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1

Ouachita Electric Coop Corp | Open Energy Information  

Open Energy Info (EERE)

Ouachita Electric Coop Corp Ouachita Electric Coop Corp Jump to: navigation, search Name Ouachita Electric Coop Corp Place Arkansas Utility Id 14238 Utility Location Yes Ownership C NERC Location SERC NERC SPP 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 COMMERCIAL - SCHEDULE 2 Commercial INDUSTRIAL - SCHEDULE 2 Industrial LARGE POWER - SCHEDULE 3: Customer 250 KW or less Industrial LARGE POWER - SCHEDULE 3: Customer over 250 KW Industrial Municipal Street Lighting: 100 Watt Lighting Municipal Street Lighting: 1000 Watt Lighting Municipal Street Lighting: 175 Watt Lighting

2

Frontal Cyclogenesis  

Science Conference Proceedings (OSTI)

A dry baroclinic spectral model is used to study the initation of frontal cyclones in a baroclinic life cycle. The mature cyclone exhibits a frontal cyclone development associated with a finite amplitude interaction between an upper tropospheric ...

C. D. Thorncroft; B. J. Hoskins

1990-10-01T23:59:59.000Z

3

Geothermal potential along the Balcones/Ouachita trend, central Texas: ongoing assessment and selected case studies  

DOE Green Energy (OSTI)

A synopsis of the geologic conditions along the Balcones/Ouachita trend is presented. The problems in defining low-temperature resources and in recognizing anomalies are addressed. Local geologic and hydrologic conditions are assayed in terms of ambient thermal regimes, and hypotheses are presented for the origin of thermal waters.

Woodruff, C.M. Jr.; Macpherson, G.L.; Gever, C.; Caran, S.C.; El Shazly, A.G.

1984-04-01T23:59:59.000Z

4

Tectonic fibrous veins: initiation and evolution. Ouachita Orogen, Arkansas  

E-Print Network (OSTI)

Veins are ubiquitous features in deformed rocks. Despite observations on syntectonic veins spanning two centuries, fundamental questions remain unanswered. Their origin as fractures is largely established but it is still not known why these fractures initiate where they do and how the vein evolves once started. We studied veins from the Lower Ordovician Mazarn Formation in the Arkansas’ Ouachitas combining textural observations, stable isotopes, fluid inclusions, SEM-based cathodoluminescence and electron back-scattered diffraction to understand the initial stage of vein formation, its later evolution, the role of fluids and their environment of formation. The veins are located at boudin necks and are synchronous with cleavage formation. Texturally, veins are characterized by veinlets (thin veins between 5 and 25 ?m thick) that parallel the vein-host interface and fibers (columns of quartz or calcite) perpendicular to the vein-host interface between 30 and 350 ?m wide. Veinlets are localized fractures filled with quartz. The crystallographic orientation of the precipitated material in veinlets is inherited from host grains at the micron scale and replicated as fibers’ lengths grow to centimeters. The vein-forming fluid was cyclically supersaturated yet never very far from saturation. ?18O values of vein quartz and host are within 2‰ of each other suggesting that the fluid was rock-buffered. Nevertheless, ?18O and ?13C define a ‘J’ shaped trend. Although it is not possible to date any portion of this curve, the simplest explanation is that the fluid evolved from rock-buffered in a closed system to fluid-dominated in an open system. The range of pressure-temperature conditions of vein formation is between 275 and 385 °C and 1100 and 3400 bars, from fluid inclusions and quartz-calcite oxygen isotopes thermometry. By examining a vein from tip to middle, we have established a sequence of events from inception to maturity in vein growth. Vein formation starts with folding followed by flattening of resistant sandstone layers which in turn gives rise to boudinage. Boudinage formation allowed for fracture localization along boudin-necks. The vein grew by the repeated addition of veinlets in the neck region. Recrystallization later modified the fibers by obliterating some evidence of the veinlets and moving fiber walls.

Cervantes, Pablo

2007-08-01T23:59:59.000Z

5

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...

6

The Frontal Width Problem  

Science Conference Proceedings (OSTI)

Observations of two low-level frontal passages by a hot-wire anemometer placed at 3 m above the ground provide evidence that frontal zones and the postfrontal regions exhibit enhanced kinetic energy dissipation. These observations support a ...

W. Blumen; M. Piper

1999-09-01T23:59:59.000Z

7

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

8

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

Lü, James Jian-Qiang

9

Frontal Geostrophic Dynamics  

Science Conference Proceedings (OSTI)

From the primitive equations simplified dynamics are derived that apply to frontal situations in which interface slopes are important. The formalism, which eliminates inertial motions, is not Unlike the derivation of the quasi-geostrophic ...

Benoit Cushman-Roisin

1986-01-01T23:59:59.000Z

10

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

11

Effects of all-terrain vehicle trails on stream channel characteristics, Ouachita National Forest, Arkansas  

E-Print Network (OSTI)

Research shows that road and trail crossings have negative impacts on forest streams, and that off-road vehicles are detrimental to the environment. However, little information is available concerning the effects of such vehicles on stream channels and riverine environments. This research investigates the effects of all-terrain vehicles (ATVs), one of the many types of off-road vehicles, on stream channel characteristics in the Ouachita National Forest, Arkansas, where the Wolf Pen Gap All-Terrain Vehicle Trail system was built and opened to public use in 1991. Statistical analysis revealed significant differences in stream pool characteristics between the "pristine" control stream (Caney Creek) and those affected by ATV trails (Board Camp Creek and Gap Creek) in the national forest. Pools in Board Camp Creek and Gap Creek were found to have increased amounts of sands and fines, higher values of embeddedness, lower depths, and less volume. These characteristics are consistent with observations that ATV trails are primary sources of sediment input into stream channels. Statistical differences in pool characteristics between streams affected by forest roads (Brushy Creek) and those by ATV trails were also revealed, although forest roads apparently impact streams to a lesser extent than ATV trails. The effects of roads and trails on stream pool characteristics were illustrated using Geographic Information Systems. These findings have important implications for the ecological integrity of stream systems in areas affected by ATV trails. They also contribute potentially valuable information in the management context.

Rohrer, Deven Michelle

2001-01-01T23:59:59.000Z

12

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...

13

Spatial patterns of ice storm disturbance in the forested landscape of Ouachita Mountains, Arkansas and Oklahoma  

E-Print Network (OSTI)

Large-extent ice storms have received relatively little attention from researchers. This research investigates the effects of abiotic and biotic factors on the spatial patterns of ice storm disturbance on a forested landscape. This investigation provides a landscape-level perspective on the impacts of ice storm disturbance, clarifies the effects on ecosystem dynamics, and will aid future forest management plans. The study was conducted in Ouachita National Forest (ONF) in west-central Arkansas and southeastern Oklahoma and examined approximately 6000 km2 of forest between 150 and 800 m elevation. Normalized Difference Vegeation Index (NDVI) difference values were calculated using two Landsat 7 ETM+ scenes to identify NDVI changes that potentially were associated with ice storm damage to the forests. Forty-six geolocated field sites were used to determine the relationship of NDVI difference to actual forest damage caused by the ice storm by counting the number of downed tree boles intersecting a 100 m transect. These field sites encompassed a broad range of each of the physical variables (i.e. elevation, slope, and aspect), forest type, and degree of damage. The linear regression model determined the relationship between NDVI difference and ice storm damage. Elevation, slope, and aspect were calculated based on individual pixels from the DEM. Categories of forest damage were based on NDVI difference values. A chi-square test of correspondence and Cramer’s V test were then used to analyze relationships of damage to abiotic and biotic variables. The strong, negative relationship observed in the linear regression model suggested that NDVI was representative of ice storm damage in the study area. The chi-square test of correspondence indicated the abiotic and biotic variables all had associations with NDVI difference results (pice storm damage followed closely by slope and aspect. Moderate elevations, moderate slopes, and windward aspects received the highest percentage of major storm damage. Forest type displayed a weak relationship with the extent of damage. The topographic patterns of ice storm damage are similar to patterns found in previous research. Topography influenced spatial patterns of ice storm damage. Elevation, slope, and aspect were all found to be important variables influencing the degree of ice storm damage. Knowledge concerning these spatial patterns is critical for future studies of ecosystem dynamics and forest management practices.

Isaacs, Rachel E.

2007-08-01T23:59:59.000Z

14

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

15

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.

16

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

17

The Thermal Evolution of the Ouachita Orogen, Arkansas and Oklahoma from Quartz-Calcite Thermometry and Fluid Inclusion Thermobarometry  

E-Print Network (OSTI)

To understand the fluid temperature and pressure during the Ouachita orogeny, we used isotopic analysis of syntectonic veins and adjacent host material, quartz-calcite oxygen isotope thermometry and fluid inclusion analysis. The veins were at or near isotopic equilibrium with their host rocks; neither the host nor veins has been isotopically reset. The average isotopic variation in (delta18)O between vein and host is 2.4 plus/minus 1.7% and 0.7 plus/minus 1.7% for quartz and calcite, respectively. The temperature of vein formation from quartz-calcite oxygen isotope thermometry is about 210-430 degrees C. Although this is a large range, the temperature does not vary systematically in the exposed Ordovician through Mississippian rocks. The lack of isotopic difference between host and vein suggests that the host oxygen determined that of the veins. This in turn suggests that the fluid in the rocks did not change regionally. The vitrinite reflectance/temperature of the host rocks increases with restored stratigraphic depth more than that calculated with the quartz-calcite thermometer in veins. Fluid inclusion analysis in vein quartz constrains homogenization temperatures to be from 106-285 degrees C. Isochores from fluid inclusion analyses were constrained using quartz-calcite thermometry and vitrinite reflectance temperatures to calculate vein formation pressures of 0.3?4.7 kbars. These pressures correspond to vein formation depths up to 19 km, assuming an unduplicated stratigraphic section. Using burial curves and a reasonable range of geothermal gradients, vein formation ages are between 300 to 315 Ma, i.e., Early to Middle Pennsylvanian.

Piper, Jennifer

2011-12-01T23:59:59.000Z

18

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...

19

Discrete Frontal Propagation in a Nonconvective Environment  

Science Conference Proceedings (OSTI)

Surface discrete frontal propagation in a wintertime, nonconvective environment is documented using conventional surface and upper-air data and simulated using the PSU–NCAR mesoscale model.

Joseph J. Charney; J. Michael Fritsch

1999-09-01T23:59:59.000Z

20

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

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

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

22

Frontal Instability in a Sheared Basic State  

Science Conference Proceedings (OSTI)

A two-layer frontal model is adapted to investigate the stability of fronts in the presence of potential vorticity (PV) anomalies corresponding to cross-front shear of the mean alongfront flow. Introducing shear modifies the unstable baroclinic ...

Douglas M. Sinton; William D. Heise

1993-06-01T23:59:59.000Z

23

On Frontal Dynamics in Two Model Oceans  

Science Conference Proceedings (OSTI)

Vertically homogeneous variable-temperature layer models are often used to describe upper-ocean variability, the dynamics of jets and fronts included. Frontogenesis is known to have a preference for strong cyclonic shears. When a frontal wave ...

Tor Eldevik

2002-10-01T23:59:59.000Z

24

High-Resolution Analysis of Frontal Fracture  

Science Conference Proceedings (OSTI)

A mesoscale array of dropwindsondes, released in a small rapidly deepening frontal wave cyclone in the eastern North Atlantic during the FRONTS 92 experiment, has been assimilated into a 17-km-grid mesoscale model nested within the Meteorological ...

K. A. Browning; S. P. Ballard; C. S. A. Davitt

1997-06-01T23:59:59.000Z

25

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

26

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

27

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

28

An Explanation for Intense Frontal Updrafts and Narrow Cold-Frontal Rainbands  

Science Conference Proceedings (OSTI)

Measurements with Doppler radar, and instrumented aircraft and towers, have revealed that surface cold fronts often have cross-frontal circulations organized on a scale of a kilometer or less. These circulations include intense updrafts (1 to 20 ...

David B. Parsons

1992-10-01T23:59:59.000Z

29

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

30

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

31

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

32

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

33

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

34

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

35

Frontal oscillatory dynamics predict feedback learning and action adjustment  

Science Conference Proceedings (OSTI)

Frontal oscillatory dynamics in the theta (4-8 Hz) and beta (20-30 Hz) frequency bands have been implicated in cognitive control processes. Here we investigated the changes in coordinated activity within and between frontal brain areas during feedback-based ...

Irene van de Vijver; K. Richard Ridderinkhof; Michael X. Cohen

2011-12-01T23:59:59.000Z

36

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

37

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

38

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

39

WKBJ Approximation of the Stability of a Frontal Mean State  

Science Conference Proceedings (OSTI)

The baroclinic instability of a frontal mean state is investigated using the WKBJ approximation. The results are compared with numerical calculations performed on the same mean state. Excellent agreement (within 5%) is found for jets whose half-...

Petros Ioannou; Richard S. Lindzen

1990-12-01T23:59:59.000Z

40

A Pre-filter Enabling Fast Frontal Face Detection  

Science Conference Proceedings (OSTI)

We present a novel pre-filtering technique that identifies probable frontal illuminated face regions in colour images regardless of translation, orientation, and scale. The face candidate regions are normalised and provide the basis for face verification ...

Stephen C. Y. Chan; Paul H. Lewis

1999-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Fragmentation of Freezing Drops in Shallow Maritime Frontal Clouds  

Science Conference Proceedings (OSTI)

Images of frozen drops with pieces missing were collected on two days of airborne sampling in shallow supercooled stratiform frontal clouds in the coastal waters of Washington State. In those limited regions where ice appeared to be newly formed, ...

Arthur L. Rangno

2008-04-01T23:59:59.000Z

42

Characterizing Thermohaline Intrusions in the North Pacific Subtropical Frontal Zone  

Science Conference Proceedings (OSTI)

A monthlong field survey in July 2007, focused on the North Pacific subtropical frontal zone (STFZ) near 30°N, 158°W, combined towed depth-cycling conductivity–temperature–depth (CTD) profiling with shipboard current observations. Measurements ...

Andrey Y. Shcherbina; Michael C. Gregg; Matthew H. Alford; Ramsey R. Harcourt

2009-11-01T23:59:59.000Z

43

Life Cycle and Mesoscale Frontal Structure of an Intermountain Cyclone  

Science Conference Proceedings (OSTI)

High-resolution analyses and MesoWest surface observations are used to examine the life cycle and mesoscale frontal structure of the “Tax Day Storm,” an intermountain cyclone that produced the second lowest sea level pressure observed in Utah ...

Gregory L. West; W. James Steenburgh

2010-07-01T23:59:59.000Z

44

Rossby Wave Radiation in the Cape Verde Frontal Zone  

Science Conference Proceedings (OSTI)

Radiating baroclinic Rossby waves excited through instability of the Cape Verde frontal zone are proposed as a mechanism for the generation of mesoscale variability at middepth (1000 m) in the southeastern North Atlantic basin. Linear ...

Michael A. Spall

1992-07-01T23:59:59.000Z

45

Near-Inertial Oscillations of Geophysical Surface Frontal Currents  

Science Conference Proceedings (OSTI)

Intrinsic oscillations of stable geophysical surface frontal currents of the unsteady, nonlinear, reduced-gravity shallow-water equations on an f plane are investigated analytically and numerically. For frictional (Rayleigh) currents ...

Angelo Rubino; Sergey Dotsenko; Peter Brandt

2003-09-01T23:59:59.000Z

46

Frontal Circulations in the Presence of Small Moist Symmetric Stability  

Science Conference Proceedings (OSTI)

Observations in saturated frontal regions occasionally show that the flow has become neutral to reversible slantwise displacements along pseudo-angular momentum surfaces so that the effective potential vorticity is nearly zero for further ...

Kerry A. Emanuel

1985-05-01T23:59:59.000Z

47

Diminutive Frontal Waves—A Link between Fronts and Cyclones  

Science Conference Proceedings (OSTI)

A number of recent publications have dealt with cyclone identification and tracking. Following on, this paper extends the typical cyclone life cycle back in time to embrace a new feature called a “diminutive frontal wave.” One aim is to improve ...

Tim D. Hewson

2009-01-01T23:59:59.000Z

48

A Severe Frontal Rainband. Part I. Stormwide Hydrodynamic Structure  

Science Conference Proceedings (OSTI)

A narrow cold frontal band of intense precipitation is examined by means of triple Doppler radar and supporting observations. As the band passed through the Central Valley of California, it was accompanied by strong gusty winds, electrical ...

Richard E. Carbone

1982-02-01T23:59:59.000Z

49

The Organization of Convection in Narrow Cold-Frontal Rainbands  

Science Conference Proceedings (OSTI)

Narrow cold-frontal rainbands are lines of intense precipitation that straddle surface cold fronts. Recent observational work has revealed that the rainfall within the band is organized into regularly spaced ellipsoidal cells called precipitation ...

G. W. Kent Moore

1985-09-01T23:59:59.000Z

50

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

51

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

52

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

53

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

54

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

55

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

56

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

57

Numerical Simulations of an Observed Narrow Cold-Frontal Rainband  

Science Conference Proceedings (OSTI)

A cold-frontal rainband, which occurred during the afternoon of 28 December 1988, is numerically simulated using the Penn State–NCAR three-dimensional MM5 modeling system. This case is characterized by a line of severe convection that has a ...

Chaing Chen; Craig H. Bishop; George S. Lai; Wei-Kuo Tao

1997-06-01T23:59:59.000Z

58

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

59

The Alaskan Arctic Frontal Zone: Forcing by Orography, Coastal Contrast, and the Boreal Forest  

Science Conference Proceedings (OSTI)

Experiments have been conducted with a regional climate model to indicate the conditions required to generate preferred regions of frontal activity in the Alaskan region. Several objective methods of frontal identification were first ...

Amanda H. Lynch; Andrew G. Slater; Mark Serreze

2001-12-01T23:59:59.000Z

60

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

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Microphysical Processes Associated with Intense Frontal Rainbands and the Effect of Evaporation and Melting on Frontal Dynamics  

Science Conference Proceedings (OSTI)

Previous studies have shown that a surface cold front often coincides with a heavy band of precipitation commonly designated as a narrow cold-frontal rainband. The maximum rainfall rate within this band can exceed 100–200 mm h?1. This study uses ...

Mary C. Barth; David B. Parsons

1996-06-01T23:59:59.000Z

62

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

63

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

64

An exercise in forecasting loop current and eddy frontal positions in the Gulf of Mexico  

E-Print Network (OSTI)

An exercise in forecasting loop current and eddy frontal positions in the Gulf of Mexico L.-Y. Oey to forecast Loop Current and Loop Current eddy frontal positions in the Gulf of Mexico, the Princeton Regional (2005), An exercise in forecasting loop current and eddy frontal positions in the Gulf of Mexico

65

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

66

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

67

Case study of Frontal Boundary Study Mission 03  

SciTech Connect

The Frontal Boundary Study was conducted by the Pacific Northwest Laboratory (PNL) for the US Department of Energy in October and November 1989 in central Ohio. This report, which was prepared for the US Environmental Protection Agency, presents the results of the aircraft and surface observations made for one precipitation event during the study, on October 10, 1989. This particular event was selected because of its relatively simple meteorological setting. PNL`s Gulfstream (G-1) aircraft was used to sample trace gas concentrations aloft in the inflow region of the precipitation system. Precipitation chemistry and rainfall rate data are presented for the October 10, 1989, event from the network of surface precipitation samplers. Trace gas concentrations and other meteorological variables measured with the G-1 during flight 03 on this date are included. Meteorological observations obtained with radiosondes and radar are also presented. These data sets can be used to evaluate air quality and wet deposition models.

Barchet, W.R.; Dana, M.T.; Thorp, J.M.

1992-09-01T23:59:59.000Z

68

Case study of Frontal Boundary Study Mission 03  

Science Conference Proceedings (OSTI)

The Frontal Boundary Study was conducted by the Pacific Northwest Laboratory (PNL) for the US Department of Energy in October and November 1989 in central Ohio. This report, which was prepared for the US Environmental Protection Agency, presents the results of the aircraft and surface observations made for one precipitation event during the study, on October 10, 1989. This particular event was selected because of its relatively simple meteorological setting. PNL's Gulfstream (G-1) aircraft was used to sample trace gas concentrations aloft in the inflow region of the precipitation system. Precipitation chemistry and rainfall rate data are presented for the October 10, 1989, event from the network of surface precipitation samplers. Trace gas concentrations and other meteorological variables measured with the G-1 during flight 03 on this date are included. Meteorological observations obtained with radiosondes and radar are also presented. These data sets can be used to evaluate air quality and wet deposition models.

Barchet, W.R.; Dana, M.T.; Thorp, J.M.

1992-09-01T23:59:59.000Z

69

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

Science Conference Proceedings (OSTI)

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

William Blumen

1990-12-01T23:59:59.000Z

70

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

71

Cross-Frontal Exchange in the Middle Atlantic Bight as Evidenced by Surface Drifters  

Science Conference Proceedings (OSTI)

Surface drifters at 10 and 40 m are analyzed to assess cross-frontal exchange characteristics within the Middle Atlantic Bight. This Lagrangian analysis shows a shelfbreak jet characterized by strong and ubiquitous meandering. The drifters ...

M. Susan Lozier; Glen Gawarkiewicz

2001-08-01T23:59:59.000Z

72

The Evolution of Frontal-Geostrophic Vortices in a Two-Layer Ocean  

Science Conference Proceedings (OSTI)

The properties of large amplitude vortices are numerically investigated using a set of two-layer primitive equations. Numerical experiments are systematically conducted for the f and ? plants, quasigeostrophic (small amplitude) and frontal-...

Tomonori Matsuura

1995-10-01T23:59:59.000Z

73

The involvement of the primate frontal cortex-basal ganglia system in arbitrary visuomotor association learning  

E-Print Network (OSTI)

It is the goal of this thesis to examine the frontal cortex-basal ganglia system during arbitrary visuomotor association learning, the forming of arbitrary links between visual stimuli and motor responses (e.g. red means ...

Machon, Michelle S

2009-01-01T23:59:59.000Z

74

An Analysis of Loop Current Frontal Eddies in a ° Atlantic Ocean Model Simulation  

Science Conference Proceedings (OSTI)

The Loop Current frontal eddies (LCFEs) refer to cyclonic cold eddies moving downstream along the outside edge of the Loop Current in the eastern Gulf of Mexico. They have been observed by in situ measurements and satellite imagery, mostly ...

Haosheng Huang; Nan D. Walker; Ya Hsueh; Yi Chao; Robert R. Leben

2013-09-01T23:59:59.000Z

75

Frontal Wave Stability during Moist Deformation Frontogenesis. Part II: The Suppression of Nonlinear Wave Development  

Science Conference Proceedings (OSTI)

In this paper, the role of horizontal deformation and the associated frontogenetic ageostrophic circulation in suppressing the development of nonlinear waves is assessed. Unless linear barotropic frontal waves can become nonlinear, the associated ...

Craig H. Bishop; Alan J. Thorpe

1994-03-01T23:59:59.000Z

76

Analytical Models of Narrow Cold-Frontal Rainbands and Related Phenomena  

Science Conference Proceedings (OSTI)

Simplified versions of the steady analytical models of density current developed by Moncrieff and So are shown to represent archetypes of cold-frontal rainbands (NCFRs) by making comparisons with the limited amount of published observational data ...

Mitchell W. Moncrieff

1989-01-01T23:59:59.000Z

77

Thunderstorms above Frontal Surfaces in Environments without Positive CAPE. Part I: A Climatology  

Science Conference Proceedings (OSTI)

The first of two papers describing thunderstorms that occur above frontal surfaces, frequently in environments without positive convective available potential energy (CAPE), focuses on the climatology of such storms for the conterminous United ...

Bradley R. Colman

1990-05-01T23:59:59.000Z

78

Sources of Mesoscale Variability of Gravity Waves. Part II: Frontal, Convective, and Jet Stream Excitation  

Science Conference Proceedings (OSTI)

We present studies of four cases of mesoscale variance enhancements of horizontal velocity and temperature due to frontal activity, nonfrontal convection, and wind shear. These data were obtained aboard commercial aircraft during the Global ...

David C. Fritts; Gregory D. Nastrom

1992-01-01T23:59:59.000Z

79

Heat and Moisture Budgets and Circulation Characteristics of a Frontal Squall Line  

Science Conference Proceedings (OSTI)

Heat and moisture budgets and mesoscale circulation features for the developing, mature, and dissipating stages of an intense frontal squall line that occurred in the central United States are investigated. The slow propagating behavior of the ...

Xin Lin; Richard H. Johnson

1994-06-01T23:59:59.000Z

80

A Family of Frontal Cyclones over the Western Atlantic Ocean. Part I: A 60-h Simulation  

Science Conference Proceedings (OSTI)

Despite marked improvements in the predictability of rapidly deepening extratropical cyclones, many operational models still have great difficulties in predicting frontal cyclogenesis that often begins as a mesoscale vortex embedded in a large-...

Da-Lin Zhang; Ekaterina Radeva; John Gyakum

1999-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Cold and Warm Frontal Circulations in an Idealized Moist Semigeostrophic Baroclinic Wave  

Science Conference Proceedings (OSTI)

Diagnoses are presented of the three-dimensional vertical circulation for a coupled cold-warm frontal system in an idealized moist semi-geostrophic (SG) baroclinic wave. The vertical circulation is computed in SG space where the solution ...

Qin Xu

1990-10-01T23:59:59.000Z

82

A Study of Frontal Dynamics with Application to the Australian Summertime “Cool Change”  

Science Conference Proceedings (OSTI)

The dynamics of frontal evolution is investigated in the context of the Australian summertime cool change using a two-dimensional numerical model. The model is essentially the same as that used by Reeder and Smith, but with different initial ...

Michael J. Reeder; Roger K. Smith

1987-02-01T23:59:59.000Z

83

Real-Time Operational Forecasting on Shipboard of the Iceland-Faeroe Frontal Variability  

Science Conference Proceedings (OSTI)

Real-time operational shipboard forecasts of Iceland-Faeroe frontal variability were executed for the first time with a primitive equation mode. High quality, intensive hydrographic surveys during August 1993 were used for initialization, ...

A. R. Robinson; H. G. Arango; W. G. Leslie; A. J. Miller; A. Warn-Varnas; P-M. Poulain

1996-02-01T23:59:59.000Z

84

Formation and Evolution of Frontal Rainbands and Geostrophic Potential Vorticity Anomalies  

Science Conference Proceedings (OSTI)

A viscous semigeostrophic model is developed and used to study the formation and evolution of frontal rainbands in association with the dry and moist geostrophic potential vorticity (GPV) anomalies. The numerical results show that when moist GPV (...

Qin Xu

1992-04-01T23:59:59.000Z

85

A Study of the Iceland–Faeroe Frontal Variability Using the Multiscale Energy and Vorticity Analysis  

Science Conference Proceedings (OSTI)

The multiscale nonlinear interactive Iceland–Faeroe frontal (IFF) variability during 14–22 August 1993 is investigated for complex dynamics with the localized multiscale energy and vorticity analysis (MS-EVA). In terms of multiscale window ...

Xiang San Liang; Allan R. Robinson

2004-12-01T23:59:59.000Z

86

A Computational Model of Information Processing in the Frontal Cortex and Basal Ganglia  

Science Conference Proceedings (OSTI)

Performance on the Wisconsin Card Sort Test (WCST) of patients with schizophrenia, Parkinson's disease (PD), and Huntington's disease (HD) was simulated by a neural network model constructed on principles derived from neuroanatomic loops from the frontal ...

Andrew Amos

2000-05-01T23:59:59.000Z

87

The Pulsed Coherent Doppler Lidar: Observations of Frontal Structure and the Planetary Boundary Layer  

Science Conference Proceedings (OSTI)

The NOAA/WPL pulsed coherent Doppler lidar was used during the Texas Frontal Experiment in 1985 to study mesoscale preconvective atmospheric conditions. On 22 April 1985, the Doppler lidar, in conjunction with serial rawinsonde ascents and ...

Paul J. Neiman; M. A. Shapiro; R. Michael Hardesty; B. Boba Stankov; Rhidian T. Lawrence; Robert J. Zamora; Tamara Hampel

1988-08-01T23:59:59.000Z

88

Relationship between Monthly Frontal Overrunning and Offshore-Onshore Temperature Differences across the Central Gulf Coast  

Science Conference Proceedings (OSTI)

Under geostrophic and hydrostatic conditions, the Margules equation for the equilibrium slope of a stationary front is applied to study the relationship between monthly frontal overrunning and the temperature difference (?T) across the central ...

S. A. Hsu

1981-12-01T23:59:59.000Z

89

An Investigation of the Influence of Latent Heat Release on Cold-Frontal Motion  

Science Conference Proceedings (OSTI)

The effects of condensational heating on cold-frontal translation speed are explored through the use of potential vorticity (PV) diagnostics and model sensitivity experiments. It is hypothesized that condensational heating can lead to faster ...

Heather Dawn Reeves; Gary M. Lackmann

2004-12-01T23:59:59.000Z

90

Alongfront Variability of Precipitation Associated with a Midlatitude Frontal Zone: TRMM Observations and MM5 Simulation  

Science Conference Proceedings (OSTI)

On 19 February 2001, the Tropical Rainfall Measuring Mission (TRMM) satellite observed complex alongfront variability in the precipitation structure of an intense cold-frontal rainband. The TRMM Microwave Imager brightness temperatures suggested ...

Mei Han; Scott A. Braun; P. Ola G. Persson; Jian-Wen Bao

2009-03-01T23:59:59.000Z

91

Variations Associated with Cores and Gaps of a Pacific Narrow Cold Frontal Rainband  

Science Conference Proceedings (OSTI)

A NOAA P-3 instrumented aircraft observed an intense, fast-moving narrow cold frontal rainband (NCFR) as it approached the California coast on 19 February 2001 during the Pacific Coastal Jets Experiment. Airborne Doppler radar data obtained while ...

David P. Jorgensen; Zhaoxia Pu; P. Ola G. Persson; Wei-Kuo Tao

2003-11-01T23:59:59.000Z

92

An Analysis of Loop Current Frontal Eddies in a 1/6° Atlantic Ocean Model Simulation  

Science Conference Proceedings (OSTI)

The Loop Current Frontal Eddies (LCFEs) refer to cyclonic cold eddies moving downstream along the outside edge of the Loop Current in the eastern Gulf of Mexico. They have been observed by in-situ measurements and satellite imagery, mostly ...

Haosheng Huang; Nan D. Walker; Ya Hsueh; Yi Chao; Robert R. Leben

93

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

94

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

95

Domain-Independent Attribution. Part II: Its Value in the Verification of Dynamical Theories of Frontal Waves and Frontogenesis  

Science Conference Proceedings (OSTI)

Theories of frontogenesis and frontal waves describe development in terms of the interaction of a basic state or environmental flow with a frontal flow. The basic-state flow may comprise a large-scale confluent–diffluent deformation field and/or ...

Craig H. Bishop

1996-01-01T23:59:59.000Z

96

The Arctic Frontal Zone as Seen in the NCEP–NCAR Reanalysis  

Science Conference Proceedings (OSTI)

Calculations of a thermal front parameter using NCEP–NCAR reanalysis data over the period 1979–98 reveal a relative maximum in frontal frequencies during summer along northern Eurasia from about 60° to 70°N, best expressed over the eastern half ...

Mark C. Serreze; Amanda H. Lynch; Martyn P. Clark

2001-04-01T23:59:59.000Z

97

A Model of Gulf Stream Frontal Instabilities, Meanders and Eddies along the Continental Slope  

Science Conference Proceedings (OSTI)

For a simplified model of the Gulf Stream front along a vertical-walled continental slope of a constant-depth ocean basin, the dynamics governing frontal instabilities, meanders, and eddies depend primarily on (i) L0/ R0, the ratio of the cross-...

Lie-Yauw Oey

1988-02-01T23:59:59.000Z

98

The Frontal Air-Sea Interaction Experiment (FASINEX); Part I: Background and Scientific Objectives  

Science Conference Proceedings (OSTI)

The Frontal Air-Sea Interaction Experiment (FASINEX) is a study of the response of the upper ocean to atmospheric forcing in the vicinity of an oceanic front in the subtropical convergence zone southwest of Bermuda, the response of the lower ...

Steven A. Stage; Robert A. Weller

1985-12-01T23:59:59.000Z

99

The Frontal Air-Sea Interaction Experiment (FASINEX); Part II: Experimental Plan  

Science Conference Proceedings (OSTI)

The Frontal Air-Sea Interaction Experiment (FASINEX) is a study of the response of the upper ocean to atmospheric forcing in the vicinity of an oceanic front in the subtropical convergence zone southwest of Bermuda, the response of the lower ...

Steven A. Stage; Robert A. Weller

1986-01-01T23:59:59.000Z

100

Interaction of a Warm-Season Frontal System with the Coastal Mountains of the Western United States. Part I: Prefrontal Onshore Push, Coastal Ridging, and Alongshore Southerlies  

Science Conference Proceedings (OSTI)

Observational analyses and numerical simulations are used to investigate the interaction between a warm-season frontal system/trough and the complex terrain of the western United States. Prior to frontal landfall, synoptically driven offshore ...

Fang-Ching Chien; Clifford F. Mass; Ying-Hwa Kuo

1997-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Extended Sawyer–Eliassen Equation for Frontal Circulations in the Presence of small Viscous Moist Symmetric Stability  

Science Conference Proceedings (OSTI)

The Sawyer–Eliassen (S–E) equation for frontal circulations forced by a geostrophic stretching deformation is extended to include the effects of both negative moist potential vorticity (MPV) and eddy viscosity. Since the moist (precipitation) ...

Qin Xu

1989-09-01T23:59:59.000Z

102

The 12/13 January 1988 Narrow Cold-Frontal Rainband Observed during MFDP/FRONTS 87. Part II: Microphysics  

Science Conference Proceedings (OSTI)

The microphysics of a narrow cold-frontal rainband (NCFR) observed during the MFDP/FRONTS87 experiment is investigated by using a microphysical retrieval model. The equations of evolution of the water substance and of the temperature are solved ...

Virginie Marécal; Danièle Hauser; Frank Roux

1993-04-01T23:59:59.000Z

103

Variability of SO=4, Total Sulfate, NO?3, and Total Nitrate Scavenging Ratios for the Frontal Boundary Study  

Science Conference Proceedings (OSTI)

Precipitation and air concentration data collected during a U.S. Department of Energy–sponsored Frontal Boundary Study (FBS) were used to calculate scavenging ratios. The precipitation data were collected on a 100 km × 100 km surface grid ...

W. E. Davis; J. M. Thorp; R. N. Lee

1997-06-01T23:59:59.000Z

104

A Nonclassical Cold Front Observed during COPS-91: Frontal Structure and the Process of Severe Storm Initiation  

Science Conference Proceedings (OSTI)

This case study addresses the issue of gravity current and bore development at surface cold fronts, and the role of these phenomena in the generation of severe frontal convection. The event investigated occurred on 27 April 1991 during the ...

Steven E. Koch; Wallace L. Clark

1999-08-01T23:59:59.000Z

105

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

106

A Cold Frontal Rainband Observed during the LANDES-FRONTS 84 Experiment: Mesoscale and Small-Scale Structure Inferred from Dual-Doppler Radar Analysis.  

Science Conference Proceedings (OSTI)

This paper presents the kinematic structure of a cold frontal rainband associated with a secondary cold front which moved over southwest of France on 4 June 1984.

Y. Lemaitre; G. Scialom; P. Amayenc

1989-07-01T23:59:59.000Z

107

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

108

Leaning-based travel interfaces revisited: frontal versus sidewise stances for flying in 3D virtual spaces  

Science Conference Proceedings (OSTI)

In this paper we revisit the design of leaning-based travel interfaces and propose a design space to categorize existing implementations. Within the design space, frontal and sidewise stances when using a flying surfboard interface were compared through ... Keywords: 3d virtual spaces., leaning-based travel interface, navigation, stance

Jia Wang; Rob Lindeman

2012-12-01T23:59:59.000Z

109

Organization and Structure of Clouds and Precipitation on the Mid-Atlantic Coast of the United States. Part I: Synoptic Evolution of a Frontal System from the Rockies to the Atlantic Coast  

Science Conference Proceedings (OSTI)

The frontal structure of a cyclone that developed in the lee of the Rocky Mountains and moved eastward across the United States is examined. The evolutions and interactions of three frontal features are traced: the primary cold front, a shallow ...

John D. Locatelli; Joseph M. Sienkiewicz; Peter V. Hobbs

1989-05-01T23:59:59.000Z

110

Ouachita County, Arkansas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

512°, -92.9375739° 512°, -92.9375739° 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":33.5828512,"lon":-92.9375739,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

111

Ouachita Parish, Louisiana: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

90.9265333° 90.9265333° 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":32.3258583,"lon":-90.9265333,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

112

Organization and Structure of Clouds and Precipitation on the Mid-Atlantic Coast of the United States. Part II: The Mesoscale and Microscale Structures of Some Frontal Rainbands  

Science Conference Proceedings (OSTI)

The mesoscale and microscale structures of the clouds and precipitation associated with a frontal system on the mid-Atlantic Coast of the United States are investigated using radar reflectivity and Doppler velocity data, surface mesonet, ...

Joseph M. Sienkiewicz; John D. Locatelli; Peter V. Hobbs; Bart Geerts

1989-05-01T23:59:59.000Z

113

Seasonal Evolutions of Atmospheric Response to Decadal SST Anomalies in the North Pacific Subarctic Frontal Zone: Observations and a Coupled Model Simulation  

Science Conference Proceedings (OSTI)

Potential impacts of pronounced decadal-scale variations in the North Pacific sea surface temperature (SST) that tend to be confined to the subarctic frontal zone (SAFZ) upon seasonally varying atmospheric states are investigated, by using 48-yr ...

Bunmei Taguchi; Hisashi Nakamura; Masami Nonaka; Nobumasa Komori; Akira Kuwano-Yoshida; Koutarou Takaya; Atsushi Goto

2012-01-01T23:59:59.000Z

114

Numerical Modeling of Sulfur and Nitrogen Chemistry in a Narrow Cold-Frontal Rainband: The Impact of Meteorological and Chemical Parameters  

Science Conference Proceedings (OSTI)

To better understand the impact of various meteorological and chemical parameters on chemical deposition from winter storms, the chemistry and microphysics of a narrow cold-frontal rainband and its associated stratiform region were examined with ...

Mary C. Barth

1994-07-01T23:59:59.000Z

115

The 12/13 January 1988 Narrow Cold-Frontal Rainband Observed during MFDP/FRONTS 87. Part I: Kinematics and Thermodynamics  

Science Conference Proceedings (OSTI)

The kinematic and thermodynamic structure of a narrow cold-frontal rainband (NCFR) observed during the English–French–German MFDP/FRONTS 87 experiment is presented. Radiosonde data indicated a very weak convective instability below 1500-m ...

Frank Roux; Virginie Marécal; Danièle Hauser

1993-04-01T23:59:59.000Z

116

Cross-Front Mixing and Frontal Upwelling in a Controlled Quasi-Permanent Density Front in the Gulf of St. Lawrence  

Science Conference Proceedings (OSTI)

CTD data obtained from three transects across a controlled quasi-permanent density front in the Gulf of St. Lawrence were analyzed for the purpose of investigating cross-front mixing, mechanisms for frontal convergence, secondary circulation ...

C. L. Tang

1983-08-01T23:59:59.000Z

117

The Mesoscale and Microscale Structure and organization of Clouds and precipitation in Midlatitude Cyclones. Part V: The Substructure of Narrow Cold-Frontal Rainbands  

Science Conference Proceedings (OSTI)

The organization and structure of a narrow cold-frontal rainband (NCFR) on the small mesoscale and the microscale have been investigated through quantitative radar reflectivity, Doppler radar observations, airborne observations and surface ...

Peter V. Hobbs; P. Ola G. Persson

1982-02-01T23:59:59.000Z

118

The Mesoscale and Microscale Structure and Organization of Clouds and Precipitation in Midlatitude Cyclones. VI: Wavelike Rainbands Associated With a Cold-Frontal Zone  

Science Conference Proceedings (OSTI)

The cloud and precipitation structure and the airflow associated with wavelike rainbands in a cold-frontal zone have been investigated with Doppler radar, instrumented aircraft, rawinsondes and a network of ground stations. The rainbands were ...

Peng-Yun Wang; David B. Parsons; Peter V. Hobbs

1983-03-01T23:59:59.000Z

119

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

120

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

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

An Observation of Frontal Wave Development on a Shelf-Slope/Warm Core Ring Front Near the Shelf Break South of New England  

Science Conference Proceedings (OSTI)

Small-scale waves have been observed near 40°N, 68°30?W in specially enhanced satellite imagery of a strong temperature front formed in May 1979, between the shelf/slope-water front and warm core ring 79-B. Thew frontal waves had a wavelength of ...

S. R. Ramp; R. C. Beardsley; R. Legeckis

1983-05-01T23:59:59.000Z

122

The Mesoscale and Microscale Structure and Organization of Clouds and Precipitation in Midlatitude Cyclones. VIII: A Model for the “Seeder-Feeder” Process in Warm-Frontal Rainbands  

Science Conference Proceedings (OSTI)

Previous field studies have indicated that warm-frontal rainbands form when ice particles from a “seeder” cloud grow as they fall through a lower-level “feeder” cloud. In this paper we present results from a parameterized numerical model of the ...

Steven A. Rutledge; Peterv Hobbs

1983-05-01T23:59:59.000Z

123

Organization and Structure of Clouds and Precipitation on the Mid-Atlantic Coast of the United States. Part IV: Retrieval of the Thermodynamic and Cloud Microphysical Structures of a Frontal Rainband from Doppler Radar Data  

Science Conference Proceedings (OSTI)

The thermodynamic and cloud structure of a relatively weak wintertime frontal rainband are derived from dual-Doppler radar measurements, soundings and high resolution surface observations, and with a cloud model. These derivations are simplified ...

Bart Geerts; Peter V. Hobbs

1991-05-01T23:59:59.000Z

124

Frontal Interaction with Mesoscale Topography  

Science Conference Proceedings (OSTI)

A two-dimensional, hydrostatic, nearly adiabatic primitive equation model is used to study the evolution of a front passing across topography. Frontogenesis is forced by shearing deformation associated with the nonlinear evolution of an Eady ...

Michael J. Dickinson; David J. Knight

1999-10-01T23:59:59.000Z

125

Synoptic Frontal Analysis: Time for a Reassessment?  

Science Conference Proceedings (OSTI)

For over a half-century, the Bergen School conceptual model of cyclone structure and development has dominated the practice of synoptic meteorology, especially regarding the techniques by which surface synoptic charts are analyzed. Although the ...

Clifford F. Mass

1991-03-01T23:59:59.000Z

126

Frontal collision analysis of City Car  

E-Print Network (OSTI)

This experiment tests the proposed crash system of the CityCar. The car is to fold during the crash to help decrease the impact force experienced by the passengers. The experiment was conducted by running a simulation of ...

Neal, Terance (Terance K.)

2009-01-01T23:59:59.000Z

127

Frontal Focusing of a Flooding Rainstorm  

Science Conference Proceedings (OSTI)

A heavy rainstorm over Kentucky, producing extensive flooding, was concentrated in a narrow band oriented nearly zonally just south of the Ohio River. Analysis of routine surface observations showed that an intense quasi-stationary surface front ...

Frederick Sanders

2000-12-01T23:59:59.000Z

128

Heat Flow And Geothermal Potential In The South-Central United States |  

Open Energy Info (EERE)

And Geothermal Potential In The South-Central United States And Geothermal Potential In The South-Central United States Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Heat Flow And Geothermal Potential In The South-Central United States Details Activities (1) Areas (1) Regions (0) Abstract: Geothermal exploration is typically limited to high-grade hydrothermal reservoirs that are usually found in the western United States, yet large areas with subsurface temperatures above 150 deg. C at economic drilling depths can be found east of the Rocky Mountains. The object of this paper is to present new heat flow data and to evaluate the geothermal potential of Texas and adjacent areas. The new data show that, west of the Ouachita Thrust Belt, the heat flow values are lower than east of the fault zone. Basement heat flow values for the Palo Duro and Fort

129

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

130

Observations of Nonclassical Frontal Propagation and Frontally Forced Gravity Waves Adjacent to Steep Topography  

Science Conference Proceedings (OSTI)

Through the integrated analysis of remote sensing and in situ data taken along the Front Range of Colorado, this study describes the interactions that occurred between a leeside arctic front and topographically modulated flows. These interactions ...

Paul J. Neiman; F. Martin Ralph; Robert L. Weber; Taneil Uttal; Louisa B. Nance; David H. Levinson

2001-11-01T23:59:59.000Z

131

Frontal Rainfall Observation by a Commercial Microwave Communication Network  

Science Conference Proceedings (OSTI)

A novel approach for reconstruction of rainfall spatial–temporal dynamics from a wireless microwave network is presented. It employs a stochastic space–time model based on a rainfall advection model, assimilated using a Kalman filter. The ...

Artem Zinevich; Hagit Messer; Pinhas Alpert

2009-07-01T23:59:59.000Z

132

A Severe Frontal Rainband. Part II: Tornado Parent Vortex Circulation  

Science Conference Proceedings (OSTI)

By means of multiple Doppler radar analysis, Part I established the stormwide hydrodynamic structure as an intense gravity current which advances on a prefrontal low-level jet. Part II examines the initiation and evolution of a tornado parent ...

Richard E. Carbone

1983-11-01T23:59:59.000Z

133

Fully Lagrangian Numerical Solutions of Unbalanced Frontogenesis and Frontal COllapse  

Science Conference Proceedings (OSTI)

Numerical simulation has failed to answer some fundamental questions about atmospheric frontogenesis because of the artificial minimum resolved scale in grid point and spectral models alike. To alleviate this handicap and shed light on some ...

Stephen T. Garner

1989-03-01T23:59:59.000Z

134

A New Frontal Instability: Theory and ERICA Observations  

Science Conference Proceedings (OSTI)

A short-wave instability theory is applied to secondary waves on a narrow cold-front rainband observed during the Experiment on Rapidly Intensifying Cyclones over the Atlantic (ERICA). The basic mean state is approximated by the parabolic, ...

Nathan Paldor; Ching-Hwang Liu; Michael Ghil; Roger M. Wakimoto

1994-11-01T23:59:59.000Z

135

Target selection and pursuit execution in the frontal pursuit area  

E-Print Network (OSTI)

80: Shichinohe N, Akao T, Kurkin S, Fukushima J, KanekoCR, and Fukushima K. Memory and decision making in the2594, 2004. Tanaka M, and Fukushima K. Neuronal responses

Mahaffy, Shaun Patrick

2010-01-01T23:59:59.000Z

136

Simulation of Post-Frontal Boundary Layers Observed During the...  

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

the weak inversion base. Profiles of radiative flux (Figure 3c and d) indicate weak SW absorption throughout the depth of the cloud and longwave (LW) flux divergence (cooling)...

137

Microsoft PowerPoint - Entergy-Hydro-Operations_Smethers [Compatibility Mode]  

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

Ouachita River System Ouachita River System LAKE OUACHITA CITY OF HOT SPRINGS LAKE CATHERINE Blakely Mountain Dam LAKE HAMITLON Carpenter Dam Remmel Dam 1 OUACHITA RIVER DeGray Lake & Dam Blakely Mtn. Dam/Lake Ouachita * Built in 1955 * forms Lake Ouachita * Owned & Operated by ACOE * 2 Units - 6600 CFS * 84 MW @178 ft. Head * AGC Capable Large volume of water * Large volume of water storage * Flood Control is a project purpose 2 project purpose Lake Hamilton / Lake Catherine * 6,897 acres surface * 198 miles shoreline * 1,642 acres surface * 56 miles shoreline * 198 miles shoreline * 70% shoreline developed * 50% of shoreline developed developed * 3,863 docks * 10 270 buildings * 399 docks * 1,391 buildings * 10,270 buildings within 500 ft. of shoreline , g within 500 ft. of shoreline 3 * Highly Developed * Highly Developed

138

The Design, Fabrication, and Calibration of a Micro-Newton Thrust Measurement Stand.  

E-Print Network (OSTI)

??Miniature electric thrusters have been in development for decades for use in space applications such as satellite station keeping and propulsion. The development of these… (more)

Woldtvedt, Jack T.

2011-01-01T23:59:59.000Z

139

Fuel optimal low thrust trajectories for an asteroid sample return mission .  

E-Print Network (OSTI)

??This thesis explores how an Asteroid Sample Return Mission might make use of solar electric propulsion to send a spacecraft on a journey to the… (more)

Rust, Jack W.

2005-01-01T23:59:59.000Z

140

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

Science Conference Proceedings (OSTI)

This paper describes the application of high performance computing to accelerate the development of hypergolic propulsion systems for tactical missiles. Computational fluid dynamics is employed to model the chemically reacting flow within a system's ...

M. Nusca; C.-C. Chen; M. McQuaid

2007-06-01T23:59:59.000Z

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


141

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

Science Conference Proceedings (OSTI)

This paper describes the development and application of high performance computing for the acceleration of tactical missile hypergolic propulsion system development. Computational fluid dynamics is employed to model the chemically reacting flow within ...

Michael J. Nusca; Michael J. McQuaid

2006-06-01T23:59:59.000Z

142

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

Science Conference Proceedings (OSTI)

This paper describes the development and application of high performance computing for the acceleration of tactical missile hypergolic propulsion system development. Computational fluid dynamics (CFD) is employed to model the chemically reacting flow ...

Michael J. Nusca; Michael J. McQuaid

2005-06-01T23:59:59.000Z

143

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

Science Conference Proceedings (OSTI)

This paper describes the application of high performance computing to accelerate the development of hypergolic propulsion systems for tactical missiles. Computational fluid dynamics is employed to model the chemically reacting flow within a system’s ...

Michael J. Nusca; Chiung-Chu Chen; Michael J. McQuaid

2008-07-01T23:59:59.000Z

144

Case Study; A Failure Analysis of a Pinion Thrust Runner Shaft  

Science Conference Proceedings (OSTI)

Symposium, Charles R. Morin Memorial Symposium on Failure Analysis and ... Tools for Failure Event Database Management and Probability Risk Analysis for ...

145

Code Thrust 1400 Aeronautical/Astronautical Engineering (including Aerodynamics, Aerospace Engineering, and Space Technology)  

E-Print Network (OSTI)

Sciences (including Clinical/Medical Laboratory Technologies, Communication Disorders Sciences and Services, Gerontology, Health and Medical Administrative Services, Other Health Professions and Related Services, Environmental health, Geotechnical, Hydraulic, Hydrologic, Sanitary, Structural, and Transportation) 1404

Alabama in Huntsville, University of

146

Electric Energy Challenges of the Future Future Grid Thrust Area 1 White Paper  

E-Print Network (OSTI)

being developed for the smart grid will change grid operations and grid characteristics. With high- prove system reliability and facilitate the management of variable renewable resources. Smart Grid Technologies Future smart grid technologies will also impact reserve requirement determination and our ability

147

Application of Metagenomics for Identification of Novel Petroleum Hydrocarbon Degrading Enzymes in Natural Asphalts from the Rancho La Brea Tar Pits  

E-Print Network (OSTI)

WITH BIODEGRADATION OF CRUDE-OIL IN THE OUACHITA MOUNTAINS,A SPHALTS AND H EAVY O IL Crude oil is an extremely complexto natural gas, liquid crude oil, shale oil, tars and

Baquiran, Jean-Paul Mendoza

2010-01-01T23:59:59.000Z

148

An analysis of thrust of a realistic solar sail with focus on a flight validation mission in a geocentric orbit.  

E-Print Network (OSTI)

?? Several scientifically important space flight missions have been identified that, at this time, can only be practically achieved using a solar sail propulsion system.… (more)

Campbell, Bruce A.

2010-01-01T23:59:59.000Z

149

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

150

Space System Architecture: Final Report of SSPARC: the Space Systems, Policy, and Architecture Research Consortium (Thrust I and II)  

E-Print Network (OSTI)

The Space Systems, Policy and Architecture Research Consortium (SSPARC) was formed to make substantial progress on problems of national importance. The goals of SSPARC were to:

Hastings, Daniel

151

The Development of Open Water-lubricated Polycrystalline Diamond (PCD) Thrust Bearings for Use in Marine Hydrokinetic (MHK) Energy Machines  

Science Conference Proceedings (OSTI)

Polycrstalline diamond (PCD) bearings were designed, fabricated and tested for marine-hydro-kinetic (MHK) application. Bearing efficiency and life were evaluated using the US Synthetic bearing test facility. Three iterations of design, build and test were conducted to arrive at the best bearing design. In addition life testing that simulated the starting and stopping and the loading of real MHK applications were performed. Results showed polycrystalline diamond bearings are well suited for MHK applications and that diamond bearing technology is TRL4 ready. Based on life tests results bearing life is estimated to be at least 11.5 years. A calculation method for evaluating the performance of diamond bearings of round geometry was also investigated and developed. Finally, as part of this effort test bearings were supplied free of charge to the University of Alaska for further evaluation. The University of Alaska test program will subject the diamond bearings to sediment laden lubricating fluid.

Cooley, Craig, H.; Khonsari, Michael,, M; Lingwall, Brent

2012-11-28T23:59:59.000Z

152

Do Frontal Cyclones Change Size? Observed Widths of North Pacific Lows  

Science Conference Proceedings (OSTI)

Wavelet transforms in the longitudinal and latitudinal directions are applied to sea level pressure data for 12 extratropical cyclones. Each low is tracked over time from a stage of small amplitude to a stage of large amplitude. The wavelet ...

Richard Grotjahn; Daniel Hodyss; Cris Castello

1999-06-01T23:59:59.000Z

153

MOTOR SYSTEMS OF FRONTAL LOBE IN PROSIMIAN GALAGOS: AREAS, NUCLEI, AND CONNECTIONS.  

E-Print Network (OSTI)

??My dissertation includes the results of three main projects that examined the organization of premotor systems in prosimian galagos, including the determination of subdivisions of… (more)

Fang, Pei-chun Yoko

2005-01-01T23:59:59.000Z

154

Verification of Mesoscale NWP Forecasts of Abrupt Cold Frontal Wind Changes  

Science Conference Proceedings (OSTI)

During a wildfire, a sharp wind change can lead to an abrupt increase in fire activity and change the rate of spread, endangering firefighters working on what had been the flank of the fire. In southeastern Australia, routine forecast of cold-...

Yimin Ma; Xinmei Huang; Graham A. Mills; Kevin Parkyn

2010-02-01T23:59:59.000Z

155

Environment and Evolution of a Cold-Frontal Mesoscale Convective System  

Science Conference Proceedings (OSTI)

Observations from the Oklahoma-Kansas Preliminary Regional Experiment for STORM-CENTRAL (OK PRE-STORM) have been used to study the evolution and propagation characteristics of a long-lived (?16 h) mesoscale convective system (MCS) that produced ...

Stanley B. Trier; David B. Parsons; John H. E. Clark

1991-10-01T23:59:59.000Z

156

A Review of the Structure and Dynamics of Upper-Level Frontal Zones  

Science Conference Proceedings (OSTI)

This article presents a review of upper-level fronts with the intent of synthesizing observational and modeling studies into a conceptual and dynamical description of these fronts and their evolution relative to the life cycle of midlatitude ...

Daniel Keyser; M. A. Shapiro

1986-02-01T23:59:59.000Z

157

Multiscale Analysis of a Meso-? Frontal Passage in the Complex Terrain of the Colorado Front Range  

Science Conference Proceedings (OSTI)

Data from a mesoscale observing network are used to describe the evolution of a complex boundary between a dry air mass near the foothills of the Rocky Mountains and a shallow moist air mass over the eastern plains. Synoptic-scale analyses ...

Lisa S. Darby; William D. Neff; Robert M. Banta

1999-09-01T23:59:59.000Z

158

Inferior Frontal and Middle Temporal Lobe Contributions to Goal-directed Cognition  

E-Print Network (OSTI)

Wallis, J.D. , Parker, A. , Brass, M. , Crone, E.A. , Hoshi,15, 5870-8. Derrfuss, J. , Brass, M. , Neumann, J. , & vonfor review, Derrfuss, Brass, Neumann & von Cramon, 2005).

Souza, Michael James

2010-01-01T23:59:59.000Z

159

Mesoscale to Submesoscale Transition in the California Current System. Part II: Frontal Processes  

Science Conference Proceedings (OSTI)

This is the second of three papers investigating the regime transition that occurs in numerical simulations for an idealized, equilibrium, subtropical, eastern boundary, upwelling current system similar to the California Current. The emergent ...

X. Capet; J. C. McWilliams; M. J. Molemaker; A. F. Shchepetkin

2008-01-01T23:59:59.000Z

160

The 1993 Superstorm Cold Surge: Frontal Structure, Gap Flow, and Tropical Impact  

Science Conference Proceedings (OSTI)

In the wake of the eastern United States cyclone of 12–14 March 1993, a cold surge, originating over Alaska and western Canada, brought northerlies exceeding 20 m s?1 and temperature decreases up to 15°C over 24 h into Mexico and Central America. ...

David M. Schultz; W. Edward Bracken; Lance F. Bosart; Gregory J. Hakim; Mary A. Bedrick; Michael J. Dickinson; Kevin R. Tyle

1997-01-01T23:59:59.000Z

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


161

Frontal Rainfall-Rate Distribution and Some Conclusions on the Threshold Method  

Science Conference Proceedings (OSTI)

In this paper, the delta function is introduced to describe the observed rainfall-rate distribution including the mixture of discrete and continuous parts. Thus the observed rainfall-rate distribution can be expressed as a simple mathematical ...

Minghu Cheng; Yanjun Qi

2002-11-01T23:59:59.000Z

162

The Frontal Hydraulic Head: A Micro-? Scale (1 km) Triggering Mechanism for Mesoconvective Weather Systems  

Science Conference Proceedings (OSTI)

Measurements from the NOAA Boulder Atmospheric Observatory (BAO) 300 m tower, the National Center for Atmospheric Research (NCAR) Sabreliner aircraft, and the NOAA GOES-5 satellite, give evidence for the cross-front scale collapse of ...

M. A. Shapiro; Tamara Hampel; Doris Rotzoll; F. Mosher

1985-07-01T23:59:59.000Z

163

Frontal Wave Stability during Moist Deformation Frontogenesis. Part I: Linear Wave Dynamics  

Science Conference Proceedings (OSTI)

It has been shown that lower tropospheric potential vorticity zones formed during moist deformation frontogenesis will support growing waves if at some time the frontogenesis ceases. In this paper, the ways in which these waves are affected by ...

Craig H. Bishop; Alan J. Thorpe

1994-03-01T23:59:59.000Z

164

Airborne Dual-Doppler Observations of an Intense Frontal System Approaching the Pacific Northwest Coast  

Science Conference Proceedings (OSTI)

Airborne Doppler radar data, collected off the Pacific Northwest coast by a NOAA WP-3D Orion aircraft over an 8-h period on 8 December 1993 during the Coastal Observations and Simulations with Topography experiment, reveal the mesoscale structure ...

Scott A. Braun; Robert A. Houze Jr.; Bradley F. Smull

1997-12-01T23:59:59.000Z

165

Frontal lobe volume, function, and beta-amyloid pathology in a canine model of aging  

E-Print Network (OSTI)

with a single red coffee jar lid in one of three spatiala second identical coffee jar lid was presented on phase twothird identical coffee jar lid was presented simultaneously

2004-01-01T23:59:59.000Z

166

The Lognormal Fit to Raindrop Spectra from Frontal Convective Clouds in Israel  

Science Conference Proceedings (OSTI)

Measurements of rain drop size spectra in Israel were carried out over a period of two years. It is shown that the size distribution can be best described by a lognormal distribution. With its parameters weighted by a certain choice of moments, ...

Graham Feingold; Zev Levin

1986-10-01T23:59:59.000Z

167

Frontal Analysis in the Light of Abrupt Temperature Changes in a Shallow Valley  

Science Conference Proceedings (OSTI)

The authors examine selected cases of abrupt temperature changes in a shallow valley in rural Oklahoma and examine their wider associations. All changes in the valley, whether rise or fall, are accompanied by a northerly wind shift at or shortly ...

Frederick Sanders; Edwin Kessler

1999-06-01T23:59:59.000Z

168

Beta oscillations in frontal cortex and striatum represent post-processing of successful behavior  

E-Print Network (OSTI)

Beta band (13-30 Hz) oscillations in sensorimotor cortex are associated with motor performance, but the nature of this relationship is not clear. Recently, excessive beta activity in cortico-basal ganglia circuits has been ...

Feingold, Joseph

2011-01-01T23:59:59.000Z

169

Spatial and Temporal Variability of Precipitation and Chemistry: Case Studies from the Frontal Boundary Study  

Science Conference Proceedings (OSTI)

Sequential precipitation and precipitation chemistry measurements were conducted on a 37-site, 100 km × 100 km array in central Ohio during four cyclonic storms during the fall of 1989. Spatial (network) averages and variances in rainfall rate ...

M. Terry Dana

1994-07-01T23:59:59.000Z

170

The Frontal Structure of an Explosive Oceanic Cyclone: Airbone Radar Observations of ERICA IOP 4  

Science Conference Proceedings (OSTI)

Observation taken during the Experiment on Rapidly Intensifying Cyclones over the Atlantic (ERICA) have permitted analyses of explosive oceanic cyclogenesis of unprecedented detail. The most intense of the cyclones that occurred during this ...

Roger M. Wakimoto; Warren Blier; Chinghwang Liu

1992-07-01T23:59:59.000Z

171

Deep-Sea Research II 49 (2002) 60696093 Plankton distribution associated with frontal zones in the  

E-Print Network (OSTI)

117851, Russia. Tel.: +1-95-124-8515; fax: +1-94-124-5983. E-mail addresses: m flint@orc.ru (M.V. Flint

172

The Stability of Steady Fronts and the Adjoint Method: Nonmodal Frontal Waves  

Science Conference Proceedings (OSTI)

The adjoint method for finding optimal or singular modes is employed for studying the finite time stability of steady, tw0-dimensional atmospheric fronts as represented by the uniform potential vorticity semigeostrophic model.

Alain Joly

1995-09-01T23:59:59.000Z

173

Numerical Modeling of Meander and Eddy Formation in the Azores Current Frontal Zone  

Science Conference Proceedings (OSTI)

Numerical experiments with an 11-level primitive equation, finite-difference model in a periodic channel are performed to analyze the properties of unstable finite-amplitude disturbances in an idealized Azores Current. Release of available ...

Jürgen Kielmann; Rolf H. Käse

1987-04-01T23:59:59.000Z

174

Large-Eddy Simulation of Post-Cold-Frontal Continental Stratocumulus  

Science Conference Proceedings (OSTI)

Previous large-eddy simulations (LES) of stratocumulus-topped boundary layers have been exclusively set in marine environments. Boundary layer stratocumulus clouds are also prevalent over the continent but have not been simulated previously. A ...

David B. Mechem; Yefim L. Kogan; David M. Schultz

2010-12-01T23:59:59.000Z

175

Sensitivity of Warm-Frontal Processes to Cloud-Nucleating Aerosol Concentrations  

Science Conference Proceedings (OSTI)

An extratropical cyclone that crossed the United States on 9–11 April 2009 was successfully simulated at high resolution (3-km horizontal grid spacing) using the Colorado State University Regional Atmospheric Modeling System. The sensitivity of ...

Adele L. Igel; Susan C. van den Heever; Catherine M. Naud; Stephen M. Saleeby; Derek J. Posselt

2013-06-01T23:59:59.000Z

176

In Situ Observations of Kelvin-Helmholtz Waves along a Frontal Inversion  

Science Conference Proceedings (OSTI)

An unusual set of observations of amplifying Kelvin-Helmholtz waves along a New England coastal front inversion is presented and compared to linear theory. The waves were observed by instrumented aircraft traversing the coastal front at various ...

John W. Nielsen

1992-03-01T23:59:59.000Z

177

A Climatology of Nocturnal Warming Events Associated with Cold-Frontal Passages in Oklahoma  

Science Conference Proceedings (OSTI)

A sudden increase in temperature during the nighttime hours accompanies the passages of some cold fronts. In some cold front–associated warming events, the temperature can rise by as much as 10°C and can last from a few minutes to several hours. ...

Anita Nallapareddy; Alan Shapiro; Jonathan J. Gourley

2011-10-01T23:59:59.000Z

178

Quasigeostrophic Forecasting and Physical Processes of Iceland-Faroe Frontal Variability  

Science Conference Proceedings (OSTI)

Using a hydrocast survey of the Iceland-Faroe Front (IFF) from October 1992, quasigeostrophic forecasts are studied to validate their efficacy and to diagnose the physical processes involved in the rapid growth of a cold tongue intrusion. ...

Arthur J. Miller; Pierre-Marie Poulain; Alex Warn-Varnas; Hernan G. Arango; Allan R. Robinson; Wayne G. Leslie

1995-06-01T23:59:59.000Z

179

The Influence of Mesoscale Humidity and Evapotranspiration Fields on a Model Forecast of a Cold-Frontal Squall Line  

Science Conference Proceedings (OSTI)

Satellite imagery and rain gauge data are combined to create mesoscale detail in the initial states of relative humidity (RH) and surface moisture availability (M) for a mesoscale model simulation. The most profound impact of inserting the ...

Steven E. Koch; Ahmet Aksakal; Jeffery T. McQueen

1997-03-01T23:59:59.000Z

180

Near-Surface Frontal Zone Trapping and Deep Upward Propagation of Internal Wave Energy in the Japan/East Sea  

Science Conference Proceedings (OSTI)

The full-depth current structure in the Japan/East Sea was investigated using direct velocity measurements performed with lowered and shipboard acoustic current Doppler profilers. Rotary spectral analysis was used to investigate the three-...

Andrey Y. Shcherbina; Lynne D. Talley; Eric Firing; Peter Hacker

2003-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

The Subpolar Front of the Japan/East Sea. Part II: Inverse Method for Determining the Frontal Vertical Circulation  

Science Conference Proceedings (OSTI)

An inverse method for inferring vertical velocities from high-resolution hydrographic/velocity surveys is formulated and applied to observations collected at the subpolar front of the Japan/East Sea (JES) taken during several cold-air outbreaks. ...

Leif N. Thomas; Craig M. Lee; Yutaka Yoshikawa

2010-01-01T23:59:59.000Z

182

Three-Dimensional Structure and Temporal Evolution of Submesoscale Thermohaline Intrusions in the North Pacific Subtropical Frontal Zone  

Science Conference Proceedings (OSTI)

Four instances of persistent intrusive deformation of the North Pacific Subtropical Front were tagged individually by a Lagrangian float and tracked for several days. Each feature was mapped in three dimensions using repeat towed observations ...

A. Y. Shcherbina; M. C. Gregg; M. H. Alford; R. R. Harcourt

2010-08-01T23:59:59.000Z

183

A Comparison between the Hoskins-Bretherton Model of Frontogenesis and the Analysis of an Intense Surface Frontal Zone  

Science Conference Proceedings (OSTI)

The Hoskins-Bretherton model of frontogenesis employed here represents the counterpart of the two-dimensional Eady problem expressed in geostrophic coordinate space. The fundamental characteristics of the model solution are shown to be derivable ...

William Blumen

1980-01-01T23:59:59.000Z

184

Pre- and Post-Sea-Breeze Frontal Lines—A Meso-?-Scale Analysis over South Israel  

Science Conference Proceedings (OSTI)

A meso-?-scale observational analysis of the fine surface structure of the sea-breeze fronts (SBF) over the coast of southern Israel is presented. Objective criteria for the SBF passage are derived based on wind speed and direction, temperature, ...

P. Alpert; M. Rabinovich-Hadar

2003-12-01T23:59:59.000Z

185

Distribution and Modification of North Pacific Intermediate Water around the Subarctic Frontal Zone East of 150°E  

Science Conference Proceedings (OSTI)

Modification and distribution of North Pacific Intermediate Water (NPIW) in the area north of 30°N and east of 150°E are discussed based on an isopycnal particle tracking experiment with the velocity field estimated from a ?-spiral inverse method ...

Masachika Masujima; Ichiro Yasuda

2009-06-01T23:59:59.000Z

186

The Life Cycle of an Extratropical Marine Cyclone. Part I: Frontal-Cyclone Evolution and Thermodynamic Air-Sea Interaction  

Science Conference Proceedings (OSTI)

The Experiment on Rapidly Intensifying Cyclones over the Atlantic was carried out over the western North Atlantic Ocean to provide temporally continuous comprehensive datasets from which to document the life cycle of extratropical marine ...

Paul J. Neiman; M. A. Shapiro

1993-08-01T23:59:59.000Z

187

A Multiscale Observational Case Study of a Pacific Atmospheric River Exhibiting Tropical–Extratropical Connections and a Mesoscale Frontal Wave  

Science Conference Proceedings (OSTI)

A case study is presented of an atmospheric river (AR) that produced heavy precipitation in the U.S. Pacific Northwest during March 2005. The study documents several key ingredients from the planetary scale to the mesoscale that contributed to the ...

F. Martin Ralph; Paul J. Neiman; George N. Kiladis; Klaus Weickmann; David W. Reynolds

2011-04-01T23:59:59.000Z

188

Evidence of Cross-Frontal Exchange Processes in the Gulf Stream Based on Isopycnal RAFOS Float Data  

Science Conference Proceedings (OSTI)

A unique set of Lagrangian observations has recently been collected in the Gulf Stream using the newly developed isopycnal RAFOS float. Between January, 1984 and October, 1985, thirty-seven of these drifters were launched in the main thermocline ...

A. S. Bower; T. Rossby

1989-09-01T23:59:59.000Z

189

Estimation of the Sea-State Bias in Radar Altimeter Geosat Data from Examination of Frontal Systems  

Science Conference Proceedings (OSTI)

The sea-state bias is the deviation of the sea surface height as seen by a satellite altimeter due to differential scattering by the crest and troughs of waves and to oversimplification of the radar waveform algorithms that calculate this height. ...

J. F. Minster; D. Jourdan; Ch Boissier; P. Midol-Monnet

1992-04-01T23:59:59.000Z

190

NAM Model Forecasts of Warm-Season Quasi-Stationary Frontal Environments in the Central United States  

Science Conference Proceedings (OSTI)

Using a composite procedure, North American Mesoscale Model (NAM) forecast and observed environments associated with zonally oriented, quasi-stationary surface fronts for 64 cases during July–August 2006–08 were examined for a large region ...

Shih-Yu Wang; Adam J. Clark

2010-08-01T23:59:59.000Z

191

Nonclassical Cold-Frontal Structure Caused by Dry Subcloud Air in Northern Utah during the Intermountain Precipitation Experiment (IPEX)  

Science Conference Proceedings (OSTI)

The purpose of the Intermountain Precipitation Experiment (IPEX) is to improve understanding of precipitating systems in the Intermountain West. Instrumentation deployed during the field phase of IPEX sampled a strong cold front and associated ...

David M. Schultz; Robert J. Trapp

2003-10-01T23:59:59.000Z

192

Sharp Frontal Interfaces in the Near-Surface Layer of the Ocean in the Western Equatorial Pacific Warm Pool  

Science Conference Proceedings (OSTI)

During the TOGA COARE rich horizontal temperature and salinity variability of the near-surface layer of the ocean in the western Pacific warm pool was observed. High-resolution measurements were made by probes mounted on the bow of the vessel in ...

Alexander Soloviev; Roger Lukas

1997-06-01T23:59:59.000Z

193

Ocean Frontal Effects on the Vertical Development of Clouds over the Western North Pacific: In Situ and Satellite Observations  

Science Conference Proceedings (OSTI)

A suite of shipboard and satellite observations are analyzed and synthesized to investigate the three-dimensional structure of clouds and influences from sea surface temperature fronts over the western North Pacific. Sharp transitions are ...

Hiroki Tokinaga; Youichi Tanimoto; Shang-Ping Xie; Takeaki Sampe; Hiroyuki Tomita; Hiroshi Ichikawa

2009-08-01T23:59:59.000Z

194

The Structure and Evolution of a Continental Winter Cyclone. Part II: Frontal Forcing of an Extreme Snow Event  

Science Conference Proceedings (OSTI)

The production of a narrow, heavy, occasionally convective snowband that fell within a modest surface cyclone on 19 January 1995 is examined using gridded model output from a successful numerical simulation performed using the University of ...

Jonathan E. Martin

1998-02-01T23:59:59.000Z

195

The Influence of Planetary Boundary Layer Physics on Frontal Structure in the Hoskins-Bretherton Horizontal Shear Model  

Science Conference Proceedings (OSTI)

A series of numerical experiments with the Hoskins-Bretherton horizontal shear model of frontogenesis in an, amplifying, two-dimensional baroclinic wave is performed. The analytic solutions from the Boussinesq, semi-geostrophic model provide ...

Daniel Keyser; Richard A. Anthes

1982-08-01T23:59:59.000Z

196

Design of a four rotor unmanned aerial vehicle capable of sustaining zero-roll and zero-pitch flight using vector thrusting  

E-Print Network (OSTI)

In recent decades, remote controlled airplanes and helicopters equipped with video cameras have been used by the movie industry, photographers, and for surveillance. The military deploys these unmanned aerial vehicles ...

Hilton, Danny Charles

2005-01-01T23:59:59.000Z

197

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

198

GEOLOGY, May 2009 387 Potential field data along the Texas portion of the Gulf of Mexico  

E-Print Network (OSTI)

GEOLOGY, May 2009 387 ABSTRACT Potential field data along the Texas portion of the Gulf of Mexico formed during the opening of the Gulf of Mexico, differs in origin from the transform boundary OF THE GULF OF MEXICO Breakup of Pangea often exploited the suture between Laurasia and Gondwana (Ouachita

Stern, Robert J.

199

Synoptic- and Frontal-Scale Influences on Tropical Transition Events in the Atlantic Basin. Part I: A Six-Case Survey  

Science Conference Proceedings (OSTI)

The process by which a baroclinic, vertically sheared, extratropical cyclone is transformed into a warm-core, vertically stacked tropical cyclone is known as tropical transition. Six recent tropical transitions of strong extratropical precursors ...

Andrew L. Hulme; Jonathan E. Martin

2009-11-01T23:59:59.000Z

200

Significance of a Midlatitude SST Frontal Zone in the Formation of a Storm Track and an Eddy-Driven Westerly Jet  

Science Conference Proceedings (OSTI)

In a set of idealized “aquaplanet” experiments with an atmospheric general circulation model to which zonally uniform sea surface temperature (SST) is prescribed globally as the lower boundary condition, an assessment is made of the potential ...

Takeaki Sampe; Hisashi Nakamura; Atsushi Goto; Wataru Ohfuchi

2010-04-01T23:59:59.000Z

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


201

The Evolution of Lee-Wave–Rotor Activity in the Lee of Pike’s Peak under the Influence of a Cold Frontal Passage: Implications for Aircraft Safety  

Science Conference Proceedings (OSTI)

A lee-wave–rotor system interacting with an approaching cold front in the lee of Pike’s Peak near Colorado Springs, Colorado, on 1 April 1997 is studied observationally and numerically. Dynamical effects associated with the approaching cold front ...

Lisa S. Darby; Gregory S. Poulos

2006-10-01T23:59:59.000Z

202

Microphysical Processes and Synergistic Interaction between Frontal and Orographic Forcing of Precipitation during the 13 December 2001 IMPROVE-2 Event over the Oregon Cascades  

Science Conference Proceedings (OSTI)

On 13–14 December 2001 a vigorous cyclonic storm passed over the Pacific Northwest, producing heavy orographic precipitation over the Cascade Mountains. This storm was one of several studied during the second field phase of the Improvement of ...

Christopher P. Woods; Mark T. Stoelinga; John D. Locatelli; Peter V. Hobbs

2005-10-01T23:59:59.000Z

203

The nature of habits in the nonhuman primate : the formation of sequences of eye movements and neural activity in the frontal eye field  

E-Print Network (OSTI)

The nature of habits, their formation, expression, and underlying causes have been pondered for centuries. Early definitions, still in use today, posited that habits are actions associated with outcomes that, when repeated, ...

Desrochers, Theresa M

2011-01-01T23:59:59.000Z

204

Partial Spline Models for the Inclusion of Tropopause and Frontal Boundary Information in Otherwise Smooth Two- and Three-Dimensional Objective Analysis  

Science Conference Proceedings (OSTI)

A new method, based on partial splint models, is developed for including specified discontinuities in otherwise smooth two- and three-dimensional objective analyses. The method is appropriate for including tropopause height information in two- ...

Jyh-Jen Shiau; Grace Wahba; Donald R. Johnson

1986-12-01T23:59:59.000Z

205

Interannual Variability of the Kuroshio Frontal Structure along Its Western Boundary in the North Pacific Ocean Associated with the 1982 ENSO Event  

Science Conference Proceedings (OSTI)

The vertically averaged temperature (Tav) over the upper 200 m of ocean in the western boundary of the North Pacific is used to detect changes in the strength and path of the Kuroshio Front along the western boundary from Luzon (18°N) to Honshu (...

Youhai He; Warren B. White

1987-09-01T23:59:59.000Z

206

Architectural Design and Support for Knowledge Sharing Across Heterogeneous MAST systems  

E-Print Network (OSTI)

disparate and somewhat esoteric sensor suites. Our technical approach involves the following major thrust

207

Space System Architecture  

E-Print Network (OSTI)

Final Report of SSPARC: the Space Systems, Policy, and Architecture Research Consortium (Thrust II and III)

McManus, Dr. Hugh

208

Effects of working memory demand on neural mechanisms of motor response selection and control  

Science Conference Proceedings (OSTI)

Inhibitory control commonly recruits a number of frontal regions: pre-supplementary motor area pre-SMA, frontal eye fields FEFs, and right-lateralized posterior inferior frontal gyrus IFG, dorsal anterior insula DAI, dorsolateral prefrontal cortex DLPFC, ...

Anita D. Barber; Brian S. Caffo; James J. Pekar; Stewart H. Mostofsky

2013-08-01T23:59:59.000Z

209

Room Air Conditioners | Department of Energy  

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

you need to mount the air conditioner at the narrow end of a long room, then look for a fan control known as "Power Thrust" or "Super Thrust" that sends the cooled air farther...

210

Public Rotor Topical Report.PDF  

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

the thrust from a ramjet thrust module into shaft torque, which in turn can drive a generator to provide electricity of shaft power for a mechanical drive application. This...

211

Creating Supersaturated Al-Sc-Zr Coatings with Additive Friction Stir ...  

Science Conference Proceedings (OSTI)

Proceedings Inclusion? Definite: A CD-only volume ... Additive Manufacturing of Materials – Key Thrust Area of ORNL's Manufacturing Demonstration Facility.

212

6 Sex and Power John Berger writes  

E-Print Network (OSTI)

. The thrust of Berger's argument is that the artistic nude is no different from the soft porn nude, existing

Robinson, John A.

213

DOE/NNSA  

Science Conference Proceedings (OSTI)

... Kansas City Plant transformation strategic thrust areas: • Reduce oversight ... Statistics QMResults ... power: types, derived types, built-in data types, ...

2013-02-28T23:59:59.000Z

214

Study of Vehicle Front Structure Crashworthiness Based on Pole Impact with Different Position  

Science Conference Proceedings (OSTI)

Because of occupant injury severity in frontal pole impact, this paper conducted a computer simulation study on the frontal pole impact of passenger car. Three types of frontal pole impact FE analysis models were developed according to different impact ... Keywords: Frontal pole impact, Impact position, Vehicle Structure Deformation, Crashworthiness

Qihui Li, Jikuang Yang

2013-01-01T23:59:59.000Z

215

The Mesoscale and Microscale Structure and Organization of Clouds and Precipitation in Midlatitude Cyclones. IX: Some Effects of Orography on Rainbands  

Science Conference Proceedings (OSTI)

The effects of orography on the mesoscale structures and precipitation processes in warm-frontal, warm-sector, wide cold-frontal, narrow cold-frontal and post-frontal rainbands in four Pacific cyclones are described. The rainbands were tracked ...

David B. Parsons; Pete V. Hobbs

1983-08-01T23:59:59.000Z

216

Geothermal resource assessment for the state of Texas: status of progress, November 1980. Final report  

DOE Green Energy (OSTI)

Data pertaining to wells and thermal aquifers and data interpretation methods are presented. Findings from a program of field measurements of water temperatures (mainly in South-Central Texas) and an assessment of hydrologic properties of three Cretaceous aquifers (in North-Central Texas) are included. Landsat lineaments and their pertinance to the localization of low-temperature geothermal resources are emphasized. Lineament data were compared to structural and stratigraphic features along the Balcones/Ouachita trend in Central Texas to test for correlations. (MHR)

Woodruff, C.M. Jr.; Caran, S.C.; Gever, C.; Henry, C.D.; Macpherson, G.L.; McBride, M.W.

1982-03-01T23:59:59.000Z

217

Heat-flow reconnaissance of the Gulf Coastal Plain  

DOE Green Energy (OSTI)

Most of the 46 new values of heat flow determined for the Gulf Coastal Plain are in the low to normal range, but heat-flow values averaging 1.8 heat-flow unit (HFU) were obtained in Claiborne, Ouachita, and Union parishes, Louisiana. Moreover, a zone of relatively high heat-flow values and steep thermal gradients (35 to 46/sup 0/C/km) extends from northern Louisiana into southwestern Mississippi. Also near Pensacola, Florida, temperatures of 50/sup 0/C at 1-km depth have been extrapolated from thermal gradients. Future development of low-grade geothermal resources may be warranted in these areas.

Smith, D.L.; Shannon, S.S. Jr.

1982-04-01T23:59:59.000Z

218

Regional tectonics of Myanmar (Burma) and adjacent areas  

SciTech Connect

Analysis of 38 contiguous Landsat Multispectral Scanner scenes acquired over Myanmar (Burma) reveals numerous large-scale features associated with margins of the Burman plate, previously unidentified northeast-southwest-trending discontinuities, important extensions of previously mapped fault trends, and numerous structural features that appear favorable for petroleum exploration. A mosaic of these scenes at 1:1,000,000 scale shows a large number of tectonic elements and their spatial relationships. Within the area of investigation are portions of the Indian, Burman, Lhasa, and Shan-Thai plates, and perhaps other, smaller plates. The Himalayan front and Indo-Burman Ranges manifest effects of current and recently past plate movement. The complexity of the kinematic history accounts for the diversity of structural features in the area. The last major event in this long and violent saga, which began in middle Miocene (approximately 11 Ma) time and continues to the present, is the recent change from a collisional to a right-lateral strike-slip transform margin between the Indian and Burman plates. The complexity of the structures visible is the product of multiple plate collisions, rotation of the Indian plate and parts of the Asian plate, and long-continued convergence that changed velocity and direction tbrough time. The most obvious evidence of this complexity, which is immediately apparent on geologic maps or the Landsat mosaic of the region, is the almost right-angle relationship of the folds of the Indo-Burman Ranges and the frontal thrusts and suture zones of the Himalaya. These two sets of compressive features imply maximum compressive stress axes that lie at right angles to each other. The implications are either that the orientation of the stress field changes rapidly over a short distance or that the stress field has changed through time. Both occurrences seem to be true.

Everett, J.R.; Russell, O.R.; Staskowski, R.J.; Loyd, S.P.; Tabbutt, V.M. (Earth Satellite Corp., Chevy Chase, MD (USA)); Dolan, Stein, A. (Dolan and Associates, Richmond (England))

1990-05-01T23:59:59.000Z

219

Evaluation of geologic controls on geothermal anomalies in the Arkoma Basin, Oklahoma  

Science Conference Proceedings (OSTI)

Vitrinite-reflectance techniques were used to determine if there is a relationship between present geothermal gradient and coal rank in the Arkoma Basin. Three coal seams from high geothermal-gradient areas were compared with the same coal seams, respectively, from low geothermal-gradient areas. Samples were obtained from three core holes that were drilled in the high geothermal-gradient areas in Pittsburg and Haskell Counties, and three core holes that were drilled in the low geothermal-gradient areas in Latimer and Muskogee Counties. Nine additional coal samples were collected from active coal mines and one from an outcrop to supplement the core samples. The vitrinite-reflectance data indicates the present geothermal gradient did not produce the coal rank in the Arkoma Basin of Oklahoma. The coal rank is believed to have developed during the late Paleozoic, possibly in connection with the Ouachita orogeny. The coal isocarb maps suggest that the present geothermal-gradient pattern reflects the paleogeothermal gradient that produced the coal rank. Perhaps the intense folding and faulting associated with the Ouachita orogeny combined to transmit heat from the basement along an east-west thermal-anomaly zone through Haskell and Pittsburg Counties, Oklahoma. 60 refs., 16 figs., 3 tabs.

Cardott, B.J.; Hemish, L.A.; Johnson, C.R.; Luza, K.V.

1985-06-01T23:59:59.000Z

220

Recent results from the Spacecraft Fabrication and Test MODIL  

SciTech Connect

The Spacecraft Fabrication and Test Manufacturing Operations Development and Integration Laboratory (SF&T MODIL) is working with SDIO program offices and contractors to reduce schedule and budget risks for SDIO systems as they go into production. The concurrent engineering thrust has identified potential high payoff areas. A materials and structures demonstration project has been successfully completed in partial automated closing of matched metal molds for a continuous fiber composite. In addition to excellent accuracy, the parts demonstrated excellent predictability and repeatability of physical properties. The cryocooler thrust successfully demonstrated and inserted precision technologies into a generic cryocooler part. The precision technologies thrust outlined two potentially high payoff areas in precision alignment and miniature rocket thrust measurement. The Producible Technology Working Group (PTWG) efforts identified the need for a test and assembly thrust. Due to funding limitations, continuing efforts are limited to the cryocooler thrust.

Saito, T.T.

1993-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Diabatically Driven Discrete Propagation of Surface Fronts: A Numerical Analysis  

Science Conference Proceedings (OSTI)

Discrete frontal propagation has been identified as a process whereby a surface front discontinuously moves forward, without evidence of frontal passage across a mesoscale region. Numerical simulations are employed to examine the upper-level ...

George H. Bryan; J. Michael Fritsch

2000-07-01T23:59:59.000Z

222

The Generation of Turbulence below Midlevel Cloud Bases: The Effect of Cooling due to Sublimation of Snow  

Science Conference Proceedings (OSTI)

In the author’s experience as a forecaster, commercial aircraft sometimes report turbulence beneath midlevel clouds that extend above upper frontal zones. Turbulence caused by Kelvin–Helmholtz instability occurs in upper frontal zones with strong ...

Atsushi Kudo

2013-04-01T23:59:59.000Z

223

A Proposed Method of Surface Map Analysis  

Science Conference Proceedings (OSTI)

Present surface frontal analyses suffer from the defect that frontal positions are typically not collocated with zones of intense temperature contrast. Further, individuals typically do not agree as to the existence, type, and location of fronts.

Frederick Sanders

1999-06-01T23:59:59.000Z

224

Linear Stability Models of Shelfbreak Fronts  

Science Conference Proceedings (OSTI)

The stability of inviscid frontally trapped waves along a shelfbreak is examined to determine whether frontal instabilities may contribute to the alongfront variability frequently observed. Three different basic states with increasingly complex ...

Glen Gawarkiewicz

1991-04-01T23:59:59.000Z

225

Postfrontal Airmass Modification  

Science Conference Proceedings (OSTI)

The northeastern United States is subject to relatively frequent passages of frontal systems during the growing season. After a frontal passage, the newly arrived air mass is gradually modified by the underlying, mostly vegetated landscape. For ...

Jeffrey M. Freedman; David R. Fitzjarrald

2001-08-01T23:59:59.000Z

226

Pulsed hydrojet  

DOE Patents (OSTI)

An underwater pulsed hydrojet propulsion system is provided for accelerating and propelling a projectile or other vessel. A reactant, such as lithium, is fluidized and injected into a water volume. The resulting reaction produces an energy density in a time effective to form a steam pocket. Thrust flaps or baffles direct the pressure from the steam pocket toward an exit nozzle for accelerating a water volume to create thrust. A control system regulates the dispersion of reactant to control thrust characteristics.

Bohachevsky, I.O.; Torrey, M.D.

1986-06-10T23:59:59.000Z

227

Structural geology and tectonic implications of a part of the northern Stillwater Range, Nevada  

Science Conference Proceedings (OSTI)

The east flank of the Stillwater Range adjacent to the Dixie Valley geothermal area near Fallon, Nevada, hosts one of the best exposures of Mesozoic thrust faults in the Basin and Range province. The rangefront comprises four imbricate lithologic packages. The Triassic Star Peak Group sits structurally lowest beneath Triassic phyllite of the Fencemaker-B allochthon. Bedded quartz arenite of the Jurassic Boyer Ranch Formation lies above the phyllite along the Boyer thrust. Rocks of the Humboldt Igneous Complex sit structurally highest in brittle fault contact with both the arenite and phyllite. The Fenoemaker thrust is a major Jurassic structure in west-central Nevada which places Triassic basinal strata northeastward over shelf carbonates of the Star Peak Group, which depositionally overlie the Golconda allochthon. Locally, the Fencemaker thrust lies within a high strain zone characterized by mylonitic marble, phlogopite-bearing calcareous argillite schist, boudinaged siliciclastics, and phyllonite. Consistently southeast-dipping penetrative foliations and down-dip stretching lineations in these Triassic metasedimentary rocks are, however, inconsistent with northeast directed thrusting. This suggests that northwest vergent thrusting also occurred here, possibly along the Willow Creek thrust. In contrast to the Fencemaker thrust, the Boyer thrust is characterized by close folds in the hanging wall, a narrow zone of fault gouge, and crenulation of footwall foliations, indicating a less ductile regime. East dipping Tertiary extensional faults expose these thrusts along the Stillwater rangefront and displace the thrust sheets downdip beneath Dixie Valley. The geometry of these thrust sheets in the subsurface is critical to the production of geothermal wells in the area.

Plank, G.L. [Univ. of Nevada, Reno, NV (United States)

1996-06-01T23:59:59.000Z

228

Next Generation Nanosatellite Systems: Mechanical Analysis and Test.  

E-Print Network (OSTI)

??The Canadian Nanosatellite Advanced Propulsion System is the second generation cold-gas propulsion system. Its purpose is to provide the millinewton thrust required for formation control… (more)

Ligori, Michael C.

2011-01-01T23:59:59.000Z

229

Ultrasonic-assisted Microforming of Metallic Materials  

Science Conference Proceedings (OSTI)

Die Forging Design of the Thrust Shaft for Marine Diesel Engine · Effect of Multiple Cold-rolling on the Mechanical Properties and Microstructureof an ...

230

Shaping and Forming of High Strength Steel, Titanium, and Light ...  

Science Conference Proceedings (OSTI)

Die Forging Design of the Thrust Shaft for Marine Diesel Engine · Effect of Multiple Cold-rolling on the Mechanical Properties and Microstructureof an ...

231

Slide 1  

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

gas. * Potential research thrusts may focus on improving processing efficiency to utilize shale gas as a low cost chemical feed stock and intermediate; identifying industrial...

232

State-of-the-art of drilling thrusters  

DOE Green Energy (OSTI)

Several different concepts for applying force or thrust to drill bits are identified. Recommendations for further studies of drilling thrusters are made.

Dareing, D.W.

1980-01-01T23:59:59.000Z

233

Call For Papers  

Science Conference Proceedings (OSTI)

The CMS allows anyone with a World Wide Web browser to electronically submit an abstract. ... Email: chichibu@bk.tsukuba.ac.jp. The major thrust areas of the ...

234

Sandia National Labs: PCNSC: Research: Optical Sciences  

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

Optical Sciences The focus of the Optical Sciences thrust is to understand and exploit the elegant interaction between light and matter. Our research portfolio encompasses the...

235

Sandia National Labs: Physical, Chemical and Nano Sciences Center...  

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

Vision & MissionValues Strengths & Capabilities Center Thrusts Resources Organization Chart Departments News Partnering Research Center 1100 Vision & MissionValues Strengths &...

236

Sandia National Labs: PCNSC: Research: Compound Semiconductor...  

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

Compound Semiconductor Science and Technology Thrust The Physical, Chemical, and Nano Sciences Center's vision for Compound Semiconductors is to develop the science of compound...

237

Optimization of the Fatigue Properties of Inconel Alloy 625  

Science Conference Proceedings (OSTI)

systems, thrust reverser assemblies and afterburners are examples of gas turbine ... established specifications to influence this type of alloy's performance within ...

238

A Design Study of Single-Rotor Turbomachinery Cycles.  

E-Print Network (OSTI)

??Gas turbine engines provide thrust for aircraft engines and supply shaft power for various applications. They consist of three main components. That is, a compressor… (more)

Thiagarajan, Manoharan

2004-01-01T23:59:59.000Z

239

Improvement of the performance of a turbo-ramjet engine for UAV and missile applications .  

E-Print Network (OSTI)

??An existing turbo-ramjet engine was modified in order to increase the produced thrust and sustain combustion at increased freejet Mach numbers. The engine's afterburner fuel… (more)

Krikellas, Dimitrios

2003-01-01T23:59:59.000Z

240

Innovations in Manufacturing  

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

> Thrust Areas Research Carbon Fiber and Composites Innovation in Carbon Fiber Production Oak Ridge National Laboratory's Low-Cost Carbon Fiber work is focused on reducing...

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

The National Nuclear Security Administration's B61 Spin Rocket...  

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

essentially identical, produce thrust to arm thz weapon. In Deceinber 2001, the National Nuclear Security Administration (NNSA) received Nuclear Weapons Council Standing and...

242

Investigation of performance improvements including application of inlet guide vanes to a cross-flow fan .  

E-Print Network (OSTI)

??The inherent characteristics of a cross-flow fan allowing for easy thrust vectoring as well as potential airfoil boundary layer control make it an attractive propulsive… (more)

Cordero, Samuel F.

2009-01-01T23:59:59.000Z

243

PROCEEDINGS OF 1976 SUMMER WORKSHOP ON AN ENERGY EXTENSION SERVICE  

E-Print Network (OSTI)

PROGRAM THRUSTS: 1. WASTE ENERGY REDUCTION (REDUCE ENERGYtypes that consume and waste energy during the long periodscycle energy systems, waste-to-energy conversion systems,

Authors, Various

2010-01-01T23:59:59.000Z

244

NERSC/DOE BES Requirements Workshop Worksheet - Normand Modine  

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

Modine BES Requirements Worksheet 1.1. Project Information - Center for Integrated Nanotechnology (CINT) - Theory and Simulation Thrust Document Prepared By Normand Modine Project...

245

NETL: News Release - DOE Selects 9 New Projects to Enhance Future...  

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

concept that uses the supersonic thrust of ramjets to spin an electric power generator; Siemens Westinghouse Power Corporation, Pittsburgh, PA, to study a way to capture...

246

Three dimensional carbon nanotube based photovoltaics .  

E-Print Network (OSTI)

??Photovoltaic (PV) cells with a three dimensional (3D) morphology are an exciting new research thrust with promise to create cheaper, more efficient solar cells by… (more)

Flicker, Jack David

2011-01-01T23:59:59.000Z

247

Additive Manufacturing of Materials - Programmaster.org  

Science Conference Proceedings (OSTI)

Presentation Title, Additive Manufacturing of Materials – Key Thrust Area of ORNL's ... Lubricants in Deposition and Machining of Wire and Arc Additive ...

248

Coverage impacts biomass composition, conversion to ethanol yields and microbial communities during storage.  

E-Print Network (OSTI)

??Increased mandates for the production of transportation fuels from renewable resources have thrust the conversion of lignocellulosic biomass, e.g., energy crops and agricultural residues, to… (more)

Rigdon, Anne R.

2013-01-01T23:59:59.000Z

249

Microsoft Word - Draft.doc  

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

4 4 2.1 Advanced Tokamak Thrust.............................................. 24 2.2 ITER and Burning Plasma Support Thrust ...................... 29 2.3 Transport .......................................................................... 34 2.4 Plasma Boundary ............................................................. 43 2.5 Macroscopic Stability ...................................................... 53 2.6 Wave-Plasma Physics ...................................................... 58 2.6.1 ICRF..................................................................... 58 2.6.2 LHRF ................................................................... 63 3. Operations ............................................................................. 65

250

JOURNALOF GEOPHYSICALRESEARCH,VOL. 88, NO. Bll, PAGES9407-9418, NOVEMBER10, 1983 COLLISION, ROTATION, AND THE INITIATION OF SUBDUCTION  

E-Print Network (OSTI)

, beginning in west- trench changes laterally from a zone of no active ern New Guinea (Irian Jaya) in early (western) zone of slices of northern Irian Jaya apparently have been thrusting produces a gentle (20) slope's Head re- by the presence of the Tolo thrust. Its outcrop is gion of Irian Jaya, providing the basis

McCaffrey, Robert

251

The plasma focus as a thruster  

E-Print Network (OSTI)

The need for low propellant weight, high efficiency propulsion systems is a glaring need for various space missions. This thesis presents the thrust modeling of the Dense Plasma Focus plasma motion phases. It also contrasts some of the engineering tradeoffs between the existing coaxial plasma thrusters and the Dense Plasma Focus. Modeling the thrust generated by the DPF started with seeing how far the working models for the MPD would take the DPF. The effect of pulsed compared to quasi-steady state operation is computed. There is no known experimental data regarding thrust measurements for any DPF, so the thrust is analytically calculated using experimental data for the TAMU DPF. The calculated thrust is slightly higher than the thrust predicted by the models. The developed model shows that the force generated by the DPF will produce a thrust roughly three times the thrust for the MPD for similar input currents and electrode geometry. For the TAMUDPF to compete with the MPD as a thruster, it will need to be able to fire roughly 75 more times a second than the MPD.

Hardy, Richard Lee

2004-12-01T23:59:59.000Z

252

Technology Challenges in Designing the Future Grid to Enable  

E-Print Network (OSTI)

Thrust Area Synthesis White Paper Power Systems Engineering Research Center Empowering Minds to Engineer, Arizona State University PSERC Publication 12-17 June 2012 #12;Information about this white paper, contact · the thrust area white papers on which this paper is based · a collection of broad analysis white papers

253

Performance optimization of gas turbine engine  

Science Conference Proceedings (OSTI)

Performance optimization of a gas turbine engine can be expressed in terms of minimizing fuel consumption while maintaining nominal thrust output, maximizing thrust for the same fuel consumption and minimizing turbine blade temperature. Additional control ... Keywords: Fuel control, Gas turbines, Genetic algorithms, Optimization, Temperature control

Valceres V. R. Silva; Wael Khatib; Peter J. Fleming

2005-08-01T23:59:59.000Z

254

PowerPoint Presentation  

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

project was authorized by the Flood Control Act approved 18 project was authorized by the Flood Control Act approved 18 August 1941 (Public No. 228, 77 th Congress, 1 st Session). Construction of the access road began in April 1946. Construction of Narrows Dam started in May 1947 and the structure was essentially completed by July 1950. Commercial operation began May 1950 on Units #1 and #2. Commercial operation began September 1969 on Unit #3. The Narrow Dam is located on the Little Missouri River, a tributary of the Ouachita River near Murfreesboro in Pike County, Arkansas. It is a multi-purpose project for flood and power generation. Maximum Pool 7,260 Acres Shoreline 134 Miles Type Concrete Gravity Crest Elevation 581 Feet,msl Spillway Type Concrete, Uncontrolled Spillway Crest Elevation 563 Feet,msl Number of Units

255

Step-by-Step Instructions  

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

Louisiana Louisiana based upon the simple prescriptive option of the 2012 IECC. It does not provide a guarantee for meeting the IECC. This guide is not designed to reflect the actual energy code, with amendments, if any, adopted in Louisiana and does not, therefore, provide a guarantee for meeting the state energy code. For details on the energy code adopted by Louisiana, including how it may differ from the IECC, please contact your local building code official. Additional copies of this guide are available on www.reca-codes.com. CLIMATE ZONE 3 Bienville Grant Sabine Bossier Jackson Tensas Caddo La Salle Union Caldwell Lincoln Vernon Catahoula Madison Webster Claiborne Morehouse West Carroll Concordia Natchitoches Winn De Soto Ouachita East Carroll Red River

256

Low-temperature thermal energy storage program annual operating plan  

DOE Green Energy (OSTI)

The LTTES program operating plans for FY 1978 are described in terms of general program objectives and the technical activities being implemented to achieve these objectives. The program structure provides emphasis on several principal thrusts; namely, seasonal thermal storage, daily/short-term thermal storage, and waste heat recovery and reuse. A work breakdown structure (WBS) organizes the efforts being carried out in-house or through subcontract within each thrust area. Fiscal data are summarized in respect to thrust area, individual efforts, and funding source.

Hoffman, H. W.; Eissenberg, D. M.

1979-01-01T23:59:59.000Z

257

NIST Manuscript Publication Search  

Science Conference Proceedings (OSTI)

... Knowing where to look will help the subjects being photographed orient themselves in such a way that they are frontal to the camera – thus ...

2013-03-26T23:59:59.000Z

258

Autism and attention deficit hyperactivity disorder: assessing attention and response control with the integrated visual and auditory continuous performance test.  

E-Print Network (OSTI)

1994). Can neuropsychologica tests help diagnose A D D / A Dproviding neuropsychological test administration. Assessingan exploration with frontal lobe tests. JAutism Dev Disord,

Corbett, Blythe A; Constantine, Laura J

2006-01-01T23:59:59.000Z

259

Propeller performance analysis using lifting line theory  

E-Print Network (OSTI)

Propellers are typically optimized to provide the maximum thrust for the minimum torque at a specific number of revolutions per minute (RPM) at a particular ship speed. This process allows ships to efficiently travel at ...

Flood, Kevin M. (Kevin Michael)

2009-01-01T23:59:59.000Z

260

Chemistry and Materials Science progress report, FY 1994. Revision 2  

Science Conference Proceedings (OSTI)

Thrust areas of the weapons-supporting research include surface science, fundamentals of the physics and processing of metals, energetic materials, etc. The laboratory directed R and D include director`s initiatives, individual projects, and transactinium science studies.

NONE

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Riding the dragon : entrepreneurship under market transition  

E-Print Network (OSTI)

This dissertation focuses on three of the most important questions in entrepreneurship study, namely venture financing, corporate strategy and firm performance. The main thrust of the dissertation is to elaborate the ...

Wang, Yanbo, Ph. D. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

262

SiC/SiC Composite Thruster for Upper Stage Liquid Rocket Engines  

Science Conference Proceedings (OSTI)

A SiC/SiC composite thrust chamber was made by the lamination of three axes braiding layers, and the Tyrano ZMI SiC fibers were used as reinforcements and

263

Emission spectroscopy for the study of electric propulsion plasmas  

E-Print Network (OSTI)

Typical electric propulsion devices rely on the acceleration of highly ionized plasmas to produce thrust at specific impulses unattainable with state-of-the-art chemical systems. This thesis examines the use of a miniaturized ...

Matlock, Taylor Scott

2009-01-01T23:59:59.000Z

264

CSG Strategic R&D Workshop Proceedings  

Science Conference Proceedings (OSTI)

The EPRI Customer Systems Group (CSG) held the CSG Strategic R&D Workshop to develop recommendations for future research directions. The resulting summaries of potential research thrusts appear in these proceedings.

1995-03-04T23:59:59.000Z

265

MULTI-PARTICLE CORRELATION OBSERVABLES IN HIGH ENERGY NUCLEUS-NUCLEUS COLLISIONS  

E-Print Network (OSTI)

results of an event-by-event analysis can be. Special "seen that event-by-event analysis of momentum thrust andThis is not an event-by-event analysis but just a selection

Stock, R.

2010-01-01T23:59:59.000Z

266

Removal of Heavy Metals from Water by Fly Ash from Coal and Steel ...  

Science Conference Proceedings (OSTI)

In this work, iron dust from steelmaking process and coal fly ahs are used as an alternative adsorbent ... iNEMI Environmental Thrust; History, Challenges, & Opportunities ... Phosphorus Flow Analysis for Food Production and Consumption.

267

Computational Challenges and Analysis under Increasingly Dynamic and Uncertain  

E-Print Network (OSTI)

Computational Challenges and Analysis under Increasingly Dynamic and Uncertain Electric Power Empowering Minds to Engineer the Future Electric Energy System #12;Thrust Area 5 White Paper Computational Challenges and Analysis Under Increasingly Dynamic and Uncertain Electric Power System Conditions Project

268

Continuity, stability and exchange : design transformations of/projections for a housing project in Lahore  

E-Print Network (OSTI)

The role of planner is something that post industrial society has thrust upon architects in the twentieth century. Whereas previously they were limited mostly to the design of singular special buildings for the environment, ...

Faruqi, Mahmood Ahmed

1989-01-01T23:59:59.000Z

269

Design of aircraft noise abatement approach procedures for near-term implementation  

E-Print Network (OSTI)

Advanced aircraft noise abatement approach procedures -- characterized by decelerating, continuous descent approaches using idle thrust, and enabled by flight guidance technologies such as GPS and FMS -- have been shown ...

Ho, Nhut Tan, 1974-

2005-01-01T23:59:59.000Z

270

Equilibrium systems : studies in masonry structure  

E-Print Network (OSTI)

This thesis presents new interactive computational analysis tools for masonry structures based on limit state analysis. Thrust lines are used to clearly visualize the forces within the masonry and to predict possible ...

Block, Philippe (Philippe Camille Vincent)

2005-01-01T23:59:59.000Z

271

Multi-criteria lifecycle evaluation of transportation fuels derived from biomass gasification  

E-Print Network (OSTI)

The development of a domestic biofuel industry has been a major policy thrust of the United States federal government in the first decade of the 21st century. Cellulosic biofuels have been identified as the primary candidate ...

Stark, Addison Killean

2010-01-01T23:59:59.000Z

272

Sandia National Labs: Physical, Chemical and Nano Sciences Center...  

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

and response to radiation exposure more important now than at any period during the Atomic Age. An important goal of this NNSA S&T thrust, therefore, is to provide this...

273

Piston  

SciTech Connect

A number of embodiments of a piston may have a shape that provides enhanced piston guidance. In such embodiments, the piston shape may include an axial profile that is configured to provide certain thrust load characteristics.

Donahue, Richard J. (Colgate, WI)

2009-03-24T23:59:59.000Z

274

Piston  

DOE Patents (OSTI)

A number of embodiments of a piston may have a shape that provides enhanced piston guidance. In such embodiments, the piston shape may include an axial profile that is configured to provide certain thrust load characteristics.

Donahue, Richard J. (Colgate, WI)

2007-11-13T23:59:59.000Z

275

Piston  

DOE Patents (OSTI)

A number of embodiments of a piston may have a shape that provides enhanced piston guidance. In such embodiments, the piston shape may include an axial profile that is configured to provide certain thrust load characteristics.

Donahue, Richard J. (Colgate, WI)

2009-02-24T23:59:59.000Z

276

Piston  

DOE Patents (OSTI)

A number of embodiments of a piston may have a shape that provides enhanced piston guidance. In such embodiments, the piston shape may include an axial profile that is configured to provide certain thrust load characteristics.

Donahue, Richard J. (Colgate, WI)

2007-12-04T23:59:59.000Z

277

Office of Science and Technology & International Year End Report - 2005  

E-Print Network (OSTI)

Bo Bodvarsson, Mark Peters, and Joe H. Payer ? RadionuclidePless, and J. Benjamin Chwirka BiOX-Based Solid RadionuclideMattigod (Co-Director), Radionuclide Getters Thrust Area

Bodvarsson, G.S.

2005-01-01T23:59:59.000Z

278

Simulation of spike stall inception in a radial vanted diffuser  

E-Print Network (OSTI)

In turbocharger application bleed air at impeller exit is typically used to seal bearing compartments and to balance axial thrust in the rotor. It was previously shown that this bleed air can have a significant impact on ...

Hill, Raymond Andrew, IV

2007-01-01T23:59:59.000Z

279

Propeller design optimization for tunnel bow thrusters in the bollard pull condition  

E-Print Network (OSTI)

Tunnel bow thrusters are often used by large ships to provide low-speed lateral maneuverability when docking. Required to provide high thrust while essentially at a standstill, the design point for these thrusters is the ...

Wilkins, James R., IV

2012-01-01T23:59:59.000Z

280

Electric and Hybrid Vehicle Program: Site Operator Program. Quarterly progress report, April--June 1995  

DOE Green Energy (OSTI)

This quarterly report details activities of the Department of Energy (DOE) Site Operator Program for the months of April, May, and June 1995. The 12 program participants, their geographic locations, and the principal thrusts of their efforts are provided.

Kiser, D.M.; Brown, H.L.

1995-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Design and control of an high maneuverability remotely operated vehicle with multi-degree of freedom thrusters  

E-Print Network (OSTI)

This research involves the design, manufacture, and testing of a small, < lm³, < 1Okg, low cost, unmanned submersible. High maneuverability in the ROV as achieved through a high thrust-to- mass ratio in all directions. One ...

Walker, Daniel G. (Daniel George)

2005-01-01T23:59:59.000Z

282

The design, fabrication and testing of micro-fabricated linear and planar colloid thruster arrays  

E-Print Network (OSTI)

New space applications such as orbital control of micro-satellites and precise interferometry have created a demand for high precision, low thrust efficient space engines. Electrospray propulsion is a serious candidate for ...

Velásquez García, Luis Fernando, 1976-

2004-01-01T23:59:59.000Z

283

Fabrication and characterization of porous metal emitters for electrospray applications  

E-Print Network (OSTI)

Electrospray thrusters provide small, precise thrust with high power efficiencies and variable specific impulses from less than 1000s to over 4000s. The miniaturization and clustering of many emitters together is essential ...

Legge, Robert S., Jr

2008-01-01T23:59:59.000Z

284

Analysis, Fabrication and Testing of a MEMS-based Micropropulsion System  

E-Print Network (OSTI)

Various trends in the spacecraft industry are driving the development of low-thrust propulsion systems. These may be needed for fine attitude control, or to reduce the mass of the propulsion system through the use of small ...

Bayt, Robert L.

285

Program to develop improved downhole drilling motors. Semiannual report  

DOE Green Energy (OSTI)

The following are described: the history of turbodrill development, positive displacement motor development, the theory of turbodrills, the theory of positive displacement motors, basic motor components, forces on thrust bearings, thrust bearing design, radial bearing design, rotary seal design, sealed lubrication system, lubricants, and project status. Included in appendices are materials on high-temperature lubricants and a progress report on the design of downhole motor seal, bearing, and lubrication test systems. (MHR)

Maurer, W.C.

1976-11-01T23:59:59.000Z

286

Hermatically sealed motor blower unit with stator inside hollow armature  

DOE Patents (OSTI)

13. A hermetically sealed motor blower unit comprising, in combination, a sealed housing having a thrust plate mounted therein and having a re-entrant wall forming a central cavity in said housing, a rotor within said housing, said rotor comprising an impeller, a hollow shaft embracing said cavity and a thrust collar adapted to cooperate with said thrust plate to support the axial thrust of said shaft, one or more journal bearings within said housing for supporting the radial load of said shaft and electric motor means for rotating said rotor, said motor means comprising a motor-stator located within said cavity and adapted to cooperate through a portion of said re-entrant wall with a motor-rotor mounted within said hollow shaft, the portion of said re-entrant wall located between said motor-stator and said motor-rotor being made relatively thin to reduce electrical losses, the bearing surfaces of said thrust plate, thrust collar and journal bearings being in communication with the discharge of said impeller, whereby fluid pumped by said impeller can flow directly to said bearing surfaces to lubricate them.

Donelian, Khatchik O. (New York, NY)

1976-01-20T23:59:59.000Z

287

Huygens relativity Galileo still spoke of objects as if they have a "proper place" in Nature (il suo luogo). He also identified  

E-Print Network (OSTI)

above, show up everywhere in hydrodynamics, and even in the design of numerical hydro methods. Basically the difference between two equal cars moving at 50 km/s hitting each other frontally, and a single car hitting is the change of velocity; therefore, the frontal collision produces the same effects as a car hitting a wall

Icke, Vincent

288

Wind-Driven Motion near a Shelf-Slope Front  

Science Conference Proceedings (OSTI)

A two-dimensional, two-layered frontal system is used to examine the wind-driven motion near a shelf-slope front. In the linear regime, the along-frontal current is characterized by barotropic perturbations. The front is dynamically passive and ...

Hsien Wang Ou

1984-06-01T23:59:59.000Z

289

Stratigraphic controls on lateral variations in the structural style of northeastern Brooks range, Arctic National Wildlife Refuge, Alaska  

Science Conference Proceedings (OSTI)

The structural style of the range-front region of the northeastern Brooks Range in Arctic National Wildlife Refuge (ANWR) is strongly controlled by (1) the existence of detachment horizons in both pre-Mississippian rocks and the unconformably overlying Mississippian to Lower Cretaceous cover sequence, and (2) lithology and structural competency of the pre-Mississippian rocks. These variables strongly influence lateral changes in structural style. The Brooks Range of northwestern ANWR is dominated by a series of narrow linear anticlinoria, whereas in northeastern ANWR the Brooks Range is characterized by only two broad and strongly arcuate anticlinoria. In both areas, the anticlinoria are controlled by the geometry of a duplex bounded by a floor thrust in pre-Mississippian rocks and a roof thrust in the Kayak Shale, near the base of the cover sequence. In the west, where the pre-Mississippian partially consists of structurally competent carbonates, each anticlinorium marks a single horse in the duplex. However, in the east, pre-Mississippian rocks are relatively incompetent and each anticlinorium is cored by multiple horses. In the west, shortening above the roof thrust is by detachment folding, except where the shale detachment horizon is depositionally absent. In contrast, in eastern ANWR shortening above the roof thrust is by major thrust duplication of the entire cover sequence, perhaps due to lithology and thickness changes within the detachment horizon. A Devonian batholith marks the boundary between the eastern and western structural provinces. The thrust-controlled range front of eastern ANWR extends north of the batholith, suggesting that the batholith itself may be underlain by a thrust fault.

Wallace, W.K.; Hanks, C.L.

1988-02-01T23:59:59.000Z

290

Idaho National Engineering and Environmental Laboratory institutional plan -- FY 2000--2004  

SciTech Connect

In this first institutional plan prepared by Bechtel BWXT Idaho, LLC, for the Idaho National Engineering and Environmental Laboratory, the INEEL will focus its efforts on three strategic thrusts: (1) Environmental Management stewardship for DOE-EM, (2) Nuclear reactor technology for DOE-Nuclear Energy (NE), and (3) Energy R and D, demonstration, and deployment (initial focus on biofuels and chemicals from biomass). The first strategic thrust focuses on meeting DOE-EMs environmental cleanup and long-term stewardship needs in a manner that is safe, cost-effective, science-based, and approved by key stakeholders. The science base at the INEEL will be further used to address a grand challenge for the INEEL and the DOE complex--the development of a fundamental scientific understanding of the migration of subsurface contaminants. The second strategic thrust is directed at DOE-NEs needs for safe, economical, waste-minimized, and proliferation-resistant nuclear technologies. As NE lead laboratories, the INEEL and ANL will pursue specific priorities. The third strategic thrust focuses on DOE's needs for clean, efficient, and renewable energy technology. As an initial effort, the INEEL will enhance its capability in biofuels, bioprocessing, and biochemicals. The content of this institutional plan is designed to meet basic DOE requirements for content and structure and reflect the key INEEL strategic thrusts. Updates to this institutional plan will offer additional content and resource refinements.

Enge, R.S.

1999-12-01T23:59:59.000Z

291

INEEL Institutional Plan - FY 2000-2004  

SciTech Connect

In this first Institutional Plan prepared by Bechtel BWXT Idaho, LLC, for the Idaho National Engineering and Environmental Laboratory, the INEEL will focus it's efforts on three strategic thrusts; (1) Environmental Management stewardship for DOE-EM, (2) Nuclear reactor technology for DOE-Nuclear Energy (NE), and (3) Energy R&D, demonstration, and deployment (initial focus on biofuels and chemical from biomass). The first strategic thrust focuses on meeting DOE-EM's environmental cleanup and long-term stewardship needs in a manner that is safe, cost-effective, science-based, and approved by key stakeholders. The science base at the INEEL will be further used to address a grand challenge for the INEEL and the DOE complex - the development of a fundamental scientific understanding of the migration of subsurface contaminants. The second strategic thrust is directed at DOE-NE's needs for safe, economical, waste-minimized, and proliferation-resistant nuclear technologies. As NE lead laboratories, the INEEL and ANL will pursue specific priorities. The third strategic thrust focuses on DOE's needs for clean, efficient, and renewable energy technology. As an initial effort, the INEEL will enhance its capability in biofuels, bioprocessing, and biochemicals. The content of this Institutional Plan is designed to meet basic DOE requirements for content and structure and reflect the key INEEL strategic thrusts. Updates to this Institutional Plan will offer additional content and resource refinements.

Enge, Ray Stevenson

1999-11-01T23:59:59.000Z

292

Stratigraphic controls on lateral variations in the structural style of northeastern Brooks Range, Arctic National Wildlife Refuge, Alaska  

Science Conference Proceedings (OSTI)

The structural style of the range-front region of the northeastern Brooks Range in Arctic National Wildlife Refuge (ANWR) is strongly controlled by (1) the existence of detachment horizons in both pre-Mississippian rocks and the unconformably overlying Mississippian to Lower Cretaceous cover sequence, and (2) lithology and structural competency of the pre-Mississippian rocks. These variables strongly influence lateral changes in structural style. The Brooks Range of northwestern ANWR is dominated by a series of narrow linear anticlinoria, whereas in northeastern ANWR the Brooks Range is characterized by only two broad and strongly arcuate anticlinoria. In both areas, the anticlinoria are controlled by the geometry of a duplex bounded by a floor thrust in pre-Mississippian rocks and a roof thrust in the Kayak Shale, near the base of the cover sequence. In the west, where the pre-Mississippian partially consists of structurally competent carbonates, each anticlinorium marks a single horse in the duplex. However, in the east, pre-Mississippian rocks are relatively incompetent and each anticlinorium is cored by multiple horses. In the west, shortening above the roof thrust is by detachment folding, except where the shale detachment horizon is depositionally absent. In contrast, in eastern ANWR shortening above the roof thrust is by major thrust duplication of the entire cover sequence, perhaps due to lithology and thickness changes within the detachment horizon.

Wallace, W.K.; Hanks, C.L.

1988-01-01T23:59:59.000Z

293

The Influence of fold and fracture development on reservoir behavior of the Lisburne Group of northern Alaska  

Science Conference Proceedings (OSTI)

The Carboniferous Lisburne Group is a major carbonate reservoir unit in northern Alaska. The Lisburne is folded and thrust faulted where it is exposed throughout the Brooks Range, but is relatively undeformed in areas of current production in the subsurface of the North Slope. The objectives of this study were to develop a better understanding of four major aspects of the Lisburne: (1) The geometry and kinematics of folds and their truncation by thrust faults. (2) The influence of folding on fracture patterns. (3) The influence of deformation on fluid flow. (4) Lithostratigraphy and its influence on folding, faulting, fracturing, and reservoir characteristics. Symmetrical detachment folds characterize the Lisburne in the northeastern Brooks Range. In contrast, Lisburne in the main axis of the Brooks Range is deformed into imbricate thrust sheets with asymmetrical hangingwall anticlines and footwall synclines. The Continental Divide thrust front separates these different structural styles in the Lisburne and also marks the southern boundary of the northeastern Brooks Range. Field studies were conducted for this project during 1999 to 2001 in various locations in the northeastern Brooks Range and in the vicinity of Porcupine Lake, immediately south of the Continental Divide thrust front. Results are summarized below for the four main subject areas of the study.

Wesley K. Wallace; Catherine L. Hanks; Jerry Jensen: Michael T. Whalen; Paul Atkinson; Joseph Brinton; Thang Bui; Margarete Jadamec; Alexandre Karpov; John Lorenz; Michelle M. McGee; T.M. Parris; Ryan Shackleton

2004-07-01T23:59:59.000Z

294

Motor-Driven Bacterial Flagella and Buckling Instabilities  

E-Print Network (OSTI)

Many types of bacteria swim by rotating a bundle of helical filaments also called flagella. Each filament is driven by a rotary motor and a very flexible hook transmits the motor torque to the filament. We model it by discretizing Kirchhoff's elastic-rod theory and develop a coarse-grained approach for driving the helical filament by a motor torque. A rotating flagellum generates a thrust force, which pushes the cell body forward and which increases with the motor torque. We fix the rotating flagellum in space and show that it buckles under the thrust force at a critical motor torque. Buckling becomes visible as a supercritical Hopf bifurcation in the thrust force. A second buckling transition occurs at an even higher motor torque. We attach the flagellum to a spherical cell body and also observe the first buckling transition during locomotion. By changing the size of the cell body, we vary the necessary thrust force and thereby obtain a characteristic relation between the critical thrust force and motor torque. We present a sophisticated analytical model for the buckling transition based on a helical rod which quantitatively reproduces the critical force-torque relation. Real values for motor torque, cell body size, and the geometry of the helical filament suggest that buckling should occur in single bacterial flagella. We also find that the orientation of pulling flagella along the driving torque is not stable and comment on the biological relevance for marine bacteria.

Reinhard Vogel; Holger Stark

2012-01-03T23:59:59.000Z

295

Idaho National Engineering and Environmental Laboratory institutional plan -- FY 2000--2004  

SciTech Connect

In this first institutional plan prepared by Bechtel BWXT Idaho, LLC, for the Idaho National Engineering and Environmental Laboratory, the INEEL will focus its efforts on three strategic thrusts: (1) Environmental Management stewardship for DOE-EM, (2) Nuclear reactor technology for DOE-Nuclear Energy (NE), and (3) Energy R and D, demonstration, and deployment (initial focus on biofuels and chemicals from biomass). The first strategic thrust focuses on meeting DOE-EMs environmental cleanup and long-term stewardship needs in a manner that is safe, cost-effective, science-based, and approved by key stakeholders. The science base at the INEEL will be further used to address a grand challenge for the INEEL and the DOE complex--the development of a fundamental scientific understanding of the migration of subsurface contaminants. The second strategic thrust is directed at DOE-NEs needs for safe, economical, waste-minimized, and proliferation-resistant nuclear technologies. As NE lead laboratories, the INEEL and ANL will pursue specific priorities. The third strategic thrust focuses on DOE's needs for clean, efficient, and renewable energy technology. As an initial effort, the INEEL will enhance its capability in biofuels, bioprocessing, and biochemicals. The content of this institutional plan is designed to meet basic DOE requirements for content and structure and reflect the key INEEL strategic thrusts. Updates to this institutional plan will offer additional content and resource refinements.

Enge, R.S.

1999-12-01T23:59:59.000Z

296

INEEL Institutional Plan - FY 2000-2004  

SciTech Connect

In this first Institutional Plan prepared by Bechtel BWXT Idaho, LLC, for the Idaho National Engineering and Environmental Laboratory, the INEEL will focus it's efforts on three strategic thrusts; (1) Environmental Management stewardship for DOE-EM, (2) Nuclear reactor technology for DOE-Nuclear Energy (NE), and (3) Energy R&D, demonstration, and deployment (initial focus on biofuels and chemical from biomass). The first strategic thrust focuses on meeting DOE-EM's environmental cleanup and long-term stewardship needs in a manner that is safe, cost-effective, science-based, and approved by key stakeholders. The science base at the INEEL will be further used to address a grand challenge for the INEEL and the DOE complex - the development of a fundamental scientific understanding of the migration of subsurface contaminants. The second strategic thrust is directed at DOE-NE's needs for safe, economical, waste-minimized, and proliferation-resistant nuclear technologies. As NE lead laboratories, the INEEL and ANL will pursue specific priorities. The third strategic thrust focuses on DOE's needs for clean, efficient, and renewable energy technology. As an initial effort, the INEEL will enhance its capability in biofuels, bioprocessing, and biochemicals. The content of this Institutional Plan is designed to meet basic DOE requirements for content and structure and reflect the key INEEL strategic thrusts. Updates to this Institutional Plan will offer additional content and resource refinements.

Enge, Ray Stevenson

1999-11-01T23:59:59.000Z

297

Ultrahigh Specific Impulse Nuclear Thermal Propulsion  

DOE Green Energy (OSTI)

Research on nuclear thermal propulsion systems (NTP) have been in forefront of the space nuclear power and propulsion due to their design simplicity and their promise for providing very high thrust at reasonably high specific impulse. During NERVA-ROVER program in late 1950's till early 1970's, the United States developed and ground tested about 18 NTP systems without ever deploying them into space. The NERVA-ROVER program included development and testing of NTP systems with very high thrust (~250,000 lbf) and relatively high specific impulse (~850 s). High thrust to weight ratio in NTP systems is an indicator of high acceleration that could be achieved with these systems. The specific impulse in the lowest mass propellant, hydrogen, is a function of square root of absolute temperature in the NTP thrust chamber. Therefor optimizing design performance of NTP systems would require achieving the highest possible hydrogen temperature at reasonably high thrust to weight ratio. High hydrogen exit temperature produces high specific impulse that is a diret measure of propellant usage efficiency.

Anne Charmeau; Brandon Cunningham; Samim Anghaie

2009-02-09T23:59:59.000Z

298

CX-005184: Categorical Exclusion Determination | Department of Energy  

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

84: Categorical Exclusion Determination 84: Categorical Exclusion Determination CX-005184: Categorical Exclusion Determination The Development of Open, Water Lubricated Polycrystalline Diamond Thrust Bearings For use in Marine Hydrokinetic Energy Machines CX(s) Applied: A9, B3.6 Date: 01/28/2011 Location(s): Orem, Utah Office(s): Energy Efficiency and Renewable Energy, Golden Field Office United States Synthetic Corporation is proposing to use federal funding to design, fabricate and test polycrystalline diamond (PCD) thrust bearings for marine hydrokinetic (MHK) systems. A key design element in most MHK strategies would be robust bearings, which can operate for extended periods of time in the harsh marine environments. The goal of the proposed project is to demonstrate how PCD thrust bearings would reduce the cost of

299

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

300

CX-005128: Categorical Exclusion Determination | Department of Energy  

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

28: Categorical Exclusion Determination 28: Categorical Exclusion Determination CX-005128: Categorical Exclusion Determination The Development of Open, Water Lubricated Polycrystalline Diamond Thrust Bearings For use in Marine Hydrokinetic (MHK) Energy Machines CX(s) Applied: A9, B3.6 Date: 01/25/2011 Location(s): Orem, Utah Office(s): Energy Efficiency and Renewable Energy, Golden Field Office United States Synthetic Corporation is proposing to use federal funding to design, fabricate and test polycrystalline diamond (PCD) thrust bearings for marine hydrokinetic (MHK) systems. A key design element in most MHK strategies would be robust bearings, which can operate for extended periods of time in the harsh marine environments. The goal of the proposed project is to demonstrate how PCD thrust bearings would reduce the cost of

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Hydrodynamics of undulatory fish schooling in lateral configurations  

E-Print Network (OSTI)

The thrust benefits of lateral configurations of two-dimensional undulating fish-like bodies are investigated using high-fidelity numerical simulation. The solution of the Navier--Stokes equations is carried out with a viscous vortex particle method. Configurations of tethered pairs of fish arranged side by side are studied by varying the lateral separation distance and relative phase difference. It is shown that, in mirroring symmetry, the fish in the pair augment each other's thrust even at relatively large separations (up to ten body lengths). At small distances, this augmentation is primarily brought about by a peristaltic pumping in the gap between the fish, whereas at larger distances, the thrust is affected by subtle changes in the vortex shedding at the tail due to interactions with the other fish. In cases without symmetric undulation, one fish always draws more benefit from the interaction than the other. Finally, lateral configurations with three fish are studied with mirroring symmetry between nei...

Zhang, Li Jeany

2010-01-01T23:59:59.000Z

302

The Pre-storm Environment of Midlatitude Prefrontal Squall Lines  

Science Conference Proceedings (OSTI)

Composite environmental profiles Of wind and temperature are presented for squall line cases that are spatially removed from frontal disturbances. The motions of the squall lines are inferred from radar data, and the mean environmental wind ...

Jonathan Wyss; Kerry A. Emanuel

1988-03-01T23:59:59.000Z

303

Tropical Storm Formation in a Baroclinic Environment  

Science Conference Proceedings (OSTI)

An analysis is presented of the large-scale conditions associated with the initial development of Tropical Storm Diana (September 1984) in a baroclinic environment. Ordinary extratropical wave cyclogenesis began along an old frontal boundary east ...

Lance F. Bosart; Joseph A. Bartlo

1991-08-01T23:59:59.000Z

304

Ocean fronts in the Southern California Current System and their role in structuring zooplankton distributions, diel vertical migration, and size composition  

E-Print Network (OSTI)

Current: The coastal- offshore boundary zone. Journal ofCurrent: The coastal-offshore boundary zone. Journal of4.1: Comparison of inshore and offshore (relative to frontal

Powell, Jesse Russell

305

Numerical Study of Precipitation Core-Gap Structure along Cold Fronts  

Science Conference Proceedings (OSTI)

The mechanism responsible for the core-gap structure of precipitation along narrow cold-frontal rainbands (NCFRs) is investigated through analyses of idealized cloud-resolving simulations of cold fronts. The control simulation, in which the ...

Masayuki Kawashima

2007-07-01T23:59:59.000Z

306

Initiation and Evolution of an Intense Upper-Level Front  

Science Conference Proceedings (OSTI)

Within confluent northwesterly flow of an intensifying baroclinic wave over North America in late October 1963, an intense frontal zone developed in 12 h near the inflection point in the middle and upper troposphere. By 24 h after its initial ...

Frederick Sanders; Lance F. Bosart; Chung-Chieng Lai

1991-06-01T23:59:59.000Z

307

VHF-ST Radar Observations of an Upper-Level Front Using Vertical and Oblique-Beam C2N Measurements  

Science Conference Proceedings (OSTI)

Mesoscale aspects of an upper-level front that moved over Brittany (France) during the Mesoscale Frontal Dynamical Project 1987 experiment are investigated using very high frequency stratospheric–tropospheric (VHF-ST) radar data and European ...

J-L. Caccia; J-P. Cammas

1998-02-01T23:59:59.000Z

308

Effects of psychostimulants on alertness and spatial bias in healthy participants  

Science Conference Proceedings (OSTI)

Converging evidence from neuropsychological and neuroimaging studies suggests that the ability to maintain an alert, ready-to-respond state is mediated by a network of right-hemisphere frontal and parietal cortical areas. This right lateralization may ...

Chris Dodds; Ulrich Müller; Tom Manly

2009-03-01T23:59:59.000Z

309

From an executive network to executive control: A computational model of the n-back task  

Science Conference Proceedings (OSTI)

A paradigmatic test of executive control, the n-back task, is known to recruit a widely distributed parietal, frontal, and striatal "executive network," and is thought to require an equally wide array of executive functions. The mapping of functions ...

Christopher H. Chatham; Seth A. Herd; Angela M. Brant; Thomas E. Hazy; Akira Miyake; Randy O'Reilly; Naomi P. Friedman

2011-11-01T23:59:59.000Z

310

Prisms with total internal reflection as solar reflectors  

DOE Patents (OSTI)

An improved reflective wall for radiant energy collection and concentration devices is provided. The wall is comprised of a plurality of prisms whose frontal faces are adjacent and which reflect the desired radiation by total internal reflection.

Rabl, Arnulf (Downers Grove, IL); Rabl, Veronika (Downers Grove, IL)

1978-01-01T23:59:59.000Z

311

The Role of Forcing in Cell Morphology and Evolution within Midlatitude Squall Lines  

Science Conference Proceedings (OSTI)

This study assesses the role of mesoscale forcing on cell morphology and early evolution of midlatitude squall lines. The forcing chosen was a cold front, simulated to frontal collapse to produce a specific set of thermodynamic profiles at the ...

Brian F. Jewett; Robert B. Wilhelmson

2006-12-01T23:59:59.000Z

312

Turbulent Mixing within Tropopause Folds as a Mechanism for the Exchange of Chemical Constituents between the Stratosphere and Troposphere  

Science Conference Proceedings (OSTI)

Evidence is presented which illustrates the role of jet stream-frontal zone clear air turbulence (CAT) as a mechanism for the exchange of air and chemical trace constituents between the stratosphere and the troposphere. Three-dimensional air ...

M. A. Shapiro

1980-05-01T23:59:59.000Z

313

A Comparative Analysis of the Temporal Variability of Lightning Observations and GOES Imagery  

Science Conference Proceedings (OSTI)

Lightning Positioning and Tracking System (LPATS) data received by the Cooperative Institute for Research in the Atmosphere via a real-time weather data network were used to study the temporal variability of lightning for a frontal system and ...

P. B. Roohr; T. H. Vonder Haar

1994-11-01T23:59:59.000Z

314

A Coupled Air–Sea Mesoscale Model: Experiments in Atmospheric Sensitivity to Marine Roughness  

Science Conference Proceedings (OSTI)

A coupled air–sea numerical model comprising a mesoscale atmospheric model, a marine circulation model, and a surface wave model is presented. The coupled model is tested through simulations of an event of frontal passage through the Lake Erie ...

Jordan G. Powers; Mark T. Stoelinga

2000-01-01T23:59:59.000Z

315

Surface Weather Analysis at the National Meteorological Center: Current Procedures and Future Plans  

Science Conference Proceedings (OSTI)

The preparation of surface weather analyses at the National Meteorological Center (NMC) is currently under review. The availability of advanced graphics workstations and consideration of revisions to conceptual models of cyclogenesis and frontal ...

Paul J. Kocin; David A. Olson; Arthur C. Wick; Robert D. Harner

1991-06-01T23:59:59.000Z

316

On the Movement and Low-Level Structure of Cold Fronts  

Science Conference Proceedings (OSTI)

This paper presents a review of theoretical and observational studies relating to the low-level structure of cold fronts and explores the factors that are pertinent to frontal motion.

Roger K. Smith; Michael J. Reeder

1988-10-01T23:59:59.000Z

317

A Cyclone Phase Space Derived from Thermal Wind and Thermal Asymmetry  

Science Conference Proceedings (OSTI)

An objectively defined three-dimensional cyclone phase space is proposed and explored. Cyclone phase is described using the parameters of storm-motion-relative thickness asymmetry (symmetric/nonfrontal versus asymmetric/frontal) and vertical ...

Robert E. Hart

2003-04-01T23:59:59.000Z

318

Intrusive gravity currents  

E-Print Network (OSTI)

The front speed of intrusive gravity currents. J. FluidP.F. Linden. Intrusive gravity currents. J. Fluid Mechanics,of mesoscale variability of gravity waves. Part II: Frontal,

Hang, Alice Thanh

2009-01-01T23:59:59.000Z

319

Instability of the Gulf Stream Front in the South Atlantic Bight  

Science Conference Proceedings (OSTI)

To understand Gulf Stream meanders in the South Atlantic Bight, the growth of three-dimensional perturbations along two-dimensional frontal zones is examined by using linearized primitive equations. The Fourier–Galerkin method and the orthogonal ...

Huijie Xue; George Mellor

1993-11-01T23:59:59.000Z

320

Radar Observations and Numerical Modeling of a Precipitating Line during MAP IOP 5  

Science Conference Proceedings (OSTI)

During the special observing period of the Mesoscale Alpine Programme, a narrow north–south-oriented frontal precipitation band was observed by two airborne and one operational Doppler radar on 4 October 1999, over the Friuli target area in ...

Stéphanie Pradier; Michel Chong; Frank Roux

2002-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Intensification of Ocean Fronts by Down-Front Winds  

Science Conference Proceedings (OSTI)

Many ocean fronts experience strong local atmospheric forcing by down-front winds, that is, winds blowing in the direction of the frontal jet. An analytic theory and nonhydrostatic numerical simulations are used to demonstrate the mechanism by ...

Leif N. Thomas; Craig M. Lee

2005-06-01T23:59:59.000Z

322

Limited Area Energetics of Genoa Cyclogenesis  

Science Conference Proceedings (OSTI)

The energetics of a frontal depression initially formed in the Gulf of Genoa is studied. The partition of available potential energy and kinetic energy into zonal and eddy components is adopted. The energy equations, as developed for an open area ...

Silas Chr Michaelides

1987-01-01T23:59:59.000Z

323

The Australian Summertime Cool Change. Part II: Mesoscale Aspects  

Science Conference Proceedings (OSTI)

Observations of four cold-frontal systems traversing the coastal region of southeast Australia in late spring and early summer are described in terms of process occurring on the mesoscale. A conceptual model is presented which summarizes the main ...

J. R. Garratt; W. L. Physick; R. K. Smith; A. J. Troup

1985-02-01T23:59:59.000Z

324

Two-and Three-Dimensional Modelling Studies of the Big Thompson Storm  

Science Conference Proceedings (OSTI)

The Big Thompson storm occurred on 31 July–1 August 1976 over Big Thompson Canyon, Colorado, when a secondary cold frontal surge was accelerated and reached the foothills of the Front Range. Two- and three-dimensional moist compressible cloud ...

Masanori Yoshizaki; Yoshi Ogura

1988-12-01T23:59:59.000Z

325

A Narrow Clear Zone Over Florida and the Atlantic Ocean  

Science Conference Proceedings (OSTI)

A narrow cloud-free zone of large longitudinal extent was observed in visible and infrared satellite imagery on 21 September 1978. An attempt to explain the zone in terms of subsidence induced by a transverse frontal circulation is presented.

Andrew J. Negri; K. Robert Morris

1980-04-01T23:59:59.000Z

326

Frontogenesis in a Moist Semigeostrophic Model  

Science Conference Proceedings (OSTI)

Analytic solutions are obtained for a prototype semigeostrophic frontal model in which cumulus heating is parameterized by applying the conventional wave-CISK scheme and the scheme of Mak in the geostrophic coordinate. Such heating schemes give ...

Mankin Mak; Peter R. Bannon

1984-12-01T23:59:59.000Z

327

Cross-Barrier Flow during Orographic Precipitation Events: Results from MAP and IMPROVE  

Science Conference Proceedings (OSTI)

Ground-based and airborne Doppler radar data collected during passage of frontal rainstorms over the European Alps and Cascade Mountains of Oregon are found to exhibit characteristic cross-barrier flow and precipitation patterns. A stably ...

Socorro Medina; Bradley F. Smull; Robert A. Houze Jr.; Matthias Steiner

2005-10-01T23:59:59.000Z

328

Diagnosis of the Role of Vertical Deformation in a Two-Dimensional Primitive Equation Model of Upper-Level Frontogenesis  

Science Conference Proceedings (OSTI)

Equations are developed for the temporal rates of change of the magnitudes of vector gradients of potential temperature and absolute momentum projected onto vertical planes transverse to straight frontal zones. Subject to restrictions involving ...

Daniel Keyser; Michael J. Pecnick; M. A. Shapiro

1986-04-01T23:59:59.000Z

329

Prefrontal Troughs over Southern Australia. Part II: A Case Study of Frontogenesis  

Science Conference Proceedings (OSTI)

A case study of frontogenesis within a surface prefrontal trough over southern Australia is presented. The trough developed ahead of a surface cold front and, over a period of approximately 24 h, intensified into a mature summertime frontal ...

B. N. Hanstrum; K. J. Wilson; S. L. Barrell

1990-03-01T23:59:59.000Z

330

A Modeling Case Study of Mixed-Phase Clouds over the Southern Ocean and Tasmania  

Science Conference Proceedings (OSTI)

The cloud structure associated with two frontal passages over the Southern Ocean and Tasmania is investigated. The first event, during August 2006, is characterized by large quantities of supercooled liquid water and little ice. The second case, ...

Anthony E. Morrison; Steven T. Siems; Michael J. Manton; Alex Nazarov

2010-03-01T23:59:59.000Z

331

Relative Humidity in Liquid, Mixed-Phase, and Ice Clouds  

Science Conference Proceedings (OSTI)

The results of in situ observations of the relative humidity in liquid, mixed, and ice clouds typically stratiform in nature and associated with mesoscale frontal systems at temperatures ?45°C < Ta < ?5°C are presented. The data were collected ...

Alexei Korolev; George A. Isaac

2006-11-01T23:59:59.000Z

332

Frontogenesis in the Presence of Surface Heating  

Science Conference Proceedings (OSTI)

Observations indicate that frontal zones that form in the presence of strong surface sensible heating have a structure that is markedly different from those that form adiabatically. These differences include: a highly asymmetric low-level jet, ...

G. W. Kent Moore

1991-01-01T23:59:59.000Z

333

A Parameterization of the Visible Extinction Coefficient of Ice Clouds in Terms of the Ice/Water Content  

Science Conference Proceedings (OSTI)

This article describes a parameterization of the visible extinction coefficient of cirrus and frontal ice cloud in terms of the ice/water content. The parameterization is based on the discovery that the ice cloud particle size spectra from a ...

C. Martin R. Platt

1997-08-01T23:59:59.000Z

334

Potential Vorticity Structure across the Gulf Stream: Observations and a PV-Gradient Model  

Science Conference Proceedings (OSTI)

Potential vorticity (PV) structure across a baroclinic front is a property that determines the stability characteristics of that front, cross-frontal exchange, and the behavior of the vortical waves that this front enables. Hence, there has been ...

Oleg Logoutov; George Sutyrin; D. Randolph Watts

2001-02-01T23:59:59.000Z

335

The Marine Boundary Layer in the Vicinity of an Ocean Front  

Science Conference Proceedings (OSTI)

Aircraft observations obtained during the Frontal Air–Sea Interaction Experiment (FASINEX) are used to investigate the structure of the marine atmospheric boundary layer in the vicinity of an ocean front. A quasi-stationary sea surface ...

David P. Rogers

1989-07-01T23:59:59.000Z

336

Synthetic Aperture Radar as a Tool for Investigating Polar Mesoscale Cyclones  

Science Conference Proceedings (OSTI)

Polar mesoscale cyclones are intense vortices that form in cold, marine air masses poleward of major jet streams and frontal zones. Synthetic aperture radar (SAR) should be considered as a potential tool for the study of polar mesoscale cyclones ...

Todd D. Sikora; Karen S. Friedman; William G. Pichel; Pablo Clemente-Colón

2000-12-01T23:59:59.000Z

337

A Geostrophic Adjustment Model of Two Buoyant Fluids  

Science Conference Proceedings (OSTI)

A combination of analytical calculations and laboratory experiments has been used to investigate the geostrophic adjustment of two buoyant fluids having different densities in a third denser ambient fluid. The frontal position, the depth profile, ...

Claudia Cenedese; James A. Lerczak; Giuseppe Bartone

2012-11-01T23:59:59.000Z

338

A comparison of automated methods of front recognition for climate studies – a case study in south west Western Australia  

Science Conference Proceedings (OSTI)

The identification of extratropical fronts in reanalyses and climate models is an important climate diagnostic that aids dynamical understanding and model verification. This study compares six frontal identification methods which are applied to ...

Pandora Hope; Kevin Keay; Michael Pook; Jennifer Catto; Ian Simmonds; Graham Mills; Peter McIntosh; James Risbey; Gareth Berry

339

Reviewed by:  

E-Print Network (OSTI)

doi: 10.3389/fneur.2011.00078 Vestibular-related frontal cortical areas and their roles in smooth-pursuit eye movements: representation of neck velocity, neck-vestibular interactions, and memory-based smooth-pursuit

Kikuro Fukushima; Junko Fukushima; Tateo Warabi; Pierre-paul Vidal; Universite Rene; Hans Van Der Steen; Giacinto Asprella-libonati Madonne; Kikuro Fukushima; Clinical Brain

2011-01-01T23:59:59.000Z

340

Formation of Small-Scale Cyclones in Numerical Simulations of Synoptic-Scale Baroclinic Wave Life Cycles: Secondary Instability at the Cusp  

Science Conference Proceedings (OSTI)

An examination of high-resolution simulations of nonlinear baroclinic wave evolution, based upon the nonhydrostatic anelastic equations, has revealed the occurrence of frontal instabilities following cutoff of the primary wave occlusion. The ...

S. M. Polavarapu; W. R. Peltier

1993-04-01T23:59:59.000Z

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


341

Circulations between Mesoscale Convective Systems along a Cold Front  

Science Conference Proceedings (OSTI)

A frontal squall line that passed over the central United States on 14–15 June 1985 consisted of several primary mesoscale convective systems (MCSs) with a prominent gap (several hundred kilometers wide) between two of them over central Kansas ...

Richard H. Johnson; Barbara D. Miner; Paul E. Ciesielski

1995-03-01T23:59:59.000Z

342

Organization and Structure of Clouds and Precipitation on the Mid-Atlantic Coast of the United States. Part V: The Role of an Upper-Level Front in the Generation of a Rainband  

Science Conference Proceedings (OSTI)

The origins of a rainband of moderate intensity that occurred over the eastern Carolinas is investigated. It is concluded that the band formed in the updraft portion of a thermodynamically direct vertical circulation about an upper-level frontal ...

Jonathan E. Martin; John D. Locatelli; Peter V. Hobbs

1992-08-01T23:59:59.000Z

343

A Model of the Zonally Averaged Stratification and Overturning in the Southern Ocean  

Science Conference Proceedings (OSTI)

The ocean area south of the Antarctic Circumpolar Current (ACC) frontal system is a region of major watermass modification. Influx of North Atlantic Deep Water (NADW), small-scale mixing, eddy transport and diffusion, as well as the fluxes of ...

Dirk Olbers; Martin Visbeck

2005-07-01T23:59:59.000Z

344

Gray matter correlates of cognitive ability tests used for vocational guidance  

E-Print Network (OSTI)

temporal lobe and frontal BAs 10 and 47. There is no overlaplarge clus- ter in the occipital lobe (BAs 17, 18, 19; p BAs 31, 32), the post central gyrus (

Haier, Richard J; Schroeder, David H; Tang, Cheuk; Head, Kevin; Colom, Roberto

2010-01-01T23:59:59.000Z

345

The Formation and Fate of a River Plume: A Numerical Model  

Science Conference Proceedings (OSTI)

A mathematical model that describes the formation and dilution of a frontally bounded river plume is presented. Such features were first studied at the mouth of the Connecticut River during periods of high discharge and have subsequently been ...

James O'Donnell

1990-04-01T23:59:59.000Z

346

Climatology of Strong Intermountain Cold Fronts  

Science Conference Proceedings (OSTI)

Motivated by the intensity and severity of winds and temperature falls that frequently accompany rapidly developing cold fronts in northern Utah, this paper presents a 25-yr climatology of strong cold frontal passages over the Intermountain West ...

Jason C. Shafer; W. James Steenburgh

2008-03-01T23:59:59.000Z

347

The Evolution of an Observed Cold Front. Part II: Mesoscale Dynamics  

Science Conference Proceedings (OSTI)

A detailed analysis is made of a three-dimensional numerical simulation of the evolution of an observed moist frontal system over a 48 h period. The simulated front undergoes an initial period of frontogenetic growth, characterized by an ...

Isidoro Orlanski; Bruce B. Ross

1984-05-01T23:59:59.000Z

348

The Impact of Nonsynoptic Sampling on Mesoscale Oceanographic Surveys with Towed Instruments  

Science Conference Proceedings (OSTI)

Mesoscale ocean features, such as eddies and frontal meanders, have temporal and spatial scales that are poorly resolved by conventional surveying methods such as moorings and CTD casts. Towed instruments provide a method of measuring ...

P. A. Matthews

1997-02-01T23:59:59.000Z

349

Frontogenesis Processes in the Middle and Upper Troposphere  

Science Conference Proceedings (OSTI)

Basic issues regarding upper-level frontogenesis addressed in this paper are: (i) simulated frontogenesis influenced by the initial flow, (ii) upper-level frontogenesis as essentially a two-dimensional process, and (iii) frontal-scale positive ...

Keith M. Hines; Carlos R. Mechoso

1991-05-01T23:59:59.000Z

350

A Synoptic Overview of a Heavy Rain Event in Southern China  

Science Conference Proceedings (OSTI)

The meteorological events surrounding the heavy rains of 23–25 June 1983 in the Yangtze River Valley of China are investigated. The rains developed along a persistent quasi-stationary frontal boundary that separated warm, moist tropical air from ...

Kai-Yu Ma; Lance F. Bosart

1987-06-01T23:59:59.000Z

351

The Behavior of Dry Cold Fronts Traveling Along a Coastline  

Science Conference Proceedings (OSTI)

Observations of intense, dry summertime cold fronts in southeast Australia provide evidence for frontal deformation (cold air surges) in the coastal region well to the west of the main mountain range. This compares with the severe deformation ...

J. R. Garratt; P. A. C. Howells; E. Kowalczyk

1989-06-01T23:59:59.000Z

352

Effect of Bathymetric Curvature on Gulf Stream Instability in the Vicinity of the Charleston Bump  

Science Conference Proceedings (OSTI)

The effect of the isobathic curvature on the development and evolution of Gulf Stream frontal waves (meanders and eddies) in the vicinity of the Charleston Bump (a topographic rise on the upper slope off Charleston, South Carolina; referred to as ...

Lian Xie; Xiaoming Liu; Leonard J. Pietrafesa

2007-03-01T23:59:59.000Z

353

Turbulent Mixing at the Pacific Subtropical Front  

Science Conference Proceedings (OSTI)

Some advection of water across the North Pacific subtropical front occurs by the subduction of surface mixed layers from the north side of the front underneath surface waters on the south side. Cross-frontal advection in the thermocline is ...

Rolf G. Lueck

1988-12-01T23:59:59.000Z

354

Double-Diffusive Interleaving. Part I: Linear Stability Analysis  

Science Conference Proceedings (OSTI)

Quasi-horizontal interleaving between water masses is frequently observed in the frontal regions between different water masses where there are significant compensating isopycnal gradients of temperature and salinity. It is believed that these ...

Trevor J. McDougall

1985-11-01T23:59:59.000Z

355

The Subinertial Momentum Balance of the North Atlantic Subtropical Convergence Zone  

Science Conference Proceedings (OSTI)

The upper-ocean to forcing by pressure gradients and wind stress is examined using observations from the Frontal Air–Sea Interaction Experiment. A moored way acquired time series of winds. upper-ocean currents, temperatures, and salinities ...

Craig M. Lee; Charles C. Eriksen

1996-09-01T23:59:59.000Z

356

The IMPROVE-1 Storm of 1–2 February 2001. Part III: Sensitivity of a Mesoscale Model Simulation to the Representation of Snow Particle Types and Testing of a Bulk Microphysical Scheme with Snow Habit Prediction  

Science Conference Proceedings (OSTI)

A mesoscale model simulation of a wide cold-frontal rainband observed in the Pacific Northwest during the Improvement of Microphysical Parameterization through Observational Verification Experiment (IMPROVE-1) field study was used to test the ...

Christopher P. Woods; Mark T. Stoelinga; John D. Locatelli

2007-11-01T23:59:59.000Z

357

Hydraulic Control of a Highly Stratified Estuarine Front  

Science Conference Proceedings (OSTI)

Observations at the mouth of the Fraser River (British Columbia, Canada) indicate an abrupt frontal transition between unstratified river outflow and a highly stratified river plume with differences in salinity greater than 25 psu across a few ...

Daniel G. MacDonald; W. Rockwell Geyer

2005-03-01T23:59:59.000Z

358

Observations and Numerical Simulations of Inertia–Gravity Waves and Shearing Instabilities in the Vicinity of a Jet Stream  

Science Conference Proceedings (OSTI)

The characteristics and dynamics of inertia–gravity waves generated in the vicinity of an intense jet stream/ upper-level frontal system on 18 February 2001 are investigated using observations from the NOAA Gulfstream-IV research aircraft and ...

Todd P. Lane; James D. Doyle; Riwal Plougonven; Melvyn A. Shapiro; Robert D. Sharman

2004-11-01T23:59:59.000Z

359

An Algorithm for the Detection of Fronts in Wind Profiler Data  

Science Conference Proceedings (OSTI)

An algorithm to detect frontal zones in time–height cross sections of horizontal wind from wind profiler measurements is described. The algorithm works by identifying regions with 1) a strong horizontal temperature gradient, estimated by using a ...

Christopher Lucas; Peter T. May; Robert A. Vincent

2001-04-01T23:59:59.000Z

360

An Objective Climatology of Carolina Coastal Fronts  

Science Conference Proceedings (OSTI)

This study describes a simple objective method to identify cases of coastal frontogenesis offshore of the Carolinas and to characterize the sensible weather associated with frontal passage at measurement sites near the coast. The identification ...

K. Wyat Appel; Allen J. Riordan; Timothy A. Holley

2005-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Airmass Modification over the Gulf of Mexico: Mesoscale Model and Airmass Transformation Model Forecasts  

Science Conference Proceedings (OSTI)

Several numerical models are used to examine strong air-sea fluxes and resultant airmass modification following a cold-frontal passage over the Gulf of Mexico. Data from the Gulf of Mexico Experiment (GUFMEX), which was conducted in February-...

Stephen D. Burk; William T. Thompson

1992-08-01T23:59:59.000Z

362

Detecting Gulf of Mexico Oceanographic Features in Summer Using AVHRR Channel 3  

Science Conference Proceedings (OSTI)

Efforts to monitor the Gulf of Mexico Loop Current and mesoscale ocean features using IR satellite imagery in the summertime have been significantly hindered by 1) strong surface heating that masks surface frontal gradients and 2) extremely high ...

Douglas A. May; Jeffrey0 Hawkins; Robert L. Pickett

1993-02-01T23:59:59.000Z

363

Axial force imparted by a conical radiofrequency magneto-plasma thruster  

SciTech Connect

Direct thrust measurements of a low pressure ({approx}0.133 Pa) conical radiofrequency (rf at 13.56 MHz) argon plasma source show a total axial force of about 5 mN for an effective rf power of 650 W and a maximum magnetic field of 0.018 T, of which a measured value of 2.5 mN is imparted by the magnetic nozzle. A simplified model of thrust including contributions from the electron pressure and from the magnetic field pressure is developed. The magnetic nozzle is modelled as a ''physical'' nozzle of increasing cross-sectional area.

Charles, C.; Takahashi, K.; Boswell, R. W. [Space Plasma, Power and Propulsion Laboratory, Research School of Physics and Engineering, Australian National University, ACT 0200 (Australia)

2012-03-12T23:59:59.000Z

364

Chemically-Assisted Pulsed Laser-Ramjet  

SciTech Connect

A preliminary study of a chemically-assisted pulsed laser-ramjet was conducted, in which chemical propellant such as a gaseous hydrogen/air mixture was utilized and detonated with a focused laser beam in order to obtain a higher impulse compared to the case only using lasers. CFD analysis of internal conical-nozzle flows and experimental measurements including impulse measurement were conducted to evaluate effects of chemical reaction on thrust performance improvement. From the results, a significant improvement in the thrust performances was confirmed with addition of a small amount of hydrogen to propellant air, or in chemically-augmented operation.

Horisawa, Hideyuki; Kaneko, Tomoki; Tamada, Kazunobu [Department of Aeronautics and Astronautics, Tokai University, Hiratsuka, Kanagawa, 259-1292 (Japan)

2010-10-13T23:59:59.000Z

365

Radioisotope electric propulsion of sciencecraft to the outer solar system and near-interstellar space  

Science Conference Proceedings (OSTI)

Recent results are presented in the study of radioisotope electric propulsion as a near-term technology for sending small robotic sciencecraft to the outer Solar System and near-interstellar space. Radioisotope electric propulsion (REP) systems are low-thrust, ion propulsion units based on radioisotope electric generators and ion thrusters. Powerplant specific masses are expected to be in the range of 100 to 200 kg/kW of thrust power. Planetary rendezvous missions to Pluto, fast missions to the heliopause (100 AU) with the capability to decelerate an orbiter for an extended science program and prestellar missions to the first gravitational lens focus of the Sun (550 AU) are investigated.

Noble, R.J.

1998-08-01T23:59:59.000Z

366

Canned pump having a high inertia flywheel  

DOE Patents (OSTI)

A canned pump is described which includes a motor, impeller, shaft, and high inertia flywheel mounted within a hermetically sealed casing. The flywheel comprises a heavy metal disk made preferably of a uranium alloy with a stainless steel shell sealably enclosing the heavy metal. The outside surfaces of the stainless steel comprise thrust runners and a journal for mating with, respectively, thrust bearing shoes and radial bearing segments. The bearings prevent vibration of the pump and, simultaneously, minimize power losses normally associated with the flywheel resulting from frictionally pumping surrounding fluid.

Veronesi, Luciano (O' Hara Twp., Allegheny County, PA); Raimondi, ALbert A. (Monroeville Borough, Allegheny County, PA)

1989-01-01T23:59:59.000Z

367

Canned pump having a high inertia flywheel  

DOE Patents (OSTI)

A canned pump is described which includes a motor, impeller, shaft, and high inertia flywheel mounted within a hermetically sealed casing. The flywheel comprises a heavy metal disk made preferably of a uranium alloy with a stainless steel shell sealably enclosing the heavy metal. The outside surfaces of the stainless steel comprise thrust runners and a journal for mating with, respectively, thrust bearing shoes and radial bearing segments. The bearings prevent vibration of the pump and, simultaneously, minimize power losses normally associated with the flywheel resulting from frictionally pumping surrounding fluid. 5 figs.

Veronesi, L.; Raimondi, A.A.

1989-12-12T23:59:59.000Z

368

Optical engineering  

SciTech Connect

The Optical Engineering thrust area at Lawrence Livermore National Laboratory (LLNL) was created in the summer of 1996 with the following main objectives: (1) to foster and stimulate leading edge optical engineering research and efforts key to carrying out LLNL's mission and enabling major new programs; (2) to bring together LLNL's broad spectrum of high level optical engineering expertise to support its programs. Optical engineering has become a pervasive and key discipline, with applications across an extremely wide range of technologies, spanning the initial conception through the engineering refinements to enhance revolutionary application. It overlaps other technologies and LLNL engineering thrust areas.

Saito, T T

1998-01-01T23:59:59.000Z

369

Investigation of component failures in downhole geothermal pumping systems. Final report  

DOE Green Energy (OSTI)

This study investigated component failures in electric, downhole submersible pumps which prevented the attainment of one year continuous downhole running times in geothermal wells at temperatures up to 375/sup 0/F. The feasibility of a pressurized motor to prevent brine intrusion was investigated, as well as improved pothead and packoff designs, and brine scale buildup on impeller sleeve bearings and thrust washers. (ACR)

Werner, D.K.

1985-03-15T23:59:59.000Z

370

Reflector for efficient coupling of a laser beam to air or other fluids  

DOE Patents (OSTI)

A reflector array is disclosed herein that provides a controlled region or regions of plasma breakdowns from a laser beam produced at a remotely-based laser source. The plasma may be applied to produce thrust to propel a spacecraft, or to diagnose a laser beam, or to produce shock waves. The spacecraft propulsion system comprises a reflector array attached to the vehicle. The reflector array comprises a plurality of reflectors spaced apart on a reflective surface, with each reflector acting as an independent focusing mirror. The reflectors are spaced closely together to form a continuous or partially-continuous surface. The reflector array may be formed from a sheet of reflective material, such as copper or aluminum. In operation, a beam of electromagnetic energy, such as a laser beam, is directed at the reflectors which focus the reflected electromagnetic energy at a plurality of regions off the surface. The energy concentrated in the focal region causes a breakdown of the air or other fluid in the focal region, creating a plasma. Electromagnetic energy is absorbed in the plasma and it grows in volume, compressing and heating the adjacent fluid thereby providing thrust. Laser pulses may be applied repetitively. After each such thrust pulse, fresh air can be introduced next to the surface either laterally, or through a perforated surface. If air or some other gas or vapor is supplied, for example from a tank carried on board a vehicle, this invention may also be used to provide thrust in a vacuum environment. 10 figs.

Kare, J.T.

1992-10-06T23:59:59.000Z

371

Learning from the past: guidelines for the future  

Science Conference Proceedings (OSTI)

"There is no reason to believe that simply providing the schools with microcomputers will do much to improve education. Indeed, the thrust of our experience in the United States gives us every reason to believe that doing so will mostly be a waste. Time ...

Joe Nathan

1986-01-01T23:59:59.000Z

372

Reflector for efficient coupling of a laser beam to air or other fluids  

DOE Patents (OSTI)

A reflector array is disclosed herein that provides a controlled region or regions of plasma breakdowns from a laser beam produced at a remotely-based laser source. The plasma may be applied to produce thrust to propel a spacecraft, or to diagnose a laser beam, or to produce shockwaves. The spacecraft propulsion system comprises a reflector array attached to the vehicle. The reflector array comprises a plurality of reflectors spaced apart on a reflective surface, with each reflector acting as an independent focusing mirror. The reflectors are spaced closely together to form a continuous or partially-continuous surface. The reflector array may be formed from a sheet of reflective material, such as copper or aluminum. In operation, a beam of electromagnetic energy, such as a laser beam, is directed at the reflectors which focus the reflected electromagnetic energy at a plurality of regions off the surface. The energy concentrated in the focal region causes a breakdown of the air or other fluids in the focal region, creating a plasma. Electromagnetic energy is absorbed in the plasma and it grows in volume, compressing and heating the adjacent fluid thereby providing thrust. Laser pulses may be applied repetitively. After each such thrust pulse, fresh air can be introduced next to the surface either laterally, or through a perforated surface. If air or some other gas or vapor is supplied, for example from a tank carried on board a vehicle, this invention may also be used to provide thrust in a vacuum environment. 8 figs.

Kare, J.T.

1990-12-31T23:59:59.000Z

373

Reflector for efficient coupling of a laser beam to air or other fluids  

DOE Patents (OSTI)

A reflector array is disclosed herein that provides a controlled region or regions of plasma breakdowns from a laser beam produced at a remotely-based laser source. The plasma may be applied to produce thrust to propel a spacecraft, or to diagnose a laser beam, or to produce shockwaves. The spacecraft propulsion system comprises a reflector array attached to the vehicle. The reflector array comprises a plurality of reflectors spaced apart on a reflective surface, with each reflector acting as an independent focusing mirror. The reflectors are spaced closely together to form a continuous or partially-continuous surface. The reflector array may be formed from a sheet of reflective material, such as copper or aluminum. In operation, a beam of electromagnetic energy, such as a laser beam, is directed at the reflectors which focus the reflected electromagnetic energy at a plurality of regions off the surface. The energy concentrated in the focal region causes a breakdown of the air or other fluids in the focal region, creating a plasma. Electromagnetic energy is absorbed in the plasma and it grows in volume, compressing and heating the adjacent fluid thereby providing thrust. Laser pulses may be applied repetitively. After each such thrust pulse, fresh air can be introduced next to the surface either laterally, or through a perforated surface. If air or some other gas or vapor is supplied, for example from a tank carried on board a vehicle, this invention may also be used to provide thrust in a vacuum environment. 8 figs.

Kare, J.T.

1990-01-01T23:59:59.000Z

374

GEOPHYSICAL RESEARCH LETTERS, VOL. ???, XXXX, DOI:10.1029/, Postseismic Deformation following the 1991 Racha, Georgia  

E-Print Network (OSTI)

the 1991 Racha, Georgia Earthquake J. Podgorski, E.H. Hearn,1 S. McClusky,2 R. Reilinger,2 T. Taymaz and O recorded in the Caucasus Mountains. Approxi- mately three months after this thrust-faulting earth- quake that the effective viscosity of the lower crust in the western Greater Caucasus region exceeds 1018 Pa s. 1

Hearn, Elizabeth H.

375

Nondestructive evaluation  

SciTech Connect

Research reported in the thrust area of nondestructive evaluation includes: advanced 3-D imaging technologies; new techniques in laser ultrasonic testing; infrared computed tomography for thermal NDE of materials, structures, sources, and processes; automated defect detection for large laser optics; multistatic micropower impulse radar imaging for nondestructive evaluation; and multi-modal NDE for AVLIS pod shielding components.

Martz, H.E.

1997-02-01T23:59:59.000Z

376

Renewable Energy Integration and the Impact of Carbon Regulation  

E-Print Network (OSTI)

Renewable Energy Integration and the Impact of Carbon Regulation on the Electric Grid Future Grid the Future Electric Energy System #12;Thrust Area 3 White Paper Renewable Energy Integration and the Impact. #12;ii Executive Summary The integration of renewable energy resources into the power grid is driven

377

High pressure heterogeneous catalysis in a low pressure UHV environment  

SciTech Connect

The major thrust of our research is to carry out for the first time a heterogeneous catalytic reaction that normally is observed only at high pressures (>1 atm) of reactant gas at low pressures (<10{sup {minus}4} Torr) in an ultrahigh vacuum environment. The reaction we have chosen is the steam reforming of methane on a Ni(111) crystal.

Ceyer, S.T.

1990-01-01T23:59:59.000Z

378

Program Announcement To DOE National Laboratories  

E-Print Network (OSTI)

funding in Fiscal Year 2013 should submit in response to this Program Announcement. NSTX is currently in Fiscal Year 2013. You are encouraged to transmit your proposal well before the deadline. PROPOSALS goal encompasses the research elements for the ST identified in Thrust 16 of the report Research Needs

Princeton Plasma Physics Laboratory

379

The Institute for Critical Technology and Applied Science at Virginia Tech supports and promotes cutting-edge research at the intersection of engineering, science, and medicine. Please visit www.ictas.vt.edu.  

E-Print Network (OSTI)

.ictas.vt.edu. Fuel Cell Research A Focus Area within the ICTAS Sustainable Energy Thrust Mission The mission cell technology to help meet society's energy needs. Technical Approach At its core, a fuel cell employees, students, or applicants for admission or employment on the basis of race, gender, disability, age

Beex, A. A. "Louis"

380

Measurement of Event Shapes in Proton-Antiproton Collisions at Center-of-Mass Energy 1.96 TeV  

Science Conference Proceedings (OSTI)

A study of event shape observables in proton-antiproton collisions at {radical}s = 1.96 TeV is presented. The data for this analysis were recorded by the CDF II detector at the Tevatron collider. The variables studied are the transverse thrust and thrust minor, both defined in the plane perpendicular to the beam direction. The observables are measured using energies from unclustered calorimeter cells. In addition to studies of the differential distributions, we present the dependence of event shape mean values on the leading jet transverse energy. Data are compared with pythia Tune A and to resummed parton level predictions that were matched to fixed order results at NLO accuracy (NLO+NLL). Predictions from pythia Tune A agree fairly well with the data. However, the underlying event contributes significantly to these observables, making it difficult to make direct comparisons to the NLO+NLL predictions, which do not account for the underlying event. To overcome this difficulty, we introduce a new observable, a weighted difference of the mean values of the thrust and thrust minor, which is less sensitive to the underlying event, allowing for a comparison with NLO+NLL. Both pythia Tune A and the NLO+NLL calculations agree well within the 20% theoretical uncertainty with the data for this observable, indicating that perturbative QCD successfully describes shapes of the hadronic final states.

Aaltonen, T.; Aaltonen, T.; /Helsinki Inst. of Phys.; Alvarez Gonzalez, B.; /Oviedo U. /Cantabria Inst. of Phys.; Amerio, S.; /INFN, Padua; Amidei, D.; /Michigan U.; Anastassov, A.; /Northwestern U.; Annovi, A.; /Frascati; Antos, J.; /Comenius U.; Apollinari, G.; /Fermilab; Appel, J.A.; /Fermilab; Apresyan, A.; /Purdue U. /Waseda U. /Dubna, JINR

2011-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Rotary pneumatic valve  

DOE Patents (OSTI)

A rotary pneumatic valve which is thrust balanced and the pneumatic pressure developed produces only radial loads on the valve cylinder producing negligible resistance and thus minimal torque on the bearings of the valve. The valve is multiplexed such that at least two complete switching cycles occur for each revolution of the cylinder spindle. 4 figs.

Hardee, H.C.

1989-08-02T23:59:59.000Z

382

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

383

Exceptional service in the national interest www.sandia.gov  

E-Print Network (OSTI)

Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE) and the International, Homeland & Nuclear Security Strategic Management Unit Revised July 2012 Jill Hruby is the Vice as the corporate strategic thrust on Nuclear Security (in all, about $274M in funding during FY10). The Nuclear

384

InSAR observations of aseismic slip associated with an earthquake swarm in the Columbia River flood basalts  

E-Print Network (OSTI)

's Hanford Site. Data from the seismic network along with interferometric synthetic aperture radar (In of the swarm. By modeling the InSAR deformation data we constructed a model that consists of a shallow thrust detected nearly 40 years ago in and around the Hanford Nuclear Site located in the eastern YFB [Pitt, 1971

385

Pollution in the home  

SciTech Connect

This paper dealt with two programs sponsored by the EPA. These programs were indoor air pollution research and radon research. The author discussed the major thrust of each program, the appropriations provided by congress, and the need to accelerate each programs' pace.

Dowd, R.M.

1987-06-01T23:59:59.000Z

386

Synthesis of Organosilicon Complexes from Rice Husk Derived ...  

Science Conference Proceedings (OSTI)

... were characterized by 1H, 13C, 29Si nuclear magnetic resonance and elemental analysis. ... iNEMI Environmental Thrust; History, Challenges, & Opportunities ... Re-Processing of Mining Waste: An Alternative Way to Secure Metal ... The Sustainable Inorganic Materials Management (SIM2) Consortium at KU Leuven.

387

PNNL-SA-45524 Interservice/Industry Training, Simulation, and Education Conference (I/ITSEC) 2005 Learning to Pull the Thread  

E-Print Network (OSTI)

PNNL-SA-45524 Interservice/Industry Training, Simulation, and Education Conference (I/ITSEC) 2005 the Pacific Northwest National Laboratory (PNNL) in 1992. Dr. Greitzer leads the Cognitive Informatics R&D thrust at PNNL and has managed a variety of R&D programs including advanced distributed learning

388

Nondestructive evaluations  

SciTech Connect

This report discusses Nondestructive Evaluation (NDE) thrust area which supports initiatives that advance inspection science and technology. The goal of the NDE thrust area is to provide cutting-edge technologies that have promise of inspection tools three to five years in the future. In selecting projects, the thrust area anticipates the needs of existing and future Lawrence Livermore National Laboratory (LLNL) programs. NDE provides materials characterization inspections, finished parts, and complex objects to find flaws and fabrication defects and to determine their physical and chemical characteristics. NDE also encompasses process monitoring and control sensors and the monitoring of in-service damage. For concurrent engineering, NDE becomes a frontline technology and strongly impacts issues of certification and of life prediction and extension. In FY-92, in addition to supporting LLNL programs and the activities of nuclear weapons contractors, NDE has initiated several projects with government agencies and private industries to study aging infrastructures and to advance manufacturing processes. Examples of these projects are (1) the Aging Airplanes Inspection Program for the Federal Aviation Administration, (2) Signal Processing of Acoustic Signatures of Heart Valves for Shiley, Inc.; and (3) Turbine Blade Inspection for the Air Force, jointly with Southwest Research Institute and Garrett. In FY-92, the primary contributions of the NDE thrust area, described in this report were in fieldable chemical sensor systems, computed tomography, and laser generation and detection of ultrasonic energy.

Kulkarni, S.

1993-03-01T23:59:59.000Z

389

Steady and Periodic Pressure Measurements on a Generic Helicopter Fuselage Model in the Presence of a Rotor  

Science Conference Proceedings (OSTI)

A wind tunnel test of a generic helicopter fuselage model with an independently mounted rotor has been conducted to obtain steady and periodic pressure data on the helicopter body. The model was tested at four advance ratios and three thrust coefficients. ...

Mineck Raymond E.; Gorton Susan Althoff

2000-06-01T23:59:59.000Z

390

Preliminary Structural Design Conceptualization for Composite Rotor for Verdant Power Water Current: Cooperative Research and Development Final Report, CRADA Number CRD-08-296  

DOE Green Energy (OSTI)

The primary thrust of the CRADA will be to develop a new rotor design that will allow higher current flows (>4m/s), greater swept area (6-11m), and in the process, will maximize performance and energy capture.

Hughes, S.

2011-02-01T23:59:59.000Z

391

The Advanced Superconducting Test Accelerator (ASTA) at Fermilab: A User-Driven Facility Dedicated to Accelerator Science \\& Technology  

E-Print Network (OSTI)

Fermilab is currently constructing a superconducting electron linac that will eventually serve as the backbone of a user-driven facility for accelerator science. This contribution describes the accelerator and summarizes the enabled research thrusts. A detailed description of the facility can be found at [\\url{http://apc.fnal.gov/programs2/ASTA_TEMP/index.shtml}].

Piot, P; Nagaitsev, S; Church, M; Garbincius, P; Henderson, S; Leibfritz, J

2013-01-01T23:59:59.000Z

392

The oil and gas potential of southern Bolivia: Contributions from a dual source rock system  

Science Conference Proceedings (OSTI)

The southern Sub-Andean and Chaco basins of Bolivia produce oil, gas and condensate from reservoirs ranging from Devonian to Tertiary in age. Geochemical evidence points to contributions from two Paleozoic source rocks: the Devonian Los Monos Formation and the Silurian Kirusillas Formation. Rock-Eval pyrolysis, biomarker data, microscopic kerogen analysis, and burial history modeling are used to assess the quality, distribution, and maturity of both source rock systems. The geochemical results are then integrated with the structural model for the area in order to determine the most likely pathways for migration of oil and gas in the thrust belt and its foreland. Geochemical analysis and modeling show that the primary source rock, shales of the Devonian Los Monos Formation, entered the oil window during the initial phase of thrusting in the sub-Andean belt. This provides ideal timing for oil accumulation in younger reservoirs of the thrust belt. The secondary source rock, although richer, consumed most of its oil generating capacity prior to the development of the thrust related structures. Depending on burial depth and location, however, the Silurian source still contributes gas, and some oil, to traps in the region.

Hartshorn, K.G. [Chevron Petroleum Company of Colombia, Santafe de Bogota (Colombia)

1996-08-01T23:59:59.000Z

393

INTEGR. COMP. BIOL., 42:10091017 (2002) Experimental Hydrodynamics and Evolution: Function of Median Fins in Ray-finned Fishes1  

E-Print Network (OSTI)

of relevant fluid dynamic parameters such as circulation and vorticity. In previous papers we have described and represent energy lost as a consequence of thrust generation (Carling et al., 1998). Such lateral forces may, shares several characteristics at odds with recent com- putational fluid dynamic analyses (e.g., Cheng

Drucker, Eliot G.

394

Friction and Galling Performance of NOREM 02 and NOREM 02A Alloys  

Science Conference Proceedings (OSTI)

To reduce plant radiation levels, EPRI has developed a series of iron-based hardfacing alloys known as NOREM. This report documents tests conducted to evaluate the friction and galling thresholds for NOREM 02 and 02A alloys to provide a basis for engineering evaluation of thrust requirements for gate valves in which these alloys are utilized.

1999-12-07T23:59:59.000Z

395

EPRI MOV Performance Prediction Program: Friction Separate Effects Test Report  

Science Conference Proceedings (OSTI)

The coefficient of sliding friction between the internal components of a gate valve is an important factor in determining the thrust required to operate the valve. An EPRI test program measured coefficients of friction between typical gate valve internal materials using specimens that duplicated the contact configurations occurring in valves.

1993-12-01T23:59:59.000Z

396

IOP PUBLISHING JOURNAL OF PHYSICS D: APPLIED PHYSICS J. Phys. D: Appl. Phys. 45 (2012) 012001 (5pp) doi:10.1088/0022-3727/45/1/012001  

E-Print Network (OSTI)

) doi:10.1088/0022-3727/45/1/012001 FAST TRACK COMMUNICATION Aerogel and ferroelectric dielectric permittivity as dielectric barrier discharge actuators. Specifically, the use of silica aerogels manifests itself primarily as heat generation with no measurable thrust. The silica aerogel, however, has

Roy, Subrata

397

Performance Characteristics of a Cluster of 5-kW Laboratory Hall Thrusters  

E-Print Network (OSTI)

[2]. If the tank pressure is too high, the background gas can artificially modify the exhaust plume thrust changes within 4% to 2%, significantly better than a simple random flux calculation that uses a variety of processes. For example, a large partial pressure of background gas molecules can affect ion

Walker, Mitchell

398

Preprint of the paper: "Stability analysis of BEM approximate solutions in grounding analysis"  

E-Print Network (OSTI)

the grounding grid its main element. In general, most of grounding grids of electrical substations consist thrusted ground rods in certain places of the substation site. The most important parametersPreprint of the paper: "Stability analysis of BEM approximate solutions in grounding analysis" J

Colominas, Ignasi

399

Convergence acceleration techniques in CAD systems for grounding analysis in layered soils  

E-Print Network (OSTI)

by ground rods vertically thrusted in certain places of the substation site. Thus, when a fault conditionConvergence acceleration techniques in CAD systems for grounding analysis in layered soils I a numerical formulation based on the Boundary Element Method for the analysis of grounding systems embedded

Colominas, Ignasi

400

Free trade and freer petchems drive Mexican restructuring  

Science Conference Proceedings (OSTI)

When Mexico first opened up its protected markets in 1987 by cutting import tariffs, it thrust the chemical industry into a phase of change. Now, with the advent of the North American Free Trade Agreement(NAFTA) and the liberalization of petrochemicals by state oil group Petroleos Mexicanos (Pemex), restructuring has moved up a gear.

Wood, A.

1992-11-25T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Curvature analysis applied to the Cantarell structure, southern Gulf of Mexico: implications for hydrocarbon exploration  

Science Conference Proceedings (OSTI)

The middle Miocene Cantarell structure is host to the largest hydrocarbon field in Mexico. It has been variously interpreted as a fold-and-thrust or a dextral transpressional structure and the hydrocarbons are generally located in fold culminations adjacent ... Keywords: Folds, Geological algorithm, Geological surfaces, Petroleum, Structural geology, Transpressional structure

J. J. Mandujano; R. V. Khachaturov; G. Tolson; J. Duncan Keppie

2005-06-01T23:59:59.000Z

402

National Aeronautics and Space Administration April 2012  

E-Print Network (OSTI)

titanium-H2 O Loop Heat Pipe system (interdependency with TA14), complete verification plan for 200k PPUCFM & XFER Adv Heat Rejection Beamed Energy Orbital (microsat) Beamed Energy Suborbital Fusion Thrust systems that op- erate through chemical reactions to heat and ex- pand a propellant (or use a fluid

403

National Aeronautics and Space Administration November 2010  

E-Print Network (OSTI)

titanium-H2 O Loop Heat Pipe system (interdependency with TA14), complete verification plan for 200k PPUCFM & XFER Adv Heat Rejection Beamed Energy Orbital (microsat) Beamed Energy Suborbital Fusion Thrust systems that op- erate through chemical reactions to heat and ex- pand a propellant (or use a fluid

404

Blogger, stick to your story: modeling topical noise in blogs with coherence measures  

Science Conference Proceedings (OSTI)

Topical noise in blogs arises when bloggers digress from the central topical thrust of their blogs. We introduce a method to explicitly incorporate a model of topical noise into a language modeling approach to the task of blog distillation. Topical noise ... Keywords: blog distillation, coherence measures, language models

Jiyin He; Wouter Weerkamp; Martha Larson; Maarten de Rijke

2008-07-01T23:59:59.000Z

405

Fusion devices  

SciTech Connect

Three types of thermonuclear fusion devices currently under development are reviewed for an electric utilities management audience. Overall design features of laser fusion, tokamak, and magnetic mirror type reactors are described and illustrated. Thrusts and trends in current research on these devices that promise to improve performance are briefly reviewed. Twenty photographs and drawings are included. (RME)

Fowler, T.K.

1977-10-11T23:59:59.000Z

406

Tectonophysics, 119 (1985) 67-88 Elsevier Science Publishers B.V.. Amsterdam -Printed in The Netherlands  

E-Print Network (OSTI)

-and-thrust belts. In: N.L. Carter and S. Uycda (Editors), Collision Tectonics: Deformation of Continental has been a subject of debate ever since the recognition of large-scale horizontal overthrusts (Rogers and Rogers, 1843; Heim, 1871). A commonly recognized dilemma in structural geology derives from the fact

Engelder, Terry

407

Unraveling the Timing of Fluid Migration and Trap Formation in the Brooks Range Foothills: A Key to Discovering Hydrocarbons  

SciTech Connect

Naturally occurring fractures can play a key role in the evolution and producibility of a hydrocarbon accumulation. Understanding the evolution of fractures in the Brooks Range/Colville basin system of northern Alaska is critical to developing a better working model of the hydrocarbon potential of the region. This study addressed this problem by collecting detailed and regional data on fracture distribution and character, structural geometry, temperature, the timing of deformation along the Brooks Range rangefront and adjacent parts of the Colville basin, and the in situ stress distribution within the Colville basin. This new and existing data then were used to develop a model of how fractures evolved in northern Alaska, both spatially and temporally. The results of the study indicate that fractures formed episodically throughout the evolution of northern Alaska, due to a variety of mechanisms. Four distinct fracture sets were observed. The earliest fractures formed in deep parts of the Colville basin and in the underlying Ellesmerian sequence rocks as these rocks experienced compression associated with the growing Brooks Range fold-and-thrust belt. The orientation of these deep basin fractures was controlled by the maximum in situ horizontal stress in the basin at the time of their formation, which was perpendicular to the active Brooks Range thrust front. This orientation stayed consistently NS-striking for most of the early history of the Brooks Range and Colville basin, but changed to NW-striking with the development of the northeastern Brooks Range during the early Tertiary. Subsequent incorporation of these rocks into the fold-and-thrust belt resulted in overprinting of these deep basin fractures by fractures caused by thrusting and related folding. The youngest fractures developed as rocks were uplifted and exposed. While this general order of fracturing remains consistent across the Brooks Range and adjacent Colville basin, the absolute age at any one location varies. Fracturing started in the southwest deep in the stratigraphic section during the Late Jurassic and Early Cretaceous, moving northeastward and upsection as the Colville basin filled from the west. Active fracturing is occurring today in the northeastern parts of the Colville basin, north of the northeastern Brooks thrust front. Across northern Alaska, the early deep basin fractures were probably synchronous with hydrocarbon generation. Initially, these early fractures would have been good migration pathways, but would have been destroyed where subsequently overridden by the advancing Brooks Range fold-and-thrust belt. However, at these locations younger fracture sets related to folding and thrusting could have enhanced reservoir permeability and/or served as vertical migration pathways to overlying structural traps.

Catherine L. Hanks

2008-12-31T23:59:59.000Z

408

THE INFLUENCE OF FOLD AND FRACTURE DEVELOPMENT ON RESERVOIR BEHAVIOR OF THE LISBURNE GROUP OF NORTHERN ALASKA  

Science Conference Proceedings (OSTI)

The Carboniferous Lisburne Group is a major carbonate reservoir unit in northern Alaska. The Lisburne is detachment folded where it is exposed throughout the northeastern Brooks Range, but is relatively undeformed in areas of current production in the subsurface of the North Slope. The objectives of this study are to develop a better understanding of four major aspects of the Lisburne: (1) The geometry and kinematics of detachment folds and their truncation by thrust faults. (2) The influence of folding on fracture patterns. (3) The influence of deformation on fluid flow. (4) Lithostratigraphy and its influence on folding, faulting, fracturing, and reservoir characteristics. The Lisburne in the main axis of the Brooks Range is characteristically deformed into imbricate thrust sheets with asymmetrical hanging wall anticlines and footwall synclines. In contrast, the Lisburne in the northeastern Brooks Range is characterized by symmetrical detachment folds. The focus of our 2000 field studies was at the boundary between these structural styles in the vicinity of Porcupine Lake, in the Arctic National Wildlife Refuge. The northern edge of thrust-truncated folds in Lisburne is marked by a local range front that likely represents an eastward continuation of the central Brooks Range front. This is bounded to the north by a gently dipping panel of Lisburne with local asymmetrical folds. The leading edge of the flat panel is thrust over Permian to Cretaceous rocks in a synclinal depression. These younger rocks overlie symmetrically detachment-folded Lisburne, as is extensively exposed to the north. Six partial sections were measured in the Lisburne of the flat panel and local range front. The Lisburne here is about 700 m thick and is interpreted to consist primarily of the Wachsmuth and Alapah Limestones, with only a thin veneer of Wahoo Limestone. The Wachsmuth (200 m) is gradational between the underlying Missippian Kayak Shale and the overlying Mississippian Alapah, and increases in resistance upward. The Alapah consists of a lower resistant member (100 m) of alternating limestone and chert, a middle recessive member (100 m), and an upper resistant member (260 m) that is similar to Wahoo in the northeastern Brooks Range. The Wahoo is recessive and is thin (30 m) due either to non-deposition or erosion beneath the sub-Permian unconformity. The Lisburne of the area records two major episodes of transgression and shallowing-upward on a carbonate ramp. Thicknesses and facies vary along depositional strike. Asymmetrical folds, mostly truncated by thrust faults, were studied in and south of the local range front. Fold geometry was documented by surveys of four thrust-truncated folds and two folds not visibly cut by thrusts. A portion of the local range front was mapped to document changes in fold geometry along strike in three dimensions. The folds typically display a long, non-folded gently to moderately dipping backlimbs and steep to overturned forelimbs, commonly including parasitic anticline-syncline pairs. Thrusts commonly cut through the anticlinal forelimb or the forward synclinal hinge. These folds probably originated as detachment folds based on their mechanical stratigraphy and the transition to detachment folds to the north. Their geometry indicates that they were asymmetrical prior to thrust truncation. This asymmetry may have favored accommodation of increasing shortening by thrust breakthrough rather than continued folding. Fracture patterns were documented in the gently dipping panel of Lisburne and the asymmetrical folds within it. Four sets of steeply dipping extension fractures were identified, with strikes to the (1) N, (2) E, (3) N to NW, and (4) NE. The relative timing of these fracture sets is complex and unclear. En echelon sets of fractures are common, and display normal or strike-slip sense. Mesoscopic and penetrative structures are locally well developed, and indicate bed-parallel shear within the flat panel and strain within folds. Three sets of normal faults are well developed in the area, and are unusual

Wesley K. Wallace; Catherine L. Hanks; Jerry Jensen; Michael T. Whalen

2002-01-01T23:59:59.000Z

409

Waters of Hot Springs National Park, Arkansas: their nature and origin  

DOE Green Energy (OSTI)

The 47 hot springs of Hot Springs National Park, Arkansas, issue from the plunging crestline of a large overturned anticline, along the southern margin of the Ouachita anticlinorium, in the Zigzag Mountains. The combined flow of the hot springs ranges from 750,000 to 950,000 gallons per day (3.29 x 10/sup -2/ to 4.16 x 10/sup -2/ cubic meters per second). The radioactivity and chemical composition of the hot-water springs are similar to that of the cold-water springs and wells in the area. The tritium and carbon-14 analyses of the water indicate that the water is a mixture of a very small amount of water less than 20 years old and a preponderance of water about 4400 years old. The presence of radium and radon in the hot-springs waters has been established by analyses. Mathematical models were employed to test various conceptual models of the hot-springs flow system. The geochemical data, flow measurements, and geologic structure of the region support the concept that virtually all the hot-springs water is of local, meteoric origin. Recharge to the hot-springs artesian-flow system is by infiltration of rainfall in the outcrop areas of the Bigfork Chert and the Arkansas Novaculite. The water moves slowly to depth where it is heated by contact with rocks of high temperature. Highly permeable zones, related to jointing or faulting, collect the heated water in the aquifer and provide avenues for the water to travel rapidly to the surface.

Bedinger, M.S.; Pearson, F.J. Jr.; Reed, J.E.; Sniegocki, R.T.; Stone, C.G.

1979-01-01T23:59:59.000Z

410

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

411

Permeability reduction by a xanthan/chromium(III) system in porous media  

SciTech Connect

This paper presents an experimental study on gelation of a xanthan/chromium(III) system in unconsolidated sandpacks at frontal velocities between 3 and 120 ft/D. High flow resistance developed at specific locations in the sandpacks in experiment conducted at velocities up to 35 ft/D; the locations correlated with velocity. No significant flow resistance developed in the sandpacks at frontal velocities of 83 and 118 ft/D. The effects of flow and shear rates and permeability on development of high flow resistance in the sandpacks are discussed. A conceptual model of the gelation process that incorporates filtration of gel aggregation is presented.

Hejri, S.; Jousset, F.; Green, D.W.; McCool, C.S.; Willhite, G.P. (Univ. of Kansas, Lawrence, KS (United States))

1993-11-01T23:59:59.000Z

412

EM Leads with Advanced Simulation Capability Technology | Department of  

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

with Advanced Simulation Capability Technology with Advanced Simulation Capability Technology EM Leads with Advanced Simulation Capability Technology April 4, 2013 - 12:00pm Addthis Figure 1: Advanced Simulation Capability for Environmental Management Thrust Areas. Figure 1: Advanced Simulation Capability for Environmental Management Thrust Areas. Figure 2: Spatial distribution of technetium-99 after the releases from the BC cribs using VisIt software on the Hanford Central Plateau. Figure 2: Spatial distribution of technetium-99 after the releases from the BC cribs using VisIt software on the Hanford Central Plateau. Figure 3: Conceptual model of uranium attenuation processes in the Savannah River F Area Seepage Basins plume, including adsorption/desorption (1); dissolution/precipitation (2); mixing/dilution (3); aqueous reactions (4); microbial interactions (5); and abiotic organic interactions (6).

413

The ENABLER---based on proven NERVA technology. [C; ZrC  

Science Conference Proceedings (OSTI)

The ENABLER reactor for use in a nuclear thermal propulsion engine uses the technology developed in the NERVA/Rover program, updated to incorporate advances in the technology. Using composite fuel, higher power densities per fuel element, improved radiation resistant control components and the advancements in use of carbon-carbon materials; the ENABLER can provide a specific impulse of 925 seconds, an engine thrust to weight (excluding reactor shield) approaching five, an improved initial Mass In Low Earth Orbit (IMLEO) and a consequent reduction in launch costs and logistics problems. This paper describes the 75,000 lbs thrust ENABLER design which is a low cost, low risk approach to meeting tomorrow's space propulsion needs.

Livingston, J.M.; Pierce, B.L. (Westinghouse Electric Corporation, Nuclear and Advanced Technology Division, Madison, Pennsylvania 15663-0158 (US))

1991-01-05T23:59:59.000Z

414

NERVA derivative reactors for thermal and electric propulsion  

Science Conference Proceedings (OSTI)

NERVA derivative reactors (NDRs) have significant flexibility for diverse space power applications that include direct thermal propulsion, steady state power for electric propulsion, and nuclear hybrid propulsion. For illustrations, three NDR designs were developed: one for a 50 kN thrust nuclear propulsion engine, a 6 MWe steady state electric power source, and a dual mode system that produces 50 kN of direct thrust plus 300 kWe of power for electric propulsion. The NDRs are based on demonstrated reactor technologies and state-of-the-art fuel and materials' technologies. The propulsion power systems can be designed for near-term applications (mid-1990 IOC). With additional developments in high temperature fuels, higher performance NDRs can be made available by the turn of the century. 11 refs.

Chi, J.W.H.; Holman, R.R.; Pierce, B.L.

1989-01-01T23:59:59.000Z

415

NERVA-derived rocket module for solar system exploration  

Science Conference Proceedings (OSTI)

A 50,000 pound thrust nuclear thermal rocket engine module concept based on Rover/NERVA technology is presented. Key engine features selected for reliability and safety have been integrated into this concept to provide 4.5 hours of full-thrust operation at a specific impulse of over 850 seconds. Those features include a single turbopump with an expander turbine, tank-head start in space, open-cycle decay heat removal with minimal loss of propellant, reactor cold end axial reflector, and tie tubes which are insulated end which are not used to provide turbine power. The tie tube configuration complements the open cycle decay heat removal concept. Retractable safety rods for water immersion subcriticality were considered and a design concept was developed. Other important safety issues were identified, and their method for accommodation in the design were considered for future implementation. 5 refs.

Zweig, H.R.; Cooper, M.H.

1993-06-01T23:59:59.000Z

416

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

Open Energy Info (EERE)

WTB-BOE.pdf WTB-BOE.pdf Jump to: navigation, search File File history File usage Wyoming 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: 15.02 MB, MIME type: application/pdf) Description Wyoming 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 Idaho, Utah, Wyoming File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment

417

A Gravitational Spreading Origin For The Socompa Debris Avalanche | Open  

Open Energy Info (EERE)

Gravitational Spreading Origin For The Socompa Debris Avalanche Gravitational Spreading Origin For The Socompa Debris Avalanche Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Gravitational Spreading Origin For The Socompa Debris Avalanche Details Activities (0) Areas (0) Regions (0) Abstract: Socompa Volcano arguably provides the world's best-exposed example of a sector collapse-derived debris avalanche deposit. New observations lead us to re-interpret the origin of the sector collapse. We show that it was triggered by failure of active thrust-anticlines in sediments and ignimbrites underlying the volcano. The thrust-anticlines were a result of gravitational spreading of substrata under the volcano load. About 80% of the resulting avalanche deposit is composed of substrata formerly residing under the volcano and in the anticlines. The collapse

418

Program to develop improved downhole drilling motors. Semi-annual report  

DOE Green Energy (OSTI)

Research progress is reported in two main sections: downhole drilling motor design and design of downhole motor seal, bearing, and test lubrication systems. Information on downhole drilling motor design is presented under the following subsection headings: Turbodrill development; positive displacement motor development; theory of Turbodrills; theory of positive displacement motors; basic motor components; forces on thrust bearings; thrust bearing design; radial bearing design; rotary seal design; sealed lubrication system; lubricants; and project status. The appendix contains information on high temperature lubricants. Information on the design of downhole motor seal, bearing, and test lubrication systems is presented under the following subsection headings: seal, bearing, and lubrication test design criteria; basic test conditions; independent and dependent variable parameters; alternative concepts for seal test apparatus; design of the seal test system; and bearing test system description. A schedule for remaining tasks is included. (JGB)

Maurer, W.C.

1976-11-01T23:59:59.000Z

419

DEVELOPMENT AND TESTING OF A PRE-PROTOTYPE MACH 2 RAMGEN ENGINE  

SciTech Connect

The research and development effort of a new kind of combustion engine is presented. The engine is designed to convert the thrust from ramjet modules into shaft torque, which in turn can be used for electrical power generation or mechanical drive applications. An aggressive test program was undertaken that included evaluation of the existing engine, as well as incorporation of novel improvements to the thrust modules and supporting systems. Fuel mixing studies with Vortex Generators and bluff body flame holders illuminated the importance of increasing the shear-layer area and spreading angle to augment flame volume. Evaluation of flame-holding configurations (with variable fuel injection methods) concluded that the heat release zone, and therefore combustion efficiency, could be manipulated by judicious selection of bluff body geometry, and is less influenced by fuel injection distribution. Air film cooling studies demonstrated that acceptable combustor life could be achieved with optimized air film distribution patterns and thermal barrier coatings.

Ramgen Power Systems

2001-09-01T23:59:59.000Z

420

The Environmental Management Core Laboratories - A Collaborative Effort to Enhance Cleanup  

SciTech Connect

Acknowledging that the magnitude and diversity of the critical issues facing the DOE-EM cannot be addressed by a single institution, the Laboratory Directors established the EM Core Laboratories. This collaborative network ensures that the best available resources are addressing environmental quality issues through the introduction of critical new science and technology. Based upon the Top-to-Bottom Review, the EM program is shifting the focus of its cleanup efforts to accelerate schedules to reduce cost and the most significant risks. To facilitate this acceleration, the Office of Science and Technology has restructured their research and development program towards two new thrusts. These thrusts, Closure Site Support and Alternative Development, are aimed at the high priority needs to support the re-baselined cleanup program. The EM Core Laboratories are well positioned to ensure the successful implementation of this new direction.

Birrer, S.A.; Frandsen, G.B.; Kearns, P.K.

2002-05-16T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

The Environmental Management Core Laboratories - A Collaborative Effort to Enhance Cleanup  

Science Conference Proceedings (OSTI)

Acknowledging that the magnitude and diversity of the critical issues facing the DOE-EM cannot be addressed by a single institution, the Laboratory Directors established the EM Core Laboratories. This collaborative network ensures that the best available resources are addressing environmental quality issues through the introduction of critical new science and technology. Based upon the Top-to-Bottom Review, the EM program is shifting the focus of its cleanup efforts to accelerate schedules to reduce cost and the most significant risks. To facilitate this acceleration, the Office of Science and Technology has restructured their research and development program towards two new thrusts. These thrusts, Closure Site Support and Alternative Development, are aimed at the high priority needs to support the re-baselined cleanup program. The EM Core Laboratories are well positioned to ensure the successful implementation of this new direction.

Birrer, Steve Allen; Griebenow, Bret Lee; Frandsen, Greg Bryan; Kearns, Paul Kenneth

2002-08-01T23:59:59.000Z

422

Investigating the Influence of the Added Mass Effect to Marine Hydrokinetic Horizontal-Axis Turbines Using a General Dynamic Wake Wind Turbine Code  

DOE Green Energy (OSTI)

This paper describes a recent study to investigate the applicability of a horizontal-axis wind turbine (HAWT) structural dynamics and unsteady aerodynamics analysis program (FAST and AeroDyn respectively) to modeling the forces on marine hydrokinetic (MHK) turbines. This paper summarizes the added mass model that has been added to AeroDyn. The added mass model only includes flow acceleration perpendicular to the rotor disc, and ignores added mass forces caused by blade deflection. A model of the National Renewable Energy Laboratory's (NREL) Unsteady Aerodynamics Experiment (UAE) Phase VI wind turbine was analyzed using FAST and AeroDyn with sea water conditions and the new added mass model. The results of this analysis exhibited a 3.6% change in thrust for a rapid pitch case and a slight change in amplitude and phase of thrust for a case with 30{sup o} of yaw.

Maniaci, D. C.; Li, Y.

2011-10-01T23:59:59.000Z

423

Investigating the Influence of the Added Mass Effect to Marine Hydrokinetic Horizontal-Axis Turbines Using a General Dynamic Wake Wind Turbine Code: Preprint  

DOE Green Energy (OSTI)

This paper describes a recent study to investigate the applicability of a horizontal-axis wind turbine (HAWT) structural dynamics and unsteady aerodynamics analysis program (FAST and AeroDyn respectively) to modeling the forces on marine hydrokinetic (MHK) turbines. It summarizes the added mass model that has been added to AeroDyn. The added mass model only includes flow acceleration perpendicular to the rotor disc, and ignores added mass forces caused by blade deflection. A model of the National Renewable Energy Laboratory's (NREL) Unsteady Aerodynamics Experiment (UAE) Phase VI wind turbine was analyzed using FAST and AeroDyn with sea water conditions and the new added mass model. The results of this analysis exhibited a 3.6% change in thrust for a rapid pitch case and a slight change in amplitude and phase of thrust for a case with 30 degrees of yaw.

Maniaci, D. C.; Li, Y.

2012-04-01T23:59:59.000Z

424

Small Fast Spectrum Reactor Designs Suitable for Direct Nuclear Thermal Propulsion  

SciTech Connect

Advancement of U.S. scientific, security, and economic interests through a robust space exploration program requires high performance propulsion systems to support a variety of robotic and crewed missions beyond low Earth orbit. Past studies, in particular those in support of both the Strategic Defense Initiative (SDI) and Space Exploration Initiative (SEI), have shown nuclear thermal propulsion systems provide superior performance for high mass high propulsive delta-V missions. The recent NASA Design Reference Architecture (DRA) 5.0 Study re-examined mission, payload, and transportation system requirements for a human Mars landing mission in the post-2030 timeframe. Nuclear thermal propulsion was again identified as the preferred in-space transportation system. A common nuclear thermal propulsion stage with three 25,000-lbf thrust engines was used for all primary mission maneuvers. Moderately lower thrust engines may also have important roles. In particular, lower thrust engine designs demonstrating the critical technologies that are directly extensible to other thrust levels are attractive from a ground testing perspective. An extensive nuclear thermal rocket technology development effort was conducted from 1955-1973 under the Rover/NERVA Program. Both graphite and refractory metal alloy fuel types were pursued. Reactors and engines employing graphite based fuels were designed, built and ground tested. A number of fast spectrum reactor and engine designs employing refractory metal alloy fuel types were proposed and designed, but none were built. The Small Nuclear Rocket Engine (SNRE) was the last engine design studied by the Los Alamos National Laboratory during the program. At the time, this engine was a state-of-the-art graphite based fuel design incorporating lessons learned from the very successful technology development program. The SNRE was a nominal 16,000-lbf thrust engine originally intended for unmanned applications with relatively short engine operations and the engine and stage design were constrained to fit within the payload volume of the then planned space shuttle. The SNRE core design utilized hexagonal fuel elements and hexagonal structural support elements. The total number of elements can be varied to achieve engine designs of higher or lower thrust levels. Some variation in the ratio of fuel elements to structural elements is also possible. Options for SNRE-based engine designs in the 25,000-lbf thrust range were described in a recent (2010) Joint Propulsion Conference paper. The reported designs met or exceeded the performance characteristics baselined in the DRA 5.0 Study. Lower thrust SNRE-based designs were also described in a recent (2011) Joint Propulsion Conference paper. Recent activities have included parallel evaluation and design efforts on fast spectrum engines employing refractory metal alloy fuels. These efforts include evaluation of both heritage designs from the Argonne National Laboratory (ANL) and General Electric Company GE-710 Programs as well as more recent designs. Results are presented for a number of not-yet optimized fast spectrum engine options.

Bruce G. Schnitzler; Stanley K. Borowski

2012-07-01T23:59:59.000Z

425

A Microwave Thruster for Spacecraft Propulsion  

DOE Green Energy (OSTI)

This presentation describes how a microwave thruster can be used for spacecraft propulsion. A microwave thruster is part of a larger class of electric propulsion devices that have higher specific impulse and lower thrust than conventional chemical rocket engines. Examples of electric propulsion devices are given in this presentation and it is shown how these devices have been used to accomplish two recent space missions. The microwave thruster is then described and it is explained how the thrust and specific impulse of the thruster can be measured. Calculations of the gas temperature and plasma properties in the microwave thruster are discussed. In addition a potential mission for the microwave thruster involving the orbit raising of a space station is explored.

Chiravalle, Vincent P [Los Alamos National Laboratory

2012-07-23T23:59:59.000Z

426

Beam Space Propulsion  

E-Print Network (OSTI)

Author offers a revolutionary method non-rocket transfer of energy and thrust into Space with distance of millions kilometers. The author has developed theory and made the computations. The method is more efficient than transmission of energy by high-frequency waves. The method may be used for space launch and for acceleration the spaceship and probes for very high speeds, up to relativistic speed by current technology. Research also contains prospective projects which illustrate the possibilities of the suggested method.

Alexander Bolonkin

2007-01-04T23:59:59.000Z

427

Pseudo 3-D simulator optimizes gravel-packed completions  

SciTech Connect

This paper discusses a three-dimensional computer simulation which allows the consistent use of a gravel pack in oil and gas well completions. The primary thrust of the paper is dealing with horizontal oil and gas wells in unconsolidated reservoir rock. The model's objective is to provide an overall computer-aided design and evaluation tool for circulation and squeeze gravel packing. It is based on equations representing conservation of mass, momentum, and energy.

Ali, S.A.; Sanclemente, L.W. (Chevron USA Production Co., New Orleans, LA (United States)); Tupper, M.A. (Dowell, New Orleans, LA (United States))

1994-03-01T23:59:59.000Z

428

Hanford technology integration: A success story  

SciTech Connect

This paper describes recent activities of the Richland Northwest Laboratory in the area of technology transfer. A major thrust within major DOE laboratories has been the implementation of technology transfer activities which transfer scientific knowledge, transfer technologies developed to deal with the production or conservation of energy, and transfer spinoff technologies into the private sector. Several activities which are in process or have been implemented are described in this paper.

Stenehjem, E.J.; Pond, D.J.; Widrig, J.E.; Deonigi, D.E.

1994-10-01T23:59:59.000Z

429

Evaluation of Advanced Wind Power Forecasting Models Results of the Anemos Project  

E-Print Network (OSTI)

capacity of 33.09 MW distributed on 49 Gamesa G47-660 wind turbines and one Lagerwey LW750 turbine. The RIX (digital terrain maps with elevation and roughness, wind farm layout, wind turbine power and thrust curves of the Baltic Sea. The wind farm consists of 2 Nordtank NTK500/41 turbines with a total rated capacity of 1.0 MW

Paris-Sud XI, Université de

430

Cognitive Foundations for Visual Analytics  

SciTech Connect

In this report, we provide an overview of scientific/technical literature on information visualization and VA. Topics discussed include an update and overview of the extensive literature search conducted for this study, the nature and purpose of the field, major research thrusts, and scientific foundations. We review methodologies for evaluating and measuring the impact of VA technologies as well as taxonomies that have been proposed for various purposes to support the VA community. A cognitive science perspective underlies each of these discussions.

Greitzer, Frank L.; Noonan, Christine F.; Franklin, Lyndsey

2011-02-25T23:59:59.000Z

431

The paragenesis of alteration associated with the P2 fault in the basement rocks of the Athabasca Basin E. E. Adlakha , K. Hattori , University of Ottawa: adla028@uottawa.ca, khattori@uOttawa.ca  

E-Print Network (OSTI)

, the world's largest high-grade uranium mine. The McArthur River deposit is classified as an unconformity expression of the P2 thrust fault proximal to i) economic grade uranium mineralization (McArthur River McArthur River Mine M C344 M C370 M C385 M C349 M C3620 500m N M C361 road Sampling MC-370 EOH 642

432

Alignment and operability analysis of a vertical sodium pump  

SciTech Connect

With the objective of identifying important alignment features of pumps such as FFTF, HALLAM, EBR II, PNC, PHENIX, and CRBR, alignment of the vertical sodium pump for the Clinch River Breeder Reactor Plant (CRBRP) is investigated. The CRBRP pump includes a flexibly coupled pump shaft and motor shaft, two oil-film tilting-pad hydrodynamic radial bearings in the motor plus a vertical thrust bearing, and two sodium hydrostatic bearings straddling the double-suction centrifugal impeller in the pump.

Gupta, V.K.; Fair, C.E.

1981-01-01T23:59:59.000Z

433

Hydromechanical drilling device  

DOE Patents (OSTI)

A hydromechanical drilling tool which combines a high pressure water jet drill with a conventional roller cone type of drilling bit. The high pressure jet serves as a tap drill for cutting a relatively small diameter hole in advance of the conventional bit. Auxiliary laterally projecting jets also serve to partially cut rock and to remove debris from in front of the bit teeth thereby reducing significantly the thrust loading for driving the bit.

Summers, David A. (Rolla, MO)

1978-01-01T23:59:59.000Z

434

Information engineering  

SciTech Connect

The Information Engineering thrust area develops information technology to support the programmatic needs of Lawrence Livermore National Laboratory`s Engineering Directorate. Progress in five programmatic areas are described in separate reports contained herein. These are entitled Three-dimensional Object Creation, Manipulation, and Transport, Zephyr:A Secure Internet-Based Process to Streamline Engineering Procurements, Subcarrier Multiplexing: Optical Network Demonstrations, Parallel Optical Interconnect Technology Demonstration, and Intelligent Automation Architecture.

Hunt, D.N.

1997-02-01T23:59:59.000Z

435

Status of Molten Carbonate Fuel Cell Technology  

Science Conference Proceedings (OSTI)

Fuel cell technology development and commercialization continues to be a major thrust in the alternative energy sector of distributed generation (DG). Second generation, molten carbonate fuel cell technology (MCFC) is now entering a critical commercialization phase. Given recent MCFC developments and advances in other distributed generation technologies, an assessment and update on the prospects for MCFC power systems is needed to guide future utility investments.

2003-01-22T23:59:59.000Z

436

Documentation and review of Eastern gas shales technology. Annual report, April 1, 1985-February 28, 1986  

Science Conference Proceedings (OSTI)

The report provides coverage on a project (1) to provide technology-transfer support for the Eastern Gas Shales Project Area, promoting the awareness and application of the program products through periodic publication of Eastern Devonian Gas Shales Technology Review and (2) to quantify impacts of technology improvements on shale gas cost-supply relationships, in order to aid in guiding the thrust of GRI's research program.

Skrinak, V.M.

1986-06-01T23:59:59.000Z

437

NERSC Strategic Implementation Plan 2002-2006  

SciTech Connect

This strategic proposal presents NERSC's vision for its activities and new directions over the next five years. NERSC's continuing commitment to providing high-end systems and comprehensive scientific support for its users will be enhanced, and these activities will be augmented by two new strategic thrusts: support for Scientific Challenge Teams and deployment of a Unified Science Environment. The proposal is in two volumes, the Strategic Plan and the Implementation Plan.

Kramer, William; Bethel, Wes; Craw, James; Draney, Brent; Fortney, William; Gorda, Brend; Harris, William; Meyer, Nancy; Ng, Esmond; Verdier, Francesca; Walter, Howard; Welcome, Tammy

2002-09-01T23:59:59.000Z

438

The Influence of Fold and Fracture Development on Reservoir Behavior of the Lisburne Group of Northern Alaska  

SciTech Connect

The objectives of this study were to develop a better understanding of four major aspects of the Lisburne: (1) The geometry and kinematics of detachment folds and their truncation by thrust faults, (2) The influence of folding and lithostratigraphy on fracture patterns, (3) Lithostratigraphy and its influence on folding, faulting, fracturing, and reservoir characteristics, and (4) The influence of lithostratigraphy and deformation on fluid flow.

Wallace, W.K.; Hanks, C.L.; Whalen, M.T.; Jensen, J.; Atkinson, P.K.; Brinton, J.S.

2001-01-09T23:59:59.000Z

439

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

440

Investigation of free-forced convection flows in cavity-type receivers. Final yearly report, 1979-1980  

DOE Green Energy (OSTI)

A summary is provided of the first of three years of experimental and theoretical research on free-forced convection flows in cavity-type solar receivers. New experimental and theoretical results are presented and discussed. The implication of these findings, with respect to the future thrust of the research program, is clarified as well as is possible at the present time. Following various related conclusions a summary and tentative schedule of work projected for year two of research are presented.

Humphrey, J.A.C.

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

Electric and Hybrid Vehicle Program, Site Operator Program. Quarterly progress report, October--December 1995 (first quarter of fiscal year 1996)  

DOE Green Energy (OSTI)

This is the Site Operator Program quarterly report for USDOE electric and hybrid vehicle research. Its mission now includes the three major activity categories of advancement of electric vehicle (EV) technologies, development of infrastructure elements needed to support significant EV use and increasing public awareness and acceptance of EVs. The 11 Site Operator Program participants, their geographic locations, and the principal thrusts of their efforts are identified. The EV inventories of the site operators totals about 250 vehicles. The individual fleets are summarized.

Francfort, J.E. [Lockheed Idaho Technologies Co., Idaho Falls, ID (United States); Bassett, R.R. [Sandia National Labs., Albuquerque, NM (United States); Briasco, S. [Los Angeles Dept. of Water and Power, CA (United States)] [and others

1996-03-01T23:59:59.000Z

442

Experimental Investigation of the Reflection Mode Micro Laser Propulsion under Highly Frequent and Multi Pulse Laser  

SciTech Connect

Micro laser propulsion used for some space tasks of micro-satellites are preferred to providing small thrust and high specific impulse while keeping power consumption low. Most previous work on micro laser propulsion are about transmission mode (T-mode) using a CW laser. In this article, a pulsed fiber laser is used to study the micro laser propulsion performance under reflection mode. Multi pulse (ranged from 100 to 2000) tests are conducted on a double base propellant with the vacuum less than 10 Pa. The laser frequency is 20 kHz and two kinds of instantaneous power density 4.77x10{sup 6} W/cm{sup 2} and 2.39x10{sup 7} W/cm{sup 2} are used. It is found that the momentum coupling coefficient C{sub m} and the mean thrust F increases with the increasing pulse numbers, which is different to the previous work. By adjusting the irradiation time T, it is easy to get a large mean thrust, up to mN. When the energy density is the same, C{sub m}, I{sub sp}, F and {eta} increase with the increasing power density. Also I{sub sp} and {eta} are very low, laser ablation is insufficiently under the current condition. 3D Morphology of the ablation hole is obtained by confocal microscope for the first time.

Zhang Xinghua; Cai Jian [Microelectronic Equipment Technology Department, Institute of Microelectronics of the Chinese Academy of Sciences, Beijing, 100029 (China); Li Long [Department of Modern Mechanics, University of Science and Technology of China, Hefei, 230027 (China)

2011-11-10T23:59:59.000Z

443

Electrostatic AB-Ramjet Space Propulsion  

E-Print Network (OSTI)

A new electrostatic ramjet space engine is proposed and analyzed. The upper atmosphere (85 -1000 km) is extremely dense in ions (millions per cubic cm). The interplanetary medium contains positive protons from the solar wind. A charged ball collects the ions (protons) from the surrounding area and a special electric engine accelerates the ions to achieve thrust or decelerates the ions to achieve drag. The thrust may have a magnitude of several Newtons. If the ions are decelerated, the engine produces a drag and generates electrical energy. The theory of the new engine is developed. It is shown that the proposed engine driven by a solar battery (or other energy source) can not only support satellites in their orbit for a very long time but can also work as a launcher of space apparatus. The latter capability includes launch to high orbit, to the Moon, to far space, or to the Earth atmosphere (as a return thruster for space apparatus or as a killer of space debris). The proposed ramjet is very useful in interplanetary trips to far planets because it can simultaneously produce thrust or drag and large electric energy using the solar wind. Two scenarios, launch into the upper Earth atmosphere and an interplanetary trip, are simulated and the results illustrate the excellent possibilities of the new concept.

Alexander Bolonkin

2007-01-08T23:59:59.000Z

444

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

Open Energy Info (EERE)

Montana Thrust Belt By 2001 Liquids Reserve Class Montana Thrust Belt By 2001 Liquids 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 Liquids 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 18:32, 20 December 2010 Thumbnail for version as of 18:32, 20 December 2010 5,100 × 6,600 (15.99 MB) MapBot (Talk | contribs) Automated bot upload

445

File:EIA-WTB-LIQ.pdf | Open Energy Information  

Open Energy Info (EERE)

Wyoming Thrust Belt By 2001 Liquids Reserve Class Wyoming Thrust Belt By 2001 Liquids Reserve Class Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(5,100 × 6,600 pixels, file size: 15.06 MB, MIME type: application/pdf) Description Wyoming Thrust Belt By 2001 Liquids 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 Idaho, Utah, Wyoming File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 20:36, 20 December 2010 Thumbnail for version as of 20:36, 20 December 2010 5,100 × 6,600 (15.06 MB) MapBot (Talk | contribs) Automated bot upload

446

Inverse Load Calculation of Wind Turbine Support Structures - A Numerical Verification Using the Comprehensive Simulation Code FAST: Preprint (Revised)  

DOE Green Energy (OSTI)

Physically measuring the dynamic responses of wind turbine support structures enables the calculation of the applied loads using an inverse procedure. In this process, inverse means deriving the inputs/forces from the outputs/responses. This paper presents results of a numerical verification of such an inverse load calculation. For this verification, the comprehensive simulation code FAST is used. FAST accounts for the coupled dynamics of wind inflow, aerodynamics, elasticity and turbine controls. Simulations are run using a 5-MW onshore wind turbine model with a tubular tower. Both the applied loads due to the instantaneous wind field and the resulting system responses are known from the simulations. Using the system responses as inputs to the inverse calculation, the applied loads are calculated, which in this case are the rotor thrust forces. These forces are compared to the rotor thrust forces known from the FAST simulations. The results of these comparisons are presented to assess the accuracy of the inverse calculation. To study the influences of turbine controls, load cases in normal operation between cut-in and rated wind speed, near rated wind speed and between rated and cut-out wind speed are chosen. The presented study shows that the inverse load calculation is capable of computing very good estimates of the rotor thrust. The accuracy of the inverse calculation does not depend on the control activity of the wind turbine.

Pahn, T.; Jonkman, J.; Rolges, R.; Robertson, A.

2012-11-01T23:59:59.000Z

447

Late miocene/pliocene origin of the inverted metamorphism of the Central Himalaya  

SciTech Connect

The spatial association of intracontinental thrusting and inverted metamorphism, recognized in the Himalaya more than a century ago, has inspired continuing efforts to identify their causal relationship. Perhaps the best known sequence of inverted metamorphism is that found immediately beneath the Himalayan Main Central Thrust (MCT), generally thought to have been active during the Early Miocene. It has been widely assumed that the pattern of inverted metamorphism also developed at that time. Using a new approach, in situ Th-Pb dating of monazite included in garnet, we have discovered that the peak metamorphic recrystallization recorded in the footwall of the MCT fault occurred at ca. 5 Ma. The apparent inverted metamorphism resulted from activation of a broad shear zone beneath the MCT zone which juxtaposed two right-way-up metamorphic sequences. Recognition of this remarkably youthful phase of metamorphism resolves outstanding problems in Himalayan tectonics, such as why the MCT (and not the more recently initiated thrusts) marks the break in slope of the present day mountain range, and transcends others, such as the need for exceptional conditions to explain Himalayan anatexis.

Harrison, T.M.; Ryerson, F.J.; LeFort, P.; Yin, A. Lovera, O.M.

1997-01-01T23:59:59.000Z

448

Oriented Event Shapes at N3LL + O(as^2)  

E-Print Network (OSTI)

We analyze oriented event-shapes in the context of Soft-Collinear Effective Theory (SCET) and in Fixed-Order perturbation theory. Oriented event-shapes are distributions of event-shape variables which are differential on the angle theta_T that the thrust axis forms with the electron-positron beam. We show that at any order in perturbation theory and for any event shape, only two angular structures can appear: F_0 = 3/8(1 + cos^2 theta_T) and F_1 = (1 - 3cos^2 theta_T). When integrating over theta_T to recover the more familiar event-shape distributions, only F_0 survives. The validity of our proof goes beyond perturbation theory, and hence only these two structures are present at the hadron level. The proof also carries over massive particles. Using SCET techniques we show that singular terms can only arise in the F_0 term. Since only the hard function is sensitive to the orientation of the thrust axis, this statement applies also for recoil-sensitive variables such as Jet Broadening. We carry out resummation at N3LL of singular terms for Thrust, Heavy-Jet Mass, the sum of the Hemisphere Masses and C-parameter. We also compute the Fixed-Order distributions for these event-shapes at O(as) analytically and at O(as^2) with the program Event2.

Vicent Mateu; German Rodrigo

2013-07-12T23:59:59.000Z

449

The Oquirrh basin revisited  

SciTech Connect

The upper Paleozoic succession in the Oquirrh basin in unusually thick, up to 9300 m, and consists mainly of a Pennsylvanian-middle Permian miogeocline of northwestern Utah. Previous workers have suggested a tectonic origin for the Oquirrh basin that is incompatible with the basin location in both time and space. There is no evidence for Pennsylvanian and Lower Permian tectonism in the middle of the miogeocline. Thermal evidence from the Mississippian Mission Canyon shale does no support the implied deep burial of the crustal sag models of basin formation. Stratigraphic and facies evidence indicates a growth fault origin for the basin. Regional isopach maps and facies maps are powerful tools in interpreting depositional environments and in reconstructing fold-and-thrust belts. However, the location of measured sections relative to the location of the growth fault basin. The Charleston-Nebo thrust may have essentially reversed the movement on a growth fault. Thick Oquirrh basin sedimentary rocks may not be required to balance structural sections across this thrust fault. A thin-skinned, extensional growth fault origin for the Oquirrh basin implies that the Cordilleran miogeocline did not participate in the Pennsylvanian north-vergent uplifts of the Ancestral Rocky Mountains.

Erskine, M.C.

1997-04-01T23:59:59.000Z

450

Large-Scale SST Variability in the Western North Atlantic Subtropical Convergence Zone during FASINEX. Part II: Upper Ocean Heat Balance and Frontogenesis  

Science Conference Proceedings (OSTI)

We analyzed the influence of wind-deriven horizontal heat advection on the large-scale [O(1000) km wavelength] variability of both the upper-ocean mixed-layer heat content and the subtropical frontal zone (SFZ) within an 11° by 10° domain in the ...

George R. Halliwell Jr.; Peter Cornillon

1990-02-01T23:59:59.000Z

451

The Upper-Ocean Response to Surface Heating  

Science Conference Proceedings (OSTI)

Moored observations of atmospheric variables and upper-ocean temperatures from the Long-Term Upper-Ocean Study (LOTUS) and the Frontal Air-Sea Interaction Experiment (FASINEX) are used to examine the upper-ocean response to surface heating. ...

Craig M. Lee; Daniel L. Rudnick

1996-04-01T23:59:59.000Z

452

Mesoscale Observations of a Prefrontal Squall Line  

Science Conference Proceedings (OSTI)

Phase I of the Cold Fronts Research Programme was carried out during November/December 1980 in south-eastern Australia. Data from a frontal event on 27 November are analyzed, with particular emphasis on a squall line that formed over the Southern ...

W. L. Physick; W. K. Downey; A. J. Troup; B. F. Ryan; P. J. Meighen

1985-11-01T23:59:59.000Z

453

Observations of Superinertial and Near-Inertial Wind-driven Flow  

Science Conference Proceedings (OSTI)

The superinertial and near-inertial wind-driven flow in the western North Atlantic is examined using data from two recent experiments. The Frontal Air–Sea Interaction Experiment (FASINEX) took place at 27°N, 70°W during 1986. The Long-Term Upper-...

Daniel L. Rudnick; Robert A. Weller

1993-11-01T23:59:59.000Z

454

Ethnicity classification based on a hierarchical fusion  

Science Conference Proceedings (OSTI)

In this paper, we propose a cascaded multimodal biometrics system involving a fusion of frontal face and lateral gait, for the specific problem of ethnicity classification. This system performs human ethnicity classification first from the cues of gait ... Keywords: ethnicity, face, fusion, gait

De Zhang; Yunhong Wang; Zhaoxiang Zhang

2012-12-01T23:59:59.000Z

455

Second Pan American Geosynthetics Conference & Exhibition GeoAmericas 2012  

E-Print Network (OSTI)

material properties, the load transfer mechanism at the interface, and the shape of the load-strain curve during pullout (Gupta, 2009). In general, these analytical models are used to predict the load profile from frontal linear variable differential transducer (LVDT) is the only displacement value used

Zornberg, Jorge G.

456

Storm-Generated Surface Waves and Sediment Resuspension in the East China and Yellow Seas  

Science Conference Proceedings (OSTI)

Surface winds derived from atmospheric pressure fields are used as input to a finite-depth wind-wave model to predict the sea state during a cold air frontal passage over the Yellow and East China Seas, which occurred 15–18 November 1983. The ...

Hans C. Graber; Robert C. Beardsley; William D. Grant

1989-08-01T23:59:59.000Z

457

Solar cells conversion efficiency maximisation based on sol-gel method and front surface texturisation  

Science Conference Proceedings (OSTI)

This paper presents experiments and evaluations on a new silicon solar cell structure obtained by texturisation of the front surface using silicon micromachining technologies. The textured surface of the solar cell is made in order to reduce frontal ... Keywords: light trapping, micromachining, silicon, sol-gel method, solar cells, texturisation

Lucian Milea; Orest Oltu; Claudius Teodorescu; Verona Muntean; Marius Stoian

2008-07-01T23:59:59.000Z

458

OPTIMIZATION OF HYBRID GEOTHERMAL HEAT PUMP SYSTEMS Scott Hackel, Graduate Research Assistant; Gregory Nellis, Professor; Sanford Klein,  

E-Print Network (OSTI)

users. Refer to the ASOS Quick Reference Handbook published by the National Weather Service=a wind shift occurred at 1715Z as a result of a frontal passage. TOWER OR SURFACE VISIBILITY: Tower visibility is coded as TWR_VIS_ vvvv and is the visibility reported by tower personnel. For example, TWR VIS

Wisconsin at Madison, University of

459

An Objective Climatology of Carolina Coastal Fronts  

E-Print Network (OSTI)

This study describes a simple objective method to identify cases of coastal frontogenesis offshore of the Carolinas and to characterize the sensible weather associated with frontal passage at measurement sites near the coast. The identification method, based on surface hourly data from offshore and adjacent land stations, was applied to an 11-yr dataset (1984–94). A total of 379 coastal fronts was found, 70 of which eventually made landfall along the North Carolina coast; 112 that remained offshore, and 197 were termed diurnal since they remained offshore but disappeared during daylight hours. Results show that most coastal and offshore sites experience a wind shift of about 40°–70 ° and a warming of about 2°–3°C during the hour of frontal passage. Exceptions include sites near colder waters where the rates are markedly reduced and frontal passage is often less discernible. Excluding diurnal fronts, just over half the cases were associated with cold-air damming (CAD) during the cold season of 16 October–15 April. Most of these winter cases linked with CAD were onshore fronts. During the warm season, most fronts were diurnal, but the association with CAD was still significant. To explore the synoptic-scale environment, composite maps for the cold season were generated for all three frontal subtypes from NCEP–NCAR reanalysis data. Results show a strong surface anticyclone

K. Wyat Appel; Allen J. Riordan; Timothy A. Holley

2004-01-01T23:59:59.000Z

460

Observations of Elevated Convection Initiation Leading to a Surface-Based Squall Line during 13 June IHOP_2002  

Science Conference Proceedings (OSTI)

The evolution of a mesoscale convective system (MCS) observed during the International H2O Project that took place on the Great Plains of the United States is described. The MCS formed at night in a frontal zone, with four initiation episodes ...

John H. Marsham; Stanley B. Trier; Tammy M. Weckwerth; James W. Wilson

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frontal ouachita thrust" 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

66 M A X P L A N C K F O R S C H U N G 4 / 2 0 0 4 Entwicklung  

E-Print Network (OSTI)

-764, hrsg. von M. S. Gazzaniga. MIT Press. Cambridge 1995 3 Bergmann, R.: Relativsatz. Geburtstag, 51-66, hrsg. von E. Koller, H. Moser. Institut für Germanistik. Innsbruck 1985 4 Birbaumer, N., T of the Frontal Lobe. Raven, New York 1989 17 Geschwind, N., A. M. Galaburda (1984, Hrsg.). Cerebral Domi- nance

462

Some Two-Layer Models of the Shelf-Slope Front: Geostrophic Adjustment and its Maintenance  

Science Conference Proceedings (OSTI)

Two conceptual models of a two-layered frontal system are presented to study the wintertime shelf-slope front. The first model examines the geostrophic adjustment over a step topography after the fall overturning and applies only over short time ...

Hsien Wang Ou

1983-10-01T23:59:59.000Z

463

Designing Against Head Injury While Considering Neck Injury  

Science Conference Proceedings (OSTI)

Without a doubt, the major concern of vehicle design is safety ¨C increasing the survival chance of driver and passenger during a crash and decreasing the risk of injury. Safety features, such as seat belt, seat cushion with crash tubing, or frontal ... Keywords: HIC, head injury criterion, neck injury, whiplash

Simon M. Hsiang; Stephen Ekwaro-Osire; Taek Hyun Jang

2007-01-01T23:59:59.000Z

464

Numerical Analysis of the Influence of Jets, Fronts, and Mountains on Alpine Lee Cyclogenesis  

Science Conference Proceedings (OSTI)

Recent diagnostic and numerical studies have been shown that cyclogensis events in the lee of the Alps occur when: 1) an upper-level trough is upstream: 2) a low-level frontal system impinges on the Alps and, 3) an upper-level streak on the west ...

M. Zupanski; J. McGinley

1989-01-01T23:59:59.000Z

465

A Squall Line in Southern Germany: Kinematics and Precipitation Formation as Deduced by Advanced Polarimetric and Doppler Radar Measurements  

Science Conference Proceedings (OSTI)

A multiscale analysis of a squall line system is reported in this paper. It is shown that the squall line was initiated as part of a synoptic-scale frontal zone. The main emphasis then is on the polarimetric and Doppler radar measurements which ...

P. F. Meischner; V. N. Bringi; D. Heimann; H. Höller

1991-03-01T23:59:59.000Z

466

Transcranial magnetic stimulation and functional mri reveal cortical and subcortical interactions during stop-signal response inhibition  

Science Conference Proceedings (OSTI)

Stopping an action requires suppression of the primary motor cortex M1. Inhibitory control over M1 relies on a network including the right inferior frontal cortex rIFC and the supplementary motor complex SMC, but how these regions interact to exert inhibitory ...

Bram B. Zandbelt; Mirjam Bloemendaal; Janna Marie Hoogendam; René S. Kahn; Matthijs Vink

2013-02-01T23:59:59.000Z

467

An Instability of Mature Cold Fronts  

Science Conference Proceedings (OSTI)

An instability of a cold front possessing a low-level warm-band precursor is examined within an f-plane, quasi- and semigeostrophic framework. The basic frontal state is taken to be two-dimensional and of uniform potential vorticity. Theoretical ...

Christoph Schär; Huw C. Davies

1990-04-01T23:59:59.000Z

468

Ocean Radar Backscatter Relationship with Near-Surface Winds: A Case Study during FASINEX  

Science Conference Proceedings (OSTI)

A case study of ocean radar backscatter dependence on near-surface wind and wind stress is presented using the data obtained on 18 February 1986 during the Frontal Air-Sea Interaction Experiment. Our interest in this case stems from the ...

F. Li; W. Large; W. Shaw; K. Davidson; E. J. Walsh

1989-03-01T23:59:59.000Z

469

Orographic Effects and Evaporative Cooling along a Subtropical Cold Front: The Case of the Spectacular Saharan Dust Outbreak of March 2004  

Science Conference Proceedings (OSTI)

On 2 March 2004 a marked upper-level trough and an associated surface cold front penetrated into the Sahara. High winds along and behind this frontal system led to an extraordinary, large-scale, and long-lived dust outbreak, accompanied by ...

Gregor Gläser; Peter Knippertz; Bernd Heinold

2012-08-01T23:59:59.000Z

470

A Case Study of Heavy Snowfall in Oklahoma  

Science Conference Proceedings (OSTI)

Heavy snowfall occurred in central Oklahoma on 14 December 1997. The snowfall continued throughout the following day, with over 30 cm of snow falling from Oklahoma to Michigan. The snow in Oklahoma fell from a warm-frontal snowband that was ...

John D. Marwitz; Jim Toth

1993-03-01T23:59:59.000Z

471

Computation of geostrophic streamfunction, its derivatives, and error estimates from an array of CPIES in Drake Passage  

Science Conference Proceedings (OSTI)

Current and Pressure-recording Inverted Echo Sounders (CPIES) were deployed in an eddy-resolving local dynamics array (LDA) in the eddy-rich Polar Frontal Zone (PFZ) in Drake Passage as part of the cDrake experiment. Methods are described for ...

Y. L. Firing; T. K. Chereskin; D. R. Watts; K. L. Tracey; C. Provost

472

Postfrontal Boundary-Layer Modification over the Western Gulf of Mexico during GUFMEX  

Science Conference Proceedings (OSTI)

Cold-frontal passages over the Gulf of Mexico in late winter or early spring are frequently followed by return-flow episodes in which modified polar air and warm, moist tropical air move toward the Gulf coast. While both advection and airmass ...

William T. Thompson; Stephen D. Burk

1993-09-01T23:59:59.000Z

473

Volume 1of 3 Removal Action Options Analysis  

E-Print Network (OSTI)

water that contains complex frontal features and upwelling/downwelling cells. The zonal temperature, sea many questions remain regarding the paleoceanographic and paleoclimatic history of this remote region and contains complex fronts and upwelling/downwelling cells. In the South Atlantic, the ACC has a strongly

474

Spontaneous Shocks  

Science Conference Proceedings (OSTI)

Midocean fronts have by now been well documented in the World Ocean. In view of this, a general circulation theory that admits interior fronts is considered in this paper and a new class of frontal solutions is discussed. The present solutions ...

William K. Dewar

1992-05-01T23:59:59.000Z

475

Materials at LANL  

Science Conference Proceedings (OSTI)

Exploring the physics, chemistry, and metallurgy of materials has been a primary focus of Los Alamos National Laboratory since its inception. In the early 1940s, very little was known or understood about plutonium, uranium, or their alloys. In addition, several new ionic, polymeric, and energetic materials with unique properties were needed in the development of nuclear weapons. As the Laboratory has evolved, and as missions in threat reduction, defense, energy, and meeting other emerging national challenges have been added, the role of materials science has expanded with the need for continued improvement in our understanding of the structure and properties of materials and in our ability to synthesize and process materials with unique characteristics. Materials science and engineering continues to be central to this Laboratory's success, and the materials capability truly spans the entire laboratory - touching upon numerous divisions and directorates and estimated to include >1/3 of the lab's technical staff. In 2006, Los Alamos and LANS LLC began to redefine our future, building upon the laboratory's established strengths and promoted by strongly interdependent science, technology and engineering capabilities. Eight Grand Challenges for Science were set forth as a technical framework for bridging across capabilities. Two of these grand challenges, Fundamental Understanding of Materials and Superconductivity and Actinide Science. were clearly materials-centric and were led out of our organizations. The complexity of these scientific thrusts was fleshed out through workshops involving cross-disciplinary teams. These teams refined the grand challenge concepts into actionable descriptions to be used as guidance for decisions like our LDRD strategic investment strategies and as the organizing basis for our external review process. In 2008, the Laboratory published 'Building the Future of Los Alamos. The Premier National Security Science Laboratory,' LA-UR-08-1541. This document introduced three strategic thrusts that crosscut the Grand Challenges and define future laboratory directions and facilities: (1) Information Science and Technology enabl ing integrative and predictive science; (2) Experimental science focused on materials for the future; and (3) Fundamental forensic science for nuclear, biological, and chemical threats. The next step for the Materials Capability was to develop a strategic plan for the second thrust, Materials for the Future. within the context of a capabilities-based Laboratory. This work has involved extending our 2006-2007 Grand Challenge workshops, integrating materials fundamental challenges into the MaRIE definition, and capitalizing on the emerging materials-centric national security missions. Strategic planning workshops with broad leadership and staff participation continued to hone our scientific directions and reinforce our strength through interdependence. By the Fall of 2008, these workshops promoted our primary strength as the delivery of Predictive Performance in applications where Extreme Environments dominate and where the discovery of Emergent Phenomena is a critical. These planning efforts were put into action through the development of our FY10 LDRD Strategic Investment Plan where the Materials Category was defined to incorporate three central thrusts: Prediction and Control of Performance, Extreme Environments and Emergent Phenomena. As with all strategic planning, much of the benefit is in the dialogue and cross-fertilization of ideas that occurs during the process. By winter of 2008/09, there was much agreement on the evolving focus for the Materials Strategy, but there was some lingering doubt over Prediction and Control of Performance as one of the three central thrusts, because it overarches all we do and is, truly, the end goal for materials science and engineering. Therefore, we elevated this thrust within the overarching vision/mission and introduce the concept of Defects and Interfaces as a central thrust that had previously been implied but not clearly articulated.

Taylor, Antoinette J [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

476

Materials at LANL  

SciTech Connect

Exploring the physics, chemistry, and metallurgy of materials has been a primary focus of Los Alamos National Laboratory since its inception. In the early 1940s, very little was known or understood about plutonium, uranium, or their alloys. In addition, several new ionic, polymeric, and energetic materials with unique properties were needed in the development of nuclear weapons. As the Laboratory has evolved, and as missions in threat reduction, defense, energy, and meeting other emerging national challenges have been added, the role of materials science has expanded with the need for continued improvement in our understanding of the structure and properties of materials and in our ability to synthesize and process materials with unique characteristics. Materials science and engineering continues to be central to this Laboratory's success, and the materials capability truly spans the entire laboratory - touching upon numerous divisions and directorates and estimated to include >1/3 of the lab's technical staff. In 2006, Los Alamos and LANS LLC began to redefine our future, building upon the laboratory's established strengths and promoted by strongly interdependent science, technology and engineering capabilities. Eight Grand Challenges for Science were set forth as a technical framework for bridging across capabilities. Two of these grand challenges, Fundamental Understanding of Materials and Superconductivity and Actinide Science. were clearly materials-centric and were led out of our organizations. The complexity of these scientific thrusts was fleshed out through workshops involving cross-disciplinary teams. These teams refined the grand challenge concepts into actionable descriptions to be used as guidance for decisions like our LDRD strategic investment strategies and as the organizing basis for our external review process. In 2008, the Laboratory published 'Building the Future of Los Alamos. The Premier National Security Science Laboratory,' LA-UR-08-1541. This document introduced three strategic thrusts that crosscut the Grand Challenges and define future laboratory directions and facilities: (1) Information Science and Technology enabl ing integrative and predictive science; (2) Experimental science focused on materials for the future; and (3) Fundamental forensic science for nuclear, biological, and chemical threats. The next step for the Materials Capability was to develop a strategic plan for the second thrust, Materials for the Future. within the context of a capabilities-based Laboratory. This work has involved extending our 2006-2007 Grand Challenge workshops, integrating materials fundamental challenges into the MaRIE definition, and capitalizing on the emerging materials-centric national security missions. Strategic planning workshops with broad leadership and staff participation continued to hone our scientific directions and reinforce our strength through interdependence. By the Fall of 2008, these workshops promoted our primary strength as the delivery of Predictive Performance in applications where Extreme Environments dominate and where the discovery of Emergent Phenomena is a critical. These planning efforts were put into action through the development of our FY10 LDRD Strategic Investment Plan where the Materials Category was defined to incorporate three central thrusts: Prediction and Control of Performance, Extreme Environments and Emergent Phenomena. As with all strategic planning, much of the benefit is in the dialogue and cross-fertilization of ideas that occurs during the process. By winter of 2008/09, there was much agreement on the evolving focus for the Materials Strategy, but there was some lingering doubt over Prediction and Control of Performance as one of the three central thrusts, because it overarches all we do and is, truly, the end goal for materials science and engineering. Therefore, we elevated this thrust within the overarching vision/mission and introduce the concept of Defects and Interfaces as a central thrust that had previously been implied but not clearly articulated.

Taylor, Antoinette J [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

477

Research Needs for Magnetic Fusion Energy Sciences. Report of the Research Needs Workshop (ReNeW) Bethesda, Maryland, June 8-12, 2009  

SciTech Connect

Nuclear fusion - the process that powers the sun - offers an environmentally benign, intrinsically safe energy source with an abundant supply of low-cost fuel. It is the focus of an international research program, including the ITE R fusion collaboration, which involves seven parties representing half the world's population. The realization of fusion power would change the economics and ecology of energy production as profoundly as petroleum exploitation did two centuries ago. The 21st century finds fusion research in a transformed landscape. The worldwide fusion community broadly agrees that the science has advanced to the point where an aggressive action plan, aimed at the remaining barriers to practical fusion energy, is warranted. At the same time, and largely because of its scientific advance, the program faces new challenges; above all it is challenged to demonstrate the timeliness of its promised benefits. In response to this changed landscape, the Office of Fusion Energy Sciences (OFES ) in the US Department of Energy commissioned a number of community-based studies of the key scientific and technical foci of magnetic fusion research. The Research Needs Workshop (ReNeW) for Magnetic Fusion Energy Sciences is a capstone to these studies. In the context of magnetic fusion energy, ReNeW surveyed the issues identified in previous studies, and used them as a starting point to define and characterize the research activities that the advance of fusion as a practical energy source will require. Thus, ReNeW's task was to identify (1) the scientific and technological research frontiers of the fusion program, and, especially, (2) a set of activities that will most effectively advance those frontiers. (Note that ReNeW was not charged with developing a strategic plan or timeline for the implementation of fusion power.) This Report presents a portfolio of research activities for US research in magnetic fusion for the next two decades. It is intended to provide a strategic framework for realizing practical fusion energy. The portfolio is the product of ten months of fusion-community study and discussion, culminating in a Workshop held in Bethesda, Maryland, from June 8 to June 12, 2009. The Workshop involved some 200 scientists from Universities, National Laboratories and private industry, including several scientists from outside the US. Largely following the Basic Research Needs model established by the Office of Basic Energy Sciences (BES ), the Report presents a collection of discrete research activities, here called 'thrusts.' Each thrust is based on an explicitly identified question, or coherent set of questions, on the frontier of fusion science. It presents a strategy to find the needed answers, combining the necessary intellectual and hardware tools, experimental facilities, and computational resources into an integrated, focused program. The thrusts should be viewed as building blocks for a fusion program plan whose overall structure will be developed by OFES , using whatever additional community input it requests. Part I of the Report reviews the issues identified in previous fusion-community studies, which systematically identified the key research issues and described them in considerable detail. It then considers in some detail the scientific and technical means that can be used to address these is sues. It ends by showing how these various research requirements are organized into a set of eighteen thrusts. Part II presents a detailed and self-contained discussion of each thrust, including the goals, required facilities and tools for each. This Executive Summary focuses on a survey of the ReNeW thrusts. The following brief review of fusion science is intended to provide context for that survey. A more detailed discussion of fusion science can be found in an Appendix to this Summary, entitled 'A Fusion Primer.'

None

2009-06-08T23:59:59.000Z

478

Research Needs for Magnetic Fusion Energy Sciences. Report of the Research Needs Workshop (ReNeW) Bethesda, Maryland, June 8-12, 2009  

SciTech Connect

Nuclear fusion - the process that powers the sun - offers an environmentally benign, intrinsically safe energy source with an abundant supply of low-cost fuel. It is the focus of an international research program, including the ITE R fusion collaboration, which involves seven parties representing half the world's population. The realization of fusion power would change the economics and ecology of energy production as profoundly as petroleum exploitation did two centuries ago. The 21st century finds fusion research in a transformed landscape. The worldwide fusion community broadly agrees that the science has advanced to the point where an aggressive action plan, aimed at the remaining barriers to practical fusion energy, is warranted. At the same time, and largely because of its scientific advance, the program faces new challenges; above all it is challenged to demonstrate the timeliness of its promised benefits. In response to this changed landscape, the Office of Fusion Energy Sciences (OFES ) in the US Department of Energy commissioned a number of community-based studies of the key scientific and technical foci of magnetic fusion research. The Research Needs Workshop (ReNeW) for Magnetic Fusion Energy Sciences is a capstone to these studies. In the context of magnetic fusion energy, ReNeW surveyed the issues identified in previous studies, and used them as a starting point to define and characterize the research activities that the advance of fusion as a practical energy source will require. Thus, ReNeW's task was to identify (1) the scientific and technological research frontiers of the fusion program, and, especially, (2) a set of activities that will most effectively advance those frontiers. (Note that ReNeW was not charged with developing a strategic plan or timeline for the implementation of fusion power.) This Report presents a portfolio of research activities for US research in magnetic fusion for the next two decades. It is intended to provide a strategic framework for realizing practical fusion energy. The portfolio is the product of ten months of fusion-community study and discussion, culminating in a Workshop held in Bethesda, Maryland, from June 8 to June 12, 2009. The Workshop involved some 200 scientists from Universities, National Laboratories and private industry, including several scientists from outside the US. Largely following the Basic Research Needs model established by the Office of Basic Energy Sciences (BES ), the Report presents a collection of discrete research activities, here called 'thrusts.' Each thrust is based on an explicitly identified question, or coherent set of questions, on the frontier of fusion science. It presents a strategy to find the needed answers, combining the necessary intellectual and hardware tools, experimental facilities, and computational resources into an integrated, focused program. The thrusts should be viewed as building blocks for a fusion program plan whose overall structure will be developed by OFES , using whatever additional community input it requests. Part I of the Report reviews the issues identified in previous fusion-community studies, which systematically identified the key research issues and described them in considerable detail. It then considers in some detail the scientific and technical means that can be used to address these is sues. It ends by showing how these various research requirements are organized into a set of eighteen thrusts. Part II presents a detailed and self-contained discussion of each thrust, including the goals, required facilities and tools for each. This Executive Summary focuses on a survey of the ReNeW thrusts. The following brief review of fusion science is intended to provide context for that survey. A more detailed discussion of fusion science can be found in an Appendix to this Summary, entitled 'A Fusion Primer.'

2009-06-08T23:59:59.000Z

479

ARM - Publications: Science Team Meeting Documents  

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

Towards Parameterization of Frontal Mesoscale Circulations and Cloudiness Towards Parameterization of Frontal Mesoscale Circulations and Cloudiness in GCMs Based on ARM Observations Norris, J.R.(a), Weaver, C.P.(b), Gordon, N.D.(c), and Klein, S.A.(d), Scripps Institution of Oceanography (a), Rutgers University (b), Scripps Institution of Oceanography (c), GFDL/NOAA (d) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting Cloudiness associated with extratropical cyclones is currently poorly represented in GCMs due to incorrect and insufficient representation of subgrid-scale processes. Since this can lead to erroneous cloud-climate feedbacks it is necessary to develop an understanding of the relationship between mesoscale cloud variability and large-scale synoptic forcing that will result in improved parameterization. Observations from the ARM

480

EEG analyses with SOBI.  

SciTech Connect

The motivating vision behind Sandia's MENTOR/PAL LDRD project has been that of systems which use real-time psychophysiological data to support and enhance human performance, both individually and of groups. Relevant and significant psychophysiological data being a necessary prerequisite to such systems, this LDRD has focused on identifying and refining such signals. The project has focused in particular on EEG (electroencephalogram) data as a promising candidate signal because it (potentially) provides a broad window on brain activity with relatively low cost and logistical constraints. We report here on two analyses performed on EEG data collected in this project using the SOBI (Second Order Blind Identification) algorithm to identify two independent sources of brain activity: one in the frontal lobe and one in the occipital. The first study looks at directional influences between the two components, while the second study looks at inferring gender based upon the frontal component.

Glickman, Matthew R.; Tang, Akaysha (University of New Mexico, Albuquerque, NM)

2009-02-01T23:59:59.000Z

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481

Overview of the VISTA Spacecraft Concept Powered by Inertial Confinement Fusion  

DOE Green Energy (OSTI)

VISTA was conceived through a detailed systems analysis as a viable, realistic, and defensible spacecraft concept based on advanced ICF technology but existing or near-term technology for other systems. It is a conical self-contained single-stage piloted spacecraft in which a magnetic thrust chamber directs the plasma emissions from inertial confinement fusion (ICF) targets into a rearward exhaust. VISTA's propulsion system is therefore unique because it is based on (1) a rather mature technology (ICF), which is known to work with sufficient driver input; (2) direct heating of all expellant by the fusion process, thus providing high mass flow rates without significant degradation of jet efficiency; and (3) a magnetic thrust chamber, which avoids the plasma thermalization and resultant degradation of specific impulse that are unavoidable with the use of mechanical thrust chambers. VISTA therefore has inherently high power/mass ratios and high specific impulses. With advanced ICF technology, ultra-fast roundtrips (RTs) to objects within the solar system are possible (e.g., {ge}145 days RT to Mars, {ge}7 years RT to Pluto). Such short-duration missions are imperative to minimize the human physiological deteriorations arising from zero gravity and the cosmic-radiation. In addition, VISTA offers on-board artificial gravity and propellant-based shielding from cosmic rays, thus reducing the physiological deteriorations to insignificant levels. In this paper, we give an overview of the various vehicle systems for this concept, estimate the general missions performance capabilities for interplanetary missions, and describe in detail the performance for the baseline mission of a piloted roundtrip to Mars with a 100-ton payload. Items requiring further research include a reduction of the wet mass from its baseline value of 6,000 metric tons, and the development of fast ignition or its equivalent to provide target gains in excess of several hundred. With target gains well above several hundred, there is no other known technology that can compete with VISTA's performance.

Orth, C D

2000-11-21T23:59:59.000Z

482

Fabrication Technology  

SciTech Connect

The mission of the Fabrication Technology thrust area is to have an adequate base of manufacturing technology, not necessarily resident at Lawrence Livermore National Laboratory (LLNL), to conduct the future business of LLNL. The specific goals continue to be to (1) develop an understanding of fundamental fabrication processes; (2) construct general purpose process models that will have wide applicability; (3) document findings and models in journals; (4) transfer technology to LLNL programs, industry, and colleagues; and (5) develop continuing relationships with the industrial and academic communities to advance the collective understanding of fabrication processes. The strategy to ensure success is changing. For technologies in which they are expert and which will continue to be of future importance to LLNL, they can often attract outside resources both to maintain their expertise by applying it to a specific problem and to help fund further development. A popular vehicle to fund such work is the Cooperative Research and Development Agreement with industry. For technologies needing development because of their future critical importance and in which they are not expert, they use internal funding sources. These latter are the topics of the thrust area. Three FY-92 funded projects are discussed in this section. Each project clearly moves the Fabrication Technology thrust area towards the goals outlined above. They have also continued their membership in the North Carolina State University Precision Engineering Center, a multidisciplinary research and graduate program established to provide the new technologies needed by high-technology institutions in the US. As members, they have access to and use of the results of their research projects, many of which parallel the precision engineering efforts at LLNL.

Blaedel, K.L.

1993-03-01T23:59:59.000Z

483

Ocean tide energy converter having improved efficiency  

Science Conference Proceedings (OSTI)

A tide motor useful for converting periodic rising and falling water levels to useful work such as electric power generation includes a primary piston having a large enclosed chamber that can selectively be filled with air for generation of upward thrust when submerged in rising tidal water or filled with water for generating downward gravitational thrust when the piston is suspended in air above a dropping tidal water level. Cyclic filling and emptying of the chamber is programmed to coordinate piston positions and water level positions, and the piston can be locked in either up or down position to achieve maximum flotation and gravitational thrust forces. An auxiliary tidal piston that can be locked in a down position has an upper water chamber provided with flood valves and an air filled, sealed flotation chamber below. The auxiliary piston is located near the primary piston, and is designed to have positive buoyancy when its respective chambers are filled with water and air. The lower area of the water chamber of the auxiliary piston is connected to the lower area of the primary piston chamber by a valve conduit so the primary piston chamber can be filled with water at its high position while it is locked up by releasing the auxiliary piston to float upwardly with its water chamber filled, and placing the primary and auxiliary piston chambers in communication with each other so water flows from the latter into the former until the primary piston chamber is filled with water before it begins its downward stroke after the water level has dropped below it. After the primary piston has completed its downward stroke, its interior chamber is drained and sealed in preparation for its next upward stroke on the next rising tide, and the water chamber of the auxiliary piston is refilled in preparation for the next cycle of operation.

Rainey, D.E.

1980-01-29T23:59:59.000Z

484

The effect of fractures, faults, and sheared shale zones on the hydrology of Bear Creek Burial Grounds A-South, Oak Ridge, Tennessee  

E-Print Network (OSTI)

Previous hydrologic models of flow in Bear Creek Valley have presented lateral flow as occurring through the Nolichucky Shale in parallel to strike fractures within thin carbonate beds; the effects of faults were not considered. This study presents a ground water flow model that incorporates lateral flow through parallel-to-strike fractures and thrust faults, and perpendicular-to-strike cross valley strike-slip faults. These latter cross-valley structures cause flow to be diverted to other strikeparallel zones of enhanced permeability towards the south side of the valley. Using core, geophysical and hydrologic data from five boreholes in the Bear Creek Burial Grounds three types of potential fluid-flow conduits were identified: fractures, faults, and shale shear zones. Open fractures decrease in abundance with depth and tend to occur most frequently in oolitic limestone beds relative to other carbonate lithologies. Fractures below 1 00 ft BGS in the Nolichucky Shale and below 250 ft in the Maynardville Limestone do not appear to be caused by dissolution; instead, they appear to be the result of a change in the local stress field due to erosion effects. Faults, both cross-valley and thrust faults, and sheared shale zones are interpreted to disrupt the lateral continuity of the bedding and increase the rock-mass permeability of the Nolichucky Shale, permitting ground water to flow these structural zones. This study provided opportunity to interpret DNAPL migration patterns from Burial Ground A-South. DNAPL migration parallel to the valley's axis is affected by parallel-to-strike fractures and thrust faults, and its lateral migration perpendicular to strike is influenced by cross valley strike-slip faults and decreasing collect at depth because of decreasing fracture occurrence and reduced permeability and then migrate laterally along the cross valley strike-slip faults until it encounters and enters a zone of higher permeability parallel to strike.

Hollon, Dwight Mitchell

1997-01-01T23:59:59.000Z

485

HMNewsFall08  

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

Hydrate Production through Hydrate Production through CO 2 -CH 4 Exchange ........................ 1 Effects of Reservoir Heterogeneity on Productivity ................................ 5 Accretionary Margin Frontal Ridge Slope Failures and Cold Seep Biogeochemistry ............................. 9 Paleo Hydrates Role in Deepwater Biogenic Gas Reservoirs...............13 Application of Rhizon Samplers to Obtain High-Resolution Pore Fluid Records ...........................................16 Workshop Summary ....................18 Announcements .......................19 * Nine New Research Projects * Call for Papers * AAPG/SEPM Call for Abstracts * Hydrate R&D Program Review

486

Fronto-parietal cortex in sequential behaviour  

E-Print Network (OSTI)

et al., 2011). In an interesting study Desmurget et al. (2009) stimulated inferior parietal regions in tumour patients undergoing surgery. They found that in the context of motor action, this elicited a feeling of intention for action... ), anterior insula extending into frontal operculum (AI/FO), supplementary motor area/anterior cingulate (SMA/ACC) and intraparietal sulcus 17 (IPS). A number of other studies investigating as disparate forms or control as would manifest in visual...

Farooqui, Ausaf Ahmed

2012-10-09T23:59:59.000Z

487

Face recognition based on 3D ridge images obtained from range data  

Science Conference Proceedings (OSTI)

In this paper, we present an approach for 3D face recognition from frontal range data based on the ridge lines on the surface of the face. We use the principal curvature, k"m"a"x, to represent the face image as a 3D binary image called ridge image. The ... Keywords: 3D face recognition, Gaussian curvature, Hausdorff distance, Iterative closest points, Range image, Ridge image

Mohammad H. Mahoor; Mohamed Abdel-Mottaleb

2009-03-01T23:59:59.000Z

488

Sandia National Labs: Physical, Chemical and Nano Sciences Center (PCNSC)  

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

Home Home About Us Departments News Partnering Research J. Charles Barbour J. Charles Barbour Director Beverly Eppinga Beverly A. Eppinga Sr. Mgt. Asst. DOI Research Briefs CINT Physical, Chemical, and Nano Sciences Center The Physical, Chemical, and Nano Sciences Center supports Sandia's mission by providing new scientific knowledge.We have two key activities: Support the National Nuclear Security Administration's (NNSA) mission with our unique expertise in science-based solutions Perform long-term research, particularly in the physical, chemical, and nano sciences that will enable future microsystems We focus on five technical thrusts: Science-Based Solutions for NNSA Mission Needs Collective Hierarchical Systems Compound Semiconductor Science and Technology Nanosciences

489

LANL | Earth and Environmental Sciences Division (EES)  

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

EES Capabilities EES Capabilities To connect to an expanded list of key capabilities and the people at Los Alamos National Laboratory who have experience in those areas, use our Capabilities Search feature. search Click on the links below to explore our major capabilities and their research applications. Each capabilities page is cross-linked to relevant thrust development activities within EES Division. Computational Geoscience Earth Surface & Subsurface Characterization Los Alamos Seismic Network (LASN) Atmosphere, Environment & Ecosystems Imaging & Analysis of Earth & Atmosphere Signatures Energy, Earth & Environmental Systems Analysis Waste Characterization & Management Medical Ultrasound Imaging Carbon Sequestration Time Reversal More on Partnering in Technology at Los Alamos National Laboratory

490

Vegetable oils: liquid coolants for solar heating and cooling applications  

DOE Green Energy (OSTI)

It has been proposed that vegetable oils, renewable byproducts of agriculture processes, be investigated for possible use as liquid coolants. The major thrust of the project was to investigate several thermophysical properties of the four vegetable oils selected. Vapor pressures, specific heat, viscosity, density, and thermal conductivity were determined over a range of temperatures for corn, soybean, peanut, and cottonseed oil. ASTM standard methods were used for these determinations. In addition, chemical analyses were performed on samples of each oil. The samples were collected before and after each experiment so that any changes in composition could be noted. The tests included iodine number, fatty acid, and moisture content determination. (MHR)

Ingley, H A

1980-02-01T23:59:59.000Z

491

ION ROCKET ENGINE  

DOE Patents (OSTI)

A thrust generating engine utilizing cesium vapor as the propellant fuel is designed. The cesium is vaporized by heat and is passed through a heated porous tungsten electrode whereby each cesium atom is fonized. Upon emergfng from the tungsten electrode, the ions are accelerated rearwardly from the rocket through an electric field between the tungsten electrode and an adjacent accelerating electrode grid structure. To avoid creating a large negative charge on the space craft as a result of the expulsion of the positive ions, a source of electrons is disposed adjacent the ion stream to neutralize the cesium atoms following acceleration thereof. (AEC)

Ehlers, K.W.; Voelker, F. III

1961-12-19T23:59:59.000Z

492

A Pulsed Laser-Electromagnetic Hybrid Accelerator For Space Propulsion Application  

SciTech Connect

A fundamental study of a newly developed rectangular pulsed laser-electromagnetic hybrid thruster was conducted, in which laser-ablation plasma was induced through laser beam irradiation onto a solid target and accelerated by electrical means instead of direct acceleration only by using a laser beam. The performance of the thruster was evaluated by measuring the mass per shot and impulse bit. As results, significantly high specific impulse ranging from 5,000 approx6,000 sec were obtained at energies of 0.1 and 8.6 J, respectively. In addition, the typical thrust efficiency varied from 17% to 19% depending on the charge energy.

Shinohara, Tadaki; Horisawa, Hideyuki [Department of Aeronautics and Astronautics, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292 Japan (Japan); Baba, Msahumi; Tei, Kazuyoku [Department of Physics, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292 (Japan)

2010-05-06T23:59:59.000Z

493

Energy Technology Transfer for Industry Through the Texas Energy Extension Service  

E-Print Network (OSTI)

The Texas Energy Extension Service (EES) is one of ten Department of Energy funded pilot programs designed to test methods for assisting small energy users to reduce energy costs. A major thrust of EES in Texas is directed toward providing assistance to Texas manufacturers. This takes the form of responding to requests for technical information and conducting plant visits to energy intensive small manufacturers. An evaluation of program effectiveness and assessment of participants' needs has recently been conducted. The evaluation/needs assessment suggests that specific conservation information when delivered by credible organizations is acted upon and leads to reductions in energy costs.

Riter, S.

1979-01-01T23:59:59.000Z

494

High-Pressure Thermodynamic Properties of f-electron Metals, Transition Metal Oxides, and Half-Metallic Magnets  

SciTech Connect

This project involves research into the thermodynamic properties of f-electron metals, transition metal oxides, and half-metallic magnets at high pressure. These materials are ones in which the changing importance of electron-electron interactions as the distance between atoms is varied can tune the system through phase transitions from localized to delocalized electrons, from screened to unscreened magnetic moments, and from normal metal to one in which only a single spin specie can conduct. Three main thrusts are being pursued: (1) Mott transitions in transition metal oxides, (2) magnetism in half-metallic compounds, and (3) large volume-collapse transitions in f-band metals.

Scalettar, Richard T.; Pickett, Warren E.

2004-07-01T23:59:59.000Z

495

High-Pressure Thermodynamic Properties of f-electron Metals, Transition Metal Oxides, and Half-Metallic Magnets  

SciTech Connect

This project involves research into the thermodynamic properties of f-electron metals, transition metal oxides, and half-metallic magnets at high pressure. These materials are ones in which the changing importance of electron-electron interactions as the distance between atoms is varied can tune the system through phase transitions from localized to delocalized electrons, from screened to unscreened magnetic moments, and from normal metal to one in which only a single spin specie can conduct. Three main thrusts are being pursued: (i) Mott transitions in transition metal oxides, (ii) magnetism in half-metallic compounds, and (iii) large volume-collapse transitions in f-band metals.

Richard T. Scalettar; Warren E. Pickett

2005-08-02T23:59:59.000Z

496

Redox Reactions of Metalloporphyrins and their Role in Catalyzed Reduction of Carbon Dioxide  

Science Conference Proceedings (OSTI)

Pulse radiolysis and laser photolysis are used to study redox processes of metalloporphyrins and related complexes in order to evaluate these light absorbing molecules as sensitizers and intermediates in solar energy conversion schemes. The main thrust of the current studies is to investigate the role of reduced metalloporphyrins as intermediates in the catalyzed reduction of carbon dioxide. Studies involve cobalt and iron porphyrins, phthalocyanines, corroles, and corrins as homogeneous catalysts for reduction of carbon dioxide in solution. The main aim is to understand the mechanisms of these photochemical schemes in order to facilitate their potential utilization.

Neta, P.

2002-09-01T23:59:59.000Z

497

Materials Science and Technology Division - Physical Sciences Directorate -  

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

Connect with PJG Connect with PJG For the Public Awards & Honors R&D100 Awards R&D100 Award Posters For Researchers Profiles For Industry Research Thrust Areas Advanced Alloys Advanced Steels Amorphous Bulk Metallic Glasses Nano Crystalline Composites Ni-Based Alloys Ti Alloys Advanced Processing Additive Manufacturing Electronic Packaging Gelcasting Infrared/Photonic Processing Laser Interference Patterning Magnetic Field Processing Powder Metallurgy Pulse Thermal-Processing (PTP) Ceramics Ceramics Conventional Metals Processing Casting Extrusion Forging Lightweight Metals Aluminum Magnesium Titanium Modeling Materials Behavior Under Severe Environments Microstructure Modeling During Phase Transformations Process Modeling and Simulation: Energy Transport Sensors and Data Acquisition Techniques

498

Theoretical Condensed Matter Physics | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Theoretical Condensed Matter Physics Theoretical Condensed Matter Physics Materials Sciences and Engineering (MSE) Division MSE Home About Research Areas Energy Frontier Research Centers (EFRCs) DOE Energy Innovation Hubs BES Funding Opportunities The Computational Materials and Chemical Sciences Network (CMCSN) Theoretical Condensed Matter Physics Scientific Highlights Reports and Activities Principal Investigators' Meetings BES Home Research Areas Theoretical Condensed Matter Physics Print Text Size: A A A RSS Feeds FeedbackShare Page This research area supports theoretical condensed matter physics with emphasis on the theory, modeling, and simulation of electronic correlations. A major thrust is nanoscale science, where links between the electronic, optical, mechanical, and magnetic properties of nanostructures

499

APS 7-BM Beamline: Techniques  

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

Motivation Motivation The major thrust of the 7-BM beamline is the application of synchrotron radiation tools to examine complex fluid flowfields. Two major techniques are applied: radiography and x-ray fluorescence spectroscopy. While optical techniques are often ideally suited to the study of fluid flowfields, there are certain flowfields for which optical diagnostics have significant challenges. These include: Multiphase flows: Visible light interacts strongly with phase boundaries. This leads to strong refraction, scattering, and attenuation of light. These effects hinder quantitative measurements of dense multiphase flowfields. Opaque media. Flows with strong refractive effects. Luminous flames: The strong light emission from sooting flames can hinder certain optical diagnostics.

500

ALCATOR C-MOD FY03-FY04 WORK PROPOSAL  

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

(Draft) (Draft) ALCATOR C-MOD FY03-FY04 WORK PROPOSAL March 2002 Submitted to: Office of Fusion Energy Sciences Office of Energy Research U.S. Department of Energy Germantown, MD 20874 Plasma Science and Fusion Center Massachusetts Institute of Technology Cambridge, MA 02139 ALCATOR C-MOD FY03-04 WORK PROPOSAL Table of Contents 1. Introduction.......................................................................................... 1 2. Alcator C-Mod Research Areas ............................................................11 2.1 Advanced Tokamak Thrust ............................................................11 2.2 Burning Plasma Experiment Support..............................................25 2.3 Transport