Olkin; Robert Parizek; Harold Reitsma; Derek Sabatke; John Spencer; John Stone; Henry Throop; Jeffrey Van Cleve; Gerald E. Weigle; Leslie A. Young

2007-09-26T23:59:59.000Z

144

Precipitation of radiation belt electrons by EMIC waves, observed from ground and space  

Science Conference Proceedings (OSTI)

We show evidence that left-hand polarised electromagnetic ion cyclotron (EMIC) plasma waves can cause the loss of relativistic electrons into the atmosphere. Our unique set of ground and satellite observations shows coincident precipitation of ions with energies of tens of keY and of relativistic electrons into an isolated proton aurora. The coincident precipitation was produced by wave-particle interactions with EMIC waves near the plasmapause. The estimation of pitch angle diffusion coefficients supports that the observed EMIC waves caused coincident precipitation ofboth ions and relativistic electrons. This study clarifies that ions with energies of tens of ke V affect the evolution of relativistic electrons in the radiation belts via cyclotron resonance with EMIC waves, an effect that was first theoretically predicted in the early 1970's.

Jordanova, Vania K [Los Alamos National Laboratory; Miyoski, Y [NAGOYA UNIV; Sakaguchi, K [NAGOYA UNIV; Shiokawa, K [NAGOYA UNIV; Evans, D S [NOAA, BOULDER; Albert, Jay [AFRL; Connors, M [UNIV OF ATHABASCA

2008-01-01T23:59:59.000Z

145

STRATIGRAPHY OF COUNTER-POINT-BAR AND EDDY-ACCRETION DEPOSITS IN LOW-ENERGY MEANDER BELTS OF THE PEACE-ATHABASCA  

E-Print Network (OSTI)

STRATIGRAPHY OF COUNTER-POINT-BAR AND EDDY-ACCRETION DEPOSITS IN LOW-ENERGY MEANDER BELTS-7th Ave. SW, Nexen Inc., Calgary, AB, T2P 3P7, Canada ABSTRACT: Previously termed concave bank

146

Warm conveyor belts in the ERA-Interim data set (1979-2010). Part II: Moisture origin and relevance for precipitation  

Science Conference Proceedings (OSTI)

The role of moisture for extratropical atmospheric dynamics is particularly pronounced within warm conveyor belts (WCBs), which are characterized by intense latent heat release and precipitation formation. Based on the WCB climatology for the ...

Stephan Pfahl; Erica Madonna; Maxi Boettcher; Hanna Joos; Heini Wernli

147

Synoptic Circulation and Land Surface Influences on Convection in the Midwest U.S. “Corn Belt” during the Summers of 1999 and 2000. Part I: Composite Synoptic Environments  

Science Conference Proceedings (OSTI)

In the Midwest U.S. Corn Belt, the 1999 and 2000 summer seasons (15 June–15 September) expressed contrasting spatial patterns and magnitudes of precipitation (1999: dry; 2000: normal to moist). Distinct from the numerical modeling approach often ...

Andrew M. Carleton; David L. Arnold; David J. Travis; Steve Curran; Jimmy O. Adegoke

2008-07-01T23:59:59.000Z

148

HIGH-ALBEDO C-COMPLEX ASTEROIDS IN THE OUTER MAIN BELT: THE NEAR-INFRARED SPECTRA  

SciTech Connect

Primitive, outer-belt asteroids are generally of low albedo, reflecting carbonaceous compositions like those of CI and CM meteorites. However, a few outer-belt asteroids having high albedos are known, suggesting the presence of unusually reflective surface minerals or, conceivably, even exposed water ice. Here, we present near-infrared (1.1-2.5 {mu}m) spectra of four outer-belt C-complex asteroids with albedos {>=}0.1. We find no absorption features characteristic of water ice (near 1.5 and 2.0 {mu}m) in the objects. Intimate mixture models set limits to the water ice by weight {<=}2%. Asteroids (723) Hammonia and (936) Kunigunde are featureless and have (60%-95%) amorphous Mg pyroxenes that might explain the high albedos. Asteroid (1276) Ucclia also shows a featureless reflection spectrum with (50%-60%) amorphous Mg pyroxenes. Asteroid (1576) Fabiola shows a possible weak, broad absorption band (1.5-2.1 {mu}m). The feature can be reproduced by (80%) amorphous Mg pyroxenes or orthopyroxene (crystalline silicate), either of which is likely to cause its high albedo. We discuss the origin of high-albedo components in primitive asteroids.

Kasuga, Toshihiro [Public Relations Center, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Usui, Fumihiko; Hasegawa, Sunao [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210 (Japan); Ootsubo, Takafumi [Astronomical Institute, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578 (Japan); Kuroda, Daisuke, E-mail: toshi.kasuga@nao.ac.jp [Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, 3037-5 Honjo, Kamogata, Asakuchi, Okayama 719-0232 (Japan)

2013-07-01T23:59:59.000Z

149

Twin-belt continuous caster with containment and cooling of the exiting cast product for enabling high-speed casting of molten-center product  

DOE Patents (OSTI)

In continuously casting molten metal into cast product by a twin-belt machine, it is desirable to achieve dramatic increases in speed (linear feet per minute) at which cast product exits the machine, particularly in installations where steel cast product is intended to feed a downstream regular rolling mill (as distinct from a planetary mill) operating in tandem with the twin-belt caster. Such high-speed casting produces product with a relatively thin shell and molten interior, and the shell tends to bulge outwardly due to metallostatic head pressure of the molten center. A number of cooperative features enable high-speed, twin-belt casting: (1) Each casting belt is slidably supported adjacent to the caster exit pulley for bulge control and enhanced cooling of cast product. (2) Lateral skew steering of each belt provides an effective increase in moving mold length plus a continuity of heat transfer not obtained with prior art belt steering apparatus. (3) The exiting slab is contained and supported downstream from the casting machine to prevent bulging of the shell of the cast product, and (4) spray cooling is incorporated in the exit containment apparatus for secondary cooling of cast product.

Dykes, Charles D. (303 Shore Rd., Milton, VT); Daniel, Sabah S. (303 Shore Rd., Pittsburgh, PA); Wood, J. F. Barry (303 Shore Rd., Burlington, VT 05401)

1990-02-20T23:59:59.000Z

150

ON A POSSIBLE SIZE/COLOR RELATIONSHIP IN THE KUIPER BELT  

SciTech Connect

Color measurements and albedo distributions introduce non-intuitive observational biases in size-color relationships among Kuiper Belt Objects (KBOs) that cannot be disentangled without a well characterized sample population with systematic photometry. Peixinho et al. report that the form of the KBO color distribution varies with absolute magnitude, H. However, Tegler et al. find that KBO color distributions are a property of object classification. We construct synthetic models of observed KBO colors based on two B-R color distribution scenarios: color distribution dependent on H magnitude (H-Model) and color distribution based on object classification (Class-Model). These synthetic B-R color distributions were modified to account for observational flux biases. We compare our synthetic B-R distributions to the observed ''Hot'' and ''Cold'' detected objects from the Canada-France Ecliptic Plane Survey and the Meudon Multicolor Survey. For both surveys, the Hot population color distribution rejects the H-Model, but is well described by the Class-Model. The Cold objects reject the H-Model, but the Class-Model (while not statistically rejected) also does not provide a compelling match for data. Although we formally reject models where the structure of the color distribution is a strong function of H magnitude, we also do not find that a simple dependence of color distribution on orbit classification is sufficient to describe the color distribution of classical KBOs.

Pike, R. E.; Kavelaars, J. J., E-mail: repike@uvic.ca [Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 3P6 (Canada)

2013-10-01T23:59:59.000Z

151

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

E-Print Network (OSTI)

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

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

2007-02-20T23:59:59.000Z

152

The JCMT Legacy Survey of the Gould Belt: a first look at Taurus with HARP  

E-Print Network (OSTI)

As part of a JCMT Legacy Survey of star formation in the Gould Belt, we present early science results for Taurus. CO J=3-2 maps have been secured along the north-west ridge and bowl, collectively known as L 1495, along with deep 13CO and C18O J=3-2 maps in two sub-regions. With these data we search for molecular outflows, and use the distribution of flows, HH objects and shocked H2 line emission features, together with the population of young stars, protostellar cores and starless condensations to map star formation across this extensive region. In total 21 outflows are identified. It is clear that the bowl is more evolved than the ridge, harbouring a greater population of T Tauri stars and a more diffuse, more turbulent ambient medium. By comparison, the ridge contains a much younger, less widely distributed population of protostars which, in turn, is associated with a greater number of molecular outflows. We estimate the ratio of the numbers of prestellar to protostellar cores in L 1495 to be ~ 1.3-2.3, and...

Davis, C J; Hatchell, J; Wouterloot, J G A; Buckle, J V; Nutter, D; Fich, M; Brunt, C; Butner, H; Cavanagh, B; Curtis, E I; Duarte-Cabral, A; Di Francesco, J; Etxaluze, M; Friberg, P; Friesen, R; Fuller, G A; Graves, S; Greaves, J S; Hogerheijde, M R; Johnstone, D; Matthews, B; Matthews, H; Rawlings, J M C; Richer, J S; Roberts, J; Sadavoy, S; Simpson, R J; Tothill, N; Tsamis, Y; Viti, S; Ward-Thompson, D; White, Glenn J; Yates, J

2010-01-01T23:59:59.000Z

153

A BATSE investigation of radiation belt electrons precipitated by VLF waves. Final report  

SciTech Connect

The Compton Observatory commonly encounters fluxes of energetic electrons which have been scattered from the inner radiation belt to the path of the satellite by resonant interactions with VLF waves from powerful man-made transmitters. The present investigation was motivated by the fact that in the Fall of 1993, the Gamma Ray Observatory was boosted from a 650 km altitude circular orbit to a 750 km altitude circular orbit. This was an opportunity, for the first time, to make observations at two different altitudes using the same instrument. The authors have examined DISCLA data from the Burst & Transient Source Experiment (BATSE) experiment from 1 Sep. 1993 to 29 Jan. 1994. During the period of study they identified 48 instances of the satellite encountering a cloud of energetic electrons which had been scattered by VLF transmitters. They find that boosting the altitude of the circular orbit from 650 km to 750 km increased the intensity of cyclotron resonance scattered electrons by a factor of two. To search for long term changes in the cyclotron resonance precipitation, the authors have compared the approx. 750 km altitude data from 106 days at the end of 1993 with data at the same altitudes and time of year in 1991. The cyclotron resonance events in 1991 were three times more frequent and 25% of those cases were more intense than any seen in the 1993 data. They attribute this difference to increased level of geomagnetic activity in 1991 near the Solar Maximum.

Datlowe, D.W.

1995-04-01T23:59:59.000Z

154

Trapping of strangelets in the geomagnetic field  

E-Print Network (OSTI)

Strangelets coming from the interstellar medium (ISM) are an interesting target to experiments searching for evidence of this hypothetic state of hadronic matter. We entertain the possibility of a {\\it trapped} strangelet population, quite analogous to ordinary nuclei and electron belts. For a population of strangelets to be trapped by the geomagnetic field, these incoming particles would have to fulfill certain conditions, namely having magnetic rigidities above the geomagnetic cutoff and below a certain threshold for adiabatic motion to hold. We show in this work that, for fully ionized strangelets, there is a narrow window for stable trapping. An estimate of the stationary population is presented and the dominant loss mechanisms discussed. It is shown that the population would be substantially enhanced with respect to the ISM flux (up to two orders of magnitude) due to quasi-stable trapping.

L. Paulucci; J. E. Horvath; G. A. Medina-Tanco

2007-07-22T23:59:59.000Z

155

Trapping of strangelets in the geomagnetic field  

Science Conference Proceedings (OSTI)

Strangelets arriving from the interstellar medium are an interesting target for experiments searching for evidence of this hypothetical state of hadronic matter. We entertain the possibility of a trapped strangelet population, quite analogous to ordinary nuclei and electron belts. For a population of strangelets to be trapped by the geomagnetic field, these incoming particles would have to fulfill certain conditions, namely, having magnetic rigidities above the geomagnetic cutoff and below a certain threshold for adiabatic motion to hold. We show in this work that, for fully ionized strangelets, there is a narrow window for stable trapping. An estimate of the stationary population is presented and the dominant loss mechanisms discussed. It is shown that the population would be substantially enhanced with respect to the interstellar medium flux (up to 2 orders of magnitude) due to quasistable trapping.

Paulucci, L.; Horvath, J. E.; Medina-Tanco, G. A. [Instituto de Fisica-Universidade de Sao Paulo, Rua do Matao, Travessa R, 187, 05508-090, Cidade Universitaria, Sao Paulo SP (Brazil); Instituto de Astronomia, Geofisica e Ciencias Atmosfericas-Universidade de Sao Paulo, Rua do Matao, 1226, 05508-900, Cidade Universitaria, Sao Paulo SP (Brazil); Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico A.P. 70-543, C.U. Mexico D.F. (Mexico)

2008-02-15T23:59:59.000Z

156

Trapping of strangelets in the geomagnetic field  

E-Print Network (OSTI)

Strangelets coming from the interstellar medium (ISM) are an interesting target to experiments searching for evidence of this hypothetic state of hadronic matter. We entertain the possibility of a {\\it trapped} strangelet population, quite analogous to ordinary nuclei and electron belts. For a population of strangelets to be trapped by the geomagnetic field, these incoming particles would have to fulfill certain conditions, namely having magnetic rigidities above the geomagnetic cutoff and below a certain threshold for adiabatic motion to hold. We show in this work that, for fully ionized strangelets, there is a narrow window for stable trapping. An estimate of the stationary population is presented and the dominant loss mechanisms discussed. It is shown that the population would be substantially enhanced with respect to the ISM flux (up to two orders of magnitude) due to quasi-stable trapping.

Paulucci, L; Medina-Tanco, G A

2007-01-01T23:59:59.000Z

157

Predicting methane accumulations generated from humic Carboniferous coals in the Donbas fold belt (Ukraine)  

Science Conference Proceedings (OSTI)

The numerical modeling of the Ukrainian part of the Donbas fold belt indicates that the coalification pattern was controlled mainly by the maximum burial depth of coal seams and the heat flow (HF) (40-75 mW/m{sup 2}) during the Permian. The coalification pattern was overprinted by magmatic events during the Late Permian in the south syncline (150 mW/m{sup 2}) and during the Permian-Triassic in the north of the Krasnoarmeisk region (120 mW/m{sup 2}). The coalification pattern shows a strong increase in vitrinite reflectance values toward the east and southeastern parts of the study area likely caused by (1) an eastward increase in burial depth, (2) a probable eastward increase in HF, and, (3) probable magmatic activity. An increase in total erosion toward the eastern and southeastern parts was also observed with a maximum erosional amount of approximately 8 km (5 mi) in the southeastern part of the study area. The basin modeling of this area predicts that the main phase of hydrocarbon generation occurred during the Carboniferous-Early Permian subsidence. The magmatic events that occurred during the Permian-Triassic caused renewed pulses of hydrocarbon generation. A large amount of the generated hydrocarbons was lost to the surface because of a lack of seals. However, the numerical simulation predicts accumulations of about 2 tcf (57 billion m{sup 3}) of methane generated from Carboniferous coals in the south and main synclines, where Lower Permian seal rocks are preserved. Finally, this study provides data on methane resources along the northern flank

Alsaab, D.; Elie, M.; Izart, A.; Sachsenhofer, R.F.; Privalov, V.A. [Paradigm Co., Nancy (France)

2008-08-15T23:59:59.000Z

158

Yankee Mine oil seep: New research yields additional evidence of thrusting; original oil volume in the seep was possibly two orders of magnitude greater than previously calculated  

SciTech Connect

Mesomic thrusting combined with subsequent Eocene hydrothermal activity have created a regime favorable to major accumulation of both oil and gold in the Long Valley - Buck Mountain - Maverick Springs Range area of northeastern Nevada. Discoveries from ongoing exploration include: Numerous economic accumulations of hydrocarbon associated gold; various thrust relationships from surface geologic mapping and drill holes identifying Devonian rocks faulted onto Permian, Pennsylvanian (?) and Mississippian age rocks; numerous small scale compressional folds and faults indicative of both cast vergent (expected) and west vergent (unexpected) structural elements. Seismic data indicates that oil source rocks, primarily Chainman Shale and Pilot Shale formations, are present to the west in a downdip, subthrust position where hydrocarbon generation and migration would provide large oil volumes to migrate easterly (updip) prior to the formation of the Basin and Range. The Eocene age hydothermal cell which emplaced gold and oil bearing fluids into the Yankee and associated gold mines probably initiated directly below or east of the Yankee area, but certainly not west of it since no hydrothermal mineralization is present in the Yankee Mine 27-23X Well drilled by Pioneer Oil and Gas west of the mines.

Pinnell, M.L. [Pioneer Oil and Gas, Midvale, UT (United States); Anderson, D.W. [Anderson Geological Corp., Westminster, CO (United States)

1995-06-01T23:59:59.000Z

159

Greece licensing round to focus on western sedimentary basins  

SciTech Connect

New opportunities for international oil companies to explore for hydrocarbons in Greece will emerge shortly. Parliament ratified a new petroleum law in January 1995, and DEP-EKY SA will undertake an international licensing round for offshore-onshore areas mainly in western Greece during second half 1995. The paper describes the fold and thrust belt of western Greece; the Katakolon oil field; the tertiary basins of eastern Greece; the Prinos and Prinos North oil fields; and the Epanomi gas field.

Roussos, N.; Marnelis, F. (Public Petroleum Corp. of Greece, Athens (Greece))

1995-03-06T23:59:59.000Z

160

Possible Magmatic Input to the Dixie Valley Geothermal Field, and  

Open Energy Info (EERE)

Possible Magmatic Input to the Dixie Valley Geothermal Field, and Possible Magmatic Input to the Dixie Valley Geothermal Field, and Implications for District-Scale Resource Exploration, Inferred from Magnetotelluric (MT) Resistivity Surveying Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Possible Magmatic Input to the Dixie Valley Geothermal Field, and Implications for District-Scale Resource Exploration, Inferred from Magnetotelluric (MT) Resistivity Surveying Abstract Magnetotelluric (MT) profiling in northwestern Nevadais used to test hypotheses on the main sources of heat andhydrothermal fluid for the Dixie Valley-Central NevadaSeismic Belt area. The transect reveals families of resistivitystructures commonly dominated by steeply-dipping features,some of which may be of key geothermal significance. Mostnotably, 2-D inversion

Note: This page contains sample records for the topic "thrust belt fields" 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
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161

Electron loss rates from the outer radiation belt caused by the filling of the outer plasmasphere: the calm before the storm  

Science Conference Proceedings (OSTI)

Measurements from 7 spacecraft in geosynchronous orbit are analyzed to determine the decay rate of the number density of the outer electron radiation belt prior to the onset of high-speed-stream-driven geomagnetic storms. Superposed-data analysis is used wan(?) a collection of 124 storms. When there is a calm before the storm, the electron number density decays exponentially before the storm with a 3.4-day e-folding time: beginning about 4 days before storm onset, the density decreases from {approx}4x10{sup -4} cm{sup -3} to {approx}1X 10{sup -4} cm{sup -3}. When there is not a calm before the storm, the number-density decay is very smalL The decay in the number density of radiation-belt electrons is believed to be caused by pitch-angle scattering of electrons into the atmospheric loss cone as the outer plasmasphere fills during the calms. While the radiation-belt electron density decreases, the temperature of the electron radiation belt holds approximately constant, indicating that the electron precipitation occurs equally at all energies. Along with the number density decay, the pressure of the outer electron radiation belt decays and the specific entropy increases. From the measured decay rates, the electron flux to the atmosphere is calculated and that flux is 3 orders of magnitude less than thermal fluxes in the magnetosphere, indicating that the radiation-belt pitch-angle scattering is 3 orders weaker than strong diffusion. Energy fluxes into the atmosphere are calculated and found to be insufficient to produce visible airglow.

Borovsky, Joseph E [Los Alamos National Laboratory; Denton, Michael H [LANCASTER UNIV

2009-01-01T23:59:59.000Z

162

Agile machining and inspection thrust area team-on-machine probing / compatibility assessment of Parametric Technology Corporation (PTC) pro/CMM DMIS with Zeiss DMISEngine.  

SciTech Connect

The charter goal of the Agile Machining and Inspection Thrust Area Team is to identify technical requirements, within the nuclear weapons complex (NWC), for Agile Machining and Inspection capabilities. During FY 2008, the team identified Parametric Technology Corporation (PTC) Pro/CMM as a software tool for use in off-line programming of probing routines--used for measurement--for machining and turning centers. The probing routine would be used for in-process verification of part geometry. The same Pro/CMM program used on the machine tool could also be employed for program validation / part verification using a coordinate measuring machine (CMM). Funding was provided to determine the compatibility of the Pro/CMM probing program with CMM software (Zeiss DMISEngine).

Wade, James Rokwel; Tomlinson, Kurt; Bryce, Edwin Anthony

2008-09-01T23:59:59.000Z

163

Reproducing MEES Is Strictly Prohibited MEES 47:11 15 March 2004 The Value Of Extra-Heavy Crude Oil From The Orinoco Belt  

E-Print Network (OSTI)

be recoverable. (This figure, to give us an idea of its magnitude, is equal to the proven crude oil reserves, with the exception of a few deposits in the Machete area, the type of crude found in the Orinoco Oil Belt is mobile essentially contains extra-heavy crude: crude oil of less than 10Âş API (in other words crude that is heavier

O'Donnell, Tom

164

Evaluation of a Process-Based Agro-Ecosystem Model (Agro-IBIS) across the U.S. Corn Belt: Simulations of the Interannual Variability in Maize Yield  

Science Conference Proceedings (OSTI)

A process-based terrestrial ecosystem model, Agro-IBIS, was used to simulate maize yield in a 13-state region of the U.S. Corn Belt from 1958 to 1994 across a 0.5° terrestrial grid. For validation, county-level census [U.S. Department of ...

Christopher J. Kucharik

2003-12-01T23:59:59.000Z

165

A Survey Of Seismic Activity Near Wairakei Geothermal Field, New Zealand |  

Open Energy Info (EERE)

Of Seismic Activity Near Wairakei Geothermal Field, New Zealand Of Seismic Activity Near Wairakei Geothermal Field, New Zealand Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Survey Of Seismic Activity Near Wairakei Geothermal Field, New Zealand Details Activities (0) Areas (0) Regions (0) Abstract: A five-week survey showed that seismic activity within 20 km of Wairakei Geothermal Field took place mainly at shallow depths (< 2 km), in or close to the Taupo Fault Belt, and occurred in swarms. Twenty-eight earthquakes, with magnitudes (M) between -1.3 and +2.8, were located; 43 other earthquakes, with M < 0.2, were recorded but could not be located. The distribution of located earthquakes did not correlate with known areas of surface geothermal activity. No located earthquake occurred beneath the

166

THE TAOS PROJECT: UPPER BOUNDS ON THE POPULATION OF SMALL KUIPER BELT OBJECTS AND TESTS OF MODELS OF FORMATION AND EVOLUTION OF THE OUTER SOLAR SYSTEM  

Science Conference Proceedings (OSTI)

We have analyzed the first 3.75 years of data from the Taiwanese American Occultation Survey (TAOS). TAOS monitors bright stars to search for occultations by Kuiper Belt objects (KBOs). This data set comprises 5 x 10{sup 5} star hours of multi-telescope photometric data taken at 4 or 5 Hz. No events consistent with KBO occultations were found in this data set. We compute the number of events expected for the Kuiper Belt formation and evolution models of Pan and Sari, Kenyon and Bromley, Benavidez and Campo Bagatin, and Fraser. A comparison with the upper limits we derive from our data constrains the parameter space of these models. This is the first detailed comparison of models of the KBO size distribution with data from an occultation survey. Our results suggest that the KBO population is composed of objects with low internal strength and that planetary migration played a role in the shaping of the size distribution.

Bianco, F. B. [Department of Physics, University of California Santa Barbara, Mail Code 9530, Santa Barbara, CA 93106-9530 (United States); Zhang, Z.-W.; King, S.-K.; Wang, J.-H.; Lee, T.; Lin, H.-C. [Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 10617, Taiwan (China); Lehner, M. J. [Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States); Mondal, S. [Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 129 (India); Giammarco, J. [Department of Astronomy and Physics, Eastern University, 1300 Eagle Road, Saint Davids, PA 19087 (United States); Holman, M. J.; Alcock, C. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Coehlo, N. K. [Department of Statistics, University of California-Berkeley, 367 Evans Hall, Berkeley, CA 94720 (United States); Axelrod, T. [Steward Observatory, 933 North Cherry Avenue, Room N204, Tucson, AZ 85721 (United States); Byun, Y.-I.; Kim, D.-W. [Department of Astronomy, Yonsei University, 134 Shinchon, Seoul 120-749 (Korea, Republic of); Chen, W. P. [Institute of Astronomy, National Central University, 300 Jhongda Road, Jhongli 32054, Taiwan (China); Cook, K. H. [Institute for Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States); Dave, R. [Initiative in Innovative Computing at Harvard, 60 Oxford Street, Cambridge, MA 02138 (United States); De Pater, I. [Department of Astronomy, University of California-Berkeley, 601 Campbell Hall, Berkeley, CA 94720 (United States); Lissauer, J. J. [Space Science and Astrobiology Division 245-3, NASA Ames Research Center, Moffett Field, CA 94035 (United States)], E-mail: fbianco@lcogt.net (and others)

2010-04-15T23:59:59.000Z

167

A Search for Occultations of Bright Stars by Small Kuiper Belt Objects using Megacam on the MMT  

E-Print Network (OSTI)

We conducted a search for occultations of bright stars by Kuiper Belt Objects (KBOs) to estimate the density of sub-km KBOs in the sky. We report here the first results of this occultation survey of the outer solar system conducted in June 2007 and June/July 2008 at the MMT Observatory using Megacam, the large MMT optical imager. We used Megacam in a novel shutterless continuous--readout mode to achieve high precision photometry at 200 Hz. We present an analysis of 220 star hours at signal-to-noise ratio of 25 or greater. The survey efficiency is greater than 10% for occultations by KBOs of diameter d>=0.7 km, and we report no detections in our dataset. We set a new 95% confidence level upper limit for the surface density \\Sigma_N(d) of KBOs larger than 1 km: \\Sigma_N(d>=1 km) = 0.7 km) <= 4.8e8 deg^-2.

Bianco, Federica B; McLeod, Brian A; Alcock, Charles R; Holman, Matthew J; Lehner, Matthew J

2009-01-01T23:59:59.000Z

168

A BATSE investigation of radiation belt electrons precipitated by VLF waves. Final report, 2 May 1994-24 April 1995  

SciTech Connect

The Compton Observatory commonly encounters fluxes of energetic electrons which have been scattered from the inner radiation belt to the path of the satellite by resonant interactions with VLF waves from powerful man-made transmitters. The present investigation was motivated by the fact that in the Fall of 1993, the Gamma Ray Observatory was boosted from a 650 km altitude circular orbit to a 750 km altitude circular orbit. This was an opportunity, for the first time, to make observations at two different altitudes using the same instrument. The authors have examined DISCLA data from the Burst & Transient Source Experiment (BATSE) experiment from 1 Sep. 1993 to 29 Jan. 1994. During the period of study they identified 48 instances of the satellite encountering a cloud of energetic electrons which had been scattered by VLF transmitters. They find that boosting the altitude of the circular orbit from 650 km to 750 km increased the intensity of cyclotron resonance scattered electrons by a factor of two. To search for long term changes in the cyclotron resonance precipitation, the authors have compared the approx. 750 km altitude data from 106 days at the end of 1993 with data at the same altitudes and time of year in 1991. The cyclotron resonance events in 1991 were three times more frequent and 25% of those cases were more intense than any seen in the 1993 data. The authors attribute this difference to increased level of geomagnetic activity in 1991 near the Solar Maximum.

Datlowe, D.W.

1995-05-01T23:59:59.000Z

169

A Summary of Coupled, Uncoupled, and Hybrid Tectonic Models for the Yakima Fold Belt--Topical Report  

SciTech Connect

This document is one in a series of topical reports compiled by the Pacific Northwest National Laboratory to summarize technical information on selected topics important to the performance of a probabilistic seismic hazard analysis of the Hanford Site. The purpose of this report is to summarize the range of opinions and supporting information expressed by the expert community regarding whether a coupled or uncoupled model, or a combination of both, best represents structures in the Yakima Fold Belt. This issue was assessed to have a high level of contention with up to moderate potential for impact on the hazard estimate. This report defines the alternative conceptual models relevant to this technical issue and the arguments and data that support those models. It provides a brief description of the technical issue and principal uncertainties; a general overview on the nature of the technical issue, along with alternative conceptual models, supporting arguments and information, and uncertainties; and finally, suggests some possible approaches for reducing uncertainties regarding this issue.

Chamness, Michele A.; Winsor, Kelsey; Unwin, Stephen D.

2012-08-01T23:59:59.000Z

170

A Summary of Information on the Behavior of the Yakima Fold Belt as a Structural Entity -- Topical Report  

SciTech Connect

This document is one in a series of topical reports compiled by the Pacific Northwest National Laboratory to summarize technical information on selected topics important to the performance of a probabilistic seismic hazard analysis (PSHA) of the Hanford Site. The purpose of this report is to summarize available data and analyses relevant to the Yakima Fold Belt (YFB) that may bear on the question of whether or not the YFB behaves as a single seismotectonic province in which activity along one fold structure is representative of behavior along all other fold structures. This topic has met with a fairly high level of contention in the expert community and has the potential to result in significant impacts on an evaluation of seismic hazard at the Hanford Site. This report defines the relevant alternative conceptual models relevant to this technical issue and the arguments and data that support those models. It provides a brief description of the technical issue and principal uncertainties; a general overview on the nature of the technical issue, along with alternative conceptual models, supporting arguments and information, and uncertainties; and finally, it suggests some possible approaches for reducing uncertainties regarding this issue.

Last, George V.; Winsor, Kelsey; Unwin, Stephen D.

2012-08-01T23:59:59.000Z

171

Suppressant: Electric Fields  

Science Conference Proceedings (OSTI)

*. Bookmark and Share. Suppressant:Electric Fields. Fire Extinguishment of Pool Flames by Means of a DC electric Field.. ...

2011-11-04T23:59:59.000Z

172

Field Mapping At Nw Basin & Range Region (Shevenell, Et Al., 2008) | Open  

Open Energy Info (EERE)

Field Mapping At Nw Basin & Range Region (Shevenell, Field Mapping At Nw Basin & Range Region (Shevenell, Et Al., 2008) Exploration Activity Details Location Northwest Basin and Range Geothermal Region Exploration Technique Field Mapping Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes On a more local scale, Faulds et al. (2003, 2005a, 2005b, 2006) have conducted structural analysis and detailed geologic mapping at a number of sites throughout Nevada and have found that productive geothermal systems typically occur in one of several structural settings, including step-overs in normal fault zones, near the ends of major normal faults where the faults break into multiple splays, in belts of overlapping faults, at fault intersections, and in small pull aparts along strike-slip faults.

173

Internal split field generator  

DOE Patents (OSTI)

A generator includes a coil of conductive material. A stationary magnetic field source applies a stationary magnetic field to the coil. An internal magnetic field source is disposed within a cavity of the coil to apply a moving magnetic field to the coil. The stationary magnetic field interacts with the moving magnetic field to generate an electrical energy in the coil.

Thundat; ,Thomas George (Knoxville, TN); Van Neste, Charles W. (Kingston, TN); Vass, Arpad Alexander (Oak Ridge, TN)

2012-01-03T23:59:59.000Z

174

ENTO 489 Field Entomology Field Project Plan  

E-Print Network (OSTI)

ENTO 489 ­ Field Entomology Field Project Plan GENERAL Title: A Taxonomic Survey of Late Summer will be using aerial sweep nets as our only technique to collect the butterflies because this is the best way: · Materials needed to implement the project in the field include: o 2 aerial sweep nets o 2-4 killing jars set

Behmer, Spencer T.

175

Hydrocarbons in New Guinea, controlled by basement fabric, Mesozoic extension and Tertiary convergent margin tectonics  

Science Conference Proceedings (OSTI)

Most models for the tectonic evolution of New Guinea involve Early and Late Miocene arc-continent collisions, creating an orogenic belt. Structural trends and prospectivity are then analyzed in terms of belts across the country; the Fold Belt (with the discovered oil and gas fields), the Mobile Belt and the accreted arcs. This model inhibits realistic assessment of prospectivity. It now appears the Mobile Belt formed by Oligocene compression then by Early Miocene extension, related to slab-rollback, that unroofed metamorphic core complexes adjacent to starved half-grabens. The grabens filled in the Middle Miocene and were largely transported intact during the Pliocene arc-collision. Early Miocene reefs and hypothesized starved basin source rocks create a viable play throughout northern New Guinea as in the Salawati Basin. The Pliocene clastic section is locally prospective due to overthrusting and deep burial. Within the Fold Belt, the site and types of oil and gas fields are largely controlled by the basement architecture. This controlled the transfer zones and depocentres during Mesozoic extension and the location of major basement uplifts during compression. In PNG, the Bosavi lineament separates an oil province from a gas province. In Irian Jaya the transition from a relatively competent sequence to a rifted sequence west of [approx]139[degrees]E may also be a gas-oil province boundary. Understanding, in detail, the compartmentalization of inverted blocks and areas of thin-skinned thrusting, controlled by the basement architecture, will help constrain hydrocarbon prospectivity.

Hill, K.C.; Kendrick, R.D.; Crowhurst, P.V. (VIEPS, Melbourne (Australia) SAEFUDIN Ijep, GRDC (India))

1996-01-01T23:59:59.000Z

176

External split field generator  

DOE Patents (OSTI)

A generator includes a coil disposed about a core. A first stationary magnetic field source may be disposed on a first end portion of the core and a second stationary magnetic field source may be disposed on a second end portion of core. The first and second stationary magnetic field sources apply a stationary magnetic field to the coil. An external magnetic field source may be disposed outside the coil to apply a moving magnetic field to the coil. Electrical energy is generated in response to an interaction between the coil, the moving magnetic field, and the stationary magnetic field.

Thundat, Thomas George (Knoxville, TN); Van Neste, Charles W. (Kingston, TN); Vass, Arpad Alexander (Oak Ridge, TN)

2012-02-21T23:59:59.000Z

177

Field Mapping At Central Nevada Seismic Zone Region (Shevenell, Et Al.,  

Open Energy Info (EERE)

Shevenell, Et Al., Shevenell, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At Central Nevada Seismic Zone Region (Shevenell, Et Al., 2008) Exploration Activity Details Location Central Nevada Seismic Zone Geothermal Region Exploration Technique Field Mapping Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes On a more local scale, Faulds et al. (2003, 2005a, 2005b, 2006) have conducted structural analysis and detailed geologic mapping at a number of sites throughout Nevada and have found that productive geothermal systems typically occur in one of several structural settings, including step-overs in normal fault zones, near the ends of major normal faults where the faults break into multiple splays, in belts of overlapping faults, at fault

178

Engineering the Zero-Point Field and Polarizable Vacuum For Interstellar Flight  

E-Print Network (OSTI)

A theme that has come to the fore in advanced planning for long-range space exploration is the concept of "propellantless propulsion" or "field propulsion." One version of this concept involves the projected possibility that empty space itself (the quantum vacuum, or space-time metric) might be manipulated so as to provide energy/thrust for future space vehicles. Although such a proposal has a certain science-fiction quality about it, modern theory describes the vacuum as a polarizable medium that sustains energetic quantum fluctuations. Thus the possibility that matter/vacuum interactions might be engineered for space-flight applications is not a priori ruled out, although certain constraints need to be acknowledged. The structure and implications of such a far-reaching hypothesis are considered herein.

H. E. Puthoff; S. R. Little

2010-12-23T23:59:59.000Z

179

BUFFERED WELL FIELD OUTLINES  

U.S. Energy Information Administration (EIA) Indexed Site

OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS The VBA Code below builds oil & gas field boundary outlines (polygons) from buffered wells (points). Input well points layer must be a...

180

1 String field theory  

E-Print Network (OSTI)

This elementary introduction to string field theory highlights the features and the limitations of this approach to quantum gravity as it is currently understood. String field theory is a formulation of string theory as a field theory in space-time with an infinite number of massive fields. Although existing constructions of string field theory require expanding around a fixed choice of space-time background, the theory is in principle background-independent, in the sense that different backgrounds can be realized as different field configurations in the theory. String field theory is the only string formalism developed so far which, in principle, has the potential to systematically address questions involving multiple asymptotically distinct string backgrounds. Thus, although it is not yet well defined as a quantum theory, string field theory may eventually be helpful for understanding questions related to cosmology in string theory. 1.1

W. Taylor

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Eocene tectonic controls on reservoir distribution in VLE 196, Block V, Lamar Field, Maracaibo Basin, Venezuela  

E-Print Network (OSTI)

Integrated interpretation of three-dimensional seismic and well-logging data reveals a prominent �pop-up� structure associated with the VLE 400 fault on the regional unconformity between the Eocene and Miocene in the VLE 196 field, Maracaibo basin, Venezuela. The VLE 400 fault family, an eastern splay of the left-lateral Icotea fault in the basin, played an important role in hydrocarbon migration and accumulation in the field. Hydrocarbons accumulated to the east of the fault but not to the west. The �pop-up� structure on the Eocene unconformity has a four -way dip closure, straddling the fault and extending to the west of the fault. Structures of the Misoa Formation, which is the main reservoir developed below the unconformity in the basin, differ from the structure of the unconformity. The structure of the Misoa Formation shows a tilted uplift of the eastern block of the fault dipping toward the east caused by thrust tectonic movements. Thrust movement and following strike-slip movements provided additional accommodation space to the west of the fault and generated expanded thickness of Eocene sediments compared to the area east of the fault. The thickness of the Misoa Formation east and west of the fault shows no significant changes. Expanded sediments overlie the Misoa Formation in the western block in lateral contact with Misoa sediments eastern block act as a lateral seal. Ductile movement of the Guasare Formation shale contributed to the lateral sealing of the fault against the reservoir rocks in the eastern block. Mobilization of the Guasare Formation modified the structure of overlying formations including the anticline of the Eocene unconformity. The growth strata provide useful information of reactivation of e xisting faults, especially subtle movements which are not recognized by conventional seismic interpretation. Growth strata isochrons shows subtle reactivation of the VLE 400 fault family during Miocene time.

Choi, Byeonggoo

2005-08-01T23:59:59.000Z

182

Far field acceleration  

SciTech Connect

Far fields are propagating electromagnetic waves far from their source, boundary surfaces, and free charges. The general principles governing the acceleration of charged particles by far fields are reviewed. A survey of proposed field configurations is given. The two most important schemes, Inverse Cerenkov acceleration and Inverse free electron laser acceleration, are discussed in detail.

Fernow, R.C.

1995-07-01T23:59:59.000Z

183

Holocene surface faulting along the west flank of the Santa Rosa Range (Nevada-Oregon) and the possible northern extension of the Central Nevada Seismic Belt  

Science Conference Proceedings (OSTI)

The 130 km long Santa Rose Range fault system extends northward from a point about 70 km north of the 1915 Pleasant Valley earthquake fault ruptures to Blue Mountain Pass, Oregon. The authors have examined 1:12,000 low-sun-angle aerial photographs and conducted surveys of scarp morphology to investigate the neotectonic evolution and paleoseismicity of this possible northern extension of the Central Nevada Seismic Belt. Two adjoining segments of the fault zone are separated by a right step in the range-front and apparent absence of Holocene scarps. Each segment records evidence of a Holocene faulting event. The southern 31 km segment between Frey Ranch and the Willow Creek fan shows both small scarps (Valley and larger scarps which oversteepen the base of the adjacent range-front to slopes of 20[degree] to 24[degree]. The northern 42 km segment between Flat Creek and Oregon Canyon Creek shows a recent offset which rejuvenates older (pre-Lahontan) fault scarps and also cuts Holocene terraces along the base of the piedmont pediment. Based on preliminary morphometric data, the maximum vertical displacement (3--4 m) and age of the faulting (early Holocene) are similar in both segments but it is not known whether both segments ruptured contemporaneously. Except for the lack of large historical surface faulting the main neotectonic and geomorphic features of the Santa Rose Range fault zone are similar to that of the Dixie Valley and Pleasant Valley regions of the Central Nevada Seismic Belt. Hence, the occurrence of a large earthquake rupture along this range-front in the near future should not be viewed as a surprise.

Michetti, A.M. (CNR/GNDT, Rome (Italy) Univ. of Nevada, Reno, NV (United States). Center for Neotectonic Studies); Wesnousky, S.G. (Univ. of Nevada, Reno, NV (United States). Center for Neotectonic Studies)

1993-04-01T23:59:59.000Z

184

Magnetic field generator  

DOE Patents (OSTI)

A magnetic field generating device provides a useful magnetic field within a specific retgion, while keeping nearby surrounding regions virtually field free. By placing an appropriate current density along a flux line of the source, the stray field effects of the generator may be contained. One current carrying structure may support a truncated cosine distribution, and it may be surrounded by a current structure which follows a flux line that would occur in a full coaxial double cosine distribution. Strong magnetic fields may be generated and contained using superconducting cables to approximate required current surfaces.

Krienin, Frank (Shoreham, NY)

1990-01-01T23:59:59.000Z

185

BUFFERED WELL FIELD OUTLINES  

U.S. Energy Information Administration (EIA) Indexed Site

OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS The VBA Code below builds oil & gas field boundary outlines (polygons) from buffered wells (points). Input well points layer must be a feature class (FC) with the following attributes: Field_name Buffer distance (can be unique for each well to represent reservoirs with different drainage radii) ...see figure below. Copy the code into a new module. Inputs: In ArcMap, data frame named "Task 1" Well FC as first layer (layer 0). Output: Polygon feature class in same GDB as the well points FC, with one polygon field record (may be multiple polygon rings) per field_name. Overlapping buffers for the same field name are dissolved and unioned (see figure below). Adds an attribute PCTFEDLAND which can be populated using the VBA

186

Propulsion Utilizing Laser-Driven Ponderomotive Fields for Deep-Space Missions  

SciTech Connect

The generation of large amplitude electric fields in plasmas by high-power lasers has been studied for several years in the context of high-energy particle acceleration. Fields on the order of GeV/m are generated in the plasma wake of the laser by non-linear ponderomotive forces. The laser fields generate longitudinal and translational electron plasma waves with phase velocities close to the speed of light. These fields and velocities offer the potential to revolutionize spacecraft propulsion, leading to extended deep space robotic probes. Based on these initial calculations, plasma acceleration by means of laser-induced ponderomotive forces appears to offer significant potential for spacecraft propulsion. Relatively high-efficiencies appear possible with proper beam conditioning, resulting in an order of magnitude more thrust than alternative concepts for high I{sub SP} (>10{sup 5} s) and elimination of the primary life-limiting erosion phenomena associated with conventional electric propulsion systems. Ponderomotive propulsion readily lends itself to beamed power which might overcome some of the constraints of power-limited propulsion concepts. A preliminary assessment of the impact of these propulsion systems for several promising configurations on mission architectures has been conducted. Emphasizing interstellar and interstellar-precursor applications, performance and technical requirements are identified for a number of missions. The use of in-situ plasma and gas for propellant is evaluated as well.

Williams, George J.; Gilland, James H. [Ohio Aerospace Institute, NASA GRCMS 16-1 Cleveland, OH 44135 216-433-9622 (United States)

2009-03-16T23:59:59.000Z

187

Field emission electron source  

DOE Patents (OSTI)

A novel field emitter material, field emission electron source, and commercially feasible fabrication method is described. The inventive field emission electron source produces reliable electron currents of up to 400 mA/cm.sup.2 at 200 volts. The emitter is robust and the current it produces is not sensitive to variability of vacuum or the distance between the emitter tip and the cathode. The novel emitter has a sharp turn-on near 100 volts.

Zettl, Alexander Karlwalter (Kensington, CA); Cohen, Marvin Lou (Berkeley, CA)

2000-01-01T23:59:59.000Z

188

Electromagnetic Lorenz Fields  

E-Print Network (OSTI)

Gauge transformations are potential transformations that leave only specific Maxwell fields invariant. To reveal more, I develop Lorenz field equations with full Maxwell form for nongauge, sans gauge function, transformations yielding mixed, superposed retarded and outgoing, potentials. The form invariant Lorenz condition is then a charge conservation equivalent. This allows me to define three transformation classes that screen for Lorenz relevance. The nongauge Lorentz conditions add polarization fields which support emergent, light-like rays that convey energy on charge conserving phase points. These localized rays escape discovery in modern Maxwell fields where the polarizations are suppressed by gauge transformations.

H. C. Potter

2008-10-07T23:59:59.000Z

189

Abandoned Texas oil fields  

SciTech Connect

Data for Texas abandoned oil fields were primarily derived from two sources: (1) Texas Railroad Commission (TRRC), and (2) Dwight's ENERGYDATA. For purposes of this report, abandoned oil fields are defined as those fields that had no production during 1977. The TRRC OILMASTER computer tapes were used to identify these abandoned oil fields. The tapes also provided data on formation depth, gravity of oil production, location (both district and county), discovery date, and the cumulative production of the field since its discovery. In all, the computer tapes identified 9211 abandoned fields, most of which had less than 250,000 barrel cumulative production. This report focuses on the 676 abandoned onshore Texas oil fields that had cumulative production of over 250,000 barrels. The Dwight's ENERGYDATA computer tapes provided production histories for approximately two-thirds of the larger fields abandoned in 1966 and thereafter. Fields which ceased production prior to 1966 will show no production history nor abandonment date in this report. The Department of Energy hopes the general availability of these data will catalyze the private sector recovery of this unproduced resource.

1980-12-01T23:59:59.000Z

190

Outdoor science field trips.  

E-Print Network (OSTI)

??The purpose of this study was to assess the cognitive and affective values of an outdoor science field trip. Participants were 28 fifth grade students,… (more)

Loyd, Kerrie Anne Therese

2004-01-01T23:59:59.000Z

191

TYPES OF FIELD TESTING  

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

TYPES OF FIELD TESTING Convincing proof of energy savings and performance in a specific building and occupant context If direct proof of savings is desired, the only feasible...

192

Diamond fiber field emitters  

DOE Patents (OSTI)

A field emission electron emitter comprising an electrode formed of at least one diamond, diamond-like carbon or glassy carbon composite fiber, said composite fiber having a non-diamond core and a diamond, diamond-like carbon or glassy carbon coating on said non-diamond core, and electronic devices employing such a field emission electron emitter.

Blanchet-Fincher, Graciela B. (Wilmington, DE); Coates, Don M. (Santa Fe, NM); Devlin, David J. (Los Alamos, NM); Eaton, David F. (Wilmington, DE); Silzars, Aris K. (Landenburg, PA); Valone, Steven M. (Santa Fe, NM)

1996-01-01T23:59:59.000Z

193

Abandoned oil fields in Oklahoma  

SciTech Connect

Data are presented for approximately 165 abandoned oil fields in Oklahoma that have produced 10,000 or more barrels of oil prior to abandonment. The following information is provided for each field: county; DOE field code; field name; AAPG geologic province code; discovery date of field; year of last production, if known; discovery well operator; proven acreage; formation thickness; depth of field; gravity of oil production; calendar year; yearly field oil production; yearly field gas production; cumulative oil production; cumulative gas production; number abandoned fields in county; cumulative production of oil from fields; and cumulative production of gas from fields. (ATT)

Chism, J.

1983-08-01T23:59:59.000Z

194

THE GALACTIC MAGNETIC FIELD  

Science Conference Proceedings (OSTI)

With this Letter, we complete our model of the Galactic magnetic field (GMF), by using the WMAP7 22 GHz total synchrotron intensity map and our earlier results to obtain a 13-parameter model of the Galactic random field, and to determine the strength of the striated random field. In combination with our 22-parameter description of the regular GMF, we obtain a very good fit to more than 40,000 extragalactic Faraday rotation measures and the WMAP7 22 GHz polarized and total intensity synchrotron emission maps. The data call for a striated component to the random field whose orientation is aligned with the regular field, having zero mean and rms strength Almost-Equal-To 20% larger than the regular field. A noteworthy feature of the new model is that the regular field has a significant out-of-plane component, which had not been considered earlier. The new GMF model gives a much better description of the totality of data than previous models in the literature.

Jansson, Ronnie; Farrar, Glennys R. [Center for Cosmology and Particle Physics, Department of Physics, New York University, New York, NY 10003 (United States)

2012-12-10T23:59:59.000Z

195

Remnant field detector  

DOE Patents (OSTI)

An apparatus for qualitatively detecting remnant magnetic fields in matched pairs of magnet cores is described. Equal magnitude and oppositely oriented magnetic flux is induced in the magnet cores by oppositely wound primary windings and current source. Identically wound secondary windings generate output voltages in response to the induced flux. The output voltages generated should be of equal magnitude and opposite polarity if there is no remnant field in the cores. The output voltage will be unequal which is detected if either core has a remnant field. 1 fig.

Visser, A.T.

1986-11-24T23:59:59.000Z

196

Remnant field detector  

DOE Patents (OSTI)

A method apparatus for qualitatively detecting remnant magnetic fields in matched pairs of magnet cores. Equal magnitude and oppositely oriented magnetic flux is induced in the magnet cores by oppositely wound primary windings and current source. Identically wound secondary windings generate output voltages in response to the induced flux. The output voltages generated should be of equal magnitude and opposite polarity if there is no remnant field in the cores. The output voltages will be unequal which is detected if either core has a remnant field.

Visser, Age T. (Geneva, IL)

1988-01-01T23:59:59.000Z

197

Analysis Driven Field Testing  

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

ANALYSIS DRIVEN FIELD TESTING ANALYSIS DRIVEN FIELD TESTING Greg Barker, MEP Paul Norton, NERD C.E. Hancock, MEP Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 MODELING DRIVEN FIELD TESTING Greg Barker, MEP Paul Norton, NERD C.E. Hancock, MEP Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 MODELING DRIVEN MEASUREMENTS Greg Barker, MEP Paul Norton, NERD C.E. Hancock, MEP Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 "Modeling without measuring lacks credibility. Measuring without modeling lacks generality." Ed Hancock

198

Field Operations Program  

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

SUMMARY This report summarizes the Accelerated Reliability testing of five lead-acid battery- equipped Chevrolet S-10 electric vehicles by the U.S. Department of Energy's Field...

199

Fields in Circle  

Science Conference Proceedings (OSTI)

... Field circled in red shown to the right. ... roughly to the blue circle in the tool on the left. ... Spreadsheet Tool, open a spreadsheet as a tab-delimited text ...

200

Dangerous electromagnetic fields?  

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

Dangerous electromagnetic fields? Dangerous electromagnetic fields? Name: Tommy T Joseph Location: N/A Country: N/A Date: N/A Question: Why are electromagnetic fields supposedly dangerous? Replies: I assume you are asking about power line frequency (60 Hz) fields, since they have been in the news lately. No one knows for sure that they are dangerous. There have been a few studies which seem to show an association between how close homes are to power lines, and the incidence of childhood cancer (mostly leukemia) in children living (or who have lived) in those homes. Other similar studies have not found such an association. In all the studies which have found an association, none has actually measured the fields. Studies which actually have measured the fields find no association. There is no known mechanism for 60 Hz fields to cause cancer. Furthermore, the classic "dose-response relationship," that is, the greater the dose, the greater the response, does not seem to work here. Many laboratory studies have found that 60 Hz fields have an effect on organisms under certain conditions, but none of the observed effects can be convincingly related to a hazard. The bottom line is, no one knows for sure. It is important to realize that it is impossible to prove that anything is completely safe. My personal opinion is that, if there is a risk, it must be very small, or it wouldn't be so hard to prove. I can supply some good unbiased references if you are interested.

Note: This page contains sample records for the topic "thrust belt fields" from the National Library of EnergyBeta (NLEBeta).
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201

Radiation Field Control Manual  

Science Conference Proceedings (OSTI)

The EPRI Radiation Management Program is dedicated to reducing nuclear power plant worker personnel exposure by developing practices and technologies to increase the radiation protection of the worker, and to implement methods to reduce radiation fields. The nuclear power industry has recently implemented the RP2020 Initiative to promote positive radiation protection trends. Control of radiation fields is crucial to one of the initiative goals of reducing exposure. This manual provides the current state ...

2004-12-16T23:59:59.000Z

202

Field Research Challenge Site  

DOE Green Energy (OSTI)

Previous experiments at the Rifle, Colorado Integrated Field Research Challenge (IFRC) site demonstrated that field-scale addition of acetate to groundwater reduced the ambient soluble uranium concentration. In this report, sediment samples collected before and after acetate field addition were used to assess the active microbes via {sup 13}C acetate stable isotope probing on 3 phases [coarse sand, fines (8-approximately 150 {micro}m), groundwater (0.2-8 {micro}m)] over a 24-day time frame. TRFLP results generally indicated a stronger signal in {sup 13}C-DNA in the 'fines' fraction compared to the sand and groundwater. Before the field-scale acetate addition, a Geobacter-like group primarily synthesized {sup 13}C-DNA in the groundwater phase, an alpha Proteobacterium primarily grew on the fines/sands, and an Acinetobacter sp. and Decholoromonas-like OTU utilized much of the {sup 13}C acetate in both groundwater and particle-associated phases. At the termination of the field-scale acetate addition, the Geobacter-like species was active on the solid phases rather than the groundwater, while the other bacterial groups had very reduced newly synthesized DNA signal. These findings will help to delineate the acetate utilization patterns of bacteria in the field and can lead to improved methods for stimulating distinct microbial populations in situ.

Kerkhof, L.; Williams, K.H.; Long, P.E.; McGuinness, L.

2011-02-21T23:59:59.000Z

203

Field reversed ion rings  

DOE Green Energy (OSTI)

In typical field-reversed ion ring experiments, an intense annular ion beam is injected across a plasma-filled magnetic cusp region into a neutral gas immersed in a ramped solenoidal magnetic field. Assuming the characteristic ionization time is much shorter than the long ({ital t}{approx_gt}2{pi}/{Omega}{sub {ital i}}) beam evolution time scale, we investigate the formation of an ion ring in the background plasma followed by field reversal, using a 21/2-D hybrid, PIC code FIRE, in which the beam and background ions are treated as particles and the electrons as a massless fluid. We show that beam bunching and trapping occurs downstream in a ramped magnetic field for an appropriate set of experimental parameters. We find that a compact ion ring is formed and a large field reversal {zeta}={delta}{ital B}/{ital B}{approx_gt}1 on axis develops. We also observe significant deceleration of the ring on reflection due to the transfer of its axial momentum to the background ions, which creates favorable trapping conditions. {copyright} {ital 1995 American Institute of Physics.}

Sudan, R.N.; Omelchenko, Y.A. [Laboratory of Plasma Studies, Cornell University, Ithaca, New York 14853 (United States)

1995-09-01T23:59:59.000Z

204

Major Oil Plays In Utah And Vicinity  

SciTech Connect

Utah oil fields have produced over 1.33 billion barrels (211 million m{sup 3}) of oil and hold 256 million barrels (40.7 million m{sup 3}) of proved reserves. The 13.7 million barrels (2.2 million m3) of production in 2002 was the lowest level in over 40 years and continued the steady decline that began in the mid-1980s. However, in late 2005 oil production increased, due, in part, to the discovery of Covenant field in the central Utah Navajo Sandstone thrust belt ('Hingeline') play, and to increased development drilling in the central Uinta Basin, reversing the decline that began in the mid-1980s. The Utah Geological Survey believes providing play portfolios for the major oil-producing provinces (Paradox Basin, Uinta Basin, and thrust belt) in Utah and adjacent areas in Colorado and Wyoming can continue this new upward production trend. Oil plays are geographic areas with petroleum potential caused by favorable combinations of source rock, migration paths, reservoir rock characteristics, and other factors. The play portfolios include descriptions and maps of the major oil plays by reservoir; production and reservoir data; case-study field evaluations; locations of major oil pipelines; identification and discussion of land-use constraints; descriptions of reservoir outcrop analogs; and summaries of the state-of-the-art drilling, completion, and secondary/tertiary recovery techniques for each play. The most prolific oil reservoir in the Utah/Wyoming thrust belt province is the eolian, Jurassic Nugget Sandstone, having produced over 288 million barrels (46 million m{sup 3}) of oil and 5.1 trillion cubic feet (145 billion m{sup 3}) of gas. Traps form on discrete subsidiary closures along major ramp anticlines where the depositionally heterogeneous Nugget is also extensively fractured. Hydrocarbons in Nugget reservoirs were generated from subthrust Cretaceous source rocks. The seals for the producing horizons are overlying argillaceous and gypsiferous beds in the Jurassic Twin Creek Limestone, or a low-permeability zone at the top of the Nugget. The Nugget Sandstone thrust belt play is divided into three subplays: (1) Absaroka thrust - Mesozoic-cored shallow structures, (2) Absaroka thrust - Mesozoic-cored deep structures, and (3) Absaroka thrust - Paleozoic-cored shallow structures. Both of the Mesozoic-cored structures subplays represent a linear, hanging wall, ramp anticline parallel to the leading edge of the Absaroka thrust. Fields in the shallow Mesozoic subplay produce crude oil and associated gas; fields in the deep subplay produce retrograde condensate. The Paleozoic-cored structures subplay is located immediately west of the Mesozoic-cored structures subplays. It represents a very continuous and linear, hanging wall, ramp anticline where the Nugget is truncated against a thrust splay. Fields in this subplay produce nonassociated gas and condensate. Traps in these subplays consist of long, narrow, doubly plunging anticlines. Prospective drilling targets are delineated using high-quality, two-dimensional and three-dimensional seismic data, forward modeling/visualization tools, and other state-of-the-art techniques. Future Nugget Sandstone exploration could focus on more structurally complex and subtle, thrust-related traps. Nugget structures may be present beneath the leading edge of the Hogsback thrust and North Flank fault of the Uinta uplift. The Jurassic Twin Creek Limestone play in the Utah/Wyoming thrust belt province has produced over 15 million barrels (2.4 million m{sup 3}) of oil and 93 billion cubic feet (2.6 billion m{sup 3}) of gas. Traps form on discrete subsidiary closures along major ramp anticlines where the low-porosity Twin Creek is extensively fractured. Hydrocarbons in Twin Creek reservoirs were generated from subthrust Cretaceous source rocks. The seals for the producing horizons are overlying argillaceous and clastic beds, and non-fractured units within the Twin Creek. The Twin Creek Limestone thrust belt play is divided into two subplays: (1) Absaroka thrust-Mesozoic-cored structures and (2) A

Thomas Chidsey

2007-12-31T23:59:59.000Z

205

Field Operations Program  

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

688 688 May 1999 Field Operations Program Activities Status Report Fiscal Years 1997 through mid-1999 J. E. Francfort D. V. O'Hara L. A. Slezak DOE/ID-10688 Field Operations Program Activities Status Report Fiscal Years 1997 through mid-1999 J. E. Francfort 1 D. V. O'Hara 2 L. A. Slezak 2 Published May 1999 Idaho National Engineering and Environmental Laboratory Automotive Systems and Technology Department Lockheed Martin Idaho Technologies Company Idaho Falls, Idaho 83415 Prepared for the U.S. Department of Energy Idaho Operations Office 1 INEEL/Lockheed Martin Idaho Technologies Co. 2 U.S. Department of Energy iii EXECUTIVE SUMMARY The Field Operations Program is an electric vehicle testing and evaluation program sponsored by U.S. Department of Energy and managed by the Idaho National Engineering and Environmental

206

Pulsed hybrid field emitter  

DOE Patents (OSTI)

A hybrid emitter exploits the electric field created by a rapidly depoled ferroelectric material. Combining the emission properties of a planar thin film diamond emitter with a ferroelectric alleviates the present technological problems associated with both types of emitters and provides a robust, extremely long life, high current density cathode of the type required by emerging microwave power generation, accelerator technology and display applications. This new hybrid emitter is easy to fabricate and not susceptible to the same failures which plague microstructure field emitter technology. Local electrode geometries and electric field are determined independently from those for optimum transport and brightness preservation. Due to the large amount of surface charge created on the ferroelectric, the emitted electrons have significant energy, thus eliminating the requirement for specialized phosphors in emissive flat-panel displays. 11 figs.

Sampayan, S.E.

1998-03-03T23:59:59.000Z

207

Pulsed hybrid field emitter  

SciTech Connect

A hybrid emitter exploits the electric field created by a rapidly depoled ferroelectric material. Combining the emission properties of a planar thin film diamond emitter with a ferroelectric alleviates the present technological problems associated with both types of emitters and provides a robust, extremely long life, high current density cathode of the type required by emerging microwave power generation, accelerator technology and display applications. This new hybrid emitter is easy to fabricate and not susceptible to the same failures which plague microstructure field emitter technology. Local electrode geometries and electric field are determined independently from those for optimum transport and brightness preservation. Due to the large amount of surface charge created on the ferroelectric, the emitted electrons have significant energy, thus eliminating the requirement for specialized phosphors in emissive flat-panel displays.

Sampayan, Stephen E. (Manteca, CA)

1998-01-01T23:59:59.000Z

208

Microbial field pilot study  

SciTech Connect

A multi-well microbially enhanced oil recovery field pilot has been performed in the Southeast Vassar Vertz Sand Unit in Payne County, Oklahoma. The primary emphasis of the experiment was preferential plugging of high permeability zones for the purpose of improving waterflood sweep efficiency. Studies were performed to determine reservoir chemistry, ecology, and indigenous bacteria populations. Growth experiments were used to select a nutrient system compatible with the reservoir that encouraged growth of a group of indigenous nitrate-using bacteria and inhibit growth of sulfate-reducing bacteria. A specific field pilot area behind an active line drive waterflood was selected. Surface facilities were designed and installed. Injection protocols of bulk nutrient materials were prepared to facilitate uniform distribution of nutrients within the pilot area. By the end of December, 1991, 82.5 tons (75.0 tonnes) of nutrients had been injected in the field. A tracer test identified significant heterogeneity in the SEVVSU and made it necessary to monitor additional production wells in the field. The tracer tests and changes in production behavior indicate the additional production wells monitored during the field trial were also affected. Eighty two and one half barrels (13.1 m[sup 3]) of tertiary oil have been recovered. Microbial activity has increased CO[sub 2] content as indicated by increased alkalinity. A temporary rise in sulfide concentration was experienced. These indicate an active microbial community was generated in the field by the nutrient injection. Pilot area interwell pressure interference test results showed that significant permeability reduction occurred. The interwell permeabilities in the pilot area between the injector and the three pilot production wells were made more uniform which indicates a successful preferential plugging enhanced oil recovery project.

Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Coates, J.D.; Chisholm, J.L.

1993-05-01T23:59:59.000Z

209

The solar magnetic field  

E-Print Network (OSTI)

The magnetic field of the Sun is the underlying cause of the many diverse phenomena combined under the heading of solar activity. Here we describe the magnetic field as it threads its way from the bottom of the convection zone, where it is built up by the solar dynamo, to the solar surface, where it manifests itself in the form of sunspots and faculae, and beyond into the outer solar atmosphere and, finally, into the heliosphere. On the way it, transports energy from the surface and the subsurface layers into the solar corona, where it heats the gas and accelerates the solar wind.

Solanki, Sami K; Schüssler, Manfred; 10.1088/0034-4885/69/3/R02

2010-01-01T23:59:59.000Z

210

Field Mapping At Dixie Valley Geothermal Field Area (Wesnousky...  

Open Energy Info (EERE)

search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At Dixie Valley Geothermal Field Area (Wesnousky, Et Al., 2003) Exploration Activity Details...

211

ELECTRON IRRADIATION OF KUIPER BELT SURFACE ICES: TERNARY N{sub 2}-CH{sub 4}-CO MIXTURES AS A CASE STUDY  

Science Conference Proceedings (OSTI)

The space weathering of icy Kuiper Belt Objects was investigated in this case study by exposing methane (CH{sub 4}) and carbon monoxide (CO) doped nitrogen (N{sub 2}) ices at 10 K to ionizing radiation in the form of energetic electrons. Online and in situ Fourier transform infrared spectroscopy was utilized to monitor the radiation-induced chemical processing of these ices. Along with isocyanic acid (HNCO), the products could be mainly derived from those formed in irradiated binary ices of the N{sub 2}-CH{sub 4} and CO-CH{sub 4} systems: nitrogen-bearing products were found in the form of hydrogen cyanide (HCN), hydrogen isocyanide (HNC), diazomethane (CH{sub 2}N{sub 2}), and its radical fragment (HCN{sub 2}); oxygen-bearing products were of acetaldehyde (CH{sub 3}CHO), formyl radical (HCO), and formaldehyde (H{sub 2}CO). As in the pure ices, the methyl radical (CH{sub 3}) and ethane (C{sub 2}H{sub 6}) were also detected, as were carbon dioxide (CO{sub 2}) and the azide radical (N{sub 3}). Based on the temporal evolution of the newly formed products, kinetic reaction schemes were then developed to fit the temporal profiles of the newly formed species, resulting in numerical sets of rate constants. The current study highlights important constraints on the preferential formation of isocyanic acid (HNCO) over hydrogen cyanide (HCN) and hydrogen isocyanide (HNC), thus guiding the astrobiological and chemical evolution of those distant bodies.

Kim, Y. S.; Kaiser, R. I., E-mail: ralfk@hawaii.edu [Department of Chemistry, University of Hawaii at Manoa, Honolulu, HI 96822 (United States)

2012-10-10T23:59:59.000Z

212

Corn Fields Shutting Down  

E-Print Network (OSTI)

Fields of corn around Indiana, especially early-planted ones, are in the process of shutting down for the season. While only 3 % of the state’s crop was estimated to be mature (i.e., kernel black layer) as of the week ending 31 Aug, 41 % of the crop was estimated to be at dent stage or beyond (Indiana Ag Stats Service, 2 Sep 2003). The onset of maturity is naturally accompanied by an eventual senescence of the entire solar harvesting “machinery”, but some fields appear to be shutting down prematurely and deserve to be monitored for potential stalk health issues prior to harvest (Nielsen, 2003). The short-term forecast for cool evening temperatures in the mid-50’s or lower throughout much of the state the remainder of this week will further accelerate premature senescence of these stressed fields. Plant stresses contributing to the premature “shutdown ” of some fields include: Root systems compromised by saturated soil conditions caused by early and midseason “monsoon ” events. Drier than normal conditions throughout much of August, accompanied by stressful low to mid-90 F temperatures in the latter part of the month.

R. L. (bob Nielsen

2003-01-01T23:59:59.000Z

213

Light Field Appearance Manifolds  

E-Print Network (OSTI)

Abstract. Statistical shape and texture appearance models are powerful image representations, but previously had been restricted to 2D or 3D shapes with smooth surfaces and lambertian reflectance. In this paper we present a novel 3D appearance model using image-based rendering techniques, which can represent complex lighting conditions, structures, and surfaces. We construct a light field manifold capturing the multi-view appearance of an object class and extend the direct search algorithm of Cootes and Taylor to match new light fields or 2D images of an object to a point on this manifold. When matching to a 2D image the reconstructed light field can be used to render unseen views of the object. Our technique differs from previous view-based active appearance models in that model coefficients between views are explicitly linked, and that we do not model any pose variation within the shape model at a single view. It overcomes the limitations of polygonal based appearance models and uses light fields that are acquired in real-time. 1

Chris Mario Christoudias; Trevor Darrell

2004-01-01T23:59:59.000Z

214

PRELIMINARY RESULTS FROM NEOWISE: AN ENHANCEMENT TO THE WIDE-FIELD INFRARED SURVEY EXPLORER FOR SOLAR SYSTEM SCIENCE  

SciTech Connect

The Wide-field Infrared Survey Explorer (WISE) has surveyed the entire sky at four infrared wavelengths with greatly improved sensitivity and spatial resolution compared to its predecessors, the Infrared Astronomical Satellite and the Cosmic Background Explorer. NASA's Planetary Science Division has funded an enhancement to the WISE data processing system called 'NEOWISE' that allows detection and archiving of moving objects found in the WISE data. NEOWISE has mined the WISE images for a wide array of small bodies in our solar system, including near-Earth objects (NEOs), Main Belt asteroids, comets, Trojans, and Centaurs. By the end of survey operations in 2011 February, NEOWISE identified over 157,000 asteroids, including more than 500 NEOs and {approx}120 comets. The NEOWISE data set will enable a panoply of new scientific investigations.

Mainzer, A.; Bauer, J.; Masiero, J.; Eisenhardt, P. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Grav, T. [Department of Astronomy, Johns Hopkins University, Baltimore, MD (United States); Cutri, R. M.; Dailey, J.; Alles, R.; Beck, R.; Brandenburg, H.; Conrow, T.; Evans, T.; Fowler, J.; Jarrett, T. [Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125 (United States); McMillan, R. S. [Lunar and Planetary Laboratory, University of Arizona, 1629 East University Boulevard, Kuiper Space Science Bldg. 92, Tucson, AZ 85721-0092 (United States); Wright, E. [UCLA Astronomy, P.O. Box 91547, Los Angeles, CA 90095-1547 (United States); Walker, R. [Monterey Institute for Research in Astronomy, Monterey, CA (United States); Jedicke, R.; Tholen, D. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Spahr, T., E-mail: amainzer@jpl.nasa.gov [Minor Planet Center, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2011-04-10T23:59:59.000Z

215

Japanese refrigerators field testing  

SciTech Connect

Residential refrigerators consume the equivalent of 1700 megawatts (MW) of baseload power in the Bonneville Power Administration (BPA) service area. Japanese manufacturers have designed refrigerator units that appear more energy efficient than some currently available American models. This report summarizes preliminary findings from field testing of 12 refrigerators of Japanese manufacture to evaluate annual kilowatt hour (kWh) use during actual operation. The units have also undergone laboratory testing sponsored by BPA at ETL Testing Laboratories, Inc. in Cortland, New York. A final report of the project -- due at the end of 1989 -- will correlate in detail the results of field and laboratory tests in comparison to performance ratings determined by the manufacturer.

Lou, A.T.

1989-03-01T23:59:59.000Z

216

Japanese Refrigerators Field Testing.  

SciTech Connect

Residential refrigerators consume the equivalent of 1700 megawatts (MW) of baseload power in the Bonneville Power Administration (BPA) service area. Japanese manufacturers have designed refrigerator units that appear more energy efficient than some currently available American models. This report summarizes preliminary findings from field testing of 12 refrigerators of Japanese manufacture to evaluate annual kilowatt hour (kWh) use during actual operation. The units have also undergone laboratory testing sponsored by BPA at ETL Testing Laboratories, Inc. in Cortland, New York. A final report of the project -- due at the end of 1989 -- will correlate in detail the results of field and laboratory tests in comparison to performance ratings determined by the manufacturer.

Lou, Albert T.

1989-03-01T23:59:59.000Z

217

Ca rlsbad Field Office  

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

En ergy En ergy Ca rlsbad Field Office P. O . Box 3090 Carlsbad , New Mexico 88221 AUG 2 9 2013 Mr. John E. Kieling , Chief Hazardous Waste Bureau New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Subject: Notification of Class 1 Permit Modification to the Waste Isolation Pilot Plant Hazardous Waste Facility Permit Number: NM4890139088-TSDF

218

Field Force Data Visualization  

Science Conference Proceedings (OSTI)

This report describes the development of a prototype data visualization app for utility workers. By using commercially available tablet technology, open standards, and open source software, utilities may be able to improve data capabilities of deployed field crews with modest investment in technology.BackgroundUtilities have been investing heavily in communications and information technology (IT) infrastructure in the past several years.  While strides are being ...

2012-11-21T23:59:59.000Z

219

Field Guide: Coatings Assessment  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) has numerous products to help plant personnel meet the challenges of working with aging systems, structures, and components, but none that comprehensively address protective coatings and linings. This field guide provides a compilation of protective coating and lining information in a form that allows the user to have a ready reference available during condition assessment of the various protective coatings and linings used in the plant.

2012-05-14T23:59:59.000Z

220

Microbial field pilot study  

Science Conference Proceedings (OSTI)

The objective of this project is to perform a microbial enhanced oil recovery field pilot in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate reducing bacteria will be stimulated to selectively plug flow paths which have been referentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. This report covers progress made during the second year, January 1, 1990 to December 31, 1990, of the Microbial Field Pilot Study project. Information on reservoir ecology, surface facilities design, operation of the unit, core experiments, modeling of microbial processes, and reservoir characterization and simulation are presented in the report. To better understand the ecology of the target reservoir, additional analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. The results of the produced and injected water analysis show increasing sulfide concentrations with respect to time. In March of 1990 Mesa Limited Partnership sold their interest in the SEVVSU to Sullivan and Company. In April, Sullivan and Company assumed operation of the field. The facilities for the field operation of the pilot were refined and implementation was begun. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. The experiments were performed at SEVVSU temperature using fluids and inoculum from the unit. The model described in last year`s report was further validated using results from a core flood experiment. The model was able to simulate the results of one of the core flood experiments with good quality.

Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

1992-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Microbial field pilot study  

Science Conference Proceedings (OSTI)

The objective of this project is to perform a microbial enhanced oil recovery field pilot in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate reducing bacteria will be stimulated to selectively plug flow paths which have been referentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. This report covers progress made during the second year, January 1, 1990 to December 31, 1990, of the Microbial Field Pilot Study project. Information on reservoir ecology, surface facilities design, operation of the unit, core experiments, modeling of microbial processes, and reservoir characterization and simulation are presented in the report. To better understand the ecology of the target reservoir, additional analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. The results of the produced and injected water analysis show increasing sulfide concentrations with respect to time. In March of 1990 Mesa Limited Partnership sold their interest in the SEVVSU to Sullivan and Company. In April, Sullivan and Company assumed operation of the field. The facilities for the field operation of the pilot were refined and implementation was begun. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. The experiments were performed at SEVVSU temperature using fluids and inoculum from the unit. The model described in last year's report was further validated using results from a core flood experiment. The model was able to simulate the results of one of the core flood experiments with good quality.

Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

1992-03-01T23:59:59.000Z

222

Warped Conformal Field Theory  

E-Print Network (OSTI)

We study field theories in two spacetime dimensions invariant under a chiral scaling symmetry that acts only on right-movers. The local symmetries include one copy of the Virasoro algebra and a U(1) current algebra. This differs from the 2d conformal group, but in some respects is equally powerful in constraining the theory. In particular, the symmetries on a torus lead to modular covariance of the partition function, which is used to derive a universal formula for the asymptotic density of states. For an application we turn to the holographic description of black holes in quantum gravity, motivated by the fact that the symmetries in the near horizon geometry of any extremal black hole are identical to those of a 2d field theory with chiral scaling. We consider two examples: black holes in warped AdS_3 in topologically massive gravity, and in string theory. In both cases, the density of states in the 2d field theory reproduces the Bekenstein-Hawking entropy of black holes in the gravity theory.

Detournay, Stephane; Hofman, Diego M

2012-01-01T23:59:59.000Z

223

Warped Conformal Field Theory  

E-Print Network (OSTI)

We study field theories in two spacetime dimensions invariant under a chiral scaling symmetry that acts only on right-movers. The local symmetries include one copy of the Virasoro algebra and a U(1) current algebra. This differs from the 2d conformal group, but in some respects is equally powerful in constraining the theory. In particular, the symmetries on a torus lead to modular covariance of the partition function, which is used to derive a universal formula for the asymptotic density of states. For an application we turn to the holographic description of black holes in quantum gravity, motivated by the fact that the symmetries in the near horizon geometry of any extremal black hole are identical to those of a 2d field theory with chiral scaling. We consider two examples: black holes in warped AdS_3 in topologically massive gravity, and in string theory. In both cases, the density of states in the 2d field theory reproduces the Bekenstein-Hawking entropy of black holes in the gravity theory.

Stephane Detournay; Thomas Hartman; Diego M. Hofman

2012-10-01T23:59:59.000Z

224

Study of applied magnetic field magnetoplasmadynamic thrusters with particle-in-cell and Monte Carlo collision. II. Investigation of acceleration mechanisms  

Science Conference Proceedings (OSTI)

The particle-in-cell method previously described in paper (I) has been applied to the investigation of acceleration mechanisms in applied-field magnetoplasmadynamic thrusters. This new approach is an alternative to magnetohydrodynamics models and allows nonlocal dynamic effects of particles and improved transport properties. It was used to model a 100 kW, steady-state, applied-field, argon magnetoplasmadynamic thruster to study the physical acceleration processes with discharge currents of 1000-1500 A, mass flow rates of 0.025-0.1 g/s and applied magnetic field strengths of 0.034-0.102 T. The total thrust calculations were used to verify the theoretical approach by comparison with experimental data. Investigations of the acceleration model offer an underlying understanding of applied-field magnetoplasmadynamic thrusters, including the following conclusions: (1) swirl acceleration mechanism is the dominant contributor to the plasma acceleration, and self-magnetic, Hall, gas-dynamic, and swirl acceleration mechanisms are in an approximate ratio of 1:10:10:100; (2) the Hall acceleration produced mainly by electron swirl is insensitive to the change of externally applied magnetic field and shows only slight increases when the current is raised; (3) self-magnetic acceleration is normally negligible for all cases, while the gas-dynamic acceleration contribution increases with increasing applied magnetic field strength, discharge current, and mass flow rate.

Tang Haibin; Cheng Jiao; Liu Chang [School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191 (China); York, Thomas M. [Aeronautical and Astronautical Engineering Department, Ohio State University, Columbus, Ohio 43235 (United States)

2012-07-15T23:59:59.000Z

225

Study of applied magnetic field magnetoplasmadynamic thrusters with particle-in-cell code with Monte Carlo collision. I. Computation methods and physical processes  

Science Conference Proceedings (OSTI)

A two-dimensional axisymmetric electromagnetic particle-in-cell code with Monte Carlo collision conditions has been developed for an applied-field magnetoplasmadynamic thruster simulation. This theoretical approach establishes a particle acceleration model to investigate the microscopic and macroscopic characteristics of particles. This new simulation code was used to study the physical processes associated with applied magnetic fields. In this paper (I), detail of the computation procedure and results of predictions of local plasma and field properties are presented. The numerical model was applied to the configuration of a NASA Lewis Research Center 100-kW magnetoplasmadynamic thruster which has well documented experimental results. The applied magnetic field strength was varied from 0 to 0.12 T, and the effects on thrust were calculated as a basis for verification of the theoretical approach. With this confirmation, the changes in the distributions of ion density, velocity, and temperature throughout the acceleration region related to the applied magnetic fields were investigated. Using these results, the effects of applied field on physical processes in the thruster discharge region could be represented in detail, and those results are reported.

Tang Haibin; Cheng Jiao; Liu Chang [School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191 (China); York, Thomas M. [Ohio State University, Columbus, Ohio 43235 (United States)

2012-07-15T23:59:59.000Z

226

Golden Field Office  

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

Department of Energy Department of Energy Golden Field Office 1617 Cole Boulevard Golden, Colorado 80401-3393 FINDING OF NO SIGNIFICANT IMPACT UNIVERSITY OF MAINE'S DEEPWATER OFFSHORE FLOATING WIND TURBINE TESTING AND DEMONSTRATION PROJECT - CASTINE DOE/EA-1792-S1 AGENCY: U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy ACTION: Finding of No Significant Impact (FONSI) SUMMARY: The U.S. Department of Energy (DOE) has completed a Supplemental Environmental Assessment (Supplemental EA) DOE/EA-1792-S1 for the University of Maine's (UMaine) Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project - Castine. DOE prepared the Supplemental EA to evaluate the potential environmental impacts of

227

Quasi light fields: Extending the light field to coherent radiation  

E-Print Network (OSTI)

Imaging technologies such as dynamic viewpoint generation are engineered for incoherent radiation using the traditional light field, and for coherent radiation using electromagnetic field theory. We present a model of ...

Accardi, Anthony J.

228

Efficient thermal field computation in phase-field models  

Science Conference Proceedings (OSTI)

We solve the phase-field equations in two dimensions to simulate crystal growth in the low undercooling regime. The novelty is the use of a fast solver for the free space heat equation to compute the thermal field. This solver is based on the efficient ... Keywords: Crystal growth, Dendritic solidification, Diffusion equation, Fast solvers, Integral representation, Phase-field, Unbounded domain

Jing-Rebecca Li; Donna Calhoun; Lucien Brush

2009-12-01T23:59:59.000Z

229

Electric Field Reversal in Sprite Electric Field Signature  

Science Conference Proceedings (OSTI)

In measurements of the electric field associated with the current of a sprite 450 km from ground-based field sensors, it was observed that the sign of the electric field was positive when positive charge was lowered from the ionosphere. A recent ...

Richard G. Sonnenfeld; William W. Hager

2013-05-01T23:59:59.000Z

230

FE Magnetic Field Analysis Simulation Models based Design, Development, Control and Testing of An Axial Flux Permanent Magnet Linear Oscillating Motor  

E-Print Network (OSTI)

Abstract- Development, finite element(FE) analysis of magnetic field distribution, performance, control and testing of a new axial flux permanent magnet linear oscillating motor (PMLOM) along with a suitable speed and thrust control technique is described in this paper. The PMLOM can perform precision oscillation task without exceeding the given limit on allowable average power dissipation. The use of new powerful permanent magnet materials such as Neodymium-Iron-Boron alloys can greatly improve the performance of electrical machines. Also its performance parameters, such as the force, current etc. are experimentally assessed. The objective of this paper is to determine the forces for aluminium mover embedded with rare earth permanent magnet experimentally and analytically through FEMM software and develop a microcontroller based IGBT Inverter for its control. Index Terms- Axial flux machine, finite element analysis, microcontroller based IGBT inverter, permanent magnet linear oscillating motor, rare earth permanent magnet. I.

Govindaraj T; Prof Dr; Ashoke K. Ganguli

2009-01-01T23:59:59.000Z

231

Golden Field Office  

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

1617 Cole Boulevard Golden , Colorado 80401-3393 DOE/EA-1791 FINDING OF NO SIGNIFICANT IMPACT UNIVERSITY OF MINNESOTA WIND ENERGY RESEARCH CONSORTIllM PROJECT AGENCY: U.S. Department of Energy, Golden Field Office ACTION : Finding of No Significant Impact (FONSI) SUMMARY: The U. S. Department of Energy (DOE) is proposing to authorize the expenditure of Federal funding by the University of Minnesota to design, permit, and construct a wind turbine research facility I. This funding has been appropriated under the American Recovery and Reinvestment Act of2009. The University would use the funding to install a wind turbine research facility at its University of Minnesota Outreach Research and Education (UMore) Park in Rosemount, Minnesota. The proposed research facility would consist of a 2.5-megawatt-

232

Golden Field Office  

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

FINDING OF NO SIGNIFICANT IMPACT FINDING OF NO SIGNIFICANT IMPACT MONARCH WARREN COUNTY WIND TURBINE PROJECT LENOX TOWNSIDP, WARREN COUNTY, IL AGENCY: U.S. Department of Energy (DOE), Golden Field Office ACTION: Finding orNo Significant Impact (FONS!) DOEIEA-JSOO SUMMARY: The U.S. Department of Energy (DOE) provided Federal funding appropriated under the American Reinvestment and Recovery Act 0(2009 to the Illinois Department ofComrnerce and Econom ic Opportunity (DeEO) under the State Energy Program (SEP). DeEO proposes to provide approximately $5 million of its SEP funds to Monarch Wind Power (MWP) for the Monarch Warren County Wind Turbine Project (MWTP). DOE's Proposed Action is to authorize the expenditure of Federal funding under State Energy Program to design, permit, and construct

233

ARM - Field Campaigns  

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

alpacas clouds-anvil german-scene instrumentfield pye-night racoro-inst rhubc-layout snowy-site twpice-ship walter-annemarie alpacas clouds-anvil german-scene instrumentfield pye-night racoro-inst rhubc-layout snowy-site twpice-ship walter-annemarie How Do I Propose a Campaign? First, review the guidelines for submitting proposals. Next, submit a preproposal; a short summary of the proposed campaign. Wait for a response from the Infrastructure Management Board (IMB) and/or ARM Science Board. A full proposal or science plan, may be requested. Decision is made-now what is expected? ARM Climate Research Facility users regularly conduct field campaigns to augment routine data acquisitions and to test and validate new instruments. Announcements 13 Dec 2013 Now accepting proposals for use of an AMF, AAF, or augment observations at one of our fixed sites. Smaller campaigns in FY2014 and FY2015 can also be

234

Golden Field Office  

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

80401 -3393 DOEIEA-1818 80401 -3393 DOEIEA-1818 FINDING OF NO SIGNIFICANT IMPACT PETTISVILLE WIND ENERGY PROJECT AGENCY: U.S . Department of Energy, Golden Field Office ACTION: Finding of No Significant Impact (FONSI) SUMMARY: The U.S. Department of Energy (DOE) provided Federal funding to the Ohio Department of Development (0000) under the State Energy Program (SEP). 0000 proposes to provide $1 ,225 ,000 of its SEP funds to the Pettisvil Ie Local Schools (Pettisville) for the Pettisville Local Schools Wind Energy Project (Wind Energy Project). DOE' s Proposed Action is to authorize the expenditure of Federal funding under State Energy Program to design, permit, and construct the Pettisville Wind Energy Project, a 750-kilowatt wind turbine at the Pettisville Pre-Kindergarten through Twelfth Grade School located at

235

Electric Fields in a Tokamak  

E-Print Network (OSTI)

A self-consistent analysis of the electric fields in a tokamak yields the result that the poloidal and radial electrostatic fields must vanish for a toroidally symmetric equilibrium.

Johnson, Robert W

2008-01-01T23:59:59.000Z

236

Wavelets and Field Forecast Verification  

Science Conference Proceedings (OSTI)

Current field forecast verification measures are inadequate, primarily because they compress the comparison between two complex spatial field processes into one number. Discrete wavelet transforms (DWTs) applied to analysis and contemporaneous ...

William M. Briggs; Richard A. Levine

1997-06-01T23:59:59.000Z

237

Diamond-graphite field emitters  

DOE Patents (OSTI)

A field emission electron emitter comprising an electrode of diamond and a conductive carbon, e.g., graphite, is provided.

Valone, Steven M. (Santa Fe, NM)

1997-01-01T23:59:59.000Z

238

Revitalizing an old oil field  

Science Conference Proceedings (OSTI)

Redevelopment of the Olney oil field in Illinois is described. First discovered in 1936, production peaked in 1941 when over 30,000 bopd were produced. In 1970, 600 wells in the Olney field pumped only 4000 bpd. Since the decontrol of crude oil prices, a redevelopment project has begun in the field. The project includes well stimulation techniques plus newly drilled or deepened wells. Present production in the Olney field has reached 5000 bopd.

Ortiz, S.

1981-12-01T23:59:59.000Z

239

Direct drive field actuator motors  

DOE Patents (OSTI)

A positive-drive field actuator motor is described which includes a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately. 62 figs.

Grahn, A.R.

1998-03-10T23:59:59.000Z

240

Magnetic-field-dosimetry system  

DOE Patents (OSTI)

A device is provided for measuring the magnetic field dose and peak field exposure. The device includes three Hall-effect sensors all perpendicular to each other, sensing the three dimensional magnetic field and associated electronics for data storage, calculating, retrieving and display.

Lemon, D.K.; Skorpik, J.R.; Eick, J.L.

1981-01-21T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Low field magnetic resonance imaging  

DOE Patents (OSTI)

A method and system of magnetic resonance imaging does not need a large homogenous field to truncate a gradient field. Spatial information is encoded into the spin magnetization by allowing the magnetization to evolve in a non-truncated gradient field and inducing a set of 180 degree rotations prior to signal acquisition.

Pines, Alexander (Berkeley, CA); Sakellariou, Dimitrios (Billancourt, FR); Meriles, Carlos A. (Fort Lee, NJ); Trabesinger, Andreas H. (London, GB)

2010-07-13T23:59:59.000Z

242

Residential Transient Magnetic Field Research  

Science Conference Proceedings (OSTI)

Residential populations are exposed, in some measure, to transient magnetic fields. Such fields result from virtually all electric and electronic switching operations that may occur within the residence or external to the residence. This report presents the first phase of a study to better characterize these fields and, ultimately, describe their relationship to utility wiring configurations.

1994-03-01T23:59:59.000Z

243

Field practice internship final report  

SciTech Connect

This field practice internship final report gives an overview of the field practice, which was completed at the Oak Ridge Y-12 Plant, Martin Marietta Energy Systems, Inc., Environmental Management Department, Oak Ridge, Tennessee. The field practice focused on the completion of the Superfund Amendments and Reauthorization Act (SARA) Title III, Emergency Planning and Community Right-to-Know Act Section 312, Tier II Report. The field practice internship was conducted on a full-time basis between December 13, 1993 through February 18, 1994. Sheila Poligone, Emergency Planning and Community Right-to-Know Act (EPCRA) Coordinator served as the field practice preceptor.

Foster, T.

1994-05-01T23:59:59.000Z

244

MOA: Magnetic Field Oscillating Amplified Thruster and its Application for Nuclear Electric and Thermal Propulsion  

Science Conference Proceedings (OSTI)

More than 60 years after the later Nobel laureate Hannes Alfven had published a letter stating that oscillating magnetic fields can accelerate ionised matter via magneto-hydrodynamic interactions in a wave like fashion, the technical implementation of Alfven waves for propulsive purposes has been proposed, patented and examined for the first time by a group of inventors. The name of the concept, utilising Alfven waves to accelerate ionised matter for propulsive purposes, is MOA - Magnetic field Oscillating Amplified thruster. Alfven waves are generated by making use of two coils, one being permanently powered and serving also as magnetic nozzle, the other one being switched on and off in a cyclic way, deforming the field lines of the overall system. It is this deformation that generates Alfven waves, which are in the next step used to transport and compress the propulsive medium, in theory leading to a propulsion system with a much higher performance than any other electric propulsion system. Based on computer simulations, which were conducted to get a first estimate on the performance of the system, MOA is a highly flexible propulsion system, whose performance parameters might easily be adapted, by changing the mass flow and/or the power level. As such the system is capable to deliver a maximum specific impulse of 13116 s (12.87 mN) at a power level of 11.16 kW, using Xe as propellant, but can also be attuned to provide a thrust of 236.5 mN (2411 s) at 6.15 kW of power. While space propulsion is expected to be the prime application for MOA and is supported by numerous applications such as Solar and/or Nuclear Electric Propulsion or even as an 'afterburner system' for Nuclear Thermal Propulsion, other terrestrial applications can be thought of as well, making the system highly suited for a common space-terrestrial application research and utilisation strategy. (authors)

Frischauf, Norbert [QASAR Technologie(s) GmbH, Johann Gottekgasse 39, A-1230, Vienna (Austria); Hettmer, Manfred; Grassauer, Andreas; Bartusch, Tobias [QASAR Technologie(s) GmbH, Johann Gottekgasse 39, A-1230, Vienna (Austria); Koudelka, Otto [Institute of Communication Networks and Satellite Communication, Graz University of Technology, Inffeldgasse 12/I, A-8010 Graz (Austria)

2006-07-01T23:59:59.000Z

245

Field Evaluation of Windows  

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

Evaluation of Windows Evaluation of Windows Last Updated: 10/20/2009 Various tools can be used to evaluate windows in the field. Unless a new window still has the NFRC label attached to it, it is nearly impossible to determine by sight what the thermal and optical performance of a window is. These tools can provide information, such as low-e coating, gap width and gas fill, that can be used to approximate the performance of a window. Solar gain and Low-e detector This device can be used to determine if a low-e coating is present in the window, what type of coating it is, and where it is located. The type of low-e coating will indicate the amount of solar gain that is admitted through the coating. Readings can be "low", "medium" or "high". The device will also indicate on which glass surface the low-e coating is in relation to the position of the device. Limitations: Only works on glass of 1/8" (3 mm) or thinner. Cost: around $350 from EDTM.com

246

Electronic field permeameter  

DOE Patents (OSTI)

For making rapid, non-destructive permeability measurements in the field, a portable minipermeameter of the kind having a manually-operated gas injection tip is provided with a microcomputer system which operates a flow controller to precisely regulate gas flow rate to a test sample, and reads a pressure sensor which senses the pressure across the test sample. The microcomputer system automatically turns on the gas supply at the start of each measurement, senses when a steady-state is reached, collects and records pressure and flow rate data, and shuts off the gas supply immediately after the measurement is completed. Preferably temperature is also sensed to correct for changes in gas viscosity. The microcomputer system may also provide automatic zero-point adjustment, sensor calibration, over-range sensing, and may select controllers, sensors, and set-points for obtaining the most precise measurements. Electronic sensors may provide increased accuracy and precision. Preferably one microcomputer is used for sensing instrument control and data collection, and a second microcomputer is used which is dedicated to recording and processing the data, selecting the sensors and set-points for obtaining the most precise measurements, and instructing the user how to set-up and operate the minipermeameter. To provide mass data collection and user-friendly operation, the second microcomputer is preferably a lap-type portable microcomputer having a non-volatile or battery-backed CMOS memory.

Chandler, Mark A. (Madison, WI); Goggin, David J. (Austin, TX); Horne, Patrick J. (Austin, TX); Kocurek, Gary G. (Roundrock, TX); Lake, Larry W. (Austin, TX)

1989-01-01T23:59:59.000Z

247

Wide-fieldInfraredSurvey ExplorerLaunch  

E-Print Network (OSTI)

system's main asteroid belt. By measuring the objects' infrared light, astronomers will get the first solar system· To better understand the evolution of planets, stars and galaxies· why the sun looks red are estimated to reside in our solar system, but most have gone unidenti- fied. WISE will detect hundreds

248

24/11/2010 10:22AGU: Radiation belt electron precipitation due to geomagnetic storms: Significance to middle atmosphere ozone chemistry Page 1 of 2http://europa.agu.org/?view=article&uri=/journals/ja/ja1011/2010JA015599/2010JA015599.xml  

E-Print Network (OSTI)

24/11/2010 10:22AGU: Radiation belt electron precipitation due to geomagnetic storms: Significance precipitation due to geomagnetic storms: Significance to middle atmosphere ozone chemistry Craig J. Rodger Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland Geomagnetic storms triggered

Ulich, Thomas

249

Field Sampling | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Field Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Sampling Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Techniques Information Provided by Technique Lithology: Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Stratigraphic/Structural: Can reveal relatively high permeability zones. Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting.

250

Steam Field | Open Energy Information  

Open Energy Info (EERE)

Field Field Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Steam Field Dictionary.png Steam Field: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Steam field reservoirs are special cases where the fluid is predominantly found in a gas phase between 230°C to 240°C. "This special class of resource needs to be recognized, its uniqueness being the remarkably consistent initial temperature and pressure

251

K Basins Field Verification Program  

SciTech Connect

The Field Verification Program establishes a uniform and systematic process to ensure that technical information depicted on selected engineering drawings accurately reflects the actual existing physical configuration. This document defines the Field Verification Program necessary to perform the field walkdown and inspection process that identifies the physical configuration of the systems required to support the mission objectives of K Basins. This program is intended to provide an accurate accounting of the actual field configuration by documenting the as-found information on a controlled drawing.

Booth, H.W.

1994-12-02T23:59:59.000Z

252

Conservation laws. Generation of physical fields. Principles of field theories  

E-Print Network (OSTI)

In the paper the role of conservation laws in evolutionary processes, which proceed in material systems (in material media) and lead to generation of physical fields, is shown using skew-symmetric differential forms. In present paper the skew-symmetric differential forms on deforming (nondifferentiable) manifolds were used in addition to exterior forms, which have differentiable manifolds as a basis. Such skew-symmetric forms (which were named evolutionary ones since they possess evolutionary properties), as well as the closed exterior forms, describe the conservation laws. But in contrast to exterior forms, which describe conservation laws for physical fields, the evolutionary forms correspond to conservation laws for material systems. The evolutionary forms possess an unique peculiarity, namely, the closed exterior forms are obtained from these forms. It is just this that enables one to describe the process of generation of physical fields, to disclose connection between physical fields and material systems and to resolve many problems of existing field theories.

L. I. Petrova

2007-04-19T23:59:59.000Z

253

Magnetic response to applied electrostatic field in external magnetic field  

E-Print Network (OSTI)

We show, within QED and other possible nonlinear theories, that a static charge localized in a finite domain of space becomes a magnetic dipole, if it is placed in an external (constant and homogeneous) magnetic field in the vacuum. The magnetic moment is quadratic in the charge, depends on its size and is parallel to the external field, provided the charge distribution is at least cylindrically symmetric. This magneto-electric effect is a nonlinear response of the magnetized vacuum to an applied electrostatic field. Referring to a simple example of a spherically-symmetric applied field, the nonlinearly induced current and its magnetic field are found explicitly throughout the space, the pattern of lines of force is depicted, both inside and outside the charge, which resembles that of a standard solenoid of classical magnetostatics.

T. C. Adorno; D. M. Gitman; A. E. Shabad

2013-11-16T23:59:59.000Z

254

Fast superconducting magnetic field switch  

DOE Patents (OSTI)

The superconducting magnetic switch or fast kicker magnet is employed with an electron stream or a bunch of electrons to rapidly change the direction of flow of the electron stream or bunch of electrons. The apparatus employs a beam tube which is coated with a film of superconducting material. The tube is cooled to a temperature below the superconducting transition temperature and is subjected to a constant magnetic field which is produced by an external dc magnet. The magnetic field produced by the dc magnet is less than the critical field for the superconducting material, thus, creating a Meissner Effect condition. A controllable fast electromagnet is used to provide a magnetic field which supplements that of the dc magnet so that when the fast magnet is energized the combined magnetic field is now greater than the critical field and the superconducting material returns to its normal state allowing the magnetic field to penetrate the tube. This produces an internal field which effects the direction of motion and of the electron stream or electron bunch. The switch can also operate as a switching mechanism for charged particles. Magnetic switches and particularly fast kicker magnets are used in the accelerator industry to quickly deflect particle beams into and out of various transport lines, storage rings, dumps, and specifically to differentially route individual bunches of particles from a train of bunches which are injected or ejected from a given ring.

Goren, Y.; Mahale, N.K.

1995-12-31T23:59:59.000Z

255

Fast superconducting magnetic field switch  

DOE Patents (OSTI)

The superconducting magnetic switch or fast kicker magnet is employed with electron stream or a bunch of electrons to rapidly change the direction of flow of the electron stream or bunch of electrons. The apparatus employs a beam tube which is coated with a film of superconducting material. The tube is cooled to a temperature below the superconducting transition temperature and is subjected to a constant magnetic field which is produced by an external dc magnet. The magnetic field produced by the dc magnet is less than the critical field for the superconducting material, thus, creating a Meissner Effect condition. A controllable fast electromagnet is used to provide a magnetic field which supplements that of the dc magnet so that when the fast magnet is energized the combined magnetic field is now greater that the critical field and the superconducting material returns to its normal state allowing the magnetic field to penetrate the tube. This produces an internal field which effects the direction of motion and of the electron stream or electron bunch. The switch can also operate as a switching mechanism for charged particles.

Goren, Yehuda (Mountain View, CA); Mahale, Narayan K. (The Woodlands, TX)

1996-01-01T23:59:59.000Z

256

Field observations and lessons learned  

SciTech Connect

This presentation outlines observations and lessons learned from the Megaports program. It provides: (1) details of field and technical observations collected during LANL field activities at ports around the world and details of observations collected during radiation detections system testing at Los Alamos National Laboratory; (2) provides suggestions for improvement and efficiency; and (3) discusses possible program execution changes for more effective operations.

Nielsen, Joh B [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

257

Field Techniques | Open Energy Information  

Open Energy Info (EERE)

Field Techniques Field Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Map surface geology and hydrothermal alteration. Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Bulk and trace element analysis of rocks, minerals, and sediments. Identify and document surface geology and mineralogy. Rapid and unambiguous identification of unknown minerals.[1] Stratigraphic/Structural: Locates active faults in the area of interest. Map fault and fracture patterns, kinematic information. Can reveal relatively high permeability zones. Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting.

258

PYROTRON WITH TRANSLATIONAL CLOSURE FIELDS  

DOE Patents (OSTI)

Circuit means is described for effecting inward transla- ' tory motion of the intensified terminal reflector field regions of a magnetic mirror plasma containment field with a simultaneous intensification of the over-all field configuration. The circuit includes a segmented magnetic field generating solenoid and sequentially actuated switch means to consecutively short-circuit the solenoid segments and place charged capacitor banks in shunt with the segments in an appropriate correlated sequence such that electrical energy is transferred inwardly between adjacent segments from the opposite ends of the solenoid. The resulting magnetic field is effective in both radially and axially adiabatically compressing a plasma in a reaction chamber disposed concentrically within the solenoid. In addition, one half of the circuit may be employed to unidirectionally accelerate plasma. (AEC)

Hartwig, E.C.; Cummings, D.B.; Post, R.F.

1962-01-01T23:59:59.000Z

259

Low-magnetic-field magnetars  

E-Print Network (OSTI)

It is now widely accepted that soft gamma repeaters and anomalous X-ray pulsars are the observational manifestations of magnetars, i.e. sources powered by their own magnetic energy. This view was supported by the fact that these `magnetar candidates' exhibited, without exception, a surface dipole magnetic field (as inferred from the spin-down rate) in excess of the electron critical field (~4.4E+13 G). The recent discovery of fully-qualified magnetars, SGR 0418+5729 and Swift J1822.3-1606, with dipole magnetic field well in the range of ordinary radio pulsars posed a challenge to the standard picture, showing that a very strong field is not necessary for the onset of magnetar activity (chiefly bursts and outbursts). Here we summarize the observational status of the low-magnetic-field magnetars and discuss their properties in the context of the mainstream magnetar model and its main alternatives.

Turolla, R

2013-01-01T23:59:59.000Z

260

Compact orthogonal NMR field sensor  

DOE Patents (OSTI)

A Compact Orthogonal Field Sensor for emitting two orthogonal electro-magnetic fields in a common space. More particularly, a replacement inductor for existing NMR (Nuclear Magnetic Resonance) sensors to allow for NMR imaging. The Compact Orthogonal Field Sensor has a conductive coil and a central conductor electrically connected in series. The central conductor is at least partially surrounded by the coil. The coil and central conductor are electrically or electro-magnetically connected to a device having a means for producing or inducing a current through the coil and central conductor. The Compact Orthogonal Field Sensor can be used in NMR imaging applications to determine the position and the associated NMR spectrum of a sample within the electro-magnetic field of the central conductor.

Gerald, II, Rex E. (Brookfield, IL); Rathke, Jerome W. (Homer Glen, IL)

2009-02-03T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

MOA - The Magnetic Field Amplified Thruster, a Novel Concept for a Pulsed Plasma Accelerator  

Science Conference Proceedings (OSTI)

More than 60 years after the later Nobel laureate Hannes Alfven had published a letter stating that oscillating magnetic fields can accelerate ionised matter via magneto-hydrodynamic interactions in a wave like fashion, the technical implementation of Alfven waves for propulsive purposes has been proposed, patented and examined for the first time by a group of inventors. The name of the concept is MOA - Magnetic field Oscillating Amplified thruster. Based on computer simulations, MOA is a highly flexible propulsion system, whose performance parameters might easily be adapted, by changing the mass flow and/or the power level. As such the system is capable to deliver a maximum specific impulse of 13116 s (12.87 mN) at a power level of 11.16 kW, using Xe as propellant, but can also be attuned to provide a thrust of 236.5 mN (2411 s) at 6.15 kW of power. While space propulsion is expected to be the prime application for MOA and is supported by numerous applications such as Solar and/or Nuclear Electric Propulsion or even as an 'afterburner system' for Nuclear Thermal Propulsion, other terrestrial applications can be thought of as well, making the system highly suited for a common space-terrestrial application research and utilisation strategy. This paper presents the recent developments of the MOA Thruster R and D activities at QASAR (www.qasar.at), the company in Vienna, which has been set up to further develop and test the Alfven wave technology and its applications.

Frischauf, Norbert; Hettmer, Manfred; Grassauer, Andreas; Bartusch, Tobias [QASAR Technologie(s) GmbH, Richard-Strauss-Strasse 12, A-1230, Vienna (Austria); Koudelka, Otto [Institute of Communication Networks and Satellite Communication, Graz University of Technology, Inffeldgasse 12/I, A-8010 Graz (Austria)

2008-01-21T23:59:59.000Z

262

Abandoned oil fields in Kansas and Nebraska  

SciTech Connect

Data on approximately 400 abandoned oil fields in Kansas and 90 abandoned oil fields in Nebraska are presented. The following information is obtained on each field: county; DOE field code; field name; AAPG geologic province code; discovery date; year of last production; discovery well operator; proven acreage; formation thickness; depth of field; API gravity; calendar year; yearly field oil production; yearly field gas production; cumulative oil production; cumulative gas production; number abandoned fields in county; cumulative production of oil from fields; and cumulative production of gas from fields. (DMC)

Not Available

1982-12-01T23:59:59.000Z

263

ARM - Field Campaign - Precision Gas Sampling (PGS) Validation Field  

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

govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Precision Gas Sampling (PGS) Validation Field Campaign 2003.04.02 - 2003.09.02 Lead Scientist : Marc Fischer For data sets, see below. Description Ecosystem-atmosphere exchange of carbon, water, and energy varies with climate, soil, and land management, in ways 1) that influence the CO2 flux and planetary boundary layer CO2 concentration in ARM CART and 2) that we can model and predict. This activity repeated portable flux system measurements that we performed in spring 2002, by continuing measurements of the spatial heterogeneity of carbon, water, and energy fluxes in fields surrounding the ARM SGP Central Facility (CF).

264

ARM - Field Campaign - Remote Cloud Sensing (RCS) Field Evaluation  

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

love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Remote Cloud Sensing (RCS) Field Evaluation 1994.04.01 - 1994.05.31 Lead Scientist :...

265

ARM - Field Campaign - Remote Cloud Sensing (RCS) Field Evaluation  

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

love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Remote Cloud Sensing (RCS) Field Evaluation 1995.04.01 - 1995.05.31 Lead Scientist :...

266

Measurements of magnetic field alignment  

Science Conference Proceedings (OSTI)

The procedure for installing Superconducting Super Collider (SSC) dipoles in their respective cryostats involves aligning the average direction of their field with the vertical to an accuracy of 0.5 mrad. The equipment developed for carrying on these measurements is described and the measurements performed on the first few prototypes SSC magnets are presented. The field angle as a function of position in these 16.6 m long magnets is a characteristic of the individual magnet with possible feedback information to its manufacturing procedure. A comparison of this vertical alignment characteristic with a magnetic field intensity (by NMR) characteristic for one of the prototypes is also presented. 5 refs., 7 figs.

Kuchnir, M.; Schmidt, E.E.

1987-11-06T23:59:59.000Z

267

Vector-field domain walls  

Science Conference Proceedings (OSTI)

We argue that spontaneous Lorentz violation may generally lead to metastable domain walls related to the simultaneous violation of some accompanying discrete symmetries. Remarkably, such domain-wall solutions exist for spacelike Lorentz violation and do not exist for the timelike violation. Because a preferred space direction is spontaneously induced, these domain walls have no planar symmetry and produce a peculiar static gravitational field at small distances, while their long-distance gravity appears the same as for regular scalar-field walls. Some possible applications of vector-field domain walls are briefly discussed.

Chkareuli, J. L. [E. Andronikashvili Institute of Physics, 0177 Tbilisi, Georgia (United States); I. Chavchavadze State University, 0162 Tbilisi (Georgia); Kobakhidze, Archil [E. Andronikashvili Institute of Physics, 0177 Tbilisi (Georgia); School of Physics, University of Melbourne, Victoria 3010 (Australia); Volkas, Raymond R. [School of Physics, University of Melbourne, Victoria 3010 (Australia)

2009-09-15T23:59:59.000Z

268

Quantum field theory without divergences  

E-Print Network (OSTI)

It is shown that loop divergences emerging in the Green functions in quantum field theory originate from correspondence of the Green functions to {\\em unmeasurable} (and hence unphysical) quantities. This is because no physical quantity can be measured in a point, but in a region, the size of which is constrained by the resolution of measuring equipment. The incorporation of the resolution into the definition of quantum fields $\\phi(x)\\to\\phi^{(A)}(x)$ and appropriate change of Feynman rules results in finite values of the Green functions. The Euclidean $\\phi^4$-field theory is taken as an example.

Altaisky, M V

2010-01-01T23:59:59.000Z

269

Quantum field theory without divergences  

E-Print Network (OSTI)

It is shown that loop divergences emerging in the Green functions in quantum field theory originate from correspondence of the Green functions to {\\em unmeasurable} (and hence unphysical) quantities. This is because no physical quantity can be measured in a point, but in a region, the size of which is constrained by the resolution of measuring equipment. The incorporation of the resolution into the definition of quantum fields $\\phi(x)\\to\\phi^{(A)}(x)$ and appropriate change of Feynman rules results in finite values of the Green functions. The Euclidean $\\phi^4$-field theory is taken as an example.

M. V. Altaisky

2010-02-12T23:59:59.000Z

270

Freedom Field | Open Energy Information  

Open Energy Info (EERE)

Field Field Jump to: navigation, search Logo: Freedom Field Name Freedom Field Address 3333 Kishwaukee Street Place Rockford, Illinois Zip 61109 Year founded 2009 Phone number 815-387-7570 Coordinates 42.2243753°, -89.0869292° 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":42.2243753,"lon":-89.0869292,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

271

Field Mapping | Open Energy Information  

Open Energy Info (EERE)

Field Mapping Field Mapping Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Mapping Details Activities (59) Areas (35) Regions (6) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Data Collection and Mapping Parent Exploration Technique: Data Collection and Mapping Information Provided by Technique Lithology: Map surface geology and hydrothermal alteration. Stratigraphic/Structural: Map fault and fracture patterns, kinematic information. Hydrological: Map surface manifestations of geothermal systems. Thermal: Map surface temperature. Cost Information Low-End Estimate (USD): 400.0040,000 centUSD 0.4 kUSD 4.0e-4 MUSD 4.0e-7 TUSD / hour Median Estimate (USD): 600.0060,000 centUSD

272

Field ionization from carbon nanofibers  

E-Print Network (OSTI)

The Micro Gas Analyzer project aims to develop power-efficient, high resolution, high sensitivity, portable and real-time gas sensors. We developed a field ionizer array based on gated CNTs. Arrays of CNTs are used because ...

Adeoti, Bosun J

2008-01-01T23:59:59.000Z

273

Correlation Models for Temperature Fields  

Science Conference Proceedings (OSTI)

This paper presents derivations of some analytical forms for spatial correlations of evolving random fields governed by a white-noise-driven damped diffusion equation that is the analog of autoregressive order 1 in time and autoregressive order 2 ...

Gerald R. North; Jue Wang; Marc G. Genton

2011-11-01T23:59:59.000Z

274

Carlsbad Field Office - Fact Sheet  

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

the nation's nuclear waste disposal problem Carlsbad Field Office The U.S. Department of Energy (DOE) created the Carlsbad Area Office in late 1993 to lead the nation's transuranic...

275

Quantum fields as gravitational sources  

E-Print Network (OSTI)

The practice of setting quantum fields as sources for classical general relativity is examined. Several conceptual problems are identified which invalidate apparently innocuous equations. Alternative ways to links classical general relativity with quantum theory using Bohm's theory are proposed.

Mark J Hadley

2008-08-13T23:59:59.000Z

276

Radiative processes: Potentials or Fields?  

SciTech Connect

In this work we prove that the transition amplitudes of processes involving the emission of one or more real photons is gauge invariant through terms that are always proportional to the electromagnetic field tensor.

Moreno, Matias [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Mexico, D.F. 04510 (Mexico); Lopez Castro, Gabriel [Departamento de Fisica, Centro de Investigacion y Estudios Avanzados, Mexico, D.F. (Mexico)

2010-07-29T23:59:59.000Z

277

New hypothesis for formation of Lengguru foldbelt, Irian Jaya, Indonesia  

Science Conference Proceedings (OSTI)

The Lengguru foldbelt, an area 300 km (180 mi) long with a maximum width of 100 km (60 mi), is near the western end of the island of New Guinea. Sedimentary rocks of the belt include Mesozoic marine sandstone and shale, Tertiary deep-water limestone, Tertiary shelf limestone, and upper Miocene to Pleistocene detritus. The slab of folded platform sedimentary rocks making up the Lengguru foldbelt was originally at the northern margin of the Australian continent and was thrust southwestward over the undeformed continental crust of the western part of New Guinea. The slab was also rotated clockwise by about 30/sup 0/ about a pivot at its northern end. During rotation, thrusting and decollement within the foldbelt caused a repetition by stacking of the stratigraphic section, and the belt was dragged along transcurrent faults to the south. This foldbelt is of interest for oil exploration because of proximity to the Salawati and Bintuni oil fields on the westernmost tip of the island.

Dow, D.B.; Robinson, G.P.; Ratman, N.

1985-02-01T23:59:59.000Z

278

Evolution of twisted magnetic fields  

SciTech Connect

The magnetic field of the solar corona evolves quasistatically in response to slowly changing photospheric boundary conditions. The magnetic topology is preserved by the low resistivity of the solar atmosphere. We show that a magnetic flux coordinate system simplifies the problem of calculating field evolution with invariant topology. As an example, we calculate the equilibrium of a thin magnetic flux tube with small twist per unit length.

Zweibel, E.G.; Boozer, A.H.

1985-02-01T23:59:59.000Z

279

Field Research in Bacterial Transport  

SciTech Connect

The objective of the final phase of this project is to incorporate new understanding and practical insights derived from interdisciplinary field studies by DOE and other agencies into a broader research framework to address DOE remediation problems. This effort will lend unique strength to Environmental Remediation Sciences Division (ERSD) strategic planning and offer real linkages to remediation problems faced in the field at DOE sites nationwide.

Wildung, Raymond E.

2006-06-01T23:59:59.000Z

280

Invariants from classical field theory  

Science Conference Proceedings (OSTI)

We introduce a method that generates invariant functions from perturbative classical field theories depending on external parameters. By applying our methods to several field theories such as Abelian BF, Chern-Simons, and two-dimensional Yang-Mills theory, we obtain, respectively, the linking number for embedded submanifolds in compact varieties, the Gauss' and the second Milnor's invariant for links in S{sup 3}, and invariants under area-preserving diffeomorphisms for configurations of immersed planar curves.

Diaz, Rafael [Grupo de Fisica-Matematica, Universidad Experimental Politecnica de las Fuerzas Armadas, Caracas 1010 (Venezuela); Leal, Lorenzo [Centro de Fisica Teorica y Computacional, Universidad Central de Venezuela, Caracas 1041-A (Venezuela)

2008-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Preliminary Design of The Wide-Field Infrared Survey Explorer (WISE)  

E-Print Network (OSTI)

The Wide-field Infrared Survey Explorer (WISE), a NASA MIDEX mission, will survey the entire sky in four bands from 3.3 to 23 microns with a sensitivity 1000 times greater than the IRAS survey. The WISE survey will extend the Two Micron All Sky Survey into the thermal infrared and will provide an important catalog for the James Webb Space Telescope. Using 1024x1024 HgCdTe and Si:As arrays at 3.3, 4.7, 12 and 23 microns, WISE will find the most luminous galaxies in the universe, the closest stars to the Sun, and it will detect most of the main belt asteroids larger than 3 km. The single WISE instrument consists of a 40 cm diamond-turned aluminum afocal telescope, a two-stage solid hydrogen cryostat, a scan mirror mechanism, and reimaging optics giving 5" resolution (full-width-half-maximum). The use of dichroics and beamsplitters allows four color images of a 47'x47' field of view to be taken every 8.8 seconds, synchronized with the orbital motion to provide total sky coverage with overlap between revolutions. WISE will be placed into a Sun-synchronous polar orbit on a Delta 7320-10 launch vehicle. The WISE survey approach is simple and efficient. The three-axis-stabilized spacecraft rotates at a constant rate while the scan mirror freezes the telescope line of sight during each exposure. WISE is currently in its Preliminary Design Phase, with the mission Preliminary Design Review scheduled for July, 2005. WISE is scheduled to launch in mid 2009; the project web site can be found at www.wise.ssl.berkeley.edu.

A. K. Mainzer; P. Eisenhardt; E. L. Wright; F. Liu; W. Irace; I. Heinrichsen; R. Cutri; V. Duval

2005-08-10T23:59:59.000Z

282

Towards a quantum field theory of primitive string fields  

Science Conference Proceedings (OSTI)

We denote generating functions of massless even higher-spin fields 'primitive string fields' (PSF's). In an introduction we present the necessary definitions and derive propagators and currents of these PDF's on flat space. Their off-shell cubic interaction can be derived after all off-shell cubic interactions of triplets of higher-spin fields have become known. Then we discuss four-point functions of any quartet of PSF's. In subsequent sections we exploit the fact that higher-spin field theories in AdS{sub d+1} are determined by AdS/CFT correspondence from universality classes of critical systems in d-dimensional flat spaces. The O(N) invariant sectors of the O(N) vector models for 1 {=} 4, they are distinguished by their anomalous dimensions (in CFT{sub 3}) or by theirmass (in AdS{sub 4}). We sum over these multiplets and the spins to obtain 'string type fields', one for each such monomial.

Ruehl, W., E-mail: wue_ruehl@t-online.de [Technical University of Kaiserslautern, Department of Physics (Germany)

2012-10-15T23:59:59.000Z

283

ARM - Field Campaign - Precision Gas Sampling (PGS) Validation Field  

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

govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Precision Gas Sampling (PGS) Validation Field Campaign 2006.01.01 - 2006.12.31 Lead Scientist : Marc Fischer For data sets, see below. Description Accurate prediction of the regional responses of CO2 flux to changing climate, land use, and management requires models that are parameterized and tested against measurements made in multiple land cover types and over seasonal to inter-annual time scales. In an extension of our earlier work on crop systems, we investigated the effects of burning on the cycles of carbon, water, and energy in an example of grazed land of the Southern Great Plains. In collaboration with Dr. Herman Mayeux, of the USDA Grazing

284

ARM - Field Campaign - Precision Gas Sampling (PGS) Validation Field  

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

govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Precision Gas Sampling (PGS) Validation Field Campaign 2004.04.15 - 2004.12.15 Lead Scientist : Marc Fischer For data sets, see below. Description Accurate prediction of the regional responses of CO2 flux to changing climate, land use, and management requires models that are parameterized and tested against measurements made in multiple land cover types and over seasonal to inter-annual time scales. Models predicting fluxes for un-irrigated agriculture were posed with the challenge of characterizing the onset and severity of plant water stress. We conducted a study that quantified the spatial heterogeneity and temporal variations in land

285

Coulomb field effect on plasma focusing and wake field acceleration  

SciTech Connect

It is shown that the fields generated by relativistic electron (positron) bunches moving in overdense cold plasma have two components -- wake and Coulomb. The existence of the Coulomb component is caused by the absence of the Debay screening of the charge moving in plasma with the velocity greater than the thermal velocity of the plasma electrons. It is shown that at some conditions the contribution of the Coulomb component to focusing and self-focusing of the electron (positron) bunches, and wake field generation could be essential. This conclusion is valid for different descriptions of cold plasma-relativistic electron bunch system.

Amatuni, A.Ts.; Elbakian, S.S.; Sekhpossian, E.V. [Yerevan Physics Inst. (Armenia)

1993-11-01T23:59:59.000Z

286

Electromagnetic fields in cased borehole  

DOE Green Energy (OSTI)

Borehole electromagnetic (EM) measurements, using fiberglass-cased boreholes, have proven useful in oil field reservoir characterization and process monitoring (Wilt et al., 1995). It has been presumed that these measurements would be impossible in steel-cased wells due to the very large EM attenuation and phase shifts. Recent laboratory and field studies have indicated that detection of EM signals through steel casing should be possible at low frequencies, and that these data provide a reasonable conductivity image at a useful scale. Thus, we see an increased application of this technique to mature oilfields, and an immediate extension to geothermal industry as well. Along with the field experiments numerical model studies have been carried out for analyzing the effect of steel casing to the EM fields. The model used to be an infinitely long uniform casing embedded in a homogeneous whole space. Nevertheless, the results indicated that the formation signal could be accurately recovered if the casing characteristics were independently known (Becker et al., 1998; Lee el al., 1998). Real steel-cased wells are much more complex than the simple laboratory models used in work to date. The purpose of this study is to develop efficient numerical methods for analyzing EM fields in realistic settings, and to evaluate the potential application of EM technologies to cross-borehole and single-hole environment for reservoir characterization and monitoring.

Lee, Ki Ha; Kim, Hee Joon; Uchida, Toshihiro

2001-07-20T23:59:59.000Z

287

Remote field eddy current inspection  

SciTech Connect

The Remote Field Eddy Current (RFEC) technique uses an internal probe to inspect conducting tubes nondestructively. A coaxial solenoidal exciter, energized with low frequency AC, and detector coils near the inside of the pipe wall are separated by about two pipe diameters to obtain through wall transmission and equal sensitivity to defects on the outside or inside of the pipe wall. Calculation methods are outlined and the voltage plane polar plot signal representation for defect measurement is described. Slit defect interactions in ferromagnetic and non-ferromagnetic tubes are discussed. Defect-induced anomalous fields are interpreted in terms of anomalous source eddy current and missing magnetization defect models. The use of computer animations to represent the time variations of high resolution field measurements and calculations is described.

Atherton, D.L. [Queen`s Univ., Kingston, Ontario (Canada). Dept. of Physics

1995-11-01T23:59:59.000Z

288

Air Showers and Geomagnetic Field  

E-Print Network (OSTI)

The influence of the geomagnetic field on the development of air showers is studied. The well known International Geomagnetic Reference Field was included in the AIRES air shower simulation program as an auxiliary tool to allow calculating very accurate estimations of the geomagnetic field given the geographic coordinates, altitude above sea level and date of a given event. Our simulations indicate that the geomagnetic deflections alter significantly some shower observables like, for example, the lateral distribution of muons in the case of events with large zenith angles (larger than 75 degrees). On the other hand, such alterations seem not to be important for smaller zenith angles. Global observables like total numbers of particles or longitudinal development parameters do not present appreciable dependences on the geomagnetic deflections for all the cases that were studied.

A. Cillis; S. J. Sciutto

1999-07-31T23:59:59.000Z

289

High Field Magnetic Resonance Facility  

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

HFMRF Overview HFMRF Overview Section 2-3-1 High Field Magnetic Resonance Facility The High Field Magnetic Resonance Facility (HFMRF) focuses a significant portion of its research on developing a fundamental, molecular-level understanding of biochemical and biological systems and their response to environmental effects. A secondary focus is materials science, including catalysis and chemical mechanisms and processes. Staff and science consultants within this facility offer expertise in the areas of structural biology, solid-state materials characterization, and magnetic resonance imaging (MRI) techniques. Research activities in the HFMRF include: * structure determination of large molecular assemblies such as protein-DNA (normal and damaged DNA) and protein-RNA complexes

290

Gluon field distribution in baryons  

E-Print Network (OSTI)

Methods for revealing the distribution of gluon fields within the three-quark static-baryon potential are presented. In particular, we outline methods for studying the sensitivity of the source on the emerging vacuum response for the three-quark system. At the same time, we explore the possibility of revealing gluon-field distributions in three-quark systems in QCD without the use of gauge-dependent smoothing techniques. Renderings of flux tubes from a preliminary high-statistics study on a 12^3 X 24 lattice are presented.

F. Bissey; F-G. Cao; A. Kitson; B. G. Lasscock; D. B. Leinweber; A. I. Signal; A. G. Williams; J. M. Zanotti

2005-01-05T23:59:59.000Z

291

String field theory and tachyon condensation  

E-Print Network (OSTI)

In this thesis I discuss various aspects of Witten's cubic string field theory. After a brief review of the basics of string field theory we begin by showing how string field theory can be used to check certain conjectures ...

Ellwood, Ian Thomas, 1977-

2004-01-01T23:59:59.000Z

292

Analytic progress in open string field theory  

E-Print Network (OSTI)

Open string field theory provides an action functional for open string fields, and it is thus a manifestly off-shell formulation of open string theory. The solutions to the equation of motion of open string field theory ...

Kiermaier, Michael Stefan

2009-01-01T23:59:59.000Z

293

High field solenoids for muon cooling  

E-Print Network (OSTI)

on axis between the high field low beta coils and the fluxinverse of the field that produces the low beta pinch point.the high field section that creates the low beta pinch in

Green, M.A.

2011-01-01T23:59:59.000Z

294

The courts and electromagnetic fields  

Science Conference Proceedings (OSTI)

This article examines the recent development in eminent domain cases involving power transmission line rights of way, the issue of fear of the mythical buyer. The author feels that the fear of electrocution or of the possible cancer-inducing effects of electromagnetic fields is greatly influencing court decisions in these cases. The results could be more expensive rights of way acquisition by utilities.

Freeman, M. (Univ. of Pennsylvania, Philadelphia (United States))

1990-07-19T23:59:59.000Z

295

Linear electric field mass spectrometry  

DOE Patents (OSTI)

A mass spectrometer and methods for mass spectrometry are described. The apparatus is compact and of low weight and has a low power requirement, making it suitable for use on a space satellite and as a portable detector for the presence of substances. High mass resolution measurements are made by timing ions moving through a gridless cylindrically symmetric linear electric field. 8 figs.

McComas, D.J.; Nordholt, J.E.

1992-12-01T23:59:59.000Z

296

Linear electric field mass spectrometry  

DOE Patents (OSTI)

A mass spectrometer and methods for mass spectrometry. The apparatus is compact and of low weight and has a low power requirement, making it suitable for use on a space satellite and as a portable detector for the presence of substances. High mass resolution measurements are made by timing ions moving through a gridless cylindrically symmetric linear electric field.

McComas, David J. (Los Alamos, NM); Nordholt, Jane E. (Los Alamos, NM)

1992-01-01T23:59:59.000Z

297

Field Guide: Bearing Damage Mechanisms  

Science Conference Proceedings (OSTI)

Electric Power Research Institute (EPRI) report 1021780, Manual of Bearing Failures and Repair in Power Plant Rotating Equipment, 2011 Update, is a comprehensive document on the subject of fluid film bearing damage modes. This field guide provides a pocket reference based upon the content of that report. ...

2012-11-06T23:59:59.000Z

298

A current concern. [Electromagnetic fields  

SciTech Connect

This article examines the risk to homeowners of exposure to electromagnetic fields (EMF). Studies that link EMF to cancer are described and recommendations are given for prudent avoidance. Appliance manufacturers claim to have found no economically feasible way to shield emissions. Meanwhile the EPA's health effects research in this area has been suspended because of budgetary constraints.

Brinckerhoff, S.

1990-09-01T23:59:59.000Z

299

Linear electric field mass spectrometry  

DOE Patents (OSTI)

A mass spectrometer is described having a low weight and low power requirement, for use in space. It can be used to analyze the ionized particles in the region of the spacecraft on which it is mounted. High mass resolution measurements are made by timing ions moving through a gridless cylindrically sysmetric linear electric field.

McComas, D.J.; Nordholt, J.E.

1991-03-29T23:59:59.000Z

300

Quantum Field Theory Frank Wilczeky  

E-Print Network (OSTI)

Quantum Field Theory Frank Wilczeky Institute for Advanced Study, School of Natural Science, Olden Lane, Princeton, NJ 08540 I discuss the general principles underlying quantum eld theory, and attempt achieved and prospective. Possible limitations of quantum eld theory are viewed in the light of its history

Wilczek, Frank

Note: This page contains sample records for the topic "thrust belt fields" 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

Quantum fields with topological defects  

E-Print Network (OSTI)

Domain walls, strings and monopoles are extended objects, or defects, of quantum origin with topologically non--trivial properties and macroscopic behavior. They are described in Quantum Field Theory in terms of inhomogeneous condensates. We review the related formalism in the framework of the spontaneous breakdown of symmetry.

M. Blasone; P. Jizba; G. Vitiello

2004-02-13T23:59:59.000Z

302

Quantum Field Theory in Graphene  

E-Print Network (OSTI)

This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect, and the Casimir interaction.

Fialkovsky, I V

2011-01-01T23:59:59.000Z

303

Quantum Field Theory in Graphene  

E-Print Network (OSTI)

This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect, and the Casimir interaction.

I. V. Fialkovsky; D. V. Vassilevich

2011-11-13T23:59:59.000Z

304

Field Training in Radar Meteorology  

Science Conference Proceedings (OSTI)

The NSF Division of Mesoscale Meteorology and the University of Nevada—Reno (UNR) provided support for a two-week field course at the CSU—CHILL radar during 12—24 May 1991. Ten atmospheric science graduate students and two faculty from the Desert ...

John Hallett; Melanie Wetzel; Steven Rutledge

1993-01-01T23:59:59.000Z

305

Computers for Lattice Field Theories  

E-Print Network (OSTI)

Parallel computers dedicated to lattice field theories are reviewed with emphasis on the three recent projects, the Teraflops project in the US, the CP-PACS project in Japan and the 0.5-Teraflops project in the US. Some new commercial parallel computers are also discussed. Recent development of semiconductor technologies is briefly surveyed in relation to possible approaches toward Teraflops computers.

Y. Iwasaki

1994-01-26T23:59:59.000Z

306

Performance limits of heliostat fields  

SciTech Connect

Geometric and thermodynamic arguments are used to derive upper limits on the performance of a solar energy collection system, consisting of an axisymmetric heliostat field, a solar tower, secondary optics and a black receiver. Performance limits on collected power, concentration, and work output are presented. Performance of tower systems with several secondary optics options is compared: tower-top Compound Parabolic Concentrator (CPC), Tailored Edge-Ray Concentrator (TERC) approximated by a cone, and Cassegrainian with ground-level CPC or Compound Elliptic Concentrator (CEC). Optimized ray tracing is used to generate the design parameters of the secondary concentrators that yield the highest optical efficiency. The results show that the tower-top Cone provides the best performance regarding both concentration and efficiency, except for very large fields. The Cassegrainian designs come in second, but become equal and even better than the Cone for large fields. The results for the Cassegrainian are sensitive to the value of the reflectivity, due to the additional reflections incurred. The choice of a CEC is better than a CPC for the terminal concentration in a Cassegrainian system, but the difference is small. The suitability of the different design options for high-temperature solar applications is discussed. The recommendations regarding optical configuration depend on field size, as well as on application-specific constraints.

Kribus, A.; Krupkin, V.; Yogev, A. [Weizmann Inst. of Science, Rehovot (Israel). Environmental Sciences and Energy Research Dept.; Spirkl, W. [Ludwig-Maximilians-Univ. Muenchen (Germany). Sektion Physik

1998-11-01T23:59:59.000Z

307

Web Force-Field (WebFF)  

Science Conference Proceedings (OSTI)

Web Force-Field (WebFF). Summary: ... WebFF - A web hosted, extensible force field repository with integrated assignment engine. Description: ...

2013-07-19T23:59:59.000Z

308

Evaluation of Electric Field Exposure Assessment Methods  

Science Conference Proceedings (OSTI)

This evaluation of electric field exposure assessment methods highlights a renewed interest in characterizing electric field exposures and their attendant perceptible nuisance shocks.

2008-09-26T23:59:59.000Z

309

BLM Stillwater Field Office | Open Energy Information  

Open Energy Info (EERE)

Stillwater Field Office Jump to: navigation, search Name BLM Stillwater Field Office Short Name Stillwater Parent Organization BLM Carson City District Office Address 5665 Morgan...

310

Nonproliferation & Homeland Security Field Support | Global and...  

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

and Homeland Security Field Support Group provides radiological assistance to federal and state agencies under the DOE Radiological Assistance Program (RAP), field support for...

311

Pennsylvania Natural Gas Underground Storage Depleted Fields...  

U.S. Energy Information Administration (EIA) Indexed Site

Underground Storage Depleted Fields Capacity (Million Cubic Feet) Pennsylvania Natural Gas Underground Storage Depleted Fields Capacity (Million Cubic Feet) Decade Year-0 Year-1...

312

Extending Depth of Field via Multifocus Fusion.  

E-Print Network (OSTI)

??In digital imaging systems, due to the nature of the optics involved, the depth of field is constricted in the field of view. Parts of… (more)

Hariharan, Harishwaran

2011-01-01T23:59:59.000Z

313

Separation of magnetic field lines  

SciTech Connect

The field lines of magnetic fields that depend on three spatial coordinates are shown to have a fundamentally different behavior from those that depend on two coordinates. Unlike two-coordinate cases, a flux tube in a magnetic field that depends on all three spatial coordinates that has a circular cross section at one location along the tube characteristically has a highly distorted cross section at other locations. In an ideal evolution of a magnetic field, the current densities typically increase. Crudely stated, if the current densities increase by a factor {sigma}, the ratio of the long to the short distance across a cross section of a flux tube characteristically increases by e{sup 2{sigma}}, and the ratio of the longer distance to the initial radius increases as e{sup {sigma}}. Electron inertia prevents a plasma from isolating two magnetic field structures on a distance scale shorter than c/{omega}{sub pe}, which is about 10 cm in the solar corona, and reconnection must be triggered if {sigma} becomes sufficiently large. The radius of the sun, R{sub Circled-Dot-Operator }=7 Multiplication-Sign 10{sup 10}cm is about e{sup 23} times larger, so when {sigma} Greater-Than-Or-Equivalent-To 23, two lines separated by c/{omega}{sub pe} at one location can be separated by the full scale of any magnetic structures in the corona at another. The conditions for achieving a large exponentiation, {sigma}, are derived, and the importance of exponentiation is discussed.

Boozer, Allen H. [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States)

2012-11-15T23:59:59.000Z

314

Junction-based field emission structure for field emission display  

DOE Patents (OSTI)

A junction-based field emission display, wherein the junctions are formed by depositing a semiconducting or dielectric, low work function, negative electron affinity (NEA) silicon-based compound film (SBCF) onto a metal or n-type semiconductor substrate. The SBCF can be doped to become a p-type semiconductor. A small forward bias voltage is applied across the junction so that electron transport is from the substrate into the SBCF region. Upon entering into this NEA region, many electrons are released into the vacuum level above the SBCF surface and accelerated toward a positively biased phosphor screen anode, hence lighting up the phosphor screen for display. To turn off, simply switch off the applied potential across the SBCF/substrate. May be used for field emission flat panel displays.

Dinh, Long N. (Concord, CA); Balooch, Mehdi (Berkeley, CA); McLean, II, William (Oakland, CA); Schildbach, Marcus A. (Livermore, CA)

2002-01-01T23:59:59.000Z

315

Evolution of primordial magnetic fields in mean-field approximation  

E-Print Network (OSTI)

We study the evolution of phase-transition-generated cosmic magnetic fields coupled to the primeval cosmic plasma in turbulent and viscous free-streaming regimes. The evolution laws for the magnetic energy density and correlation length, both in helical and non-helical cases, are found by solving the autoinduction and Navier-Stokes equations in mean-field approximation. Analytical results are derived in Minkowski spacetime and then extended to the case of a Friedmann universe with zero spatial curvature, both in radiation and matter dominated eras. The three possible viscous free-streaming phases are characterized by a drag term in the Navier-Stokes equation which depends on the free-steaming properties of neutrinos, photons, or hydrogen atoms, respectively. In the case of non-helical magnetic fields, the magnetic intensity $B$ and the magnetic correlation length $\\xi_B$ evolve asymptotically with the temperature $T$ as $B(T) \\simeq \\kappa_B (N_i v_i)^{\\varrho_1} (T/T_i)^{\\varrho_2}$ and $\\xi_B(T) \\simeq \\kap...

Campanelli, Leonardo

2013-01-01T23:59:59.000Z

316

Field Verification of Distributed Renewable Generation, Volume 1: Renewable Energy Field Test Concepts  

Science Conference Proceedings (OSTI)

This report describes field verification of distributed renewable generation and focuses on renewable energy field test concepts.

2003-03-25T23:59:59.000Z

317

The VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx): Goals, platforms, and field operations  

SciTech Connect

The VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) was an international field program designed to make observations of poorly understood but critical components of the coupled climate system of the southeast Pacific. This region is characterized by strong coastal upwelling, the coolest SSTs in the tropical belt, and is home to the largest subtropical stratocumulus deck on Earth. The field intensive phase of VOCALS-REx took place during October and November 2008 and constitutes a critical part of a broader CLIVAR program (VOCALS) designed to develop and promote scientific activities leading to improved understanding, model simulations, and predictions of the southeastern Pacific (SEP) coupled ocean-atmosphere-land system, on diurnal to interannual timescales. The other major components of VOCALS are a modeling program with a model hierarchy ranging from the local to global scales, and a suite of extended observations from regular research cruises, instrumented moorings, and satellites. The two central themes of VOCALS-REx focus upon (a) links between aerosols, clouds and precipitation and their impacts on marine stratocumulus radiative properties, and (b) physical and chemical couplings between the upper ocean and the lower atmosphere, including the role that mesoscale ocean eddies play. A set of hypotheses designed to be tested with the combined field, monitoring and modeling work in VOCALS is presented here. A further goal of VOCALS-REx is to provide datasets for the evaluation and improvement of large-scale numerical models. VOCALS-REx involved five research aircraft, two ships and two surface sites in northern Chile. We describe the instrument payloads and key mission strategies for these platforms and give a summary of the missions conducted.

Wood, R.; Springston, S.; Mechoso, C. R.; Bretherton, C. S.; A.Weller, R.; Huebert, B.; Straneo, F.; Albrecht, B. A.; Coe, H.; Allen, G.; Vaughan, G.; Daum, P.; Fairall, C.; Chand, D.; Klenner, L. G.; Garreaud, R.; Grados, C.; Covert, D. S.; Bates, T. S.; Krejci, R.; Russell, L. M.; Szoeke, S. d.; Brewer, A.; Yuter, S. E.; Chaigneau, A.; Toniazzo, T.; Minnis, P.; Palikonda, R.; Abel, S. J.; Brown, W. O. J.; Williams, S.; Fochesatto, J.; Brioude, J.; Bower, K. N

2011-01-21T23:59:59.000Z

318

Carlsbad Field Office Manager Selected  

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

Carlsbad Field Office Manager Selected CARLSBAD, N.M., November 10, 2011 - The U.S. Department of Energy's (DOE) Richland Operations Office (RL) Assistant Manager for the River Corridor Joe Franco was selected as Manager for the Carlsbad Field Office (CBFO), which oversees the Waste Isolation Pilot Plant (WIPP). CBFO Deputy Manager Ed Ziemianski has been acting in the CBFO Manager's position for the past year and will continue to serve as Deputy Manager. In operation since 1999, WIPP is a DOE facility designed to safely isolate defense-related transuranic (TRU) waste from people and the environment. Since 2006, Franco was responsible for cleanup and restoration of the 220 square miles of the

319

Diffeomorphisms in group field theories  

SciTech Connect

We study the issue of diffeomorphism symmetry in group field theories (GFT), using the noncommutative metric representation introduced by A. Baratin and D. Oriti [Phys. Rev. Lett. 105, 221302 (2010).]. In the colored Boulatov model for 3d gravity, we identify a field (quantum) symmetry which ties together the vertex translation invariance of discrete gravity, the flatness constraint of canonical quantum gravity, and the topological (coarse-graining) identities for the 6j symbols. We also show how, for the GFT graphs dual to manifolds, the invariance of the Feynman amplitudes encodes the discrete residual action of diffeomorphisms in simplicial gravity path integrals. We extend the results to GFT models for higher-dimensional BF theories and discuss various insights that they provide on the GFT formalism itself.

Baratin, Aristide [Triangle de la Physique, CPHT Ecole Polytechnique, IPhT Saclay, LPT Orsay and Laboratoire de Physique Theorique, CNRS UMR 8627, Universite Paris XI, F-91405 Orsay Cedex (France); Girelli, Florian [School of Physics, University of Sydney, Sydney, New South Wales 2006 (Australia); Oriti, Daniele [Max Planck Institute for Gravitational Physics, Albert Einstein Institute, Am Muehlenberg 1, 14467 Golm (Germany)

2011-05-15T23:59:59.000Z

320

Near-field thermal transistor  

E-Print Network (OSTI)

Using a block of three separated solid elements, a thermal source and drain together with a gate made of an insulator-metal transition material exchanging near-field thermal radiation, we introduce a nanoscale analog of a field-effect transistor which is able to control the flow of heat exchanged by evanescent thermal photons between two bodies. By changing the gate temperature around its critical value, the heat flux exchanged between the hot body (source) and the cold body (drain) can be reversibly switched, amplified, and modulated by a tiny action on the gate. Such a device could find important applications in the domain of nanoscale thermal management and it opens up new perspectives concerning the development of contactless thermal circuits intended for information processing using the photon current rather than the electric current.

Ben-Abdallah, Philippe

2013-01-01T23:59:59.000Z

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


321

The Localized Quantum Vacuum Field  

E-Print Network (OSTI)

A model for the localized quantum vacuum is proposed in which the zero-point energy of the quantum electromagnetic field originates in energy- and momentum-conserving transitions of material systems from their ground state to an unstable state with negative energy. These transitions are accompanied by emissions and re-absorptions of real photons, which generate a localized quantum vacuum in the neighborhood of material systems. The model could help resolve the cosmological paradox associated to the zero-point energy of electromagnetic fields, while reclaiming quantum effects associated with quantum vacuum such as the Casimir effect and the Lamb shift; it also offers a new insight into the Zitterbewegung of material particles.

Daniela Dragoman

2006-03-01T23:59:59.000Z

322

Real Scalar Fields on Manifolds  

E-Print Network (OSTI)

A generic theory of a single real scalar field is considered, and a simple method is presented for obtaining a class of solutions to the equation of motion. These solutions are obtained from a simpler equation of motion that is generated by replacing a set of the original coordinates by a set of generalized coordinates, which are harmonic functions in the spacetime. These ansatz solutions solve the original equation of motion on manifolds that are defined by simple constraints. These manifolds, and their dynamics, are independent of the form of the scalar potential. Some scalar field solutions, and manifolds upon which they exist, are presented for Klein-Gordon and quartic potentials as examples. Solutions existing on leaves of a foliated space may allow inferences of the characteristics expected of exact bulk solutions.

J. R. Morris

2008-10-03T23:59:59.000Z

323

Nuclide-migration field experiments  

Science Conference Proceedings (OSTI)

When considering groundwater flow and radionuclide retention in the complex flow systems that can occur in geologic formations, one has a serious problem in determining if laboratory studies are being performed under conditions appropriate to natural systems. This document is the project plan for a program designed to begin to address these problems. The project is being carried out jointly by the Los Alamos National Laboratory, Sandia National Laboratories, and Argonne National Laboratory. The work has three principal objectives: (1) to develop the experimental, instrumental, and safety techniques necessary to conduct controlled, small-scale radionuclide migration field experiments, including those involving actinides; (2) to use these techniques to define radionuclide migration through rock by performing generic, at-depth experiments under closely monitored conditions; and (3) to determine whether available lithologic, geochemical, and hydrologic properties together with existing or developing transport models are sufficient and appropriate to describe real field conditions.

Erdal, B.R.; Wolfsberg, K.; Johnstone, J.K.; Erickson, K.L.; Friedman, A.M.; Fried, S.; Hines, J.J.

1981-03-01T23:59:59.000Z

324

Geothermal Field Developments in Iceland  

SciTech Connect

The exploration and research carried out in conjunction with the exploitation of the various geothernal fields has vastly deepened our understanding of the hydrothermal systems in Inceland. They have proved to be more diverse with respect to physical state, chemical composition, hydrological properties, and geological control than previously thought. The purpose of the present paper is to review the present state of knowledge regarding the Icelandic geothermal systems, with emphasis on the production and reservoir engineering aspects.

Palmason, G.; Stefansson, V.; Thorhallsson, S.; Thorsteinsson, T.

1983-12-15T23:59:59.000Z

325

Production Hydraulic Packer Field Test  

Science Conference Proceedings (OSTI)

In October 1999, the Rocky Mountain Oilfield Testing Center and Halliburton Energy Services cooperated on a field test of Halliburton's new Production Hydraulic Packer technology on Well 46-TPX-10 at Naval Petroleum Reserve No. 3 near Casper, WY. Performance of the packer was evaluated in set and unset operations. The packer's ability to seal the annulus between the casing and tubing was hydraulically tested and the results were recorded.

Schneller, Tricia; Salas, Jose

2000-06-30T23:59:59.000Z

326

Gamma radiation field intensity meter  

DOE Patents (OSTI)

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

Thacker, L.H.

1994-08-16T23:59:59.000Z

327

Gamma radiation field intensity meter  

SciTech Connect

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

Thacker, Louis H. (Knoxville, TN)

1995-01-01T23:59:59.000Z

328

Gamma radiation field intensity meter  

SciTech Connect

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

Thacker, Louis H. (Knoxville, TN)

1994-01-01T23:59:59.000Z

329

Nuclear stimulation of gas fields  

SciTech Connect

From National Technical Canadian Gas Association; Calgary, Alberta, Canada (17 Oct 1973). The technical bases of the emerging technology of nuclear stimulation of natural gas fields, the potential of this method for increasing the gas supply of the US, and public issues related to this technology are discussed. A technical appendix is provided with information on: reservoir producing characteristics; explosive design, availability, and cost; firing and space of explosives; economic parameters; and tabulated statistics on past and current projects on nuclear stimulation. (LCL)

Randolph, P.L.

1973-09-01T23:59:59.000Z

330

Gamma radiation field intensity meter  

DOE Patents (OSTI)

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

Thacker, L.H.

1995-10-17T23:59:59.000Z

331

THERMAL MODEL CALIBRATION FOR MINOR PLANETS OBSERVED WITH WIDE-FIELD INFRARED SURVEY EXPLORER/NEOWISE  

SciTech Connect

With the Wide-field Infrared Survey Explorer (WISE), we have observed over 157,000 minor planets. Included in these are a number of near-Earth objects, main-belt asteroids, and irregular satellites which have well measured physical properties (via radar studies and in situ imaging) such as diameters. We have used these objects to validate models of thermal emission and reflected sunlight using the WISE measurements, as well as the color corrections derived in Wright et al. for the four WISE bandpasses as a function of effective temperature. We have used 50 objects with diameters measured by radar or in situ imaging to characterize the systematic errors implicit in using the WISE data with a faceted spherical near-Earth asteroid thermal model (NEATM) to compute diameters and albedos. By using the previously measured diameters and H magnitudes with a spherical NEATM model, we compute the predicted fluxes (after applying the color corrections given in Wright et al.) in each of the four WISE bands and compare them to the measured magnitudes. We find minimum systematic flux errors of 5%-10%, and hence minimum relative diameter and albedo errors of {approx}10% and {approx}20%, respectively. Additionally, visible albedos for the objects are computed and compared to the albedos at 3.4 {mu}m and 4.6 {mu}m, which contain a combination of reflected sunlight and thermal emission for most minor planets observed by WISE. Finally, we derive a linear relationship between subsolar temperature and effective temperature, which allows the color corrections given in Wright et al. to be used for minor planets by computing only subsolar temperature instead of a faceted thermophysical model. The thermal models derived in this paper are not intended to supplant previous measurements made using radar or spacecraft imaging; rather, we have used them to characterize the errors that should be expected when computing diameters and albedos of minor planets observed by WISE using a spherical NEATM model.

Mainzer, A.; Masiero, J.; Bauer, J.; Ressler, M.; Eisenhardt, P. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Grav, T. [Department of Physics and Astronomy, Johns Hopkins University, 366 Bloomberg Center, 3400 N. Charles Street, Baltimore, MD 21218 (United States); Wright, E. [UCLA Astronomy, P.O. Box 91547, Los Angeles, CA 90095-1547 (United States); Cutri, R. M. [Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125 (United States); McMillan, R. S. [Lunar and Planetary Laboratory, University of Arizona, 1629 East University Blvd., Kuiper Space Science Bldg. 92, Tucson, AZ 85721-0092 (United States); Cohen, M., E-mail: amainzer@jpl.nasa.gov [Radio Astronomy Laboratory, 601 Campbell Hall, University of California, Berkeley, CA 94720 (United States)

2011-08-01T23:59:59.000Z

332

Designating required vs. optional input fields  

Science Conference Proceedings (OSTI)

This paper describes a study comparing different techniques for visually distingishing required from optional input fields in a form-filling application. Seven techniques were studied: no indication, bold field labels, chevrons in front of the labels, ... Keywords: data input, optional fields, required fields, visual design

Thomas S. Tullis; Ana Pons

1997-03-01T23:59:59.000Z

333

2010 Kansas Field Conference June 24, 2010  

E-Print Network (OSTI)

2010 Kansas Field Conference June 2­4, 2010 Flint Hills, Cross Timbers, and Verdigris River Valley 2 3 4 7 5 6 8 9 10 #12;2010 Field Conference Flint Hills, Cross Timbers, and Verdigris River Valley..........................................................................................1 - 2 Kansas Field Conference 2010 Field Conference Overview "Flint Hills, Cross Timbers

Peterson, Blake R.

334

Field Campaign Guidelines (ARM Climate Research Facility)  

Science Conference Proceedings (OSTI)

The purpose of this document is to establish a common set of guidelines for the Atmospheric Radiation Measurement (ARM) Climate Research Facility for planning, executing, and closing out field campaigns. The steps that guide individual field campaigns are described in the Field Campaign Tracking database tool and are tailored to meet the scope of each specific field campaign.

Voyles, JW

2011-01-17T23:59:59.000Z

335

The spinor field theory of the photon  

E-Print Network (OSTI)

I introduce a spinor field theory for the photon. The three-dimensional vector electromagnetic field and the four-dimensional vector potential are components of this spinor photon field. A spinor equation for the photon field is derived from Maxwell's equations,the relations between the electromagnetic field and the four-dimensional vector potential, and the Lorentz gauge condition. The covariant quantization of free photon field is done, and only transverse photons are obtained. The vacuum energy divergence does not occur in this theory. A covariant "positive frequency" condition is introduced for separating the photon field from its complex conjugate in the presence of the electric current and charge.

Ruo Peng Wang

2011-09-15T23:59:59.000Z

336

Apparatuses and methods for generating electric fields  

DOE Patents (OSTI)

Apparatuses and methods relating to generating an electric field are disclosed. An electric field generator may include a semiconductive material configured in a physical shape substantially different from a shape of an electric field to be generated thereby. The electric field is generated when a voltage drop exists across the semiconductive material. A method for generating an electric field may include applying a voltage to a shaped semiconductive material to generate a complex, substantially nonlinear electric field. The shape of the complex, substantially nonlinear electric field may be configured for directing charged particles to a desired location. Other apparatuses and methods are disclosed.

Scott, Jill R; McJunkin, Timothy R; Tremblay, Paul L

2013-08-06T23:59:59.000Z

337

Category:Field Techniques | Open Energy Information  

Open Energy Info (EERE)

Field Techniques Field Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Field Techniques page? For detailed information on Field Techniques as exploration techniques, click here. Category:Field Techniques Add.png Add a new Field Techniques Technique Subcategories This category has the following 2 subcategories, out of 2 total. D [×] Data Collection and Mapping‎ 5 pages F [+] Field Sampling‎ (2 categories) 4 pages Pages in category "Field Techniques" The following 4 pages are in this category, out of 4 total. D Data Collection and Mapping F Field Sampling H Hand-held X-Ray Fluorescence (XRF) P Portable X-Ray Diffraction (XRD) Retrieved from "http://en.openei.org/w/index.php?title=Category:Field_Techniques&oldid=689815"

338

Phase behavior and miscible process analysis of Cusiana Field hydrocarbon system using a reduced component equation of state  

E-Print Network (OSTI)

Cusiana Field is located in the foothill belt of Llanos basin in eastern Colombia. This field has large reserves of light hydrocarbons in Mirador (Tertiary), Barco and Guadalupe (Cretaceous) formations. The development of this field beginning with Mirador formation is underway, and includes a gas cycling project. A complex hydrocarbon system has been found in the reservoirs. Because of vertical compositional variation, fluids grade from retrograde gas to black oil as they pass through critical conditions. Phase behavior of these fluids has an important effect on the in-place volume determination and on field development strategies. Previous reservoir analysis and predictions have been done using a 10-component equation of state (EOS), characterized with the help of an extensive laboratory measurement program, including PVT depletion experiments, separation-type tests, and gas injection tests. We developed a reduced component equation of state to reduce time and resources required for full-field compositional simulations using the 10-component EOS. Three different lumping schemes were tried, two of them with six components and one with seven. A validation process was carried out to check the consistency of this reduced component EOS. This process consisted of two steps: The first step was the match of a large set of "experimental" type data generated with the 10-component EOS. The second step was the matching of the saturation and compositional path followed by reservoir oil during a simulated gas injection displacement process. A coreflood experiment and a two-dimensional cross-section of the reservoir were simulated with a one-dimensional and a two-dimensional model, respectively. These models, previously developed by British Petroleum, matched laboratory and field data using the 10-component EOS. Here, we replaced the 10-component EOS with our reduced component EOS and compared the results. All three reduced EOS successfully went through the first step of validation, matching the "experimental" PVT data, but only the seven-component EOS got a good match of the oil saturation and compositional path in the second step. This seven-component EOS reduced the simulation time to about 68% for the one-dimensional case and to 60% for the two-dimensional case. Although multicontact miscibility is not reached during the gas displacement process, vaporization of oil by injected lean gas proved to be an efficient oil recovery mechanism.

Brunal Florez, Antonio Jose

1995-01-01T23:59:59.000Z

339

Principles of Arrangement Field Theory  

E-Print Network (OSTI)

In this paper I attempt to summarize the fundamental principles which underlie to Arrangement Field Theory. In my intention the exposition would be the most possible intelligible and self-contained. However the exposed concepts are revisited in the light of the new researches, so that they could appear slightly different than in the previous works. Much emphasis is posed here to the power of theory to predict the number of fermionic families (flavours) and space-time dimensions. I also give a quick glance to the entanglement phenomenon and its interpretation as microscopic wormhole.

Diego Marin

2012-07-07T23:59:59.000Z

340

Eddy-Current-Induced Multipole Field Calculations  

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

Eddy-Current-Induced Multipole Field Calculations Eddy-Current-Induced Multipole Field Calculations September 29, 2003 1 Eddy-Current-Induced Multipole Field Calculations Nicholas S. Sereno, Suk H. Kim 1.0 Abstract Time-varying magnetic fields of magnets in booster accelerators induce substantial eddy currents in the vacuum chambers. The eddy currents in turn act to produce various multi- pole fields that act on the beam. These fields must be taken into account when doing a lat- tice design. In the APS booster, the relatively long dipole magnets (3 meters) are linearly ramped to accelerate the injected 325 MeV beam to 7 GeV. Substantial dipole and sextu- pole fields are generated in the elliptical vacuum chamber from the induced eddy currents. In this note, formulas for the induced dipole and sextupole fields are derived for elliptical and rectangular vacuum chambers for a time-varying dipole field. A discussion is given

Note: This page contains sample records for the topic "thrust belt fields" 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.
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to obtain the most current and comprehensive results.


341

Shape resonances in molecular fields  

SciTech Connect

A shape resonance is a quasibound state in which a particle is temporarily trapped by a potential barrier (i.e., the shape of the potential), through which it may eventually tunnel and escape. This simple mechanism plays a prominent role in a variety of excitation processes in molecules, ranging from vibrational excitation by slow electrons to ionization of deep core levels by X-rays. Moreover, their localized nature makes shape resonances a unifying link between otherwise dissimilar circumstances. One example is the close connection between shape resonances in electron-molecule scattering and in molecular photoionization. Another is the frequent persistence of free-molecule shape resonant behavior upon adsorption on a surface or condensation into a molecular solid. The main focus of this article is a discussion of the basic properties of shape resonances in molecular fields, illustrated by the more transparent examples studied over the last ten years. Other aspects to be discussed are vibrational effects of shape resonances, connections between shape resonances in different physical settings, and examples of shape resonant behavior in more complex cases, which form current challenges in this field.

Dehmer, J.L.

1984-01-01T23:59:59.000Z

342

Shape resonances in molecular fields  

SciTech Connect

A shape resonance is a quasibound state in which a particle is temporarily trapped by a potential barrier (i.e., the shape of the potential), through which it may eventually tunnel and escape. This simple mechanism plays a prominent role in a variety of excitation processes in molecules, ranging from vibrational excitation by slow electrons to ionization of deep core levels by x-rays. Moreover, their localized nature makes shape resonances a unifying link between otherwise dissimilar circumstances. One example is the close connection between shape resonances in electron-molecule scattering and in molecular photoionization. Another is the frequent persistence of free-molecule shape resonant behavior upon adsorption on a surface or condensation into a molecular solid. The main focus of this article is a discussion of the basic properties of shape resonances in molecular fields, illustrated by the more transparent examples studied over the last ten years. Other aspects to be discussed are vibrational effects of shape resonances, connections between shape resonances in different physical settings, and examples of shape resonant behavior in more complex cases, which form current challenges in this field.

Dehmer, J.L.

1984-01-01T23:59:59.000Z

343

High Field Phenomena of Qubits  

E-Print Network (OSTI)

Electron and nuclear spins are very promising candidates to serve as quantum bits (qubits) for proposed quantum computers, as the spin degrees of freedom are relatively isolated from their surroundings, and can be coherently manipulated e.g. through pulsed EPR and NMR. For solid state spin systems, impurities in crystals based on carbon and silicon in various forms have been suggested as qubits, and very long relaxation rates have been observed in such systems. We have investigated a variety of these systems at high magnetic fields in our multi-frequency pulsed EPR/ENDOR spectrometer. A high magnetic field leads to large electron spin polarizations at helium temperatures giving rise to various phenomena that are of interest with respect to quantum computing. For example, it allows the initialization of the both the electron spin as well as hyperfine-coupled nuclear spins in a well defined state by combining millimeter and RF radiation; it can increase the T2 relaxation times by eliminating decoherence due to dipolar interaction; and it can lead to new mechanisms for the coherent electrical readout of electron spins. We will show some examples of these and other effects in Si:P, SiC:N, and nitrogen-related centers in diamond.

J. van Tol; G. W. Morley; S. Takahashi; D. R. McCamey; C. Boehme; M. E. Zvanut

2009-06-11T23:59:59.000Z

344

Spaces of Quantum Field Theories  

E-Print Network (OSTI)

The concept of a "space of quantum field theories" or "theory space" was set out in the 1970's in work of Wilson, Friedan and others. This structure should play an important role in organizing and classifying QFTs, and in the study of the string landscape, allowing us to say when two theories are connected by finite variations of the couplings or by RG flows, when a sequence of QFTs converges to another QFT, and bounding the amount of information needed to uniquely specify a QFT, enabling us to estimate their number. As yet we do not have any definition of theory space which can be used to make such arguments. In this talk, we will describe various concepts and tools which should be developed for this purpose, inspired by the analogous mathematical problem of studying the space of Riemannian manifolds. We state two general conjectures about the space of two-dimensional conformal field theories, and we define a distance function on this space, which gives a distance between any pair of theories, whether or not they are connected by varying moduli. Based on talks given at QTS6 (University of Kentucky), Erice, Texas A& M, and Northwestern University. To appear in the proceedings of QTS6.

Michael R. Douglas

2010-05-16T23:59:59.000Z

345

Aging Logarithmic Galilean Field Theories  

E-Print Network (OSTI)

We analytically compute correlation and response functions of scalar operators for the systems with Galilean and corresponding aging symmetries for general spatial dimensions $d$ and dynamical exponent $z$, along with their logarithmic and logarithmic squared extensions, using the gauge/gravity duality. These non-conformal extensions of the aging geometry are marked by two dimensionful parameters, eigenvalue $\\mathcal M$ of an internal coordinate and aging parameter $\\alpha$. We further perform systematic investigations on two-time response functions for general $d$ and $z$, and identify the growth exponent as a function of the scaling dimensions $\\Delta$ of the dual field theory operators and aging parameter $\\alpha$ in our theory. The initial growth exponent is only controlled by $\\Delta$, while its late time behavior by $\\alpha$ as well as $\\Delta$. These behaviors are separated by a time scale order of the waiting time. We attempt to make contact our results with some field theoretical growth models, such as Kim-Kosterlitz model at higher number of spatial dimensions $d$.

Seungjoon Hyun; Jaehoon Jeong; Bom Soo Kim

2013-03-29T23:59:59.000Z

346

Field testing plan for unsaturated zone monitoring and field studies  

Science Conference Proceedings (OSTI)

The University of Arizona, in cooperation with the Bureau of Economic Geology at The University of Texas at Austin, and Stephens and Associates in Albuquerque, New Mexico has developed a field testing plan for evaluating subsurface monitoring systems. The U.S. Nuclear Regulatory Commission has requested development of these testing plans for low-level radioactive waste disposal sites (LLW) and for monitoring at decommissioned facilities designated under the {open_quotes}Site Decommissioning Management Plan{close_quotes} (SDMP). The tests are conducted on a 50 m by 50 m plot on the University of Arizona`s Maricopa Agricultural Center. Within the 50 m by 50 m plot one finds: (1) an instrumented buried trench, (2) monitoring islands similar to those proposed for the Ward Valley, California LLW Facility, (3) deep borehole monitoring sites, (4) gaseous transport monitoring, and (5) locations for testing non-invasive geophysical measurement techniques. The various subplot areas are instrumented with commercially available instruments such as neutron probes, time domain reflectometry probes, tensiometers, psychrometers, heat dissipation sensors, thermocouples, solution samplers, and cross-hole geophysics electrodes. Measurement depths vary from ground surface to 15 m. The data from the controlled flow and transport experiments, conducted over the plot, will be used to develop an integrated approach to long-term monitoring of the vadose zone at waste disposal sites. The data will also be used to test field-scale flow and transport models. This report describes in detail the design of the experiment and the methodology proposed for evaluating the data.

Young, M.H.; Wierenga, P.J.; Warrick, A.W. [and others

1996-10-01T23:59:59.000Z

347

Geothermal/Well Field | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Geothermal/Well Field < Geothermal(Redirected from Well Field) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Well Fields and Reservoirs General Techniques Tree Techniques Table Regulatory Roadmap NEPA (45) Geothermal energy plant at The Geysers near Santa Rosa in Northern California, the world's largest electricity-generating hydrothermal geothermal development. Copyright © 1995 Warren Gretz Geothermal Well Fields discussion Groups of Well Field Techniques

348

Simulating the interplay between plasma transport, electric field, and magnetic field in the near-Earth nightside magnetosphere  

E-Print Network (OSTI)

field, field aligned currents, Pedersen conductance and fluxpressure and flux tube volume, the field-aligned current can

Gkioulidou, Malamati

2012-01-01T23:59:59.000Z

349

Preliminary geologic map of the geysers steam field and vicinity, Sonoma County, California  

DOE Green Energy (OSTI)

The map symbols include: contact; axis of syncline; axis of anticline; fault; thrust fault; scarp line; landslide deposit; sag pond; hot spring; spring; and zone of hydrothermally altered rock. The attitude of planar surfaces is also indicated. Stratigraphic units are indicated. A generalized geologic map showing major faults and structural units of the Geysers area is included. (JGB)

McLaughlin, R.J.

1974-01-01T23:59:59.000Z

350

File:EIA-MTB-BOE.pdf | Open Energy Information  

Open Energy Info (EERE)

Thrust Belt By 2001 BOE Reserve Class Thrust Belt By 2001 BOE Reserve Class Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(5,100 × 6,600 pixels, file size: 15.99 MB, MIME type: application/pdf) Description Montana Thrust Belt By 2001 BOE Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Montana File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 18:31, 20 December 2010 Thumbnail for version as of 18:31, 20 December 2010 5,100 × 6,600 (15.99 MB) MapBot (Talk | contribs) Automated bot upload

351

ARM - Field Campaign - PGS Validatation  

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

govCampaignsPGS Validatation govCampaignsPGS Validatation Related Campaigns Precision Gas Sampling (PGS) Validation Field Campaign 2008.01.01, Fischer, SGP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : PGS Validatation 2009.03.01 - 2010.02.28 Lead Scientist : Marc Fischer For data sets, see below. Description The focus of this project was the prediction of landscape-scale fluxes of CO2, water, and sensible heat that drive variations in carbon cycle and regional climate (e.g., cloud formation and precipitation). Variation in these fluxes, caused by land use, management, and changing climate, requires models that are parameterized and tested against measurements made in multiple land cover types and over seasonal to inter-annual time scales.

352

ARM - Field Campaign - BDRF Campaign  

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

govCampaignsBDRF Campaign govCampaignsBDRF Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : BDRF Campaign 1998.08.03 - 1998.08.28 Lead Scientist : Donald Slater Summary The BDRF campaign is a CERES (on the TRMM satellite) validation exercise that involves helicopter measurements of upwelling radiation made by an ASD spectrometer and broadband radiometers, along an on-board scanning radiometer that can track a particular pixel in flight (for BDRF). On the ground, surface instruments will be placed in close proximity to "targeted" farm fields (near the central facility) rented from local farmers, representing a variety of vegetation types. These ground instruments will also be located at the central facility. Ground instruments tentatively

353

ARM - Propose a Field Campaign  

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

govCampaignsPropose a Campaign govCampaignsPropose a Campaign Schedule and Availability Preproposals now open for AMF and AAF Preproposals due 1 Feb Invited full proposals due 1 May AAF available Dec 2015 AMF1 available Apr 2016 AMF2 available early 2017 AMF3 available for guest instrumentation or intensive operational periods Forms Propose a Campaign Form Instrument Support Request (ISR) Form (Word, 89KB) Documentation Steps to Send Campaign Data to ARM Data Archive Field Campaign Guidelines (PDF, 1.1MB) Propose a Campaign : Preproposal Form Preproposals are short summaries of the proposed campaign and can originate with any scientist. Before you begin your preproposal, you should review the guidelines for submitting proposals. If you are preparing your preproposals locally on your computer, please

354

Parallel Objects and Field Equations  

E-Print Network (OSTI)

This paper considers a generalization of the existing concept of parallel (with respect to a given connection) geometric objects and its possible usage as a suggesting rule in searching for adequate field equations in theoretical physics. The generalization tries to represent mathematically the two-sided nature of the physical objects, the {\\it change} and the {\\it conservation}. The physical objects are presented mathematically by sections $\\Psi$ of vector bundles, the admissible changes $D\\Psi$ are described as a rsult of the action of appropriate differential operators $D$ on these sections, and the conservation propertieis are accounted for by the requirement that suitable projections of $D\\Psi$ on $\\Psi$ and on other appropriate sections must be zero. It is shown that the most important equations of theoretical physics obey this rule. Extended forms of Maxwell and Yang-Mills equations are also considered.

Stoil Donev; Maria Tashkova

2002-05-30T23:59:59.000Z

355

The incident at Stagg Field  

SciTech Connect

A brief history of the events leading up to the first controlled release of atomic energy under the abandoned West Stands of Scagg Field at the University of Chicago on December 2, 1942. This experiment was a milestone in a multifaceted project geared toward producing an atomic bomb in time to affect the outcome of World War II. This article traces the origins of the Manhattan Project from the first letter written by Einstein to the first successful graphite modulated chain reacting pile and including a brief afterward on the use of the bombs produced by this project on the cities of Hiroshima and Nagasaki. Other articles in this magazine also discuss various aspects of the project and serve, along with this article, as a commemoration of the 50th anniversary of the first controlled chain reaction.

Moore, M.

1992-12-01T23:59:59.000Z

356

Generating Cosmological Gaussian Random Fields  

E-Print Network (OSTI)

We present a generic algorithm for generating Gaussian random initial conditions for cosmological simulations on periodic rectangular lattices. We show that imposing periodic boundary conditions on the real-space correlator and choosing initial conditions by convolving a white noise random field results in a significantly smaller error than the traditional procedure of using the power spectrum. This convolution picture produces exact correlation functions out to separations of L/2, where L is the box size, which is the maximum theoretically allowed. This method also produces tophat sphere fluctuations which are exact at radii $ R \\le L/4 $. It is equivalent to windowing the power spectrum with the simulation volume before discretizing, thus bypassing sparse sampling problems. The mean density perturbation in the volume is no longer constrained to be zero, allowing one to assemble a large simulation using a series of smaller ones. This is especially important for simulations of Lyman-$\\alpha$ systems where sma...

Pen, U L

1997-01-01T23:59:59.000Z

357

Category:Field Sampling | Open Energy Information  

Open Energy Info (EERE)

Category Category Edit History Facebook icon Twitter icon » Category:Field Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Field Sampling page? For detailed information on Field Sampling as exploration techniques, click here. Category:Field Sampling Add.png Add a new Field Sampling Technique Subcategories This category has the following 2 subcategories, out of 2 total. G [×] Gas Sampling‎ 3 pages W [×] Water Sampling‎ 2 pages Pages in category "Field Sampling" The following 4 pages are in this category, out of 4 total. G Gas Sampling R Rock Sampling S Soil Sampling W Water Sampling Retrieved from "http://en.openei.org/w/index.php?title=Category:Field_Sampling&oldid=689818" Category: Field Techniques

358

Geothermal/Well Field | Open Energy Information  

Open Energy Info (EERE)

Geothermal/Well Field Geothermal/Well Field < Geothermal Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Well Fields and Reservoirs General Techniques Tree Techniques Table Regulatory Roadmap NEPA (42) Geothermal energy plant at The Geysers near Santa Rosa in Northern California, the world's largest electricity-generating hydrothermal geothermal development. Copyright © 1995 Warren Gretz Geothermal Well Fields discussion Groups of Well Field Techniques There are many different techniques that are utilized in geothermal well field development and reservoir maintenance depending on the region's geology, economic considerations, project maturity, and other considerations such as land access and permitting requirements. Well field

359

Design of a cusped field plasma thruster  

E-Print Network (OSTI)

A plasma space propulsion thruster has been designed. It is classified as a Cusped Field Thruster (CFT), which refers to the geometry of the magnetic field that influences the flow of electrons and ions. The thruster was ...

Conte, Joseph Richard, III

2012-01-01T23:59:59.000Z

360

Top 100 Oil and Gas Fields  

U.S. Energy Information Administration (EIA)

Appendix B Top 100 Oil and Gas Fields This appendix presents estimates of the proved reserves and production of the top 100 liquids or gas fields by reserves or by ...

Note: This page contains sample records for the topic "thrust belt fields" 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

Burley Field Office | Open Energy Information  

Open Energy Info (EERE)

Burley Field Office Jump to: navigation, search Name BLM Burley Field Office Address 15 East 200 South Place Burley, ID Zip 83318 Phone number 208-677-6600 Website http:...

362

BLM Bishop Field Office | Open Energy Information  

Open Energy Info (EERE)

Bishop Field Office Jump to: navigation, search Name BLM Bishop Field Office Address 351 Pacu Lane, Suite 100 Place Bishop, CA Zip 93514 Website http:www.blm.govcastenfo...

363

BLM Pocatello Field Office | Open Energy Information  

Open Energy Info (EERE)

Pocatello Field Office Jump to: navigation, search Name BLM Pocatello Field Office Address 4350 Cliffs Drive Place Pocatello, ID Zip 83204 Phone number 208-478-6340 Website http:...

364

BLM Ukiah Field Office | Open Energy Information  

Open Energy Info (EERE)

Ukiah Field Office Jump to: navigation, search Name BLM Ukiah Field Office Address 2550 North State Street Place Ukiah, CA Zip 95482 Phone number (707) 468-4000 Website http:...

365

BLM Burley Field Office | Open Energy Information  

Open Energy Info (EERE)

Burley Field Office Jump to: navigation, search Name BLM Burley Field Office Address 15 East 200 South Place Burley, ID Zip 83318 Phone number 208-677-6600 Website http:...

366

Matter Field, Dark Matter and Dark Energy  

E-Print Network (OSTI)

A model concerning particle theory and cosmology is proposed. Matter field, dark matter and dark energy are created by an energy flow from space to primordial matter fields at the phase transition in the early universe.

Masayasu Tsuge

2008-02-01T23:59:59.000Z

367

Workforce Statistics - Pantex Field Office | National Nuclear...  

National Nuclear Security Administration (NNSA)

Statistics - Pantex Field Office Pantex Field Office FY12 Semi Annual Report FY11 Year-End Workforce Diversity Report FY10 Semi Annual Report (pdf, 94KB) Year End Summary (pdf, 202...

368

Holographic thermodynamics and transport of flavor fields.  

E-Print Network (OSTI)

??We use gauge-gravity duality to study a strongly-coupled non-Abelian gauge theory with flavor fields, i.e. fields transforming in the fundamental representation of the gauge group.… (more)

O'Bannon, Andrew Hill, 1979-

2008-01-01T23:59:59.000Z

369

String Field Equations from Generalized Sigma Model  

E-Print Network (OSTI)

I I . i LBNL-39854 String Field Equations fromU C B - P T H - 9 7 / 0 3 String F i e l d Equations fromnew approach for deriving the string field equations from a

Bardakci, K.

2010-01-01T23:59:59.000Z

370

The Higgs field can be expressed through the lepton and quark fields  

E-Print Network (OSTI)

The Higgs field is a central point of the Standard Model supplying masses to other fields through the symmetry breaking mechanism. However, it is associated with an elementary particle which is not yet discovered experimentally. In this short note I suggest a way for expressing the Higgs field through other fields of the Standard Model. If this is the case, being not an independent field, the Higgs field does not require an elementary particle to be associated with it.

Ruslan Sharipov

2007-03-01T23:59:59.000Z

371

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 ...

372

Topological constraints in magnetic field relaxation  

E-Print Network (OSTI)

Stability and reconnection of magnetic fields play a fundamental role in natural and man-made plasma. In these applications the field's topology determines the stability of the magnetic field. Here I will describe the importance of one topology quantifier, the magnetic helicity, which impedes any free decay of the magnetic energy. Further constraints come from the fixed point index which hinders the field to relax into the Taylor state.

Candelaresi, Simon

2013-01-01T23:59:59.000Z

373

Feynman Equation in Hamiltonian Quantum Field Theory  

E-Print Network (OSTI)

Functional Schr\\"{o}dinger equations for interacting fields are solved via rigorous non-perturbative Feynman type integrals.

Alexander Dynin

2000-05-26T23:59:59.000Z

374

Natural Gas Depleted Fields Storage Capacity  

U.S. Energy Information Administration (EIA)

-No Data Reported; --= Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Notes: Existing fields ...

375

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method for generating homogenous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set.

Crow, James T. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

376

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method for generating homogenous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented mirror symmetrically about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set.

Crow, James Terry (Albuquerque, NM)

1998-01-01T23:59:59.000Z

377

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method for generating homogenous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented mirror symmetrically about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially cancelling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set.

Crow, James T. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

378

Active molecular plasma in a magnetic field  

SciTech Connect

The propagation of electromagnetic oscillations in an active molecules plasma in a constant external magnetic field is investigated. (AIP)

Kovtun, V.P.

1981-05-01T23:59:59.000Z

379

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method are disclosed for generating homogeneous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented mirror symmetrically about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set. 26 figs.

Crow, J.T.

1997-06-24T23:59:59.000Z

380

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method for generating homogeneous electromagnetic fields within a volume is disclosed. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented mirror symmetrically about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set. 39 figs.

Crow, J.T.

1998-02-10T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method are disclosed for generating homogeneous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set. 55 figs.

Crow, J.T.

1998-05-05T23:59:59.000Z

382

Workforce Statistics - Sandia Field Office | National Nuclear...  

National Nuclear Security Administration (NNSA)

Sandia Field Office | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response...

383

Workforce Statistics - Pantex Field Office | National Nuclear...  

National Nuclear Security Administration (NNSA)

Pantex Field Office | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response...

384

Primordial magnetic field limits from cosmological data  

SciTech Connect

We study limits on a primordial magnetic field arising from cosmological data, including that from big bang nucleosynthesis, cosmic microwave background polarization plane Faraday rotation limits, and large-scale structure formation. We show that the physically relevant quantity is the value of the effective magnetic field, and limits on it are independent of how the magnetic field was generated.

Kahniashvili, Tina [McWilliams Center for Cosmology and Department of Physics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213 (United States); Department of Physics, Laurentian University, Ramsey Lake Road, Sudbury, Ontario P3E 2C (Canada); Abastumani Astrophysical Observatory, Ilia State University, 2A Kazbegi Ave, Tbilisi, GE-0160 (Georgia); Tevzadze, Alexander G. [Abastumani Astrophysical Observatory, Ilia State University, 2A Kazbegi Ave, Tbilisi, GE-0160 (Georgia); Faculty of Exact and Natural Sciences, Tbilisi State University, 1 Chavchavadze Avenue, Tbilisi, GE-0128 (Georgia); Sethi, Shiv K. [McWilliams Center for Cosmology and Department of Physics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213 (United States); Raman Research Institute, Sadashivanagar, Bangalore 560080 (India); Pandey, Kanhaiya [Raman Research Institute, Sadashivanagar, Bangalore 560080 (India); Ratra, Bharat [Department of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, Kansas 66506 (United States)

2010-10-15T23:59:59.000Z

385

Mean field approach for tracking similar objects  

Science Conference Proceedings (OSTI)

In this paper, we consider the problem of tracking similar objects. We show how a mean field approach can be used to deal with interacting targets and we compare it with Markov Chain Monte Carlo (MCMC). Two mean field implementations are presented. The ... Keywords: Kalman filter, Mean field, Multi-target tracking, Particle filter

C. Medrano; J. E. Herrero; J. Martínez; C. Orrite

2009-08-01T23:59:59.000Z

386

Quantum Field Theory and Representation Theory  

E-Print Network (OSTI)

Quantum Field Theory and Representation Theory Peter Woit woit@math.columbia.edu Department of Mathematics Columbia University Quantum Field Theory and Representation Theory ­ p.1 #12;Outline of the talk · Quantum Mechanics and Representation Theory: Some History Quantum Field Theory and Representation Theory

Woit, Peter

387

DPAD2—A Field Programmable Analog Array  

Science Conference Proceedings (OSTI)

DPAD2 is a Field Programmable Analog Array (FPAA) based on CMOS switched capacitor technology. This paper describes the major design decisions that went into creating DPAD2 with respect to the ultimate goal of the work, being a mixed signal field programmable ... Keywords: CMOS, analog field array

Adrian Bratt; Ian Macbeth

1998-09-01T23:59:59.000Z

388

Field Mapping At Dixie Valley Geothermal Field Area (Wesnousky, Et Al.,  

Open Energy Info (EERE)

2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At Dixie Valley Geothermal Field Area (Wesnousky, Et Al., 2003) Exploration Activity Details Location Dixie Valley Geothermal Field Area Exploration Technique Field Mapping Activity Date Usefulness not indicated DOE-funding Unknown References Steven Wesnousky, S. John Caskey, John W. Bell (2003) Recency Of Faulting And Neotechtonic Framework In The Dixie Valley Geothermal Field And Other Geothermal Fields Of The Basin And Range Retrieved from "http://en.openei.org/w/index.php?title=Field_Mapping_At_Dixie_Valley_Geothermal_Field_Area_(Wesnousky,_Et_Al.,_2003)&oldid=510736" Categories: Exploration Activities DOE Funded Activities What links here

389

Paramagnetic spin-up of a field reversed configuration with rotating magnetic field current drive.  

E-Print Network (OSTI)

??A transverse Rotating Magnetic Field (RMF) can drive toroidal current and sustain the poloidal flux of a Field Reversed Configuration (FRC) through the application of… (more)

Peter, Andrew Maxwell

2009-01-01T23:59:59.000Z

390

Graphene Nanoribbon in Sharply Localized Magnetic Fields  

E-Print Network (OSTI)

We study the effect of a sharply localized magnetic field on the electron transport in a strip (ribbon) of graphene sheet, which allows to give results for the transmission and reflection probability through magnetic barriers. The magnetic field is taken as a single and double delta type localized functions, which are treated later as the zero width limit of gaussian fields. For both field configurations, we evaluate analytically and numerically their transmission and reflection coefficients. The possibility of spacial confinement due to the inhomogeneous field configuration is also investigated.

Abdulaziz D. Alhaidari; Hocine Bahlouli; Abderrahim El Mouhafid; Ahmed Jellal

2011-03-21T23:59:59.000Z

391

Magnetostriction of field-structured magnetoelastomers.  

Science Conference Proceedings (OSTI)

Field-structured magnetic particle composites are an important new class of materials that have great potential as both sensors and actuators. These materials are synthesized by suspending magnetic particles in a polymeric resin and subjecting these to magnetic fields while the resin polymerizes. If a simple uniaxial magnetic field is used, the particles will form chains, yielding composites whose magnetic susceptibility is enhanced along a single direction. A biaxial magnetic field, comprised of two orthogonal ac fields, forms particle sheets, yielding composites whose magnetic susceptibility is enhanced along two principal directions. A balanced triaxial magnetic field can be used to enhance the susceptibility in all directions, and biased heterodyned triaxial magnetic fields are especially effective for producing composites with a greatly enhanced susceptibility along a single axis. Magnetostriction is quadratic in the susceptibility, so increasing the composite susceptibility is important to developing actuators that function well at modest fields. To investigate magnetostriction in these field-structured composites we have constructed a sensitive, constant-stress apparatus capable of 1 ppm strain resolution. The sample geometry is designed to minimize demagnetizing field effects. With this apparatus we have demonstrated field-structured composites with nearly 10,000 ppm strain.

Gulley, Gerald L. (Dominican University, River Forest, IL); Read, Douglas H.; Martin, James Ellis; Huber, Dale L.; Anderson, Robert Alan; Frankamp, Benjamin L.

2005-12-01T23:59:59.000Z

392

Generating Cosmological Gaussian Random Fields  

E-Print Network (OSTI)

We present a generic algorithm for generating Gaussian random initial conditions for cosmological simulations on periodic rectangular lattices. We show that imposing periodic boundary conditions on the real-space correlator and choosing initial conditions by convolving a white noise random field results in a significantly smaller error than the traditional procedure of using the power spectrum. This convolution picture produces exact correlation functions out to separations of L/2, where L is the box size, which is the maximum theoretically allowed. This method also produces tophat sphere fluctuations which are exact at radii $ R \\le L/4 $. It is equivalent to windowing the power spectrum with the simulation volume before discretizing, thus bypassing sparse sampling problems. The mean density perturbation in the volume is no longer constrained to be zero, allowing one to assemble a large simulation using a series of smaller ones. This is especially important for simulations of Lyman-$\\alpha$ systems where small boxes with steep power spectra are routinely used. We also present an extension of this procedure which generates exact initial conditions for hierarchical grids at negligible cost.

Ue-Li Pen

1997-09-25T23:59:59.000Z

393

The Aster's Hoity-Toity Belt  

E-Print Network (OSTI)

the little ones, and was often heard to roar with laughter when one of them particularly tickled him in the sky space. Lady Aster said that it was important that the family receive the respect and admiration of the Aster's space in the Solar System. She traveled way out to the far regions of the Aster's realm. Dawn

394

Notched V-belts Recommended Action  

E-Print Network (OSTI)

Quantity Units 106 Btu $ Electric Energy 37,861 kWh 129 $1,275 Demand 11.8 kW $471 Total 129 $1. You can save additional energy by operating some applications at the same or lower speeds. Greater. #12;DescriptionQtyHP Total HP Current TotalkW Usage CurrentTotal kWhUsage Total SavingskW Total

Tullos, Desiree

395

NETL: Oil & Natural Gas Projects  

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

Major Oil Plays in Utah and Vicinity/PUMP 2 Major Oil Plays in Utah and Vicinity/PUMP 2 DE-FC26-02NT15133 Goal The primary goal of this study is to increase recovery of oil reserves from existing reservoirs and from new discoveries by providing play portfolios for the major oil-producing provinces (Paradox Basin, Uinta Basin, and thrust belt) in Utah and adjacent areas in Colorado and Wyoming. The overall objectives of this study are to: 1) increase recoverable oil from existing reservoirs, 2) add new discoveries, 3) prevent premature abandonment of numerous small fields, 4) increase deliverability through identifying the latest drilling, completion, and secondary/tertiary recovery techniques, and 5) reduce development costs and risk. Performer Utah Geological Survey (UGS), Salt Lake City, UT

396

VDTs: Field levels, epidemiology, and laboratory studies  

SciTech Connect

As the use of video display terminals (VDTs) has expanded, questions have been raised as to whether working at a VDT affects the risk of adverse pregnancy outcome. A particular focus for these questions has been the very low frequency (VLF) magnetic field produced by a VDT's horizontal deflection coil. VDTs also produce VLF electric fields, extremely low frequency (ELF) electric and magnetic fields, and static electric fields, Ten studies of pregnancy outcome in VDT operators have been conducted in six countries, and with one exception, none has concluded that magnetic fields from VDTs may predispose pregnant operators to spontaneous abortion or congenital malformation. The epidemiologic studies conducted thus far do not provide a basis for concluding that VDT work and adverse pregnancy outcome are associated. Studies of fetal resorptions and malformations in rodents exposed to VLF magnetic fields have produced inconsistent findings. Two laboratories in Sweden that studied mice have reported positive results, one laboratory showing field-related malformations (but not resorptions) and the other showing field-related resorptions (but not malformations). Two Canadian laboratories have reported negative results in rats and mice. Studies of avian embryos have also yielded inconsistent results, but lacking a maternal-fetal placental interface, avian embryos are a questionable model for evaluating human reproductive risks. Finally, VLF electric and magnetic fields measured at the operator position are in compliance with field strength standards and guidelines that have been established around the world. 55 refs.

Kavet, R.; Tell, R.A. (Richard Tell Associates, Inc., Las Vegas, NV (USA))

1991-07-01T23:59:59.000Z

397

Field investigation of keyblock stability  

SciTech Connect

Discontinuities in a rock mass can intersect an excavation surface to form discrete blocks (keyblocks) which can be unstable. This engineering problem is divided into two parts: block identification, and evaluation of block stability. One stable keyblock and thirteen fallen keyblocks were observed in field investigations at the Nevada Test Site. Nine blocks were measured in detail sufficient to allow back-analysis of their stability. Measurements included block geometry, and discontinuity roughness and compressive strength. Back-analysis correctly predicted stability or failure in all but two cases. These two exceptions involved situations that violated the stress assumptions of the stability calculations. Keyblock faces correlated well with known joint set orientations. The effect of tunnel orientation on keyblock frequency was apparent. Back-analysis of physical models successfully predicted block pullout force for two-dimensional models of unit thickness. Two-dimensional (2D) and three-dimensional (3D) analytic models for the stability of simple pyramidal keyblocks were examined. Calculated stability is greater for 3D analyses than for 2D analyses. Calculated keyblock stability increases with larger in situ stress magnitudes, larger lateral stress ratios, and larger shear strengths. Discontinuity stiffness controls block displacement more strongly than it does stability itself. Large keyblocks are less stable than small ones, and stability increases as blocks become more slender. Rock mass temperature decreases reduce the confining stress magnitudes and can lead to failure. The pattern of stresses affecting each block face explains conceptually the occurrence of pyramidal keyblocks that are truncated near their apex.

Yow, J.L. Jr.

1985-04-01T23:59:59.000Z

398

Field Offices | National Nuclear Security Administration  

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

Offices | National Nuclear Security Administration Offices | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Field Offices Home > Field Offices Field Offices Printer-friendly version Printer-friendly version Facebook Twitter Youtube Flickr Learn More Welcome to the Sandia Field Office Welcome to the Kansas City Field Office Welcome to the Livermore Field Office

399

Nevada Field Office | National Nuclear Security Administration  

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

Nevada Field Office | National Nuclear Security Administration Nevada Field Office | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our Locations > Nevada Field Office Nevada Field Office http://www.nv.doe.gov/main.aspx Field Office: Located in Las Vegas, Nevada, the Nevada Field Office (NFO) oversees operations for the NNSA Nevada National Security Site. Due to the

400

Golden Field Office Contacts | Department of Energy  

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

Golden Field Office Contacts Golden Field Office Contacts Golden Field Office Contacts On this page you will find address and contact information for the Golden Field Office. Mailing Address: U.S. Department of Energy Golden Field Office 15013 Denver West Parkway Golden, Colorado 80401 Main Number: 720-356-1800 Main Fax: 720-356-1750 Golden Field Office Key Contacts: Business Operations Director (Acting) Doug Kaempf 720-356-1753 Business Services Deputy Director Timothy Meeks 720-356-1403 Chief Counsel Derek Passarelli 720-356-1742 Freedom of Information Act Michele Altieri 720-356-1427 Environmental Oversight Robin Sweeney 720-356-1562 National Laboratory Oversight Doug Hooker 720-356-1578 Financial Oversight Marlys Kinsey 720-356-1427 Procurement Services Director John Meeker 720-356-1399

Note: This page contains sample records for the topic "thrust belt fields" 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

Methane Hydrate Field Studies | Department of Energy  

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

Field Studies Field Studies Methane Hydrate Field Studies Arctic/Alaska North Slope Field Studies Since 2001, DOE has conducted field trials of exploration and production technology in the Alaska North Slope. Although Alaska methane hydrate resources are smaller than marine deposits and currently lack outlets to commercial markets, Alaska provides an excellent laboratory to study E&P technology. The research also has implications for various Alaska resources, including potential gas hydrate resources for local communities, conventional "stranded" gas, as well as Alaska's large unconventional oil resources. The hydrate deposits have been delineated in the process of developing underlying oil fields, and drilling costs are much lower than offshore. DOE-BP Project

402

Field Monitoring Protocol: Heat Pump Water Heaters  

SciTech Connect

This document provides a standard field monitoring protocol for evaluating the installed performance of Heat Pump Water Heaters in residential buildings. The report is organized to be consistent with the chronology of field test planning and execution. Research questions are identified first, followed by a discussion of analysis methods, and then the details of measuring the required information are laid out. A field validation of the protocol at a house near the NREL campus is included for reference.

Sparn, B.; Earle, L.; Christensen, D.; Maguire, J.; Wilson, E.; Hancock, E.

2013-02-01T23:59:59.000Z

403

Supersymmetric extensions of K field theories  

E-Print Network (OSTI)

We review the recently developed supersymmetric extensions of field theories with non-standard kinetic terms (so-called K field theories) in two an three dimensions. Further, we study the issue of topological defect formation in these supersymmetric theories. Specifically, we find supersymmetric K field theories which support topological kinks in 1+1 dimensions as well as supersymmetric extensions of the baby Skyrme model for arbitrary nonnegative potentials in 2+1 dimensions.

Adam, C; Sanchez-Guillen, J; Wereszczynski, A

2012-01-01T23:59:59.000Z

404

Square Butte HVDC modulation system field tests  

SciTech Connect

The authors describe field tests conducted at the Square Butte dc system to validate transfer functions of the digital model for dc current and voltage modulation control design. The field tests and digital model results confirm a dominant interarea mode of oscillation of 0.8 hz. Field tests also established spurious responses in rectifier and inverter frequency measurements which appear to be attributable to transducer distortion.

Grund, C.E. (General Electric Co., Schenectady, NY (USA)); Hauer, J.F. (BPA, Portland, OR (US)); Crane, L.P.; Carlson, D.L. (Minnesota Power and Light Co., Duluth, MN (USA)); Wright, S.E. (EPRI, Palo Alto, CA (US))

1990-01-01T23:59:59.000Z

405

Conformal vector fields on Finsler manifolds  

E-Print Network (OSTI)

Applying concepts and tools from classical tangent bundle geometry and using the apparatus of the calculus along the tangent bundle projection ('pull-back formalism'), first we enrich the known lists of the characterizations of affine vector fields on a spray manifold and conformal vector fields on a Finsler manifold. Second, we deduce consequences on vector fields on the underlying manifold of a Finsler structure having one or two of the mentioned geometric properties.

Szilasi, József

2011-01-01T23:59:59.000Z

406

Braneworlds, Conformal Fields and Dark Energy  

E-Print Network (OSTI)

In the Randall-Sundrum scenario we analize the dynamics of a spherically symmetric 3-brane when matter fields propagate in the bulk. For a well defined class of conformal fields of weight -4 we determine a new set of exact 5-dimensional solutions which localize gravity in the vicinity of the brane and are stable under radion field perturbations. Geometries which describe the dynamics of inhomogeneous dust, generalized dark radiation and homogeneous polytropic dark energy are shown to belong to this set.

Rui Neves

2006-01-06T23:59:59.000Z

407

Development and field application of a mathematical model for predicting the kinematic viscosity of crude oil/diluter mixture under continuous production conditions  

SciTech Connect

Experience producing medium to heavy oil areas has demonstrated that most conventional artificial production systems are inefficient. This situation has been improved by mixing diluter fluids or light crude oil with medium to heavy crude oil downhole. The mixing increases production efficiency, crude oil selling value, and conditions crude to meet minimum selling conditions. An analytical model has been developed to analyze the behavior of crude oil/diluter mixtures under continuous production conditions. The model developed for this study has practical application in field operations. The most important applications are: to select the proper diluter fluid to be used in a specific area; to calculate the exact amount of diluter to be mixed with crude oil to obtain a specific viscosity; to forecast the amount of diluter fluid required for normal and continuous oilfield operations; to predict crude oil-diluter mixture kinematic viscosity under any proportion of the components for economic evaluation; and to calculate API gravities of the produced mixture under continuous operation. The crude oils used in this study have a gravity between 8.6/sup 0/API and 14.3/sup 0/API. The diluters used have a gravity between 31.4/sup 0/API and 63/sup 0/API. The paper presents the analytical model and one application to Venezuelan field in the Orinoco Petroleum Belt, one of the largest oil reserves in the world. Each well in the field has a different viscosity and different production rate. The production rate was considered continuous and under exponential decline.

Alcocer, C.F.; Menzie, D.E.

1986-01-01T23:59:59.000Z

408

Fielding, Utah: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

| Sign Up Search Page Edit with form History Facebook icon Twitter icon Fielding, Utah: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates...

409

Magnetic Braiding and Parallel Electric Fields  

E-Print Network (OSTI)

The braiding of the solar coronal magnetic field via photospheric motions - with subsequent relaxation and magnetic reconnection -- is one of the most widely debated ideas of solar physics. We readdress the theory in the light of developments in three-dimensional magnetic reconnection theory. It is known that the integrated parallel electric field along field lines is the key quantity determining the rate of reconnection, in contrast with the two-dimensional case where the electric field itself is the important quantity. We demonstrate that this difference becomes crucial for sufficiently complex magnetic field structures. A numerical method is used to relax a braided magnetic field to an ideal force-free equilibrium; that equilibrium is found to be smooth, with only large- scale current structures. However, the equilibrium is shown to have a highly filamentary integrated parallel current structure with extremely short length- scales. An analytical model is developed to show that, in a coronal situation, the length scales associated with the integrated parallel current structures will rapidly decrease with increasing complexity, or degree of braiding, of the magnetic field. Analysis shows the decrease in these length scales will, for any finite resistivity, eventually become inconsistent with the stability of a force- free field. Thus the inevitable consequence of the magnetic braiding process is shown to be a loss of equilibrium of the coronal field, probably via magnetic reconnection events.

A. L. Wilmot-Smith; G. Hornig; D. I. Pontin

2008-10-08T23:59:59.000Z

410

Design of a cusped field plasma thruster.  

E-Print Network (OSTI)

??A plasma space propulsion thruster has been designed. It is classified as a Cusped Field Thruster (CFT), which refers to the geometry of the magnetic… (more)

Conte, Joseph Richard, III

2012-01-01T23:59:59.000Z

411

Small-Field Therapy Using EPR  

Science Conference Proceedings (OSTI)

... and the AAPM to address the difficult problems of small-field dosimetry in radiation therapy (eg, GammaKnife, IMRT, Cyber Knife, TomoTherapy ...

2013-03-13T23:59:59.000Z

412

Lorenz fields convey energy as Nadelstrahlung  

E-Print Network (OSTI)

Gauge transformations leave only specific Maxwell fields unchanged. To reveal more, I develop Lorenz field equations for superposed, sourced and unsourced, wave function potentials. In this Maxwell form system, the Lorenz condition is charge conservation. This allows me to define three transformation classes that screen for Lorenz relevance. Nongauge, sans gauge function, Lorentz conditions add polarization fields. These enable emergent, light-like radiation. That from Lissajous potentials is Nadelstrahlung. It conveys energy localized like particles at charge conserving, progressive phase points. Such rays escape discovery in modern Maxwell fields where gauge transformations suppress the polarizations.

H. C. Potter

2009-03-24T23:59:59.000Z

413

Pair Production in Rotating Electric Fields  

E-Print Network (OSTI)

We explore Schwinger pair production in rotating time-dependent electric fields using the real-time DHW formalism. We determine the time evolution of the Wigner function as well as asymptotic particle distributions neglecting back-reactions on the electric field. Whereas qualitative features can be understood in terms of effective Keldysh parameters, the field rotation leaves characteristic imprints in the momentum distribution that can be interpreted in terms of interference and multiphoton effects. These phenomena may seed characteristic features of QED cascades created in the antinodes of a high-intensity standing wave laser field.

Blinne, Alexander

2013-01-01T23:59:59.000Z

414

Pair Production in Rotating Electric Fields  

E-Print Network (OSTI)

We explore Schwinger pair production in rotating time-dependent electric fields using the real-time DHW formalism. We determine the time evolution of the Wigner function as well as asymptotic particle distributions neglecting back-reactions on the electric field. Whereas qualitative features can be understood in terms of effective Keldysh parameters, the field rotation leaves characteristic imprints in the momentum distribution that can be interpreted in terms of interference and multiphoton effects. These phenomena may seed characteristic features of QED cascades created in the antinodes of a high-intensity standing wave laser field.

Alexander Blinne; Holger Gies

2013-11-07T23:59:59.000Z

415

Environmental Energy Technologies Division Thermal Field Tests  

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

Thermal Field Tests Joseph H. Klems, LBNL DOE PEER Review San Francisco, CA April 20, 1999 Environmental Energy Technologies Division Current Work l Skylight Thermal Performance *...

416

Dixie Valley Geothermal Field | Open Energy Information  

Open Energy Info (EERE)

Not Provided DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Dixie Valley Geothermal Field Citation Online Nevada Encyclopedia. Dixie...

417

ARM - Field Campaign - Fall 1997 UAV IOP  

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

These are important features when studying evolving cloud fields and their effect on solar and thermal radiation balance. The high-altitude capability of the Altus also...

418

Field Monitoring Protocol: Heat Pump Water Heaters  

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

Field Monitoring Protocol: Heat Pump Water Heaters B. Sparn, L. Earle, D. Christensen, J. Maguire, and E. Wilson National Renewable Energy Laboratory C.E. Hancock Mountain Energy...

419

Geomagnetic Field and Air Shower Simulations  

E-Print Network (OSTI)

The influence of the geomagnetic field on the development of air showers is studied. The well known International Geomagnetic Reference Field was included in the AIRES air shower simulation program as an auxiliary tool to allow calculating very accurate estimations of the geomagnetic field given the geographic coordinates, altitude above sea level and date of a given event. Some test simulations made for representative cases indicate that some quantities like the lateral distribution of muons experiment significant modifications when the geomagnetic field is taken into account.

A. Cillis; S. J. Sciutto

1997-12-30T23:59:59.000Z

420

,"Shale Natural Gas New Field Discoveries "  

U.S. Energy Information Administration (EIA) Indexed Site

,"Worksheet Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Shale Natural Gas New Field Discoveries ",36,"Annual",2011,"6302009" ,"Release...

Note: This page contains sample records for the topic "thrust belt fields" 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

Field Emission Devices with Carbon Nanofiber Emitters  

Field Emission Devices with Carbon Nanofiber Emitters Note: The technology described above is an early stage opportunity. Licensing rights to this intellectual ...

422

Optimization of offshore natural gas field development.  

E-Print Network (OSTI)

?? In this thesis the target is to find the optimal development solution of an offshore natural gas field. Natural gas is increasing in importance… (more)

Johansen, Gaute Rannem

2011-01-01T23:59:59.000Z

423

Condenser for illuminating a ring field  

DOE Patents (OSTI)

A series of segments of a parent aspheric mirror having one foci at at a si-point source of radiation and the other foci at the radius of a ring field have all but one or all of their beams translated and rotated by sets of mirrors such that all of the beams pass through the real entrance pupil of a ring field camera about one of the beams and fall onto the ring field radius as a coincident image as an arc of the ring field.

Sweatt, William C. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

424

Condenser for illuminating a ring field  

DOE Patents (OSTI)

A series of segments of a parent aspheric mirror having one foci at a point source of radiation and the other foci at the radius of a ring field have all but one or all of their beams translated and rotated by sets of mirrors such that all of the beams pass through the real entrance pupil of a ring field camera about one of the beams and fall onto the ring field radius as a coincident image as an arc of the ring field. 5 figs.

Sweatt, W.C.

1994-11-01T23:59:59.000Z

425

Categorical Exclusion Determinations: Golden Field Office | Department...  

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

Golden Field Office April 20, 2010 CX-001720: Categorical Exclusion Determination Job Creation and Petroleum Independence through Ethanol-85 (E85) in Texas CX(s) Applied:...

426

PHASE-FIELD CRYSTAL MODELING OF NANOCRYSTAL ...  

Science Conference Proceedings (OSTI)

PHASE-FIELD CRYSTAL MODELING OF NANOCRYSTAL GROWTH. Edwin J. Schwalbach, James A. Warren, Kuo-An Wu, and Peter W. Voorhees. ...

427

A molecular mechanics force field for lignin  

DOE Green Energy (OSTI)

A CHARMM molecular mechanics force field for lignin is derived. Parameterization is based on reproducing quantum mechanical data of model compounds. Partial atomic charges are derived using the RESP electrostatic potential fitting method supplemented by the examination of methoxybenzene:water interactions. Dihedral parameters are optimized by fitting to critical rotational potentials and bonded parameters are obtained by optimizing vibrational frequencies and normal modes. Finally, the force field is validated by performing a molecular dynamics simulation of a crystal of a lignin fragment molecule and comparing simulation-derived structural features with experimental results. Together with the existing force field for polysaccharides, this lignin force field will enable full simulations of lignocellulose.

Petridis, Loukas [ORNL; Smith, Jeremy C [ORNL

2009-02-01T23:59:59.000Z

428

,"Natural Gas Depleted Fields Storage Capacity "  

U.S. Energy Information Administration (EIA) Indexed Site

Depleted Fields Storage Capacity " ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Natural...

429

Chiral field theory of 0{sup -+} glueball  

Science Conference Proceedings (OSTI)

A chiral field theory of 0{sup -+} glueball is presented. The Lagrangian of this theory is constructed by adding a 0{sup -+} glueball field to a successful Lagrangian of the chiral field theory of pseudoscalar, vector, and axial-vector mesons. The couplings between the pseodoscalar glueball field and the mesons are revealed via a U(1) anomaly. Quantitative study of the physical processes of the 0{sup -+} glueball of m=1.405 GeV is presented. The theoretical predictions can be used to identify the 0{sup -+} glueball.

Li Bingan [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506 (United States)

2010-06-01T23:59:59.000Z

430

Field Asymmetric Ion Mobility Spectrometry (FAIMS ...  

Summary. Field asymmetric Ion mobility spectrometry (FAIMS), wherein ions are separated and/or characterized by differences in their mobility in high ...

431

DOE Research and Development Accomplishments Fielded Search  

Office of Scientific and Technical Information (OSTI)

Search Sort results by Relevancy AuthorInventor Title PublicationIssue Date Ascending Descending All Fields Bibliographic Data Title Author(s)Inventor(s) Number Submit Clear...

432

Field Operation Program - Neighborhood Electric Vehicle Fleet...  

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

Program Neighborhood Electric Vehicle Fleet Use J. Francfort M. Carroll July 2001 United States Department of Energy INEELEXT-01-00864 Field Operations Program...

433

PIA - Golden Field Office LAN Environment | Department of Energy  

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

Administration Other Agencies You are here Home PIA - Golden Field Office LAN Environment PIA - Golden Field Office LAN Environment PIA - Golden Field Office LAN Environment...

434

2013 Annual Planning Summary for the Kansas City Field Office...  

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

Kansas City Field Office 2013 Annual Planning Summary for the Kansas City Field Office 2013 Annual Planning Summary for the Kansas City Field Office The ongoing and projected...

435

2013 Annual Planning Summary for the Carlsbad Field Office |...  

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

Carlsbad Field Office 2013 Annual Planning Summary for the Carlsbad Field Office 2013 Annual Planning Summary for the Carlsbad Field Office The ongoing and projected Environmental...

436

Direct drive field actuator motors - Energy Innovation Portal  

A positive-drive field actuator motor including a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field ...

437

Geochemical properties of the Beni Bousera (N. Morocco) peridotites : a field and laboratory approach to understanding melt infiltration and extraction in an orogenic peridotite massif  

E-Print Network (OSTI)

The Beni Bousera ultramafic massif is a tectonically emplaced body of upper mantle material that is exposed over 72 km2 in the Betic-Rif-Tell orogenic belt of northern Morocco. The massif is composed primarily of spinel ...

Manthei, Christian D. (Christian David)

2012-01-01T23:59:59.000Z

438

Full-field simulation for development planning and reservoir management at Kuparuk River field  

SciTech Connect

The Kuparuk River oil field on the Alaskan North Slope produces from two stratigraphically independent sands of the Kuparuk River formation. A full-field reservoir model was constructed to support field management and development planning. The model captures essential aspects of two independent producing horizons, hydraulically coupled at the wellbores, and simulates dynamic interactions between the reservoir stands and surface facilities. This paper reports that the field model is used to plan field development on the basis of performance ranking of drillsite expansions, to assess depletion performance effects of reservoir management strategies, and to evaluate alternative depletion processes and associated reservoir and facility interactions of field projects.

Starley, G.P.; Masino, W.H. Jr.; Weiss, J.L.; Bolling, J.D. (Arco Alaska Inc. (US))

1991-08-01T23:59:59.000Z

439

A relativistically covariant version of Bohm's quantum field theory for the scalar field  

E-Print Network (OSTI)

We give a relativistically covariant, wave-functional formulation of Bohm's quantum field theory for the scalar field based on a general foliation of space-time by space-like hypersurfaces. The wave functional, which guides the evolution of the field, is space-time-foliation independent but the field itself is not. Hence, in order to have a theory in which the field may be considered a beable, some extra rule must be given to determine the foliation. We suggest one such rule based on the eigen vectors of the energy-momentum tensor of the field itself.

George Horton; Chris Dewdney

2004-07-13T23:59:59.000Z

440

Chiral effective field theory and nuclear forces  

E-Print Network (OSTI)

We review how nuclear forces emerge from low-energy QCD via chiral effective field theory. The presentation is accessible to the non-specialist. At the same time, we also provide considerable detailed information (mostly in appendices) for the benefit of researchers who wish to start working in this field.

Machleidt, R

2011-01-01T23:59:59.000Z

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


441

Nuclear Dynamics with Effective Field Theories  

E-Print Network (OSTI)

These are the proceedings of the international workshop on "Nuclear Dynamics with Effective Field Theories" held at Ruhr-Universitaet Bochum, Germany from July 1 to 3, 2013. The workshop focused on effective field theories of low-energy QCD, chiral perturbation theory for nuclear forces as well as few- and many-body physics. Included are a short contribution per talk.

Evgeny Epelbaum; Hermann Krebs

2013-09-05T23:59:59.000Z

442

Nuclear Dynamics with Effective Field Theories  

E-Print Network (OSTI)

These are the proceedings of the international workshop on "Nuclear Dynamics with Effective Field Theories" held at Ruhr-Universitaet Bochum, Germany from July 1 to 3, 2013. The workshop focused on effective field theories of low-energy QCD, chiral perturbation theory for nuclear forces as well as few- and many-body physics. Included are a short contribution per talk.

Epelbaum, Evgeny

2013-01-01T23:59:59.000Z

443

D-branes and string field theory  

E-Print Network (OSTI)

In this thesis we study the D-brane physics in the context of Witten's cubic string field theory. We compute first few terms the low energy effective action for the non-abelian gauge field A, from Witten's action. We show ...

Sigalov, Ilya

2006-01-01T23:59:59.000Z

444

Precise shape analysis using field sensitivity  

Science Conference Proceedings (OSTI)

We present a static shape analysis technique to infer the shapes of the heap structures created by a program at run time. Our technique is field sensitive in that it uses field information to compute the shapes. The shapes of the heap structures are ... Keywords: Compilers, Dataflow analysis, Heap analysis, Shape analysis, Static analysis

Sandeep Dasgupta, Amey Karkare, Vinay Kr Reddy

2013-06-01T23:59:59.000Z

445

Field Guide: Visual Inspection of Steel Structures  

Science Conference Proceedings (OSTI)

This EPRI report, one in a series of practical guides designed as reference aids for utility personnel working in the field, visually catalogs the various condition issues that commonly affect transmission line steel structures. The scope includes steel poles, lattice structures, connections, foundations, weathering steel, and coatings.ObjectiveStructural conditions commonly encountered by utility personnel in the field ...

2012-12-11T23:59:59.000Z

446

Numerical Object Oriented Quantum Field Theory Calculations  

E-Print Network (OSTI)

The qft++ package is a library of C++ classes that facilitate numerical (not algebraic) quantum field theory calculations. Mathematical objects such as matrices, tensors, Dirac spinors, polarization and orbital angular momentum tensors, etc. are represented as C++ objects in qft++. The package permits construction of code which closely resembles quantum field theory expressions, allowing for quick and reliable calculations.

M. Williams

2008-05-19T23:59:59.000Z

447

Industry Practices for Field Switchmen Qualification  

Science Conference Proceedings (OSTI)

In 2011, the Electric Power Research Institute (EPRI) Switching Safety & Reliability Task Force launched a project to prepare a report on industry practices for the qualification of field switching personnel. This report summarizes the findings of this research, and outlines the necessary elements of "best practices" for the training and qualification of field switching personnel.

2011-11-23T23:59:59.000Z

448

Visually Accurate Multi-Field Weather Visualization  

Science Conference Proceedings (OSTI)

Weather visualization is a difficult problem because it comprises volumetric multi-field data and traditional surface-based approaches obscure details of the complex three-dimensional structure of cloud dynamics. Therefore, visually accurate volumetric ... Keywords: Multi-Field Visualization, Visually Accurate Visualization, Weather Visualization

Kirk Riley; David Ebert; Charles Hansen; Jason Levit

2003-10-01T23:59:59.000Z

449

Spatial energy spectrum of primordial magnetic fields  

E-Print Network (OSTI)

Here, we analyze the primordial magnetic field transition between a radiative and a matter-dominated universe. The gravitational structure formation affects its evolution and energy spectrum. The structure excitation can trigger magnetic field amplification and the steepening of its energy density spectrum.

Grazyna Siemieniec-Ozieblo

2004-10-04T23:59:59.000Z

450

Discriminative sentence compression with conditional random fields  

Science Conference Proceedings (OSTI)

The paper focuses on a particular approach to automatic sentence compression which makes use of a discriminative sequence classifier known as Conditional Random Fields (CRF). We devise several features for CRF that allow it to incorporate information ... Keywords: Conditional random fields, Machine learning, Natural language syntax, RSS, Sentence compression, Sequence alignment

Tadashi Nomoto

2007-11-01T23:59:59.000Z

451

Parametric instability in scalar gravitational fields  

E-Print Network (OSTI)

We present a brief review on a new dynamical mechanism for a strong field effect in scalar tensor theory. Starting with a summary of the essential features of the theory and subsequent work by several authors, we analytically investigate the parametric excitation of a scalar gravitational field in a spherically symmetric radially pulsating neutron star.

T. B. Davies; C. H. -T. Wang; R. Bingham; J. T. Mendonca

2013-09-17T23:59:59.000Z

452

Dynamic field theory and embodied communication  

Science Conference Proceedings (OSTI)

Dynamical Field Theory is a neurally based approach to embodied and situated cognition, in which information is represented in continuous activation fields defined over metric spaces. The temporal evolution of activation patterns under the influence ... Keywords: embodied cognition, modelling, neural dynamics, turn taking

Yulia Sandamirskaya; Gregor Schöner

2006-04-01T23:59:59.000Z

453

Golden Field Office | Department of Energy  

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

Golden Field Office Golden Field Office Golden Field Office The Golden Field Office was designated a Department of Energy field office in December 1992 to provide EERE with enhanced capability to develop and commercialize renewable energy and energy-efficient technologies. What We Do Golden's mission is to support DOE's Office of Energy Efficiency and Renewable Energy (EERE) as its Business Service Center by awarding grants and contracts for clean energy projects, facilitating research and development (R&D) partnerships to support those technologies, and overseeing the National Renewable Energy Laboratory (NREL), the only national lab solely dedicated to researching and developing renewable energy and energy efficiency technologies. Federal and contractor staff award and manage grants. Staff members also

454

Field Test Best Practices (FTBP) Update  

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

Field Test Best Practices (FTBP) Update: Field Test Best Practices (FTBP) Update: It's here! And we need you! Lieko Earle Dane Christensen Bethany Sparn Building America Stakeholder Meeting 2012-03-02 NATIONAL RENEWABLE ENERGY LABORATORY Identified Field Testing Needs 2 * Difficult to find good general guidelines * Difficult to find examples of good field test plans * Difficult to find information on instrumentation options * No easily-accessible central repository for best practices knowledge * Field tests were taking longer and costing more $$ than initially estimated * We keep reinventing the wheel * Start from scratch each time we write a data-logger program? * Repeat each other's mistakes? NATIONAL RENEWABLE ENERGY LABORATORY What is the FTBP Resource?

455

Categorical Exclusion Determinations: Strategic Petroleum Reserve Field  

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

Strategic Petroleum Reserve Strategic Petroleum Reserve Field Office Categorical Exclusion Determinations: Strategic Petroleum Reserve Field Office Categorical Exclusion Determinations issued by Strategic Petroleum Reserve Field Office. DOCUMENTS AVAILABLE FOR DOWNLOAD August 22, 2013 CX-010876: Categorical Exclusion Determination Smart and Calibrated Pig Surveys of Strategic Petroleum Reserve Raw Water/Crude Oil Pipelines CX(s) Applied: B1.3 Date: 08/22/2013 Location(s): Texas, Louisiana Offices(s): Strategic Petroleum Reserve Field Office August 19, 2013 CX-010877: Categorical Exclusion Determination Clean and Inspect West Hackberry T-15 Brine Tank CX(s) Applied: B1.3 Date: 08/19/2013 Location(s): Louisiana Offices(s): Strategic Petroleum Reserve Field Office August 8, 2013 CX-010878: Categorical Exclusion Determination

456

Affine Toda Systems Coupled to Matter Fields  

E-Print Network (OSTI)

We investigate higher grading integrable generalizations of the affine Toda systems. The extra fields, associated to non zero grade generators, obey field equations of the Dirac type and are regarded as matter fields. The models possess soliton configurations, which can be interpreted as particles of the theory, on the same footing as those associated to fundamental fields. A special subclass of these models is remarkable. They possess a $U(1)$ Noether current which, after a special gauge fixing of the conformal symmetry, is proportional to a topological current. This leads to the confinement of the matter field inside the solitons, which can be regarded as a one dimensional bag model for QCD. These models are also relevent to the study of electron self--localization in (quasi)-one-dimensional electron--phonon systems.

L. A. Ferreira; J-L. Gervais; J. Sanchez Guillen; M. V. Saveliev

1995-12-14T23:59:59.000Z

457

Lifshitz field theories with SDiff symmetries  

E-Print Network (OSTI)

We consider Lifshitz field theories with a dynamical critical exponent z equal to the dimension of space d and with a large group of base space symmetries, concretely space coordinate transformations with unit determinant ("Special Diffeomorphisms"). The field configurations of the theories considered may have the topology of skyrmions, vortices or monopoles, although we focus our detailed investigations on skyrmions. The resulting Lifshitz field theories have a BPS bound and exact soliton solutions saturating the bound, as well as time-dependent topological Q-ball solutions. Finally, we investigate the U(1) gauged versions of the Lifshitz field theories coupled to a Chern-Simons gauge field, where the BPS bound and soliton solutions saturating the bound continue to exist.

Adam, C; Sanchez-Guillen, J; Wereszczynski, A

2012-01-01T23:59:59.000Z

458

Noninvasive valve monitor using alternating electromagnetic field  

SciTech Connect

One or more electrical coils are carefully located on the outside of a valve body. An alternating current passing through the coil(s) results in an alternating electromagnetic field being transmitted into the valve body and valve internals. The electromagnetic field varies in intensity and polarity in the valve. As the position of a valve internal part is changed, the electromagnetic field throughout the valve body and its internals is altered. A passive receiver coil carefully located on the outside of the valve body detects the intensity of the electromagnetic field at that location as an induced electrical voltage in the coil. With the change in position of the valve internal part, there is a corresponding change in the induced voltage as a result of the alteration in the alternating electromagnetic field at that location. Changes in the voltage provide an indication of the position and motion of valve internals.

Eissenberg, David M. (Oak Ridge, TN); Haynes, Howard D. (Knoxville, TN); Casada, Donald A. (Knoxville, TN)

1993-01-01T23:59:59.000Z

459

Comprehending Quantum Theory from Quantum Fields  

E-Print Network (OSTI)

At the primary level of reality as described by quantum field theory, a fundamental particle like an electron represents a stable, discrete, propagating excited state of its underlying quantum field. QFT also tells us that the lowest vacuum state as well as the excited states of such a field is always very active with spontaneous, unpredictable quantum fluctuations. Also an underlying quantum field is known to be indestructible and immutable possessing the same value in each element of spacetime comprising the universe. These characteristics of the primary quantum fields together with the fact that the quantum fluctuations can be cogently substantiated to be quantum coherent throughout the universe provide a possible ontology of the quantum theory. In this picture, the wave function of a quantum particle represents the reality of the inherent quantum fluctuations at the core of the universe and endows the particle its counter intuitive quantum behavior.

Mani Bhaumik

2013-10-04T23:59:59.000Z

460

Quantitative Model of the Cerro Prieto Field  

DOE Green Energy (OSTI)

A three-dimensional model of the Cerro Prieto geothermal field, Mexico, is under development. It is based on an updated version of LBL's hydrogeologic model of the field. It takes into account major faults and their effects on fluid and heat flow in the system. First, the field under natural state conditions is modeled. The results of this model match reasonably well observed pressure and temperature distributions. Then, a preliminary simulation of the early exploitation of the field is performed. The results show that the fluid in Cerro Prieto under natural state conditions moves primarily from east to west, rising along a major normal fault (Fault H). Horizontal fluid and heat flow occurs in a shallower region in the western part of the field due to the presence of permeable intergranular layers. Estimates of permeabilities in major aquifers are obtained, and the strength of the heat source feeding the hydrothermal system is determined.

Halfman, S.E.; Lippmann, M.J.; Bodvarsson, G.S.

1986-01-21T23:59:59.000Z

Note: This page contains sample records for the topic "thrust belt fields" 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

Quantitative model of the Cerro Prieto field  

DOE Green Energy (OSTI)

A three-dimensional model of the Cerro Prieto geothermal field, Mexico, is under development. It is based on an updated version of LBL's hydrogeologic model of the field. It takes into account major faults and their effects on fluid and heat flow in the system. First, the field under natural state conditions is modeled. The results of this model match reasonably well observed pressure and temperature distributions. Then, a preliminary simulation of the early exploitation of the field is performed. The results show that the fluid in Cerro Prieto under natural state conditions moves primarily from east to west, rising along a major normal fault (Fault H). Horizontal fluid and heat flow occurs in a shallower region in the western part of the field due to the presence of permeable intergranular layers. Estimates of permeabilities in major aquifers are obtained, and the strength of the heat source feeding the hydrothermal system is determined.

Halfman, S.E.; Lippmann, M.J.; Bodvarsson, G.S.

1986-03-01T23:59:59.000Z

462

Field Emission Measurements from Niobium Electrodes  

SciTech Connect

Increasing the operating voltage of a DC high voltage photogun serves to minimize space charge induced emittance growth and thereby preserve electron beam brightness, however, field emission from the photogun cathode electrode can pose significant problems: constant low level field emission degrades vacuum via electron stimulated desorption which in turn reduces photocathode yield through chemical poisoning and/or ion bombardment and high levels of field emission can damage the ceramic insulator. Niobium electrodes (single crystal, large grain and fine grain) were characterized using a DC high voltage field emission test stand at maximum voltage -225kV and electric field gradient > 10MV/m. Niobium electrodes appear to be superior to diamond-paste polished stainless steel electrodes.

M. BastaniNejad, P.A. Adderley, J. Clark, S. Covert, J. Hansknecht, C. Hernandez-Garcia, R. Mammei, M. Poelker

2011-03-01T23:59:59.000Z

463

Optimum Low Thrust Elliptic Orbit Transfer using Numerical Averaging  

E-Print Network (OSTI)

perturbations due to solar radiation pressure, atmospheric47 7.1 Solar Radiation98 A.3.1 Solar Radiation

Tarzi, Zahi

2012-01-01T23:59:59.000Z

464

Retrieving Storm Electric Fields from Aircraft Field Mill Data. Part I: Theory  

Science Conference Proceedings (OSTI)

It is shown that the problem of retrieving storm electric fields from an aircraft instrumented with several electric field mill sensors can be expressed in terms of a standard Lagrange multiplier optimization problem. The method naturally removes ...

W. J. Koshak

2006-10-01T23:59:59.000Z

465

Retrieving Storm Electric Fields from Aircraft Field Mill Data. Part II: Applications  

Science Conference Proceedings (OSTI)

The Lagrange multiplier theory developed in Part I of this study is applied to complete a relative calibration of a Citation aircraft that is instrumented with six field mill sensors. When side constraints related to average fields are used, the ...

W. J. Koshak; D. M. Mach; H. J. Christian; M. F. Stewart; M. G. Bateman

2006-10-01T23:59:59.000Z

466

Improper Rotations'Symmetry of Electromagnetic Field and New Conserved Quantity of Complex Fields  

E-Print Network (OSTI)

It is established the partition of linear space $$ over the field of genuine scalars and pseudoscalars, the vectors in which are sets of contravariant and covariant electromagnetic field tensors and pseudotensors $F^{\\mu\

Yearchuck, D

2009-01-01T23:59:59.000Z

467

Reservoir characterization of the upper Merecure and lower Oficina Formations sands in the Leona Este Field, Eastern Venezuela Basin  

E-Print Network (OSTI)

The "S5", "T" and "U1" sands, traditionally described as part of the lower section of the "Oficina" Formation, and the "U2" sand, as part of the upper interval of the "Merecure" Formation, contain the largest oil remaining reserves of the Leona Este Field, which is located in the southern portion of the Eastern Venezuela Basin. Two or more of these reservoir sands, which are interbedded with shales, have been simultaneously produced pursuing an increase in the oil production rate, but an unexpected production performance was obtained: the accelerated and early increase of the water volume associated to the produced oil has caused the shut down of some wells in the Leona Este Field. In order to understand this productive performance and to re-evaluate the hydrocarbon potential of the study interval, it is important to describe these reservoirs in terms of their depositional origin and trap formation. An integrated reservoir model was constructed using all the available geological, geophysical and production data. The hydrocarbon trapping mechanism of each studied stratigraphic interval, traditionally known as the "S5", "TU", "TL", "U1U", "U1L", "U2U", "U2MA", "U2MB" and "U2L" sands, includes two components: ? Stratigraphic component: each stratigraphic interval presents one or more reservoir zones composed by sandy deposits that fill belts of stacked tidal-fluvial channels in a SSE-NNW trending tide-dominated estuarine system. In most intervals, these contemporaneous-in-deposition reservoir zones are not connected due to the lateral variation of facies present in the tide-dominated estuary. ? Structural component: northward dipping strata have been offset by a W-E trending major normal fault and secondary normal faults striking parallel to the major one. The major fault is the southern seal of the hydrocarbon traps. The most important prospects of the study interval are the reservoir zones 1 and 2 of the "U1L" sand, the reservoir zone 3 of the "U2MB" sand, and the "U1U" sand, which show more than 15 feet of average net sand thickness, and contain the largest volume of recoverable oil per reservoir zone in the Leona Este Field.

Flores Millan, Maria Carolina

2001-01-01T23:59:59.000Z

468

Field quality issues in iron-dominated dipoles at low fields  

Science Conference Proceedings (OSTI)

In order to help assess the usable dynamic range of iron-dominated dipoles, field shape data at low field on several Fermi-lab accelerator dipole designs are presented. Emphasis is placed on the systematic and random values of the low field sextupole since it is the first ``allowed`` field error. The Main Injector dipoles provide four times smaller sextupole and more than 20 times less sextupole hysteresis than earlier designs for the Main Ring.

Brown, B.C.

1996-10-01T23:59:59.000Z

469

SchlumbergerRES/Field-Test-Plan.PPT/18/06/00/1 Field Test Plan Michigan  

E-Print Network (OSTI)

1 La ©SchlumbergerRES/Field-Test-Plan.PPT/18/06/00/1 Field Test Plan Michigan QLand, QBorehole, R Camp, Well --- Oil/Gas PL Permit Zone - CONFIDENTIAL - #12;8 La ©SchlumbergerRES/Field-Test-Plan.PPT/18/VSP compiled by Andreas Laake, SLB Project Coordinator Status :October 26, 2000 #12;2 La ©SchlumbergerRES/Field

470

Identifying Infill Locations and Underperformer Wells in Mature Fields using  

E-Print Network (OSTI)

Identifying Infill Locations and Underperformer Wells in Mature Fields using Monthly Production wells rather than the entire field. #12;Introduction Objective Methodology Results Conclusion Objective field. Identify opportunities in mature fields: Sweet spots for infill drilling. Underperformer wells

Mohaghegh, Shahab